Consulta: year:"2017"
Registros recuperados: 9.468
Máximo de registros impressos: 2500
Data/hora: 31/10/2024 22:02:43

AGRICULTURA DE PRECISÃO: UM ALERTA À IMPRECISÃO – ESTUDO DE CASO NA CAFEICULTURA
Provedor de dados: 196
Autores: Almeida, Leandro da Silva; Guimarães, Ednaldo Carvalho.
O objetivo deste trabalho foi avaliar a discrepância existente entre mapas gerados a partir da utilização da configuração padrão fornecidos por softwares de agricultura de precisão (default) comparando com os mapas nos quais se realiza criteriosamente os procedimentos necessários para o ajuste dos mapas. Para estudo foi utilizado o programa Gamma Design Software (GS+®) versão 7.0. O experimento foi conduzido em propriedade cafeeira que possui 65 ha de cafeeiro arábica (Coffea arabica L.), cultivado em um Latossolo Vermelho Distrófico (LVd), localizada no município de Araguari-MG. Foi utilizada uma malha não sistemática de um ponto para cada hectare. Os dados a principio foram submetidos, a análise fatorial exploratória, gerando três fatores. Os fatores...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1469

DESEMPENHO PRODUTIVO E QUALIDADE DE CULTIVARES DE RÚCULA EM SISTEMA SEMI-HIDROPÔNICO
Provedor de dados: 196
Autores: Jardina, Lucimara Lima; Cordeiro, Carlos Alberto Martins; Silva, Marcelo Cléon de Castro; Sanches, Alex Guimarães; Araújo Júnior, Pedro Vitorino de.
O sistema semi-hidropônico é uma alternativa para a produção de hortaliças; combina substrato inerte e solução nutritiva, requer menor quantidade de água e funciona por nível, não há uso de energia elétrica. Nesse contexto, objetivou-se avaliar o desempenho produtivo e a qualidade de cultivares de rúcula em sistema semi-hidropônico. A pesquisa foi desenvolvida em hidroponia comercial localizada no município de Altamira-PA, no período de dezembro de 2014 a fevereiro de 2015. As cultivares avaliadas foram: Apreciatta, Cultivada, Donatella, Gigante e Rococó. Aos 28 dias após o transplante foram avaliados a altura das plantas, número de folhas, massa fresca das raízes e produtividade; a qualidade foi determinada mediante análises de pH, sólidos solúveis totais...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1399

ALTERNATIVES FOR SPRING FORAGE EMPTINESS IN PAMPA, BRAZIL
Provedor de dados: 196
Autores: Malaguez, Edgard Gonçalves; Dinarte, Gabriella Valduga; Tadielo, Leonardo Ereno; Dos Santos, Nathaly Lopes Toledo; Castagnara, Deise Dalazen.
The spring forage emptiness is an obstacle to the development of Brazilian livestock, including in the Bioma Pampa region. Feed strategies for this period contributed to the development of livestock and to the conservation of the biome. The objective of this work was to know the nutritional potential of forages during spring forage for use as strategies in the forage planning. The experiment had a completely randomized design, with ten forages and four replicates. The chemical composition, in vitro dry matter digestibility (IVDMD) and the total digestible nutrient content (NTD) of elephant grass, brachiaria cultivars Convert and Marandu, Tifton 68; diploid and tetraploid ryegrass; red, white and arrowleaf clover; and bird’s-foot trefoil. The grasses had a...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1590

FENOLOGIA DE QUALEA PARVIFLORA MART. (VOCHYSIACEAE) EM UM REMANESCENTE DE CERRADO SENSU STRICTO
Provedor de dados: 196
Autores: Ferreira, Kleyton Rezende; Fina, Bruna Gardenal; Rêgo, Norton Hayd; da Rui, Ricardo Fernando; Kusano, Daniel Makoto.
O objetivo desse estudo foi avaliar as fenofases vegetativas (queda de folhas e brotamento) e reprodutivas (floração e frutificação) de dezoito indivíduos de Q. parviflora localizados em uma área de cerrado sensu stricto na fazenda da Universidade Estadual de Mato Grosso do Sul, no município de Aquidauana, MS. As observações foram realizadas quinzenalmente, no período de agosto de 2010 a julho de 2012. Para o cálculo das porcentagens de cada fenofase seguimos a metodologia proposta por Fournier (1974). Utilizamos a correlação de Spearman (P&amp;lt;0,05) para verificar relação entre variáveis climáticas e as fenofases da espécie. A população mostrou elevada sincronia dentro de cada fenofase e apresentou um padrão fenológico sazonal. O brotamento teve...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1534

EMBALAGEM E TRATAMENTO HIDROTÉRMICO NA MANUTENÇÃO DA QUALIDADE PÓS-COLHEITA DE JAMBU
Provedor de dados: 196
Autores: Oliveira, Olganeth Moreira de; Menezes, Keren Railka Paiva; Santos, Guilherme Celestino de Souza; Sanches, Alex Guimarães; Cordeiro, Carlos Alberto Martins.
O jambu também conhecido como agrião bravo e jambu pequeno é uma hortaliça folhosa que apresenta elevada perecibilidade após a colheita, observada pela rápida deterioração e intensa perda de água. Desta forma, o presente trabalho tem por objetivo avaliar a conservação pós-colheita do jambu pelo uso do hidroresfriamento e do acondicionamento em diferentes embalagens. O experimento foi conduzido em um delineamento experimental inteiramente casualizado em arranjo fatorial 5x5, sendo cinco tratamentos e cinco tempos de armazenamento com quatro repetições. A unidade experimental foi formada por amostras de 50 g. Houve efeito significativo ao nível de 1% e 5% pelo teste F para todas as variáveis avaliadas tanto na interação entre os fatores dias de armazenamento...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1611

COINOCULAÇÃO DE Bradyrhizobium japonicum e Azospirillum brasilense EM SEMENTES DE AMENDOIM DE DIFERENTES TAMANHOS
Provedor de dados: 196
Autores: Silva, Elijanara Raissa da; Salles, Josiane Souza; Zuffo, Alan Mario; Steiner, Fábio.
O tamanho da semente é um importante indicador físico da qualidade fisiológica das sementes, pois pode afetar a taxa de germinação e o crescimento inicial das plântulas. Neste contexto, o presente estudo teve como objetivo avaliar os efeitos do tamanho das sementes e da inoculação de Bradyrhizobium japonicum e Azospirillum brasilense de forma isolada ou combinada na emergência das plântulas, nodulação das raízes e no crescimento inicial das plantas de amendoim (Arachis hypogaea L., cv. IAC Tatu ST). As plantas foram cultivadas em vasos plásticos de 8,0 L preenchidos com um solo arenoso do Cerrado e mantidas sob condições de casa-de-vegetação. O delineamento experimental utilizado foi o de blocos ao acaso em esquema fatorial 3 × 4 com quatro repetições. Os...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2192

HIDRATAÇÃO CONTROLADA DE SEMENTES DE SOJA: POTENCIAL FISIOLÓGICO E EMERGÊNCIA EM SOLO COM RHIZOCTONIA SOLANI
Provedor de dados: 196
Autores: Costa, Denis Santiago da; Rocha, Cartiane Rubishirley de Macedo; Yagushi, Juliana Tieme; Menten, José Otávio Machado; Cruz, Ananias Alves.
A hidratação controlada é uma técnica que favorece a germinação rápida e uniforme diminuindo o tempo de contato entre fungos responsáveis pelo tombamento de plântulas e os tecidos suscetíveis. Assim, objetivou-se avaliar diferentes métodos de hidratação controlada de sementes de soja, seus efeitos sobre o potencial fisiológico das sementes e sobre emergência em solo infestado por Rhizoctonia solani. Três lotes de sementes de soja do cultivar BRS 232 foram avaliados e classificados quanto à germinação e ao vigor e, em seguida, submetidas à procedimentos de hidratação controlada (controle, entre papéis com água destilada, entre papéis com água destilada com PEG 6000 e por imersão direta em solução aquosa de PEG 6000). A eficiência dos tratamentos foi...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1363

DESEMPENHO AGRONÔMICO DE HÍBRIDOS DE MILHO EM TRÊS ÉPOCAS DE SEMEADURA NO CERRADO GOIANO
Provedor de dados: 196
Autores: Buso, Wilian Henrique Diniz; Silva, Luciana Borges e; Silva, Sandra Máscimo da Costa e; Leão Junior, Laidson Alves.
Avaliou-se o desempenho agronômico de híbridos de milho em três épocas de semeadura no município de Ceres-GO. O experimento foi desenvolvido na Fazenda Experimental do IF Goiano Campus Ceres. O delineamento experimental foi o de blocos completos casualizados em esquema fatorial 10x3, dez híbridos de milho (Truck, Fórmula, P30F53, P3646H, P30F35H, AGN 30A91H, AGN 30A37H, AG 8088VTPRO, DKB 390 e DKB bi 9438) semeados em três épocas (30/11/2011, 01/02/2012 e 20/02/2012), com três repetições. Os híbridos que apresentaram maior número de fileira de grãos foram Truck, Formula, P30F35H, AG8088PRO. Para altura de planta e da primeira espiga e o diâmetro do colmo houve diferença estatística nas épocas de semeadura. O híbrido DKB Bi 9438 diferiu estatisticamente dos...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1826

1–METILCICLOPROPENO NA MANUTENÇÃO DA QUALIDADE PÓS-COLHEITA DE TAPEREBÁ (SPONDIA MOMBIN L.)
Provedor de dados: 196
Autores: Sanches, Alex Guimarães; Silva, Maryelle Barros da; Moreira, Elaine Gleice Silva; Costa, Jaqueline Macedo.
A vida útil pós-colheita do taperebá é muito curta mesmo em condições de refrigeração, assim o presente trabalho tem por objetivo avaliar a influência de diferentes concentrações de 1–metilciclopropeno (MCP) sobre a conservação e preservação da qualidade deste fruto visando maior tempo de comercialização na forma in natura. Adotou-se um delineamento experimental inteiramente casualizado em arranjo fatorial 4x5 com cinco repetições. A cada três dias os frutos de cada tratamento foram avaliados quanto à perda de massa fresca, firmeza da polpa, pH, o conteúdo de sólidos solúveis, teor de vitamina C, acidez titulável, índice de maturação e taxa respiratória. Os resultados demonstraram efeito significativo em todas as características avaliadas tanto no tempo de...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1398

CONSÓRCIO GUANDU-MILHO-BRAQUIÁRIA PARA INTEGRAÇÃO LAVOURA-PECUÁRIA
Provedor de dados: 196
Autores: Guimarães, Frederico da Silva; Ciappina, Angelina Luzia; Anjos, Rosane Angélica Reis dos; da Silva, Alex; Pelá, Adilson.
A Integração Lavoura-Pecuária (ILP) é uma alternativa para melhor exploração da terra durante o ano. Uma possível melhoria para este sistema é a inserção do feijão guandu anão (Cajanus cajan) visando o aumento no teor de proteína da pastagem durante o período de seca. O presente trabalho objetivou analisar a produtividade de biomassa de milho para silagem (Zea mays) em consórcio com braquiária (Urochloa ruziziensis) e diferentes densidades de feijão guandu. O delineamento experimental foi em blocos casualizados com sete tratamentos e quatro repetições, sendo eles: milho + braquiária + cinco densidades de feijão guandu (50 mil, 100 mil, 150 mil, 200 mil e 300 mil plantas por hectare), milho + braquiária e milho solteiro. A maior produtividade de massa seca...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2218

PRODUTIVIDADE E QUALIDADE DE FRUTOS DE VIDEIRA 'ISABEL' EM FUNÇÃO DAS DOSES DE ETEFON E ÉPOCAS DE PODA
Provedor de dados: 196
Autores: Abreu, Camila Meira; Campos, Luiz Fernandes Cardoso; Ascheri, Diego Palmiro Ramirez; Seleguini, Alexsander.
A videira em região tropical necessita de cuidados diferenciados, quando comparada às regiões de clima temperado, principalmente em relação ao manejo da copa. Objetivou-se com este trabalho avaliar a produtividade e a qualidade dos frutos, influenciados por diferentes épocas de poda aliadas a doses de Ethephon, em duas safras da videira Isabel. O delineamento foi inteiramente casualizado, com dezesseis tratamentos no esquema fatorial 4 x 4, com quatro repetições. O primeiro fator foi composto pelas épocas de poda: na safra de inverno (08/março, 22/março, 05/abril e 19/abril de 2013); na safra de verão (25/agosto, 08/setembro, 22/setembro e 06/outubro de 2013). O segundo fator consistiu em quatro concentrações de Ethephon (0, 720, 1440, 2160 mg i.a. L-1)....
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1170

UNIFORMIDADE DE DISTRIBUIÇÃO DE UM SISTEMA DE IRRIGAÇÃO POR ASPERSÃO VIA PIVÔ CENTRAL
Provedor de dados: 196
Autores: Nascimento, Valderir Facundo; Feitosa, Erialdo Oliveira; Soares, José Ivo.
A inadequada uniformidade de aplicação da água em sistemas de irrigação proporciona excesso em parte da área de cultivo e carência em outra, diminuindo a disponibilidade de água à cultura e aumentando o custo de produção. Nesse sentido, objetivou-se avaliar a uniformidade de aplicação de água por aspersão em pivôs centrais. Foram determinados os seguintes parâmetros: coeficientes de uniformidade (CUC, CUD e CUE) e a eficiência de aplicação. As vazões e pressões dos sistemas foram obtidos de acordo com a metodologia. No pivô central 04 os valores de CUC, CUD encontrados no teste estavam inadequados, abaixo do mínimo recomendado (85%); o CUE foi classificado como razoável e a eficiência de irrigação baixa. No pivô central 05 os valores de CUC e CUE...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1643

APLICAÇÃO DE NITROGÊNIO, POTÁSSIO E CÁLCIO NA CULTURA DA CENOURA
Provedor de dados: 196
Autores: Silva, Luciana Maria da; Basílio, Scarlet de Aguiar; Silva Junior, Rogério Lamim; Benett, Katiane Santiago Silva; Benett, Cleiton Gredson Sabin.
O presente trabalho teve como objetivo avaliar de forma isolada a aplicação de fontes e doses de nitrogênio, modos de aplicação e doses de potássio e doses e modos de aplicação de nitrocálcio, nas características produtivas da cultura da cenoura. Os experimentos foram realizados em campo na Universidade Estadual de Goiás, Câmpus de Ipameri. O delineamento experimental utilizado em ambos foi o de blocos casualizados em esquema fatorial 2 x 5, com quatro repetições. Os dados foram submetidos à análise de variância (teste F) e as médias comparadas pelo teste de Tukey a 5% de probabilidade e foram realizadas análise de regressão. As fontes de nitrogênio e épocas não influenciaram nas características produtivas da cultura da cenoura em nenhuma das variáveis...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1412

SUBSTRATO À BASE DE PEQUI (Caryocar coriaceum) NA PRODUÇÃO DE MUDAS DE TOMATE E PIMENTÃO
Provedor de dados: 196
Autores: Maciel, Tamires Coelho Matias; da Silva, Toshik Iarley; Alcantara, Francisca Dayanne de Oliveira; Marco, Cláudia Araújo; Ness, Ricardo Luiz Lange.
Em meio à riqueza vegetal da Chapada do Araripe ocorre o extrativismo do pequi (Caryocar coriaceum) como importante atividade econômica e social das principais cidades do Cariri Cearense. Assim, o presente trabalho teve como objetivo a utilização dos resíduos dessa atividade como substrato na produção de mudas de tomate (Solanum licopersicum) e pimentão (Capsicum annuum). O experimento foi conduzido na área experimental do Centro de Ciências Agrárias e Biodiversidade da Universidade Federal do Cariri. O delineamento experimental foi inteiramente casualizado com cinco tratamentos e seis repetições, com dezesseis células (plantas) para cada repetição. Os dados obtidos foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey a 5% de...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1551

INTERFERÊNCIA DE PLANTAS DANINHAS NA QUALIDADE E PRODUTIVIDADE DO GRÃO-DE-BICO
Provedor de dados: 196
Autores: Teixeira, Matheus Ferreira França; Biesdorf, Evandro Marcos; Pinheiro, Daniel Teixeira; Barros, Tiago Teixeira Viana; Iglesias, Erick.
O cultivo de grão-de-bico (Cicer arietinum L.) tem sido dificultado devido às interferências das plantas daninhas. Objetivou-se verificar o efeito da interferência de seis diferentes espécies invasoras (Bidens pilosa, Commelina benghalensis, Eleusine indica, Ipomoea grandifolia, Uruchloa brizantha e Uruchloa ruziziensis) na qualidade e produtividade de dois cultivares de grão-de-bico (BRS Aleppo e FLIP 86-77c). A interferência das plantas daninhas reduziu o período vegetativo de ambos os cultivares. A espécie Uruchloa ruziziensis influenciou negativamente o número de vagens do cultivar BRS Aleppo sugerindo ser prejudicial ao cultivo. Além disso, os resultados indicaram que há relação entre o período de convivência e o nível de infestação no número de grãos...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1598

COMPOSIÇÃO FLORÍSTICA E FITOSSOCIOLÓGICA DE UM REMANESCENTE DE FLORESTA OMBRÓFILA MISTA
Provedor de dados: 196
Autores: Bambolim, Amauri; Wojciechowski, Júlio César.
O estudo da composição florística e fitossociológica das florestas naturais são essenciais para a compreensão do funcionamento das comunidades vegetais. O presente estudo teve como objetivo conhecer, analisar e descrever a composição florística e a estrutura do componente arbóreo de um remanescente de Floresta Ombrófila Mista, na Floresta Nacional do município de São Francisco de Paula no estado do Rio Grande do Sul. Foram instaladas 100 parcelas de 10 x 10 demarcadas em um hectare no interior da floresta onde foram medidos e identificados todos os indivíduos com CAP ≥ 30 cm. A densidade total foi de 835 indivíduos/ha, pertencentes a 42 espécies, 29 gêneros e 17 famílias botânicas. As famílias Myrtaceae, Lauraceae e Euphorbiaceae apresentaram o maior...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1173

DESENVOLVIMENTO E CARACTERIZAÇÃO FÍSICO-QUÍMICA DE GELEIA COMUM E EXTRA DE GRAVIOLA COM PIMENTA
Provedor de dados: 196
Autores: Teles, Ana Claudia Martins; Pinto, Ellen Godinho; dos Santos, Janyne Ribeiro; de Oliveira, Camila Fernanda Dias; Soares, Dayana Silva Batista.
A produção de geleias é um processo bastante utilizado, porém algumas frutas com grande quantidade de nutrientes, como é o caso da graviola, são ainda pouco exploradas comercialmente nesses processos. Neste trabalho teve-se como objetivo o desenvolvimento e caracterização de geleia de graviola (Annona muricata) com pimenta “dedo de moça” tipo extra e comum em três concentrações de pectina 0,5; 1,0 e 1,5%. As análises físicas e químicas foram analisadas quanto ao seu teor de sólidos solúveis totais, umidade, vitamina C, Aw (atividade de água), acidez e pH, teste de sinérese e coloração expressa com valores de L*, a*, b*,croma e hue. A acidez e umidade foram influenciadas pela concentração de pectina e também pela concentração de açúcar na geleia extra e...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1341

PRODUÇÃO DE MUDAS DE BATATA-DOCE DE BAIXO CUSTO EM DIFERENTES SUBSTRATOS E NÍVEIS DE ENFOLHAMENTO DE ESTACAS
Provedor de dados: 196
Autores: Vendruscolo, Eduardo Pradi; Martins, Angélica Pires Batista; Campos, Luiz Fernandes Cardoso; Brandão, Daniel Cardoso; Nascimento, Lucas Marquezan; Seleguini, Alexsander.
A batata-doce é um alimento que se destaca como importante fonte de energia e fonte alternativa de carboidratos em substituição à grãos e outros tubérculos. O cultivo rudimentar, através da utilização de ramos para propagação diretamente a campo, é usual e pode, no entanto, ser responsável por um baixo índice de sobrevivência das brotações. Neste aspecto, objetivou-se definir a melhor técnica para obtenção de mudas em ambiente protegido através da utilização de diferentes substratos e níveis de enfolhamento das estacas de batata-doce. Foi empregado o delineamento experimental inteiramente casualizado, em esquema fatorial 4 x 2, sendo quatro substratos (água, solução nutritiva, substrato turfoso saturado com água e substrato turfoso saturado com solução...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1429

ARMAZENAMENTO DE VARIEDADES DE BANANAS EM CONDIÇÕES DE ATMOSFERA MODIFICADA COM PERMANGANATO DE POTÁSSIO
Provedor de dados: 196
Autores: Falcão, Heloisa Alves de Sousa; Fonseca, Andreia Oliveira; Oliveira Filho, Josemar Gonçalves de; Pires, Marcio de Carvalho; Peixoto, José Ricardo.
A banana (Musa spp.) representa uma das principais frutas brasileiras com relação a produção e comercialização. Entretanto, as perdas pós-colheita têm sido bastante significativas. Assim, o presente trabalho teve por objetivo avaliar a qualidade de duas variedades de bananas armazenadas em sistema de atmosfera modificada com a utilização de absorvedor de etileno impregnado com solução de KMnO4, com e sem refrigeração. O delineamento experimental adotado foi em blocos casualizados em arranjo fatorial 2×2×2 com três repetições e seis períodos de armazenamento. Avaliou-se a qualidade dos frutos quanto à perda de massa fresca, teor de sólidos solúveis (SS), acidez titulável (AT) e relação SS/AT. Os resultados indicaram que a combinação do uso da embalagem com...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1734

ESTABILIDADE DE AGREGADOS E TEOR DE MATÉRIA ORGÂNICA EM UM LATOSSOLO VERMELHO SOB UROCHLOA BRIZANTHA APÓS A APLICAÇÃO DE CAMA DE PERU
Provedor de dados: 196
Autores: Betiolo Troleis, Maria Julia; Roque, Cassiano Garcia; Rezende Zuffo Borges, Monica Cristina; Noguerira, Kenio Batista; Gouveia, Natalia Amanda.
O aumento da produção de aves na região Centro-Oeste do Brasil tem produzido um considerável montante de esterco animal para produção em potencial de adubos orgânicos. Objetivou-se com este estudo avaliar os efeitos da aplicação de cama de peru nos teores de matéria orgânica e na estabilidade dos agregados de um Latossolo Vermelho distrófico cultivado com Urochloa brizantha. O delineamento experimental foi em blocos casualizados, com três repetições. Os tratamentos foram constituídos dos seguintes manejos da fertilidade do solo: i) controle; ii) aplicação de 2,5 Mg ha-1 cama de peru; iii) 5 Mg ha-1 cama de peru; iv) 7,0 Mg ha-1 cama de peru; v) 2,5 Mg ha-1 cama de peru + 1,0 Mg ha-1 calcário; vi) 5,0 Mg ha-1 de cama de peru + 1,0 Mg ha-1 calcário, vii) 7,0...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1267

MODELOS DE AFILAMENTO E OTIMIZAÇÃO DE MULTIPRODUTOS DE UM POVOAMENTO DE Eucalyptus NÃO DESBASTADO
Provedor de dados: 196
Autores: Lustosa Junior, Ilvan Medeiros; Lima, Mirella Basileu de Oliveira; Nascimento, Beatriz Garcia; Meira Junior, Milton Serpa de; Castro, Renato Vinícius Oliveira.
Este trabalho consiste na seleção de um modelo de taper para descrever o afilamento de fustes das árvores de um povoamento não desbastado, a fim de ser aplicado em um sistema de otimização de corte das árvores para multiprodutos da madeira. O trabalho foi realizado no município de Martinho Campos, Minas Gerais, tendo com área de estudo um povoamento do híbrido Eucalyptus grandis W. Hill X Eucalyptus urophylla S. T. Blake, implantado em janeiro de 2007. Dentre os modelos de taper ajustados, o modelo de Garay foi o que melhor representou o afilamento dos fustes das árvores quando verificou as estatísticas de precisão e as análises gráficas dos resíduos. Posterior ao ajuste desse modelo obteve-se a seguinte equação para estimativa dos diâmetros ao longo do...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2216

MUDAS DE JAMBOLÃO SOB NÍVEIS DE SOMBREAMENTO, BANCADAS REFLETORAS E PROFUNDIDADE DE SEMEADURA
Provedor de dados: 196
Autores: Salles, Josiane Souza; Lima, Alexandre Henrique Freitas de; Costa, Edilson.
A fase de formação de mudas frutíferas é muito importante para implantação ou renovação de pomares. O trabalho avaliou níveis de sombreamento, material refletor em bancadas de cultivo e profundidade de semeadura para mudas de jambolão, na Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Cassilândia – MS. Foram avaliados quatro níveis de sombreamento 0, 18, 30 e 50%, dois tipos de bancadas (com e sem material refletor de papel alumínio) e duas profundidades de semeadura (2 e 4 cm). Nos ambientes o experimento foi conduzido em delineamento experimental inteiramente casualizado, em esquema fatorial 2 x 2 com 5 repetições. Os ambientes foram comparados pela análise conjunta. Foram avaliados os parâmetros de crescimento e razões...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2181

ADUBAÇÃO COM BORO NO CRESCIMENTO DE MUDAS DE MOGNO-AFRICANO
Provedor de dados: 196
Autores: Araújo, Matheus da Silva; Melo, Marcela Amaral de; Hodecker, Bárbara Elias Reis; Barretto, Vitor Corrêa de Mattos; Rocha, Ednaldo Cândido.
Em razão da escassez de informações sobre adubação em mogno-africano, no presente estudo, objetivou-se avaliar a adubação com boro (B) no crescimento inicial de mudas de mogno-africano (Khaya senegalensis A. Juss). O experimento foi realizado em estufa, em recipientes de plástico com capacidade de 7 dm3 e utilizado como substrato solo Latossolo Vermelho-Amarelo distrófico. O delineamento experimental utilizado foi inteiramente casualizado, com cinco tratamentos e seis repetições. Os tratamentos foram constituídos de cinco doses de B (0; 0,5;1,0; 2,0 e 4,0 mg dm-3), utilizando-se o ácido bórico como fonte. Aos 150 dias após o transplantio foram analisados a altura da planta, o diâmetro do coleto, o número de folíolos e a matéria seca de folhas, caule e...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2183

RECIPIENTE BIODEGRADÁVEL E SUBSTRATOS PARA MUDAS DE MARACUJAZEIRO
Provedor de dados: 196
Autores: Guerra, Mariana Santana; Barbosa, Marcelo Sousa; Costa, Edilson; Costa Vieira, Gustavo Haralampidou.
O descarte incorreto dos recipientes plásticos usados na produção de mudas causa impactos ao ambiente. O maracujazeiro amarelo é produzido em grande escala, tendo importância fármaco-terapêutico, além de ser uma frutífera de produção rápida, sendo para isso imprescindível a obtenção de mudas de qualidade. O objetivo deste trabalho foi avaliar recipientes e substratos na formação de mudas de maracujazeiro. O experimento foi conduzido num delineamento inteiramente casualizado, em esquema fatorial 2 x 4, sendo 2 recipientes e 4 substratos. Como recipientes foram utilizados bucha vegetal e sacos plásticos. Em cada recipiente foram testados os seguintes substratos: 30% de esterco bovino + 70% de vermiculita; 30% de Bioplant + 70% vermiculita; 30% de esterco...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1641

ESTRESSE HÍDRICO SIMULADO EM GENÓTIPOS DE FEIJÃO, MILHO E SOJA
Provedor de dados: 196
Autores: Viçosi, Karen Andreon; Ferreira, Aparecido Alves Serafim; Oliveira, Luis Augusto Batista de; Rodrigues, Fabrício.
O trabalho teve como objetivo simular condições de déficit hídrico, em laboratório, por meio do manitol, para avaliação do desempenho fisiológico de sementes de cultivares de feijão, milho e soja. As sementes foram submetidas à germinação sob condições de estresse hídrico, com os níveis 0, -0,6, -1,2, -1,8 e -2,4 MPa de potencial osmótico, simulados com soluções de manitol (C6H14O6), nas doses: 0; 44; 58; 89,17; 133,75 g L-1. Para cada espécie, foi utilizada quatro repetições por tratamento, composta de 50 sementes colocadas em três folhas de papel Germitest, umedecida com solução de manitol correspondente a 2,5 sua massa, e levadas a uma câmara de germinação por 10 dias. O feijão foi a cultura com maior sensibilidade ao déficit hídrico, com redução da...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2194

EFEITO RESIDUAL DA GESSAGEM E CALAGEM NA RESISTÊNCIA À PENETRAÇÃO OBTIDA COM DOIS PENETRÔMETROS
Provedor de dados: 196
Autores: Oliveira, Marcela Pacola; Roque, Cassiano Garcia; Borges, Monica Cristina Rezende Zuffo; Oliveira, Roberta Pacola; Nogueira, Kenio Batista.
A resistência do solo à penetração é um dos fatores limitantes para o desenvolvimento das culturas. O objetivo foi avaliar o efeito residual de gessagem e calagem na resistência à penetração medida com o penetrômetro de impacto e o eletrônico em sistema de semeadura direta e convencional, em diferentes sistemas de condicionamento do solo. O delineamento utilizado foi de blocos casualizados com os fatores arranjados em parcelas subdivididas. As parcelas receberam as aplicações de calcário e gesso agrícola (Controle, Calcário (3,563 Mg ha-1), Gesso (2 Mg ha-1), Calcário dose recomendada + Gesso (3,563 Mg ha-1 + 2 Mg ha-1), Calcário metade da dose recomendada + Gesso (1,781 Mg ha-1 + 2 Mg ha-1) e Calcário dobro da dose recomendada + Gesso (7,126 Mg ha-1 + 2...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1208

RELAÇÃO ENTRE VELOCIDADE DE DESLOCAMENTO, RENDIMENTO DA CANA-DE-AÇÚCAR E O CONSUMO DE COMBUSTÍVEL DA COLHEDORA
Provedor de dados: 196
Autores: Martins, Murilo Battistuzzi; Ramos, Carlos Renato Guedes; Souza, Fábio Lopes de; Sartori, Maria Márcia Pereira; Lanças, Kléber Pereira.
A colheita mecanizada de cana-de-açúcar apresenta diversos fatores que imprimem à essa atividade um custo elevado; dentre os principais fatores ressalta-se o consumo de combustível. O presente estudo teve como objetivo avaliar o consumo de combustível de uma colhedora de cana-de-açúcar em função da velocidade de deslocamento e do rendimento da cultura. O trabalho foi realizado em canaviais com produtividade de colmos de 65 e 80 t ha–1, sem a despalha prévia por fogo, com espaçamento entrelinhas de 1,5 m. Utilizou-se uma colhedora de cana-de-açúcar de uma linha, onde foi instalado dois fluxometros, para a medição do consumo instantâneo de combustível. Para aquisição dos dados foi usado um controlador lógico programável (CLP). O delineamento foi inteiramente...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1264

COMPARISON OF DIFFERENT MEDIA TO PRODUCE CYMBIDIUM ORCHIDS BY PSEUDOBULBS
Provedor de dados: 196
Autores: Sedaghathoor, Shahram; Golzari Dehno, Gholamreza; Naderi, Rohangiz; Kalatehjari, Sepideh; Kaviani, Behzad.
Nowadays, Orchids are one of the most commercial products in flower markets. One of the propagation methods for Cymbidium is using old pseudobulbs that are thrown out after flowering period. This research carried out using standard Cymbidium back-bulbs based on randomized complete block design with 5 treatments in 3 replications. The trial traits were leaf length, root length, leaf number and root number that were studied for 180 days. The results show that minimum length of root was significant under different growth beds. The minimum percent of rooting was observed in pure sand treatment. The maximum length was observed in pure perlite. The shortest of leaves were gained in perlite + sand treatment and the maximum leaf length was observed in pure perlite...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1701

EFEITO DO PREPARO DO SOLO COM DIFERENTES IMPLEMENTOS SOBRE A RESISTÊNCIA DO SOLO À PENETRAÇÃO
Provedor de dados: 196
Autores: Monteiro, Mario Augusto Chaves; Zoz, Andre; Limede, Arnaldo Cintra; Oliveira, Carlos Eduardo da Silva; Zoz, Tiago.
O preparo de solo é condição essencial para receber a cultura. A resistência do solo à penetração tem sido um dos parâmetros mais utilizados na avaliação de sua estrutura física. O objetivo deste trabalho foi determinar a resistência do solo à penetração mediante o preparo com diferentes implementos agrícolas. O ensaio foi composto pelo preparo do solo com cinco implementos (grade leve, grade intermediária, subsolador, arado de discos e arado de aiveca). Cada implemento foi utilizado para preparar uma faixa de 10 metros de comprimento por 5 metros de largura. Para a realização das avaliações foi descartado 1,0 metro em cada extremidade da faixa preparada. Foi realizada avaliação de resistência do solo à penetração antes de realizar o preparo do solo e...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1468

ENVELHECIMENTO ACELERADO TRADICIONAL E ALTERNATIVO EM SEMENTES DE MELANCIA
Provedor de dados: 196
Autores: Ribeiro Duarte, Rafaelle; Silva Borges, Renato; Silva  da Costa, Geany Giovana; da Silva, Eliamara Marques; dos Santos, Jessica Morgana.
Este trabalho teve por objetivo avaliar a qualidade inicial das sementes de melancia submetidas aos testes de envelhecimento acelerado tradicional e alternativo. Foram empregados dois procedimentos para o envelhecimento acelerado: tradicional (40 ml de água destilada) e método alternativo [solução saturada de NaCl (40 g do sal/100 mL de água)], sob temperatura de 42 ºC durante 24, 48, 72, e 96 horas. O delineamento utilizado foi inteiramente casualizado, em esquema fatorial (2x4) com quatro repetições. Ao término de cada período, as sementes foram submetidas ao teste de germinação e a avaliação da porcentagem de plântulas normais foi realizada aos cinco dias após a semeadura. Os dados da contagem de germinação foram submetidos à análise de variância e as...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2207

RELAÇÃO ENTRE O ESTÁDIO DE ABERTURA FLORAL E PULSING NA VIDA ÚTIL DO COPO DE LEITE
Provedor de dados: 196
Autores: Sanches, Alex Guimarães; Costa, Jaqueline Macedo; Silva, Maryelle Barros da; Moreira, Elaine Gleice Silva; Cosme, Shirley Silva.
O copo de leite é muito apreciado tanto como flor para uso em arranjos florais bem como em jardins, contudo, os aspectos relacionados à determinação do ponto de colheita e o prolongamento da sua vida útil pós-colheita ainda são bem escassos na literatura. Diante disso o presente trabalho tem por objetivo avaliar a relação entre o estádio de abertura floral das espatas de copo de leite e a sua conservação em solução de pulsing a base de ácido cítrico. Para tanto adotou-se um delineamento experimental inteiramente casualizado em esquema fatorial 3 x 4 x 6; três estádios de abertura floral, quatro concentrações de ácido cítrico e seis tempos de armazenamento com cinco repetições e três hastes por parcela experimental. As análises de qualidade e perda de massa...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1400

ADUBAÇÃO NITROGENADA E POTÁSSICA EM SOJA SOB SISTEMAS DE SEMEADURA
Provedor de dados: 196
Autores: Korber, Angelo Henrique Canan; Pinto, Luana Patricia; Pivetta, Laércio Augusto; Albrecht, Leandro Paiola; Frigo, Késia Damaris de Azevedo.
Atualmente, práticas agrícolas sustentáveis que contribuam para maximizar a produtividade da soja nos diversos sistemas de produção são de extrema importância para o agronegócio da cultura no Brasil. O objetivo deste trabalho foi avaliar o desempenho agronômico da soja em função da adubação nitrogenada e potássica em cobertura, em sistema de semeadura cruzada e simples. Em cada sistema de semeadura foram testadas doses de potássio (K2O) aplicadas de forma isolada ou combinada com nitrogênio (N). Os experimentos foram instalados na safra de 2013/2014 e receberam a aplicação de 0, 20, 40, 60 e 80 kg ha-1 de K2O e/ou N, totalizando quatro experimentos. Todos os experimentos foram delineados em blocos casualizados com quatro repetições. Na colheita foram...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1653

MULCHING É UMA OPÇÃO PARA O AUMENTO DE PRODUTIVIDADE DA MELANCIA
Provedor de dados: 196
Autores: Lambert, Ricardo Alexandre; Barro, Leonardo Silva; Carmo, Karoeynne Silva Gomes do; Oliveira, Aldaisa Martins da Silva de; Borges, Andréia Aparecida.
A cobertura do solo com filme plástico (“mulching”) é uma prática agrícola que visa principalmente reduzir a evaporação da água e o aparecimento de plantas daninhas, além de diminuir o uso de herbicida, impedir o contato de frutos e folhas com o solo. Estes benefícios no sistema de produção de melancia podem resultar em menor custo, maior produtividade e qualidade dos frutos produzidos. Neste contexto, objetivou-se com este trabalho avaliar o desenvolvimento, a produtividade e a viabilidade econômica do cultivo de melancia com e sem mulching. O experimento foi conduzido na Estação Experimental do ILES/ULBRA em Itumbiara-GO, utilizando-se a cultivar “Crimson Sweet”. O delineamento experimental utilizado foi o inteiramente casualizado, com dois tratamentos e...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1184

INOCULAÇÃO COM Rhizobium tropici E ADUBAÇÃO FOLIAR COM MOLIBDÊNIO NA CULTURA DO FEIJÃO COMUM
Provedor de dados: 196
Autores: Oliveira, Carlos Alberto Bispo de; Pelá, Gláucia de Mello; Pelá, Adilson.
O feijão comum, em simbiose com a rizobactéria Rhizobium tropici, é capaz de ter a sua exigência de nitrogênio (N) satisfeita com a fixação biológica de nitrogênio (FBN) que por sua vez é afetada pela deficiência de molibdênio (Mo) visto que este nutriente faz parte da enzima nitrogenase, responsável pelo processo. O objetivo deste trabalho foi avaliar a resposta do feijão comum e seus componentes: teor de clorofila, teor de nitrogênio, produtividade de grãos, número de vagens por planta, número de grãos por vagem, peso de mil sementes, matéria fresca da parte aérea (MFPA), matéria seca da parte aérea (MSPA), matéria fresca das raízes (MFR), matéria seca das raízes (MSR), e produção de biomassa da cultura ao uso da inoculação das sementes combinadas com a...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2193

BACTÉRIAS FIXADORAS DE NITROGÊNIO E MOLIBDÊNIO NO CULTIVO DO AMENDOIM EM SOLO DO CERRADO
Provedor de dados: 196
Autores: Santos, Diego Muniz da Silva; Bush, Aécio; Silva, Elijanara Raissa da; Zuffo, Alan Mario; Steiner, Fábio.
O uso de práticas agrícolas sustentáveis que otimizem a fixação biológica de nitrogênio (FBN) pela cultura do amendoim são importantes para assegurar elevados níveis de produtividade. Portanto, neste estudo objetivou-se avaliar a eficiência da aplicação de molibdênio e da coinoculação das sementes com Bradyrhizobium japonicum e/ou Azospirillum brasilense na nodulação, no crescimento e na partição de matéria seca das plantas de amendoim (Arachis hypogaea L., cv. IAC Tatu ST). As plantas foram cultivadas em vasos de 5,5 L preenchidos com um solo arenoso do Cerrado e mantidas em casa de vegetação.O experimento foi disposto no delineamento de blocos casualizados em um esquema fatorial 2 × 4, com quatro repetições. Os tratamentos constituíram da aplicação (+Mo)...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2165

AVALIAÇÃO SENSORIAL E ACEITAÇÃO COMERCIAL DO COGUMELO COMESTÍVEL PLEUROTUS FLORIDA
Provedor de dados: 196
Autores: Gonçalves, Andriele de Oliveira Soares; David, Grace Queiroz; da Silva, Mariana Pina; Peres, Walmor Moya; Yamashita, Oscar Mitsuo.
O cogumelo comestível Pleurotus florida, possui características sensoriais que atraem consumidores de todo o mundo. A região de Alta Floresta apresenta características fisiológicas de natureza ideais para o cultivo desse fungo, o que na prática proporciona emprego para comunidade e oferta comercial do produto com custo inferior ao atual. O objetivo dessa pesquisa foi realizar a avaliação sensorial do cogumelo comestível Pleurotus florida e a verificação da aceitação comercial do mesmo. O método utilizado para levantamento de dados foi aplicação de questionário utilizando escala hedônica de 9 pontos para avaliação sensorial do hiratake in natura e cozido, escala de atitude para teste de aceitação e questão direta para intenção de compra. A tabulação dos...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1614

DIFERENTES DOSES E ÉPOCAS DE APLICAÇÃO DE ZINCO NA CULTURA DA SOJA
Provedor de dados: 196
Autores: Oliveira, Fernando Castro de; Benett, Cleiton Gredson Sabin; Benett, Katiane Santiago Silva; Silva, Luciana Maria da; Vieira, Bruna do Carmo.
A soja é uma das culturas mais importantes do mundo sendo sua produtividade afetada pela deficiência do micronutriente zinco. O presente trabalho teve como objetivo avaliar o efeito de doses e épocas de aplicação de zinco nas características agronômicas da soja, cultivada em solo da região do Cerrado. O delineamento experimental utilizado foi o de blocos casualizados em esquema fatorial 2 x 5, sendo, duas épocas de aplicação (estádio V9 e R1) e cinco doses (0, 3, 6, 9 e 12 kg ha-1 de zinco), com quatro repetições. Avaliou-se teor de zinco foliar, teor relativo de clorofila, altura de planta, diâmetro do caule, altura de inserção da primeira vagem, número de vagens por planta, número de grãos por vagem, número de nós reprodutivos por planta, massa de 100...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2188

ANÁLISE TEMPORAL DA MICROBACIA MARIANA NO MUNICÍPIO DE ALTA FLORESTA, MATO GROSSO
Provedor de dados: 196
Autores: Bambolim, Amauri; Donde, Abilene Rodrigues.
O uso do sensoriamento remoto tem sido amplamente utilizado por pesquisadores a fim de obter melhores resultados sobre a constante dinâmica da cobertura vegetal. O presente trabalho teve como objetivo realizar uma análise temporal utilizando técnicas de sensoriamento remoto da Microbacia Mariana, localizada no município de Alta Floresta – MT. Foram utilizadas 3 imagens do satélite Landsat 5 sensor TM dos anos de 1990, 2000 e 2010 e uma imagem do satélite Landsat 8 sensor OLI do ano de 2016. Para a classificação das imagens foi utilizado o classificador não supervisionado máxima verossimilhança para a obtenção da classe Floresta e a classe Uso Alternativo do Solo. A análise demonstrou que os anos de 1990, 2000, 2010 e 2016 apresentaram 54%, 25,5%, 27,25% e...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1613

ANALISE FÍSICO-QUÍMICA DE FRUTOS DE ACHACHAIRU COLETADOS EM DIFERENTES PARTES DA PLANTA
Provedor de dados: 196
Autores: Melo, Márcio Silva; Benett, Cleiton Gredson Sabin; Melo, Bruno Silva; Lourenço, Samara Leticia Oliveira; Barboza, Frederico Severino.
O achachairu, também conhecido como mangostinho, é originária da Bolívia cujo nome científico é Garcinia humilis, pertence à família Clusiaceae. O presente trabalho teve como propósito avaliar a qualidade físico-química de frutos de achachairu em diferentes partes da planta. O experimento foi conduzido no laboratório da Universidade Estadual de Goiás, Câmpus Ipameri, localizado no município de Ipameri-GO. O delineamento experimental utilizado foi o inteiramente casualizado, com três partes de coleta de frutos na planta (superior, mediana e base), sendo cada repetição constituída de três plantas. Os frutos de mangostinho foram utilizados de árvores provenientes do pomar da própria área experimental do Câmpus. Foram realizadas as seguintes avaliações físicas...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2189

PRODUÇÃO DE MANDIOQUINHA-SALSA (Arracacia xanthorrhiza Bancroft) SUBMETIDAS A QUATRO ÉPOCAS DE PLANTIO
Provedor de dados: 196
Autores: Biesdorf, Elivelton Maciel; Biesdorf, Evandro Marcos; de Araújo, Eliezer Melisário; Costa, Eunápio José Oliveira; de Oliveira, Osvaldo José.
O presente trabalho objetivou avaliar o efeito de diferentes épocas de plantio de mandioquinha-salsa Arracacia xanthorrhiza Bancroft, nas condições da região sul Mato-grossense. Testaram-se quatro épocas de plantio a campo, em canteiros, de mudas pré-brotadas: plantio na data 0 (na primavera (22/09/2014)), 90 dias após a data 0 (no verão (22/12/2014)), 180 dias após a data 0 (no outono (21/03/2015)) e 270 dias após a data 0 (no inverno (22/06/2015)). O delineamento utilizado foi o de blocos casualizados com quatro tratamentos e seis repetições. Foi efetuada a colheita aos 270 dias após o plantio. Foram avaliados, na colheita, o número de folhas (NF), matéria seca da planta inteira (MSPI), altura das plantas (AP), massa seca da parte aérea (MSPA) e...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1366

EFEITO DA ADUBAÇÃO NITROGENADA EM COBERTURA NA SEVERIDADE DA FERRUGEM COMUM DO MILHO
Provedor de dados: 196
Autores: Pereira, Igor Souza; Pereira, Márcia Toyota.
A adubação nitrogenada pode interferir positivamente ou negativamente na intensidade de diversas doenças das plantas. Neste contexto, este estudo objetivou avaliar o efeito da aplicação de doses de nitrogênio em cobertura na severidade da ferrugem comum do milho (Puccinia sorghi). O experimento foi instalado na Fazenda Experimental da EPAMIG, em Prudente de Morais (MG), utilizando-se o híbrido de milho-verde AG 4051. O delineamento experimental adotado foi de blocos ao acaso com cinco tratamentos e três repetições. Os tratamentos constituíram da aplicação de cinco doses de N (0, 60, 120, 180 e 240 kg ha-1) na forma de ureia em cobertura. Foram realizadas cinco avaliações (em intervalo semanal) da severidade da doença em 3 folhas marcadas (2 acima e 1...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1688

EFEITO DO SAL DE ÁCIDO CARBOXÍLICO SOBRE NINFAS DE Aphis gossypii GLOVER (1877) (Hemiptera: Aphididae)
Provedor de dados: 196
Autores: Pessoa, Luis Gustavo Amorim; Silva, Willyam Eduardo Bonafede da; Ribeiro, Muller de Paula; Loureiro, Elisângela de Souza; Dias, Pamella Mingotti.
Objetivou-se avaliar o efeito do sal de ácido carboxílico no controle de Aphis gossypi.Para instalação dos experimentos, adultos em fase reprodutiva foram coletados em plantas de algodão cultivadas em casa de vegetação e levados ao laboratório, sendo acondicionados em placas de Petri (6 cm de diâmetro) contendo discos foliares de algodão fixadas em uma fina camada solidificada de ágar-água. Os adultos permaneceram nos discos por 24 horas, sendo as ninfas produzidas utilizadas para aplicação dos tratamentos. Foram utilizadas ninfas de primeiro e terceiro ínstares. Os tratamentos foram aplicados com auxílio de torre de Potter sendo compostos por diferentes concentrações do sal de ácido carboxílico BIO ADD (0,25%; 0,5% e 0,75%), além do tratamento testemunha...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2197

DIVERSIDADE DE INSETOS EM PLANTAS HOSPEDEIRAS PRÓXIMAS ÀS ÁREAS DE CULTIVO DE MILHO E ALGODÃO
Provedor de dados: 196
Autores: Oliveira, Rafael Alvim G.; Rando, Jael Simões Santos.
As plantas hospedeiras servem como refúgios para os insetos no período de entressafra, onde se alimentam, acasalam ou ficam em diapausa aguardando novo plantio para que os indivíduos sobreviventes se dirijam à lavoura. Este estudo teve como objetivo avaliar a diversidade de insetos em treze espécies de plantas espontâneas próximas a áreas de cultivo de algodão e milho no período de entressafra. Foram selecionadas quatro plantas hospedeiras e realizadas avaliações mensais por observação direta e identificados os insetos. Foi realizada a análise faunística determinando-se a riqueza, índice de diversidade de Margalef e Shannon-Wiener e índice de equitabilidade. Foram coletados indivíduos pertencentes às ordens Coleoptera, Hemiptera, Hymenoptera, Diptera,...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1602

DIFERENTES SOLUÇÕES E MÉTODOS DE HIDRATAÇÃO DAS SEMENTES DE SOJA NO POTENCIAL FISIOLÓGICO
Provedor de dados: 196
Autores: Rodrigues, Tiago da Silva; de Souza, Hugo Manoel; Dias, Thais Santos; Osório, Christian Rones Wruck de Souza; Binotti, Flávio Ferreira da Silva.
O experimento teve o intuito de estudar a qualidade fisiológica de sementes de soja utilizando extrato aquoso de Cyperus rotundus e biorreguladores sintéticos, sob diferentes métodos de hidratação. O estudo foi realizado na Universidade Estadual de Mato Grosso do Sul, Cassilândia-MS, utilizando o delineamento inteiramente casualizado, sendo realizado em duas etapas. Na primeira etapa avaliou-se o desempenho do extrato aquoso de C. rotundus a 3%, comparando-o com: testemunha (sem condicionamento); controle - água; Auxina (IBA) a 0,2%; Stimulate® a 0,2%; Nitrato de Cálcio Ca (NO3)2 a 0,2%. Na segunda etapa aferiu-se o melhor método de condicionamento, utilizando-se de extrato aquoso de C. rotundus 3%, em quatro processos de hidratação: testemunha, submersão,...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1232

ATRIBUTOS QUÍMICOS DE UM NEOSSOLO QUARTZARÊNICO DE CERRADO SOB DIFERENTES SISTEMAS DE USO E MANEJO
Provedor de dados: 196
Autores: de Oliveira, Taine Pereira; Ensinas, Simone Cândido; Barbosa, Giselle Feliciani; Nanzer, Marina Chiquito; Barreta, Paulo Gabriel Vechetin.
Os Neossolos são solos com baixa fertilidade natural, porém, as formas de uso e manejo do solo podem alterar seus atributos químicos do solo, com isso objetivou-se quantificar os teores de pH, H+Al, Al, Ca, Mg, P e K e calcular a SB, CTC, m% e V% num Neossolo Quartzarênico sob vegetação nativa, seringueira solteira, seringueira consorciada com abacaxi, pastagem de Brachiaria sp. com 30 anos, pastagem de Brachiaria brizanta cv. Marandu com 3 anos e área de plantio convencional. As amostras de solo foram coletadas em Cassilândia-MS nas camadas de 0-10, 10-20 e 20-30 cm. Os resultados foram submetidos à análise de variância e quando significativa, as médias dos tratamentos foram agrupadas pelo teste de Scott-Knott (p≤0,05). O sistema de pastagem com 3 anos...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2182

CARACTERIZAÇÃO E ESTUDO DA ESTABILIDADE FÍSICA DE SUCO MISTO ADOÇADO DE MANGABA E CAGAITA
Provedor de dados: 196
Autores: Martins da Silva, Herberth Diego; Perfeito, Danielle Godinho de Araújo; da Silva, Anderson Rodrigo; Peixoto, Nei.
O objetivo do trabalho consistiu em desenvolver e avaliar as características físico-químicas e sensoriais do suco tropical misto de mangaba e cagaita e verificar sua estabilidade física. Para isso, foram desenvolvidas três formulações padronizadas em 40% de polpa com as seguintes proporções: Formulação 1) 20% mangaba e 20% cagaita; Formulação 2) 10% mangaba e 30% cagaita; e, Formulação 3) 30% mangaba e 10% cagaita. A caracterização físico-química dos sucos foi avaliada pelo teor de sólidos totais, acidez titulável, pH, sólidos solúveis e ratio. Para avaliação sensorial, cinquenta consumidores não treinados avaliaram aparência, aroma, sabor, textura e impressão global. Após a avaliação sensorial, a formulação de melhor aceitação foi analisada quanto à...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1542

VARIABILIDADE ESPACIAL DA RESISTÊNCIA DO SOLO À PENETRAÇÃO E DA PRODUTIVIDADE DO MILHO
Provedor de dados: 196
Autores: da Silva, Fabricio Justino; Oliveira, Carlos Alberto Alves de; Almeida, Leandro da Silva; de Lima, Leomar Paulo; Guimarães, Ednaldo Carvalho.
O presente trabalho teve como objetivo estudar a variabilidade espacial da resistência do solo à penetração (RP), teor de água no solo (U) e a produtividade na cultura do milho. O experimento foi conduzido no ano agrícola de 2015/2016, na fazenda Sobradinho, da propriedade do Instituto Federal do Triângulo Mineiro, Campus Uberlândia. A resistência à penetração foi determinada através do penetrômetro de impacto (modelo IAA/Planasulcar-Stolf) nas profundidades de 0-10, 10-20 e 20-30, Para analisar as variáveis, utilizou-se cálculos da estatística descritiva e técnicas de geoestatística. Para avaliar a dependência espacial das variáveis empregou-se o cálculo da semivariância e do ajuste dos dados ao semivariograma experimental. Para calcular a produtividade,...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1625

ADUBAÇÃO FOSFATADA NO CULTIVO DE HORTALIÇAS PRODUTORAS DE RAÍZES
Provedor de dados: 196
Autores: Nascimento, Mariana Vieira; Fernandes, Luiz Roberto Silva Guimarães; Xavier, Ricardo Caldas; Benett, Katiane Santiago Silva; Silva, Luciana Maria da.
Objetivou-se avaliar os efeitos de fontes e doses de fertilizantes fosfatados sobre o desenvolvimento e a produtividade de hortaliças produtoras de raízes tuberosas. Foram realizados três experimentos distintos, na Universidade Estadual de Goiás - UEG, Câmpus Ipameri-GO, sendo estudado apenas uma espécie em cada um deles. O delineamento utilizado, para cada experimento, foi o de blocos ao acaso, em esquema fatorial 2 x 5, sendo utilizado cinco doses de fósforo (P) e duas fontes de P com quatro repetições. As espécies estudadas foram: cenoura, beterraba e rabanete, as fontes de P utilizadas foram o Superfosfato simples e o Superfosfato triplo. Foram avaliados a altura de planta; diâmetro e comprimento de raiz; número de folhas; teor de P foliar e de raízes;...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2209

VOLATILIZAÇÃO DE AMÔNIA EM PASTAGEM ADUBADA COM FONTES NITROGENADAS
Provedor de dados: 196
Autores: Chagas, Paulo Henrique Menezes das; Gouveia, Geraldo Candido Cabral; Costa, Geany Giovana Silva da; Barbosa, Willams Ferreira Sousa; Alves, Ana Carolina.
A adubação nitrogenada é essencial para o aumento de produção de forrageiras, porém a fonte de nitrogênio (N) e fatores como o manejo podem ocasionar elevadas perdas de amônia (NH3) por volatilização. O presente trabalho foi conduzido com objetivo de quantificar as perdas de N por volatilização de NH3 em fontes nitrogenadas em pastagem. O experimento foi desenvolvido na Universidade Estadual de Mato Grosso do Sul (UEMS), Unidade Universitária de Cassilândia-MS, utilizando o delineamento experimental em blocos ao acaso com quatro tratamentos (ureia; ureia revestida com polímero; ureia com inibidor de urease; e nitrato de amônia) e cinco repetições. Em todos os tratamentos foi aplicada a dose equivalente a 100 kg ha-1 de N. Para a quantificação da...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1301

CARACTERIZAÇÃO FÍSICO-QUÍMICA DE MÉIS PRODUZIDOS NO ESTADO DE MATO GROSSO DO SUL, BRASIL
Provedor de dados: 196
Autores: Vieira, Gustavo Haralampidou da Costa; Gomes, Maria de Fátima Falcão; Moraes, Atila Norberto; Oliveira, Antônio Franscisco.
O trabalho foi desenvolvido com o objetivo de caracterizar, através de análises físico-químicas, nove amostras de méis oriundas de apiários localizados nos municípios de Cassilândia, Aquidauana e Campo Grande, MS. As amostras foram levadas ao laboratório de análises de alimento da UFMS para determinação dos índices de umidade, sólidos solúveis, cinzas, sólidos insolúveis, reação de Fiehe e reação de Lund, conforme as normas analíticas do Instituto Adolfo Lutz. Todas as amostras foram analisadas em triplicata. Para a umidade foram obtidos valores de 18,6% a 23%. Para os sólidos solúveis foram obtidos valores de 75º a 80 ºBrix. Cinzas apresentaram valores de 0,06% a 0,55%. Sólidos insolúveis variaram de 0,002 a 0,05%. Para a reação de Fiehe apenas uma...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1597

APLICAÇÃO FOLIAR DE EXTRATO DE ALGA NA CULTURA DA BATATA
Provedor de dados: 196
Autores: Backes, Clarice; Lyra Villas Bôas, Roberto; Marques dos Santos, Alessandro José; Ribon, Adriana Aparecida; Bardiviesso, Diógenes Martins.
No presente trabalho, objetivou-se avaliar os efeitos da aplicação foliar do extrato da alga Ascophyllum nodosum no crescimento e produtividade da cultura da batata. O experimento foi conduzido dentro de uma área de plantio comercial de batata no município de Itapetininga-SP. Utilizou-se a variedade Asterix, em um delineamento de blocos ao acaso, com cinco tratamentos e cinco repetições. Os tratamentos foram constituídos de cinco doses de extrato de alga Ascophyllun nodosum, 0; 0,5; 1; 2; e 4 L ha-1, aplicado às plantas via foliar. Ao longo do ciclo foram avaliadas as variáveis: altura da planta; número de hastes por planta; intensidade de coloração verde da folha (ICV); concentração de nutrientes nas folhas e área foliar da quarta folha. Ao final...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1567

MODELAGEM HIPSOMÉTRICA DE Eucalyptus grandis W. HILL EX MAIDEN. NO SUDESTE DO ESTADO DE GOIÁS
Provedor de dados: 196
Autores: Soares, Kálita Luis; Costa, Lidiomar Soares da; Araújo, Matheus da Silva; Calixto Júnior, José Eduardo Dias; Interamnense, Márcio Torreão.
A mensuração da altura é considerada difícil, exigindo um maior tempo para sua determinação. Por isso, em trabalhos de inventários em florestas equiâneas normalmente são mensuradas as alturas de poucas árvores em cada parcela e as alturas das demais árvores do povoamento são estimadas por meio de relações hipsométricas. O presente trabalho objetivou avaliar o ajuste e selecionar modelos hipsométricos para estimar a altura total de povoamento clonal de Eucalyptus grandis W. Hill ex Maiden. no sudeste do Estado de Goiás. O trabalho foi desenvolvido em um plantio florestal clonal de Eucalyptus grandis W. Hill ex Maiden. de um povoamento com área total de 76 hectares. Os dados utilizados no ajuste dos modelos foram provenientes da medição do diâmetro a 1,30 m...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2184

TRICHODERMA NA PROMOÇÃO DO CRESCIMENTO VEGETAL
Provedor de dados: 196
Autores: Chagas, Lillian França Borges; Chagas Junior, Aloisio Freitas; Soares, Layssah Passos; Fidelis, Rodrigo Ribeiro.
Fungos do gênero Trichoderma são uns dos principais micro-organismos de importância para o aumento do crescimento vegetal. Desta forma, objetivou-se com este trabalho avaliar a eficiência da inoculação de Trichoderma asperellum UFT 201, como promotores de crescimento vegetal nas culturas da soja, feijão caupi, arroz e milho, em casa de vegetação. As características de biomassa das culturas foram determinadas através da massa seca da parte aérea, massa seca da raiz e massa seca total, bem como a eficiência relativa. Nas diferentes culturas estudadas, a inoculação de T. asperellum UFT 201 foi superior para as características de biomassa, mostrando o potencial como promotor de crescimento, com aumento acima de 60% em relação à testemunha, para todas as...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1529

ADUBAÇÃO DE COBERTURA COM ENXOFRE NA CULTURA DA RÚCULA
Provedor de dados: 196
Autores: Soares, Michel Moreira; Bardiviesso, Diógenes Martins; Barbosa, Willams Ferreira Souza; Barcelos, Michelle Nunes.
O enxofre apresenta grande importância para o desenvolvimento das culturas, sendo normalmente constatado o aumento da produtividade com o fornecimento deste nutriente em cobertura, entretanto, há poucos estudos que relatam o efeito da adubação com enxofre na cultura da rúcula. Portanto, o objetivo foi de avaliar o desenvolvimento da cultura da rúcula submetida à adubação com enxofre aplicado em cobertura. O delineamento experimental utilizado foi o de blocos ao acaso, com cinco tratamentos (0; 20; 40; 60; 80 mg de S planta-1) e quatro repetições, cada parcela foi constituída por 5 vasos, com quatro plantas cada. Durante o desenvolvimento das plantas foi avaliada a intensidade de cor verde das folhas aos 16, 23 e 30 dias após a emergência. Aos 30 dias após...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1171

ASPECTOS BIOMÉTRICOS DE FRUTOS E SEMENTES DE CAESALPINIA FERREA MART. EX TUL. PROVENIENTES DO SEMIÁRIDO BAIANO
Provedor de dados: 196
Autores: Silva, Reginaldo Muniz da; Cardoso, Adriana Dias; Dutra, Fabrício Vieira; Morais, Otoniel Magalhães.
A biometria de frutos e sementes fornece informações para a conservação e exploração da espécie, permitindo usá-los de forma eficaz e sustentável. Além disso, é considerado instrumento importante para detectar a variabilidade genética dentro de populações e relações com fatores ambientais. Assim, o objetivo do trabalho foi avaliar a morfometria de frutos e sementes da espécie Caesalpinia ferrea Mart. ex Tul.  provenientes de Vitória da Conquista, BA. Para avaliação da biometria foram coletados cem frutos maduros de diferentes árvores matrizes. As características avaliadas foram: comprimento, largura e espessura medidos na linha mediana dos frutos e das sementes com auxílio de um paquímetro digital. O comprimento, largura e espessura média encontrada para...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1427

POTENCIAL FISIOLÓGICO DE SEMENTES DE SOJA EM DIFERENTES DOSES E ÉPOCAS DE APLICAÇÃO DE ZINCO
Provedor de dados: 196
Autores: Oliveira, Fernando Castro de; Benett, Cleiton Gredson Sabin; Benett, Katiane Santiago Silva; Arruda, Natália; Vieira, Bruna do Carmo.
A soja é uma das culturas mais importantes do mundo, porém, quando cultivada em solos com deficiências de nutrientes pode influenciar negativamente no potencial fisiológico das sementes. O objetivo desta pesquisa é avaliar o efeito de doses e épocas de aplicação de zinco no potencial fisiológico de sementes de soja, cultivada em solo da região do Cerrado. O experimento foi instalado no município de Ipameri – Goiás, utilizou-se o delineamento inteiramente casualizado, em esquema fatorial 2 (épocas V9 e R1) x 5 (doses 0, 3, 6, 9 e 12 kg ha-1 de zinco), com quatro repetições. Para avaliar o potencial fisiológico das sementes foi realizado o teste de germinação, os testes tradicionais de vigor para espécie e o teste de tetrazólio. Os resultados foram...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2191

ELABORAÇÃO DE BEBIDA COM EXTRATO HIDROSSOLÚVEL DE SOJA SABORIZADA COM FRUTOS DO CERRADO
Provedor de dados: 196
Autores: Perfeito, Danielle Godinho Araújo; Corrêa, Ivna Moreira; Peixoto, Nei.
Os frutos do Cerrado apresentam atrativas características sensoriais, porém seu consumo é restrito à população local. Visando contribuir para expansão do consumo de cagaita e mangaba, o objetivo do estudo foi elaborar e avaliar a aceitação de bebidas com extrato hidrossolúvel de soja saborizada com esses frutos. Para isso elaborou-se três formulações tendo como base fixa 10% de polpa de fruta e 15% de açúcar, sendo Formulação 1: 10% de polpa de mangaba, Formulação 2: 10% de polpa de cagaita e Formulação 3: 5% de cagaita e 5% de mangaba. Realizou-se a caracterização físico-química tanto das polpas como das bebidas. Estas foram submetidas às análises de pH, acidez total titulável, sólidos solúveis (°Brix), ratio (SS/AT), sólidos totais e cinzas. Para a...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1216

CAPACIDADE COMBINATÓRIA DE MILHO PARA PRODUÇÃO DE GRÃOS SOB NÍVEIS DE FÓSFORO
Provedor de dados: 196
Autores: Melo, Aurélio Vaz de; Taubinger, Markus; Santos, Valdere Martins dos; Cardoso, Dione Pereira; DoVale, Júlio César.
Objetivou-se determinar o tipo de ação gênica predominante no controle de algumas características estimando a capacidade geral de combinação (CGC) e a capacidade específica de combinação (CEC) entre híbridos comerciais de milho para produção de grãos sob diferentes níveis de fósforo. O delineamento experimental utilizado foi em látice 8 x 8 com duas repetições, sendo analisadas três características de interesse para a produção de grãos. As combinações híbridas responderam de forma diferenciada às capacidades de combinações quando submetidas às condições de baixa e alta disponibilidade de fósforo indicando que a seleção deverá ser realizada em ambientes onde os mesmos serão utilizados. Conclui-se que o híbrido AG 8060 possui maior concentração de alelos...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1666

GEOESTATÍSTICA APLICADA NA DETERMINAÇÃO DA COMPACTAÇÃO DO SOLO NO CULTIVO DA CANA-DE-AÇÚCAR
Provedor de dados: 196
Autores: Marasca, Indiamara; Gladenucci, Joanina; Spadim, Emanuel Rangel; Barbosa, Rodrigo Domingues; Lanças, Kleber Pereira.
As ferramentas de agricultura de precisão diversificam-se cada vez mais para facilitar a tomada de decisão no campo com o intuito de aumentar a produtividade das culturas para alimentar uma população crescente. A responsabilidade dos profissionais das áreas agronômicas deve ser embasada em estudo e domínio de novas tecnologias. Com esta pesquisa objetivou-se demonstrar a técnica de interpolação de dados para confeccionar mapas de solos utilizando software Gamma Desing e as técnicas da geoestatística.  A resistência à penetração do solo foi obtida até a profundidade de 0,45 m. Para confecção dos mapas dos transeptos para os tratamentos foi utilizado o software Gamma Desing. Os dados para a camada de 0,30 a 0,45 m no preparo convencional foi o único que não...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1462

CARACTERÍSTICAS TECNOLÓGICAS DE FARINHAS VEGETAIS COMERCIAIS
Provedor de dados: 196
Autores: Santana, Gabriela Silva; Oliveira Filho, Josemar Gonçalves de; Egea, Mariana Buranelo.
As farinhas são muito utilizadas no processamento de diversos produtos de panificação e o seu desempenho tecnológico depende de características funcionais previamente descritas. O objetivo deste trabalho foi avaliar as propriedades funcionais tecnológicas de farinhas comerciais de origem vegetal. Foram realizadas análises de índice de absorção de água, capacidade de absorção de óleo, solubilidade em água, capacidade de formação de espuma, estabilidade da espuma, capacidade emulsificante, estabilidade da emulsão e capacidade de formação de gel. A farinha da casca de maracujá apresentou o maior índice de absorção de água (4,85%). Todas as farinhas apresentaram valores satisfatórios para capacidade de absorção de óleo. Os maiores valores de solubilidade em...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1549

PREJUÍZOS DECORRENTES DE PERDAS NA COLHEITA DO ALGODÃO COM DIFERENTES TIPOS DE COLHEDORAS
Provedor de dados: 196
Autores: Leite, Leonardo Aparecido Inacio; Nuss, Aldo.
Com o aumento da procura de algodão, surgiram novas técnicas de cultivo que reduzem o espaçamento entre linhas (0,76 m e 0,45 m), aumentando a densidade de plantas, diminuindo o ciclo da cultura e conduzindo à um consequente aumento de produção. Com as novas tecnologias associadas à fatores tais como climáticos, de topografia do solo, das variedades utilizadas e das regulagens e modelos de colhedoras, surgiram também os problemas com perda na colheita. O objetivo do trabalho foi mensurar e analisar a viabilidade econômica das perdas na colheita do algodão, com alguns modelos de colhedoras, verificando qual modelo oferece melhor rendimento para o espaçamento de 0,45 m entre linhas. A metodologia utilizada foi de estudo de campo, avaliando áreas colhidas por...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1669

INTERFERÊNCIA DE PLANTAS DANINHAS NO CRESCIMENTO DA CULTURA DO TRIGO
Provedor de dados: 196
Autores: Pereira, Gustavo Antônio Mendes; Maciel, Josiane Costa; Santos, José Barbosa dos; Reis, Ricardo Felix dos; Ferreira, Evander Alves.
Dentre os fatores que limitam a expressão do potencial produtivo da cultura do trigo a competição com as plantas daninhas é um dos mais severos causando grandes prejuízos à produtividade e qualidade da produção. Dessa forma, o estudo teve como objetivo avaliar o efeito da competição das espécies E. fosbergii, B. pilosa e G. parviflora, isoladas e em associação no crescimento das plantas de trigo em condição de campo. Para isso, as plantas foram semeadas em diferentes densidades: 0; 23; 46 e 66 plantas daninhas m-2, convivendo com a cultura por 85 dias após a semeadura. As plantas daninhas apresentaram diferentes interferências sobre as variáveis agronômicas e cada espécie competiu com a cultura por diferentes nutrientes. A cultura do trigo é afetada...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1559

MANEJO DA ADUBAÇÃO NITROGENADA NAS CULTURAS DE ALFACE, REPOLHO E SALSA
Provedor de dados: 196
Autores: Nascimento, Mariana Vieira; Silva Junior, Rogério Lamim; Fernandes, Luiz Roberto; Xavier, Ricardo Caldas; Benett, Katiane Santiago Silva; Seleguini, Alexsander; Benett, Cleiton Gredson Sabin.
O adequado fornecimento de nitrogênio é um dos principais fatores de manejo que afetam o rendimento e a qualidade da produção de hortaliças. Este trabalho teve como objetivo avaliar os efeitos da aplicação de doses e fontes de nitrogênio no desenvolvimento e produtividade de alface, repolho e salsa. Os experimentos foram desenvolvidos na Universidade Estadual de Goiás, Campus Ipameri no período de agosto a novembro de 2014. O delineamento experimental utilizado para cada espécie, foi o de blocos ao acaso, em esquema fatorial 2 x 5, sendo duas fontes de N (ureia convencional e ureia revestida com polímero) e cinco doses de nitrogênio (de acordo exigência de cada espécie), com quatro repetições. As espécies utilizadas foram alface crespa Itapuã Super,...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1099

DIVERSIDADE DE MACROFAUNA EDÁFICA EM DIFERENTES AMBIENTES DE CULTIVO NO AGRESTE DA PARAÍBA, BRASIL
Provedor de dados: 196
Autores: Aires Souza, José Thyago; Costa Oliveira, Suenildo Josemo; Medeiros Nápoles, Fábio Agra de; de Souza, Mileny dos Santos; Medeiros, Marcio Raimundo de.
A diversidade da fauna edáfica tem sido indicadora da qualidade do solo em ambientes explorados para atividades agrícolas com constante interferência antrópica; tem se tornado um fator essencial para a manutenção da estrutura e fertilidade edáfica. Objetivou-se identificar a população de macrofauna presente em solo cultivado com as culturas do pinhão manso (Jatropha curcas L.) e laranjeira (Citrus sinensis L.). Foram selecionados sete pontos de coletas fixos onde utilizou-se armadilhas do tipo Provid, enterradas com os bordos das quatro aberturas ao nível da superfície do solo. Após a quantificação dos indivíduos, calculou-se a riqueza (nº de grupos identificados), os índices de frequência, abundância, dominância e constância, obtidos através programa...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1681

VARIABILIDADE ESPACIAL DAS PROPRIEDADES DENDROMÉTRICAS DO EUCALIPTO E ATRIBUTOS QUÍMICOS DE UM NEOSSOLO QUARTZARÊNICO
Provedor de dados: 196
Autores: Lima, Elizeu de Souza; Montanari, Rafael; Lovera, Lenon Henrique; Teixeira Filho, Marcelo Carvalho Minhoto; González, Antonio Paz.
A geração de grandes quantidades de resíduos sólidos e efluentes pelas indústrias de celulose e papel tem se constituído em preocupação ambiental. Este trabalho objetivou analisar as correlações lineares do desenvolvimento individual das árvores de Eucalyptus urograndis, em função dos atributos químicos de um Neossolo Quartzarênico, com vistas a evidenciar zonas específicas de manejo intimamente associadas ao desenvolvimento do eucalipto no intuito de utilizar a lama de cal da extração da celulose na forma de fertilizantes de maneira sustentável ao ambiente. Foi instalada uma malha experimental de aproximadamente 2 ha, contendo 50 pontos amostrais em um Neossolo Quartzarênico e posteriormente coletados atributos de planta e solos para a determinação dos...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1194

INFLUÊNCIA DE FATORES AMBIENTAIS, COR E ALTURA DE ARMADILHAS NA CAPTURA DO CARUNCHO DO BAMBU
Provedor de dados: 196
Autores: Silveira, Edilson Soares; Silva, Rudieli Machado; Roel, Antonia Railda; Cereda, Marney Pascoli.
O objetivo deste trabalho foi avaliar o efeito da influência dos fatores ambientais, cor e altura de instalação de armadilhas com toletes de bambu na captura do Dinoderus minutus, considerado a principal praga pós-colheita do bambu. A literatura aponta a cor e altura das armadilhas como elementos capazes de influenciar na captura deste inseto. Para avaliar essas hipóteses, foram fabricadas 30 armadilhas de garrafas PET nas cores amarela, preta, branca, azul e transparente. Toletes de bambu Bambusa vulgaris foram cortados e secos em uma estufa a 50±3°C durante 48 h. Em cada armadilha foi inserido um tolete de bambu na posição vertical. As armadilhas foram instaladas a 1,5 m e 2,5 m de altura em relação ao solo, em uma touceira de B. vulgaris. No período do...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1672

CUSTO DE PRODUÇÃO DE SOJA TRANSGÊNICA EM SISTEMA DE SEMEADURA DIRETA EM SÃO DESIDÉRIO-BA
Provedor de dados: 196
Autores: Santos, Conrado Garcia; Martins, Gustavo Luís Mamoré; Silva, Pedro Augusto; Zoz, Tiago.
O objetivo do trabalho foi estimar o custo de produção da soja transgênica, em sistema de semeadura direta na região oeste do estado da Bahia. A pesquisa foi conduzida, na forma de estudo de caso, em uma propriedade rural localizada no município São Desidério (BA). Para levantamento do custo de produção utilizou-se a metodologia do sistema de Custo Operacional Total (COT). Os dados relativos aos coeficientes técnicos da cultura, utilizados no cálculo do custo de produção, foram levantados de uma planilha de controle administrativo, na safra 2015/2016. Foram calculadas médias e porcentagens de cada item do custo de produção de soja em um hectare. O Custo Operacional Total foi de R$ 2001,37 ha-1, contribuindo com maior impacto os herbicidas (33,82%) e adubos...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1430

BIOESTIMULANTE, BIOFERTILIZANTE E INOCULAÇÃO DE SEMENTES NO CRESCIMENTO E PRODUTIVIDADE DA SOJA
Provedor de dados: 196
Autores: Alderete Prieto, Carlos; Rasche Alvarez, Jimmy Walter; Karajallo Figueredo, Julio César; Aguayo Trinidad, Simeón.
Com o objetivo de avaliar o efeito da aplicação de biostimulante (BES), de biofertilizante (BIO) e da inoculação (INO) de sementes de soja com Bradyrhizobium sobre o crescimento e a produtividade da soja foi realizada a pesquisa em Minga Porã, Paraguai, em um Rhodic Paleudult (Latossolo Vermelho). O delineamento experimental foi de blocos ao acaso num arranjo fatorial 3x3x3, com 5 repetições. O fator um foi a aplicação de bioestimulante – controle, 500 mL em 100 kg de semente e 500 mL no estágio R2 da soja. O fator dois foi a aplicação de biofertilizante - controle, 160 e 320 L ha-1 no estágio V1 da soja, e o fator três foi a inoculação com Bradyrhizobium - controle, 200 mL e 400 mL em 100 kg de semente. Foi determinada a altura final de planta, massa de...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1167

INTERFERÊNCIA DO ARRANJO DE PLANTAS DANINHAS NO CRESCIMENTO DO FEIJOEIRO
Provedor de dados: 196
Autores: Lage, Patrícia; da Silveira Júnior, Marcos Antônio; Ferreira, Evander Alves; Pereira, Gustavo Antônio Mendes; Silva, Enilson de Barros.
A produtividade média da cultura do feijoeiro pode ser considerada baixa e entre os fatores que mais impactam nessa perda está a competição com plantas daninhas. Com isso, objetivou-se com esse trabalho quantificar a interferência de duas das principais plantas daninhas que ocorrem na cultura do feijoeiro e o efeito da associação (comunidades) dessas plantas no crescimento da cultura. Foram estudados dois fatores constituído pela combinação de 5 densidades de infestação de plantas daninhas (fator A) e duas espécies de plantas daninhas, Urochloa plantaginea (capim-marmelada) e Bidens pilosa (picão-preto) e a associação das duas (Capim-marmelada + Picão-preto) (fator B). Nas condições em que o experimento foi conduzido, é possível afirmar que o picão-preto...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1568

MONITORAMENTO DE VARIÁVEIS MICROMETEOROLÓGICAS EM DIFERENTES AMBIENTES PROTEGIDOS NO PERÍODO DE INVERNO
Provedor de dados: 196
Autores: Paula, Rita de Cássia Mariano de; Silva, Abimael Gomes da; Costa, Edilson; Binotti, Flávio Ferreira da Silva.
Ambientes distintos podem exercer influência sobre o crescimento e desenvolvimento de mudas devido à diferença entre as variáveis micrometeorológicas. Objetivou-se desta forma, monitorar e comparar as variáveis micrometeorológicas no interior de ambientes protegidos, na Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Cassilândia, MS, no período de 28 de junho a 27 de agosto de 2017. Os ambientes avaliados foram: 1. estufa agrícola coberta com filme de polietileno com tela lateral e frontal de 30% de sombreamento, com tela termorrefletora aluminizada móvel (42/50%); 2. estufa agrícola coberta com filme de polietileno com tela lateral e frontal de 30% de sombreamento, com tela termorrefletora aluminizada móvel (22/30%); 3. telado...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/2210

SUBSTRATOS ORGÂNICOS NA PRODUÇÃO DE MUDAS DE CAFEEIRO EM TUBETES
Provedor de dados: 196
Autores: Pereira, Igor Souza; Lima, Karen Cristina Corrêa de; Melo Junior, Heliomar Baleeiro de.
Considerando-se a importância das mudas na formação de lavoura cafeeira (Coffea arabica L.), objetivou-se avaliar características agronômicas e índices de qualidade de mudas do cafeeiro cv. Topázio MG 1190, produzidos em tubetes com a utilização de diferentes proporções de materiais orgânicos no substrato comercial. O experimento foi em delineamento experimental em blocos casualizados, dispostos em esquema fatorial 4 x 4, sendo quatro fontes de esterco: bovino, cama de frango, coelho e suíno em quatro proporções (0, 20, 40 e 60%) no substrato comercial Bioplant® com quatro repetições. As parcelas foram formadas por sete plantas dispostas em tubetes com volume de 180 mL.  Foram avaliadas as características agronômicas: altura da planta, número de par de...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1254

ESTIMATIVAS VOLUMÉTRICAS PARA UM POVOAMENTO ADENSADO DE EUCALYPTUS SP. EM REGIME DE CURTA ROTAÇÃO
Provedor de dados: 196
Autores: Nunes, Jéssica Silva; Soares, Thelma Shirlen.
Este estudo teve como objetivo estabelecer equações volumétricas, fatores de forma, de empilhamento e de cubicação para um povoamento de eucalipto com 24 meses de idade, implantado em regime de curta rotação, sob diferentes espaçamentos (3,0 m x 0,5 m; 3,0 m x 1,0 m; 3,0 m x 1,5 m; 3,0 m x 2,0 m; 3,0 m x 2,5 m e 3,0 m x 3,0 m), em Jataí-GO. Para o ajuste volumétrico as árvores foram cubadas pelo método de Smalian, sendo avaliadas seis equações para cada espaçamento. Após a seleção das equações realizou-se o teste de identidade de modelos. Também foram obtidos, para cada espaçamento, os fatores de forma, empilhamento e cubicação. A equação oriunda do modelo de Spurr foi selecionada para os espaçamentos 3,0 m x 0,5 m; 3,0 m x 1,5 m e 3,0 m x 2,0 m. Para os...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1661

RESPOSTA DA RÚCULA À ADUBAÇÃO ORGÂNICA COM DIFERENTES COMPOSTOS ORGÂNICOS
Provedor de dados: 196
Autores: Salles, Josiane Souza; Steiner, Fábio; Abaker, João Eduardo Pereira; Ferreira, Thales Silva; Martins, Gustavo Luíz Mamoré.
A adubação orgânica pode conferir maior produtividade ao sistema de produção de hortaliças por melhorar a qualidade do solo e aumentar a rentabilidade do olericultor. Neste contexto, o objetivo deste trabalho foi avaliar a eficiência da aplicação de diferentes resíduos orgânicos no crescimento e na produção de rúcula. O experimento foi realizado na Universidade Estadual de Mato Grosso do Sul, em Cassilândia-MS, em condições de ambiente protegido. Os tratamentos foram constituídos da aplicação isolada ou combinada de diferentes fontes de resíduos orgânicos: 1) esterco de aves (EA); 2) esterco bovino (EB); 3) torta de filtro (TF); 4) esterco de aves + esterco bovino (EA +EB); 5) esterco de aves + torta de filtro (EA+TF); 6) esterco bovino + torta de filtro...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1450

EFEITOS DE DIFERENTES FONTES DE RADIAÇÃO NA FISIOLOGIA E VIDA ÚTIL PÓS-COLHEITA DE CAMU-CAMU
Provedor de dados: 196
Autores: Sanches, Alex Guimarães; Silva, Maryelle Barros da; Moreira, Elaine Gleice Silva; Costa, Jaqueline Macedo; Cordeiro, Carlos Alberto Martins.
Por se tratar de um fruto climatérico, o camu-camu (Myrciaria dúbia (H.B.K.) McVaugh)apresenta uma rápida deterioração em temperatura ambiente, tal fato é atribuído à elevada taxa respiratória do fruto, ao aumento da produção de etileno e perda de água. Assim, o presente trabalho tem por objetivo avaliar os efeitos da irradiação gama e ultravioleta na sua conservação in natura. Os frutos foram mantidos sob refrigeração por um período de 21 dias em DIC fatorial composto por cinco tratamentos e oito tempos de avaliação. A cada três dias os frutos foram avaliados quanto à: perda de massa fresca, firmeza, sólidos solúveis, acidez titulável, pH, vitamina C, carotenóides e taxa respiratória. As fontes de irradiação não diferiram estatisticamente ao longo do...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1190

PROPRIEDADES QUÍMICAS DE UM LATOSSOLO SOB DIFERENTES SISTEMAS DE MANEJO
Provedor de dados: 196
Autores: Santos, Osvaldir Feliciano; Souza, Hugo Manoel; Oliveira, Marcela Pacola; Caldas, Marilise Bittencourt; Roque, Cassiano Garcia.
A utilização do solo para fins agrícolas provoca alterações químicas, físicas e biológicas no solo, podendo ser necessária a intervenção por meio do manejo e utilização de calagem e adubação, sendo que a falta destes procedimentos pode afetar drasticamente os índices de produção. Desta forma, objetivou-se avaliar os efeitos de sistemas de manejo nas propriedades químicas de um Latossolo Vermelho distrófico argiloso do Cerrado brasileiro. Os sistemas avaliados foram: i) sistema de plantio convencional; ii) sistema de plantio direto; e, iii) área de floresta de eucalipto. As amostras de solo foram coletadas nas profundidades de 0-0,20 e 0,20-0,40 m. O delineamento experimental foi em blocos ao acaso no esquema fatorial 3x2 com três repetições. O sistema de...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1185

ATITUDES EM RELAÇÃO À INFORMAÇÃO DE PREÇOS DE ALIMENTOS
Provedor de dados: 196
Autores: Groot, Etiénne.
O Brasil passa por um período com tendência inflacionária e, desta forma, as alterações de preços repercutem no comportamento dos consumidores. Objetivou-se com o presente estudo a avaliação da percepção dos consumidores em relação aos preços dos alimentos, a sua atitude em buscar os menores preços de mercado e a sua propensão a utilizar informações de mídia eletrônica. Para isso, foram consideradas 54 entrevistas pessoais realizadas com consumidores de Dracena/SP, com auxílio de questionário estruturado. Os resultados mostram que, mesmo em ambiente inflacionário, a percepção dos consumidores em relação ao conhecimento dos preços dos produtos ainda é alta, principalmente entre as pessoas com mais de 45 anos de idade. Muitos consumidores pesquisam os preços...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1632

Long time not seen: Expanding the records of Loxosceles amazonica (Araneae: Sicariidae) in the Amazonas state, Brazil
Provedor de dados: 36
Autores: ALMEIDA,Marlus Q.; SALVATIERRA,Lidianne; CARVALHO,Thiago G.; PRESTES,Francisco J.; BRESCOVIT,Antonio D.; GASNIER,Thierry R.
ABSTRACT Spiders of the genus Loxosceles, commonly known as brown recluse spiders, can cause serious accidents in humans. Their venom has a powerful proteolytic and hemolytic action. Each year these spiders are the cause of a great number of araneism in Brazil. This work presents new records of Loxosceles amazonica for the municipal districts of Manaus and Iranduba, Amazonas, Brazil.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Brown recluse spiders; Venomous spider; Loxoscelism; Distribution.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200163

Antileishmanial activity of extracts from Libidibia ferrea: development of in vitro and in vivo tests
Provedor de dados: 36
Autores: COMANDOLLI-WYREPKOWSKI,Claudia Dantas; JENSEN,Bruno Bezerra; GRAFOVA,Iryna; SANTOS,Pierre Alexandre dos; BARROS,Angela Maria Comapa; SOARES,Fabiane Veloso; BARCELLOS,José Fernando Marques; SILVA,Aline Fagundes da; GRAFOV,Andriy; FRANCO,Antonia Maria Ramos.
ABSTRACT Treatment of cutaneous leishmaniasis (CL) is difficult due to the scarce number of drugs able to eliminate completely the intracellular form of the parasite. In the present study, the aim was to evaluate: i) phytochemical properties of extracts from Libidibia ferrea; ii) antileishmanial activity of extracts from L. ferrea against promastigotes and amastigotes of Leishmania (Leishmania) amazonensis and Leishmania (Viannia) guyanensis; iii) the effects of topical treatment using hydrogel containing active extract of L. ferrea on golden hamsters infected with L. (L.) amazonensis. Extracts from leaves, branches and fruits of L. ferrea were obtained with hexane and methanol and were tested by in vitro assays in promastigotes and murine macrophages J774...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cutaneous leishmaniasis; Natural products; Topical formulations; Experimental treatment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400331

Understory host plant and insect gall diversity changes across topographic habitats differing in nutrient and water stress in the Brazilian Amazon rainforest
Provedor de dados: 36
Autores: JULIÃO,Genimar Rebouças; ALMADA,Emmanuel Duarte; COSTA,Flávia Regina Capellotto; CARNEIRO,Marco Antônio Alves; FERNANDES,G. Wilson.
ABSTRACT Topographic gradients in terra firme forests are associated with pronounced changes in soil texture, soil nutrients and distance to the water-table, thereby creating different hydric and nutritional conditions for plants and their associated herbivore community. The aim of this study was to investigate galling species and host plant richness and gall species composition across topographic habitats differing in nutrient and water stress in the Brazilian Amazon rainforest. Nineteen 250 x 3 m plots were randomly sampled in the valley, slope, plateau-slope transition, and plateau habitats in terra firme forests. All individual dicotyledonous plants 1 to 3 meters high were examined for the presence of insect galls. Galling species and host plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Habitat stress; Soil nutrients; Species diversity; Terra firme forest; Topographic gradient.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300237

Elaboration and characterization of snack bars made with ingredients from the Amazon
Provedor de dados: 36
Autores: PRAZERES,Isadora Cordeiro dos; DOMINGUES,Alessandra Ferraiolo Nogueira; CAMPOS,Ana Paula Rocha; CARVALHO,Ana Vânia.
ABSTRACT Snack bars were launched on the market as an alternative for people seeking healthier food options. They are popular portable snacks commonly eaten between meals. This study aimed to develop snack bars made with tapioca flour, Brazil nut and native fruit pulps (açaí, cupuaçu, muruci and taperebá) as well as to assess their physical, physicochemical, microbiological and sensory attributes. The preferred concentration of fruit pulp was 10% in the açaí bar, and 15% in the cupuaçu, muruci and taperebá bars. The acceptance rate of the açaí bars was greater than 70% for the attributes appearance, color, texture, and overall impression, but was lower for flavour. This result may be related to the eating habits of some panelists, who eat açaí pulp without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon fruits; Brazil nut; Palm oil; Sensory analysis; Tapioca flour.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200103

Observational and experimental evaluation of hemiparasite resistance in trees in the urban afforestation of Santarém, Pará, Brazil
Provedor de dados: 36
Autores: SILVA,Francisco Pinheiro da; FADINI,Rodrigo Ferreira.
ABSTRACT One of the problems affecting the quality of urban trees is their infestation by mistletoes (aerial hemiparasite plants of the order Santalales). Identification of the main types of trees infested, and of the causes of infestation patterns, can help infestation control and the planning of efficient planting regimes. In this sense, the aim of this study was to evaluate the patterns of hemiparasite infestation in trees in an Amazonian urban environment. We aimed to answer (1) which species of mistletoes occur on urban trees in the city of Santarém, in the Brazilian Amazon; (2) what is the proportion and intensity of infestation on infected trees; and (3) if differences in infestation rates among tree species can be explained by mistletoe-tree...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Loranthaceae; Mistletoe; Tree parasites; Urban silviculture.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400311

Spatiotemporal mapping of soybean plantations in Rondônia, Western Brazilian Amazon
Provedor de dados: 36
Autores: COSTA,Olívia Bueno da; MATRICARDI,Eraldo Aparecido Trondoli; PEDLOWSKI,Marcos Antonio; COCHRANE,Mark Alan; FERNANDES,Luiz Cláudio.
ABSTRACT Although soybean production has been increasing in the state of Rondônia in the last decade, soybean planted area has been estimated indirectly using secondary datasets, which has limited understanding of its spatiotemporal distribution patterns. This study aimed to map and analyze spatial patterns of soybean expansion in Rondônia. We developed a classification technique based on Spectral Mixture Analysis (SMA) derived from Landsat imagery and Decision Tree Classification to detect and map soybean plantations in 2000, 2005, 2010, and 2014. The soybean classification map showed 93% global accuracy, 23% omission and 0% of commission errors for soybean crop fields. The greatest increases of soybean cropped area in the state of Rondônia were observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian Amazon; Tropical deforestation; Land-use and land-cover change; Geoprocessing; Agricultural commodities.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100029

Range extension of Diclidurus scutatus (Chiroptera, Emballonuridae) to southwestern Amazonia
Provedor de dados: 36
Autores: NOVAES,Roberto Leonan Morim; CLÁUDIO,Vinícius Cardoso; KUNIY,Adriana Akemi.
ABSTRACT Diclidurus scutatus is an aerial insectivore bat endemic of South America and considered rare throughout its distribution range. We present the first record of this species in Rondônia State, northern Brazil, expanding its distribution more than 1000 km into southwestern Amazonia. Including this record, D. scutatus is known for 20 localities from eight countries (Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Venezuela), and two biomes-Amazonia and Atlantic Forest.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Distribution; Lesser ghost bat; Western Amazon; Rondônia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400359

Hematological and biochemical responses of pirarucu (Arapaima gigas, Arapaimidae) fed with diets containing a glucomannan product derived from yeast and algae
Provedor de dados: 36
Autores: HOSHINO,Maria Danielle Figueiredo Guimarães; MARINHO,Renata das Graças Barbosa; PEREIRA,Diogle Farias; YOSHIOKA,Eliane Tie Oba; TAVARES-DIAS,Marcos; OZORIO,Rodrigo Otavio de Almeida; RODRIGUEZ,Anselmo Fortunato Ruiz; RIBEIRO,Ricardo Amaral; FARIA,Fernando Sérgio Escócio Drummond Viana de.
ABSTRACT The hematological and biochemical responses of pirarucu fingerlings (Arapaima gigas) fed with diets containing different concentrations of a glucomannan product derived from yeast and algae were evaluated in order to ascertain the effect of these diets on fish physiology. Four treatments were conducted, with three replications, with 12 fish in each tank. The product evaluated (MycosorbA+(r)) was incorporated into the commercial diet, at four concentrations: 0, 1, 2 and 4 g.kg-1, called M0%, M0.1%, M0.2% and M0.4%, respectively. After 45 days of feeding, blood samples from six fish in each replicate were collected to perform the analyses. Their weight and length were determined to calculate the condition factor and weight gain, but no differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorella vulgaris; Saccharomyces cerevisiae; Leukocytes; Albumin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200087

Refractometry as an alternative to the biuret method for measuring total serum proteins in Podocnemis expansa (Podocnemididae) and Phrynops geoffroanus (Chelidae)
Provedor de dados: 36
Autores: PESSOA,Lourdes Marina Bezerra; LIMA,Maíra Gonçalves da Mota; CARNEIRO,Filipe Tavares; ZANANI,Nathalia Salgado; SCALON,Marcela Corrêa; SILVA,Thamiris Figueiredo; LIMA,Mariana Accioly; ABRAHIM,Maia Araújo; PALUDO,Giane Regina.
ABSTRACT Total serum protein is a significant indicator of health condition in animals. The aim of this study was to analyze the precision of the portable refractometer in determining the concentration of total serum proteins in Podocnemis expansa and Phrynops geoffroanus. A total of 26 animals were used. The blood samples were collected from the supraoccipital sinus and stored in tubes without anticoagulant. Total serum protein was determined using both the biuret reaction and refractometry. The total serum protein mean concentration (g dL-1) with biuret method and refractometry for P. expansa were 3.16 and 3.2; and for P. geoffroanus were 3.56 and 2.72, respectively. These results indicate that total serum protein values can be determined with precision...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Biuret method; Refractometry; Podocnemis expansa; Phrynops geoffroanus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100083

Genotype selection and addition of fertilizer increases grain yield in upland rice in Suriname
Provedor de dados: 36
Autores: NASCENTE,Adriano Stephan; KROMOCARDI,Ruby.
ABSTRACT The upland rice farmers in Suriname use local varieties and low level technologies in the field. As a result, the upland rice grain yield is low, at about 1 000 kg ha-1. Our objective was to evaluate the use of upland rice cultivars from Suriname and Brazil, and the effect of nitrogen, N, phosphorus, P, and potassium, K, fertilizers on cultivation variables. We undertook four field trials in the Victoria Area, in the Brokopondo District, using a randomized block design each with four replications. The most productive rice varieties were BRS Esmeralda (grain yield 2 903 kg ha-1) and BRS Sertaneja (2 802 kg ha-1). The highest grain yield of 2 620 kg ha-1 was achieved with a top dressing application of 76.41 kg N ha-1 20 days after sowing. For P, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L.; Rice varieties; Nitrogen; Phosphorus; Potassium.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300185

Population and development in the Amazon: A longitudinal study of migrant settlers in the Northern Ecuadorian Amazon
Provedor de dados: 36
Autores: SELLERS,Samuel; BILSBORROW,Richard; SALINAS,Victoria; MENA,Carlos.
ABSTRACT This paper examines changes over time for a full generation of migrant settlers in the Northern Ecuadorian Amazon (NEA). Data were collected from a 2014 household survey covering a subsample of households surveyed previously in 1990 and 1999. We observed changes in demographic behavior, land use, forest cover, and living conditions. As the frontier develops, human fertility is continuing to decline with contraceptive prevalence rising. Meanwhile, out-migration from colonist households, largely to destinations within the region, persists. More households have secure land tenure than in 1999, and are better off as measured by possession of assets. There is continued growth in pasture, largely at the expense of forest. Farms still serve as an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Family planning; Deforestation; Livelihoods; Migration.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400321

Home range and habitat use by pacas in a montane tropical forest in Bolivia
Provedor de dados: 36
Autores: BENAVIDES,Camila; ARCE,Alejandro; PACHECO,Luis F.
ABSTRACT We studied the home range and habitat use of paca (Cuniculus paca) in a rural agricultural community in the Alto Beni region, in La Paz department, Bolivia, where game meat is the main source of protein for a large portion of local inhabitants. We captured and radio collared five individual paca (4 females and 1 male), which were followed for six months in 2012 to estimate home range of the individuals and assess their habitat use and selection. The total mean home range (95% Minimum Convex Polygon) was 2.26 ha (SD = 0.80), and ranged from 1.5 to 2.96 ha. The mean female home range (2.04 ha) was smaller than the male´s (2.95 ha). Pacas used two (crops and fallows) of the three available habitats (secondary forest patches), and appeared to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Space use; Radiotelemetry; Alto Beni; Cacao; Agroforestry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300227

Temporal progress of teak rust in a tropical area of Tocantins State, Brazil
Provedor de dados: 36
Autores: SALES,Nathana Izabela Silva; LEÃO,Evelynne Urzêdo; CORREIA,Lucas Caius Moreira do Amaral; SIQUEIRA,Chrystian de Assis; SANTOS,Gil Rodrigues dos.
ABSTRACT Rust, caused by Olivea neotectonae, stands out as the main teak disease, causing premature defoliation regardless of the tree’s growth stage. In this study, we aimed to assess the temporal progress of rust in adult teak plants in southern Tocantins State (Brazil). Both rust incidence and severity were evaluated and the disease progress curves were obtained, adjusting to monomolecular, logistic and Gompertz mathematical models. Data from incidence and severity were correlated with climate variables collected by the agrometeorological station located in the study area. Rust incidence reached 100% at 98 days after beginning of the evaluations (DBE). The highest severity (equal or above 75%) was observed at 147 DBE. There was a significant and...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Epidemiology; Tectona grandis; Olivea neotectonae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300277

Disentangling structural patterns of natural forest fragments in a savanna matrix in the eastern Brazilian Amazon
Provedor de dados: 36
Autores: AMARAL,Iêda Leão do; MAGNUSSON,William Ernest; MATOS,Francisca Dionízia de Almeida; ALBERNAZ,Ana Luisa K.; FEITOSA,Yuri Oliveira; GUILLAUMET,Jean-Louis.
ABSTRACT Natural fragments are an important source of richness for the management and conservation of a local flora. The objective of this study was to evaluate the effect of fragmentation on the structure and composition of the plant communities of forest fragments (FF) in Alter do Chão, eastern Brazilian Amazonia. The study sample consisted of 25 FF and nine continuous forest (CF) sites. We compared plant density and species richness between site categories by t-tests, analyzed the differences in composition by cluster analysis, and assessed the effect of fragment size and distance to CF on the basal area and diameter of FF assemblages by linear regression. Individual trees and shrubs with DBH ≥1.27 cm were measured in 2x250 m plots. 17,078 individuals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bray-Curtis; Cluster analysis; Diameter structure; Small trees.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200111

Parasitic diversity of a wild Satanoperca jurupari population, an ornamental cichlid in the Brazilian Amazon
Provedor de dados: 36
Autores: TAVARES-DIAS,Marcos; OLIVEIRA,Marcos Sidney Brito; GONÇALVES,Raissa Alves; NEVES,Lígia Rigor.
ABSTRACT Assessment of biodiversity is fundamental for the understanding of ecological interactions, but fish parasites were neglected in biodiversity estimates for a long time. The aim of this paper was to investigate the diversity of parasites in Satanoperca jurupari in the Amazon River system in Brazil. Of the fish examined, 90.0% were parasitized by one or more species of protozoans and metazoans, and a total of 3,110,094 parasites were collected. Ichthyophthirius multifiliis, Piscinoodinium pillulare, Sciadicleithum juruparii, Clinostomum marginatum, Posthodiplostomum sp., Genarchella genarchella, Argulus multicolor and Ergasilus coatiarus were found. However, I. multifiliis and P. pillulare were the most prevalent, abundant and dominant parasites,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregation; Cichlidae; Freshwater fish; Parasites.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200155

Morphoanatomy and histochemistry analyses of cassava roots do not discriminate resistant from susceptible genotypes to soft root rot
Provedor de dados: 36
Autores: SILVA,Jonny Lucio Sousa; MOURA,Elisa Ferreira; ILKIU-BORGES,Fernanda; GALVÃO,Jessivaldo Rodrigues; FARIAS-NETO,João Tomé de; SILVA,Gisele Barata da; RÊGO,Marcela Cristiane Ferreira; CUNHA,Roberto Lisboa.
ABSTRACT Cassava is an important culture in Brazil and in the North of the country, and soft root rot has affected root production. The aim of this work was to identify root morphoanatomic and histochemical characters associated with root rot resistance. In areas with no occurrence of the disease, nine cassava genotypes were tested, four of which were resistant, and five were susceptible to root rot. Root harvest was carried out twelve months after sowing, and thickness of suber, suber and cortex, and secondary xylem were measured. Moreover, texture, suber cell layers, lignin content, and lignin monomers content of the portion suber and cortex were analyzed. Also, histochemical tests and scanning electron microscopy (SEM) analyses of the roots were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Morphological characterization; Genetic breeding; Manihot esculenta.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100001

Molecular characterization of progenies of bacurizeiro ( Platonia insignis ) from Marajó Island, northeastern Amazon
Provedor de dados: 36
Autores: PONTES,Lígia Cristine Gonçalves; MOURA,Elisa Ferreira; MOURA,Mônika Fecury; RODRIGUES,Simone de Miranda; OLIVEIRA,Maria do Socorro Padilha de; CARVALHO,José Edmar Urano de; THERRIER,Josette.
ABSTRACT The bacurizeiro (Platonia insignis Mart.) is a tree native to the Amazon whose fruit is much used in the gastronomy in the North and Northeast regions of Brazil. Due to its great economic potential for these regions, the species is being conserved in germplasm banks to support genetic breeding programs. The aim of this work was the molecular characterization of P. insignis accessions belonging to the germplasm bank of the Embrapa Eastern Amazon research unit using ISSR (Inter Simple Sequence Repeat) markers. Seventy-eight accessions of P. insignis belonging to 16 progenies were sampled in two different localities on Marajó Island, state of Pará, Brazil. Among the 16 progenies, seven were collected in Soure and nine in Salvaterra. The 78 accessions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic diversity; Germplasm bank; Clusiaceae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400293

New records on the use of man-made constructions as diurnal roosts by bats from the southern Amazon in central Brazil
Provedor de dados: 36
Autores: LIMA,Camila S.; VARZINCZAK,Luiz H.; OLIVEIRA,Rafael de; PASSOS,Fernando C.
ABSTRACT Roosts are a key part of bat species' life stories. Information on roost use enables us to understand the biological processes underlying bat ecology and is crucial with regard to the natural-roost loss and environmental pressures related to habitat destruction that has been considered as a threat affecting bat conservation. The aim of this study was to collect new data on the diurnal artificial-roost use by bats in a landscape from the southern Amazon. We observed bat species roosting at an abandoned house in a highly fragmented ecotone between the Amazon and Cerrado biomes. We observed one Trachops cirrhosus individual roosting in physical contact with one Phyllostomus hastatus. One year later, we noticed a compositional change at this roost, in...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Trachops cirrhosus; Phyllostomus hastatus; Pteronotus parnelli; Roosting behavior.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100079

Analysis of soybean cropland expansion in the southern Brazilian Amazon and its relation to economic drivers
Provedor de dados: 36
Autores: GUSSO,Anibal; DUCATI,Jorge Ricardo; BORTOLOTTO,Virindiana Colet.
ABSTRACT The agricultural dynamics of soybean expansion have long been recognized as a major driver of excessive land cover change on the southwestern border of the Brazilian Amazon. The hypothesis that the soybean market exerts an influence on land use was investigated by the association between economic indicators and soybean crop dynamics in the state of Mato Grosso (western Brazil). We integrated a historical series of satellite data of soybean cropland expansion and the two main economic variables (selling prices and production costs) for soybean in Mato Grosso. We focused on the relation between profit (the difference between the average soybean price and production costs) and land-use transition to soybean from 2001 to 2013. The spatially explicit...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land use; Agriculture; Soybean mapping; Amazon biome.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400281

Passalid (Insecta: Coleoptera: Passalidae) collected from trunks of Scleronema micranthum (Malvaceae)
Provedor de dados: 36
Autores: ABREU,Raimunda Liege Souza de; RONCHI-TELES,Beatriz; VIANEZ,Bazilio Frasco; FONSECA,Claudio Ruy Vasconcelos da; GOUVEIA,Fernando Bernardo Pinto; SILVA,Ediene Borges da.
ABSTRACT Some beetles can attack the wood immediately after the tree is felled, but there are those that start their attack at different stages of wood degradation. Beetles of the family Passalidae belong to this latest category. The objective of this study was to assess the occurrence of beetles of this family in wood samples taken from trunks of Scleronema micranthum, a forest species from Central Amazon. The samples were exposed to biodegradation for 24 months on the forest ground of the Experimental Station of Tropical Silviculture of the National Institute for Amazonian Research, in Manaus, Amazon State, Brazil. During that period, 15 samples were removed from the experiment, every two months, for insect collection and evaluation of infestation. The...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Amazon wood; Beetle; Passalidae; Degradation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100071

Phenotypic and genotypic characterization and compatibility among genotypes to select elite clones of cupuassu
Provedor de dados: 36
Autores: ALVES,Rafael Moysés; SILVA,Carlos Rogério de Sousa; ALBUQUERQUE,Paulo Sérgio Bevilaqua de; SANTOS,Vinicius Silva dos.
ABSTRACT The expansion of the genetic base of cultivated materials is an ongoing activity of the cupuassu (Theobroma grandiflorum) breeding program. However, the parents involved need to be genotypically and phenotypically characterized to ensure compatibility of crossings, as well as to assist in the selection of more promising individuals for hybridization. This study aimed to identify and select T. grandiflorum clones that are compatible and genetically divergent using tools such as the estimates of genotypic, phenotypic, and combined distances, as well as the compatibility rates among clones. The genetic distance analysis of the clones was performed with 14 heterologous microsatellite primers of cocoa (Theobroma cacao) that amplify the DNA of cupuassu....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microsatellites; Tropical fruit; Diversity; Plant breeding; Theobroma grandiflorum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300175

Couple formation and spawning between two female Discus Fish (Symphysodon aequifasciatus - Cichlidae) in captivity
Provedor de dados: 36
Autores: MATTOS,Douglas da Cruz; SCRENCI-RIBEIRO,Rafaela; CARDOSO,Leonardo Demier; JUNIOR,Manuel Vazquez Vidal.
ABSTRACT In an experiment performed to characterize the reproductive behavior of the discus fish in captivity, couple formation with two females was observed. The observations were carried out in captivity, based on ad libitum methodology. Adult individuals were allowed to naturally form couples. The couple formation was considered when individuals performed the substrate cleaning behavior. Fifteen couples were selected. The eggs of three couples did not initiate embryonic development and became infeasible within three days after spawning. We found that these spawnings belonged to all-female couples. The sex of the individuals in same-sex couples was confirmed through subsequent couple formation and spawning of fertile eggs with known males. Eggs were...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Reproduction; Behavior; Aquaculture; Amazonian fish.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200167

Supplementary taxonomic description of Demidospermus pinirampi (Monogenoidea, Dactylogyridae), with a new host record and an expansion of its distribution range
Provedor de dados: 36
Autores: AGUIAR,Julio Cesar Cenci de; BUENO,Glauco Baptista Franco; SANTOS,Sonia Maria Cursino dos; ADRIANO,Edson Aparecido.
ABSTRACT During a survey conducted in the Lajeado Reservoir of the Tocantins River, in the state of Tocantins, Brazil, dactylogyrids were recovered from the gills of Pimelodina flavipinnis. Initial morphological analysis showed these dactylogyrids shared aspects of character with species of Demidospermus, with affinity to Demidospermus pinirampi, despite exhibiting differences with the original description by Kritsky et al. (1987) regarding the vagina, the base of the male copulatory organ and the shape and length of the bars. The analysis of the holotypes of D. pinirampi and its most morphologically close species, Demidospermus luckyi, revealed that these dactylogyrids were indeed D. pinirampi. This study therefore reports a new host and locality of...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: South America; Tocantins; Morphology; Parasite; Pimelodidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400355

Bat necrophagy by a whip-spider (Arachnida, Amblypygi, Phrynidae) in a cave in the eastern Brazilian Amazon
Provedor de dados: 36
Autores: PROUS,Xavier; PIETROBON,Thadeu; RIBEIRO,Mariane S.; ZAMPAULO,Robson de A.
ABSTRACT Amblypygids are among the main predators in the ferriferous caves in Carajás National Forest, state of Pará (Amazon region of Brazil). One of the most common amblypygid species in this region is Heterophrynus longicornis (Butler 1873), and its most frequent prey are crickets of the family Phalangopsidae, which are abundant in the caves of Pará. Because they are primarily predators, necrophagy by amblypygids is not frequent in nature, and there are only two literature records of necrophagy of bats by Amblypygi. On December 11th, 2013, we observed an individual H. longicornis eating a bat carcass in a Pará ferriferous cave. The amblypygid exhibited considerable interest in the bat’s carcass, and it did not interrupt its meal even when lamps or a...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Heterophrynus longicornis; Chiroptera; Cave; Feeding behavior.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400365

Length-weight relationship in ten fish species from the Nhamundá River, the Amazon Basin, Brazil
Provedor de dados: 36
Autores: FREITAS¹*,Tiago Magalhães da Silva; SOUZA¹,Joao Batista de Souza e; PRUDENTE²,Bruno da Silveira; MONTAG²,Luciano Fogaça de Assis.
ABSTRACT Studies on the length-weight relationship (LWR) of fishes are an important tool to describe several biological aspects of the species. Consequently, these studies are relevant due the necessity of comprehension about fish life cycle. Thus, this study aimed to establish the length-weight relationship of the ten most common fish in the Lower Nhamundá River, left tributary of the Amazon River. The capture of fish was conducted in January 2008 using gill nets. A total of 807 individuals, ten species and three Orders (Characiformes, Siluriformes and Clupeiformes) were analyzed. The parameter b varied from 2.680 to 3.698. The LWR were shown for the first time for two species: Anostomoides laticeps and Ageneiosus polystictus. Finally, this research...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Growth pattern; Alometry; Fish; Amazonia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100075

Hundred legs good, two fangs better: adult centipede (Scolopendridae) devoured by a juvenile Amazon lancehead, Bothrops atrox (Viperidae)
Provedor de dados: 36
Autores: SILVA,Karina Maria Pereira da; ALMEIDA-SANTOS,Selma Maria de; BERTANI,Rogério.
ABSTRACT Centipedes are part of the diet of several snake species of the genus Bothrops. However, reports on predation of centipedes by snakes are normally incomplete, and important data for natural history studies as the species identification and size of the prey are rarely published. The aim of this work was to report the presence of the centipede Scolopendra viridicornis in the digestive tract of the Amazon pit viper B. atrox. The snake specimen is an immature female from Aripuanã, state of Mato Grosso, Brazil, having a 623 mm snout-vent length. The centipede is an adult Scolopendra viridicornis, estimated to be 190 mm long, and found in the snake's stomach. The success in preying on this large and potentially dangerous centipede could be explained by...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Diet; Ectothermic prey; Scolopendra.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200171

Postmortem interval estimation based on Chrysomya albiceps (Diptera, Calliphoridae) in a forensic case in the Andean Amazon, Caquetá, Colombia
Provedor de dados: 36
Autores: RAMOS-PASTRANA,Yardany; WOLFF,Marta.
ABSTRACT This is the first application of forensic entomology in a case involving a human corpse found in the urban area of the Municipality of Florencia, Caquetá, Colombia, in the Piedemont of the Colombian Amazon. Three days after removing the body from the scene, pupae and puparia were collected and identified as Chrysomya albiceps (Wiedemann, 1819) (Diptera, Calliphoridae). The postmortem interval was estimated on the basis of previously published data and verified through accumulated degree hours (ADH) and intrapuparial development. The estimated minimum postmortem interval was of 229 hours (9.5 days).
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Forensic science; Carrion insetcs; Death time; Amazon rainforest.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400369

Identification key for the genera of Syrphidae (Diptera) from the Brazilian Amazon and new taxon records
Provedor de dados: 36
Autores: MIRANDA,Gil Felipe Gonçalves.
ABSTRACT Identification keys are essential to properly recognize taxa, and a photographic key not only addresses that issue but can also attract the interest of the general public if designed correctly. Syrphidae is one of the largest families of Diptera, and the Brazilian Amazon holds more taxon records from this family than currently reported. The aim of the current study was to provide an updated photographic identification key, of easy use and access, to the genera of Syrphidae (Diptera) from the Brazilian Amazon region, and identify previously unrecorded taxa. Through a literature review and study of collection material from several institutions, I found 36 new taxon records for the Brazilian Amazon (15 are first records for Brazil) and provided a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flower fly; Live pictures; Neotropical; Online; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100053

A new species of Sarcofahrtiopsis (Insecta, Diptera, Sarcophagidae) from mangrove forests in the Brazilian Amazon, with a key to species identification
Provedor de dados: 36
Autores: CARVALHO-FILHO,Fernando da Silva; SOUZA,Caroline Costa de; SOARES,Jéssica Maria Menezes.
ABSTRACT A new species of Sarcofahrtiopsis Hall, 1933, S. terezinhae sp. nov., is described based on male specimens collected in traps baited with rotting crabs in a mangrove forest in the state of Pará, eastern Brazilian Amazon. This species differs from congeneric species in having vesica with a row of toe-like projections. We provide a key to the species of the genus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flesh fly; Calyptratae; Oestroidea; Brazil; Pará.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400349

Metazoan fauna parasitizing Peckoltia braueri and Pterygoplichthys pardalis (Loricariidae) catfishes from the northeastern Brazilian Amazon
Provedor de dados: 36
Autores: CARDOSO,Adriele Carolina Franco; OLIVEIRA,Marcos Sidney Brito; NEVES,Ligia Rigôr; TAVARES-DIAS,Marcos.
ABSTRACT This study investigated the metazoan parasite fauna in Peckoltia braueri and Pterygoplichthys pardalis from a tributary of the Amazon River system, in northern Brazil. In P. braueri, 630 parasites were collected, belonging to Unilatus unilatus, Nothogyrodactylus sp., Genarchella genarchella, Proteocephalus sp., Gorytocephalus elongorchis, Dolops longicauda and Hirudinea gen. sp., with a dominance of monogenean species. In P. pardalis, 120 parasites were collected, belonging to U. unilatus, Acanthostomum gnerii and Gorytocephalus elongorchis, and this acanthocephalan was the dominant species. In both hosts, the parasites presented clumped distribution, high prevalence, low abundance, low Shannon diversity, and low species richness, with a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digenea; Diversity; Helminths; Parasites; Freshwater fishes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200147

Nestling development of the tropical screech-owl ( Megascops choliba ): a successful case report from the southwestern Amazon
Provedor de dados: 36
Autores: GUILHERME,Edson; SOUZA,Izabele Rodrigues de.
ABSTRACT This study reports a successful reproductive event in Megascops choliba in eastern Acre, northern Brazil. An active M. choliba nest was monitored from the hatching of the eggs to the departure of the nestlings. Once hatched, the nestlings were weighed every two days to verify their weight gain over time. The nestlings remained in the nest for 30 days. The pattern of weight gain was similar to that found in other birds, presenting a rapid increase over the first 15 days, followed by a drastic reduction in the mean growth rate during the second half of the development period. Our observations indicate that the breeding season of M. choliba in southwestern Amazonia is similar as that reported for the species in the northern hemisphere. These are the...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Birds; Strigidae; Growth rate; Nest; State of Acre; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300269

Metacercariae of Austrodiplostomum compactum (Lutz, 1928) (Trematoda, Diplostomidae) infecting the eyes of Plagioscion squamosissimus (Heckel, 1840) (Perciformes, Scienidae) from Lake Catalão, Amazonas, Brazil
Provedor de dados: 36
Autores: ALBUQUERQUE,Natália Brandão de; MOREY,Germán Augusto Murrieta; MORAIS,Aprigio Mota; MALTA,José Celso de Oliveira.
ABSTRACT Austrodiplostomum compactum is a digenetic trematode whith metacercariae that occur in the eyes of a wide variety of fish species. In Brazil, A. compactum metacercariae have been reported in many fish species, but there are only a few studies in the Amazon region. Due to the lack of information in the Amazon, the aim of this study was to report the occurrence of A. compactum metacercariae in the eyes of 15 specimens of Plagioscion squamosissimus from the Lake Catalão, in Amazonas, Brazil. Fishes were collected using gill nets placed randomly in the lake, euthanized in a field laboratory, and had their eyes dissected and examined under a stereomicroscope. A total of 801 metacercariae were registered infecting the eyes of the hosts with a parasitic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corvina fish; Digenea; Parasites; Infection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200141

Repeatability of biometric and fruit and seed yield traits of sacha inchi
Provedor de dados: 36
Autores: VALENTE,Mágno Sávio Ferreira; LOPES,Maria Teresa Gomes; CHAVES,Francisco Célio Maia; OLIVEIRA,Ariane Mendes; FREITAS,Diego Rodrigo Bilby de.
ABSTRACT Repeatability allows an estimation of the number of evaluations needed to optimize the selection of superior genotypes, with consequent effects on the research costs in terms of financial and human resources. The objective of this study was to estimate the coefficient of repeatability of biometric and yield traits, related to fruits and seeds of sacha inchi (Plukenetia volubilis), and to define the number of evaluations required for an efficient selection and evaluation of genotypes of the species. A total of 37 non-domesticated accessions were evaluated for 19 months in a randomized block design with 5 replications and 2 plants per plot. The total number of fruits, total number of seeds, total fruit weight, mean fruit weight, and number of seeds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding; Accuracy; Selection efficiency; Plukenetia volubilis L.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300195

Amphibians and reptiles from Floresta Nacional de Pau-Rosa, Amazonas, Brazil: an important protected area at the heart of Amazonia
Provedor de dados: 36
Autores: FERREIRA,Gisele Cassundé; STURARO,Marcelo J.; PELOSO,Pedro L. Vieira.
ABSTRACT Amazonia harbors the largest and most diverse tropical forest in the world, but knowledge about the species diversity of the region is still far from ideal. Given this low level of faunal and floral knowledge, we present an annotated list of the species of amphibians and reptiles found in Floresta Nacional do Pau-Rosa (FNPR), along the Rio Paraconi, municipality of Maués, state of Amazonas, Brazil. Herpetofauna of the FNPR was sampled with pitfall traps, active search and occasional encounters from February 18 to March 28, 2009. A total of 270 specimens were collected, representing 39 species of amphibians and 24 species of reptiles. At least seven of the species collected at FNPR represented, at the time, unnamed taxa (four of which have now been...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon Basin; Biodiversity; Checklist; Conservation; Herpetology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300259

Bottlenecks in the migration routes of Amazonian manatees and the threat of hydroelectric dams
Provedor de dados: 36
Autores: ARRAUT,Eduardo Moraes; ARRAUT,José Luis; MARMONTEL,Miriam; MANTOVANI,José Eduardo; NOVO,Evlyn Márcia Leão de Moraes.
ABSTRACT In a particular region within western Amazonia, Amazonian manatees (Trichechus inunguis) live in a floodplain environment that becomes inhospitable for them during the annual low-water season. To flee from it, they undergo a dangerous migration to a refuge while water levels are dropping fast. Our aim was to better understand the role of depth variation in this migratory process. We analyzed the sole tracking data on wild manatees (n=10 males), 30 years of Landsat images, a 14-year hydrograph and a 3-D bathymetric model. Migratory routes contained shallower segments, here called 'migratory bottlenecks', which dried out at the end of most lowering-water seasons, blocking the passage to the refuge. Manatees began migrating just in time to traverse...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sirenia; Behavioral plasticity; Mamirauá; Amazon development.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100007

Differencial efficiency of two sampling methods in capturing non-volant small mammals in an area in eastern Amazonia
Provedor de dados: 36
Autores: ARDENTE,Natália Carneiro; FERREGUETTI,Átilla Colombo; GETTINGER,Donald; LEAL,Pricila; MARTINS-HATANO,Fernanda; BERGALLO,Helena Godoy.
ABSTRACT This study was the first to evaluate the efficiency of trapping methods in the study of small mammals in the Carajás National Forest, southeastern Brazilian Amazon. It is an area with a unique vegetation type (metalofilic savannah or Canga). The aims of this study were to compare the efficiency of two trapping methods (i.e. live-traps and pitfalls), the bait types used, and evaluate if trapping success varied seasonally. We used four sampling grids, each with six parallel transects. The trap effort for live-traps and pitfalls was 51,840 trap*nights and 10,800 bucket*nights, respectively. We used three types of bait: a paste of peanut butter and sardines, bacon, and bananas. We placed one type of bait in each trap, alternating between points. We...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Live-traps; Pitfall-traps; Didelphimorphia; Rodentia; Capture rate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200123

Intra-puparial development of Lucilia eximia (Diptera, Calliphoridae)
Provedor de dados: 36
Autores: RAMOS-PASTRANA,Yardany; LONDOÑO,Carlos Andres; WOLFF,Marta.
ABSTRACT There are few studies about the intra-puparial development in Diptera, nonetheless its importance has been increased because several dipteran species are of forensic interest. Studies on the life cycles of flies often disregard the changes that occur inside the pupae. The objectives of this research were to analyze the intra-puparial development of Lucilia eximia, and to describe chronological and morphological changes that occur during this stage. Around 1.600 specimens were laboratory-reared. The pre-pupae were identified by the reduction of their size and change in coloration, and 10 individuals were sampled every three hours (n=1.000) until adult emergence. The specimens were fixed in 96% alcohol, subsequently immersed in Canoy solution for 24...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immature insects; Metamorphosis; Forensic entomology; Postmortem interval.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100063

Agronomic efficiency of Rhizobium strains from the Amazon region in common bean
Provedor de dados: 36
Autores: NOGUEIRA,Cláudia de Oliveira Gonçalves; OLIVEIRA,Dâmiany Pádua; FERREIRA,Paulo Ademar Avelar; PEREIRA,João Paulo de Andrade Rezende; VALE,Helson Mário Martins do; ANDRADE,Messias José Bastos de; MOREIRA,Fatima Maria de Souza.
ABSTRACT To maximize the contribution of biological nitrogen fixation in common bean, it is necessary to use bacterial strains that are more adapted, competitive, and efficient in the symbiotic process. In this regard, the aim of this study was to evaluate the agronomic efficiency (AE) of three bacterial strains isolated from acid soils with high Al content from the Amazon region in an Argissolo Vermelho Distrófico típico soil (Typic Rhodustults - USDA Classification) from the municipality of Formiga, MG, Brazil. We compared their AE to that of the reference strain CIAT 899T and of two controls without inoculation (one without and another with 80 kg ha-1 of N-urea). The results indicated that inoculation with the strains UFLA 02-100 and UFLA 02-127...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Phaseolus vulgaris L.; Rhizobia; Biological nitrogen fixation; Seed inoculation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300273

Feeding ecology of Serrapinnus notomelas (Characiformes: Cheirodontinae) in small forest streams in the Machado River basin, Rondônia, Brazil
Provedor de dados: 36
Autores: COSTA,Igor David da; ROCHA,Vanessa Martins da.
ABSTRACT Studies on the trophic structure of fish give information on species autoecology and their role in the ecosystem. The aims of this study were to characterize the diet of Serrapinnus notomelas in small streams of the River Machado basin and to assess the effect of rainfall seasonality. Fish were collected bimonthly from July 2013 to May 2014 with seine nets and hand nets. The length of each specimen was measured to identify category classes. There were also measured the fullness index and volume of each ingested item, and these data were combined to obtain an alimentary index. We used ANOVA and Kruskal-Wallis to test for differences between length classes and fullness index, Chi-squared tests to detect seasonal differences in origin of food items...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Characidae; Trophic ecology; Igarapés; Ornamental fish; Amazon.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100019

Metazoan parasite communities of Leporinus macrocephalus (Characiformes: Anostomidae) in cultivation systems in the western Amazon, Brazil
Provedor de dados: 36
Autores: MARTINS,Williane M. de O.; JUSTO,Marcia C. N.; CÁRDENAS,Melissa Q.; COHEN,Simone C.
ABSTRACT In the Amazon, the growing demand for fish has been boosting the expansion of fish farms. However, the intensification of cultivation can generate disequilibrium in the parasite-host environment, predisposing fish to parasitic infections. The objective of this study was to evaluate the community structure of metazoan parasites in cultivation systems of piauçu, Leporinus macrocephalus, in the state of Acre, Brazil. We examined 100 specimens from a semi-intensive cultivation system (earth tanks) and 100 from an extensive system (dams). Overall 66.5% of the hosts were parasitized. We collected 1,240 parasite specimens, classified in 15 metazoan taxa (10 monogenoidean, one digenean and four nematodes). The parasite prevalence was higher by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Digenea; Monogenoidea; Nematoda.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400301

Generic additions to the Rapateaceae of Rondônia, Brazil
Provedor de dados: 36
Autores: RODRIGUES,Rodrigo Schütz.
ABSTRACT Rapateaceae is a monocot family centered in the Guiana Shield region of South America. This article reports four generic additions to the Rapateaceae of Rondônia, a state in northern Brazil. Cephalostemon gracilis (Poepp. &amp; Endl.) R.H.Schomb., Duckea cyperaceoidea (Ducke) Maguire, Monotrema xyridoides Gleason, and Schoenocephalium cucullatum Maguire were recorded in lowland savannas and open white-sand ecosystems in the state. These findings extend significantly the known diversity of the Rapateaceae taxa occurring in Rondônia, and represent an extension of their geographical distribution to a Brazilian state with no part of its territory in the Guiana Shield.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Floristics; Guiana Shield; New record.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200095

A critical assessment of INPA’s scientific cooperation based on publications from 2004 to 2014
Provedor de dados: 36
Autores: HENRIQUES,Luiza Magalli Pinto; UNGAR,Mark; REBELO,George Henrique.
ABSTRACT In the 1990s, scientific cooperation at the National Institute for Amazonian Research (Instituto Nacional de Pesquisas da Amazônia - INPA), one of the oldest research institutions in Amazonia with the highest regional international cooperation, was dominated by research conducted by INPA’s foreign partners. In this article, the evolution of this situation is evaluated, with the hypothesis that, as the internal and the external environments have changed over the past decade, this should be reflected in more symmetrical research cooperation. The analysis was based on a 2004 to 2014 Web of Science search of scientific production at INPA, from which 786 papers were recovered. The results indicated an increase in scientific production but without a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon cooperation; Co-authoring; International cooperation; Research networks; Scientific production.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300247

Use and traditional knowledge of Byrsonima crassifolia and B. coccolobifolia (Malpighiaceae) in a Makuxi community of the Roraima savanna, northern Brazil
Provedor de dados: 36
Autores: OLIVEIRA,Rodrigo Leonardo Costa de; SCUDELLER,Veridiana Vizoni; BARBOSA,Reinaldo Imbrozio.
ABSTRACT Byrsonima crassifolia and B. coccolobifolia, popularly known as mirixis, muricis, mantecos or nances, are common fruit species in the Amazonian savannas. Their fruits are used in the preparation of juices and other beverages, while the other parts of the plants are used for different purposes in some indigenous communities. The aim of the present ethnobotanical study was to investigate the knowledge and traditional uses of mirixis in the Darora Indigenous Community, of the Makuxi ethnicity, in the São Marcos Indigenous Land, state of Roraima, northern Brazil. The knowledge on these species among the residents was analyzed considering their gender and age. A survey was carried out by means of semi-structured interviews with 60 respondents (36 men...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fuel-use; Food; Medicinal plants; Plant conservation; Northern Brazilian Amazon.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200133

Assessment of climate change impacts on water resources of the Purus Basin in the southwestern Amazon
Provedor de dados: 36
Autores: DALAGNOL,Ricardo; BORMA,Laura de Simone; MATEUS,Pedro; RODRIGUEZ,Daniel Andres.
ABSTRACT Knowledge about water resources is critical for climate adaptation in face of long-term changes and more frequent extreme events occurrence. During the major droughts of 2005 and 2010, a large epicenter was located in the southwestern Amazon over the Purus River Basin. In this sense, we conducted a hydrological simulation in this basin to assess the climate change impacts on its water resources throughout the 21st century. The water balance was simulated using the Distributed Hydrological Model (MHD-INPE). The future climate projections were simulated by the regional ETA-INPE model driven by a 4-member HadCM3 global model regarding the A1B-AR4/IPCC scenario of greenhouse gases emissions. As simulated by the ETA-INPE/HadCM3, the 4-members mean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Hydrologic modeling; Adaptation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300213

Zootherapy in the Amazon: green anaconda ( Eunectes murinus ) fat as a natural medicine to treat wounds
Provedor de dados: 36
Autores: SOUZA,Erika; WERNECK,Fernanda P.; MATOS,Leonardo B.; FRAGA,Rafael de.
ABSTRACT Zootherapy (the use of the therapeutic potential of animals) is at least 6,000 years old, and has been kept active throughout generations until modern days. Animal fat is commonly used in the zootherapeutic folk medicine from South America, specially the green anaconda’s fat, which is widely promoted as a natural medicine to treat wounds, even though there is no scientific evidence showing its efficacy. In this study we compared the total healing time and the proportional daily reduction of dorsal epithelial incisions in adult male Wistar rats treated with nitrofural (a commercial cicatrizing ointment) and with anaconda fat. We applied the treatments every two days and measured the incision diameter daily, during ten consecutive days. Differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethnozoology; Folk medicine; Snakes; Wistar.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400341

Ethnobotanical study of antimalarial plants in the middle region of the Negro River, Amazonas, Brazil
Provedor de dados: 36
Autores: TOMCHINSKY,Bernardo; MING,Lin Chau; KINUPP,Valdely Ferreira; HIDALGO,Ari de Freitas; CHAVES,Francisco Célio Maia.
ABSTRACT The middle Rio Negro region is an interesting place to seek novel antimalarial compounds because of the traditional knowledge of the Amazon population in conjunction with the high biodiversity of the region. The objective of this work was to study the use of antimalarial plants in Barcelos, state of Amazonas, Brazil. Fifty-two local specialists from eight different communities were interviewed over one year. The identified plants were collected with the assistance of local specialists, classified to species level and deposited in herbarium. In total, 55 antimalarial plants were identified in use in the region, of which 16 had not been previously reported in other published studies. Many factors could be involved with the use of antimalarial plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malaria; Ethnobotany; Amazonia; Medicinal plants; Traditional knowledge.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300203

Topical treatment of experimental cutaneous leishmaniasis in golden hamster (Mesocricetus auratus) with formulations containing pentamidine
Provedor de dados: 36
Autores: COMANDOLLI-WYREPKOWSKI,Claudia Dantas; GRAFOVA,Iryna; NAIFF,Maricleide de Farias; AVELLA,Maurizio; GENTILE,Gennaro; GRAFOV,Andriy; FRANCO,Antonia Maria Ramos.
ABSTRACT Current treatment of cutaneous leishmaniasis (CL) relies mainly on pentavalent antimonials salts and second-line drugs include pentamidine and amphotericin B, but these therapies have side effects and require parenteral administration. The aim of this work was to evaluate the topical formulations containing pentamidine isethionate (PI) in the experimental treatment of cutaneous leishmaniasis (CL). Golden hamsters (Mesocricetus auratus) were infected in the nose with Leishmania (Leishmania) amazonensis. Six treatment groups received different topical treatments of anhydrous or hydrating emulsions, for a maximum of 10 days, with an application of 50 mg day-1. After treatment tissue samples of lesions were evaluated by histology, transmission...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Topical formulations; Experimental treatment; Pentamidine isethionate; Animal model; Leishmania.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100039

New human case reports of cutaneous leishmaniasis by Leishmania (Viannia) naiffi in the Amazon region, Brazil
Provedor de dados: 36
Autores: FIGUEIRA,Luanda de Paula; SOARES,Fabiane Veloso; JÚNIOR,Roberto Daibes NAIFF; VINHOTE-SILVA,Alana Cristina; SILVA,Susi Simas da; ESPIR,Thaís Tibery; NAIFF,Maricleide de Farias; GOMES,Luis Henrique Monteiro; MOREIRA,Flávia Regina Almeida Campos Naief; FRANCO,Antonia Maria Ramos.
ABSTRACT Few cases of human cutaneous leishmaniasis (CL) caused by Leishmania naiffi were described in the medical literature. The aim of this study was to report and analyze new cases of L. naiffi in the period between the years 1992 to 2011. The strains were characterized by isoenzyme analysis. All patients assisted had small lesions; ranging from 1.0x1.0 mm and 13.5x11.5 mm. The lesions observed were widely distributed: 55.5% on the lower limb, 5.5% in the abdominal area, 16.6% on upper limb and 22.2% in upper limb and back. Seventy-two percent of patients had ulcerated lesions. Clinical course of the disease varied from 1 to 10 months. According to gender, most infected individuals were men (83.3%). The patients came from Amazonas (10), Pará (01) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: American Tegumentary Leishmaniasis; Leishmania naiffi; Characterization; Experimental stations; Lutzomyia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100047

DIVERSIDAD DE ORQUÍDEAS DEL SISTEMA FLUVIO LAGUNAR DELTAICO PALIZADA-DEL ESTE, EN EL ÁREA DE PROTECCIÓN DE FLORA Y FAUNA LAGUNA DE TÉRMINOS, CAMPECHE, MÉXICO
Provedor de dados: 37
Autores: ENDAÑÚ-HUERTA,Esthela; LÓPEZ-CONTRERAS,José E.; AMADOR-DEL ÁNGEL,Luis E; CARNEVALI,Germán; GUEVARA-CARRIÓ,Emma; DUNO DE STEFANO,Rodrigo; CETZAL-IX,William.
RESUMEN Se contribuye al conocimiento de la diversidad florística de la familia Orchidaceae presente en el sistema fluvio-lagunar-deltaico Palizada-del Este (SFLD-PE) a partir de los datos obtenidos de 15 recolectas realizadas en diez sitios, durante agosto 2013 a febrero 2014. El listado incluye 27 especies en 17 géneros. Ocho especies son nuevos registros para el SFLD-PE: Bletia purpurea, Catasetum integerrimum, Habenaria pringlei, H. repens, Laelia (Schomburgkia) rubescens, Myrmecophila tibicinis, Ornithocephalus inflexus y Rhetinantha friedrichsthalii. Los géneros con el mayor número de especies son Epidendrum (4) y Prosthechea (4). En lo que respecta al hábito de crecimiento, 23 especies son epífitas (85 %), tres especies son terrestres o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campeche; Laguna de Términos; México; Orquídeas.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300398

POLINIZACIÓN POR ABEJAS EN Syagrus orinocensis (ARECACEAE) EN LA ORINOQUIA COLOMBIANA
Provedor de dados: 37
Autores: NUÑEZ AVELLANEDA,Luis Alberto; CARREÑO,Javier Isnardo.
RESUMEN La ecología de la polinización de Syagrus orinocensis fue estudiada durante tres períodos reproductivos, en un bosque de piedemonte en Casanare, Orinoquia colombiana. Syagrus orinocensis crece hasta 10m., produce de una a cuatro inflorescencias bisexuales aunque ocasionalmente son unisexuales. Las bisexuales presentan flores estaminadas y pistiladas agrupadas en tríadas, y las unisexuales llevan sólo estaminadas en díadas. Las inflorescencias protándricas abren de día, y permanecieron activas 26 días; la fase masculina se extendió los primeros 15 días, siguió una fase inactiva por ocho días, y finalmente, la fase pistilada por tres días. Las inflorescencias fueron visitadas por 43 especies de insectos de los órdenes Coleoptera, Hymenoptera y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arecaceae; Melitofilia; Polinizador eficiente; Síndrome de polinización.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200011

MURCIÉLAGOS DISPERSORES DE SEMILLAS EN GRADIENTES SUCESIONALES DE LA ORINOQUIA (SAN MARTÍN, META, COLOMBIA)
Provedor de dados: 37
Autores: CASALLAS-PABÓN,Diego; CALVO-ROA,Nathaly; ROJAS-ROBLES,Rosario.
RESUMEN La dispersión de semillas por fauna juega un papel fundamental en la reproducción vegetal. Los murciélagos son unos de los dispersores de semillas más importantes en los ecosistemas neotropicales. El objetivo en esta investigación fue describir la comunidad de murciélagos y las semillas que potencialmente dispersan, en el gradiente sucesional (sabana, arbustal, borde de bosque y bosque ripario), de una localidad de la altillanura colombiana. Se midió abundancia, riqueza, diversidad de murciélagos y las semillas de sus heces. Se capturaron 534 individuos pertenecientes a cuatro familias y 39 especies. Las especies más abundantes fueron Carollia perspicillata, Artibeus obscurus y Molossus molossus. C. perspicillata y A. obscurus presentaron los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gremios tróficos; Quiróptera; Restauración ecológica; Sucesión.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300348

EVALUACIÓN DE LA RESPUESTA DE CULTIVOS CELULARES DE (Fouquieria splendens ssp. breviflora) fouquieriaceae BAJO ESTRES HÍDRICO
Provedor de dados: 37
Autores: GUERRERO ZÚÑIGA,Leonor Angélica; RODRÍGUEZ DORANTES,Angélica.
RESUMEN Los cultivos de células vegetales son sistemas experimentales homogéneos altamente controlables que permiten el estudio de adaptaciones bajo condiciones de estrés hídrico, sin la interferencia de los diferentes tejidos y estados del desarrollo vegetal. Una aproximación para comprender esas adaptaciones, es la aparición de proteínas inducidas, resultado de la alteración en la expresión génica. El presente trabajo analizó la respuesta de cultivos de células de Fouquieria splendens ssp. breviflora, expuestos a ácido abscísico (ABA), mediante la caracterización electroforética en cantidad y calidad de las proteínas inducibles de estrés. Se registraron polipéptidos de bajo peso molecular (&lt; 35kDa), comunes bajo la exposición a 10 mM, seguida la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cultivos in vitro; Electroforesis; Proteínas inducibles.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200005

COMPLEMENTARY DESCRIPTION AND RECORD OF Neocyclops ferrarii (Cyclopidae: Halicyclopinae) FROM NORTHERN COLOMBIA
Provedor de dados: 37
Autores: FUENTES-REINÉS,Juan Manuel; SUÁREZ-MORALES,Eduardo.
ABSTRACT The interstitial cyclopoid copepod Neocyclops ferrarii Rocha, 1995 was found in samples obtained from littoral areas of Rodadero Bay, northern Colombia. The specimens from Colombia share the diagnostic features of N. ferrarii presented in the original description. However, the Colombian specimens show some degree of variation with respect to the type material in: 1) the number of teeth in the labrum; 2) the length of outer exopodal spine on female leg 5; 3) the relative length of the mandibular palp setae; 4) length/width ratio of caudal rami; 5) the length ratio of caudal setae VI/III; 6) the length ratio of caudal setae VII/VI; 7) the male body size; 8) the male caudal rami length/width ratio; 9) This is the second record of this species after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal copepods; Caribbean Sea; Distribution; Zooplankton.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100006

CAMBIOS EN LA AVIFAUNA DE UN RELICTO DE BOSQUE EN LA FRANJA PERIURBANA DE BOGOTÁ A LO LARGO DE CATORCE AÑOS
Provedor de dados: 37
Autores: ROSSELLI,Loreta; DE LA ZERDA,Susana; CANDIL,Jonathan.
RESUMEN A lo largo de varios siglos, la vegetación nativa de la parte plana de la Sabana de Bogotá ha sido casi completamente sustituida por cultivos, potreros y urbanizaciones. El último relicto de esta vegetación es un pequeño bosque (ca 10 ha), ubicado en la Hacienda Las Mercedes en el borde norte de la ciudad de Bogotá. El tamaño reducido y aislamiento del bosque, agravado por el crecimiento descontrolado de vegetación invasiva (lianas y zarzamora silvestre) ha generado la pérdida de muchas especies. Sin embargo, en los últimos años el bosque ha sido objeto de acciones de rehabilitación y actualmente la zona está inmersa en una reserva en donde se prevén programas de restauración más amplios. Con el objetivo de evaluar los cambios en la comunidad de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aves; Conservación; Endemismo; Restauración ecológica.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200007

RESPUESTA DE LA CLOROFILA Y EL METABOLISMO DE UN ARROYO ANDINO AL AUMENTO DE TEMPERATURA EN UN EXPERIMENTO ex situ
Provedor de dados: 37
Autores: INFANTE CANGREJO,Viviana; DONATO RONDÓN,Jhon Charles.
RESUMEN En los trópicos, el cambio climático puede significar un incremento en la temperatura que puede afectar la diversidad biológica de los ecosistemas fluviales, favoreciendo la llegada de especies propias de aguas más cálidas. La variación de temperatura puede también afectar las relaciones tróficas y el metabolismo del sistema. En el presente estudio, se analizó el efecto de 2-4 °C de aumento de la temperatura del agua sobre el ensamble de diatomeas y el metabolismo del río Tota (alta montaña andina). Para este propósito, se utilizaron canales artificiales de recirculación, en los que diariamente se midieron variables fisicoquímicas (pH, conductividad, temperatura, oxígeno disuelto y velocidad del agua), se recolectaron e identificaron diatomeas, se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arroyo Neotropical; Biofilm; Cambio climático; Canales recirculantes.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200008

Kinosternon scorpioides scorpioides (TESTUDINES: KINOSTERNIDAE): NUEVO REPORTE EN EL NORORIENTE DE COLOMBIA
Provedor de dados: 37
Autores: CÁCERES-MARTÍNEZ,Carlos Herney; ACEVEDO RINCÓN,Aldemar Alberto; SIERRA LEAL,José Antonio; GONZÁLEZ-MAYA,José F.
RESUMEN Presentamos un nuevo reporte de la tortuga escorpión Kinosternon scorpioides scorpioides para el departamento de Norte de Santander, Colombia. Este espécimen fue colectado en el bosque seco tropical del departamento, el cual es uno de los ecosistemas más amenazados y menos protegidos del país; esto agravado por problemas locales de contaminación y de transformación del uso del suelo, motivos por los que la presencia y conservación de K. s. scorpioides se encuentra en riesgo.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colombia; Kinosternidae; Reporte.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200014

NEST AND CHICKS OF Pseudoscops clamator (AVES: STRIGIDAE) IN THE HIGHLAND PLATEAU OF THE SABANA DE BOGOTÁ, COLOMBIA
Provedor de dados: 37
Autores: RIAÑO,Jeisson; PAQUI,María Fernanda; CÓRDOBA-CÓRDOBA,Sergio; SÁNCHEZ,Francisco.
ABSTRACT The Striped Owl (Pseudoscops clamator) has a wide geographic distribution despite that there is scarce information on its reproductive biology. In this study, we present the first published nesting records of P. clamator for Colombia. We provide data on its nesting habits and reproductive biology from observations between April and May 2013 of a nest found in a plantation of Eucalyptus globulus in Cajicá, Cundinamarca, Colombia. The ground nest is similar to those described from Argentina, Brazil, and Suriname; with a clutch of two where only one chick survived and left the nest after 25-30 days. We found in the owl diet, Brazilian guinea pig (Cavia aperea) and Eared Dove (Zenaida auriculata). Little is known about other species predated by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Andes; Neotropics; Nesting biology; Nocturnal raptors; Owls; Strigiformes.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100011

LA ONTOGENIA Y LA EVOLUCIÓN DESDE LA PERSPECTIVA DE LA TEORÍA DE LOS SISTEMAS DE DESARROLLO (TSD)
Provedor de dados: 37
Autores: DRESSINO,Vicente.
RESUMEN La teoría de los sistemas de desarrollo (TSD) pretende realizar una síntesis conceptual que vincule el desarrollo ontogenético con la evolución. Sus antecedentes pueden ser encontrados básicamente en los trabajos de Waddington y de Bertalanffy quienes aportaron las bases de la canalización del desarrollo y la teoría de sistemas biológicos, respectivamente. El objetivo de este artículo es realizar un análisis conceptual preliminar de la TSD y reflexionar acerca de los aportes potenciales de la TSD como marco teórico para la biología del desarrollo en particular y la biología evolutiva en general. Para ello, se tendrán en cuenta algunos de los conceptos y propuestas que componen este marco y se trabajará sobre datos secundarios obtenidos de la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crecimiento; Epigenética; Evolución; Genética; Naturaleza/cultura.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300265

MELANOMACRÓFAGOS HEPÁTICOS Y ACTIVIDAD DE LA ENZIMA GLUTATION S-TRANSFERASA EN Leptodactylus chaquensis (ANURA, LEPTODACTYLIDAE) COMO BIOMARCADORES DE ESTRÉS OXIDATIVO POR LA EXPOSICIÓN A CLORPIRIFOS
Provedor de dados: 37
Autores: HUESPE,Ivan; CABAGNA-ZENKLUSEN,Mariana; CURI,Lucila Marilén; PELTZER,Paola; ATTADEMO,Maximiliano Andrés; VILLAFAÑE,Noelia; LAJMANOVICH,Rafael.
RESUMEN Se cuantificaron y compararon los melanomacrófagos (MM) y la actividad de la enzima Glutatión S-Transferasa (GST) en hígados de ejemplares adultos de Leptodactylus chaquensis (Anura, Leptodactylidae) colectados en un cultivo de arroz (CA) (siete días posteriores a la aplicación de clorpirifos, CPF) y en un sitio de referencia (SR) en el departamento San Javier, provincia de Santa Fe (Argentina). El análisis histológico reveló una mayor cantidad (p = 0.028) y área ocupada por MM (p = 0.017) y se registró una inhibición en la actividad de la GST (p = 0.030) en individuos del CA respecto a los del SR. Los efectos descriptos evidencian el riesgo ecotoxicológico para los anuros en los cultivos de arroz con aplicaciones de CPF.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anuros; Biomarcadores; Cultivos de arroz; Hígados.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200012

MEDICIÓN DE LA FLUORESCENCIA DE LA CLOROFILA a EN ALGAS ENCAPSULADAS EN ALGINATO DE CALCIO
Provedor de dados: 37
Autores: DELGADILLO RODRÍGUEZ,Ibeth Paola; MONTENEGRO RUÍZ,Luis Carlos; PINILLA AGUDELO,Gabriel Antonio; MELGAREJO,Luz MARINA.
RESUMEN La inmovilización de las algas tiene múltiples aplicaciones, tales como la biorremediación del agua y la producción de metabolitos. Una de las variables que se puede determinar en las algas inmovilizadas es la fluorescencia de la clorofila a, debido a que este parámetro está relacionado con la respuesta fisiológica de estos organismos. Por ello, el objetivo de este estudio fue explorar un método para la medición de la fluorescencia de la clorofila a en algas encapsuladas en esferas de alginato de calcio. Con este fin, se cultivaron dos especies de microalgas (Scenedesmus ovalternus LAUN 001 y Parachlorella kessleri LAUN 002) en monocultivos, tanto en condiciones de cultivo libres (10 mL de la preparación algal en 250 mL de Medio Básico de Bold),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algas inmovilizadas; Eficiencia cuántica potencial del fotosistema II; Microalgas; Parachlorella kessleri; Scenedesmus ovalternus.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200009

ANÁLISIS in silico Y EXPRESIÓN GÉNICA DEL FACTOR DE TRANSCRIPCIÓN TgNACO1 IMPLICADO EN XILOGÉNESIS Y ESTRÉS ABIÓTICO EN Tectona grandis.
Provedor de dados: 37
Autores: CAMEL PAUCAR,Vladimir; GALEANO,Esteban; CARRER,Helaine.
RESUMEN El xilema secundario es el componente más abundante de la biomasa vegetal. Por tanto, conocer los genes que regulan su formación ayudaría a diseñar estrategias para el mejoramiento genético de la madera. Así, el objetivo de este trabajo fue realizar el análisis computacional de la estructura primaria y secundaria del factor de transcripción (FT) TgNACO1 de Tectona grandis, además de evaluar su historia evolutiva, dominios conservados y expresión génica en tejidos lignificados de árboles de 12 y 60 años. Para ello, se realizó una evaluación del potencial de interacción ion-electrón (PIIE), mediante el método del espectro de la información (MEI) utilizando la librería SFAPS de R-Project, seguido del modelamiento estructural utilizando el software...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estructura proteíca; Expresión génica; Factor de transcripción; Método de espectro de la información; Xilema secundario.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300359

QTL IDENTIFICATION FOR CASSAVA BACTERIAL BLIGHT RESISTANCE UNDER NATURAL INFECTION CONDITIONS
Provedor de dados: 37
Autores: SOTO SEDANO,Johana; MORA MORENO,Rubén Eduardo; CALLE,Fernando; LÓPEZ CARRASCAL,Camilo Ernesto.
Cassava, Manihot esculenta Crantz, represents the main food source for more than one billion people. Cassava's production is affected by several diseases, one of the most serious is cassava bacterial blight (CBB) caused by Xanthomonas axonopodis pv. manihotis (Xam). A quantitative trait loci (QTL) analysis for CBB resistance was performed under natural infection conditions, using a mapping population of 99 full-sibs genotypes highly segregant and a SNP-based high dense genetic map. The phenotypic evaluation was carried out in Puerto López, Meta, Colombia, during the rainy season in 2015. Both resistant and susceptible transgressive segregants were detected in the mapping population. Through a non-parametric interval mapping analysis, two QTL were detected,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cassava; Molecular marker; QTL; Resistance; SNPs; Xanthomonas axonopodis pv. manihotis.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100002

MODELO DE CONECTIVIDAD ECOLÓGICA DE FRAGMENTOS DE BOSQUE ANDINO EN SANTA ELENA (MEDELLÍN, COLOMBIA)
Provedor de dados: 37
Autores: COLORADO ZULUAGA,Gabriel Jaime; VÁSQUEZ MUÑOZ,Jorge Luis; MAZO ZULUAGA,Ingrid Natalia.
RESUMEN La fragmentación de bosques y la potencial pérdida de calidad de hábitat asociada es una de las principales causas de pérdida de biodiversidad. Una de las estrategias para fomentar el mantenimiento de la misma a nivel de paisaje es el establecimiento de corredores biológicos que faciliten la conectividad estructural y funcional de los elementos bióticos. Sin embargo, la aplicabilidad y funcionalidad de esta herramienta está limitada por la falta de planeación al momento del diseño y establecimiento de corredores o redes de conectividad que obedezcan a métodos detallados y rigurosos. En esta investigación desarrollamos una propuesta teórica de conectividad ecológica para el corregimiento de Santa Elena, municipio de Medellín, Colombia, empleando...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversidad; Conectividad ecológica; Paisaje.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300379

Laternea pusilla (PHALLALES, PHALLACEAE) UNA NUEVA ESPECIE PARA COLOMBIA
Provedor de dados: 37
Autores: PINZON OSORIO,César Augusto; CASTIBLANCO ZERDA,Andrea; PINZÓN OSORIO,Jonás.
RESUMEN Se registra por primera vez a Laternea pusilla para Colombia, un macrohongo que prolifera en un bosque húmedo montano bajo (bh-MB) de los Cerros Orientales de Bogotá, departamento de Cundinamarca. La especie es descrita e ilustrada con fotografías y se aporta información sobre su distribución, ecología y sustrato de crecimiento. Así, el género Laternea queda representado en el país por dos especies, L. triscapa y L. pusilla.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bogotá; Cuernos hediondos; Gasteromycetes; Micodiversidad neotropical.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100010

ECOLOGICAL ASPECTS OF THE PARASITES IN Cichlasoma bimaculatum (CICHLIDAE), ORNAMENTAL FISH FROM THE BRAZILIAN AMAZON
Provedor de dados: 37
Autores: TAVARES-DIAS,Marcos; ALVES GONÇALVES,Raissa; BRITO OLIVEIRA,Marcos Sidney; RIGÔR NEVES,Ligia.
ABSTRACT This study investigated the parasitic fauna of Cichlasoma bimaculatum of a tributary from the Amazon River system, northern Brazil. The prevalence of infection was 94.6 % and, in total, 428 267 parasites, such as Ichthyophthirius multifiliis, Piscinoodinium pillulare (Protozoa), Gussevia arilla (Monogenoidea), Posthodiplostomum sp. (Digenea) and Procamallanus (Spirocamallanus) inopinatus (Nematoda) were collected. However, the dominance was mainly of I. multifiliis, while P. (S.) inopinatus was the parasite species with the lower levels of prevalence and abundance of infection. These parasite species showed an aggregated dispersion pattern. The parasitic fauna was characterized by the presence of few species of parasites with high prevalence and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregation; Endoparasites; Freshwater fish; Infection.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200006

ANÁLISIS ESPACIAL DE LA INCIDENCIA DE ENFERMEDADES EN DIFERENTES GENOTIPOS DE CACAO (Theobroma cacao L.) EN EL YOPAL (CASANARE), COLOMBIA
Provedor de dados: 37
Autores: CÁRDENAS PARDO,Néstor Julián; DARGHAN,Aquiles; SOSA RICO,Miguel Darío; RODRIGUEZ,Alia.
RESUMEN Las enfermedades "pudrición negra del fruto" y "moniliasis" son reportadas como limitantes en plantaciones de cacao en Colombia. Fueron evaluados los patrones espaciales de incidencia para estas dos enfermedades en un cultivo de cacao durante un monitoreo de trece semanas en campo. Semivariogramas e interpolación kriging fueron usados para analizar el comportamiento espacial de "pudrición negra del fruto", los estadísticos Join Count e Indice de Moran se emplearon para estudiar el comportamiento espacial de "moniliasis". La incidencia de "pudrición negra del fruto" presentó estructura de dependencia espacial de acuerdo a los semivariogramas durante el tiempo de evaluación, mientras que la autocorrelación espacial de sitios de infección de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cacao; Dependencia espacial; Dispersión; Modelos estadísticos; Moniliasis; Pudrición negra del fruto.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200010

ACTIVIDAD ANTIMICROBIANA DE PÉPTIDOS CATIÓNICOS DISEÑADOS A PARTIR DE UN PÉPTIDO NEUTRO
Provedor de dados: 37
Autores: OÑATE-GARZÓN,José Fernando; MANRIQUE-MORENO,Marcela; PATIÑO GONZALEZ,Edwin.
RESUMEN Los péptidos antimicrobianos (PAMs) juegan un papel importante en la inmunidad innata de la mayoría de los organismos; ellos pueden tener actividad en bacterias, hongos, virus y parásitos. El mecanismo de acción de los PAMs catiónicos yace en la capacidad de interactuar con membranas microbianas, debido a la superficie aniónica de dichas membranas. La familia de las cecropinas fue identificada como una de las familias peptídicas más importantes en los insectos. Los péptidos de esta familia, no contienen residuos de cisteína y son clasificados como helicoidales. Para estudiar el efecto de la carga sobre la estructura, nosotros introducimos residuos cargados positivamente en los primeros 18 aminoácidos de la región N-terminal de la cecropina-D (WT),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carga catiónica; Concentración mínima inhibitoria; Gallería mellonella; Péptidos antimicrobianos; Predicción de estructuras.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200004

Bacillus EFFECT ON THE GERMINATION AND GROWTH OF TOMATO SEEDLINGS (Solanum lycopersicum L)
Provedor de dados: 37
Autores: CABRA CENDALES,Teresa; RODRÍGUEZ GONZÁLEZ,Cristian Alonso; VILLOTA CUÁSQUER,Claudia Patricia; TAPASCO ALZATE,Omar Alberto; HERNÁNDEZ RODRÍGUEZ,Annia.
ABSTRACT The capacity to solubilize phosphate and to produce indole compounds Indole Acetic Acid type, was evaluated in 15 strains isolated from castor bean lignocellulosic residues (Ricinus communis). To determine the solubilizing activity of phosphates a qualitative test by using Pikovskaya culture medium was employed and for the evaluation of the production of indole compounds (IAA) a Salkowsky colorimetric analysis technique was applied. Among the microorganisms tested, the Bacillus pumilus GIBI 206 demonstrated capacity to solubilize phosphates and Bacillus subtilis GIBI 200 showed of capacity to solubilize phosphates and to produce Indoleacetic Acid (IAA). To determine the effect of the Bacillus subtilis strain on germination and growth promotion,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biotechnology; Indole; PGPB; Seedlings; Tomato.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100004

ESTADO ACTUAL DEL CONOCIMIENTO SOBRE MICROALGAS DEL PERIFITON Y MACROINVERTEBRADOS BENTÓNICOS EN EL DEPARTAMENTO DEL META, COLOMBIA
Provedor de dados: 37
Autores: MORENO RODRIGUEZ,Fabián; CARO CARO,Clara Ines; PINILLA,Gabriel Antonio; OSORIO,Diana Paola.
RESUMEN El departamento del Meta cuenta con un elevado potencial hidrológico que se traduce en oportunidades para los sectores agrícola, pecuario y ambiental. Por otra parte, se han incrementado considerablemente las actividades de la industria petrolera, lo cual ha traído nuevos retos y amenazas a la región. En consecuencia, los ríos del departamento se ven afectados por vertimientos de diferentes tipos, por captaciones y por modificaciones de los entornos de ribera y de los ambientes bentónicos. Sin embargo, es poco lo que se conoce acerca de estos sistemas y de las comunidades de microalgas y macroinvertebrados que los habitan, las cuales cumplen un papel fundamental en el funcionamiento ecológico de los ríos. Por esta razón se analizan las...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gestión hidrológica; Neotrópico; Piedemonte llanero; Recursos hídricos; Región de la Orinoquia.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300274

NOTES ON THE MARINE ALGAE OF THE INTERNATIONAL BIOSPHERE RESERVE SEAFLOWER, CARIBBEAN COLOMBIA VI: NEW RECORDS OF BROWN ALGAE (PHAEOPHYCEAE)
Provedor de dados: 37
Autores: REYES-GÓMEZ,Viviana Patricia; GAVIO,Brigitte.
ABSTRACT Two species ofbrown algae (Phaeophyceae), Bachelotia antillarum and Dictyota humifusa are reported for the first time for the Archipelago of San Andrés, Providencia and Santa Catalina, part of the International Biosphere Reserve Seaflower.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bachelotia; Brown algae; Dictyota; New records; Seaflower.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200013

EFECTO DE UN QUELANTE DE ZINC EXTRACELULAR SOBRE EL NÚMERO DE CÉLULAS GANGLIONARES EN RETINA DE RATA, Y TRANSPORTADORES DE TAURINA Y DE ZINC EN ESTAS CÉLULAS
Provedor de dados: 37
Autores: MÁRQUEZ GARCÍA,Asarí; SALAZAR,Víctor; LIMA,Lucimey.
RESUMEN La deficiencia de zinc en humanos produce disminución de antioxidantes, asociados a taurina, en la retina y se relaciona con adaptación anormal a la oscuridad, cataratas, ceguera y degeneración macular. Existe escasa evidencia acerca del efecto del zinc sobre el sistema de taurina en retina de mamíferos, por lo cual estudiamos el efecto del zinc sobre el transportador de taurina (TAUT) y los transportadores de zinc (ZnT-1 y 3) usando el quelante de zinc extracelular, ácido dietileno-triamino-penta-acético (DTPA), mediante inmunocitoquímica e inmunohistoquímica fluorescentes en células ganglionares (CG) y en las capas de la retina de ratas. Tres días después de la administración de DTPA (10μM) se utilizaron anticuerpos primarios y secundarios...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Retina; Taurina; Transportador de taurina; Transportadores de zinc; Zinc.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200002

EVALUACIÓN COMPORTAMENTAL DEL TRASPLANTE DE hMSC-GFP+ EN UN MODELO EXPERIMENTAL DE HEMIPARKINSON EN RATA WISTAR
Provedor de dados: 37
Autores: ALCÁZAR ARZUZA,Jéssica Paola; BAYONA ARCINIEGAS,Andrea Julieth; DE LOS REYES,Lina María; TURNER,Liliana Francis.
RESUMEN Se evaluó el efecto del trasplante de hMSC-GFP+ en un modelo experimental de Enfermedad de Parkinson (EP) en 27 ratas Wistar con tres grupos experimentales: control: animales sin cirugía, (CON n=7), lesionado: animales lesionados intracerebralmente con 6-OHDA a nivel de SNpc (LES n = 10) y trasplantado: animales LES con trasplante de hMSC-GFP+ intraestriatalmente (LES-T n = 10). Con el fin de evaluar la influencia del trasplante en el comportamiento motor, un mes después de la lesión, se desarrolló una batería comportamental compuesta por Test Neurológico (compuesto también por Pole Test y Test de Barra transversal, además, de inmunofluorescencia para células de SNpc con TH). Utilizando el test de Anova, se demostró una disminución en el número de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Terapia celular; Células madre mesenquimales; Deterioro motor; Enfermedad de Parkinson; Rata Wistar.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200001

CARACTERIZACIÓN TEMPORO-ESPACIAL DEL PATRÓN DE MARCHA EN ROEDORES COMO MODELO ANIMAL DE LESIÓN CEREBROVASCULAR
Provedor de dados: 37
Autores: CUCARIÁN,Jaison D; LEON,Laura A; LUNA,Gloria A; TORRES,Martha R; CORREDOR,Karen; CARDENAS P,Fernando.
RESUMEN En la investigación sobre movimiento, la experimentación animal ha proporcionado fundamentación científica para la investigación clínica, mejorando procedimientos diagnósticos y de rehabilitación. Lesiones cerebrales en roedores pueden ser usadas para modelar síntomas locomotores, sensoriales y/o cognitivos. Con el propósito de determinar la funcionalidad locomotriz y sensorial en roedores, se han propuesto varios métodos de evaluación y pronóstico clínico para identificar y evaluar adaptaciones estructurales y mecanismos de neuro-recuperación. Esto ha permitido que métodos de intervención terapéutica, como el ejercicio físico, sean utilizados para restaurar funciones sensitivo-motoras y cognitivas en roedores y humanos. La extrapolación...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Accidente cerebrovascular; Actividad motora; Análisis de la marcha; Pruebas funcionales; Roedores.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300307

NIVELES SANGUÍNEOS DE BIOMARCADORES DE DAÑO GENÉTICO EN ERITROCITOS DE Lepidochelys olivácea (Cheloniidae) EN COLOMBIA
Provedor de dados: 37
Autores: QUIROZ HERRERA,Victor Hugo; PALACIO BAENA,Jaime.
RESUMEN Esta investigación se realizó en el municipio de Bahía Solano, Colombia y tuvo como objetivos: 1) detectar la circulación de eritrocitos con lesiones nucleares en 55 hembras adultas de tortuga golfina (Lepidochelys olivácea), empleando la inmunotinción de naranja de acridina y 2) correlacionar sus frecuencias con aspectos biométricos y fisiológicos. Se determinó una frecuencia de eritrocitos con micronúcleos (EMN) de 0,6 ± 0,6 y de protuberancias nucleares (EPN) de 2,1 ± 1,9. Mediante un análisis multivariado a través de la correlación de Pearson y de Kruskal-Wallis (p&lt;0,05), no se encontró ninguna correlación positiva entre el nivel de frecuencia de EPN ni de EMN con los parámetros biométricos y fisiológicos evaluados. Se estableció una...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomonitoreo; Ecotoxicología; Genotoxicidad; Micronúcleos; Tortuga golfina.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300322

FIRST REPORT OF Chalepus dorni (Coleóptera: Chrysomelidae: Cassidinae) IN MAIZE CROPS OF MINAS GERAIS, BRAZIL
Provedor de dados: 37
Autores: MARUCCI,Rosangela Cristina; Guimarães MOREIRA,Silvino; MENDES,Simone Martins.
ABSTRACT Chalepus dorni larvae were observed in commercial maize crops in the central region of the state of Minas Gerais, Brazil, during 20062007, 2008-2009 and 2010-2011 harvests. Early symptom of attack was characterized first by mines in the lower leaves of maize plants and later by the formation of necrotic areas. Although, there are reports of genus Chalepus in maize, this is the first record on the presence of C. dorni in maize in Minas Gerais, Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf-mining beetle; Necrotic leaf; Zea mays.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200015

COMUNIDADES DE MACRÓFITAS EN RÍOS ANDINOS: COMPOSICIÓN Y RELACIÓN CON FACTORES AMBIENTALES
Provedor de dados: 37
Autores: GÓMEZ RODRÍGUEZ,Alida Marcela; VALDERRAMA VALDERRAMA,Luz Teresa; RIVERA-RONDÓN,Carlos A.
RESUMEN Los pequeños ríos de los Andes tropicales se han estudiado escasamente y poco se conoce sobre la composición, diversidad y estructura de sus comunidades de macrófitas. En esta investigación se estudiaron las comunidades de plantas acuáticas de 18 pequeños ríos andinos pertenecientes a las cuencas de los ríos La Vieja (Quindío) y Otún (Risaralda) en la ecorregión cafetera colombiana, una de las más afectadas por actividades antrópicas en el país. Se buscó evaluar el efecto del uso del suelo sobre la estructura de las comunidades de macrófitas. Para ello se seleccionaron ríos que nacen y discurren exclusivamente en cada uno de los usos del suelo dominantes en cada cuenca. El muestreo se realizó en dos épocas climáticas distintas del año 2006. La...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colombia; Plantas acuáticas; Ríos de montaña; Ríos tropicales; Usos del suelo.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100005

EVALUACIÓN DE ANTICUERPOS ANTI-Trichinella spiralis OBTENIDOS POR INMUNIZACIONES SUBLINGUALES Y CONVENCIONALES CON LA PROTEÍNA 45kDa
Provedor de dados: 37
Autores: CHÁVEZ RUVALCABA,Francisca; CHÁVEZ RUVALCABA,María Isabel; HERNÁNDEZ LUNA,Carlos Eduardo; MUÑOZ ESCOBEDO,José Jesús; MUÑOZ CARRILLO,José Luis; MORENO GARCÍA,María Alejandra.
RESUMEN La trichinellosis es una enfermedad parasitaria zoonótica y cosmopolita, se debe al consumo de carne deficientemente cocida, principalmente proveniente del cerdo, diversos estudios avalan la eficacia de la administración de inmunoterapia. Se ha caracterizado un antígeno inmunodominante de 45 kDa y se plantea como objetivo evaluar la presencia de anticuerpos IgA, IgM e IgG antti-Trichinella spiralis a lo largo de la infección, así como el comportamiento en la administración de la inmunización de 45 kDa de Trichinella spiralis (T. spiralis) administrado por vía sublingual y vía parenteral. Se utilizaron 36 murinos (Long Evans), seis para la infección y purificación del antígeno de 45 kDa, 30 para formar los grupos de trabajo, control sano (cinco...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diagnóstico; Inmunología; Parasitología.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000200003

SEX EXPRESSION, BREEDING SYSTEM AND POLLINATORS OF Piper caldense (PIPERACEAE) IN THE BRAZILIAN ATLANTIC FOREST
Provedor de dados: 37
Autores: VARGAS-ROJAS,Diana Lucia; VIEIRA,Milene Faria.
ABSTRACT Neotropical Piper species have bisexual flowers. Such reproductive trait is considered basal in this pantropical genus. However, neotropical species having unisexual (staminate) flowers along with bisexual ones have also been reported. Dichogamy is common in the genus, associated with either self-compatibility or -incompatibility, as well as with entomophily. We analyzed a natural population of Piper caldense in a Atlantic Forest area (Viçosa municipality, Minas Gerais state, southeastern Brazil). Preliminary observations indicated that the species produces two flower types. We analyzed flower sex in spikes of 50 plants. We obtained additional information through morphological and anatomical studies and scanning electron microscopy analyses. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Andromonoecy; Entomophily; Incomplete protogyny; Self-incompatibility; Social bees.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300370

AISLAMIENTO DE MICROORGANISMOS ELECTROGÉNICOS CON POTENCIAL PARA REDUCIR CROMO HEXAVALENTE
Provedor de dados: 37
Autores: MORA COLLAZOS,Alexander; BRAVO MONTAÑO,Enrique.
RESUMEN Se realizó el aislamiento de microorganismos cultivables a partir de la biopelícula formada sobre el ánodo de una celda de combustible microbiana puesta en operación durante 30 días; los microorganismos aislados fueron evaluados en su capacidad de producir energía en celdas de combustible microbianas y de reducir el cromo hexavalente, Cr (VI). Se aislaron cinco microorganismos, los cuales fueron caracterizados mediante análisis del gen del ARNr 16S, el cual ubicó a los microorganismos en cuatro géneros bacterianos: Exiguobacterium (CrMFC1), Acinetobacter (CrMFC2), Aeromonas (CrMFC3 y CrMFC5), y Serratia (CrMFC4). Todas las cepas aisladas mostraron actividad electrogénica y capacidad para reducir cromo hexavalente; la cepa de Acinetobacter CrMFC2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ARNr 16S; Biorremediación; Celda de combustible microbiana; Reducción de cromo.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100003

DIVERSIDAD BACTERIANA ASOCIADA A BIOPELÍCULAS ANÓDICAS EN CELDAS DE COMBUSTIBLE MICROBIANAS ALIMENTADAS CON AGUAS RESIDUALES
Provedor de dados: 37
Autores: MORA COLLAZOS,Alexander; BRAVO MONTAÑO,Enrique.
RESUMEN. El presente trabajo evaluó la diversidad bacteriana asociada a las biopelículas formadas sobre los ánodos de celdas de combustible microbianas, por medio del análisis del gen del ARNr 16S y observaciones por microscopía electrónica de barrido. Se construyeron celdas de combustible microbianas de una cámara que permanecieron en operación durante 30 días utilizando muestras ambientales como inóculo y único sustrato energético; las celdas fueron monitoreadas en función de la producción de energía durante el desarrollo del experimento; al finalizar los ensayos, se realizó la caracterización molecular y observaciones mediante microscopía electrónica de barrido a las biopelículas formadas. Se reportan valores de densidad de potencia máxima de 4,85 mW/m²...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aguas residuales; ARNr 16S; Celdas de combustible microbianas; Diversidad bacteriana; Generación de energía; Microscopia electrónica de barrido.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100008

Chlamydia psittaci EN AVES PSITACIDAS EN DOS PARQUES ZOOLÓGICOS DE VENEZUELA
Provedor de dados: 37
Autores: RODRÍGUEZ-LEO,Carlos; HERNÁNDEZ,Vianellys; ABOU ORM,Sandra; DÍAZ,Yender; CAMACHO,Daria; ARRAIZ,Nailet; USECHE,Elianee.
RESUMEN La determinación de Chlamydia psittaci (Cp) en aves psitácidas en parques zoológicos de Venezuela representa una estrategia de conservación y preservación para este grupo de aves, donde múltiples especies se encuentran amenazadas de extinción y otras han perdido su capacidad de reincorporación a su hábitat natural. A través de la reacción en cadena de la polimerasa anidada (PCR) fue amplificada la subunidad 16S del ADNr de Cp en 50 muestras de hisopado cloacal de aves psitácidas, reportando una frecuencia de 62 %. El trabajo fue realizado en el Parque Zoológico Las Delicias (PZD) 8 % y el Aquarium de Valencia (AV) 54 %. La elevada frecuencia fue asociada a un genotipo de baja concentración y virulencia debido a la ausencia de signos clínicos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlamydia psittaci; Psitácidas; PCR.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300394

META-ANALYSIS OF THE HISTORY OF THE STUDY OF THE FRESHWATER TURTLE AND TORTOISE FAUNA OF COLOMBIA
Provedor de dados: 37
Autores: BOCK,Brian C; PÁEZ,Vivian P.
ABSTRACT The citations contained in a recent literature review on the freshwater turtle and tortoise species of Colombia were analyzed. Publishing rates on these species have been increasing exponentially since the 1950s, although many of the publications would not be detected using internet-based literature searches. The most common topics of publications were systematics and phylogeography, nesting ecology, and management. In the 1970s and 1980s, the rate of publishing on the ecology and genetics of Colombian populations lagged behind the rate of publishing on these topics for populations of Colombian freshwater turtle and tortoise species located in other countries, but currently the production of the two regions is comparable. Also, in other countries...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Knowledge; Literature; Meta-analysis; Publications; Testudines.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100007

Enterococcus, Myroides Y Exiguobacterium: GÉNEROS BACTERIANOS CON POTENCIAL PROBIÓTICO PARA EL CULTIVO DE TILAPIA NILÓTICA (Oreochromis niloticus)
Provedor de dados: 37
Autores: VILLAMIL DÍAZ,Luisa Marcela; ESGUERRA RODRÍGUEZ,Daniel.
RESUMEN Se aislaron 120 morfotipos bacterianos de intestino de tilapia y se seleccionaron según su actividad antibacteriana contra patógenos como Aeromonas hydrophila, Streptococcus agalactiae y Edwardsiella tarda, su capacidad de adherencia a mucus intestinal y cinética de crecimiento. Las bacterias seleccionadas se identificaron mediante secuenciación de 16S rRNA y se identificaron como Exigobacterium sp. l9, Enterococcus faecalis I15 y Myroides odoratimimus l19. Además, se evaluó su efecto in vivo sobre el crecimiento de los peces, mediante su adición al alimento de juveniles de Oreochromis niloticus (106 UFC / g, por 15 días). Se determinó la supervivencia luego de un desafío experimental con Edwardsiella tarda por inyección intraperitoneal (100 µL 105...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Edwardsiella tarda; Enfermedad de peces; Piscicultura; Promotor de crecimiento.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300331

SECUENCIACIÓN DEL GENOMA COMPLETO DEL Potato yellow vein virus (PYVV) EN TOMATE (Solanum lycopersicum) EN COLOMBIA
Provedor de dados: 37
Autores: MUÑOZ BAENA,Laura; GUTIÉRREZ SÁNCHEZ,Pablo Andrés; MARÍN MONTOYA,Mauricio.
RESUMEN Potato yellow vein virus (PYVV), es uno de los fitopatógenos más limitantes para la producción de papa en la región de Los Andes. A pesar que se le ha detectado infectando tomate en Colombia, el conocimiento de las características biológicas de las cepas presentes en este hospedante es muy limitado. En este estudio, utilizando secuenciación masiva de nueva generación (NGS), se obtuvo la secuencia completa de los tres segmentos genómicos del PYVV en plantas de tomate en Marinilla (Antioquia) y se evalúo la utilidad de tres juegos de cebadores para su detección mediante pruebas de RT-PCR convencional y en tiempo real (RT-qPCR). El genoma de la secuencia consenso presentó tamaños de 8043 nt (ARN1), 5346 nt (ARN2) y 3896 nt (ARN3) y se identificaron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crinivirus; RT-PCR; RT-qPCR; Secuenciación de nucleótidos de alto rendimiento; Solanaceae.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100001

TOXICIDAD AGUDA DEL INSECTICIDA CIPERMETRINA (CYPERMON ® 20 EC) EN CUATRO ESPECIES DE ANUROS COLOMBIANOS
Provedor de dados: 37
Autores: TRIANA VELASQUEZ,Teófila María; HENAO MUÑOZ,Liliana Marcela; BERNAL BAUTISTA,Manuel Hernando.
RESUMEN El insecticida cipermetrina (CY) es usado en la agricultura para el control de plagas; sin embargo, por su acción neurotóxica puede afectar organismos no blanco como los anuros. El objetivo del trabajo fue determinar la toxicidad (concentración letal media: CL50, y algunos efectos subletales: retrasos en el desarrollo, capacidad de natación y longitud total de las larvas) del insecticida CY (Cypermon® 20EC) expuesto durante 96 horas en embriones y renacuajos de cuatro especies de anuros bajo pruebas de laboratorio y microcosmos. Los embriones de Rhinella humboldti fueron los más sensibles en condiciones de laboratorio (CL50= 6,27 mg/L) y Boana xerophylla en microcosmos (CL50= 88,32 mg/ha), mientras que los de Engystomops pustulosus fueron los más...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anfibios; CL50; Efectos subletales; Piretroide.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000300340

ESTABLECIMIENTO DE UN SISTEMA DE SELECCIÓN IN VITRO DE VARIEDADES VENEZOLANAS DE ARROZ (Oryza sativa L.) RESISTENTES AL HONGO Pyricularia grisea
Provedor de dados: 37
Autores: FERNÁNDEZ DA SILVA,Rafael; RAMÍREZ,Pedro; SILVA,Jorge; STORACI,Vincenzo; CUAMO,Liaska; DE GUGLIELMO,Zoraya; SMITS,Gunta.
RESUMEN. El arroz, luego del trigo, es el cereal más importante del mundo, sin embargo, es susceptible al ataque de numerosos patógenos, siendo Pyricularia grisea, el más dañino. Este trabajo estableció un sistema de selección in vitro de variedades venezolanas a P. grisea, optimizando el sistema de regeneración por embriogénesis somática (inducción, regeneración y estrés por desecación), sometiendo el callo embriogénico (E) a presión de selección del filtrado crudo "FC" a través de cambios a la misma concentración "MC" o por incrementos progresivos en la concentración "IPC", obteniendo plantas tolerantes al fitopatógeno. El máximo porcentaje de inducción de callo embriogénico oscilo entre 30-65 %, en las cuatro variedades (Araure-4 y Venezuela 21: 1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embriogénesis somática; Estrés hídrico por desecación; Presión de selección de filtrado crudo in vitro.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100009

Dilución isotópica con deuterio para determinar ingesta de leche humana y composición corporal materna
Provedor de dados: 38
Autores: Vidueiros,Silvina Mariela; Nápoli,Cristián; Possidoni,Cristina; Tarducci,Gabriel; Giordanengo,Sergio; Fernandez,Inés; Pallaro,Anabel.
El objetivo del trabajo fue describir la aplicación de la técnica de dilución isotópica con deuterio de dosis a la madre para determinar la ingesta de leche materna y la composición corporal de las madres, en distintos tipos de lactancia. El método analítico se aplicó en cuatro casos modelo de pares madre-lactante en los cuales las madres recibieron una dosis oral de agua deuterada, recolectándose 6 muestras de saliva de ambos durante 15 días. El enriquecimiento de deuterio se determinó en un espectrómetro FTIR-Shimadzu-Affinity obteniéndose la ingesta de leche materna (ILM) y de agua de otras fuentes (Fd). Se observó una variación del enriquecimiento de deuterio en la saliva del lactante, asociada al tipo de lactancia recibida, siendo mayor en el caso de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dilución isotópica con deuterio; Ingesta de leche materna; Composición corporal.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200011

Zinc, cobre y vitaminas C, E y A en púberes con exceso de peso y resistencia a la insulina
Provedor de dados: 38
Autores: Acosta García,Edgar; Carías,Diamela; Páez Valery,María; Naddaf,Gloria; Domínguez,Zury.
Las vitaminas (Vit.) C, E y A, junto al zinc (Zn++) y cobre (Cu++) colaboran en la prevención de las comorbilidades asociadas a la obesidad. El objetivo del trabajo fue evaluar las concentraciones séricas (Cs) de Vit. C, E y A, así como las del Zn++ y Cu++ en púberes con exceso de peso (EP) y resistencia a la insulina (RI). El estudio fue descriptivo, correlacional, de campo y transversal. Las variables se compararon entre los púberes normopeso (NP)/sin RI y quienes tenían EP (con y sin RI). Se emplearon las pruebas de Pearson y Spearman, test de Student, U de Mann-Whitney, Kruskal-Wallis y el estadístico Z. Los adolescentes con EP/RI presentaron Cs de Zn++ menores que aquellos con EP/sin RI, y que el grupo control (p=0,010), siendo probablemente la RI lo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitaminas antioxidantes; Zinc; Cobre; Exceso de peso; Resistencia a la insulina; Adolescentes.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200005

Fundación Bioquímica Argentina Programa De Educación Continua (PROECO) Ciclo lectivo 2017 PROECO Presencial
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100021

Comentarios bibliográficos
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/review
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400018

Estimación del intervalo de referencia para C3 y C4 en población adulta de un hospital del Gran Buenos Aires
Provedor de dados: 38
Autores: Bovone,Nora Silvia; Gastiazoro,Ana María; Fuente,María Cristina.
El objetivo del presente trabajo fue la estimación del intervalo de referencia para los componentes del complemento C3 y C4 en población adulta hospitalaria. Se siguieron los lineamientos de la guía C28A3 de CLSI para lo cual se eligió como población de referencia a dadores de sangre concurrentes al Servicio de Hemoterapia del hospital que superaron el interrogatorio médico y accedieron a la extracción. Fue seleccionada una muestra de 251 dadores constituida por 72,9% de mujeres, de edad promedio 36,5±10 años y 27,1% de hombres, de edad promedio 40,6±11,5 años. Esta composición estuvo balanceada por sexo y edad promedio a la población de pacientes que asisten al laboratorio, en su mayoría con diagnóstico presuntivo de enfermedades autoinmunes. Los analitos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Componente C3 del complemento; Componente C4 del complemento; Intervalo de referencia; Población adulta hospitalaria.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200002

Bases moleculares de hemoglobinopatías en Argentina
Provedor de dados: 38
Autores: Scheps,Karen Gabriela; Varela,Viviana.
Durante el desarrollo de un individuo se expresan distintas cadenas de globina de tipo a y no-a, que se combinan en tetrámeros para formar hemoglobina. Los genes que las codifican se organizan en familias. Distintas mutaciones afectan los genes que codifican las cadenas de globina: si provocan alteraciones cualitativas originan cuadros de hemoglobinopatías estructurales, si disminuyen las síntesis de las cadenas de globina, talasemias, y si tienen ambos efectos, hemoglobinopatías talasémicas. El propósito de este trabajo es presentar las bases moleculares de las hemoglobinopatías en Argentina, en un total de 862 muestras, en base a los estudios moleculares realizados en este laboratorio a partir del estudio de 910 muestras de pacientes. En nuestro medio,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemoglobina; Variantes estructurales; SS-talasemia; A-talasemia; Genética.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300008

Determinación de hierro sérico: Evolución del desempeño de los laboratorios participantes del Sub-Programa PEEC-Hematología
Provedor de dados: 38
Autores: Flagel,María Soledad; Tau,Lorena; Ventimiglia,Fernando Daniel; Fink,Nilda Ester.
El objetivo de este trabajo fue determinar la evolución del desempeño analítico en la determinación de hierro sérico, de los laboratorios participantes del Sub- Programa PEEC-Hematología (PEEC-H) del Programa de Evaluación Externa de Calidad Prof. Dr. Daniel Mazziotta de la Fundación Bioquímica Argentina, mediante el análisis de los resultados de ferremia en 6 encuestas (E) realizadas en los meses de julio entre los años 2010 y 2015 (E 77, 81, 85, 89, 93 y 97). Hasta el 2011 se utilizaban métodos con y sin desproteinización, siendo estos últimos los más utilizados (94%). En 2015 en la red de laboratorios se emplearon solamente métodos directos sin desproteinización, siendo los colorimétricos los más utilizados (aproximadamente 95%). El Desvío Relativo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Programa de Evaluación Externa de la Calidad Prof. Dr. Daniel Mazziotta de la Fundación Bioquímica Argentina; Ferremia; Control de calidad; Desvío relativo porcentual aceptable; Ferene; Ferrozina; Cromógenos; Anemias microcíticas.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300014

Prohepcidina y estado del hierro e inflamación en escolares sanos o H. pylori positivos asintomáticos
Provedor de dados: 38
Autores: Páez-Valery,María Concepción; Naddaf,Gloria; Barrado,Domingo; Cioccia,Anna María; Hevia,Patricio.
El eje hepcidina-ferroportina es determinante en la homeostasis del hierro. Niveles elevados de hepcidina reducen la capacidad de absorción intestinal del hierro, así como su movilización entre tejidos. Una condición que produce valores séricos elevados de hepcidina es la infección. Como la infección con Helicobacter pylori (Hp) predispone a una deficiencia de hierro, en este estudio se evaluaron los niveles séricos de Pro-Hepcidina (PH), un precursor de la hepcidina, en un grupo de escolares asintomáticos, infectados con Hp (80 niños) y se los comparó con un grupo similar de niños sanos (59 niños). Los resultados mostraron que los niños infectados en los que se detectó la presencia de Hp (test de aire espirado) tenían valores de proteína C reactiva (PCR)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepcidina; Prohepcidina; Helicobacter pylori; Escolares; Inflamación; Homeostasis del hierro; Anemia; Deficiencia de hierro.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200003

Complejos inmunes IgM-ApoB100 modificadas
Provedor de dados: 38
Autores: Barbero,Julieta Guillermina; Nicolás,Juan Carlos.
La aterosclerosis es la patología vascular de mayor prevalencia, lo cual motiva numerosas investigaciones sobre su fisiopatogenia. Las lipoproteínas pueden ser modificadas por mecanismos de oxidación y acetilación entre otros, a nivel de sus componentes lipídicos como proteicos, tornándose aterogénicas. Las Apolipoproteínas B100 modificadas (ApoB100m), desempeñan un rol activo en el desarrollo de las lesiones ateroscleróticas conjuntamente con otros factores de riesgo. Éstas tienen la capacidad de producir respuesta inmune llevando a la producción de anticuerpos y la subsecuente formación de complejos inmunes. La importancia de los anticuerpos contra las ApoB100m en la aterogénesis todavía no está clara, existiendo datos contradictorios respecto a si su...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Complejos inmunes; Inmunoglobulina M; ApoB100; Aterosclerosis.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100011

Técnicas convencionales aplicadas al diagnóstico de las hemoglobinopatías
Provedor de dados: 38
Autores: Erramouspe,Beatriz; Eandi Eberle,Silvia Judith.
Las hemoglobinopatías son trastornos hereditarios debidos a una gran variedad de defectos que afectan a los genes de globina. El diagnóstico de las hemoglobinopatías resulta de una combinación de estudios clínicos, pruebas de laboratorio y estudio familiar. Las herramientas básicas incluyen hemograma, hemoglobina e índices eritrocitarios (VCM, HCM), morfología de los eritrocitos, recuento de reticulocitos y perfil de hierro. Las determinaciones complementarias son electroforesis de hemoglobina que permite separar las diferentes variantes de acuerdo con su carga eléctrica, cuantificación de hemoglobina A2 (HbA2), Fetal (Hb F), pruebas de solubilidad hemoglobínica y falciformación. Otras técnicas se basan en propiedades fisicoquímicas como la estabilidad de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemoglobinopatías; Variantes estructurales; Hemoglobina A2; Hemoglobina S; Talasemia.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300007

Troponinas de alta sensibilidad T vs I en Sindrome Coronario Agudo: Predicción de lesiones coronarias significativas y pronóstico a largo plazo
Provedor de dados: 38
Autores: Kvisvik,Brede; Mørkrid,Lars; Røsjø,Helge; Cvancarova,Milada; Rowe,Alexander D; Eek,Christian; Bendz,Bjørn; Edvardsen,Thor; Gravning,Jørgen.
Antecedentes: Los ensayos de troponinas cardíacas de alta sensibilidad (hs-cTn) tanto T e I son una herramienta crucial y bien establecida para el diagnóstico de infarto agudo de miocardio (IAM), ya que se ha demostrado ampliamente su superioridad respecto a las antiguas determinaciones de troponina. Sin embargo, eventuales diferencias entre ambos ensayos en la predicción de lesiones coronarias significativas y el pronóstico a largo plazo en pacientes con síndrome coronario agudo (SCA) no han sido aclarados completamente. Métodos: Se evaluaron las concentraciones séricas de hs-cTnT (Roche), hs-cTnI (Abbott) y porción amino-terminal del pro-péptido natriurético tipo B (NT-proBNP) (Roche) en 390 pacientes con SCA sin elevación del segmento ST, y se...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300015

Interacción de la glucosa con espesantes utilizados en el control de la disfagia orofaríngea
Provedor de dados: 38
Autores: García González,María Luisa; García Raurich,Josep; Raventós Santamaría,Mercè; Moros,Silvia Marceló.
La disfagia se define como un trastorno de la deglución caracterizado por una dificultad en la preparación oral del bolo alimenticio o en el desplazamiento del alimento desde la boca hasta al estómago. Se asocia con la cuarta causa de muerte más frecuente en adultos mayores y se identifica como un agente contribuyente a la malnutrición. Los alimentos destinados a las personas que padecen disfagia son preparados con productos que modifican la viscosidad de forma que al ser ingeridos puedan ser más seguros. En el presente trabajo se pretende establecer la interacción entre la glucosa y tres espesantes comerciales de origen vegetal (dos a base de almidón y un tercero constituido por una mezcla de maltdextrina, goma xantana y goma guar) a efectos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disfagia; Espesante; Viscosidad; Almidón; Goma; Glucosa.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400010

Dra. Nilda Ester Fink: Profesor Extraordinario Consulto
Provedor de dados: 38
Autores: Castagnino,Juan Miguel.
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300002

Prevalencia de las parasitosis intestinales en el Hospital de Enfermedades Infecciosas &amp;#8220;Dr. Francisco Javier Muñiz&amp;#8221;
Provedor de dados: 38
Autores: Astudillo,Osvaldo Germán; Bava,Amadeo Javier.
Se evaluaron en forma retrospectiva los resultados obtenidos del procesamiento de muestras fecales y escobillados anales, remitidos para su estudio al laboratorio de la Sección Parasitología del Hospital de Enfermedades Infecciosas &amp;#8220;Dr. Francisco Javier Muñiz&amp;#8221; de la Ciudad de Buenos Aires, durante el período comprendido entre enero y diciembre de 2016. Se tuvieron en cuenta los resultados de 1253 estudios parasitológicos de materia fecal y de 268 escobillados anales, correspondientes a 1207 pacientes. No fueron considerados los resultados de las muestras de 432 pacientes, de los cuales no se poseía alguno de los datos evaluados. Las muestras fecales resultaron positivas en 288 (22,98%) casos, mientras que en 33 (12,31%) escobillados...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enteroparásitos; Prevalencia; Estudio parasitológico.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400015

Anemia en el adulto mayor
Provedor de dados: 38
Autores: Musso,Arturo Mario.
En personas de edad avanzada (&gt;65 años) la anemia es un factor de riesgo independiente en relación con morbimortalidad. Actualmente se considera que 12 g/dL de hemoglobina es el límite inferior normal en varones y mujeres que viven a nivel del mar. La prevalencia de anemia en estas personas varía entre 11 y 60%, y aumenta con la edad. Aproximadamente un tercio de la población presenta anemia de causa nutricional (hierro, folato, vitamina B12), otro tercio tiene anemia de la inflamación o por enfermedad renal crónica, y el tercio restante presenta &amp;#8220;anemia inexplicada&amp;#8221;. La patofisiología de la &amp;#8220;anemia inexplicada&amp;#8221; es objeto de investigación y se comentan algunos mecanismos propuestos. En la edad avanzada la anemia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anemia; Pacientes mayores; Diagnóstico y tratamiento.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300006

Transaminasas séricas y síndrome metabólico en adultos mayores de 65 años de la sierra ecuatoriana
Provedor de dados: 38
Autores: Encalada-Torres,Lorena; Macero,Rein; Tenecela,Edgar; Toledo,Carolina; Wong,Sara.
El objetivo del trabajo consistió en determinar la relación entre las transaminasas séricas y los componentes del Síndrome Metabólico (SM) en una población adulta mayor de 65 años de la sierra ecuatoriana. La misma estuvo formada por 387 adultos mayores de Cuenca-Ecuador. El diagnóstico de SM se realizó mediante los criterios del ATPIII-2005. Para la cuantificación de las transaminasas, alanina aminotransferasa (ALT) y aspartato aminotransferasa (AST) se usó el espectrofotómetro Génesis 20 con el reactivo de Wiener lab. Se compararon los grupos con y sin SM mediante el test t de Student. La correlación de Pearson se usó para medir la asociación entre los componentes del SM y de las transaminasas. La prevalencia del SM fue de 57,4% y de transaminasas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transaminasas séricas; Alanina aminotransferasa; Aspartato aminotransferasa; Adulto mayor; Síndrome metabólico.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400005

Esferocitosis hereditaria: experiencia clínica y diagnóstica en Argentina
Provedor de dados: 38
Autores: Crisp,Renée Leonor; García,Eliana; Solari,Liliana; Rapetti,María Cristina; Nesse,Alcira; Donato,Hugo.
Los objetivos del presente estudio fueron: a) Analizar las características demográficas y clínicas de nuestra población al diagnóstico; b) Evaluar si las pruebas más recientes presentan ventajas sobre las tradicionales; c) Confirmar la frecuencia de las distintas deficiencias de proteínas de membrana; d) Establecer la relación entre severidad y resultado de las pruebas o tipo de deficiencia. Se analizaron 359 individuos estudiados desde 2007, cuando se incorporaron criohemólisis hipertónica (CH), citometría de flujo con eosina-5'- maleimida (5'EMA-CF), FOE por citometría de flujo (FOE-CF) y electroforesis de proteínas de membrana (SDS-PAGE) al estudio de laboratorio clásico, fragilidad osmótica eritrocitaria (FOE) y autohemólisis (AH). Criterios...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Esferocitosis hereditaria; Anemia hemolítica; Membrana eritrocitaria; Criohemólisis hipertónica; Eosina-5'-maleimida; Fragilidad osmótica; Citometría de flujo; Anemia neonatal; Sangre capilar; Anemia.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300005

Excreción urinaria de iodo y sal en población de Buenos Aires, Argentina
Provedor de dados: 38
Autores: Muñecas,Pablo; Malaret,María Laura; Galdi,Mónica.
El iodo es un micronutriente esencial escaso en la dieta. Su deficiencia se asocia con bocio y deterioro cognitivo, entre otras manifestaciones. Desde 1967, la sal de mesa es enriquecida en 33 &amp;#956;g de iodo/g de sal. Recientemente, bajo la propuesta &amp;#8220;Menos sal, más vida&amp;#8221; se ha legislado para reducir la ingesta de los habituales 10-12 g a 5 g de sal por día. Resulta de interés determinar si la ingesta de sal y la de iodo han disminuido y si están relacionadas. Se evaluó la ingesta reciente de iodo y de sal a través de su excreción urinaria (Reacción de Sandel-Kolthoff y de Mohr, respectivamente), en 514 muestras de orina, agrupadas por sexo y grupo etáreo (&lt;20 años, 20-30 años, 30-60 años y &amp;gt;60 años). Se emplearon los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deficiencia de yodo; Hipotiroidismo; Ingesta de sal; Hipertensión.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400006

Prevalencia de anticuerpos antifosfolípidos y anti anexina V en pacientes dializados de Bahía Blanca
Provedor de dados: 38
Autores: Tentoni,Juan; Larregina,Andrea Elena; Bermúdez,Paula Mariela; Larregina,Norma Alejandra; Polini,Nélida Nora.
En los pacientes hemodializados son frecuentes las oclusiones de los accesos vasculares por una diálisis insuficiente y en un bajo porcentaje por un estado hipercoagulable desencadenado por anticuerpos dirigidos contra determinados componentes fosfolipídicos. El objetivo del trabajo fue evaluar la prevalencia de estos autoanticuerpos (APL) y del marcador anti anexina V en 79 pacientes en plan de hemodiálisis y en 66 donantes de sangre de la ciudad de Bahía Blanca. Para la detección del anticoagulante lúpico (AL) se realizaron estudios coagulométricos básicos, pruebas de detección, corrección con mezclas con plasma normal y ensayos confirmatorios con lisados plaquetarios. En paralelo, se efectuaron ensayos inmunológicos séricos: anticuerpos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diálisis; Anticuerpos antifosfolípidos; Anti anexina V.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400012

La bioquímica del futuro y su proyección hacia nuevos horizontes: Congreso Nacional Bioquímico - CUBRA XIV
Provedor de dados: 38
Autores: Alegre,Jorge Ricardo.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400001

Necesidad de armonizar la etapa preanalítica de la orina de 24 horas: evidencias de una encuesta
Provedor de dados: 38
Autores: Unger,Gisela; Benozzi,Silvia Fabiana; Pennacchiotti,Graciela Laura.
El objetivo del trabajo consistió en evaluar el estado de armonización de la etapa preanalítica de la orina de 24 horas (orina-24h). Se realizó una encuesta anónima sobre la etapa preanalítica de la orina-24h a bioquímicos de Argentina. Respondieron 92 profesionales. Del análisis de las respuestas surge que el 95% de los bioquímicos facilita a los pacientes instrucciones escritas para la recolección; 11% incluye instrucciones con información visual gráfica además de escrita; 37% registra hora de inicio y finalización de la recolección; 59% recomienda que durante la misma la muestra se mantenga refrigerada; 73% suministra al paciente el recipiente para la recolección; 47% proporciona el envase con conservante, si corresponde; 100% solicita al paciente...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orina de 24 horas; Etapa preanalítica; Armonización.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400007

Biomateriales, aspectos éticos y marco regulatorio
Provedor de dados: 38
Autores: Castagnino,Juan Miguel.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200001

Cuantificación de trazas de soja con kits de ELISA en galletitas y productos extrudidos
Provedor de dados: 38
Autores: Binaghi,Maria Julieta; Greco,Carola Beatriz; Martín,María Eugenia; Drago,Silvina Rosa; Ronayne de Ferrer,Patricia Ana; López,Laura Beatriz.
Se evaluó la detección de trazas de soja en sistemas modelo (SM) de galletitas y extrudidos que contenían 5000, 250, 100, 50, 25, 10, 5 y 0 ppm de concentrado de proteína de soja (CPS). Se analizaron, además, dos lotes diferentes de ocho clases de galletitas comerciales y dos tipos de extrudidos que declaraban la presencia de soja a través de la frase &amp;#8220;Contiene ...&amp;#8221; o a través de frases de advertencia. La determinación de proteínas de soja se realizó utilizando tres kits ELISA (R-Biopharm, Neogen-Veratox y Romer). Solo el kit de R-Biopharm permitió la cuantificación de soja a partir de 25 ppm de CPS en galletitas y a partir de 5 ppm de CPS en productos extrudidos. Los otros dos kits resultaron menos sensibles. De acuerdo con los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alergenos; Soja; Galletitas; Productos extrudidos; ELISA.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400011

Benefits of fiber and antioxidant power of rice bran in Vitamin E deficient rats
Provedor de dados: 38
Autores: Aguilar-García,Carlos; Cioccia,Anna María; Gavino,Victor; Gutiérrez,Marlén; Hevia,Patricio.
Dietary fiber requirements are met by only a small fraction of the population. There is need for supplemented foods to fill this gap. Rice bran (RB) is high in fiber and has antioxidant properties. The effects of rice bran fiber on several metabolic indicators and the antioxidant capacity of rice bran in rats was reported. Rats were divided into 4 dietary groups: Vitamin E-sufficient with (+VitE/RB+) or without (+VitE/RB-) rice bran; Vitamin E-deficient with (-VitE/RB+) or without (-VitE/RB-) rice bran. Food intake, growth and feed efficiency were similar in all groups but wet and dry fecal mass of the RB+ groups were 3 times higher than the RB- groups. Blood hemoglobin and liver iron were also similar among all groups. However, the liver VitE...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice bran; Laxation; Antioxidant; Rat liver Vitamin E; Erythrocyte catalase and glutathione reductase; Dietary fiber gap.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100013

Valor diagnóstico de la morfología eritrocitaria en las anemias
Provedor de dados: 38
Autores: Ventimiglia,Fernando Daniel; Rivas-Ibargüen,María Alejandra; Vildoza,Analía; Orsilles,Miguel Ángel.
A pesar de la disponibilidad de modernos equipos automatizados, el estudio de la morfología eritrocitaria en extendidos de sangre periférica continúa desempeñando un rol fundamental en el diagnóstico de las anemias. En 2005, el Grupo Internacional de Consenso para la Revisión en Hematología publicó un documento con los criterios homogéneos de acción recomendados para la selección de los frotis sanguíneos que deben ser analizados mediante microscopía. Recientemente, el Comité Internacional de Estandarización en Hematología (ICSH) elaboró una serie de recomendaciones para unificar la nomenclatura y graduar los hallazgos morfológicos anormales en el estudio de la sangre periférica. El objetivo de este trabajo fue presentar a los lectores una revisión del tema...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morfología eritrocitaria; Glóbulos rojos; Frotis sanguíneo; Anemia.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300013

Colonización rectal por bacilos gram negativos multirresistentes: importancia de la detección precoz durante la hospitalización
Provedor de dados: 38
Autores: Santolin,Carolina; Sesma,Ana Claudia; Llansa,María Agustina; Pintado,Sandra; Gigela Masso,Marina; Mangiaterra,Sandra Mariela.
Las infecciones asociadas con el cuidado de la salud son consideradas un problema epidémico, controlable pero difícilmente erradicable. La detección precoz de pacientes colonizados por microorganismos multirresistentes, a través de cultivos de vigilancia epidemiológica y la implementación de medidas preventivas pueden reducir su incidencia. El objetivo del trabajo fue establecer los momentos adecuados durante la hospitalización para realizar estudios de colonización y decidir los microorganismos a estudiar según el lugar de procedencia del paciente. Se analizaron hisopados rectales de pacientes internados en la Unidad de Terapia Intensiva, obtenidos al ingreso, a las 72 h y al sexto día de internación. Se investigó Acinetobacter spp multirresistente (AMR),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigilancia epidemiológica; Hisopados rectales; Enterobacterias productoras de beta-lactamasas de espectro extendido; Enterobacterias productoras de KPC; Acinetobacter spp. multirresistente.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400014

Especificaciones de calidad en base a error total : ¿Cuál es la mejor elección?
Provedor de dados: 38
Autores: del Campillo,Sofía; de Elías,Rafael; Kiener,Gisel; Kiener,Oscar; Barzón,Silvia.
El objetivo del trabajo fue evaluar el desempeño anual de los métodos, en términos de error total (ET), las distintas especificaciones de calidad disponibles y el modelo Seis Sigma para calificar desempeño. Se evaluaron analitos con variabilidad biológica (VB), muy baja, baja, media y alta. Se calculó el ET (ETc) y el sigma (s) mensual a dos niveles de control; el ET permitido (ETp) para cada analito se obtuvo de 8 fuentes (metas biológicas y regulatorias). Se consideró desempeño aceptable cuando ETc&lt;ETp y s &amp;#8805;3. Se observó estabilidad analítica durante el período evaluado. No se llegaron a alcanzar las metas biológicas para analitos con muy baja VB; algo similar sucedió para analitos con VB baja y media; con VB alta se alcanzaron todas las...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Especificaciones de calidad; Error total; Desempeño analítico; Seis Sigma.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200008

Significado clínico de la determinación de Testosterona: Utilidad y problemas metodológicos
Provedor de dados: 38
Autores: Scaglia,Hugo Estanislao.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200012

Comparación del recuento celular entre un método manual y un contador automatizado en líquidos de derrame
Provedor de dados: 38
Autores: Angeleri,Anabela; Ariagno,Julia; Sardi,Melba; Carbia,Claudio; Palaoro,Luis; Rocher,Adriana.
El objetivo del trabajo consistió en comparar el recuento celular total en los líquidos de derrame de cavidades serosas entre el método automatizado empleado en hematología y el método manual en hemocitómetro. Se procesaron 107 muestras: 45 líquidos ascíticos (LA) y 62 líquidos pleurales (LP) a los que se les realizó el recuento celular en cámara de Neubauer y en contador hematológico Sysmex XT 1800i. Se obtuvieron los siguientes resultados: 1) Regresión lineal: los coeficientes de correlación indicaron una alta correlación entre ambos métodos (LA r2: 0,999; p&lt;0,0001 y LP r2: 0,997; p&lt;0,0001). 2) Bland-Altman: El análisis de las figuras muestra una excelente concordancia entre ambos métodos. El error sistemático fue 51 para los LA y 97 para los LP,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Derrames serosos; Recuento celular manual; Recuento automatizado; Líquido pleural; Líquido ascítico.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100007

Estudio de la interferencia por hemólisis en la determinación de bilirrubina total
Provedor de dados: 38
Autores: Eik,Luciana Carmen; Buscetti,María Guillermina; Di Camillo,Ignacio María; Medina,Yanina Soledad; Di Pinto,Paola; Minghetti,Erica; Obando,Daniela; Díaz Weiss,María Pía; Garri Zaccaria,Mara; Rocha,Daniela; Gutiérrez,Alejandra; Rementa,Ezequiel Hernán.
La hemólisis es una causa frecuente de rechazo de muestras que genera un sesgo negativo en la determinación de bilirrubina total (BT). Los objetivos de este trabajo fueron determinar el grado de hemólisis (GH) para reemplazar la inspección visual subjetiva, establecer la magnitud de su interferencia y conocer la concentración inicial de hemoglobina a partir de la cual se produce interferencia clínicamente relevante (ICR). Se recolectaron sueros con diferentes concentraciones de BT. Se preparó un hemolizado para generar distintas concentraciones de interferente. Se cuantificó la BT mediante el método de diclorofenildiazonio en los sueros con las diferentes concentraciones de hemoglobina y se determinó GH midiendo absorbancia a 578 nm. Se consideró ICR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bilirrubina; Interferencia; Hemólisis; Hemoglobina.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100004

Baja masa ósea, osteoporosis primaria y secundaria en mujeres premenopáusicas
Provedor de dados: 38
Autores: Bagur,Alicia.
Existe escasa información sobre baja masa ósea y osteoporosis en mujeres premenopáusicas. Solo el 2% de las mujeres jóvenes consulta para evaluar la presencia de osteoporosis. En el 50% de las mujeres premenopáusicas que presentan una disminución de su masa ósea se diagnostican enfermedades o medicaciones que la provocan. Las causas deben ser cuidadosamente investigadas para no emitir un diagnóstico apresurado de osteoporosis premenopáusica. Al diagnóstico de baja masa ósea se arriba luego de descartar las causas que ocasionan osteoporosis secundaria y su etiología se relaciona genéticamente con un bajo pico de masa ósea. El cuadro de osteoporosis primaria presenta una densidad mineral ósea (DMO) muy disminuida y fracturas óseas por fragilidad. La...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteoporosis premenopáusica; Baja masa ósea premenopáusica; Osteoporosis secundaria premenopáusica.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200007

Talasemias: Aspectos clínicos
Provedor de dados: 38
Autores: Chiappe,Gustavo.
Los síndromes talasémicos, junto con las hemoglobinopatías talasémicas, las hemoglobinopatías estructurales y los síndromes de sobreexpresión representan las diferentes formas clínicas de las hemoglobinopatías. Los defectos genéticos responsables de los síndromes talasémicos determinan la síntesis disminuída o nula de la cadena de globina correspondiente. Según la cadena cuya síntesis es defectuosa, los síndromes talasémicos se clasifican en a-talasemias, b-talasemias, etc. Según las diferentes combinaciones de fenotipos particulares, las a-talasemias se clasifican en silente, portador, enfermedad con hemoglobina H e hidropesía fetal, y las b-talasemias en menor, intermedia y mayor. La sospecha diagnóstica de los síndromes talasémicos leves y de las...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anemia; Talasemia; Hemoglobinopatía; Electroforesis de hemoglobina.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300003

Determinación de Levetiracetam en suero humano por cromatografía líquida con detección de arreglo de diodos
Provedor de dados: 38
Autores: Assum,Débora Magalí; Orozco,Maria Belén; Tantucci,Leonela Ana; Suárez,Héctor Andrés.
Se desarrolló y validó un nuevo método analítico para determinar Levetiracetam (LEV) en suero humano utilizando cromatografía líquida de alta resolución (HPLC) con detección de arreglo de diodos. El procedimiento es sencillo, puede ser incluido en la rutina del laboratorio y prestar servicio tanto en el monitoreo terapéutico como en la urgencia. El método incluye las siguientes etapas: extracción líquido-líquido con diclorometano y evaporación de la fase orgánica, la droga se reconstituye con fase móvil, se inyecta en el cromatógrafo y se detecta a 205 nm. El tiempo de retención de LEV es de 5 minutos y no presenta interferentes con respecto a otras drogas comúnmente prescriptas con Levetiracetam. La curva de trabajo presentó un rango de linealidad entre...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Levetiracetam; Anticonvulsivante; Cromatografía líquida de alta resolución; Método analítico; Validación.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100009

Beneficios de la fibra dietética y poder antioxidante del salvado de arroz en ratas deficientes en Vitamina E
Provedor de dados: 38
Autores: Aguilar-García,Carlos; Cioccia,Anna María; Gavino,Victor; Gutiérrez,Marlén; Hevia,Patricio.
Las recomendaciones de consumo de fibra no se cumplen y hay una necesidad por alimentos con fibra. El salvado de arroz (SA) tiene fibra y propiedades antioxidantes. Aquí se evaluaron estas propiedades en ratas suficientes (+) y deficientes (-) en Vitamina E (VitE) con o sin SA. Las ratas fueron divididas en cuatro grupos. Dos consumieron dietas +VitE y uno tenía SA. Los restantes consumieron dietas -VitE y uno tenía SA. El consumo de alimento, su eficiencia y el crecimiento, fueron similares entre los 4 grupos pero la masa fecal húmeda o seca fue 3 veces superior en los SA+. La hemoglobina en sangre y el hierro hepático fueron similares entre grupos, pero en los grupos (SA-) la VitE hepática fue 10 veces menor en las ratas -VitE que en las +VitE. Sin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salvado de arroz; Efecto laxante; Antioxidante; Vitamina E hepática en ratas; Catalasa y glutatión reductasa en eritrocitos; Deficiencia dietética de fibra.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100012

Búsqueda de biomarcadores a partir de péptidos expresados en biopsias de cáncer de mama
Provedor de dados: 38
Autores: Muza Briseño,Carlos; Haskins,William; Cazares Urbina,Guillermo; Rodríguez Herrera,Raúl; Zaehringer,Madeleine; Zugasti Cruz,Alejandro; Morlett Chávez,Jesús Antonio.
El cáncer de mama (CM) es una de las principales causas de muerte en México. Se ha observado un incremento en la incidencia de éste en mujeres de 15-29 años. A fin de comprender las causas en el desarrollo del CM, se pretendió buscar la asociación entre los genes/enfermedad empleando técnicas de Biología Molecular. Se analizaron, por genómica funcional, 50 biopsias frescas de pacientes con CM (BFCM), 50 biopsias embebidas en parafina de CM (BEPCM) y 10 biopsias frescas de pacientes con sospecha de CM (BFSC), obtenidas de mujeres que residen en Coahuila, México. Las muestras proteicas se cuantificaron y se resolvieron en geles de poliacrilamida dodecil sulfato de sodio (SDS-PAGE) y en dos dimensiones (2-DE). El perfil proteico de las BFCM, BEPCM versus BFSC...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cáncer de mama; Proteómica; Geles de poliacrilamida-dodecil sulfato de sodio; Cromatografía líquida acoplada a espectrometría de masas en tándem; Biomarcadores.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400008

Albuminuria: consideraciones preanalíticas y analíticas
Provedor de dados: 38
Autores: Fabiana Benozzi,Silvia; Pennacchiotti,Graciela Laura.
La albuminuria (AU) se define como el incremento subclínico y persistente de la excreción urinaria de albúmina. Los valores que definen esta condición son mayores a 30 mg AU/g creatininuria. La AU es un marcador de daño renal, de progresión de enfermedad renal y de riesgo cardiovascular. Este analito tiene una elevada variabilidad biológica y múltiples condiciones pueden afectar su determinación e invalidar la prueba: esto justifica la necesidad de obtener 2 de 3 muestras positivas en un período de 3 a 6 meses para confirmar la presencia de AU. La primera orina de la mañana es el espécimen más adecuado para la pesquisa de AU y su monitorización, expresando los resultados como la relación AU/creatininuria (RAC) (mg/mmol, mg/g). El valor de creatininuria en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Albuminuria; Relación albúmina/creatinina en orina; Enfermedad renal; Riesgo cardiovascular.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100008

Pruebas bioquímicas para el diagnóstico de anemia megaloblástica
Provedor de dados: 38
Autores: Merlo,Héctor Claudio; De Paula,Silvia Mónica.
Es intención de este trabajo hacer un breve repaso sobre el metabolismo de la Vitamina B12 y del Folato o Vitamina B9. Estas dos vitaminas hidrosolubles juegan un papel importante en el metabolismo celular. Son cofactores de reacciones metabólicas de transferencia de grupos monocarbonados, esenciales para el mantenimiento de la vida. Además se describen las nuevas determinaciones de laboratorio, se evalúan cuáles son los estudios necesarios para arribar a un correcto diagnóstico del paciente con Anemia Macrocítica (AM), su etiología y cómo muchas drogas de uso frecuente en medicina producen AM. Se realiza también la evaluación del conjunto de metodologías que se pueden efectuar como rutina en el laboratorio especializado en hematología y se propone un...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anemia megaloblástica; Deficiencia de vitamina B12; Deficiencia folato; Algoritmo de anemia macrocítica; Pruebas de laboratorio.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300010

Ecos del XXIII Congreso Latinoamericano de Bioquímica Clínica
Provedor de dados: 38
Autores: Queiruga,Graciela.
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400019

Vitamina D sérica y su relación con adiposidad y resistencia a la insulina en mujeres posmenopáusicas
Provedor de dados: 38
Autores: Moliné Lana,María Esther; Carías Picón,Diamela; Barrios Ospino,Yubire Beatriz.
La menopausia se asocia con un aumento del peso corporal y una redistribución de la grasa desde la región glúteo-femoral a la región abdominal. Recientemente se ha relacionado el exceso de peso y de tejido adiposo con hipovitaminosis D, que a su vez, se ha vinculado con la resistencia a la insulina. El objetivo de este estudio fue determinar los niveles de vitamina D sérica y establecer su relación con indicadores de adiposidad y resistencia a la insulina en mujeres posmenopáusicas normopeso, con sobrepeso u obesidad. Se llevó a cabo un estudio de tipo descriptivo-correlacional, de corte transversal y de campo. Participaron 84 mujeres con edad promedio de 56,29±5,64 años. Se midió el peso, la talla, la circunferencia de cintura (CC), la grasa corporal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mujeres posmenopáusicas; Vitamina D sérica; Sobrepeso; Obesidad; Resistencia a la insulina.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400003

72º Congreso Argentino de Bioquímica: Del 22 al 25 de Agosto de 2017 Hotel Panamericano Ciudad Autónoma de Buenos Aires
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100022

Mecanismo de exocitosis de gránulos citotóxicos: claves dadas a partir de la linfohistiocitosis hemofagocítica primaria
Provedor de dados: 38
Autores: Monge-Rodríguez,Silvia Leticia; Espinoza-Mora,María del Rosario.
La linfohistiocitosis hemofagocítica (HLH) es un síndrome clínico de hiperinflamación que se caracteriza por ser una respuesta inmune altamente estimulada pero inefectiva. En la HLH primaria se encuentran alterados el proceso de exocitosis de gránulos citotóxicos o los efectores que se encuentran en éstos, también existe afección de la activación de las células citotóxicas. Durante la exocitosis existe disfunción en la fase de transporte y maduración vesicular, en la regulación del proceso de docking y priming o en los complejos v-SNARE y t-SNARE. La conexión entre la célula citotóxica y célula diana se compromete si se afecta la proteína efectora perforina. SAP y XIAP se relacionan con la activación de las células inmunitarias. Aunque actualmente se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Linfohistiocitosis hemofagocítica; Exocitosis; Gránulos citotóxicos; Hemophagocytic lymphohistiocytosis; Exocitosis; Cytotoxic granules.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100016

Universidad Nacional de Rosario Facultad de Ciencias Bioquímicas y Farmacéuticas Secretaría de Posgrado Actividades de Posgrado Año 2017
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100020

La resistina se asocia con la proteína C reactiva y marcadores de riesgo cardiovascular en niños obesos
Provedor de dados: 38
Autores: Souki,Aida; Prieto,Carem; Garcia,Doris; Pérez-Jiménez,Francisco; Valero,Paola; Arráiz,Nailet; Linares,Sergia; Cano,Clímaco.
El objetivo del trabajo fue evaluar los niveles de resistina sérica y su asociación con la proteína C reactiva (PCR-hs), óxido nítrico (NO) y lípidos plasmáticos (LP) en sujetos de edad pediátrica. Participaron 366 niños y adolescentes (10-16 años), agrupados en eutróficos (n=162) y obesos (n=204). Se les estudió peso, talla, circunferencia de la cintura, resistina sérica, glucosa e insulina basal, LP, NO, PCR-hs, malondialdehído y tensión arterial. Se calculó el IMC, el índice cintura-talla (IC/T) y el HOMA-IR. Se utilizaron las pruebas t de Student, ANOVA, U de Mann y Whitney o Kruskal- Wallis para comparar entre grupos y la correlación de Spearman para determinar asociación entre variables. Los obesos masculinos presentaron niveles superiores de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resistina; Obesidad; Riesgo cardiovascular; Proteína C reactiva ultrasensible; Oxido nítrico; Lípidos plasmáticos.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100005

Prof. Dr. Gustavo Alberto Negri&amp;#8224;, su trayectoria 1945-2017
Provedor de dados: 38
Autores: Pizzolato,Marco.
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400017

Anemia inflamatoria: fisiopatología, diagnóstico y tratamiento
Provedor de dados: 38
Autores: Feldman,Leonardo; Najle,Roberto; Rivero,Mariana Alejandra; Rodríguez,Edgardo Mario; Estein,Silvia Marcela.
La anemia de la Inflamación (AI) es considerada la segunda causa más frecuente de anemia a nivel mundial después de la deficiencia de hierro. Se observa comúnmente en infecciones crónicas, tumores, traumas, y desórdenes inflamatorios. La AI es típicamente normocítica normocrómica usualmente moderada y se produce por una hipoferremia como resultado del secuestro de hierro en el sistema retículo endotelial, de la reducción de la eritropoyesis y de la inhibición de la absorción del hierro en intestino. La patogenia de la AI está mediada por citoquinas inflamatorias y hepcidina, péptido producido en el hígado, que regulan la homeostasis del hierro, actúan suprimiendo la eritropoyesis, y la vida media de los eritrocitos se encuentra ligeramente acortada. Los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anemia inflamatoria; Hepcidina; Citoquinas inflamatorias; Hierro; Eritropoyetina; Diagnóstico; Tratamiento.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300011

Estudio comparativo de la determinación de vitamina D por dos inmunoensayos
Provedor de dados: 38
Autores: Valero Chávez,Francisco Javier; Luengo Pérez,Luis Miguel; González,Socorro Alejo; Bravo Santos,Rafael; Cubero Juánez,Javier.
La vitamina D es un metabolito que tiene gran importancia en la actualidad, debido al descubrimiento de nuevas funciones. La mejor manera de medir los niveles de vitamina D en el organismo es medir los niveles de 25(OH)vitamina D, pero hoy en día no existe estandarización entre métodos y, por lo tanto, existe gran variabilidad entre ellos. En los laboratorios clínicos los métodos más utilizados son los inmunoensayos y sólo ADVIA Centaur Vitamina D Total assay e IDS-iSYS 25-Hydroxy Vitamin D pasaron la primera fase del Vitamin D Standardization Certification Program (VDSCP) diseñado por el Centre for Diseases Control (CDC). En este estudio se compararon estos 2 inmunoensayos, pero a pesar de haber pasado la primera fase del VDSCP los resultados reflejaron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitamina D; Inmunoensayo; Comparación; Interferencias; Variabilidad.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400004

Ecos del IX Congreso Argentino de la Calidad en el Laboratorio Clínico - CALILAB 2016
Provedor de dados: 38
Autores: Fink,Nilda E.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100001

Inmunoserología y métodos moleculares para el diagnóstico de Chagas: revisión sistemática rápida
Provedor de dados: 38
Autores: Gonzalez,Lucas; Scollo,Karenina; Bardach,Ariel; Sáez-Alquezar,Amadeo; Ferlín,Carina; Albajar-Viñas,Pedro; Ciapponi,Agustín; Sosa-Estani,Sergio.
Con el objetivo de incrementar la precisión diagnóstica, la Organización Mundial de la Salud recomienda la realización de dos o más pruebas inmunoserológicas para el diagnóstico de la enfermedad de Chagas en etapa crónica. El objetivo de este trabajo fue realizar una revisión sistemática rápida acerca del desempeño de las técnicas inmunoserológicas y métodos moleculares en la población general. Se identificaron 178 estudios de los cuales fueron incluidos nueve. Las técnicas de ELISA mostraron la mayor sensibilidad (82-98%) y especificidad (96-100%). Los métodos rápidos mostraron valores de sensibilidad entre 88-93% y especificidad 97- 100%, mientras que los métodos moleculares (PCR) presentaron niveles muy variables de sensibilidad (22-92%) y especificidad...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chagas; Diagnóstico; Sensibilidad; Especificidad; Reacción en cadena de la polimerasa; Ensayo inmunoenzimático ELISA; Inmunofluorescencia indirecta; Hemaglutinación indirecta.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100010

Evaluación de los límites analíticos de desempeño del laboratorio del HIGA O. Alende de Mar del Plata
Provedor de dados: 38
Autores: Franco,Micaela; Gil,Pamela; Ottaviani,Mariano Andrés; Belloni,Juan Alberto.
Los límites analíticos de desempeño (LAD) forman parte del diseño del programa de control de calidad analítico. Los objetivos de este trabajo fueron determinar imprecisión (CV), error sistemático (ES) y error total (ET) de 14 analitos de Química Clínica en los sectores de planta y de guardia del laboratorio del HIGA O. Alende de Mar del Plata, evaluar su desempeño analítico según variabilidad biológica y comparar los datos obtenidos. Se realizó un estudio retrospectivo con el registro de controles de calidad y se utilizaron los LAD derivados de VB para obtener las especificaciones de calidad para CV, ES y ET. Respecto del CV, cumple con los criterios el 79% en el sector planta y el 64% en el de guardia. Y en cuanto al ET, cumple el 90% y el 75%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Límites analíticos de desempeño; Calidad analítica; Variabilidad biológica; Imprecisión; Error sistemático; Error total.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100015

Reactividad cruzada de una prueba de tamizaje para Enfermedad Celíaca con otros autoanticuerpos
Provedor de dados: 38
Autores: Aristimuño,Ana María; de la Colina,Amelia Noemí; Lagoa,Patricia Rosana; Ventimiglia,Fernando Daniel; Minervini,María Virginia; Martínez Methol,María Soledad; Bruno,Jorge José; D´Agostino,Liliana Elena.
El objetivo del presente trabajo fue estudiar la presencia de reactividad cruzada de la prueba de tamizaje htTG/DGP para enfermedad celíaca (EC) con otros autoanticuerpos presentes en altos títulos en diferentes enfermedades autoinmunes (EA). Se realizó un estudio de corte transversal donde se seleccionaron 100 pacientes no celíacos, de ambos sexos (15 hombres, 85 mujeres) con edades entre 4 y 86 años que presentaban diversas EA. Para estudiar presencia de EC se realizaron por ELISA los ensayos QUANTALite® (INOVA Diagnostics, EE.UU.): htTG/DGPScreen, htTG IgA e IgG, Gliadina IgAII e IgGII. Los autoanticuerpos de otras EA se determinaron por inmunofluorescencia indirecta y por electroquimioluminiscencia. La reactividad cruzada encontrada con autoanticuerpos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Autoanticuerpos; Enfermedad celíaca; Prueba de tamizaje.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100006

Prevalencia de infección por Trypanosoma cruzi en escolares de Salta y Chaco, Argentina
Provedor de dados: 38
Autores: Sánchez Negrette,Olga; Zaidenberg,Mario; Monteros,María Concepción; Acevedo,Analía; Linares,Víctor; Freilij,Héctor.
El objetivo del trabajo consistió en identificar la seroprevalencia de la infección por Trypanosoma cruzi en niños en edad escolar en localidades de las provincias de Salta y Chaco. Se trabajó en 44 escuelas de la ciudad de Salta, en parajes de San Carlos; en 10 escuelas de La Unión y en 7 escuelas de Taco Pozo. El trabajo tiene un diseño de corte transversal. La toma de muestra se realizó por punción capilar con equipos Serokit, y la confirmación de los casos seropositivos o dudosos por punción venosa, y obtención de suero, para realizar HAI y ELISA. Los casos seropositivos confirmados fueron tratados con Benznidazol® durante 60 días en dosis de 5-7mg/kg/ día. Para el análisis estadístico se elaboraron tablas con frecuencias absolutas y relativas. Se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seroprevalencia; Trypanosoma cruzi; Escolares; Salta; Chaco; Vectores.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400016

Encuesta de ioduria como control de la ingesta de iodo
Provedor de dados: 38
Autores: Servetto,Cristina; Rosas,Belén; Da Rosa,Laura; Bidegain,Estela; López,Elizabeth; Pintos,Cristina; Lena,Ana; Yametti,Laura; Fernández,Lucía; Pereira,Adriana; Salveraglio,Carlos; Queiruga,Graciela.
Desde 1964, año en que se incorporó iodo a la sal de mesa, ha disminuido notoriamente el bocio endémico en Uruguay. Por haberse modificado con posteridad, en dos oportunidades la proporción del iodo en la misma, se tornó imprescindible reevaluar los niveles de la ingesta poblacional siguiendo las recomendaciones de la OMS. Los objetivos de este estudio fueron evaluar los niveles de iodo en la población a través de las iodurias, seleccionar la mejor forma de expresar su excreción y estudiar la relación de las mismas con el sodio urinario. Se analizaron 491 muestras de orina de niños en edad escolar, de nueve departamentos del Uruguay y se determinó iodo, sodio y creatinina. Se observó una mediana de 0,248 mg/L de iodo, valor adecuado según las...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Iodurias; Natriuria y ioduria; Ingesta de iodo.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400002

Comentarios bibliográficos
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/review
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200013

Universidad de Buenos Aires Cursos de actualización y perfeccionamiento Facultad de Farmacia y Bioquímica 2017
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100019

Premios APTA RIZZUTO 2015-2016
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100003

Exposición de criptoantígeno eritrocitario por larvas recién nacidas de Trichinella spiralis
Provedor de dados: 38
Autores: Ponce de León,Patricia; Nocelli,Jimena; López Murúa,Gabriel.
La desialización del eritrocito puede exponer determinantes antigénicas crípticas de la membrana, entre las cuales se encuentra el antígeno T. Se ha comunicado que las larvas recién nacidas de Trichinella spiralis (LRN), las cuales circulan por el torrente sanguíneo del hospedador, captan el ácido siálico eritrocitario. El objetivo de este trabajo fue estudiar in vitro la exposición del criptoantígeno T por la desialización producida por distintas concentraciones de LRN. Se trabajó con 30 suspensiones eritrocitarias en medio enzimático, que fueron incubadas en partes iguales con concentrados de LRN (GR Tratados) durante 2 horas a 37 ºC con agitación continua. Los respectivos GR Controles se pusieron en contacto con solución salina. El tratamiento de 10/30...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antígeno T; Larvas recién nacidas; Trichinella spiralis.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400013

XX Congreso SAEM: Del 1 al 3 de noviembre de 2017 Palais Rouge, Salguero 1433, CABA
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200014

Evaluación de echinococcosis canina en la zona de alta montaña en la provincia de Tucumán, Argentina
Provedor de dados: 38
Autores: Parra,Alberto; Orellana,Víctor; Rodríguez,Carlos; Valle,María; Ricoy,Gerardo; Santillán,Graciela.
La echinococcosis es un serio problema para la salud pública en Argentina. Es una zoonosis producida por el cestode de la familia Taeniidae, Echinococcus granulosus, siendo el perro el principal hospedador definitivo. El objetivo de este trabajo fue evaluar la echinococcosis en perros en la zona de alta montaña de la provincia de Tucumán. La principal actividad económica en esta zona es la cría de ganado para consumo familiar, sobre todo ovino. Las condiciones climáticas, las distancias y la falta de movilidad adecuada hacen difícil el acceso a los servicios de salud y a los establecimientos educativos. Se evaluaron seis parajes en un primer estudio con 103 muestras de materia fecal canina y se encontró que el 39,8% (41/103) fueron positivas. El estudio se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Echinoccocosis; Prevalencia; Vigilancia; Programas de control; Coproantígeno.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100017

50º Aniversario de Acta Bioquímica Clínica Latinoamericana
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100002

Hemoglobinas inestables
Provedor de dados: 38
Autores: Eandi Eberle,Silvia Judith; Feliu Torres,Aurora Silvia.
Las variantes estructurales de hemoglobina son, en su mayoría, el resultado de sustituciones puntuales de aminoácidos en una de las cadenas de globina. En muchos casos, estas hemoglobinopatías son inocuas, mientras que en otros determinan alteraciones en la estabilidad y función de la hemoglobina, ocasionando manifestaciones clínicas de severidad variable. En las hemoglobinas inestables, las alteraciones disminuyen la solubilidad, y así facilitan la formación de complejos de hemoglobina precipitada y desnaturalizada (Cuerpos de Heinz) que ocasionan el daño de la membrana y finalmente la destrucción prematura de los eritrocitos. Representan una rara etiología de anemia hemolítica congénita. Hasta la actualidad se han descrito alrededor de 150 hemoglobinas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemoglobinas inestables; Anemia hemolitica; Cuerpos de Heinz.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300009

Análisis de desempeño de laboratorios clínicos en la determinación de glucosa y creatinina
Provedor de dados: 38
Autores: Acosta García,Edgar José; Peñate,Eloina; Cruces,María Elena.
Los Programas de Evaluación Externa de la Calidad (PEEC) de los laboratorios clínicos (LC) son indispensables para la comparación del desempeño en una o varias determinaciones de analitos entre diferentes laboratorios. Se evaluó el desempeño de los LC del estado Carabobo en la determinación de las concentraciones séricas de glucosa y creatinina. El estudio fue no experimental, descriptivo, de campo y de corte transversal. Se evaluaron 22 laboratorios entre públicos y privados del estado Carabobo. Se distribuyeron a cada LC 5 sueros controles (SC) nivel I (NI) y 5 nivel II (NII) para glucosa y creatinina. Se evaluó la imprecisión intra- e interlaboratorios, el sesgo y el error total de los resultados. No hubo LC con competencia para la determinación de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Precisión; Intralaboratorio; Interlaboratorios; Confiabilidad.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100014

Simposio ALAC: 10 y 11 de Agosto de 2017 Hotel Abasto. Salón Principal, Av. Corrientes 3190, CABA
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200015

Comentarios bibliográficos
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/review
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000100018

Ecos del Congreso Nacional Bioquímico CUBRA XIV
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400020

Primeros resultados del Plan Piloto de Pesquisa Neonatal de Hemoglobinopatías en Uruguay: first results in Uruguay
Provedor de dados: 38
Autores: Audicio,Paola; Segobia,Betsey; Queijo,Cecilia; Queiruga,Graciela.
Las hemoglobinopatías son los trastornos monogénicos más frecuentes y son causa de importante morbilidad y mortalidad en el mundo. En enero de 2013 el Laboratorio de Pesquisa Neonatal comenzó un programa piloto destinado a conocer la incidencia de estas patologías en la población uruguaya, orientado a disminuir su impacto mediante un tratamiento precozmente instituido. En este trabajo se presentan los resultados encontrados mediante el plan piloto de pesquisa neonatal de hemoglobinopatías entre enero de 2013 y diciembre de 2014. Durante este período se procesaron muestras de sangre en papel de filtro tomadas a las 40 h de vida de todos los recién nacidos dentro del territorio uruguayo. Se analizaron mediante HPLC-CE (Variant Nbs, BIORAD). Se encontró una...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemoglobinopatías; Pesquisa neonatal; Anemia falciforme.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200010

Programa de Actividades Científicas de la Androgen Excess and Polycystic Ovary Syndrome Society (AE-PCOS Society): 15° Reunión Anual San Antonio, Texas, EE.UU. - 26-28 de octubre de 2017
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200016

Anemia microcítica-hipocrómica: anemia ferropénica versus b talasemia menor
Provedor de dados: 38
Autores: Felisa Aixalá,Mónica Teresita.
Las anemias microcíticas hipocrómicas (m-H) presentan VCM&lt;80 fL y HCM&lt;27 pg. Son producto de la baja biodisponibilidad del hierro (Fe), o del defecto de la síntesis de globinas o del HEMO. La más frecuente es la anemia por deficiencia de hierro (ADH), seguida por las talasemias y las anemias de procesos crónicos. Menos frecuentes son aquellas por defectos en el HEMO o por causas genéticas del metabolismo del Fe. El objetivo del trabajo es revisar, por medio de parámetros de distinta complejidad, diferencias entre ADH y b talasemia heterocigota (b-Tal-het), las m-H de mayor prevalencia en nuestro medio. Los recuentos de eritrocitos y reticulocitos, hemoglobina, ferremia, ferritina, saturación de la transferrina, HbA2, porcentaje de alteraciones...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microcitosis; Deficiencia de hierro; Volumen corpuscular medio; Amplitud de la dispersión eritrocitaria; Hipocromía; Talasemia; Índices de microcitosis; Receptor de transferrina; Electroforesis de hemoglobina; Estrés oxidativo.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300004

Mutaciones en JAK2, MPL y CALR en neoplasias mieloproliferativas: análisis de disociación de alta resolución
Provedor de dados: 38
Autores: Videla,Yanina Paola; Quintana,Silvina; Pérez Maturo,Josefina; Di Gerónimo,Vanesa; Martín,Nazarena; Pagani,Fernando.
La policitemia vera (PV), la trombocitemia esencial (TE) y la mielofibrosis idiopática (MI) constituyen las Neoplasias Mieloproliferativas cromosoma Filadelfia negativas (NMP Ph-neg). La mutación V617F en el exón 14 del gen JAK2 ha sido descripta en un 90% de los casos de PV y en un 50% de TE y MI. Recientemente, se identificaron mutaciones en el exón 10 del gen MPL y en el exón 9 del gen CALR, presentes en un 5 y 73% de pacientes con TE y MI sin mutaciones en JAK2, respectivamente. En el presente trabajo se estudió la detección de dichas mutaciones en 52 pacientes con NMP, mediante amplificaciones por PCR en Tiempo Real con posterior análisis por High Resolution Melting (HRM) y secuenciación. La mutación V617F en JAK2 fue registrada en un 83,3% de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neoplasias mieloproliferativas; JAK2; Gen de la calreticulina; Gen del receptor de la trombopoyetina; Análisis de disociación de alta resolución; Diagnóstico.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000400009

Determinación colorimétrica de glucosa y consumo de glucosa en cultivos de células adiposas 3T3-L1
Provedor de dados: 38
Autores: Pinzón García,Ana Delia; Sandoval Hernández,Adrián Gabriel; Rivera Diaz,Paola Andrea; Gómez Camargo,Doris Esther; Gómez Alegría,Claudio Jaime.
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200004

Cinética de desialización eritrocitaria producida por larvas musculares vivas de Trichinella spiralis
Provedor de dados: 38
Autores: Ponce de León,Patricia; López Murúa,Gabriel.
Las larvas musculares (LM) de T. spiralis alteran la agregación eritrocitaria. El objetivo del trabajo fue estudiar la cinética de desialización eritrocitaria producida por LM vivas de T. spiralis. Se realizaron 3 experiencias en las que se incubaron 60 larvas con 30 &amp;#956;L de eritrocitos en 1 mL de solución salina durante 1, 2, 3, 4, 5, 6, 7, 10, 15, 18, 20, 22 y 24 horas. Se aplicó el Método de Titulación de la Agregación por Polibrene y se calculó Título, Score Total y CexpCASP en los eritrocitos Control e incubados con LM. Los resultados mostraron que en la primera hora no hubo captación de ácido siálico. A las 2 horas el coeficiente comenzó a decrecer y a las 3 horas el Título disminuyó en una dilución y el coeficiente fue 0,62±0,021. En los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cinética; Desialización; Larvas musculares; Trichinella spiralis.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200009

Hepcidina: la llave del metabolismo del hierro
Provedor de dados: 38
Autores: Nucifora,Elsa Mercedes.
En las últimas décadas se ha avanzado en el conocimiento de la regulación del metabolismo del Hierro (Fe). La Hepcidina (Hp), producida por los hepatocitos, regula la absorción de hierro desde el tubo digestivo y la liberación desde los depósitos del sistema macrofágico y del hígado. En caso de deficiencia de Fe, la Hp está disminuida entregando Fe a la transferrina (Tf). El aumento de Fe y de las citoquinas de la inflamación estimulan la producción de Hp. El ejecutor de la Hp es la Ferroportina (FP), único exportador de Fe. Hay reguladores naturales de la Hp, como la Matriptasa 2. Las mutaciones que limitan su expresión inducen dificultades en la disponibilidad de Fe (IRIDA, sobrecarga de Fe). En los últimos años se ha identificado la Eritroferrona,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepcidina; Hierro; Ferroportina; Matriptasa ii; Eritropoyetina; Eritroferrona.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300012

Evaluación de la zona gamma del proteinograma por electroforesis: correspondencia clínico-patológica
Provedor de dados: 38
Autores: Boban,María José; de Elías,Rafael; Kiener,Oscar; Kiener,Gisel; Jarmi,Valeria; Barzón,Silvia.
El proteinograma por electroforesis (PxE) sérico es solicitado para detectar modificaciones del perfil proteico. El objetivo del trabajo fue evaluar las alteraciones de la zona gammaglobulina y su correspondencia con distintos estados clínico-patológicos. Se incluyeron 7.259 pacientes (1-89 años) a los que en 2013 se les solicitó PxE. Según el trazado densitométrico, en la zona gammaglobulina se reconocieron diferentes grupos: hipogammaglobulinemia (&lt;0,60 g/dL), hipergammaglobulinemia policlonal (&amp;#8805;1,80 g/dL), banda monoclonal (BM) y bandas oligoclonales. Prevaleció la hipergammaglobulinemia policlonal (4,2%), seguida por BM (1,4%) e hipogammaglobulinemia (0,8%). Hipergammaglobulinemia policlonal (&amp;gt;3 g/dL) se observó en: hepatitis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Proteinograma por electroforesis; Hipogammaglobulinemia; Hipergammaglobulinemia; Zona gammaglobulinas; Banda monoclonal.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000200006

Homenaje a la trayectoria de la Dra. Nilda Ester Fink
Provedor de dados: 38
Autores: Crisp,Renée Leonor.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572017000300001

Assessing the spatial variation of functional diversity estimates based on dendrograms in phytoplankton communities
Provedor de dados: 39
Autores: Machado,Karine Borges; Teresa,Fabrício Barreto; Nabout,João Carlos.
ABSTRACT Variation in phytoplankton functional diversity is partioned and mapped using several indices and linkage methods based on dendrograms. The relationships between diversity metrics and major environmental predictors, including zooplankton density, were assessed in 29 phytoplankton communities of floodplain lakes distributed along the Middle Araguaia River in central Brazil. The dendrogram-based functional diversity indices were Functional Group Richness, Functional Diversity, Mean Pairwise Distance and Mean Nearest Taxon Distance, whereas seven different hierarchical agglomerative linkage methods we used. The performance of indices were compared using ANOVA and their spatial variation in response to major environmental predictors evaluated. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araguaia River; Functional traits; Linkage method; Mean Nearest Taxon Distance; Mean Pairwise Distance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400571

Effects of sex and altitude on nutrient, and carbon and nitrogen stable isotope composition of the endangered shrub Baccharis concinna G.M. Barroso (Asteraceae)
Provedor de dados: 39
Autores: Fernandes,G. Wilson; Duarte,Heitor Monteiro; Silveira,Fernando A. O.; Broetto,Fernando; Lüttge,Ulrich; Rennenberg,Heinz.
ABSTRACT Previous ecological studies of dioecious plant species have found that female plants preferentially occur at lower altitudes where there are typically better nutritional conditions, while male plants often occur in less favorable sites. We compared the ecophysiological performance of male and female plants in three populations of the dioecious Baccharis concinna, an endemic species of rupestrian grasslands of Serra do Cipó, in southeastern Brazil. We hypothesized that physiological differences between the sexes would explain the distribution patterns of the populations. Analyses of the tissue content of phosphorus (P), calcium (Ca), potassium (K) and sodium (Na), and carbon and nitrogen stable isotopes, were used to assess nutritional status and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Campos rupestres; Dioecy; Plant sex; Resource allocation; Rupestrian grasslands; Serra do Cipó.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200229

Patterns of growth, development and herbivory of Palicourea rigida are affected more by sun/shade conditions than by Cerrado phytophysiognomy
Provedor de dados: 39
Autores: Moura,Renan Fernandes; Alves-Silva,Estevão; Del-Claro,Kleber.
ABSTRACT Plant development is influenced by several abiotic factors, which in turn influence morphological traits and life history. We investigated whether leaf area, herbivory, toughness, fluctuating asymmetry, structural complexity and the number of inflorescences of Palicourea rigida are influenced by sun/shade conditions or by Cerrado phytophysiognomy (typical cerrado or rupestrian field). We expected to find greater structural complexity, leaf toughness and more inflorescences in sun plants; shaded plants were expected to exhibit a greater degree of fluctuating asymmetry (an index of plant stress), reduced leaf toughness and greater herbivory. As for phytophysiognomies, we expected to find higher levels of leaf toughness and reduced structural...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian savanna; Environmental stress; Fluctuating asymmetry; Leaf area loss; Rubiaceae; Rupestrian grassland.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200286

Agrobiodiversity and in situ conservation in quilombola home gardens with different intensities of urbanization
Provedor de dados: 39
Autores: Ávila,Julia Vieira da Cunha; Mello,Anderson Santos de; Beretta,Mariane Elis; Trevisan,Rafael; Fiaschi,Pedro; Hanazaki,Natalia.
ABSTRACT Among the agricultural environments of traditional communities, home gardens are frequently cited as high agrobiodiversity sites. However, the agrobiodiversity of home gardens along a rural-urban gradient demands study in order to identify possible influences of urbanization and to support mitigation of impacts. The present work investigated the role home gardens play in the in situ agrobiodiversity conservation of plants in quilombola communities with different degrees of urbanization. The study found that more urbanized communities have larger home gardens, but the average richness of plant species in these areas was not statistically different among the communities. Furthermore, the abundance of plant species was similar. Medicinal and food...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethnobotany; Interspecific diversity; Rural-urban gradient; Traditional community; Yard.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100001

Metabolic responses and β-carotene production by the unicellular green alga Dunaliella salina exposed to leaf extracts
Provedor de dados: 39
Autores: Einali,Alireza; Mazang-Ghasemi,Sahar; Valizadeh,Jafar; Noorozifar,Meisam.
ABSTRACT The present work investigated the effects of aqueous extracts of eucalyptus ( Eucalyptus globulus) and elderberry ( Sambucus ebulus) leaves on β-carotene productivity in Dunaliella salina, a green microalga. Leaf extracts from eucalyptus have greater amounts of phenolics and flavonoids, as well as greater ferric reducing antioxidant potential than elderberry. The extracts of both species greatly inhibited growth of algal suspensions. However, chlorophyll and β-carotene concentration increased in cells treated with leaf extracts, and the highest values were detected in 1 % eucalyptus and 2 % elderberry extracts. Fresh weight, total sugar, and protein content significantly increased following exposure of cells to different doses of leaf extracts....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-carotene; Dunaliella salina; Eucalyptus; Elderberry; Leaf extracts; Metabolites; Stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200180

Secretory spaces in species of the clade Dipterygeae (Leguminosae, Papilionoideae)
Provedor de dados: 39
Autores: Palermo,Fernanda Helena; Teixeira,Simone de Pádua; Mansano,Vidal de Freitas; Leite,Viviane Gonçalves; Rodrigues,Tatiane Maria.
ABSTRACT Dipteryx, Pterodon and Taralea are legume genera known for secreting oils, produced in secretory canals and cavities, with medicinal properties. We analyzed the distribution, morphology and histochemistry of these glands in leaves and stems of Dipteryx alata, Pterodon pubescens and Taralea oppositifolia, three Neotropical species, using standard techniques for anatomy and histochemistry. Secretory spaces, i.e. secretory cavities and canals, exhibited a wide lumen and a single layer of epithelium. Digitiform epithelial cells, forming trabeculae protruding into the lumen, were seen in all three species. Secretory cavities with a rounded or oval lumen and secretory canals with an elongated lumen in longitudinal sections were found only in T....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Fabaceae; Gland; Secretory canals; Secretory cavities.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300374

Habitat heterogeneity and diversity of bryophytes in campos rupestres
Provedor de dados: 39
Autores: Valente,Emilia de Brito; Pôrto,Kátia Cavalcanti; Bastos,Cid José Passos.
ABSTRACT Campos rupestres (rupestrian grasslands) are characterized by the presence of rock outcrops associated with an herbaceous-shrub physiognomy typically growing on quartzitic soils; they occur a wide variety of habitats. Bryophytes respond rapidly and efficiently to variation in microclimate. The present work aimed to study bryophyte species richness, diversity and composition, their life forms, and the substrates they colonize in exposed and shaded habitats in campos rupestres of Chapada Diamantina. Collections were made in 25 x 25 m sampling plots. One hundred and nine species were recorded and included a predominance of mosses (78 spp.) over liverworts (31 spp.). Most species (79 %) were restricted to one of the two types of habitat (exposed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chapada Diamantina; Bahia; Brazil; Liverworts; Mosses.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200241

Trichomes that secrete substances of a mixed nature in the vegetative and reproductive organs of some species of Moraceae
Provedor de dados: 39
Autores: Schnetzler,Bruna Noce; Teixeira,Simone Pádua; Marinho,and Cristina Ribeiro.
ABSTRACT This study aimed to obtain new information about the distribution, morphology and content of secretory trichomes present in the vegetative and reproductive organs of four species of Moraceae: Artocarpus heterophyllus, Dorstenia cayapia, Maclura tinctoria and Sorocea bonplandii. Stem, leaf, flower and inflorescence samples were processed for scanning electron and light microscopy. The species have secretory trichomes on the leaf blade, petiole and stem and also on the inflorescence and flowers of D. cayapia and S. bonplandii and on the peduncle of the inflorescence in A. heterophyllus. These trichomes are of the capitate type in all species, but A. heterophyllus also possess peltate secretory trichomes. Both trichome types exhibit a multicellular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Artocarpus; Dorstenia; Flower; Gland; Leaf; Maclura; Morphology; Sorocea.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300392

Floristic and ecological characterization of habitat types on an inselberg in Minas Gerais, southeastern Brazil
Provedor de dados: 39
Autores: Paula,Luiza F. A. de; Mota,Nara F. O.; Viana,Pedro L.; Stehmann,João R.
ABSTRACT Inselbergs are granitic or gneissic rock outcrops, distributed mainly in tropical and subtropical regions. They are considered terrestrial islands because of their strong spatial and ecological isolation, thus harboring a set of distinct plant communities that differ from the surrounding matrix. In Brazil, inselbergs scattered in the Atlantic Forest contain unusually high levels of plant species richness and endemism. This study aimed to inventory species of vascular plants and to describe the main habitat types found on an inselberg located in the state of Minas Gerais, in southeastern Brazil. A total of 89 species of vascular plants were recorded (belonging to 37 families), of which six were new to science. The richest family was Bromeliaceae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endemism; Granitic and gneissic rock outcrops; Life forms; Terrestrial islands; Vascular plants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200199

Effect of some environmental factors on seed germination of Eryngium caeruleum M. Bieb. populations
Provedor de dados: 39
Autores: Rezvani,Mohammad; Zaefarian,Faezeh.
ABSTRACT The effects of alternating and constant temperatures and light regimes, osmotic and salt stress and pH were tested on seed germination in four populations of Eryngium caeruleum. Laboratory experiments revealed that the four populations exhibited different responses to alternating temperature and light conditions. Alternating temperature and photoperiod had a greater positive effect on seed germination compared to complete darkness. The optimal constant temperature within 10 ºC to 15 ºC for seed germination of each population was determined in a light/dark photoperiod. Seed germination severely decreased under water stress and was completely inhibited at -0.8 MPa osmotic potential. Saline stress sharply decreased germination percentage. Germination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternating and constant temperatures; Germination; Light; PH; Salt and osmotic stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200220

Corona development and floral nectaries of Asclepiadeae (Asclepiadoideae, Apocynaceae)
Provedor de dados: 39
Autores: Monteiro,Mariana Maciel; Demarco,Diego.
ABSTRACT Flowers of Asclepiadoideae are notable for possessing numerous nectaries and elaborate coronas, where nectar can accumulate but is not necessarily produced. Given the complexity and importance of these structures for reproduction, this study aimed to analyze the ontogeny of the corona, the structure and position of nectaries and the histochemistry of the nectar of species of Asclepiadeae. Two types of coronas were observed: androecial [C(is)] and corolline (Ca). The development of the C(is)-type of corona initiates opposite the stamens in all species examined with the exception of Matelea in which it begins to develop as a ring around the filament tube. Despite their morphological variation, coronas typically originate from the androecium. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asclepiads; Histochemistry; Ontogeny; Nectar; Structural; Diversity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300420

Are stem nectaries common in Gentianaceae Juss.?
Provedor de dados: 39
Autores: Dalvi,Valdnéa Casagrande; Meira,Renata Maria Strozi Alves; Azevedo,Aristéa Alves.
ABSTRACT Extrafloral nectaries (EFNs) are specialized structures that produce and release nectar and are located on leaves, cotyledons and, more seldomly, stems. Peculiar leaf nectaries have been described for thirty-three Neotropical species of Gentianaceae, while stem nectaries have been reported for only nine. The aim of this study was to verify the occurrence of stem EFNs within Gentianaceae and investigate the existence of a correlation between their occurrence and the geographical distribution of species. Samples of internodal regions from field and herbarium specimens were submitted to standard light microscopy techniques. Data regarding the geographical distribution of species were acquired from herbarium specimens and the literature. A total of 37...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coutoubeinae; Helieae; Potalieae; Saccifolieae; Secretory structures.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300403

Updating the list of chromosome numbers for Philodendron (Araceae)
Provedor de dados: 39
Autores: Vasconcelos,Emanuelle V.; Brasileiro-Vidal,Ana C.; Benko-Iseppon,Ana M.; Vasconcelos,Santelmo.
ABSTRACT Aiming for a better understanding of karyotype evolution within Philodendron, we report chromosome counts for 23 species of the genus, of which 19 are being reported for the first time, thus increasing to 84 ( ca. 17 % of the genus) the total number of species with available chromosome counts. The diploid numbers 2 n = 32 and 2 n = 34 were the most common, with 10 and 11 species, respectively, whereas only two species presented different chromosome numbers ( P. giganteum with 2 n = 30 and P. adamantinum with 2 n = 36). The results are discussed in the context of previous analyses of karyotypes of Philodendron spp., taking into account bidirectional dysploidy as the main mechanism of chromosome number evolution within the genus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aroids; Diploid number; Dysploidy; Karyotype; Philodendron.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200309

How does the nectar of stomata-free nectaries cross the cuticle?
Provedor de dados: 39
Autores: Paiva,Elder Antônio Sousa.
ABSTRACT In many glandular structures, departure from the cell is only one step in the process of exudate release to the plant surface. Here the set of events that lead nectar to the external environment is presented and discussed mainly for stomata-free nectaries. After being synthesized, the nectar or some of its component needs to be released to the environment where it performs its functions. Nectar precursors derived from cell metabolism need to cross several barriers, such as the cell membrane and cell wall, in order to become nectar. Then the nectar must cross the cuticle or pass through stomata in order to be offered to plant mutualists. Release through stomata is a simple mechanism, but the ways by which nectar crosses the cuticle is still...
Palavras-chave: Animal-plant interactions; Cuticular pores; Nectar; Nectar release; Plant secretion.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300525

Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest
Provedor de dados: 39
Autores: Bastos,Maria Josirene Souza Moreira; Bastos,Lucimário Pereira; Souza,Everton Hilo de; Soares,Taliane Leila; Morais,Daniel Vieira; Souza,Fernanda Vidigal Duarte de; Costa,Maria Angélica Pereira de Carvalho.
ABSTRACT Alcantarea nahoumii occurs exclusively in the state of Bahia, Brazil, and is classified as vulnerable due to deforestation and frequent fires in the region. Knowledge of floral and reproductive biology is fundamental to understanding ecological interactions, as well as the reproductive success of plant species. The objective of this study was to evaluate the floral and reproductive biology of A. nahoumii in an Atlantic Forest fragment with regard to phenology, pollen viability, stigma receptivity, pollination ecology and reproductive systems, all of which are important parameters for of the development of conservation strategies for the species. Anthesis is diurnal and heterogeneous, starting at 6:30 a.m. and lasting until 8:00 a.m. Highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromeliaceae; Floral visitors; Nectar; Pollen viability; Reproductive systems; Stigma receptivity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400665

Floral glands in asclepiads: structure, diversity and evolution
Provedor de dados: 39
Autores: Demarco,Diego.
ABSTRACT Species of Apocynaceae stand out among angiosperms in having very complex flowers, especially those of asclepiads, which belong to the most derived subfamily (Asclepiadoideae). These flowers are known to represent the highest degree of floral synorganization of the eudicots, and are comparable only to orchids. This morphological complexity may also be understood by observing their glands. Asclepiads have several protective and nuptial secretory structures. Their highly specific and specialized pollination systems are associated with the great diversity of glands found in their flowers. This review gathers data regarding all types of floral glands described for asclepiads and adds three new types (glandular trichome, secretory idioblast and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Apocynaceae; Asclepiadoideae; Diversity; Evolution; Flower; Secretory structures.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300477

Morphology and histochemistry of glandular trichomes in Hyptis villosa Pohl ex Benth. (Lamiaceae) and differential labeling of cytoskeletal elements
Provedor de dados: 39
Autores: Tozin,Luiz Ricardo dos Santos; Rodrigues,Tatiane Maria.
ABSTRACT Lamiaceae contains many species known for their aromatic properties that are produced by the production of essential oils in glandular trichomes. Hyptis is one of the most common genera of Lamiaceae in the Brazilian flora, and includes several species with medicinal value. However, studies on the morphology and functioning of their glandular trichomes are lacking. We analyzed the morphology, histochemistry and ultrastructure of the glandular trichomes in leaves of H. villosa, emphasizing the differential distribution of actin filaments and microtubules in cells secreting hydrophilic and lipophilic compounds. Four morphotypes of glandular trichomes were identified. Total lipid, terpenes, alkaloids, phenolic compounds, proteins and polysaccharides...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Actin microfilaments; Cytoskeleton; Glandular hairs; Microtubules; Ultrastructure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300330

Typifications in Passiflora L. (Passifloraceae) described by Frei José Mariano da Conceição Vellozo
Provedor de dados: 39
Autores: Milward-de-Azevedo,Michaele Alvim.
ABSTRACT This work presents 19 lectotypifications and one epitype for the genus Passiflora (Passifloraceae sensu stricto) described by Frei José Mariano da Conceição Vellozo in Flora Fluminensis. The original illustrations are designated as lectotypes. Passiflora obtusa is here proposed to be a synonym of P. porophylla.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Flora Fluminensis; Epitype; Lectotype; Nomenclature; Passionflower.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400613

Phytoremediation of arsenic-contaminated water: the role of antioxidant metabolism of Azolla caroliniana Willd. (Salviniales)
Provedor de dados: 39
Autores: Leão,Gabriela Alves; Oliveira,Juraci Alves de; Felipe,Rafaella Teles Arantes; Farnese,Fernanda Santos.
ABSTRACT Phytoremediation has proven to be an efficient technology for removing arsenic (As) from water, but the plants used in this process need to be tolerant to the damage caused by As. The toxic effect of As on growth and functioning of the antioxidant system was studied in individual plants of Azolla caroliniana exposed to five concentrations of As (0.0, 0.25, 0.5, 1.0 and 1.5 mg L-1) for the course of five days. Growth, As absorption, enzymatic activity, total and non-protein thiols and anthocyanin content were assessed. Azolla caroliniana was able to take up large amounts of the pollutant, reaching As concentrations of 386.1 µg g-1 dry weight without saturating the absorption mechanism. The tolerance index and the growth of A. caroliniana decreased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthocyanin; Antioxidant enzymes; Aquatic plant; Thiol compounds; Water remediation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200161

Role of glutathione in tolerance to arsenite in Salvinia molesta, an aquatic fern
Provedor de dados: 39
Autores: Silva,Adinan Alves da; Oliveira,Juraci Alves de; Campos,Fernanda Vidal de; Ribeiro,Cleberson; Farnese,Fernanda dos Santos.
ABSTRACT In many plant species, tolerance to toxic metals is highly dependent on glutathione, an essential metabolite for cellular detoxification. We evaluated the responses of glutathione metabolism to arsenite (AsIII) in Salvinia molesta, an aquatic fern that has unexplored phytoremediation potential. Plants were exposed to different AsIII concentrations in nutrient solution for 24 h. AsIII caused cell membrane damage to submerged leaves, indicating oxidative stress. There was an increase in the glutathione content and ϒ-glutamylcysteine synthetase enzyme activity in the submerged and floating leaves. The glutathione peroxidase and glutathione sulfotransferase enzymes also showed increased activity in both plant parts, whereas glutathione reductase only...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arsenic; Glutathione; Macrophytes; Oxidative stress; Phytoremediation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400657

A holoparasitic plant severely reduces the vegetative and reproductive performance of its host plant in the Caatinga, a Brazilian seasonally dry forest
Provedor de dados: 39
Autores: Cruz Neto,Oswaldo; Leal,Inara Roberta; Santos,Jean Carlos; Lopes,Ariadna Valentina.
ABSTRACT Host-parasite interactions between plants may reduce the vegetative and reproductive performance of the host plant. Although it is well established that parasitic plants may negatively affect the metabolism and the number of vegetative/reproductive structures of their hosts, the effects of this interaction on the reproductive characteristics of the host plant are poorly understood. Here we document the interaction between Cuscuta partita (Convolvulaceae) and its main host, Zornia diphylla (Fabaceae), in the Caatinga of northeastern Brazil. We measured diverse reproductive/vegetative attributes of Z. diphylla in 60 plots randomly distributed in patches that were parasitized and not parasitized by C. partita. Both vegetative and reproductive...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Caatinga; Cuscuta partita; Floral traits; Haustoria; Holoparasitic plants; Plant-plant interaction; Pollen viability; Reproductive success; Zornia diphylla.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100147

Colleters in Chamaecrista (L.) Moench sect. Chamaecrista and sect. Caliciopsis (Leguminosae-Caesalpinioideae): anatomy and taxonomic implications
Provedor de dados: 39
Autores: Silva,Marinalva dos Santos; Coutinho,Ítalo Antônio Cotta; Araújo,Maicon Nascimento; Meira,Renata Maria Strozi Alves.
ABSTRACT The genus Chamaecrista contains ca. 330 species organized into six sections, of which section Chamaecrista is the second largest (ca.75 species) distributed among six series, while the section Caliciopsis contains only two species. Colleters have been described in the genus Chamaecrista and they show potential taxonomic and phylogenetic significance. They are associated with lubrication, desiccation prevention and protection from microbial attacks of young developing organs. Although six types of colleters have been described for the genus Chamaecrista, there have been no studies focusing on the diversity of colleters in the sections Chamaecrista and Caliciopsis. Samples from developing leaves and flowers of both sections were obtained from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colleter; Flower; Histochemical analysis; Leaf; Polysaccharides; Secretory structures; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300382

Morphoanatomy of nectaries of Chamaecrista (L.) Moench sections Chamaecrista , Caliciopsis and Xerocalyx (Leguminosae: Caesalpinioideae)
Provedor de dados: 39
Autores: Silva,Marinalva dos Santos; Coutinho,Ítalo Antônio Cotta; Araújo,Maicon Nascimento; Meira,Renata Maria Strozi Alves.
ABSTRACT Nectaries are specialized structures that secrete nectar. Several species of Chamaecrista possess nectaries on the petiole, which have been shown to vary widely in morphology and the chemical nature of their secretion. However, a comprehensive investigation of the nectaries of the clade formed by sect. Chamaecrista, Caliciopsis and Xerocalyx has yet to be performed. Our study aimed to confirm whether or not the leaf glands of species of this clade are in fact nectaries, determine the chemical nature of their secretion and expand the morphoanatomical database on leaf nectaries in Chamaecrista with the intention of contributing to the taxonomy and phylogeny of the genus. Samples from herbarium and field-collected material were subjected to standard...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Foliar glands; Histochemistry; Leaf glands; Secretory structures; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300445

Pseudocyphellae ontogeny and thallus anatomy in species of Punctelia Krog (Parmeliaceae, lichenized Ascomycota)
Provedor de dados: 39
Autores: Zanetti,Camila Aparecida; Barbosa,Suzana Bissacot; Adachi,Sérgio Akira; Marcelli,Marcelo Pinto.
ABSTRACT The genus Punctelia has been traditionally characterized by the type and distribution of pseudocyphellae, medullary chemical substances and the shape of conidia, whereas its species have been distinguished using mainly the shape, location, abundance and size of pseudocyphellae. Given that Punctelia is not monophyletic, additional studies are needed to determine its current delimitation. The present study used conventional techniques for structural studies using optical and scanning electron microscopy in order to describe and compare the structure and ontogeny of the pseudocyphellae of five species of Punctelia. The main differences among the studied species involve the type of pseudocyphellae development, the presence or absence of an epicortex...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aeroplectenchyma; Lichen anatomy; Light microscopy; Parmeliaceae; Plectenchyma; Pseudocyphellae; Punctelia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100051

Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
Provedor de dados: 39
Autores: Miranda,Rafaela Marques de; Nery,Lays Araújo; Ventrella,Marília Contin.
ABSTRACT This study aimed to anatomically characterize the extrafloral nectaries (EFNs) of annatto (Bixa orellana) and determine the composition of its nectar in order to better understand their structure and function during organ development. Standard light and scanning electron microscopy techniques were used for anatomical analysis, and test-strips and a refractometer for determining nectar composition. Both receptacle and stem EFNs were found to possess similar anatomy and nectar composition, and to secrete from early to advanced developmental stages of the organs to which they are associated. EFNs consisting of uniseriate epidermis, nectariferous parenchyma and subnectariferous parenchyma were found located where vascular tissue is immersed. Some...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ants; Histochemistry; Nectar release; Secretory structure; Urucum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300468

Relationship between seed moisture content and acquisition of impermeability in Nelumbo nucifera (Nelumbonaceae)
Provedor de dados: 39
Autores: Jaganathan,Ganesh K.; Song,Danping; Liu,Wei; Han,Yingying; Liu,Baolin.
ABSTRACT Seeds of Nelumbo nucifera do not imbibe water, and thus have physical dormancy (PY). However, a proportion of seeds are permeable to water, and so we hypothesized that variation in moisture content is a reason for the development of both permeable and impermeable seeds. The permeable proportion of seeds present in a lot collected from Suzhou, China, was separated using an imbibition test. The permeable proportion had an average moisture content of 15.6 %, compared with 8.5 % for impermeable seeds. Drying permeable seeds above silica gel to 10 % and 8 % f. wb., resulted in 77 and 100 % impermeable seeds, respectively, compared with no impermeable seeds at 15 % moisture content. Dried to 10 % moisture content, and incubated above water in an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy reversal; Maternal environment; Maturation drying; Moisture content; Physical dormancy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400639

Arbuscular mycorrhizal fungi and dark septate fungi in plants associated with aquatic environments
Provedor de dados: 39
Autores: Marins,Josy Fraccaro de; Carrenho,Rosilaine.
ABSTRACT There have been several reports of symbionts in the roots of plants that live in aquatic environments. Arbuscular mycorrhizal fungi (AMF) are the most common microsymbionts and possibly recolonized the aquatic environment together with plants; however, their functions and the extent of their benefits are unclear. Furthermore, the presence of other groups of fungi, such as dark septate fungi (DSF), with functions supposedly analogous to those of mycorrhizal fungi, has also been reported. The present work provides a compilation of data regarding the presence of arbuscular mycorrhizae in plants from, or under the influence of, aquatic environments, and co-colonization by AMF and DSF. Forty species of non-vascular plants, ferns, fern allies, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colonization; Flooding; Fungal co-occurrence; Macrophytes; Taxonomic diversity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200295

Does fire determine distinct floristic composition of two Cerrado savanna communities on different substrates?
Provedor de dados: 39
Autores: Lenza,Eddie; Abadia,Ana Clara; Menegat,Hélio; Lúcio,Nadjarriny W.; Maracahipes-Santos,Leonardo; Mews,Henrique A.; Santos,Josias O. dos; Martins,Jhany.
ABSTRACT We surveyed two savanna sites, one on flat terrain with deep soil (DS), and the other on hilly terrain with rocky outcrops and shallow soil (RS), before and after an accidental fire. We found that the fire did not cause any significant changes in the species composition or diversity of either community, and did not result in floristic homogenization. However, we did record a reduction in the density of plants and in basal area in the DS savanna in comparison with the RS savanna, as well as a higher rate of basal sprouting, which indicates a trade-off between mortality and sprouting. We conclude that, whereas post-fire changes in vegetation structure were more pronounced in the DS savanna than in the RS, the difference in the underlying substrate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Fire; Fuel; Savanna; Species composition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200250

Genetic diversity in populations of Maytenus dasyclada (Celastraceae) in forest reserves and unprotected Araucaria forest remnants
Provedor de dados: 39
Autores: Reichmann,Manuel Castilhos; Zanella,Camila Ângela; Valério Júnior,Cláudio; Borges,Ana Claudia Piovezan; Sausen,Tanise Luisa; Paroul,Natalia; Mielniczki-Pereira,Albanin Aparecida; Teixeira,Amito José; Budke,Jean Carlos; Mossi,Altemir José; Cansian,Rogério Luis.
ABSTRACT Understanding the genetic structure and diversity of plants is fundamental to their conservation and permits their sustainable use by local communities. The genus Maytenus (Celastraceae) is composed of plants possessing pharmacological and antioxidant properties. However, the genetic and economic properties of the species M. dasyclada, a typical species of Araucaria forests in Brazil and Uruguay, have been little studied. In this work, the genetic structure and diversity of natural populations of M. dasyclada located in unprotected and preserved forest remnants were investigated using RAPD and isozymes markers. The results demonstrated that in areas of preservation, populations of M. dasyclada possess a relatively high degree of polymorphism and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation; Forest reserves; Genetic diversity; Maytenus dasyclada; Molecular markers.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100093

Pathways affect vegetation structure and composition in the Atlantic Forest in southeastern Brazil
Provedor de dados: 39
Autores: Silva,Bruna Gonçalves da; Castello,Ana Carolina Devides; Koch,Ingrid; Silva,Wesley Rodrigues.
ABSTRACT Although impacts generated by gaps can affect vegetation, few studies have addressed these impacts in the Atlantic Forest. Our aim was to investigate the effects of pathways of varying widths on vegetation structure and composition, considering dispersal syndromes, diversity, life forms, successional categories and threatened and exotic species occurrence in the Atlantic Forest. We studied three pathways with widths of 2, 10 and 20 m, intersecting a protected area in southeastern Brazil. To assess edge effects, plots were established adjacent to paths (edge) and 35 m from the edge (neighborhood), and in a control area without pathways. Wider pathways (10 and 20 m) exhibited reduced tree height and diameter, high liana density, exotic species, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carlos Botelho State Park; Conservation; Linear gaps; Plants; Roads; Trails.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100108

Urban ethnobotany: a case study in neighborhoods of different ages in Chapecó, Santa Catarina State
Provedor de dados: 39
Autores: Pradeiczuk,Aline; Eichemberg,Mayra Teruya; Kissmann,Camila.
ABSTRACT The study of urban home gardens is still a current gap in knowledge in Brazilian ethnobotany researches, especially in the south of Brazil. This study was carried out to survey the species composition of plants in urban residential home gardens of two neighborhoods in the municipality of Chapecó (state of Santa Catarina, southern Brazil): an older neighborhood created prior to the 1950s, and a younger neighborhood created in the decade 1970-1980. It was hypothesized that the home gardens in the older neighborhood would be larger and have greater species richness than those in the younger neighborhood. Data from 10 home gardens in each neighborhood were collected through semi-structured interviews. The plants cited by interviewees were classified...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alimentary plants; Ethnobotany; Medicinal plants; Ornamental plants; Species composition; Urban home gardens.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200276

Development of carpels and ovules in Dialypetalanthus fuscescens Kuhlm. (Rubiaceae): an enigmatic taxon
Provedor de dados: 39
Autores: Figueiredo,Rogério da Costa; Vieira,Ricardo Cardoso; Mariath,Jorge Ernesto de Araújo; Moço,Maria Cecilia de Chiara; Toni,Karen L. G. De.
ABSTRACT Dialypetalanthus is a monospecific genus that occurs in the Amazon Basin of Brazil, Bolivia and Peru and occupies a controversial position among the Rubiaceae. We continue this taxonomic discussion with the overall aim of clarifying the systematic position of D. fuscescens within the Rubiaceae. To accomplish this, we analyzed the ontogeny of its gynoecium, in particular the floral meristem, as well as the development of the carpels and cauline placentation. Gynosporogenesis and the differentiation of the carpellary septa and ovules were also described. Dialypetalanthus fuscescens was classified according to evolutionary diagrams found in the literature. The following characteristics were observed in D. fuscescens: 1) permanence of the floral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carpel development carpellary septum cauline placentation floral meristem; Ovule.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100128

Miocene fern spores and pollen grains from the Solimões Basin, Amazon Region, Brazil
Provedor de dados: 39
Autores: Sá,Natália de Paula; Carvalho,Marcelo de Araújo.
ABSTRACT This work documents fern spores and pollen grains (miospores) recovered from rocks of the Solimões Formation (Solimões Basin), their botanical affinities, ecology and distribution in the Miocene of the Amazon Region. The assemblage of miospores is well preserved and diverse. They are identified, illustrated and assigned to the ten families of ferns and 22 families of spermatophytes. All miospores were identified to the taxonomic level of species except for two taxa (Perinomonoletes and Podocarpidites). The families Pteridaceae and Arecaceae were most representative of ferns and spermatophytes, respectively. This work contributes to the knowledge of the paleoflora and will aid in paleoenvironmental, paleoecological and biostratigraphic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Miocene; Miospores; Neogene; Palynology; Solimões; Vegetation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400720

Asteraceae in the northern Espinhaço Range, Brazil: richness, endemism and conservation
Provedor de dados: 39
Autores: Staudt,Mariana Guerra; Alves,Maria; Roque,Nádia.
ABSTRACT Floristic inventories focussing on the Espinhaço Range have revealed an extensive diversity for Asteraceae and emphasize the high degree of endemism of its species. This study aims to explore the species-rich Asteraceae through a floristic survey, and by identifying endemic records for the municipality of Morro do Chapéu, Bahia. Samples were collected during six field trips in different phytophysiognomies and approximately 1,400 exsiccatae from the main herbaria collections were examined. Asteraceae in Morro do Chapéu is represented by 18 tribes, 72 genera and 119 species. Eupatorieae and Vernonieae are the most species rich tribes and currently comprise 30 and 28 species, respectively, representing 50 % of the local Asteraceae flora. Baccharis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campos rupestres; Chapada Diamantina; Compositae; Espinhaço Range; Floristic survey.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400698

Host-exclusivity and host-recurrence by wood decay fungi (Basidiomycota - Agaricomycetes) in Brazilian mangroves
Provedor de dados: 39
Autores: Nogueira-Melo,Georgea S.; Santos,Paulo J. P.; Gibertoni,Tatiana B.
ABSTRACT This study aimed to investigate for the first time the ecological interactions between species of Agaricomycetes and their host plants in Brazilian mangroves. Thirty-two field trips were undertaken to four mangroves in the state of Pernambuco, Brazil, from April 2009 to March 2010. One 250 x 40 m stand was delimited in each mangrove and six categories of substrates were artificially established: living Avicennia schaueriana (LA), dead A. schaueriana (DA), living Rhizophora mangle (LR), dead R. mangle (DR), living Laguncularia racemosa (LL) and dead L. racemosa (DL). Thirty-three species of Agaricomycetes were collected, 13 of which had more than five reports and so were used in statistical analyses. Twelve species showed significant values for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungi; Estuaries; Host-fungi interaction; Host-relationships; Plant-fungi interaction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400566

Survival and growth of tree seedlings as a function of seed size in a gallery forest under restoration
Provedor de dados: 39
Autores: Macera,Leonardo Gallo; Pereira,Silvia Rahe; Souza,Andréa Lúcia Teixeira de.
ABSTRACT Seed size is commonly related to higher rates of emergence and survival, and biomass of seedlings when introduced by direct seeding. However, few studies have evaluated whether this relationship persists when species are reintroduced as seedlings or if this effect persists after seed reserves decline. This study evaluated the effect of seed size (mass) on the probability of survival and growth of seedlings of nine native tree species introduced into a pasture area, which was originally a gallery forest in the state of São Paulo in Southeastern Brazil. The experiment occurred over the course of 24 months, in which was divided into three separate time intervals: 14 to 61 days, 61 days to 12 months, and 12 to 24 months. Seedling survival in the field...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Functional trait; Life history; Nursery-raised seedling planting; Pioneering species; Species reintroduction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400539

Cuticular n-alkane in leaves of seven Neotropical species of the family Lecythidaceae: a contribution to chemotaxonomy
Provedor de dados: 39
Autores: Silva,Rejane Maria da; Ribeiro,Rayane de Tasso Moreira; Souza,Renata Janaína Carvalho de; Oliveira,Antônio Fernando Morais de; Silva,Suzene Izídio da; Gallão,Maria Izabel.
ABSTRACT Biosynthesized from very long-chain fatty acid wax precursors, n-alkanes make a valuable contribution to the taxonomy of plants. The alkane components of foliar epicuticles of seven Neotropical species of Lecythidaceae were investigated: Bertholletia excelsa, Cariniana legalis, Couroupita guianensis, Eschweilera alvimii, Eschweilera ovata, Gustavia augusta and Lecythis pisonis. Specimens were collected in the metropolitan area of Recife, Pernambuco, and their n-alkane fractions were analyzed by gas chromatography. The chemical relationships among the species were then evaluated using cophenetic correlation and UPGMA. Among the seven species, a total of 15 n-alkanes, with 21-35 carbon atoms, were identified and formed a consistent group of B....
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Lecythidaceae; Neotropics; Taxonomy; Tropical rain forest; Wax.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100137

Intraspecific variation in seed size and light intensity affect seed germination and initial seedling growth of a tropical shrub
Provedor de dados: 39
Autores: Veloso,Aniele C. R.; Silva,Priscila S.; Siqueira,Wallison K.; Duarte,Karen L.R.; Gomes,Ingrid L. V.; Santos,Henrique T.; Fagundes,Marcilio.
ABSTRACT Seed germination and seedling performance are affected by environmental factors and seed traits. In this study we investigated the effects of seed size and light intensity on germinability and seedling development of Copaifera oblongifolia. A total of 225 seeds were individually weighed and sown in three germination trays composed of 75 cells each. Each tray was placed in a different germination chamber with controlled photoperiod, temperature and light intensity. Seed size showed a positive relationship with time required for seed germination, and seeds exposed to high light intensity required more time to germinate. Seed size did not affect germination percentage, but seeds sown under high light intensity had a lower germination percentage than...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Cerrado; Copaifera oblongifolia; Diversity conservation; Dominancy; Habitat invasion; Seed-seedling conflict.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400736

Population structure and fruit availability of the babassu palm ( Attalea speciosa Mart. ex Spreng) in human-dominated landscapes of the Northeast Region of Brazil
Provedor de dados: 39
Autores: Campos,Juliana Loureiro Almeida; Albuquerque,Ulysses Paulino; Peroni,Nivaldo; Araújo,Elcida de Lima.
ABSTRACT We studied the population structure and fruit availability of the babassu palm, Attalea speciosa, in three human-dominated landscapes located near a rural community in the region of Araripe, in the Northeast Region of Brazil, that were under intense fruit harvest. Fifty 10 x 10 m plots were randomly established in each of the three landscapes, and all individuals of A. speciosa within the plots were classified as seedlings, juveniles or adults, with the height of all adult individuals being measured. An additional 20 individuals were marked in each landscape, and the number of total bunches, fruits per bunch and bunches per palm tree were recorded. The populations of A. speciosa in the three landscapes exhibited an inverted J-shape plot, but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extractivism; Harvest; Landscape management; Non-timber forest products; Population ecology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200267

Elaiophores: their taxonomic distribution, morphology and functions
Provedor de dados: 39
Autores: Possobom,Clivia Carolina Fiorilo; Machado,Silvia Rodrigues.
ABSTRACT Elaiophores are floral glands that secrete non-volatile oils as a reward for their pollinators. Their secretions mediate a specialized interaction between oil-producing plants and a few species of oil-collecting bees - Apidae and Melittidae. The present review focuses on the morphological and functional aspects of these secretory structures. We also provide information on their chemistry and pollination ecology. Our survey is organized taxonomically among the plant families for which elaiophore occurrence has been confirmed -for the monocots, Iridaceae and Orchidaceae, and for the eudicots, Calceolariaceae, Cucurbitaceae, Krameriaceae, Malpighiaceae, Plantaginaceae, Primulaceae, Scrophulariaceae, Solanaceae and Stilbaceae. Most oil flowers are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asparagales; Bees; Cucurbitales; Ericales; Lamiales; Malpighiales; Oil flowers; Solanales; Zygophyllales.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300503

The taxonomic significance of seed morphology in the Passiflora subgenus Astrophea (Passifloraceae)
Provedor de dados: 39
Autores: Mezzonato-Pires,Ana Carolina; Mendonça,Cláudia Barbieri Ferreira; Milward-De-Azevedo,Michaele Alvim; Gonçalves-Esteves,Vania.
ABSTRACT The center of diversity for Passiflora subg. Astrophea is in low altitude areas of northern South America. The majority of species of this group are difficult to find in nature. Seed morphology was described in detail for 25 species of Passiflora subgenus Astrophea, a subgenus that until now did not exist. For morphological analysis, 20 seeds per species were measured for length, width and thickness, and the arithmetic means calculated. The seeds varied in length, width and thickness. Eight types of ornamentation were found. The margins varied among crestate, dentate, parted, entire and parted-crestate. The seed apex can be distinguished by the shape and position of the apical appendage. Seed shape varied among obovate, lanceolate, cordiform, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astrophea; Fruits; Morphological characters; Seeds; Systematics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100068

Different physiological responses under drought stress result in different recovery abilities of two tropical woody evergreen species
Provedor de dados: 39
Autores: Frosi,Gabriella; Harand,Wolfgang; Oliveira,Marciel Teixeira de; Pereira,Silvia; Cabral,Simone Pereira; Montenegro,Abelardo Antônio de Assunção; Santos,Mauro Guida.
ABSTRACT The effects of water deficit on physiological and biochemical variables of young plants of two tropical woody species, Pachira aquatica and Sterculia foetida, and their recovery abilities were measured. Leaf water potential, gas exchange and selected carbon metabolism components were measured in a greenhouse experiment with control, moderate and severe water deficit treatments. Under severe drought stress, gas exchange and chlorophyll fluorescence decreased in both species compared to their respective controls. After rehydration, P. aquatica and S. foetida showed a partial and full recovery of the measured variables, respectively. In addition, a decrease and an increase in photosynthetic pigments were observed for P. aquatica and S. foetida,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyll fluorescence; Climate changes; Gas exchange; Semiarid; Water deficit.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200153

Pericarp ontogeny of Tapirira guianensis Aubl. (Anacardiaceae) reveals a secretory endocarp in young stage
Provedor de dados: 39
Autores: Tölke,Elisabeth Emilia Augusta Dantas; Lacchia,Ana Paula Stechhahn; Demarco,Diego; Carmello-Guerreiro,Sandra Maria.
ABSTRACT Most species of Anacardiaceae have drupes containing secretory structures.. The substances produced by these structures may have importance to industry and folk medicine, and may even cause allergenic effects. This work describes the ontogeny of pericarp of Tapirira guianensis with an emphasis on the secretory structures present at different stages of development. Ovary and fruits in various stages of development were collected, fixed and processed for studies using light and scanning electron microscopy according to conventional techniques. Histochemical tests were employed to identify the major metabolites present in the tissues. The fruit is a drupe formed by exocarp, mesocarp containing secretory ducts and idioblasts, and endocarp with some...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cashew family; Drupe; Fruit; Mucilages; Secretory ducts.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300319

Allelopathic suppression by Conyza canadensis depends on the interaction between latitude and the degree of the plant’s invasion
Provedor de dados: 39
Autores: Wang,Congyan; Jiang,Kun; Zhou,Jiawei; Liu,Jun.
ABSTRACT Allelopathic suppression of the growth of co-occurring plant species in invaded ecosystems is an important factor in some plant invasions. This study uses leaf extracts of the invasive plant species Conyza canadensis to determine its allelopathic effects along a latitudinal gradient, and under different cover classes and degrees of invasion, on seed germination and growth of Lactuca sativa, a sensitive bioindicator of allelochemicals. The allelopathic effects of C. canadensis on seedling height, root length, seedling biomass, germination percentage, germination potential, germination index, germination rate index, and vigor index of L. sativa increased significantly with increasing latitude. A possible explanation is that the leaves of plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathic effects; Conyza canadensis; Invasive plant species; Lactuca sativa; Seed germination and growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200212

Pollen diversity in selected species of the tribe Chironieae (Gentianaceae Juss.) that occur in the Atlantic Forest, Brazil
Provedor de dados: 39
Autores: Sousa,Hian Carlos Ferreira de; Gonçalves-Esteves,Vania; Mendonça,Cláudia Barbieri Ferreira.
ABSTRACT Based on molecular data, the tribe Chironieae (Gentianaceae) is divided into three subtribes. This study aims to describe the pollen morphology of representatives of two of the three subtribes that occur in the Atlantic Forest in order to contribute to a better understanding of the palynology of these taxa and to clarify the taxonomy of the family: subtribe Chironiinae (Centaurium erythraea and Zygostigma australe) and subtribe Coutoubeinae (Coutoubea ramosa, C. spicata, Deianira chiquitiana, D. damazioi, D. erubescens, D. nervosa and D. pallescens). Botanical material was obtained from exsicates and treated by acetolysis for light microscopy. Pollen grains were measured and photomicrographed, and the results statistically analyzed. For SEM study,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chironiinae; Coutoubeinae; Morphology; Palynology; Pollen grains.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100120

Temporal evaluation of the Conservation Priority Index for medicinal plants
Provedor de dados: 39
Autores: Souza,André dos Santos; Albuquerque,Ulysses Paulino; Nascimento,André Luiz Borba do; Santoro,Flávia Rosa; Torres-Avilez,Wendy Marisol; Lucena,Reinaldo Farias Paiva de; Monteiro,Júlio Marcelino.
ABSTRACT We investigated, through a temporal comparison, the extraction of non-timber forest resources by quantitatively analyzing the Conservation Priority Index (CPI). The study focused on the Fulni-ô Indigenous Territory, in the municipality of Águas Belas, PE (Northeast Brazil), which is characterized by caatinga vegetation (seasonal dry forest). Information on the availability of the exploited resources and the reported use of the species were obtained from vegetation sampling and semi-structured interviews, respectively. Our results demonstrated a reduction in species richness overtime, which may be due to continued resource extraction in the area, and that some species with low densities were even more affected. The species reported as being at high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity conservation; Conservation Priority Index; Ethnobotany; Ethnoecology; Traditional ecological knowledge.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200169

Leaf glands of Banisteriopsis muricata (Malpighiaceae): distribution, secretion composition, anatomy and relationship to visitors
Provedor de dados: 39
Autores: Nery,Lays Araújo; Vieira,Milene Faria; Ventrella,Marília Contin.
ABSTRACT Leaf glands are common structures in Malpighiaceae and exhibit great morphological diversity, yet information on their anatomy, secretion and type of visitors remains scarce. The aim of this study was to describe the distribution, anatomical development and chemical and functional properties of leaf glands of Banisteriopsis muricata (Malpighiaceae). Leaves at different stages of development were collected and processed according to standard techniques for light and scanning electron microscopy. Secretion composition was determined by histochemical tests and test-strips, while gland funciton was determined by field observation of interactions with visitors. Leaf glands were located on the petiole and on the abaxial base of the leaf blade. The gland...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Ants; Extrafloral nectaries (EFNs); Histochemistry; Leaf glands; Nectar; Ontogeny.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300459

The flower anatomy of five species of Myrteae and its contribution to the taxonomy of Myrtaceae
Provedor de dados: 39
Autores: Martos,Luana; Galan,Adrielle Tayrine Oliveira Froemming; Souza,Luiz Antonio de; Mourão,Káthia Socorro Mathias.
ABSTRACT Considerable effort has been spent towards understanding the phylogeny of Myrteae, and based on the phylogenetic data presently available the traditional subdivision of Myrteae into three subtribes is not supported. The present paper aims to assess the usefulness of floral characters in distinguishing five species that represent five of the six South American clades of Myrteae (Myrtaceae). Floral buds and flowers of Campomanesia adamantium, Eugenia pitanga, Myrceugenia alpigena, Myrcia multiflora and Myrciaria cuspidata were collected from individual plants growing in the Cerrado (Brazilian/Central South American savanna). Among these species, the perianth of E. pitanga is the most distinct due to its vasculurization and pilosity. The hypanthium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomical characteristics; Myrtaceae; Floral vasculature; Flower; Phylogeny.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100042

Management techniques for the control of Melinis minutiflora P. Beauv. (molasses grass): ten years of research on an invasive grass species in the Brazilian Cerrado
Provedor de dados: 39
Autores: Martins,Carlos Romero; Hay,John Du Vall; Scaléa,Marcio; Malaquias,Juaci Vitória.
ABSTRACT The invasion of exotic species is considered to be a major threat to the preservation of biodiversity. In the Parque Nacional de Brasília (National Park of Brasília), the invasive Melinis minutiflora (molasses grass) occupies more than 10 % of the area of the park. The present, long-term, study compared two treatments of exposure to molasses grass: 1) fire and 2) integrated management (fire + herbicide sprays + manual removal). The aerial biomass of molasses grass in the experimental area initially represented ca. 55 % of the total aerial biomass, a percentage that apparently did not influence native plant species richness at this site. Fire alone was not sufficient to control molasses grass, which attained its pre-treatment biomass values after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fire; Glyphosate; Ground layer biomass and species richness; Protected areas; Recolonization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400546

Lectotypes for species of Passiflora L. (Passifloraceae) described by João Barbosa Rodrigues
Provedor de dados: 39
Autores: Mezzonato-Pires,Ana Carolina; Milward-de-Azevedo,and Michaele Alvim.
ABSTRACT During taxonomic review of the Brazilian species of the Passiflora subgenus Astrophea and P. subg Decaloba, six names published by the Brazilian botanist João Barbosa Rodrigues were found in need of discussion: Passiflora alliacea, P. amalocarpa, P. cabedelensis, P. hexagonocarpa, P. hydrophila and Tacsonia coccinea. The original illustrations are here designated as lectotypes for P. alliacea, P. amalocarpa, P. cabedelensis (a synonym of P. amalocarpa), P. hexagonocarpa, P. hydrophila (a synonym of P. costata) and Tacsonia coccinea (a synonym of P. spinosa).
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Astrophea; Decaloba; Nomenclature; Passifloraceae; Types.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100134

Composition, diversity and structure of vascular epiphytes in two contrasting Central Amazonian floodplain ecosystems
Provedor de dados: 39
Autores: Quaresma,Adriano C.; Piedade,Maria Teresa F.; Feitosa,Yuri Oliveira; Wittmann,Florian; Steege,Hans ter.
ABSTRACT Research focusing on assemblages of vascular epiphytes in the Amazon are scarce. This is especially true for Amazonian floodplain forests, for which only two previous studies have been published. We compared composition, richness and structure of epiphyte assemblages in white-water and black-water floodplains (várzea and igapó) in Central Amazonia in order to close knowledge gaps concerning the distribution and richness of epiphytes. We established sixteen 25x25 m plots in each forest type, and counted and identified all species of vascular epiphytes occurring on trees with a diameter at breast height (DBH) ≥10 cm. We observed a clear distinction in epiphytic species composition (r2=0.83, p=0.001) and diversity (t=3.24, P=0.003) between the two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Biodiversity; Floodplains; Igapó forests; Várzea forests.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400686

Antiherbivory defense mechanisms along an environmental gradient in restinga
Provedor de dados: 39
Autores: Silva,Maiara Matilde da; Boeger,Maria Regina Torres; Melo Júnior,João Carlos Ferreira de; Santos,Bruno Francisco Sant’Anna dos.
ABSTRACT Plant-herbivore interactions have directed the evolution of defense mechanisms in plants, which can vary intraspecifically according to environmental quality. This study evaluated variation in the production of antiherbivory defenses in plant species distributed along an environmental gradient of restinga. The study was performed in Parque Estadual Acaraí, state of Santa Catarina, Brazil. Three species of four plant formations with different abiotic conditions were selected for study. Specific leaf area; water, nitrogen and carbon content; and presence of phenols, tannins, lignin and alkaloids, were evaluated in leaves of ten plants per species per plant formation. The results indicated that Symphyopappus casarettoi possesses Low Nutritional...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal plain; Herbivore-plant interaction; Histochemistry; Parque Estadual Acaraí; Physical defense; Secondary metabolites.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400583

Updated angiosperm family tree for analyzing phylogenetic diversity and community structure
Provedor de dados: 39
Autores: Gastauer,Markus; Meira Neto,João Augusto Alves.
ABSTRACT The computation of phylogenetic diversity and phylogenetic community structure demands an accurately calibrated, high-resolution phylogeny, which reflects current knowledge regarding diversification within the group of interest. Herein we present the angiosperm phylogeny R20160415.new, which is based on the topology proposed by the Angiosperm Phylogeny Group IV, a recently released compilation of angiosperm diversification. R20160415.new is calibratable by different sets of recently published estimates of mean node ages. Its application for the computation of phylogenetic diversity and/or phylogenetic community structure is straightforward and ensures the inclusion of up-to-date information in user specific applications, as long as users are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Angiosperm diversification; APG IV; Community tree calibration; Megatrees; Phylogenetic topology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200191

Outer cell wall structure and the secretion mechanism of colleters of Bathysa nicholsonii K. Schum. (Rubiaceae)
Provedor de dados: 39
Autores: Miguel,Emilio de Castro; Pireda,Saulo; Barros,Claudia Franca; Zottich,Umberto; Gomes,Valdirene Moreira; Miguens,Flavio Costa; Cunha,Maura Da.
ABSTRACT Secretory structures are formed by many types of plants and are present on numerous different organs. Among the many types of known secretory structures, colleters are predominant on plants of the Rubiaceae. One remarkable characteristic of secretory tissues is the export of exudates; however, the precise mechanism involved in this process is still unclear. To better understand the mechanisms of exudate externalization it is necessary to understand the ultrastructure and dynamics of the outer cell wall of the secretory structures during the secretory process, and so we investigated these aspects of the colleters of Bathysa nicholsonii. The outer cell wall (OCW) exhibits multiple layers: a basal polysaccharide rich layer; a cuticular membrane,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colleters; Outer cell wall; Rubiaceae; Secretion accumulation site; Secretion mechanism; Secretory structures; Secretory tissues.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300411

A synopsis of Galianthe (Rubiaceae) in Rio Grande do Sul, Southern Brazil, and a new endemic species from Serra Geral
Provedor de dados: 39
Autores: Florentín,Javier Elías; Florentin,Mariela Nuñez; Cabral,Elsa Leonor.
ABSTRACT Thirteen species of the genus Galianthe have been recorded for state of Rio Grande do Sul, Brazil. The species are distributed among seven biomes, one of which contains all thirteen taxa-Subtropical Seasonal Forest. Herein a new endemic species, G. riograndensis J. Florentín &amp; E.L. Cabral, is described, illustrated and differentiated from all other species of the genus by having 3-4 verticillate leaves and a long bifid style. In addition, the pollen grain morphology and the seed micromorphology of the new species are described and illustrated, and the conservation status assessed according to IUCN criteria. Moreover, G. chodatiana is recorded for the first time from the state, and a lectotype for G. equisetoides is designated. Most of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Galianthe; Rubioideae; Southern Brazil; Spermacoceae; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400619

Spore germination, early development and some notes on the effects of in vitro culture medium on Frullania ericoides (Nees) Mont. (Frullaniaceae, Marchantiophyta)
Provedor de dados: 39
Autores: Silva-e-Costa,Juliana da Costa; Luizi-Ponzo,Andrea Pereira; Resende,Cristiano Ferrara de; Peixoto,Paulo Henrique Pereira.
ABSTRACT In bryophytes, establishment can occur by a sexual or asexual process, but the production of spores enables colonization of a wider range of habitats and substrates than can asexual propagules. Successful germination is critical for establishment in a new environment. This paper addresses germination and sporeling development in Frullania ericoides, a leafy liverwort species. Fresh spores were inoculated in vitro in different culture strengths of Knop’s nutrient solution (one-fourth strength, half strength, full strength, one and a half strength and double strength), in order to evaluate the effects of this solution on spore germination and on the development of external protonema. On the first assessment, spore germination was observed at all the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endosporic development; Knop’s medium; Liverworts; Nutrients; Protonema; Sporeling.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100019

Evidence of the effects of fire on branching and leaf development in cerrado trees
Provedor de dados: 39
Autores: Souza,João Paulo; Albino,Ana Lúcia S.; Prado,Carlos Henrique B. A.
ABSTRACT We discuss evidence of effects of an accidental fire on shoot growth and leaf development in six cerrado tree species with distinct leaf phenologies. Buds of all six species were marked before shoot and leaf emergence in the dry season. After fire, leaf and shoot growth were monitored weekly and specific leaf area (SLA) was determined. Shoot order was determined in the growing season. Evergreens and semideciduous woody species had rapid leaf and shoot growth and decreased leaf life span (LLS) after fire compared with published data for evergreens in cerrado areas without fire. On the other hand, Kielmeyera variabilis, a deciduous species, showed intense branching and produced two orders of shoots in one growing season. Fires promote rapid leaf and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disturbance; Leaf life span; Shoot growth; Specific leaf area; Shoot order.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400677

Resupinate Dimorphy, a novel pollination strategy in two-lipped flowers of Eplingiella (Lamiaceae)
Provedor de dados: 39
Autores: Harley,Raymond M.; Giulietti,Ana Maria; Abreu,Ivan Silva; Bitencourt,Cassia; Oliveira,Favizia F. de; Endress,Peter K.
ABSTRACT This work provides a summary of the typical floral structure of subtribe Hyptidinae (Lamiaceae), in which both style and stamens are declinate within or near the concave anterior corolla lobe. Cross-pollination is facilitated by protandry, acting in conjunction with the explosive release of the stamens and pollen. In contrast, we report that in the three species of the genus Eplingiella we found individuals with either resupinate or non-resupinate flowers, which represents a novel floral dimorphism. In these species of Eplingiella, the style occupies a position towards the posterior corolla lip and opposes the declinate stamens. Thus, in non-resupinate flowers the pollinating bee receives pollen on its ventral side and makes contact with the style...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Centris; Eplingiella; Hyptidinae; Lamiaceae; Resupinate dimorphy; Style position.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100102

Inter- and intra-population variability in physical dormancy along a precipitation gradient
Provedor de dados: 39
Autores: Ferreras,Ana E.; Zeballos,Sebastián R.; Funes,Guillermo.
ABSTRACT Physical dormancy enables plants that occur in temporally stochastic and harsh environments to survive; thus, within the distribution area of a species, the percentage of seeds with physical dormancy is expected to increase towards more arid and unpredictable areas. There have been no previous studies evaluating both inter and intra-population variability in physical dormancy along a precipitation gradient. The aim of this study was to determine the inter- and intra-population variability in physical dormancy of seeds of Vachellia aroma (Fabaceae) along a precipitation gradient. We collected mature fruits from four localities along a precipitation gradient in central Argentina for an imbibition experiment using controlled germination chambers....
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Fabaceae; Inter-population variability; Intra-population variability; Physical dormancy; Precipitation gradient; Vachellia aroma.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100141

Functional antagonism between nitrogen-fixing leguminous trees and calcicole-drought-tolerant trees in the Cerrado
Provedor de dados: 39
Autores: Meira-Neto,João Augusto Alves; Tolentino,Gláucia Soares; Silva,Maria Carolina Nunes Alves da; Neri,Andreza Viana; Gastauer,Markus; Magnago,Luiz Fernando Silva; Yuste,Jorge Curiel; Valladares,Fernando.
ABSTRACT The Cerrado is the largest savanna of South America and its physiognomy varies from savanna to woodlands. There are two main types of woodlands in the Cerrado: dystrophic woodlands, dominated by N-fixing leguminous trees (LEG), and mesotrophic woodlands dominated by non-leguminous drought-tolerant trees (DRY), which are calcicoles and sensitive to Al3+. The working hypothesis is that LEG and DRY are functional antagonists in terms of the acidification/alkalization processes involving different forms of inorganic nitrogen and pH, Ca2+ and Al3+ in soil. Tree species basal area and soil properties were used to investigate the antagonism between LEG and DRY using generalized linear models. The results suggest that LEG and DRY are antagonists. The LEG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aluminum toxicity; Calcicole species; Dry forests; Ecosystem function; Nitrogen fixing; Tropical savanna; Woodlands.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100011

Flower and floral trichome morphology of species of Dyckia Schult. f. (Bromeliaceae, Pitcairnioideae), and their importance to species characterization and genus taxonomy
Provedor de dados: 39
Autores: Carvalho,Jordano Dorval Tavares de; Essi,Liliana; Oliveira,João Marcelo Santos de.
ABSTRACT This paper presents a morphological analysis of the flower and floral trichomes of three rare species of Dyckia: Dyckia ibicuiensis, D. polyclada and D. racinae. Flowers at anthesis were collected from natural populations and subjected to morphometric and microscopic analysis. Among the most representative features for Dyckia are: morphometrics of individual floral parts; the general configuration of the androecium and gynoecium; the degree of fusion of the stigmatic lobes; the morphology of the ovules, especially in relation to the chalazal appendix; and the presence and constitution of peltate trichomes in the perianth, which exhibited a polymorphism not previously reported for Dyckia. The characters were effective at describing each species,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Androecium; Dyckia; Encholirium; Floral morphology; Gynoecium; Peltate trichome; Perianth; Pitcairnioideae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100029

Abiotic environmental conditions for germination and development of gametophytes of Cyathea phalerata Mart. (Cyatheaceae)
Provedor de dados: 39
Autores: Marcon,Catiuscia; Silveira,Tatieli; Schmitt,Jairo Lizandro; Droste,Annette.
ABSTRACT In order to successfully establish themselves in their natural environment, ferns need habitats with abiotic conditions that are suitable for spore germination and gametophyte development. The objective of this study was to assess the influence of abiotic factors on the initial development of Cyathea phalerata cultivated in vitro. Spore germination and gametophyte development were assessed under varying conditions of surface sterilization, pH, temperature and photoperiod. Exogenous contamination was eliminated by sterilizing spores with 2.5 % NaClO for 15 min and sowing them into a culture medium supplemented with nystatin. Spores germinated at all pHs tested. Gametophytic development was faster in acidic pHs. Cultures at 25 °C exhibited the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic factors; Arborescent ferns; In vitro propagation; Reproduction; Spores.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100058

Beyond pollination: diversity of secretory structures during flower development in different legume lineages
Provedor de dados: 39
Autores: Barros,Thais Cury De; Marinho,Cristina Ribeiro; Pedersoli,Giseli Donizete; Paulino,Juliana Vilella; Teixeira,Simone Pádua.
ABSTRACT Floral secretory structures are usually associated with the attraction of pollinators, but may also play an important role in the mechanisms of plant protection. This study aimed to show the diversity of secretory structures present in the developing flowers of 15 legume species belonging to different clades and to associate them with functions other than the pollinator attraction. Buds, flowers and developing axis of inflorescence were processed for surface, histological, and ultrastructural analyses. The species investigated displayed a wide diversity of secretory structures in developing flowers such as phenolic cells and/or tissues, mucilaginous cells, secretory cavities, secretory trichomes and colleters. Each type of secretory structure...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Colleter; Fabaceae; Gland; Idioblast; Leguminosae; Morphology; Mucilage cells; Secretory cavity; Secretory trichome.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300358

The role of terrestrial bromeliads in determining the spatial organization of plant life forms in a tropical coastal forest
Provedor de dados: 39
Autores: Lopes,Celio M.; Misaki,Flora; Santos,Karina; Evangelista,Carlos A. P.; Carrijo,Tatiana T.; Garbin,Mário L.
ABSTRACT The interplay between plant-plant interactions and light heterogeneity in the understory of tropical forests has rarely been examined. We aimed to identify the relative importance of the understory light environment and terrestrial bromeliads in explaining the abundance and spatial organization of different plant life forms along a coastal forest gradient from seashore inland in southeastern Brazil. We estimated the abundance of various life forms (herbs, woody plants, bromeliads, climbers, and palms) and the degree of light availability using hemispherical photographs in 165 plots (1 m2) within a 1.75 ha site. We used ordination methods, partial redundancy analysis (pRDA), spatial filtering using Moran’s eigenvector mapping, and Moran’s I...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community assembly; Hemispherical photographs; Herb layer; Shrub layer; Spatial patterns.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100084

Post-fire resprouting strategies of woody vegetation in the Brazilian savanna
Provedor de dados: 39
Autores: Souchie,Fabiane Furlaneto; Pinto,Jose Roberto Rodrigues; Lenza,Eddie; Gomes,Letícia; Maracahipes-Santos,Leonardo; Silvério,Divino Vicente.
ABSTRACT Post-fire response by vegetation may reflect the severity of the damage suffered, but we still know little about the species-specific nature of responses to fire or their predictors. Here, we evaluated 26 woody species before and after a fire event in an Cerrado sensu stricto area (typical Brazilian savanna-type) in order to evaluate mortality rates and the type of resprouting (epigeal, hypogeal or epigeal + hypogeal). We evaluated the relative importance of stem diameter, height, and bark thickness as predictors of the type of post-fire resprouting, using a sequential logistic regression model (SLRM). Mortality was 4 %, while epigeal resprouting was recorded in 57 % of the individuals, hypogeal resprouting was recorded in 24 %, and epigeal +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bark thickness; Cerrado sensu stricto; Disturbance; Fire; Resilience.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200260

Effects of salinity on the physiology of the red macroalga, Acanthophora spicifera (Rhodophyta, Ceramiales)
Provedor de dados: 39
Autores: Pereira,Débora Tomazi; Simioni,Carmen; Filipin,Elisa Poltronieri; Bouvie,Fernanda; Ramlov,Fernanda; Maraschin,Marcelo; Bouzon,Zenilda Laurita; Schmidt,Éder Carlos.
ABSTRACT Salinity is an important abiotic factor since it is responsible for the local and/or regional distribution of algae. In coastal regions, salinity changes with prevailing winds, precipitation and tide, and particularly in extreme intertidal conditions. Acanthophora spicifera is a red seaweed that occurs in the supratidal region in which changes in abiotic conditions occur frequently. This study evaluated the effects of salinity on the metabolism and morphology of A. spicifera. Algae were acclimatized under culture conditions with sterilized seawater for seven days. Experiments used different salinities (15 to 50 psu) for seven days, followed by metabolic analyses. This study demonstrates that extreme salinities affect physiological parameters of A....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acanthophora spicifera; Microscopy; Morphology; Physiology; Salinity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400555

Paleodistribution of Neotropical species of Erythroxylum (Erythroxylaceae) in humid and dry environments
Provedor de dados: 39
Autores: Cordeiro,Luciana Silva; Araújo,Francisca Soares de; Koch,Ingrid; Simões,André Olmos; Martins,Fernando Roberto; Loiola,Maria Iracema Bezerra.
ABSTRACT Variation in environmental conditions during the Quaternary period served as important filters for the maintenance of vegetation types and for determining the composition of the current biota. We analyzed oscillations in the distributions of different vegetation types in Brazil during the Quaternary period using species of the genus Erythroxylum (Erythroxylaceae) because of the vast heterogeneity of habitats in which they occur. We hypothesized that it would be possible to observe geographically distinct distribution patterns of species of Erythroxylum as a result of the climate changes that occurred during the last glacial maximum (LGM) and in the last interglacial period (LIG) of the Pleistocene. We used bioclimatic variables to elaborate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Modeling; Paleoclimates; Vegetation; Pleistocene.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400645

Appendicular origin and structure of the spur of Vochysiaceae flowers
Provedor de dados: 39
Autores: Carmo-Oliveira,Renata; Oliveira,Paulo E.; Morretes,Berta Lange de.
ABSTRACT Floral nectaries are linked with animal pollinators and floral specialization, characterizing some plant groups, such as the mostly Neotropical Vochysiaceae. The phylogeny of these plants has been revised based on molecular data, but their conspicuous spurs were mostly neglected. The appendicular or receptacular origin of these spurs has been discussed but without ontogenetic or anatomical study, and the association between spur structure and pollination systems was never assessed. We studied the spurs of species of four genera of Cerrado Vochysiaceae (tribe Vochysieae), documenting their vascularization and comparing their structure to previously described pollination systems. The spur structure was roughly similar among species, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Callisthene; Nectar; Nectarostomata; Plant anatomy; Qualea; Salvertia; Vochysia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300433

Spore germination and young gametophyte development of the endemic Brazilian hornwort Notothylas vitalii Udar &amp;amp; Singh (Notothyladaceae - Anthocerotophyta), with insights into sporeling evolution
Provedor de dados: 39
Autores: Oliveira,Bárbara Azevedo; Pereira,Anna Flora de Novaes; Pôrto,Kátia Cavalcanti; Maciel-Silva,Adaíses Simone.
ABSTRACT Notothylas vitalii is an endemic Brazilian hornwort species, easily identified by the absence of pseudoelaters and columella, and the presence of yellow spores. Plant material was collected in Recife, Brazil, and the spores were sown onto Knop’s medium, germinating after thirty days only with the presence of light. Germination occurred outside the exospore, and only after the walls had separated into three or four sections did a globose sporeling initiate its development. Following longitudinal and transversal divisions, the initial loose mass of cells became a thalloid gametophyte, subsequently developing into a rosette-like juvenile thallus with flattened lobes. Additional information concerning sporeling types in key genera of hornworts, such...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bryophytes; Exosporous germination; Phylogeny; Sporeling development; Yellow spores.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200313

A reduced, yet functional, nectary disk integrates a complex system of floral nectar secretion in the genus Zeyheria (Bignoniaceae)
Provedor de dados: 39
Autores: Machado,Silvia Rodrigues; Souza,Camila Vaz de; Guimarães,and Elza.
ABSTRACT The genus Zeyheria (Bignoniaceae) comprises only two species, both of which have been described as possessing a reduced and non-functional nectary disk. Despite the importance of this evolutionary change in the floral nectary, these functional assumptions have been based on disk size and on the distribution, abundance and histochemistry of corolla-borne trichomes. By combining methods on light and electron microscopy, here we investigated the functionality of the reduced nectary disk and describe all of the tissues and structures of the nectar chamber in order to determine the sites of floral nectar secretion in both Zeyheria species. . Our data find the floral nectary traits of both species to be very similar, although differing in their cellular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bignoniaceae; Floral nectary; Functional anatomy; Histochemistry; Ultrastructure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300344

Phylogenetic community structure reveals differences in plant community assembly of an oligotrophic white-sand ecosystem from the Brazilian Atlantic Forest
Provedor de dados: 39
Autores: Gastauer,Markus; Saporetti-Junior,Amílcar W.; Valladares,Fernando; Meira-Neto,João A. A.
ABSTRACT Mussununga, an oligotrophic sandy savanna ecosystem, comprises distinct physiognomies along fire, water and nutrient availability gradients. Grasslands and woodlands are constrained at the opposite poles of these gradients, with grasslands occurring in areas with poorer soils and higher levels of both water-stress and fire intensity. According to the stress-dominance hypothesis, one might expect the importance of competition for community assembly to increase from grasslands to woodlands. Assuming conservation of ecological niches within evolutionary lineages, this should increase phylogenetic overdispersion from grasslands towards woodlands. To test this, we calculated phylogenetic diversity and community structure using different null models as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competition; Environmental filters; Mussunungas; Savanna woodlands; Stress-dominance hypothesis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400531

Pollen morphology of Waltheria L. (Malvaceae-Byttnerioideae) from Bahia, Brazil
Provedor de dados: 39
Autores: Silveira Júnior,Cristiano Eduardo Amaral; Lima,Luciene Cristina Lima e; Saba,Marileide Dias.
ABSTRACT Waltheria encompasses about 60 species distributed in Brazil and Mexico. To improve the palynology of the genus, we analyzed 14 species occurring in the Brazilian State of Bahia. Pollen grains were acetolyzed and examined using light microscopy and scanning electron microscopy. Non-acetolyzed pollen grains were viewed by transmission electron microscopy. The results revealed two general pollen types based on exine ornamentation, such as reticulate and echinate, which are distinct with regard to (1) size and shape, (2) apertural type and number, (3) relative length of ectoapertures, and (4) thickening of the nexine compared to the sexine. An ultrastructural analysis of the pollen wall revealed a continuous foot layer and a compact and discontinuous...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heterostyly; Palynology; Ultrastructure; Taxonomy; Waltheria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400597

Radiographic image analysis of Anacardium othonianum Rizz (anacardiaceae) achenes subjected to desiccation
Provedor de dados: 1
Autores: Silva, Lílian Abadia da; Sales, Juliana de Fátima; Neves, José Maria Gomes; Santos, Heloísa Oliveira dos; Silva, Glicélia Pereira.
Studies evaluating the internal morphology and seed quality of native species are essential for successful conservation programs. Our aim was to verify the efficiency of X-ray imagery in evaluating cashew-tree-of-the-cerrado (Anacardium othonianum Rizz.) achene viability after desiccation. The achenes were collected at 12% water content (w.b.) and dried in silica gel until they reached 10, 8, 6, and 4% (w.b.). The fruit morphology and the quality of the seeds were evaluated by X-ray test together with vigor, electrical conductivity and emergence tests. Achenes with different water contents were exposed to an X-ray machine at 18 kV for 11 s and were thereafter submitted to emergence tests. The images were analyzed, and the achenes were classified based on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.03-2 X-Ray; Fruit tree; Cerrado; Desiccation; Internal morphology. Produção e Beneficiamento de Sementes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32484

Genetic dissimilarity among sweet potato genotypes using morphological and molecular descriptors
Provedor de dados: 1
Autores: Andrade, Elisângela Knoblauch Viega de; Andrade júnior, Valter Carvalho de; Laia, Marcelo Luiz de; Fernandes, José Sebastião Cunha; Oliveira, Altino Junior Mendes; Azevedo, Alcinei Mistico.
 This study aimed to evaluate the genetic dissimilarity among sweet potato genotypes using morphological and molecular descriptors. The experiment was conducted in the Olericulture Sector at Federal University of Jequitinhonha and Mucuri Valleys (UFVJM) and evaluated 60 sweet potato genotypes. For morphological characterization, 24 descriptors were used. For molecular characterization, 11 microsatellite primers specific for sweet potatoes were used, obtaining 210 polymorphic bands. Morphological and molecular diversity was obtained by dissimilarity matrices based on the coefficient of simple matching and the Jaccard index for morphological and molecular data, respectively. From these matrices, dendrograms were built. There is a large amount of genetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fitotecnia Ipomoea batatas (L.) Lam.; Morphological markers; Microsatellites; Genetic diversity; Germplasm bank. Melhoramento genético de plantas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32847

Forage yield and quality of marandugrass fertigated with treated sewage wastewater and mineral fertilizer
Provedor de dados: 1
Autores: Santos, Gilmar Oliveira; Faria, Rogério Teixeira de; Rodriguês, Gilberto Aparecido; Dantas, Geffson de Figueredo; Dalri, Alexandre Barcellos; Palaretti, Luiz Fabiano.
The high consumption of water in irrigated agriculture and lack of alternative water sources make reusing sewage water a highly promising option for irrigation. This paper is aimed at evaluating Brachiaria brizantha cv. Marandu forage quality and yield when fertigated with treated sewage wastewater (TSW) and mineral fertilizer, in the 2013 and 2014 crop years in Jaboticabal, São Paulo State, Brazil. A homogeneous water depth was applied using a triple-line sprinkling irrigation system under a gradual TSW application, using the following TSW and water ratios: E5 = 1.0; E4 = 0.87; E3 = 0.6; E2 = 0.31, E1 = 0.11, and E0 = 0.0. Annual biomass yield increased with the TSW application, ranging from 31.3 to 47.4 Mg ha-1 in 2013 and from 25.7 to 56.9Mg ha-1 in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.03.02.00-0 wastewater; Irrigation; Pasture; Forage quality. Engenharia de Água e Solo.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32828

Effect of liming on micronutrient availability to soybean grown in soil under different lengths of time under no tillage
Provedor de dados: 1
Autores: Moreira, Silvino Guimarães; Prochnow, Luís Ignácio; Pauletti, Volnei; Silva, Bruno Montoani; Kiehl, Jorge de Castro; Silva, Carine Gregório Machado.
The effect of liming on the availability of micronutrients to soybean cultivated during different numbers of years under no tillage (NT) was investigated. The treatments consisted of the number of years under NT (three, six, and nine years) and five rates of lime (0, 33, 67 and 100% of the amount calculated to raise soil base saturation to 70%) broadcast on soil surface plus the rate of 100% broadcast with incorporation in the 0-0.20 m layer of a clayey Red Oxisol. Soil and leaf samples were collected at two vegetative stages of the crop (vegetative V4 and blossoming R2). The soil was sampled at depths of 0-0.05, 0.05-0.10, 0.10-0.20, and 0.20-0.30 m. Surface liming had little effect on extractable soil micronutrient and nutrient concentrations in soybean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Copper; Iron; Manganese; Zinc; No till Fertilidade do solo.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30691

Thermodymnamic properties of crambe fruits
Provedor de dados: 1
Autores: Oliveira, Daniel Emanuel Cabral de; Resende, Osvaldo; Costa, Lílian Moreira; Silva, Hellismar Wakson da.
 This study aimed to determine and evaluate the thermodynamic properties of crambe fruit at different equilibrium moisture contents. The dynamic-gravimetric method was used to collect experimental data. Crambe fruits with an initial moisture content of approximately 26% db (dry basis) were used. The thin-layer desorption of the product was conducted at different controlled temperatures (25, 30, 35, 40, and 45°C) and at water activity levels ranging from 0.10 to 0.89 until the product reached the equilibrium moisture content at the specified air condition. In conclusion, the thermodynamic properties of crambe fruit are affected by temperature and moisture content. The isokinetic theory is valid for the desorption process, which is controlled by enthalpy,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.03.03.00-7 Crambe abyssinica; Enthalpy; Entropy; Gibbs free energy; Enharia de Processamento de Produtos Agrícolas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32516

Genetic admixture in species of Conyza (Asteraceae) as revealed by microsatellite markers
Provedor de dados: 1
Autores: Marochio, Carlos Alexandre; Bevilaqua, Maycon Rodrigo Ruiz; Takano, Hudson Kagueyama; Mangolim, Claudete Aparecida; Oliveira Junior, Rubem Silvério de; Machado, Maria de Fátima Pires Silva.
The distinction among Conyza canadensis, C. bonariensis, and C. sumatrensis is a challenge for weed science. In the current study, primers for microsatellite (SSR) loci were used to investigate the molecular divergence among the three species, the genetic structure of the populations at the molecular level and the level of genetic admixture among Conyza plants from southern Brazil. Twelve primers amplified well-defined DNA segments for all 88 samples of the three Conyza species. The estimated proportion of SSR polymorphic loci, number of alleles, and mean expected heterozygosity were higher in samples of C. bonariensis than in samples of C. sumatrensis or C. canadensis. Conyza canadensis was the species with the lowest molecular diversity. High genetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.07-5 horseweed; Molecular divergence; SSR loci. Matologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32947

Temporal stability of soil moisture under effect of three spacings in a eucalyptus stand
Provedor de dados: 1
Autores: Melo Neto, José de Oliveira; de Mello, Carlos Rogério; Silva, Antônio Marciano da; de Mello, José Márcio; Viola, Marcelo Ribeiro; Yanagi, Sílvia de Nazaré Monteiro.
Soil moisture temporal variability is an important concept in understanding forest management. The objective of this study was to analyse the effect of planting density on soil profile moisture in a clonal Eucalyptus plantation. Soil moisture was observed every 15 days at 25 points distributed throughout the eucalyptus stand between November 2013 and October 2015 to characterize the moisture according to the following three types of spacings: 3 x 2, 3 x 3, and 3 x 5 m. At each point, the 0 - 10, 10 - 20, 20 - 30, 30 – 40, and 60 - 100 cm layers were evaluated using a Profile Probe PR2 model. Soil moisture showed high spatial variability in the 0 - 10 cm layer, whereas from 30 to 100 cm deep, the moisture tended to become more homogeneous throughout the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.02.01.07-7 planting density; Oxisols; Water storage in the soil profile; Minas Gerais; Solos Florestais.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32656

Prediction of genetic gains by selection indexes and REML/BLUP methodology in a population of sour passion fruit under recurrent selection
Provedor de dados: 1
Autores: Silva, Fernando Higino de Lima e; Viana, Alexandre Pio; Freitas, Jôsie Cloviane de Oliveira; Santos, Eileen Azevedo; Rodrigues, Daniele Lima; Amaral Junior, Antonio Teixeira do.
Breeding programmes must be improved to accelerate the development of new cultivars due to the commercial importance of passion fruit. This study compared four selection indexes and the REML/BLUP methodology in an assessment of predicted genetic gains in the traits of interest. A total of 81 full-sib progenies derived from the third cycle of recurrent selection were assessed for one harvest in one environment. The experiment was arranged in a randomized complete block design with five plants per plot. The following traits were assessed: number of fruits, total yield, fruit mass, fruit longitudinal diameter, fruit transverse diameter, fruit pulp percentage, shell thickness and content of soluble solids. The Mulamba &amp; Mock index produced the best results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mixed models; Passiflora edulis Sims; Predicted genotypic values; Simultaneous selection.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32554

Feeding habits of Carabidae (Coleoptera) associated with herbaceous plants and the phenology of coloured cotton
Provedor de dados: 1
Autores: Matta, Danilo Henrique da; Cividanes, Francisco Jorge; Silva, Robson José da; Batista, Mariana Nardin; Otuka, Alessandra Karina; Correia, Ezequias Teófilo; Matos, Sidnéia Terezinha Soares de.
The carabids (Coleoptera: Carabidae) are recognized as polyphagous predators and important natural enemies of insect pests. However, little is known about the feeding habits of these beetles. In this work, we determine the types of food content in the digestive tracts of nine species of Carabidae associated with herbaceous plants and different growth stages of coloured cotton. The food contents were evaluated for beetles associated with the coloured cotton cv. BRS verde, Gossypium hirsutum L. latifolium Hutch., adjacent to weed plants and the flowering herbaceous plants (FHPs) Lobularia maritima (L.), Tagetes erecta L., and Fagopyrum esculentum Moench. The digestive tract analysis indicated various types of diets and related arthropods for Abaris...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fitossainidade e Entomologia Agrícola diet; Habitat manipulation; Conservative biological control; Predator. Agronomia e Entomologia Agrícola.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32593

Genetic variability and progeny selection of peach palm via mixed models (REML / BLUP)
Provedor de dados: 1
Autores: Rodrigues, Haroldo Silva; Cruz, Cosme Damião; Macêdo, Jeferson Luis Vasconcelos de; Resende, Marcos Deon Vilela de; Lopes, Ricardo; Borém, Aluízio.
Heart of palm harvesting and exploitation has reduced the natural reserves of açaí and juçara; hence, the peach palm is an excellent option as source of heart of palm that can reduce the pressure on these two species. The peach palm has high tillering and no post-harvest oxidation. An experiment in a randomized block design with 72 progenies of peach palm, 36 replications and a single tree plot was performed for five years at the experimental field of Embrapa in the Western Amazon. Genetic parameters were estimated using two mixed models, one based on progeny means and the second on joint information from crops. A repeatability analysis, genotype selection, and progeny selection were performed; the Mulamba and Mock selection index was determined; and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.05-9 heart of palm; Perennial breeding; Amazon. Melhoramento Vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32495

Modeling the incidence of citrus canker in leaves of the sweet orange variety ‘Pera’
Provedor de dados: 1
Autores: Pompeu, Danielle da Silva; Guedes, Terezinha Aparecida; Janeiro, Vanderly; Gonçalves-Zuliane, Aline Maria Orbolato; Nunes, William Mario de Carvalho; Carneiro, José Walter Pedroza.
Citrus canker, caused by the bacterium Xanthomonas citri subsp. citri, is one of the most important diseases of citrus. The use of resistant genotypes plays an important role in the management and control of the disease and is the most environmentally sustainable approach to disease control. Citrus canker incidence was recorded in an experiment on nine genotypes of the sweet orange variety ‘Pera’ grafted on four rootstocks. The experiment was started in 2010 and the incidence of citrus canker on the leaves was recorded on a quarterly basis. The incidence data from the experiment were analyzed using a zero-inflated Beta regression model (RBIZ), which is the appropriate method to describe data with large numbers of zeros. Based on the residual analysis, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.00.00.00-4; 5.01.02.00-1; 1.00.00.00-3; 1.02.03.00-1 zero-inflated Beta distribution; Mixture models; Inflated Beta regression model; Modeling proportions Fitossanidade; Probabilidade e Estatística Aplicadas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28535

Salinity reduces carbon assimilation and the harvest index of cassava plants (Manihot esculenta Crantz)
Provedor de dados: 1
Autores: Cruz, Jailson Lopes; Coelho Filho, Mauricio Antonio; Coelho, Eugenio Ferreira; Santos, Andrade Alves dos.
 This study was developed to evaluate the effects of salinity on the growth and gas exchange of cassava plants, cultivar Verdinha. The four concentrations of NaCl (mM) were as follows: 0, 20, 40, and 60. Under salinity, the lowest concentration of Na+ ions was observed in the tuberous roots; however, the dry matter of tuberous roots was reduced with an application of just 20 mM NaCl. The harvest index was reduced 50% with the highest salt concentration. Salinity reduced carbon assimilation (A), stomatal conductance (gs), transpiration, and the instantaneous water use efficiency. The correlation between gs and A was high and positive, showing that stomatal movement was one of the responsible for the lower A. Under salt stress, there was an increase in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.06-7 photosynthesis; Dry matter; Water use efficiency; Harvest index; Root:shoot ratio; Salt stress. fisiologia de plantas cultivadas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32952

Successive mini-cuttings collection in Piptocarpha angustifolia mini-stumps: effects on maturation, adventitious root induction and root vigor
Provedor de dados: 1
Autores: Stuepp, Carlos André; Wendling, Ivar; Koehler, Henrique Soares; Zuffellato-Ribas, Katia Christina.
The low percentage of seed germination and adventitious root induction in cuttings of Piptocarpha angustifolia has limited its silvicultural use. Thus, we studied the effect of tissue maturation on successive collections of mini-cuttings grown in a semi-hydroponic system. Likewise, we evaluated potential multiplication via the mini-cutting technique by assessing the survival and productivity of mini-stumps as well as the formation of adventitious roots and the root vigor. We made 32 sprout collections during two years in a clonal mini-garden. From these collections, mini-cutting experiments were installed throughout several seasons. Mini-cuttings of 8±1 cm long were prepared, planted in boxes with vermiculite and carbonized rice husk (1:1 v/v) and placed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.03.00-9; 2.03.03.02-5; 5.01.00.00-9; 5.01.03.04-0; 5.01.03.06-7; 5.02.01.00-0 juvenility; Multiplication rate; Ontogenetic age; Root induction; Vegetative propagation. Ciências Agrárias.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/31059

Genetic parameter estimates and identification of superior white maize populations
Provedor de dados: 1
Autores: Rovaris, Sara Regina Silvestrin; Oliveira, André Luís Bombonato de; Sawazaki, Eduardo; Gallo, Paulo Boller; Paterniani, Maria Elisa Ayres Guidetti Zagatto.
In Brazil, there is a shortage of white maize cultivars and genetic studies for special maize breeding programs. This study aimed to identify populations and promising hybrid white maize for main agronomic traits and grits processing and to estimate the genetic parameters of parents and heterosis. In the 2012/13 growing season, fifteen hybrids were obtained by complete diallel crosses, and six parental and commercial check varieties were evaluated for: female flowering (FF), ear height (EH), grain yield (GY), ear length (EL), volumetric mass (VM) and grits processing (GP) in two locations in São Paulo State, Campinas and Mococa, using a randomized block design. Analyses of variance were carried out, and diallel crosses were performed using the Gardner and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Complete diallel; Gardner and Eberhart; Grits production. Melhoramento genético de plantas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32517

Anticipated selection for intrapopulation breeding of passion fruit
Provedor de dados: 1
Autores: Cavalcante, Natan Ramos; Krause, Willian; Viana, Alexandre Pio; Silva, Celice Alexandre; Porto, Keithi Karla Xavier; Martinez, Roberto Antonio Savelli.
 The aim of this work was to verify the efficiency of the anticipated selection of superior plants in intrapopulation breeding of passion fruit. The experiment was conducted at the Mato Grosso State University experimental area. Eight populations were evaluated. Planting was carried out in August 2010 following the randomized blocks experimental design, with ten repeats and ten plants per plot. The production characteristics of mass and number of fruits were evaluated from data obtained from two cultivation periods, the first year and the full two-year cycle of culture. Estimates of genetic parameters indicate the possibility of selection gains. The accuracies of fruit production, fruit number and fruit mass characteristics had high magnitude, independent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia; Genética e melhoramento selection gain; Passiflora edulis Sims; Productivity. Melhoramento vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/31022

Fertilization with nitrogen and potassium in banana cultivars ‘Grand Naine’, ‘FHIA 17’ and ‘Nanicão IAC 2001’ cultivated in Ribeira Valley, São Paulo State, Brazil
Provedor de dados: 1
Autores: Nomura, Edson Shigueaki; Cuquel, Francine Lorena; Damatto Junior, Erval Rafael; Fuzitani, Eduardo Jun; Borges, Ana Lúcia.
 The ‘Grand Naine’ banana cultivar is grown around the world, but it is susceptible to black Sigatoka fungus. The ‘FHIA 17’ and ‘Nanicão IAC 2001’ cultivars have the potential to replace susceptible cultivars, but there is little information about their nitrogen and potassium nutritional requirements. This study aimed to identify the best fertilizer recommendation with N and K for banana cultivars ‘FHIA 17’, ‘Nanicão IAC 2001’, and ‘Grand Naine’. The applied fertilizer levels with N and K2O in two production cycles were as follows: NK0, without fertilization; NK1, 175 N and 285 kg K2O ha-1 year-1; NK2, 350 N and 570 kg K2O ha-1 year-1; and NK 3, 525 N and 855 kg K2O ha-1 year-1. It was concluded that the N and K fertilization levels influenced most of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tecnologia e Inovação para Agropecuária nutrição; Melhoramento genético; Musa spp. Fruticultura; Nutrição de planta.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32919

Physicochemical characterization, antioxidant activity and total phenolic content in 'Gala' apples subjected to different UV-C radiation doses
Provedor de dados: 1
Autores: Dias, Thaís Gabrielle; Vilas Boas, Ana Carolina; Junqueira, Maria Beatriz Affonso; Lima, Luiz Carlos de Oliveira.
UV-C radiation is a food preservation method aimed to extend the life of the product, inactivate microorganisms, and stimulate the synthesis of phenolic compounds. This study aimed to physicochemically characterize and evaluate the antioxidant activity and phenolic content of ‘Gala’ apples subjected to different UV-C radiation doses.The fruits were harvested, sanitized, selected and inserted into a UV-C radiation chamber, and different radiation doses were applied as follows:0 KJ m-2 (0 min.), 0.68 KJ m-2 (2 minutes),2.73 KJ m-2 (4 minutes), and 4.10 KJ m-2 (6 minutes). The apples were stored for 120 days at 5 ± 1°C and analyzed after 0, 30, 60, 90, and 120 days of storage. Radiation doses had no influence on parameters, such as weight loss, firmness and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus sp.; Preservation; Quality; Bioactive compounds.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30979

Morphoanatomy and physiology of Pouteria gardneriana Radlk plantlets grown in vitro at varied photosynthetic photon flux densities
Provedor de dados: 1
Autores: Leite, Mariluza Silva; Silva, Fabiano Guimarães; Assis, Elisvane Silva; Rubio Neto, Aurélio; Mendes, Giselle Camargo; Rosa, Márcio.
Micropropagation is an important tool for the multiplication of native Cerrado species. However, understanding the responses of these species under in vitro culture conditions is still incomplete. Thus, the present study aimed to analyze the growth, anatomical behavior and physiology of Pouteria gardneriana cultivated in vitro under photoautotrophic conditions. Nodal segments were cultured at photosynthetic photon flux densities (PPFD) of 75, 100 and 150 µmol m-2 s-1 in culture medium MS 50% solidified with 3.5 g L-1 of agar and 2.0 g L-1 of activated charcoal, in the absence and presence of 30 g L-1 of sucrose. After 60 days of in vitro culture, the P. gardneriana plantlets only regenerated when sucrose was present in the culture medium. Higher fresh and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fitotecnia Cerrado; Photoautotrophic; Sapotaceae Produção de Mudas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32515

Methodology for rainwater reservoir dimensioning: a probabilistic approach
Provedor de dados: 1
Autores: Wolff, Wagner; Duarte, Sergio Nascimento; Soccol, Olívio José; Rodrigues, Lineu Neiva; Fernandes, Rafael Dreux Miranda.
The aim of this study was to propose a new methodology for reservoir rainwater dimensioning based on probabilistic modeling. Eucalyptus seedlings grown in a greenhouse were used to obtain a hypothetical water demand. Meteorological data were used to estimate the demand (evapotranspiration) and offer (rainfall over the greenhouse coverage). The probability distribution of Wakeby presented the best fit for the rainfall data; therefore, a Wakeby distribution was used to model the flow-duration curve of the greenhouse coverage. For a payback period (T) of 10 years of surplus water demand and water supply deficit, a reservoir with 13.60 m³ was obtained. The proposed methodology combined the simultaneous occurrence of the events to enable the scaling out of a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wakeby distribution; Irrigation; Sustainable practices; Water resources Irrigation.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32564

Antioxidant activity and total phenol content of blackberries cultivated in a highland tropical climate
Provedor de dados: 1
Autores: Guedes, Mayara Neves Santos; Pio, Rafael; Maro, Luana Aparecida Castilho; Lage, Fabíola Fonseca; Abreu, Celeste Maria Patto de; Saczk, Adelir Aparecida.
Blackberries are an important option for the diversification of fruit crops. However, there is currently no literature regarding plant cultivation in high-altitude tropical climates. Knowledge of the phenolic composition of blackberries is essential because variations in the levels of these components may exist between cultivars and may depend on environmental conditions. High performance liquid chromatography (HPLC) was used to evaluate the total phenol content of different blackberry cultivars (Arapaho, Brazos, Cainguangue, Cherokee, Choctaw, Comanche, Ébano, Guarani, Tupy and Xavante). Free radical scavenging activity in these cultivars was assayed using a DPPH test. The HPLC-UV chromatogram of blackberry fruit extracts at 280 nm revealed the presence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.00-8 total phenols; Free radicals; HPLC; Rubus spp. Fitotecnia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28413

Can “Caricia” and “Princesa” apples be considered low-chilling cultivars?
Provedor de dados: 1
Autores: Castro, Damián César; Alvarez, Norma; Gabriel, Paola; Buyatti, Marcela; Favaro, Juan Carlos; Gariglio, Norberto.
The purpose of this work was to study the response of two apple cultivars bred for low chilling environments to artificial chilling accumulation. Two trials were carried out; in experiment one, excised shoots were randomly taken from “Caricia” and “Princesa”, and in experiment two, intact and excised shoots of “Caricia”, “Princesa” and “Gala” (control) were collected. After collection, both shoot types were exposed to artificial chilling accumulation (4.0 ± 0.5°C) from 0 to 1200 chill units (CU). Bud break of mixed buds of “Caricia” and “Princesa” was higher than 50% between 0 CU to 1200 CU, irrespective of shoot type. Bud break of “Gala” mixed buds exceeded 50% only in intact shoots after accumulating 900 CU. The mean time to bud break of “Caricia” and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica Borkh; Dormancy; Bud break; Lack of chilling; Heat requirements.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30996

Variability in soil physical properties in landslide-prone areas
Provedor de dados: 1
Autores: Fonseca, Leticia d’Agosto Miguel; Lani, Joao Luiz; Fernandes Filho, Elpídio Inácio; Santos, Gerson Rodrigues dos; Ferreira, Williams Pinto Marques; Santos, Adriana Maria Rocha Trancoso.
The present study aimed to evaluate the relationship between the physical properties of the soil and relief in areas that are susceptible to landslides in the sub-basin of the Córrego do Yung, a creek in the urban district Três Moinhos of Juiz de Fora, Minas Gerais. Depth measurements of the solum were made at the soil sampling points, and the subsurface material was collected and analyzed for the two factors of particle size and type of horizon. In the laboratory, we determined the hydraulic conductivity, bulk and particle density, and total porosity, macroporosity and microporosity. The values of the physical properties throughout the sub-basin were predicted and mapped. Thematic maps were generated and showed a relation to each other: the clay was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 1.07.05.03-1 physical soil; Geostatistics; Landslide física do solo.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30561

Cashew nut shell liquid and formulation: toxicity during the germination of lettuce, tomato seeds and coffee senna and seedling formation
Provedor de dados: 1
Autores: Matias, Rosemary; Rosa, Ana Carolina; Oliveira, Ademir Kleber Morbeck; Pereira, Kelly Cristina Lacerda; Rizzi, Elvia Silvia; Machado, Alexandre Alves.
Cashew (Anacardium occidentale) nut shell liquid (CNSL) has been successfully used in trials as an Aedes aegypti larvicide, but little is known about its environmental effects. In this study, the potential effects of CNSL and a CNSL-based phyto-product formulation on the germination and growth of Lactuca sativa (lettuce), Lycopersicon esculentum (tomato) and Senna obtusifolia (coffee senna) were assessed. The pH of CNSL and the formulation were 6.4 and 6.8, respectively; the electrical conductivities were 2.89 μS cm-1 (CNSL) and 2.21 μS cm-1 (formulation), respectively, and both contained anacardic acid (53.2%) and degradation products. In bioassays for germination and growth, CNSL (25, 50, 100, 150, and 200 mg mL-1), the formulation (100 mg mL-1) and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia; Ecofisiologia; Sementes Anacardiaceae; Anacardium occidentale; CNSL; Anacardic acid; Allelopathy.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32603

Breeding new improved clones for strawberry production in Brazil
Provedor de dados: 1
Autores: Galvão, Alexandre Gonçalves; Resende, Luciane Vilela; Maluf, Wilson Roberto; Resende, Juliano Tadeu Vilela; Ferraz, Andrew Kim Lopes; Marodin, Josué Clock.
 Breeding different strawberry genotypes and plant selection in Brazil could result in new cultivars with better environmental adaptations. The aim was to develop and select new F1 strawberry plants with higher potential yields. Twelve hybrid populations were obtained from breeding the cultivars Aromas, Camarosa, Dover, Festival, Oso Grande, Sweet Charlie and Tudla, and 42 F1 hybrids were obtained from each population. An augmented randomized block design was used. Productive traits were measured and heterosis was calculated for all traits. The breedings Dover x Aromas and Camarosa x Aromas both showed 28.6% of their hybrids with a total fruit mass that was higher than that of cv. Aromas, and 9.5 and 14.3% were higher than that of cv. Camarosa,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia crossing; Fragaria x ananassa Duch.; Heterosis. Genética e Melhoramento de Plantas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30773

Nitrogen management effects on soil mineral nitrogen, plant nutrition and yield of super early cycle common bean genotypes
Provedor de dados: 1
Autores: Nascente, Adriano Stephan; Carvalho, Maria da Conceição Santana; Melo, Leonardo Cunha; Rosa, Paulo Holanda.
This study was conducted to measure the effects of the timing of nitrogen fertilization (NF) on soil N-NH4+ and N-NO3-, macronutrient contents in the leaves and grains, and the grain yield of super early genotypes (SEG) of common bean. Field experiments were performed for four growing seasons in an Oxisol soil in Santo Antônio de Goiás, Brazil, using a randomized block experimental design in a split plot scheme. The plots were planted with common bean SEG, and the subplots were the NF timings, including a treatment without N fertilization. The available soil N with improved fertility and medium to high levels of organic matter were enough to meet the N demands of the common bean crop in order to achieve yields of up to 3,000 kg ha-1. Fertilization with N,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia; Fitotecnia Phaseolus vulgaris L.; Early application of N; Fertilization; Brazilian Cerrado; Sustainable agriculture; Produção vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32781

Lettuce production in greenhouse under fertirrgation with nitrogen and potassium silicate
Provedor de dados: 1
Autores: Souza, Renan Soares de; Rezende, Roberto; Hachmann, Tiago Luan; Lozano, Cláudia Salim; Andrian, André Felipe Barion Alves; Freitas, Paulo Sérgio Lourenço de.
The objective of this study was to evaluate the effect of nitrogen and potassium silicate on the productive and commercial aspects of curly lettuce, Vera cultivar. The experimental design was completely randomized (CRD), with ten treatments and three replications. The treatments, arranged in a factorial design according to the Plan Puebla III matrix (Turrent &amp; Laird, 1975), consisted of the combination of five doses of nitrogen (9; 54; 90; 126 and 171 kg ha-1) and five doses of potassium silicate (1.15; 6.90; 11.50; 16.10 and 21.85 kg ha-1). A control treatment without application of nitrogen and potassium silicate was also inserted. The crop was grown in a greenhouse and the doses were applied as sidedressing using drip micro-irrigation system. Total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.00-8 Lactuca sativa L.  protected cultivation  micro drip irrigation  silicon. Fitotecnia; Fertirrigação Lactuca sativa L.; Protected cultivation; Micro drip irrigation; Silicon.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32897

Histochemical changes during the ontogeny of malagueta and biquinho pepper seeds
Provedor de dados: 1
Autores: Abud, Haynna Fernandes; Araújo, Eduardo Fontes; Araujo, Roberto Fontes; Picoli, Edgard Augusto de Toledo; Gallão, Maria Izabel.
This study aimed to evaluate the structural changes and reserve deposition of malagueta and biquinho pepper seeds and to determine their chemical composition during ontogeny. The fruits were collected 25, 40, 55, 70, 85, and 100 days after anthesis (DAA). After collection, the seeds were extracted and fixed in FAA 50 and then stored in 70% ethanol. Subsequently, the seeds were embedded in methacrylate (Historesin) and sectioned with a microtome. The sections were stained with Toluidine blue O for anatomical analysis and Xylidine Ponceau, Periodic acid Schiff (PAS) and Lugol’s iodine solution for histochemical analysis. Sections were made using a cryomicrotome for acid phloroglucinol staining and Sudan III tests. Progressive lignification of the seed coat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum frutescens; C. chinense; Chemical composition; Histochemistry; Reserves.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32492

Yield and acidity indices of sunflower and soybean oils in function of grain drying and storage
Provedor de dados: 1
Autores: Coradi, Paulo Carteri; Souza, Alex Eduardo Marchi de; Borges, Monica Cristina Rezende Zuffo.
The aim of this study was to identify the best conditions for drying and storing soybeans and sunflower grains to maintain their quality. In the first experiment, the soybeans were found to have initial moisture contents of 25 and 19% (w.b.) at different drying air temperatures (75, 90, 105, and 120°C). In the second step, the soybeans were evaluated after they were stored in paper bags and plastic polyethylene at temperatures of 3, 10 and 23°C for six months. In the third experiment, sunflower grains were tested after exposure to drying air temperatures of 45, 55, 65, and 75°C, and under storage conditions of 25°C and 50%, 20°C and 60%, 30°C and 40% RH over six months in paper bags and raffia. Drying the sunflower seeds at 45°C and storing them at 30°C...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Engenharia Agrícola postharvest; Processing and quality. Engenharia de Processamento de Produtos Agrícolas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/31121

Stevia rebaudiana (Bert) Bertoni: influence of osmotic stress and seed priming on seed germination under laboratory conditions
Provedor de dados: 1
Autores: Hossa, Keila Regina; Pedroza Carneiro, José Walter; Guedes, Terezinha Aparecida; Braccini, Alessandro Lucca.
 The foremost factor necessary for plant growers cultivating large acreages of Stevia rebaudiana (Bert) Bertoni is the production of qualitative bedding plants. The objective of this study was to evaluate the influence of osmotic-priming on the uniformity of seed germination. First, we evaluated the percentage of normal seedlings from two seed samples harvested in 2011 and 2012. The seeds harvested in 2012 produced 71.4% normal seedlings and thus they were used in the next experiments. The seeds were subjected to osmotic stress using five concentrations of polyethylene glycol (PEG-6000) at -0.2, -0.4, -0.6, -0.8, and -1.0 MPa in contrast with distilled water. Based on these first results, only -0.8 and -1.0 MPa were evaluated in the third experiment. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osmotic priming; Radicle protrusion; Time to seed germination; Sweeteners.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32951

Responses of quinoa (Chenopodium quinoa Willd.) seeds stored under different germination temperatures
Provedor de dados: 1
Autores: Strenske, Andressa; Vasconcelos, Edmar Soares de; Egewarth, Vanessa Aline; Herzog, Neusa Francisca Michelon; Malavasi, Marlene de Matos.
In this experiment, we assessed the germination and vigor of quinoa seeds packed in paper bags and stored at room temperature for 36, 85, 119, 146, 177 and 270 days. The seeds were harvested under experimental conditions in Marechal Candido Rondon, Paraná, during the 2012/13 growing seasons. Four replicates of 100 seeds each were established for each storage time, and the seeds were evaluated, on paper, based on the BOD under the following experimental temperature conditions: alternating temperatures of 20 and 30°C and a constant temperature of 25°C. The seeds from both treatments were subject to seven-hour photoperiods and 25°C under continuous darkness. The germinated seeds were counted daily for eight days after sowing, and we evaluated the percentages...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.03-2 Germination test; Temperature; Photoperiod; Seed vigor Produção e Beneficiamento de Sementes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30989

Developing an in vitro optimized protocol to sweet potato landraces conservation
Provedor de dados: 1
Autores: Vettorazzi, Renato Gobbi; Carvalho, Virginia Silva; Sudré, Cláudia Pombo; Rodrigues, Rosana.
This study aimed to develop a protocol for the in vitro conservation of 30 accessions of sweet potato collected in the northern region of Rio de Janeiro State, Brazil, aiming to extend the period between subcultures for this species. An in vitro minimal growth experiment was established with accession UENF 1931 in a factorial arrangement consisting of four concentrations of mineral salts in MS medium and four concentrations of sucrose, at two temperatures. The others accessions were grown in medium containing 100% MS salts and 2% sucrose, which was the medium that allowed the in vitro conservation of accession UENF 1931 for a longer time period. For this second experiment, 30 accessions of sweet potato and two temperatures were used. Plant height, number...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.00-8 Ipomoea batatas; Minimal growth; Germplasm bank; Maintenance of diversity; Fitotecnia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32700

Kinetic modeling of water sorption by roasted and ground coffee
Provedor de dados: 1
Autores: Baptestini, Fernanda Machado; Corrêa, Paulo Cesar; Oliveira, Gabriel Henrique Horta de; Cecon, Paulo Roberto; Soares, Nilda de Fátima Ferreira.
The objective of this study was to model the kinetics of water sorption in roasted and ground coffee. Crude Arabica coffee beans with an initial moisture content of 0.1234 kgwkgdm-1 were used. These beans were roasted to a medium roast level (SCCA # 55) and ground at three particle sizes: coarse (1.19 mm), medium (0.84 mm) and fine (0.59 mm). To obtain the water sorption isotherms and the isosteric heat, different conditions of temperature and relative humidity were analyzed using the dynamic method at 25ºC (0.50, 0.60, 0.70, and 0.80 of RH) and 30°C (0.30, 0.40, 0.50, 0.60, 0.70, and 0.80 of RH) and using the static method at 25ºC (0.332 and 0.438 of RH). The GAB model best represented the hygroscopic equilibrium of roasted coffee at every particle size....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Particle size; Specific surface; Isosteric heat.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32576

Population density of Beauveria bassiana in soil under the action of fungicides and native microbial populations
Provedor de dados: 1
Autores: Soares, Flávia Barbosa; Monteiro, Antonio Carlos; Babosa, José Carlos; Mochi, Dinalva Alves.
This study investigated whether populations of naturally-occurring soil bacteria, fungi and actinomycetes influence the effect of fungicides on the survival and growth of Beauveria bassiana. The toxicity of methyl thiophanate, pyraclostrobin, mancozeb and copper oxychloride at the recommended doses was analyzed in culture medium and in soil inoculated with fungus at various time points after addition of fungicides. All fungicides completely inhibited the growth and sporulation of B. bassiana in the culture medium. The fungicides were less toxic in soil, emphasizing the action of the microbial populations, which interfered with the toxic effects of these products to the fungus. Actinomycetes had the greatest influence on the entomopathogen, inhibiting it or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias; Microbiologia; Biological control; Entomopathogenic fungus; Soil microorganisms; Compatibility; Toxicity. Ecologia de Micro-organismos; Fungo entomopatogênico; Polulações nativas do solo; Micro-organismos do solo.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32816

Genetic divergence among castor bean lines and parental strains using ward’s method based on morpho-agronomic descriptors
Provedor de dados: 1
Autores: Silva, Adielle Rodrigues da; Silva, Simone Alves; Santos, Laurenice Araújo; Souza, Deoclides Ricardo de; Araújo, Gilmara de Melo; Moreira, Ricardo Franco Cunha.
This study sought to evaluate the genetic divergence among castor lines and parental strains in the germplasm bank at the Federal University of Recôncavo da Bahia (Universidade Federal do Recôncavo da Bahia) using morpho-agronomic descriptors. This experiment was conducted from 2014 to 2015 with 208 treatments represented by bank accessions that were analyzed using a randomized block design, which established homogeneity of the experimental conditions with all treatments repeated in four blocks. The genetic divergence analysis was performed using Ward’s method and Tocher’s method based on Gower’s distance, which are two clustering methods used in studies with castor beans, with the help of the statistical programs R and GENES. The results revealed the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias Ricinus communis L.; Multivariate; Variability Melhoramento Genético de Plantas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32504

Dynamized high dilutions for management of the leafcutter ant Acromyrmex laticeps Emery (Hymenoptera: Formicidae)
Provedor de dados: 1
Autores: Giesel, Alexandre; Boff, Mari Carissimi; Boff, Pedro.
High dilutions may have different biological effects due to the dynamization method and the dilution order used. The aim of this paper was to evaluate the foraging activity of the leafcutter ant Acromyrmex laticeps subjected to high dilution preparations originating from grinding worker ants and developing dilutions at the following dynamizations: 6, 12, and 30 CH (centesimal Hahnemannian dilution order), 5 LM (fifty millesimal Hahnemannian dilution order) and 35 K (Korsakovian dilution order). The preparations were applied daily for 10 days by spraying them on moving ants on tracks close to the anthill. The evaluations included counting the number of ants transporting vegetable fragments on the tracks before each application, after application, and 20 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Foraging; Non-residual therapies; High dilutions; Nosodes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32848

Mutation of Trp-574-Leu ALS gene confers resistance of radish biotypes to iodosulfuron and imazethapyr herbicides
Provedor de dados: 1
Autores: Cechin, Joanei; Vargas, Leandro; Agostinetto, Dirceu; Lamego, Fabiane Pinto; Mariani, Franciele; Dal Magro, Taísa.
Acetolactate synthase inhibitors are the main group of herbicides used in winter crops in Southern Brazil where their intensive use has selected for herbicide-resistant biotypes of radish. The resistance affects the efficacy of herbicides, and identifying the resistance mechanism involved is important for defining management strategies. The aim of this study was to elucidate the resistance mechanism of radish biotypes by quantifying the enzyme activity, ALS gene sequencing and evaluating the response of biotypes to iodosulfuron and imazethapyr herbicide application after treatment with a cytochrome P450 monooxygenase inhibitor. The susceptible (B1) and resistant (B4 and B13) biotypes were from wheat fields in the Northwest of Rio Grande do Sul State. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.02.05-2 Raphanus sativus; Mechanism of resistence; ALS enzyme activity; Gene mutation; Metabolism; Fitossanidade; Herbologia e Resistência de plantas daninhas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32521

Weed control methods effect on the hydraulic attributes of a Latosol
Provedor de dados: 1
Autores: Pires, Luiz Fernando; Araujo-Junior, Cezar Francisco; Piccolomini Dias, Nivea Maria; Dias Junior, Moacir de Souza; Alcântara, Elifas Nunes de.
 Weed management plays a key role in the minimization of soil physical degradation processes such as compaction and hydric erosion. Different weed control managements can induce distinct changes in soil structure. One important soil physical attribute used for the analysis of modifications in soil structure is the soil water retention curve (SWRC). The objective of this work was to verify the use of physico-hydrical attributes to understand the effect of weed control managements on soil structure. Two soil layers (0–0.05 and 0.10–0.15 m) and six weed control managements divided into two groups were analyzed: I. no soil disturbance and ground cover (no weed control, post-emergence herbicide, mechanical mower); and II. soil disturbance and no ground cover...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.01.02-1 mechanical weed control; Interrow area; Soil water retention; Pore size distribution; Air-filled porosity Física do Solo.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30814

Effect of foliar fungicide and plant spacing on the expression of lipoxygenase enzyme and grain rot in maize hybrids
Provedor de dados: 1
Autores: Kluge, Elizandro Ricardo; Mendes, Marcelo Cruz; Faria, Marcos Ventura; Santos, Leandro Alvarenga; Santos, Heloisa Oliveira dos; Szeuczuk, Kathia.
This study was carried out with the objective of evaluating the effect of fungicide application on grain rot in commercial maize hybrids and the relation between grain rot and the expression of lipoxygenase enzyme in grain in conventional row spacing of 0.70 m and reduced row spacing of 0.45 m. Treatments were made in a 3 x 8 factorial scheme, using three forms of management with fungicide (Trifloxystrobin + Prothioconazole) and eight maize hybrids divided into two groups (tolerant and susceptible) with three repetitions, totaling 72 plots in each environment (conventional and reduced spacing) in the 2013/2014 crop. The following characteristics were evaluated: grain rot percentage and lipoxygenase enzyme expression (LOX) in the grain. The hybrid and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.01-6; LOX; Spindle rot; Chemical control; Reduced spacing; Zea mays Produção Vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/33003

Land cover changes affect soil chemical attributes in the Brazilian Amazon
Provedor de dados: 1
Autores: Machado, Murilo Rezende; Camara, Rodrigo; Sampaio, Paulo de Tarso Barbosa; Pereira, Marcos Gervasio; Ferraz, João Baptista Silva.
Forest plantations may minimize the effects of deforestation in the Amazon. However, there are differences among species in terms of their influences on soil recovery. The effects of monospecific plantations of Acacia mangium, Dipteryx odorata, Jacaranda copaia, Parkia decussata,and Swietenia macrophylla, and areas of pasture and native forest on the chemical soil attributes of the Brazilian Amazon were evaluated. One bulked soil sample was collected per plot (0.00-0.05, 0.05-0.10, and 0.10-0.30 m; three plots of 128 m2) in each area. No significant differences in most of the soil attributes were observed among the forest plantations. However, soil K+ and P were higher in the Swietenia macrophylla plantations, while higher values of Ca2+, sum of bases, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias Amazon deforestation; Edaphic attributes; Environmental reclamation; Forest plantations; Manejo e Conservação do Solo.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32689

Genetic diversity between native and improved Cattleya walkeriana Gardner famous clones
Provedor de dados: 1
Autores: Tambarussi, Evandro Vagner; Ann Veasey, Elizabeth; Menezes, Lou; Ibañes, Bruna; Lombardi, Kátia Cylene; Vencovsky, Roland.
The aim of this study was to evaluate the genetic diversity among native plants and some individuals obtained from crosses with unknown genealogy of C. walkeriana as well as C. loddigesii and C. nobilior and to advance towards solving the question of the genetic purity of the “Orchidglade” clone. Eight microsatellite loci were used to evaluate the genetic diversity between individuals of C. walkeriana. Microsatellites were not efficient in determining the genetic diversity between C. walkeriana groups (native and improved). The difficulty in determining the genetic distance between the different genotypes can be attributed to the complex mating system of the species and to a weak genetic barrier that facilitates the development of hybrids. Our analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.02.03.00-4 orchid improvement; Genetic variation; Genetic differentiation; Cattleya loddigesii; Cattleya nobilior; Melhoramento vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32520

Different nitrogen and boron levels influence the grain production and oil content of a sunflower cultivar
Provedor de dados: 1
Autores: Alves, Luiziene Soares; Stark, Elvia Mariam Lis Martinez; Zonta, Everaldo; Fernandes, Manlio Silvestre; Santos, André Marques dos; Souza, Sonia Regina de.
Nitrogen is essential for plant growth and development and directly influences both grain production and oil content. Boron has been studied in sunflower cultivation due to high demand of this culture for this nutrient. This study aimed to evaluate the N and B differential supply effect on the grain and oil production of sunflower plants. The experiment was conducted in a greenhouse and used two sunflower hybrids: BRS 321 and Neon. N and B were applied via nutritive solution according to the following treatments: B + 50 N (2.49 kg ha-1 B and 10 kg ha-1 N at planting and 40 kg ha-1 B as additional fertilization); B + 10 N (2.49 kg ha-1 B and 10 kg ha-1 N at planting); 50 N (0 B and 10 kg ha-1 N at planting and 40 kg ha-1 N as additional fertilization) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.01.05-6 Helianthus annuus L.; Oilseed; Total N; Oil extraction Fertilidade do solo e e adubação.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30941

Use of wild yeasts as a biocontrol agent against toxigenic fungi and OTA production
Provedor de dados: 1
Autores: Souza, Mariana Lino; Passamani, Fabiana Reinis Franca; Ávila, Carla Luiza da Silva; Batista, Luis Roberto; Schwan, Rosane Freitas; Silva, Cristina Ferreira.
This study evaluated the antagonistic potential of 32 wild yeast isolates from coffee and cocoa bean fermentation. These yeasts were inoculated in co-cultivation with Aspergillus carbonarius (CCDCA 10608 and CCDCA 10408) and Aspergillus ochraceus (CCDCA 10612) isolated from grapes and coffee beans. The mycelial growth and ochratoxin A (OTA) production were evaluated, and the spores were counted after cultivation at 28°C for seven days. The yeasts presented higher inhibitory effects (53% in relation to the control) over the mycelial growth of the isolated A. ochraceus (CCDCA10612). Pichia anomala CCMA0148 and Saccharomyces cerevisiae CCMA0159 provided the greatest inhibition of the growth of all fungal strains. All Pichia species presented the highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.02.04-4 antagonistic activity; Ochratoxin A; Aspergillus; Inhibition; Pichia sp.; Saccharomyces sp Fitosanidade  Microbiologia Agricola.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32659

Fungicide and insecticide residues in rice grains
Provedor de dados: 1
Autores: Teló, Gustavo Mack; Marchesan, Enio; Zanella, Renato; Peixoto, Sandra Cadore; Prestes, Osmar Damian; Oliveira, Maurício Limberger.
The objective of this study was to analyse residues of fungicides and insecticides in rice grains that were subjected to different forms of processing. Field work was conducted during three crop seasons, and fungicides and insecticides were applied at different crop growth stages on the aerial portion of the rice plants. Azoxystrobin, difenoconazole, propiconazole, tebuconazole, and trifloxystrobin fungicides were sprayed only once at the R2 growth stage or twice at the R2 and R4 growth stages; cypermethrin, lambda-cyhalothrin, permethrin, and thiamethoxam insecticides were sprayed at the R2 growth stage; and permethrin was sprayed at 5-day intervals from the R4 growth stage up to one day prior to harvest. Pesticide residues were analysed in uncooked,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.01.-6 Oryza sativa L.; Food; Gas chromatography; Pesticides; Grains quality Manejo e Tratos Culturais.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30594

Germination and development of Amburana cearensis seedlings as influenced by seed weight, light and temperature
Provedor de dados: 1
Autores: Almeida, João Paulo Nobre de; Lessa, Bruno Franca da Trindade; Pinheiro, Charles Lobo; Gomes, Fernanda Melo; Medeiros Filho, Sebastião; Silva, Cydianne Cavalcante.
 The objective of this work was to study the seed germination and seedling growth of A. cearensis (Allemão) A. C. Sm. influenced by seed weight and under different temperature and light conditions. Seeds were individually weighed and divided into three weight classes (light, medium and heavy), and each was subjected to germination tests under two light conditions (presence or absence) and six temperature regimes (20, 25, 30, 35, 40, and 20-30°C). The experiment was established with a completely randomized design in a split-split plot arrangement with four replicates. We determined the first count, final germination percentage and germination speed index. To assess seedling growth, the length and dry mass of the epicotyl and root + hypocotyl axis were also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia; Fitotecnia cumaru; Abiotic factors; Seed vigour. Produção e beneficiamento de sementes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32786

Growth and production of tomato fertilized with ash and castor cake and under varying water depths, cultivated in organic potponics
Provedor de dados: 1
Autores: Gomes, Daniela Pinto; Carvalho, Daniel Fonseca de; Pinto, Marinaldo Ferreira; Valença, David da Cunha; Medici, Leonardo Oliveira.
Two experiments were performed to evaluate the effect of ash (40, 80, and 120 g per plant), castor cake (140 and 280 g per plant) and water depth (135, 165, 191, and 213 mm) on the growth and production of organic tomato cultivated in pots in a greenhouse. The experimental design was randomized blocks, and the irrigation was managed using an automatic irrigation device. The following variables were evaluated: plant heights, numbers of leaves, bunches, flowers and fruits, total mass of fruits, mass of marketable fruits, mass of fruits with blossom-end rot, total diameter of fruits, and diameter of marketable fruits. Most of the growth variables showed gains with the application of 140 g of ash and 280 g of cake. The dose of 280 g of castor cake was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.03.02.01-9 Solanum lycopersicum L.; Organic agriculture; Water management. Irrigação e Drenagem.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32547

Inheritance of resistance to Meloidogyne incognita race 3 in cotton accession TX 25
Provedor de dados: 1
Autores: Alves, Gleina Costa Silva; Barbosa, Victor Hugo Silva; Giband, Marc; Barroso, Paulo Augusto Vianna; Rodrigues, Fabrício; Rocha, Mara Rubia da.
Cotton producers worldwide suffer with the losses caused by the presence of phytonematodes. The aim of the present study was to investigate the inheritance of resistance to Meloidogyne incognita race 3 in Gossypium hirsutum variety punctatum accession TX 25. Accessions of Gossypium sp. were obtained from the germplasm bank of Embrapa Cotton. Two experiments were performed in two consecutive years. In the first experiment, a susceptible parental line, FiberMax 966, a resistant parental line, TX 25, and their F1, F2 and backcross generations were tested. In the second experiment, parental lines FiberMax 966 and TX 25, their F2 generation, and genotypes M315 (resistant), LA887 and DeltaOpal (moderately resistant) were tested. In both experiments, plants were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fitossanidade Gossypium hirsutum; Gall nematode; Gene segregation; Nematologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32563

Population parameters and selection of kale genotypes using Bayesian inference in a multi-trait linear model
Provedor de dados: 1
Autores: Azevedo, Alcinei Mistico; Andrade júnior, Valter Carvalho de; Santos, Albertir Aparecido dos; Sousa Júnior, Aderbal Soares de; Oliveira, Altino Júnior Mendes; Ferreira, Marcos Aurélio Miranda.
 Variance components must be obtained to estimate genetic parameters and predict breeding values. This information can be obtained through Bayesian inference. When multiple traits are evaluated, Bayesian inference can be used in multi-trait models. The objective of this study was to obtain estimates of genetic parameters, gains with selection, and genetic correlations among traits. Likewise, we aim to predict the genetic values and select the best kale genotypes using the Bayesian approach in a multi-trait linear model. The following traits were evaluated: stem diameter, plant height, number of shoots, number of marketable leaves and fresh weight of leaves using Bayesian inference in 22 kale genotypes. The experiment consisted of a randomized block design...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fitotecnia Brassica oleracea L. var. acephala DC.; Genetic parameters; Crop breeding; Statistical modeling; Correlations Melhoramento genético de plantas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30856

Compatibility of polymers to fungi Beauveria bassiana and Metarhizium anisopliae and their formulated products stability
Provedor de dados: 1
Autores: Wenzel Rodrigues, Inajá Marchizeli; Batista Filho, Antonio; Giordano, Isabella Barichello; Denadae, Bárbara Evelin; Fernandes, João Batista; Forim, Moacir Rossi.
Stability during storage is a limiting factor in the development and use of bioinsecticides. This study aims to evaluate the compatibility of the entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana with components used in encapsulated formulations and to evaluate shelf-life in formulations with B. bassiana. Sodium alginate and maltodextrin, hemicellulose, and dimethyl sulfoxide solvents were evaluated. Compatibility was evaluated by mixing the components with PDA, and the parameters evaluated were vegetative growth, sporulation and viability. The formulations of fungi were prepared in various concentrations of sodium alginate and then added drop-wise to calcium chloride. To evaluate the stability, formulations were stored at 26.5, 4.0, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial control; Formulations; Entomopathogens; Encapsulation; Shelf-life; Microbiology.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32903

Identification of QTL underlying agronomic, morphological and physiological traits in barley under rainfed conditions using SNP markers
Provedor de dados: 1
Autores: Arriagada, Osvin; Mora, Freddy; Quitral, Yerko; Del Pozo, Alejandro.
Barley (Hordeum vulgare L.) is considered a good genetic model for evaluating mechanisms of drought tolerance, and it is the most important threat to crop production worldwide. This study aimed to identify single-nucleotide polymorphisms (SNPs) associated with agronomic, morphological and physiological traits in a population of 137 recombinant chromosome substitution lines (RCSL) of barley, which were evaluated under rainfed conditions, in Cauquenes, southern Chile (35°58’ S, 72°17’ W). The annual precipitation was 299 mm during the growing season. Fifty-two significant QTLs were detected for the studied traits, which explained between 5% and 13.8% of the phenotypic variation. A genomic region on chromosome 1H (that comprises SNPs 2711-234 and 1923-265)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hordeum vulgare; Mixed model; Recombinant chromosome substitution lines; Segregation distortion.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32612

Aspects of the sensorial quality and nutraceuticals of Plinia cauliflora fruits
Provedor de dados: 1
Autores: Wagner Júnior, Américo; Paladini, Marcos Villy; Danner, Moeses Andrigo; Moura, Gisely Correa de; Guollo, Karina; Nunes, Isadora Bischoff.
 Nationally known in Brazil, the jabuticabeira or jabuticaba tree produces fruits of wide commercial acceptance. However, little use of jabuticaba in commercial orchards and large genetic erosion of jabuticaba caused by human activities in its habitats have been historically observed. Thus, the goal of this study was to characterize fruits of the jabuticaba tree (Plinia cauliflora) in a forest fragment maintained in southwestern Paraná State in an attempt to identify trees with superior fruits for future selection as cultivars or male genitors. To this end, 15 variables linked to sensory and biochemical characteristics of harvested fruits were analysed during two years of production. Twenty percent of the genotypes that showed the highest frequency of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myrtaceae; Phenotypic variability; Biochemical characteristics.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35420

Older leaf tissues in younger plants are more susceptible to soybean rust
Provedor de dados: 1
Autores: Xavier, Sheila Ariana; Martins, Daiane Cristina; Fantin, Lucas Henrique; Canteri, Marcelo Giovanetti.
The aim of this study was to clarify the relationship between soybean leaf/plant age and the susceptibility to infection by Phakopsora pachyrhizi. Two studies were conducted in the greenhouse during the 2009/2010 season using the BRS 232 cultivar. The experimental design for Study 1 was fully randomized in a 2 x 3 factorial arrangement (phenological stage x age of the 4th, 5th and 6th trifoliate at the time of inoculation), and in Study 2, the experimental design was fully randomized with five treatments (T) and four replicates. The variables assessed were disease severity, number of lesions, uredinia per lesion, and viable spores. In Study 1, it was observed that disease severity was lower when the plant was in the growth stage V6 (11.4%), compared to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.00.00.00-4; 5.01.00.00-9; 5.01.02.00-1 Phakopsora pachyrhizi; Phenological stage; Age of trifoliates Fitopatologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30638

Resistance to Enneothrips flavens Moulton and genetic parameters estimation in interspecific genotypes of peanut
Provedor de dados: 1
Autores: Pirotta, Melina Zacarelli; Silva, Fabiana Mota da; Michelotto, Marcos Doniseti; Fávero, Alessandra Pereira; Godoy, Ignácio José de; Unêda-Trevisoli, Sandra Helena.
 Peanut is an oilseed crop of great importance for Brazilian agribusiness. A major factor affecting its production is pest incidence, mainly thrips. This study aimed to evaluate the potential for resistance to Enneothrips flavens in genotypes derived from the cross between IAC 503 and the amphidiploid (A. magna x A. cardenasii)4x and to estimate the genetic and phenotype parameters in these genotypes, allowing for better targeting in the selection. The experiments were conducted in a Federer augmented block design with additional checks in two generations (F3 and F4). Resistance to thrips was evaluated by its natural infestation and the symptoms of attacks by the insect. They were also evaluated using agronomic trait indicators of interspecific segregating...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.05-9 Arachis hypogaea L.; Thrips; Resistance to insects; REML/BLUP; Melhoramento Vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32776

Adaptability and stability of reproductive and vegetative phases of peach trees in subtropical climate
Provedor de dados: 1
Autores: Souza, Filipe Bittencourt Machado de; Barbosa, João Paulo Rodrigues Alves Delfino; Pio, Rafael; Reighard, Gregory Lynn; Tadeu, Maraísa Hellen; Curi, Paula Nogueira.
The peach tree (Prunus persica) is a fruit species native to temperate climates that requires a chill during its hibernal period to overcome dormancy. However, due to genetic breeding, varieties are currently grown in subtropical and tropical regions where there are low occurrences of chill during this phenological stage. This study evaluated the adaptability and stability of the reproductive and vegetative phases of peach tree cultivars in a subtropical climate. An experiment was designed in randomized blocks with split time plots, with 23 peach tree cultivars and four replications, with each replication consisting of one plant and four shoots. The years of evaluated (plots) and the cultivars (subplots) were considered to be treatments. The relative rates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fitotecnia Prunus persica; Fruit set; Shoot formation; Chill requirement. Manejo cultural.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32914

Organic matter inoculated with diazotrophic bacterium Beijerinckia indica and Cunninghamella elegans fungus containing chitosan on banana “Williams” in field
Provedor de dados: 1
Autores: Stamford, Newton Pereira; Silva, Emmanuella Vila Nova; Oliveira, Wagner da Silva; Silva, Marta Cristina Freitas da; Martins, Marllon dos Santos; Silva, Vinicius Santos Gomes da.
The production of biofertilizers from rocks increases nutrients for plant nutrition without environmental pollution. The aim of this study was to evaluate the effectiveness of biofertilizers from phosphate and potassium rocks mixed with organic matter (earthworm compound) inoculated with free living diazotrophic bacteria (NFB 10001) and Cunninghamella elegans (fungus with chitosan) on yield, characteristics, and nutrient uptake of banana (cv. Williams), and attributes of a Red Yellow Argisoil of the rainforest Zone of Pernambuco, Brazil. The experimental design included two biofertilizers: (a) PK rock biofertilizers plus organic matter (NPKB) and (b) bioprotector (NPKP) applied at 50, 100 and 150% of the recommended rate for banana, which were compared...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Earthworm compost; Nitrogen Fixation; Fungi chitosan; Fruticulture biotite; Earthworm compost; Fungi chitosan; Organic fertilization; Rocks with P and K Microbiologia e Bioquímica do Solo.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30857

Physiological and sensorial quality of Arabica coffee subjected to different temperatures and drying airflows
Provedor de dados: 1
Autores: Alves, Guilherme Euripedes; Borém, Flávio Meira; Isquierdo, Eder Pedroza; Siqueira, Valdiney Cambuy; Cirillo, Marcelo Ângelo; Pinto, Afonso Celso Ferreira.
The objective of this study was to evaluate the correlation between a group of physiological variables (electrical conductivity, potassium leaching, and germination percentage) and a group of drying kinetics variables (drying time and drying rate) in addition to verifying the relation between drying kinetics variables and coffee quality as a function of processing type, temperature, and drying airflow. Coffee drying was conducted in a fixed-layer dryer at two temperatures and two airflows. After drying, an evaluation of the physiological and sensorial quality was conducted. Based on the results obtained, the following conclusions were drawn: coffee that is processed via a dry method is more sensitive to mechanical drying with heated air than coffee...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias. Engenharia Agrícola. Engenharia de Processamento de Produtos Agrícolas. Pré-processamento de produtos agrícolas drying kinetics; Processing; Drying rate. Pré-processamento de produtos agrícolas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/31065

Effect of selective logging on floristic and structural composition in a forest fragment from Amazon Biome
Provedor de dados: 1
Autores: Rocha, Karen Janones da; Souza, Édila Cristina de; Favalessa, Cyro Matheus Cometti; Caldeira, Sidney Fernando; Martinez, Diego Tyszka; Brondani, Gilvano Ebling.
 This study was conducted in one region of a Seasonal Semideciduous Forest located in Tapurah (Mato Grosso State, Brazil) with the aim of studying its floristic and structural composition. The fixed area method was applied to 10 × 250 m clusters, allocating and measuring five clusters with five subunits of 500 m² each. Species with a diameter at breast height greater than or equal to 10 cm were considered, and the sample sufficiency of the floristic survey was verified by a species accumulation curve. The similarities between the sample subunits were calculated by the Jaccard Similarity Index, and the species diversity with the Shannon Diversity Index and Pielou Evenness Index. The horizontal vegetation structure was characterized by density, frequency,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bootstrap; Phytosociology; Environmental disturbance.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32543

Heterosis and combining ability of seed physiological quality traits of single cross vs. three-way sorghum hybrids
Provedor de dados: 1
Autores: Galicia-Juárez, Marisol; Mendoza-Onofre, Leopoldo Ernesto; González-Hernández, Víctor Arturo; Cisneros-López, María Eugenia; Benítez-Riquelme, Ignacio; Córdova-Téllez, Leobigildo.
The aim of this research was to compare genetic parameters for traits related with seed germination and seedling vigour of single cross (SCH) vs. three-way (TWH) sorghum hybrids. The study was conducted in a sand bed under a greenhouse; 67 genotypes (four pairs of A- and B- lines, four R- lines, 13 SCH and 42 TWH) were allocated in a randomized complete blocks experimental design with three replications. Statistical analysis included ANOVA’s and Student “t” tests, while Tukey test (p £ 0.05) was applied for mean comparisons. The R-lines showed better physiological seed quality attributes than the A- and B- lines. The seed quality and heterosis values of SCH vs. that of TWH did not show significant differences (p &gt; 0.05) for any variable; however,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum bicolor L. Moench; Maternal effects; Seedling emergence; Sorghum lines; Top-cross tests.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/31198

Relationship between manganese toxicity and waterlogging tolerance in Zea mays L. cv. Saracura
Provedor de dados: 1
Autores: Silva, Dayane Meireles da; Fonte, Nathalia dos Santos da; Souza, Kamila Rezende Dázio de; Rodrigues-Brandão, Isabel; Libeck, Ian Teodoro; Alves, Jose Donizeti.
The objective of this study was to evaluate the relationship between excess manganese and waterlogging tolerance in 18th selection cycle Zea mays L. cv. Saracura plants. Maize plants were transferred to plastic receptacles containing solutions with different concentrations of manganese. Leaves and roots were evaluated at the beginning of treatment and after 7, 14, and 21 days for chlorophyll content, biomass production and antioxidant metabolism. Mn was strongly translocated from the roots to the leaves, triggering a decrease in chlorophyll content. Excess Mn promoted an increase in reactive oxygen species that was accompanied by higher levels of antioxidative enzyme activity and lipid peroxidation. Zea mays L. cv. Saracura efficiently sequestered...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.03.00-9 hypoxia; Chlorophyll; Oxidative stress Fisiologia Vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30997

Isolation and characterization of Bacillus thuringiensis strains active against Elasmopalpus lignosellus (Zeller, 1848) (Lepidoptera, Pyralidae)
Provedor de dados: 1
Autores: Zorzetti, Janaina; Ricietto, Ana Paula Scaramal; Fazion, Fernanda Aparecida Pires; Meneguim, Ana Maria; Neves, Pedro Manuel Oliveira Janeiro; Vilas-Bôas, Gislayne Trindade.
 Elasmopalpus lignosellus (Zeller, 1848) (Lepidoptera, Pyralidae) is an insect pest of 60 economically important crops, including sugarcane, wheat, soybean, rice, beans, sorghum, peanuts, and cotton. The aim of this work was to select and characterize Bacillus thuringiensis isolates with insecticidal activity against E. Lignosellus that could be used as an alternative method of control. Selective bioassays were done to evaluate the toxicity of 47 isolates against first instar larvae of E. lignosellus. For the most toxic bacterial strains, the lethal concentration (LC50) was estimated and morphological, biochemical and molecular methods were used to characterize the isolates. Among the 47 isolates tested, 12 caused mortality above 85% and showed LC50 values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia; Fitossanidade biological control; Cry genes; Entomopathogenic bacteria; Lesser cornstalk borer. Controle microbiano de pragas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32707

Multivariate technique for determination of soil pedoenvironmental indicators in Southern Amazonas
Provedor de dados: 1
Autores: Oliveira, Ivanildo Amorim de; Marques Júnior, José; Campos, Milton César Costa; Aquino, Renato Eleoterio de; Freitas, Ludmila de; Ferraudo, Antônio Sérgio.
The use of statistical techniques to evaluate soil attribute behaviour is an important tool for choosing the most adequate form of soil management. Thus, the aim of this study was to jointly assess the physical and chemical attributes and the magnetic susceptibility characteristics of three environments and to use multivariate statistics to define which attributes have the greatest potential as environmental change indicators. The study was conducted in three areas: one with archaeological black earth (and planted maize); one with pasture; and one of the forest. Sixty-four (64) deformed and non-deformed soil samples each were collected within these areas, with a 70 x 70 m grid spaced every 10 meters at depths of 0.0-0.2 and 0.4-0.6 m, to determine the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.00.00.00-4; 5.01.00.00-9; 5.01.01.00-5; 5.01.01.06-4; 5.01.01.02-1; 5.01.01.03-0 main component; Amazonian; Archaeological dark earth Manejo e Conservação do Solo; Física do Solo; Química do Solo.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30763

Effect of oral dietary supplement for chicks subjected to thermal oscillation on performance and intestinal morphometry
Provedor de dados: 2
Autores: Fernandes, Jovanir Inês Müller; Gonçalves, Daianna Rosse Martins; Riffel, Eliana Thais; Vanroo, Elisângela; Lima, Fernanda Kaiser de; Broch, Jomara.
The aim of the study was to evaluate the efficacy of a nutritional formulation based on amino acids and vitamins supplemented in the drinking water for chicks in the first week of life subjected to thermal oscillation on performance, organ development and intestinal morphometry from 1 to 21 days. 640-male broiler chicks were distributed in a 2x2 factorial completely randomized design (with or without dietary supplementation and at comfort temperature or thermal oscillation). Chicks subjected to thermal oscillation presented worse performance (p &lt; 0.05) than those under thermal comfort of 1 to 7, 1 to 14 and 1 to 21 days. Nutritional supplementation did not alter the performance (p &lt; 0.05) of the birds, but resulted in a higher body weight (p &lt;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.00-1 - nutrição e alimentação animal broilers; Weight gain; Intestinal mucosa; Ambient temperature; Post-hatching.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33279

Evaluation of body weight prediction Equations in growing heifers
Provedor de dados: 2
Autores: Franco, Marcia de Oliveira; Marcondes, Marcos Inácio; Campos, José Maurício de Souza; Freitas, Denise Ribeiro de; Detmann, Edenio; Valadares Filho, Sebastião de Campos.
This study was realized to evaluate prediction models for body weight (BW) using body measurements as heart girth (HG), wither height (WH), hip width (HW), body length (BL) and hip height (HH), and develop new Equations to predict the BW of Holstein and crossbred heifers. Prediction Equations (1, 2, 3, 4, 5 and 6) proposed in previous studies were tested, while body measurements, which were more significant in terms of predicting BW, were used to obtain new Equations. Heart girth was the body measurement with the greater correlation with BW. Equation 4 presented the best prediction results, showing a low average deviation, high accuracy and precision. Equations 1 and 2 predicted with a high presence of bias, while 2 had the lowest value of the concordance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia; Produção animal; Bovinocultura leiteira body measurements; Dairy heifers; Heart girth; Holsteins.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33118

Digestible protein requirement for Nile tilapia fed with rations based on soybean meal and corn
Provedor de dados: 2
Autores: Carneiro, William Franco; Pandini, Fernanda; Silva, Lilian Carolina Rosa da; Santos, Lilian Dena dos; Rossato, Katsciane Aparecida; Meurer, Fabio.
The objective was to determine the requirement of digestible protein (DP) for Nile tilapia fed with diets based on soybean meal and corn. Two hundred Nile tilapia juveniles, sexually reversed, were used for a trial period of 100 days. The animals were distributed in 20 boxes of 1000 L-1 in a random design with five treatments and four replications, the boxes were connected to a water recirculation system. Five isoenergetic diets were tested with different levels of digestible protein (DP): 20, 25, 30, 35 and 40%. At the end of the experimental period were evaluated the zootechnical performance data. A quadratic effect (p &lt; 0.05) was shown to parameters of final weight, weight gain, final length, fillet yield and visceral fat with the best points that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.06.03.00-0 plant origin feed; Aquaculture; Fish nutrition.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36122

Tilapia by-product hydrolysate powder in diets for Nile tilapia larvae
Provedor de dados: 2
Autores: Sary, Cesar; Paris, Leandro Daniel de; Bernardi, Daniela Miotto; Lewandowiski, Vanessa; Signor, Altevir; Boscolo, Wilson Rogério.
This study aimed to evaluate the digestibility of tilapia by-product protein hydrolysate powder (TBHP) from tilapia filleting by-product, and its inclusion in diets for Nile tilapia larvae. In order to determine the apparent digestibility coefficients, two diets were formulated, the reference diet and the test diet (20% of TBHP) and, to evaluate the inclusion, six diets were formulated, which were with 0.0, 2.0; 4.0; 6.0, and 8.0% of TBHP. The apparent digestibility coefficients of crude protein and gross energy were 89.5 and 98.3%, respectively. At levels above 4.0% of inclusion of TBHP, the weight, final length and weight gain were impaired, however, survival rate was higher (p &lt; 0.05). The TBHP can be used in diets for tilapia due to the high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility; Fish nutrition; Performance.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32805

Effect of cassava wastewater on physicochemical characteristics and fatty acids composition of meat from feedlot-finished lambs
Provedor de dados: 2
Autores: Santana Neto, Jose Adelson; Muniz, Evandro Neves; Santos, Gladston Rafael Arruda; Macedo, Francisco de Assis Fonseca; Rangel, Jose Henrique de Albuquerque; Gomes, Ludmila Couto.
This study aimed to evaluate the effects of includingcassava wastewater (0.0, 0.5, 1.0, or 1.5 L animal-1 day-1) in diets of feedlot-finished lambs on the physicochemical characteristics and fatty acid composition of their meat. Thirty-two uncastrated lambs atan average age of 167 days and an average body weight of 24.76 ± 3.00 kg were distributed into four groups in a completely randomized design with eight animals per group for each treatment. Inclusion of cassava wastewater linearly reduced cooking losses, shear force, and yellow intensity and linearly increased the fat content of the meat. The amounts of myristic, stearic, linoleic, and total fatty acids were changed. Additionally, an effect of cassava wastewater was observed on the amounts of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.05.00-4 by-products; Cooking losses; Fat; Meat color; Shear force; Nutritional quality.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35180

Production and quality of Mombaça grass forage under different residual heights
Provedor de dados: 2
Autores: Carvalho, Ana Luiza Silva; Martuscello, Janaina Azevedo; Almeida, Otávio Goulart de; Braz, Thiago Gomez dos Santos; Cunha, Daniel de Noronha Figueiredo Vieira da; Jank, Liana.
This study was conducted to evaluate management strategies in Mombaça grass pastures (Panicum maximum) under intermittent grazing subjected to different residual heights. A randomized-block design with two treatments (two post-grazing residual heights: 30 and 50 cm) and three replications was adopted. Pasture heights pre- and post-grazing, forage mass and accumulation, rest and occupation periods, pasture morphological components, milk yield and quality forage were evaluated. The data were submitted to analysis of variance and the means were compared by the F test at 5% probability. A longer grazing interval was observed in the treatments under the more severe grazing intensity. For forage mass post-grazing, larger production and higher percentage of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.02-4 defoliation; Grazing system; Pasture.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34599

Total lipid nutritional quality of the adipose tissue from the orbital cavity in Nile tilapia from continental aquaculture
Provedor de dados: 2
Autores: Sousa, Alison Bruno Borges de; Santos Júnior, Oscar de Oliveira; Visentainer, Jesuí Vergílio; Almeida, Neiva Maria de.
 This study aimed to determine the fatty acid composition and nutritional quality indexes of total lipids in adipose tissue from the orbital cavity of Nile tilapia from continental aquaculture in Paraiba State, Brazil. The tilapias were captured in six fish farms, and after slaughtering and bleeding, the adipose tissue from the orbital cavity was reserved, frozen and lyophilized for analysis of fatty acid composition by gas chromatography. By decreasing order, oleic, palmitic, linoleic, stearic, and palmitoleic acids were the most abundant ones.  Monounsaturated fatty acids were the most prominent group in orbital cavity adipose tissue, where as polyunsaturated fatty acids were most abundant in the diet, with a percentage of linolenic acid ranging from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.07.01.00-2  5.07.01.02-9 fatty acids; Atherogenicity index; Thrombogenicity index; Oreochromis niloticus.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36303

How the calving order of cows affects the performance of Nellore calves
Provedor de dados: 2
Autores: Silveira, Rafael Kill; Jangarelli, Marcelo.
This study aimed to verify the effect of age of dam on the performance of male and female Nellore calves, using the following variables: average daily gain (ADG), adjusted weight for 205 days of age (W205), and number of days to reach 160 kg (D160). Information were collected from a commercial herd consisting of 1,122 calves and 1,009 heifers and their mothers. To classify animals with similar performance based on the cows’ calving orders (age of dam), the multivariate cluster analysis was adopted through the complete linkage hierarchical method. The best performance was observed in the calves of cows in their sixth calving at most; for heifers, the best performance was seen in those born to cows in their eighth calving at most. Cows in their eighth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia  Produção animal average daily gain; Cluster analysis; Cow age; Number of days to reach 160 kg; Weaning weight.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34519

Agronomic traits and nutritional value of forage sorghum genotypes
Provedor de dados: 2
Autores: Lima, Luciana Oliva Barbosa; Pires, Daniel Ananias de Assis; Moura, Marielly Maria Almeida; Rodrigues, José Avelino Santos; Tolentino, Daniella Cangussú; Viana, Maria Celuta Machado.
This study aimed to evaluate the agronomic performance of 24 sorghum genotypes in four Brazilian regions and the chemical characteristics of genotypes grown in Sete Lagoas, state of Minas Gerais. Genotypes BRS655 and 12F37005 had higher average production of green matter (&gt; 44 ton ha-1) and dry matter (&gt; 17 ton ha-1), respectively. Genotypes 12F38019, 12F40019, 12F37005, 12F37043 and Volumax took more days to flower in three of the four municipalities (75-90 days). Genotypes 12F38006, 12F40006 and 12F37016 were taller (&gt; 2 m). Values of dry matter, crude protein and neutral detergent fiber ranged from 37.15 to 50.13; 5.51 to 10.28 and 43.57 to 65.69%, respectively. The genotypes were not different regarding acid detergent fiber content, with mean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ZOOTECNIA; NUTRIÇÃO E FORRAGICULTURA chemical composition; Hybrids; Productivity.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32356

Effect of dietary probiotic supplementation on carcass traits and haematological responses of broiler chickens fed shea butter cake based diets
Provedor de dados: 2
Autores: Aguihe, Paschal Chukwudi; Kehinde, Abiodun Solomon; Abdulmumini, Sufiyan; Ospina-Rojas, Iván Camilo; Murakami, Alice Eiko.
A 42-day study was conducted to investigate probiotic supplementation on shea butter cake (SBC) based diets of broilers on the carcass traits and haematological indices. A total of 280, 1-day old Arbor acres strain broiler chicks were divided into 7 dietary treatments with 4 replicates of 10 birds each in a completely randomized design. Diet 1 (control diet) has no SBC and probiotic supplementation while remaining 6 diets contained 5, 10, and 15% levels of SBC each with (+) or without (-) probiotic supplementation. The results showed that carcass parameters and prime cuts weights increased (p &lt; 0.05) in birds fed probiotic-SBC diets compared to control diets. Abdominal fat content was lower (p &lt; 0.05) in birds fed probiotic-SBC diets than those on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agro by-product; Feed additive; Carcass characteristics; Blood; Chicken.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34813

Performance and economic viability of broiler chicken fed diets with multienzyme complexes
Provedor de dados: 2
Autores: Pasquali, Guilherme Aguiar Mateus; Oliveira, Raphael Fortes de; Aiello, Paula Andressa Bedim; Polycarpo, Gustavo do Valle; Crivellari, Rafael; Cruz-Polycarpo, Valquíria Cação da.
This study evaluated the effect of multienzyme complexes (EC1 and EC2) in low nutritional density diets on performance and economic viability of broilers. A total of 840 day-old chicks were assigned to 7 treatments, distributed in a completely randomized design: (1) PC: positive control, basal diet formulated to meet nutritional requirements; (2) NC1: negative control, reduced energy and nutrient density diet without enzymes; (3) NC1+EC1; (4) NC2: negative control, diet formulated with 7% over-estimated crude protein and amino acids of soybean meal without enzymes; (5) NC2+EC2; (6) NC3: negative control, reduced energy and nutrient density diet and over-estimation of crude protein and amino acids of soybean meal; (7) NC3+EC1+EC2. Feeding NC1 or NC3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.00-1 exogenous enzymes; Poultry; Enzyme complexes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32765

Aerobic stability in corn silage (Zea maysL.) ensiled with different microbial additives
Provedor de dados: 2
Autores: Bumbieris Junior, Valter Harry; Guimarães, Vinícius André de Pietro; Fortaleza, Ana Paula de Souza; Massaro Junior, Fernando Luiz; Moraes, Gabriella Jorgette de; Meza, Diego Armando Rojas.
  This study aimed to assess different microbial additives, regarding the efficiency of aerobic stability in corn silages. The corn hybrid used for silages production was the DKB 310. The treatments consisted of: 1) control treatment without any microbial additive; 2) Treatment with LPPA composed of: Lactobacillus plantarum CCT 0580 3.1 x 1010 CFU g-1 and Propionibacterium acidipropionici CCT 4843 3.1 x 1010 CFU g-1; 3) Treatment with Inoculum, composed of Bacillus subtilis CCT 0089 3.0 x 109 CFU g-1, Lactobacillus plantarum CCT 0580 1.2 x 1010 CFU g-1 and Propionibacterium acidipropionici CCT 4843 1.5 x 1010 CFU g-1 and 4) Treatment LB, composed only of Lactobacillus buchneri CCT 3746 2.6 x 1010 CFU g-1. The experimental design was completely randomized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.01-6 A aerobiosis; Silage; Fermentation; Nutritional quality.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34426

Phenolic acids and ruminal parameters of different varieties of sugarcane in natura or ensiled
Provedor de dados: 2
Autores: Spínola, Jaime Emerson Laranjeira; Tavares dos Reis, Sidnei; Junqueira de Sales, Eleuza Clarete; Monção, Flávio Pinto; Rigueira, João Paulo Sampaio; Delvaux Júnior, Nelson de Abreu.
This study aimed to determine and measure the phenolic acids in four varieties of sugarcane (RB 855536, RB 765418, SP 80-1842 and SP 80-1816) as fresh and ensiled, and assess the influence of these acids on in situ degradability of dry matter and neutral detergent fiber. The experimental design was completely randomized in a factorial design. For the fraction of dry matter (DM), varieties RB 855536 and SP 80-1842 had average 17.80% higher compared to others. The SP80-1842 and RB 855536 varieties did not differ (p &gt; 0.05), with an average of DM effective degradability of 33.70%. For silage, the highest levels of p-coumaric acid were found in the variety RB 855536, which was 24.64% higher than the varieties RB 765418 and SP 80-1842 (average 12.75%) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.00-1 digestibility; Fermentation; Lignin; Silage; Nutritional value.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31470

Milk composition and blood metabolic profile from holstein cows at different calving orders and lactation stages
Provedor de dados: 2
Autores: Dias, Mariana Borges de Castro; Leão, Karen Martins; Carmo, Ruthele Moraes do; Silva, Marco Antônio Pereira da; Nicolau, Edmar Soares; Marques, Thaisa Campos.
This study aimed to evaluate milk composition and metabolic profile of Holstein cows at different calving orders in the beginning, middle, and end of lactation. One hundred ten Holstein cows were housed in a free stall system receiving the same diet and were grouped according to calving order (first, second, third, and fourth calving) and days in milk (DIM): early (1-90 DIM), middle (91-180 DIM), and end of lactation (over 181 DIM) for comparing milk yield, milk composition, and blood metabolic profile between the calving orders within the same lactation period. These parameters were also evaluated between lactation periods of the cows in different calving orders. The calving order, in any lactation stage, had no influence on milk yield per day and blood...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biochemical profile; Lactation period; Milk quality.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34807

Indicators of land use by cattle: associations among methods and role of environmental factors
Provedor de dados: 2
Autores: Costa, Mateus José Rodrigues Paranhos da; Páscoa, Adriano Gomes; Sant'Anna, Aline Cristina; Silva, Lívia Carolina Magalhães; Jung, Jens.
The objectives of this study were to investigate the associations among direct and indirect indicators of land use by cattle and to understand the role of some environmental factors on the definition of these indicators. The study was carried out in two areas, Nature Reserve (63.6 ha) and Private Area (30.4 ha), with 53 Hereford animals in each area. Daytime observations of animals’ location were used as direct indicator of land use; while cattle track and dung pat distributions throughout the areas were used as indirect indicators. Environmental characteristics recorded were: terrain slope, prevalence of woody vegetation cover (forests, isolated tress and open grasslands), as well as the position of fences, water sources and salt blocks. Spatial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia; Ecologia dos Animais Domésticos e Etologia beef cattle; Tracks  dung pats; Spatial statistical analysis; Geographic information system.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35426

Assessing different holding pen cooling systems through environmental variables and productivity of lactating cows
Provedor de dados: 2
Autores: Silva, Danilo Corrêa; Passini, Roberta.
This studyaimed to assess different holding pen climatization systems for dairy cattle through environmental variables, milk production and economic indexes. Sixteen lactating cows were used, distributed in a 4 x 4 Latin square design consisting of four groups of four animals, assessed in four periods, seven days each, and in four holding pen environments: SUN– external environment (in the sun), SHA– 80%-protection polypropylenemesh shading, SHA + SPR– 80% polypropylene mesh shading + water sprinkling, SHA + SPR + VEN – 80% polypropylene mesh shading + water sprinkling + ventilation. The animals remained for 30 minutes in their respective environments. In this period, environmental variables were collected using data loggers, and the milk produced, in kg,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.03.04.00-3 Construções Rurais e Ambiência ambience; Economic viability; Dairy cows.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36087

Production and economic viability of feedlot beef cattle categories
Provedor de dados: 2
Autores: Santos, Petrônio Batista dos; Santana Junior, Hermógenes Almeida de; Araújo, Marcos Jacome de; Oliveira, Aracele Prates de; Freitas, Tiago Brandão; Viana, Pablo Teixeira.
This study was realized to evaluate the production and economic viability of finished beef cattle in feedlot in the Cerrado biome of Piauí State, Brazil. One hundred and fifty cattle -50 bulls (B) with an body weight of 283.0 ± 20.82 kg, at 30 months of age; and 100 cull cows (CC) with an body weight of 296.1 ± 17.80 kg, at 100 months of age- were used in a completely randomized design. The animal performance indicators for the evaluation of economic viability were initial age (months), slaughter age (months), was initial body weight (kg), final body weight (kg), daily feed intake (kg animal-1; kg kg-1 BW), diet cost (R$ kg-1 of diet), cost of kg produced (R$ kg-1 produced), and average price of the kg of meat for finishing (R$). The CC consumed more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.00.00.00-4; 5.04.00.00-2; 5.04.05.00-4; Performance; Production systems; Rate of return.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33452

Physical and chemical characteristics of milk from goats supplemented with different levels of total digestible nutrients in the dry period
Provedor de dados: 2
Autores: Nascimento, Thiago Vinicius Costa; Almeida Júnior, Washington Luiz Gonçalves de; Lopes Júnior, Edilson Soares; Menezes, Daniel Ribeiro; Dias, Francesca Silva; Costa, Mateus Matiuzzi da.
 We evaluated the physical and chemical characteristics of raw milk from goats supplemented with levels of Total Digestible Nutrients (TDN) in the dry period. Samples from 20 goats were divided into 4 groups, 3 groups received 400g concentrate per animal with different levels of TDN (65, 75 and 85%), and the control group (without concentrate). Four samples of milk were used for each animal, in four sampling periods, which were subjected to physical and chemical analysis. There was no significant difference between the treatments for the parameters of acidity and fat. The diet without concentrate presented higher value for the cryoscopic index. Mean values of the four treatments were within the range set by the Brazilian legislation for all parameters...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Veterinária concentrate; Legislation; Raw caprine milk.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35810

Ruminal fermentation of Nellore steers fed crude glycerine replacing starch vs. fibre-based energy ingredient in low or high concentrate diets
Provedor de dados: 2
Autores: Lage, Josiane Fonseca; San Vito, Elias; Reis, Ricardo de Andrade; Delevatti, Lutti Maneck; Pierre, Norman Saint; Berchielli, Telma Teresinha.
Twelve ruminally cannulated steers (401.0 ± 41.5 kg) and 24 mo were used in a replicated arrangement truncated Latin Square with six animals in six treatments and four periods to evaluate the effect of crude glycerine (CG; 80.3% of glycerol) with starch or fiber-based energy ingredients in the concentrate on DMI, DM (DMD) and NDF digestibility (NDFD) and ruminal parameters. Experimental periods were 19 days (14 days for adaptation and 5 days to sampling). Diets were: CO - without CG and corn as ingredient of concentrate; CGC - inclusion of CG (10% of DM) with corn in the concentrate; and CGSH - inclusion of CG (10% of DM) with soybean hulls (SH) in the concentrate. All three diets were offered at low (LC) or high (HC) concentrate level, CL (40 or 60%)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avaliação de Alimentos acetate; Glycerol; Propionate; PH; Soybean hulls.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32895

Performance of Holstein-Gyr crossbred heifers on pasture of Brachiaria decumbens supplemented with multiple supplement or proteined salt
Provedor de dados: 2
Autores: Santos, Ronald Matos dos; Lana, Rogério de Paula; Teixeira, César Roberto Viana.
 This study aimed to evaluate the performance, efficiency and economic viability of different supplements for dairy heifers on Brachiaria decumbens pasture. Twelve heifers with 186 ± 30.5 kg average weight were divided in three groups of four animals. The treatments were mineral salt ad libitum; 0.4 kg animal-1 day-1 proteined salt and 1.0 kg animal-1 day-1 multiple supplement. The experimental design was randomized blocks, with the contrasts considered significant at 5% probability. There was greater (p &lt; 0.05) body weight and higher daily weight gain in animals supplemented with proteined salt or multiple supplement, compared to supplemented with mineral salt. There was no difference (p &gt; 0.05) in any of the performance parameters between proteined...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.00-1 agrosilvipastoral system; Crossbred cows; Protein supplementation.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36013

Xylanase - complex efficacy in high-energy diet for bulls finished in feedlot
Provedor de dados: 2
Autores: Neumann, Mikael; Leão, Guilherme Fernando Mattos; Vigne, Gabriela Letícia Dalai; Santos, Leslei Caroline dos; Venancio, Bruno José; Dochwat, André.
Enzymes can be an interesting additive in high energy diets for feedlot cattle. However, literature is inconsistent on this subject. Thus, this study was conducted to evaluate animal performance of feedlot bulls receiving high energy diet, composed of a mixture of 85% whole corn grain and 15% protein-mineral-vitamin nucleus, without or with xylanase included in the diets. Diets consisted of: CON - diet without enzymes (Control) and ENZ - diet with enzymes (5 g animal day-1). Thirty-two bulls were used, with an average age of 11 ± 2 months, average initial weight of 365 ± 5 kg, and finished for 119 days in feedlot. The experimental design was completely randomized, consisting of two treatments and eight replications, where each replication was represented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição e Alimentação Animal; Avaliação de Alimentos para Animais beef cattle; Feed additive; Ruminant nutrition.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/37321

In vitro degradation and gas production of brachiaria grass with levels of biodiesel byproducts
Provedor de dados: 2
Autores: Freire, Juliana Marques; Silva, Aderbal Marcos de Azevedo; Carneiro, Heloisa; Pereira Filho, José Morais; Bezerra, Leilson; Bidler, Denise Cristiane.
This study aimed to evaluate the in vitro degradability and gas production in diets containing byproducts from the national biodiesel industry (castor bean, canola, forage radish and black sunflower) replacing Brachiaria grass in four levels (0, 30, 50 and 70%). The inoculum for in vitro incubation was obtained from three fistulated Holstein cows. The experimental design was 4 x 4 factorial completely randomized experimental design consisting of four byproducts and four levels. All byproducts studied had a significant effect (p &lt; 0.05) on in vitro digestibility. The castor bean byproducts promoted the lowest cumulative gas production at the end of 48 hours incubation. Regarding digestibility, the byproducts of canola and radish at 70% level did not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CIÊNCIAS AGRÁRIAS  5.04.00.00-2 digestibility; Ruminal fermentation; Protein.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32832

Supplementation with microencapsulated lemongrass essential oil improves protein deposition and carcass yield in silver catfish (Rhamdia quelen)
Provedor de dados: 2
Autores: Rampelotto, Cristine; Lima, Joziane Soares de; Pinheiro, Carlos Garrido; Salbego, Joseânia; Silva, Leila Picolli da; Emanuelli, Tatiana.
The aim of this study was to investigate the effect of dietary supplementation with Cymbopogon flexuosus essential oil (EO) on productive performance, metabolic parameters and body and fillet composition of adult silver catfish, Rhamdia quelen. Total length, condition factor, weight gain, specific growth rate, hepatosomatic index, visceral fat content and fillet composition were not affected by EO supplementation. Plasma total protein, globulin and triglycerides were reduced by EO supplementation. Supplementation with 1 mL EO kg-1 diet increased carcass yield and protein deposition in the carcass, while reducing gonadosomatic index and fat deposition in the carcass when compared to control group. In addition, 1 mL EO kg-1 diet also improved feed intake...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia/Nutrição e alimentação animal Cymbopogon flexuosus; Citral; Growth performance; Gonads; Body composition.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36517

Productive performance, egg quality and bone characteristics of quails fed with meal and canola oil
Provedor de dados: 2
Autores: Moraes, Priscila de Oliveira; Gopinger, Edenilse; Bavaresco, Caroline; Catalan, Aiane Aparecida da Silva; Dias, Renata Cedres; Xavier, Eduardo Gonçalves.
This study evaluated the effect of canola meal and oil in quail diet on productive performance, egg quality and bone characteristics. Quails (n = 84) with 150-days-of-age and average weight of 234±17 g were used in this experiment that lasted 84 days. The experiment consisted of a completely randomized design with 4 treatments, 7 replications with 3 birds each. Four diets were formulated: SM+SO - control diet with soybean meal and oil; MC+SO - 25% replacement of soybean meal with canola meal; MC+CO - 25% replacement of soybean meal with canola meal and complete replacement of canola oil with soybean oil; SM+OC - control diet with soybean meal and canola oil. Productive performance, internal and external egg quality and bone characteristics were evaluated....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.00-1 alternative ingredient; Performance; Nutrition.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31317

forage systems mixed with forage legumes grazed by lactating cows
Provedor de dados: 2
Autores: Olivo, Clair Jorge; Diehl, Michelle Schalemberg; Agnolin, Carlos Alberto; Bratz, Vinicius Felipe; Aguirre, Priscila Flôres; Sauter, Caroline Paim.
Current research evaluates productivity, stocking and nutritional rates of three forage systems with Elephant Grass (EG) + Italian Ryegrass (IR) + Spontaneous Growth Species (SGS), without forage legumes; EG + IR + SGS + Forage Peanut (FP), mixed with FP; and EG + IR + SGS + Red Clover (RC), mixed with RC, in rotational grazing method by lactating cows. IR developed between rows of EG. FP was maintained, whilst RC was sow to respective forage systems. The experimental design was completely randomized, with three treatments and two replication, subdivided into parcels over time. Mean rate for forage yield and average stocking rate were 10.6, 11.6 and 14.4 t ha-1; 3.0, 2.8 and 3.1 animal unit ha-1 day-1, for the respective systems. Levels of crude protein...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pastagem e Forragicultura; Avaliação  Produção e Conservação de Forragens Arachis pintoi; Lolium multiflorum; Pennisetum purpureum; Rotational grazing; Trifolium pratense.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32300

Feeding behavior of categories of feedlot-finished beef cattle
Provedor de dados: 2
Autores: Santos, Petrônio Batista dos; Santana Junior, Hermógenes Almeida de; Araújo, Marcos Jacome de; Oliveira, Aracele Prates de; Santana, Elizângela Oliveira Cardoso; Mendes, Fabrício Bacelar Lima.
 An experiment was conducted to evaluate the feeding behavior of feedlot-finished bulls and cull cows in the Cerrado region of Piauí State, Brazil. Forty Zebu cattle were used, of which 20 steers averaging 283.0 ± 20.82 kg initial body weight and 30 months of age; and 20 cull cows averaging 296.1 ± 17.80 kg initial body weight and 100 months of age. Animals were grouped according to the following treatments: bulls and cull cows, using a completely randomized design. Feeding behavior was evaluated by means of visual observations every five minutes during 24h. Results were subjected to analysis of variance by the F test (p &lt; 0.05) using the System for Statistical and Genetic Analysis - SAEG (version 9.1). The feeding behavior was expected not to affect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2 e 5.04.05.00-4 ethology; Fiber; Ruminants.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35528

Influence of rearing temperature on muscle growth and adipose tissue in Nile tilapia (Oreochromis niloticus) strains
Provedor de dados: 2
Autores: Salomão, Rondinelle Artur Simões; Santos, Vander Bruno dos; Mareco, Edson Assunção.
 This study aimed to evaluate the effect of temperature on the tissue growth of Red, GIFT and Supreme tilapia strains. Fingerlings of approximately 1.4 g from male populations were reared for a period of 60 days, in three recirculating systems, each system containing 6 water tanks of 0.5 m³, at three temperatures (22, 28 and 30ºC). Ten fish of each recirculation system and each temperature studied were sampled. Fishes have been anesthetized, euthanized and weighed. The samplings have been done from the dorsal musculature, caudal, visceral and ventral subcutaneous adipose tissue. Histological sections were prepared and evaluated to determine the diameter of the cells. The experimental design was completely randomized factorial 3 X 3 (strain X temperature)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia e recursos pesqueiros adipocytes; White fibers; Red fibers; GIFT strain; Red strain; Supreme strain.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35686

Inclusion of propylene glycol in the diet of sheep and its effect on their lambs’ protein and mineral metabolites
Provedor de dados: 2
Autores: Santos, Rogério Pereira dos; Macedo Junior, Gilberto de Lima; Silva, Simone Pedro da; Sousa, Luciano Fernandes de; Andrade, Marina Elizabeth Barbosa.
 The aim of this study was to assess the effect of propylene glycol (PG) added to the water sheep drank during lactation on protein and mineral metabolites of their suckling lambs. We assessed 24 lambs born to sheep fed levels of propylene glycol in the water (0; 1.5; 3.0 and 4.5%). The sheep were subdivided according to a completely randomized design, in a split-plot scheme. There was no interaction effect between lamb age and amount of PG provided to the sheep on the concentration of protein and mineral metabolites of the lambs. The concentration of total protein, globulin, and albumin: globulin ratio, uric acid and creatinine in the lambs was not affected by the inclusion of PG (p &gt; 0.05). The concentration of urea and magnesium in the lambs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição Animal; Nutrição Ruminantes albumin; Globulin; Sheep; Protein; Urea; Water.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35101

Cuts of dairy-origin cattle fed mesquite pod meal in replacement of corn
Provedor de dados: 2
Autores: Almeida, Marina de Paula; Souza, Evaristo Jorge Oliveira de; Véras, Antonia Sherlânea Chaves; Morais, Ítalo Marcos de Vasconcelos; Vítor, Danilo Ribeiro; Silva, José Ricardo Coelho da.
This study was carried out in order to assess commercial front and rear cuts of dairy-origin cattle fed mesquite pod meal. Twenty-five non-castrated male bovines (Holstein-Zebu), distributed according to a completely randomized design, with five animals per treatment, were used. The feed contained about 121.2 and 544.98 g kg-1 of crude protein and total digestible nutrients, respectively, and was composed of tifton grass hay, cornmeal, soybean meal, mesquite pod meal and mineral salt. The right half carcass of each animal was separated between the 5th and 6th ribs, in front and rear quarters, from which commercial cuts were obtained. There was no effect (p &gt; 0.05) as to the replacement of corn for mesquite pod meal on the weights and yields of front...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição de ruminantes; Avaliação de alimentos; Aditivos amino acids; Feedlot; Muscle; Weight; Yield.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35176

Growth performance, meat quality, and carcass characteristics in growing and fattening Hanwoo steers fed bentonite
Provedor de dados: 2
Autores: Young-Jik, Kim; Woo-Whan, Jang; Tae-Ho, Chung; In-Hag, Choi.
Thirty-six castrated, seven months-old Hanwoo steers (initial body weight: 184 ± 5.2kg) were assigned to three treatments over 23 months to evaluate the effects of supplementation with bentonite (0, 0.1 and 0.3%) on growth performance and carcass and meat characteristics. A completely randomized design with three replicates was used. The inclusion of a bentonite-supplemented diet had an influence on final weight, total weight gain, and average daily gain. Bentonite supplementation had no significant effect on proximate composition and meat quality. For carcass characteristics, there were no significant differences in yield traits and quality traits between treatments (but not cold carcass weight, marbling score, and quality grade). It was concluded that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bentonite; Hanwoo steers; Quality traits; Yield traits.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35405

Semen traits, testicular morphometry and histopathology of cadmium-exposed rabbit bucks administered methanolic extract of Phoenix dactylifera fruit
Provedor de dados: 2
Autores: Ansa, Anietie Archibong; Akpere, Odamesan; Imasuen, James Atekha.
 This study evaluated the effect of Cd on some male reproductive parameters; and explored the therapeutic potentials of methanolic extract of Phoenix dactylifera (MEPD) fruit in averting such reproductive damages. 45 rabbit bucks aged 24-28 weeks and weighing 1.41-1.43 kg was used. The rabbits were assigned to 5 treatment groups (control, Cd-only, Cd + 300 mg MEPD, Cd + 600 mg MEPD and Cd + 900 mg MEPD) in a completely randomized design. The rabbits were dosed with 3 mg CdCl2 kg-1feed for 7 days followed by MEPD for 56 days after every 72 hours. Result of semen evaluation indicates that semen volume, motility, libido, concentration, total ejaculate, viability and morphology were significantly reduced by Cd compared to the normal control group. Testis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal Science  Animal physiology and reproduction testis; Sperm; Heavy metal; Methanol; Plant extract.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32858

Time on feedlot and sexual effects on animal performance and characteristics of lamb’s meat
Provedor de dados: 2
Autores: Mazon, Madeline Rezende; Carvalho, Roberta Ferreira; Pesce, Domingos Marcelo Cenachi; Silva, Saulo da Luz e; Gallo, Sarita Bonagurio; Leme, Paulo Roberto.
For this research 48 male lambs were divided in randomized blocks in a factorial design, having as factors sexual condition (castrated or uncastrated) and time on feed (36 or 78 days). High grain diet was monitored daily to measure the performance of the animal nutrition. The characteristics of the carcass and meat were taken for the fatty acids profile and sensorial analysis. The effect of the factors as sexual condition and time on feed, and the interaction between them, were evaluated by analysis of variance using the GLM procedure of SAS software and the treatment averages were compared by Student's T test. The uncastrated animals presented greater weight gain and dry matter intake, better feed efficiency, and larger loin area. More time on feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2 / 5.04.05.01-2 castrated; Dorper; Fatty acids; Meat; Santa Inês; Sheep.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32749

Nutritional composition and aerobic stability of winter cereal silage at different storage times
Provedor de dados: 2
Autores: Leão, Guilherme Fernando Mattos; Jobim, Cloves Cabreira; Neumann, Mikael; Horst, Egon Henrique; Santos, Sthefany Kamile dos; Venancio, Bruno José; Santos, Leslei Caroline.
The objective of the experiment was to evaluate the nutritional composition, dry matter (DM) recovery and aerobic stability of winter cereal silages under different storage periods. The materials used were wheat (Triticum aestivum cv. BRS Gralha Azul), barley (Hordeum vulgare cv. BRS Brau), white oat (Avena sativa cv. URS Guará), black oat (Avena strigosa cv. Embrapa 139) and triticale (X Triticosecale IPR 11), in three storage periods: 60, 120 and 180 days. The experiment was conducted in a 5x3 factorial, completely randomized design, consisting of five forage species and three storage periods, with five replicates. In nutritional assessment, barley silage presented low values of acid detergent fiber (ADF; 331.2, 355.2 and 378.5 g kg DM-1 for 60, 120, 180...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia  Produção de alimentos conservados storage; Aerobic deterioration; DM recovery.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34270

Production and chemical composition of grasses and legumes cultivated in pure form, mixed or in consortium
Provedor de dados: 2
Autores: Tambara, Antonio Augusto Cortiana; Sippert, Micheli Regiani; Jauris, Gilberto Cardoso; Flores, Jorge Luís Carvalho; Henz, Éderson Luis; Velho, João Pedro.
The objective of this study was to assess the edible biomass and chemical composition of forages grown on pure form, as a grass mix, and in grass-legume consortia. The following species were tested: white oats (Avena sativa), black oats (Avena strigosa), ryegrass (Lolium multiflorum), forage peanut (Arachis pintoi), white clover (Trifolium repens), and red clover (Trifolium pratense). The experiment consisted of sixteen treatments arranged in a completely randomized design. The parameters measured were total dry matter (PMST), neutral detergent fiber (NDF), acid detergent fiber (ADF), and crude protein (CP). No significant differences in PMST were found among the consortia (p &gt; 0.05). Only the pure cultivated white clover (p &gt; 0.05) was comparable to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.00-8 Arachis pintoi; Avena sp.; Fiber; Lolium multiflorum; Protein; Trifolium sp.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34661

Characterization of beef cattle farming and the perspective for implementation of traceability
Provedor de dados: 2
Autores: Cavalcante, Diego Helcias; Campelo, José Elivalto Guimarães; Santos, Natanael Pereira da Silva; Ferreira, Raimundo Ribeiro; Fonseca, Wéverton José Lima; Evangelista, Amauri Felipe.
The objective of this study was to characterize the beef cattle farming profile in the State of Piauí for inference about the zootechnical record of animals for insertion into a traceability system. Data were collected through a semi-structured multiple choice questionnaire applied to 400 cattle breeders in all microregions of the state, in May and November 2012. The questions contained the following indicators: profile of the property and the breeder, herd conditions and technical conditions on herd registration. The cattle-raising scenario is predominantly characterized by family activity, with the majority of producers over 50 years of age, who are without great prospects for technological innovation, inserted in an environment where human resource...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências agrárias; Zootecnia animal identification; Family farming; Cattle.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36282

Nutritional value of sorghum silages
Provedor de dados: 2
Autores: Moura, Marielly Maria Almeida; Pires, Daniel Ananias de Assis; Costa, Renê Ferreira; Tolentino, Daniella Cangussú; Rigueira, João Paulo Sampaio; Sales, Eleuza Clarete Junqueira de.
 This study aimed to evaluate the nutritional characteristics and quality of silages of five sorghum genotypes, namely: Volumax, AG2005E, Qualimax, BRS610 and AG2501. The study was conducted at the Experimental Farm Unimontes, in the municipality of Janaúba, state of Minas Gerais. The treatments were distributed in a randomized block design with four replicates. Data were tested by analysis of variance andmeans were compared by Scott-Knott test at a significance level of 5%. The pH values ranged from 3.93 and 4.10. Genotypes differed in all studied nutritional characteristics (p &lt; 0.05). For the acid detergent fiber, differences were detected between the genotypes, AG2501 (35.66%), Volumax (34.89%), AG2005E (34.53%), Qualimax (32.39%) and BRS610...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ZOOTECNIA: FORRAGICULTURA preserved food; Genotypes; Nutritional quality.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32677

Agronomic performance and nutritive value of millet silages
Provedor de dados: 2
Autores: Moura, Marielly Maria Almeida; Pires, Daniel Ananias de Assis; Jayme, Diogo Gonzaga; Costa, Renê Ferreira; Rigueira, João Paulo Sampaio; Rodrigues, José Avelino Santos.
 The objective of this study was to assess agronomic characteristics and nutritional values of silages of millet genotypes. Planting was done in randomized blocks, with five replicates per genotype. Green matter yield for genotypes ADR 500 and CMS 01 was higher and similar to each other, with 40.16 and 41.36 t ha (p &gt; 0.05). There was no significant difference for dry matter yield, with the mean being 9.93 t ha (p &gt; 0.05). The silages were similar (p &gt; 0.05) as to pH, Aw and N-NH3/TN, presenting values of 3.92, 0.97 and 7.64%, respectively. There were no significant differences (p &gt; 0.05) concerning the bromatological composition of the silages of the different genotypes, with a mean of 30.74% of dry matter, 10.21% for crude protein and 58.69%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ZOOTECNIA: FORRAGICULTURA digestibility; Dry matter yield; Silage.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34430

Methods of body composition estimative of growing goats
Provedor de dados: 2
Autores: Resende, Kleber Tomas de; Fernandes, Marcia Helena Machado da Rocha; Hentz, Fernanda; Teixeira, Izabelle Auxiliadora Molina de Almeida; Garcia, Jose Americo.
 The objective of this study was to compare methods for estimative of body composition of goats based on tritiated water space technique (TOH), specific gravity (SG) of carcass and 9-11th ribs. Ten Toggenburg x Alpine intact male goat kids, from 5.3±0.4 to 25.9±1.3 kg of body weight (BW), were used to estimate body composition by: 1) direct method, 2) TOH method, 3) SG of the carcass and 4) SG of the 9-11th whole ribs. In addition, update linear equations for predicting body composition were developed using data from direct method. The TOH space overestimated water body composition on average 31%. The SG of the carcass and 9-11th ribs underestimated water empty body composition (%) on average 21 and 12%, respectively. In spite of its overestimate, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2 Zootecnia; 5.04.05.00-4 Produção Animal direct method; In vivo determination; Specific gravity; Tritiated water space.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33215

Fermentative characteristics and nutritional value of elephant grass silage added with dehydrated banana peel
Provedor de dados: 2
Autores: Brant, Lara Maria Santos; Pimentel, Paulo Roberto Silveira; Rigueira, João Paulo Sampaio; Alves, Dorismar David; Carvalho, Mateus Alves Macedo; Alves, Wagner Sousa.
The aim of this study was to evaluate the fermentative losses and nutritional value of elephant grass silages with the increasing of inclusion levels of dehydrated banana peel. The experiment was conducted in a completely randomized design, with six treatments and four replications, being the silage exclusively from elephant grass, and five levels of inclusion of banana peel to the elephant grass silage, as the following - 5; 10; 15; 20 and 25%, being added based on natural matter. The addition of the banana peel in the silage reduced linearly (p &lt; 0.05) the pH, the ammoniacal nitrogen and the losses of the fermentative process. In addition, the inclusion of banana peel increased linearly (p &lt; 0.05) the dry matter and non-fibrous carbohydrates. On...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.00-8; 5.04.04.01-6 co-product; Fermentation; Musa; Pennisetum purpureum.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33925

Effect of feeding Thymolina® powder on the carcass characteristics and morphology of small intestine in ross 308 broiler chickens
Provedor de dados: 2
Autores: Hosseini, Seyyedmousa; Chamani, Mohammad; Seidavi, Alireza; Sadeghi, Ali Asghar; Ansari-Pirsaraei, Zarbakht.
  In the present experiment, 320 one day old Ross 308 broiler chickens were used completely randomized design with 4 treatments, 4 replicates, and each replicate contained 20 broiler chickens. Experimental treatments include control, 0.5, 1, and 2% of Thymolina powder in chickens’ diet. Thymolina® is an anti-bacterial powder drug which is made by composing 4 medicinal plants. A significant difference observed between treatments in each parameter of the Intestinal morphology (villus height, villus width, crypt depth and epithelial thickness). Goblet cells number was not affected. Our findings indicated that using Thymolina® in the diet of broiler chickens causes improvements in carcass characteristics. Therefore, it may improve the carcass characteristics...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: : Broiler; Morphology; Ross 308; Small Intestine; Thymolina®.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32074

Nutritional value of dual-purpose wheat genotypes pastures under grazing by dairy cows
Provedor de dados: 2
Autores: Quatrin, Mauricio Pase; Olivo, Clair Jorge; Bratz, Vinicius Felipe; Alessio, Vinicius; Santos, Fabiene Tomazetti dos; Aguirre, Priscila Flores.
In the south of Brazil, one of the major limitations to milk production is the low forage availability during autumn and early winter. The use of dual-purpose wheat genotypes is one alternative to minimize the impact of low forage availability in addition to produce grains. Therefore, this study aimed to evaluate the nutritional value of two dual-purpose wheat genotypes (BRS Tarumã and BRS Umbu). Structural composition and forage nitrogen uptake were evaluated. The nutritional value of the forage was analyzed for mineral matter (MM), organic matter (OM), neutral detergent fiber (NDF), crude protein (CP), total digestible nutrients (TDN), in situ organic matter digestibility (ISOMD) and in situ dry matter digestibility (ISDMD). Differences in NDF (49.03 vs....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Winter cereal; Digestibility; Nitrogen uptake; Crude protein; Triticum aestivum.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34420

Correlation between performance and feeding behavior of feedlot lambs fed without roughage diet
Provedor de dados: 2
Autores: Cardoso, Elves de Souza; Santana Junior, Hermógenes Almeida de; Oliveira, Aracele Prates de; Ferreira, Antônio Hosmylton Carvalho de; Oliveira, Zeliana Fernandes de; Freitas, Tiago Brandão.
The objective was to evaluate the correlation between performance and feeding behavior of feedlot castrated Santa Inês lambs fed without roughage diet, weighing 20 ± 1,8 kg and four months of age (± 0,34). A completely randomized design was adopted. Correlations were obtained by Pearson’s linear correlation analysis and the t test, and processed on SAS software (version 9.2). The variables number of rumination chews per cud, number of cuds ruminated per day, speed of each chew, and number of rumination cuds per day were positively correlated with the variation in body weight (p &lt; 0.05). For number of cuds ruminated per day, a positive correlation was found with the variations in body weight. Initial and final body weights were positively correlated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.00.00.00-4; 5.04.00.00-2; 5.04.03.00-1 concentrate; Intake; Weight gain; Sheep.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33453

Genetic components of birth weight of texel sheep reared in extensive system
Provedor de dados: 2
Autores: Amarilho-Silveira, Fernando; Dionello, Nelson José Laurino; Mendonça, Gilson de; Motta, Jaqueline Freitas; Fernandes, Tiago Albandes; Silva, Nicholas da Silveira.
This study aimed to estimate the components of (co)variance, genetic and phenotypic parameters and trends for birth weight. We used 783 birth weight records, between 2012 to 2016, of Texel sheep reared in extensive system. The components of (co)variance and the genetic parameters were estimated using six different animal models, using the restricted maximum likelihood method (REML). The model that best fit the data was Model 3, with estimates of direct additive genetic variance of 0.004, maternal permanent environment variance of 0.164, heritability coefficient of 0.011 and phenotypic variation attributed to the maternal permanent environment of 0.394. For the genetic trend, we observed a genetic gain of 0.413% and for the phenotypic trend, a phenotypic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia  Genética e Melhoramento dos Animais Domésticos maternal permanent environment; Heritability; Sheep breeding; Direct additive variance.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36481

Intestinal carbohydrase activity and sodium-glucose transporter expression in layers fed diets containing wheat and rice brans supplemented with phytase
Provedor de dados: 2
Autores: Saki, Ali Asghar; Atrian, Alireza; Goudarzi, Sara Mirzaie; Khodakaramian, Gholam; Yousefi, Azam.
The effect of diets containing wheat and rice brans with or without phytase supplementation on performance, intestinal carbohydrase activities and mRNA expression of sodium-glucose transporter-1 (SGLT-1) in layers was studied. A total of 96 23-wk-old Hy-line W-36 were allocated in a completely randomized experimental design at random with 6 treatments and 4 replicate cages of 4 birds each. A control diet was used in this experiment and then it was formulated to contain 10% wheat bran and 15% rice bran. Then phytase (2 g kg-1; 1000 FTU kg-1) was added to each diet. Feed intake, egg mass, feed conversion ratio, shell weight, shell thickness and Haugh units were not influenced by brans or phytase supplementation (p &gt; 0.05). But egg production decreased in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bran; Intestinal enzyme activity; Layer hen; Performance.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31900

Forage yield of Coastcross-1 pastures inoculated with Azospirillum brasilense
Provedor de dados: 2
Autores: Aguirre, Priscila Flôres; Olivo, Clair Jorge; Rodrigues, Patricia Fernandes; Falk, Débora Ribeiro; Adams, Carine Beatriz; Schiafino, Helena Parcianello.
 The high cost of nitrogen fertilizers increases the expenses in pasture-based animal production. The inoculation with plant growth-promoting bacteria is an alternative to reduce the costs. This study evaluated the forage yield of Coastcross-1 pastures inoculated with Azospirillum brasilense, fertilized with different levels of nitrogen and subjected to cuts. The experiment was a factorial randomized block design with three replications. The factors were the inoculation (without inoculation, inoculated only at planting and reinoculated in the second year), levels of nitrogen (0, 100 and 200 kg ha-1 year-1 N) and seasons (spring, summer, fall and winter) when cuts were made. Forage yield, forage accumulation rate, botanical and structural pasture...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2 / 5.04.04.00-8 botanical composition; Cynodon dactylon; Diazotrophic bacteria.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36392

Chemical-physical characteristics of buffalo (Bubalus bubalis) meat subjected to different aging times
Provedor de dados: 2
Autores: Luz, Patrícia Aparecida Cardoso da; Jorge, André Mendes; Francisco, Caroline de Lima; Mello, Juliana Lolli Malagoli de; Santos, Carolina Toledo; Andrighetto, Cristiana.
The aim of this study was to evaluate the effects of different aging times on the meat characteristics from young Murrah buffaloes slaughtered at 20–24 months of age (experiment I; n=10) and Murrah buffalo heifers slaughtered at 32-36 months of age (experiment II; n=10), with the purpose of determining the best aging time to tenderize meat from both experiments. Samples of the longissimus thoracis muscle from buffaloes slaughtered at each age were aged for 7, 14, and 21 days (0±1°C). After this period, analysis of cholesterol, pH, cooking loss, shear force, myofibrillar fragmentation index, meat color, and fatty acid profile was performed. Aging greatly improved the tenderness (p &lt; 0.05) but caused a change in color (p &lt; 0.05), which, even without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.07.02.00-9 e 5.07.02.01-7 cholesterol; Fatty acids; Longissimus thoracis; Murrah; Tenderness.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36799

Production of laying hens in different rearing systems under hot weather
Provedor de dados: 2
Autores: Araujo Netto, Daniel; Lima, Héder José D'Ávila; Alves, Julia Rodrigues; Morais, Bianca Corrêa de; Rosa, Mauricio Silva; Bittencourt, Tatiana Marques.
 The environment is very important for the performance of laying hens; thus, techniques are required to improve production systems, providing better welfare for poultry and consequent increase in the quality of the final product, the egg. This study aimed to evaluate the effects of rearing system, on the floor and in cage, on the performance and egg internal and external quality of laying hens. A total of 320 Hysex Brown laying hens, with 34-43 weeks days of age, was distributed in a completely randomized design, with two treatments, floor and cage, with 10 replicates each. The parameters evaluated were: individual feed intake, egg production per replicate, feed conversion per dozen eggs, egg weight; weight and percentage participation of shell, albumen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia; Produção Animal; Meio ambiência e instalações. laying hens; Cage; Egg quality; Alternative system.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/37677

Mitochondrial D-loop sequence variation among Central Javanese Duck in Indonesia
Provedor de dados: 2
Autores: Susanti, R; Iswari, Retno Sri; Fibriana, Fidia; Sari, Retno Ika.
 This study was realized to determine the genetic variation of Central Javanese duck based on the D-Loop mtDNA gene. D-loop gene was amplified using PCR technique by specific primer and sequenced using dideoxy termination method with ABI automatic sequencer. ClustalW from MEGA-6.06 software program was employed for multiple alignments of nucleotide sequences. Nucleotide sequences of D-loop gene of mtDMA from the Central Javanese duck were aligned together with other Anas isolates from Genbank using ClustalW of MEGA-6.06 program. The estimation of genetic distance and phylogenetic tree construction were analyzed by Neighbor-Joining method, whereas the calculation of distance matrix was performed using Kimura 2-parameter. Multiple alignments obtained were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetics; Animal sciences mtDNA; D-loop; Central Javanese duck; Genetic variation.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34352

Phytase in diets with crude protein levels for commercial layers
Provedor de dados: 2
Autores: Pereira, Adriana Aparecida; Junqueira, Otto Mack; Griep Junior, Dirceu Neutzling; Lima Júnior, Dorgival Morais de; Sgavioli, Sarah; Morais, Socorro.
 The aim of this study was to evaluate the action of the phytase enzyme in diets formulated with variations in the crude protein content on performance and egg quality of commercial layers. A total of 336 commercial layers were housed at eight birds per cage in a 3 × 2 factorial arrangement with seven replicates. Treatments consisted of four crude-protein levels (17, 15, and 13%) and two enzyme levels (0 and 500 FTU kg-1 diet), distributed in a completely randomized design. Feed intake, egg production, feed conversion per dozen eggs and per kilogram, egg weight and mass, specific gravity, eggshell thickness, and Haugh unit were measured over five 28-day periods. The performance of commercial layers fed the diet containing 13% crude protein worsened,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phosphorus; Chicken; Nitrogen; Eggs.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33097

Brazil nut oil in diets for breeder cocks
Provedor de dados: 2
Autores: Rufino, João Paulo Ferreira; Cruz, Frank George Guimarães; Melo, Ramon Duque; Feijó, Julmar da Costa; Melo, Lucas Duque; Costa, Ana Paula Guimarães Cruz; Bezerra, Natalia dos Santos.
 This study aimed to evaluate the inclusion of Brazil nut oil in diets for breeder cocks on performance, semen analyses, biochemical serum profile and testicular morphology. Forty-two Rhode Island Red breeder cocks with 40 weeks of age were used. The experimental design was completely randomized consisting of seven levels of Brazil nut oil (0; 0.30; 0.60; 0.90; 1.20; 1.50 and 1.80%) in the diets. Data collected were evaluated by polynomial regression. Differences (p &lt; 0.05) were detected in feed conversion, semen volume, motility, vigor, pH, swirling and concentration, in which the inclusion of Brazil nut oil in the diets improved the reproductive performance. Differences (p &lt; 0.05) were also detected in the biochemical serum profile (triglycerides,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additive; Fatty acids; Metabolism; Reproductive performance.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/37472

Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep
Provedor de dados: 2
Autores: Saghi, Davoud Ali; Shahdadi, Ali Reza.
The data set for estimation of genetic and phenotypic parameters of reproductive traits in Kordi sheep were collected from 1996 to 2013. The reproductive traits included age at first lambing (AFL), number of lambs born (NLB/EL) and weaned (NLW/EL) per ewe in each lambing, total weight of lambs born (TWLB/EL) and weaned (TWLW/EL) per ewe in each lambing, total number of lambs born (TNLB) and weaned (TNLW) per ewe, total weight of lambs born (TWLB) and weaned (TWLW) per ewe. The genetic parameters were estimated through restricted maximum likelihood method using WOMBAT. The effects of environmental factors (year of lambing, type of birth, maternal age at lambing) on all reproductive traits were significant (p &lt; 0.01). Direct heritability, maternal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heritability; Direct and maternal effect; Genetic and phenotypic correlation; Animal models.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35378

Cheese and milk quality of F1 Holstein x Zebu cows fed different levels of banana peel
Provedor de dados: 2
Autores: Melo, Marco Túlio Parrela de; Rocha Júnior, Vicente Ribeiro; Caldeira, Luciana Albuquerque; Pimentel, Paulo Roberto Silveira; Reis, Sidnei Tavares dos; Jesus, Diego Lucas Soares de.
This study aimed to evaluate the effects of the inclusion of different levels of sun-dried banana peel in the diet for crossbred cows on the quality of Minas fresh cheese and milk. Diets consisted of 0, 15, 30, 45 and 60% replacement of sorghum silage with banana peel. Ten cows were assigned to two 5 x 5 Latin squares experimental design. Milk samples were taken from each cow and analyzed for composition. Milk was pasteurized for the production of Minas fresh cheese, which was weighed to determine the yield and analyzed for texture, physical and chemical characteristics and consumer acceptance test. Milk urea nitrogen had a quadratic effect with minimum point at 43.76% replacement of silage with banana peel. The remaining items evaluated in the composition...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia/Produção Animal banana crop; Milk processing; By-products.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33883

Comparing non-linear mathematical models to describe growth of different animals
Provedor de dados: 2
Autores: Teleken, Jhony Tiago; Galvão, Alessandro Cazonatto; Robazza, Weber da Silva.
The main objective of this study was to compare the goodness of fit of five non-linear growth models, i.e. Brody, Gompertz, Logistic, Richards and von Bertalanffy in different animals. It also aimed to evaluate the influence of the shape parameter on the growth curve. To accomplish this task, published growth data of 14 different groups of animals were used and four goodness of fit statistics were adopted: coefficient of determination (R2), root mean square error (RMSE), Akaike information criterion (AIC) and Bayesian information criterion (BIC). In general, the Richards growth equation provided better fits to experimental data than the other models. However, for some animals, different models exhibited better performance. It was obtained a possible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight gain; Richards model; Goodness of fit.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31366

Nile tilapia culture under feeding restriction in bioflocs and bioflocs plus periphyton tanks
Provedor de dados: 2
Autores: Cavalcante, Davi de Holanda; Lima, Francisco Roberto dos Santos; Rebouças, Vanessa Tomaz; Sá, Marcelo Vinícius do Carmo e.
Intensive aquaculture systems may cause pollution in water bodies because their effluents have high levels of nutrients. The use of substrates for periphyton and the manipulation of the C: N ratio of water are technologies that can be employed to increase aquaculture yield with environmental sustainability. The present study has aimed at determining whether feeding restriction could stimulate a greater use of natural food in three different Nile tilapia rearing systems (green water, bioflocs and biophyton), without growth performance impairment. There were nine treatments with four replicates each one (36 experimental units). The animals were raised in conventional (green water) tanks, C: N-ratio adjusted tanks (bioflocs) and bioflocs + periphyton...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquicultura aquaculture; Water quality; Eutrophication.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33574

Multiple supplements containing spineless cactus enriched with urea forcattle
Provedor de dados: 2
Autores: Costa, Cleber Thiago Ferreira; Ferreira, Marcelo de Andrade; Campos, José Maurício de Souza; Silva, Janaina de Lima; Andrade, Rafael de Paula Xavier de; Conceição, Maria Gabriela da.
This study was realized to evaluate the effect of the ‘multiple supplements’ containing spineless cactus enriched with urea (0, 1, 2 and 3% on dry matter basis - DM) as a replacement to a traditional supplement (control) on ruminal parameters and microbial protein synthesis in crossbred steers. Five steers(½ Holstein x Zebu) can nulated in the rumen, with an average initial body weight of 240 ± 22.1 kg were used in a 5 × 5 Latin square. A quadratic effect was observed for DM intake and N retention, with maximum values of 6.97 kg d-1 and 50.9 gd-1 with the inclusion of 1.8 and 2.1% urea, respectively. Maximum concentrations of 16.2, 23.2 and 24.3 mg dL-1of N-NH3were recorded in animals fed spineless cactus enriched with 1, 2, and 3% of urea. There was a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avaliação de alimentos; Nutrição de ruminantes; Produção animal intake; Rumen pH; Supplementation; Volatile fatty acids.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34427

Assessing the nutritional value of agroindustrial co-products and feed through chemical composition, in vitro digestibility, and gas production technique
Provedor de dados: 2
Autores: Olivo, Paula Martins; Santos, Geraldo Tadeu dos; Ítavo, Luís Carlos Vinhas; Silva Junior, Ranulfo Combuca da; Leal, Eduardo Souza; Prado, Rodolpho Martin do.
Agroindustrial co-products are a viable alternative for use in animal nutrition. Tests were conducted using eight different types of co-products and feed to evaluate the chemical composition, in vitro digestibility of dry matter, crude protein and neutral detergent fiber, and gas production by them. The co-products tested were: coffee hulls; pelleted citrus pulp; grape residue; soybean hulls; cottonseed; cassava foliage; and foods usually supplied to ruminants: corn silage and ground corn concentrate. Data of in vitro digestibility of dry matter, crude protein and neutral detergent fiber were tested by analysis of variance using the least square method; the results of gas production were interpreted by a non-linear regression by the Gauss-Newton method;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia; Nutrição de Ruminantes alternative feed; Degradation; Fermentation; Gas production.s.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34024

Fish by-product meal in diets for commercial laying hens
Provedor de dados: 2
Autores: Silva, André Ferreira; Cruz, Frank George Guimarães; Rufino, João Paulo Ferreira; Miller, Waldo Mateus Plácido; Flor, Nathália Siqueira; Assante, Rafael Torres.
 This study aimed to evaluate the increasing levels (0, 1, 2, 3 e 4%) of fish by-product meal in diets for laying hens on performance, egg quality and economic analysis. A total of 160 Dekalb White hens with 52-wk old were distributed in a completely randomized design with five treatments and four replicates of eight birds each. The experiment lasted 84 days divided into four periods of 21 days. Estimates of fish by-product meal levels were determined by polynomial regression. Differences (p &lt; 0.05) were detected for all variables of performance, in egg weight, yolk and albumen percentage, yolk and albumen height, feed cost and production cost, in which the inclusion of fish by-product meal in the diets showed better results. It can be concluded that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feed; Economic available; Feed cost; Lipid profile; Performance.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34102

Supplementation of extract of Lafoensia pacari in the diet of semi heavy laying hens
Provedor de dados: 2
Autores: Moreira, Janaina da Silva; Stringhini, José Henrique; Conceição, Edemilson Cardoso da; Arhnold, Emmanuel; Noleto, Raiana Almeida; Carvalho, Fabyola Barros de.
 It was intended to evaluate the supplementation of Lafoensia pacari standardized in tannins extract in the diet of laying hens on the performance, internal and external quality of eggs and metabolism of the feed nutrients. A total of 168 Isa Brown laying hens, aged 24 weeks, with the mean weight of 2.6 kg and the mean posture rate of 87% were used during 4 periods of 28 days each. The treatments consisted of Halquinol performance-enhancing antibiotic, Mannanoligosaccharide (MOS) prebiotic and three levels of pacari extract – 1,000, 2,000 and 3,000 mg kg-1of feed. The experimental design was completely randomized, with six treatments and seven replicates of four hens each. The pacari standardized in tannin extract presented a percentage of albumen and an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2; 5.04.03.00-1 egg production; Metabolism; Performance; Phytogenic additive.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32209

Effect of simulated acid rain on the survival, mortality, behaviour and morphology of African mud catfish Clarias gariepinus (Burchell, 1822)
Provedor de dados: 2
Autores: Mustapha, Moshood; Mohammed, Zainab Olayide.
This study simulated acidic habitat for different life stages of Clarias gariepinus to know the effect on survival, mortality, morphology and behaviour. The fish were exposed to pHs 3, 4, 5, 6 and 8.01 (control) for 35 days. 100% mortality was recorded for all the life stages in pH 3, and 80, 62 and 36% of mortality of fingerlings, juveniles and adults respectively were recorded in pH 4. In pH 5, 30, 26 and 12% mortalities of fingerlings, juveniles and adults respectively were recorded and at pH 6 mortalities of fingerlings, juveniles and adults were 12, 10 and 4% respectively. Control pH mortalities were 10, 6 and 2% for fingerlings, juveniles and adults respectively. Mortality was due to lack of oxygen uptake, stress and circulatory collapse. All these...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fingerlings; Juveniles; Adults; PH; Stress; Sulphur oxides.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36900

Evaluation of biochemical parameters and productive performance of japanese quail in response to the replacement of soybean meal with canola meal
Provedor de dados: 2
Autores: Saki, Ali Asghar; Goudarzi, Sara Mirzaie; Ranjbaran, Masoud; Ahmadi, Ahmad; Khoramabadi, Vahid.
The present study was conducted to evaluation the different levels canola meal (CM) replacement by soybean meal (SBM) in Japanese quails diets on productive performance, egg quality trails and blood parameters including blood protein, minerals concentration, liver enzymes and thyroid hormones. In this study, 160 of Japanese quails in second laying phase from 46 to 56 weeks of age were divided in four treatments with four replicates and 10 quail in each per replicate, on a completely randomized design (CRD).Treatments consisted:T1) control (without CM), T2, T3 and T4) replacing 30, 60 and 90% of SBM with CM respectively. The results were shown no significant variation in body weight between treatments in initial and end of the experiment (p &gt; 0.05)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Japanese quail; Canola meal; Egg quality; Performance; Liver enzymes; Soybean meal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31487

Digestibility and physico-chemical characteristics of acid silage meal made of pirarucu waste in diets for commercial laying hens
Provedor de dados: 2
Autores: Batalha, Oscarina de Souza; Alfaia, Sonia Sena; Cruz, Frank George Guimarães; Jesus, Rogério Souza de; Rufino, João Paulo Ferreira; Costa, Valcely Rocha.
The objective of this study was to evaluate the effects of acid silage meal made of pirarucu waste in diets for commercial laying hens on apparent digestibility and energy metabolism. Seventy-two Hisex White hens with 71 weeks of age were assigned to a completely randomized with two treatments (control diet and diet with 3% pirarucu waste acid silage) with six replicates of six birds each. The ensiled biomass was light brown in color, showing acidified aroma; creamy consistency; 4.38±0.11 pH; 84.16% dry matter; 40.06% crude protein; 26.82% ether extract; 9.31% mineral matter, 65.16 g kg-1 calcium and 22.90 g kg-1 phosphorus. Differences (p &gt; 0.05) were detected in digestibility of crude protein, non-fiber carbohydrates (soluble carbohydrates),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative food; Fish waste; Metabolizable energy; Nutrients  silage.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35112

Evolution and factors influencing somatic cell count in raw milk from farms in Viçosa, state of Minas Gerais
Provedor de dados: 2
Autores: Quintão, Leonardo Cotta; Cunha, Adriano França da; Bragança, Lindomar José; Coelho, Kamila Soares; Nunes, Mariana Fonseca; Saraiva, Luís Henrique Gouvêa.
The somatic cell count (SCC) of refrigerated raw milk reflects the occurrence of mastitis in the herd and the management of rural property. Therefore, this study aimed to evaluate the SCC of the refrigerated raw milk and its determinant factors in dairy properties of Viçosa, State of Minas Gerais. Monthly, milk samples were taken from 44 cooling tanks during 2012. A structured questionnaire was applied to evaluate the production and management characteristics of the herds. There was a significant variation (p &lt; 0.05) in the mean SCC of the milk, which was lower from June to August. Higher mean SCC and percentages of samples above the limit set by the legislation were observed in months of higher rainfall and ambient temperature (p &lt; 0.05). Mechanical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.05.05.00-9 environment; SCC; Mastitis; Milking; Seasonality.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35364

Effect of using the Matrix Values for NSP-degrading enzymes on performance, water intake, litter moisture and jejunal digesta viscosity of broilers fed barley-based diet
Provedor de dados: 2
Autores: Moftakharzadeh, Seyed Adel; Moravej, Hossein; Shivazad, Mahmud.
In this study, we have evaluated the effect of three multi-enzymes nutrient matrix values and compared the results with that fed barley and the corn diets without enzyme. In entire period, addition of all enzymes to the barley-based diet significantly (p &lt; 0.05) increased feed intake (FI) and the highest intake was for birds that fed enzyme A (p &lt; 0.05). Overall, from 0 to 42 days, average daily gain (ADG) was significantly (p &lt; 0.05) increased by enzyme and birds fed enzyme A had the highest body weight (p &lt; 0.05). Generally, from 0 to 42 d of age, feed conversion ratio (FCR) was significantly (p &lt; 0.05) improved when enzyme added to barley-based diet, but there were no significant differences among diets containing enzymes A and C and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal and poultry Science carbohydrase; Broiler; Performance; Nutrient matrix value.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33070

Dry matter digestibility and metabolizable energy of crude glycerines originated from palm oil using fed rooster assay
Provedor de dados: 2
Autores: Legawa, Astiari Tia; Wattanasit, Sutha; Wattanachant, Chaiyawan.
A study was conducted to determine the dry matter digestibility, gross energy (GE), the nitrogen-corrected apparent metabolizable energy (AMEn), and the nitrogen-corrected true metabolizable energy (TMEn) of two crude glycerine from two different sources. The first crude glycerine (CG1) was from a large scale biodiesel producer with high content of glycerol (89.49%) and low content of crude fat (1.73%), meanwhile the second crude glycerine (CG2) was from a medium scale biodiesel producer with lower content of glycerol than CG1 (38.36%) and high content of crude fat (23.63%). Fed rooster assay based on Sibbald (1976) was used in the experiment. The experimental feed consisted of ground corn and three levels of crude glycerine (0, 10, and 20%). Twenty four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal Science; Poultry nutrition large scale biodiesel producer; Medium scale biodiesel producer; Sibbald method.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35082

Determining a model to estimate leaf area in Pornunça (Manihot sp.) using morphometric measures
Provedor de dados: 2
Autores: Silva, Guilherme de Lira Sobral; Carneiro, Maria Socorro de Souza; Edvan, Ricardo Loiola; Andrade, Alberício Pereira de; Medeiros, Geovergue Rodrigues de; Cândido, Magno José Duarte.
 Pornunça is a species of the genus Manihot that has been cultivated as an option for animal feeding in the Brazilian semi-arid. Leaf area (LA) is important to determine forage plant growth, whose evaluation model has to meet the following characteristics: practicality, precision and low cost. The objective of this study was to set a model to determine the leaf area in Pornunça (Manihot sp.) from morphometric measurements of the leaf. The experimental design was in randomized blocks with three methods for determination of leaf area, and three blocks, with 144 replicates (leaves). For the determination of LA, the direct method (FAReal), treadmill leaf area meter (Li-Color 3100©) and linear dimensions were used. Data were subjected to regression analysis....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2; 5.04.04.00-8; 5.04.04.01-6 cgrowth; Plant; Morphology; Semiarid.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36447

Grazing behavior and spatial distribution of feces of Young bulls in silvopastoral systems and Marandu monoculture in the Pre-Amazon region
Provedor de dados: 2
Autores: Araújo, Ricardo Alves de; Rodrigues, Rosane Cláudia; Costa, Clésio dos Santos; Santos, Francisco Naysson de Sousa; Cutrim Júnior, José Antonio Alves; Jesus, Ana Paula Ribeiro de; Shigaki, Francirose; Araújo, Jocélio dos Santos.
The objective was to evaluate the grazing behavior and the spatial distribution of feces of F1 young bulls from the cross between Nellore and Guzera on pastures of Urochloa brizantha cv. Marandu in silvopastoral systems composed of babassu palm (Attalea speciosa) and Marandu monoculture in the Pre-Amazon region of the state of Maranhão. Animals were evaluated in four systems consisting of 0, 80, 131, 160 palms ha-1, characterizing monoculture (mono), low density of palm trees (LD), medium density of palm trees (MD) and high density of palm trees (HD) during the rainy (RE) and dry (DE) periods. Five animals (repetitions) were used in each system, with 231-303 days of age and 180±15 kg body weight. Determinations of behavioral patterns were made by instant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.05.02-0 babassu; Sward structure; Dispersal; Idle; Palm trees; Rumination.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33085

Efficiency of the use of ryegrass by heifers in response to the receival of supplement
Provedor de dados: 2
Autores: Ribeiro, Laila Arruda; Rocha, Marta Gomes da; Pötter, Luciana; Sichonany, Maria José de Oliveira; Silva, Mônique Foggiato da; Hundertmarck, Anelise Pereira.
The intensity and frequency of defoliation of ryegrass (Lolium multiflorum Lam.) by beef heifers exclusively grazing or receiving corn grain or extruded commercial product with fat as supplement were evaluated. The grazing method was put-and-take stocking. The experimental design was completely randomized following a repeated measure arrangement, three treatments and two area replications. The phyllochron of ryegrass was 140.1 and 303.4°GD the leaf lifespan. The intensity (67.0 %) and the frequency of defoliation (6.4 days) were similar, regardless of supply or no of energetic supplement for grazing heifers. The defoliation frequency indicates that the heifers can return about 3.3 times to the same tiller during the leaf lifespan. Considering the different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.00-8 frequency of defoliation; Corn grain; Extruded fat; Intensity of defoliation; Lolium multiflorum Lam.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33235

Repeatability, number of harvests, and phenotypic stability of dry matter yield and quality traits of Panicum maximum jacq.
Provedor de dados: 2
Autores: Fernandes, Francisco Duarte; Braga, Gustavo José; Ramos, Allan Kardec Braga; Jank, Liana; Carvalho, Marcelo Ayres; Maciel, Giovana Alcântara; Karia, Claudio Takao; Fonseca, Carlos Eduardo Lazarini.
Selection of superior forage genotypes is based on agronomic traits assayed in repeated measures. The questions are how repeatable the performance of individual genotypes is and how many harvests are needed to select the best genotypes. The objectives were to estimate repeatability coefficients of dry matter yield (DMY) and forage quality, their phenotypic stability and the number of harvests needed for an accurate selection. Two randomized complete block design experiments data with 24 genotypes each, undergoing 12 and 16 harvests, over a period of 2 and 3 years, respectively, were used. The DMY repeatability estimates ranged from 0.42 to 0.55, suggesting a low heritability. The mean numbers of repeated measures were 5 and 7 harvests for 0.80 and 0.85...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 4.3.3.3 - Melhoramento de Plantas Forrageiras e Produção de Sementes repeated measures; Selection efficiency; Selection effectiveness.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32915

Nutritional characteristics of sorghum hybrids hay (sorghum sudanense x sorghum bicolor)
Provedor de dados: 2
Autores: Lima, Mário Henrique Melo e; Pires, Daniel Ananias de Assis; Moura, Marielly Maria Almeida; Costa, Renê Ferreira; Rodrigues, José Avelino Santos; Alves, Kamila Antunes.
This study evaluated the nutritional characteristics of hay of nineteen hybrids between sorghum and Sudan grass. The experimental design was a randomized block with nineteen treatments and three replications. The chemical characteristics of the respective hays were analyzed 52 days after sowing and 45 and 49 regrowth days. Data were analyzed by analysis of variance, and when the F test was significant, the treatment means were compared by the Scott and Knott test at 5%. Genotypes 1013026 and 1014020 showed similar dry matter content. As for ether extract content, the highest values ranged from 2.20 to 2.66%. Higher values of minerals were observed in hybrids 1013026 and 1011005. In relation to crude protein, higher content values were reported for hybrids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição animal; Forragicultura; Produção Animal sudan grass; Chemical composition; Digestibility.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32524

Appraisal of purple coneflower (Echinacea purpurea) extract on production performance, internal organs, and gut microflora of japanese quail
Provedor de dados: 2
Autores: Seifi, Saeed; Khoshbakht, Rahem; Hajati, Hosna; Gilani, Ali.
An experiment was carried out to evaluate the effects of Echinacea purpurea (EP) extract at 5 levels (0, 0.25, 0.5, 1 or 2 mL L-1 of drinking water) on performance, internal organs and gut microflora of Japanese quail (Coturnix coturnix Japonica). The results showed that EP extract decreased feed intake and body weight gain of quails. The feed conversion ratio of quails fed with EP extract at the level of 0.5 ml L-1 drinking water was significantly decreased compared to the control group. Adding EP extract at the levels of 0.25, 0.5 or 1 mL L-1 drinking water decreased carcass yield of the birds (p &lt; 0.05). The relative weight of internal organs of the birds fed different levels of EP extract was not significantly different. Birds consumed EP extract at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Echinacea purpurea; Japanese quail; Performance; Gut microflora.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/37230

Carcass characteristics and sensorial evaluation of meat from Nellore steers and crossbred Angus vs. Nellore bulls
Provedor de dados: 2
Autores: Barcellos, Vinicius Cunha; Mottin, Camila; Passetti, Rodrigo Augusto Cortêz; Guerrero, Ana; Eiras, Carlos Emanuel; Prohmann, Paulo Emilio Fernandes; Vital, Ana Carolina Pelaes; Prado, Ivanor Nunes do.
This study evaluated animal performance, carcass characteristics and meat quality of 36-month old Nellore steers finished in pastures (n = 10) and 20-month old Angus vs. Nellore bulls finished in feedlot (n = 10). Final body weight, carcass weight, characteristics, conformation and fat thickness, were higher (p &lt; 0.001) for the Nellore steers than for Angus vs. Nellore bulls. Water losses during chilling (24 hours, 4oC) were lower (p &lt; 0.05) for Nellore steers than for the Angus vs. Nellore bulls. Muscle percentage on the 6th rib was higher (p &lt; 0.05) for the Nellore steers than for Angus vs. Nellore bulls; while bone percentage was lower (p &lt; 0.05) for Nellore steers. After 7 and 14 days of ageing, the L* meat value was higher for the Nellore...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2 Brazil; Consumer acceptability; Fattening system; Genetic groups; Meat quality; Sexual class.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36692

Underwater structures for periphyton in bioflocs tanks for Nile tilapia submitted to feed restriction
Provedor de dados: 2
Autores: Cavalcante, Davi de Holanda; Lima, Francisco Roberto dos Santos; Rebouças, Vanessa Tomaz; Sá, Marcelo Vinícius do Carmo e.
The objective of the present work was to assess the possible benefits of the installation of underwater structures for periphyton in bioflocs tanks for Nile tilapia, Oreochromis niloticus, submitted to feed restriction (artificial diet). The experimental treatments evaluated were: (1) BFT: bioflocs technology for aquaculture with no feed restriction; (2) BFT-30: the same as (1) but with feed restriction at 30%; (3) BP: biophyton technology for aquaculture, that is, integration between bioflocs and periphyton in the same rearing unit, with no feed restriction; (4) BP-30: the same as (3) but with feed restriction at 30%. The underwater structures for periphyton in the BP and BP-30 tanks were not able to reduce the concentrations of ammonia, nitrite, nitrate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquicultura aquaculture; Bioflocs; Environmental sustainability.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33122

Silage quality of sorghum and Urochloa brizantha cultivars monocropped or intercropped in different planting systems
Provedor de dados: 2
Autores: Ribeiro, Matheus Gonçalves; Costa, Kátia Aparecida de Pinho; Souza, Wender Ferreira de; Cruvinel, Welma Santos; Silva, Jessika Torres da; Santos Júnior, Divino Rosa dos.
 Recently it has emerged a technique for silage production of intercropping systems of annual crop with forage through crop-livestock integration, aiming to reduce the deficit forage in the offseason. The study was conducted to evaluate the fermentation characteristics and nutritional value of silage of sorghum and Urochloa brizantha cultivars monocropped or intercropped in different planting systems. The experiment was a randomized block design, with three replications, in a 3x2+4 factorial arrangement, with three cultivars of Urochloa brizantha (Marandu; Xaraes and Piata) intercropped with grain sorghum in two planting systems (row and between rows) and four monocrops (Sorghum, Marandu palisadegrass, Xaraes palisadegrass and Piata palisadegrass). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.00-8 conservation; Digestibility; Fermentation; Crop-livestock integration.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33455

Estimation of genetic and phenotypic trends for dairy traits of Gyr and Guzerá breeds
Provedor de dados: 2
Autores: Rangel, Adriano Henrique do Nascimento; Araújo, Thalita Polyana Monteiro; Lima, Guilherme Ferreira da Costa; Borba, Luiz Henrique Fernandes; Peixoto, Maria Gabriela Campolina Diniz; Lima Júnior, Dorgival Morais de.
 Milk production has high economic importance in dairy cattle production systems, which justifies its inclusion in genetic breeding programs. The objective of this study was to evaluate the genetic and phenotypic trends of dairy traits in Gyr (167 lactations) and Guzerá (148 lactations) breeds in the State of Rio Grande do Norte (RN). Milk, fat and protein production obtained from monthly dairy controls were the traits evaluated. The expected differences in progeny (DEPs) for these traits were estimated using an animal model. From the means of phenotypic values and DEPs, we estimated the genetic and phenotypic trends in linear regressions as a function of the year of calving of the animal. Positive genetic and phenotypic trends were observed for Gyr (26.8...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic progress; Milk production; Selection; Zebu.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36685

Growing tropical forage legumes in full sun and silvopastoral systems
Provedor de dados: 2
Autores: Araújo, Saulo Alberto do Carmo; Silva, Tatiana Oliveira da; Rocha, Norberto Silva; Ortêncio, Marluci Olício.
Growth was evaluated three tropical forage legumes in two cropping systems: silvopastoral system (SSP) and full sun. A completely randomized design was adopted in factorial three legumes (estilosanthes cv. Campo Grande (Stylozanthes macrocephala x Stylozanthes capitata), tropical kudzu (Pueraria phaseoloides (Roxb.) Benth) and macrotiloma (Macrotyloma axillare cv. Java)) x two farming systems, with 4 repetitions. A eucalyptus SSP already deployed, with spatial arrangement of 12 x 2 m between trees was used. Legumes were planted in January 2014 a uniform cut being made in May 2014. The court assessment was carried out 125 days after the uniformity cut. There was difference for mass production of dry legumes (PMMSL) between cultivation systems, evidencing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.00.00.00-4; 5.04.00.00-2 Fabaceae; Shading; Forage production; Chemical composition.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32537

Freshwater gastropods in the Northern littoral mesoregion of Espírito Santo, Brazil
Provedor de dados: 3
Autores: Souza, Marco Antônio Andrade de.
 Studies on the distribution of molluscs in Brazilhave been conducted since the beginning of the twentieth and the knowledge of the species distributed in the country represent important findings, which contribute to the understanding of human diseases and those of veterinary importance, transmitted by them. In order to verify the distribution of freshwater gastropods in Espírito Santo, a malacological surveywas carried out in nine municipalities that comprise the Northern mesoregion of the State, between January 2010 and February 2015. Initially the water collections occurring in the municipality were verified and the lotic systems at different levels of use and conservation were determined. Molluscs were collected monthly using a hand net adapted to a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.00.00.00-6 Ciências Biológicas; Plicada 2.04.00.00-4 Zoologia; 2.13.03.00-2 Entomologia e Malacologia de Parasitos e Vetores; Zoology; Invertebrates; Molluscs; Habitats diversity; Ecology Limnologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34631

Analysis of social and environmental practices related to conscious consumption of students from public education of Sertão Pernambucano, Brazil
Provedor de dados: 3
Autores: Cavalcante, Anna Fernanda Beatriz Amorim; Silva, Edevaldo; Tavares, Robson Victor.
This research aimed to analyze socio-environmental practices related to the conscious consumption of students of Sertão Pernambucano. A total of 174 high school students from two public schools were interviewed through a 29-item Likert-type measurement scale with five response levels. Among the students, 62.4% were female and 37.6% were male, aged between 15 and 20 years. It was found that 5.8% of the students were careful to take into account if the product residues were recyclable, 40.0% showed indifference or little commitment to use as few shopping bags as possible and the minority (8.3%) of the students used to separate the waste by categories. 47.9% of the students affirmed to reuse draft paper and 55.9% save gift paper for future packaging. Few have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 92700004; 7.08.00.00-6 human activity; Education; Sustainability. 92700004; 7.08.07.00-0.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35855

Opportunistic diet of Triportheus nematurus (Characiformes: Triportheidae) in Southern Pantanal ponds: influences of temporal availability and abundance of resources
Provedor de dados: 3
Autores: Lopes, Douglas Alves; Vieira, Kelly Regina Ibarrola; Mota, Rafael da Silva; Souza, Mateus Rojas Franco de; Costa, Fábio Edir dos Santos; Paiva, Fernando.
 The aim of this study was to investigate the diet composition and feeding strategies of Triportheus nematurus at the Miranda-Abobral floodplain region and evaluate if the temporal phenomenon of the flood pulse has influenced in the diet composition of the species. The fishes were sampled quarterly – between August/2014 and July/2016 – in the marginal ponds located in the Estrada Parque (MS 184). The feeding habits of T. nematurus was characterized as omnivorous and its opportunistic feeding behaviour, since its diet is composed of different resources along of the year. Insects and organic matter were the most important items during the drought period; plant material (leaves and roots) and Euglenophyceae algae were more expressive during the inundation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecologia - Ecologia de Ecossistemas feeding; Floodplain; Temporal variations; Neotropical fish. Ecologia Trófica.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36391

First record of Hamaticolax scutigerulus (Copepoda: Bomolochidae) in Brazil, ectoparasite of the spotted goatfish Pseudupeneus maculatus (Actinopterygii: Mullidae)
Provedor de dados: 3
Autores: Cardoso, Lucas; Martins, Mauricio Laterça; Lacerda, Ana Carolina Figueiredo; Cadorin, Douglas Ismael; Bonfim, Carolina Nunes Costa; Oliveira, Ricardo Luís Mendes de.
 Bomolochidae Claus, 1875 is a copepod family with worldwide distribution that parasitizes marine fishes. This study provides the first report of Hamaticolax scutigerulus (Wilson, 1935) (Copepoda: Bomolochidae) in the spotted goatfish Pseudupeneus maculatus (Bloch, 1793), in the coastal waters of Pernambuco, northeastern Brazil. Prevalence of 35%, mean intensity of infestation of 1.9±1.3 and mean abundance of 0.7±1.2 were found. The setae and spines of the leg armor of the Hamaticolax species were analyzed to identify the present species. 
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.06.00.00-1 Marine fish; Ectoparasites; Coast of Pernambuco. Parasitologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34100

Antibacterial activity of different types of snake venom from the Viperidae family against Staphylococcus aureus
Provedor de dados: 3
Autores: Canhas, Isabela Nascimento; Heneine, Luiz Guilherme Dias; Fraga, Thaís; Assis, Débora Cristina Sampaio de; Borges, Márcia Helena; Chartone-Souza, Edmar; Nascimento, Andréa Maria Amaral.
Toxins and venoms produced by living organisms have exhibited a variety of biological activities against microorganisms. In this study, we tested seven snake venoms from the family Viperidae for antibacterial activity and the activities of reversal of antibiotic resistance and inhibition of biofilm formation against 22 clinical isolates of Staphylococcus aureus. Bothrops moojeni venom exhibited anti staphylococcal activity with the lowest mean value of minimum inhibitory concentration (MIC). Moreover, reversal of antibiotic resistance was observed for combinations of B. moojeni venom (½ x MIC) and norfloxacin or ampicillin (both ½ x MIC) for 86.4% and 50% of the isolates, respectively. B. moojeni venom alone at ½ MIC inhibited 90% of biofilm formation,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bothrops moojeni; Bacteria; Antibiotic-resistance; NorA efflux pump; Biofilm.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33826

The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil
Provedor de dados: 3
Autores: Morado, Claudio Nona; Araújo, Francisco Gerson; Gomes, Iracema David.
Biomarkers are measurements within an organism that respond to environmental effects and are used as tools in bioassessment programs since they reflect physiological changes induced by exposure to pollutants. The hepatosomatic index (HSI) and the condition factor (CF) in three fish species Geophagus brasiliensis, Hypostomus affinis and Hypostomus auroguttatus were used to assess effects of pollutant stress in a tropical river during two seasons (dry and wet). Fish from the least disturbed sites had the lowest condition factor (CF) and the lowest HSI, whereas those from sites near pollutant discharges had the highest CF and HSI. Higher HSI and lower CF occurred during the dry season. It is suggested that species adapted to stressful conditions take...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.00.00-0 Ecologia condition factor; Hepatosomatic index; Fishes; Monitoring; Rivers. Ecologia de peixes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34293

Aerobic bacteria in oral cavity of Lancehead snakes (Bothrops atrox) with stomatitis
Provedor de dados: 3
Autores: Pereira, Heloisa Castro; Gomes, Dayane Olímpia; Hirano, Líria Queiroz Luz; Santos, André Luiz Quagliatto; Lima, Anna Monteiro Correia.
 Stomatitis is a common disease found on snake farms, and Gram-negative bacilli are the main etiological agents that play an important role as secondary sources of viral or parasitic infections. The purpose of this work was to identify the aerobic bacteria in the oral cavity of Bothrops atrox with stomatitis. Samples for microbiological examination were collected from 12 snakes bred on a commercial snake farm for venom extraction. Samples of the secretion in the oral cavity of each serpent presenting stomatitis were collected from fang sheath, using a cotton swab with sterile alginate. The samples were incubated and cultured on Petri dishes containing blood agar and XLD agar using the agar depletion technique. Bacterial growth occurred in all analyzed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.05.02.03-4 bacteriology; Infectious diseases; Reptilia; Squamata; Ophidia. Doenças Infecciosas de Animais.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34625

Optimized acid hydrolysis of the polysaccharides from the seaweed Solieria filiformis (Kützing) P.W. Gabrielson for bioethanol production
Provedor de dados: 3
Autores: Castro, George Meredite Cunha de; Benevides, Norma Maria Barros; Cabral, Maulori Curié; Miranda, Rafael de Souza; Gomes Filho, Enéas; Rocha, Maria Valderez Ponte; Araújo, Marjory Lima Holanda.
 The seaweeds are bio-resource rich in sulfated and neutral polysaccharides. The tropical seaweed species used in this study (Solieria filiformis), after dried, shows 65.8% (w/w) carbohydrate, 9.6% (w/w) protein, 1.7% (w/w) lipid, 7.0% (w/w) moisture and 15.9% (w/w) ash. The dried seaweed was easily hydrolyzed under mild conditions (0.5 M sulfuric acid, 20 min.), generating fermentable monosaccharides with a maximum hydrolysis efficiency of 63.21%. Galactose and glucose present in the hydrolyzed were simultaneously fermented by Saccharomyces cerevisiae when the yeast was acclimated to galactose and cultivated in broth containing only galactose. The kinetic parameters of the fermentation of the seaweed hydrolyzed were Y(P⁄S) = 0.48 ± 0.02 g.g−1, PP = 0.27 ±...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências da Vida  Bioquímica iota-carrageenan; Cellulose; Galactose; Kinetic parameters; Fermentation; Acclimation; Sulfuric acid. Biotecnologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/37227

Screening of whole yeast free-cells and optimization of pH and temperature for fructooligosaccharides production
Provedor de dados: 3
Autores: Deffert, Flávia; Agustini, Bruna Carla; Picheth, Geraldo; Bonfim, Tania Maria Bordin.
Fructooligosaccharides are catalyzed by β–fructofuranosidase enzyme, produced by many microorganisms. However, in order to achieve a more profitable, low time-consuming process with lower cost, researchers have sought alternatives. This study aimed to select and identify yeasts able to produce fructooligosaccharides and evaluate the influence of pH and temperature on their synthesis. Yeast suspensions, solutions of 500 g L-1 sucrose and three values of pH (4.5, 5.5, and 6.5) and temperature (40, 50, and 60ºC) were tested. Yeast species were identified by molecular techniques. Among 141 yeast isolates from grapes, 65 were able to synthesize fructooligosaccharides. The maximum concentration of fructooligosaccharides was 4.8% (w v-1), and Saccharomyces...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.12.00.00-9 prebiotics; Biotransformation; Identification; PCR. Microbiologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34140

The first finding of Ostrea cf. puelchana (Bivalvia) living as epibiont on Callinectes exasperates (Decapoda)
Provedor de dados: 3
Autores: Lima, Silvio Felipe Barbosa; Lucena, Rudá Amorim; Queiroz, Vinicius; Guimarães, Carmen Regina Parisotto; Breves, André.
 This paper describes the epibiosis of Ostrea cf. puelchana on Callinectes exasperatus (Gerstaecker, 1856), both collected from the estuary of the Paraíba River, in the state of Paraíba, northeastern Brazil. The basibiont crab was captured using a trap installed in mangrove area at a depth of about 2 meters. The oyster was closely attached to the left side of dorsal carapace covering most of the epibranchial, mesobranchial and metabranchial regions. Possible advantages and disadvantages for both the epibiont and the basibiont are discussed. We believe that young O. cf. puelchana may avoid a variety of potential predators due to the considerable movement capacity of C. exasperatus and may also serve as a small protective shield for the basibiont. However,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxonomia dos grupos recentes; Associação entre invertebrados marinhos Brachyura; Mangrove; Marine invertebrates; Mollusca; Pteriomorphia; South America. Epibiose (Relação não simbiótica entre dois organismos).
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33629

Effect of dietary supplement (cevas) on the chemical composition of wild fish Brycon falcatus Müller &amp; Troschel, 1844 in the Teles Pires river basin
Provedor de dados: 3
Autores: Matos, Liliane Stedile; Silva, João Otávio dos Santos; Beckmann, Marcos Alencar; Moreira, Paula Sueli Andrade; Oliveira, André Soares de; Carvalho, Lucélia Nobre.
 In the Teles Pires River watershed, one of the most common techniques currently used by fishermen to catch fish is to provide a food supplement commonly known as “cevas”. The purpose of this study was to compare the chemical composition of fillets from Brycon falcatus that were caught in both the presence and absence of cevas. The fish were sampled monthly and captured in the following conditions: the Tapaiúna River without cevas, the Teles Pires River with one ceva/100 m, the Celeste River with one ceva/500 m, the Verde River with one ceva/1000 m and the Cristalino River (control area). Subsequent to capture, the fish were euthanized and preserved on ice to determine their water, ash, crude protein and fat contents. Fillets of fish from the control area...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon basin; Fresh soybean; Feeding; Lipids; Matrinxã; Protein. Recursos Pesqueiros.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/30470

Germination and seedling structure of Ruprechtia laxiflora Meissn. (Polygonaceae)
Provedor de dados: 3
Autores: Müller, Rafael Espanhol; Souza, Luiz Antonio de; Pastorini, Lindamir Hernandez; Romagnolo, Mariza Barion.
Germination of diaspores and the seedling structure of Ruprechtia laxiflora Meissn. (Polygonaceae) which is a secondary species frequent in forest remnants are described. Seedlings were embedded in hydroxymethacrylate and sectioned in a rotary microtome according to usual techniques in plant anatomy. For bioassays of germination, the experimental design was completely randomized in a 3x2 bifactorial arrangement, corresponding to three temperatures (20, 25 and 30°C) and two light conditions (photoperiod and continuous darkness) for the diaspores newly harvested and in a 4x2 bifactorial arrangement, corresponding to four temperatures (15, 20, 25 and 30°C) and two light conditions (photoperiod and continuous darkness) for diaspores analyzed after storage....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Botânica germination percentage; Mean germination time; Germination speed index; Root-stem transition. Fisiologia  Morfologia e Anatomia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32617

In vitro inactivation of thrombin generation by polysulfated fractions isolated from the tropical coenocytic green seaweed Caulerpa racemosa (Caulerpaceae, Bryopsidales)
Provedor de dados: 3
Autores: Rodrigues, José Ariévilo Gurgel; Benevides, Norma Maria Barros; Tovar, Ana Maria Freire; Mourão, Paulo Antônio de Souza.
 Pharmacological efficacy of Caulerpa racemosa (Chlorophyta) sulfated polysaccharidic (SPs) fractions (F I→III) on models of coagulation and inflammation has been demonstrated, but not their effects on thrombin generation (TG). This study examined fractions for composition and physical-chemical characteristics and in vitro inactivation of TG by F I and F II in 60-fold diluted human plasma using continuous method. Papain-extraction yield of 0.7% revealed F I→III by DEAE-cellulose chromatography, with differences among the relative proportions of sulfate (17.37-24.00%), total sugars (30.03-48.34%) and absence of proteins. Charge density patterns and molecular sizes &gt; 100 kDa of the fractions were verified by both agarose/polyacrylamide analyses,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyta; Complex glycans; Sulfation pattern; Clot.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32095

Report of Sphenochernes camponoti (Beier, 1970) (Pseudoscorpiones, Chernetidae) in phoresy on Fanniidae (Diptera)
Provedor de dados: 3
Autores: Lira, André Felipe de Araujo; Tizo-Pedroso, Everton.
Phoresy is a common dispersal behavior among pseudoscorpions. Neotropical pseudoscorpions, mainly from the North and Northeast regions of Brazil, are known for their dispersal relationships with beetles and flies. Here, we report phoretic association among nymphs of Sphenochernes camponoti (Chernetidae) and Fannia flies (F. pusio, F. yenhedi, and F. canicularis) (Diptera, Fanniidae). Twelve flies, each carrying a young pseudoscorpion, were collected in Caatinga vegetation in Pernambuco State, Brazil. Sphenochernes camponoti is a myrmecophilous pseudoscorpion that lives in Camponotus and Acromyrmex colonies. Despite its association with ants, this pseudoscorpion uses other winged arthropods to disperse. This is the first report of phoresy by Sphenochernes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Comportamento Animal pseudoscorpion; Dispersal strategies; Species interactions; Caatinga. Ecologia; Zoologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36373

Useful woody species and its environmental availability: the case of artisanal fishermen in Itaúnas, Brazil
Provedor de dados: 3
Autores: Lopes, Lucas Costa Monteiro; Crepaldi, Maria Otávia Silva; Lobão, Adriana Quintella.
Ethnobotanical studies involve research with human societies and their different interaction with plants, and the quantitative approaches from thes estudies are important to select conservation priority of species in natural environment. This research aims to quantify use-values for woody plants mentioned by fishers in Itaúnas, state of Espírito Santo, and evaluate the relationship between use-values and species availability (absolute density and frequency, and importance value) in two distinct resting vegetation formations. It also proposes to identify priority species for conservation. It was selected 30 species cited in individual semi-structured interviews with key-informant in fishers’ community and who were also on list of structural survey of two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Botânica e Etnobiologia structural characteristics; Ethnobotany; Itaúnas State Park; Restinga; Use-value (UV). Etnobotânica.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33187

Giant african snail, Achatina fulica (Férussac, 1821): an environmental and public health problem in the northwestern of Paraná State, Brazil
Provedor de dados: 3
Autores: Andreazzi, Márcia Aparecida; Gasparotto, Francielli; Paccola, Edneia Aparecida de Souza; Silva, Cleiltan Novais da; Rodrigues, Aparecida de Fatima Cracco; Lizama, Maria de los Angeles Perez.
 Achatina fulica, known as Giant African Snail (GAS), was introduced in Brazil as a substitute for the European escargot, Helix aspersa maxima. However, its cultivation was abandoned and the mollusk became an invasive species, found throughout Brazil and causing damage to health and the environment. In this context, this study analyzed the knowledge of the population about the damage caused by GAS, seeking to reveal a regional scenario on this issue. This exploratory and cross-sectional study was conducted by means of a questionnaire applied to 150 people, which obtained sociodemographic characteristics of respondents and specific responses about the knowledge and handling of GAS. The results showed that most of the respondents know the snail and are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mollusk; Introduced species; Environment; Social study.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35569

Shading effects on leaf life span and functional traits in the widespread species Enterolobium contortisiliquum (Vell.) Morong
Provedor de dados: 3
Autores: Souza, João Paulo; Melo, Nayara Magry Jesus; Halfeld, Alessandro Dias; Reis, Jéssica Naiara.
 Enterolobium contortisiliquum occurs in native forests formations from southeast to northeast Brazil, and too in Argentina, Bolivia and Paraguay. The objective of this study was to evaluate shading effects in the early growth of E. contortisiliquum plants. We measured leaf gas exchange, chlorophyll content index, biomass allocation and leaf development in plants in sunny and shaded areas. The experiment was performed in Universidade Federal de Viçosa, campus Florestal, Minas Gerais, Brazil. To determine the effects of different light regimes (full sunlight and shade) on the growth of E. contortisiliquum plants, we divided plants into two groups: plants grown in a greenhouse under full sunlight, and plants grown under 70% shade tissue. E. contortisiliquum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.05.00.00-9 leaf area; Leaf development; Maximum net photosynthesis. Ecologia Vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33400

Production of pigments in Alternanthera sessilis calli mediated by plant growth regulators and light
Provedor de dados: 3
Autores: Milech, Cristini; Lucho, Simone Ribeiro; Kleinowski, Alítcia Moraes; Dutra, Débora Barwaldt; Soares, Mariana Mühlenberg; Braga, Eugenia Jacira Bolacel.
Among the compounds produced by plants, pigments such as betalains have received attention from both food and pharmaceuticals industries. The Alternanthera sessilis species produces these pigments, though in small quantities, and so it is necessary to increase production. Thus, many studies use elicitors that are capable of triggering physiological or morphological responses in plants. The objective was to establish callus production in A. sessilis grown under different combinations of growth regulators and light qualities and to assess whether these factors can increase betalain and flavonoid production. Leaf and internodal explants in MS medium with different growth regulators were used to obtain calli, which were subsequently transferred to a betacyanin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Betalain; Flavonoids; Secondary metabolites; Medicinal plants.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36312

Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
Provedor de dados: 3
Autores: Soares, Claudemir Martins; Hayashi, Carmino; Faria-Soares, Anna Christina Esper; Galdioli, Eliana Maria; Soares, Telma.
This study analyzed the diet during early developmental stages of Astyanax lacustris (AA), Piaractus mesopotamicus (PM), Megaleporinus obtusidens (MO) and Prochilodus lineatus (PL), under experimental conditions. Fish larvae, 350 of each species, were stocked separately in 16 fiber-cement tanks (500 L), from which, three larvae of each species were collected every three days, for 36 days. Tanks were fertilized (1.5 g NPK-7: 14: 8) and had 50% of the surface with macrophytes. Larvae were grouped in age classes = I: 5 to 11, II: 14 to 20, III: 23 to 29 and IV: 32 to 38 days and, dissected for analysis of the digestive tract. Methodologies of dominance, frequency of occurrence and points of food items were used. For AA and PM larvae, measurements were taken...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish larval; Stomach content; Astyanax lacustris; Megaleporinus obtusidens; Piaractus mesopotamicus; Prochilodus lineatus.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36846

Gomphonema Ehrenberg (Bacillariophyceae) in a lotic environment of the Upper Paraná River floodplain, Brazil
Provedor de dados: 3
Autores: Osório, Nicolli Cristina; Tremarin, Priscila Izabel; Ludwig, Thelma Veiga; Rodrigues, Liliana.
A taxonomic study of species of the genus Gomphonema Ehrenberg (Bacillariophyceae) was performed in alotic environment (Ipoitã Channel) of the Upper Paraná River Floodplain. Samplings were performed in June, September and December 2013 and February 2014. Two petioles of Eichhornia azurea (Sw) Kunth were sampled at three different sites in the channel. Twelve species and two taxonomic varieties were identified. All species identified were recorded at the sampling site 3, loca ated close to the Ivinhema River. The lowest number of taxa occurred at the sampling site 1 (9 specific and infra specific taxa), in the confluence with the Paraná River. All taxa of Gomphonema were the first record for the Upper Paraná River Floodplain. Our results emphasize the lack...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diatom; Distribution area; Periphyton; Taxonomy.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32134

Antioxidative enzymes of Cucumis sativus seeds are modulated by Leucaena leucocephala extracts
Provedor de dados: 3
Autores: Ribeiro, Vandjore de Mattos; Spiassi, Ariane; Marcon, Thaís Regina; Lima, Gislaine Piccolo de; Corsato, Jaqueline Malagutti; Fortes, Andréa Maria Teixeira.
 This study aimed to analyze oxidative stress produced in cucumber seeds and seedlings when exposed to aqueous extract from dried leaves of leucaena, as well as its effect on the germination behavior, early growth and the antioxidant enzymes activity. It was evaluated the percentage, the speed index, the average time, the frequency and germination synchronization, the root length and shoot, as well as the catalase and peroxidase enzymes activity. There was no significant inhibitory effect of the leaf extracts on the germination percentage. However, there was delay in the seeds germination, as the extract proportion increased. A stimulatory effect of the extract compared to the shoot length was observed, however the root growth was significantly reduced....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Botânica allelopathy; Reactive oxygen species; Antioxidant enzymes. Fisiologia Vegetal.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34801

Influence of manure concentration as inoculum in anaerobic digestion of vinasse
Provedor de dados: 3
Autores: Silva, Carlos Eduardo de Farias; Abud, Ana Karla de Souza.
Vinasse, main residue of the sugarcane industry, has high pollutant content, being subjected to the use in biogas production due to the high content of organic matter non-toxic to microbial action. For a consolidated process, it is necessary to study parameters that influence the process, in which the amount of inoculum is one of the major factors in the biological process of biogas production. This study investigated the influence of the amount of manure as inoculum (0.5 to 5.5%) during the biodigestion process, evaluating variables such as chemical oxygen demand (COD), pH, biogas production, methane concentration, total solids and total phosphorus and nitrogen contents, as well as microbiological analysis in the sludge remaining in the digester....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbiologia Aplicada - Microbiologia Industrial e de Fermentaçao biodigestion; Manure; Vinasse; Biomethane; Inoculum. Anaerobic digestion.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34007

Production of cellulases by Penicillium oxalicum through solid state fermentation using agroindustrial substrates
Provedor de dados: 3
Autores: Bomtempo, Fabrícia Vieira Silva; Santin, Franciane Maria Mantovani; Pimenta, Raphael Sanzio; Oliveira, Deyla Paula de; Guarda, Emerson Adriano.
 The purpose of this study was to define the factors that influence the production of cellulases by Penicillium oxalicum, a strain obtained from a leaf-cutting ant colony and identified based on the ITS gene. The experimental design included solid state fermentation using sugarcane bagasse and lignocellulosic sorghum as the lignocellulosic substrate. The variables were analyzed using a 25-1 fractional factorial design, with three replicates on the central point. All the variables analyzed influenced the production of at least one of the three cellulose types analyzed. The highest values observed were: FPase 4.2 U g-1, CMCase 9.2 U g-1 and Avicelase 8.4 U g-1 using lignocellulosic sorghum as the substrate. The best conditions for enzyme production were:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sugarcane bagasse; Lignocellulosic sorghum; Cellulolytic enzymes. Microbiologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32384

Age and density of eggs of Helicoverpa armigera influence on Trichogramma pretiosum parasitism
Provedor de dados: 3
Autores: Zuim, Vitor; Rodrigues, Hígor de Souza; Pratissoli, Dirceu; Torres, Jorge Braz; Fragoso, Débora Ferreira Melo; Bueno, Regiane Cristina Oliveira de Freitas.
This study evaluated the parasitism of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) on eggs of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) at different ages and densities. The rates of parasitism and emergence, the number of parasitoids emerged per egg and sex ratio of offspring were evaluated in both experiments. Eggs of H. armigera up to 36 hours provided greater parasitism and emergence of adults compared to eggs up to 60 hours old. The number of parasitoids, which emerged per host egg, was greater than one and the sex ratio remained around 80% of females, regardless of the egg development stage. Females of T. pretiosum responded with superior rates of parasitism, emergence and number of parasitoids per egg at the densities of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia; Fitossanidade; Parasitologia Agrícola Biological control; Exotic pest; Egg parasitoid; Host-parasitoid interaction; Noctuidae.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34943

Population structure of fishes from an urban stream
Provedor de dados: 3
Autores: Zanatta, Naiara; Pazianoto, Laryssa Helena Ribeiro; Cionek, Vivian de Mello; Sacramento, Patrícia Almeida; Benedito, Evanilde.
 The aim of this study was to identify the population structure of the ichthyofauna in an urban stream within an environmental protection area in southern Brazil. Quarterly samplings were conducted between October 2009 and August 2010. Poecilia reticulata was the most abundant species, followed by Hypostomus ancistroides and Rhamdia quelen. It was found a higher proportion of adults instead of juveniles from P. reticulata and R. quelen populations, while the opposite was recorded for H. ancistroides. Sex ratio of 1:1 was found for H. ancistroides, but differed significantly for P. reticulata and R. quelen. Females of P. reticulata and R. quelen reached higher length than males in the smaller and higher length-classes, while H. ancistroides females were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sex ratio; Reproduction; Population attributes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31899

Use of human cadavers in teaching of human anatomy in brazilian medical faculties
Provedor de dados: 3
Autores: Lopes, Isabela de Sousa Leal; Teixeira, Bruna de Alcobaça Castelo Branco; Cortez, Pedro Olímpio Barros Cavalcante; Silva, Guilherme Rodrigues da; Sousa Neto, Antônio Isidora de; Leal, Noelia Maria de Sousa.
The Human Anatomy is the study of human body structure and it has been related to the use of cadavers through the history. The aim of this research was to investigate the use of human cadavers in practical classes of human anatomy in Brazilian medical schools, and it was also made the identification of alternative methodologies and new technologies applied to the teaching of Anatomy. The research was conducted at the Faculdade Integral Diferencial from January to December of 2015. The population studied was composed by professors responsible for the Human Anatomy sector of the Brazilian medical faculties. It was addressed all the 242 medical colleges of the Brazil. It was obtained 81 answers. 96% of respondents reported make use of human corpses in its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ANATOMY formaldehyde; Glycerin; Dissection.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33860

Immature Odonata-Anisoptera in the Iguatemi river basin, upper Paraná River, Mato Grosso do Sul State, Brazil
Provedor de dados: 3
Autores: Boneto, Daiane Dias; Batista-Silva, Valéria Flávia; Soares, Juliane Alessandra Cavalieri; Kashiwaqui, Elaine Antoniassi Luiz; Oliveira, Iana Aparecida Dalla Valle de.
This study present an inventory of the genera of Odonata-Anisoptera in lotic environments of the Iguatemi River basin, upper Paraná River, Mato Grosso do Sul State, Brazil. Samplings were performed from December 2006 to February 2009 in the Iguatemi River and eight streams of the basin. We collected 739 immature Odonata, distributed in 25 genera and three families; of which one genus represent a new record for the Mato Grosso do Sul State. Progomphus, Tramea, Elasmotemis, Macrothemis, Aphyla and Phylocycla were the most representative genera in the Iguatemi River basin. The genus accumulation curve predicts an increase of new genera for the Iguatemi River basin.  
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.05.00.00-9 lotic environment; Aquatic macroinvertebrate; Odonatofauna; Richness; Composition. Ecologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/30769

The genus Senna Mill. (Leguminosae: Caesalpinioideae) in the Serra Geral of Licínio de Almeida, Bahia, Brazil
Provedor de dados: 3
Autores: Azevedo, Francislainy Pereira de; Conceição, Adilva de Souza.
 Senna includes about 300 species with circumtropical distribution, widely represented in the Americas, also occurring in Africa, Australia, Asia and Oceania. The genus is represented in Brazil by 80 species, of which 26 are endemic. The Serra Geral de Licínio de Almeida (SGLA), situated in the central portion of the Cadeia do Espinhaço, state of Bahia, Brazil, presents areas relatively little studied, with great potential for the registration of new information about Brazilian biodiversity. The floristic survey of Senna in the SGLA included analysis of specimens collected from February 2012 to October 2013. The analyses were supplemented with dried collections from the following herbaria: ALCB, BHCB, HUEFS, HUNEB, HRB, MBM and SPF.The genus is represented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biológicas; Botânica; Florística floristics; Taxonomy; Cerrado; Espinhaço Range. Botânica.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32030

Mammary gland morphology in the northern Amazon red squirrel (Sciurus igniventris)
Provedor de dados: 3
Autores: Gonçalves, Thamara Cozzi; Branco, Érika; Rodrigues, Rogério Antônio Ribeiro; Giese, Elane Guerreiro; Santos, Juliana Teixeira; Lima, Ana Rita de.
 Sciurus igniventris is a squirrel with broad distribution in South America. We examined one female adult specimen which was donated after death by trampling. The aim of this work was describe the morphological characteristics of mammary gland of one specimen. The body was fixed using 10% aqueous formaldehyde. Tissues were processed and slides prepared following standard histological protocols. Morphological analysis of the mammary glands revealed similarities to those described in the literature for domestic and wild mammals. As special features in kind, macroscopically identified a pair of thoracic glands, followed by three pairs of abdominal glands. Microscopically the abundant presence of connective tissue dividing the alveolar-tubular glands. Similar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias I Microscopy; Breasts; Rodent. Anatomia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36463

Molecular markers associated with the agronomic traits in the medicinal plant lemon balm
Provedor de dados: 3
Autores: Safaei-Chaeikar, Sanam; Rahimi, Mehdi.
Finding association between molecular markers and agronomic traits provide an excellent tool for indirect selection of a trait of interest in the population. In this study, stepwise regression analysis was used to estimate associations between ISSR and RAPD markers with some agronomic traits in lemon balm ecotypes. The analysis of results revealed significant associations between the traits and some of the studied loci. For all the traits, more than one informative marker was detected. Totally,90informative markers, including 48 ISSR loci and 42 RAPD loci, were identified. The SA-R-10, UBC826-1, UBC812-9, UBC813-10, UBC825-4, OPA-01-15, OPC-04-7 and CS-56-8 markers or fragment showed a significant correlation with Essential oil percentage and controlled...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Association analyses; Informative markers; Multiple regression; R square.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34309

Influence of Eichhornia crassipes and Lemna sp. on the natural diet of Astyanax altiparanae Garutti &amp; Britski, 2000 in the initial stages
Provedor de dados: 3
Autores: Galdioli, Eliana Maria; Hayashi, Carmino; Soares, Claudemir Martins; Soares, Telma; Wolff, Liu.
 Aiming to study the changes in the diet of Astyanax altiparanae in the early developmental stages, in the presence of Eichhornia crassipes (EC) and Lemna sp. (LM), larvae of Astyanax altiparanae were stocked in eight tanks of 900 L (500 ind. tank-1), four with EC and four with LM covering 50% surface. Tanks were inoculated with plankton and received 3.0 g inorganic fertilizer (NPK-7:14:8) and 1.5 g every week. At every three days, three larvae were taken from each tank, fixed in 4% formaldehyde and grouped into four age classes (I: 6 to 12 days, II:15 to 21 days, III:24 to 30 days; IV:33 to 39 days). The analysis of dominance and frequency of occurrence (FO) of food items indicated that, at this stage, A. altiparanae is generalist. In class I, there was a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.00.00.00-6 fish larvae; Floating macrophyte; Plankton; Larval development; Diet. 2.05.03.00-8.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32102

Symbiotic compatibility between arbuscular mycorrhizal fungi (autoctone or exotic) and three native species of the Caatinga in different phosphorus levels
Provedor de dados: 3
Autores: Oliveira, João Ricardo Gonçalves de; Resende, Geraldo Milanez de; Melo, Natoniel Franklin de; Yano-Melo, Adriana Mayumi.
The aim of this study was to evaluate three plant species native to Caatinga (Aspidosperma pyrifolium, Ziziphus joazeiro and Pseudobombax simplicifolium) in response to inoculation with two arbuscular mycorrhizal fungi (autoctone: Claroideoglomus etunicatum or exotic: Acaulospora longula) and phosphate fertilization. The experiment was conducted in a greenhouse with a completely randomized design involving a factorial arrangement of three inoculation treatments (control, C. etunicatum or A. longula) and 4 levels of single superphosphate (0 - no added P2O5, 12, 24 and 48 mg dm-3) in 10 repetitions. Under the conditions of this study, the inoculum of C. etunicatum, autoctone to the semi-arid region, showed great compatibility and efficiency in promoting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.12.02.00-1 Semi-arid; Mycorrhiza; Endemic species. Microbiologia aplicada.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33486

Prediction of mutations on structure primase of the archaeon Sulfolobus solfataricus
Provedor de dados: 3
Autores: Souza, Eden Silva e; Diniz, Michely Correia.
 All living organisms need a DNA replication mechanism and it has been conserved in the three domains of life throughout evolutionary process. Primase is the enzyme responsible for synthesizing de novo RNA primers in DNA replication. Archaeo-Eukaryotic Primase (AEP) is the superfamily that typically forms a heterodimeric complex containing both a small catalytic subunit (PriS) and a large accessory noncatalytic subunit (PriL). Sulfolobus solfataricus is a model organism for research on the Genetics field. The aim of this work was to evaluate, via Bioinformatics tools, three mutations in the large subunit (PriL) of the archaeon Sulfolobus solfataricus. The aspartic acid residue in the positions (Asp) 62, (Asp) 235, (Asp) 241 have been substituted by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.00.00.00-6; 2.02.02.00-8 in silico; PriL; 3D structure; DNA replication; Primer; Mutations. Genética Molecular e de Microorganismos.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34600

Behavior of lateral buds of Hancornia speciosa after cryopreservation by encapsulation-vitrification
Provedor de dados: 3
Autores: Prudente, Débora de Oliveira; Paiva, Renato; Nery, Fernanda Carlota; Máximo, Wesley Pires Flausino; Silva, Luciano Coutinho.
 Hancornia speciosa is a fruitful species from Cerrado biome with high economic potential. However, the intense and disordered extractivism have caused a reduction of its population in its endemic area. In addition, seed recalcitrance negatively affects the conventional conservation of the species. Aiming to find alternatives that enable the long-term conservation of this species, the study’s objective was to assess the behavior of lateral bud’s regrowth after cryopreservation procedures by encapsulation-vitrification technique. Sodium alginate capsules containing lateral buds were pre-cultured in liquid WPM supplemented with 1.0 M glycerol, and subsequently exposed to different concentrations of sucrose (0.3; 0.75 and 1.0 M) for 24 or 48 hours. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Botânica  criopreservação de recursos genéticos vegetais Mangabeira; Recalcitrant species; Long-term conservation; Dehydration. Botânica.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31620

Profile of publications about functional foods in Brazilian journals: a scientometric analysis from 2000 to 2015 and an overview of Brazilian legislation
Provedor de dados: 3
Autores: Silva, Carlos Eduardo De Farias; Andrade, Nayana Pereira; Cerqueira, Raphaella Barbosa de Oliveira; Silva, Izabelle Caroline Caetano da; Cavalcante, Paula Acioly Wanderley; Abud, Ana Karla de Souza; Souza, José Edmundo Accioly de.
 Functional foods have been highlighted by having, in addition to nutritional characteristics, the possibility of preventing risk and/or delaying the development of several non-communicable diseases (NCDs). In the last decade, many articles related to functional food have been published worldwide, and there is a need to understand how the theme is reflected in national journals. The present research aimed to collect information about publications covering the topic of functional foods in journals, synthesizing these data and interpreting them, evaluating the profile of the authors and a frequency of the articles involved with the subject by scientific journal and by State/region. Subsequently, they were evaluated as the most studied foods and as more used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioquimica - Metabolismo e Bioenergetica information gathering; Functional property request; Brazilian publications; Anvisa. Functional Food.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34672

Braga nasuta (Cymothoidae): an ectoparasite of the Giant Amazonian fish Arapaima gigas (Osteoglossidae) fingerlings cultured in the Amazon region in Northern Brazil
Provedor de dados: 3
Autores: Jesus, Elson Cardoso de; Cardoso, Lucas; Ferreira, Tamiris Henrique; Martins, Mauricio Laterça; Rodrigues, Marília Danyelle Nunes.
 Isopods Cymothoidae are organisms that parasitize several fish species, both marine and freshwater, provoking important physiological alterations and secondary infections. The genus Braga was proposed to harbor three species of parasitic isopods in freshwater fish from South America: B. brasiliensis, B. cichlae and B. nasuta. Posteriorly, other four species were included: B. patagonica, B. amapaensis, B. fluviatilis and B. bachmanni. Regarding the geographical distribution of the genus, there are registers in Brazil, Argentina, Suriname and Paraguay. In this study, 3,625 fingerlings of pirarucu Arapaima gigas were examined from a commercial fish farm in the Amazon region, Pará State, to observe and identify possible parasites. A total of eleven...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.13.00.00-3 Amazon; Pirarucu; Farming; Parasite; Isopoda. Parasita em peixes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35080

Genetic variability and evidence of founder effect in Hemiodus orthonops (Characiformes: Hemiodontidae) from the upper Paraná River basin, Brazil
Provedor de dados: 3
Autores: Marques, Liégie Alher; Renesto, Erasmo.
 Hemiodus orthonops is a small fish of the Hemiodontidae family, order Characiformes, with a maximum of 25 cm standard length. Until recently, H. orthonops was an endemic species from the Paraná-Paraguay basin and it was absent from the upper Paraná River basin. Since 2008, it has started to be collected in the upper Paraná River, representing up to 10% of catches. Two population samples of H. orthonops from two localities of the upper Parana River basin (Porto Camargo and Porto Figueira) were analyzed using the allozymes electrophoresis technique. Twenty-one enzymatic loci were detected. The population sample from Porto Camargo displayed a genetic variability (He = 0.1061) higher than that from Porto Figueira (He = 0.0580) and homozygote excess in both of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allozymes; Fish; Genetic distance; Heterozygosity; Protein polymorphism. genética de populações.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31793

Biosurfactants produced by Microbacterium sp., isolated from aquatic macrophytes in hydrocarbon-contaminated area in the Rio Negro, Manaus, Amazonas
Provedor de dados: 3
Autores: Lima, João Marcelo Silva; Pereira, Jose Odair; Batista, Ieda Hortêncio; Junior, Raimundo Carlos Pereira; Barroso, Hileia dos Santos; Costa Neto, Pedro de Queiroz; Jackisch Matsuura, Ani Beatriz; França, Suzelei de Castro; Azevedo, João Lúcio.
 Endophytic bacteria isolated from Eichhornia crassipes (Mart) Solms., collected in oil contaminated wastewater of effluent generated by Petrobras refinery in Manaus were investigated to determine their potential for producing biosurfactants. Assay with 2.6-dichlorophenol indophenol (DCPIP) indicator to verify hydrocarbon biodegradation activity; oil emulsification test; drop-collapse method; surface tension and growth curve of biosurfactant production. The M87 Microbacterium sp. strain chosen for this work was identified by the sequencing of the rDNA region and the chemical characterization was performed by FTIR, UFLC/MS and 1H RMN techniques. The selected bacterial isolate provided 3g L-1 of biosurfactant, using diesel oil as sole carbon source, being...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multidisciplinar Biotecnologia Ambiental bioremediation; Eichhornia; Diesel oil. Biotecnologia ambiental.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33842

DNA barcode regions for differentiating Cattleya walkeriana and C. loddigesii
Provedor de dados: 3
Autores: Rivera-Jiménez, Hernando; Rossini, Bruno César; Tambarussi, Evandro Vagner; Ann Veasey, Elizabeth; Ibanes, Bruna; Marino, Celso Luis.
 Growers appreciate Cattleya walkeriana and C. loddigesii due to striking shape and rarity. Thus, this study aimed to evaluate the feasibility of DNA barcode regions, namely ITS1, ITS2 and rpoC1, to discriminate between C. walkeriana and C. loddigesii species. DNA barcode regions were successfully amplified using primers designed to amplify plants. We also included sequences from public databases in order to test if these regions were able to discriminate C. walkeriana and C. loddigesii from other Cattleya species. These regions, and their combinations, demonstrated that the ITS1+ITS2 had the highest average interspecific distance (11.1%), followed by rpoC1 (1.06%). For species discrimination, ITS1+ITS2 provided the best results. The combined data set of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.00.00.00-6 orchid improvement; Genetic variation; Species separation. 2.02.03.00-4.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33024

Influence of natural radon and metal contamination on surface water quality from a Brazilian Semiarid Region
Provedor de dados: 3
Autores: Dantas, Richelly da Costa; Navoni, Julio Alejandro; Ferreira, Douglisnilson de Morais; Costa, Thomas Ferreira da; Medeiros, Silvia Regina Batistuzzo de; Amaral, Viviane Souza do.
The Brazilian semiarid region presents some adverse environmental conditions for the settled population such as a restricted water availability and the presence of radon and metal natural sources that can contaminate the water reservoirs and consequently become a concern for human health. The present study evaluated the water quality of the Riacho das Cachoeiras Dam located in the urban area of Lajes Pintadas (state of Rio Grande do Norte, Brazil) as source for human consumption. An analysis of Physicochemical parameters, heavy metal content and Radon in water samples was performed along with the assessment of the water mutagenic potential through Micronucleus Test (MN) on Tradescantia pallida and Oreochromis niloticus. The content of metals in water for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Area: Genetica. Sub-area: Mutagenese radiation; Lead; Mutagenicity; Micronucleus; Geogenic contamination. Genetica.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27787

Detection of microorganisms, endotoxins and aluminum in mobile dialysis services
Provedor de dados: 3
Autores: Jesus, Priscila Rodrigues de; Ferreira, Joana Angélica Barbosa; Freitas, Hércules Rezende; Abrantes, Shirley de Mello Pereira; Marin, Victor Augustus.
 Hemodialysis water and dialysates are fundamental in the treatment of kidney disease. During just one hemodialysis session, 120 liters of dialysate are consumed. Thus, it is essential that the parameters of chemical and microbiological quality of the fluids used in dialysis systems are carefully observed. In this study, water samples were collected at 12 hospitals in the state of Rio de Janeiro. The samples were obtained at three points of fluid reservoirs: pre-, post-osmosis and dialysis solution. After collection, colony forming units (CFU), total coliforms and Escherichia coli 100 mL-1 were quantified. Later, isolated colonies and endotoxin content were identified by biochemical assays. Data about total aluminum levels per sample (mg L-1) were also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dialysis; Hemodialysis units; Dialysis solutions.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31779

Ovarian histology and fecundity in the evaluation of the reproduction of the invasive species Serrasalmus marginatus (Characidae) on a neotropical floodplain
Provedor de dados: 3
Autores: Melo, Gabriele Sauthier Romano de; Santana, Herick Soares de; Tos, Claudenice Dei.
 The construction of the Itaipu Hydroelectric Power Plant in 1982 led to the formation of a reservoir, which, in turn, leveled the waters of the Paraná River by flooding the geographic barrier Salto de Sete Quedas. This allowed the piranha Serrasalmus marginatus to invade and colonize the upper Paraná River. This study aimed to: i) confirm, through light microscopy, the reproductive phases of S. marginatus females; ii) estimate fecundity and iii) evaluate the reproduction areas of the population. A total of 764 females were collected from nine sampling sites on the upper Paraná River floodplain. Microscopic analysis of the ovaries showed the following phases: early developing subphase, developing phase, spawning capable phase, actively spawning subphase,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.05.02.00-1 Indeterminate fecundity; Type of spawning; Oogenesis; Oocytes; Piranha. Ecologia de Ecossistemas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33021

Tolerance to Polycyclic Aromatic Hydrocarbons (PAHs) by filamentous fungi isolated from contaminated sediment in the Amazon region
Provedor de dados: 3
Autores: Souza, Hilton Marcelo de Lima; Barreto, Lindimar Rosas; Mota, Adolfo José da; Oliveira, Luiz Antônio de; Barroso, Hileia dos Santos; Zanotto, Sandra Patricia.
 Tolerance to Polycyclic Hydrocarbons Aromatic (PAHs) is considered an important characteristic when assessing the bioremediation potential of microorganisms. Given this, the objective of this research was to assay filamentous fungi from the Amazon region, isolated from sediments with differents levels of contamination by PAHs, for tolerance to phenanthrene and pyrene. To achieve this, fungal cultures plugs (5 mm), obtained after 7 days growth, were transferred to petri dishes containing 20% Sabouraud dextrose agar medium, after surface innoculation with phenanthrene and pyrene crystals, separately. Radial mycelial growth was evaluated after 10 days at five different concentration levels for each contaminant and control group, all in triplicate for each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.12.00.00-9 phenanthrene; Pyrene; Fungal growth inhibition; Amazon. Microbiologia ambiental.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34709

An anti-dengue and anti-herpetic polysulfated fraction isolated from the coenocytic green seaweed Caulerpa cupressoides inhibits thrombin generation in vitro
Provedor de dados: 3
Autores: Rodrigues, José Ariévilo Gurgel; Eloy, Ygor Raphael Gomes; Vanderlei, Edfranck de Souza Oliveira; Cavalcante, Jéssica Figueiredo; Romanos, Maria Tereza Villela; Benevides, Norma Maria Barros.
The antiviral potency of Caulerpa cupressoides (Chlorophyta) sulfated polysaccharidic fractions (Cc-SP1→3) associated with thrombin generation (TG) assay is unknown. This study analyzed the structure of Cc-SP1 and its effects against herpes viruses (HSV-1 and HSV-2), dengue-virus (DENV-1), human-metapneumovirus (HMPV) and adenovirus (AdV) in Vero and mosquito C6/36 cell-lines and as inhibitor of TG in 60-fold diluted human plasma using continuous system. Infrared analysis indicated ulvan containing 11% sulfate, 40.16% total sugars and 6% uronic acid. Procedures of agarose/polyacrylamide gels electrophoresis revealed two major components presenting sulfate and non SPs, with molecular dispersion ranging from 8 to &gt; 100 kDa, respectively, as confirmed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Química de macromoléculas Bryopsidales; Marine glycans; Cytotoxicity; Viral infection; Thrombin. Bioprospecção.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/28081

Experimental exposure to 3-monochloropropane-1,2-diol from the pre-puberty causes damage in sperm production and motility in adulthood
Provedor de dados: 3
Autores: Vieira, Kátia Cristina Melo Tavares; Favareto, Ana Paula Alves.
3-Monochloropropane-1,2-diol (3-MCPD) is a food contaminant that can be formed during the thermic processing of various foodstuffs. Studies of reproductive toxicology of 3-MCPD are mainly concentrated in the evaluation of possible insults caused by exposure of adult animals. However, the prepuberty might be a period of different susceptibility to chemicals. The aim of this study was to evaluate the effects on reproductive endpoints of the 3-MCPD-exposure prepubertal male rats. Wistar male rats were assigned to 4 groups: control and exposed to 2.5; 5 or 10 mg kg-1 day-1 of 3-MCPD for 30 days by gavage. Testis and epididymis were used for sperm counts and histology analysis. Sertoli cell number and dynamic of the spermatogenesis were evaluated. Sperm were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.06.00.00-3 monochloropropanol; Puberty; Rats; Spermatogenesis; Reproduction. Morfologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31323

Detection of Anisakidae larvae parasitizing Plagioscion squamosissimus and Pellona castelnaeana in the State of Pará, Brazil
Provedor de dados: 3
Autores: Rabelo, Núbia Lorena Farias; Silva, Thatyana Cristina Muniz e; Araujo, Laudemir Roberto Ferreira; Pinheiro, Raul Henrique da Silva; Rocha, Carlos Alberto Machado da.
 Five specimens of Plagioscion squamosissimus from Xingu River and ten specimens of Pellona castelnaeana from Mosqueiro Island, both in the State of Pará, Brazil, were examined to investigate the presence of anisakid nematodes, due to their zoonotic potential. Their parasitism indices and sites of infection were also determined. This is the first record of Anisakidae parasitizing Pellona castelnaeana. Four-hundred and eighty-four third-stage larvae (L3) of Anisakidae were found, of which 42 were found in P. squamosissimus and 442 in P. castelnaeana. The parasitism indices of the anisakid collected from the P. squamosissimus comprised prevalence (P) of 100%, mean infection intensity (MI) of 8.4, range of infection (RI) of 1-13, mean abundance (MA) of 8.4,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.13.00.00-3 freshwater fish; Zoonosis; Anisakidae; Amazon basin. Parasitologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35615

Biodegradation of the fungicide carbendazim by bacteria from Coriandrum sativum L. rhizosphere
Provedor de dados: 3
Autores: Santos, Jucileuza Conceição dos; Batista, Ieda Hortêncio; Barroso, Hiléia Santos; Lima, João Marcelo Silva; Costa Neto, Pedro de Queiroz; Ghelfi, Andrea; Pereira, José Odair.
 The biocidal agrochemicals commonly used in agriculture can remain in the soil, affecting the environmental conditions and causing serious risks to health. Knowing that soil microorganisms, especially those from the rhizosphere, can degrade environmental xenobiotics, it was evaluated the potential of bacteria isolated from Coriandrum sativum L. rhizosphere to biodegrade carbendazim (MBC), a fungicide extensively used by agriculturists from rural farming communities in Manaus, Amazonas. Cultures carried out in medium containing carbendazim as a sole carbon source enabled the isolation of 80 bacteria, in the established conditions. Assays to determine degradation potential allowed the selection of the two elite isolates identified as Stenotrophomonas sp....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.12.00.00-9 Amazon soil; Fungicide; Coriander; Carbendazim-degrading bacteria; Stenotrophomonas; Xenobiotics. Microbiologia Aplicada.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34067

Processed fruit juice ready to drink: screening acute toxicity at the cellular level
Provedor de dados: 3
Autores: Silva, Erick Leal da; Sales, Ila Monize Sousa; Santos, Fabelina Karollyne Silva dos; Peron, Ana Paula.
The present study evaluated the acute toxicity at the cellular level of processed juice ready for consumption Orange and Grape flavors, produced by five companies with significant influence on the food market of South American countries, especially in Brazil. This evaluation was performed in root meristem cells of Allium cepa L., at the exposure times of 24 and 48 hours, directly with marketed liquid preparations. Based on the results, it was found that fruit juices, of all companies considered, promoted significant antiproliferative effect to root meristems at the exposure time of 24 hours and resulted in at both exposure times, statistically significant number of mitotic spindle changes and chromosomal breaks. Therefore, under the study conditions, all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Industrialized juice; Cytotoxicity; Genotoxicity; Mutagenicity; Meristem tissue.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33699

Reuse of wastewater from pulp industry for the optimization of fungal xylanase production
Provedor de dados: 3
Autores: Queiroz-Fernandes, Geisiany Maria de; Martins, Bruna Letícia; Rustiguel, Cynthia Barbosa.
The production of enzymes using agro-industrial waste is a low cost alternative for the reuse of byproducts, with the subsequent impact decrease on the environment. Current analysis produced xylanase using fungus Aspergillus niger, with two types of wastewater generated during the pulp chemical bleaching phase as inducers. Xylanase was produced by submerged liquid fermentation and factorial design optimized parameters that influence production (concentration of wastewater and production period). Initial culture conditions (pH, temperature and agitation) were optimized independently. Alkaline wastewater was more effective than acidic wastewater for the induction of xylanase in optimized conditions: 50% of culture medium, 7-day production, 30°C, pH 6.0 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 90400003 enzyme; Aspergillus niger; Factorial design; Agro-industrial waste; Xylanase. Biotecnologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34459

Vertebrate road kill survey on a highway in southern Brazil
Provedor de dados: 3
Autores: Corrêa, Luiz Liberato Costa; Silva, Darliane Evangelho; Oliveira, Stefan Vilges de; Finger, Júlia Victória Grohmann; Santos, César Rodrigo dos; Petry, Maria Virginia.
 Highways are a major factor acting in the decline of several wildlife populations. Impact occurs due to the continuous flow of motor vehicles over tracks and collision with animals using the same area. This study aimed to list road killed wild vertebrates found in highways in the Pampa Biome, state of Rio Grande do Sul, over an entire year. The taxa found (amphibians, reptiles, birds and mammals) were identified to species level and their frequency of occurrence was seasonally registered. Along 2,160 km, we found 318 road killed individuals, totaling 65 species. This number represents an average of 0.147 road killed specimens by kilometer (that is, 1 individual each 7 km). Of these, seven species are under threat of extinction in the state of Rio Grande...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversidade  Ciências Biológicas  Ciências Ambientais mortality; Wildlife; Rio Grande do Sul.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33788

Zero-inflated beta regression model for leaf citrus canker incidence in orange genotypes grafted onto different rootstocks
Provedor de dados: 3
Autores: Gonzatto Junior, Oilson Alberto; Guedes, Terezinha Aparecida; Gonçalves-Zuliane, Aline Maria Orbolato; Nunes, William Mario de Carvalho.
Data with excess zeros are frequently found in practice, and the recommended analysis is to use models that adequately address the counting of zero observations. In this study, the Zero Inflated Beta Regression Model (BeZI) was used on experimental data to describe the mean incidence of leaf citrus canker in orange groves under the influence of genotype and rootstocks of origin. Based on the model, it was possible to quantify the odds that a null observation to mean incidence comes from a particular plant according to genotype and rootstock, and estimate its expected value according to this combination. Laranja Caipira rootstock proved to be the most resistant to leaf citrus canker as well as Limão Cravo proved to be the most fragile. The Ipiguá IAC,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 1.02.03.00-1 GAMLSS models; Inflated models; Odds ratio; Citrus sinensis; Xanthomonas citri subsp. citri. Probabilidade e Estatística Aplicadas.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33063

Cytotoxic and genotoxic effects of Solanum lycocarpum  St.-Hil (Solanaceae) on the cell cycle of Lactuca sativa and Allium cepa
Provedor de dados: 3
Autores: Chiavegatto, Raquel Bezerra; Chaves, Ana Luisa Arantes; Silva, Izabela Caputo Assis; Lima, Luciana Alves Rodrigues dos Santos; Techio, Vânia Helena.
 Solanum lycocarpum St.-Hil popularly known as ‘fruta-de-lobo’ or ‘lobeira’ is native to the Brazilian Cerrado, and used in folk medicine due to its phytotherapic properties. The action of S. lycocarpum on the cell cycle and chromosomes in order to demonstrate whether there are aneugenic and/or clastogenic effects is unknown. Thus, this study aimed at investigating the cytotoxic and genotoxic potential of methanol and hexane extracts of S. lycocarpum on growth and cell cycle of Lactuca sativa and Allium cepa. Roots from both species were exposed for 72 hours to methanol and hexane extracts with 50, 100, and 200 µg mL-1 of S. lycocarpum. Slides were prepared by the squash technique and then analyzed to determine the mitotic index and the total of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.02.02-9 aneugenic; Cerrado; Clastogenic; Lobeira; Medicinal plant. Citologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34082

Community of protozoans and metazoans parasitizing Auchenipterus nuchalis (Auchenipteridae), a catfish from the Brazilian Amazon
Provedor de dados: 3
Autores: Dias, Marcos Tavares.
 This paper describes the first study on parasite diversity in Auchenipterus nuchalis Spix &amp; Agassiz, 1829 (Auchenipteridae). In 31 fish caught in a tributary of the Amazon River, 10,708 parasites were collected, such as Ichthyophthirius multifiliis, Piscinoodinium pilullare, Cosmetocleithrum striatuli, metacercariae of Posthodiplostomum sp, and larvae and adults of Procamallanus (Spirocamallanus) inopinatus. These parasite species showed aggregated dispersion, except for C. striatuli, which had a uniform dispersion. The component community of parasites showed a low Brillouin diversity (0.67 ± 0.27), low species richness (3.5 ± 0.8) and low evenness (0.43 ± 0.17), and it was characterized by the presence of species with high prevalence and abundance....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parasitologia Brazil; Diversity; Freshwater fish; Parasites. Zoologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32836

Biological parameters of three Trichogramma pretiosum strains (Riley, 1879) (Hymenoptera: Trichogrammatidae) on eggs Helicoverpa armigera (Hübner, 1805) (Lepidoptera: Noctuidae)
Provedor de dados: 3
Autores: Carvalho, Gabriel dos Santos; Silva, Luciana Barbosa; Veras, Maisa Sousa; Santos, Eliane Carneiro Bueno dos; Almeida, Mayra Layra dos Santos; Reis, Soislan Sousa.
 This project has an objective to study the biological parameters of Trichogramma pretiosum on eggs of H. armigera. The three strains of T. pretiosum were evaluated: TM, TMC and TLEM, from different places. The experimental establishing was completely randomizing with twenty repeats per treatment, being used by a female parasitoid by repetition and later on they were offered 20 H. armigera eggs. The experiment was kept on BOD cameras to 25 ± 2° C, UR 60 ± 10% and photo phase of 14 hours. Evaluating the following biological parameters: parasitism percentage, emergency percentage, number of adults emerged per egg, sex ratio, viability, and longevity and cycle duration. The parasitism percentage, viability and number of individuals per egg were higher for TM...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Controle biológico; Lagarta da soja; Parasitoide de ovos.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33426

Dynamics in global DNA methylation and endogenous polyamine levels during protocorm-like bodies induction of Cattleya tigrina A. Richard
Provedor de dados: 3
Autores: Almeida, Vivian; Fraga, Hugo Pacheco de Freitas; Navarro, Bruno Bachiega; Guerra, Miguel Pedro; Pescador, Rosete.
Cattleya tigrina is endemic to the Atlantic forest biome and classified as vulnerable in the Red Book of Brazilian Flora. In vitro techniques comprise valuable tools for the conservation of endangered plant species. The aim of the present study was to evaluate the morphological features, global DNA methylation levels and free polyamines during protocorm-like bodies (PLBs) induction of C. tigrina. Along with that, an efficient protocol for in vitro propagation of this species is proposed. The first evidences of PLBs induction in C. tigrina occurred at seven days in culture, starting from the basal portion of the leaf abaxial surface. A hypomethylation marked the beginning of cell differentiation, followed by an increased global DNA methylation at 35 days in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.00.00-0; 2.03.03.00-9; 2.03.06.00-8 orchids; Micropropagation; In vitro culture; Epigenetics; PLBs. Botânica.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36656

Petroleum biodegrading and co-resistance to antibiotics by Serratia marcescens strain isolated in Coari, Amazonas
Provedor de dados: 3
Autores: Peixoto, Ferdyanne Beatriz Sabóia; Peixoto, Jean Charles da Cunha; Assunção, Enedina Nogueira de; Peixoto, Elise Miranda; Pereira, José Odair; Astolfi-Filho, Spartaco.
Serratia marcescens is a Gram-negative bacillus, anaerobic facultative belonging to the family Enterobacteriaceae. S. marcescens strains are able to grow in the presence of different xenobiotic compounds, among them, petroleum and heavy metals. Xenobiotic resistant strains develop concomitant resistance to multiple antibiotics, referred to as co-resistance. The AMS212 strain was submitted to the microplate qualitative DCPIP - redox 2,6 dichlorophenol indophenol method. The quantitative test was carried out in Erlenmeyer flasks, followed by the change of color with the absorbance readings, trough the colorimetric method. The antibiotic resistance profile was evaluated by the Kirby-Bauer method. In the qualitative assay, the AMS212 strain altered the color...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbiologia 2.12.00.00-9 biodegradation; Characterization; DCPIP; Antimicrobial resistance. Microbiologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36223

Antioxidant activity and physicochemical analysis of passion fruit (Passiflora glandulosa Cav.) pulp native to Cariri region
Provedor de dados: 3
Autores: Lima-Neto, Abelardo Barbosa Moreira; Marques, Márcia Maria Mendes; Mendes, Francisca Noélia Pereira; Vieira, Ícaro Gusmão Pinto; Diniz, Derlange Belizário; Guedes, Maria Izabel Florindo.
The objective of this study was to determine the proximal composition, the physical and chemical characteristics and the in vitro antioxidant capacity (DPPH, ABTS and FRAP) of the pulp of the wild passion fruit (Passiflora glandulosa Cav.) from Cariri region, Ceara, Brazil. The results showed that the proximal composition and the caloric value of this passion fruit are similar to other species, but with a high ascorbic acid content. The fruit pulp showed low level of antioxidant activity and low level of polyphenolic compounds followed by three methodologies used. Due to high levels of titratable acidity (3.52) and total soluble solids (17.80° Brix), this fruit can be considered as a high value fruit for commerce. However, it is a species of passion fruit...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.00.00-0; 5.07.00.00-6 functional food; Agricultural; Dietary fiber; Phenolics; Natural antioxidants. Botânica.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34045

Ecotypes and virulence factors of Salmonella spp. detected in shrimp farms in State of Ceara, Brazil
Provedor de dados: 3
Autores: Carvalho, Fátima Cristiane Teles de; Rodriguez, Marina Teresa Torres; Menezes, Francisca Gleire Rodrigues de; Sousa, Oscarina Viana de; Hofer, Ernesto; Vieira, Regine Helena Silva dos Fernandes.
 Our objective was to group in ecotypes 12 serovars of Salmonella isolated from shrimp farming environments in the State of Ceara (Northeast Brazil). Grouping was done based on genotypic virulence factors. Two groups based on the similarity of the Box-PCR were identified: a group consisting of three strains (01 S. ser. Madelia serovar and 02 S. ser. enterica subs. houtenae) and another group consisting of nine isolates (02 S. ser. Saintpaul serovars; 03 S. ser. Infantis; 02 S. ser. Panama; 01 S. enterica subs. enterica; and 01 S. enterica subs. houtenae). Distribution pattern of the serovars was not influenced by the origin matrices (water and sediment). Plasmid virulence genes pefA and invA were detected, unrelated to the serovar and environmental origin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sediment; Water; Enteric bacteria.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34607

Amblyomma aureolatum (Pallas, 1772) (Acari: Ixodidae) parasitizing margay cat (Leopardus wiedii) (Schinz, 1821), in Uruguaiana, Rio Grande do Sul, Brazil
Provedor de dados: 3
Autores: Pinto, Diego Moscarelli; Aguiar, Cintia Lidiane Guidotti; Villarreal, Pablo Villarreal; Becker, Marcelo; Tavares, Nicolas Conter; Martins, Natália Soares.
Ticks are parasites of wild animals, affecting diverse and several species. The present study reveals the presence of Amblyomma aureolatum parasitizing the margay cat (Leopardus wiedii) in the city of Uruguaiana. This is the first report of the presence of this tick specie in this city, situated in west (29° 45' 18" S 57° 05' 16" W) of the state of Rio Grande do Sul, Brazil, indicating a wide host diversity. 
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tick; Wild animals; Ixodidae.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34630

The genus Senna Mill. (Leguminosae: Caesalpinioideae) in a fragment of the Ecological Station Raso da Catarina, Bahia, Brazil
Provedor de dados: 3
Autores: Correia, Cláudia Letícia de Souza Barros; Conceição, Adilva de Souza.
  Senna comprises about 300 species with circuntropical distribution, widely represented in the Americas, also occurring in Africa, Australia, Asia and Oceania. The Brazil includes 80 species, of which 27 are endemic, 50 reported from Bahia and 22 recorded from the Caatinga. The floristic survey of Senna in the Ecological Station Raso da Catarina included analysis of specimens collected March 2010 to October 2011. The analyses were supplemented with dried collections from the following herbaria: ALCB, EAC, HRB, HUEFS and MBM. Seven taxa were recorded. The most representative taxa in the area were Senna rizzinii H.S.Irwin &amp; Barneby and S. acuruensis (Benth.) H.S.Irwin &amp; Barneby var. acuruensis. The genus can be found in a variety of environments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biológicas; Botânica; Florística Biodiversity; Floristics; Semiarid. Botânica.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32850

Material particulado dentro del macrófago alveolar
Provedor de dados: 40
Autores: Falcon-Rodriguez,Carlos Ivan; García-Alonso,Larisa Idania; Segura-Medina,Patricia.
La inhalación de partículas tóxicas ambientales es un problema de salud pública en todo el mundo. Para prevenir el daño, los pulmones contienen a los macrófagos alveolares, los cuales son la defensa primaria del sistema inmune, ya que fagocitan los tóxicos o partículas alérgicas. Morfológicamente, el material particulado dentro de los macrófagos alveolares se observa como numerosos gránulos redondos de varios tamaños. En cobayos, la inhalación de partículas finas en tiempo real mostró gránulos re­dondos oscuros dentro de los macrófagos. Después de la exposición a las partículas, el macrófago alveolar puede activar algunas citocinas como TNF-&amp;#945;, IL-1&amp;#946;, IL-6, IL-8, and GM-CSF, las cuales incrementan la respuesta inflamatoria o activan la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lavado broncoalveolar; Fagocitosis; Material particulado; Contaminación atmosférica.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000100003

Evaluación de la toxicidad subcrónica de la variedad colombiana de Smallanthus sonchifolius (Yacón) en ratas hembra
Provedor de dados: 40
Autores: Rodríguez Espinosa,Jhon D; Torres Wilches,Miguel A.
Smallanthus sonchifolius (Yacón) es una planta usada comúnmente por largos periodos de tiempo con el fin de ayudar en el control de la diabetes y otros desordenes metabólicos, por lo que con el propósito de evaluar la toxicidad subcrónica de la variedad colombiana de esta planta, fueron tratadas 30 ratas hembra de 8 semanas de edad dividas en 6 grupos. A cada uno de ellos se administró durante 28 días una de las siguientes dosis de infusión acuosa liofilizada (500, 250 y 125 mg/kg de peso), evaluando paralelamente grupos control (positivo y negativo) e incluyendo entre ellos grupos con y sin dieta hipercalórica. Para el seguimiento del perfil metabólico de los animales, se tomaron muestras de sangre periódicamente durante el ensayo y se evaluaron los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Smallanthus sonchifolius; Toxicidad subcrónica; Diabetes; Síndrome metabólico.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000300003

Intoxicação por diquat
Provedor de dados: 40
Autores: da Silva Baptista Faria,Rita Isabel.
O paraquat e o diquat são herbicidas de contacto do grupo dos bipiridilos, utilizados largamente para controlo de ervas daninhas. A importância deste grupo de herbicidas reside na sua utilização frequente para fins suicidas e pela inexistência de antídoto ou tratamento médico específico. O envenenamento com diquat é muito menos comum que com o paraquat e por isso existem poucos casos descritos na literatura. A dose letal de ambos é sobreponível, contudo o diquat é considerado menos tóxico devido ao menor dano pulmonar. Por outro lado, o diquat tem efeitos tóxicos graves sobre o sistema nervoso central. Por este motivo os sinais de neurotoxicidade pelo diquat são os mais relevantes e incluem sinais de parkinsonismo. O rim é a principal via excretora do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intoxicação; Diquat; Lesão renal aguda; Revisão.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000200001

Aislamiento y caracterización de la miotoxina I del complejo Bothrops neuwiedi (yarará chica)
Provedor de dados: 40
Autores: Geoghegan,Patricia Andrea.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000100004

Olindias sambaquiensis en la costa Atlántica Argentina
Provedor de dados: 40
Autores: González,Claudia Analía; Bertrand,Roxana Andrea.
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000200003

Escorpiones y escorpionismo en la provincia de Jujuy
Provedor de dados: 40
Autores: Ojeda,Marta A; Neder de Román,Lilia E.
En Sudamérica los escorpiones que revisten importancia sanitaria pertenecen a la familia Buthidae y al género Tityus. En Argentina existen seis especies: T. trivittatus Kraepelin, T. confluens Borelli, T. bahiensis (Perty), T. argentinus Borelli, T. paragua­yensis Kraepelin y T. uruguayensis Borelli, de las cuales sólo las tres primeras demostraron poseer venenos tóxicos capaces de ocasionar accidentes fatales. En Jujuy la especie más importante fue T. confluens y recientemente se registró T. trivittatus. También está presente T. argentinus, que hasta el momento, no reviste riesgo sanitario. Los objetivos del presente trabajo fueron identificar los escorpiones del género Tityus (Buthidae), obtenidos en cinco instituciones de referencia de la provincia de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tityus; Epidemiología; Distribución; Jujuy.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000100002

Ingesta de cáusticos alcalinos: intoxicación frecuente y prevenible, con secuelas graves
Provedor de dados: 40
Autores: Docampo,Patricia Cynthia; Méndez,Marta; Spera,Marina; Voitzuik,Ana; Greco,Vanina.
Las sustancias cáusticas son productos químicos capaces de provocar lesiones de diferente gravedad, según sea la concentración del producto, el tiempo de contacto y la vía de ingreso. La exposición es habitual por tratarse de productos utilizados en el hogar como destapacañerías y/o limpiahornos. Los cáusticos alcalinos producen necrosis por licuefacción de los tejidos. La ingesta causa edema, ulceraciones, sangrado, placas blanquecinas e intensa actividad fibroblástica con cicatrización en tres semanas. El esófago se afecta más que el estómago, en especial cuando se trata de productos sólidos o en escamas. La secuela observada es la estenosis esofágica, la cual puede requerir desde procedimientos de dilatación hasta cirugía de reemplazo, con alta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cáusticos alcalinos; Hidróxido de sodio; Intoxicación con cáusticos alcalinos; Sustancias cáusticas.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000200002

Distribución de esteroides estrogénicos en plantas de tratamiento de aguas residuales municipales
Provedor de dados: 40
Autores: Ferreira,Aldo P.
En la actualidad, existe una preocupación creciente por la presencia de estrógenos en el medio acuático, donde pueden ser introducidos a partir de aguas residuales después de su eliminación incompleta en las plantas de tratamiento. Las aguas residuales sistemáticamente reciben estrógenos naturales y sintéticos, y por lo tanto una comprensión más profunda de la suerte de ellos en el medio ambiente es necesaria. Se evaluaron los niveles de estrógenos en los efluentes de las Plantas de Tratamiento de Aguas Residuales (PTARs) Penha e Ilha do Governador, ambos de tipo convencional de flujo continuo de lodo activado con aireación prolongada. Fue utilizado como el parámetro de determinación de algunos compuestos de interés como estrógenos naturales [estrona (E1),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrógeno; Planta de tratamiento de aguas residuales; Contaminación ambiental; Salud pública.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000300002

Genotoxicidad de los hidrocarburos aromáticos policíclicos extraídos mediante el sistema diclorometano-etanol-tolueno en muestras del aire de Cúcuta, Norte de Santander, Colombia
Provedor de dados: 40
Autores: Quijano Parra,Alfonso; Quijano Vargas,Mónica Juliana; Meléndez Gélvez,Iván.
Los contaminantes del aire han sido y siguen siendo, los principales factores que contribuyen a las enfermedades crónicas como el asma y enfermedades cardiovasculares. La contaminación del aire por material particulado (PM) es un problema mundial y en los últimos años, el PM se ha convertido en un tema importante de investigación ya que tiene un impacto negativo significativo en la salud humana; el PM es generado por las actividades industriales y tubos de escape de vehículos de motor. Sin embargo, diversos componentes nocivos del PM, como los hidrocarburos aromáticos policiclicos (HAP) en general, son sos­pechosos de ser carcinogénicos. Este trabajo tiene como objetivo identificar los HAP presentes en el PM2.5 del aire de Cúcuta, extraídos por primera...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ensayo cometa Fraccionamiento del PM2.5 Benzo[a]antraceno Benzo[b; K]fluorantenos.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000100001

Consumo excesivo de cafeína y eventuales poblaciones de riesgo
Provedor de dados: 40
Autores: Carnevali de Falke,Susana; Degrossi,María Claudia.
La cafeína (1,3,7-trimetilxantina), es uno de los componentes alimentarios más consumidos y estudiados. Aunque un consumo moderado no implica riesgos para la salud, un ingesta excesiva puede conducir a efectos adversos, tales como ansiedad, irritabilidad, palpitaciones e insomnio. Con el propósito de caracterizar el riesgo para la salud en mujeres adultas de 18 a 70 años en Argentina, se abordaron los siguientes objetivos: determinar el contenido de cafeína en cinco bebidas disponibles en el mercado argentino y con estos datos y otros de fuentes bibliográficas estimar la ingesta media diaria de esta sustancia en dicha población para establecer si existen grupos en riesgo, estudiar la relación de dicha ingesta con el lugar de residencia y determinar el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cafeína; Ingesta diaria; Mate; Riesgo.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000300001

Lombrices de tierra como biomarcadores de efecto y exposición a xenobióticos metálicos (plomo y cadmio) en los diques Cruz de Piedra y La Florida
Provedor de dados: 40
Autores: Curvale,Daniela Alejandra.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432017000300004

The effect of air distributor shapes at fish ponds on the dissolved oxygen in water
Provedor de dados: 111
Autores: Awad, Amal.
Fish is one of the most important sources of protein food. A part of protein shortage problem in developing countries especially Egypt could be solved by aquaculture. Aeration is widely used in fish culture and many types of aerators have been tested for effectiveness. The aim of this research is to find out the best air distributor shapes to supply fish ponds with the enough dissolved oxygen (concentration and saturation). To achieve this aim Seven forms of air distribution density was used in addition to Two different inter-holes diameters (1mm – 2mm) and Two different inter-holes distances (15cm – 30cm). This study was carried out during seasons 2014 inside a private farm located at Kafr El-Sheikh Governorate, Egypt. The results revealed that, the best...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering distributor shapes; Dissolved oxygen.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4437

Yield Components of Sweet Corn (Zea Mays) and Some Soil Physical Properties towards Different Tillage Methods and Plant population
Provedor de dados: 111
Autores: Shamsabadi, Hossein-Ali Tash; Ahmad, Desa; Azmi, Yahya.
A field experiment was conducted to investigate the effects of the three tillage systems and three corn plant populations on selected soil physical properties and yield components of sweet corn for Serdang soil series (Typic Paleodults) at the Research Farm of University Putra Malaysia (UPM) in Malaysia. The experimental design was a 2×3 factorial treatments based on Randomized Complete Block Design (RCBD) for soil analysis and a 3×3 factorial treatment based on RCBD for yield and yield components of sweet corn (Zea mays) analysis with three replications. The three tillage systems were moldboard plow followed by once disc harrowing (MPD), disc plow followed by once disc harrowing (DPD) and rotary cultivator (RC) only, as control on soil physical properties...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land preparation; Soil Physics; Sweet Corn; Yield.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4082

Optimisation of Process Parameters for Vacuum Concentration and Foaming Behaviour of Aloe vera (Aloe barbadensis Miller) Gel
Provedor de dados: 111
Autores: Mahapatra, Suryakanta; Srivastav, Prem Prakash; Halder, Kumaresh.
This study on Aloe vera gel was conducted to investigate the optimum condition for vacuum concentration in relation to its physicochemical properties and optimum foaming condition of the concentrated products which was used as raw material of foam mat drying. Twenty experiments were conducted for vacuum concentration at different temperature and time combinations. Solutions of numerical optimisation were obtained by using Design-Expert program 7.0 of stat-Ease software for the optimum concentration condition covering the criteria as temperature 55⁰C and time 60 min for concentration are- ascorbic acid 4.095%, total soluble solids  3.6 ºBx, total solids 3.7% , acidity 0.0698 % (as malic acid) and pH 4.97, while the experimental values at temperature 55⁰C...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post harvest engineering and Food Processing optimisation; Aloe vera gel; Vacuum concentration; Temperature; Time; Foam expansion; Foam stability.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3709

Effect of near infrared reflection and evaporative cooling on quality of mangoes
Provedor de dados: 111
Autores: Kipruto, Korir Meshack.
Mango fruit is valuable in Kenyadue to its nutritive and economic value.  However, at least 40% to 45% of the fruit is lost during postharvest handling due to inadequate storage facilities.  This study aimed at investigating the effect of combination of near infrared reflection (NIR) and evaporative cooling (EC) on quality of mangoes.  Freshly mature Apple and Kentmangoes were selected, cleaned and stored in NIR store (SNR).  The shelf-lives and quality attributes namely physiological weight, colour and firmness were evaluated on daily basis against similar fruits stored in an equivalent non-NIR store (SNNR).  Storage under room conditions (RC) was used as control experiment.  Digital scale, Minolta colour difference meter and penetrometer were used to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural processing Engineering; Post-harvest technology Apple and Kent mangoes; Near infrared reflection; Evaporative cooling; Quality; Kenya.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3858

Effect of pretreatments and drying methods on some qualities of dried mango (Mangifera indica) fruit
Provedor de dados: 111
Autores: Osunde, Zinash Delebo.
The effect of pretreatments and drying methods on some qualities of dried mango fruits was studied.  The fruit slices were pretreated with three pretreatments – ascorbic acid dip at 31% w v-1 concentration, honey dip at 20% v v-1 concentration and steam blanching at a temperature of120°C and dried using three drying methods (sun, solar and oven drying).  In sun and solar drying the mango was dried for eight hours, while for oven drying six hours at an average temperature of32°C,41°C and65°C respectively.  Sliced mango fruits were soaked in the prepared solutions for four minutes, while the blanching was done for two minutes.  There were control samples for each drying methods.  Drying curves were generated and the drying rate, proximate composition,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural engineering mango; Pretreatments; Drying methods; Qualities; Vitamin C and β-carotene.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3877

Conservation Tillage Assessment for Wheat cropping in the Central Iran: Energetic, economics and environmental aspects (Case Study: Isfahan Province)
Provedor de dados: 111
Autores: Aliasgarian, Saeed.
Conservation tillage due to some properties such as reduction in time and energy required for seedbed preparation is going to be an unavoidable choice in region with arid and semiarid climate. This research was conducted at Murchehkhort farms, central region of Iran to energetic, economics and environmental evaluation of different tillage systems. The study was planned as a completely randomized block design with three tillage treatments replicated three times. The tillage treatments were: no-tillage (NT): direct drilling, reduced tillage (RT): chisel plow and roller packing as a combined machine followed by a light disking and drilling; and Conventional tillage (CT): moldboard plow followed by two heavy harrow diskings and drilling. NT Compared to CT and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: No-tillage; Reduced tillage; Energy efficiency; Gross margin; Herbicide.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4049

High-speed photographic analysis of the influences of rake angle on the soil crushing of deep loosening
Provedor de dados: 111
Autores: Chengguang, Hang; Yuxiang, Huang.
Rake angle is a key parameter of subsoiler structural design and has important impacts on subsoiler performance. In this study, the high-speed photographic technique is used to understand the mechanisms by which the rake angle of an arrow subsoiler (angles of 18°, 23°, and 28°) impacts soil crushing. The following results were obtained. (1) Rake angle is the main factor that influences the soil crushing process. Changing the rake angle can induce changes in the interactions between the subsoiler and soil, impacting soil crushing performance. (2) Rake angle has important impacts on the soil disturbance state. The horizontal soil disturbance distance increases and the vertical soil elevation decreases when the rake angle is increased. For a fixed soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agriculture engineering Subsoiler; Rake angle; Soil loosening performance; High-speed photography; Experimental study.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3741

Preparation of silica powder from rice husk
Provedor de dados: 111
Autores: Younesi Alamooti, Mohammad.
Silicon dioxide (SiO2) is the most abundant mineral in the world.  Plants are the source of this mineral.  In recent decades, with the advent of nanotechnology, silica nanoparticles have been found new applications in chemical industry, textile, packaging, biotechnology, agriculture and medicine.  Rice husk and straw are rich sources of minerals.  Rice husk (RH) has more than 20% silica.  Using thermal process in presence of different gasses, the sample of ash of husk and bran of rice produced.  To investigate the effect of heat treatment in different conditions, the properties of the samples were determined. Rice husk ash solution was poured on soda solution.  Then silica was separated and sodium silicate was formed.  By separation and titration of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Farm machinery; Post harvest silica nanoparticles  rice husk  chemical reduction  rice byproduct.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3796

Effect of digester surface area on biogas yield
Provedor de dados: 111
Autores: Ogunwande, Gbolabo Abidemi.
Poultry manure, cow dung and swine manure were digested in cube-shaped anaerobic digesters of equal volume but different surface areas (SAs) (5.38, 10.0 and 11.6 dm2) in a two-factor experiment. The digesters were agitated once a day during the experiment. The results showed that neither the manure type nor SA affected (p &gt; 0.05) substrate temperature and pH, but both had (p ≤ 0.05) on biogas yield (BY. Poultry manure had the highest BY followed by swine manure and cow dung (1.00, 0.59 and 0.11 dm3 kg-1 VS fed day-1, respectively). Within the SAs investigated, BY increased as digester SA increased (0.27, 0.68 and 0.74 dm3 kg-1 VS fed day-1 for 5.38, 10.0 and 11.6 dm2, respectively). The results of the regression analysis showed that digester diameter to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas yield; Digester surface area; Poultry manure; Swine manure; Cow dung.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3861

Ergonomic investigation of workers in tea factories using REBA and OWAS methods – case study: (Langroud Region, Guilan, Iran)
Provedor de dados: 111
Autores: Soheili-Fard, Farshad; Rahbar, Amir; Marzban, Afshin.
Work-related Musculoskeletal Disorders (WMSDs) are a leading cause of disability, work time loss and economic loss in both industrialized and developing countries. WMSDs include muscles, bones, joints, nerves and blood vessel disorders. According to the studies done by some researchers, lack of harmony between technology and the technology users in workplace can degrade the product quality and increase the injuries. In the present study, an ergonomic investigation was conducted and the position and posture of the workers of tea factories were evaluated. REBA and OWAS methods were used for analyzing the postures. The energy expenditure of workers was calculated by heart rate monitoring. In this study, 6 tea factories were considered and totally 48 workers...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ergonomic; Tea factory; Heart rate; Withering; Grading; Curling.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4096

Evaluation of PHilMech Cabinet Dryer for Drying Mango Slices
Provedor de dados: 111
Autores: Flores, Edgar Dulay.
The performance of PHilMech cabinet dryer in drying mango slices was evaluated in terms of efficiency, product quality and cost. The dryer, originally designed with kerosene burner and rice hull furnace as heat source, was retrofitted with liquefied petroleum gas (LPG) heating system. Its performance was likewise compared with existing dryers of Pangasinan Tropical Fruits Multi-Purpose Cooperative (PTFMPC) in Manaoag, Pangasinan, Philippines. Results showed that mango slices with initial moisture content from 65.4 to 72.4 percent were uniformly dried in 9.5 to 10 h to final moisture content of 9.6 to 9.7 percent using an average drying temperature of 53.2 to 54.2 oC using the PHilMech dryer. The LPG heating system had higher heating system efficiency than...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3945

Prediction of total solar irradiance on tilted greenhouse surfaces
Provedor de dados: 111
Autores: Ronoh, Erick K.
Solar radiation is the driving force for the surface energy balance in buildings such as greenhouses.  The greenhouses are generally tilted towards the sun in order to maximize the solar irradiance on the surfaces.  Precise computation of the solar radiation received on these surfaces assumes an important role in the energy simulation.  It is practical to calculate the total solar irradiance on the tilted surfaces based on the solar global and diffuse radiation intensities on horizontal surfaces.  In this work, a south-facing thermal box inclined at 26.5° from the horizontal was used for solar radiation measurements.  Additionally, the recorded solar radiation data were retrieved for the study location and used to develop an empirical correlation.  The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solar radiation; Greenhouses; Tilted surface; Diffuse fraction; Clearness index.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3903

Drying characteristics and modeling of tomato thin layer drying in combined infrared-hot air dryer
Provedor de dados: 111
Autores: Sadin, Rasool; Chegini, Gholamreza; Khodadadi, Mehdi.
In this study tomato slices were dried with three thicknesses (3, 5 and 7 mm), three temperatures (60°C, 70°Cand 80°C) and air speed of 1.1 ms-1 in a combined infrared-hot air dryer.  Distance from infrared source was 70 cm, while, input air temperature was 60°C.  The experiment was conducted as factorial based on a completely randomized design.  Results showed that energy consumption reduced along with the increase in temperature and slice thickness.  Decrease in the slice thickness from 7 to 3 mm resulted in a significant decrease in drying time.  Maximum diffusion coefficient was related to the thickness of 7 mm and the temperature of 80°C, while, the minimum value was related to the thickness of 3 mm and the temperature of 60°C.  Effective diffusion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drying time of tomato; Diffusion coefficient; Effective diffusion coefficient; Activation energy; Tomato thin-layer drying; Infrared-hot air dryer.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3780

DESIGN AND CONSTRUCTION OF A MOTORIZED GINGER JUICE EXPRESSION MACHINE
Provedor de dados: 111
Autores: Onu, Onu olughu; Simonayan, Kayode Joshua.
A motorized ginger juice expression machine (GJEM) was designed and developed using locally available materials. The developed machine was tested for juice yield, juice expression efficiency, juice expression loss and juice throughput capacity. Fresh ginger rhizomes at 78.69% moisture content was used for the test. The result revealed a juice yield, expression efficiency, expression loss and throughput capacity of 53.77 %, 78.78 %, 25.5% and 7.5kg/hr respectively. The GJEM is powered by a 3 hp single-phase electric motor and is affordable. Drying of ginger rhizome deteriorates the oleoresin content and hence, the value and quality of ginger. The motorized ginger juice expressing machine offers an affordable and simple method of processing fresh ginger...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural and Bioresource Engineering; Bioprocess and Food Engineering Expression  Pulverize  Ginger juice  Expression efficiency  Expression loss  Juice yield.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4099

Development of passive evaporative cooling systems for tomatoes Part 1: construction material characterization
Provedor de dados: 111
Autores: Olorunnisola, Abel Olajide; Okanlawon, Sunday Adewale.
The management of large volumes of agroforestry residues constitutes one of the global environmental challenges today.  These residues tend to accumulate in the environment, resulting in water, air and land pollution.  In response to rising costs associated with waste disposal and increasing environmental demands, the sustainable conversion of wastes into useful products is becoming increasingly important.  In the same vein, the quality and shelf life of tomatoes are compromised within a few days if not properly stored and preserved.  Although, a number of researchers have worked extensively on the development of evaporative cooling systems in an effort to tackle this menace, finding durable construction materials remains a challenge.  The broad objective...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agro-forestry residues; Composites; Evaporative cooler; Tomatoes.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3876

Cowpea response to compaction and mulching on a sloping loamy sand soil in Southern Nigeria
Provedor de dados: 111
Autores: Raphael, Davids Olorungbon.
Mulching the surface of soil after machinery traffic can offset some of the adverse effect of compaction of the soil caused by the machine.  Thus, this study reported the response of cowpea (vigna-unguiculata) to compaction and mulching with elephant grass (Pennisectum purpuereum) on loamy sand soil in Southern Nigeria.  A randomized split-block design of field plots with compaction levels as the main block and the mulching levels as the sub-block was used.  The compaction treatment consisted of 0, 5, 10 and 15 passes of a tractor with a 31 kPa contact pressure while the mulching treatment consisted of 0%, 30%, 60% and 90% areal ground cover.  The zero percent treatment served as control and each treatment was replicated twice.  The soil dry bulk density,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural and Biosystems Engineering/ Soil and Water Engineering Unit cowpea; Tractor traffic; Mulch cover; Yield parameters; Dry bulk density; Penetration resistance.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3926

Development and performance evaluation of manual/bullock operated multicrop planter for hilly region
Provedor de dados: 111
Autores: Singh, Sukhbir; Sahoo, D. C.; Bisht, J. K.
In hills, sowing of various crops is generally performed manually by broadcasting of seeds, and that not only consume higher seed rate but also cause uneven distribution of seed at improper depth and moisture, poor germination, unhealthy plants and ultimately lower the yield.  To overcome these problems, a single row manual/bullock multicrop planter was designed and developed for line sowing of wheat, maize, soybean, lentil, pea, mustard, millet etc. for hilly small fields.  The power and pull requirements were 74.6 W and 12 kgf, respectively.  The machine has a nylon made cell type seed metering mechanism with 4 types of cells of different sizes on a roller, and also has a fluted roller for fertilizer metering.  Shovel type and Inverted T-type furrow...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multicrop planter; Line sowing; Broadcasting; Hills.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3696

Quantification and prediction of the concentration of different dilutions of Lambda Cyhalothrin through colorimetry and neural networks
Provedor de dados: 111
Autores: Buitrago, Jorge Eliecer; Ramos Sandoval, Olga Lucia; Amaya Hurtado, Dario.
The Lambda Cyhalothrin is an insecticide of broad spectrum used in agriculture, to reduce the loss in crops, due to the attack of some pests. This compound has the presence of the radicals chlorine, fluorine and cyano, which can cause serious effects on human health when are ingested. Because of this, exist the need of develop non - destructive methods, capable of determining the concentration of the pesticide in farming, for eradicate the presence of this substance on the fruit used as food. To achieve this, commercial Lambda Cyhalothrin and distilled water were used, to obtain the recommended dilutions for the treatment of various pests in agriculture. The samples were analyzed through colorimetry, obtaining the characteristic color spaces for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Color space; Neural fitting; Wavelength; Insecticide.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4092

Analysis of Influencing Factors and Decision Criteria on Infield-Logistics of different Farm Types in Germany
Provedor de dados: 111
Autores: Mederle, Michael; Bernhardt, Heinz.
In future increasing production efficiency in agriculture will not only be achieved by rising machinery working widths but more and more by optimization of entire production process chains. The more machines are interacting the higher will be the specific optimization potential.Navigation not only to the fields but also within the fields will certainly contribute to make use of these efficiency reserves. Necessary therefore is the knowledge of potential influences on infield-logistics to be able to navigate agricultural machinery in the fields effectively and process optimized.Preliminary studies based on GPS-lane analysis in different German agricultural regions and in Central Canada show that decisions on specific infield patterns to a certain degree...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural logistics; Process optimization; Infield navigation; Vehicle guidance; Decision criteria.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4058

Determination of viscoelastic properties of dates (Mazafati Variety)
Provedor de dados: 111
Autores: kamgar, saadat; Zare, Dariush; Ebadi, Hossein; Ghofrani, Aliakbar.
The knowledge of rheological properties of agricultural fruits can be significantlyhelpful in design and fabrication of the appropriateprocessing machines .In this study, the viscoelastic characteristics of date (Mazafati variety) were investigated. Experimental tests were established in six moisture levels (7.5, 9.0, 10.8, 12.8, 17.59 and 25.5 on dry basis) and temperature of 45ºC which contributed to obtain a suitable model. To achieve the desired moisture levels, various saturated salts were used. A chamber capable of controlling temperature was fabricated and placed around the plunger of texture analyzer to monitor the temperature during the experiments. Tests were conducted using an Instron Universal Testing Machine in the way that, samples were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosystem engineering; Food process Viscoelastic properties; Mazafati; Date; Creep test; Moisture.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3812

Computer-aided engineering (CAE) approach to design a cultivator for small farm holdings in the West Bengal state of India
Provedor de dados: 111
Autores: Mandal, Dipankar.
Small and marginal farms are one of the big challenges for farm mechanization in the West Bengal state of India. Since the majority of farms are marginal with land holding less than one hectare, use of high capacity equipment is not feasible. The major constraints in the promotion of farm mechanization include the fragmented land holding, low investment capacity of the farmers, the requirement of equipment for each agro-climatic zone of West Bengal, inadequate repairs and maintenance facilities etc. So, small agricultural machinery is gaining importance for research. The cultivator is a secondary tillage tool mostly used in Indian farms. A 5-tyne cultivator may be suitable for small farm lands. So, in this present work, a 5-tyne cultivator was designed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural engineering; Farm machiney; Computer aided design cultivator; Marginal farm; CAE; CAD; Agriculture; Farm mechanization.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4162

Discharge analysis for a system approach to river basin development with Subak irrigation schemes as a culture heritage in Bali
Provedor de dados: 111
Autores: Yekti, Mawiti Infantri; Schultz, Bart; Norken, I Nyoman; Hayde, Laszlo.
Paddy terraces in Baliare important cultural landscapes.  Traditionally, the flow within a river basin has been managed using a traditional technology called Subak irrigation.  These schemes are based on the cropping patterns and indigenous water management, which are organized by the respective Subak associations.  Unfortunately, this traditional technology is facing challenges: water shortage and competition with other water users.  In order to sustain agriculture production of Subak irrigation schemes in the Yeh Ho River Basin, the available discharge in Yeh Ho River was analyzed in this study in light of the supply to the Subak irrigation schemes within the river basin.  By using the Weibull formula, the historic supply data of several diversion weirs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land and water development; Hydrology; Hydraulics; Irrigation and drainage river basin  Subak irrigation  Subak association  paddy terrace  weir  water distribution unit  continuous flow.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3935

Role of charcoal addition on infiltration processes and soil water content characteristics of a sandy loam soil
Provedor de dados: 111
Autores: Villagra-Mendoza, Karolina.
Terra preta (TP) is a soil amendment which is enriched with powdered charcoal, with nutrient sources from organic residues, and that constitutes a resource to improve soils for sustainable land use systems (Glaser, 2007).  Terra preta-dark soil is inspired by the highly successful historic practice of soil building in the Amazon and other parts of the world.  This work involves a relatively unexplored topic: the comprehension of infiltration processes and soil water content characteristics in a sandy loam soil combined with different fractions of terra preta amendments.  This analysis contributes to a better understanding of the relationship between fractions of charcoal in terms of terra preta content and soil water holding capacity.  First, a physical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil conservation charcoal; Infiltration; Sandy loam; Sustainable farming; Terra preta; Water holding capacity.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3770

Moisture Sorption Isotherms and Mathematical Model Selection for Dried Sandfish (Holothuria scabra)
Provedor de dados: 111
Autores: Yaptenco, Kevin Fernandez.
Dried sandfish (Holothuria scabra) is often poorly dried by artisanal fishers in the Philippines, resulting in downgrading of the product. To establish recommended moisture content (MC) for a stable product, this study aimed to develop moisture sorption isotherms (MSI) at 30, 45 and 60°C at ten levels of water activity (aw) using an isopiestic method based on saturated salt solutions. MSI data was fitted to six mathematical models by non-linear regression analysis. Water vapor transmission rate (WVTR) of low-density polyethylene (PE) and polypropylene (OPP) film was measured at 30 and 35oC. A mass-balance model was used to predict shelf life and moisture content during storage based on MSI and WVTR data. MSI of H. scabra followed a Type III curve, which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural engineering; Food processing; Drying Moisture sorption  sandfish  sea cucumber  shelf life  water activity  Philippines.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3807

Design a cutter prototype to separate date palm leaflets from fronds (Rachis)
Provedor de dados: 111
Autores: Ismail, Nahed Khairy.
This study was carried out, at Dept. of Agric. Eng., Faculty of Agric., Mansoura Univ., Egypt during 2014 spring season, to design and evaluate a cutting prototype performance and production as a date palm leaves components (fronds, leaflets and spines).  The tested treatments include saw speed (167.5, 251.2, 334.9 and 418.7 rad s-1), saw teeth inner spacing (4, 5 and 8 mm) and feeding speed ratio (1:1, 1:1.25, 1:1.67 and 1:2.50).  The study concluded that the optimum operation conditions of saw speed of 334.9 rad s-1, saw teeth inner spacing of 8 mm and 1:1.25 feeding speed ratio achieved cut fronds productivity of 1051.5 m h-1, cut leaflets and spines productivity of 183.86 kg h-1, cutting leaflets efficiency of 99.32%, leaflet losses of 0.68 %, frond...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering-Bio-system Engineering Date palm leaves; Leaflet; Frond; Efficiency; Circle saw; Losses; Energy.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4043

DESIGN AND FABRICATION OF A SCREW CONVEYOR
Provedor de dados: 111
Autores: Olanrewaju, Taofiq Olayinka.
Grain must be transported from one location to another. Several disadvantages are associated with grain transportation, especially manual loading into trailers and silos. The need for a grain handling equipment became pertinent; hence, this study designed and fabricated a simple and medium size auger aimed at conveying grains upward into a silo. The conveyor was fabricated from pure local materials considering the techno – economic properties. Tests were run on the conveyor using granular materials like maize, sorghum and gari at 13% moisture content. The angles of test were 00, 150, 300, 450, and 600 for each grain. It was found capable of loading an average size silo of 2.68 m3 in 15 minutes. The conveyor has an efficiency of 99.95%, and average output...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain; Conveyor; Auger; Capacity.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4097

Criteria for the Extraction of Fish Oil
Provedor de dados: 111
Autores: BAKO, TANKO; VICTOR, UMOGBAI I; J, AWULU O.
The effect of pre-treatment of mackery (Scomber scombrus) on oil recovery and quality was investigated. Fish oil was extracted using the screw expeller press after heat pre-treatment of the fish sample. The effect of cooking temperatures and cooking times was evaluated. It was observed that the oil yield has a positive relationship with cooking temperature. The oil yield increased with increasing cooking temperature at all the cooking times investigated and also increased with increasing cooking time from 5-15 minutes and then decreased for 20 minutes cooking time at all the cooking temperatures investigated. The results revealed that a highest yield of 22.8 % was obtained when the fish was treated at 90 0C cooking temperature for 15 minutes. The lowest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Criteria; Fish Oil; Pre-treatment; Extraction; Oil yield.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4021

Root growth of sugarcane irrigated with wastewater through subsurface drip system
Provedor de dados: 111
Autores: Santos, Leonardo Nazário Silva dos; Barbosa, Eduardo Augusto Agnellos; Nazário, Aline Azevedo; Gonçalves, Ivo Zution; Ohashi, Augusto Yukitaka Pessinatti; Matsura, Edson Eiji; Pires, Regina Célia de Matos.
The use of wastewater in agriculture is an alternative to provide water and nutrients for plants.  However, root system development can be affected by water quality and depth of wastewater applied.  The objective of this study was to evaluate the sugarcane root system growth using a minirhizotron in a field irrigated with treated sewage effluent and freshwater by subsurface drip irrigation.  The treatments tested were two drip line installation depths (0.2 and 0.4 m); two water sources (treated sewage effluent and freshwater) and non-irrigated plots as control.  The experiment was a randomized block design with a 2×2 + 1 factorial, with three replications.  The root system evaluation (root length and spatial distribution) was performed using a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Root scanner; Minirhizotron; Drip irrigation; Time domain reflectometry (TDR); Saccharum officinarum L.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3881

Evaluation of the vibrations transmitted to the hand-arm system in the use of portable olives harvesters
Provedor de dados: 111
Autores: Vallone, Mariangela.
The use of portable harvesters in olives harvesting is becoming increasingly, especially in Sicily, south Italy, both to reduce the costs of production and to assure the olive oil quality. Nevertheless, it’s well known that the use of such tools may involve risk of exposure to hand-transmitted vibration that is a potential cause of muscular/skeletal pains in hand–arm system, and specific pathologies such as Hand–Arm Vibration Syndrome (HAVS), Vibration-Induced White Finger (VWF) and Carpal Tunnel Syndrome (CTS). The aim of this study was to assess the level of exposure to hand-arm vibration of the operators during the use of portable shakers for olives harvesting. Two different commonly used types of tools were evaluated performing both laboratory and...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3927

First steps in the grape mechanization process in Brazil: quantitative features
Provedor de dados: 111
Autores: da Costa Neto, Wilson Valente; Izard, Miguel Garrido; Elorza, Pilar Barreiro; Domingues, Fabrício.
Grape harvest is still fully manual in the majority of farms in Brazil (above 99%), yet the structure of the fields and the vine trellis are already prepared for it in a 24% of the cases. Besides, only the large-size farms are prepared for performing a detailed analysis of working capacity, product quality and losses; data of great value when trying to quantitatively address the incorporation of machinery. The fact that grape harvest in South America (and South Africa) be complementary in season compared to Europe, or North America, makes this potential market of Brazil an interesting option for European manufacturers. In this work, we have supervised a whole grape harvest season, in a 552ha farm, where both, mechanical (trailed) and manual harvest, are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Farm management system; Agricultural engineering; Viticulture in Brazil; Grape harvest; Case study.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4015

Engineering properties of luffa (L. cylindrica) seed relevant to the processing machineries
Provedor de dados: 111
Autores: Dauda, Solomon Musa; Aliyu, Mohammed; Balami, Ayuba Audu; Mohammed, Ibrahim Shaba; Abdulfatai, Yusuf.
Some physical and mechanical properties of Luffa (L. cylindrica) seeds were investigated at five different moisture content levels of 6%, 12%, 18%, 24% and 30%.  The physical properties which included geometric mean diameters (minor, major, intermediate), sphericity, weight, bulk density and coefficient of static friction were determined.  The mean values of the physical properties of the seeds were determined as major diameter 1.1423-1.2427 cm, width 0.54-0.6743 cm, thickness 0.8633-1.079 cm, geometric mean diameter 0.8102-0.9663 cm, sphericity 0.7104-0.7703, surface area 2.0620-2.9512 cm2, specific gravity 0.7600-1.0267, bulk density 0.3730-0.6053 g m-3, and porosity 0.5823-0.0430, respectively.  The physical properties of the seed showed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Luffa seeds; Moisture content; Physical properties; Mechanical properties.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4138

Sunflower’s seed separation in High-Intensity Electric Field
Provedor de dados: 111
Autores: fattahi, seyyed hossein.
Seed separation and cleaning is one of the important processes in obtaining pure high quality seed. The separation can be carried out by the properties of physical, electrical, magnetic, optical, etc. In this study, a high tension roll‐type electrostatic separator was constructed to separation of sunflower’s seed in order to extraction of pure seed and remove impurities. An extended corona discharge field was generated by three wire type electrodes in the roll-type separator. The experiment was performed in the form of factorial analysis based on a completely randomized design with three replications. The effects of the roll rotational speed, the electrode distance from the roll and the amount of power supply as effective factors in separation were...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4051

Mathematical modelling of the performance of an impact snake gourd (Trichosanthes cucumerina. L) seed sheller
Provedor de dados: 111
Autores: Idowu, David Oluwafemi; Owolarafe, Oseni Kehinde.
A mathematical model for the prediction of shelling efficiency of an impact snake gourd seed decorticator was presented using dimension analysis based on the Buckingham’s pi theorem.  Experimental verification of the models was conducted comparing the theoretical predictions with estimates from the representation of conventional methods.  A high coefficient of determination was found between the predicted and the experimental value (98.45% for effect of moisture content on decortication efficiency; 99.69% for effect of hammer diameter on decortications efficiency and 97.35% for effect of hammer speed on the decortications efficiency) showing that the model is appropriate.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post harvest dimension analysis; Model equation; Decortication efficiency; Moisture content; Hammer diameter; Hammer speed.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3573

AQUACULTURAL SYSTEM MANAGEMENT TOOL II: ANALYTICAL AND MANAGERIAL CAPABILITY
Provedor de dados: 111
Autores: Anyadike, Chinenye Chukwuemeka; Mbajiorgu, Constantine Crowner; Ajah, Genesis Nnaemeka.
One of the major objectives for developing ecosystem models is their application as tools of analysis for complex systems which otherwise would be difficult to analyze using conventional tools such as field experimentation and inventory monitoring. In view of this, the AQUASMAT model, which was developed based on existing ecosystem models theories and coded using the C-sharp language, was used to conduct a modeling study on a static concrete fish tank, to demonstrate its managerial and analytical capabilities. The input variables for model execution were site specific parameters, fish/feed parameters, water quality parameters and management options from selected fish farm in Nigeria. The model simulation was for concrete tanks with surface area of 1 m2 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil; Water Resources and Aquacultural Engineering AQUASMAT; Simulation; Analytical; Managerial; Capability; Water quality; Inter-relationships.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4308

Development of ornamental seedlings and cuttings for hydroponics using different substrate
Provedor de dados: 111
Autores: Fadel, Moustafa Amin.
This research paper focuses on investigating the effect of using various substrate materials on the development of seedlings for ornamental plants.  Bermuda grass (Cynodon dactylon), Petunia (Compacta Enana Rosa) and Epipremnum aureum, Bermuda; Petunia and Epipremnum aureum were cultivated in different substrates.  Synthetic sponge (Polyurethane sponge), Rockwool and sterilized cotton were used as the substrate materials in each case where an experimental water-circulating apparatus was designed and installed to execute the test. Results showed that after 15 days, Bermuda grass in Rockwool reached a germination rate of 70% while it did not exceed 50% in sponge or in medically treated cotton.  The highest germination rate after 20 days for Petunia was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydroponics hydroponics; Germination; Seedlings; Cuttings.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3851

Chemical Oxygen Demand removal rate comparative analysis using three different biogas digesters
Provedor de dados: 111
Autores: Nwaigwe, Kevin Nnanye; Ononogbo, Chibuike; Anyanwu, Emmanuel E; Enweremadu, Christopher C.
The Chemical Oxygen Demand (COD) end value of effluent discharged from a bioreactor into the environment is a critical indicator of its capacity to pollute the environment. A comparative parametric analysis of COD removal rate using three different biogas digesters is presented.  The three bioreactors are Upflow Anaerobic Sludge Blanket (UASB), Upflow Bioreactor with Central Substrate Dispenser (UBCSD), and Continuous Stirred-Tank Reactor (CSTR). In order to select the most fitting bioreactor type among the three considered, experimentation was carried out using organic municipal waste (OMW) as substrate. A 10-day hydraulic retention time (HRT) was used, while cattle rumen microbes were used to improve digestion rate. UBCSD showed the highest level of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Renewable Energy and Environmental Engineering Chemical Oxygen Demand; Biogas digesters; Parametric analysis; Hydraulic retention time.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4117

Effect of moisture content on engineering properties of sorghum grains
Provedor de dados: 111
Autores: Gely, Maria Cristina; Pagano, Ana María.
Moisture constitutes one of the most influential factors in the conservation of sorghum grains during storage due to their relationship with the biological factors that cause postharvest damage, affecting the nutritional and economic values. For this reason it is important to evaluate the effect of moisture content on the physical characteristics of the grain in order to establish the design and operation conditions of the post-harvest processes. Accordingly, the aim of this work is to analyze the dependence on moisture content of physical properties of technological interest for the post-harvest grain sorghum stages.Experimental results show that the moisture significantly affects the properties width, thickness, geometric mean diameter, sphericity, bulk...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post Harvest Grain sorghum  Physical properties; Moisture content; Models.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4145

A comparative study on drying of basil leaves
Provedor de dados: 111
Autores: Parmar, Mansukhlal Ramjibhai; Kumpavat, Mahendrasinh T.; Doshi, Jayesh Sevantilal; Kapdi, Shyamsundar S.
Basil is a popular aromatic and annual herb growing in many regions of the world.  Immediately after its harvesting, the highly perishable raw material, i.e. leaves, have to be preserved against deterioration and spoilage.  More often, during peak period, most of the crop is lost/wasted due to lack of proper post-harvest processing techniques.  Drying is by far the most widely used treatment, which needs to be performed very carefully and preciously so as to preserve the aroma and color of the leaves.  Various drying treatments and experimental methods viz., solar drying, tray drying, vacuum drying and fluidized bed drying were carried out at the temperatures of45°C,55°Cand65°Cto find and suggest the optimum drying condition for acquiring quality dried...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Post Harvest Process and Food Engineering drying; Drying characteristics; Basil leaves; Solar drying; Tray drying; Vacuum drying and fluidized bed drying.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3867

Energy and Exergy Analyses during Eggplant Drying in a Fluidized Bed Dryer
Provedor de dados: 111
Autores: Azadbakht, Mohsen; Ziaratban, Armin; Vahedi Torshizi, Mohammad; Aghili, Hajar.
In this research, energy and exergy loss were analyzed in the laboratory for the drying of eggplant using a fluidized bed dryer. The drying experiment was conducted at inlet temperatures of 40, 50, and 60  and air velocities of 3, 5, and 7 m/s using samples with diameters of 5, 10, and 13 mm and a height of 1 cm. The effects of temperature, velocity of drying air, and sample size on energy consumption and exergy losses were investigated. The results showed that the minimum energy consumption and exergy losses occurred at a diameter of 13 mm, velocity of 3 m/s, and temperature of 40. Meanwhile, the maximum energy consumption and exergy losses occurred at diameter of 5 mm, velocity of 7 m/s and temperature of 60;. Generally, the results demonstrated that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy utilization; Exergy losses; Eggplant; Fluidized bed dryer; Temperature; Air velocity.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4116

Development and Performance Evaluation of a Battery Operated Small- Scale Reaper
Provedor de dados: 111
Autores: Kiran, Imrul Kaes Mirza.
Abstract: In absence of appropriate mechanization, harvesting of both rice and wheat crop is a major production problem in Bangladesh. Acute labor shortages at harvest time cause delays in clearing fields leading to high grain and straw losses. This work is to help small-scale farmers to meet their technological support, by developing a battery operated reaper to harvest rice and wheat crops more efficiently. The research work is on ease of harvesting operation to the small land holders for harvesting rice and wheat crops in less time and at low cost by considering different factors as power requirement, cost of equipment, ease of operation, field condition, and time of operation. The performance was evaluated considering the technical parameters: cutting...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3856

Manufacturing of agricultural machinery in Bangladesh: opportunities and constraints
Provedor de dados: 111
Autores: Alam, M. Monjurul; khan, M. I. N.; Saha, Chayan Kumer; Rahman, Anisur; Bhuyian, M. G. K.
Despite numerous limitations, agricultural machinery (AM) manufacturing sub-sector inBangladeshis growing quite satisfactorily and has potential to make substantial contribution to much needed non-farm economic growth, employment generation, mechanization of on and off-farm agricultural activities, and as a whole orientation in the national development.  This study made an attempt to take account of AM manufacturers, importers, traders/wholesalers and retailers, their associations, assess market potential and identify serious bottlenecks associated with this sub-sector.  Stratified random sampling technique was used for identifying respondents in quantitative survey, while focus group discussions (FGDs) and Key Informant Interviews (KIIs) were conducted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural machinery; Spare parts; Manufacturing; Supply chain; Marketing; Import vs local quality; Constraints.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3682

ANN Application for Prediction of Diesel Engine Heat with Nano-Additives on Diesel-Biodiesel Blends
Provedor de dados: 111
Autores: Hosseini, Seyyed Hassan; Taghizadeh Alisaraei, Ahmad; Ghobadian, Barat; Abbaszadeh-Mayvan, Ahmad.
     Biodiesel is renewable clean bioenergy as it can be produced from vegetable oils, animal fats and micro-algal oil and also it can be applied instead of diesel fuel without any special modifications to the engines. In recent years, Nano-catalysts or Nano-additives in fuels improve the thermo-physical properties of fuels. In this study, the Carbon Nanotubes (CNT) as additive were mixed with the B5 and B10 fuel blends to evaluate the cylinder head and cylinder block temperature of a CI single-cylinder engine with an artificial neural network. carbon Nanotubes with concentrations of 30, 60, and 90 ppm were used for each fuel blends. Assessed characteristics were cylinder head and cylinder block temperature for full load engine at three speeds of 1800,...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4048

Evaluation of the performance and emissions of a single cylinder diesel engine fueled by biodiesel and using EGR
Provedor de dados: 111
Autores: Jaliliantabar, Farzad.
In this study, the effect of using biodiesel – derived from waste cooking oil – and exhaust gas recirculation (EGR) on engine performance and emissions of a single cylinder 4-stroke engine has been investigated. Three engine speeds (1800, 2100 and 2400 rpm), three engine loads (25, 50 and 75 %), four biodiesel/diesel blend (B0, B5, B10 and B15) and four EGR rates (0, 10, 20 and 30 %) have been applied to the engine. The considered emissions of the engine, measured at exhaust, were , CO, CO2, HC and smoke. The considered performance parameters were engine power, exhaust gas temperature and brake specific fuel consumption. The results of the study show that the addition of the biodiesel to the diesel fuel increases emission of the engine. The highest...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3997

A mathematical model for predicting the drying rate of cocoa bean (Theobroma cacao L.) in a hot air dryer using dimensional analysis
Provedor de dados: 111
Autores: Nwakuba, Nnaemeka Reginald.
Development of a mathematical model for predicting the drying rate of a thin layer cocoa bean in a convective hot air dryer using dimensional analysis based on the Buckingham’s π theorem is presented. Results obtained show that drying rate decreases as the moisture level reduces due to increase in the intra-particle resistance to internal moisture migration of the cocoa beans. High coefficients of determination of 94.7%, 94.7% and 99.5% at temperatures of 60, 70 and 80oC respectively between the predicted and experimental values showed that the method is good. The model was validated with data obtained from an existing thin layer convective dryer and there was no significant difference between the experimental drying rate and the predicted values at 5%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agric. Engineering; Crop Processing engineering cocoa bean; Thin layer drying; Dimensional analysis; Drying rate; Prediction equation.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4107

Assessment of dynamic linear and non-linear models on rainfall variations predicting of Iran
Provedor de dados: 111
Autores: javari, majid.
The main research aims to detecting the linear and nonlinear variability modeling in analyzing the variability patterns of rainfall series. For rainfall linear and nonlinear variability modeling, the ARIMA models and ARCH family models has been used for predicting the monthly and annual rainfall series extracted from IRIMO during 1975-2014 within 140 stations in Iran. Several ARIMA and ARCH (six models) models have been used and their validity has been confirmed by evaluating different accuracy indicators, using the hybrid model for the variability modeling. The analysis of ARIMA and GARCH selective models indicates existence of random and non-random in the rainfall time series. The combination model of (1, 0, 0) and GARCH (1, 1) is applied for the...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4193

Retrofitting multi-span dairy buildings to improve indoor environment
Provedor de dados: 111
Autores: Abdelbary, Khaled M.
Several dairy farms still have old multi-span barns which are encountering several problems in summer and they are: low ventilation rates, non-uniformed air distribution, heat stress and high indoor concentrations of harmful gases. A solution has been suggested, in this study, which is refurbishing the roofs of old multi-span dairy barns by modifying the roof design, increasing the cowshed height and the roof slope angle. In order to implement this new roof design, rigorous experimental measurements and theoretical calculations were carried out to evaluate the indoor environment before and after refurbishment which was determined by measuring and estimating the following parameters: air exchange rate, indoor temperature, gaseous concentrations (NH3, CH4,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering  Farm Buildings dairy buildings; Roof refurbishment; Natural ventilation; Indoor environment; Air quality; Gaseous emissions.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4228

Development of an improved modified Fitch apparatus for application in technologically less developed countries
Provedor de dados: 111
Autores: nwakaire, joel; Ezeoha, Louis; Ugwuishiwu, Boniface.
This study was conducted to assist in reducing post harvest losses in Africa and contributing to increased technology availability for agro-material testing. Principles considered in design of thermal conductivity probe include the heat transfer methods like conduction and convection. Fitch apparatus was reviewed and found to be deficient on heat transfer through convection and radiation. A modified Fitch apparatus was constructed and tested. It was designed based on radiative-convective-conductive heat transfer using non steady state heat transfer through non-line heat sources. The major components include an electric bulb, the casing, a digital thermometer and a sample hanger. The standard temperature of the system was kept at 81.50C for testing of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural and Bioresources Engineering; Processing and storage Drying; Fitch apparatus; Heat transfer; Moisture content; Thermal conductivity.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3929

Analytical development of bird pecking force equation for a self-metering poultry feeder
Provedor de dados: 111
Autores: Asoegwu, Sabbas N; Obasi, A. U.; Ohanyere, S. O.; Nwakuba, N. R.
The concept of a self-metering poultry feeder was developed.  The theoretical analysis of the forces involved in its operation was done and a generalized pecking force model was developed.  Mathematical expressions, logical assumptions, graphical relations and models as well as statistical analyses were adopted in the pecking force analysis. This pecking force relates to some design parameters like feed flow rate, hopper aperture, etc. The generalized equation was tested using a fabricated model of the equipment.  Experimental results show that the equation can be used to predict the performance of the machine reasonably and also the level of satiety and bird vigor determine the amount of pecking force which was described by a polynomial regression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agric. and Bioresources Engineering/ Crop processing and Postharvest Engineering Pecking force; Self-metering; Poultry feeder; Feed rate; Pecking time.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4125

Last generation instrument for agriculture multispectral data collection
Provedor de dados: 111
Autores: Marinello, Francesco.
In recent years, the acquisition and analysis of multispectral data are gaining a growing interest and importance in agriculture.  On the other hand, new technologies are opening up for the possibility of developing and implementing sensors with relatively small size and featuring high technical performances.  Thanks to low weights and high signal to noise ratios, such sensors can be transported by different types of means (terrestrial as well as aerial vehicles), giving new opportunities for assessment and monitoring of several crops at different growing stages or health conditions.  The choice and specialization of individual bands, within the electromagnetic spectrum ranging from the ultraviolet to the infrared, plays a fundamental role in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Precision agriculture; Sensors wavelengths  vegetation indices  multiband imaging  synchronized  measurement.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3939

Potential for Use of Pineapple Waste to Enhance Soil Fertility on Smallholder Organic Farming in Kayunga District, Uganda
Provedor de dados: 111
Autores: ZZIWA, AHAMADA; Kambugu, Robert; Komakech, Allan John; Kiggundu, Nicholas; Miito, Gilbert; Kyazze, Florence.
Soil exhaustion and nutrient depletion are major constraints to pineapple farming in Uganda. This study explored potential for using on-farm waste from pineapple farming to conserve soil fertility and enhance agricultural productivity. Data collection was done using key informant interviews, focus group discussions, and a semi structured survey questionnaire administered to 109 randomly selected pineapple farmers and processors. The data was analysed in SPSS to generate descriptive statistics for selected variables followed by cross tabulation to explore linkages between the variables. Results indicate that farmers engaged in pineapple farming, have diverse socioeconomic backgrounds but activities engaged in are not significantly associated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil water engineering Pineapple Waste; Nutrient Depletion; Vermicompost; Manure; Vermicompost.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4055

Influence of production and conservation conditions on some physical and chemical properties of blueberries
Provedor de dados: 111
Autores: Gonçalves, Christophe; Guiné, Raquel P.F.; Gonçalves, Fernando; Costa, Daniela.
This work studied the effect of production mode (organic versus conventional) and storage conditions on some physical and chemical properties of blueberry from different cultivars, namely Duke, Bluecrop, and Ozarkblue. The physical properties evaluated were caliber, color and texture and the chemical characteristics analyzed were moisture content, total soluble solids and acidity. Furthermore, the effect of storage on these properties was also evaluated.The results showed that blueberries cv. Duke were bigger, with a more intense coloration, and presented a harder and more elastic texture, when compared with the other cultivars at study. With respect to production mode it was found that the blueberries produced in organic farming were not so acid or sweet,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Postharvest conservation  food processing; Food analysis Blueberry; Conservation; Color; Organic farming; Texture.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4115

Effects of magnetized water on the vegetative growth and yield of tomato
Provedor de dados: 111
Autores: Yusuf, Kamorudeen Olaniyi.
This study was conducted to determine the effect of magnetized water on the vegetative growth and yield of tomato.  The values of magnetic flux densities used for treating the irrigation water varied from 124 to 719 G (T2 to T10) were produced from electromagnet and T1 was the control experiment which was not treated with magnetic field.  The water after passing through (treated with) magnetic field (T2 to T10) was called magnetized water while the control experiment (T1) was called non-magnetized water.  The experimental layout for the study was a 10 by 10 Latin Square Design.  The tomato (variety UC82B) was planted in 100 buckets in a transparent garden shed for 130 d and irrigated with magnetized and non-magnetized water, respectively.  The heights of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering and Soil and Water Option magnetized water; Tomato yield; Vegetative growth; Irrigation; Electromagnet; Magnetic field.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3258

Alternative biomass furnace wall material from biomass furnace ash
Provedor de dados: 111
Autores: Flores, Edgar Dulay.
Biomass furnace ash (BFA) generated from drying of grains in mechanical dryers were blended with cement in varying ratio of 1:4, 1:5, 1:6, 1:7 and 1:8 by volume.  Each composition was cured in an ambient condition for 7, 14 and    28 days and determined their properties such as density, porosity, compressive strength and thermal shock resistance.  Cold crushing strength increased with increasing cement content and curing time.  Likewise, density increased with increasing cement content and curing time while porosity showed the other way.  All the sample compositions exceeded 30 cycles without any crack when subjected to thermal shock resistant cycles of heating and cooling using a firing temperature of 1000oC in an electric muffle furnace.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass; Rice husk; Ash; Furnace; Mechanical dryer.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3944

Sustainability evaluation of agricultural greenhouse structures in southern of Algeria using AHP, case of study: Biskra province
Provedor de dados: 111
Autores: Bencheikh, Abdelaali; Nourani, Ahmed; Chabaca, Mohamed Nacer.
The protected cultivation of vegetables has considerably developed in southern ofAlgeria.  However, the sustainability of this system has not been evaluated.  The aim of this study is to find a greenhouse structure (Tunnel or Canarian) that promotes the agriculture sustainability in Biskra province using analytic hierarchy process (AHP).  In that event, a survey was conducted in this region where nine criteria were selected according to the local conditions.  The results obtained revealed that the farmer and the agricultural specialists shared the same vision regarding the weight of economic indicators with 74% and 66%, respectively.  The AHP analysis provided that the Canarian greenhouse (CG) presented the ideal structure.  This work might also help the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural greenhouse; Sustainability; AHP; Canarian greenhouse; Tunnel greenhouse.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4114

Fuzzy logic approach in prioritization of crop growing parameters in protected farms: a case in North East India
Provedor de dados: 111
Autores: Sarkar, Amaresh; Majumder, Mrinmoy.
 Global food demand is rising exponentially as the population is increasing.  Protected farming is becoming increasingly popular among the farming communities for fast growing vine crops round the year.  Consideration of crop growing parameters while designing and maintaining a protected farm is very important for optimal crop growth and profit.  Many farmers does not consider all the crop growing parameters and does not know the importance of all factors in the optimal crop growth.  In this paper, an attempt has been made to prioritize 12 crops growing parameters using fuzzy approach.  12 crop growing parameters were selected from the literature and scored by four different evaluation methods viz., food consumer importance, expert’s importance, farmer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering - Protected Cultivation greenhouse; Crop factors; Optimum crop yield; Multi-criteria decision-making (MCDM).
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3782

Effect of spade angle and spading frequency of spading machine on specific soil resistance and pulverization
Provedor de dados: 111
Autores: Dogra, Ritu.
The effect of spade angle and spading frequency on various dependent variables, i.e. specific soil resistance encountered, energy consumed per unit volume of soil moved, weighted mean clod size, soil bulk density, soil cone index and cone index ratio were studied.  The experiments were conducted in soil having 15.7% clay, 53.6% silt, and 30.7% sand.  During experimentation, moisture content of soil was maintained between 13% and 14%.  The spade angles used were A1 (0°), A2 (15°) and A3 (30°).  Four levels of bite lengths viz. 4, 6, 8 and 10 cmat travel speed of 18.47 cms-1 were selected for the study.  These corresponded to four levels of spading frequencies namely F1 (1.85 cycles s-1), F2 (2.31 cycles s-1), F3 (3.08 cycles s-1) and F4 (4.62 cycles s-1). ...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Farm Machinery and power Engineering spading machine; Spade angle; Spading frequency; Degree of pulverization.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3580

Modelling mass transfer during water absorption of  closed mouth pistachios
Provedor de dados: 111
Autores: Kouchakzadeh, Ahmad; Tajri, Behnam.
This study was undertaken to analyze the kinetics of water absorption and to derive an equation for the rate at which water is absorbed by closed mouth pistachios.  We used Kaleh_ghoochi, the major variety of Iranian pistachios.  The water-absorption rate equation of closed mouth pistachios between 5°Cand 25°Cwas presumed based on the Peleg equation.  The Peleg coefficients k1 and k2 were negligible changed with water temperature depending on the product and can be useful in estimating approximate immersing time and temperature for splitting mouth of pistachios.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pistachios; Water absorption; Peleg equation; Modelling.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3907

Potential application of chitosan-clay coating on some quality properties of agricultural product during storage
Provedor de dados: 111
Autores: Taghinezhad, Ebrahim; Ebadollahi, Asgar.
Lemon is cultivated in many countries including of Iran as one of the most important citrus fruit. Because of the split skin and very juicy properties, the quality of lemon fruits has been affected by some environmental factors during storage. In the present study, the efficiency of chitosan-clay nano-composite coating on some quality propertiesof lemon was investigated during cold storage. Nano-structural feature of prepared chitosan-clay was approved by X-ray diffraction (XRD). The chemical and mechanical properties of coated and uncoated fruit samples including of Total Soluble Solid (TSS),Titratable Acid (TA), and firmness, shear and punch forces were measured after 0 to 63 days cold storage. Coated samples showed significantly the lowest value of TSS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chitosan-clay; Chemical properties; Mechanical properties; Nano-composite; Lemon fruit.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4141

Non-newtonian flow modelling based design of plate heat exchangers
Provedor de dados: 111
Autores: Joshi, Abhishek R.; Datta, Ashis Kumar.
Plate heat exchangers (PHEs) are widely used in food industries for processing liquid products, because of their high thermal effectiveness, ease of maintenance and cleaning, high heat exchange rate and demand of relatively small floor area.  As many food products are non-Newtonian fluids, particularly pseudoplastic in nature, it is important to study nature of their flow and heat transfer characteristic in PHEs.  Aqueous solutions of carboxymethylcellulose (CMC) at different weight concentrations (0.2%, 0.4% and 0.6%) and 25 ≤ NRe,gen ≤ 250 and at different inlet temperatures (50°C, 60°C and 70°C) were considered as operating conditions.  Using data obtained, relations between dimensionless numbers (NNu, NPr and NRe,gen) were established.  Pressure drop...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post Harvest Processing; Food Engineering non-Newtonian fluids  heat transfer  plate heat exchanger  flow simulation.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3900

Drying and quality features of selected maize varieties dried in commercial processing complexes
Provedor de dados: 111
Autores: Jony, Akhtaruzzaman.
The drying status and quality aspects in terms of physical, nutritional, functional properties and microbial status of three common maize varieties (900M gold, Pioneer 92 and Kavri) dried in different drying complexes in Dinajpur district of Bangladesh are presented in this paper. Total drying varied from18-20 h for drying of freshly harvested maize varieties in the complexes where sun drying method was used. The overall calculation reveled that drying cost in different mills ranged from US$12.12 to US$14.75 per ton of fresh maize (@1US$ equals Tk.80).  The dimensions of the maize varieties as length, width and thickness were found to be ranged from 12.62±0.34 to 14.54±0.32, 10.60±0.35 to 10.24±0.21, 6.38±0.28 to 6.74±0.28 mm, respectively. The 900M gold...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food Engineering and Technology Maize drying; Drying cost; Physical properties; Nutritional quality; Moisture content; Microbial load.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3984

Determination of dynamic friction coefficient in common wheat varieties on different contact surfaces
Provedor de dados: 111
Autores: Askari Asli-Ardeh, Ezzatollah.
Dynamic friction coefficients of agricultural crops are applied in designing silos, agricultural crops storage structures, transporting, handling machines and discharging implements.  In this study, at first an apparatus for measuring dynamic friction force was developed, then the dynamic friction coefficient of common wheat varieties at five levels (Azar2, Rasad, Sardari, Zagros, Sabalan) were investigated on contact surface at four levels (black, galvanized, mild and aluminum sheets), with sample slipping speed at three levels (5, 10 and 15 cm s-1) and grain moisture content at three levels (12%, 14% and   18% w. b.).  The data were analyzed probability.  The obtained results revealed that the main effects of all independent factors as well as the double...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wheat grain; Contact surface; Moisture content; Dynamic friction coefficient.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3806

Effect of microwave energy on dehydration of celery leaves
Provedor de dados: 111
Autores: Kouchakzadeh, Ahmad; Shabani, Neda.
Celery leaves were dried in a microwave oven to determine the effects of microwave output power on drying rate, specific energy consumption, drying efficiency, leaves surface area and the color of dried product.  Five different microwave output powers ranging from 180 to 900 W were used in the drying experiments.  As the drying progressed, the loss of moisture caused a decrease in absorbing microwave power and resulted in a fall in the drying rate.  Rising microwave power could reduce the rate of energy efficiency from 45.0% to 11.4% and growth of specific energy consumption from 5.3 to 18.7 MJ kg-1 water.  Significant differences (p&lt;0.01) were observed between the color’s variables of leaf in five microwave powers, but changing of color in microwave...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Celery leaves; Microwave heating; Drying rates; Specific energy consumption  color assessment.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3607

Effect of Ethanol Vapor on Ripening of Tomato
Provedor de dados: 111
Autores: Roy, Joyanta Kumar.
Freshly harvested tomatoes were subjected to different ethanol vapor treatments at 4 ml/kg, 6 ml/kg and 8 ml/kg in closed bucket for 6 hr, 9 hr and 12 hr at ambient temperature (26.84±3.0ºC) to investigate the effect of ethanol vapor on physico-chemical changes in summer variety tomato over storage period. Results revealed that ethanol vapor treatments significantly prolonged the postharvest life of tomato by inhibiting ripening process. At the end of storage period, T6 treatment (6 ml/kg of ethanol for 12 hr) was found to be effective to maintain weight, firmness and attractive color attributes of tomatoes. On the other hand, bioactive compounds, such as lycopene (4.65 mg/100g), β-Carotene (2.91 mg/100g) and ascorbic acid (27.5 mg/100g) were found to be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Department of Food Science and Nutrition; Hajee Mohammad Danesh Science and Technology University; Dinajpur; Bangladesh. Department of Food Processing and Preservation; Hajee Mohammad Danesh Science and Technology University; Dinajpur; Bangladesh. Ethanol vapor; Tomato; Physico-chemical; Postharvest quality; Ripening.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3902

Physical, chemical and sensorial properties of kiwi as influenced by drying conditions
Provedor de dados: 111
Autores: Correia, Paula; Guiné, Raquel P.F.; Correia, Ana Cristina; Gonçalves, Fernando; Brito, Mariana; Ribeiro, Jéssica.
The present study aimed at studying the effect of convective air drying in some physical, chemical and sensorial properties of kiwi samples. For that the kiwis were dried in thin layer in convective chambers set to constant temperatures of 50, 60, 70 and 80 ºC. The fresh as well as the dried samples were analysed for moisture, water activity, vitamin C, total phenolic compounds, antioxidant activity, colour and texture. Also the different dried samples were subjected to a sensorial analysis.It was concluded drying of kiwi importantly decreased the contents in some bioactive components like vitamin C and phenolic compounds as well as the antioxidant activity. Moreover, the negative impact was higher for higher drying temperatures. Drying also altered the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food industry; Food properties; Food engineering Antioxidant activity  colour  drying  phenolic compounds  sensorial analysis  texture  vitamin C.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4126

Factors affecting farmers’ satisfactions with mechanized rice harvesting in Malaysian paddy fields: A case study of hiring custom operators
Provedor de dados: 111
Autores: El Pebrian, Darius.
Shortage of labor during the harvest season is one of the problematic situations for farmers in the Malaysian paddy fields.  Thus, combine harvester has been utilized massively in Malaysian paddy field for the purpose of assisting the farmers to overcome the problems.  Majority use of combine harvesters in the country was provided by the state farmers’ organization that offers custom operators to be hired by the farmers during harvesting seasons.  A case study was conducted to identify and rank the factors that affect farmers’ current satisfactions with mechanized harvesting using combine harvesters that offered by custom operators.  A group of farmers comprising of 336 respondents at rice granaries in Tanjung Karang district, Selangor, Malaysiawas chosen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice; Combine harvester; Farmers’ satisfaction; Mechanization; Custom operator.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4016

Reductions in turbidity and Escherichia coli density using passive polymer treatment
Provedor de dados: 111
Autores: Berry, James; Sawyer, Calvin; Privette, Charles; Hayes, John; Bridges, William.
Current research shows sediment basins may act as reservoirs for potentially harmful bacteria, including Escherichia coli (E. coli). E. coli preferentially attach to clay-sized particles and have been found in sediment basin outflows with high turbidity levels containing concentrations exceeding water quality standards recommended by the US Environmental Protection Agency. Since research shows E. coli preferentially attach to the clay fraction within sediment, it was hypothesized that a reduction in turbidity and TSS would create a corresponding reduction in bacterial density.  Construction site sediment basin discharge was simulated to determine whether a sediment tube configuration using anionic polymer application could reduce E. coli densities. Based...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ag engineering; Biosystems engineering; Civil engineering E. coli; Sediment; Stormwater; Sediment basin; Construction; Runoff.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3967

Flow Behaviour and gelatinization kinetics of Brachystegia eurycoma flour and starch dispersions
Provedor de dados: 111
Autores: Ikegwu, Onyekachi John.
Brachystegia eurycoma flour (5%) and starch (2.6%) dispersions heated for 2,5,10,15,30 and 44 min at 75,80,85 and 90oC were characterized by pseudoplastic behaviour (0.203
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flow behaviour; Gelatinization kinetics; Activation energy; Brachystegia eurycoma.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3133

Effects of a near infrared-reflecting greenhouse roof cover on the microclimate and production of tomato in the tropics
Provedor de dados: 111
Autores: Mutwiwa, Urbanus Ndungwa; Tantau, Hans Jurgen; Elsner, Bukhard von; Max, Johannes F. J.
The effects of a shading paint containing NIR-reflecting pigments applied to the roof of an experimental greenhouse on greenhouse microclimate, plant response of a tomato crop and fruit yield and quality were studied under the tropical climate conditions of Central Thailand. One experiment was carried out in the rainy (2006) season and in the dry (2005/2006) season.The maximal reduction of the air temperatures inside the greenhouse with the NIR reflecting roof paint was observed during the dry season. At this time the temperature in this house was 2.8 °C lower than in the control greenhouse without shading paint. On average the temperature reduction was 2 °C in the dry and 0.6 °C in the rainy season. The magnitude of the temperature reduction was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protected cultivation Shading; Heat stress; Greenhouse cooling; Plant response.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3956

Energy Requirements in the Processing of Cocoa Beans into Powder
Provedor de dados: 111
Autores: Ogunsina, Babatunde Sunday.
This paper aims to analyse the direct energy utilization in the processing of cocoa beans into powder using energy from the national grid and diesel engine in some cocoa processing factories located in South-western Nigeria. Energy consumption in the processing of cocoa beans into powder was evaluated for the eight major unit operations that cocoa processing entails, namely: cleaning, roasting, winnowing, milling, alkalizing, pressing, butter packing and grinding/sieving. The data obtained were imputed into existing energy equation to estimate the energy requirement for each of the eight unit operations. The results show that total energy expenditure in the processing of raw cocoa bean into powder were 1.815 and 2.384 MJ/Kg using national grid (PHCN) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cocoa beans; Cocoa powder; Energy consumption.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3949

An Agriculture Robot (AGRIBOT) for Harvesting Underground Plants (RHIZOMES)
Provedor de dados: 111
Autores: K.P., Sampoornam.
Agriculture plays a vital role in socio-economic development of India. Agriculture is the cultivation of   plants for food, fiber, biofuel, medicinals and other products used to sustain and enhance human life. Agriculture is the most essential and foremost economic activity of all times. Until the Industrial Revolution, the vast majority of the human population labored in agriculture. Pre-industrial agriculture was typically subsistence agriculture/self-sufficiency in which farmers raised most of their crops for their own consumption instead of cash crops for trade. But now, agriculture is undergoing a structural change leading to a crisis situation. The rate of growth of agricultural output is gradually declining in the recent years due to labor scarcity...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3764

Development of deficit irrigation for maize crop under drip irrigation in samaru-nigeria
Provedor de dados: 111
Autores: Ezekiel, Oiganji.
In the past, outcome of any water management strategy could only be known after field experiment, in recent times, means of evaluating the implications of irrigation schedules without field experiment is fast gaining grounds with the use of models.  This research work present a scenarios studies for different developed irrigation scheduling options for a drip irrigated maize crop at the Institute for Agricultural Research (IAR) irrigation farm Samaru-Nigeria during 2013 and 2014 cropping season using a computer-based model.  Aqua Crop was calibrated and validated with data obtained from the field, it was further used to generate scenario of different irrigation scheduling outcome. Grain and biomass yields, harvest index, seasonal evapotranspiration and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering/ soil and water conservation engineering Aqua Crop model; Calibration; Validation; Irrigation schedulling; Water productivity.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3752

Integrated approach for prediction of centrifugal fertilizer spread patterns
Provedor de dados: 111
Autores: Marinello, Francesco; Pezzuolo, Andrea; Gasparini, Franco; Sartori, Luigi.
The present paper proposes a numerical approach for prediction of behavior of those fertilizers spreaders based on centrifugal disc functioning. In particular results from finite element multi-body simulations provided by commercial software are used in order to define boundary conditions of field tests carried out concurrently. Results are then integrated into a mathematical model to rapidly generate distribution charts and distribution diagrams.Such integrated approach can be implemented to effectively calibrate a theoretical model which provide simulations on different machine settings conditions: as a final point simulations allow fast testing of different distribution conditions, helping definition of those which minimize the variability of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Simulation; Fertilizer; Spreader; Distribution.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4177

Performance evaluation of PV ventilated hybrid greenhouse dryer under no load condition
Provedor de dados: 111
Autores: Madhava, Mondru; kumar, Sivala; Bhaskara rao, D; D D, Smith.
The PV ventilated hybrid greenhouse dryer was designed and fabricated for drying of food grains. The greenhouse dryer with 446.7 X 213.4 cm size and with central height of 259 cm was constructed using 50.8X25.4 mm MS pipe, 19X30.2 mm MS angles. Clear twin wall polycarbonate sheet with 6 mm thick was used insulate the greenhouse dryer structure. Performance evaluation was conducted under no load test condition. It was observed that, the average temperature inside the dryer was 7.6-13.40C and 6.3-13.20C (22-43%) higher and average relative humidity was 26-47% and 23-40% lower than ambient temperature and relative humidity during May and December months respectively. Exhaust air flow rate varied in the range of 38.93-81.95 m3/min and 28-63 m3/min during May...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agro energy; Agricultural process engineering Greenhouse dryer; Photovoltaic; Forced ventilation; Performance evaluation.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4146

Design, development and evaluation of a kenaf seed metering system based on its physical and aerodynamic properties
Provedor de dados: 111
Autores: Bakhtiari, Mohammad Reza.
In this study a vacuum seed metering system was designed and developed based on physical and aerodynamic properties of kenaf seed (Hibiscus cannabinus L.). The kenaf vacuum seed metering system was evaluated in the laboratory using kenaf seeds. For laboratory tests, a completely randomized design (CRD) with three replications was chosen. The data were analyzed by SAS program version 9.1 and means separation test were done using Duncan’s multiple range test (DMRT). Based on this study, the most suitable opening diameter and opening angle for planting kenaf seed are 2.5 mm and 120o respectively with having the minimum miss and multiple indices with having optimum quality of feed index.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Assistant Professor  Agricultural Engineering Research Department  Hamedan Agricultural and Natural Resources Research and Education Center  AREEO  Hamedan  Iran; M.bakhtiari@areeo.ac.ir Kenaf  physical and aerodynamic properties  design and development  seed metering system.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4172

BIOLOGICAL RESPONSEVINESS OF BEANS UNDER DIFFERENT SOIL WATER REGIMES AT PROTECTED ENVIRONMENT CONDITIONS IN SOUTHERN BRAZIL
Provedor de dados: 111
Autores: Domingues, Rafael; Pereira, André Belmont; Schiebelbein, Luis Miguel; Rosa, Jadir Aparecido; Barbosa, Eduardo Augusto Agnellos; Pires, Luiz Fernando.
Climatic conditions and soil water requirement notably impinge upon agriculture in such a way as to galvanize scientists to come up with advanced research in order to assure a more sustainable production at a given site. Under protected environmental conditions water is the main factor to be controlled aiming at maximization of yield and grade of agricultural products. The productive potential of a crop is extremely conditioned by the local atmospheric conditions along with requirements for water and nutrients in the soil. The aim of the current work was to scrutinize the effect of soil water status on the ecophysiological parameters and yield components of two cultivars of beans (Phaseolus vulgaris L.) under tropical climatic conditions. The experiment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land and Water Engineering Phaseolus vulgaris L.; Soil water; Climate; Yield components; Ecophysiological parameters.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4242

Design, implementation and tuning of an irrigation canal system SCADA
Provedor de dados: 111
Autores: Rijo, Manuel.
Abstract: The paper presents the design, implementation and field tuning of the SCADA system of a Portuguese irrigation canal network upstream controlled with AMIL radial gates and equipped with other Neyrpic devices. In addition of the irrigation district and its hydraulic main system, the paper also presents SCADA architecture, including two synoptics, and their remote terminal units (monitoring and control and monitoring units). The SCADA manual controllers – direct, gate position and gate flow controllers - are defined for the main canals and main distributors intakes, in order to permit a pre-defined flow value or a daily flow schedule achievement. SCADA also monitors outflows from the main canals and main distributors - the most important canal top...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydraulics; Irrigation canals; Irrigation canal modernization; SCADA systems Canal control; Flow controller; Flow equations; Irrigation canal; Local upstream control; SCADA system.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4018

ASSESMENT OF PALM KERNEL SHELL AS A COMPOSITE AGGREGATE IN CONCRETE
Provedor de dados: 111
Autores: Oti, Okechukwu Peter; Nwaigwe, Kevin Nnanye; Okereke, Ngozi A. A.
This  manuscript  presents  a report on  the  physical properties of palm kernel shell used  here  as a coarse aggregate  and  their  effect  on the strength properties of palm kernel shell concrete.Laboratory research was carried out to observe the effects of replacing crushed granite with palm kernel shell on the compressive strength and density of palm kernel shell concrete. Mix design of 1:2:4 and a water-cement ratio of 0.6 were used to produce concrete specimen cubes of size 150mm3.A total of 60 cubes were made and wholly submerged in water to cure for 28days at intervals of 7days i.e. 7, 14, 21 and 28 days after which their densities and compressive strengths were determined. Granite was replaced with palm kernel shell in the mix at 25% interval...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Construction Palm kernel shells; Coarse aggregate; Curing; Physical properties; Compressive strength.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4036

Effects of different plant densities, fertilization rates and furrowing on foraged soybean production
Provedor de dados: 111
Autores: Shamsabadi, Hossein-Ali Tash; Ahmad, Desa; saberi, Alireza.
A field experiment carried out at the research farm, Gorgan University of Agricultural Sciences and Natural Resources, Iran, in 2013. The main objective of the present study was to determine the effect of plant densities, fertilization rates and furrowing on yield and some morphological characteristics of soybean. The other objective of this study was, if pod packaging phenomena did not happen; can be used from morphologic advantages of this plant as replacement strategy and as foraged soybean or not. Therefore, an experimental design laid out in a randomized complete block design arranged in a split plot factorial with three replications. The main plots attributed to planting density at three levels (100000, 150000 and 200000 bush ha-1). The sub plots...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Furrower; Soybean (Glycin Max); Seeding rate.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4137

Experimental apparatus to determine the power applied in vibrating vertical tillage
Provedor de dados: 111
Autores: SANTOS, CAMPOS MAGAÑA.
The aim of this work was to evaluate an alternative to reduce energy consumption applied to primary agricultural soil tillage. It was designed, built and instrumented an apparatus to evaluate the operation of vibration induced tillage equipment. The components that integrated the system for field valuation were: frame tool carrier that includes a system of three-point hitch and depth control mechanism; three sensors included were one to measure tillage force, other for torque and another one to measure the frequency of the subsoiler rudder oscillation. Oscillatory impact force is applied through a rod and crank mechanism through a subsoiler rudder whose movement is provided by a hydraulic motor. The apparatus evaluation is complemented by a system of data...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AGRICULTUAL ENGINEERING; AGRICULTURAL MACHINERY oscillatory subsoiler  pulling force  energy consumption  amplitude of oscillations.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3918

Draft force requirements of a dual bent blade subsurface tillage implement
Provedor de dados: 111
Autores: Salar, Mahmood Reza; Esehaghbeygi, Ali; Hemmat, Abbas; Kargarpour, Hoda.
Decreasing draft force of tillage tools is always one of the important concepts in tillage operation.  According to structure properties of bent leg, in this research, two upward and backward dual bent blade subsurface tools with two rake angles of 7.5 and 15 degree and two bend angles of 10 and 20 degree were developed and draft force, soil disturbance area and specific draft were compared in two soil moisture content levels of 0.7 and 0.9 of plastic limit (PL).  The effect of soil moisture content was not significant on any of the measured variables.  The draft force of the subsurface tools was increased with increasing rake and bend angles of blade.  The least mean of draft force was achieved in forward dual bent blade subsurface tool with bend angle of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rake angle; Bent blade; Subsurface tillage; Soil disturbance area; Dual bent blade.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3599

Development of corn cob-based fuel briquettes
Provedor de dados: 111
Autores: tuates, andres MORALES.
The study aimed to determine the optimum proportion of corn cob biomass material and binder for fuel briquettes. Three (3) levels of percentage binding agent (10, 15, 20) and three (3) different particle size (&lt; 2.2mm, 2.2-3.2 and &gt;3.2mm) were used in the experiments. The physical and thermal properties of the fuel briquettes were characterized in terms of density, percent shatter resistance, breaking strength, thermal efficiency and burning time.Results showed that    twenty percent binding and a particle size of  &lt;2.2mm exhibited a high density of 0.30gm/ cc, the highest performance in the compression test with a value of 241.62 N  and good shatter resistance of 99.25 percent. Likewise, the thermal efficiency of the briquettes produced from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corn cobs; Fuel briquettes; Physical and thermal properties; Burning time.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4089

Regression model of sunflower seed separation and the investigation of it’s germination in corona field
Provedor de dados: 111
Autores: fattahi, seyyed hossein.
Seed separation and cleaning is one of the important processes in obtaining pure high quality seed. The main characteristics that influence the ability to separation seeds are seed size (length, width, and thickness), shape, density, surface texture, terminal velocity, resilience, color, and electrical conductivity. Electrostatic separation is based on differences in the ability of particles to develop and maintain electric charges. In this study, a high tension roll‐type electrostatic separator was constructed to separation of sunflower’s seed in order to extraction of pure seed and remove impurities. An extended corona discharge field was generated by three wire type electrodes in the roll-type separator. The experiment was performed in the form of...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4060

Evaluación de la calidad tecnológica, nutricional y sensorial de barras de cereal con quinoa
Provedor de dados: 114
Autores: Steffolani,M. E.; Bustos,M. C.; Ferreyra,M. E.; León,A. E.
La semilla de quinoa (Chenopodium quinoa Willd) se caracteriza por presentar una composición balanceada; es rica en proteínas, fibra, vitaminas, minerales y antioxidantes, por lo que puede ser incorporada en la formulación de barras de cereal a fin de incrementar el valor nutricional de la alimentación diaria. El objetivo de este trabajo fue estudiar el efecto de la incorporación de semillas de quinoa en la calidad tecnológica, nutricional y sensorial de barras de cereal. Se elaboraron y analizaron tres muestras de barras de cereal, con diferentes porcentajes de sustitución de arroz crocante por semillas de quinoa y un control (sin quinoa). Se observó un incremento de peso de las barras de cereal, a medida que se aumentó el nivel de sustitución y una...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quinoa; Cultivo andino; Barra de cereal; Almidón digerible; Aceptabilidad.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200004

Estimación no destructiva del área foliar en plantas individuales de maíz (Zea mays L.) creciendo en canopeos
Provedor de dados: 114
Autores: Razquin,C.J; Maddonni,G.A; Vega,C.R.C.
En maíz (Zea mays L.), la competencia intraespecífica por recursos abióticos afecta atributos morfofisiológicos claves como el tamaño y duración del área foliar verde. En este estudio, se calibraron y validaron cuatro ecuaciones (Ec.1 a Ec.4) de estimación no destructiva del área foliar por planta en floración (AFp) en cuatro genotipos creciendo en canopeos con distinta disponibilidad de N (0 y 400 kg de N ha-1) y tres densidades de siembra (2, 9 y 16 pl m-2). El genotipo y la densidad produjeron las mayores variaciones del perfil vertical del área foliar. Las ecuaciones exhibieron distinta bondad de ajuste (Ec.4 &gt; Ec.1=Ec.2 &gt; Ec.3). La Ec.4, que utiliza un parámetro asociado con la senescencia foliar, superó al resto en su capacidad predictiva para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Área foliar por planta; Modelos; Competencia intraespecífica; Maíz.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000100003

Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient
Provedor de dados: 114
Autores: Druille,M.; Deregibus,V.; Garbulsky,M. F.
Lucerne is one of the most valuable forage species because of its high productivity and nutritional traits. However, the knowledge of spatio-temporal variability and environmental controls of its growth generated from the simultaneous study of several sites and throughout several years is extremely scarce. Five-year biomass data were analyzed from four rain fed sites located across a climatic and edaphic gradient in Argentina. The aims proposed were to characterize annual and seasonal lucerne growth, to analyze environmental controls of spatial and temporal growth, and to compare water use efficiency (WUE) among sites. Annual growth differed significantly among sites, ranging between 7,514 and 14,262 kg DM/ha. This range at the spatial scale was mainly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil properties; Water use efficiency; Forage production; Climate.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200002

Evaluación fenotípica y molecular de alelos de los genes Ppd-1 en una población biparental de trigo pan
Provedor de dados: 114
Autores: Lombardo,L. A.; Nisi,M. M.; Ghione,C. E.; Fisore,G. D.; Helguera,M.
El constante incremento de las temperaturas -como consecuencia del cambio climático- en las regiones donde se cultiva trigo, exige ajustar el ciclo del cultivo a períodos más cortos para evitar o disminuir los estreses causados por las altas temperaturas. En este sentido, el descubrimiento de fuentes genéticas innovadoras de modulación de la espigazón, así como también el desarrollo de herramientas moleculares que permitan capitalizarlas, tienen un rol central en el mejoramiento de este cultivo. En el presente estudio se evalúa, bajo condiciones controladas, el efecto de los genes Ppd-1 sobre la espigazón en una población biparental de trigo pan. Para tal fin, se desarrollaron marcadores moleculares inéditos para los genes Ppd-A1 y Ppd-B1. Los resultados...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trigo; Fotoperíodo; Ppd-1; Marcadores moleculares.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200005

Establecimiento in vitro de cuatro variedades de olivo cultivadas a campo (Olea europea L.)
Provedor de dados: 114
Autores: Turina,C. A.; Bima,P.
Las plantaciones de olivo (Olea europea L.) presentan problemas sanitarios que comprometen la producción y pueden mitigarse con el saneamiento vegetal mediante la obtención de plantas cultivadas in vitro. El objetivo de este trabajo fue desarrollar un protocolo de establecimiento in vitro de material vegetal proveniente de plantas adultas cultivadas a campo. Se evaluaron cuatro métodos de desinfección y la respuesta de los explantos a las citocininas 6-benciladenina (BA) y zeatina, fuentes de carbono (sacarosa y manitol), al carbón activado (0 y 1 g.L-1) y el efecto de las épocas de recolección de material vegetal. El uso de ultrasonido, durante la desinfección, permitió obtener valores de establecimiento adecuados (44 %). El BA mejoró la brotación (36%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ultrasonido; Zeatina; 6-benciladenina; Manitol; Carbón activado.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200006

Cambios en los parámetros de calidad del trigo candeal durante el almacenamiento
Provedor de dados: 114
Autores: Astiz,V; Errea,E. A.; Molfese,E. R.; Seghezzo,M. L.
La calidad del trigo recién cosechado y las fluctuaciones que puede sufrir durante el almacenamiento resultan temas de interés en la industria molinera. El objetivo de este trabajo fue estudiar los cambios producidos en la calidad industrial del trigo candeal (Triticum durum L.) recién cosechado y durante siete meses de almacenamiento. Los parámetros de grano y sémola determinados fueron: peso hectolitro, peso de mil granos, proteína, humedad, rendimiento molinero, falling number, color, contenido de gluten húmedo y seco, índice de gluten y propiedades farinográficas. La humedad del grano se mantuvo por debajo del 14% durante el tiempo de almacenamiento. Se observaron fluctuaciones en las tasas de extracción de sémola durante los primeros meses de ensayo....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trigo candeal; Almacenamiento; Calidad industrial.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200003

Efecto del porcentaje de pildorado sobre la implantación y productividad de alfalfa (Medicago sativa L.)
Provedor de dados: 114
Autores: Odorizzi,A.S; Arolfo,V; Basigalup,D.H; Solá,S.
El pildorado consiste en revestir a la semilla de alfalfa con una mezcla de rizobios, un fungicida o un insecticida, carbonato de calcio y un aglutinante. El objetivo fue comparar porcentajes de pildorado (10%, 20%, 30%, 50% y 75%) y semilla desnuda, con respecto a la densidad de plantas establecidas y la producción forrajera. Se implantó un ensayo con tres repeticiones en otoño de 2013 con una densidad fija (10 kg por ha), y se analizó el número de plantas por m² a diferentes días de la siembra, y al finalizar la primera temporada y la producción forrajera. Hasta los 17 y 29 días las plantas por m² fueron superiores en los dos tratamientos con semilla desnuda. A partir de los 46 días, los tratamientos con menor porcentaje de pildorado se ubicaron entre...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rizobios; Leguminosas; Peleteado.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000100007

Evaluación de la virosis del achaparramiento de la alfalfa (Medicago sativa L.) en dos ambientes contrastantes de Argentina
Provedor de dados: 114
Autores: Odorizzi,A. S.; Cornacchione,M. V.; Arolfo,V.; Basigalup,D. H.; Mijoevich,M. L.; Balzarini,M.
En los últimos años se vienen observando daños crecientes de una enfermedad viral que afecta la producción y la persistencia del cultivo de alfalfa en Argentina. El objetivo de este trabajo fue comparar la incidencia y severidad de la sintomatología de la enfermedad y explorar las relaciones de su dinámica con respecto a precipitaciones (pp) y temperaturas (T) ambientales en seis cultivares comerciales de alfalfa durante el período 2010-2014. Los cultivares CW1010, WL1058, Traful PV INTA, WL903, Monarca SP INTA y LPS8500 fueron evaluados en los campos experimentales de la Estación Experimental Agropecuaria (EEA) Manfredi del Instituto Nacional de Tecnología Agropecuaria (INTA) y de la EEA Santiago del Estero-INTA. En ambos ensayos se registraron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incidencia; Severidad; Virosis; Medicago sativa L.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200007

Producción de forraje de agropiro alargado en función de la disponibilidad de nitrógeno y la posición topográfica
Provedor de dados: 114
Autores: Cicore,P. L.; Berone,G. D.; Alvarez Prado,A.; Agnusdei,M. G.
El objetivo fue evaluar, en diferentes posiciones topográficas, el crecimiento de agropiro alargado (Thinopyrum ponticum [Podp.] Barkworth &amp;amp; D. R. Dewey Phil) bajo diferente disponibilidad de nitrógeno (N). Se seleccionaron siete sitios en función de la elevación, y en cada sitio se evaluaron dos tratamientos: N- (sin aplicación de N) y N+ (300 kg ha-¹ de N). En la biomasa aérea acumulada (BA) final se detectó interacción entre el nivel de N y el sitio. En N+ se hallaron diferencias significativas entre sitios, mientras que en el tratamiento N- no se encontraron diferencias. La variabilidad de la BA se debió principalmente a diferencias en la eficiencia de uso de la radiación. La altimetría de los sitios se relacionó negativamente con la BA. Esto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Altimetría; Humedad del suelo; Pasturas; Suelos bajos.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200009

Actividad de cletodim y haloxifop R-metil en el suelo y su efecto fitotóxico en el cultivo de maíz (Zea mays)
Provedor de dados: 114
Autores: Ustarroz,D.; Montoya,J.; Ledda,A.; Belluccini,P. A.; Cervellini,J. M.
Los herbicidas haloxifop R-metil y cletodim pueden persistir activos en el suelo causando efectos fitotóxicos a cultivos de gramíneas cuando son aplicados próximos a la siembra. En este trabajo se realizaron experimentos de campo en cuatro ambientes y en macetas bajo invernáculo. El objetivo fue evaluar el efecto fitotóxico de distintas dosis de haloxifop R-metil y cletodim aplicados al suelo en el cultivo de maíz y estudiar los requerimientos de riego y tiempo entre aplicación y siembra, para evitar efectos fitotóxicos. En condiciones de campo, 62,5 y 120 g.i.a. ha-1 de haloxifop R-metil y cletodim respectivamente, produjeron fitotoxicidad visual menor a 14 %. Con dosis superiores, en dos de los cuatro ambientes se observaron mayores niveles de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inhibidores de ACCasa; Residualidad; Fitotoxicidad; Maíz.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200008

Caracterización de harinas de tritíceas híbridas
Provedor de dados: 114
Autores: Castaño,M.N; Ferrari,E.D; Picca,A.T; Curti,M.I; Ribotta,P.D; León,A.E; Ferreira,V.A; Grassi,E.M; Ferreira,A; di Santo,H.E; Castillo,E.A; Paccapelo,H.A.
Triticales (x Triticosecale Wittmack) y tricepiros (x Triticosecale Witt. X x Agrotricum A. Camus) se mejoran con la finalidad de obtener cultivares de doble propósito (forraje y grano). Para su utilización en consumo humano, la calidad de las harinas de triticales es frecuentemente evaluada midiendo el diámetro y factor de expansión de las galletitas horneadas. Estos indicadores están fuertemente relacionados al contenido de almidón dañado, proteína y polisacáridos no amiláceos de la harina que determinan sus propiedades de absorción de agua. Se evaluaron 25 líneas experimentales, ocho cultivares de triticale y uno de tricepiro en Santa Rosa, La Pampa, Argentina, durante 2012, mediante análisis de correlación simple y de conglomerados. Se observaron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Factor galletita; Triticales; Tricepiro; Parámetros físico-químicos.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000100002

Caenodelphax teapae (Fowler) (Hemiptera: Delphacidae): nuevo vector natural del Mal de Río Cuarto virus (MRCV, Fijivirus) en Argentina
Provedor de dados: 114
Autores: Velazquez,P.D; de Remes Lenicov,A.M.M; Truol,G.A.
El Mal de Río Cuarto virus (MRCV) es el agente causal del mal de Río Cuarto, una de las principales enfermedades del maíz en Argentina. Es transmitido en la naturaleza principalmente por Delphacodes kuscheli (Insecta: Hemiptera). La presencia de otros delfácidos en áreas afectadas por la enfermedad, permite suponer que éstos tendrían un rol en su epidemiología. En prospecciones realizadas entre los años 2003 y 2006 en las provincias de Tucumán y Salta (noroeste argentino), Caenodelphax teapae se destacó por ser una de las especies más abundantes en la vegetación espontánea. El MRCV fue transmitido experimentalmente a trigo a partir de ejemplares naturalmente infectados provenientes de campo en Tucumán. La reacción del virus en las pruebas serológicas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mal de Río Cuarto virus; Fijivirus; Caenodelphax teapae; Vector natural.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000100004

La cobertura del cultivo como indicador de la productividad de maíz en un lote con siembra variable
Provedor de dados: 114
Autores: de la Casa,A; Ovando,G; Bressanini,L; Martínez,J; Miranda,C; Díaz,G.
La variabilidad del rendimiento de un lote se puede monitorear por diversos medios remotos. El objetivo del trabajo fue determinar la cobertura del cultivo (CC) de maíz (Zea mays L.) a partir de datos de NDVI, para evaluar las diferencias productivas en un lote de 45 ha bajo riego ubicado al sur de la ciudad de Córdoba, Argentina, durante el ciclo 2013-2014. En el lote se establecieron seis sectores de muestreo donde periódicamente fueron adquiridas fotografías con una cámara digital que produce datos de NDVI. A los efectos de determinar CC, las imágenes de NDVI se clasificaron aplicando distintos umbrales para discriminar entre píxeles con vegetación y suelo. Cualquiera de los umbrales utilizados permitió establecer diferencias de CC entre sectores que se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultura de precisión; NDVI; Biomasa; Agua del suelo.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000100001

Método alternativo de germinación para determinar la calidad de semillas en Buffel Grass (Cenchrus ciliaris L.)
Provedor de dados: 114
Autores: Agüero,C.G; Pereyra,G.R; Rolando,R.O.
Un problema que surge al evaluar la calidad fisiológica en Cenchrus ciliaris L. es el bajo porcentaje de germinación obtenido en los ensayos del ISTA debido a que la dormición en las semillas no es eliminada eficazmente con los pretratamientos indicados. El objetivo de este trabajo fue desarrollar un método de análisis que permitiera determinar de manera más precisa la calidad de la semilla en C. ciliaris L. Se utilizaron semillas recién cosechadas del cultivar Texas. Los ensayos se extendieron por 6 meses, con intervalos de 3 meses entre cada uno. Se determinó la relación porcentual de fascículos llenos y la viabilidad por tetrazolio. En los ensayos de germinación se utilizaron diferentes alternativas de preparación de las semillas: fascículos intactos,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormición; Cariópside; Pretratamientos.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000100005

Efecto de la siembra directa sobre los procesos de adsorción de fósforo en los molisoles del centro norte de la provincia de Córdoba (Argentina)
Provedor de dados: 114
Autores: Rollán,A. A. del C.; Bachmeier,O. A.; Silva Rossi,M. M.; Moreno,M. A.
Bajo la hipótesis que señala que en condiciones de siembra directa (SD) la estratificación de las propiedades edáficas modifica los parámetros de sorción de fósforo (P), se plantearon como objetivos de este trabajo: i) estimar los parámetros de sorción P mediante uso de isotermas de Langmuir en muestras de distinta profundidad provenientes de lotes de cultivo bajo SD continua; ii) analizar las similitudes y diferencias entre los parámetros obtenidos; y iii) identificar la relación entre las propiedades edáficas del estrato superficial y los parámetros estimados. Se equilibraron muestras de suelo de 0 a 5 y 0 a 20 cm con soluciones de concentración creciente en P. A partir de la relación entre el P adsorbido y la concentración de P en equilibrio se estimó...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Langmuir; Estratificación; Materia orgánica del suelo; Haplustoles.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000200001

Análisis de la evolución del clima y los pastizales naturales en el noroeste de la provincia de Chubut, Argentina, durante el período 2000-2014: identificación de variables asociadas a la disminución de las existencias ganaderas en la región
Provedor de dados: 114
Autores: García Martínez,G.C; Ciari,G; Gaitan,J; Caruso,C; Nagahama,N; Opazo,W; Nakamatsu,V; Lloyd,C; Cotut,C; Irisarri,G; Escobar,J.
Una elevada proporción del territorio argentino corresponde a tierras secas y una tercera parte de éstas se hallan en la Patagonia. Esta región históricamente ha sufrido procesos de deterioro del pastizal. Generalmente, la degradación es atribuida al uso ganadero; sin embargo, el efecto del clima sobre estos sistemas ha sido poco analizado. El objetivo de este trabajo fue analizar la evolución del clima y de los pastizales naturales, a través de la identificación de variables que permitan comprender los posibles cambios en las existencias ganaderas para el noroeste de la provincia de Chubut, en el período 2000-2014. Para ello se analizaron diferentes tipos de datos: climáticos, índice verde normalizado (NDVI), lecturas de monitores MARAS y existencias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ganadería; Imágenes satelitales; Monitores ambientales (MARAS); Patagonia.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000100006

Does polymer-based encapsulation enhance performance of plant growth promoting microorganisms? A meta-analysis view
Provedor de dados: 115
Autores: Pacheco-Aguirre,J. Alberto; Ruíz-Sánchez,Esau; Ballina-Gómez,H. Salomón; Alvarado-López,C. Juan.
Abstract Various studies have been undertaken to evaluate the effect of polymer-based encapsulation on performance of plant growth promoting microorganism. However there is no systematic analysis about the performance of these microorganisms when encapsulated in a polymer-based matrix. Relevant published papers were retrieved by conducting searches in Google Scholar, Only Library, Science Direct, Springer Journal, Taylor &amp; Francis and Wiley Online Library. An examination of 117 articles was carried out and of those only 11 satisfied our criteria for inclusion into the meta-analysis. From these articles, we selected 41 cases to be evaluated. We used as keywords “microcapsules”, “capsules”, “microorganisms”, “growth”, “promoting”, “germination”...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus sp.; Inoculant; Microcapsules; Plant growth; Seed germination.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200173

Productividad primaria neta aérea en plantaciones comerciales de Eucalyptus urophylla S. T. Blake en Huimanguillo, Tabasco, México
Provedor de dados: 115
Autores: Hernández-Ramos,Adrián; Valdez-Lazalde,José R.; Ángeles-Pérez,Gregorio; Santos-Posadas,Héctor M. de los; Hernández-Ramos,Jonathan; Peduzzi,Alicia; Carrero,Omar.
Resumen La productividad primaria neta aérea (PPNA) es un indicador del rendimiento de las plantaciones. El objetivo del estudio fue estimar la producción de hojarasca y PPNA en plantaciones forestales comerciales de Eucalyptus urophylla S. T. Blake en Huimanguillo, Tabasco, México. La hipótesis nula fue que la PPNA disminuye con el aumento de la edad. Para estimar la PPNA se consideró: 1) la producción total anual de hojarasca (PTH), estimada con la información de 112 trampas de captura, distribuidas en plantaciones de 1 a 7 años de edad, y mediciones mensuales de caída de hojarasca; 2) el incremento en biomasa por sitio, estimado con la biomasa inicial y final de 28 sitios de muestreo de 500 m2, distribuidos en las plantaciones con un diseño experimental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomasa aérea; Incremento en biomasa; Hojarasca.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000300343

Toxicidad de acaricidas para el ácaro rojo de las palmas Raoiella indica (Acari: Tenuipalpidae)
Provedor de dados: 115
Autores: Sánchez-Vázquez,E. Patricia; Osorio-Osorio,Rodolfo; Hernández-Hernández,L. Ulises; Hernández-García,Vidal; Márquez-Quiroz,César; Cruz-Lázaro,Efraín De la.
Resumen El ácaro rojo de las palmas, Raoiella indica Hirst (Acari: Tenuipalpidae), es una plaga de introducción reciente en México, y está en vigilancia epidemiológica. La actividad fitosanitaria para mitigar su expansión y daños incluye muestreo, diagnóstico y control de focos de infestación, mediante podas sanitarias y aplicación de acaricidas. Los acaricidas se eligen con base en pruebas de efectividad desarrolladas en otros países, donde las poblaciones locales de R. indica pueden presentar respuesta diferente a los acaricidas. El objetivo de este estudio fue determinar la toxicidad de 14 acaricidas en una población del ácaro rojo R. indica recolectada en Tabasco, México. Los bioensayos se realizaron en condiciones de laboratorio, en hembras adultas de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Control químico; Cocos nucifera; Bioensayo.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100081

PRODUCTIVIDAD DE HÍBRIDOS NO CONVENCIONALES DE MAÍZ DE ENDOSPERMO AMARILLO PARA VALLES ALTOS DE MÉXICO
Provedor de dados: 115
Autores: Martínez-Yañez,Beatriz; Tadeo-Robledo,Margarita; Benítez-Riquelme,Ignacio; Vázquez-Carrillo,Gricelda; Espinosa-Calderón,Alejandro; Mejía-Contreras,J. Apolinar; López-López,Consuelo; Martínez-Díaz,Francisco.
Resumen México importa cada año 10 millones Mg de grano de maíz amarillo por lo que se debe aumentar la producción, lo cual requiere variedades mejoradas. El objetivo de esta investigación fue determinar la capacidad productiva, heterosis y precocidad de 12 híbridos no convencionales de maíz amarillo con variedades mejoradas, líneas y cruzas simples como progenitores. Los híbridos no convencionales, así como sus progenitores, se evaluaron en cuatro experimentos uniformes, durante los ciclos primavera verano 2013 y 2014 en los campos experimentales de la Facultad de Estudios Superiores Cuautitlán, de la Universidad Nacional Autónoma de México y del Campo Experimental Valle de México del Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grano amarillo; Híbridos no convencionales; Variedades mejoradas.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600635

Determinación de la DL50 Y GR 50 con rayos gamma (60Co) en protocormos de Laelia autumnalis in vitro
Provedor de dados: 115
Autores: Hernández-Muñoz,Selene; Pedraza-Santos,M. Elena; López,P. Antonio; Cruz-Torres,Eulogio De La; Fernández-Pavía,S. Patricia; Martínez-Palacios,Alejandro; Martínez-Trujillo,Miguel.
Resumen Laelia autumnalis es una orquídea con valor ornamental alto en México, pero su comercialización se restringe porque las variedades con calidad comercial no existen. La mutagénesis con radiación es un método efectivo para generar variedades y depende de la radiosensibilidad de los tejidos. El objetivo del estudio fue determinar las dosis letal y reductiva media a los rayos gamma en protocormos de L. autumnalis tratados con 0, 5, 10, 15, 20, 25, 30, 35, 40, 45 y 50 Gy. El diseño experimental fue completamente al azar, con tres repeticiones y 500 a 700 protocormos como unidad experimental. A los 45 d después de la irradiación (ddi) se cuantificaron los porcentajes de supervivencia, protocormos fotosintéticos, protocormos con promeristemos, con hojas,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laelia autumnalis; Mejoramiento genético; Mutagénesis; Radiación ionizante; Orquídeas.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500507

Identificación molecular y evaluación antagónica in vitro de cepas nativas de Trichoderma spp. sobre hongos fitopatógenos de raíz en frijol (Phaseolus vulgaris L.) cv. Montcalm
Provedor de dados: 115
Autores: Sánchez-García,Bertha M.; Espinosa-Huerta,Elsa; Villordo-Pineda,Emiliano; Rodríguez-Guerra,Raúl; Mora-Avilés,María A.
Resumen Trichoderma spp. es un hongo de la división Ascomycota con gran potencial para controlar enfermedades en los cultivos con importancia económica. Este hongo antagonista inhibe el crecimiento de microorganismos fitopatógenos, entre los que destacan los causantes de enfermedades radiculares, como Rhizoctonia spp. y Fusarium spp. El objetivo de este estudio fue identificar especies de Trichoderma y caracterizar su actividad antagónica in vitro en cepas patogénicas de Rhizoctonia solani, F. oxysporum, F. verticillioides y F. solani con virulencia diferente, determinada a partir de pruebas de patogenicidad en plantas de frijol (Phaseolus vulgaris L.) cv. Montcalm. La hipótesis fue que la identificación y caracterización antagónica de especies de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichoderma spp.; Rhizoctonia solani; Fusariumox ysporum; F. verticillioides; F. solani; Antagonismo; Micoparasitismo.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100063

SITUACIÓN ACTUAL DE HONGOS ASOCIADOS A LA SECADERA DE LA FRESA (Fragaria × ananassa Duch.) EN GUANAJUATO, MÉXICO
Provedor de dados: 115
Autores: Mariscal-Amaro,Luis A.; Rivera-Yerena,Alfredo; Dávalos-González,Pedro A.; Ávila-Martínez,Daniel.
Resumen La secadera de la fresa (Fragaria×ananassa Duch.) es la enfermedad principal de este cultivo en el estado de Guanajuato, México, y causa pérdidas de hasta 7.5 Mg ha-1 (50 % de la producción). En Guanajuato la enfermedad se asocia con 14 especies de hongos y Fusarium oxysporum es el más frecuente. El objetivo de este estudio fue conocer la presencia y frecuencia actual de los hongos e identificar otras especies asociadas con esa enfermedad, para lo cual se analizaron plantas con síntomas típicos de la enfermedad provenientes de 34 parcelas comerciales durante los ciclos primavera-verano 2014 y 2015. La identificación de los hongos se hizo mediante características culturales, morfológicas y amplificación y secuenciación de las regiones espaciadoras...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragaria × ananassa; Fusarium pseudonygamai; Fusarium fujikuroi; Fusarium proliferatum; Fusarium brachygibbosum; Fusarium verticillioides.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600673

Biomasa aérea y factores de expansión en plantaciones forestales comerciales de Eucalyptus urophylla S. T. Blake
Provedor de dados: 115
Autores: Hernández-Ramos,Jonathan; Santos-Posadas,H. Manuel De los; Valdez-Lazalde,J. René; Tamarit-Urias,J. Carlos; Ángeles-Pérez,Gregorio; Hernández-Ramos,Adrián; Peduzzi,Alicia; Carrero,Omar.
Resumen La biomasa aérea es fundamental para determinar la cantidad de carbono almacenado en la cubierta forestal. Una forma de obtener estimaciones precisas de biomasa aérea es mediante factores de expansión, que utilizan datos de volumen de árboles en pie, tomados durante el inventario forestal. El objetivo de este estudio fue estimar la biomasa aérea total y por componente estructural a partir de modelos alométricos y factores de expansión de biomasa (FEB), y evaluar la aplicabilidad en inventarios forestales para clones de Eucalyptus urophylla S. T. Blake de plantaciones forestales comerciales en Tabasco, México. Mediante un muestreo al azar en siete plantaciones se seleccionaron 93 árboles, de uno a siete años de edad, y se determinó la biomasa total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Celulósicos; Eucalyptus urophylla; Inventarios forestales; Manejo forestal; Relaciones alométricas.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000800921

Micoflora asociada a manchas y tizones foliares en trigo (Triticum aestivum L.) de riego en El Bajío, México
Provedor de dados: 115
Autores: Mariscal-Amaro,Luis A.; Solís-Moya,Ernesto; Leyva-Mir,Santos G.; Anaya-López,José L.; Villaseñor-Mir,Héctor E.
Resumen La producción de trigo (Triticum aestivum L.) bajo riego en la región de El Bajío, México, es afectada principalmente la roya de la hoja (Puccinia triticina Eriks.) y la roya lineal amarilla (Puccinia striiformis f. sp. tritici). En años recientes, en esta región se observaron otros síntomas como tizones y manchas foliares que también limitan la productividad de las variedades de trigo sembradas. Para identificar a los hongos asociados con esta sintomatología, en este estudio se recolectaron hojas con síntomas de tizones y manchas foliares en 12 municipios de los estados de Guanajuato, Michoacán y Jalisco, en los ciclos agrícolas otoño-invierno 2012-2013 y 2013-2014. La identificación de los hongos se realizó con la morfología, la amplificación y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bipolaris sorokiniana; Helminthosporium sativum; Alternaria alternata; Septoria tritici; Fusarium proliferatum; Fusarium moniliforme.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200189

Características físicas y de germinación en semillas y plántulas de frijol (Phaseolus vulgaris L.) silvestre, domesticado y su progenie
Provedor de dados: 115
Autores: Morales-Santos,Martha E.; Peña-Valdivia,Cecilia B.; García-Esteva,Antonio; Aguilar-Benítez,Gisela; Kohashi-Shibata,Josué.
Resumen La fuente de tolerancia del frijol (Phaseolus vulgaris L.) a factores bióticos y abióticos de los cultivares que se consumen actualmente podría encontrarse en los congéneres silvestres, pero éstos y la progenie de sus cruzas deben caracterizarse primero. El objetivo de este estudio fue evaluar las características físicas y germinación de semillas y emergencia de plántulas de frijol (P. vulgaris L.) silvestre, domesticado y su progenie. La hipótesis fue que una o más características de la progenie sobresalen respecto a los cultivares. En muestras aleatorias de tres recolectas silvestres (Durango Típico, Chihuahua y S13), dos cultivares (Bayo Mecentral y Negro Tacaná) y cinco progenies (3.3, 11.1, 51b, 53b, y 118b) del silvestre S13 y cv. Negro...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomasa de semillas; Dimensiones de semillas; Phaseolus vulgaris; Domesticación; Leguminosa silvestre.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100043

Producción de ácido jasmónico por fermentación líquida con cepas de Botryodiplodia theobromae nativas del sureste mexicano
Provedor de dados: 115
Autores: Laredo-Alcalá,Elan I.; Martínez-Hernandez,José L.; Guillen-Cisneros,Lourdes; Hernández-Castillo,Francisco D.
Resumen El ácido jasmónico (AJ) es una hormona endógena reguladora del crecimiento de plantas en las especies vegetales. Interviene en senescencia y resistencia y lo produce la planta después del daño ocasionado por microorganismos o insectos patógenos. Una alternativa para su producción es usar microorganismos y el más usado es Botryodiplodia theobromae. El objetivo de este estudio fue evaluar la producción de AJ mediante fermentación líquida con cepas de B. theobromae, aisladas de zonas tropicales del sureste de México. El diseño experimental fue completamente al azar y evaluamos la capacidad de producción de AJ de cada cepa.Los datos se analizaron con ANDEVA y las medias se compararon con la prueba de Tukey (p≤0.05) para lo cual se usó el programa SAS....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Botryodiplodia theobromae; Bioproducción; Jasmonatos; Metabolitos secundarios; Fitohormona.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000800885

Microwave drying of plant tissue for nutritional analysis of Corymbia citriodora (Hook.) and Hevea brasiliensis Muell. Arg.
Provedor de dados: 115
Autores: Teixeira,Matheus Pozetti; Campos,Cid Naudi Silva; Prado,Renato de Mello; Caione,Gustavo; Mingotte,Fábio Luiz Checchio; Agostinho,Flavia Bastos.
Abstract The method used to dry plant tissue samples may modify its nutrient content, and results in incorrect diagnostic of crop nutritional status. The hypothesis was that microwave drying method does not affect the nutrient content of leaves neither the interpretation of the results, as compared to oven-drying procedure. In this study we evaluated the effect of microwave drying of eucalyptus (Corymbia Citriodora (Hook.)) and rubber trees (Hevea brasiliensis Muell. Arg.) leaves on dry matter and macronutrient content, as compared to oven drying. The study was performed in a laboratory at the Department of Soils and Fertilizers of Universidade Estadual Paulista “Julio de Mesquita Filho”, UNESP, Jaboticabal-SP-Brazil. The experiments were: one using leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical analysis; Dry matter; Nutritional status; Plant material; Plant nutrition.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500555

ACCIONES PARA CONSERVACIÓN DE SUELOS IDENTIFICADAS MEDIANTE ÍNDICES KAPPA AL NORESTE DE DURANGO, MÉXICO
Provedor de dados: 115
Autores: López-Santos,Armando; Bueno-Hurtado,Palmira; Arreola-Ávila,J. Guadalupe; Pérez-Salinas,J. Emmanuel.
Resumen La estimación de la erosión edáfica basada en modelación, como con la ecuación universal de pérdida de suelo (USLE) o la USLE revisada (RUSLE), considera la acción antrópica (factor C) para los usos de la tierra y tiene limitaciones para detectar cómo sucede esa influencia. El objetivo de esta investigación fue desarrollar un procedimiento para identificar la presencia o ausencia de acciones de conservación de suelos a partir de la observación experta de evidencias en terrenos dedicados a la agricultura de secano, del Norte de Durango, México. La unidad de estudio (UE) de 2250 km2, incluyó a San Pedro del Gallo y San Luis del Cordero (25° 21” y 25’ 59” N; -104° 29”, -104° 1” O y clima árido y semiárido). El diseño experimental fue completamente al...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservación de suelos; Erosión hídrica; Observación experta.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600591

Variabilidad genética de Xanthomonas fragariae y su severidad en genotipos de fresa (Fragaria×ananassa Duch)
Provedor de dados: 115
Autores: Rivera-Zabala,Noemí; Ochoa-Martínez,Daniel L.; Rojas-Martínez,Reyna I.; Rodríguez-Martínez,Douglas; Aranda-Ocampo,Sergio; Zapién-Macías,José M.
Resumen Xanthomonas fragariae es el agente causal de la mancha angular de la hoja en fresa (Fragaria×ananassa Duch) y es un microorganismo sujeto a cuarentena para la movilización y transporte de material vegetal de propagación en varios países. En México, la información sobre la diversidad genética del patógeno y su severidad en variedades comerciales es desconocida. Este estudio tuvo como objetivo conocer la variabilidad genética de X. fragariae y evaluar su severidad en diferentes materiales genéticos de fresa. Para ello se realizó un análisis filogenético con secuencias parciales de los genes hrp y gyrB de 14 aislamientos de X. fragariae recolectados en localidades productoras de los estados de Michoacán, Jalisco y Puebla, México. El árbol filogenético...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Xanthomonas fragariae; Fragaria×ananassa; Hrp; GyrB; Escala diagramática de severidad.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000300329

Efecto del aceite de soya sobre la concentración de los ácidos grasos vaccenico y ruménico en leche de vacas en pastoreo
Provedor de dados: 115
Autores: Vieyra-Alberto,Rodolfo; Arriaga-Jordán,Carlos M.; Domínguez-Vara,Ignacio A.; Bórquez-Gastelum,José L.; Morales-Almaráz,Ernesto.
Resumen El aceite de soya, rico en ácido linoleico, además del aporte de ácido linolénico mayoritario en el forraje, puede mejorar la producción de los ácidos grasos (AG) insaturados en la leche de vacas en pastoreo. El objetivo de este estudio fue evaluar el efecto de la adición de aceite de soya (0, 3 y 6 % BS), en dietas completas mezcladas parcial (pTMR) para seis vacas Holstein multíparas en pastoreo, sobre el desempeño productivo, producción, composición y perfil de AG, con énfasis en el contenido de AG vaccénico (AV) y ruménico (AR) en leche. El diseño experimental fue un cuadro latino repetido 3×3 con tres periodos experimentales de 21 d cada uno, y los tratamientos (T) fueron: T1=pTMR-0, T2=pTMR-3 y, T3=pTMR-6. Los datos se analizaron con el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aceite de soya; Ácidos grasos; Pastoreo; Bovinos leche; Ácido linoleico conjugado.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000300299

Monitoreo de la calidad proteica de maíz o2 (Zea mays L.) en líneas endogámicas y su progenie F1 y F2
Provedor de dados: 115
Autores: Arellano-Vázquez,J. Luis; Vázquez-Ramos,J. Manuel; García-Ramírez,Elpidio; Gómez y-Gómez,Y. Mercedes; Gutiérrez-Hernández,G. Fernando.
Resumen El maíz opaco 2 (o2) (Zea mays L.) es una opción para mejorar la nutrición humana en sectores sociales que basan su alimentación en este cereal, por sus elevados contenidos de los aminoácidos esenciales lisina y triptófano, por lo cual su mejoramiento genético es relevante. En este estudio se analizó la obtención de híbridos de maíz o2, desde las líneas parentales hasta la generación de consumo de grano (la F2), Los objetivos fueron determinar el contenido de triptófano, lisina, proteína total e índice de calidad de proteína de seis líneas de maíz o2, de las 15 cruzas simples formadas con ellas y de la generación F2 de esas cruzas, y además observar si esas variables disminuyen al pasar de la F1 a la F2. En el año 2011 se sembraron las líneas de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoácidos esenciales; Calidad de proteína; Depresión endogámica; Lisina; Opaco2; QPM; Triptófano.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400425

Efecto del manejo de la cobertura vegetal sobre la erosión hídrica en cafetales de sombra
Provedor de dados: 115
Autores: Geissert,Daniel; Mólgora-Tapia,Ana; Negrete-Yankelevich,Simoneta; Hunter Manson,Robert.
Resumen Estudios sobre el manejo de la cobertura herbácea mostraron que el chapeo (corte con machete) controla la erosión del suelo en cafetales ubicados sobre pendientes. Sin embargo, un número creciente de productores prefiere utilizar herbicidas para bajar el costo del chapeo, sin saber si este cambio de práctica incrementa la erosión del suelo y disminuye la productividad a largo plazo. Por lo tanto, el objetivo de esta investigación fue analizar la relación entre la cobertura vegetal (arbórea, arbustiva, herbácea y de hojarasca) y la tasa de erosión, y cuantificar los efectos del chapeo y del herbicida, en cuatro cafetales de sombra del centro del estado de Veracruz, México. En cada finca se instalaron tres bloques con tres parcelas rectangulares de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agroforestería; Café; Erosión; Modelo lineal mixto.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200119

Aislamiento y caracterización de rizobacterias asociadas a cultivos de arroz (Oryza sativa L.) del Norte de Santander (Colombia)
Provedor de dados: 115
Autores: Florez-Márquez,Jessica D.; Leal-Medina,Gloria I.; Ardila-Leal,Leidy D.; Cárdenas-Caro,Diana M.
Resumen Las rizobacterias promotoras de crecimiento vegetal son reconocidas y estudiadas por sus efectos benéficos en varios cultivos. Cepas de los géneros Azotobacter y Pseudomonas se aislaron de suelo rizosférico de cultivos de arroz (Oryza sativa L.) de 10 fincas en el distrito de riego del río Zulia, Norte de Santander, Colombia. El aislamiento bacteriano se hizo a partir de gránulos de suelo y diluciones seriadas de suelo, sembradas en agar Ashby para Azotobacter y King B para Pseudomonas fluorescentes, respectivamente. Cuarenta y dos aislamientos se conservaron en viales con solución salina estéril (0.85 % NaCl) en refrigeración a 4 °C y se ingresaron al Banco de Cepas del Laboratorio de Investigaciones en Biología Aplicada de la Universidad...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azotobacter; Pseudomonas putida; Solubilización de fosfatos; Fijación biológica de nitrógeno; Ácido indolacético; Sideróforos.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400373

Capacidad reproductiva de Pinus pinceana Gordon en el límite sur de su distribución natural
Provedor de dados: 115
Autores: Quiroz-Vázquez,Rosa I.; López-Upton,Javier; Cetina-Alcalá,Víctor M.; Ángeles-Pérez,Gregorio.
Resumen Pinus pinceana Gordon es un piñonero endémico de México, con distribución fragmentada, que es mayor en el noreste y escasa en Hidalgo, donde se espera problemas reproductivos. El objetivo de este estudio fue determinar, de 2001 a 2003, la producción de conos y semilla en San Cristóbal (SC) y El Arenalito (EA), municipio El Cardonal, Hidalgo, poblaciones aisladas y en el margen sur de su distribución natural. Cinco conos se recolectaron de cada uno de los 25 árboles seleccionado en cada localidad. En cinco de doce características evaluadas entre las poblaciones se encontraron diferencias significativas, con variación alta entre fechas de producción. En 2001 hubo mayor producción de conos y la eficiencia de producción de semilla llena fue 54 y 55%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eficiencia; Producción de semilla; Pino piñonero; Poblaciones marginales; Producción de conos.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100091

Efectos del rodillo aireador y el fuego en las propiedades físicas e hidrológicas del suelo en Matorrales de Coahuila, México
Provedor de dados: 115
Autores: Medina-Guillén,Romelia; Cantú-Silva,Israel; González-Rodríguez,Humberto; Pando-Moreno,Marisela; Kubota,Tetsuya; Gómez-Meza,Marco V.
Resumen El desierto Chihuahuense es un área pastoreada desde el siglo XVI, con importancia ecológica y económica en el país, donde el sobrepastoreo ha provocado cambios en las propiedades físicas e hidrológicas del suelo. Estos cambios se evaluaron en ecosistemas de matorral desértico micrófilo (MDM) y rosetófilo (MDR) en Coahuila, México. Las técnicas fueron de rehabilitación con rodillo aireador en 2004, 2008 y 2011 y de un incendio natural. La hipótesis fue que ambas promueven el incremento de la materia orgánica del suelo (MOS), la infiltración de agua y disminuyen la compactación de suelo. El diseño experimental fue bifactorial con 10 tratamientos: 1) testigos (MDMt y MDRt), 2) rodillo aireador aplicado en 2004 (MDMRA04 y MDRRA04), 3) 2008 (MDMRA08 y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Materia orgánica del suelo; Matorral micrófilo y rosetófilo; Compactación de suelo; Permeabilidad; Fuego.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500471

Componentes del rendimiento en variedades de alfalfa (Medicago sativa L.)
Provedor de dados: 115
Autores: Rojas-García,Adelaido R.; Torres-Salado,Nicolás; Joaquín-Cancino,Santiago; Hernández-Garay,Alfonso; Maldonado-Peralta,María de los Á.; Sánchez-Santillán,Paulino.
Resumen La alfalfa (Medicago sativa L.) es la leguminosa forrajera más importante para alimentación de ganado lechero en México. El objetivo de este estudio fue evaluar la respuesta productiva de cinco variedades de alfalfa en intervalos de corte definidos estacionalmente. La hipótesis fue que la variedad San Miguelito es la más productiva entre las variedades evaluadas. Las variedades San Miguelito, Júpiter, Atlixco, Vía láctea y Cuf 101 se distribuyeron aleatoriamente en 20 parcelas experimentales de 12x9 m, en un diseño de bloques completos al azar con cuatro repeticiones. Las evaluaciones incluyeron rendimiento de forraje, relación hoja: tallo, peso por tallo, población de tallos por m2, población de plantas por m2 y composición botánica y morfológica....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medicago sativa; Rendimiento de forraje; Relación hoja:tallo; Peso de tallo; Población de tallos.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000700697

Influencia clímatica en el reclutamiento de Pinus hartwegii Lindl. del ecotono bosque-pastizal alpino en Monte Tláloc, México
Provedor de dados: 115
Autores: Astudillo-Sánchez,Claudia C.; Villanueva-Díaz,José; Endara-Agramont,Angel R.; Nava-Bernal,Gabino E.; Gómez-Albores,Miguel Á.
Resumen El límite superior arbóreo de sitios elevados de México se espera que sea sensible al cambio climático. Por tal motivo se analizó el reclutamiento de Pinus hartwegii en el ecotono bosque-pastizal alpino de Monte Tláloc en el Estado de México, para detectar un posible avance del intervalo altitudinal de la especie a consecuencia del incremento en la temperatura. Para explorar la influencia del clima en el patrón de reclutamiento, se comparó la frecuencia de edades de P. hartwegii con relación a la temperatura y la precipitación; además, este impacto se analizó con la variación interanual en el grosor de anillos de crecimiento y su relación con los índices de El Niño-Oscilación del Sur (ENOS). La frecuencia de edades se fundamentó en un tamaño de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anillos de crecimiento; Cambio climático; Región centro de México; Límite superior arbóreo; El Niño-Oscilación del Sur (ENOS); Pinus hartwegii.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100105

MACF-IJ, método automatizado para medir color y área foliar mediante imágenes digitales
Provedor de dados: 115
Autores: Sauceda-Acosta,Carlos P.; González-Hernández,Víctor A.; Sánchez-Soto,Bardo H.; Sauceda-Acosta,Raúl H.; Ramírez-Tobías,Hugo M.; Quintana-Quiroz,José G.
Resumen El color y área foliar (AF) son importantes en estudios fisiológicos y fitogenéticos, pero su obtención es laboriosa, incluso con integradores y colorímetros. Ambas características pueden medirse con análisis de imágenes digitales (AID), pues, aunque existen programas gratuitos específicos para obtener el AF éstos requieren intervención del usuario, no registran las dimensiones ni coloración foliar. El objetivo de este estudio fue mostrar el funcionamiento de Macf-IJ para medir área y color foliar mediante AID. Los resultados se compararon con mediciones manuales y del integrador Li-Cor 3000® del área de siete figuras geométricas. También AF se midió en 13 herbáceas; el color y el contenido relativo de clorofila (CRC), con SPAD 502®, en Rhynchosia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Área foliar; Color; Imágenes digitales; Li-Cor 3000; SPAD 502.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400409

Diseño de un sistema de riego subterráneo para abatir la evaporación en suelo desnudo comparado con dos métodos convencionales
Provedor de dados: 115
Autores: Lucero-Vega,Gregorio; Troyo-Diéguez,Enrique; Murillo-Amador,Bernardo; Nieto-Garibay,Alejandra; Ruíz-Espinoza,F. Higinio; Beltrán-Morañes,F. Alfredo; Zamora-Salgado,Sergio.
Resumen El sistema de riego subterráneo es una alternativa para incrementar la productividad del agua en la agricultura, en virtud de que minimiza la evaporación superficial e incrementa la eficiencia de aportación hídrica en zona de raíz. El objetivo de este estudio fue evaluar la cantidad de agua perdida por evaporación en tres sistemas de riego, dos de ellos mediante aporte superficial y un sistema de riego subterráneo. Tres sistemas de riego se evaluaron en septiembre de 2015 y enero de 2016, mediante riego localizado en zanjas (RZ), riego subterráneo por difusores (RSD) y riego por goteo con cinta (RGC). El sistema RZ fue 1 m de zanja con 15 cm de profundidad. El RSD fue un tubo de PVC sanitario de 5.08 cm de diámetro interior y 1 m de longitud con...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigación; Aporte hídrico; Riego sub-superficial.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500487

EFECTO DEL MESOCLIMA EN LA MADURACIÓN DE UVA NEBBIOLO (Vitis vinifera) EN EL VALLE DE GUADALUPE, BAJA CALIFORNIA, MÉXICO
Provedor de dados: 115
Autores: Cabello-Pasini,Alejandro; Macias-Carranza,Víctor; Mejía-Trejo,Adán.
Resumen La fisiología de la vid (Vitis vinífera) está regulada por las condiciones climáticas de mesoescala y gran escala. El valle de Guadalupe es una cuenca vitivinícola que produce la mayoría del vino de México y presenta variaciones climáticas en mesoescala que podrían influenciar la maduración de las uvas. El objetivo de este estudio fue evaluar el efecto de las diferencias climáticas en dos zonas vitivinícolas del Valle de Guadalupe, sobre la maduración de la uva variedad Nebbiolo. Debido a la distancia con respecto a la costa, se esperaban encontrar diferencias climáticas en el valle y en la maduración de las uvas en las zonas de estudio. Durante cuatro temporadas, se evaluó concentración de sólidos solubles, acidez titulable y pH de uvas de la zona...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mesoclima; Temperatura; Nebbiolo; Valle de Guadalupe; Viticultura; Vitis vinífera.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600617

Aptitud combinatoria de líneas endogámicas para la producción de híbridos de maíz (Zea mays L.) de cruza simple en condiciones de riego
Provedor de dados: 115
Autores: Sánchez-Ramírez,Francisco J.; Mendoza-Castillo,Ma. del Carmen; Mendoza-Rodríguez†,Moisés; Castillo-González,Fernando; Cruz-Izquierdo,Serafín; Castro-Nava,Sergio; Molina-Galán†,José D.
Resumen Dado que el maíz (Zea mays L.) presenta amplia diversidad genética, en un programa de mejoramiento genético es necesario conocer los componentes de variación genética para optimizar las estrategias de aprovechamiento. La aptitud combinatoria, los efectos maternos, el tipo de acción génica de las cruzas y su potencial genético se estudiaron a través de la evaluación de las combinaciones simples entre 10 líneas (S6-S8) desarrolladas para producir híbridos de cruza simple, con riego, en Tecámac y Montecillo, Estado de México, y Mixquiahuala, estado de Hidalgo, en los Valles Altos del Centro de México. El diseño experimental fue látice simple 10×10; el análisis genético se efectuó con el modelo I del Método I de Griffing. El rendimiento medio de grano...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Efectos maternos; Componentes de variación genética; Productividad; Valles Altos del Centro de México.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400393

Estimación del volumen comercial en plantaciones de Eucalyptus urophylla con modelos de volumen total y de razón
Provedor de dados: 115
Autores: Hernández-Ramos,Jonathan; Santos-Posadas,Héctor M. De los; Valdéz-Lazalde,José R.; Tamarit-Urias,Juan C.; Ángeles-Pérez,Gregorio; Hernández-Ramos,Adrián; Méndez-Lopez,Benjamin; Peduzzi,Alicia.
Resumen Para el manejo técnico y aprovechamiento de plantaciones forestales comerciales (PFC), es fundamental el conocimiento de las relaciones funcionales entre el diámetro normal (dn) y la altura (A) con el volumen total (Vt) de un árbol, además de la proporción de distintas alturas comerciales (Ai) o diámetros mínimos (di) a lo largo del fuste con el volumen comercial (Vc). Con la hipótesis de que con tales relaciones expresadas matemáticamente es posible realizar estimaciones precisas de Vt y Vc, el objetivo fue proponer una herramienta para cuantificar el Vt y Vc en PFC de Eucalyptus urophylla procedentes de semilla y clones en el sureste mexicano a través de funciones de razón volumétrica (r). Con información dasométrica de 175 árboles de clones...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Perfil fustal; Ahusamiento; Plantaciones forestales; Distribución de productos; Eucalyptus urophylla.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500561

Dinámica de brotación y densidad básica de la madera en rebrotes de tres especies dendroenergéticas
Provedor de dados: 115
Autores: Ríos-Saucedo,Julio C.; Acuña-Carmona,Eduardo; Cancino-Cancino,Jorge; Rubilar-Pons,Rafael; Corral-Rivas,José J.; Rosales-Serna,Rigoberto.
Resumen La dinámica de brotación y la densidad básica son importantes en el manejo de especies para producción de biomasa con fines energéticos. Nuestro objetivo fue estudiar la dinámica de brotación y la densidad básica en Eucalyptus globulus Labill, E. denticulata Cook &amp; Ladiges y Acacia dealbata Link con tres densidades de plantación (5000, 10 000 y 15 000 árboles ha-1). El estudio se realizó en la región del Biobío, Chile, en tres fechas de evaluación (10, 21 y 31 meses después del corte; DC). A los 10 meses A. dealbata presentó el número mayor de rebrotes proventicios (5 a 19) en las tres densidades y luego el número disminuyó (4 a 7) a los 21 y 31 meses DC en 10 000 y 15 000 árboles ha-1. Eucalyptus denticulata y E. globulus mostraron de tres a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus globulus; Eucalyptus denticulata; Acacia dealbata; Cultivos leñosos; Monte bajo; Dendroenergía.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200215

Calibración de los modelos de pérdidas de suelo usle y musle en una cuenca forestal de México: caso El Malacate
Provedor de dados: 115
Autores: Prado-Hernández,Jorge V.; Rivera-Ruiz,Pedro; León-Mojarro,Benjamín de; Carrillo-García,Mauricio; Martínez-Ruiz,Antonio.
Resumen La cuantificación de la erosión hídrica de los suelos en cuencas hidrográficas sirve para conocer el grado de su deterioro y para implementar medidas de conservación que minimicen la pérdida del suelo. Dada la carencia de la información para cuantificar con precisión aceptable la erosión en México, es necesario estudiar su estimación con la información disponible mediante metodologías validadas con información experimental. Por tal motivo, el objetivo de este estudio fue calibrar los modelos USLE (EUPS o Ecuación Universal de la Pérdida del Suelo, por sus siglas en inglés) y MUSLE (EUPS modificada) en la microcuenca El Malacate, perteneciente a la cuenca del Lago de Pátzcuaro en Michoacán, México con información experimental de 2013. El modelo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Degradación específica; Erosión del suelo; Modelación hidrológica; Producción de sedimentos; Simulación en cuencas.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000300265

Resistance of Botrytis cinerea from strawberry (Fragaria x ananassa Duch.) to fungicides in Michoacan Mexico
Provedor de dados: 115
Autores: Álvarez-Medina,Adán; Silva-Rojas,Hilda V.; Leyva-Mir,Santos G.; Marbán-Mendoza,Nahum; Rebollar-Alviter,Ángel.
Abstract Gray mold caused by Botrytis cinerea Pers. is one of the most important diseases of strawberry (Fragaria x ananassa Duch.), and fungicide resistance is a concern. The objective of this research was to evaluate the sensitivity of B. cinerea isolates to the fungicides iprodione and thiophanate-methyl in two strawberry-producing areas in Mexico. Sixty-two B. cinerea isolates collected from strawberry fruits from Maravatio Valley (MV) and Zamora-Jacona Valley (ZJ) in Michoacan, Mexico, were used to determine the sensitivity distribution based on mycelium growth (MG) and conidial germination (CG). Each monosporic isolate was grown in 4 plates containing media amended with 0, 0.1, 0.5, 1, 10, 50 and 100 µg mL-1 of iprodione and 0, 0.1, 10, 100, 1000 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungicide resistance; Benzimidazole; Dicarboximides.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000700783

Caracterización de sistemas productivos de ganado bovino en la región indígena XIV Tulijá-Tseltal-Chol, Chiapas, México
Provedor de dados: 115
Autores: Velázquez-Avendaño,J. Antonio; Perezgrovas-Garza,Raúl.
Resumen Este estudio se realizó en un territorio predominantemente indígena del sureste mexicano, en la región económica XIV Tulijá-Tseltal-Chol en Chiapas, con el propósito de reconocer los sistemas productivos de ganado bovino vigentes en la región. Para ello se aplicaron 318 entrevistas recorriendo los municipios que componen esta región habitada principalmente por las etnias mayenses: Tseltal, Chol, y Tsotsil, además de mestizos y descendientes europeos asentados en Sabanilla, Chilón, Yajalón, Tila y Salto de Agua. Primero se preseleccionaron 11 variables de 48 disponibles eligiendo nueve a partir del análisis de correlación ji-cuadrada Pearson, y luego se procesaron en análisis multivariado. Con los resultados se establecieron cuatro sistemas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Análisis multivariado; Biodiversidad; Conglomerados; Cultura.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000300285

Tasa de evapotranspiración del cultivo de la vid y su relación con la de referencia del método FAO Penman-Monteith
Provedor de dados: 115
Autores: Zermeño-González,Alejandro; Melendres-Alvarez,A. Isain; Fuerte-Mosqueda,L. Alberto; Munguia-López,J. Plutarco; Ibarra-Jiménez,Luis.
Resumen Una oportuna y adecuada programación del riego en la agricultura requiere información correspondiente a la tasa de ET diaria de los cultivos establecidos o por establecer en las diferentes regiones agrícolas. Por lo tanto, el objetivo de este estudio fue determinar la tasa diaria de ET actual (ETa) del cultivo de la vid, con la ET de referencia (ETr) obtenida con el método FAO Penman Monteith y su comparación con la ETa del cultivo obtenida con un sistema de covarianza eddy. El estudio se realizó en un viñedo de la Vinícola San Lorenzo, Parras, Coahuila, durante el ciclo de producción de la vid (Vitis vinífera cv Shiraz) de abril a septiembre de 2014. Dentro del predio se delimitaron dos secciones de 5.2 ha, y en cada una se instalaron los sensores...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ET de referencia; Covarianza eddy; Coeficiente de cultivo; Vitis vinífera.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100001

Evaluación de riego deficitario controlado sobre la producción de kiwi (Actinidia deliciosa)
Provedor de dados: 115
Autores: Lagos,Luis O.; Lama,Waldo; Hirzel,Juan; Souto,Camilo; Lillo,Mario.
Resumen El riego deficitario controlado (RDC) es una estrategia de manejo donde se aplica agua según las etapas fenológicas del cultivo. Como consecuencia, condiciones diferentes del manejo del riego pueden producir cambios importantes en la producción, calidad de la fruta y una disminución del volumen de agua utilizado. El objetivo de esta investigación fue evaluar el efecto de RDC en la producción y calidad del kiwi (Actinidia deliciosa) Hayward, en Chile. Durante los ciclos de producción de 2009 al 2012 se aplicaron cuatro periodos de restricción hídrica: 1) desde 30 d y hasta 10 d antes de la floración, 2) cuando el fruto alcanzó más de 60 % del peso final, 3) cuando el fruto alcanzó más de 70 % del peso final y 4) cuando el fruto alcanzó más de 80 %...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrés hídrico; Calidad; Agua-producción; Ahorro agua y energía.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400359

Pupación, emergencia de adultos y oviposición de comadia redtenbacheri (Lepidoptera: Cossidae) en vivero
Provedor de dados: 115
Autores: Delgado-Tejeda,Isis; Llanderal-Cázares,Celina; Miranda-Perkins,Kalina; Santos-Posadas,Héctor M. De los.
Resumen Para determinar las condiciones para el establecimiento de cultivos en vivero de Comadia redtenbacheri (Hammerschmidt) se hicieron pruebas de producción del insecto. En macetas con suelo franco y cinco plantas de agave, de aproximadamente tres años, se liberaron larvas, con peso &gt;0.30 g, se indujo la pupación y emergencia de los adultos. Las larvas se colocaron a densidades de 200, 400 y 600 por maceta con tres repeticiones distribuidas al azar. Para cuantificar la emergencia de los adultos y oviposición sobre los agaves se contaron las exuvias pupales y se pesaron las masas de huevos. El número de adultos emergidos fue diferente: 15.9 % en las macetas con 600 larvas, 1.1 % con 400 larvas y 5.3 % con 200 larvas (p≤0.05). Las masas ovipositadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Comadia redtenbacheri; Agave salmiana; Gusano rojo de maguey; Entomofagia; Cría de insectos.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400447

Influencia de las especies leñosas en la dinámica de arvenses en sistemas agroforestales en Yucatán, México
Provedor de dados: 115
Autores: Tzuc-Martínez,Rodrigo; Casanova-Lugo,Fernando; Caamal-Maldonado,Arturo; Tun-Garrido,Juan; González-Valdivia,Noel; Cetzal-Ix,William.
Resumen Los factores limitantes para la producción de maíz en Yucatán, México son la reducción en el rendimiento y aumento constante de especies arvenses. Una estrategia para enfrentar esos problemas es desarrollar esquemas productivos diversificados, como los sistemas agroforestales (SAF). En nuestro estudio se determinó la dinámica de la cobertura y biomasa de arvenses en un SAF integrado por árboles forrajeros y maíz durante dos ciclos de cultivo (CC). Para ello se evaluaron Leucaena leucocephala, Guazuma ulmifolia, y Moringa oleifera asociadas a maíz, y un monocultivo de esta especie en una parcela, con un diseño de bloques completos al azar y tres repeticiones. La cobertura, biomasa, riqueza y densidad de arvenses se midieron al inicio, a la mitad y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arvenses; Sistemas agroforestales; Cobertura; Biomasa; Supresión.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000300315

Imbibición, viabilidad y vigor de semillas de cuatro especies de Opuntia con grado distinto de domesticación
Provedor de dados: 115
Autores: Monroy-Vázquez,María E.; Peña-Valdivia,Cecilia B.; García-Nava,José R.; Solano-Camacho,Eloy; Campos,Huitziméngari; García-Villanueva,Eduardo.
Resumen En la germinación de las semillas influyen la capacidad de imbibición, la viabilidad y el vigor; estas características ayudarían a explicar la germinación poco exitosa del género Opuntia. El objetivo de este estudio fue evaluar la imbibición, la viabilidad y el vigor de las semillas de nueve variantes de O. streptacantha, O. hyptiacantha, O. megacantha y O. ficus-indica y su relación con la biomasa y tiempo de recolecta. La hipótesis fue que la imbibición, viabilidad y vigor de las semillas en Opuntia son bajos e independientes de la especie y el tiempo de recolección. La imbibición se cuantificó como ganancia de humedad respecto al peso original de las semillas. La viabilidad y el vigor de los embriones se determinaron con la prueba de tetrazolio....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproducción sexual; Biomasa de la semilla; Imbibición; Vigor; Nopal; Opuntia.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100027

Indicadores de calidad de suelo para evaluar su fertilidad
Provedor de dados: 115
Autores: Estrada-Herrera,I. Rayo; Hidalgo-Moreno,Claudia; Guzmán-Plazola,Remigio; Almaraz Suárez,J. José; Navarro-Garza,Hermilio; Etchevers-Barra,Jorge D.
Resumen La Mixteca Alta Oaxaqueña, México (MAO), presenta niveles moderados a graves de degradación de suelo. La erosión hídrica y eólica son las principales causas de esa degradación, con pérdidas de suelo entre 50 y 200 Mg ha-1 año-1 y en algunas zonas puede ser mayor. Los indicadores de calidad (ICS) son herramientas útiles para evaluar el estado de la fertilidad del suelo y su degradación. El objetivo de este estudio fue generar indicadores de calidad (univariados) cuyos valores, comprendidos dentro de una escala única, permitan evaluar la fertilidad de suelos de la MAO y situarlos en un mapa temático de degradación. Las hipótesis fueron: 1) los atributos evaluados en este estudio funcionan como ICS y 2) los valores de los ICS que varían dentro de una...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Indicadores de calidad de suelo; Suelos degradados; Fertilidad suelos; Mixteca Alta Oaxaqueña.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000800813

Efecto de Fusarium circinatum en la germinación y crecimiento de plántulas de Pinus greggii en tres sustratos
Provedor de dados: 115
Autores: García-Díaz,Silvia E.; Aldrete,Arnulfo; Alvarado-Rosales,Dionicio; Cibrián-Tovar,David; Méndez-Montiel,José T.; Valdovinos-Ponce,Guadalupe; Equíhua-Martínez,Armando.
Resumen La enfermedad de la secadera afecta en pre-emergencia, post-emergencia y causa constricción del tallo y pudrición de la raíz en plantas desarrolladas en viveros forestales. Los objetivos de este estudio fueron identificar morfológica y molecularmente la especie de Fusarium que afecta al vivero de Atlangatepec, Tlaxcala, que causa secadera y pudrición de raíz en Pinus greggii Engelm., evaluar su efecto en la germinación de semillas en tres sustratos y analizar la incidencia y patogenicidad en plántulas en desarrollo. El hongo Fusarium sp. se aisló de plántulas enfermas, se purificó e identificó por su morfología y molecularmente como F. circinatum Nirenberg &amp; O’Donnell. Los sustratos fueron turba de musgo, perlita y vermiculita (S1), aserrín,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Viveros; Incidencia; Turba de musgo; Corteza de pino y aserrín.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000800895

Crecimiento y rendimiento maderable en plantaciones de Pinus chiapensis (Martínez) Andresen
Provedor de dados: 115
Autores: Fierros-Mateo,Reynol; Santos-Posadas,Héctor M. De los; Fierros-González,Manuel A.; Cruz-Cobos,Francisco.
Resumen Un Sistema de Crecimiento y Rendimiento Maderable (SCRM) es un conjunto de modelos que describen cuantitativamente el crecimiento y rendimiento de los rodales a través del tiempo. El objetivo del presente estudio fue construir un SCRM como herramienta de apoyo para la toma de decisiones en el manejo de plantaciones de Pinus chiapensis (Martínez) Andresen. Los datos se tomaron de 44 sitios establecidos en 2013 en Tlatlauquitepec, Puebla, México, y medidos nuevamente en 2014. Los componentes del sistema se generaron mediante el método de diferencia algebraica. El ajuste se realizó con la técnica de Regresión Aparentemente no Relacionada (SUR) como un sistema de ecuaciones simultáneas. Para la altura dominante, el modelo de Hossfeld IV polimórfico fue...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diferencia algebraica; Pinus chiapensis (Martínez) Andresen; Altura dominante; Tabla de rendimiento; Predicción; Proyección.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200201

Producción de látex en el tablero alto de árboles de hule (Hevea brasiliensis) estimulado con ácido-2-cloroetil-fosfónico
Provedor de dados: 115
Autores: Barragán-Hernández,Rodolfo; Domínguez-Domínguez,Marivel; Ramírez-Valverde,Gustavo; Ortiz-García,Carlos F.; Martínez-Zurimendi,Pablo.
Resumen En las plantaciones de hule (Hevea brasiliensis Müell. Arg.) el tallo del árbol se divide para su aprovechamiento en partes longitudinales simétricas, denominadas “tablero de pica”. El tablero bajo inicia a 1.0 m sobre el nivel del suelo, en forma descendente y el tablero alto a 1.5 m sobre el suelo, en forma ascendente. En México las plantaciones se aprovechan por 25 años, pero el 30 % de ellas puede aprovecharse más tiempo, usando el tablero alto. Para estas plantaciones se aplica el corte de los vasos laticíferos (pica) ascendente en el tablero alto para alargar el ciclo productivo del árbol. El objetivo de este estudio fue conocer la producción de hule del tablero alto en plantaciones en edad productiva, estimulando con ethrel al 5 %, en tres...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea brasiliensis; Frecuencia de pica; Ethefón.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200229

Proyección explícita e implícita del rendimiento maderable de plantaciones forestales comerciales de Pinus patula Schiede ex Schltdl. et Cham.
Provedor de dados: 115
Autores: Parra-Piedra,José P.; Santos-Posadas,Héctor M. De los; Fierros-González,Aurelio M.; Valdez-Lazalde,José R.; Romo-Lozano,José L.
Resumen En Zacualpan, Veracruz, México, existen 3,500 ha de plantaciones forestales comerciales de Pinus patula, pero hasta el momento no se han realizado evaluaciones de crecimiento que permitan programar adecuadamente la cosecha. El objetivo del estudio fue evaluar el crecimiento y rendimiento maderable, compuesto por un sistema explícito y uno implícito con distribución diamétrica, ambos construidos con datos de parcelas permanentes de medición forestal. La hipótesis propone que parcelas de observación permanente, de diferentes edades entre ellas y remedidas en el tiempo, permitirán obtener un sistema de crecimiento y rendimiento maderable proyectado en forma explícita e implícita. El primer sistema consta del modelo no lineal en altura dominante tipo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Índice de sitio; Clase diamétrica; Weibull; Rendimiento.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400455

Condiciones para modelar el riego por gravedad con propiedades hidrodinámicas equivalentes del suelo
Provedor de dados: 115
Autores: Zataráin,Felipe; Fuentes,Carlos; Rendón,Luis.
Resumen Para diseñar el riego por gravedad es común hacer mediciones durante un evento de riego y deducir valores promedio o efectivos de la infiltración. Pero, la variabilidad espacial de los suelos puede ser de tal magnitud que la representatividad de estos valores puede cuestionarse. La hipótesis de este estudio fue que utilizar los valores efectivos de las propiedades hidrodinámicas del suelo es válido en ciertas condiciones de riego por gravedad. El objetivo fue analizar esas propiedades, con base en información experimental de infiltración y avance del riego en melgas, a través de la generación de campos correlacionados de la conductividad hidráulica con un método fundamentado en el análisis espectral. El análisis se complementó con la modelación de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infiltración; Variabilidad espacial; Campos correlacionados.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000300245

Evaluación de indicadores de bienestar animal en guajolote mixto autóctono (M. gallopavo) en confinamiento y libertad en Villaflores Chiapas, México
Provedor de dados: 115
Autores: Cigarroa-V.,Francisco A.; Herrera-Haro,José G.; Ruiz-Sesma,Benigno; Ortega-Cerrilla,Ma. Esther; Cuca-García,Juan M.; Campo-Chavarrí,José L.; Rojas-Martínez,Reina I.; Lemus-Flores,Clemente.
Resumen Los sistemas de producción avícola en pequeña escala propician un mejor bienestar animal, cuya evaluación puede realizarse usando índices de estrés como asimetría fluctuante (AF), inmovilidad muscular (IM) y el cociente entre heterófilos/linfocitos (H:L). La estabilidad en el desarrollo del animal es consecuencia de perturbaciones acumuladas durante su vida. El objetivo de esta investigación fue evaluar AF, IM y H:L como indicadores de bienestar del guajolote mixto autóctono (M. gallopavo) en un sistema de producción familiar en la región Fraylesca, Chiapas, México. La duración de la prueba fue 67 d, con 7 d de adaptación, y se usaron 39 guajolotes de 7 meses de edad con alojamiento tradicional (en libertad) o jaulas (confinamiento). El análisis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asimetría fluctuante; Bienestar animal; Guajolote autóctono.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000800833

Identification of variables correlated with chilling injury in Pitahaya (Hylocereus undatus Haworth)
Provedor de dados: 115
Autores: Quiroz-González,Beatriz; Corrales-García,J. Joel E.; Colinas-León,M. T. Beryl; Ybarra-Moncada,M. Carmen.
Abstract The pitahaya (Hylocereus undatus) is highly perishable and susceptible to chilling injury (CI) The objective of this study was to measure a set of biochemical, physiological, physical-chemical and physical variables in gradually chilling injured pitahaya fruits and assess the degree of correlation of each one with this damage. Pitahayas were stored at 2 or 7±1 °C and 90±6 % RH for up to 30 d, and then held at 22±4 °C and 60±8 % RH for up to 7 d. A visual evaluation of CI was conducted using a five point hedonic scale after storage and transfered to 22 °C. Titratable acidity (TA), total soluble solids, TSS/TA ratio, superoxide dismutase activity (SOD), glutathione activity (GR), piruvate decarboxylase (PDC), alcohol deshydrogenase activity (ADH),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stress; Pitahaya; Postharvest; Refrigerated storage; Chilling injury.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200153

Análisis de la estabilidad del volumen del pan de trigos harineros (Triticum aestivum L.) mexicanos de secano
Provedor de dados: 115
Autores: Espitia-Rangel,Eduardo; Villaseñor-Mir,H. Eduardo; Martínez-Cruz,Eliel; Santa-Rosa,R. Hortelano; Lozano-Grande,Azalia; Limón-Ortega,Agustín.
Resumen El volumen de pan es la característica más importante en la calidad panadera del trigo harinero (Triticum aestivum L.) y debe mantenerse en condiciones ambientales diversas, lo cual es necesario considerar en el mejoramiento genético. La evaluación de la calidad en ambientes diferentes es complicada, por ello el objetivo de este estudio fue determinar la estabilidad del volumen de pan de variedades de trigo para secano desde un conjunto de datos desbalanceados; y determinar si el procedimiento MIXED del SAS puede ser una herramienta en la selección de genotipos estables. Con experimentos de campo, en ambientes de secano y al manejo de muestras en laboratorio se obtuvo un conjunto de datos desbalanceados que se analizaron con modelos estadísticos en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trigo de secano; Trigo harinero; Volumen de pan; Estabilidad; Modelos mixtos.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000700743

Modelando riesgo de ingreso: un enfoque de cópulas
Provedor de dados: 115
Autores: Martínez-Damián,Miguel Á.; Brambila-Paz,José de J.; González-Estrada,Elizabeth.
Resumen La aleatoriedad de precio y rendimiento afectan al ingreso en la actividad agrícola; por tanto, un administrador de riesgo requiere tomar en cuenta simultáneamente ambas fuentes de incertidumbre en la administración de riesgo. Con un enfoque de funciones cópulas el objetivo de este estudio fue modelar el riesgo de ingreso por hectárea en maíz para los estados de Sinaloa, Estado de México, Jalisco y Chiapas. La hipótesis fue que se puede usar la dependencia entre precio y rendimiento en la administración de siniestros. Los resultados mostraron que el número de siniestros de ingreso por debajo del percentil 5 % es menor bajo la modelación de una cópula normal o una cópula t, comparada con los siniestros de precio o rendimiento separado.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dependencia; Riesgo sistémico; Riesgo de precio.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500581

CURVAS INTENSIDAD-DURACIÓN-FRECUENCIA DE TORMENTAS DE CORTA DURACIÓN EN LA CUENCA DEL RÍO SEGURA, ESPAÑA
Provedor de dados: 115
Autores: Pérez-Sánchez,Julio; Senent-Aparicio,Javier.
Resumen Las intensidades de tormentas de duración corta (inferiores a 60 min) en los climas semiáridos son importantes para el diseño y cálculo de obras de ingeniería y la planificación hidrológica porque suelen provocar las mayores crecientes en estas zonas. El objetivo de este estudio fue obtener curvas de Intensidad-Duración-Frecuencia de tormentas para la cuenca del río Segura, situada en el sureste de España, y determinar cuáles de las funciones de distribución de probabilidad (FDP) se ajustan mejor a los datos de las 60 estaciones pluviográficas en la cuenca. Para cada una de las estaciones se obtuvieron las intensidades máximas anuales de tormenta en los intervalos de tiempo de 15, 30 y 60 min para un período común de 21 años. Las FDP estudiadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eventos extremos; Análisis probabilístico; Curvas IDF.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600607

Rooting and acclimatization of Apuleia leiocarpa plantlets
Provedor de dados: 115
Autores: Haygert-Lencina,Kelen; Antônio-Bisognin,Dilson; Kielse,Paula; Pimentel,Nathalia.
Abtract Apuleia leiocarpa is an endangered tree species with high quality timber. Propagation by seed is difficult due to irregular fruiting and water-impermeable tegument, so asexual propagation is a promising alternative. This study aimed to evaluate in vitro and ex vitro rooting of A. leiocarpa and acclimatization of micropropagated plantlets. The hypothesis was that type of explant, indolebutyric acid (IBA) concentration and substrate influence the induction of adventitious roots in apuleia. For in vitro rooting, nodal segments and micro-cuttings were grown in Wood Plant Medium (WPM) with 0, 4.9, 9.8, 14.7 and 19.6 μM IBA. Compositions of commercial substrate + vermiculite + coarse sand and commercial substrate + vermiculite, in equal proportions, were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apuleia leiocarpa; Indolebutyric acid; Micropropagation; Micro-cuttings; Substrate composition.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000800909

Obtención de trayectorias subóptimas de temperatura con el método de Monte Carlo para la maximización de la producción de tomate (Solanum lycopersicum L.) en invernadero
Provedor de dados: 115
Autores: Moreno-Ramos,Eduardo; Morales-Díaz,América; Juárez-Maldonado,Antonio; Alba-Romenus,Karim de; Benavides-Mendoza,Adalberto.
Resumen El objetivo de este estudio fue obtener una trayectoria subóptima de la temperatura requerida para maximizar la producción de peso fruto (W  F )y fruto cosechado (W  HF ) de tomate (Solanum lycopersicum L.) mediante el método de Monte Carlo. Así se plantea un problema de optimización dinámica basada en un modelo dinámico no lineal del crecimiento del cultivo en condiciones de invernadero. En la solución de este problema se utilizan restricciones en la temperatura de 15 °C a 30 °C en un intervalo; éste que representa el intervalo medio de temperatura durante el día en la ciudad de Saltillo, se realiza la optimización considerando horizontes de predicción de 15 min en un intervalo de 120 d después del transplante (ddt) y usando un modelo dinámico...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modelo dinámico de crecimiento de tomate; Maximización de la producción; Método de Monte Carlo.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000800849

TOTAL PHENOLIC CONTENT AND ANTIOXIDANT CAPACITY OF NON-NATIVE WINE GRAPES GROWN IN ZACATECAS, MEXICO
Provedor de dados: 115
Autores: Franco-Bañuelos,Ambrosio; Contreras-Martínez,Cristina S.; Carranza-Téllez,José; Carranza-Concha,José.
Abstract The production of non-native wine grapes (Vitis vinifera L.) in Zacatecas, Mexico has increased in recent years; however, information about their chemical composition is not yet available. Polyphenols are associated with the antioxidant capacity of grapes due to their beneficial health effects. Therefore, the aim of this study was to evaluate the total phenolic content (TPC) and the antioxidant capacity (AC) of non-native wine grapes grown in Zacatecas, México. The AC and TPC of 4 white grape varieties and 4 red grape varieties were analyzed. Experimental design was completely randomized with three replications and the data was analyzed using ANOVA and compared with Tukey test (p≤0.05). Pearson’s correlation and linear regression were calculated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wine grape cultivars; Phytochemicals; Antioxidant activity.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600661

Extracción de compuestos bioactivos de Pitaya Roja (Stenocereus stellatus) aplicando pretratamientos con microondas, ultrasonido y enzimáticos
Provedor de dados: 115
Autores: Pérez-Loredo,María G.; Hernández-De Jesús,Lourdes; Barragán-Huerta,Blanca E.
Resumen La demanda de aditivos naturales en alimentos ha aumentado en años recientes. La pitaya roja (Stenocereus stellatus) se puede usar como fuente de betalaínas y compuestos fenólicos, pero no existen informes sobre la extracción de estos compuestos usando estos frutos. Por ello, el objetivo de este estudio fue evaluar el efecto de los pretratamientos por microondas, ultrasonido y enzimáticos en el aumento de betacianinas (Bc), betaxantinas (Bx), betalaínas totales (BT), compuestos fenólicos totales (CFT) y la capacidad antioxidante (CA) en los extractos de pulpa con y sin semillas del fruto de S. stellatus. El diseño experimental fue completamente al azar y los resultados se analizaron mediante un ANDEVA y un análisis de componentes principales (ACP)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extracción; Stenocereus stellatus; Betalaínas; Ultrasonido; Microondas; Enzimáticos.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200135

Efecto de genotipo y ambiente en la calidad fisicoquímica de variedades mexicanas de Hibiscus sabdariffa L.
Provedor de dados: 115
Autores: Sánchez-Feria,César; González-Hernández,Víctor A.; Salinas-Moreno,Yolanda; Cruz-Huerta,Nicacio.
Resumen En este estudio se evaluaron 53 genotipos de jamaica (Hibiscus sabdariffa L.), con coloración roja contrastante en sus cálices deshidratados, cada uno de ellos crecidos en una región productora de Colima, Guerrero, Nayarit, Oaxaca y Puebla, estados con tradición en el cultivo de jamaica en México. El objetivo fue cuantificar los efectos de los factores genotipo, ambiente y su interacción G×A, en las variables de color (luminosidad, tonalidad y saturación), contenido total de antocianinas (CTA), fenoles solubles totales (FST), pH y acidez titulable (AT), en cálices deshidratados y extractos acuosos. Los tres factores tuvieron efectos significativos (p≤0.01) en la calidad de los cálices y extractos de jamaica, pero el efecto del genotipo fue más...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jamaica; Cálices; Color; Contenido total de antocianinas; Compuestos fenólicos solubles totales; Acidez titulable.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500525

Efecto del ácido salicílico en el crecimiento, estatus nutrimental y rendimiento en maíz (Zea mays)
Provedor de dados: 115
Autores: Tucuch-Haas,Cesar; Alcántar-González,Gabriel; Trejo-Téllez,Libia I.; Volke-Haller,Hugo; Salinas-Moreno,Yolanda; Larqué-Saavedra,Alfonso.
Resumen El ácido salicílico (AS) participa en diversos procesos fisiológicos y bioquímicos en algunas especies de plantas, favoreciendo el rendimiento. En el cultivo de maíz (Zea mays) estos procesos también son favorecidos, pero se conoce poco sobre los efectos causados en la bioproductividad. Por tal razón, el efecto de AS aplicado a las hojas de maíz se evaluó en el crecimiento, el estatus nutrimental y la producción de grano, de la variedad local Xmejen-nal, estado de Yucatán, México. Dos experimentos independientes se realizaron con arreglo de bloques completos al azar, en condiciones de campo, usando dos concentraciones de AS (0.1 y 1 µM) y agua destilada como testigo. Las soluciones se asperjaron a plántulas de 7 d de edad, durante 7 d. Los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Biomasa; Mazorca; Nitrógeno; Fósforo; Potasio.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000700771

Diversidad de maíces en Pátzcuaro, Michoacán, México, y su relación con factores ambientales y sociales
Provedor de dados: 115
Autores: Orozco-Ramírez,Quetzalcóatl; Odenthal,Jorge; Astier,Marta.
Resumen La diversidad de maíces en la región del Lago de Pátzcuaro, Michoacán, México, incluye 11 de las 27 razas de maíz en el estado de Michoacán. El presente estudio se realizó de 2012 a 2015 con el objetivo de explorar la distribución espacial de la diversidad de maíces y los factores ambientales y sociales a los que está asociada. La hipótesis fue que la distribución de la diversidad es heterogénea en la región, la diversidad mayor está en las localidades que practican agricultura tradicional, la cual está asociada con la presencia de agricultores indígenas y diversidad mayor de ambientes agrícolas. Recolectas de maíz y entrevistas a agricultores se realizaron con el método etnobotánico. La información obtenida fue sobre manejo del cultivo y variables...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays subsp. mays; Distribución de la diversidad; Grupos indígenas; Purhépechas; Razas de maíz; Modelos lineales generalizados.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000800867

CRECIMIENTO DEL GIRASOL (Helianthus annuus L.) EN FUNCIÓN DE LA SALINIDAD DEL AGUA DE RIEGO CON FERTILIZACIÓN NITROGENADA
Provedor de dados: 115
Autores: Santos,João Batista dos; Centeno,Cruz Ramón Marenco; Azevedo,Carlos Alberto Vieira de; Gheyi,Hans Raj; de-Lima,Geovani Soares; de-Lira,Vanda Maria.
Resumen El agua es un recurso para la agricultura, urbano e industrial y es insuficiente en zonas con clima semiárido en el nordeste de Brasil. El agua salina debe considerarse una alternativa para la expansión de las zonas agricolas con riego. El objetivo de este estudio fue evaluar el efecto del riego con agua salina y fertilización nitrogenada en el crecimiento del girasol (Helianthus annuus L.) cv. EMBRAPA 122-V2000. El estudio se desarrolló en un invernadero de la Universidad Federal de Campina Grande, Paraiba, Brasil, entre abril y julio de 2012. El diseño experimental fue totalmente al azar con tres repeticiones, en arreglo factorial 5×5; niveles de salinidad del agua de riego con conductividad eléctrica (ECa) de 0.7, 1.7, 2.7, 3.7 y 4.7 dS m-1 (25...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agua salina; Estrés salino; Dosis de nitrógeno.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600649

Especies de “gallina ciega” (Coleoptera: Melolonthidae) en el cultivo de ajonjolí (Sesamum indicum L.) en Sinaloa, México
Provedor de dados: 115
Autores: Lugo-García,G. Antonio; Morón,M. Ángel; Aragón-Sánchez,Miguel; Reyes-Olivas,Álvaro; Sánchez-Soto,B. Heleodoro; Sauceda-Acosta,C. Patricio.
Resumen Con el fin de identificar las especies de Melolonthidae “gallina ciega” asociadas al cultivo de ajonjolí (Sesamum indicum L.) y su distribución estacional, en El Fuerte, Sinaloa, México, se realizaron recolectas mensuales de larvas en muestras de suelo de 30x30x30 cm y de adultos con una trampa de luz negra, instalada en un lote de 3 ha con ajonjolí de secano, en el ciclo agrícola 2012. En suelo se recolectaron 265 larvas, representantes de cinco subfamilias, seis tribus, siete géneros y 15 especies de las familias Melolonthidae, Cetoniidae e Hybosoridae. En el cultivo coexisten larvas saprófagas de Hybosorus illigueri Reiche, Ligyrus sallei (Bates) y Euphoria leucographa Gory y Percheron, junto con larvas de cuatro especies de Phyllophaga y dos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Melolonthidae; Gallina ciega; Ajonjolí.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000700799

Response of Tunisian durum (Triticum turgidum ssp. durum) and bread (Triticum aestivum L.) wheats to water stress
Provedor de dados: 115
Autores: Ayed,Sourour; Rezgui,Mohsen; Othmani,Afef; Rezgui,Mounir; Trad,Hiba; Silva,Jaime A. Teixeira-da; Ben Younes,Mongi; Ben Salah,Hamadi; Kharrat,Mohamed.
Abstract Wheat is a staple crop in Tunisia, but little is known about the response of Tunisian durum wheat (Triticum turgidumssp.durum) and bread wheat (Triticum aestivum L.) to water stress. In semi-arid regions, where cereals are concentrated, grain yield is subject to water deficit especially due to variability in rainfall. Therefore, the objective of this study was to evaluate the response to water stress of three durum wheat (Mâali, Nasr and Salim) and two bread wheat (Tahent and Utique) varieties. The experimental design was a complete randomized block, water treatments were rainfed conditions (T0) and irrigation applied at the tillering and flowering stages (T1, control) with three replications per treatment, and data was analyzed by ANOVA and Tukey...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water stress; Durum wheat; Bread wheat; Grain yield; Yield components.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000100013

CONTROL DE LA FUSARIOSIS VASCULAR DEL GARBANZO (Cicer arietinum L.) POR MICROORGANISMOS NATIVOS DE SINALOA, MÉXICO
Provedor de dados: 115
Autores: Oliva-Ortiz,Luz del C.; Velázquez-Alcaraz,Teresa de J.; Sosa-Pérez,Rogelio; Partida-Ruvalcaba,Leopoldo; Díaz-Valdés,Tomás; Arciniega-Ramos,Julio; López-Orona,Carlos A.
Resumen La fusariosis vascular del garbanzo (Cicer arietinum L.) aumenta debido a la dificultad para controlarla. El control químico disminuye la biodiversidad y contamina el ambiente, por lo cual se deben desarrollar medidas sustentables para limitar la enfermedad. Por lo tanto, el objetivo de este estudio fue determinar el potencial de cepas bacterianas y fúngicas, nativas de Sinaloa, como agentes biocontrol de esta enfermedad en plantas de garbanzo cultivadas en invernadero. La hipótesis fue que las cepas bacterianas y fúngicas nativas son una alternativa para controlar de la fusariosis vascular del garbanzo porque inhiben Fusarium oxysporum f. sp. ciceris. La inhibición de las cepas de control biológico se evaluó sobre el crecimiento radial de Fusarium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Control biológico; Cepas nativas; Bacillus; Trichoderma; Pseudomonas; Fusarium oxysporum f. sp. ciceris.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600683

Implicaciones de las prácticas agropecuarias urbanas y rurales sobre la transmisión de la leptospirosis
Provedor de dados: 115
Autores: Hernández-Rodríguez,Patricia; Gómez,A. Patricia; Villamil,L. Carlos.
Resumen Las modificaciones en las prácticas agropecuarias y las condiciones climáticas y geográficas del trópico, asociadas con una amplia diversidad biológica, favorecen la propagación de enfermedades, la aparición de nuevos patógenos, o la reaparición de algunos ya controlados. Por lo tanto, y debido a que la leptospirosis es una zoonosis emergente asociada con inundaciones en zonas urbanas y rurales, que afecta mínimo 160 especies animales, y que el agua es un vehículo importante de transmisión, es necesario un trabajo interdisciplinar que minimice su presentación, y el impacto sobre la salud humana, animal y sobre el ecosistema (“Una Salud”). Por consiguiente, el objetivo de este ensayo fue analizar las implicaciones de las prácticas agropecuarias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultura urbana y rural; Limitantes de salud; Leptospirosis; Una salud.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000700725

Cuantificación emergética ambiental en la producción de Lombricompost
Provedor de dados: 115
Autores: Zavala-Reyna,Andrea; Bautista-Olivas,A. Laura; Alvarado-Ibarra,Juana; Velázquez-Contreras,L. Eduardo; Peña-León,Derek.
Resumen Los estudios de mercado tradicionales sobre lombricompost incluyen análisis de costo-beneficio sin considerar variables ambientales, por lo que no representan el valor real de los impactos generados en estos procesos. La elaboración de lombricompost puede afectar al medioambiente si durante este proceso se consumen más recursos que los beneficios proporcionados. El objetivo de esta investigación fue determinar la emergía ambiental y el contenido de materia orgánica (MO), fósforo (P) y potasio (K) en la producción de lombricompost excretas bovinas, cunícolas y porcinas. El estudio se realizó en el campus Inconfidentes, Instituto Federal de Educación, Ciencia y Tecnología del Sur de Minas Gerais- Brasil de noviembre 2014 a enero 2015. La hipótesis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Indicadores emergéticos; Compost bovina; Cunícula y porcina; Sostenibilidad; Síntesis de emergía.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500543

Semilla de linaza (Linum usitatissimum) en dietas de cerdos para modificar la composición lipídica de la carne
Provedor de dados: 115
Autores: Soni-Guillermo,Eutiquio; Figueroa-Velasco,José L.; Sánchez-Torres,María T.; Martínez-Aispuro,José A.; Cordero-Mora,José L.; Hernández-Cázares,Aleida S.; Copado-Bueno,José Ma. F.
Resumen La semilla de linaza (Linum usitatissimum) tiene alta concentración de ácidos grasos (AG) omega 3, los cuales, al ser incorporados a las dietas de cerdos en engorda pueden mejorar la composición lípidica de la carne. El objetivo de este estudio fue evaluar el efecto de la concentración de semillas de linaza en la respuesta productiva de cerdos en finalización, perfil de AG, características de la canal y propiedades fisicoquímicas de la carne. Los tratamientos fueron seis concentraciones (0, 2, 4, 6, 8 y 10 % BS) de linaza molida. Las unidades experimentales fueron 48 cerdos machos castrados, híbridos (LandraceXYorkshireXPietrain) con peso inicial de 50.00±5.00 kg, evaluados durante ocho semanas y en dos etapas: de 50-75 y 75-100 kg de PV. El diseño...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Respuesta productiva; Características de la canal; Α-linolénico.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000700709

Sustratos forrajeros y de anidación de la hormiga escamolera (Liometopum apiculatum Mayr, Himenoptera: Formicidae) en Villa González Ortega, Zacatecas, México
Provedor de dados: 115
Autores: Rafael-Valdez,Javier; Tarango-Arambula,Luis A.; Ugalde-Lezama,Saúl; Lozano-Cavazos,Eloy A.; Ruíz-Vera,Víctor M.; Bravo-Vinaja,Ángel.
Resumen En Zacatecas, México, la hormiga escamolera (Liometopum apiculatum Mayr) (Himenoptera: Formicidae) es importante ecológica y socioeconómicamente. Esta especie y su actividad forrajera se han estudiado poco. Los objetivos de este estudio fueron determinar la relación entre la distancia y el número de caminos con el sustrato forrajero de L. apiculatum e identificar el sustrato forrajero, de anidación y su esfuerzo de forrajeo. Las hipótesis fueron: 1) no hay relación directa entre la distancia y el número de caminos con el sustrato forrajero de la hormiga escamolera y 2) el uso de los sustratos es homogéneo. De junio a agosto de 2014 se realizó un muestreo diario (90 d) con recorridos de campo de 7:00 a 14:00 h en el hábitat de la hormiga. Con los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecto; Hábitat; Zonas áridas; Distancia de forrajeo; Conservación.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000700755

Producción de pimiento morrón (Capsicum annuum L.) en ciclos cortos
Provedor de dados: 115
Autores: Sánchez del Castillo,Felipe; Moreno-Pérez,Esaú C.; Reséndiz-Melgar,R. Clemente; Colinas-León,M. Teresa; Rodríguez Pérez,J. Enrique.
Resumen En México la producción de pimiento morrón (Capsicum annuum L.) en invernadero y con hidroponía se inició hace unos 20 años. Los productores del país han adoptado sistemas de producción desarrollados en otros países, principalmente en Europa con condiciones climáticas y socioeconómicas diferentes. El propósito de este estudio fue evaluar el rendimiento de las variedades de pimiento morrón Orión y Triple Star, establecidas en tres densidades de población (5, 6.5 y 8 plantas m-2) en invernadero. Las plantas se despuntaron a la altura de la tercera o cuarta ramificación para obtener ciclos cortos de cultivo desde el trasplante y cosecha menores a cuatro meses. El cultivo hidropónico incluyó arena de tezontle como sustrato. El diseño experimental fue...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum L.; Poda; Densidad de población; Hidroponía; Sistemas de producción; Pimiento dulce.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400437

Crambe (Crambe abyssinica) and sunflower (Helianthus annuus) protein concentrates: production methods and nutritional properties for use in fish feed
Provedor de dados: 42
Autores: LOVATTO,NAGLEZI M.; GOULART,FERNANDA R.; LOUREIRO,BRUNO B.; SPERONI,CAROLINE S.; BENDER,ANA B.B.; GIACOMINI,SANDRO J.; RADÜNZ NETO,JOÃO; SILVA,LEILA P. DA.
ABSTRACT The purpose of this study was to develop and improve protein concentration techniques for two industrial by-products with the potential for use in fish feed. In particular, we chemically characterized crambe meal and sunflower meal and their protein concentrates. Three different protein concentration methods were tested: isoelectric pH (pHi), acid pH and alkaline pH. For crambe and sunflower meals extraction using the pHi method was most efficient in terms of protein yield and crude protein content in the concentrates; this method also increased lysine and methionine content in the concentrates. The water holding capacity of the sunflower protein concentrate was greater than that of the crambe protein concentrate. The crambe protein concentrate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Antinutrients; Aquafeeds; Byproducts; Phenolic compounds; Protein concentration.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502495

Comparative analysis of two different models of swimming applied to pregnant rats born small for pregnant age
Provedor de dados: 42
Autores: CORVINO,SILVANA B.; DAMASCENO,DÉBORA C.; SINZATO,YURI K.; NETTO,ALINE O.; MACEDO,NATHÁLIA C.D.; ZAMBRANO,ELENA; VOLPATO,GUSTAVO T.
ABSTRACT The aim of this study was to compare two models of swimming applied to pregnant rats born small for pregnancy age (SPA). Diabetes was chemically induced in adult female rats to develop an inadequate intrauterine environment, leading to birth of a SPA offspring. In adulthood, the female SPA rats were mated and submitted to different swimming programs. The exercise program 1 (Ex1) consisted of swimming for 15 minutes, followed by 15 minutes of rest and another 15 minutes of swimming, 3 days a week before and during pregnancy. Another program (Ex2) was applied during 60 minutes uninterrupted a day, 6 days/week during pregnancy. The pregnant rats presented no interference on body weight and glycemia. The rats submitted to Ex2 model showed decreased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rats; Diabetes; Pregnancy; Offspring; Exercise.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100223

Physiological response and productivity of safflower lines under water deficit and rehydration
Provedor de dados: 42
Autores: BORTOLHEIRO,FERNANDA P.A.P.; SILVA,MARCELO A.
ABSTRACT Water deficit is one of the major stresses affecting plant growth and productivity worldwide. Plants induce various morphological, physiological, biochemical and molecular changes to adapt to the changing environment. Safflower (Carthamus tinctorius L.), a potential oil producer, is highly adaptable to various environmental conditions, such as lack of rainfall and temperatures. The objective of this work was to study the physiological and production characteristics of six safflower lines in response to water deficit followed by rehydration. The experiment was conducted in a protected environment and consisted of 30 days of water deficit followed by 18 days of rehydration. A differential response in terms of photosynthetic pigments, electrolyte...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carthamus tinctorius L.; Drought physiology; Irrigation; Water use efficiency; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603051

Antioxidant effect of quinoline derivatives containing or not selenium: Relationship with antinociceptive action quinolines are antioxidant and antinociceptive
Provedor de dados: 42
Autores: WILHELM,ETHEL A.; FERREIRA,ANA TERESINHA; PINZ,MIKAELA P.; REIS,ANGÉLICA S. DOS; VOGT,ANE G.; STEIN,ANDRE L.; ZENI,GILSON; LUCHESE,CRISTIANE.
ABSTRACT The present study investigated the antioxidant effect of a new class of quinoline derivatives (a-d) on assays in vitro. Lipid peroxidation, thiol peroxidase-like and free radical scavenging activities were determined to evaluate antioxidant activity of compounds. Thiol oxidase-like and δ-aminolevulinate dehydratase activities were performed as a toxicological parameter. A second objective of this study was to evaluate the in vivo antinociceptive effect of the compound with better antioxidant effect and without toxic effects in a model of nociception induced by formalin in mice. In liver, at 100 µM, compound a reduced the lipid peroxidation to the control levels, while compounds c and d partially reduced it. In brain, only compound d partially...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antinociceptive; Antiedematogenic; Anti-inflammatory; Antioxidant; Quinoline.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200457

A New Acetylcholinesterase Inhibitor from Green Glycosylation of Trachyloban-19-oic Acid by Mucor plumbeus
Provedor de dados: 42
Autores: SANTOS,GABRIEL F. DOS; TAKAHASHI,JACQUELINE A.
ABSTRACT The in vitro metabolism of a widespread natural product, trachyloban-19-oic acid (1), by the fungal species Mucor plumbeus was studied in a sucrose-yeast liquid medium. Two products were isolated, and their structures were determined by spectroscopic means as 7β-hydroxytrachyloban-19-oic acid (5) and trachyloban-19-O-β-D-glucopyranosyl ester (6). To the best of our knowledge, compound 6 is herein reported by the first time in the literature. These compounds were assayed for acetylcholinesterase inhibition along with some related compounds. Compound 6 showed the highest acetylcholinesterase inhibitory activity at 10000 µg/mL among the tested compounds, a result (92.89%) comparable to the activity of the positive control, galanthamine (94.21%)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetylcholinesterase inhibitors; Biotransformation; Green glycosylation; Mucor plumbeus; Trachyloban-19-oic acid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000501961

Palisadegrass effects on N fertilizer dynamic in intercropping systems with corn
Provedor de dados: 42
Autores: ALMEIDA,RODRIGO E.M. DE; OLIVEIRA,SILAS M. DE; LAGO,BRUNO C.; P. JUNIOR,CLOVIS; TRIVELIN,PAULO C.O.; FAVARIN,JOSÉ L.
ABSTRACT Corn grain yield, nitrogen (N) fertilizer efficiency and distribution to corn alone and three forms of corn and palisadegrass (Urochloa spp.) intercropping implantation was investigated. A field experiment with 15N labeling fertilizer was performed in randomized block design. No form of palisadegrass intercropping implantation affected corn grain yield, total N accumulation and N use efficiency (NUE), which were 8.7 t ha-1, 205 kg ha-1 and 37% respectively. The palisadegrass produced on average 1.9 t of dry mass, absorbing a maximum of 6 kg ha-1 or 5.5% of N fertilizer during corn growing. Furthermore, the palisadegrass did not affect N fertilizer distribution in soil-plant system, in which 28.2% was recovered in the soil and 40.4% in the plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 15N isotope; Crop-livestock integration; Nitrogen use efficiency; No-tillage; Urochloa spp.; Zea mays.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401917

Potentially mobile of heavy metals on the surface sediments in tropical hyper-saline and positive estuaries
Provedor de dados: 42
Autores: SILVA,CARLOS A. RAMOS E; FONSECA,ESTEFAN M. DA; GROTTO,BEATRIZ W.; SOUZA,FLAVO E.S. DE; BAPTISTA NETO,JOSÉ A.
ABSTRACT Estuarine sediments represent important pools of trace metals, released from both anthropogenic and natural sources. Fluctuations in the water column physicochemical conditions, on the other hand, may transfer metals from solid to liquid compartment and resulting in contamination of the surrounding environment. The present research was carried out to evaluate the weakly bounded heavy metal levels in tropical hyper-saline and positive estuaries, in order to quantify its potentially availability. The monitoring includes five metals (Cd, Cr, Cu, Pb, Zn) and cover nine estuaries in Rio Grande do Norte state/Brazil, including four hypersaline and five true estuaries. 50 surface sediment samples were collected in each estuary. At the same time, organic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weakly bounded heavy metal; Hyper-saline waters; Positive estuaries; Surface sediment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602597

Occurrence of arbuscular mycorrhizal fungi on King George Island, South Shetland Islands, Antarctica
Provedor de dados: 42
Autores: BARBOSA,MARISÂNGELA V.; PEREIRA,ELISMARA A.; CURY,JULIANO C.; CARNEIRO,MARCO A.C.
ABSTRACT Arbuscular mycorrhizal fungi make up an important ecological niche in ecosystems, and knowledge of their diversity in extreme environments is still incipient. The objective of this work was to evaluate the density and diversity of arbuscular mycorrhizal fungi in the soil of King George Island in the South Shetland Islands archipelago, Antarctica. For that, soil and roots of Deschampsia antarctica were collected at the brazilian research station in Antarctica. The spore density, species diversity and mycorrhizal colonization in the roots were evaluated. There was a low density of spores (27.4 ± 17.7) and root mycorrhizal colonization (6 ± 5.1%), which did not present statistical difference. Four species of arbuscular mycorrhizal fungi were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antarctica; Deschampsia antarctica; Low temperatures; Mycorrhizal fungi.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401737

Richness and structure of ant assemblies (Hymenoptera: Formicidae) in Atlantic forest in southern Brazil
Provedor de dados: 42
Autores: LUTINSKI,JUNIR A.; LUTINSKI,CLADIS J.; GUARDA,CARIN; BUSATO,MARIA A.; GARCIA,FLÁVIO R.M.
ABSTRACT Ant diversity is influenced by the structural complexity of the environment. Ants are thus an ecologically important group due to their potential to serve as indicators of environmental quality. The objective of this study was to evaluate ant diversity in areas with different land use histories and thus, within different stages of regeneration in the Permanent Preservation Area of the Foz do Chapecó Hydroelectric Plant reservoir. Ant assemblies among sample sites were compared using rarefaction analysis, and estimated richness, frequency of occurrence, and relative abundance were calculated. Associations between species and sample sites were evaluated using Principal Component Analysis (PCA). We identified 55 species in total from 24 genera,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ant fauna; Hydroelectric plant; Permanent Preservation Areas; Richness; Ants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602719

Morphology of the axial skeleton of seven bat genera (Chiroptera: Phyllostomidae)
Provedor de dados: 42
Autores: GAUDIOSO,PABLO J.; DÍAZ,M. MÓNICA; BARQUEZ,RUBÉN M.
ABSTRACT Here we present detailed descriptions and comparisons of the axial skeleton of seven species of bats belonging to five subfamilies of Phyllostomidae of different trophic guilds. The material examined consisted of 34 complete skeletons of seven species. For five of the studied species, previous descriptions have not been conducted, and for the vampires only limited information is available, so that descriptions for these species are here completed. The axial skeleton has characters that allow grouping of the species phylogenetically of the same subfamily and by feeding habits. At the same time, there are characters that associate species from different subfamilies with different types of diet or ways to obtain food.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Chiroptera; Description; Morphology; Phyllostomidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502341

A Novel Porous Diamond - Titanium Biomaterial: Structure, Microstructure, Physico-Mechanical Properties and Biocompatibility
Provedor de dados: 42
Autores: GUIMARÃES,ZULMIRA A.S.; DAMATTA,RENATO A.; GUIMARÃES,RENAN S.; FILGUEIRA,MARCELLO.
ABSTRACT With the aim of introducing permanent prostheses with main properties equivalent to cortical human bone, Ti-diamond composites were processed through powder metallurgy. Grade 1 titanium and mixtures of Ti powder with 2%, 5% and 10 wt% diamond were compacted at 100MPa, and then sintered at 1250°C/2hr/10-6mbar. Sintered samples were studied in the point of view of their microstructures, structures, yield strength and elastic modulus. The results showed that the best addition of diamonds was 2 wt%, which led to a uniform porosity, yield strength of 370MPa and elastic modulus of 13.9 GPa. Samples of Ti and Ti-2% diamond were subjected to in vitro cytotoxicity test, using cultures of VERO cells, and it resulted in a biocompatible and nontoxic composite...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomaterials; Titanium; Diamond; Sintering; Characterization; Biocompatibility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603111

Going Beyond Academic Integrity Might Broaden our Understanding of Plagiarism in Science Education: A Perspective from a Study in Brazil
Provedor de dados: 42
Autores: SANTOS,CHRISTIANE C.; SANTOS,PATRÍCIA S. DOS; SANT'ANA,MAURÍCIO C.; MASUDA,HATISABURO; BARBOZA,MONICA B.; VASCONCELOS,SONIA M.R.
ABSTRACT Fostering innovation and creativity is a priority in the science and education policy agenda of most countries, which have advocated that innovative minds and processes will boost scientific and economic growth. While our knowledge society has embraced this view, fostering creativity is among the major challenges faced by educators and policymakers. For example, plagiarism, which may be considered a form of imitation and repetition, is a global concern at schools and universities. However, most discussions focus on academic integrity, which, we believe, leaves some gaps in the approach to the problem. As part of an ongoing project on plagiarism, science and education policy, we show results from a survey sent to 143 high-school science teachers at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Research integrity; Plagiarism; Science education; Science policy; Rote learning.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200757

Special metabolites isolated from Urochloa humidicola (Poaceae)
Provedor de dados: 42
Autores: OLIVEIRA,DÉBORA R. DE; NEPOMUCENO,DELCI D.; CASTRO,ROSANE N.; BRAZ FILHO,RAIMUNDO; CARVALHO,MÁRIO G. DE.
ABSTRACT This study aims to identify special metabolites in polar extracts from Urochloa humidicola (synonym Brachiaria humidicola) that have allelopathic effects and induce secondary photosensitization in ruminants. The compounds were isolated and identified via chromatographic and spectroscopic techniques. The compounds 4-hydroxy-3-methoxy-benzoic acid, trans-4-hydroxycinnamic acid, and p-hydroxy-benzoic acid; the flavonols isorhamnetin-3-O-β-d-glucopyranoside and methyl quercetin-3-O-β-d-glucuronate; and kaempferitrin, quercetin-3-O-α-l-rhamnopyranoside, and tricin were identified in the extract from the leaves of Urochloa humidicola. Two furostanic saponins, namely, dioscin and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria humidicola; Flavonoids; Steroidal saponins; Urochloa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300789

Effect of Bauhinia holophylla treatment in Streptozotocin-induced diabetic rats
Provedor de dados: 42
Autores: PINHEIRO,MARCELO S.; RODRIGUES,LUHARA S.; S. NETO,LEILA; MORAES-SOUZA,RAFAIANNE Q.; SOARES,THAIGRA S.; AMÉRICO,MADILEINE F.; CAMPOS,KLEBER E.; DAMASCENO,DÉBORA C.; VOLPATO,GUSTAVO T.
ABSTRACT Bauhinia holophylla, commonly known as “cow’s hoof”, is widely used in Brazilian folk medicine for the diabetes treatment. Therefore, the aim of this study was at evaluating the aqueous extract effect of Bauhinia holophylla leaves treatment on the streptozotocin-induced diabetic rats. Diabetes was induced by Streptozotocin (40 mg/Kg) in female Wistar rats. Oral administration of aqueous extract of Bauhinia holophylla leaves was given to non-diabetic and diabetic rats at a dose of 400 mg/kg during 21 days. On day 17 of treatment, the Oral Glucose Tolerance Test was performed to determine the area under the curve. At the end of the treatment, the animals were anesthetized and blood was collected for serum biochemical parameters analysis. After...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bauhinia holophylla; Diabetes; Lipid profile; Medicinal plants; Rats.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100263

The use of microsatellite markers in Neotropical studies of wild birds: a literature review
Provedor de dados: 42
Autores: MOURA,RENAN F.; DAWSON,DEBORAH A.; NOGUEIRA,DENISE M.
ABSTRACT Despite extensive habitat fragmentation, the Neotropical region possesses 30% of the world´s bird species. Microsatellites have remained one of the most popular genetic markers and have been used in ecological and conservation studies since the 1990’s. We conducted a literature review comparing the number of papers published from January 1990 to July 2015 that used microsatellite markers for studies of wild birds in the Neotropical region, USA and some European countries. We assigned the articles to three categories of studies: population genetics, animal behavior/kinship analysis and the development of species-specific bird microsatellite markers. We also compared the studies in the Neotropics that used heterologous versus species-specific...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AVES; Cross-species amplification; Biodiversity; Ecology; Molecular markers; STR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100145

Ecology and biotechnological potential of bacterial community from three marine sponges of the coast of Rio de Janeiro, Brazil
Provedor de dados: 42
Autores: ARAÚJO,FÁBIO V. DE; NETTO,MARCELLE C.M.; AZEVEDO,GUSTAVO P.; JAYME,MARCELLY M.A.; NUNES-CARVALHO,MONICA C.; SILVA,MARIANA M.; CARMO,FLÁVIA L. DO.
ABSTRACT Marine sponges has been a large reservoir of microbial diversity, with the presence of many species specific populations as well as producing biologically active compounds, which has attracted great biotechnological interest. In order to verify the influence of the environment in the composition of the bacterial community present in marine sponges and biotechnological potential of bacteria isolated from these organisms, three species of sponges and the waters surrounding them were collected in different beaches of Rio de Janeiro, Brazil. The profile of the bacterial community present in sponges and water was obtained by PCR-DGGE technique and the biotechnological potential of the strains isolated by producing amylase, cellulase, protease and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial diversity; Biosurfactants; Enzymes; Marine sponges; PCR-DGGE.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602785

In vitro antiparasitic activity and chemical composition of the essential oil from Protium ovatum leaves (Burceraceae)
Provedor de dados: 42
Autores: ESTEVAM,ELISÂNGELA B.B.; DEUS,ISABELLA P.B. DE; SILVA,VANESSA P. DA; SILVA,ELIZABETH A.J. DA; ALVES,CASSIA C.F.; ALVES,JOSÉ MILTON; CAZAL,CRISTIANE M.; MAGALHÃES,LIZANDRA G.; PAGOTTI,MARIANA C.; ESPERANDIM,VIVIANE R.; SOUZA,ALEX F.; MIRANDA,MAYKER L.D.
ABSTRACT Leishmaniasis and trypanosomiasis are globally widespread parasitic diseases which have been responsible for high mortality rates. Since drugs available for their treatment are highly hepatotoxic, nephrotoxic and cardiotoxic, adherence to therapy has been affected. Thus, the search for new, more effective and safer drugs for the treatment of these diseases is necessary. Natural products have stood out as an alternative to searching for new bioactive molecules with therapeutic potential. In this study, the chemical composition and antiparasitic activity of the essential oil from Protium ovatum leaves against trypomastigote forms of Trypanosoma cruzi and the promastigote forms of Leishmania amazonensis were evaluated. The essential oil was promising...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trypanosoma cruzi; Leishmania amazonensis; Essential oil; Protium ovatum; Parasitic diseases.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603005

Global patterns of aboveground carbon stock and sequestration in mangroves
Provedor de dados: 42
Autores: ESTRADA,GUSTAVO C.D.; SOARES,MÁRIO L.G.
ABSTRACT In order to contribute to understand the factors that control the provisioning of the ecosystem service of carbon storage by mangroves, data on carbon stock and sequestration in the aboveground biomass (AGB) from 73 articles were averaged and tested for the dependence on latitude, climatic parameters, physiographic types and age. Global means of carbon stock (78.0 ± 64.5 tC.ha-1) and sequestration (2.9 ± 2.2 tC.ha-1.yr-1) showed that mangroves are among the forest ecosystems with greater capacity of carbon storage in AGB per area. On the global scale, carbon stock increases toward the equator (R²=0.22) and is dependent on 13 climatic parameters, which can be integrated in the following predictive equation: Carbon Stock in AGB = -16.342 + (8.341 x...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass; Carbon; Ecosystem services; Mangrove; Regression analysis; WorldClim.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300973

Potential effects of fungicide and algaecide extracts of Annona glabra L. (Annonaceae) on the microalgae Raphidocelis subcapitata and on the oomycete Pythium
Provedor de dados: 42
Autores: ROCHA,GISELI S.; MATSUMOTO,REGINALDO S.; LOMBARDI,ANA TERESA; LIMA,MARIA INÊS S.
ABSTRACT Annona glabra L. is a semi-deciduous tree that contains several active substances, including secondary metabolites, with antifungal activity. Phytopathogenic strains of the genus Pythium cause billion dollar losses all over the world on natural and crop species. Searching for eco-friendly algaecides and fungicides, we analyzed the effects of acetone extracts of A. glabra leaves on the algae Rhaphidocelis subcapitata (Korshikov) and on the oomycete Pythium aphanidermatum (Edson). We evaluated ten extract concentrations for each organism - 0 to 400 mg L-1 for algae and 0-1000 µg disc1 for oomycete. The results showed no effect on algae up to 75 mg L-1, but a significant inhibitory effect at 125 mg L-1 and above, which reduced the growth rate and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algal growth; Allelopathy; Leaf extract; Secondary metabolites.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502101

Climatically-mediated landcover change: impacts on Brazilian territory
Provedor de dados: 42
Autores: ZANIN,MARINA; TESSAROLO,GEIZIANE; MACHADO,NATHÁLIA; ALBERNAZ,ANA LUISA M.
ABSTRACT In the face of climate change threats, governments are drawing attention to policies for mitigating its effects on biodiversity. However, the lack of distribution data makes predictions at species level a difficult task, mainly in regions of higher biodiversity. To overcome this problem, we use native landcover as a surrogate biodiversity, because it can represent specialized habitat for species, and investigate the effects of future climate change on Brazilian biomes. We characterize the climatic niches of native landcover and use ecological niche modeling to predict the potential distribution under current and future climate scenarios. Our results highlight expansion of the distribution of open vegetation and the contraction of closed forests....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Brazil; Ecological niche modeling; Native landcover; Biomes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300939

Asymmetric bioreduction of β-ketoesters derivatives by Kluyveromyces marxianus: influence of molecular structure on the conversion and enantiomeric excess
Provedor de dados: 42
Autores: OLIVEIRA,SIMONE S.S.; BELLO,MURILO L.; RODRIGUES,CARLOS R.; AZEVEDO,PAULA L. DE; RAMOS,MARIA C.K.V.; AQUINO-NETO,FRANCISCO R. DE; FIAUX,SORELE B.; DIAS,LUIZA R.S.
ABSTRACT This study presents the bioreduction of six β-ketoesters by whole cells of Kluyveromyces marxianus and molecular investigation of a series of 13 β-ketoesters by hologram quantitative structure-activity relationship (HQSAR) in order to relate with conversion and enantiomeric excess of β-stereogenic-hydroxyesters obtained by the same methodology. Four of these were obtained as (R)-configuration and two (S)-configuration, among them four compounds exhibited &gt;99% enantiomeric excess. The β-ketoesters series LUMO maps showed that the β-carbon of the ketoester scaffold are exposed to undergo nucleophilic attack, suggesting a more favorable β-carbon side to enzymatic reduction based on adopted molecular conformation at the reaction moment. The HQSAR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biocatalysis; Β-ketoesters; Β-hydroxyesters; HQSAR; Whole cell bioreduction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401403

Assigning dates and identifying areas affected by fires in Portugal based on MODIS data
Provedor de dados: 42
Autores: PANISSET,JESSICA; DACAMARA,CARLOS C.; LIBONATI,RENATA; PERES,LEONARDO F.; CALADO,TERESA J.; BARROS,ANA.
ABSTRACT An automated procedure is here presented that allows identifying and dating burned areas in Portugal using values of daily reflectance from near-infrared and middle-infrared bands, as obtained from the MODIS instrument. The algorithm detects persistent changes in monthly composites of the so-called (V,W) Burn-Sensitive Index and the day of maximum change in daily time series of W is in turn identified as the day of the burning event. The procedure is tested for 2005, the second worst fire season ever recorded in Portugal. Comparison between the obtained burned area map and the reference derived from Landsat imagery resulted in a Proportion Correct of 95.6%. Despite being applied only to the months of August and September, the algorithm is able to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Burned area; MODIS; Portugal; Remote sensing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401487

Use of performance indicators to assess the solid waste management of health services
Provedor de dados: 42
Autores: ASSIS,MAYARA C.; GOMES,VANIELLE A.P.; BALISTA,WAGNER C.; FREITAS,RODRIGO R. DE.
ABSTRACT Modern society faces serious challenges, among them, the complexity of environmental problems. Thus, there are several possible sources of environmental degradation, however, the waste produced by health services have an important peculiarity due to its toxic or pathogenic characteristics, since when managed improperly provide also health risk public. The involvement of solid waste from healthcare services environmental impact integrates matters a little more complex, because in addition to environmental health, they also interfere with the healthiness of environments that generate, with the consequences of nosocomial infections, occupational health and public. Thus, the management has become an urgent need, especially when we see no use of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Performance indicators; SWOT Matrix; AHP; Waste.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502445

The Extended Log-Logistic Distribution: Properties and Application
Provedor de dados: 42
Autores: LIMA,STÊNIO R.; CORDEIRO,GAUSS M.
Abstract We propose a new four-parameter lifetime model, called the extended log-logistic distribution, to generalize the two-parameter log-logistic model. The new model is quite flexible to analyze positive data. We provide some mathematical properties including explicit expressions for the ordinary and incomplete moments, probability weighted moments, mean deviations, quantile function and entropy measure. The estimation of the model parameters is performed by maximum likelihood using the BFGS algorithm. The flexibility of the new model is illustrated by means of an application to a real data set. We hope that the new distribution will serve as an alternative model to other useful distributions for modeling positive real data in many areas.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exponentiated generalize; Generating function; Log-logistic distribution; Maximum likelihood estimation; Momen.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100003

Cytogenotoxicity of rice crop water after application of the tricyclazole fungicide
Provedor de dados: 42
Autores: WANDSCHEER,ALANA C.D.; MARCHESAN,ENIO; TEDESCO,SOLANGE B.; FRESCURA,VIVIANE DAL-SOUTO; SOARES,CAMILLE F.; LONDERO,GUILHERME P.; TELÓ,GUSTAVO M.; HANSEL,DÂMARIS S.S.
ABSTRACT Tricyclazole is currently one of the fungicides recommended for the treatment of diseases in irrigated rice. However, there is relatively little information on its cytotoxic and genotoxic potential. The objective of this study was to evaluate the cytotoxicity and genotoxicity of rice crop water after apllication of the tricyclazole fungicide through the Allium cepa L. test. The rice crop water samplings were collected before and 1, 15 and 30 days after application of the fungicide in rice plant shoots. The Allium cepa roots were placed in contact with the rice crop water to check for possible chromosomal abnormalities and mitotic index of the bioindicators meristematic cells. The data obtained by the Allium cepa test indicates that the application...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioindicator; Chromosomal abnormalities; Mitotic index; Pesticide; Irrigated rice.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301251

New azhdarchoid pterosaur (Pterosauria, Pterodactyloidea) with an unusual lower jaw from the Portezuelo Formation (Upper Cretaceous), Neuquén Group, Patagonia, Argentina
Provedor de dados: 42
Autores: KELLNER,ALEXANDER W.A.; CALVO,JORGE O.
ABSTRACT A new azhdarchoid pterosaur from the Upper Cretaceous of Patagonia is described. The material consists of an incomplete edentulous lower jaw that was collected from the upper portion of the Portezuelo Formation (Turonian-Early Coniacian) at the Futalognko site, northwest of Neuquén city, Argentina. The overall morphology of Argentinadraco barrealensis gen. et sp. nov. indicates that it belongs to the Azhdarchoidea and probable represents an azhdarchid species. The occlusal surface of the anterior portion is laterally compressed and shows blunt lateral margins with a medial sulcus that are followed by two well-developed mandibular ridges, which in turn are bordered laterally by a sulcus. The posterior end of the symphysis is deeper than in any...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pterosauria; Pterodactyloidea; Argentinadraco; Patagonia; Feeding behavior; Cretaceous.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502003

Uniqueness Properties of The Solution of The Inverse Problem for The Sturm-Liouville Equation With Discontinuous Leading Coefficient
Provedor de dados: 42
Autores: ADILOGLU,ANAR; GÜRDAL,MEHMET; KINCI,AYŞE N.
Abstract The present paper studies uniqueness properties of the solution of the inverse problem for the Sturm-Liouville equation with discontinuous leading coefficient and the separated boundary conditions. It is proved that the considered boundary-value is uniquely reconstructed, i.e. the potential function of the equation and the constants in the boundary conditions are uniquely determined by given Weyl function or by the given spectral data.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asymptotic formulas for eigenvalues; Boundary value problems; Inverse problems; Spectral; Analysis of ordinary differential operators; Sturm-Liouville theory; Transformation operator.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602547

Inhibitory effects on the production of inflammatory mediators and reactive oxygen species by Mori folium in lipopolysaccharide-stimulated macrophages and zebrafish
Provedor de dados: 42
Autores: KWON,DA HYE; JEONG,JIN WOO; CHOI,EUN OK; LEE,HYE WON; LEE,KI WON; KIM,KI YOUNG; KIM,SUNG GOO; HONG,SU HYUN; KIM,GI-YOUNG; PARK,CHEOL; HWANG,HYE-JIN; SON,CHANG-GUE; CHOI,YUNG HYUN.
ABSTRACT Mori folium, the leaf of Morus alba L. (Moraceae), has been traditionally used for various medicinal purposes from ancient times to the present. In this study, we examined the effects of water extract of Mori folium (WEMF) on the production of inflammatory mediators, such as nitric oxide (NO) and prostaglandin E2 (PGE2), and reactive oxygen species (ROS) in lipopolysaccharide (LPS)-stimulated murine RAW 264.7 macrophages. Our data indicated that WEMF significantly suppressed the secretion of NO and PGE2 in RAW 264.7 macrophages without any significant cytotoxicity. The protective effects were accompanied by a marked reduction in their regulatory gene expression at the transcription level. WEMF attenuated LPS-induced intracellular ROS production in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mori folium; Inflammation; ROS; Macrophage; Zebrafish.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200661

Commemorative Volume of the Centenary of the Brazilian Academy of Sciences
Provedor de dados: 42
Autores: KELLNER,ALEXANDER W.A.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200371

The use of Proteinase K to access genitalia morphology, vouchering and DNA extraction in minute wasps
Provedor de dados: 42
Autores: MARTINELLI,ARTURO B.; WAICHERT,CECILIA; BARBOSA,DIEGO N.; FAGUNDES,VALÉRIA; AZEVEDO,CELSO O.
ABSTRACT Genitalia are rich source of characters in insect taxonomy. Usually, they are examined after dissection and cleaning with potassium hydroxide (KOH), procedure that may damage both genital morphological structures and intracellular molecular contents. Enzymatic procedure with Proteinase K has been used to clean muscle off the genitalia while extract DNA, but its damage to the genital structures has not been evaluated. Herein, we qualitatively compare the use of KOH and Proteinase K to prepare genital structures in minute insects (Hymenoptera: Bethylidae). We show that Proteinase K is better to preserve the genital structure and provides quality DNA.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diaphanization; Genitalia preparation; KOH; Wolbachia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401629

Fatty acid profile in vertical strata of elephant grass subjected to intermittent stocking
Provedor de dados: 42
Autores: DIAS,KAMILA M.; SCHMITT,DANIEL; RODOLFO,GISELLE R.; DESCHAMPS,FRANCISCO C.; CAMARGO,GUILHERME N.; PEREIRA,RAPHAEL S.; SBRISSIA,ANDRÉ F.
ABSTRACT The milk and meat from animals with a pasture-based diet have higher proportions of CLA and C18:3 and lower omega-6:omega-3 ratios than products from animals with diets based on corn silage and concentrate. However, most of the published studies have evaluated fatty acid profiles in temperate climate grasses and the literature with tropical grasses is scarce. Thus, the aim of this study was to evaluate the morphological and fatty acid compositions in the vertical strata of elephant grass (Pennisetum purpureum Schum.) swards subjected to grazing heights (90 or 120 cm pre-grazing heights) and levels of defoliation (50% or 70% removal of the initial pre-grazing height). There were no interactions among pre-grazing height, the level of defoliation and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Linolenic acid; Pennisetum purpureum Schum; Polyunsaturated fatty acid; Tropical forage.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401707

Dental caries at Lapa do Santo, central-eastern Brazil: An Early Holocene archaeological site
Provedor de dados: 42
Autores: DA-GLORIA,PEDRO; OLIVEIRA,RODRIGO E.; NEVES,WALTER A.
ABSTRACT The origin and dispersion of the first Americans have been extensively investigated from morphological and genetic perspectives, but few studies have focused on their health and lifestyle. The archaeological site of Lapa do Santo, central-eastern Brazil, has exceptionally preserved Early Holocene human skeletons, providing 19 individuals with 327 permanent and 122 deciduous teeth dated to 9,250 to 7,500 years BP. In this study, we test whether the inhabitants of Lapa do Santo had high prevalence of dental caries as previous studies of Lagoa Santa collection have indicated, using individual and tooth as units of analyses. The results show a high prevalence of dental caries in the permanent dentition (5.50%, n=327 teeth; 69.23%, n=13 individuals)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioarchaeology; Brazilian prehistory; Dental pathologies; Lagoa Santa; Oral health; Paleoamericans.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100307

A new name for Agromyza flava Sousa &amp;amp; Couri (Diptera: Agromyzidae)
Provedor de dados: 42
Autores: SOUSA,VIVIANE R. DE; COURI,MÁRCIA S.
ABSTRACT A new name Agromyza pauciflava nom. nov. is proposed for Agromyza flava Sousa &amp; Couri.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Agromyzidae; Name correction; Nomenclature; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401641

Ecology of the non-native snail Sinotaia cf quadrata (Caenogastropoda: Viviparidae). A study in a lowland stream of South America with different water qualities
Provedor de dados: 42
Autores: FERREIRA,ANA CLARA; PAZ,ESTEFANÍA L.; RUMI,ALEJANDRA; OCON,CAROLINA; ALTIERI,PAULA; CAPÍTULO,ALBERTO RODRIGUES.
ABSTRACT Sinotaia quadrata is a snail native from Asia recorded for the first time in South America in 2009 in central Argentina. In 2015, this species was also found in a lowland stream with different water qualities. Our aims were to contribute to the knowledge of its population ecology and to compare the individuals from the two locations anatomically. Snails were searched at 6 sites, where physicochemical and hydraulic parameters were measured. Biological samples were also taken at two sites (S3 and S4) to study the population traits of S. cf quadrata (density, size structure, fecundity and sex ratio) and to assess the water quality through macroinvertebrates' biological indices (richness, diversity and IBPamp). Physicochemical and biological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alien species; Life history traits; Lowland streams; Tolerance; Water quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301059

Analog Models of Flanking Structures and a Natural Example in the Quadrilátero Ferrífero, Minas Gerais
Provedor de dados: 42
Autores: GOMES,CAROLINE J.S.; RODRIGUES,BRAULIO A.; ENDO,ISSAMU.
ABSTRACT The aim of this study is to present analog models of flanking structures and to analyze the Fábrica Nova synform, Quadrilátero Ferrífero, Minas Gerais, from a geometric point of view. We set up seven models using a linear viscous silicone and produced flanking structures with a shear velocity of 2 cm h-1. At different initial orientations with respect to the shear zone boundary, a rigid cross-cutting element with lubricated boundaries was deformed via sinistral bulk flow at a shear strain of γ = 1.28. The most interesting features of our experiments are the geometries of the different marker lines, which are heterogeneous and resulted from thickening and thinning of the silicone at the cross-cutting element terminations. To compare our analog...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physical modelling; Flanking folds; Silicone; Fábrica Nova synform.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401431

Evaluation of methods for the quantification of ether extract contents in forage and cattle feces
Provedor de dados: 42
Autores: BARBOSA,MARCÍLIA M.; DETMANN,EDENIO; VALADARES FILHO,SEBASTIÃO C.; DETMANN,KELLY S.C.; FRANCO,MARCIA O.; BATISTA,ERICK D.; ROCHA,GABRIEL C.
ABSTRACT The objective of this study was to compare the estimates of ether extract (EE) contents obtained by the Randall method and by the high-temperature method of the American Oil Chemist's Society (AOCS; Am 5-04) in forages (n = 20) and cattle feces (n = 15). The EE contents were quantified by using the Randall extraction or AOCS method and XT4 filter bags or cartridges made of qualitative filter paper (80 g/m²) as containers for the samples. It was also evaluated the loss of particles, and concentration of residual chlorophyll after extraction and the recovery of protein and minerals in the material subjected to extraction. Significant interaction was observed between extraction method and material for EE contents. The EE estimates using the AOCS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude fat; Feed analysis; Filter bags; Non-polar compounds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301295

Tannic extract potential as natural wood preservative of Acacia mearnsii
Provedor de dados: 42
Autores: SILVEIRA,AMANDA G. DA; SANTINI,ELIO J.; KULCZYNSKI,STELA M.; TREVISAN,RÔMULO; WASTOWSKI,ARCI D.; GATTO,DARCI A.
ABSTRACT High toxicity of the preservatives most frequently used in wood treatment and the resulting risks of handling pose a threat to small producers and to the environment. In an attempt to mitigate these problems, the present study was conducted with the objective of evaluating the preservative effect of tannic extract on biodeterioration of Acacia mearnsii wood. For this purpose, untreated and preserved specimens, some with tannin extract and some with a preservative mixture based on CCB (Chromated Copper Borate), were submitted to accelerated rotting trials with the fungus that causes white rot (Pycnoporus sanguineus) for 16 weeks. The evaluations were made with a basis on weight loss and chemical components analysis, and they showed that the natural...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extractives; Laboratory testing; Wood quality; White rot.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603031

Glass Microbeads in Analog Models of Thrust Wedges
Provedor de dados: 42
Autores: D'ANGELO,TAYNARA; GOMES,CAROLINE J.S.
ABSTRACT Glass microbeads are frequently used in analog physical modeling to simulate weak detachment zones but have been neglected in models of thrust wedges. Microbeads differ from quartz sand in grain shape and in low angle of internal friction. In this study, we compared the structural characteristics of microbeads and sand wedges. To obtain a better picture of their mechanical behavior, we determined the physical and frictional properties of microbeads using polarizing and scanning electron microscopy and ring-shear tests, respectively. We built shortening experiments with different basal frictions and measured the thickness, slope and length of the wedges and also the fault spacings. All the microbeads experiments revealed wedge geometries that were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compressional deformation models; Sand; Microbeads; Physical and frictional characterizations.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100073

Physical and chemical study of lattice kaolinites and their interaction with orthophosphate
Provedor de dados: 42
Autores: SILVA,MARCONDES SILVA E; LAGES,ANDERSON S.; SANTANA,GENILSON P.
ABSTRACT This study covers the evaluation of the structure and the capacity in adsorbing orthophosphate ions of kaolinites collected from sampling sites in Manaus (Brazil). The kaolinites were obtained using physical fractioning (sieving/siphoning) techniques and chemical treatment with HCl, H2SO4, H2O2 and KCl. The investigation of the kaolinite lattices involved the Hinckley and Plançon indexes determined from X-ray diffraction data, Fourier transformed infrared spectroscopy, scanning electron microscopy and Mössbauer spectroscopy. The absorption capacity of orthophosphate ions was calculated by Freundlich and Langergren isotherms. A transitional state was observed in the crystallographic structure from kaolinites because of the isomorphic substitution...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freundlich; Isomorphic substitution; Langergren; Manaus; Mössbauer.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401391

Oral insulin improves metabolic parameters in high fat diet fed rats
Provedor de dados: 42
Autores: LIPINSKI,LEANDRO C.; KMETIUK,LOUISE B.; MATHIAS,PAULO C.F.; MALTA,ANANDA; FAVERO,GIOVANI M.; RIBEIRO,TATIANE A.; TOLEDO,ALCEU; NETTO,MARIO R. MONTEMOR; RODRIGUES,MARCOS R.S.
ABSTRACT Introduction/Aim: The gut has shown to have a pivotal role on the pathophysiology of metabolic disease. Food stimulation of distal intestinal segments promotes enterohormones secretion influencing insulin metabolism. In diabetic rats, oral insulin has potential to change intestinal epithelium behavior. This macromolecule promotes positive effects on laboratorial metabolic parameters and decreases diabetic intestinal hypertrophy. This study aims to test if oral insulin can influence metabolic parameters and intestinal weight in obese non-diabetic rats. Methods: Twelve weeks old Wistar rats were divided in 3 groups: control (CTRL) standard chow group; high fat diet low carbohydrates group (HFD) and HFD plus daily oral 20U insulin gavage (HFD+INS)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oral insulin; Intestine; Diabetes; Obesity; Metabolism; Pancreatic beta-cell.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401699

Anesthesia of Epinephelus marginatus with essential oil of Aloysia polystachya: an approach on blood parameters
Provedor de dados: 42
Autores: FOGLIARINI,CARINE O.; GARLET,QUELEN I.; PARODI,THAYLISE V.; BECKER,ALEXSSANDRO G.; GARCIA,LUCIANO O.; HEINZMANN,BERTA M.; PEREIRA,ANA MARIA S.; BALDISSEROTTO,BERNARDO.
ABSTRACT This study investigated the anesthetic potential of the essential oil (EO) of Aloysia polystachya in juveniles of dusky grouper (Epinephelus marginatus). Fish were exposed to different concentrations of EO of A. polystachya to evaluate time of induction and recovery from anesthesia. In the second experiment, fish were divided into four groups: control, ethanol and 50 or 300 µL L−1 EO of A. polystachya, and each group was submitted to induction for 3.5 min and recovery for 5 or 10 min. The blood gases and glucose levels showed alterations as a function of the recovery times, but Na+ and K+ levels did not show any alteration. In conclusion, the EO from leaves of A. polystachya is an effective anesthetic for dusky grouper, because anesthesia was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anesthetic efficacy; Blood gases; Glucose; Hemoglobin; Plasma ion levels.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200445

Life-long Maternal Cafeteria Diet Promotes Tissue-Specific Morphological Changes in Male Offspring Adult Rats
Provedor de dados: 42
Autores: SANTOS,CAROLYNE D.S.; BALBO,SANDRA L.; GUIMARÃES,ANA T.B.; SAGAE,SARA C.; NEGRETTI,FÁBIO; GRASSIOLLI,SABRINA.
ABSTRACT Here, we evaluated whether the exposure of rats to a cafeteria diet pre- and/or post-weaning, alters histological characteristics in the White Adipose Tissue (WAT), Brown Adipose Tissue (BAT), and liver of adult male offspring. Female Wistar rats were divided into Control (CTL; fed on standard rodent chow) and Cafeteria (CAF; fed with the cafeteria diet throughout life, including pregnancy and lactation). After birth, only male offspring (F1) were maintained and received the CTL or CAF diets; originating four experimental groups: CTL-CTLF1; CTL-CAFF1; CAF-CTLF1; CAF-CAFF1. Data of biometrics, metabolic parameters, liver, BAT and WAT histology were assessed and integrated using the Principal Component Analysis (PCA). According to PCA analysis worse...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Obesity; Dams; Offspring; Histology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602887

Dynamic Analysis of the Temperature and the Concentration Profiles of an Industrial Rotary Kiln Used in Clinker Production
Provedor de dados: 42
Autores: RODRIGUES,DIULIA C.Q.; SOARES JUNIOR,ATÍLIO P.; COSTA JUNIOR,ESLY F.; COSTA,ANDRÉA O.S.
ABSTRACT Cement is one of the most used building materials in the world. The process of cement production involves numerous and complex reactions that occur under different temperatures. Thus, there is great interest in the optimization of cement manufacturing. Clinker production is one of the main steps of cement production and it occurs inside the kiln. In this paper, the dry process of clinker production is analysed in a rotary kiln that operates in counter flow. The main phenomena involved in clinker production is as follows: free residual water evaporation of raw material, decomposition of magnesium carbonate, decarbonation, formation of C3A and C4AF, formation of dicalcium silicate, and formation of tricalcium silicate. The main objective of this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clinker; Dynamic analysis; Mathematical modelling; Rotary kiln.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603123

Brazilian Scientific Mobility Program - Science without Borders - Preliminary Results and Perspectives
Provedor de dados: 42
Autores: MCMANUS,CONCEPTA; NOBRE,CARLOS A.
ABSTRACT The Brazilian Scientific Mobility Program - Science without Borders (SwB) - saw the concession of over 101 thousand scholarships for Brazilian STEM students and education professionals to attend universities worldwide. As the first phase of this program ends, it is time to take a first look at its impacts, mainly on the undergraduate student body (79% of total scholarships implemented). Benefits included a 6-month language course (optional), a one year undergraduate course and optional 2 month internship in a university, government laboratory or technology company. Positive impacts have been seen on entrance into post-graduate programs (&gt;20% of SwB students compared to &lt;5% of the overall student body of similar fields), as well as high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Innovation; Internationalization; Scholarships; Social impact; STEM areas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200773

Tryptophan overloading activates brain regions involved with cognition, mood and anxiety
Provedor de dados: 42
Autores: SILVA,LUANA C.A.; VIANA,MILENA B.; ANDRADE,JOSÉ S.; SOUZA,MELYSSA A.; CÉSPEDES,ISABEL C.; D’ALMEIDA,VÂNIA.
ABSTRACT Tryptophan is the only precursor of serotonin and mediates serotonergic activity in the brain. Previous studies have shown that the administration of tryptophan or tryptophan depletion significantly alters cognition, mood and anxiety. Nevertheless, the neurobiological alterations that follow these changes have not yet been fully investigated. The aim of this study was to verify the effects of a tryptophan-enriched diet on immunoreactivity to Fos-protein in the rat brain. Sixteen male Wistar rats were distributed into two groups that either received standard chow diet or a tryptophan-enriched diet for a period of thirty days. On the morning of the 31st day, animals were euthanized and subsequently analyzed for Fos-immunoreactivity (Fos-ir) in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fos protein; Immunoreactivity; Serotonin; Tryptophan.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100273

Evaluation of the predisposition and clinical impact of BK virus replication in kidney transplant patients
Provedor de dados: 42
Autores: MOURA,ELVIANI B.; PETZHOLD,SILVIA V.; AMARAL,AUGUSTO R.; DEBONI,LUCIANE M.; FRANÇA,PAULO H.C. DE.
ABSTRACT The BK virus (BKV) produces a subclinical kidney infection in immunocompetent individuals. However, viremia may occur in kidney transplant patients with ongoing immunosuppression. BKV-associated nephropathy (BKVN) has no specific treatment and is a leading cause of organ transplant loss. In this study, we evaluated the predisposition and the clinical impact of BKV replication in kidney transplant patients during post-transplant monitoring in a reference institution in Brazil. Demographic, clinical and laboratory data generated during routine outpatient follow-up were retrospectively collected. BK viremia was investigated using real-time polymerase chain reaction. Of the 553 participants, 7.4% (n = 41) presented BKV replication. Of these, 16 (39%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BK virus; Nephropathy; Renal transplantation; Viremia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200675

Terrestrial impact structures as geoheritage: an assessment method of their scientific value and its application to Brazil
Provedor de dados: 42
Autores: SÁNCHEZ,JOANA P.; BRILHA,JOSÉ B.R.
ABSTRACT Terrestrial impact structures are geological and geomorphological features with particular importance to understand the history and evolution of the planet. Impact structures are scattered around the world but in many countries these features are under threat, essentially due to anthropic factors. Impact structures with higher scientific value should be considered as geological heritage and, consequently, be subjected to geoconservation strategies. In order to select the most important impact structures to be properly conserved and managed, this paper proposes a quantitative assessment method of the scientific value of these structures. The eight Brazilian impact structures were used to test this method that has the potential to be applied to any...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geological heritage; Impact structure; Assessment; Inventory; Geoconservation; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300825

Population dynamics of  Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species
Provedor de dados: 42
Autores: LOPES,ANA ELISA B.; GRABOWSKI,RAPHAEL C.; GARCIA,JOYCE R.; FRANSOZO,ADILSON; COSTA,ROGÉRIO C. DA; HIROKI,KÁTIA A.N.; CASTILHO,ANTONIO L.
ABSTRACT This is the first study to evaluate in broad spatiotemporal scales the growth parameters and population structure of Rimapenaeus constrictus, a barely damaged species composing the bycatch from shrimp fishing in the Western Atlantic. The abundance and size-class frequency distribution, growth, longevity and sex ratio were evaluated from monthly samples obtained in the northern littoral of São Paulo state from Jan/1998 to Jun/2003. We measured 5,812 individuals in which the sex ratio was skewed toward females; this was more evident in size classes greater than 10 mm in CL (carapace length) (binomial test, p&lt;0.05). We selected 16 growth cohorts of females, and 8 of males, the majority consisting of younger individual cohorts excluded from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fisheries biology; Latitudinal variation; Recruitment cohorts; Roughneck shrimp; Stock conservation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301013

Environmental drivers on leaf phenology of ironstone outcrops species under seasonal climate
Provedor de dados: 42
Autores: GARCIA,LETÍCIA C.; BARROS,FERNANDA V.; LEMOS-FILHO,JOSÉ P.
ABSTRACT Banded iron formations (BIF) have a particular vegetation type and provide a good model system for testing theories related to leaf phenology, due to unique stressful environmental conditions. As a consequence of the stressful conditions of BIF environment, we hypothesize that most species would retain at least some significant canopy cover, even at the end of the dry season, independently of growth form - trees, shrubs, and sub-shrubs. Considering the strong seasonality, we also hypothesize that photoperiod and rainfall act as triggers for leaf fall and leaf flushing in these environments. The majority of the fifteen studied species had a semi-deciduous behavior and shed their leaves mainly during the dry season, with a recovery at the end of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canga; Day length; Drought stress; Evergreen; Leaf shedding; Tropical ecosystems.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100131

The conservation of native priority medicinal plants in a Caatinga area in Ceará, northeastern Brazil
Provedor de dados: 42
Autores: SANTOS,MARIA O.; ALMEIDA,BIANCA V. DE; RIBEIRO,DAIANY A.; MACÊDO,DELMACIA G. DE; MACÊDO,MÁRCIA J.F.; MACEDO,JULIMERY G.F.; SOUSA,FRANCISCA F.S. DE; OLIVEIRA,LIANA G.S. DE; SARAIVA,MANUELE E.; ARAÚJO,THATIANE M.S.; SOUZA,MARTA M.A.
ABSTRACT Much of the Brazilian semiarid region faces a considerable process of degradation of natural resources, and ethnobotanical studies have collaborated with important information about the use and traditional knowledge, serving as a tool to design conservation strategies of native plant species. Thus, this study aimed to determine medicinal species meriting conservation priorities in a “Caatinga” area in the northeastern of Brazilian territory. The ethnobotanical data were collected through semi-structured interviews with key subjects selected through the “snowball” technique. The availability and species conservation priority was verified by relative density, risk of collection, local use and use of diversity in the forest fragment sampled. It was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Availability; Biodiversity conservation; Therapeutic practices.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602675

The preventive effects of ascorbic acid supplementation on locomotor and acetylcholinesterase activity in an animal model of schizophrenia induced by ketamine
Provedor de dados: 42
Autores: DAMAZIO,LOUYSE S.; SILVEIRA,FLÁVIA R.; CANEVER,LARA; CASTRO,ADALBERTO A. DE; ESTRELA,JADNE M.; BUDNI,JOSIANE; ZUGNO,ALEXANDRA I.
ABSTRACT Studies have shown that schizophrenic patients seem to have nutritional deficiencies. Ascorbic acid (AA) has an important antioxidant effect and neuromodulatory properties. The aim of this study was to evaluate the effects of AA on locomotor activity and the acetylcholinesterase activity (AChE) in an animal model of schizophrenia (SZ). Rats were supplemented with AA (0.1, 1, or 10 mg/kg), or water for 14 days (gavage). Between the 9th and 15th days, the animals received Ketamine (Ket) (25 mg/kg) or saline (i.p). After the last administration (30 min) rats were subjected to the behavioral test. Brain structures were dissected for biochemical analysis. There was a significant increase in the locomotor activity in Ket treated. AA prevented the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Schizophrenia; Ascorbic acid; Ketamine; Hyperlocomotion; Acetylcholinesterase.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301133

Adding palm oil to the diet of sheep alters fatty acids profile on yogurt: Benefits to consumers
Provedor de dados: 42
Autores: BIANCHI,ANDERSON E.; SILVA,ALEKSANDRO S. DA; BIAZUS,ANGELISA H.; RICHARDS,NEILA S.P.S.; PELLEGRINI,LUIS G.; BALDISSERA,MATHEUS D.; MACEDO,VICENTE P.; SILVEIRA,ANDRÉ L.F. DA.
ABSTRACT The aim of this study was to modify the fatty acid profile of yogurt from sheep milk by the inclusion of different concentrations of palm oil into their diet. Thus, thirty-six sheep during lactation were separated in four groups with nine animals each, as described below: the group T0 (0%); the group T2 (inclusion of 2% of palm oil); the group T4 (inclusion of 4% of palm oil) and the group T6 (inclusion of 6% of palm oil). After 60 days of the supplementation, milk samples were collected and yogurt was produced, which was evaluated regarding the concentration of saturated fatty acids (SFA), monounsaturated fatty acids (MFA), and polyunsaturated fatty acids (PFA). A significant reduction (p&lt;0.05) in most SFA and a significant increase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acids; Palm oil; Sheep; Yogurt.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502471

The partitioning of food resources between two rodents in the subtropical region of southern Brazil
Provedor de dados: 42
Autores: ESPINELLI,FÁBIO P.; CORRÊA,FABIANO; COLARES,ELTON P.; COLARES,IONI G.
ABSTRACT The capybara (Hydrochoerus hydrochaeris) and nutria (Myocastor coypus) are herbivorous semi-aquatic rodents. Although these rodents occur in sympatry in southern South America, little is known about how the two species interact in relationship to food resources. In this context, the aim of this study was to analyze the food resource overlap, the feeding strategy and the diversity of the diet of capybaras and nutria. A micro-histological analysis of feces was used to study the diets. A total of 48 plant species belonging to 10 families were identified in the diet of H. hydrochaeris, and a total of 49 species belonging to 14 families were identified in the diet of M. coypus. According to the Amundsen graphical method, both rodents adopted a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet overlap; Feeding strategy; Herbivores; Micro-histological analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100191

Genetic parameters in female reproductive traits of Nile tilapia (Oreochromis niloticus)
Provedor de dados: 42
Autores: YOSHIDA,GRAZYELLA M.; OLIVEIRA,CARLOS A.L. DE; KUNITA,NATALÍ M.; RIZZATO,GABRIEL S.; RIBEIRO,RICARDO P.
ABSTRACT Genetic parameters for reproductive traits in female Nile tilapia were estimated in this study using Bayesian inference method. The data set presented information from 451 Nile tilapia females that were evaluated at two different places in Maringá - Paraná - Brazil (hapas of 1 and 10 m³) and at one location in Alfenas - Minas Gerais - Brazil. A spawning examination was conducted once a week from October 2012 to March 2013 for a total of 23 weeks of evaluation. Single-trait analyses for spawning success, multiple spawning, spawning frequency, and volume of eggs/female were performed by using the software MTGSAM Threshold. The heritability estimates were 0.14, 0.16, 0.53, and 0.08 for spawning success, multiple spawning, spawning frequency and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bayesian Inference; Heritability; Oreochromis niloticus; Repeatability; Spawning.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502515

Paleoenvironmental Evolution of Continental Carbonates in West-Central Brazil
Provedor de dados: 42
Autores: OLIVEIRA,EMILIANO C.; ROSSETTI,DILCE F.; UTIDA,GISELLE.
ABSTRACT This paper presents a sedimentological and stratigraphical study of Quaternary (Middle to Late Pleistocene/Holocene) continental carbonates outcrops inside Pantanal Basin and its surroundings, especially in Serra da Bodoquena, Pantanal do Miranda and Corumbá/Ladário plateau, in the state of Mato Grosso do Sul, as well as in Serra das Araras, in the state of Mato Grosso. The aim is to understand the depositional paleoenvironments and analyse climate and tectonic influences in their genesis and evolution. The results show that the deposition of these continental carbonates started in the Middle to Late Pleistocene and have continued, with some interruptions, until the present days. Sedimentary successions were identified in the different areas,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central Brazil; Continental carbonates; Holocene; Paleoenvironments; Pantanal Basin; Pleistocene.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200407

Richness and density of aquatic benthic macroinvertebrates after exposure to fungicides and insecticides in rice paddy fields
Provedor de dados: 42
Autores: WANDSCHEER,ALANA C.D.; MARCHESAN,ENIO; SANTOS,SANDRO; ZANELLA,RENATO; SILVA,MARÍLIA F.; LONDERO,GUILHERME P.; DONATO,GABRIEL.
ABSTRACT The objective of this study was to verify the richness and density of aquatic benthic macroinvertebrates after exposure to fungicides and insecticides of the rice paddy fields. In the crop seasons of 2012/13 and 2013/14, field experiments were performed, which consisted of single-dose applications of the fungicides trifloxystrobin + tebuconazole and tricyclazole, and the insecticides lambda-cyhalothrin + thiamethoxam and diflubenzuron, in 10 m2 experimental plots, over rice plants in the R3 stage. Control plots with and without rice plants were maintained in order to simulate a natural environment. Soil samples were collected during rice cultivation for assessment of the macroinvertebrate fauna. Chemical-physical parameters assessed in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic invertebrates; Lowlands; Oryza sativa L.; Pesticides.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100355

Citizen science participation in research in the environmental sciences: key factors related to projects’ success and longevity
Provedor de dados: 42
Autores: CUNHA,DAVI G.F.; MARQUES,JONATAS F.; RESENDE,JULIANA C. DE; FALCO,PATRÍCIA B. DE; SOUZA,CHRISLAINE M. DE; LOISELLE,STEVEN A.
ABSTRACT The potential impacts of citizen science initiatives are increasing across the globe, albeit in an imbalanced manner. In general, there is a strong element of trial and error in most projects, and the comparison of best practices and project structure between different initiatives remains difficult. In Brazil, the participation of volunteers in environmental research is limited. Identifying the factors related to citizen science projects’ success and longevity within a global perspective can contribute for consolidating such practices in the country. In this study, we explore past and present projects, including a case study in Brazil, to identify the spatial and temporal trends of citizen science programs as well as their best practices and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citizen science; Community-based monitoring; Environmental management; Public participation; Volunteer data collection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502229

Premaxillary crest variation within the Wukongopteridae (Reptilia, Pterosauria) and comments on cranial structures in pterosaurs
Provedor de dados: 42
Autores: CHENG,XIN; JIANG,SHUNXING; WANG,XIAOLIN; KELLNER,ALEXANDER W.A.
ABSTRACT Cranial crests show considerable variation within the Pterosauria, a group of flying reptiles that developed powered flight. This includes the Wukongopteridae, a clade of non-pterodactyloids, where the presence or absence of such head structures, allied with variation in the pelvic canal, have been regarded as evidence for sexual dimorphism. Here we discuss the cranial crest variation within wukongopterids and briefly report on a new specimen (IVPP V 17957). We also show that there is no significant variation in the anatomy of the pelvis of crested and crestless specimens. We further revisit the discussion regarding the function of cranial structures in pterosaurs and argue that they cannot be dismissed a priori as a valuable tool for species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wukongopteridae; Pterosauria; Cranial crest; Sexual dimorphism; China.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100119

Effect of Syzygium cumini leaves on laying hens performance and egg quality
Provedor de dados: 42
Autores: FREITAS,EDNARDO R.; FERNANDES,DANILO R.; SOUZA,DAVYD H.; DANTAS,FRANCISCO D.T.; SANTOS,REBECA C.; OLIVEIRA,GILSON B.; CRUZ,CARLOS EDUARDO B.; BRAZ,NÁDIA M.; CÂMARA,LORENA F.; NASCIMENTO,GERMANO A.J.; WATANABE,PEDRO H.
ABSTRACT The aim of this study was to evaluate the effect of Syzygium cumini leaves (SCL) in laying hens diets on productive performance, egg quality and lipid oxidation of yolk. A total of 108 Hysex White laying hens were distributed in a completely randomized design with three treatments and six replicates of six birds each. The treatments consisted of SCL inclusion at dietary levels of 0, 5 and 10 g/kg. There was no significant effect of SCL inclusion on feed intake, laying percentage, weight and egg mass, feed conversion ratio, Haugh units, specific gravity, percentage of yolk, albumen and egg shells and shell thickness. However, the inclusion of SCL significantly influenced the yolk color and yolk lipid oxidation measured by TBARS values. Yolk color...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Egg quality; Phytogenic additives; Yolk color.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502479

Antifungal activities of the essential oil and its fractions rich in sesquiterpenes from leaves of Casearia sylvestris Sw.
Provedor de dados: 42
Autores: PEREIRA,FLAVIANE G.; MARQUETE,RONALDO; DOMINGOS,LEVY T.; ROCHA,MARCO E.N.; FERREIRA-PEREIRA,ANTONIO; MANSUR,ELISABETH; MOREIRA,DAVYSON L.
ABSTRACT Casearia genus (Salicaceae) is found in sub-tropical and tropical regions of the world and comprises about 160-200 species. It is a medicinal plant used in South America, also known as “guaçatonga”, “erva-de-tiú”, “cafezinho-do-mato”. In Brazil, there are about 48 species and 12 are registered in the State of Rio de Janeiro, including Casearia sylvestris Sw. There are many studies related to the chemical profile and cytotoxic activities of extracts from these plants, although few studies about the antifungal potential of the essential oil have been reported. In this work, we have studied the antifungal properties of the essential oil of C. sylvestris leaves, as well as of their fractions, against four yeasts (Saccharomyces cerevisae, Candida...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Candida sp.; Casearia genus; Essential oil; Medicinal plant; Saccharomyces cerevisae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602817

Modeling and mapping basal area of Pinus taeda L. plantation using airborne LiDAR data
Provedor de dados: 42
Autores: SILVA,CARLOS A.; KLAUBERG,CARINE; HUDAK,ANDREW T.; VIERLING,LEE A.; FENNEMA,SCOTT J.; CORTE,ANA PAULA D.
ABSTRACT Basal area (BA) is a good predictor of timber stand volume and forest growth. This study developed predictive models using field and airborne LiDAR (Light Detection and Ranging) data for estimation of basal area in Pinus taeda plantation in south Brazil. In the field, BA was collected from conventional forest inventory plots. Multiple linear regression models for predicting BA from LiDAR-derived metrics were developed and evaluated for predictive power and parsimony. The best model to predict BA from a family of six models was selected based on corrected Akaike Information Criterion (AICc) and assessed by the adjusted coefficient of determination (adj. R²) and root mean square error (RMSE). The best model revealed an adj. R²=0.93 and RMSE=7.74%....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest Inventory; LiDAR metrics; Multiple Linear Regression; Remote Sensing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401895

Hybrid Geoid Model: Theory and Application in Brazil
Provedor de dados: 42
Autores: ARANA,DANIEL; CAMARGO,PAULO O.; GUIMARÃES,GABRIEL N.
Determination of the ellipsoidal height by Global Navigation Satellite Systems (GNSS) is becoming better known and used for purposes of leveling with the aid of geoid models. However, the disadvantage of this method is the quality of the geoid models, which degrade heights and limit the application of the method. In order to provide better quality in transforming height using GNSS leveling, this research aims to develop a hybridization methodology of gravimetric geoid models EGM08, MAPGEO2015 and GEOIDSP2014 for the State of São Paulo, providing more consistent models with GNSS technology. Radial Basis Function (RBF) neural networks were used to obtain the corrector surface, based on differences between geoid model undulations and the undulations obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EGM08; GEOIDSP2014; GNSS leveling; MAPGEO2015; Neural network.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401943

Are the dinosauromorph femora from the Upper Triassic of Hayden Quarry (New Mexico) three stages in a growth series of a single taxon?
Provedor de dados: 42
Autores: MÜLLER,RODRIGO T.
ABSTRACT The lagerpetid Dromomeron romeri and the theropod Tawa hallae are two dinosauromorphs from the Norian (Upper Triassic) of the Chinle Formation, situated in New Mexico, USA. However, a recent study suggests the inclusion of the holotype of D. romeri (GR 218) and paratype (GR 155) and referred (GR 235) specimens of T. hallae in an ontogenetic series of a single species. The specimens GR 218 and GR 155 include just an isolated femur, while GR235 includes femora, pelvis and tail. The inclusion of the specimens in an unique ontogenetic series relies on the putative immature condition and plastic deformation of the specimen GR 218. However, as observed here, the disparity between the femora of D. romeri and T. hallae is considerably higher than those...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chinle Formation; Dinosauria; Dinosauriformes; Lagerpetidae; Norian; Ontogeny.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300835

Phosphate solubilization by endophytic bacteria isolated from banana trees
Provedor de dados: 42
Autores: MATOS,AMANDA D.M.; GOMES,IZABELA C.P.; NIETSCHE,SILVIA; XAVIER,ADELICA A.; GOMES,WELLINGTON S.; DOS SANTOS NETO,JOSÉ A.; PEREIRA,MARLON C.T.
ABSTRACT Forty isolates of endophytic bacteria isolated from banana tree roots were assessed as to their capacity to solubilize phosphate in a solid culture medium supplemented with different inorganic and one organic source of phosphorus. The amount of phosphorus (P) in each liquid medium was quantified, and an indirect assessment of acid phosphatase activity was performed. All assays had a fully randomized design, with three repetitions. Approximately 67.5% of the 40 isolates assessed in solid medium solubilized phosphorus from tricalcium phosphate and 7.5% of the isolates solubilized phosphorus from soy lecithin; no isolates exhibited P solubilization capacity in medium supplemented with iron phosphate. Acid phosphatase activity was detected in 65% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acid phosphatase; Bacillus sp.; Lecithin; Musa spp.; PGPB.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602945

Sugars levels of four sugarcane genotypes in different stem portions during the maturation phase
Provedor de dados: 42
Autores: PEREIRA,LAÍS F.M.; FERREIRA,VILMA M.; OLIVEIRA,NELSON G. DE; SARMENTO,PEDRO L.V.S.; ENDRES,LAURÍCIO; TEODORO,IÊDO.
ABSTRACT Maturation is a characteristic of sugarcane plant (Saccharum spp.) and even when grown under the same soil and climate conditions the varieties differ on the maturation curve. Thus, studies that allow establishing maturation curves of different sugarcane genotypes in the local soil and climate may indicate the proper harvesting period to ensure better quality of the raw material. This study aimed to analyze the levels of soluble sugars during the maturation phase and assess the technological and productivity indexes of four irrigated sugarcane genotypes in the region of Rio Largo, Alagoas. The experiment was conducted in randomized blocks in a 4 x 2 x 5 factorial: four genotypes (RB92579, RB98710, RB99395 and RB961003), two stem portions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fructose; Glucose; Sucrose; Total soluble solid; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301231

A scientific survey on 1550 cases of oral lesions diagnosed in a Brazilian referral center
Provedor de dados: 42
Autores: VASCONCELOS,ARTUR C.; ABURAD,CARLOS; LIMA,IGOR F.P.; SANTOS,SHEILA M.M.; FREITAS FILHO,SILAS ANTONIO J. DE; FRANCO,ADEMIR; RODE,SIGMAR M.; PARANHOS,LUIZ R.
ABSTRACT The present study aimed to perform an epidemiological survey on the prevalence rate of oral lesions diagnosed in a referral center in Brazil and to establish association between the lesions and the age and gender of the affected patients. This analytical observational study analyzed 3521 medical records of anatomopathological exams of the Pathological Anatomy and Cytopathology Laboratory of the Cancer Hospital of the state of Mato Grosso (Brazil), from December 2011 to September 2015. A total of 1550 relevant medical records was detected. Patients aging between 41 and 60 consisted of 42.84% of the sample. Males were more affected than females (60.13%). Inflammatory processess consisted of the most prevalent diagnosis (43.29%), followed by squamous...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diagnosis; Oral medicine; Pathology; Stomatology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401691

Development and evaluation of an inhalation chamber for in vivo tests
Provedor de dados: 42
Autores: SILVA,EDUARDO R. DA; BIZZO,HUMBERTO R.; FERNANDES,PATRÍCIA D.; VEIGA JUNIOR,VALDIR F. DA; LEITÃO,SUZANA G.; OLIVEIRA,DANILO R. DE.
ABSTRACT The bioavailability, toxicity, and therapeutic efficacy of a drug is directly related to its administration route. The pulmonary route can be accessed by inhalation after fumigation, vaporization or nebulization. Thus, pharmacological and toxicological evaluation accessed by an apparatus specifically designed and validated for this type of administration is extremely important. Based on pre-existing models, an inhalation chamber was developed. This presents a central structure with five animal holders. The nebulized air passes directly and continuously through these holders and subsequently to an outlet. Evaluation of its operation was performed using clove essential oil, a nebulizer, and a flow meter. The air within the chamber was collected by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological activities; Gas chromatograph; Headspace; Inhalation chamber; Syzygium aromaticum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401643

CHARACTERIZATION AND INFLUENCE OF SUBTROPICAL PERSIMMON CULTIVARS ON JUICE AND JELLY CHARACTERISTICS
Provedor de dados: 42
Autores: CURI,PAULA N.; TAVARES,BRUNA S.; ALMEIDA,ALINE B.; PIO,RAFAEL; PASQUAL,MOACIR; PECHE,PEDRO M.; SOUZA,VANESSA R.
ABSTRACT To increase the availability to consumers and add more value to persimmon (Diospyros kaki L.), which is a very perishable and seasonal fruit and in order to identify which cultivars grown in subtropical regions are more suitable for processing in the form of juice and jelly, as well as understand what the consumer profile is for these products, the objective of this study was to evaluate the influence of different persimmon cultivars (Rama Forte, Mel, Guiombo and Taubaté) grown in subtropical regions of Brazil on the physicochemical characteristics, rheological properties and sensory acceptance of the resulting juice and jelly in order to identify cultivars with the greatest potential for industrial use. The different studied persimmon cultivars...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Persimmon; Subtropical; Jelly; Juice; Processing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301205

Maize dry matter production and macronutrient extraction model as a new approach for fertilizer rate estimation
Provedor de dados: 42
Autores: MARTINS,KARLA V.; DOURADO-NETO,DURVAL; REICHARDT,KLAUS; FAVARIN,JOSÉ L.; SARTORI,FELIPE F.; FELISBERTO,GUILHERME; MELLO,SIMONE C.
ABSTRACT Decision support for nutrient application remains an enigma if based on soil nutrient analysis. If the crop could be used as an auxiliary indicator, the plant nutrient status during different growth stages could complement the soil test, improving the fertilizer recommendation. Nutrient absorption and partitioning in the plant are here studied and described with mathematical models. The objective of this study considers the temporal variation of the nutrient uptake rate, which should define crop needs as compared to the critical content in soil solution. A uniform maize crop was grown to observe dry matter accumulation and nutrient content in the plant. The dry matter accumulation followed a sigmoidal model and the macronutrient content a power...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maize; Fertilizer rate estimation; Nutrient content; Nutrient partition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200705

Agronomic viability of New Zealand spinach and kale intercropping
Provedor de dados: 42
Autores: CECÍLIO FILHO,ARTHUR B.; BIANCO,MATHEUS S.; TARDIVO,CAROLINE F.; PUGINA,GABRIEL C.M.
ABSTRACT The intercropping is a production system that aims to provide increased yield with less environmental impact, due to greater efficiency in the use of natural resources and inputs involved in the production process. An experiment was carried out to evaluate the agronomic viability of kale and New Zealand spinach intercropping as a function of the spinach transplanting time. (0, 14, 28, 42, 56, 70, 84 and 98 days after transplanting of the kale). The total yield (TY) and yield per harvest (YH) of the kale in intercropping did not differ from those obtained in monoculture. The spinach TY was influenced by the transplanting time, the earlier the transplanting, the higher the TY. The spinach YH was not influenced by the transplanting time, but rather...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tetragonia expansa; Brassica oleracea var. acephala; Cultivation system; Land use efficiency; Competition index.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602975

Bioethanol production with different dosages of the commercial Acrylamide polymer compared to a Bioextract in clarifying sugarcane juice
Provedor de dados: 42
Autores: FREITA,CRISTHYANE M.; FREITA,LIDYANE A.; TRALLI,LETICIA F.; SILVA,ALINE F.; MENDES,FRANCIELE Q.; TEIXEIRA,VITOR; MUTTON,MARCIA J.R.
ABSTRACT One of the most important steps is to clarify the juice, which are added synthetic polymer acrylamide base, aiming the fast settling of impurities present in the juice. However, this input is expensive and may have carcinogenic and neurotoxic actions to humans. The search for new natural flocculants that have similarity with the commercial product is of great value. A bioextract that may be promising and has coagulant action is the Moringa oleifera Lam. In this context, the objective of the research was to evaluate the consequences of the use of moringa seed extracts and various concentrations of commercial polymer, such as sedimentation aids in clarifying sugarcane juice in the ethanol production, comparing the efficiency of the bioextract...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofuels; Biopolymers; Juice treatment; Moringa oleifera Lam.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603093

Karyotype analysis in Bignonieae (Bignoniaceae): chromosome numbers and heterochromatin
Provedor de dados: 42
Autores: CORDEIRO,JOEL M.P.; KAEHLER,MIRIAM; SOUZA,GUSTAVO; FELIX,LEONARDO P.
ABSTRACT Chromosome numbers and heterochromatin banding pattern variability have been shown to be useful for taxonomic and evolutionary studies of different plant taxa. Bignonieae is the largest tribe of Bignoniaceae, composed mostly by woody climber species whose taxonomies are quite complicated. We reviewed and added new data concerning chromosome numbers in Bignonieae and performed the first analyses of heterochromatin banding patterns in that tribe based on the fluorochromes chromomycin A3 (CMA) and 4’-6-diamidino-2-phenylindole (DAPI). We confirmed the predominant diploid number 2n = 40, as well as variations reported in the literature (dysploidy in Mansoa [2n = 38] and polyploidy in Dolichandra ungis-cati [2n = 80] and Pyrostegia venusta [2n = 80])....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytotaxonomy; Fluorochromes; Neotropical lianas; Ploidy variation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602697

Elemental composition of vegetables cultivated over coal-mining waste
Provedor de dados: 42
Autores: ZOCCHE,JAIRO J.; ROHR,PAULA; DAMIANI,ADRIANI P.; LEFFA,DANIELA D.; MARTINS,MIRIAM C.; ZOCCHE,CAROLINE M.; TEIXEIRA,KARINA O.; BORGES,GABRIELA D.; JESUS,MAIELLEN M. DE; SANTOS,CARLA E.I. DOS; DIAS,JOHNNY F.; ANDRADE,VANESSA M. DE.
ABSTRACT We assessed elemental composition of the liver in mice subjected to one-time or chronic consumption of the juice of vegetables cultivated in a vegetable garden built over deposits of coal waste. Lactuca sativa L. (lettuce), Beta vulgaris L. (beet), Brassica oleracea L. var. italica (broccoli) and Brassica oleracea L. var. acephala (kale) were collected from the coal-mining area and from a certified organic farm (control). Elemental composition was analyzed by particle-induced X-ray emission (PIXE) method. Concentrations of Mg, S, and Ca of mice subjected to one-time consumption of broccoli and concentrations of these same elements plus Si of mice receiving kale were higher in the coal-mining area. Concentrations of P, K, and Cu were increase after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coal; Anthropogenic soil; Trace elements; Heavy metals; Plants; PIXE.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502383

In vitro and cellular activities of the selected fruits residues for skin aging treatment
Provedor de dados: 42
Autores: LOURITH,NATTAYA; KANLAYAVATTANAKUL,MAYUREE; CHAIKUL,PUXVADEE; CHANSRINIYOM,CHAISAK; BUNWATCHARAPHANSAKUN,PICHAPORN.
ABSTRACT Peel extracts of litchi and rambutan, and that of tamarind seed coat were investigated in relation to their utility in skin-aging treatments. Standardized extracts of tamarind were significantly (p &lt; 0.05) more efficient at O2 •- scavenging (IC50 = 27.44 ± 0.09) than those of litchi and rambutan (IC50 = 29.57 ± 0.30 and 39.49 ± 0.52 μg/ml, respectively) and the quercetin standard (IC50 = 31.88 ± 0.15 μg/ml). Litchi extract proved significantly (p &lt; 0.05) more effective for elastase and collagenase inhibition (88.29 ± 0.25% and 79.46 ± 0.92%, respectively) than tamarind (35.43 ± 0.68% and 57.69 ± 5.97%) or rambutan (31.08 ± 0.38% and 53.99 ± 6.18%). All extracts were safe to human skin fibroblasts and inhibit MMP-2, with litchi extract...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agro-industrial waste; Antioxidant; Cellular activities; Cosmetics; Enzyme inhibitions; Fruit crop.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200577

Productive performance of Holstein calves finished in feedlot or pasture
Provedor de dados: 42
Autores: DIAS,ANA MARIA O.; MENEZES,LUIS F.G. DE; PARIS,WAGNER; SANTOS,PRISCILA V. DOS; BIESEK,RONALDO R.; MAFIOLETTI,RENAN D.; MARCHESAN,RENATO.
ABSTRACT The use of animals from dairy farms is an alternative to meat production since it provides an increment of total income for farmers. This study aims to evaluate the performance of Holstein calves finished in two feeding systems (feedlot or pasture). Forty-three animals with 58 days old and 57 kg were divided in two treatments: 23 animals finished in feedlot with corn silage plus concentrate based on corn and soybean meal (40:60); 20 animals kept in cultivated pastures according to the period of the year: Italian ryegrass (Lolium multiflorum) and pearl millet (Pennisetum americanum) with supplementation with the same feedlot-concentrate at 1% body weight. Animals were slaughtered with 200 kg. Dry matter and nutrient intake were determined, with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Forage intake; Chromium oxide; Feeding systems.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401935

Development of EPIC-PCR Markers for Lutjanus purpureus (Lutjanidae-Perciformes) and their Potential Applicability in Population Analyses
Provedor de dados: 42
Autores: SILVA,RAIMUNDO DA; SILVA,DANILLO; VENEZA,IVANA; SAMPAIO,IRACILDA; SCHNEIDER,HORACIO; GOMES,GRAZIELLE.
ABSTRACT In the present study, a novel set of eight EPIC primers were developed for Lutjanus purpureus and assayed in five other marine teleosts including three lutjanids, one scianid and one anablepid. Most of the genomic regions used in this study presented genetic diversity indexes equal or greater than the intragenic regions commonly used in population genetics studies. Moreover, six out of eight markers showed cross-amplification with other taxa. Thus, the primers described here may be used to elucidate questions at the intraspecific level for a large number of taxa.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EPIC-PCR; Intron; Lutjanus; Southern Red Snapper.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502095

Evaluation of the anti-osteoporotic effect of Ginkgo biloba L. in Wistar rats with glucocorticoid-induced-osteoporosis by bone densitometry using dual-energy x-ray absorptiometry (DEXA) and mechanical testing
Provedor de dados: 42
Autores: LUCINDA,LEDA M.F.; AARESTRUP,BEATRIZ J.V.; REBOREDO,MAYCON M.; PAINS,THAIS D.A.; CHAVES,RAPHAEL Z.; REIS,JOÃO E.P.; LOUZADA,MÁRIO J.Q.; GUERRA,MARTHA O.
ABSTRACT Evaluate the effect of the extract of Ginkgo biloba in the bone alkaline phosphatase, bone mineral density, in the mechanical properties of the tibia in rats with glucocorticoid-induced-osteoporosis. After osteoporosis induction, the rats were divided into five groups: Osteoporosis; EGb1 (28 mg/Kg); EGb2 (56 mg/Kg); alendronate (0.2 mg/animal) and control. The animals were treated during 20 and 30 days. The control group was compared with the osteoporosis’s (Student’s t-test), while the other were analyzed by ANOVA test followed by Tukey/Dunnett’T3 (p&lt;0.05). In the osteoporosis group the bone alkaline phosphatase, bone mineral density, the bone stiffness, the maximum load and the resilience were reduced. The bone alkaline phosphatase values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone density; DEXA scan; Ginkgo biloba; Osteoporosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602833

Early Devonian (Late Emsian) shark fin remains (Chondrichthyes) from the Paraná Basin, southern Brazil
Provedor de dados: 42
Autores: RICHTER,MARTHA; BOSETTI,ELVIO P.; HORODYSKI,RODRIGO S.
ABSTRACT We report on the pioneering discovery of Devonian fish remains in the Paraná Basin, which represents the southernmost record of fishes from that period in mainland South America. The material comes from an outcrop at the lower portion of the São Domingos Formation, within Sequence C of the Paraná-Apucarana sub-basin in Tibagi, State of Paraná. Marine invertebrates are abundant in the same strata. The dark colored fish remains were collected in situ and represent natural moulds of partially articulated shark fin rays (radials). No elements such as teeth or prismatic cartilage have been preserved with the fins rays. This can be attributed to the dissolution of calcium-phosphatic minerals at the early stages of fossilization due to diagenetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chondrichthyes; Devonian; Gondwana; Paraná Basin; Southern Brazil; Taphonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100103

The Qualis system: a perspective from a multidisciplinary journal
Provedor de dados: 42
Autores: KELLNER,ALEXANDER W.A.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401339

A possible relationship between gluconeogenesis and glycogen metabolism in rabbits during myocardial ischemia
Provedor de dados: 42
Autores: AGUIAR,RAQUEL R. DE; VALE,DANIELA F.; SILVA,RENATO M. DA; MUNIZ,YOLANDA P.; ANTUNES,FERNANDA; LOGULLO,CARLOS; OLIVEIRA,ANDRÉ L.A.; ALMEIDA,ADRIANA J. DE.
ABSTRACT Ischemia is responsible for many metabolic abnormalities in the heart, causing changes in organ function. One of modifications occurring in the ischemic cell is changing from aerobic to anaerobic metabolism. This change causes the predominance of the use of carbohydrates as an energy substrate instead of lipids. In this case, the glycogen is essential to the maintenance of heart energy intake, being an important reserve to resist the stress caused by hypoxia, using glycolysis and lactic acid fermentation. In order to study the glucose anaerobic pathways utilization and understand the metabolic adaptations, New Zealand white rabbits were subjected to ischemia caused by Inflow occlusion technique. The animals were monitored during surgery by pH and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gene expression; Glycogen; Ischemia; Myocardium; Rabbit.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401683

Editors of Brazilian journals - a hard life that is getting harder!
Provedor de dados: 42
Autores: KELLNER,ALEXANDER W.A.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100001

Soil-vegetation relationships and community structure in a "terra-firme"-white-sand vegetation gradient in Viruá National Park, northern Amazon, Brazil
Provedor de dados: 42
Autores: MENDONÇA,BRUNO A.F. DE; FERNANDES FILHO,ELPÍDIO I.; SCHAEFER,CARLOS E.G.R.; MENDONÇA,JÚLIA G.F. DE; VASCONCELOS,BRUNO N.F.
ABSTRACT Viruá National Park encompasses a vast and complex system of hydromorphic sandy soils covered largely by the white sand vegetation ("Campinarana") ecosystem. The purpose of this study was to investigate a vegetation gradient of "terra-firme"-white sand vegetation at the Viruá National Park. Nine plots representing three physiognomic units were installed for floristic and phytosociological surveys as well as to collect composite soil samples. The data were subjected to assessments of floristic diversity and similarity, phytosociological parameters and to statistical analyses, focused on principal components (PC) and canonical correspondence analysis (CCA). The vegetation of the Campinaranas types and Forest differed in biomass and species density....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Campinarana; Canonical correlation; Monodominant species; Phytosociology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301269

Screening of plant extracts and fractions on Aedes aegypti larvae found in the state of Mato Grosso do Sul (linnaeus, 1762) (culicidae)
Provedor de dados: 42
Autores: PORTO,KARLA R. DE ANDRADE; MOTTI,PRISCILLA R.; YANO,MAMI; ROEL,ANTONIA R.; CARDOSO,CLAUDIA A.L.; MATIAS,ROSEMARY.
ABSTRACT The constant use of chemical insecticides for Aedes aegypti control has caused resistance in the mosquito populations. Thus, the objective of this study was to analyze the larvicidal potential of extracts and fractions of plants on A. aegypti larvae. The analysis included sixty one extracts and twenty five fractions of fifty botanical species at concentrations of 0.25; 0.12; 0.06 to 0.03 mg mL-1; 4 replications and one negative control of dechlorinate water and 1% DMSO; and a positive control with rotenone. The toxicity index in descending order with LC50 for the most active of the extracts selected were ethanol extract of Ormosea arborea (0.111 mg mL-1) seeds and ethanol extracts of leaves such as Piper hispidum (0.169 mg mL-1), Solanum variabile...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue fever; Insecticidal activity; Insecticide from plant; Larvicidal potential; Disease vector.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300895

Contributions to a Brazilian Code of Conduct for Fieldwork in Geology: an approach based on Geoconservation and Geoethics
Provedor de dados: 42
Autores: MANSUR,KÁTIA L.; PONCIANO,LUIZA C.M.O.; CASTRO,ALINE R.S.F. DE.
ABSTRACT When considering the numerous events that have prohibited the development of scientific projects or caused destruction of outcrops, it is clear that there is rapidly increasing necessity to define a Brazilian Code of Conduct for geological fieldwork. In general, this destruction is attributed to lack of knowledge as to the relevance of geological sites. The aim of this Code of Conduct is to guide geologists to adopt good practices during geoscience activities. Proposed guidelines are based on Codes of Conduct from other countries, mainly Scotland and England, on situations described in papers and on the personal experience of the authors. In this paper 29 points are suggested, in order to guarantee that fieldwork is conducted in accordance with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geoethics; Geoconservation; Code of conduct; Sustainability principles; Geoheritage; Fieldwork.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200431

Antifungal and antioxidant activity of fatty acid methyl esters from vegetable oils
Provedor de dados: 42
Autores: PINTO,MARIA E.A.; ARAÚJO,STHÉFANE G.; MORAIS,MARCELA I.; SÁ,NÍVEA P.; LIMA,CAROLINE M.; ROSA,CARLOS A.; SIQUEIRA,EZEQUIAS P.; JOHANN,SUSANA; LIMA,LUCIANA A.R.S.
ABSTRACT Fatty acid methyl esters (FAMEs) were obtained from vegetable oils of soybean, corn and sunflower. The current study was focused on evaluating the antifungal activity of FAMEs mainly against Paracoccidioides spp., as well as testing the interaction of these compounds with commercial antifungal drugs and also their antioxidant potential. FAMEs presented small IC50 values (1.86-9.42 μg/mL). All three FAMEs tested showed antifungal activity against isolates of Paracoccidioides spp. with MIC values ranging from 15.6-500 µg/mL. Sunflower FAMEs exhibited antifungal activity that extended also to other genera, with an MIC of 15.6 μg/mL against Candida glabrata and C. krusei and 31.2 μg/mL against C. parapsilosis. FAMEs exhibited a synergetic effect with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antifungal; Antioxidant; Fatty acid methyl esters; Vegetable oils.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401671

Surface, thermal and hemocompatible properties of novel single stage electrospun nanocomposites comprising polyurethane blended with bio oilTM
Provedor de dados: 42
Autores: AYYAR,MANIKANDAN; MANI,MOHAN PRASATH; JAGANATHAN,SARAVANA KUMAR; RATHINASAMY,RAJASEKAR; KHUDZARI,AHMAD ZAHRAN; KRISHNASAMY,NAVANEETHA PANDIYARAJ.
ABSTRACT In this work, the physicochemical and blood compatibility properties of prepared PU/Bio oil nanocomposites were investigated. Scanning electron microscope (SEM) studies revealed the reduction of mean fiber diameter (709 ± 211 nm) compared to the pristine PU (969 nm ± 217 nm). Fourier transform infrared spectroscopy (FTIR) analysis exposed the characteristic peaks of pristine PU. Composite peak intensities were decreased insinuating the interaction of the bio oilTM with the PU. Contact angle analysis portrayed the hydrophobic nature of the fabricated patch compared to pristine PU. Thermal gravimetric analysis (TGA) depicted the better thermal stability of the novel nanocomposite patch and its different thermal behavior in contrast with the pristine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyurethane; Bio oilTM; Nanocomposite; Atomic force microscopy; Wound healing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502411

Oxidative stress responses of juvenile tambaqui Colossoma macropomum after short-term anesthesia with benzocaine and MS-222
Provedor de dados: 42
Autores: STRINGHETTA,GIOVANNA R.; BARBAS,LUIS A.L.; MALTEZ,LUCAS C.; SAMPAIO,LUÍS A.; MONSERRAT,JOSÉ M.; GARCIA,LUCIANO O.
ABSTRACT The present study aimed to evaluate the effects of benzocaine and tricaine methanesulfonate on oxidative stress parameters of juvenile tambaqui tissues. Fish (n=80) were anesthetized with benzocaine (100 mg L-1) or tricaine (240 mg L-1) and two control groups were used (non-anesthetized fish and fish exposed to ethanol-only). After anesthetic induction 10 fish/anesthetic were euthanized after 3, 12 and 24 hours post-anesthesia and tissue samplings (gills, liver and brain) were performed. Samples were submitted to analyses of enzyme activity glutathione-S-transferase (GST), cellular lipid peroxidation (TBARS) and total antioxidant capacity (ACAP). ACAP increased in gills of benzocaine treatment after 12 hours. The liver showed a reduction in ACAP...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anesthetics; Fish; GST; Lipid peroxidation; Total antioxidant capacity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502209

Propolis from Southwest of Parana produced by selected bees: Influence of seasonality and food supplementation on antioxidant activity and phenolic profile
Provedor de dados: 42
Autores: CALEGARI,MATHEUS A.; PRASNIEWSKI,ANACLARA; SILVA,CLEIDIANE DA; SADO,RICARDO Y.; MAIA,FABIANA M.C.; TONIAL,LARISSA M.S.; OLDONI,TATIANE L.C.
ABSTRACT Propolis produced by selected bees Apis mellifera were collected from March to June of 2013 and in March of 2015 and analyzed in order to evaluate the influence of climate, colony of origin, and food supplementation of colonies on the content of total phenolic and flavonoid by chromatographic analysis and antioxidant activity by radical scavenging of 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH) and 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and ferric reducing antioxidant power (FRAP) methods. The Principal Component Analysis (PCA) was carried out with propolis collected in 2013 and two clusters were formed. Propolis produced in the months of March and April showed a higher content of total phenolic compounds (TPC) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apis mellifera; Ethanolic extract; Polyphenols; Principal component analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100045

Predicting of biomass in Brazilian tropical dry forest: a statistical evaluation of generic equations
Provedor de dados: 42
Autores: LIMA,ROBSON B. DE; ALVES JÚNIOR,FRANCISCO T.; OLIVEIRA,CINTHIA P. DE; SILVA,JOSÉ A.A. DA; FERREIRA,RINALDO L.C.
ABSTRACT Dry tropical forests are a key component in the global carbon cycle and their biomass estimates depend almost exclusively of fitted equations for multi-species or individual species data. Therefore, a systematic evaluation of statistical models through validation of estimates of aboveground biomass stocks is justifiable. In this study was analyzed the capacity of generic and specific equations obtained from different locations in Mexico and Brazil, to estimate aboveground biomass at multi-species levels and for four different species. Generic equations developed in Mexico and Brazil performed better in estimating tree biomass for multi-species data. For Poincianella bracteosa and Mimosa ophthalmocentra, only the Sampaio and Silva (2005) generic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Above-ground biomass; Allometric models; Caatinga; Forest management; Statistical validation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401815

Pathogenic Vibrio species isolated from estuarine environments (Ceará, Brazil) - antimicrobial resistance and virulence potential profiles
Provedor de dados: 42
Autores: MENEZES,FRANCISCA G.R. DE; RODRIGUEZ,MARINA T.T.; CARVALHO,FÁTIMA C.T. DE; REBOUÇAS,ROSA H.; COSTA,RENATA A.; SOUSA,OSCARINA V. DE; HOFER,ERNESTO; VIEIRA,REGINE H.S.F.
ABSTRACT Detection of virulent strains associated with aquatic environment is a current concern for the management and control of human and animal health. Thus, Vibrio diversity was investigated in four estuaries from state of Ceará (Pacoti, Choró, Pirangi and Jaguaribe) followed by antimicrobial susceptibility to different antimicrobials used in aquaculture and detection of main virulence factors to human health. Isolation and identification were performed on TCBS agar (selective medium) and dichotomous key based on biochemical characteristics, respectively. Nineteen strains of genus Vibrio were catalogued. Vibrio parahaemolyticus (Choró River) and V. alginolyticus (Pacoti River) were the most abundant species in the four estuaries. All strains were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vibrio spp.; Pathogen; Estuaries; Public health; Water.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301175

Efficiency of essential oils of Ocimum basilicum and Cymbopogum flexuosus in the sedation and anaesthesia of Nile tilapia juveniles
Provedor de dados: 42
Autores: NETTO,JOSÉ D. LIMMA; OLIVEIRA,REBECA S.M.; COPATTI,CARLOS EDUARDO.
ABSTRACT This study aimed to verify the sedative and anaesthetic effect of the essential oils of basil (Ocimum basilicum) (EOOB) and lemongrass (Cymbopogum flexuosus) (EOCF) in Nile tilapia juveniles. The fish were transferred to aquaria containing different concentrations of each essential oil: 10, 25, 50, 100, 200, 400 and 600 μL L-1. The time of sedation ranged from 7 to 31 seconds and the recommended concentration was 10 or 25 μL L-1 for both essential oils. The best times for anaesthesia and recovery were found for the concentrations of 400 μL L-1 for EOOB (135.2 and 199.1 seconds, respectively) and 600 μL L-1 for EOCF (327.1 and 374.8 seconds, respectively). In conclusion, we recommend the use of EOOB and EOCF for the sedation and anaesthesia of Nile...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sedation; Recovery; Basil; Lemongrass.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602971

Melipona mondury produces a geopropolis with antioxidant, antibacterial and antiproliferative activities
Provedor de dados: 42
Autores: SANTOS,TÁSSIA L.A. DOS; QUEIROZ,RAPHAEL F.; SAWAYA,ALEXANDRA C.H.F.; LOPEZ,BEGOÑA GIMENEZ-CASSINA; SOARES,MILENA B.P.; BEZERRA,DANIEL P.; RODRIGUES,ANA CAROLINA B.C.; PAULA,VANDERLÚCIA F. DE; WALDSCHMIDT,ANA MARIA.
ABSTRACT Geopropolis is a special type of propolis produced by stingless bees. Several pharmacological properties have been described for different types of geopropolis, but there have been no previous studies of the geopropolis from Melipona mondury. In this study, we investigated the antioxidant, antibacterial, and antiproliferative activities of M. mondury geopropolis, and determined its chemical profile. The antioxidant activity was determined using in vitro ABTS·+, ·DPPH, and β-carotene/linoleic acid co-oxidation methods. The antibacterial activity was determined using a microdilution method with Pseudomonas aeruginosa, Staphylococcus aureus, and methicillin-resistant S. aureus. The antiproliferative effect was determined in tumor cell lines using the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibacterial; Antioxidant; Antiproliferative; Geopropolis; Melipona mondury.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502247

Reassessment and Relationships of †Scutatuspinosus itapagipensis (Teleostei, Clupeomorpha, †Ellimmichthyiformes) from the Neocomian of Recôncavo Basin, Northeastern Brazil
Provedor de dados: 42
Autores: FIGUEIREDO,FRANCISCO J. DE; RIBEIRO,DOUGLAS R.M.
ABSTRACT Clupeomorphs are found in many assemblages of the northeastern Brazil, whose ages range from the Neocomian to Paleogene. Ten species were described. Among them †Scutatuspinosus itapagipensis, a torpedo-like fish found in shales of the Marfim Formation from Bahia, remains poorly known. At first it was positioned within †Scutatuspinosinae and indicated as closely related to †Diplomystus. Diagnoses for the subfamily and genus were based on certain characters masking relationships. Recently it was placed in †Ellimmichthyiformes, but its systematic position remains controversial. We furnish additional data and restorations together with a parsimony analysis with TNT program, using 60 unordered and unweighted characters from selected species of 13...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: †Scutatuspinosus itapagipensis; Osteology; Systematics; Recôncavo Basin; Lower Cretaceous.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300799

Species richness and composition of epiphytic bryophytes in flooded forests of Caxiuanã National Forest, Eastern Amazon, Brazil
Provedor de dados: 42
Autores: CERQUEIRA,GABRIELA R.; ILKIU-BORGES,ANNA LUIZA; FERREIRA,LEANDRO V.
ABSTRACT This study aimed to compare the richness and composition of the epiphytic bryoflora between várzea and igapó forests in Caxiuanã National Forest, Brazilian Amazon. Bryophytes were collected on 502 phorophytes of Virola surinamensis. Average richness per phorophyte and composition between forests and between dry and rainy periods was tested by two-way analysis and by cluster analysis, respectively. In total, 54 species of 13 families were identified. Richness was greater in igapó forest (44 species) compared to várzea forest (38 species). There was no significant difference in the number of species between the studied periods. Cluster analysis showed the bryoflora composition was different between várzea and igapó, but not between dry and rainy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floristics; Liverworts; Mosses; Seasonality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502371

Effects of temperature on the feeding behavior of Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) on Bt and non-Bt cotton plants
Provedor de dados: 42
Autores: RAMALHO,FRANCISCO S.; PACHÚ,JÉSSICA K.S.; LIRA,ALINE C.S.; MALAQUIAS,JOSÉ B.; BRITO,BÁRBARA D.S.; ZANUNCIO,JOSÉ C.; FERNANDES,FRANCISCO S.
ABSTRACT The host acceptance behavior and environmental factors as temperature affect the feeding behavior of Lepidoptera pests. Thus, they must be considered in studies about the risk potential of resistance evolution. The current study sets the differences in the feeding behavior of neonate Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) larvae exposed to Bt and non-Bt cotton plants, under different temperatures and time gap after hatching. Two cotton cultivars were used: the Bt (DP 404 BG - bollgard) and the non-transformed isoline, DP 4049. We found that the feeding behavior of neonate A. argillacea is significantly different between Bt and non-Bt cotton. Based on the number of larvae with vegetal tissue in their gut found on the plant and in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cotton leafworm; Feeding behavior; Transgenic cotton; Blended seed refuge.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602955

Preparation and characterization of alginate and gelatin microcapsules containing Lactobacillus rhamnosus
Provedor de dados: 42
Autores: LOPES,SUSIANY; BUENO,LUCIANO; AGUIAR JÚNIOR,FRANCISCO DE; FINKLER,CHRISTINE.
ABSTRACT This paper describes the preparation and characterization of alginate beads coated with gelatin and containing Lactobacillus rhamnosus. Capsules were obtained by extrusion method using CaCl2 as cross linker. An experimental design was performed using alginate and gelatin concentrations as the variables investigated, while the response variable was the concentration of viable cells. Beads were characterized in terms of size, morphology, scanning electron microscopy (SEM), moisture content, Fourier Transform Infrared Spectrometry (FTIR), thermal behavior and cell viability during storage. The results showed that the highest concentration of viable cells (4.2 x 109 CFU/g) was obtained for 1 % w/v of alginate and 0.1 % w/v of gelatin. Capsules were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Probiotics; Biopolymers; Functional foods; Microencapsulation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401601

Paleoenvironmental evolution of the coastal plain of Southern Brazil: palynological data from a Holocene core in Santa Catarina State
Provedor de dados: 42
Autores: KUHN,LIDIA A.; SOUZA,PAULO A.; CANCELLI,RODRIGO R.; SILVA,WAGNER G.; MACEDO,RENATO B.
ABSTRACT This paper presents a paleoenvironmental reconstruction from palynological analyses of a sedimentary core of Holocene age, drilled at municipality of Garopaba (Santa Catarina), Southern Brazil. A total of 46 samples was collected for palynological analyses in the 450 cm-long core PCSC-3, as also three samples for radiocarbon dating and granulometric analyses. The palynological content includes 84 taxa related to pollen grains of angiosperms (38) and gimnosperm (3), spores of pteridophyta (16) and bryophyta (2), spores of fungi (8), algae (3), acritarchs (3), dinoflagellate cysts (2) and microforaminiferal linings (1). Three specimens of acritarchs are described and illustrated in detail. Three palynological phases were defined based on changes in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal plain; Environmental evolution; Holocene; Palynology; Santa Catarina.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602581

Immune System Dysfunction in the Elderly
Provedor de dados: 42
Autores: FUENTES,EDUARDO; FUENTES,MANUEL; ALARCÓN,MARCELO; PALOMO,IVÁN.
ABSTRACT Human aging is characterized by both physical and physiological frailty that profoundly affects the immune system. In this context aging is associated with declines in adaptive and innate immunity established as immunosenescence. Immunosenescence is a new concept that reflects the age-associated restructuring changes of innate and adaptive immune functions. Thus elderly individuals usually present chronic low-level inflammation, higher infection rates and chronic diseases. A study of alterations in the immune system during aging could provide a potentially useful biomarker for the evaluation of immune senescence treatment. The immune system is the result of the interplay between innate and adaptive immunity, yet the impact of aging on this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aging; Immunosenescence; Adaptive immunity; Innate immunity; Inflammation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100285

Natural decomposition of hornbeam wood decayed by the white rot fungus Trametes versicolor
Provedor de dados: 42
Autores: KARIM,MARYAM; DARYAEI,MEHRDAD GHODSKHAH; TORKAMAN,JAVAD; OLADI,REZA; GHANBARY,MOHAMMAD ALI TAJICK; BARI,EHSAN; YILGOR,NURAL.
ABSTRACT The impacts of white-rot fungi on altering wood chemistry have been studied mostly in vitro. However, in vivo approaches may enable better assessment of the nature of interactions between saprotrophic fungi and host tree in nature. Hence, decayed and sound wood samples were collected from a naturally infected tree (Carpinus betulus L.). Fruiting bodies of the white rot fungus Trametes versicolor grown on the same tree were identified using rDNA ITS sequencing. Chemical compositions (cellulose and lignin) of both sound and infected wood were studied. FT-IR spectroscopy was used to collect spectra of decayed and un-decayed wood samples. The results of chemical compositions indicated that T. versicolor reduced cellulose and lignin in similar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hornbeam wood; Trametes versicolor; Chemical compositions; FT-IR analyses.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602647

Aqueous extract of Psidium guajava leaves: phenolic compounds and inhibitory potential on digestive enzymes
Provedor de dados: 42
Autores: SIMÃO,ANDERSON A.; MARQUES,TAMARA R.; MARCUSSI,SILVANA; CORRÊA,ANGELITA D.
ABSTRACT Leaves of Psidium guajava L. (guava) have been widely used in the popular way for prevention and treatment of various diseases. Thus, the objective of this study was to evaluate the inhibitory potential of leaves aqueous extract from three cultivars of P. guajava (Pedro Sato, Paluma and Século XXI) on α-amylase, α-glycosidase, lipase, and trypsin enzymes, in the presence or not of simulated gastric fluid and to determine the content of phenolic compounds by high performance liquid chromatography. All cultivars presented the same composition in phenolic compounds, but in different proportions. The compounds identified are gallic acid, epigallocatechin gallate, syringic acid, o-coumaric acid, resveratrol, quercetin, and catechin (which was the major...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medicinal plants; Obesity; Α-amylase; Α-glycosidase; Lipase; Trypsin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502155

Mitochondria-rich cells changes induced by nitrite exposure in tambaqui (Colossoma macropomum Cuvier, 1818)
Provedor de dados: 42
Autores: COSTA,OSCAR T.F. DA; RAMOS,CLEVERSON A.; DUNCAN,WALLICE P.; LAMEIRAS,JULIANA L.V.; FERNANDES,MARISA N.
ABSTRACT The gill mitochondria-rich cells of the juvenile Amazonian fish Colossoma macropomum were analyzed using light and scanning and transmission electron microscopy after 96 h exposure to 0.04 and 0.2 mM nitrite. Although the number of mitochondria-rich cells decreased significantly in the lamellar epithelium, no decrease was found in the interlamellar region of the gill filament. Nitrite exposure caused significant reduction on the apical surface area of individual mitochondria-rich cells (p &lt; 0.05), with a resulting reduction of the fractional area of these cells in both the lamellar and filament epithelium. Swelling of endoplasmic reticulum cisternae, nuclear envelope and mitochondria were the main changes found in the mitochondria-rich cells....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cell damage; Fish; Gills; Morphometry; Ultrastructure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300965

Numerical Simulations to Assess ART and MART Performance for Ionospheric Tomography of Chapman Profiles
Provedor de dados: 42
Autores: PROL,FABRICIO S.; CAMARGO,PAULO O.; MUELLA,MARCIO T.A.H.
ABSTRACT The incomplete geometrical coverage of the Global Navigation Satellite System (GNSS) makes the ionospheric tomographic system an ill-conditioned problem for ionospheric imaging. In order to detect the principal limitations of the ill-conditioned tomographic solutions, numerical simulations of the ionosphere are under constant investigation. In this paper, we show an investigation of the accuracy of Algebraic Reconstruction Technique (ART) and Multiplicative ART (MART) for performing tomographic reconstruction of Chapman profiles using a simulated optimum scenario of GNSS signals tracked by ground-based receivers. Chapman functions were used to represent the ionospheric morphology and a set of analyses was conducted to assess ART and MART...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grid-based tomography; Electron density; Ionospheric profile; Chapman function; GNSS; TEC.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401531

Forage potential of native ecotypes of Paspalum notatum and P. guenoarum
Provedor de dados: 42
Autores: STEINER,MARCELO G.; DALL’AGNOL,MIGUEL; NABINGER,CARLOS; SCHEFFER-BASSO,SIMONE M.; WEILER,ROBERTO L.; SIMIONI,CARINE; SCHIFINO-WITTMANN,MARIA TERESA; MOTTA,ÉDER A.M. DA.
ABSTRACT The Paspalum genus includes several species that are important for livestock in Rio Grande do Sul, such as P. notatum and P. guenoarum, typical of native pastures of the Pampa biome. The aim of this study was to investigate forage production and chemical composition of four ecotypes of these species in relation to the cv. ‘Pensacola’ (P. notatum). Ecotypes of P. guenoarum (Azulão and Baio) and P. notatum (André da Rocha and Bagual) and the cv. ‘Pensacola’ were evaluated for two years, during which four cuts/year were made. The work was carried out under field conditions at the Agronomic Experimental Station of the Federal University of Rio Grande do Sul (30°05’S; 51°39’W), in a completely randomized design. P. guenoarum stood out for higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seasonality; Fiber; Forage production dry matter; Crude protein.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401753

Rocinela signata (Isopoda: Aegidae) parasitizing the gills of the spotted goatfish Pseudupeneus maculatus (Actinopterygii: Mullidae) in Northeastern Brazil
Provedor de dados: 42
Autores: CARDOSO,LUCAS; MARTINS,MAURÍCIO L.; GOLZIO,JÉSSICA E.S. DE AQUÍNO; BOMFIM,CAROLINA N.C.; OLIVEIRA,RICARDO L.M. DE; SANTOS,LEILANE B.G. DOS; LACERDA,ANA CAROLINA F.
ABSTRACT Parasitic isopods of fishes usually show wide distribution and low host specificity. This study investigated the occurrence of gill parasites in 120 specimens of spotted goatfish Pseudupeneus maculatus, marine fish of great economic importance for fishery community. The fish were captured monthly in the Coast of Pernambuco State, Northeast Brazil, between October 2012 and September 2013. Eleven isopods were found and identified as Rocinela signata. We observed lower infections in the gills of P. maculatus (prevalence 8.3%, mean intensity 1.6±0.3 and mean abundance 0.1±0.3) when compared to other studies of different host fishes from geographically close locations. This parasite has been reported from a wide variety of fish species, not only in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coast of Pernambuco; Crustacean; Marine fish; Parasitism.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502075

Thidiazuron (TDZ) increases fruit set and yield of ‘Hosui’ and ‘Packham’s Triumph’ pear trees
Provedor de dados: 42
Autores: PASA,MATEUS S.; SILVA,CARINA P. DA; CARRA,BRUNO; BRIGHENTI,ALBERTO F.; SOUZA,ANDRÉ LUIZ K. DE; PETRI,JOSÉ LUIZ.
ABSTRACT The low fruit set is one of the main factors leading to poor yield of pear orchards in Brazil. The exogenous application of thidiazuron (TDZ) and aminoethoxyvinilglycine (AVG) has shown promising results in some pear cultivars and other temperate fruit trees. The objective of this study was to evaluate the effect of TDZ and AVG on fruit set, yield, and fruit quality of ‘Hosui’ and ‘Packham’s Triumph’ pears. The study was performed in a commercial orchard located in São Joaquim, SC. Plant material consisted of ‘Hosui’ and ‘Packham’s Triumph’ pear trees grafted on Pyrus calleryana. Treatments consisted on different rates of TDZ (0 mg L-1, 20 mg L-1, 40 mg L-1 and 60 mg L-1) sprayed at full bloom for both cultivars. An additional treatment of AVG 60...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus sp.; Fruit drop; Plant growth regulators; Cytokinin; Fruit quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603103

Latin American scientific contribution to ecology
Provedor de dados: 42
Autores: WOJCIECHOWSKI,JULIANA; CESCHIN,FERNANDA; PERETO,SUELEN C.A.S.; RIBAS,LUIZ G.S.; BEZERRA,LUIS A.V.; DITTRICH,JAQUELINE; SIQUEIRA,TADEU; PADIAL,ANDRÉ A.
ABSTRACT Latin America embodies countries of special interest for ecological studies, given that areas with great value for biodiversity are located within their territories. This highlights the importance of an evaluation of ecological research in the Latin America region. We assessed the scientific participation of Latin American researchers in ecological journals, patterns of international collaboration, and defined the main characteristics of the articles. Although Latin American publications have increased in fourteen years, they accounted up to 9% of publications in Ecology. Brazil leaded the scientific production in Latin America, followed by Argentina and Mexico. In general, Latin American articles represented a low percentage of most journals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Article citations; International collaboration; Journal impact factor; Neotropics; Research policies; Scientometrics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602663

Effects of electroacupuncture on stress and anxiety-related responses in rats
Provedor de dados: 42
Autores: BASSETTO,RICARDO M.; WSCIEKLICA,TATIANA; POUZA,KATHLEIN C.P.; ORTOLANI,DANIELA; VIANA,MILENA B.; CESPEDES,ISABEL C.; SPADARI,REGINA C.
ABSTRACT The aim of this work was to investigate if eletroacupuncture at PC6 would modulate the stress-induced anxiety-like behavior and the level of activation of several brain areas. Rats were distributed in groups: control; submitted to immobilization; submitted to immobilization and eletroacupuncture at PC6 or at the tail. Immobilization increased grooming and decreased stretched attend postures and the time spent in the open arms of the ele-vated plus-maze. Eletroacupuncture at PC6 or tail canceled the effect of immobilization on grooming and attenuated the stretched attend posture. Immobilization increased Fos-immunoreactivity in the prefrontal cortex, medial and central amygdala, paraventricular and dorsomedial nuclei of the hypothalamus, lateral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stress; Electroacupuncture; Anxiety; Elevated plus-maze; Fos-immunoreactivity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301003

Purification of inulinases by changing the ionic strength of the medium and precipitation with alcohols
Provedor de dados: 42
Autores: GOLUNSKI,SIMONE; SILVA,MARCELI F.; MARQUES,CAMILA T.; ROSSETO,VANUSA; KAIZER,ROSILENE R.; MOSSI,ALTEMIR J.; RIGO,DIANE; DALLAGO,ROGÉRIO M.; DI LUCCIO,MARCO; TREICHEL,HELEN.
ABSTRACT The present study evaluated the purification of inulinase by changing the ionic strength of the medium by addition of NaCl and CaCl2 followed by precipitation with n-propyl alcohol or iso-propyl alcohol. The effects of the concentration of alcohols and the rate of addition of alcohols in the crude extract on the purification yield and purification factor were evaluated. Precipitation caused an activation of enzyme and allowed purification factors up to 2.4-fold for both alcohols. The purification factor was affected positively by the modification of the ionic strength of the medium to 0.5 mol.L-1 NaCl before precipitation with the alcohol (n-propyl or iso-propyl). A purification factor of 4.8-fold and an enzyme yield of 78.1 % could be achieved by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inulinases; Ionic strength; Precipitation; Low cost.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100057

Where is sugarcane cropping expanding in the brazilian cerrado, and why? A case study
Provedor de dados: 42
Autores: ARRUDA,MURILO R. DE; GILLER,KEN E.; SLINGERLAND,MAJA.
ABSTRACT Sugarcane growing area in Brazil sharply expanded between 2000 and 2010 due to the increasing world demand for sugar and ethanol. Since this expansion of sugarcane is said to occur in areas covered by degraded pastures, it is likely not threatening the environment or food production. In order to verify this assumption, we investigate at farm and field levels which types of land use sugarcane cropping replaced between 2005 and 2010 and the reasons for farmers shifting or not shifting to sugarcane, as a case study in two counties in the state of Goiás. Within the studied period, sugarcane cropping expansion was related to large farms, lower risk perceived by farmers, and higher profitability compared with soybean and beef cattle-raising. For...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land use change; Dairy farming; Pastures; Cropping; Small farmers.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502485

Subclinical Diabetes
Provedor de dados: 42
Autores: LIMA,LUÍS M.T.R.
ABSTRACT Type 2 diabetes mellitus (T2DM) is increasing in prevalence worldwide, and those non-diagnosed or misdiagnosed comprise a significant group compared to those diagnosed. Accumulated scientific evidence indicate that the current diagnostic markers (fasting glycemia, 2h glycemia after an oral glucose load and HbA1c) are indeed late diagnostic criteria when considering the incidence of diabetes-related complications and comorbidities, which are also at high risk in some groups among normoglycemic individuals. Additionally, the earlier identification of future risk of diabetes is desirable since it would allow better adherence to preventive actions such as lifestyle intervention, ultimately avoiding complications and minimizing the economic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetes; Diagnosis; Insulin; Subclinical diabetes; Metabolic syndrome.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200591

Diversity of parasites in wild Astronotus ocellatus (Perciformes, Cichlidae), an ornamental and food fish in Brazil
Provedor de dados: 42
Autores: TAVARES-DIAS,MARCOS; NEVES,LIGIA R.
ABSTRACT The community composition of parasites was characterized in Astronotus ocellatus from a tributary of the Amazon River, northern Brazil. The prevalence was 87.9%, and a total of 526,052 parasites were collected, with a mean of 15,941 parasites per host. Nine taxa of ecto- and endo-parasites were identified, but Ichthyophthirius multifiliis was the dominant species, while Piscinoodinium pillulare, Clinostomum marginatum and Argulus multicolor were the least prevalent parasites. The parasite community was characterized by a low species richness, low diversity and low evenness. Host body size was not found to influence the composition of the parasite community, and there was no significant correlation between abundance of any parasite species and host...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregation; Amazon; Ectoparasites; Endoparasites; Freshwater fish.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502305

Peculiar anatomical traits, high durability, and potential ornamental use of Cyclanthaceae as fresh foliage
Provedor de dados: 42
Autores: MEDINA,MARIA CAMILA; HOYOS-GÓMEZ,SAÚL E.; DEMARCO,DIEGO; TUBERQUIA,DINO.
ABSTRACT Wild plant species with potential for use as ornamental green foliage are often reported. Nevertheless, there are few studies evaluating morphological and anatomical aspects associated with this use. Preliminary trials suggest that the species of Sphaeradenia (Sander ex Mast.) Harling, a Cyclantaceae that occurs from Costa Rica to Peru, is suitable to be used as fresh foliage because of attractiveness of their leaves in vase and its durability without showing tissue damage, compared with other genera of this family. Through the study of anatomical characters, it is possible to predict the potential of a species that can serve as ornamental foliage. In this study, three foliar anatomical features (thickness of the cuticle and leaf, and percentage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Cuticle; Fibers; Mesophyll; Sphaeradenia laucheana.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502399

Evaluation in vivo of biocompatibility of differents resin-modified cements for bonding orthodontic bands
Provedor de dados: 42
Autores: MESQUITA,JANAINA A.; LACERDA-SANTOS,ROGÉRIO; SAMPAIO,GÊISA A.M.; GODOY,GUSTAVO P.; NONAKA,CASSIANO F.W.; ALVES,POLLIANNA M.
ABSTRACT The focus of this study was to test the hypothesis that there would be no difference between the biocompatibility of resin-modified glass ionomer cements. Sixty male Wistar rats were selected and divided into four groups: Control Group; Crosslink Group; RMO Group and Transbond Group. The materials were inserted into rat subcutaneous tissue. After time intervals of 7, 15 and 30 days morphological analyses were performed. The histological parameters assessed were: inflammatory infiltrate intensity; reaction of multinucleated giant cells; edema; necrosis; granulation reaction; young fibroblasts and collagenization. The results obtained were statistically analyzed by the Kruskal-Wallis and Dunn test (P&lt;0.05). After 7 days, Groups RMO and Transbond...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dental materials; Orthodontic cements; Biocompatibility test; Inflammation; Multinucleated giant cells.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502433

Mechanisms of Endothelial Protection by Natural Bioactive Compounds from Fruit and Vegetables
Provedor de dados: 42
Autores: MONSALVE,BERNARDITA; CONCHA-MEYER,ANIBAL; PALOMO,IVÁN; FUENTES,EDUARDO.
ABSTRACT The endothelium is fundamental for the regulation of vascular tone and structure. Under disease conditions, including the presence of cardiovascular disease risk factors, the endothelium loses its protective role and becomes a proatherosclerotic structure. In this article we searched for strategies from PUBMED and Science Direct databases using the following key words: endothelium, natural bioactive compounds, polyphenols and cardiovascular diseases. The search was restricted to english language papers. Studies have identified the contribution of diet to the risk of developing cardiovascular diseases. In this context, high intakes of fruit and vegetables are associated with the decrease of cardiovascular diseases. Thus the most important...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endothelium; Natural bioactive compounds; Polyphenols; Cardiovascular diseases.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200615

Clusia criuva Cambess. (Clusiaceae): anatomical characterization, chemical prospecting and antioxidant activity
Provedor de dados: 42
Autores: SILVA,KARLA M.M. DA; NÓBREGA,ANDREA B. DA; LESSA,BRUNO; ANHOLETI,MARIA CAROLINA; LOBÃO,ADRIANA Q.; VALVERDE,ALESSANDRA L.; PAIVA,SELMA R. DE; JOFFILY,ANA.
ABSTRACT This study aims the anatomical description and chemical characterization of aerial parts of Clusia criuva Cambess., Clusiaceae in addition to the evaluation of the antioxidant activity of crude extracts, correlated to the flavonoid content. The morphological characterization was performed using traditional techniques of plant anatomy. For phytochemical studies, crude extracts were obtained by static maceration and analyzed by thin layer chromatography. The antioxidant activity and the flavonoids content were determined by colorimetric methods involving, respectively, 2,2-diphenyl-1-picrylhydrazyl free radical and aluminum chloride. C. criuva has uniseriate epidermis, paracytic stomata, hypostomatic leaves, cuticular flanges and cordiform vascular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphoanatomy; Antioxidant activity; Chemical prospecting; Clusia criuva; Clusiaceae; Flavonoids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401565

Bone turnover markers in sheep and goat: A review of the scientific literature
Provedor de dados: 42
Autores: CAMASSA,JOSÉ A.; DIOGO,CAMILA C.; SOUSA,CRISTINA P.; AZEVEDO,JORGE T.; VIEGAS,CARLOS A.; REIS,RUI L.; DOURADO,NUNO; DIAS,ISABEL R.
ABSTRACT Bone turnover markers (BTMs) are product of bone cell activity and are generally divided in bone formation and bone resorption markers. The purpose of this review was to structure the available information on the use of BTMs in studies on small ruminants, especially for monitoring their variations related to diet, exercise, gestation and metabolic lactation state, circadian and seasonal variations, and also during skeletal growth. Pre-clinical and translational studies using BTMs with sheep and goats as animal models in orthopaedic research studies to help in the evaluation of the fracture healing process and osteoporosis research are also described in this review. The available information from the reviewed studies was systematically organized in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone formation markers; Bone resorption markers; Bone metabolism; Small ruminants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100231

Is Forced Swimming Immobility a Good Endpoint for Modeling Negative Symptoms of Schizophrenia? - Study of Sub-Anesthetic Ketamine Repeated Administration Effects
Provedor de dados: 42
Autores: NEVES,GILDA; BORSOI,MILENE; ANTONIO,CAMILA B.; PRANKE,MARIANA A.; BETTI,ANDRESA H.; RATES,STELA M.K.
ABSTRACT Immobility time in the forced swimming has been described as analogous to emotional blunting or apathy and has been used for characterizing schizophrenia animal models. Several clinical studies support the use of NMDA receptor antagonists to model schizophrenia in rodents. Some works describe the effects of ketamine on immobility behavior but there is variability in the experimental design used leading to controversial results. In this study, we evaluated the effects of repeated administration of ketamine sub-anesthetic doses in forced swimming, locomotion in response to novelty and novel object recognition, aiming a broader evaluation of the usefulness of this experimental approach for modeling schizophrenia in mice. Ketamine (30 mg/kg/day i.p....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antidepressant-like effect; Immobility behavior; Locomotor activity; Memory negative symptoms.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401655

6-Gingerol inhibits hair cycle via induction of MMP2 and MMP9 expression
Provedor de dados: 42
Autores: HOU,CHUN; MIAO,YONG; JI,HANG; WANG,SUSHENG; LIANG,GANG; ZHANG,ZHIHUA; HONG,WEIJIN.
ABSTRACT 6-Gingerol is the major active constituent of ginger. In the current study, we aimed to investigate the mechanisms underlying the effects of 6-Gingerol on hair growth. Mice were randomly divided into five groups; after hair depilation (day 0), mice were treated with saline, or different concentrations of 6-Gingerol for 11 days. The histomorphological characteristics of the growing hair follicles were examined after hematoxylin and eosin staining. The results indicated that 6-Gingerol significantly suppressed hair growth compared with that in the control group. And choose the concentration of 6-Gingerol at 1 mg/mL to treated with mice. Moreover, 6-Gingerol (1 mg/mL) significantly reduced hair re-growth ratio, hair follicle number, and hair follicle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MMP2; MMP9; 6-Gingerol; Hair growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602707

Development of a real-time PCR assay for the detection of the golden mussel ( Limnoperna fortunei , Mytilidae) in environmental samples
Provedor de dados: 42
Autores: PIE,MARCIO R.; STRÖHER,PATRÍCIA R.; AGOSTINIS,ANDRÉ O.; BELMONTE-LOPES,RICARDO; TADRA-SFEIR,MICHELLE Z.; OSTRENSKY,ANTONIO.
ABSTRACT The golden mussel, Limnoperna fortunei, is among the most devastating invasive species in freshwater habitats worldwide, leading to severe environmental disturbances and economic losses. Therefore, management efforts would be greatly improved by methods that efficiently detect and quantify the abundance of the golden mussel in freshwater habitats, particularly in early stages of colonization. In this study, we describe a highly-sensitive real-time PCR assay targeting a 100-bp region of the COI mitochondrial gene of the golden mussel. The method was able to detect as little as 0.225 pg of target DNA. This assay represents an important contribution to surveillance methods, as well as to optimize field measures to contain and manage populations of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EDNA; Invasive species; Environmental DNA; Molecular identification.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301041

Grape juice increases the BDNF levels but not alter the S100B levels in hippocampus and frontal cortex from male Wistar Rats
Provedor de dados: 42
Autores: DANI,CAROLINE; ANDREAZZA,ANA CRISTINA; GONÇALVES,CARLOS ALBERTO; KAPIZINSKI,FLÁVIO; HENRIQUES,JOÃO A. P.; SALVADOR,MIRIAN.
ABSTRACT Several studies have shown that a high consumption of vegetables and fruits is consistently associated with a low risk of oxidative stress-induced diseases, which includes some degenerative diseases such as amyotrophic lateral sclerosis, Alzheimer and Parkinson. Therefore, the objective of this study is to verify the effects of conventional and organic grape juice in the modulation of the neurotrophic factor (BDNF) and astrocytic markers protein (S100B) in hippocampus and frontal cortex of Wistar rats. In this study, 24 male Wistar rats were divided into three groups. To the first one, it was given organic purple grape juice; to the second, conventional grape juice, while the last one received only saline. After 30 days, all rats were sacrificed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brain; Grape juice; Neuroprotection; Polyphenol.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100155

Morphological affinities of Homo naledi with other Plio-Pleistocene hominins: a phenetic approach
Provedor de dados: 42
Autores: NEVES,WALTER A.; BERNARDO,DANILO V.; PANTALEONI,IVAN.
ABSTRACT Recent fossil material found in Dinaledi Chamber, South Africa, was initially described as a new species of genus Homo, namely Homo naledi. The original study of this new material has pointed to a close proximity with Homo erectus. More recent investigations have, to some extent, confirmed this assignment. Here we present a phenetic analysis based on dentocranial metric variables through Principal Components Analysis and Cluster Analysis based on these fossils and other Plio-Pleistocene hominins. Our results concur that the Dinaledi fossil hominins pertain to genus Homo. However, in our case, their nearest neighbors are Homo habilis and Australopithecus sediba. We suggest that Homo naledi is in fact a South African version of Homo habilis, and not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cranio-dental traits; Human evolution; Human origins; Multivariate analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502199

Hepatic toxicity caused by PLGA-microspheres containing usnic acid from the lichen C ladonia substellata (AHTI) during pregnancy in Wistar rats
Provedor de dados: 42
Autores: MARINHO,KETSIA S.N.; ANTONIO,ERIVALDO A.; SILVA,CAMILLA V.N.S.; SILVA,KEILA T. DA; TEIXEIRA,VALÉRIA W.; AGUIAR JUNIOR,FRANCISCO C.A. DE; SANTOS,KATHARINE R.P. DOS; SILVA,NICÁCIO H. DA; SANTOS,NOEMIA P.S.
ABSTRACT This study aimed to evaluate the teratogenic and hepatotoxic potential of the usnic acid encapsulated into PLGA-microspheres. In total, 12 female Wistar rats in pregnancy were randomly distributed in the control group (n= 6) that received 1.0 mL of physiological solution and treatment group (n= 6) that received 25 mg/kg of encapsulated usnic acid by oral administration. All females were euthanized at day 20 of pregnancy and their fetuses were removed and analyzed. During the pregnancy was observed a reduction in weight gain. There was no difference in serum transaminases levels analyzed as well as any difference in liver weight in both groups. The histomorphometric analysis of the liver from the treatment group revealed an increase in number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Encapsulation; Fetotoxicity; Hepatotoxicity; Secondary metabolite.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301073

Effect of carbon source on production, characterization and bioactivity of exopolysaccharide produced by Phellinus vaninii Ljup
Provedor de dados: 42
Autores: XU,CHUNPING; YU,JINWEI; ZHAO,SHANSHAN; WU,SHUNGSHUNG; HE,PEIXIN; JIA,XUEWEI; LIU,YANQI; MAO,DUOBIN.
ABSTRACT The effect on different three carbon source (i.e. glucose, fructose and sucrose) on production, chemical characterization and antioxidant activity of exopolysaccharide (EPS) produced by Phellinus vaninii Ljup was investigated in this study. Amongst carbon sources examined, glucose and sucrose were favorable for the mycelia growth, while the maximum EPS yield was achieved when sucrose was employed. The predominant carbohydrate compositions in EPSs identified were gluconic acid, glucose, mannose and galactose acid. Then, FT-IR spectral analysis revealed prominent characteristic groups in EPSs. EPSs molecule exist as nearly globular shape form in aqueous solution. The variation also affects antioxidant activities by investigated by using hydroxyl and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phellinus vaninii Ljup; Exopolysaccharide; Carbon source; Antioxidant activity; Composition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502033

Antidiarrheal activity of extracts from Maytenus gonoclada and inhibition of Dengue virus by lupeol
Provedor de dados: 42
Autores: SILVA,FERNANDO C.; RODRIGUES,VANESSA G.; DUARTE,LUCIENIR P.; LULA,IVANA S.; SINISTERRA,RUBEN D.; VIEIRA-FILHO,SIDNEY A.; RODRIGUES,RODRIGO A.L.; KROON,ERNA G.; OLIVEIRA,PATRÍCIA L.; FARIAS,LUIZ M.; MAGALHÃES,PAULA P.; SILVA,GRÁCIA D.F.
ABSTRACT Diarrhea is an infectious disease caused by bacterial, virus, or protozoan, and dengue is caused by virus, included among the neglected diseases in several underdeveloped and developing countries, with an urgent demand for new drugs. Considering the antidiarrheal potential of species of Maytenus genus, a phytochemical investigation followed by antibacterial activity test with extracts of branches and heartwood and bark of roots from Maytenus gonoclada were conducted. Moreover, due the frequency of isolation of lupeol from Maytenus genus the antiviral activity against Dengue virus and cytotoxicity of lupeol and its complex with β-cyclodextrins were also tested. The results indicated the bioactivity of ethyl acetate extract from branches and ethanol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antidiarrheal; Celastraceae; Pentacyclic Triterpene; Antiviral Activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401555

Characterization and bioactivities of a novel polysaccharide obtained from Gracilariopsis lemaneiformis
Provedor de dados: 42
Autores: SHI,CHEN-SHAN; SANG,YA-XIN; SUN,GUI-QING; LI,TIAN-YE; GONG,ZHENG-SI; WANG,XIANG-HONG.
ABSTRACT Gracilariopsis lemaneiformis is a type of red alga that contains seaweed polysaccharide agar. In this study, a novel non-agar seaweed polysaccharide fraction named GCP (short of crude polysaccharide obtained from Gracilariopsis lemaneiformis) was isolated from Gracilariopsis lemaneiformis. Structural analysis showed that GCP shows triple helical chain conformation when dissolved in water and has many branches and long side chains. Also, 1→3 linkage is the major linkage and the sugar structures are galactopyranose configurations linked by β-type glycosidic linkages. Two macromolecular substance fractions (GCP-1 and GCP-2) were purified by DEAE Sepharose Fast Flow column chromatography. Moreover, a splenocyte damage assay and splenocyte...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioactivities; Gracilariopsis lemaneiformis; Polysaccharide; Structural characterization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100175

Growth, photosynthetic pigments and production of essential oil of long-pepper under different light conditions
Provedor de dados: 42
Autores: LIMA,VANDIMILLI A.; PACHECO,FERNANDA V.; AVELAR,RAFAELLA P.; ALVARENGA,IVAN C.A.; PINTO,JOSÉ EDUARDO B.P.; ALVARENGA,AMAURI A. DE.
ABSTRACT Piper hispidinervum C. DC. is popularly known as long-pepper and it owns a commercial value due to the essential oil it produces. Long-pepper oil is rich in safrole and eugenoln components that have insecticidal, fungicidal and bactericidal activity. It has been establish that to medicinal plants light influences not only growth but also essential oil production. The growth, the content of photosynthetic pigments and the essential oil production of Piper hispidinervum at greenhouses with different light conditions was evaluated. The treatments were characterized by cultivation of plants for 180 days under different light conditions, produced by shading greenhouses with 50% and 30% of natural incident irradiance, two colored shading nets red (RN)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colored nets; Light quality; Medicinal plants; Safrole.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301167

First record of Scybalocanthon nigriceps (Harold, 1868) (Coleoptera: Scarabaeidae: Scarabaeinae) in Rio Grande do Sul state, southern Brazil
Provedor de dados: 42
Autores: FERREIRA,SHEILA C.; MARE,ROCCO A. DI; SILVA,PEDRO G. DA.
ABSTRACT The dung beetle, Scybalocanthon nigriceps (Harold, 1868), is recorded in Rio Grande do Sul state, Brazil, for the first time, at the Moreno Fortes Biological Reserve, municipality of Dois Irmãos das Missões, northwest region of the state, expanding the area of occurrence and distribution of this species in the country.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Dung beetle; New record; Distribution expansion; Southern Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401635

Gill parasites of fish from two estuaries in northeastern Brazil: new hosts and geographical records
Provedor de dados: 42
Autores: GOLZIO,JÉSSICA E.S.A.; FALKENBERG,JÚLIA M.; PRAXEDES,RAYSSA C.G.; COUTINHO,ANDERSON S.; LAURINDO,MYLENA K.; PESSANHA,ANDRÉ; MADI,RUBENS R.; PATRÍCIO,JOANA; VENDEL,ANA L.; SOUZA,GEZA T.R.; MELO,CLÁUDIA M.; LACERDA,ANA CAROLINA F.
ABSTRACT Parasites are important components of communities and constitute great part of the biological diversity found in ecosystems, providing valuable information about their hosts and the environment in which they live. However, despite its importance, parasitic diversity is still not well known in some regions of Brazil, especially with respect to fish parasites in the Northeast Region. The present study aims to perform the survey of gill parasites of fish from two tropical estuaries located in northeastern Brazil: Paraíba and Mamanguape rivers. Two collections were made in each estuary, one during the dry period (November / 2013) and the other during the rainy season (July / 2014). The fish were caught using a beach seine net, dragged along the main...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish parasites; Parasite diversity; Ectoparasites; Tropical estuaries.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502281

Antimicrobial and enzymatic activity of anemophilous fungi of a public university in Brazil
Provedor de dados: 42
Autores: SOBRAL,LAUREANA V.; MELO,KELLY N.; SOUZA,CLECIANA M.; SILVA,SÍLVIO F.; SILVA,GILVANIA L.R.; SILVA,ANDRESSA L.F.; WANDERLEY,KATHARINE A.A.; OLIVEIRA,IDJANE S.; CRUZ,ROBERTA.
ABSTRACT To the fungal microbiota the UFPE and biotechnological potential enzymatic and antimicrobial production. Air conditioned environments were sampled using a passive sedimentation technique, the air I ratio and the presence of aflatoxigenic strains evaluated for ANVISA. Icelles were to determine the enzymatic activity of lipase, amylase and protease metabolic liquids to determine antimicrobial activity. Diversity was observed in all CAV environments, CFU/m3 ranged from 14 to 290 and I/E ratio from 0.1 to 1.5. The of the fungal genera were: Aspergillus (50%), Penicillium (21%), Talaromyces (14%), Curvularia and Paecilomyces (7% each). Aspergillus sydowii (Bainier &amp; Sartory) Thom &amp; Church presented enzymatic activity and the Talaromyces...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air quality; Bacteria; Enzymes; Filamentous fungi; Refrigerated environments.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502327

Shallow aquifer response to climate change scenarios in a small catchment in the Guarani Aquifer outcrop zone
Provedor de dados: 42
Autores: MELO,DAVI C.D.; WENDLAND,EDSON.
ABSTRACT Water availability restrictions are already a reality in several countries. This issue is likely to worsen due to climate change, predicted for the upcoming decades. This study aims to estimate the impacts of climate change on groundwater system in the Guarani Aquifer outcrop zone. Global Climate Models (GCM) outputs were used as inputs to a water balance model, which produced recharge estimates for the groundwater model. Recharge was estimated across different land use types considering a control period from 2004 to 2014, and a future period from 2081 to 2099. Major changes in monthly rainfall means are expected to take place in dry seasons. Most of the analysed scenarios predict increase of more than 2 ºC in monthly mean temperatures. Comparing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Guarani Aquifer; Groundwater modelling; Groundwater recharge.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200391

Scale insects (Hemiptera: Coccoidea) associated with arabica coffee and geographical distribution in the neotropical region
Provedor de dados: 42
Autores: FORNAZIER,MAURÍCIO J.; MARTINS,DAVID S.; WILLINK,MARIA CRISTINA G. DE; PIROVANI,VICTOR D.; FERREIRA,PAULO S.F.; ZANUNCIO,JOSÉ C.
ABSTRACT Coffee is one of the most important Brazilian agricultural commodities exported, and Minas Gerais and Espírito Santo States are the main coffee producers. Scale insects are important coffee pests, and 73 species of Cerococcidae (3), Coccidae (18), Diaspididae (6), Eriococcidae (1), Ortheziidae (3), Pseudococcidae (21), Putoidae (2) and Rhizoecidae (19) have been associated with roots, branches, leaves, flowers and fruits of Arabica coffee in the Neotropics. Eight species were found associated with Arabica coffee in Minas Gerais and Espírito Santo States in this study, and Coccidae was the most frequent family. Coccus alpinus, Cc. celatus, Cc. lizeri, Cc. viridis, and Saissetia coffeae (Coccidae) were found in both states; Alecanochiton marquesi,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coccidae; Coffea arabica; Diaspididae; Geographical distribution; Pseudococcidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603083

Biting midges (Diptera: Ceratopogonidae) from an urban forest fragment in Central Amazon (Brazil): Effects of opening areas on abundance, richness, and composition
Provedor de dados: 42
Autores: DOURADO,EDUARDA D.R.; FERREIRA-KEPPLER,RUTH L.; MARTINS,RENATO T.; RONDEROS,MARIA M.
ABSTRACT We assessed the immature stages of Ceratopogonidae (Diptera) in artificial containers in an urban forest fragment in Manaus (Brazil), including their behavioral, biological and ecological information. In addition, we evaluated the effects of deforestation in an open and forested area on Ceratopogonidae communities. Immatures were sampled between August 2012 and July 2014 in artificial containers installed in both habitat types. We collected 685 immatures of seven morpho-species of Bezzia Kieffer, Culicoides Latreille, Dasyhelea Kieffer, Forcipomyia Meigen, and Palpomyia Meigen. In the open area, we recorded higher temperature and electrical conductivity values than in the forested area; however, these variables did not differ between seasons....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Aquatic insects; Artificial containers; Deforestation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602757

Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism
Provedor de dados: 42
Autores: RODRIGUES,BRUNO V.B.; AGUIAR-NETO,MANOEL B.; OLIVEIRA,UBIRAJARA DE; SANTOS,ADALBERTO J.; BRESCOVIT,ANTONIO D.; MARTÍNS,MARLÚCIA B.; BONALDO,ALEXANDRE B.
ABSTRACT A list of spider species is presented for the Belém Area of Endemism, the most threatened region in the Amazon Basin, comprising portions of eastern State of Pará and western State of Maranhão, Brazil. The data are based both on records from the taxonomic and biodiversity survey literature and on scientific collection databases. A total of 319 identified species were recorded, with 318 occurring in Pará and only 22 in Maranhão. About 80% of species are recorded at the vicinities of the city of Belém, indicating that sampling effort have been strongly biased. To identify potentially high-diversity areas, discounting the effect of variations in sampling effort, the residues of a linear regression between the number of records and number of species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Araneae; Diversity; Fragmentation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401543

Histopatology of the reproductive tract of Nellore pubertal heifers with genital ureaplasmosis
Provedor de dados: 42
Autores: PÔRTO,REGIANI; OLIVEIRA FILHO,BENEDITO; FERRAZ,HENRIQUE; CAIXETA,LUCIANO; VIU,MARCO ANTONIO; GAMBARINI,MARIA LÚCIA.
ABSTRACT In order to study and characterize the lesions in the reproductive tract of Nellore heifers naturally infected with Ureaplasma diversum and presenting granular vulvovaginitis syndrome (GVS), fragments of uterine tube, uterus, cervix, vagina and vulva of 20 animals were evaluated. The macroscopic lesions of the vulvovaginal mucosa were classified in scores of “1” mild, until “4”, severe inflammation and pustular or necrotic lesions. The histopathological evaluation was performed using scores of “1” to “4”, according to the inflammatory alterations. The fragments with severe microscopic lesions (3 and 4) were from the uterine tubes and uterus, which showed leukocytes infiltration and destruction and/or necrosis of epithelium. Alterations in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine; Tissue evaluation; Reproduction; Ureaplasma diversum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602987

Geo-environmental zoning using physiographic compartmentalization: a proposal for supporting sustainable decision-making
Provedor de dados: 42
Autores: CORRÊA,CLAUDIA V.S.; REIS,FÁBIO A.G.V.; GIORDANO,LUCILIA C.; BRESSANE,ADRIANO; CHAVES,CAMILA J.; AMARAL,ANA MARIA C. DO; BRITO,HERMES D.; MEDEIROS,GERSON A. DE.
ABSTRACT The geo-environmental zoning represents an important strategy in the territorial management. However, it requires a logical and structured procedure. Therefore, an approach using physiographic compartmentalization is proposed and applied as case study in a region covered by the topographic maps of São José dos Campos and Jacareí, Brazil. This region has great geological and geomorphological peculiarities, beyond being a place with large human interventions because of its quickly economic growth. The methodology is based on photointerpretation techniques and remote sensing in GIS environment. As a result, seven geo-environmental zones were obtained from a weighted integration by multicriteria analysis of physiographic units with land-use classes....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Remote sensing; Decision-support; Earth sciences; Land use.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401503

Can nearby eutrophic reservoirs sustain a differentiated biodiversity of planktonic microcrustaceans in a tropical semiarid basin?
Provedor de dados: 42
Autores: DINIZ,LEIDIANE P.; MELO-JÚNIOR,MAURO DE.
ABSTRACT This paper aims to compare alpha and beta diversities of planktonic microcrustaceans from three reservoirs located nearby in a tropical semiarid basin. Our hypothesis was that alpha and beta diversities of the community are different, although the ecosystems are located close to each other. We carried out two sampling campaigns: dry and rainy seasons. The sampling of microcrustaceans and environmental variables (dissolved oxygen, chlorophyll a and nutrient) was performed at twelve stations and were distributed throughout the three zones (river, transition, and lacustrine), using a plankton net (45 µm). The reservoirs showed different uses and types of nitrogen predominance: Cachoeira (supply/nitrate), Borborema (sewage/ammonia) and Saco...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alpha and beta diversities; Artificial lakes; Cladocera; Copepoda; Brazil; Zooplankton.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602771

Parasitic communities of Hoplosternum littorale (Hancock, 1828) as indicators of environmental impact
Provedor de dados: 42
Autores: DIAS,KARINA G.A; ALVES,CARLOS A.; SILVA,REINALDO J. DA; ABDALLAH,VANESSA D.; AZEVEDO,RODNEY K. DE.
ABSTRACT The parasites are indicative of several biological aspects of their hosts, including their diet, migration, recruitment and phylogeny, but they can also be direct indicators of the environmental quality. Hoplosternum littorale is a fish that has a high commercial value in some South American countries. The fishes were collected from January to July 2012, in two locations of the Peixe River in the municipality of Anhembi, State of São Paulo, Brazil, which had different environmental and limnological characteristics (river mouth and Lagoa Cabeça de Boi). An amount of 30 fish specimens were captured in each location for the analysis of their parasitic fauna. Nine species of metazoan parasites were collected. Both Brillouin`s diversity index and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioindicators; Callichthyidae; Parasites; Peixe River; São Paulo.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502317

In vitro antifungal activity of Myracrodruon urundeuva Allemão against human vaginal Candida species
Provedor de dados: 42
Autores: OLIVEIRA,FERNANDO A. DE; RORATO,VANESSA C.; ALMEIDA-APOLONIO,ADRIANA A.; RODRIGUES,ALLAN B.; BARROS,ALINE L. DE; SANGALLI,ANDRÉIA; ARENA,ARIELLE C.; MOTA,JONAS S.; GRISOLIA,ALEXÉIA B.; OLIVEIRA,KELLY M.P. DE.
ABSTRACT Myracrodruon urundeuva is a plant native to Brazil, which is used by the indigenous population for the treatment of candidiasis. The aims of this study were to evaluate the antifungal activity of extract against human vaginal Candida species and evaluate the possible toxicological activities of M. urundeuva. Initially, ethanol extracts, ethyl acetate fractions, and hydroalcoholic fractions of the bark and leaf of M. urundeuva were used to determine the minimum inhibitory concentration. The extracts that showed antifungal activity were characterized by liquid chromatography and subjected to toxicity assessment. Toxic, cytotoxic, genotoxic, and mutagenic testing were performed using Allium cepa and Ames assays with the ethanol extracts of the bark...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anacardiaceae; Candidiasis; Myracrodruon urundeuva; Traditional medicine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502423

A new approach to feed frequency studies and protein intake regulation in juvenile pirarucu
Provedor de dados: 42
Autores: MATTOS,BRUNO O. DE; NASCIMENTO FILHO,EDUARDO C.T.; SANTOS,ALINE A.; BARRETO,KAYCK A.; SÁNCHEZ-VÁZQUEZ,FRANCISCO J.; FORTES-SILVA,RODRIGO.
ABSTRACT This study aimed to investigate pirarucu's (Arapaima gigas) ability to trigger a self-feeding system to regulate protein intake between two standard diets that contained 39% and 49% of crude protein. The same system allowed the evaluation of daily feeding and locomotor activity rhythms. Eighteen fish (654.44±26.85g) were distributed into six 250 L tanks (3 fish/tank). Fish had free access to both diets (39% vs. 49% protein) by feeders (2 per tank), adapted to be activated by fish themselves. This system was connected to a computer system. After an adaptation period, fish learned to activate feeders and the mean food intake recorded was 2.14% of their body weight on a daily basis. Fish showed feeding (72.48%) and locomotor (72.49%) activity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arapaima gigas; Feeding behavior; Protein intake; Self-feeding.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301243

Insect Galls of the Parque Nacional do Itatiaia (Southeast Region, Brazil)
Provedor de dados: 42
Autores: MAIA,VALÉRIA C.; MASCARENHAS,BERNARDO.
ABSTRACT The Parque Nacional do Itatiaia (PNI) (Brazilian Southeast Region) was surveyed monthly for insect galls from February/2014 to December/ 2015. A total of 432 gall morphotypes were found. This number places the PNI as the richest Atlantic forest area in number of gall morphotypes. The galls were found on 47 plant families. Among them, Asteraceae were pointed out as the superhost. The gall richness in the lower part of the PNI is higher than that of the plateau. The insect galls were found in 154 native, 56 endemic and only one exotic plant species. Concerning the conservational status, the host plants include two vulnerable species with three morphotypes together. Several new botanical records were reported. Leaves were the most galled plant organ,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Cecidomyiidae; Insect-plant interactions; Multitrophic relations; New records.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200505

Chemical Composition and Antibacterial Activity of the Essential Oil of Vitex agnus-castus L. (Lamiaceae)
Provedor de dados: 42
Autores: GONÇALVES,REGIANE; AYRES,VANESSA F.S.; CARVALHO,CARLOS E.; SOUZA,MARIA G.M.; GUIMARÃES,ANDERSON C.; CORRÊA,GEONE M.; MARTINS,CARLOS H.G.; TAKEARA,RENATA; SILVA,ELIANE O.; CROTTI,ANTÔNIO E.M.
ABSTRACT Abnormal multiplication of oral bacteria causes dental caries and dental plaque. These diseases continue to be major public health concerns worldwide, mainly in developing countries. In this study, the chemical composition and antimicrobial activity of the essential oil of Vitex agnus-castus leaves (VAC‒EO) collected in the North of Brazil against a representative panel of cariogenic bacteria were investigated. The antimicrobial activity of VAC-EO was evaluated in terms of its minimum inhibitory concentration (MIC) values by using the broth microdilution method in 96-well microplates. The chemical constituents of VAC-EO were identified by gas chromatography (GC‒FID) and gas chromatography‒mass spectrometry (GC‒MS). VAC‒EO displayed some activity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptococcus mutans; 1-8-cineole; Cariogenic bacteria; Oral pathogens.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602825

Publish and perish in the hands of predatory journals
Provedor de dados: 42
Autores: CORDEIRO,YRAIMA; LIMA,LUIS MAURÍCIO T.R.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300787

Transmissivity of Aquifer by Capture Zone Method: An Application in the Sete Lagoas Karst Aquifer, MG, Brazil
Provedor de dados: 42
Autores: GALVÃO,PAULO; HALIHAN,TODD; HIRATA,RICARDO.
ABSTRACT Transmissivity is an important hydraulic parameter to determine the amount of water passed horizontally across a given saturated thickness of an aquifer. The techniques to quantify this parameter, such as grain size analyses or pumping tests, can have limitations of time/spatial scale, viability, or economically. One technique that can be used, but little adopted, is the capture zone analysis. In this paper, capture zone analytical equations were used to estimate transmissivity values in order to verify the effectiveness of this methodology as alternative in situations where other traditional methods present implementation difficulties. The results were compared with field data estimated by aquifer tests conducted in the same region. A sensitivity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transmissivity; Capture zone; Aquifer test; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100091

Long-wavelength sensitive opsin (LWS) gene variability in Neotropical cichlids (Teleostei: Cichlidae)
Provedor de dados: 42
Autores: FABRIN,THOMAZ M.C.; PRIOLI,SONIA MARIA A.P.; PRIOLI,ALBERTO JOSÉ.
ABSTRACT Cichlid fishes are an important group in evolutionary biology due to their fast speciation. This group depends widely of vision for feeding and reproduction. During the evolutionary process it plays a significant role in interspecific and intraspecific recognition and in its ecology. The molecular basis of vision is formed by the interaction of the protein opsin and retinal chromophore. Long-wavelength sensitive opsin (LWS) gene is the most variable among the opsin genes and it has an ecological significance. Current assay identifies interspecific variation of Neotropical cichlids that would modify the spectral properties of the LWS opsin protein and codons selected. Neotropical species present more variable sites for LWS gene than those of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Convergence; Ecology; Evolution; Visual system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100213

Evaluation of the impact of pharmaceutical care for tuberculosis patients in a Secondary Referral Outpatient Clinic, Minas Gerais, Brazil
Provedor de dados: 42
Autores: LOPES,ANDREZA R.V.; MIRANDA,SILVANA S. DE; CECCATO,MARIA DAS GRAÇAS B.; SILVEIRA,MICHELINE R.; RESENDE,NATÁLIA H. DE; CARVALHO,WÂNIA S.
ABSTRACT Pharmaceutical care is a professional practice seeking the responsible provision of drug therapy by identifying, resolving, and preventing Drug-Related Problems (DRP). The study aims to describe and evaluate the impact of pharmaceutical care given to patients being treated for tuberculosis (TB). Study concurrent, longitudinal, prospective conducted during pharmaceutical care in the TB outpatient clinic, Clinical Hospital, Federal University of Minas Gerais during the period August 2009 to July 2012. The Pharmacotherapy Workup proposed by Cipolle et al. (2004) was used. Statistical analyses were performed by X2 or Fisher exact test, as appropriate. A total of 62 patients were followed up, and 128 drug-related problems (DRP) were identified: 69.5%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmaceutical care; Drug-related problems; Tuberculosis; Pharmacotherapeutic follow-up.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602911

Carbonate Buildups in the Pernambuco Basin, NE Brazil
Provedor de dados: 42
Autores: BUARQUE,BRUNO V.; BARBOSA,JOSÉ A.; OLIVEIRA,JEFFERSON T.C.; MAGALHÃES,JOSÉ R.G.; CORREIA FILHO,OSVALDO J.
ABSTRACT The Pernambuco Basin represents one of the most prominent regions for deep water oil and gas exploration off the Brazilian coast. This study aims to identify and describe the occurrence of carbonate buildups in the offshore regions of the basin. The study was based on an analysis of a set of 143 2D time-migrated seismic sections that cover the offshore region of the Pernambuco Basin. An interpretation of the seismic dataset was used to define the main seismic sequences related to the main regional pulses of deposition and to identify three main groups of carbonate buildups: 1) shelf margin reefs, 2) patch reefs, and 3) isolated carbonate buildups. The carbonate buildups formed in two main intervals during post-rift sequences of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbonate buildup; Pernambuco Basin; Brazilian margin; Seismic stratigraphy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300841

A new model for describing remission times: the generalized beta-generated Lindley distribution
Provedor de dados: 42
Autores: LIMA,MARIA DO CARMO S.; CORDEIRO,GAUSS M.; NASCIMENTO,ABRAÃO D.C.; SILVA,KÁSSIO F.
New generators are required to define wider distributions for modeling real data in survival analysis. To that end we introduce the four-parameter generalized beta-generated Lindley distribution. It has explicit expressions for the ordinary and incomplete moments, mean deviations, generating and quantile functions. We propose a maximum likelihood procedure to estimate the model parameters, which is assessed through a Monte Carlo simulation study. We also derive an additional estimation scheme by means of least square between percentiles. The usefulness of the proposed distribution to describe remission times of cancer patients is illustrated by means of an application to real data.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: GBG generator; Remission times; Extended Lindley model; Quantile function; Lambert function.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401343

A polysaccharide fraction extracted from Pleurotus ostreatus mycelial biomass inhibit Sarcoma 180 tumor
Provedor de dados: 42
Autores: WISBECK,ELISABETH; FACCHINI,JEAN M.; ALVES,ENDI P.; SILVEIRA,MARCIA L.L.; GERN,REGINA M.M.; NINOW,JORGE L.; FURLAN,SANDRA A.
ABSTRACT Fungi of Pleurotus genus have attracted a great interest due to their medicinal properties such as anti-inflammatory, antimicrobial and antitumor. These properties are attributed mainly to polysaccharides synthesized by Pleurotus. This work aimed to study the mycelial growth of P. ostreatus in submerged culture, evaluating the influence of the initial concentration of substrate (20 and 40 g/L of glucose) and the pH (4 and 6) on kinetic parameters of production of biomass. The effectiveness of different doses (10, 30 and 50 mg/kg) of a mycelium polysaccharide fraction extracted from P. ostreatus in reducing Sarcoma 180 development in mice was also verified. In the range of this study, maximum concentration of mycelial biomass (about 12.8 g/L) was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antitumor Activity; Mycelium; Pleurotus ostreatus; Polysaccharides; Sarcoma 180.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502013

Description of fourth instar larva and pupa of Atrichopogon delpontei Cavalieri and Chiossone (Diptera: Ceratopogonidae) from Brazilian Amazonia
Provedor de dados: 42
Autores: MARINO,PABLO I.; SPINELLI,GUSTAVO R.; FERREIRA-KEPPLER,RUTH; RONDEROS,MARÍA M.
ABSTRACT The fourth instar larva and pupa of Atrichopogon delpontei Cavalieri and Chiossone are described for the first time. The immatures were collected from stream margins in the northern Brazilian states Rondônia and Piauí, and subsequently reared to adults. Larvae and pupae are illustrated and photomicrographed. Details on the rearing process and feeding behavior in laboratory, bionomics and notes on habitats are also provided.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atrichopogon delpontei; Immatures; Lophomyidium; Neotropical region; Reared.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502081

CYP2B6 516 G&amp;gt;T polymorphism and side effects of the central nervous system in HIV-positive individuals under Efavirenz treatment: Study of a sample from southern Brazil
Provedor de dados: 42
Autores: MÜLLER,TALISE E.; ELLWANGER,JOEL H.; MICHITA,RAFAEL T.; MATTE,MARIA CRISTINA C.; RENNER,JANE D.P.
ABSTRACT This study aimed to identify the 516 G&gt;T polymorphism of the CYP2B6 gene and evaluate its influence on central nervous system (CNS) side effect development in HIV-positive individuals undergoing Efavirenz (EFV) treatment in a population from southern Brazil. Additionally, we performed a survey on the clinical and epidemiological characteristics of our sample. In addition to medical records evaluation, whole blood of 89 individuals was analyzed for viral load, T lymphocyte count (CD4+ and CD8+), and the polymorphism. Considering the side effects of the CNS reported by individuals but without considering the genetic variables, no statistically significant association was noted between the adverse effects and the antiretroviral treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Efavirenz; Antiretroviral therapy; CYP2B6.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200497

Accuracy of linear measurements performed with two imaging software in cone-beam computed tomography scans of dry human mandibles
Provedor de dados: 42
Autores: SILVA,ALESSANDRO A.L.S.; FRANCO,ADEMIR; FERNANDES,ÂNGELA; COSTA,CLAUDIO; BARBOSA,JORGE S.; WESTPHALEN,FERNANDO H.
ABSTRACT The present study aimed to assess the accuracy of linear measurements performed with two software packages in multislice (MSCT) and cone beam (CBCT) computed tomography (CT) images. The sample consisted of 10 human mandibles marked standardly 8 times with metallic orthodontic wires. The mandibles underwent both MSCT and CBCT scanning and were measured linearly and digitally with two software packages, namely Studio 3.1® (Anne Solutions®, SP, Brazil) (ST) and Implant Viewer 2.817® (Anne Solutions®, SP, Brazil) (IV). The linear measurements were the mandibular height (MH) and width (MW), and the distance from the alveolar ridge to the mandibular canal (AC). To validate the measurements, the mandibles were sectioned in the marked regions and measured...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Computed tomography; Dental implant; Morphology; Radiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602865

N deposition affects allelopathic potential of Amaranthus retroflexus with different distribution regions
Provedor de dados: 42
Autores: WANG,CONGYAN; LIU,JUN; ZHOU,JIAWEI.
ABSTRACT This study aims to determine the allelopathic potential of Amaranthus retroflexus (Ar) with different climatic zones on seed germination and growth of A. tricolor (At) treated with a gradient N addition. Ar leaf extracts only displayed significantly allelopathic potential on the underground growth of Ar but not the aboveground growth of At. The allelopathic potential of Ar leaf extracts on root length of At were enhanced under N addition and there may be a N-concentration-dependent relationship. The effects of the extracts of Ar leaves that collected from Zhenjiang on seed germination and growth of At may be higher than that collected from Jinan especially on root length of At under medium N addition. This reason may be the contained higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathic potential; Invasive plant; N deposition; Seed germination; Amaranthus retroflexus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300919

High consumption of sucrose induces DNA damage in male Wistar rats
Provedor de dados: 42
Autores: FRANKE,SILVIA I.R.; MOLZ,PATRÍCIA; MAI,CAMILA; ELLWANGER,JOEL H.; ZENKNER,FERNANDA F.; HORTA,JORGE A.; PRÁ,DANIEL.
ABSTRACT The purpose of this study was to determine the effects of the high consumption of sucrose on the levels of DNA damage in blood, hippocampus and bone marrow of rats. Male Wistar rats were treated for 4 months with sucrose (10% for 60 initial days and 34% for the following 60 days) in drinking water, and then, glycemia and glycated hemoglobin (A1C) were measured. Levels of DNA damage in blood and hippocampus were evaluated by the comet assay. The micronucleus test was used to evaluate chromosomal damages in the bone marrow. The sucrose treatment significantly increased (p&lt;0.01) the serum glucose levels (~20%) and A1C (~60%). The level of primary DNA damage was significantly increased (p&lt;0.05) in hippocampal cells (~60%) but not in peripheral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Comet assay; Diabetes; DNA damage; Glycated hemoglobin; Micronucleus; Sucrose.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602657

Evaluation of cytogenotoxicity, antioxidant and hypoglycemiant activities of isolate compounds from Mansoa hirsuta D.C. (Bignoniaceae)
Provedor de dados: 42
Autores: PEREIRA,JOQUEBEDE R.; QUEIROZ,RAPHAEL F.; SIQUEIRA,ERLÂNIA A. DE; BRASILEIRO-VIDAL,ANA CHRISTINA; SANT’ANA,ANTÔNIO E.G.; SILVA,DANIEL M.; AFFONSO,PAULO R.A. DE MELLO.
ABSTRACT Mansoa hirsuta (Bignoniaceae) is a native plant from caatinga in Brazilian semiarid. This plant has been locally used as antimicrobial and hypoglycemiant agents, but their action mechanisms and toxicity remain largely unknown. Therefore, we evaluated the composition and antioxidant, cytoprotective and hypoglycemiant effects of raw extract, fractions and compounds from leaves of M. hirsuta. The cytogenotoxic effects of ursolic and oleanolic acids, the main phytotherapic components of this plant, were assessed. The raw extract and fractions presented steroids, saponins, flavonols, flavanonols, flavanones, xanthones, phenols, tannins, anthocyanins, anthocyanidins and flavonoids. The ethyl acetate fraction inhibited efficiently the cascade of lipid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Caatinga; Cytotoxicity; Hypoglycemiant; Phytochemistry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100317

Antiproliferative activity in tumor cell lines, antioxidant capacity and total phenolic, flavonoid and tannin contents of  Myrciaria floribunda
Provedor de dados: 42
Autores: TIETBOHL,LUIS A.C.; OLIVEIRA,ADRIANA P.; ESTEVES,RICARDO S.; ALBUQUERQUE,RICARDO D.D.G.; FOLLY,DIOGO; MACHADO,FRANCISCO P.; CORRÊA,ARTHUR L.; SANTOS,MARCELO G.; RUIZ,ANA L.G.; ROCHA,LEANDRO.
ABSTRACT Myrciaria floribunda (H. West ex Willd.) O. Berg, Myrtaceae, is a native plant species of the Atlantic Rain Forest, from north to south of Brazil. The lyophilized ethyl acetate extract from the leaves of M. floribunda was investigated for its antiproliferative activity in tumor cell lines, antioxidant capacity and its total phenolic, flavonoid and tannin contents. Antiproliferative activity was tested in vitro against seven human cancer cells and against immortalized human skin keratinocytes line (HaCat, no cancer cell). Antioxidant activity was determined using 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and oxygen radical absorbing capacity (ORAC) assays and total phenolic, flavonoid and tannin contents were determined by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antiproliferative; Flavonoids; Myrciaria floribunda; Phenols.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301111

7-epi-griffonilide, a new lactone from Bauhinia pentandra: complete 1H and 13C chemical shift assignments
Provedor de dados: 42
Autores: ALMEIDA,MACIA C.S. DE; SOUZA,LUCIANA G.S.; FERREIRA,DANIELE A.; PINTO,FRANCISCO C.L.; OLIVEIRA,DÉBORA R. DE; SANTIAGO,GILVANDETE M.P.; MONTE,FRANCISCO J.Q.; BRAZ-FILHO,RAIMUNDO; LEMOS,TELMA L.G. DE.
ABSTRACT A new lactone, 7-epi-griffonilide (1), and six known compounds, 2, 3a - 3c, 4a and 4b, were isolated from the leaves of Bauhinia pentandra (Fabaceae). The structures elucidation of 1 and 2 were based on detailed 2D NMR techniques and spectral comparison with related compounds, leading to complete assignment of the 1H and 13C NMR spectra.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bauhinia pentandra; Fabaceae; Cyanoglucoside; Lactones; RMN.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100065

Post-fire regeneration in seasonally dry tropical forest fragments in southeastern Brazil
Provedor de dados: 42
Autores: COSTA,MAYKE B.; MENEZES,LUIS FERNANDO T. DE; NASCIMENTO,MARCELO T.
ABSTRACT Seasonally dry tropical forest is one of the highly threatened biome. However, studies on the effect of fire on these tree communities are still scarce. In this context, a floristic and structural survey in three forest areas in the southeast of Brazil that were affected by fire between 14 and 25 years ago was performed with the objective of evaluating post-fire regeneration. In each site, five systematically placed plots (25 m x 25 m each) were established. The more recently burnt site had significantly lower values of richness and diversity than the other two sites. However, the sites did not differ in density and basal area. Annona dolabripetala, Astronium concinnum, Joannesia princeps and Polyandrococos caudescens were within the 10 most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Fire ecology; Forest succession; Forest structure; Post-fire recovery.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602687

Phenotypic and genotypic characterization of Salmonella spp. isolated from foods and clinical samples in Brazil
Provedor de dados: 42
Autores: MIRANDA,ANDREA L.; CORDEIRO,SORAIA M.; REIS,JOICE N.; CARDOSO,LUCAS G.; GUIMARÃES,ALAÍSE G.
ABSTRACT Increasing antimicrobial resistance in Salmonella species has been a serious problem for public health worldwide. This study examines Salmonella spp. recovered from foods and clinical samples on serotype, antimicrobial resistance and PFGE genotypes. It identified 91 salmonellae, belonging to 31 different serotypes, from 36 isolates from food and 55 clinical samples. Salmonella Infantis (16.5%) and Salmonella Enteritidis (13.7%) are the most common among food isolates, whereas Salmonella Enteritidis (29.0%) and Salmonella Typhimurium (16.0%) mainly causes human salmonellosis. Antimicrobial susceptibility data showed that 63.0% of the isolates were fully susceptible to 12 antibiotics tested. Nalidixic acid showed high resistance rates, 32.7% and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; Salmonella Infantis; Salmonella Enteritidis; Antimicrobial resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301143

Phenological characterization and temperature requirements of Annona squamosa L. in the Brazilian semiarid region
Provedor de dados: 42
Autores: MENDES,DÉBORA S.; PEREIRA,MARLON C.T.; NIETSCHE,SILVIA; SILVA,JOSEILTON F.; ROCHA,JOSIELE S.; MENDES,ATHOS H.; XAVIER,HELISSON R.A.; SANTOS,RAYANE C. DOS.
ABSTRACT  The phenological growth stages of various species of monocotyledonous and dicotyledonous plants can be uniformly coded using the Biologische Bundesanstalt, Bundessortenamt, und Chemische Industrie (BBCH) scale. The aim of the present study was to determine the duration of different phenological stages and the temperature requirements of the sugar-apple, Annona squamosa, during two crop cycles in the semiarid region of Brazil. Phenological stages were divided into eight of ten possible principal stages: (0) bud development, (1) leaf development, (3) shoot/branch development, (5) inflorescence emergence, (6) flowering, (7) fruit development, (8) fruit maturity and (9) senescence and the beginning of dormancy. The phenological cycle of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BBCH; Sugar-apple; Degree days; Phenology; Pruning timing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502293

Compatibility of  Azospirillum brasilense and  Pseudomonas  fluorescens in growth promotion of groundnut ( Arachis  hypogea L.)
Provedor de dados: 42
Autores: PRASAD,ANDHARE A.; BABU,SUBRAMANIAN.
ABSTRACT We attempted to study the compatibility among plant beneficial bacteria in the culture level by growing them near in the nutrient agar plates. Among all the bacteria tested, Rhizobium was found to inhibit the growth of other bacteria. From the compatible group of PGPR, we have selected one biofertilizer (Azospirillum brasilense strain TNAU) and one biocontrol agent (Pseudomonas fluorescens strain PF1) for further studies in the pot culture. We have also developed a bioformulation which is talc powder based, for individual bacteria and mixed culture. This formulation was used as seed treatment, soil application, seedling root dip and foliar spray in groundnut crop in vitro germination conditions. A. brasilense was found to enhance the tap root...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azospirillum brasilense; Groundnut; PGPR; Pseudomonas fluorescens.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301027

Evidence of the Presence of Thyroid Hormones in Achatina fulica Snails
Provedor de dados: 42
Autores: LUSTRINO,DANILO; SILVA,ALBA C.M.; ARAUJO,IRACEMA G.; TUNHOLI,VICTOR M.; TUNHOLI-ALVES,VINÍCIUS M.; CASTRO,ROSANE N.; CARVALHO,DENISE P.; PINHEIRO,JAIRO; MARASSI,MICHELLE P.
ABSTRACT The objective of this study was to identify thyroid hormones and to examine their putative site of synthesis in Achatina fulica snails. For this purpose, radioimmunoassays were performed for T3 and T4 before and after long starvation with or without hemolymph deproteinization. Sodium/iodide symporter activity in vivo was analyzed through 125I administration with and without KClO4 pretreatment. Only T4 was detected, and its concentration decreased due to starvation or deproteinization. However, high-performance liquid chromatography analysis also showed the presence of T2 and T3 apart from T4, but rT3 was not detected in the A. fulica hemolymph. The sodium/iodide symporter activity was greater in cerebral ganglia than digestive gland, but KClO4...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Achatina fulica; Sodium/iodine symport; Thyroid hormones; Thyroglobulin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502181

Chemical composition, antioxidant and antibacterial activities of essential oils from leaves and flowers of Eugenia klotzschiana Berg (Myrtaceae)
Provedor de dados: 42
Autores: CARNEIRO,NÁRGELLA S.; ALVES,CASSIA C.F.; ALVES,JOSÉ M.; EGEA,MARIANA B.; MARTINS,CARLOS H.G.; SILVA,THAYNÁ S.; BRETANHA,LIZANDRA C.; BALLESTE,MAIRA P.; MICKE,GUSTAVO A.; SILVEIRA,EDUARDO V.; MIRANDA,MAYKER L.D.
ABSTRACT Many essential oils (EOs) of different plant species possess interesting antimicrobial effects on buccal bacteria and antioxidant properties. Eugenia klotzschiana Berg (pêra-do-cerrado, in Portuguese) is a species of Myrtaceae with restricted distribution in the Cerrado. The essential oils were extracted through the hydrodistillation technique using a modified Clevenger apparatus (2 hours) and chemically characterized by GC-MS. The major compounds were α-copaene (10.6 %) found in oil from leaves in natura, β-bisabolene (17.4 %) in the essential oil from dry leaves and α-(E)-bergamotene (29.9 %) in oil from flowers. The antioxidant activity of essential oils showed similarities in both methods under analysis (DPPH and ABTS˙+) and the results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant activity; Antibacterial activity; Brazilian pear; Drying; Eugenia klotzschiana; Sesquiterpenes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401907

First Assessment of Carbon Stock in the Belowground Biomass of Brazilian Mangroves
Provedor de dados: 42
Autores: SANTOS,DANIEL M.C.; ESTRADA,GUSTAVO C.D.; FERNANDEZ,VIVIANE; ESTEVAM,MARCIEL R.M.; SOUZA,BRUNNA T. DE; SOARES,MÁRIO L.G.
ABSTRACT Studies on belowground roots biomass have increasingly reported the importance of the contribution of this compartment in carbon stock maintenance in mangrove forests. To date, there are no estimates of this contribution in Brazilian mangrove forests, although the country has the second largest area of mangroves worldwide. For this study, trenches dug in fringing forests in Guaratiba State Biological Reserve (Rio de Janeiro, Brazil) were used to evaluate the contribution of the different classes of roots and the vertical stratification of carbon stock. The total carbon stock average in belowground roots biomass in these forests was 104.41 ± 20.73 tC.ha−1. From that, an average of 84.13 ± 21.34 tC.ha−1 corresponded to the carbon stock only in fine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Global climate change; Guaratiba State Biological Reserve; Roots; Sepetiba bay; Trench method.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401579

Landslide hazard mapping, DNA damage induced by sucrose and the biotechnology potential of sponge-associated bacteria communities
Provedor de dados: 42
Autores: BONATTO,DIEGO.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602545

Sampling procedures for inventory of commercial volume tree species in Amazon Forest
Provedor de dados: 42
Autores: NETTO,SYLVIO P.; PELISSARI,ALLAN L.; CYSNEIROS,VINICIUS C.; BONAZZA,MARCELO; SANQUETTA,CARLOS R.
ABSTRACT The spatial distribution of tropical tree species can affect the consistency of the estimators in commercial forest inventories, therefore, appropriate sampling procedures are required to survey species with different spatial patterns in the Amazon Forest. For this, the present study aims to evaluate the conventional sampling procedures and introduce the adaptive cluster sampling for volumetric inventories of Amazonian tree species, considering the hypotheses that the density, the spatial distribution and the zero-plots affect the consistency of the estimators, and that the adaptive cluster sampling allows to obtain more accurate volumetric estimation. We use data from a census carried out in Jamari National Forest, Brazil, where trees with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptive cluster sampling; Spatial species distribution; Volume estimation; Zero-plots.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401829

Selection of alfalfa genotypes for resistance to the foliar pathogen Curvularia geniculata
Provedor de dados: 42
Autores: ÁVILA,MARIANA R.; DALL’AGNOL,MIGUEL; MARTINELLI,JOSÉ A.; SILVA,GERARDA B.P. DA; BREMM,CAROLINA; NUNES,TAMYRIS.
ABSTRACT Foliar diseases impose severe restrictions on the persistence and productivity of Medicago sativa, both of which may be increased by developing disease resistant and more competitive genotypes that can improve pasture quality. We found Curvularia geniculata as the principal alfalfa foliar pathogen in the Brazilian state of Rio Grande do Sul (RS). Growth chamber experiments evaluated the resistance of alfalfa genotypes ‘E1C4’, ‘CPPSul’, ‘ABT 805’ and ‘CUF-101’ to C. geniculata as compared the control ‘Crioula’ genotype. These genotypes were also evaluated in field trials at a sea level site in Eldorado do Sul in central RS and at two sites £200 m above sea level, one in Bagé municipality in south west RS and the other at a farm near the town of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lucerne; Invasive plants; Foliar pathogen; Forage legumes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401801

Reduction of the DNA damages, Hepatoprotective Effect and Antioxidant Potential of the Coconut Water, ascorbic and Caffeic Acids in Oxidative Stress Mediated by Ethanol
Provedor de dados: 42
Autores: BISPO,VANDERSON S.; DANTAS,LUCAS S.; CHAVES FILHO,ADRIANO B.; PINTO,ISABELLA F.D.; SILVA,RAILMARA P. DA; OTSUKA,FELIPE A.M.; SANTOS,RODRIGO B.; SANTOS,ALINE C.; TRINDADE,DANIELLE J.; MATOS,HUMBERTO R.
ABSTRACT Hepatic disorders such as steatosis and alcoholic steatohepatitis are common diseases that affect thousands of people around the globe. This study aims to identify the main phenol compounds using a new HPLC-ESI+-MS/MS method, to evaluate some oxidative stress parameters and the hepatoprotective action of green dwarf coconut water, caffeic and ascorbic acids on the liver and serum of rats treated with ethanol. The results showed five polyphenols in the lyophilized coconut water spiked with standards: chlorogenic acid (0.18 µM), caffeic acid (1.1 µM), methyl caffeate (0.03 µM), quercetin (0.08 µM) and ferulic acid (0.02 µM) isomers. In the animals, the activity of the serum γ-glutamyltranspeptidase (γ-GT) was reduced to 1.8 I.U/L in the coconut...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coconut water; Ethanol; Oxidative stress; Phenolic compounds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301095

Antigenotoxicity protection of Carapa guianensis oil against mitomycin C and cyclophosphamide in mouse bone marrow
Provedor de dados: 42
Autores: LEMES,SUSY R.; CHAVES,DWIGHT A.; SILVA JÚNIOR,NELSON J. DA; CARNEIRO,CRISTIENE C.; CHEN-CHEN,LEE; ALMEIDA,LUCIANE M. DE; GONÇALVES,PABLO J.; MELO-REIS,PAULO R. DE.
ABSTRACT The aim of this study was to evaluate the possible protective of C. guianensis oil against MMC and CP, which are direct- and indirect-acting chemical mutagens, using the micronucleus test. Three experiments were performed. First the C. guianensis oil was co-administered to mice at doses of 250, 500 and 1000 mg/kg bw with 4 mg/kg bw MMC or 50 mg/kg bw CP. Second, the mutagenic drug (CP) was administered ip 50 mg/kg bw and after 6 and 12 hours 250 and 500 mg/kg bw of C. guianensis oil were administered. In the last, C. guianensis oil was administrated (250 and 500 mg/kg bw) during five days and after it was administered ip 50 mg/kg bw CP. The results obtained showed that the C. guianensis oil is not cytotoxic neither genotoxic to mouse bone marrow....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antigenotoxic; Carapa guianensis; Micronucleus; Oil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502043

Psychotria viridis: Chemical constituents from leaves and biological properties
Provedor de dados: 42
Autores: SOARES,DÉBORA B.S.; DUARTE,LUCIENIR P.; CAVALCANTI,ANDRÉ D.; SILVA,FERNANDO C.; BRAGA,ARIADNE D.; LOPES,MIRIAM T.P.; TAKAHASHI,JACQUELINE A.; VIEIRA-FILHO,SIDNEY A.
ABSTRACT The phytochemical study of hexane, chloroform and methanol extracts from leaves of Psychotria viridis resulted in the identification of: the pentacyclic triterpenes, ursolic and oleanolic acid; the steroids, 24-methylene-cycloartanol, stigmasterol and β-sitosterol; the glycosylated steroids 3-O-β-D-glucosyl-β-sitosterol and 3-O-β-D-glucosyl-stigmasterol; a polyunsaturated triterpene, squalene; the esters of glycerol, 1-palmitoylglycerol and triacylglycerol; a mixture of long chain hydrocarbons; the aldehyde nonacosanal; the long chain fat acids hentriacontanoic, hexadecanoic and heptadenoic acid; the ester methyl heptadecanoate; the 4-methyl-epi-quinate and two indole alkaloids, N,N-dimethyltryptamine (DMT) and N-methyltryptamine. The chemical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Psychotria viridis Rubiaceae N; N-dimethyltryptamine B16F10 4T1 tumor cells.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300927

Diameter distribution in a Brazilian tropical dry forest domain: predictions for the stand and species
Provedor de dados: 42
Autores: LIMA,ROBSON B. DE; BUFALINO,LINA; ALVES JUNIOR,FRANCISCO T.; SILVA,JOSÉ A.A. DA; FERREIRA,RINALDO L.C.
ABSTRACT Currently, there is a lack of studies on the correct utilization of continuous distributions for dry tropical forests. Therefore, this work aims to investigate the diameter structure of a brazilian tropical dry forest and to select suitable continuous distributions by means of statistic tools for the stand and the main species. Two subsets were randomly selected from 40 plots. Diameter at base height was obtained. The following functions were tested: log-normal; gamma; Weibull 2P and Burr. The best fits were selected by Akaike's information validation criterion. Overall, the diameter distribution of the dry tropical forest was better described by negative exponential curves and positive skewness. The forest studied showed diameter distributions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga domain; Continuous distribution; Diameter structure; Forest management; Maximum likelihood.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301189

Thermodynamic bounds for existence of normal shock in compressible fluid flow in pipes
Provedor de dados: 42
Autores: COLLE,SERGIO.
Abstract The present paper is concerned with the thermodynamic theory of the normal shock in compressible fluid flow in pipes, in the lights of the pioneering works of Lord Rayleigh and G. Fanno. The theory of normal shock in pipes is currently presented in terms of the Rayleigh and Fanno curves, which are shown to cross each other in two points, one corresponding to a subsonic flow and the other corresponding to a supersonic flow. It is proposed in this paper a novel differential identity, which relates the energy flux density, the linear momentum flux density, and the entropy, for constant mass flow density. The identity so obtained is used to establish a theorem, which shows that Rayleigh and Fanno curves become tangent to each other at a single sonic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Normal shocks in pipes; Compressible fluid flow; Gas dynamics; Second Law analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301313

Biological Activity of Piper aduncum extracts on Anticarsia gemmatalis (Hübner) (Lepidoptera: Erebidae) and Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)
Provedor de dados: 42
Autores: LUCENA,DAIANE C.; BERTHOLDO-VARGAS,LUCIA R.; SILVA,WILSON C.; MACHADO,AARON F.; LOPES,TAMIRIS S.; MOURA,SIDNEI; BARROS,NEIVA M.
ABSTRACT Piper aduncum found naturally in the Amazon and southeastern Brazil, is known for its secondary metabolites that have activity on insects. Anticarsia gemmatalis and Spodoptera frugiperda are among the major insect pests associated with agricultural production. This research evaluated the biological activity of hexane, ethyl acetate, and ethanol extracts of P. aduncum leaves on mortality and duration of larval and pupal periods, as well as weight, width, and length of A. gemmatalis and S. frugiperda pupae. The mortality of A. gemmatalis larvae in trials with P. aduncum extracts were 93.3% (hexane) and 90% (ethyl acetate), estimating LC50 of 6.35 and 5.79 mg/mL, respectively. Mortality in S. frugiperda submitted to the hexane extract ranged from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fall armyworm; Velvetbean caterpillar; Pest management; Plant extracts.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401869

Evaluation of ovarian structures using computerized microtomography
Provedor de dados: 42
Autores: PAULINI,FERNANDA; CHAVES,SACHA B.; RÔLO,JOSÉ LUIZ J.P.; AZEVEDO,RICARDO B. DE; LUCCI,CAROLINA M.
ABSTRACT Visualization and clear understanding of the ovarian structures are important in determining the stage of oestrus, helping to diagnose several pathologies and supporting advances in reproductive technologies. In this research, computerized microtomography (microCT) was used to explore and characterize the ovarian structure of seven mammalian species. Ovaries of rats, female dog, queens, cows, mares, sows and a female donkey were used. After microCT scanning, the same samples were prepared for histologic evaluation, used here as a validation criterion. It was possible to distinguish regions of the cortex and medulla, visualize the morphology and distribution of blood vessels, clearly observe corpus luteum and antral follicles, and visualize oocytes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovarian follicle; Blood vessels; Histology; Tomography; Ovary.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502131

Simultaneous Determination of Furan and Vinyl Acetate in Vapor Phase of Mainstream Cigarette Smoke by GC-MS
Provedor de dados: 42
Autores: XU,AIFEI; FAN,ZHONG; CHEN,ZHIYAN; ZHOU,YUN; LIU,SHAOHUA; HUANG,SHIJIE; XU,XUEQUIN; LONG,CONGYUN; WANG,WEIGANG; ZHU,JING; LI,XIAOLAN; XU,CHUNPING.
ABSTRACT A simple and sensitive method for simultaneous determination of furan and vinyl acetate (VA) in vapor phase of mainstream cigarette smoke with cold trap and gas chromatography-mass spectrometry (GC-MS) was developed. A Cambridge filter pad (CFP) was placed in front of the impingers of smoking machine to remove the particle phase from cigarette smoke. Furan and VA in vapor phase of mainstream cigarette smoke were collected in two impingers connected in series by filled with methanol at -78°C. The solutions were added with deuterium-labeled furan-d4 and VA-d6 as internal standards and analyzed by GC-MS. The results showed that the calibration curves for furan and VA were linear (r2 &gt; 0.9995) over the studied concentration range. The intra- and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vapor phase; Mainstream cigarette smoke; Furan; Vinyl acetate; Cold trap; Gas chromatography-mass spectrometry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200383

Carbon and nutrient stocks of three Fabaceae trees used for forest restoration and subjected to fertilization in Amazonia
Provedor de dados: 42
Autores: JAQUETTI,ROBERTO K.; GONÇALVES,JOSÉ FRANCISCO C.
ABSTRACT Amazonia is crucial to global carbon cycle. Deforestation continues to be one of the main causes of the release of C into the atmosphere, but forest restoration plantations can reverse this scenario. However, there is still diffuse information about the C and nutrient stocks in the vegetation biomass. We investigated the carbon and nutrient stocks of Fabaceae trees (Inga edulis, Schizolobium amazonicum and Dipteryx odorata) subjected to fertilization treatments (T1 - no fertilization; T2 - chemical; T3 - organic; and T4 - organic and chemical fertilization) in a degraded area of the Balbina Hydroelectric Dam, AM - Brazil. As an early successional species, I. edulis stocked more C and nutrients than the other two species independent of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass; Degraded ecosystems; Plant nutrition; Tropical tree species.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401761

Implementation of dental specialty centers: a descriptive analysis of the current status in the Brazilian territory
Provedor de dados: 42
Autores: ESTERY,LAURA; CERICATO,GRAZIELA O.; RIGO,LILIAN; RODE,SIGMAR M.; LIMA,IGOR F.P.; PARANHOS,LUIZ R.
ABSTRACT This study aimed to assess the current implementation status of Dental Specialty Centers (Centros de Especialidades Odontológicas - CEO) in Brazil. The sample included CEOs implemented up to November 2015 in the 27 Brazilian federative units. Data were obtained directly from the database of the Informatics Department of the Brazilian Unified Health System, according to the National Registry of Health Facilities (NRHF) of Dental Specialty Centers of all Brazilian regions. Primary care data were also collected from the cities with implemented CEOs, including coverage status of the Family Health Strategy (FHS) and number of Oral Health Teams (OHT) I and II, at 2 collection periods (January 2006 and November 2015). There were 1019 CEOs implemented in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Healthcare; Secondary healthcare; Oral health; Policies of dental specialty centers.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602843

Differences between NMRI and DBA/2J mice in the development of somites and susceptibility to methylnitrosourea-induced skeleton anomalies
Provedor de dados: 42
Autores: CHAHOUD,IBRAHIM; PAUMGARTTEM,FRANCISCO J.R.
ABSTRACT The development of DBA/2J mouse strain embryos is nearly 12 h - or 6 somite pairs - delayed as compared to the outbred NMRI mouse embryos of the same age on gestation days (GD) 8-12. To evaluate inter-strain differences in susceptibility to teratogens, dams were treated with methylnitrosourea (MNU, 5 mg/kg body weight i.p.) on defined gestation days (NMRI: GD 9, 91/2 or 10; DBA/2J: GD 10 or 101/2). Skeletal anomalies produced by MNU on both mouse strains varied with the GD of treatment. The pattern of anomalies produced by MNU on a given GD markedly differed between the two mouse strains, yet they were similar -with a few exceptions- when exposures at equivalent embryonic stages are compared. Findings from this study indicated that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkylating agents; Embryo development; Phase specificity; Mouse strains; Skeleton anomalies; Teratogenicity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200635

Effect of drying method on mechanical, thermal and water absorption properties of enzymatically crosslinked gelatin hydrogels
Provedor de dados: 42
Autores: SIMONI,RAYSSA C.; LEMES,GISLAINE F.; FIALHO,SANDRA; GONÇALVES,ODINEI H.; GOZZO,ANGELA M.; CHIARADIA,VIVIANE; SAYER,CLAUDIA; SHIRAI,MARIANNE A.; LEIMANN,FERNANDA V.
ABSTRACT Enzymatically crossliked gelatin hydrogel was submitted to two different drying methods: air drying and freeze drying. The resulting polymeric tridimensional arrangement (compact or porous, respectively) led to different thermal and swelling properties. Significant differences (p &lt; 0.05) on thermal and mechanical characteristics as well as swelling in non-enzymatic gastric and intestinal simulated fluids (37 ºC) were detected. Water absorption data in such media was modelled according to Higuchi, Korsmeyer-Peppas, and Peppas-Sahlin equations. Freeze dried hydrogel showed Fickian diffusion behavior while air dried hydrogels presented poor adjustment to Higuchi model suggesting the importance of the relaxation mechanism at the beginning of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air drying; Freeze drying; Hydrogel; Transglutaminase.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200745

Interactive effects of genotype x environment on the live weight of GIFT Nile tilapias
Provedor de dados: 42
Autores: OLIVEIRA,SHEILA N. DE; RIBEIRO,RICARDO P.; OLIVEIRA,CARLOS A.L. DE; ALEXANDRE FILHO,LUIZ; OLIVEIRA,ALINE M.S.; LOPERA-BARRERO,NELSON M.; SANTANDER,VICTOR F.A.; SANTANA,RENAN A.C.
ABSTRACT In this paper, the existence of a genotype x environment interaction for the average daily weight in GIFT Nile tilapia (Oreochromis niloticus) in different regions in the state of Paraná (Brazil) was analyzed. The heritability results were high in the uni-characteristic analysis: 0.71, 0.72 and 0.67 for the cities of Palotina (PL), Floriano (FL) and Diamond North (DN), respectively. Genetic correlations estimated in bivariate analyzes were weak with values between 0.12 for PL-FL, 0.06 for PL and 0.23 for DN-FL-DN. The Spearman correlation values were low, which indicated a change in ranking in the selection of animals in different environments in the study. There was heterogeneity in the phenotypic variance among the three regions and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oreochromis niloticus; Fish; Genetic gain; Heritability; Genetic correlation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602931

Natural Compounds from Mexican Medicinal Plants as Potential Drug Leads for Anti-Tuberculosis Drugs
Provedor de dados: 42
Autores: GÓMEZ-CANSINO,ROCIO; GUZMÁN-GUTIÉRREZ,SILVIA LAURA; CAMPOS-LARA,MARÍA GUADALUPE; ESPITIA-PINZÓN,CLARA INES; REYES-CHILPA,RICARDO.
ABSTRACT In Mexican Traditional Medicine 187 plant species are used in the treatment of respiratory conditions that may be associated with tuberculosis. In this contribution, we review the ethnobotany, chemistry and pharmacology of 63 species whose extracts have been assayed for antimycobacterial activity in vitro. Among these, the most potent is Aristolochia brevipes (MIC= 12.5 µg/mL), followed by Aristolochia taliscana, Citrus sinensis, Chrysactinia mexicana, Persea americana, and Olea europaea (MIC&lt;64 µg/mL). Other potent extracts (inhibition &gt; 95%, 50 µg/mL) include: Amphipterygium adstringens, Larrea divaricata, and Phoradendron robinsoni. Several active compounds have been identified, the most potent are: Licarin A (isolated from A. taliscana),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Medicinal plants; Natural products; Mycobacterium tuberculosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100031

Evaluation of anaerobic threshold in non-pregnant and pregnant rats
Provedor de dados: 42
Autores: NETTO,ALINE OLIVEIRA; MACEDO,NATHÁLIA C.D.; GALLEGO,FRANCIANE Q.; SINZATO,YURI K.; VOLPATO,GUSTAVO T.; DAMASCENO,DÉBORA C.
ABSTRACT Several studies present different methodologies and results about intensity exercise, and many of them are performed in male rats. However, the impact of different type, intensity, frequency and duration of exercise on female rats needs more investigation. From the analysis of blood lactate concentration during lactate minimum test (LacMin) in the swimming exercise, the anaerobic threshold (AT) was identified, which parameter is defined as the transition point between aerobic and anaerobic metabolism. LacMin test is considered a good indicator of aerobic conditioning and has been used in prescription of training in different exercise modalities. However, there is no evidence of LacMin test in female rats. The objective was to determine AT in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exercise; Swimming; Anaerobic threshold; Lactate; Pregnancy; Rats.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602749

Looking for attitudes related to amphibian species decline: how are peer-reviewed publications of education activities compared to ecological research?
Provedor de dados: 42
Autores: MORMUL,ROGER P.; MORMUL,TAYLA D.S.; SANTOS,GUSTAVO M.B.; SANTANA,ANA R.A.
ABSTRACT Biodiversity decline has been the focus of discussions in the last decade, especially on the amphibian species decline. After a scientometric analysis using international databases, we found that the number of peer-reviewed articles considering education practices related to the theme increased along with the number of ecological researches. However, the increase in ecological researches is much higher than the increase in publications of education practices. Studies suggest that conservation attitudes are important and that education practices are an important tool for improving human perceptions on this subject. In this sense, increase the publication of projects and programs results related to local education practices in international journals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental education; Conservation practices; Teaching activities; Amphibian extinctions; Theory and practice.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200491

Reproductive biology of the Green Ground Snake Erythrolamprus poecilogyrus sublineatus (Serpentes: Dipsadidae) in Subtropical Brazil
Provedor de dados: 42
Autores: QUINTELA,FERNANDO M.; MARQUES,WILIAM C.; LOEBMANN,DANIEL.
ABSTRACT  We investigated reproductive features of the dipsadid snake Erythrolamprus poecilogyrus sublineatus in the southernmost Brazilian coast, a subtropical region characterized by well-marked seasons. Females are significantly smaller than males, have a shorter tail, and reach sexual maturity at later times along their development. In contrast to tropical subspecies, E. p. sublineatus females presented a seasonal pattern, with secondary follicles occurring from late winter to early autumn and egg production restricted to the whole spring and early summer. Males presented seasonal variation in testes volume (increase in autumn and decrease in winter) while no significant seasonal variation was found in ductus deferens width. The number of oviductal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecology; Neotropics; Pampa Biome; Reproduction; Squamata.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502189

New seminal variety of Stevia rebaudiana: Obtaining fractions with high antioxidant potential of leaves
Provedor de dados: 42
Autores: MILANI,PAULA G.; FORMIGONI,MAYSA; DACOME,ANTONIO S.; BENOSSI,LIVIA; COSTA,CECÍLIA E.M. DA; COSTA,SILVIO C. DA.
ABSTRACT The aim of this study was to determine the composition and antioxidant potential of leaves of a new variety of Stevia rebaudiana (Stevia UEM-13). Stevia leaves of UEM-13 contain rebaudioside A as the main glycoside, while most wild Stevia plants contain stevioside. Furthermore can be multiplied by seed, which reduces the cost of plant culture techniques as other clonal varieties are multiplied by buds, requiring sophisticated and expensive seedling production systems. Ethanol and methanol were used in the extraction to determine the bioactive compounds. The methanolic extract was fractionated sequentially with hexane, chloroform, ethyl acetate and isobutanol, and the highest concentration of phenolic compounds and flavonoids was obtained in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioactive compounds; Glycosides; Leaf extracts; Phenolic compounds; New cultivar of Stevia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401841

Active caspase-3 expression levels as bioindicator of individual radiosensitivity
Provedor de dados: 42
Autores: SANTOS,NEYLIANE F.G. DOS; SILVA,RAFAEL F.; PINTO,MARCELA M.P.L.; SILVA,EDVANE B. DA; TASAT,DEBORAH R.; AMARAL,ADEMIR.
ABSTRACT Several molecules and events involved in cell response to radiation-induced damage have been investigated towards a personalized radiotherapy. Considering the importance of active caspase-3 in the proteolytic cascade that ensures radiation-induced apoptosis execution, this research was designed to evaluate the expression levels of this protein as a bioindicator of individual radiosensitivity. Peripheral blood samples of 10 healthy individuals were gamma-irradiated (cobalt-60 source) with 1, 2 and 4 Gy (control: non-irradiated samples), and active caspase-3 expression levels were measured in lymphocytes, by flow cytometry, ex vivo and after different times of in vitro incubation (24, 48 and 72 hours). Short-term incubation of 24 h was the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Active caspase-3; Apoptosis; Flow cytometry; Ionizing radiation; Lymphocytes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200649

Effect of phosphorus on arsenic uptake and metabolism in rice cultivars differing in phosphorus use efficiency and response
Provedor de dados: 42
Autores: FARIAS,JÚLIA G.; BERNARDY,KATIELI; SCHWALBERT,RAÍSSA; DEL FRARI,BIANCA K.; MEHARG,ANDREW; CAREY,MANUS; MARQUES,ANDERSON C.R.; SIGNES-PASTOR,ANTONIO; SAUSEN,DARLENE; SCHORR,MÁRCIO R.W.; TAVARES,MIRIAN S.; NICOLOSO,FERNANDO T.
ABSTRACT A hydroponic experiment was carried out to investigate the effect of phosphorus (P) nutrition on arsenic (As) uptake and translocation within the seedlings of rice cultivars. The experiment occurred in three stages: I 5 days of acclimatization (nutritive solution); II 10 days under P (0.0 and 0.09 mM) and As (0.0 and 100 mM) treatments; III 5 days under recovery. The As exposure had significant effect reducing dry weights of shoots or roots, resulted in elevated concentrations of As in shoot tissues. BR-IRGA 409 showed the highest susceptibility to As in biomass production and root system parameters regardless the P level. This cultivar showed contrasting responses of As translocation to shoot tissue dependent on P levels, with the highest As...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Oryza sativa; Phosphate; Arsenic uptake.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100163

Parasite infracommunities of  Leporinus friderici: A comparison of three tributaries of the Jurumirim Reservoir in southeastern Brazil
Provedor de dados: 42
Autores: YAMADA,FÁBIO H.; BONGIOVANI,MARCELA F.; YAMADA,PRISCILLA O.F.; SILVA,REINALDO J. DA.
ABSTRACT The degradation and homogenization of natural habitats is considered a major cause of biotic homogenization. Many studies have been undertaken on the effects of dams on aquatic wildlife, in particular fish assemblages. But how do dams affect the parasitic fauna of such fish? The aim of the present study was to examine parasitic similarity, comparing the diversity and structure of parasite communities of Leporinus friderici (Characiformes, Anostomidae) in three upstream tributaries under the influence of the Jurumirim Dam on the Upper Paranapanema River in southeastern Brazil. The present study did not find any significant differences in parasite communities among populations of L. friderici in the three upstream tributaries. This result highlights...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical region; Leporinus friderici; Metazoan parasites; Similarity; Watershed conservation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300953

Moderate pathogenic effect of Ligophorus uruguayense (Monogenoidea, Ancyrocephalidae) in juvenile mullet Mugil liza (Actinopterygii, Mugilidae) from Brazil
Provedor de dados: 42
Autores: PAHOR-FILHO,EDUARDO; KLOSTERHOFF,MARTA C.; MARCHIORI,NATALIA C.; PEREIRA JÚNIOR,JOABER.
ABSTRACT Monogenoidea pathogenic activity can elicit various histological responses in fish. Species of Ligophorus are specific parasites of mullets, and its relationship with host fish may result in a moderate pathogenic action. In order to ascertain this relationship, estuarine mullets (Mugil liza) were collected in an estuary, reared in laboratory, for three weeks, and forwarded for histological and parasitological analyses. Ligophorus uruguayense (Monogenoidea) infestation in the gills of the mullets was identified. The severe infestation by only one species of Monogenoidea may result from the specificity of these parasites to mullets. Mullets submitted to histological analysis exhibited respiratory epithelium detachment; mild, moderate and severe...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Histological changes; Monogenoidea; Mugilidae; Parasitosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602997

Poly(methylene blue)-modified electrode for indirect electrochemical sensing of OH radicals and radical scavengers
Provedor de dados: 42
Autores: BRAUN,WALTER A.; HORN,BRUNA C.; HOEHNE,LUCÉLIA; STÜLP,SIMONE; ROSA,MARCELO B. DA; HILGEMANN,MAURÍCIO.
ABSTRACT A new modified electrode for indirect sensing of OH· and radical scavengers was described. The electrochemical polymerization of methylene blue in aqueous solutions and the properties of the resulting films on a glassy carbon electrode were carried out using cyclic voltammetry. A surface coverage of 1.11 × 109mol cm2 was obtained, revealing a complete surface coverage of the polymeric film on the electrode surface. OH· was able to destroy the poly(methylene blue) film by exposure to a Fenton solution. The loss of the electrochemical signal of the residual polymeric film attached to the electrode surface was related to the extent of its dissolution. The applicability of the sensor was demonstrated by evaluating the OH radical scavenging effect on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electrochemical sensor; Fenton solution; Modified electrode; OH radical; Poly(methylene blue).
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401381

Autophagy protects against neural cell death induced by piperidine alkaloids present in Prosopis juliflora (Mesquite)
Provedor de dados: 42
Autores: SILVA,VICTOR D.A.; CUEVAS,CARLOS; MUÑOZ,PATRICIA; VILLA,MONICA; AHUMADA-CASTRO,ULISES; HUENCHUGUALA,SANDRO; SANTOS,CLEONICE C. DOS; ARAUJO,FILLIPE M. DE; FERREIRA,RAFAEL S; SILVA,VANESSA B. DA; SILVA,JULIANA H.C. E; SOARES,ÉRICA N.; VELOZO,EUDES S.; SEGURA-AGUILAR,JUAN; COSTA,SILVIA L.
ABSTRACT Prosopis juliflora is a shrub that has been used to feed animals and humans. However, a synergistic action of piperidine alkaloids has been suggested to be responsible for neurotoxic damage observed in animals. We investigated the involvement of programmed cell death (PCD) and autophagy on the mechanism of cell death induced by a total extract (TAE) of alkaloids and fraction (F32) from P. juliflora leaves composed majoritary of juliprosopine in a model of neuron/glial cell co-culture. We saw that TAE (30 µg/mL) and F32 (7.5 µg/mL) induced reduction in ATP levels and changes in mitochondrial membrane potential at 12 h exposure. Moreover, TAE and F32 induced caspase-9 activation, nuclear condensation and neuronal death at 16 h exposure. After 4 h,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Programmed cell death; Autophagy; Glial cells; Neurons; Piperidine alkaloids; Prosopis juliflora.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100247

Correlations of condition factor and gonadosomatic, hepatosomatic and lipo-somatic relations of Leptodactylus macrosternum (ANURA: Leptodactylidae) in the Brazilian Semi-arid
Provedor de dados: 42
Autores: CHAVES,MARCIO F.; TENÓRIO,FERNANDA C.M.A.; SANTOS,IGOR L.V.L.; J.C.L. NETO,CLOVIS; TEXEIRA,VALERIA W.; MOURA,GERALDO J.B.; TEXEIRA,ÁLVARO A.C.
ABSTRACT The objective of this study was to assess variations of the condition factor (K1) in relation to the gonadosomatic- RGS and energy reserves (hepatosomatic - RWL and liposomatic - RFB relations) of Leptodactylus macrosternum and their relationship to climate variation in the Northeast of Brazil, Caatinga area, state of Paraiba. The animals were captured fortnightly through active collecting, between January and December 2013. Significant differences were observed in the monthly variations of K1, RGS and RFB indices in male and female L. macrosternum over the months of collection. In males, K1 showed no significant relationship with the other variables. In females, RGS values only show notable correlations with RWF and K1 values. K1 values showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anurans; Fatty bodies; Northeast; Reproduction; Seasonality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401591

Water temperature, body mass and fasting heat production of pacu (Piaractus mesopotamicus)
Provedor de dados: 42
Autores: AGUILAR,FREDY A.A.; CRUZ,THALINE M.P. DA; MOURÃO,GERSON B.; CYRINO,JOSÉ EURICO P.
ABSTRACT Knowledge on fasting heat production (HEf) of fish is key to develop bioenergetics models thus improving feeding management of farmed species. The core of knowledge on HEf of farmed, neotropical fish is scarce. This study assessed the effect of body mass and water temperature on standard metabolism and fasting heat production of pacu, Piaractus mesopotamicus, an omnivore, Neotropical fresh water characin important for farming and fisheries industries all through South American continent. An automated, intermittent flow respirometry system was used to measure standard metabolic rate (SMR) of pacu (17 - 1,050 g) at five water temperatures: 19, 23, 26, 29 and 33 °C. Mass specific SMR increased with increasing water temperature but decreased as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric exponent; Bioenergetics models; Pacu; Respirometry; Standard metabolic rate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301305

S-(+)- and R-(-)-linalool: a comparison of the in vitro anti-Aeromonas hydrophila activity and anesthetic properties in fish
Provedor de dados: 42
Autores: SILVA,LENISE L.; BALCONI,LUANA S.; GRESSLER,LETÍCIA T.; GARLET,QUELEN I.; SUTILI,FERNANDO J.; VARGAS,AGUEDA P. C.; BALDISSEROTTO,BERNARDO; MOREL,ADEMIR F.; HEINZMANN,BERTA M.
ABSTRACT Linalool is the main compound of many essential oils and occurs in two isomeric forms: S-(+)- and R-(-)-linalool. This study aimed to determine if linalool isomers have different antimicrobial and anesthetic properties in fish. For this purpose, these compounds were previously isolated from Lippia alba (Mill.)N. E. Brown and Ocimum americanum L. essential oils. Antimicrobial effects were evaluated through the microdilution test against Aeromonas hydrophila, an important fish disease etiologic agent. Induction time until sedation, anesthesia and recovery time were determined in silver catfish (Rhamdia quelen) through bath exposure (60, 180, 300 or 500 μL L-1). The results showed different biological properties for the isomers being S-(+)-linalool...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anesthesia; Aeromonas hydrophila; Chirality; Linalool; Silver catfish.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100203

Biomarkers as predictors of mortality in critically ill patients with solid tumors
Provedor de dados: 42
Autores: REIS,AUDREY M. DOS; FRUCHTENICHT,ANA V.G.; ATHAYDES,LUIZA C. DE; LOSS,SÉRGIO; MOREIRA,LUIS FERNANDO.
ABSTRACT Biochemical markers produced by the affected organ or body in response to disease have gained high clinical value due to assess disease development and being excellent predictors of morbidity and mortality. The aim of this study is to analyze different biochemical markers in critically cancer patients and to determine which of them can be used as predictors of mortality. This is a prospective, cross-sectional study conducted at a University Hospital in Porto Alegre - RS. Screening was done to include patients in the study. Serum biochemical markers obtained in the first 24 hours of Intensive Care Unit hospitalization were analyzed. A second review of medical records occurred after three months objected to identify death or Unit discharged. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intensive care; Critically ill cancer patient; Intensive care mortality; Biochemical markers.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602921

Vitamin E and organic selenium for broilers from 22 to 42 days old: performance and carcass traits
Provedor de dados: 42
Autores: ALBUQUERQUE,DANIEL M.N.; LOPES,JOÃO B.; FERRAZ,MAÍRA S.; RIBEIRO,MABELL N.; SILVA,SANDRA R.G.; COSTA,ELVÂNIA M.S.; LIMA,DANIELA C.P.; FERREIRA,JEFFERSON D.M.; GOMES,PEDRO E.B.; LOPES,JACKELLINE C.O.
ABSTRACT This study was conducted to evaluate the effect of vitamin E and selenium on performance, viability, productive efficiency, and yields of carcass, major cuts, and organs of broilers from 22 to 42 days submitted to cyclic-heat stress. The experimental design was randomized blocks, in a 2 × 3 factorial arrangement with two levels of selenium (0.1 and 0.3 mg/kg) and three levels of vitamin E (300, 400, and 500 mg/kg), plus a control treatment. Animals were submitted to a natural condition of high cyclic temperature. Organic selenium levels of 0.1 and 0.3 mg/kg associated with 300, 400, and 500 mg/kg of vitamin E were tested. The level of vitamin E did not affect the performance or production efficiency of broilers in the period from 22 to 33 days and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Minerals; Nutrition; Poultry; Productive efficiency; Vitamins.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301259

Construction and characterization of a recombinant yellow fever virus stably expressing Gaussia luciferase
Provedor de dados: 42
Autores: KASSAR,TELISSA C.; MAGALHÃES,TEREZA; S. JÚNIOR,JOSÉ V.J.; CARVALHO,AMANDA G.O.; SILVA,ANDRÉA N.M.R. DA; QUEIROZ,SABRINA R.A.; BERTANI,GIOVANI R.; GIL,LAURA H.V.G.
ABSTRACT Yellow fever is an arthropod-borne viral disease that still poses high public health concerns, despite the availability of an effective vaccine. The development of recombinant viruses is of utmost importance for several types of studies, such as those aimed to dissect virus-host interactions and to search for novel antiviral strategies. Moreover, recombinant viruses expressing reporter genes may greatly facilitate these studies. Here, we report the construction of a recombinant yellow fever virus (YFV) expressing Gaussia luciferase (GLuc) (YFV-GLuc). We show, through RT-PCR, sequencing and measurement of GLuc activity, that stability of the heterologous gene was maintained after six passages. Furthermore, a direct association between GLuc...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gaussia luciferase; Homologous recombination in yeast; Reporter gene; Yellow fever virus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502119

Evaluation of cell proliferation and endometrial thickness of bitches in different periods of diestrus
Provedor de dados: 42
Autores: GOSSLER,VANESSA S.A.; SANTOS,FRANCISLAINE A.G.; AZEVEDO,ALINE R. DE; GONÇALVES,PRISCILA C.; RIGOLO,HUGO A.; TREVISAN,CLEONICE; MASSENO,ANA PAULA B.; CARDOSO,ANA PAULA M.M.; PAPA,PAULA C.; CASTILHO,CALIÊ; GIOMETTI,INES C.
ABSTRACT This study aimed to determine the histological features of the endometrium of bitches, as well as the cell proliferation at specific moments of diestrus, 10, 20, 30, 40, 50 and 60 days post ovulation, correlating the endometrial thickness with the uterine cell proliferation and the metabolic state (weight, blood glucose and plasma cholesterol) of the animals. Therefore, the right and left uterine horns of 26 clinically healthy bitches submitted to ovariohysterectomy were histologically analyzed 10, 20, 30, 40, 50 and 60 days post ovulation. The hematoxylin-eosin and AgNOR staining techniques were performed. All parameters were evaluated by ANOVA and post-hoc Tukey test (p&lt;0.05). The correlation between endometrial thickness and uterine cell...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AgNOR; Dogs; Hematoxylin-eosin; Uterus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401719

Detection, purification and characterization of a lectin from freshwater green algae Spirogyra spp.
Provedor de dados: 42
Autores: OLIVEIRA,ANTÔNIA S. DE; LÓSSIO,CLÁUDIA F.; RANGEL,ANNE J.; MARTINS,MARIA G.Q.; NASCIMENTO,FERNANDO E.P. DO; ANDRADE,MARIA L.L. DE; CAVADA,BENILDO S.; LACERDA,SÍRLEIS R.; NASCIMENTO,KYRIA S. DO.
ABSTRACT Freshwater algae are rich sources of structurally biologically active metabolites, such as fatty acids, steroids, carotenoids and polysaccharides. Among these metabolites, lectins stand out. Lectins are proteins or glycoproteins of non-immune origin which bind to carbohydrates or glycoconjugates, without changing ligand structure. Many studies have reported on the use of Spirogyra spp. as effective bioindicators of heavy metals; however, reports on Spirogyra molecular bioprospecting are quite limited. Therefore, this study aimed to detect, isolate, purify and characterize a lectin present in the freshwater green algae Spirogyra. Presence of the lectin protein in the extract was detected by hemagglutination assays. Subsequently, the protein extract...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algae; Characterization; Lectin; Purification.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502113

Landslides Zonation Hazard: relation between geological structures and landslides occurrence in hilly tropical regions of Brazil
Provedor de dados: 42
Autores: CERRI,RODRIGO I.; REIS,FÁBIO A.G.V.; GRAMANI,MARCELO F.; GIORDANO,LUCILIA C.; ZAINE,JOSÉ EDUARDO.
ABSTRACT This paper presents a new approach of landslides zonation hazard studies, based on an integrated study of structural data along with geomorphological and external factors, in a hilly regions of Brazil, covered by a tropical humid rain-forest, called Serra do Mar. The Serra do Mar consists of a hilly region along the east coast of Brazil, with high slopes and many geological structures in a gneiss - migmatitic terrain. In contrast to traditional approaches, this method proposes that structural data (foliation, fractures and bedding planes) and its relation with the slope geometry, is important to be consider in the landslide zonation hazard, along with declivity, relative relief, soil and rock properties, land use and vegetation cover and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caraguatatuba; Geological Structures; Landslides; Serra do Mar; Hazard Zonation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602609

The last dinosaurs of Brazil: The Bauru Group and its implications for the end-Cretaceous mass extinction
Provedor de dados: 42
Autores: BRUSATTE,STEPHEN L.; CANDEIRO,CARLOS R.A.; SIMBRAS,FELIPE M.
ABSTRACT The non-avian dinosaurs died out at the end of the Cretaceous, ~66 million years ago, after an asteroid impact. The prevailing hypothesis is that the effects of the impact suddenly killed the dinosaurs, but the poor fossil record of latest Cretaceous (Campanian-Maastrichtian) dinosaurs from outside Laurasia (and even more particularly, North America) makes it difficult to test specific extinction scenarios. Over the past few decades, a wealth of new discoveries from the Bauru Group of Brazil has revealed a unique window into the evolution of terminal Cretaceous dinosaurs from the southern continents. We review this record and demonstrate that there was a diversity of dinosaurs, of varying body sizes, diets, and ecological roles, that survived to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Cretaceous; Dinosaur; Gondwana; K-Pg boundary; Mass extinction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401465

The peculiar breeding biology of the Amazonian frog Allobates subfolionidificans (Aromobatidae)
Provedor de dados: 42
Autores: SOUZA,JESUS R.D.; KAEFER,IGOR L.; LIMA,ALBERTINA P.
ABSTRACT Allobates subfolionidificans is a vulnerable and endemic leaf-litter frog from the state of Acre, Brazilian Amazonia. We monitored a population of A. subfolionidificans through regular censuses and mark-recapture of 181 individuals during an entire breeding season to characterize its reproductive behavior. The space use of A. subfolionidificans individuals differed between sexes, with males using smaller and more segregated spaces. Males defended territories and were aggressive against same-sex individuals, which was not the case in females. The daily cycle of calling activity showed peaks in the morning and in the afternoon, and the occurrence of reproductive events was positively correlated with monthly rainfall. The breeding behavior comprised...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anura; Dendrobatidae; Ethology; Leaf-litter frog; Space use.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300885

Soluble amino acid profile, mineral nutrient and carbohydrate content of maize kernels harvested from plants submitted to ascorbic acid seed priming
Provedor de dados: 42
Autores: ALCÂNTARA,BERENICE K.; RIZZI,VANESSA; GAZIOLA,SALETE A.; AZEVEDO,RICARDO A.
ABSTRACT Both the scientific community and society have shown interest in improving the content of amino acids, carbohydrates and mineral nutrients in maize because it represents an important staple food in many developing countries. Earlier studies demonstrated that the treatment of seeds using ascorbic acid (AsA-seed priming) enhanced soluble carbohydrates, proteins and soluble amino acids for other species. AsA seed priming in maize showed the potential for reducing abiotic stresses. The effects on grain quality have not been previously demonstrated. This study investigated the impacts of AsA seed priming on maize kernel quality of seeds produced by the plants generated from the primed seeds, based on the amino acid profile and carbohydrate and mineral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitamin C; Grain quality; Boron; Sugar; Amino acids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200695

BEEF TALLOW AND EMULSIFIER IN GROWING-FINISHING PIG DIETS
Provedor de dados: 42
Autores: SANTOS,KASSIA M.; WATANABE,PEDRO H.; FREITAS,EDNARDO R.; NEPOMUCENO,RAFAEL C.; OLIVEIRA,PAULA J.D.; LIMA,VIRGÍNIA M.; RODRIGUES,BÁRBARA B.V.; NASCIMENTO,GERMANO A.J. DO; CARVALHO,LUIZ E. DE.
ABSTRACT Two trials were aimed to evaluate beef tallow in diets with and without emulsifier on performance of pigs at growing-finishing phases. In the first trial, 15 barrows (22.03±0.62 kg) were distributed among three treatments: reference diet; test diet 1 (5% beef tallow) and test diet 2 (10% beef tallow). Beef tallow presented average value of 7130.97 kcal ME/kg. For the performance trail, 30 barrows (24.85±1.18 kg) were distributed among five treatments: T1 - diet with soybean oil and 3230 kcal ME /kg; T2 - diet with beef tallow and 3230 kcal ME/kg; T3 - diet with beef tallow and 3080 kcal ME/kg; T4 - diet with beef tallow, 3080 kcal/kg and 0.1% emulsifier; T5 - diet with beef tallow, 2930 kcal ME/kg and 0.1% emulsifier. Feed conversion was worse in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal fat; Lipids; Soy lecithin; Triglycerides.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301221

Population dynamics of Siderastrea stellata Verrill, 1868 from Rocas Atoll, RN: implications for predicted climate change impacts at the only South Atlantic atoll
Provedor de dados: 42
Autores: PINHEIRO,BARBARA R.; PEREIRA,NATAN S.; AGOSTINHO,PAULA G.F.; MONTES,MANUEL J.F.
ABSTRACT Coral reefs are one of the most vulnerable ecosystems to ocean warming and acidification, and it is important to determine the role of reef building species in this environment in order to obtain insight into their susceptibility to expected impacts of global changes. Aspects of the life history of a coral population, such as reproduction, growth and size-frequency can contribute to the production of models that are used to estimate impacts and potential recovery of the population, acting as a powerful tool for the conservation and management of those ecosystems. Here, we present the first evidence of Siderastrea stellata planulation, its early growth, population size-frequency distribution and growth rate of adult colonies in Rocas Atoll. Our...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Coral reefs; Rocas Atoll; Siderastrea stellata; South Atlantic Ocean.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300873

Use of GC/MS to identify chemical constituents and cytotoxic activity of the leaves of Phoradendron mucronatum and Phoradendron microphyllum (Viscaceae)
Provedor de dados: 42
Autores: BASTOS,ISLA V.G.A.; OLIVEIRA,TATIANE B. DE; RODRIGUES,MARIA D.; MILITÃO,GARDÊNIA C.G.; SILVA,TERESINHA G. DA; TURATTI,IZABEL C.C.; LOPES,NORBERTO P.; MELO,SEBASTIÃO J. DE.
ABSTRACT Phoradendron mucronatum and P. microphyllum are plants that found in tropical and subtropical areas, used in traditional medicine and popularly known as mistle-thrush. The aim of this study was to identify the chemical constituents of different leaf extracts from P. mucronatum and P. microphyllum and assess cytotoxic activity against strains from a human tumour cells. Extracts obtained with hexane, dichloromethane, chloroform and ethyl acetate from the leaves were analysed by gas chromatography coupled with mass spectrometry (GC-MS) and the cytotoxicity was assessed by the MTT method (bromide (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide)). The tested human tumour cells were NCI-H292 (human pulmonar mucoepidermoid carcinoma), MCF-7...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytotoxicity; Gas Chromatography; Phoradendron microphyllum; Phoradendron mucronatum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300991

Morphophysiological and biochemical alterations in Ricinus communis L. seeds submitted to cobalt60 gamma radiation
Provedor de dados: 42
Autores: LOPES,AMANDA M.; BOBROWSKI,VERA L.; SILVA,SERGIO D. DOS ANJOS E; DEUNER,SIDNEI.
ABSTRACT This study aimed to evaluate the radiosensitivity of castor bean seeds after applications of different doses of Cobalt60 gamma radiation. Seeds were pre-soaked for 24 hours in distilled water and then irradiated with 50, 100, 150, and 200 Gy, except the control. Sowing was performed in trays, which contained soil as substrate and were maintained in a greenhouse. The electrical conductivity, emergence, emergence speed index, growth parameters and activities of antioxidant enzymes (superoxide dismutase, ascorbate peroxidase, and catalase) were evaluated in the leaves and roots of castor bean seedlings. Gamma radiation did not affect the electrical conductivity of the seeds; however, at a dose of 200 Gy, the emergence and emergence speed index of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Castor bean; Radiosensitivity; Germination; Growth; Antioxidant enzymes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401925

Activity of Brazilian propolis against Aeromonas hydrophila and its effect on Nile tilapia growth, hematological and non-specific immune response under bacterial infection
Provedor de dados: 42
Autores: ORSI,RICARDO O.; SANTOS,VIVIAN G. DOS; PEZZATO,LUIZ E.; CARVALHO,PEDRO L.P.F. DE; TEIXEIRA,CAROLINE P.; FREITAS,JAKELINE M.A.; PADOVANI,CARLOS R.; SARTORI,MARIA M.P.; BARROS,MARGARIDA M.
ABSTRACT The effect of the ethanolic extract of propolis (EEP) on Aeromonas hydrophila was analyzed by determination of minimum inhibitory concentration (MIC). Then, the effects of crude propolis powder (CPP) on growth, hemato-immune parameters of the Nile tilapia, as well as its effects on resistance to A. hydrophila challenge were investigated. The CPP (0.5, 1.0, 1.5, 2.0, 2.5 and 3.0%) was added to the diet of 280 Nile tilapia (50.0 ± 5.7 g fish-1). Hemato-immune parameters were analyzed before and after the bacterial challenge. Red blood cell, hematocrit, hemoglobin, mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC), and hydrogen peroxide (H2O2) and nitric oxide (NO) were evaluated. The MIC of the EEP was 13% (v/v) with a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Health; Hematology; Immunology; Oreochromis niloticus; Propolis; Stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401785

Avian Communities in the Amazonian Cangas Vegetation: Biogeographic Affinities, Components of Beta-Diversity and Conservation
Provedor de dados: 42
Autores: BORGES,SÉRGIO H.; SANTOS,MARCOS P.D.; SOARES,LEONARDO M.S.; SILVA,ANTONITA S. DA.
ABSTRACT The Amazonian cangas is a vegetation type distributed as patches of open vegetation embedded in a matrix of tropical forest and that grows over iron-rich soils in the Serra dos Carajás region. To characterize cangas avifauna, we surveyed birds in eight patches varying from 43 to 1,366 hectares. Cangas avifauna has compositional affinities with savannas widespread throughout the Amazon and other biomes, and we estimate that more than 200 bird species occurs in this habitat. Species composition was relatively homogeneous, and the similarity among cangas patches was the dominant component of the beta-diversity. Bird communities in cangas patches exhibited statistically significant nested structure in respect to species richness and patch size. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian habitats; Insular habitats; Iron mines; Neotropical birds; Rock outcrops.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502167

Evaluation of phenolic compounds and lipid-lowering effect of Morus nigra leaves extract
Provedor de dados: 42
Autores: ZENI,ANA LÚCIA B.; MOREIRA,TATIANNE D.; DALMAGRO,ANA PAULA; CAMARGO,ANDERSON; BINI,LARISSA A.; SIMIONATTO,EDÉSIO L.; SCHARF,DILAMARA R.
ABSTRACT Morus nigra L. (Moraceae) is a tree known as black mulberry and the leaves are used in folk medicine in the treatment of diabetes, high cholesterol and menopause symptoms. The aim of this study was to evaluate the M. nigra leaves phytochemical profile in different extractions and the hypolipidemic effect of the infusion comparing to the fenofibrate. Morus nigra infusion (MN) showed higher amounts of phenolics and flavonoids (83.85 mg/g and 79.96 µg/g, respectively), as well as antioxidant activity (83.85%) than decoction or hydromethanolic extracts. Although, decoction showed the best result for ascorbic acid (4.35 mg/100 g) than hydromethanolic or infusion (2.51 or 2.13 mg/100 g, respectively). The phenolic acids gallic, chlorogenic and caffeic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morus nigra; Leaves; Phenolics; Triton WR-1339.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602805

Assessment of cow and farm level risk factors associated with Ureaplasma diversum in pasture-based dairy systems - A field study
Provedor de dados: 42
Autores: NASCIMENTO-ROCHA,JOSEFA M.; OLIVEIRA FILHO,BENEDITO D. DE; ARNHOLD,EMANNUEL; PÔRTO,REGIANI N.G.; LIMA,SVETLANA F.; GAMBARINI,MARIA LUCIA.
ABSTRACT Potential risk factors for Ureaplasma diversum in the vaginal mucus of 1,238 dairy cows were included in a multivariate logistic regression model, based on the cow level (i.e., granular vulvovaginitis [+GVV], yearly milk production [4500 kg or more], pregnancy, predominance of Bos taurus [+Bos Taurus], score of corporal condition [at least 2.5], concomitant positivity for Escherichia coli [+E.coli]), and farm level i.e., milking room hygiene (-Milking room), dunghill location, and replacement female). Ureaplasma diversum was present in 41.1% of the samples. Independent risk factors for U. diversum were +GVV (odds ratio [OR], 1.31); +Mycoplasma spp (OR, 5.67); yearly milk production (4500 kg or more) (OR, 1.99); +Bos taurus (OR, 1.68); +E. coli...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dairy cow; Exposure factors; Genital ureaplasmosis; Mollicutes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401779

Antibiotic activity of Plectranthus ornatus Codd., a Traditional Medicinal Plant
Provedor de dados: 42
Autores: NASCIMENTO,FERNANDA R.; ALBUQUERQUE,KAMYLLA R.S.; OLIVEIRA,MARCOS R.; PIZZIOLO,VIRGINIA R.; BRASILEIRO,BEATRIZ G.; DIAZ,GASPAR; DIAZ,MARISA A.N.
ABSTRACT The dichloromethane extract of Plectranthus ornatus Codd., a tradicional medicinal plant, showed antibiotic activity with minimum inhibitory concentration (MIC) values of 0.4 mg.mL-1 and 100 percent of biofilm inhibition against Staphylococcus aureus strains isolated from animals with mastitis infections. Based on these antibacterial activities, in addition to ethnopharmacological reports from healing men and farmers in Brazil, an herbal soap was produced from this active extract and was tested both in vitro and in vivo. In vivo assays conducted on these herbal soaps led to results similar to those previously conducted with the active extract. These results indicated the great potential of this plant for use as an excipient by preparing herbal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine mastitis; Herbal soaps; Plectranthus ornatus; Staphylococcus aureus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502461

Photosynthetic capacity and water use efficiency in Ricinus communis (L.) under drought stress in semi-humid and semi-arid areas
Provedor de dados: 42
Autores: SANTOS,CLAUDIANA M. DOS; ENDRES,LAURÍCIO; FERREIRA,VILMA M.; SILVA,JOSÉ V.; ROLIM,EDUARDO V.; WANDERLEY FILHO,HUMBERTO C.L.
ABSTRACT Castor bean is one of the crops with potential to provide raw material for production of oils for biodiesel. This species possess adaptive mechanisms for maintaining the water status when subjected to drought stress. A better understanding these mechanisms under field conditions can unravel the survival strategies used by this species. This study aimed to compare the physiological adaptations of Ricinus communis (L.) in two regions with different climates, the semi-arid and semi-humid subject to water stress. The plants showed greater vapor pressure deficit during the driest hours of the day, which contributed to higher values of the leaf temperature and leaf transpiration, however, the VPD(leaf-air) had the greatest effect on plants in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ricinus communis L.; Water deficit; Stomatal control; Photoinhibition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603015

Transcolonic Perirectal NOTES Access (PNA): A feasibility study with survival in swine model
Provedor de dados: 42
Autores: OLIVEIRA,ANDRÉ L.A.; ZORRON,RICARDO; OLIVEIRA,FLAVIO M.M. DE; SANTOS JUNIOR,MARCELO B. DOS; SCHEFFER,JUSSARA P.; RIOS,MARCELO; ANTUNES,FERNANDA.
ABSTRACT Transrectal access still has some unsolved issues such as spatial orientation, infection, access and site closure. This study presents a simple technique to perform transcolonic access with survival in a swine model series. A new technique for NOTES perirectal access to perform retroperitoneoscopy, peritoneoscopy, liver and lymphnode biopsies was performed in 6 pigs, using Totally NOTES technique. The specimens were extracted transanally. The flexible endoscope was inserted through a posterior transmural incision and the retrorectal space. Cultures of bacteria were documented for the retroperitoneal space and intra abdominal cavity after 14 days. Rectal site was closed using non-absorbable sutures. There was no bowel cleansing, nor preoperative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rectal cancer; Total mesorectal excision; Colorectal surgery; Natural orifice surgery; Minimally invasive surgery.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200685

Leaf area estimation of cassava from linear dimensions
Provedor de dados: 42
Autores: ZANETTI,SAMARA; PEREIRA,LAÍS F.M.; SARTORI,MARIA MÁRCIA P.; SILVA,MARCELO A.
ABSTRACT The objective of this study was to determine predictor models of leaf area of ​​cassava from linear leaf measurements. The experiment was carried out in greenhouse in the municipality of Botucatu, São Paulo state, Brazil. The stem cuttings with 5-7 nodes of the cultivar IAC 576-70 were planted in boxes filled with about 320 liters of soil, keeping soil moisture at field capacity, monitored by puncturing tensiometers. At 80 days after planting, 140 leaves were randomly collected from the top, middle third and base of cassava plants. We evaluated the length and width of the central lobe of leaves, number of lobes and leaf area. The measurements of leaf areas were correlated with the length and width of the central lobe and the number of lobes of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta Crantz; Leaf biometrics; Statistical models; Multiple regression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401729

Growth of the silverside Atherinella brasiliensis in a subtropical estuary with some insights concerning the weight-length relationship
Provedor de dados: 42
Autores: CARVALHO,BARBARA M. DE; BARRADAS,JOSÉ RICARDO S.; FONTOURA,NELSON F.; SPACH,HENRY L.
ABSTRACT Specimens of Brazilian silverside (Atherinella brasiliensis, n=9672) with a length range of 1.5 to 14.2 cm were captured in the intertidal areas of the Estuarine Complex of Paranaguá, Brazil, between August 2010 and July 2011. The species’ weight-length relationship was represented by the equation W=0.00533 L3.136 with a slightly positive allometry (b&gt;3) and could be divided into two growth stanzas: W = W1 + W2; Stanza 1: W1= SW. (0.005239 L3.152); Stanza 2: W2= (1 - SW). (0.000699 L3.913); Switch-Function: SW = [1 + e1.204 (L - 11.66)]-1. The breakpoint between the first and second stanza (11.66 cm) matches published values for the estimated size at first maturity of adult females. Frequency distributions indicate that the species is present...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atherinopsidae; Longevity; Von Bertalanffy; Weight-length relationship.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502261

Copper II - polar amino acid complexes: toxicity to bacteria and larvae of Aedes aegypti
Provedor de dados: 42
Autores: RODRIGUES,THIAGO A.D.; ARRUDA,EDUARDO J. DE; FERNANDES,MAGDA F.; CARVALHO,CLAUDIO T. DE; LIMA,ALESSANDRA R.; CABRINI,ISAÍAS.
ABSTRACT Control strategies using insecticides are sometimes ineffective due to the resistance of the insect vectors.In this scenario new products must be proposed for the control of insect vectors.The complexes L-aspartate Cu (II) and L-glutamate-Cu (II) complexes were synthesized and characterized by elemental analysis, visible ultraviolet, infrared spectroscopy and potentiometric titration. The toxicity of these complexes was analyzed in Aedes aegypti (Diptera: Culicidae) larvae and Gram-negative and Gram-positive bacteria. The interaction between the ligands and the amino acid balance and the distribution of the species as a function of pH were discussed. The lethal concentration median (LC50) for Ae. aegypti larvae were: L-glutamic acid-Cu (II) -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neurotransmitter; Bacteria; Population control of vectors; Metal-insecticide; Mosquito.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502273

Artificial diet for laboratory rearing of Condylorrhiza vestigialis (Guenée, 1854) (Lep.: Crambidae)
Provedor de dados: 42
Autores: CAMPOS,LUCAS S.; COELHO JR,ALOISIO; PARRA,JOSÉ ROBERTO P.
ABSTRACT The Brazilian Poplar Moth, Condylorrhiza vestigialis (Guenée), compromises the wood productivity of poplar trees (Populus sp.), mainly affecting the matchstick industry in southern Brazil. Considering the lack of information on rearing techniques for this insect, the objective of this study was to develop an artificial diet to rear C. vestigialis with biological characteristics similar to the wild insects. A properly diet will enable bio-ecological studies and biological control programs using the baculovirus Condylorrhiza vestigialis multiple nucleopolyhedrovirus (CvMNPV). To attain this objective, first, three artificial diets were tested. Only the diet based on corn, wheat germ and yeast as a protein source (Diet 3) was able to supply the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IPM; Biological control; Forest entomology; Baculovirus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100333

A new species of Tereancistrum (Monogenea, Dactylogyridae) from the gills of three Leporinus species (Characiformes, Anostomidae) and a revised description of Tereancistrum parvus
Provedor de dados: 42
Autores: ZAGO,ALINE C.; YAMADA,FÁBIO H.; FRANCESCHINI,LIDIANE; BONGIOVANI,MARCELA F.; YAMADA,PRISCILLA O.F.; SILVA,REINALDO J. DA.
ABSTRACT The present study describes Tereancistrum flabellum n. sp. (Dactylogyridae, Ancyrocephalinae) from the gills of the anostomid fishes Leporinus friderici, Leporinus amblyrhynchus and Leporinus elongatus from two freshwater ecosystems in the south east of Brazil. This new species is mainly characterized by the morphology of the copulatory complex (such as the MCO base formed by two fan-shaped structures, and accessory piece flattened, curved, rigid and channeled), a dorsal anchor with a well-developed superficial and inconspicuous deep root, and the shape of the accessory anchor sclerite with small spathulate termination. Tereancistrum flabellum n. sp. is the first record of a dactylogyrid from L. amblyrhynchus. The description of Tereancistrum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ancyrocephalinae; Anostomid fish; Gill ectoparasites; Monogeneans; Neotropical region.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301121

Assessment of the antiproliferative and antigenotoxic activity and phytochemical screening of aqueous extracts of Sambucus australis Cham. &amp;amp; Schltdl. (ADOXACEAE)
Provedor de dados: 42
Autores: TEDESCO,MARÍLIA; KUHN,ANDRIELLE W.; FRESCURA,VIVIANE DAL-SOUTO; BOLIGON,ALINE A.; ATHAYDE,MARGARETH L.; TEDESCO,SOLANGE B.; SILVA,ANTONIO C.F. DA.
ABSTRACT The purpose of this study was to evaluate the antiproliferative and antigenotoxic activity of Sambucus australis Cham. &amp; Schltdl. aqueous extracts on the cell cycle of Allium cepa L. as well as determine the phenolic compounds in such extracts. S. australis inflorescences and leaves of two accessions were used for aqueous extract preparation at concentrations: 0.003 g/ml and 0.012 g/ml. A. cepa bulbs were rooted in distilled water and, subsequently, placed in treatments for 24 hours. Rootlets were collected and fixed in modified Carnoy’s solution for 24 hours and kept. The squash technique was performed for slide preparation. Root tips were smashed and stained with 2% acetic orcein, and a total of 4000 cells per treatment were analyzed. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medicinal plants; Mitotic index; Allium cepa; Sabugueiro; High-performance liquid chromatography.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502141

The influence of non-steroidal anti-inflammatory drugs and paracetamol used for pain control of orthodontic tooth movement: a systematic review
Provedor de dados: 42
Autores: CORRÊA,ADRIANO S.; ALMEIDA,VINÍCIUS L. DE; LOPES,BEATRIZ M.V.; FRANCO,ADEMIR; MATOS,FELIPE R. DE; QUINTANS-JÚNIOR,LUCINDO J.; RODE,SIGMAR M.; PARANHOS,LUIZ R.
ABSTRACT The present study aimed to perform a systematic literature review to determine if there is a non-steroidal anti-inflammatory drug (NSAID) that interferes less within tooth movement. This research was performed according to the PRISMA statement. Articles were searched in eight electronic databases (PubMed, Scopus, Embase, Web of Science, LILACS, SciELO, Google Scholar, and Open Grey). Only experimental studies on male Wistar rats were selected, which included experiments related to the influence of NSAIDs on orthodontic movement. Studies in animals with pathological conditions, literature review articles, letters to the editor and/or editorials, case reports, abstracts, books, and book chapters were excluded. Each of the steps of this systematic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anti-inflammatory; Drug; Orthodontics; Non-steroidal; Tooth movement.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602851

Comparative toxicity of essential oil and blends of selected terpenes of Ocotea species from Pernambuco, Brazil, against Tetranychus urticae Koch
Provedor de dados: 42
Autores: MORAES,MARCILIO M. DE; CAMARA,CLAUDIO A.G. DA; SILVA,MILENA M.C. DA.
ABSTRACT Essential oils from the leaves of two species of the genus Ocotea that occur in the Atlantic Forest in the state of Pernambuco, Brazil, were analyzed using gas chromatography-mass spectrometry. The acaricidal activity of these oils as well as 11 selected components and blends were evaluated in fumigation and residual contact tests against the two-spotted spider mite (Tetranychus urticae). Sixty-seven constituents were identified, totaling 97.3 ± 0.3% and 97.8 ± 0.5% of the oils from O. duckei and O. glomerata, respectively. Sesquiterpene was the dominant class. The compounds β-caryophyllene (18.6 ± 0.1%) and aromadendrene (17.3 ± 0.6%) were the main constituents of the oils from O. duckei and O. glomerata, respectively. Acaricidal action varied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acaricidal activity; Β-caryophyllene; Essential oil; Ocotea; Tetranychus urticae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401417

Periodic complex map germs and foliations
Provedor de dados: 42
Autores: CÂMARA,LEONARDO M.; SCÁRDUA,BRUNO A.
Abstract In this paper we study topological and analytical conditions on the orbits of a germ of diffeomorphism in the complex plane in order to obtain periodicity. In particular, we give a simple proof of a finiteness criteria for groups of analytic diffeomorphisms, stated in Brochero Martínez 2003. As an application, we derive some consequences about the integrability of complex vector fields in dimension three in a neighborhood of a singular point.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Complex germs of diffeomorphims; Singular holomorphic foliations; Integrability of vector fields; Closed orbits.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602563

Mentha pulegium crude extracts induce thiol oxidation and potentiate hemolysis when associated to t-butyl hydroperoxide in human’s erythrocytes
Provedor de dados: 42
Autores: BIANCHINI,MATHEUS C.; GALVÃO,DENNYURA O.; TAMBORENA,TATIANA; ALVES,CLAUDIA O.; PUNTEL,ROBSON L.
ABSTRACT Mentha pulegium (Lamiaceae) tea has been used as a traditional medicine; however, the modulatory effect of M. pulegium extracts on damage to human erythrocytes associated to t-butyl hydroperoxide (t-BHP) exposure remains to be investigated. Accordingly, we perform this study in order to test the hypothesis that aqueous and ethanolic extracts of M. pulegium could modulate the hemolysis associated to t-BHP exposure, non-protein thiol (NPSH) oxidation and lipid peroxidation (measured as thiobarbituric acid reactive substances - TBARS) in human erythrocytes. Samples were co-incubated with t-BHP (4 mmol/L) and/or aqueous or ethanolic extracts (10-1000 mg/mL) during 120 min to further analysis. We found that both extracts, when associated to t-BHP,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mentha pulegium; Lamiaceae; Hemolysis; Lipid peroxidation; NPSH oxidation; Erythrocytes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602901

The quantification of testicular cells during the postnatal development in two Caviomorph rodents: the guinea pig (Cavia porcellus) and the cutia (Dasyprocta agouti)
Provedor de dados: 42
Autores: SIMÕES,LUCIANA S.; SASAHARA,TAIS H.C.; FAVARON,PHELIPE O.; MARQUES JÚNIOR,RICARDO; OLIVEIRA,MOACIR F. DE; MACHADO,MÁRCIA R.F.; MIGLINO,MARIA ANGELICA.
ABSTRACT The germinative, Sertoli and Leydig cells of two caviomorph rodents (Cavia porcellus and Dasyprocta agouti) were counted as well as the estimation of the total volume of the testis and the total volume of seminiferous tubules and interstitium in prepubertal, pubertal and adult animals. The number of spermatogonia, spermatocytes and spermatids cells increased during the pubertal phase in both rodents, notably the spermatid cells. The spermatocyte and spermatid slightly decreased in the adult of both rodents, but the increment in spermatogonia cells number was seen, mainly in cutias. The number of Sertoli cells increased in pubertal rodents, but in the adult the number reduced. Substantial number of Leydig cells was counted in pubertal and adult...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germinative cells; Hystricomorpha; Reproduction; Stereology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401745

Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeografic Province that produce monolete spores and its systematic implications (I): Blotiella lindeniana , Histiopteris incisa and Paesia glandulosa
Provedor de dados: 42
Autores: YAÑEZ,AGUSTINA; MARQUEZ,GONZALO J.; MORBELLI,MARTA A.
ABSTRACT The genera of Dennstaedtiaceae have sporophytes with very different morphological characteristics between each other, and this feature has made difficult the systematic circumscription of the family. This reason makes necessary the study of new characters that allow a better understanding of the relations within the group. The spore morphology and wall structure of Blotiella lindeniana, Histiopteris incisa and Paesia glandulosa from the Paranaense Phytogeographic Province were studied using light microscope, and scanning and transmission electron microscope. The exospore has two layers and, according to the species, the exospore surface bears pila, echinae, verrucae, bacula and tubercles. The perispore has two or three layers and its surface is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ferns; Morphology; South America; Sporoderm; Ultrastructure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602731

Effects of nutritional conditions on lipid production by cyanobacteria
Provedor de dados: 42
Autores: CORDEIRO,RAQUEL S.; VAZ,IZABELA C.D.; MAGALHÃES,SÉRGIA M.S.; BARBOSA,FRANCISCO A.R.
ABSTRACT The present study evaluated the effects of the culturing media and the levels of nitrogen and phosphorus on the growth, biomass productivity and lipid production of four species of Microcystis (M. novacekii, M. aeruginosa, M panniformis and M. protocystis). The lipid extract was obtained by refluxing with dichloromethane (Soxhlet). The biomass and biomass productivity yields were maximized with ASM-1 medium treatment enriched with nitrogen and/or phosphorus (0.25-0.65 g/L and 25-50.7 mg/L d-1, respectively). The lipid extract yields from M. panniformis and M. novacekii were inversely correlated with the concentration of nitrogen and directly correlated with the concentration of phosphorus (35.8 % and 31.7 %). The lipid extract yield from M....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Culture media; Lipid extraction; Microcystis; Nitrogen and phosphorus deprivation and Stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502021

Sodium reduction in margarine using NaCl substitutes
Provedor de dados: 42
Autores: GONÇALVES,CARLA; RODRIGUES,JÉSSICA; JÚNIOR,HERALDO; CARNEIRO,JOÃO; FREIRE,TASSYANA; FREIRE,LUÍSA.
ABSTRACT Sodium chloride is traditionally used as a food additive in food processing. However, because of its high sodium content, NaCl has been associated with chronic diseases. Margarine is a popular product that is used in several preparations, but it includes high sodium content; therefore, it is among the products whose sodium content should be reduced. Thus, the objective of this study was to produce margarines with reduced sodium content prepared using a salt mixture. The following 4 margarine formulations were prepared: Formulation A (control - 0% sodium reduction), Formulation B (20.8% less sodium), Formulation C (33.0% less sodium) and Formulation D (47.4% less sodium). The low sodium formulations were produced using a salt mixture consisting of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acceptance; KCl; Monosodium glutamate; TDS; TI.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502505

Molecular survey of Anaplasma platys and Ehrlichia canis in dogs from Campo Grande, Mato Grosso do Sul, Brazil
Provedor de dados: 42
Autores: SOARES,RODRIGO; RAMOS,CARLOS ALBERTO; PEDROSO,THATIANNA; BABO-TERRA,VERÔNICA; CLEVELAND,HERBERT; ARAÚJO,FLÁBIO DE.
ABSTRACT This study investigated the frequency of infection by Anaplasma platys and Ehrlichia canis in dogs submitted to animal health centers in Campo Grande, state of Mato Grosso do Sul, Brazil. E. canis and A. platys showed infection frequencies of 55.75% and 16.96%, respectively. The identity of the two species was confirmed by DNA sequencing.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epidemiology; NPCR; DNA; Midwestern Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100301

Partitioning of the diffuse attenuation coefficient for photosynthetically available irradiance in a deep dendritic tropical lake
Provedor de dados: 42
Autores: BRANDÃO,LUCIANA P.M.; BRIGHENTI,LUDMILA S.; STAEHR,PETER A.; BARBOSA,FRANCISCO A.R.; BEZERRA-NETO,JOSÉ F.
ABSTRACT We studied the effects of particulate and dissolved optically active components on the attenuation of photosynthetic active radiation (PAR) in a tropical lake. The temporal and spatial distribution of tripton, Chl-a and aCDOM(440) and their relative contribution to the diffuse PAR attenuation coefficient (Kd) was investigated at 21 sites (dry and wet seasons and two intermediate periods) and at monthly interval at 1 pelagic site. Higher values of ​​ Kd were observed during the mixing period, characterized by a higher concentration of tripton and Chl-a compared to the stratified rainy season. In the spatial sampling PAR attenuation was dominated by tripton absorption/scattering (average relative contribution of 79%), followed by Chl-a (average...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CDOM; Chlorophyll-a; Kd partition; Light attenuation; Tripton.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200469

Pollen morphology and viability in Bromeliaceae
Provedor de dados: 42
Autores: SOUZA,EVERTON H.; SOUZA,FERNANDA V.D.; ROSSI,MÔNICA L.; PACKER,RENAN M.; CRUZ-BARROS,MARIA AMELIA V.; MARTINELLI,ADRIANA P.
ABSTRACT Pollen morphology characterization is important in taxonomy, conservation and plant breeding, and pollen viability studies can support breeding programs. This study investigated pollen morphology and male fertility in 18 species of Bromeliaceae with ornamental potential. For morphological characterization, pollen grains were acetolyzed and characterization of exine was done using scanning and transmission electron microscopy. Pollen viability was investigated by in vitro germination and histochemical tests. Species belonging to Aechmea and Ananas genera presented medium size pollen, except for Ae. fasciata, with large pollen. Al. nahoumii, P. sagenarius and the Vriesea species analyzed showed large pollen, except for V. carinata, with very large...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aechmea; Alcantarea; Ananas; In vitro pollen germination; Histochemical test; Vriesea.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603067

Perception, knowledge and attitudes of Brazilian orthodontists on the treatment of Class II malocclusions
Provedor de dados: 42
Autores: KAIEDA,ARMANDO K.; LIMA,IGOR F.P.; SCANAVINI,MARCO ANTÔNIO; COQUEIRO,RAILDO S.; PITHON,MATHEUS M.; RODE,SIGMAR M.; PARANHOS,LUIZ RENATO.
ABSTRACT The present study aimed to assess the perception and knowledge of Brazilian orthodontists on the ideal moment to treat Class II malocclusions. Questionnaires with open, semi-open and close questions were sent by e-mail to 1653 Brazilian orthodontists. These orthodontists were registered in the Brazilian Association of Orthodontics and Dentofacial Orthopedics (ABOR). One-hundred and three (9.86%) Orthodontists replied to the questionnaires. Most of them were males (60.5%) with specialization as the highest level of professional qualification (59.9%). Most of the orthodontists (51%) reported preference for treating Class II malocclusions in late mixed dentition, followed by the early mixed dentition (29%). The age range between 10 and 12 years old...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orthodontic appliances; Attitudes; Diagnosis; Class II malocclusion.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602875

Entropy Generation Minimization Analysis of Active Magnetic Regenerators
Provedor de dados: 42
Autores: TREVIZOLI,PAULO V.; BARBOSA JR,JADER R.
Abstract A performance assessment of active magnetocaloric regenerators using entropy generation minimization is presented. The model consists of the Brinkman-Forchheimer equation to describe the fluid flow and coupled energy equations for the fluid and solid phases. Entropy generation contributions due to axial heat conduction, fluid friction and interstitial heat transfer are considered. Based on the velocity and temperature profiles, local rates of entropy generation per unit volume were integrated to give the cycle-average entropy generation in the regenerator, which is the objective function of the optimization procedure. The solid matrix is a bed of gadolinium spherical particles and the working fluid is water. Performance evaluation criteria of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Active Magnetic Regenerator (AMR); Magnetic refrigeration; Performance Evaluation Criteria (PEC); Entropy generation minimization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200717

Ostracoda and foraminifera from Paleocene (Olinda well), Paraíba Basin, Brazilian Northeast
Provedor de dados: 42
Autores: PIOVESAN,ENELISE K.; MELO,ROBBYSON M.; LOPES,FERNANDO M.; FAUTH,GERSON; COSTA,DENIZE S.
ABSTRACT Paleocene ostracods and planktonic foraminifera from the Maria Farinha Formation, Paraíba Basin, are herein presented. Eleven ostracod species were identified in the genera Cytherella Jones, Cytherelloidea Alexander, Eocytheropteron Alexander, Semicytherura Wagner, Paracosta Siddiqui, Buntonia Howe, Soudanella Apostolescu, Leguminocythereis Howe and, probably, Pataviella Liebau. The planktonic foraminifera are represented by the genera Guembelitria Cushman, Parvularugoglobigerina Hofker, Woodringina Loeblich and Tappan, Heterohelix Ehrenberg, Zeauvigerina Finlay, Muricohedbergella Huber and Leckie, and Praemurica Olsson, Hemleben, Berggren and Liu. The ostracods and foraminifera analyzed indicate an inner shelf paleoenvironment for the studied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Ostracods; Paleocene; Paraíba Basin; Foraminifera.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401443

Applicability of geomechanical classifications for estimation of strength properties in Brazilian rock masses
Provedor de dados: 42
Autores: SANTOS,TATIANA B.; LANA,MILENE S.; SANTOS,ALLAN E.M.; SILVEIRA,LARISSA R.C.
ABSTRACT Many authors have been proposed several correlation equations between geomechanical classifications and strength parameters. However, these correlation equations have been based in rock masses with different characteristics when compared to Brazilian rock masses. This paper aims to study the applicability of the geomechanical classifications to obtain strength parameters of three Brazilian rock masses. Four classification systems have been used; the Rock Mass Rating (RMR), the Rock Mass Quality (Q), the Geological Strength Index (GSI) and the Rock Mass Index (RMi). A strong rock mass and two soft rock masses with different degrees of weathering located in the cities of Ouro Preto and Mariana, Brazil; were selected for the study. Correlation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geomechanical classifications; Rock slopes; Stability analyses; Strength properties of rock masses.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300859

Exogenous enzyme complex prevents intestinal soybean meal-induced enteritis in Mugil liza (Valenciennes, 1836) juvenile.
Provedor de dados: 42
Autores: RAMOS,LEONARDO R.V.; PEDROSA,VIRGÍNIA F.; MORI,AGNES; ANDRADE,CARLOS F.F. DE; ROMANO,LUIS A.; ABREU,PAULO C.; TESSER,MARCELO B.
ABSTRACT Four soybean meal-based diets containing increasing levels of an enzyme complex (E50, E100, E150 and E200 at 50, 100, 150 and 200 g ton-1, respectively) and one soybean meal-based diet without the enzyme complex (E0) were fed in triplicate to M. liza juveniles in a semi-static flow system with 20 fish per tank for 75 days. There were no differences between the treatments for animal performance parameters, but fish fed the enzyme complex treatment exhibited significantly (P&lt;0.05) higher values of calcium bone retention compared with control fish. Although there was no relationship between bacterial counts in different sections of the gastrointestinal tract or enzyme levels, filamentous bacteria were increased in E50 compared with E150. All of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbohydrase; Growth; Histology; Microorganisms; Mullet; Phytase.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100341

Diversity and distribution of epiphytic bromeliads in a Brazilian subtropical mangrove
Provedor de dados: 42
Autores: SOUSA,MARIANA M. DE; COLPO,KARINE D.
ABSTRACT It is not unusual to find epiphytic bromeliads in mangroves, but most studies on mangrove vegetation do not record their presence. This study aimed to evaluate the diversity and distribution of epiphytic bromeliads in a subtropical mangrove. The richness, abundance and life form (atmospheric and tank) of bromeliads were recorded and compared among host tree species and waterline proximity. The effects of diameter and height of host trees on the abundance of bromeliads were also assessed. The mangrove was composed of Avicennia schaueriana, Laguncularia racemosa and Rhizophora mangle. We recorded seven bromeliad species of the genera Tillandsia and Vriesea. The waterline proximity did not affect the abundance or diversity of bromeliads, but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromeliaceae; Bromeliad-host relationship; Species richness; Waterline distance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301085

Abundance of the reef-building Petaloconchus varians (Gastropoda: Vermetidae) on intertidal rocky shores at Ilha Grande Bay, southeastern Brazil
Provedor de dados: 42
Autores: BREVES,ANDRÉ; SZÉCHY,MARIA TERESA M. DE; LAVRADO,HELENA P.; JUNQUEIRA,ANDREA O.R.
ABSTRACT The reef-building vermetid Petaloconchus varians occurs in the western Atlantic Ocean, from the Caribbean Sea to the southern coast of Brazil. The present study evaluated the abundance of P. varians on intertidal rocky shores in Ilha Grande Bay (Rio de Janeiro State), and characterized their reefs, describing the species density, besides the weight and the belt width of the reefs. Petaloconchus varians reefs were recorded at 25 sites, with rocky shores exposed to different wave action (very sheltered, sheltered, semi-exposed and exposed) and slopes (10° to 46°). Clusters of individuals constructed large reefs along the middle intertidal zone, creating a wide belt (38 cm to 2 m). The density of P. varians and the weight of the reefs ranged from 620...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Molluscs; Rio de Janeiro; Southwestern Atlantic Ocean; Wave exposure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300907

Synthesis and evaluation of arylamidine derivatives for new antimicrobial and cytotoxic activities
Provedor de dados: 42
Autores: MONTE,ZENAIDE S.; SILVA,AMANDA M.; LIMA,GLÁUCIA M.S.; SILVA,TERESINHA G. DA; MARQUES,KARLA M.R.; RODRIGUES,MARIA D.; FALCÃO,EMERSON P.S.; MELO,SEBASTIÃO J.
ABSTRACT A series of arylamidines 3a-j was designed, synthesized and investigated for antimicrobial activity. Structures of the compounds were confirmed by IR, 1H-NMR and 13C-NMR and a 2D spectroscopic study was performed. A preliminary screening of the antimicrobial tests clearly showed that three out of ten arylamidines, viz, 3f, 3g and 3i, were effective against all the gram-negative bacteria: Klebsiella pneumoniae, Pseudomonas aeruginosa and Salmonella enteric; and against the yeast, candida albicans. Further, the Minimum Inhibitory Concentrations (MIC) against the bacteria and yeast were determined. All compounds 3a-d, 3f, 3g, 3i and 3j were also investigated for their low cytotoxic effects on tested cell lines. Compounds 3d and 3f were the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arylamidines; 2D spectroscopy; Gram-negative bacteria; Yeast; Cytotoxicity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301051

Occurrence of Dendrocephalus brasiliensis Pesta, 1921 (Crustacea, Anostraca) in the Caras river, southern Ceara, Brazil
Provedor de dados: 42
Autores: FREITA,FRANCISCO R.V.; LUCENA,,ISIS C. DE; ALENCAR,,DAMARES R.; SANTOS,ISRAEL J.M.; PINHEIRO,ALLYSSON P.
ABSTRACT Occurrence of Dendrocephalus brasiliensis Pesta, 1921 (Crustacea, Anostraca) in the Caras river, southern Ceara, Brazil. The specimens were collected in March and April 2014. The new occurrence extends the distribution and update area of occupancy of the species, which is characterized by a specific habitat: temporary lakes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Branchiopoda; Fairy shrimp; Aquiculture; Fresh water.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301047

Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon
Provedor de dados: 42
Autores: SILVA JÚNIOR,RENATO O. DA; SOUZA,EVERALDO B. DE; TAVARES,ALEXANDRA L.; MOTA,JOSÉ A.; FERREIRA,DOUGLAS B.S.; SOUZA-FILHO,PEDRO W.M.; ROCHA,EDSON J.P. DA.
ABSTRACT This study estimated the reference evapotranspiration rate (ETo) for the Itacaiúnas River Watershed (IRW), Eastern Amazonia, and measured the accuracy of eight empirical equations: Penman-Monteith (PM), Priestley-Taylor (PT), Hargreaves and Samani (HS), Camargo (CAM), Thornthwaite (TH), Hamon (HM), Kharrufa (KF) and Turc (TC) using monthly data from 1980 to 2013. In addition, it verifies the regional applicability to the IRW using a for the Marabá-PA station. The methods TC and PM (FAO56) presented the best results, which demonstrate that radiation and higher temperatures are the dominant drivers in the Evapotranspiration process, while relative humidity and wind speed have a much smaller impact. The temporal and spatial variability of ETo for IRW...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calibration; Decades; Eastern Amazon; Evapotranspiration; Methods; Watershed.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000501985

Scientometric indicators for Brazilian research on High Energy Physics, 1983-2013
Provedor de dados: 42
Autores: ALVAREZ,GONZALO R.; VANZ,SAMILE A.S.; BARBOSA,MARCIA C.
ABSTRACT This article presents an analysis of Brazilian research on High Energy Physics (HEP) indexed by Web of Science (WoS) from 1983 to 2013. Scientometric indicators for output, collaboration and impact were used to characterize the field under study. The results show that the Brazilian articles account for 3% of total HEP research worldwide and that the sharp rise in the scientific activity between 2009 and 2013 may have resulted from the consolidation of graduate programs, the increase of the funding and of the international collaboration as well as the implementation of the Rede Nacional de Física de Altas Energias (RENAFAE) in 2008. Our results also indicate that the collaboration patterns in terms of the authors, the institutions and the countries...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; High Energy Physics; Impact; Scientific collaboration; Scientific output; Scientometrics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502525

Conservation of geosites as a tool to protect geoheritage: the inventory of Ceará Central Domain, Borborema Province - NE/Brazil
Provedor de dados: 42
Autores: MOURA,PÂMELLA; GARCIA,MARIA DA GLÓRIA M.; BRILHA,JOSÉ B.; AMARAL,WAGNER S.
ABSTRACT The Ceará Central Domain, in the northern Borborema Province/NE Brazil, encompasses important geological records (geosites) which allow understanding a relevant period of the Earth’s evolution, mainly associated to Neoproterozoic Brazilian/Pan-African Cycle and West Gondwana amalgamation, besides Neoarchean to Ordovician records. The presented geoheritage inventory aims to characterise the geosites with scientific relevance of Ceará Central Domain. By applying a method for large areas, the final selection resulted in eight geological frameworks represented by 52 geosites documented in a single database. This is the first step for a geoconservation strategy based on systematic inventories, statutory protection, geoethical behaviour and awareness...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geological heritage; Geoconservation; Inventory; Borborema Province; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602625

Cytotoxicity and bacterial membrane destabilization induced by Annona squamosa L. extracts
Provedor de dados: 42
Autores: PINTO,NÍCOLAS C.C.; SILVA,JUCÉLIA B.; MENEGATI,LAURA M.; GUEDES,MARIA CLARA M.R.; MARQUES,LUCAS B.; SILVA,THIAGO P. DA; MELO,ROSSANA C.N. DE; SOUZA-FAGUNDES,ELAINE M. DE; SALVADOR,MARCOS J.; SCIO,ELITA; FABRI,RODRIGO L.
ABSTRACT This study aimed to further investigate the cytotoxicity against tumor cell lines and several bacterial strains of Annona squamosa and its mode of action. Methanol extracts of A. squamosa leaves (ASL) and seeds (ASS) were used. ASL showed significant antibacterial activity against S. aureus, K. pneumoniae and E. faecalis with MIC values of 78, 78 and 39 µg/mL respectively. Moreover, ASL exhibited significant biofilm disruption, rapid time dependent kinetics of bacterial killing, increased membrane permeability and significantly reduced the cell numbers and viability. Regarding the cytotoxicity against tumor cell lines, ASS was more active against Jurkat and MCF-7 cells, with CI50 1.1 and 2.1 µg/mL, respectively. ASL showed promising activity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkaloids; Annona squamosa; Antibacterial; Citotoxicity; Herbal medicine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502053

Screening of melon genotypes for resistance to vegetable leafminer and your phenotypic correlations with colorimetry
Provedor de dados: 42
Autores: OLIVEIRA,FREDERICO I.C. DE; FIEGE,LEONARDO B.C.; CELIN,ELAINE F.; INNECCO,RENATO; NUNES,GLAUBER H.S.; ARAGÃO,FERNANDO A.S. DE.
ABSTRACT Melon is one of the most important vegetable crops in the world. With short cycle in a system of phased planting, phytosanitary control is compromised, and a great volume of agricultural chemicals is used to control vegetable leafminer. Genetic control is an ideal alternative to avoid the damage caused by this insect. Thus, the aim of this study was to evaluate Cucumis accessions in regard to resistance to leafminer and correlate the variables analyzed. Fifty-four accessions and four commercial hybrids of melon were tested. The study was divided into two experiments: with and with no choice. The following characteristics were evaluated: with choice, in field - subjective score based on the infestation and the number of mines per leaf; and with no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo; Germplasm; Liriomyza sativae; Lab system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301155

Terpene Esters from Natural Products: Synthesis and Evaluation of Cytotoxic Activity
Provedor de dados: 42
Autores: VICTOR,MAURICIO M.; DAVID,JORGE M.; SAKUKUMA,MARIA C.K.; COSTA-LOTUFO,LETÍCIA V.; MOURA,ANDREA F.; ARAÚJO,ANA J.
ABSTRACT Natural steroids and triterpenes such as b-sitosterol, stigmasterol, lupeol, ursolic and betulinic acids were transformed into its hexanoic and oleic esters, to evaluate the influence of chemical modification towards the cytotoxic activities against tumor cells. The derivatives were evaluated against five tumor cell lines [OVCAR-8 (ovarian carcinoma); SF-295 (glioblastoma); HCT-116 (colon adenocarcinoma); HL-60 (leukemia); and PC-3 (prostate carcinoma)] and the results showed only betulinic acid hexyl ester exhibits cytotoxic potential activity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antitumor activity; Chemical modification; Derivative synthesis; Natural products esters.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401369

A potent larvicidal agent against Aedes aegypti mosquito from cardanol
Provedor de dados: 42
Autores: PAIVA,DERISVALDO R.; LIMA,DÊNIS P. DE; AVVARI,NAGA P.; ARRUDA,EDUARDO J. DE; CABRINI,ISAIAS; MARQUES,MARIA RITA; SANTOS,EDSON A. DOS; BIAGGIO,FRANCISCO C.; SANGI,DIEGO P.; BEATRIZ,ADILSON.
ABSTRACT Cardanol is a constituent of Cashew Nut Shell Liquid that presents larvicidal activity against Aedes aegypti. The isolation of cardanol is somewhat troublesome, however, in this work we describe an efficient and inexpensive method to obtain it as a pure material. The compound was used as starting material to make chemical transformation leading to saturated cardanol, epoxides and, halohydrins. These derivatives were tested for toxicity against Aedes aegypti larvae. The results showed that iodohydrins are very promising compounds for making commercial products to combat the vector mosquito larvae presenting a LC50 of 0.0023 ppm after 72 h of exposure.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aedes aegypti; Insecticide; Larvicide; Phenolic lipids; CNSL.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200373

Nutrition facts and limits for micronutrients in tree species used in urban forestry
Provedor de dados: 42
Autores: BRUN,FLÁVIA G.K.; BRUN,ELEANDRO J.; GERBER,DIONATAN; SZYMCZAK,DENISE A.; LONDERO,EDUARDO K.; MEYER,EVANDRO A.; NAVROSKI,MÁRCIO C.
ABSTRACT There is a huge lack of researches that evaluate the nutritional limits in tree species used in urban forestry, especially in terms of micronutrients. This study aimed to establish limits and range of micronutrients levels for the proper development of tree species utilized in urban forestry. The study was conducted in the city of Santa Maria-RS-Brazil. Through forest inventory, 23 forest species present in urban forest were selected, and 05 vegetative branches of each tree were collected, in which the contents of B, Cu, Fe, Mn and Zn were analyzed. Ranges of micronutrients’ contents were developed for class limits criteria. Nutritional problems were detected for B, Cu and Zn in G. robusta and S. cumini, indicating a need of fertilization and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest species; Urban forestry; Forest nutrition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401881

Gas exchange and antioxidant activity in seedlings of C opaifera langsdorffii Desf. under different water conditions
Provedor de dados: 42
Autores: ROSA,DEREK B.C.J.; SCALON,SILVANA P.Q.; CREMON,THAIS; CECCON,FELIPE; DRESCH,DAIANE M.
ABSTRACT The aim of this study was to evaluate gas exchange, efficiency of the photosynthetic apparatus, and antioxidant activity in Copaifera langsdorffii Desf. The seedlings were cultivated under different conditions of water availability, in order to improve the utilization efficiency of available water resources. The seedlings were cultivated in four different water retention capacities (WRC- 25%, 50%, 75%, and 100%), and evaluated at four different time (T- 30, 60, 90, and 120 days). During the experimental period, seedlings presented the highest values for carboxylation efficiency of Rubisco (A/Ci), intrinsic water use efficiency (IWUE = A/gs), chlorophyll index, and stomatal opening, when grown in the substrate with 75% WRC, but the stomatal index...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant enzymes; Chlorophyll a fluorescence; Photosynthesis; Water stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603039

On topological groups with an approximate fixed point property
Provedor de dados: 42
Autores: BARROSO,CLEON S.; MBOMBO,BRICE R.; PESTOV,VLADIMIR G.
Abstract A topological group   G has the Approximate Fixed Point (AFP) property on a bounded convex subset   C of a locally convex space if every continuous affine action of   G on   C admits a net    (  x i ),     x i ∈ C, such that      x i -  g ⁢  x i ⟶ 0 for all    g ∈ G. In this work, we study the relationship between this property and amenability.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amenable groups; Approximate fixed point property; Følner property; Reiter property.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100019

Leaf area estimation from linear measurements in different ages of Crotalaria juncea plants
Provedor de dados: 42
Autores: CARVALHO,JULIANA O. DE; TOEBE,MARCOS; TARTAGLIA,FRANCIELI L.; BANDEIRA,CIRINEU T.; TAMBARA,ANDRÉ L.
ABSTRACT The goal of this study was to estimate the leaf area of Crotalaria juncea according to the linear dimensions of leaves from different ages. Two experiments were conducted with C. juncea cultivar IAC-KR1, in the 2014/2015 sowing seasons. At 59, 82, 102, 129 days after sowing (DAS) of the first and 61, 80, 92, 104 DAS of the second experiment, 500 leaves were collected, totaling 4,000 leaves. In each leaf, the linear dimensions were measured (length, width, length/width ratio and length × width product) and the specific leaf area was determined through Digimizer and Sigma Scan Pro software, after scanning images. Then, 3,200 leaves were randomly separated to generate mathematical models of leaf area (Y) in function of linear dimension (x), and 800...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Non-destructive method; Image processing; Mathematical models; Model validation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401851

Purification and characterization of a thermostable alkaline cellulase produced by Bacillus licheniformis 380 isolated from compost
Provedor de dados: 42
Autores: MARCO,ÉVILIN G. DE; HECK,KARINA; MARTOS,EMERSON T.; VAN DER SAND,SUELI T.
ABSTRACT During composting processes, the degradation of organic waste is accomplished and driven by a succession of microbial populations exhibiting a broad range of functional competencies. A total of 183 bacteria, isolated from a composting process, were evaluated for cellulase activity at different temperatures (37, 50, 60, and 70°C) and pH values. Out of the 22 isolates that showed activity, isolate 380 showed the highest cellulase activity. Its ability to produce cellulase was evaluated in culture medium supplemented with carboxymethyl cellulose, microcrystalline cellulose, wheat straw, and rice husk. The culture medium supplemented with carboxymethyl cellulose induced higher enzyme activity after 6 hours of incubation (0.12 UEA mL-1 min-1). For...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkalophilic enzyme; Carboxymethyl celullase; Compost; High temperature.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502359

Cytogenetics and Molecular Genetic Analysis of Chimerism in Marmosets (Callithrix: Primates)
Provedor de dados: 42
Autores: SILVA,MONIQUE O.M.; ARMADA,JORGE LUÍS A. DE; VERONA,CARLOS EDUARDO S.; HELIODORO,GABRIELA; NOGUEIRA,DENISE M.
ABSTRACT The birth of fraternal twins is a characteristic frequently observed in callitrichids. Cytogenetic studies have demonstrated hematopoietic chimerism in marmosets with the occurrence of two cell lines 2n=46,XX/46,XY in females and males co-twins, without phenotypic changes. Amplification by PCR have also been used to verify the presence of the SRY gene in female chimaeras. Our aim was to verify the occurrence of chimerism in Callithrix sp. individuals considered as hybrids according to their intermediate phenotypes between C. jacchus and C. penicillata. Blood samples from 37 Callithrix sp. individuals were collected. Hematopoietic chimerism 2n=46,XX/46,XY was detected by cytogenetic analysis in five individuals, three males and two females. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Karyotype; SRY; Chimaeras; Hybridization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602793

Estimated evolution of total pollutant gas emissions associated with vehicle activity in the Metropolitan Region of Porto Alegre until 2030
Provedor de dados: 42
Autores: CHOVERT,ANGEL D.; ALONSO,MARCELO F.
ABSTRACT In recent years, the majority of economic sectors in Brazil have gone through processes of development and transformation. These processes have led to increases in environmental pollution of all kinds; air pollution being one of the most adverse. The Brazilian transportation sector, which heavily affects the air quality, experienced a significant increase in its vehicle fleet thus provoking larger emissions of pollutant gases, mainly in regions with high population density such as the Metropolitan Region of Porto Alegre (MRPA). Within this research, considering mainly the ozone precursor species and Carbon Monoxide and using the year 2001 as a base year, scenarios are obtained for vehicular emissions of pollutant gases in the MRPA until the year...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air pollution; Bottom-up; Emission scenarios; Vehicle fleet.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000501971

Influence of substrate on the richness and composition of Neotropical cave fauna
Provedor de dados: 42
Autores: ZEPON,TAMIRES; BICHUETTE,MARIA ELINA.
ABSTRACT The food base in the subterranean environment consists mainly of allochthonous materials. In this environment the resources are distributed generally in a heterogeneous dispersed way and the distribution of resources and their availability determine where the terrestrial invertebrates will reside, which is important for understanding ecological relationships and to establish conservation strategies. Thus, we tested how the complexity of substrates influences the richness and composition of the subterranean terrestrial invertebrates in the Presidente Olegário karst area, southeastern Brazil. We carried out collections in six caves during both dry and wet seasons, using combined collection methods. We observed different distributions in relation to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Communities; Conservation; Food web; Terrestrial invertebrates; Trophic resources.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401615

Floristic-functional variation of tree component along an altitudinal gradient in araucaria forest areas, in Southern Brazil
Provedor de dados: 42
Autores: SOBOLESKI,VANESSA F.; HIGUCHI,PEDRO; SILVA,ANA CAROLINA DA; SILVA,MARIELE A.F. DA; NUNES,AMANDA S.; LOEBENS,RODINELI; SOUZA,KARINE DE; FERRARI,JHENIFFER; LIMA,CARLA L.; KILCA,RICARDO V.
ABSTRACT We aimed to investigate the taxonomic and functional variations of tree component of Araucaria Forest (AF) areas located along an altitudinal gradient (700, 900 and 1,600 m asl), in the southern region of Brazil. The functional traits determined were leaf area, specific leaf area, wood density, maximum potential height and dispersal syndromes and deciduousness. The data were analyzed through a functional and taxonomic dissimilarity dendrograms, community-weighted mean trait values, parametric and nonparametric tests, and Principal Component Analysis. The largest floristic-structural similarity was observed between the lower altitude areas (700 and 900 m asl), whose Bray-Curtis distance was 0.63. The area at 700 m asl was characterized by a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Functional traits; Altitude; Similarity; Subtropical forest.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502219

Early and late analysis of postpartum stress in newborn foals
Provedor de dados: 45
Autores: Cruz,R.K.S.; Alfonso,A.; Lourenço,M.L.G.; Souza,F.F.; Oba,E.; Ramos,P.R.R.; Chiacchio,S.B.
ABSTRACT The aim of this study was to evaluate newborn foals stress in the first 48 hours of life. Heart rate (HR), heart rate variability (HRV) and serum cortisol concentrations, blood glucose, and lactate were determined in foals (n = 20, Paint Horse). Cortisol concentrations decreased significantly between four and 48 hours, with the highest concentration at 4 hours after birth. Positive correlations between cortisol and lactate occurred between 12 and 16 hours. And there was a negative correlation between cortisol and lactate 4 hours after birth. Among the values obtained for HR, there was significantly difference between the the value obtained at twelve hours of life moment and all the other moments measured, the highest values were at birth, 24 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equine neonate; Cortisol; Heart rate; Heart rate variability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400785

Egg production evaluation of laying hens by multivariate analysis
Provedor de dados: 45
Autores: Ferreira,P.B.; Rorato,P.R.N.; Mello,F.C.B.; Bevilaqua,B.; Macedo,A.; Brittes,L.B.P.
ABSTRACT This study aimed to verify the existence of differences between hens from the Barred Plymouth Rock (PRB) breed and White Plymouth Rock (PRW) breed by multivariate analysis of weekly egg production and cumulative during the years of 1998 and 2010, from the Laboratório de Avicultura (LAVIC) of the Departamento de Zootecnia at the Universidade Federal de Santa Maria (UFSM). For the analysis of the univariate and multivariate variance, the experimental design was completely randomized with two treatments (breed) and 299 repetitions of the PRW breed and 350 of the PRB breed. The parameters analyzed were the weekly productions of eggs per bird from the 21st to the 50th week of age (P21, P22, ..., P50) and production of eggs accumulated being from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Analysis of multivariate variance; Cluster; Principal components.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300676

Climate conditions associated with the occurrence of antimicrobial and macrocyclic lactone residues in bulk tank milk
Provedor de dados: 45
Autores: Picinin,L.C.A.; Toaldo,I.M.; Hoff,R.B.; Souza,F.N.; Leite,M.O.; Fonseca,L.M.; Diniz,S.A.; Silva,M.X.; Haddad,J.P.A.; Cerqueira,M.M.O.P.; Bordignon-Luiz,M.T.
ABSTRACT The present study aimed to identify the climate condition parameters that are associated with the occurrence of antimicrobial and macrocyclic lactone residues in bulk tank milk using a multivariate principal components analysis (PCA). A total of 132 raw milk samples were collected at dairy farms in Minas Gerais State in Brazil and analyzed for 35 analytes, comprising macrocyclic lactones and antibacterials, using liquid chromatography coupled with mass spectrometry in tandem mode spectrometry. Of the 132 samples, 34 (25.76%) bulk tank milk samples were positive for at least one analyte. PCA showed that antimicrobial residues in bulk tank milk occurred less frequently on days with a higher average temperature, maximum temperature and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthelmintic; Antibiotic; Veterinary drug; Seasonality; Raw milk.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200474

Undifferentiated carcinoma of the pancreas in a cockatiel ( Nymphicus hollandicus ): case report
Provedor de dados: 45
Autores: Carvalho,T.S.G.; Abreu,C.C.; Nakayama,P.A.; Wouters,F.; Saad,C.E.P.; Zangeronimo,M.G.
ABSTRACT Undifferentiated carcinoma of the pancreas is a malignant neoplasm that is uncommon among domestic species, especially cockatiels (Nymphicus hollandicus), one of the most popular birds kept as a pet throughout the world. The aim of this study was to describe the occurrence of an undifferentiated carcinoma in the pancreas of a cockatiel. A bird, an adult male that died naturally with swelling in the abdominal region, was referred to necropsy. Macroscopic examination showed poor body condition, the coelomic cavity filled with liquid and a white mass attached to the pancreas and other smaller masses attached to the duodenum. Tissue samples and organs were harvested and fixed in 10% buffered formalin, then routinely processed for histopathology and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pancreatic cancer; Epithelial tumor; Histopathology; Parrot; Cacatuidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300600

Cisto aracnoide medular em um cão: relato de caso
Provedor de dados: 45
Autores: Zang,L.; Oliveira,M.P.; Tagliari,N.J.; Fagundes,N.; Ferreira,M.P.; Alievi,M.M.
RESUMO O cisto aracnoide medular (CAM) é uma doença que pode ocorrer em humanos e animais, podendo causar sinais clínicos neurológicos. A origem dessa enfermidade ainda é desconhecida assim como sua patofisiologia. Acredita-se que pode ser congênita ou adquirida. Até o momento, não foi verificada predileção por raça, sexo ou idade. O objetivo deste trabalho é relatar um caso de CAM lombar em um cão com 13 anos de idade, que causou paralisia dos membros pélvicos. Ao exame clínico, o paciente apresentava dor lombar na palpação epaxial, incontinência urinária e fecal, com paraplegia de membros pélvicos. A sintomatologia progrediu durante oito meses, com histórico de trauma. Na mielografia, foi identificado um CAM na região lombar (L1-L2) lateralizado para a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canino; Cisto aracnoide; Durectomia; Geriatria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300613

Nitric oxide and immune response in infection control of Caseous Lymphadenitis
Provedor de dados: 45
Autores: Oliveira Neto,M.G.; Santos,H.A.; Fraga,R.E.; Pacheco,A.S.; Sampaio,G.P.; Moura-Costa,L.F.; Meyer,R.; Silva,M. Costa; Trindade,S.C.; Vale,V.L.C.
ABSTRACT This study aimed to evaluate aspects of host immune response using an experimental infection model of Corynebacterium pseudotuberculosis (CP) in C57/Black6 wild-type and knockout for nitric oxide (KO-NO) mice. 28 mice were evaluated: 4 wild-type controls; 10 wild-type infected with CP; 4 KO-NO controls; 10 KO-NO infected with CP. Infection procedures were carried out by intraperitoneal inoculation using 107. Infected C57/Black6 KO-NO mice began to die after the 5° day post-inoculation, up until the 14º day. Neutrophils were found in increased numbers in the infiltrate of KO-NO murine peritoneal cavities. Examination of splenic tissue revealed an accumulation of lymphocytes, predominantly CD8 T-cells, in experimental animal groups. KO-NO animals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitric oxid; Knockout mice; Corynebacterium pseudotuberculosis; Caseous limphadenitis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601565

The effect of feed intake containing whole cottonseed on blood parameters of Nellore bulls
Provedor de dados: 45
Autores: Gomes,V.S.; Mano,S.B.; Freitas,M.Q.; Santos,M.D.; Azeredo,V.B.; Silva,J.M.; Santos,E.B.; Conte-Júnior,C.A.
ABSTRACT The aim of this study was to evaluate the effect of diets containing whole cottonseed (WC) on blood biochemical parameters of bulls. Thirty bulls with 30±6 months and 382.7±28.4kg were kept in feedlot (85 days) and fed the following WC levels: 0, 2.22, 4.44, 6.66, 8.88 and 11.11%. In comparing biochemical indicators from the beginning to the end of the experiment, the control group (CG) and those fed diets containing 2.22, 8.88 and 11.11% of WC had an increase (P&lt;0.05) in serum Ca concentrations (8.34±0.65−9.56±0.92mEqL-1). In relation to Fe (202.79±69.04−300.04±79.88µg/dL), the CG and those treated with 6.66% WC showed an increase (P&lt;0.05) in serum concentrations. As to the Mg (1.92±0.18−2.40±0.27mEqL-1), groups treated with diet containing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bull; Serum biochemical; Whole cottonseed; Gossypol.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300551

Efeito metafilático do zinco injetável sobre parâmetros metabólicos e oxidativos de ovelhas no pós-parto imediato
Provedor de dados: 45
Autores: Rocha,J.F.X.; Aires,A.R.; Mendes,F.C.; Pivoto,F.L.; Amaral,C.; Torbitz,V.D.; Moresco,R.; Gonçalves,M.A.; Flores,E.M.M.; Sousa,R.S.; Ortolani,E.L.; Rocha,R.X.; Leal,M.L.R.
ABSTRACT The aim of this study was to evaluate a new source of injectable organic zinc (zinc edetate) on the energy and oxidative profile in sheep during the immediate postpartum period. Twenty-six Texel breed animals were previously identified and divided into two experimental groups: the treated group (TG; n= 13) that comprised the animals that received a subcutaneous (SC) injection of 100 mg of zinc edetate (2 mL) fifteen days before the parturition expected date and the control group (CG; n=13) that comprised the animals that received 2mL of physiological solution at the same date of TG. Blood samples were collected on the parturition day for the assessment of serum fructosamine, cholesterol and triglycerides, insulin-like growth factor type 1 (IGF-1),...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Ovinos; Metabolismo energético; Perfil oxidativo; Edetato de zinco.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000401062

Acaricidal activity of leaves of Morus nigra against the cattle tick Rhipicephalus microplus
Provedor de dados: 45
Autores: Dantas,A.C.S.; Freire,D.P.; Souza,G.R.; Almeida,J.R.G.S.; Rolim,L.A.; Castro,R.N.; Horta,M.C.
ABSTRACT The acaricidal activity of crude ethanolic extract and fractions from the leaves of Morus nigra (Moraceae) was carried out on female cattle ticks Rhipicephalus microplus, using the adult immersion test. The mortality and fertility of females exposed to different concentrations of hexane, chloroform and ethyl acetate fractions, as well as ethanolic extract of M. nigra with concentrations of 5, 10 and 25mg/ml were evaluated using three treatment groups, two control groups and triplicate tests. The study also identified the main phenolic compounds of the extract and fractions of this species by HPLC. The chloroform fraction of leaves of M. nigra (25mg/mL) showed the best results for this species, obtaining 62.6% of inhibition of oviposition, 39.3% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tick control; Acaricide; Plant extract; Mulberry; HPLC.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300523

Avaliação morfofuncional do enxerto de túnica albugínea suína na cistoplastia em ratos
Provedor de dados: 45
Autores: Moraes,T.A.; Canellas,A.C.C.; Rodrigues,A.F.; Lancetta,C.F.F.; Degani,V.A.N.; Ferreira,M.L.G.
RESUMO O objetivo deste trabalho é avaliar o uso da túnica albugínea suína na cistoplastia em ratos, avaliando funcionalidade, capacidade de reparação do órgão e possibilidades de complicações. Foram selecionados 30 ratos Wistar, machos, de seis meses de idade, divididos em: um grupo teste (TA), em que os animais receberam o enxerto de túnica albugínea suína após a cistectomia parcial e um grupo controle (C), em que os animais sofreram somente a cistectomia parcial. Os animais pertencentes a ambos os grupos foram divididos igualmente em subgrupos de cinco animais cada, que sofreram eutanásia em sete, 28 e 42 dias de pós-operatório. Foi realizada uma análise macroscópica e, posteriormente, uma análise histopatológica da região da ferida cirúrgica. Aos sete...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cistectomia parcial; Biomateriais; Xenoenxerto.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400973

Angioceratoma conjuntival canino: relato de caso
Provedor de dados: 45
Autores: Souza,J.O.T.; Wouk,A.F.P.F.
RESUMO O angioceratoma é um tumor de origem vascular, semelhante ao hemangioma, que se diferencia deste por alterações histológicas epiteliais. A apresentação ocular do angioceratoma é pouco frequente em cães, sendo mais comum a ocorrência de hemangioma e hemangiossarcoma. Neste relato, é descrito o caso de um cão, macho, da raça Border Collie, que apresentava uma massa localizada, hiperêmica, bem vascularizada e protrusa, na região temporal da conjuntiva bulbar do olho direito (OD). Foi realizado exame oftalmológico completo e ultrassonografia ocular, tendo sido possível observar que a massa não envolvia outras estruturas oculares além da conjuntiva. Dessa forma, foi realizada a conjuntivectomia parcial, e o material foi encaminhado para análise...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cães; Tumor conjuntival; Angioceratoma; Hemangioma.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501198

Virulence, resistance, and genetic relatedness of Escherichia coli and Klebsiella sp. isolated from mule foals
Provedor de dados: 45
Autores: Carneiro,V.C.; Lessa,D.A.B.; Guttmann,P.M.; Magalhaes,H.; Aquino,M.H.C.; Cunha,L.E.R.; Arais,L.R.; Cerqueira,A.M.F.
ABSTRACT Respiratory diseases are common in young horses but little is known about such infections in mule foals. This study aimed to characterize Escherichia coli and Klebsiella sp. isolated from tracheal wash (TW) and fecal samples (FS) of mule foals, with or without cytological evidence of respiratory disease. Strains were analyzed against 13 antimicrobials, for presence of Extended spectrum beta-lactamase (ESBL), and virulence genes. Phylogrouping and Randomic (RAPD)-PCR profiles were used to evaluate their genetic relatedness. E. coli strains from TW and FS showed greatest resistance to tetracycline, while Klebsiella strains were mainly resistant to ampicillin; multidrug resistance and ESBL production were also detected. The blaCTX gene prevailed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Escherichia coli; Klebsiella; Respiratory disease; Virulence; Antimicrobial resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501073

Desempenhos produtivo e reprodutivo de um rebanho F1 Holandês x Gir em Minas Gerais
Provedor de dados: 45
Autores: Ribeiro,L.S.; Goes,T.J.F.; Torres Filho,R.A.; Araújo,C.V.; Reis,R.B.; Saturnino,H.M.
RESUMO Objetivou-se avaliar os desempenhos produtivo e reprodutivo de vacas F1 Holandês x Gir Minas Gerais, as quais foram mantidas em sistema de produção a pasto no verão, com suplementação de concentrado, e, no inverno, alimentadas com cana-de-açúcar, polpa de citros e concentrado. As características avaliadas foram: idade ao primeiro parto, intervalo parto-primeiro serviço, período de serviço, intervalo de partos, permanência da matriz no rebanho, produção de leite total por lactação, duração da lactação, produção média diária, produções ajustadas a 280 dias e a 305 dias de lactação, produção de leite por intervalo de partos e curvas de lactação conforme ordem de partos, época de partos e período de serviço. A função gama incompleta foi utilizada para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos de leite; Curva de lactação; Rebanho mestiço; Produção de leite.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601624

Dispneia expiratória restritiva em um gato com fibrose pulmonar idiopática: relato de caso
Provedor de dados: 45
Autores: Pereira,C.O.; Costa,F.V.A.; Gomes,D.C.; Kasper,P.N.; Vieira,A.B.; Driemeier,D.
RESUMO As doenças pulmonares intersticiais constituem um grupo de doenças difusas do parênquima pulmonar, no qual a fibrose pulmonar intersticial está incluída. Histologicamente, esta se caracteriza por hiperplasia de pneumócitos tipo II, hiperplasia ou hipertrofia de músculo liso e fibrose. Embora a patogenia da fibrose pulmonar intersticial não esteja bem elucidada, devido às semelhanças microscópicas encontradas nos pneumócitos tipo II em felinos e na forma familiar da doença em humanos, acredita-se que haja caráter genético para o seu desenvolvimento. Os sinais clínicos frequentemente relatados incluem desconforto respiratório, cianose, letargia e perda de peso. Devido ao caráter progressivo e à ausência de tratamento específico, a doença apresenta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crepitação; Doenças pulmonares intersticiais; Pneumócitos tipo II.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300593

Altered indirect hemagglutination method for easy serotyping of Haemophilus parasuis
Provedor de dados: 45
Autores: Lorenson,M.S.; Miani,M.; Guizzo,J.A.; Barasoul,B.; Martínez-Martínez,S.; Rodríguez-Ferri,E.F.; Gutiérrez-Martín,C.B.; Kreutz,L.C.; Frandoloso,R.
ABSTRACT Glässer's disease is an emergent bacterial disease that affects swine husbandries worldwide causing important economic losses. The aetiological agent, Haemophilus parasuis, is currently divided in fifteen serovars but an increasing number of non-typeable serovars have been reported. Indirect hemagglutination (IHA) is indicated as a serotyping method for H. parasuis. In the present study, we describe an additional step that aims to work around a possible obstacle in the original protocol that may compromise the outcome of this assay. We observed that the choice of anticoagulant for blood collection influences and/or impairs spontaneous adsorption of H. parasuis antigens on sheep red blood cells (SRBCs). However, regardless of the anticoagulant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Haemophilus parasuis; Diagnosis; Tannic acid; Serotyping; Indirect hemagglutination.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100015

Expressão gênica de IGF-I e GHR no fígado e no músculo do peito de codornas de corte suplementadas com diferentes níveis de metionina em duas gerações sucessivas
Provedor de dados: 45
Autores: Flora,R.P.D.; Dionello,N.J.L.; Benitez,L.; Germano,J.M.; Gotuzzo,A.G.; Freitas,S.
RESUMO Este estudo foi desenvolvido com o objetivo de avaliar a expressão gênica do fator de crescimento semelhante à insulina I (IGF-I) e do receptor do hormônio do crescimento (GHR) no fígado e no músculo do peito de codornas de corte, alimentadas com dietas contendo diferentes níveis de suplementação de metionina, em duas gerações sucessivas. Foram utilizadas codornas dos 22 aos 42 dias de idade, distribuídas em três e cinco tratamentos na primeira e na segunda geração, respectivamente. Ao final, as aves foram abatidas por deslocamento cervical, sendo coletados fígado e músculo do peito para extração de RNA total. O cDNA foi amplificado usando primers específicos para os genes analisados. Os resultados mostraram que a expressão dos genes GHR e IGF-I...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crescimento; Extração de RNA; Geração.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100205

Survey of mutations in prolificacy genes in Santa Ines and Morada Nova sheep
Provedor de dados: 45
Autores: Holanda,G.M.L.; Oliveira,J.C.; Silva,D.M.F.; Rocha,S.S.N.; Pandolfi,V.; Adrião,M.; Wischral,A.
ABSTRACT Polymorphisms in the BMP-15 gene related to Galway (FecXG) and Inverdale (FecXI) and in the BMPR-1B gene known as Booroola (FecB) mutations were investigated using the Polymerase Chain Reaction - Restriction Fragment Length Polymorphism (PCR-RFLP) method, on sheep from the breeds Santa Inês (n= 574) and Morada Nova (n=282). DNA was extracted and amplified through PCR with specific primers that introduced a restriction site in association with the mutation. The PCR products were submitted to endonucleases. The experiment found no FecXG and FecXI mutations. Six samples of animals with multiple offspring/birth history presented polymorphism for FecB similar to control samples, but this pattern was not confirmed by nucleotide sequencing. Although the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Galway; Inverdale; Booroola; Sheep; Prolificacy gene; Santa Inês; Morada Nova.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000401047

Productive response of hair ewes crossed with Damara and Dorper and growth of their lambs
Provedor de dados: 45
Autores: Salinas-Rios,T.; Ramírez-Godínez,J.A.; Rodríguez-Almeida,F.A.; Hernández-Bautista,J.; Torres-Salado,N.; Herrera-Pérez,J.
ABSTRACT Profitability of sheep production depends on the reproductive response of ewes and growth of their lambs, which can be improved through the ram genotype. The aim of this study was to evaluate the reproductive response of Blackbelly (Bb), Pelibuey (Pb), Katahdin (Kat) and Dorper (Dor) ewes crossed with Damara (Dam) and Dor rams and the growth of their offspring. To measure percentage of single and multiple lambings (MLP), 234 Bb, Pb, Kat and Dor ewes were used. To measure lamb growth, the offspring of 86 Bb x Pb (BbPb) ewes and 73 Kat x Dor (KatDOR) ewes were used. Four Dor x BbPb, six Dam x BbPb and six Dam x KatDor lambs were slaughtered for carcass assessment. MLP was analyzed with the CATMOD procedure considering the factors age and breed. Lamb...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lambs; Breeding; Weaning; Ewes; Lambing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200429

Sonda uretral flexível como método alternativo para aferição invasiva da pressão intracraniana em trauma cranioencefálico induzido em coelhos
Provedor de dados: 45
Autores: Aiello,G.; Andrades,A.O.; Ripplinger,A.; Soares,A.V.; Polidoro,D.; Vaz,M.A.B.; Colvero,A.C.; Santos,R.P.; Conceição,R.; Chaves,R.O.; Mazzanti,A.
RESUMO O objetivo deste estudo foi utilizar a sonda uretral flexível como método alternativo para aferição da pressão intracraniana em coelhos com trauma cranioencefálico induzido pelo cateter de Fogarty 4 Fr (balão epidural) e comparar os dados obtidos com o método convencional de cateter de ventriculostomia. Foram utilizados 12 coelhos, machos, adultos, distribuídos aleatoriamente em dois grupos, denominados de G1: mensuração da PIC com cateter de ventriculostomia (n=6) e G2: mensuração com sonda uretral (n=6). Foram realizadas duas craniotomias na região parietal direita e esquerda para a implantação do cateter de ventriculostomia ou sonda uretral flexível e o balão epidural, respectivamente. A PAM, a PPC, a FC, a FR e a TR foram mensurados antes e após...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cateter de ventriculostomia; Autorregulação; Neurologia; Cirurgia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601551

Efeito da suplementação parenteral extra de cobre e zinco sobre a resposta imunológica de vacas Nelore
Provedor de dados: 45
Autores: Silva,J.S.; Zanetti,M.A.; Carvalho,R.S.B.; Macedo,S.N.; Calviello,R.F.; Santana,R.S.S.; Barreto,R.S.N.
RESUMO O objetivo deste estudo foi avaliar o efeito da suplementação mineral injetável extra de cobre (Cu) e zinco (Zn) sobre a resposta imunológica de vacas Nelore no período pré-parto. Foram avaliadas 60 vacas prenhes, as quais foram divididas em dois tratamentos, por meio da distribuição aleatória em delineamento inteiramente ao acaso. Aos 75 dias antes do parto, as vacas do tratamento testemunha (T) receberam soro fisiológico como placebo e os animais suplementados (S) receberam mineral injetável via subcutânea (75mg de cobre e 250mg de zinco, em dose única). Foram realizadas três coletas de sangue, duas antes da data prevista para o parto (75 e 10 dias) e uma 30 dias após o parto. Os teores de Cu, Zn, ceruloplasmina, imunoglobulinas G (IgG) e M (IgM)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atividade fagocitária; Imunoglobulinas; Minerais.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400870

Comparison of sexual performance and testicular characteristics of melatonin treated Kivircik and Charollais rams during the non-breeding season
Provedor de dados: 45
Autores: Cevik,M.; Yilmazer,C.; Kocyigit,A.
ABSTRACT This study was conducted to investigate the effects of melatonin implantation on basic testicular characteristics and reproductive performance of Kivircik and Charollais rams and ewes during the non-breeding season. In this study, 8 Kivircik and 6 Charollais rams were used. Rams were implanted with 54 mg melatonin according to the manufacturer's instructions. At melatonin implantation and at ram introduction the reproductive performance and testicular characteristics were evaluated. Throughout the experimental period, rams were permanently kept outdoors under conditions of natural day length and at ambient temperature. The effects of exogenous melatonin treatments on the reproductive performances of rams and ewes, estrus response, pregnancy rate,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ram; Melatonin; Fertility; Non-breeding season.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200278

Insulinoma canino: relato de caso
Provedor de dados: 45
Autores: Padovani,L.; Silva,D.D.; Moreira,J.R.; Cardoso,M.J.L.; Santis,G.W. Di; Zanutto,M.S.
RESUMO O insulinoma é um tumor das células β do pâncreas, que têm a função de produzir e secretar insulina e, geralmente são malignos em cães. O presente trabalho descreve o diagnóstico e o manejo terapêutico de três casos de insulinoma. Os sinais clínicos dos animais relatados variaram de acordo com a severidade e a duração da hipoglicemia. O diagnóstico presuntivo se deu através dos sinais clínicos e da dosagem de insulina sérica no momento de mais intensa hipoglicemia e, o diagnóstico definitivo foi obtido por meio de exame histopatológico nos três casos relatados. O tratamento realizado variou de acordo com a intensidade dos sinais clínicos.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tumor; Células β; Hipoglicemia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601466

Associação de plasma sanguíneo ao tratamento de envenenamento botrópico em equino: relato de caso
Provedor de dados: 45
Autores: Camplesi,A.C.; Rivera,G.G.; Bonacin,Y.S.; Paula,V.B.; Lacerda Neto,J.C.; Moya-Araujo,C.F.
RESUMO O presente trabalho tem por objetivo relatar um caso de envenenamento botrópico em um equino, fêmea, seis anos de idade, da raça Quarto de Milha, pesando 460kg, que foi atendido no hospital veterinário da FCAV/Unesp, Campus de Jaboticabal, SP. No exame clínico, observou-se aumento bilateral de narina, com extrema sensibilidade ao toque, presença das marcas da presa da serpente na região rostral de focinho, mucosas róseas com petéquias. No exame de sangue, pôde-se detectar alteração no tempo de coagulação sanguínea (&gt;30 minutos). O animal permaneceu internado, sendo instituída a seguinte terapia: soro antiofídico polivalente, transfusão de plasma sanguíneo equino, fluidoterapia intensa, flunixin meglumine e sulfa associado ao trimetoprim. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bothrops; Acidente ofídico; Terapêutica.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400815

Caracterização histomorfológica do sistema tegumentar auricular de cateto - Pecari tajacu Linnaeus, 1758)
Provedor de dados: 45
Autores: Borges,A.A.; Bezerra,F.V.F.; Costa,F.N; Neta,L.B. Queiroz; Santos,M.V.O.; Oliveira,M.F.; Silva,A.R.; Pereira,A.F.
RESUMO A criopreservação de tecido somático derivado da pele de catetos consiste numa alternativa para a conservação da biodiversidade por meio da associação com a transferência nuclear. Nesse contexto, a manipulação de tecidos da pele é uma etapa crucial para o sucesso dessa biotécnica. Portanto, o objetivo do presente estudo, foi caracterizar o sistema tegumentar auricular periférico de catetos, visando aprimorar a conservação tecidual. Para tanto, fragmentos auriculares de oito animais foram avaliados quanto às camadas teciduais, aos componentes, à atividade proliferativa e à viabilidade metabólica, usando-se as colorações hematoxilina-eosina e tricrômico de Gomori, quantificação de AgNORs e microscopia eletrônica de transmissão. Assim, tamanhos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animais silvestres; Avaliação histológica; Quantificação celular.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400948

Produção de novilhos castrados ou não castrados terminados em confinamento em idade jovem ou superjovem
Provedor de dados: 45
Autores: Cullmann,J.R.; Kuss,F.; Moletta,J.L.; Lançanova,J.A.C.; Silveira,M.F.; Menezes,L.F.G.; Moura,I.C.F.; Strack,M.
RESUMO Avaliaram-se o desempenho produtivo e o rendimento de cortes comercias da carcaça de animais castrados ou não castrados terminados em confinamento e abatidos em idade jovem ou superjovem, alimentados com uma dieta contendo 11,2% de proteína bruta e 3,07Mcal de energia digestível/kg de matéria seca, composta de 50% de volumoso e 50% de concentrado. A idade no início do confinamento dos animais superjovens e jovens foi de nove e 22 meses, respectivamente. Maior PF foi observado para os animais jovens não castrados. O GMD foi 31% superior em favor dos novilhos jovens em relação aos superjovens. O CMS foi 27% superior para os novilhos jovens sobre os superjovens, e os novilhos não castrados consumiram 9% mais kg de matéria seca quando comparados aos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canchim; Conversão alimentar; Cortes comerciais; Ganho de peso; Purunã.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100155

Morte súbita causada por ruptura de aneurisma em aorta em ruminantes
Provedor de dados: 45
Autores: Souto,E.P.F.; Leite,A.V.L.; Frade,M.T.S.; Olinda,R.G.; Nobre,V.M.T.; Miranda Neto,E.G.; Riet-Correa,F.; Dantas,A.F.M.
RESUMO De um total de 2.088 ruminantes necropsiados no Laboratório de Patologia Animal da Universidade Federal de Campina Grande durante o período de janeiro de 2003 a dezembro de 2015, 803 (38,45%) eram bovinos, 651 (31,18%) ovinos e 634 (30,37%) caprinos. Desses, dois caprinos (0,31%), um ovino (0,15%) e um bovino (0,12%) foram diagnosticados com ruptura de artéria aorta devido à presença de aneurismas, correspondendo a 0,19% das causas de morte em ruminantes. O caso 1 ocorreu em um caprino que apresentava bom estado corporal e foi encontrado morto pelo proprietário; o caso 2, em um caprino com diagnóstico clínico presuntivo de linfadenite caseosa; o caso 3, em um ovino que foi encontrado morto pelo proprietário; e o caso 4, em um bovino com histórico de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Doenças de ruminantes; Lesão vascular; Hemorragia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200398

Peritonite encapsulante esclerosante em cão (Canis familiaris): relato de caso
Provedor de dados: 45
Autores: Santos,A.S.O.; Lemos,L.S.; Viestel,M.A.D.; Rodrigues,A.B.F.; Almeida,L.G.; Carvalho,E.C.Q.
RESUMO Um cão SRD, com cinco anos e histórico de ascite de evolução lenta com estruturas palpáveis foi submetido a exames clínicos, os quais foram inconclusivos. A laparotomia exploratória revelou que a cavidade abdominal estava repleta de líquido serossanguinolento e de múltiplos nódulos de diferentes tamanhos, com superfície irregular, aderidos aos peritônios visceral e parietal, sugestivos de neoplasia maligna. A eutanásia, seguida da necropsia para a coleta de amostras para o diagnóstico histopatológico, foi indicada. O exame anatomopatológico revelou nódulos sésseis e resistentes ao corte, constituídos de tecido conjuntivo fibroso e trabéculas ósseas em arranjo de osso esponjoso e osteoclastos em atividade. O diagnóstico definitivo foi peritonite...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Histopatologia; Peritonite; Fluido serossanguinolento.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501203

Avaliação clínica de ovinos após a ingestão de elevada quantidade de manga
Provedor de dados: 45
Autores: Soares,G.W.N.; Lima,P.R.; Oliveira,A.S.; Lucena,A.R.F.; Silva Nascimento,J.C.; Matos,J.C.; Amorim,J.R.; Menezes,D.R.; Antonelli,A.C.
RESUMO Objetivou-se avaliar clinicamente os efeitos da administração intrarruminal de duas quantidades distintas de manga em ovinos. Foram utilizados sete ovinos machos, hígidos, que não receberam carboidratos não fibrosos por, pelo menos, seis meses previamente ao período experimental, quando se avaliou pH ruminal, total de protozoários no suco de rúmen, pH urinário, pH sanguíneo estimado e parâmetros vitais nos tempos zero, 12, 16, 20 e 24 após a administração da manga. Os sete ovinos foram distribuídos aleatoriamente em dois grupos e receberam 0,625% ou 1,875% da MS de manga/kg/PV (M1 e M2, respectivamente), distribuídos em delineamento cross-over, com uma parcela perdida, e 30 dias de washout. Os ovinos M2 apresentaram valores médios para pH ruminal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acidose; Rúmen; Manga; Pequenos ruminantes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501155

Staphylococcus sciuri associated to subcutaneous abscess and dermatitis in ICR mouse
Provedor de dados: 45
Autores: Kengkoom,K.; Ampawong,S.
ABSTRACT Subcutaneous mass was found in ICR mouse during daily health observation in the breeding colony of the National Laboratory Animal Center, Mahidol University, Thailand. The animal was subsequently culled and humanely sacrificed due to the institutional preventive medicine policy. Microbiological and histopathological studies were performed for definitive diagnosis. The results described that the case was subcutaneous abscess and chronic dermatitis in association with Staphylococcus sciuri infection without epizootic and mortality. This was determined as the first reported case in Thailand occurring in mouse. Reproductive stress and abrasion skin wound may be the predisposing factors. Although pathogenic staphylococci in laboratory animals are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatitis; ICR mouse; Staphylococcus sciuri; Subcutaneous abscess.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100117

Retrospective study of ocular complication following phacoemulsification with intraocular acrylic lens implantation in dogs
Provedor de dados: 45
Autores: Guimarães,T.G.; Honsho,C.S.; Mamede,F.V.; Dias,F.G.G.; Anjos,D.S.; Pereira,L.F.; Ricordi,I.; Jorge,A.T.
ABSTRACT The aim of this study was to analyze for 120 days, post-operative complications following bimanual phacoemulsification with implantation of hydrophilic or hydrophobic intraocular acrylic lens. The hospital records of 15 dogs were analyzed, and distributed in two groups, being Gfi and Gfo the hydrophilic intraocular lens and hydrophobic intraocular lens group, respectively. On the first day, both groups presented blepharospasm, conjunctival hyperemia and flare. On day 1, fibrin was slightly apparent in two and three eyes of Gfi and Gfo, and on day 7, present in one and two patients from Gfi and Gfo. Synechia was observed on day 1 in one eye from Gfi and Gfo. Two eyes from Gfi developed from 7 to 120 days, and in Gfo, one eye developed from 7 to 90...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cataract; Phakectomy; Hydrophilic lens; Hydrophobic lens.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400915

Ovarian radiographic and direct measurements of Japanese Quail ( Coturnix coturnix japonica ) submitted to light restriction
Provedor de dados: 45
Autores: Albuquerque,M.; Guedes,R.; Dornbusch,P.; Laskoski,L.; Mangini,P.; Lange,R.
ABSTRACT Often, in pet birds, any stimulus to lay eggs is unwanted in order to reduce reproductive diseases and disorders. The objectives of this study were: to determine the time necessary to promote ovary involution after an eight hour photoperiod using laying Japanese quails (Coturnix coturnix japonica); to connect the ovarian radiographic measurements with egg production; and to compare these measurements with direct ovary data obtained at necropsy. Birds were separated into three groups: 12h/24d (control group - 12h photoperiod for 24 days), 8h/24d and 8h/36d (8h photoperiod for 24 and 36 days). After euthanasia, all cadavers were x-rayed to measure ovary length and height. Birds were necropsied to measure ovarian length and weight. Results:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian; Photoperiod; Gonad; Laying; Radiography.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300651

Attributable risk of Capillaria species in domestic pigeons (Columba livia domestica)
Provedor de dados: 45
Autores: Qamar,M.F.; Butt,A.; Ehtisham-ul-Haque,S.; Zaman,M.A.
ABSTRACT Fecal samples were collected from 120 domestic pigeons to determine the Attributable risk of Capillaria spp. The Capillaria spp. was observed in 64 out of 120 (51%) pigeons (70 males and 50 females) under this study. A total of 64 (39 males and 25 females) were found naturally infected with Capillaria spp. with infection percentage of 51% and 50% in males and females respectively. Qualitative examinations include the direct microscopy and faecal floatation while quantitative examination includes McMaster technique (worms load was calculated per gram of the faeces). Month wise Attributable risk showed that eggs of the worms were found to be abundant in the month of July during the present study (60% to 73%) because of high humidity. Very high and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Attributable risk; Capillaria species; Pigeons; Pakistan.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501172

Evaluation of the cryosurgery for treatment of squamous cell carcinoma in cats
Provedor de dados: 45
Autores: Prado,L.O.C.; Rossetto,V.J.V.; Carvalho,L.M.C.R.; Ferreira,A.P.; Matsubara,L.M.; Rodrigues,J.C.Z.; Brandão,C.V.S.
ABSTRACT The cryosurgery is a very useful therapy for the treatment of a variety of neoplastic and non-neoplastic processes. Nevertheless, it is still poorly described as an option for the treatment of specific cutaneous neoplasms, such as squamous cell carcinoma. The purpose of the present study was to analyze the clinical response of cryosurgery for the treatment of squamous cell carcinoma in cats. For this 13 squamous cell carcinoma lesions were selected in 11 cats, diagnosed through citopathological and/or histopathological examinations. The lesions were frozen using liquid nitrogen spray, and the evaluations were performed in the moment of freeze and approximately every 15 days until the wound was completely healed. The response of cryosurgery was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epidermoid carcinoma; Freezing; Skin neoplasms.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400877

Comportamento ingestivo e parâmetros sanguíneos em ovinos que receberam dietas contendo aditivos à base de extratos de própolis em pó
Provedor de dados: 45
Autores: Prado-Calixto,O.P.; Mizubuti,I.Y.; Ribeiro,E.L. A.; Pereira,E.S.; Silva,R.T.; Corletto,N.L.; Peixoto,E.L.T.; Carvalho,L.N.; Nihei,A.K.; Massaro Júnior,F.L.; Silva,L.D.F.; Galbeiro,S.
RESUMO Objetivou-se avaliar os efeitos do extrato de própolis (LLOSC2) sobre o comportamento ingestivo e os parâmetros sanguíneos em cordeiros alimentados com dieta concentrada. Foram utilizados quatro cordeiros machos, castrados, sem raça definida e com peso médio inicial de 32±1,92kg, mantidos em gaiolas metabólicas individuais durante todo o período experimental. O delineamento experimental foi em quadrado latino 4x4, com quatro animais, quatro dietas e quatro períodos experimentais. As dietas diferiram em relação à adição ou não de extratos de própolis à ração. As dietas testadas diferiam na adição de zero (controle), 1(88,16mg/g de flavonoides), duas (176,32mg/g de flavonoides) ou três (264,48mg/g de flavonoides) doses de aditivo à base de extrato de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cortisol; Parâmetros hematológicos; Parâmetros imunológicos; Perfil bioquímico; Ruminação.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200381

Bone marrow bi-hypoplasia in a dog with a sertoli cell tumor
Provedor de dados: 45
Autores: Valente,P.C.L.G.; Couto,R.M.; Gamba,C.O.; Vasconcelos,A.V.; Leme,F.O.P.; Ecco,R.; Paes,P.R.O.
ABSTRACT A 20-year-old unneutered male poodle presented prostration, apathy, staggering gait, lack of appetite and tick infestation. The dog was diagnosed with a Sertoli cell tumor in an undescended testicle by cytological, histopathological and immunohistochemical tests. Pancytopenia with moderate nonregenerative anemia, leukopenia and severe thrombocytopenia were detected in the complete blood count. Cytological and histopathological evaluation of the bone marrow revealed a cellularity of 30%, with erythroid (59%), lymphoid (40%) and mast cells (1%), and an absence of granulocytic, monocytic and megakaryocytic lineage cells. In post-mortem examinations, changes related to hemostatic disorders were found. The absence of microorganisms in molecular tests...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Hyperestrogenism; Pancytopenia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100095

Efeito de vitaminas adicionadas ao diluente ACP-104 sobre a qualidade do sêmen criopreservado de carpa comum - Cyprinus carpio )
Provedor de dados: 45
Autores: Linhares,F.R.A.; Oliveira-Araújo,M.S.; Nunes,J.F.; Carvalho,M.A.M.; Campello,C.C.; Salmito-Vanderley,C.S.B.
RESUMO O objetivo da presente pesquisa foi alcançado com a divisão da pesquisa em dois experimentos: (1) aperfeiçoar o protocolo de congelação utilizando água de coco em pó (ACP-104) como diluente para a criopreservação seminal de carpa comum; (2) avaliar o efeito da suplementação das vitaminas C (ácido ascórbico) ou E (α-tocoferol) sobre os melhores diluidores testados no experimento 1 na qualidade do sêmen pós-descongelado da espécie. Para o experimento 1, foram formados oito pools de sêmen, provenientes de 14 machos selecionados. As amostras seminais coletadas foram avaliadas quanto à motilidade total, à velocidade, ao percentual de espermatozoides normais e à vitalidade espermática antes e depois da criopreservação seminal. Esta foi realizada em meio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyprinus carpio; Sêmen; Criopreservação; Antioxidantes; ACP-104.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400980

Imunogenicidade da proteína M recombinante de Streptococcus equi subsp. equi coadministrada com um adjuvante molecular
Provedor de dados: 45
Autores: Maciel,L.F.; Magalhães,C.G.; Moraes,C.M.; Rosa,M.C.; Mendonça,M.; Moreira,A.N.; Dummer,L.A.; Finger,P.F.; Ferreira,M.R.A.; Leite,F.P.L.; Conceição,F.R.
ABSTRACT The strangles is an infectious disease that affects horses from all ages and causes important economic losses in the equine-related business. The aim of this work was to evaluate the immunogenicity of the recombinant M protein from Streptococcus equi (rSeM) co-administered with the recombinant heat-labile enterotoxin B subunit from Escherichia coli (rLTB) in mice and horses. A total of 72 female Balb-c mice were divided into eight groups and 18 horses were divided into six groups. The animals were inoculated by intramuscular (IM) or intranasal (IN) routes with different treatments of rSeM, rLTB and/or Al(OH)3. The results obtained in both species, independent of administration routes, demonstrated that rSeM + rLTB had higher levels of specific...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Garrotilho; Streptococcus equi; RSeM e rLTB.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501351

Metabolizabilidade da energia de farinhas mistas contendo silagem de peixes para frangos de corte
Provedor de dados: 45
Autores: Cunha,G.T.G.; Ludke,M.C.M.M.; Ludke,J.V.; Rabello,C.B.V.; Barros,J.S.; Santos,J.S.
RESUMO Objetivou-se com este trabalho determinar o valor nutricional e os valores de energia metabolizável aparente (EMA) e EMA corrigida para o balanço de nitrogênio (EMAn) de quatro farinhas mistas contendo silagem de resíduo de filetagem de tilápia para frangos de corte do tipo crescimento lento com 28 a 38 dias de idade. Analisou-se a composição físico-química das silagens e, em seguida, realizou-se um ensaio de metabolismo pelo método de coleta total de excretas com 180 pintos machos da linhagem Vermelho Pesadão Francês, distribuídos em um delineamento inteiramente ao acaso, com cinco tratamentos, seis repetições e seis aves por unidade experimental. Os tratamentos consistiram de uma ração referência (RR) e quatro dietas teste compostas de 70% da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alimento alternativo; Aves; Casca de mandioca; Energia metabolizável; Farelo de algaroba.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300704

Epitelização de enxertos cutâneos em feridas recentes de coelhos tratados com membrana amniótica canina e/ou laserterapia
Provedor de dados: 45
Autores: Reis Filho,N.; Ferreira,M.; Pascoli,A.; Viéra,R.; Pazzini,J.; Oliveira,R.; Salardani,I.; Silva,P.; Rosseto,L.; Albernaz,S.; Vasconcelos,R.O.; Ferraudo,A.; Moraes,P.C.; Nardi,A.
RESUMO A enxertia cutânea é uma técnica cirúrgica simples e bastante útil para o reparo de feridas, principalmente aquelas onde existe dificuldade da aplicação do fechamento primário ou de outras técnicas reconstrutivas. Entretanto, para a sobrevivência do enxerto, é necessário que o leito da ferida esteja saudável e com presença de tecido de granulação exuberante. O objetivo do presente trabalho foi avaliar a aplicação da membrana amniótica e da laserterapia como potenciais estimulantes da cicatrização em enxertos aplicados em feridas sem tecido de granulação. Foram utilizados 42 coelhos, divididos em quatro grupos: grupo controle (GC), grupo membrana (GM), grupo laser (GL) e grupo membrana e laser (GML), submetidos a avaliações macro e microscópicas. Na...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epitelização; Enxerto cutâneo; Laserterapia; Membrana amniótica.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300603

Acompanhamento eletrocardiográfico no desenvolvimento de ratos Wistar
Provedor de dados: 45
Autores: Pezolato,V.A.; Mascarin,A.L.; Ferreira,R.B.; Dias,R.; Silva,C.A.
RESUMO A atividade elétrica cardíaca pode ser registrada por meio do eletrocardiograma (ECG), registro capaz de captar as alterações do percurso elétrico. Na literatura científica, não existe descrição de padrões eletrocardiográficos de ratos Wistar desde a fase de recém-nascidos até serem considerados envelhecidos. O objetivo do presente estudo foi avaliar o padrão eletrocardiográfico de ratos Wistar desde a fase de recém-nascidos até serem considerados envelhecidos, no intuito de que os resultados possam contribuir como referencial dos padrões da espécie. Foram utilizados ratos Rattus novergicus albinus, da linhagem Wistar. Os ratos foram divididos em cinco grupos experimentais, sendo definidos de acordo com a idade e assim denominados: grupo 21 dias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eletrocardiograma; ECG; Ratos; Envelhecimento.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100039

Intraventricular pneumocephalus associated with nasocephalic necrosis in a puppy: a case report
Provedor de dados: 45
Autores: Sena,J.O.; Costa,K.C.R.; Costa,P.M.; Miranda,F.G.; Silva,J.F.; Tôrres,R.C.S.
ABSTRACT Pneumocephalus is defined as the presence of air in any of the intracranial compartments. Its most frequent causes are trauma and cranial surgery. Clinical signs occur as a result of increased intracranial pressure and vary with the location and extent of the lesion. A case involving a seven-month-old female Saint Bernard, who suffered cranial trauma caused by a bite to the face at ten days of age and had presented with seizures and localized pain four months previously is reported. A computed tomography scan of the skull revealed a nasocephalic mass with low contrast enhancement, bone lysis, and hypodensity (-940 Hounsfield units) of the lateral and third ventricles, indicating intraventricular pneumocephalus. During surgery, a fragment of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Computed tomography; Intracerebral aerocele; Pneumoventricle.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200333

Produtividade de genótipos de trigo duplo propósito submetidos ao pastejo com vacas em lactação
Provedor de dados: 45
Autores: Quatrin,M.P.; Olivo,C.J.; Meinerz,G.R.; Fontaneli,R.S.; Aguirre,P.F.; Seibt,D.C.; Aires,J.F.; Falk,D.R.; Sauter,C.P.; Silva,A.R.
RESUMO Esta pesquisa foi conduzida com o objetivo de avaliar a produtividade de dois genótipos de trigo de duplo propósito, BRS Tarumã e BRS Umbu, submetidos ao pastejo com vacas em lactação. O delineamento experimental foi o inteiramente ao acaso, com dois tratamentos (genótipos), três repetições (piquetes) e medidas repetidas no tempo (pastejos). Avaliaram-se a precocidade, a composição estrutural dos trigos, as produções de forragem e de biomassa de lâminas foliares, as taxas de acúmulo diário de forragem e de lâminas foliares, a taxa de lotação, as ofertas de forragem e de lâminas foliares, a eficiência de pastejo, o consumo aparente e a produção de grãos. O trigo mais precoce para produção de forragem foi o BRS Umbu. Houve diferença para a produção de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cereais de inverno; Forragem; Grãos; Triticum aestivum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601615

Escherichia coli and Salmonella ser. Saintpaul natural co-infection in a free-living ruddy ground dove (Columbina talpacoti): a case report
Provedor de dados: 45
Autores: Bezerra,W.G.A.; Horn,R.V.; Silva,I.N.G.; Siqueira,R.A.S.; Lucena,R.B.; Havt,A.; Medeiros,P.H.Q.S.; Maciel,W.C.
ABSTRACT This study reports a co-infection of Escherichia coli and Salmonella in a free-living ruddy ground dove (Columbina talpacoti) received at the Laboratory of Ornithological Studies of the State University of Ceará, Brazil. The bird presented diarrhea, leg paralysis and anorexia, and died shortly after. Necropsy was then performed and samples from lung, kidney, liver and intestine were collected for microbiological and histopathological analyses. Escherichia coli was isolated from cloacal swab, lung and kidney samples. Salmonella ser. Saintpaul was identified in liver and spleen samples. Escherichia coli isolates were tested for the presence of eight diagnostic genes for diarrheagenic pathotypes (STEC, ETEC, EPEC, EIEC, EAEC) with conventional...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colibacillosis; Salmonellosis; Antimicrobial Resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501236

Utilização da técnica in vitro semiautomática de produção de gases na avaliação da fermentação microbiana do ceco de suínos
Provedor de dados: 45
Autores: Silva Júnior,C.A.; Cabral Filho,S.L.S.; Silva,F.L.; Silva,K.M.; Cabral,A.R.R.; Braga,T.F.; Costa,F.N.G.; Navarro,R.D.; Murata,L.S.
RESUMO O presente estudo teve como objetivo avaliar o os padrões de fermentação microbiana do ceco de suínos, utilizando-se um modelo aplicado na técnica in vitro de produção de gases para ruminantes. Três tipos de inóculo foram utilizados: ceco de suínos criados ao ar livre (CSF), ceco de suínos criados confinados (CSC) e líquido ruminal de bovino (LRB). Os substratos utilizados derivaram de uma dieta de suínos à base de farelo de soja e de grãos de milho, atendendo as exigências nutricionais dos suínos. Para composição dos substratos, foram estabelecidos diferentes níveis de substituição da dieta basal pela torta da amêndoa da Acrocomia aculeata (AA), coproduto da produção do biodiesel, sendo: BAS - 100% de dieta basal; M10 - 90% de dieta basal e 10% AA;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alimentos alternativos; Fibra dietética; Potencial fermentativo.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100252

Ultrasonography and theloscopy for the diagnosis of obstructive fibrosis in the Fürstenberg venous ring in the four quarters of the udder of a cow: a case report
Provedor de dados: 45
Autores: Miranda,F.G.; Cabala,R.W.; Lima,J.A.M.; Nepomuceno,A.C.; Tôrres,R.C.S.; Gheller,V.A.
ABSTRACT We report an unusual case of obstructive fibrosis of the venous ring of Fürstenberg in all four quarters of the udder of a cow of the Girolando breed (3/8 Gir and 5/8 Dutch). The information was obtained through a review of medical records, anamnesis, and imaging methods such as theloscopy and ultrasonography. Histopathological analysis provided a definitive diagnosis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Girolando; Teats; Endoscopy; Ultrasound.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501125

Applicability of PCR-based clonality assay in dogs with multicentric lymphoma
Provedor de dados: 45
Autores: Nowosh,V.; Macieira,D.B.; Alencar,N.X.
RESUMO Linfoma multicêntrico apresenta alta prevalência dentre as neoplasias em cães, e o diagnóstico rotineiro não é eficaz para avaliação de prognóstico. A PCR para rearranjos de receptores de antígeno (PRRA) apresenta potencial para classificação e estadiamento de linfomas. Este trabalho objetiva relatar o desenvolvimento de um protocolo de PRRA para aplicação em cães, baseando-se em condições e primers descritos na literatura. Foram coletados aspirados de linfonodo de 10 cães com linfoma multicêntrico e 15 lâminas de linfonodo positivas para linfoma já secas ao ar, fixadas e coradas. O protocolo utilizado demonstrou-se eficaz na amplificação de DNA das amostras frescas e das lâminas, com sensibilidade de 75%, similar à de estudos anteriores. Resultados...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Receptor IgH; Diagnóstico molecular; Ensaio de PRRA; Receptor TCR-gama.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300761

Metabolism of broilers subjected to different lairage times at the abattoir and its relationship with broiler meat quality
Provedor de dados: 45
Autores: Rodrigues,D.R.; Café,M.B.; Jardim Filho,R.M.; Oliveira,E.; Trentin,T.C.; Martins,D.B.; Minafra,C.S.
ABSTRACT An investigation was made into the effects of different lairage times and the position of chicken crates during transport to the slaughterhouse on the biochemical and hematological profile and physical parameters of broilers, such as color and pH of their breast meat. The treatments were defined by the animals slaughtered after 0, 2, 4 and 6 hours of lairage time at the slaughterhouse, transported in crates located in the top and bottom layers of the truck. It was found that increasing the lairage time at the slaughterhouse to over two hours reduced the number of lymphocytes and increased the heterophil/lymphocyte (H/L) ratio and the basophil count in the hemogram. In addition, lactate dehydrogenase (LDH) activity and cholesterol levels increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; DFD meat; Fasting; Holding sheds; Pre-slaughter.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300733

Caprine lentivirus in sheep milk and semen
Provedor de dados: 45
Autores: Lima,C.C.V.; Ayres,M.C.C.; Pinheiro,R.R.; Costa,J.N.; Andrioli,A.; Souza,T.S.; Azevedo,D.A.A.; Santos,V.W.S.; Araújo,J.F.; Sousa,A.L.M.; Peixoto,R.M.; Damasceno,E.M.; Costa Neto,A.O.
ABSTRACT With the objective of detecting the presence of caprine lentivirus (CLV) in ewe milk and in ram semen, ten matrixes and four reproducers experimentally infected with CLV were used. Samples of ewe milk were collected during the four months of lactation, five collections per animal, totaling 50 samples. Regarding the rams, eight semen collections were made per animal, during one year of experimentation, totaling 32 samples. The milk and semen samples were submitted to DNA extraction and the nested polymerase chain reaction test (nPCR) to detect CLV proviral DNA. Eight (16%) of the milk samples were positive in nPCR originating from two ewes. Only one (3.12%) semen sample was positive. The amplification products were sequenced, and were confirmed to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lentiviruses; Transmission; Cross infection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200391

The first report of massive infestation with Lipoptena Cervi ( Diptera: Hippoboscidae ) in Roe Deer ( Capreolus Capreolus ) in Iasi county, N-E of Romania
Provedor de dados: 45
Autores: Lazăr,M.; Iacob,O.C.; Solcan,C.; Pașca,S.A.; Lazăr,R.; Boișteanu,P.C.
ABSTRACT Investigations of four roe deer corpses were carried out from May until October 2014, in the Veterinary Forensic Laboratory and in the Parasitic Diseases Clinic, in the Iasi Faculty of Veterinary Medicine. The roe deer were harvested by shooting during the trophy hunting season. The clinical examination of the shot specimens revealed the presence of a highly consistent number of extremely mobile apterous insects, spread on the face, head, neck, lateral body parts, abdominal regions, inguinal, perianal and, finally, all over the body. The corpses presented weakening, anemia and cutaneous modification conditions. Several dozen insects were prelevated in a glass recipient and preserved in 70º alcoholic solution in order to identify the ectoparasite...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Roe deer; Lipoptena cervi; SEM; Histopathology; Iasi county.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200293

Epitheliotropic lymphoma with heart and kidney metastasis in a dog: case report
Provedor de dados: 45
Autores: Araújo,C.M.T.D.; Pacheco,B.D.; Castro,J.L.C.; Farias,M.R.; Engracia Filho,J.R.
ABSTRACT A female adult dog, with a four-month history of pain and intense pruritus, which eventually resulted in sudden death, was referred for necropsy. Postmortem examination showed thoracic and abdominal serum-sanguineous exudates, multifocal infiltrative renal masses, and similar tumors in the heart. Histopathology revealed midsize infiltrative neoplastic proliferation composed of round cells, sparse cytoplasm, and large hyperchromatic nuclei. Immunohistochemistry revealed CD3+ and CD20-immunoexpression. Histopathological and immunohistochemical findings confirmed the diagnosis of epitheliotropic lymphoma with cardiac and renal metastasis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metastasis; Lymphoma; Cutaneous; Canine; Necropsy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601461

Avaliação do fluxo de saída do ventrículo esquerdo em gatos anestesiados submetidos ao pneumoperitônio e à posição deTrendelenburg
Provedor de dados: 45
Autores: Magalhães,M.L.; Nishimura,L.T.; Souza,A.T.; Magalhães,C.F.; Mattos Júnior,E.; Honsho,C.S.; Paulino Júnior,D.
RESUMO Objetivou-se avaliar os efeitos do pneumoperitônio e da posição de Trendelenburg sobre o fluxo de saída do ventrículo esquerdo em gatos anestesiados. Quatorze gatos foram alocados aleatoriamente em dois grupos, ambos submetidos ao pneumoperitônio com 10mmHg de dióxido de carbono (CO2). No grupo controle (GC n=7), os animais foram submetidos apenas ao pneumoperitônio e, no grupo Trendelenburg (GTREN n=7), os animais foram colocados em cefalodeclive 20° após o pneumoperitônio. A indução anestésica foi realizada com isoflurano, utilizando-se caixa de indução. Posteriormente, os animais foram mantidos sob anestesia inalatória com o mesmo fármaco. Foram avaliados a velocidade do fluxo de saída do ventrículo esquerdo (VFSVE), os gradientes máximo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gato; CO2; Doppler; Fluxo de saída; Trendelenburg.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501139

Anatomia e segmentação pulmonar de tamanduá-bandeira (Myrmecophaga tridactyla - Linnaeus, 1758) de vida livre
Provedor de dados: 45
Autores: Giraldi,A.C.C.; Aires,L.P.N.; Rodrigues,R.F.; Cruvinel,T.M.A.; Melo,A.P.F.
RESUMO O presente trabalho utilizou oito pulmões de tamanduá-bandeira (Myrmecophaga tridactyla), jovens e adultos, de ambos os sexos, provenientes do Setor de Atendimento Clínico Cirúrgico de Animais Selvagens (SACCAS), do Hospital Veterinário "Dr. Halim Atique"( Unirp, localizado na cidade de São José do Rio Preto, estado de São Paulo. Os animais foram encaminhados ao Laboratório de Anatomia Veterinária, onde se procedeu à separação dos órgãos, à lavagem em água corrente e à retirada do excesso de sangue, para serem fixados em formol a 10%. Após a fixação dos pulmões, estes foram dissecados para identificar os segmentos. Os animais apresentaram lobação pulmonar à direita em cranial, médio, caudal e acessório, sendo o lobo cranial dividido em partes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tamanduá-bandeira; Pulmão; Segmentação.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100022

Plasminogen activator inhibitor 1 and Antipain preserve acrosome integrity of bovine spermatozoa during cryopreservation
Provedor de dados: 45
Autores: Castelo Branco,M.A.; Castelo Branco,Y.N.T.C.; Moraes Junior,F.J.; Barros,F.N.; Barçante,F.P.S.; Carvalho,G.M.C.; Melo Evangelista,L.S.; Abreu-Silva,A.L.; Sousa Filho,M.A.; Souza,J.A.T.
ABSTRACT Seminal plasma contains serine proteases and serine protease inhibitor, which are involved in mammalian fertilization, and the inhibitors can be applied to prevent cold-induced sperm capacitation. The effects of different concentrations of two serine protease inhibitors were analyzed, Plasminogen activator inhibitor 1 - PAI-1 (70ƞg, 140ƞg and 210 ƞg) and Antipain (10µg, 50µg and 100µg) as supplementation to bovine semen cryopreservation extender. The effects of the inhibitors on the sperm parameters (sperm kinetics - CASA, acrosome integrity, plasma membrane integrity, mitochondrial membrane potential, sperm defects and acrosome reaction rate) were evaluated in the post-thaw semen. Cryopreservation of sperm with Antipain decreased post-thaw...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Curraleiro Pé-Duro; Fertility; Seminal evaluation; Serine protease inhibitors; Sperm cryopreservation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501114

Characterization of Staphylococcus spp. strains in milk from buffaloes with mastitis in Brazil: the need to identify to species level to avoid misidentification
Provedor de dados: 45
Autores: Coimbra-e-Souza,V.; Brito,M.A.V.P.; Chamon,R.C.; Laport,M.S.; Giambiagi-deMarval,M.
ABSTRACT Mastitis is an inflammation of the mammary gland that affects dairy cattle worldwide causing economic losses. Coagulase-negative staphylococci (CNS) are the predominant cause of this type of infection. We have recently showed that coagulase-positive staphylococci could be misidentified. So, the aim of this study was to characterize the Staphylococcus spp. strains initially classified as coagulase-negative Staphylococci, isolated from buffalo with subclinical mastitis. Milk of buffaloes with mastitis in herds was collected and 9 strains were identified as CNS by phenotypic tests. Molecular methodologies latter identified the strains as coagulase-negative Staphylococcus chromogenes (5), coagulase-positive Staphylococcus hyicus (2) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Buffalo; Mastitis; Staphylococcus; Milk; Coagulase test.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601669

Teofilina como agente capacitante do sêmen bovino
Provedor de dados: 45
Autores: Varago,F.C.; Silva,L.P.; Ribeiro,J.R.; Fernandes,C.A.; Carvalho,B.C.; Gioso,M. M.; Moustacas,V.S.
RESUMO Objetivou-se avaliar a teofilina como agente capacitante substituto ou associado à heparina sobre a reação acrossômica dos espermatozoides e o desenvolvimento de embriões produzidos in vitro. O experimento foi realizado com quatro touros e três tratamentos, totalizando 12 grupos experimentais. O sêmen dos touros foi avaliado nos tratamentos descritos a seguir: tratamento 1 (HEP): heparina - 10µg/mL; tratamento 2 (TEO): teofilina - 5mM; tratamento 3 (HEP + TEO): heparina (10µg/mL) + teofilina (5mM), por zero, seis, 12 e 18 horas, corados com trypan blue/Giemsa para avaliação da reação acrossômica. Para a produção dos embriões, os agentes capacitantes foram adicionados aos meios de fertilização. Na análise espermática, a taxa de reação acrossômica...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilização; Reação acrossômica; Espermatozoide; Metilxantinas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601607

Tratamento de um mastocitoma de alto grau na língua de um cão por meio de radioterapia e quimioterapia: relato de caso
Provedor de dados: 45
Autores: Cunha,S.C.S.; Corgozinho,K.B.; Valga,S.; Ferreira,A.M.R.
RESUMO Um canino da raça Boxer, fêmea, de oito anos de idade, foi atendido com salivação, halitose e disfagia. No exame clínico, foi observada uma massa ulcerada no terço médio da língua medindo 3,5 x 4,0cm. A histopatologia e a imuno-histoquímica levaram ao diagnóstico de um mastocitoma de alto grau. O tratamento cirúrgico (glossectomia parcial) foi declinado pelo proprietário, sendo a radioterapia indicada em seu lugar. O protocolo radioterápico empregado foi 15 frações de 300cGy, realizadas cinco vezes por semana. O equipamento utilizado foi de ortovoltagem. A lesão neoplásica apresentou remissão clínica completa a partir da quarta sessão radioterápica. O único efeito colateral observado foi mucosite leve na região irradiada, que, entretanto, não levou...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canino; Oncologia; Radiação; Cavidade oral.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100101

Genotyping of Toxoplasma gondii isolates from naturally infected Gallus domesticus in Santa Catarina state, Brazil
Provedor de dados: 45
Autores: Trevisani,N.; Barros,L.D.; Vieira-Neto,A.; Sartor,A.A.; Souza,A.P.; Garcia,J.L.; Moura,A.B.
ABSTRACT Toxoplasmosis is a widespread zoonosis that can infect warm-blooded animals including birds and humans, and chickens are considered to be indicators of environmental contamination. In Brazil, Toxoplasma gondii has a non-clonal population structure composed of three lineages (I, II, and III), presenting high recombination, and resulting in wide genetic diversity. This study aimed to genetically characterize T. gondii isolates from naturally infected chickens (Gallus domesticus) in Santa Catarina state, southern Brazil region. Sera from 133 free-range chickens were analyzed by an immunofluorescence assay (IFA) to detect IgG antibodies against T. gondii. Brain and heart from 30 positive animals, based on IFA (≥ 1:64), were used to isolate the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxoplasma gondii; Gallus domesticus; Genotyping; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100139

Parâmetros comparativos de indicadores bioquímicos plasmáticos de duas populações de quatis (Nasua nasua - LINNAEUS, 1766 ) com e sem ação antrópica
Provedor de dados: 45
Autores: Riekehr Júnior,L.E.; Piau Júnior,R.; Gonçalves,D.D.; Kunz,R.O.; Cardeal,C.; Pachaly,J.R.; Cubas,Z. S.; Valle,L.G. E.
RESUMO Os quatis são mamíferos carnívoros da família Procyonidae, são animais onívoros, encontrados nas Américas do Norte, Central e Sul, sendo amplamente distribuídos no Brasil. O objetivo deste trabalho é analisar as alterações nos parâmetros sanguíneos de duas diferentes populações de quatis (Nasua nasua), da região oeste do Paraná, e avaliar a qualidade de vida e a interferência antrópica nos hábitos alimentares desses animais. A análise sorológica foi realizada em duas diferentes populações de quatis (Nasua nasua) que habitam duas unidades de conservação em regiões distintas no município de Foz do Iguaçu. Em uma das populações, foram visualizados cerca de cinquenta indivíduos, os quais se revelam em exposição direta aos seres humanos, e outra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Análises bioquímicas; Animais selvagens; Sanidade.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300659

A importância da qualidade da informação na predição de valores genéticos para características de crescimento em bovinos da raça Nelore
Provedor de dados: 45
Autores: Pereira,C.; Faria,C.U.; Lôbo,R.
RESUMO Objetivou-se avaliar a influência da qualidade da informação na predição de valores genéticos para características de crescimento em bovinos da raça Nelore. Foram utilizadas informações de fazendas participantes do Programa Nelore Brasil da Associação Nacional de Criadores e Pesquisadores, considerando-se dados zootécnicos obtidos entre 2012 e 2013. Foram analisadas as características de crescimento relacionadas aos pesos aos 120 (P120), 210 (P210), 365 (P365) e 450 (P450) dias de idade, sob diferentes cenários: inclusão de todas as informações de lote de manejo (cenário de referência) e inclusão aleatória de 90%, 70%, 50%, 30% e 0% das informações de lote de manejo dos animais com medidas fenotípicas. Os valores genéticos foram preditos mediante...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovino de corte; Dados zootécnicos; Lotes de manejo; Parâmetros genéticos.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200465

Mineral profile of crossbred F 1 Holstein x Gyr dairy cows during the transition period in summer and winter
Provedor de dados: 45
Autores: Moreira,T.F.; Facury Filho,E.J.; Costa,A.L.B.S.A.; Meneses,R.M.; Casagrande,F.P.; Leme,F.O.P.; Uribe,J.A.Z.; Carvalho,A.U.
ABSTRACT The transition period is often a great challenge for dairy cows and mineral imbalances are frequent. With the aim to better understand the mineral profile of F1 Holstein x Gyr dairy cows and their performances under the different conditions of summer and winter, we collected blood samples to measure calcium, magnesium and phosphorus. Samplings were performed during summer and winter, on 15 and 13 pluriparous F1 Holstein x Gyr dairy cows, respectively. Blood sampling started 4 weeks prior to the expected calving date until 30 days postpartum. The mean concentrations of all three minerals had a different pattern during the transition period in each season, representing the interaction time x season. Calcium concentration was lower in winter and more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypocalcemia; Hypomagnesemia; Milk fever; Hyperphosphatemia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000401013

Leiomiossarcoma gástrico associado a hérnia de hiato em cão da raça Shar-pei: relato de caso
Provedor de dados: 45
Autores: Prado,L.O.C.; Franco,G.G.; Legatti,E.; Ranzani,J.J.T.; Quitzan,J.G.; Siqueira,E.G.M.; Souza,J.A.L.; Minto,B.W.; Brandão,C.V.S.
RESUMO Os tumores do sistema digestório não são comuns na medicina veterinária e as neoplasias de estômago representam menos de 1% de todos os tumores malignos. O leiomiossarcoma é o segundo tumor que mais acomete o trato gastrointestinal de cães, com predisposição para as regiões de jejuno e ceco, mas qualquer porção pode ser afetada, desde o esôfago até o reto. O presente trabalho relata um caso em um canino da raça Shar-pei, macho, com 13 anos de idade e histórico de episódios eméticos pós- prandiais e emagrecimento progressivo havia oito meses. Após avaliação radiográfica e endoscópica, foi indicada intervenção cirúrgica e observada tumoração gástrica associada a hérnia de hiato. O diagnóstico de leiomiossarcoma gástrico foi estabelecido por meio de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cirurgia; Estômago; Oncologia; Tumor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100111

Cladosporium cladosporioides isolado de gato com carcinoma de células escamosas
Provedor de dados: 45
Autores: Jarrah,S.A.; Zanetti,C.C.; Maruyama,F.H.; Ito,A.T.H.; Rosa,J.M.A.; Colodel,E.M.; Lima,S.R.; Nakazato,L.; Dutra,V.
RESUMO Este relato descreve o caso do Cladosporium cladosporioides isolado de uma lesão periocular de um felino atendido no Hospital Veterinário da Universidade Federal de Mato Grosso, em Cuiabá. A principal queixa do proprietário era uma lesão periocular, com piora no decorrer do tempo, havia aproximadamente quatro meses. Foi descrita a tentativa de tratamento da lesão com anti-inflamatórios e antibióticos, sem sucesso. Na anamnese foi relatado que o animal tinha acesso à rua e a hábitos de caça e que não havia outros animais da casa com lesão semelhante. O animal foi submetido à biópsia e citologia para um diagnóstico mais preciso do caso. Um fragmento foi encaminhado para o Laboratório de Patologia Veterinária e outro para o de Microbiologia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Felino; Cladosporium cladosporioides; Lesão periocular.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200377

Cloprostenol administration in the first week postpartum reduces expression of oxytocin receptors in the endometrium in Holstein-Zebu cows
Provedor de dados: 45
Autores: Camargos,A.; Wohlres-Viana,S.; Costa,I.F.; Camargo,L.S.; Ferreira,J.C.; Ramos,A.A.; Oba,E.
ABSTRACT The present study investigated the hormonal profile and expression of prostaglandin F2α (PGF2α), oxytocin and estrogen receptors in uterine tissues of postpartum cows treated with cloprostenol. Twenty Holstein-Zebu crossbred cows were treated with saline solution (treatment CONT) or cloprostenol (treatment CLO), both administered two and five days postpartum. Blood samples were collected on days two, seven, 14, 21 and 28 postpartum for progesterone, PGF2α metabolite (PGFM) and estradiol determination, and endometrial biopsy was performed in order to quantify the expression of oxytocin receptor (OXTR), prostaglandin F receptor (PTGFR) and estrogen receptor 1 (ERS1) genes. In the CLO treatment, expression of OXTR was reduced (P&lt;0.05) but no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PTGFR; ESR1; Progesterone; Estradiol; RT-PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400821

Weight evaluation of Tabapuã cattle raised in northeastern Brazil using random-regression models
Provedor de dados: 45
Autores: Oliveira,M.R.; Azevêdo,D.M.; Malhado,C.; Pires,L.; Martins Filho,R.; Sousa Júnior,S.
ABSTRACT The objective of this study is to compare random-regression models used to describe changes in evaluation parameters for growth in Tabapuã bovine raised in the Northeast of Brazilian. The M4532-5 random-regression model was found to be best for estimating the variation and heritability of growth characteristics in the animals evaluated. Estimates of direct additive genetic variance increased with age, while the maternal additive genetic variance demonstrated growth from birth to up to nearly 420 days of age. The genetic correlations between the first four characteristics were positive with moderate to large ranges. The greatest genetic correlation was observed between birth weight and at 240 days of age (0.82). The phenotypic correlation between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Covariance functions; Growth curve; Legendre polynomials; Livestock.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200457

Influence of stocking density on growth performance and welfare of juvenile tilapia ( Oreochromis niloticus ) in cages
Provedor de dados: 45
Autores: Costa,Â.A.P.; Roubach,R.; Dallago,B.S.L.; Bueno,G.W.; McManus,C.; Bernal,F.E.M.
RESUMO A intensificação da produção de tilápias pode gerar implicações negativas sobre o desempenho e o bem-estar dos peixes. Assim, é essencial determinar a densidade correta para otimizar a produção. O objetivo deste estudo foi avaliar o desempenho e o bem-estar de tilápias-do-nilo (Oreochromis niloticus) juvenis, com peso inicial médio de 30g (± 2,70), criadas em três diferentes densidades de estocagem, em gaiolas de flutuação. Os peixes foram alimentados três vezes/dia, com ração contendo 32% de proteína bruta, durante 74 dias. O desenho experimental foi completamente ao acaso, com três tratamentos (250 peixes/m3, 350 peixes/m3 e 450 peixes/m3) e quatro réplicas. Os parâmetros físico-químicos da água foram monitorados durante o experimento. A elevação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Aquaculture; Biomass; Cortisol; Stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100243

Equine metabolic syndrome in Colombian creole horse: case report
Provedor de dados: 45
Autores: Castillo,C.A.; Jaramillo,C.; Loaiza,M.J.; Blanco,R.
ABSTRACT The equine metabolic syndrome is a condition that can be recognized because of obesity, insulin resistance and laminitis. Genetic factors could play a role in the occurrence of this syndrome. Certain breeds such as ponies (including the South American creole horses) have a lower sensibility to insulin and a higher prevalence of hyperinsulinemia. The environment and management conditions, such as overfeeding and lack of exercise are factors that bring a propensity for obesity. The adipose tissue works as an endocrine organ producing hormones (adipokines or adipocytokines) that affect the horse´s metabolism. The objective of this report is to describe the first case report of a Colombian creole mare with a metabolic syndrome, diagnosed by means of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equine; Insulin resistance; Obesity; Laminitis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501067

Measurements of femoral angles, femur length, and hip width in cat radiographs
Provedor de dados: 45
Autores: Fonseca,R.L.; Lobo-Jr,A.R.; Santana,M.I.S.
ABSTRACT Femoral angle, femur length, and hip width were measured in radiographs of 92 intact domestic cats, males and females of mixed breed from the Center for Zoonosis Control of the Federal District. The animals showed no trauma, orthopedic diseases or angular deformities and had closed physeal lines. Accordingly, we measured aLPFA (anatomical lateral proximal femoral angle, aLDFA (anatomical lateral distal femoral angle), mLPFA (mechanical lateral proximal femoral angle), mLDFA (mechanical lateral distal femoral angle), IA (femoral inclination angle), FL (femur length) and HW (hip width) using ventrodorsal radiographs, with both hindlimbs in a single exposure to an X-ray beam centered on the hip. The mean values of the variables were: mLPFA:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mixed-breed cats; Angles; Femur; Radiography; Corrective osteotomy; Angular deformity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601513

Influence of orchiectomy of seven month old bulls on bronchoalveolar immune function
Provedor de dados: 45
Autores: Bertagnon,H.G.; Batista,C.F.; Santos,B.P. dos; Lima,M.G.B.; Bellinazzi,J.B.; Libera,A.M.M.P. Della.
ABSTRACT The present study evaluated the impact that orchiectomy, a routine but painful intervention in bovine husbandry, can cause on pulmonary immunity. To identify whether orchiectomy can impair lung defense, analyses of serum cortisol concentration and of alveolar macrophage and their function (phagocytosis and respiratory burst) were evaluated. Sixteen Holstein bulls (7 mo old, 250±50kg of body weight BW) were divided in two homogeneous groups - the castrated group and the sham group - and the sample were collected on Days -7, 1 and 7 relative to the day of the procedure. Serum cortisol concentration statistically increased on Days 1 and 7 (D-7: 4,97±1,28ng/ml; D1: 6,35 ±1,10ng/ml; D7: 8,28±1,94ng/ml) after castration and these variables seem to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Cortisol; Innate immunity; Phagocytosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200310

Dermatite alérgica à picada de Culicoides em muar: relato de caso
Provedor de dados: 45
Autores: Silva,T.I.B.; Melchior,L.A.K.; Baptista Filho,L.C.F.; Fernandes,A.C.C.; Silva,L.G.; Vasconcelos,K.F.; Revorêdo,R.G.; Silva,D.D.; Melo,L.E.H.
RESUMO A dermatite alérgica à picada de ectoparasitos é uma enfermidade alergoparasitária bastante comum entre animais domésticos, sendo relatada principalmente em pequenos ruminantes e em animais de companhia. Contudo, a doença é pouco diagnosticada na clínica de equídeos devido a similaridades nosológicas com outras dermatopatias. Objetivou-se, com este relato de caso, descrever a síndrome clínica, o plano diagnóstico e a conduta terapêutica de um muar acometido por essa enfermidade. Atendeu-se, no Hospital Veterinário da Universidade Federal Rural do Pernambuco, uma mula de oito anos de idade, que apresentava lesões cutâneas pápulo-crostosas e pruriginosas com evolução clínica de dois anos. Em três situações anteriores, a doença havia sido tratada como...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatopatias; Alergia; Ectoparasitos; Equídeos.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601407

Parâmetros ecocardiográficos em cães saudáveis tratados com acepromazina, meperidina e sua associação
Provedor de dados: 45
Autores: Reis,A.C.; Aptekmann,K.P.; Egert,L.; Andrade-Júnior,P.S.C.
RESUMO Objetivou-se avaliar os efeitos da tranquilização com meperidina, acepromazina e de sua associação sobre os parâmetros ecocardiográficos em cães. Foram utilizados 12 cães adultos, da raça Rottweiler, submetidos ao exame ecocardiográfico sem utilização de sedação (controle - TC) e a três protocolos de tratamento, utilizando-se meperidina (TM), acepromazina (TA) e a associação dos medicamentos (TMA). As variáveis foram analisadas pelo teste de Tukey (P&lt;0,05). Observou-se que as médias obtidas na onda A do fluxo mitral em TA e TMA diminuíram significativamente com relação ao TM, que não diferiu do TC. Houve uma diminuição significativa no valor de movimento anular mitral (MAM) e excursão sistólica do plano anular tricúspide (ESPAT) no TA. Não houve...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cardiologia; Tranquilização; Neuroleptoanalgesia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601437

Response of three digital anesthetic technics in horses with forelimb hoof lameness
Provedor de dados: 45
Autores: Dau,S.L.; Azevedo,M.S.; Corte,F.D. De La; Brass,K.E.; Gallio,M.; Ceni,F.; Lubini,B.B.
ABSTRACT The presented study aimed to assess objectively the response of distal interphalangeal joint (DIJ), navicular bursa (NB) and deep digital flexor tendon sheath (DDFTS) anesthesia in horses with forelimb hoof lameness; and evaluate if the presence of radiographic abnormalities on navicular bone could interfere on blocks’ results. Fifteen horses with lameness improvement above 70% after palmar digital nerve (PDN) block were selected for this study. Blocks were assessed separately on five consecutive trials at seven different time-points. The fifth trial was performed to evaluate the influence of exercise on preexisting lameness. Most of horses (73.33%) presented pain related to the podotrochlear apparatus based on clinical and lameness exam and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronic lameness; Navicular disease; Palmar digital nerve block; Osteoarthritis; Deep digital flexor tendon sheath anesthesia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400793

Comb, cloaca and feet scores and testis morphometry in male broiler breeders at two different ages
Provedor de dados: 45
Autores: Leão,R.A.C.; Castro,F.L.S.; Xavier,P.R.; Vaz,D.P.; Grázia,J.G.V.; Baião,N.C.; Avelar,G.F.; Marques Júnior,A.P.
ABSTRACT In broiler breeder roosters, the weight of the testes is positively associated with daily sperm production and fertility. In birds, the testes are located in the coelomic cavity, not being accessible to reproductive evaluation as mammalian testes. The reproductive evaluation of roosters is based on phenotypic traits. Any changes on testes will be reflected on fertility levels. The aim of this paper was to evaluate the potential of association of phenotypic traits as body weight (BW), comb scores (COS), cloaca scores (CLS) and feet scores (FS) with testicular morphometric parameters in adult Cobb® Mx roosters in two ages (25 and 45 weeks of age). The low BW roosters had lower testes weight (TW), smaller seminiferous tubule diameter (STD) and lower...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Testicular regression; Rooster; Histomorphometry; Phenotypic characteristics; Histology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601529

Produção e caracterização de protease fibrinolítica de Streptomyces parvulus DPUA 1573
Provedor de dados: 45
Autores: Batista,J.M.S.; Clementino,E.L.; Nascimento,T.P.; Lima,G.M.S.; Porto,T.S.; Porto,A.L.F.; Porto,C.S.
RESUMO As proteases fibrinolíticas são capazes de degradar coágulos de fibrina formados dentro dos vasos sanguíneos, evitando a trombose intravascular. Em animais, a tromboflebite, que acomete frequentemente os equinos, ocasiona, em seus casos graves, a obstrução jugular e também um edema de laringe, derivando a obstrução das vias aéreas, o que possibilita um edema cerebral, ocorrendo o óbito do animal. Devido ao fato de o tratamento ser de custo elevado, faz-se necessária a investigação de outras fontesde proteases fibrinolíticas com custos menores e com menos efeitos colaterais. Diante disso, este estudo tem como objetivo produzir e caracterizar proteases fibrinolíticas obtidas de Streptomyces parvulus DPUA 1573. Para produção da enzima, foi utilizado um...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptomyces parvulus; Proteases fibrinolíticas; Fermentação submersa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100123

Use of different pressures for transvaginal follicular aspiration in mares
Provedor de dados: 45
Autores: Sá,M.A.F.; Paiva,S.O.; Dutra,G.A.; Barbosa,C.G.; Mello,M.R.B.; Jacob,J.C.F.
ABSTRACT The success of transvaginal follicular aspiration in mares can be influenced by several factors, such as vacuum pump pressure levels. The present study aimed to investigate the effect of different negative pressures (150, 280 and 400mmHg) of the vacuum pump on the oocyte recovery in the mares. The mares (n=10) were undergoing follicular aspiration using three different negative pressures for three consecutive estrous cycles as follows: G150 = 150mmHg (n = 10); G280 = 280mmHg (n = 10); G400 = 400mmHg (n = 10). Every estrous cycle, the group that the mare would participate was drawn, and each animal participated once in each group. Only preovulatory follicle was used, about 30 to 36 hours after application of hCG. To compare the results, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oocyte; Subfertility; Preovulatory follicle; HCG.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300529

Bloqueio de plexo braquial em um bugio-ruivo (Alouatta guariba): relato de caso
Provedor de dados: 45
Autores: Santos,E.R.; Barni,B.S.; Colombi,L.A.F.; Braga,C.S.; Mombach,V.S.; Muccillo,M.S.; Alievi,M.M.; Contesini,E.A.
RESUMO Os bloqueios regionais vêm sendo explorados e difundidos no dia a dia da medicina veterinária. O presente trabalho relata a execução do bloqueio de plexo braquial em um bugio-ruivo (Alouatta guariba) submetido à amputação de três dígitos. Foi utilizada ropivacaína para o bloqueio, com o paciente sob anestesia geral, com auxílio de neuroestimulador periférico. Quatro horas após a cirurgia e cinco horas após o bloqueio, o paciente não apresentava desconforto ou evitava a manipulação do membro operado e não foram observadas complicações. O bloqueio do plexo braquial é mais comumente utilizado quando se pretende promover analgesia e relaxamento muscular do membro torácico em procedimentos cirúrgicos distais à articulação escápulo-umeral. Há carência em...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anestesia; Analgesia; Primata; Animais silvestres.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501186

Primeiro relato de Hysterothylacium deardorffoverstreetorum (Raphidascarididae) em bijupirá de criação, Rachycentron canadum (Linnaeus 1766), no Brasil
Provedor de dados: 45
Autores: Calixto,F.A.A.; Diniz,J.B.; Machado,E.S.; Felizardo,N.N.; Clemente,S.C. São; Mesquita,E.F.M.
RESUMO O objetivo do presente estudo foi registrar a ocorrência de larva de nematoide da família Raphidascarididae, Hysterothylacium deardorffoverstreetorum, em bijupirá Rachycentron canadum (Linnaeus, 1766), criado e alimentado com ração e "trashfish" em fazendas marinhas localizadas no Rio de Janeiro, Brasil, alertando para possíveis riscos zoonóticos ao se usar esse tipo de alimentação para criação de peixes. Foram necropsiados 15 animais. Os parasitas encontrados foram coletados, fixados e, posteriormente, conservados em álcool a 70°GL, clarificados e identificados. Em todos os animais necropsiados, apenas um espécime estava parasitado com uma larva de Hysterothylacium deardorffoverstreetorum na serosa do fígado do peixe e conclui-se que a presença...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maricultura; "trashfish"; Nematoides; Raphidascarididae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100085

Ultrastructure of bovine placenta during all gestational period
Provedor de dados: 45
Autores: Santos,R.B.; Silva,J.M.; Beletti,M.E.
ABSTRACT Placentas from pregnant cows with different gestation periods were used. Placental fragments of all groups were processed and evaluated by transmission electron microscopy. After fragment analysis, bovine placenta was observed to be epitheliochorial type in early pregnancy, becoming progressively sinepiteliocorial at the beginning of the second trimester. There are no ultrastructural evidences of inflammation in the region of caruncles throughout gestation, despite the invasion of caruncle proper lamina by trophoblast cells. However, throughout pregnancy and especially at the end, there were evident signs of cell degeneration in both trophoblast and the uterine epithelium. The active trophoblast cells intensely phagocytize cellular debris. There...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine placenta; Ultrastructure; Maternal-fetal interaction; Cotyledon; Caruncles.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601376

Identificação dos colágenos I, III, IV e α-SMA e participação dos miofibroblastos no processo fibrótico das endometroses equinas
Provedor de dados: 45
Autores: Costa,L.D.; Dias,M.C.; Alvarenga,M.A.; Sequeira,J.L.
RESUMO A endometrose é uma alteração degenerativa das glândulas uterinas e do estroma circundante, caracterizada pelo arranjo periglandular de miofibroblastos e pela deposição de matriz extracelular (ECM). O presente trabalho objetivou avaliar a expressão de colágenos tipos I, III e IV e α-actina de músculo liso (α-SMA) nas endometroses equinas, procurando esclarecer a participação dos miofibroblastos na progressão desses processos. Foram utilizadas 24 biópsias uterinas com diagnóstico de endometrose, recebidas pelo Serviço de Patologia Veterinária e de Reprodução Animal da FMVZ, Unesp, Botucatu, SP. Cortes histológicos foram submetidos às técnicas histoquímicas de tricrômico de Masson, picrosirius red sob luz polarizada e ácido periódico de Schiff (PAS) e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Égua; Endometrose; Colágeno; Miofibroblastos; Imuno-histoquímica.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601398

Characterization of virulence and antibiotic profile and agr typing of Staphylococcus aureus from milk of subclinical mastitis bovine in State of Rio de Janeiro
Provedor de dados: 45
Autores: Soares,B.S.; Melo,D.A.; Motta,C. C.; Marques,V.F.; Barreto,N.B.; Coelho,S.M.O.; Coelho,I.S.; Souza,M.M.S.
ABSTRACT This study aims to detect the main virulence and antimicrobial resistance genes in Stapylococcus aureus from bovine mastitic milk as well as classifying them according to agr typing. A total of 55 strains from six dairy unities in the state of Rio de Janeiro were selected, of these 27.3% presented fbnA and 78,2% for fbnB genes, respectively. None of the strains tested were positive for cap5 gene, 3.6% were positive for cap8 gene. Additionally, 94.5% of strains had hlA gene and 89.1% had hlB gene while 67.3% of the strains had icaA gene and 87.3% had icaD gene. From these results it was possible to establish 12 different virulence profiles. Prevalence of agrII type was detected in 81.8% of the isolates. Concerning antimicrobial resistance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agr typing antibiotics; Bovine mastits; Staphylococcus aureus; Virulenc.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400843

Abortion and fetal death in bitches due anemia caused by vector-borne diseases
Provedor de dados: 45
Autores: Freire,D.A.C.; Oliveira,I.V.P.M.; Ferreira,H.I.P.; Andrade,V.C.P.; Silva,C.R.F.; Kurissio,J.K.; Ullmann,L.S.; Malossi,C.D.; Joaquim,S.F.; Araújo Júnior,J.P.; Langoni,H.; Calabuig,C.; Megid,J.; Antunes,J.M.A.P.
RESUMO Doenças infecciosas são as maiores responsáveis por falhas reprodutivas (FR) em cadelas, causando aborto, morte fetal e natimortalidade. Este estudo teve como objetivo investigar a associação entre agentes infecciosos, FR inexplicáveis e anemia em cadelas. Todas as amostras maternas e fetais foram negativas para a presença dos principais agentes infecciosos causadores de FR: herpes vírus canino 1, Neospora caninum, Brucella spp. e B. canis, enquanto agentes como o de Leishmania spp., parvovírus canino, Ehrlichia canis e Anaplasma platys foram encontrados em sangue materno. Coinfecções de A. platys/E. canis e A. platys/Leishmania spp. foram diagnosticadas. Os resultados indicam que os animais com anemia causadas por doenças transmitidas por vetores...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Anaplasma; Ehrlichia; Leishmania; Reproductive failures.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501326

Propriedades mecânicas de dois padrões de sutura e dois tipos de fios aplicados às tenorrafias dos equinos
Provedor de dados: 45
Autores: Corrêa,R.R.; Pereira,C.A.M.; Frias,N.C.; Baccarelli,D.C.; Zoppa,A.L.V.
RESUMO As lesões traumáticas dos membros que resultam em secções tendíneas são problemas comuns na clínica equina. Diversas complicações têm sido associadas à reparação dos tendões nessa espécie. O objetivo do presente trabalho foi avaliar biomecanicamente dois padrões de sutura e dois diferentes materiais aplicados às tenorrafias. Vinte e quatro peças de tendão flexor digital profundo de equinos foram seccionadas e suturadas em padrão locking loop duplo (grupo 1, com polipropileno; grupo 2, com poliglactina) ou em padrão locking loop simples associado à sutura de epitendão (grupo 3, com polipropileno; grupo 4, com poliglactina). Os corpos de prova foram submetidos a ensaios mecânicos de tração, em que se determinaram valores de força mínima, força máxima...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equino; Tenorrafia; Tendão; Sutura.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400807

Reproductive behavior of crossbred dairy cows grazing an intensive silvopastoral system under tropical dry forest conditions
Provedor de dados: 45
Autores: Sierra-Montoya,E.; Barahona-Rosales,R.; Ruiz-Cortés,Z.T.
ABSTRACT It is widely accepted that selection for high milk yield in dairy cows has negatively affected their reproductive performance. After calving, dairy cows experience a nutritional imbalance due to an asynchrony in the occurrence of the lactation and dry matter intake peaks. In the tropics, this situation is exacerbated due to poor quality and/ or availability of the diet. A study was carried out to describe the nutritional and reproductive behavior of two-to-four parturition crossbred cows (Gyr (Bos indicus) x Holstein (Bos taurus)) divided in two groups according to their calving to first service interval (CFSI): Group 1: ≤50 days CFSI, n=7; Group 2: ≥50 days CFSI, n=8. Animals were grazing in an intensive silvopastoral system (ISS) based on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Days open; Energy balance; Intake; Leucaena; Nutritional management.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100001

Tratamento de feridas excisionais de coelhos com extrato de barbatimão associado a células mononucleares autólogas da medula óssea
Provedor de dados: 45
Autores: Rodrigues,D.F.; Mendes,F.F.; Menezes,L.B.; Carvalho,W.L.; Sá,S.; Silva,J.A.; Souza,L.A.; Silva,L.A.F.
RESUMO Objetivou-se com este estudo avaliar o processo de cicatrização de feridas de coelhos tratadas com extrato de barbatimão (S. adstringens) associado a células mononucleares autólogas da medula óssea (CMMO). Utilizaram-se 20 coelhos, distribuídos em quatro grupos: B, extrato de barbatimão; CB, CMMO com extrato de barbatimão; CS, CMMO com solução fisiológica; S, solução fisiológica. Foi avaliada a presença de crosta, hiperemia, secreção, hemorragia, reepitelização, área da ferida e tempo de cicatrização. No terceiro, sétimo, 14º e 21º dias pós-operatório, realizou-se a biópsia das feridas e avaliaram-se os indicadores dos processos de inflamação e de reparo, com destaque para o colágeno, na coloração picrosírius, bem como de proliferação celular, na...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AgNOR; Cicatrização; Colágeno; Stryphnodendron adstringens; Terapia celular.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501243

Evaluation of adjuvant chemotherapy in feline injection site-associated sarcoma
Provedor de dados: 45
Autores: Pereira,S.T.; Campos,C.B.; Horta,R.S.; Lavalle,G.E.; Araujo,R.B.
ABSTRACT Feline Injection Site-Associated Sarcoma (FISS) is a neoplasm that implies in reduction of quality of life and overall survival in feline patients. A retrospective study of 13 cases of FISS was conducted to evaluate the efficacy of surgical treatment associated to chemotherapy with doxorubicin or carboplatin. Local recurrence occurred in all patients. Patients treated with surgery and chemotherapy presented a longer overall survival and disease-free interval when compared to those that solely received surgical treatment, although no statistical significance was observed (p= 0.3360 and 0.7506, respectively). Surgery remains as the main option for FISS treatment. Further prospective studies with larger samples are warranted to investigate the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: FISS; Doxorubicin; Carboplatin; Surgery.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601508

Efeito da adição do ácido linoleico conjugado no cultivo in vitro de embriões F1 Holandês x Zebu na sobrevivência pós-vitrificação
Provedor de dados: 45
Autores: Leite,A.C.; Andrade,V.B.; Silva,E.B.M.; Borges,A.M.
RESUMO Avaliou-se o efeito da adição do ácido linoleico conjugado (CLA) ao meio de cultivo in vitro na viabilidade pós-vitrificação de embriões F1 Holandês x Zebu. Foram utilizados três meios de cultivo: controle (n=340 oócitos): meio SOF e soro fetal bovino (SFB), sem o CLA; SFB+CLA (n=359 oócitos): meio SOF, SFB e CLA; CLA (n=339 oócitos): meio SOF e CLA, sem o SFB. Todos os blastocistos produzidos foram submetidos à vitrificação, pelo método de Open Pulled Straw. Quinze blastocistos de cada tratamento foram fixados para quantificação lipídica por coloração com Sudan Black B. Para avaliar a viabilidade embrionária, foi observada a capacidade de reexpansão e eclosão pós-aquecimento dos embriões (controle=27; SFB+CLA=30; CLA=17). Foram realizadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ácido linoleico conjugado; Ácido linoleico conjugado trans-10; Cis-12; CLA; Criopreservação de embriões; Vitrificação de embriões.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601385

Atresia anal com fístula retovaginal em ovino: relato de caso
Provedor de dados: 45
Autores: Antonioli,M.L.; Carvalho,J.R.G.; Bustamante,C.C.; Mendonça,L.F.; Bergamasco,P.L.F.; Escobar,A.; Marques,L.C.; Canola,P.A.
RESUMO A atresia anal com fístula retovaginal, é considerada uma afecção congênita rara nos ovinos. Em virtude disso, buscou-se descrever o reparo cirúrgico e cuidados pós-operatórios em uma borrega que apresentava essa afecção. Nesse sentido, uma borrega, sem raça definida, de 25 dias de idade e pesando 7,2kg, apresentou sinais de distensão abdominal e defecação pela vulva. A afecção foi diagnosticada por meio do exame clínico e confirmada radiograficamente, constatando-se atresia anal do tipo III em associação com a fístula.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Borrega; Malformação congênita; Atresia anal; Cuidado pós-operatório; Correção cirúrgica.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501167

Osteogenic differentiation of adipose tissue-derived mesenchymal stem cells cultured with different concentrations of prolactin
Provedor de dados: 45
Autores: Oliveira,K.P.; Reis,A.M.S.; Silva,A.P.; Silva,C.L.R.; Goes,A.M.; Serakides,R.; Ocarino,N.M.
ABSTRACT The objective was to evaluate the in vitro effect of prolactin in osteogenic potential of adipose tissue-derived mesenchymal stem cells (ADSCs) in female rats. ADSCs were cultured in osteogenic medium with and without the addition of prolactin and distributed into three groups: 1) ADSCs (control), 2) ADSCs with addition of 100ng/mL of prolactin and 3) ADSCs with addition of 300ng/mL of prolactin. At 21 days of differentiation, the tests of MTT conversion into formazan crystals, percentage of mineralized nodules and cells per field and quantification of genic transcript for alkaline phosphatase, osteopontin, osteocalcin, bone sialoprotein, BMP-2 and collagen I by real-time RT-PCR were made. The addition of prolactin reduced the conversion of MTT in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rat; Osteogenic differentiation; Osteoblasts; Hormone; Adipose tissue.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601573

Aspectos parasitológicos da traíra (Hoplias malabaricus ) proveniente da cidade de São Bento, MA
Provedor de dados: 45
Autores: Rodrigues,L.C.; Santos,A.C.G.; Ferreira,E.M.; Teófilo,T.S.; Pereira,D.M.; Costa,F.N.
ABSTRACT The aim of this study was to verify the parasitologycal aspects of fish (Hoplias malabaricus), coming from São Bento city, Maranhão state. For this, 70 fish were used, verifying the parasitism indexes and coefficients. For the parasitological results nematodeos were identified, with zoonotical potential of the Contracaecum spp, Pseudoterranova spp, Eustrongylides spp; monogenetics Gyrodactirus spp, Dactylogirus spp and larva Acanthella of Acanthocephalo. Of the 70 (100%) fishes, 64 (91.4%) were sponged, with prevalence of 82.8% (58) for the nematodeo Contracaecum spp, 65.7% (46), Pseudoterranova spp, 7.1% (5), Eustrongylides spp, 71.4% (50), monogenetics and larva Acanthella of Acantocephalo, respectively. A maior amplitude de intensidade (1-30),...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Peixe; Aspectos higiênico-sanitários; Endoparasitos.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100264

Alterações hemogasométricas em equinos submetidos à distensão do cólon menor
Provedor de dados: 45
Autores: Sabes,A.F.; Gravena,K.; Herdandez-Tovar,M.C.; Canello,V.A.; Bernardi,N.S.; Queiroz,D.J.; Oliveira,J.A.; Lacerda-Neto,J.C.
RESUMO O objetivo do presente estudo foi avaliar a hemogasometria venosa de equinos com lesões isquêmicas induzidas experimentalmente no cólon menor. Foram utilizados oito equinos sadios, com idades entre cinco e oito anos, sem raça definida. Os animais foram submetidos à celiotomia e a quatro horas de obstrução intraluminal do cólon menor. Foram realizadas coletas de amostras de sangue imediatamente antes da indução anestésica (T0), no momento em que a anestesia foi estabilizada (T1), quatro horas após a obstrução intraluminal (T4), e, durante o pós-cirúrgico, as coletas foram realizadas em intervalos de 12 horas até completar 72 horas (T16, T28, T40, T52, T64 e T76). Notou-se em T4 alcalose metabólica, com compensação respiratória por meio da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cavalo; Gases sanguíneos; Obstrução.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501083

Fracionamento de carboidratos e proteínas, cinética de degradação ruminal in vitro pela técnica de produção de gás, de rações suplementares contendo torta de girassol
Provedor de dados: 45
Autores: Santo,A.X.; Silva,L.D.F.; Lançanova,J.A.C.; Ribeiro,E.L.A.; Mizubuti,I.Y.; Fortaleza,A.P.S.; Henz,É.L.; Júnior,F.L. M.
RESUMO Objetivou-se neste estudo fracionar os carboidratos e as proteínas e avaliar a cinética de degradação ruminal de rações contendo 0; 24; 48 e 72% de torta de girassol. Os carboidratos foram fracionados em A+B1, B2 e C, e as proteínas em A, B1+B2, B3 e C. Os parâmetros de cinética de degradação ruminal das rações foram estimados a partir do método semiautomático de produção cumulativa de gases in vitro. Foram utilizados quatro animais 1/2 Gir x 1/2 Holandês, machos e castrados, fistulados no rúmen, mantidos em pastagem e recebendo 1kg de ração concentrada, como doadores de inócuo ruminal. O ensaio foi realizado em delineamento em blocos ao acaso, com quatro rações e quatro períodos, e os resultados obtidos foram interpretados de acordo com a análise...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avaliação de alimentos; Coprodutos; Taxa de degradação; Ruminante.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100234

Lipid peroxidation in female dogs bearing mammary gland carcinomas
Provedor de dados: 45
Autores: Souza,I.B.; Cardoso,C.V.; Poppe,S.C.; Bondan,E.F.
RESUMO O estresse oxidativo causa peroxidação lipídica e formação de substâncias reativas ao ácido tiobarbitúrico (TBARS), processo que está comprovadamente associado à progressão de neoplasias malignas em seres humanos. Por sua vez, espécies reativas de oxigênio (EROs) são produzidas no processo carcinogênico, de forma que a geração de EROs parece ser, ao mesmo tempo, causa e consequência dele. Em cães, a associação da peroxidação lipídica com a carcinogênese permanece ainda obscura, com estudos escassos, de resultados conflitantes, que, muitas vezes, incluem, dentro de um mesmo grupo amostral, animais portadores de tumores heterogêneos dos pontos de vista morfológico e comportamental, além de estes se apresentarem em estágios bastante distintos. Nesse...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Dogs; Cancer; Mammary gland; Oxidative stress; TBARS.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501335

Imperfuração congênita do óstio uretral externo associada à persistência de úraco em bezerra Nelore: relato de caso
Provedor de dados: 45
Autores: Alonso,J.M.; Rodrigues*,C.A.; Alves,A.L.G.; Watanabe,M.J.; Hussni,C. A.
RESUMO A imperfuração uretral associada ou não à persistência do úraco é rara; quando concomitante, o animal mantém o fluxo urinário por via umbilical, entretanto, após o tratamento de correção da persistência do úraco, ocorre o armazenamento de urina, que pode culminar em complicações como bexigoma, hidroureter e ruptura vesical. Uma bezerra Nelore, com 20 dias de idade, foi atendida com persistência de úraco. Prescreveu-se a aplicação local de tintura de iodo a 10% durante cinco dias, e indicou-se retorno para obliteração cirúrgica caso não houvesse resposta à terapia proposta. Após 30 dias, o animal retornou com distensão abdominal, histórico de diminuição gradual do fluxo urinário, com ausência de micção via vaginal e discreto gotejamento de urina...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovino; Má-formação congênita; Onfalopatias; Uretra.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200305

Novas perspectivas no diagnóstico e tratamento da acropostite-fimose em touros
Provedor de dados: 45
Autores: Rabelo,R.E.; Silva,L.A.F.; Borges,N.C.; Vulcani,V.A.S.; Oliveira,R.S.; Santos,G.P.; Queiroz,P.J.B.
RESUMO A acropostite-fimose é um processo inflamatório da extremidade do prepúcio, diagnosticada com frequência em touros. O presente estudo objetivou avaliar o exame ultrassonográfico na definição da viabilidade do folheto prepucial interno (FPI) e na evolução clínica do pós-operatório, após o emprego de fios de categute ou poliglactina na hemostasia e de algodão ou poliglactina na confecção de sutura padrão Donatti empregada para fixar o FPI à pele prepucial no transoperatório da acropostite-fimose em touros. A sutura utilizada foi captonada ou não captonada, e os animais submetidos ao procedimento cirúrgico apresentavam no mínimo dois terços do FPI viável. Os touros foram alocados, aleatoriamente, em quatro grupos contendo nove animais cada, de acordo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovino; Cirurgia; Exame clínico; Prepúcio; Reprodução.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400851

Infection of the muscle tissue of the filter-feeding cichlid, Chaetobranchopsis orbicularis Steindachner, 1875, by Kudoa orbicularis (Myxozoa: Multivalvulidae) on Marajó Island in the Brazilian Amazon region
Provedor de dados: 45
Autores: Sindeaux-Neto,J.L.; Velasco,M.; Santos,P.; Matos,P.; Matos,E.
ABSTRACT This study describes aspects of infections caused by the myxosporidian Kudoa orbicularis in filter-feeding cichlids, Chaetobranchopsis orbicularis, caught in the Arari River in the municipality of Cachoeira do Arari, on Marajó Island, Pará, Brazil. The parasite forms pseudocysts scattered throughout the striated epaxial and hypaxial muscles. Samples embedded in paraffin were analyzed histologically using hematoxylin-eosin, Gömöri, Ziehl-Neelsen, and Giemsa staining. Necropsy of the C. orbicularis specimens revealed that 100% (50/50) were infected with K. orbicularis. The specimens presented grossly abnormal muscle texture, resulting in extensive inconsistencies and weakness. Progressive softening of the muscles was observed during necropsy,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Muscle; Kudoa; Myoliquefaction; Filter-feeding cichlid; Myxozoa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601601

Estudo anatômico, ultrassonográfico e tomográfico do aparato podotroclear de equinos adultos
Provedor de dados: 45
Autores: Souza,L.P.; Bortolini,Z.; Müller,T.R.; Fonteque,J.H.; Schade,J.; Luciani,M.G.; Souza,D.S.; Vulcano,L.C.
RESUMO A síndrome do navicular é uma condição que envolve o aparato podotroclear e representa uma das causas mais comuns de claudicação dos membros torácicos de equinos. Portanto, o estudo complementar da região reveste-se de grande interesse quando se refere ao diagnóstico e tratamento das claudicações dos equinos. O objetivo deste estudo foi demonstrar as diferenças dos achados imagenológicos entre a ultrassonografia e a tomografia computadorizada na avaliação das estruturas palmares do aparato podotroclear de equinos adultos e hígidos, bem como a descrição das estruturas observadas nas imagens obtidas com essas técnicas. Para isso, foram realizadas imagens de quatro peças anatômicas, as quais foram posteriormente seccionadas e utilizadas para a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diagnóstico; Claudicação; Navicular; Tomografia computadorizada; Ultrassom.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501097

Osteossíntese minimamente invasiva com placa bloqueada (Mipo) sem a utilização de intensificadores de imagem nas fraturas de tíbia em cães
Provedor de dados: 45
Autores: Rosa-Ballaben,N.M.; Filgueira,F.G.F.; Avante,M.L.; Chung,D.G.; Moraes,P.C.; Minto,B.W.
RESUMO Avanços na compreensão da biologia óssea e das complicações das fraturas têm levado a modificações na abordagem da fixação interna, sendo a osteossíntese minimamente invasiva com placa (Mipo) uma das recentes evoluções para o manejo biológico das fraturas. O objetivo do presente estudo foi avaliar o uso de placas bloqueadas aplicadas de forma minimante invasivas em fraturas da tíbia de cães, sem a utilização de intensificadores de imagem intraoperatória. Foram utilizados 10 cães que apresentavam fraturas da tíbia, de idades e raças variadas. Os animais foram avaliados quanto à deambulação, à intensidade do edema, e exames radiográficos foram realizados nos períodos zero, 15, 30, 60, 90 e 120 dias de pós-operatório. Após 15 dias de pós-operatório,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cicatrização óssea; Cirurgia; Implantes ortopédicos; Ortopedia; Osteossíntese biológica.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200347

Herniorrafia diafragmática videoassistida em gato: relato de caso
Provedor de dados: 45
Autores: Copat,B.; Bertoletti,B.; Chaves,R.O.; Feranti,J.P.S.; Coradini,G.; Hartmann,H.F.; Corrêa,L.F.D.; Brun,M.V.
RESUMO Relata-se um caso de um felino com sinais de dificuldade respiratória havia cerca de 30 dias e emagrecimento progressivo. Ao exame radiográfico torácico e de abdômen, ficou evidenciada perda de definição da linha diafragmática, sendo compatível com hérnia diafragmática. Na laparoscopia, foi observado grande defeito diafragmático, além de estruturas herniadas. Em razão de as vísceras abdominais direcionarem-se ao tórax, dificultando a oclusão do defeito com suturas intracorpóreas, optou-se pela realização de incisão paracostal, procedendo-se à herniorrafia por celiotomia reduzida. A videolaparoscopia permitiu localizar o local herniado e promover a redução dos órgãos envolvidos com mínimo trauma operatório. Logo, mostrou-se como eficaz ferramenta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Felino; Hérnia diafragmática; Cirurgia minimamente invasiva.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400883

Zeólitas naturais na dieta de frangos de corte
Provedor de dados: 45
Autores: Schneider,A.F.; Yuri,F.M.; Almeida,D.S.; Roeder,J.V.C.; Xavier,J.S.; Gewehr,C.E.
RESUMO O objetivo deste trabalho foi avaliar o efeito da inclusão de 0,5% da zeólita natural clinoptilolita na dieta de frangos de corte sobre o consumo de água, ração e características das excretas. Foi conduzido um ensaio em gaiolas metabólicas, com frangos de corte de linhagem comercial, no período de 14 a 23 dias de idade. O experimento foi constituído de dois grupos de aves, sendo que um recebeu dieta sem inclusão de zeólitas (controle) e outro dieta com inclusão de 0,5% de zeólita (clinoptilolita) em rações isonutritivas, em um delineamento inteiramente ao acaso, com 10 repetições de 10 aves. Avaliou-se o consumo de água e de ração, nas excretas, pH, teor de nitrogênio total e umidade. A inclusão de 0,5% de zeólitas naturais na dieta não alterou...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amônia; Clinoptilolita; PH de excretas; Umidade das excretas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100191

Dietas pós-eclosão suplementadas com fontes de gordura e acrescidas de taurina e glicina sobre a morfometria intestinal e o desempenho de frangos de corte de um a 21 dias
Provedor de dados: 45
Autores: Fernandes,J.I.M.; Rorig,A.; Gottardo,E.T.; Schmidt,J.M.; Burin Júnior,A.M.; Fülber,L.M.
RESUMO O objetivo deste estudo foi avaliar o efeito do fornecimento de dietas pós-eclosão suplementadas com diferentes fontes de gordura insaturada e adicionadas ou não de taurina e glicina sobre o desempenho produtivo, a biometria e a morfometria do intestino delgado de pintos de corte de um a 21 dias de idade. Foram utilizados 480 pintos de corte machos de um dia de idade da linhagem Cobb. O delineamento foi inteiramente ao acaso, em esquema fatorial 2 x 4, com e sem suplementação de taurina e glicina e quatro dietas (controle, óleo de peixe, de soja e de girassol), totalizando oito tratamentos com seis repetições de 10 aves cada. As rações experimentais foram fornecidas de zero a quatro dias de idade. O desempenho zootécnico foi avaliado ao alojamento e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sais biliares; Lipídios; Mucosa intestinal; Ganho de peso.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100198

Biochemical composition of the hoof capsule of buffaloes and its influence on hoof quality
Provedor de dados: 45
Autores: Assis,B.M.; Vulcani,V.A.S.; Silva,L.A.F.; Dias,M.; Pancotti,A.; Lima,C.R.O.; Rabelo,R.E.
ABSTRACT The purpose of this study was to establish the biochemical parameters of the abaxial wall, dorsal wall and sole of the hoof of the medial thoracic, lateral, and medial pelvic digits of buffalos. The hoof samples were subjected to destructive biochemical analyses to identify the dry material (DM), mineral matter (MM), organic matter (OM), crude protein (CP) and ether extract (EE) contents. Sulfur (S), calcium (Ca), potassium (K), phosphorus (P), zinc (Zn) and copper (Cu) levels were determined based on nondestructive biochemical analyses. The parameters of dry material, mineral matter, organic matter, crude protein and ether extract of hoof capsule of the digits of buffalos can be determined by means of both destructive and nondestructive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Buffaloes; Keratinized epidermis; Minerals; Crude protein.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100057

Ceratoconjuntivite nodular em um caso de leishmaniose visceral canina: relato de caso
Provedor de dados: 45
Autores: Eguchi,G.U.; Oliveira,G.G.; Babo-Terra,V.J.; Souza,A.I.; Barros,R.; Palumbo,M.I.P.
RESUMO Relata-se um caso de leishmaniose visceral canina com ceratoconjuntivite nodular como queixa exclusiva do proprietário. O diagnóstico se deu pela observação de formas amastigotas de Leishmania sp. no exame parasitológico direto de citologia aspirativa conjuntival. Lesões oculares raramente são queixas principais únicas de cães com leishmaniose, como o caso em questão, o que demonstra a variabilidade de apresentação clínica da doença e a importância da realização de testes laboratoriais diagnósticos para leishmaniose como triagem para pacientes de áreas endêmicas.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leishmania; Neoplasias; Oftalmopatias.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601480

Food preferences of cockatiel chicks ( Nymphicus hollandicus ) in captivity
Provedor de dados: 45
Autores: Naves,D.A.S.; Carvalho,T.S.G.; Zangeronimo,M.G.; Saad,C.E.P.; Scalon,J.D.
ABSTRACT In order to improve the management and maintenance of the quality of life of captive wild birds, this study aimed to assess the food preferences of cockatiel chicks (Nymphicus hollandicus) kept in captivity. Thirty-two cockatiel chicks, three to 12 months of age, were kept in a galvanized, wire-netted vivarium with six ceramic feeders, two for an extruded diet, two for a dry-mashed diet and two for a seed mixture. Both extruded and dry-mashed food are commercial psittacine diets. Three round ceramic pots were used to provide water. The birds were exposed to 12 hours of artificial light (40 W incandescent lamps) during the experimental period of 27 days. The birds were observed by video filming, daily, through an ad libitum observation technique....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal behavior; Psittacines; Extruded food; Food intake; Seeds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300683

Retrospective study of Bovine herpesvirus 5 meningoencephalitis in cattle from São Paulo State, Brazil
Provedor de dados: 45
Autores: Cagnini,D.Q.; Andrade,D.G.A.; Cunha,P.H.J.; Oliveira-Filho,J.P.; Amorim,R.L.; Alfieri,A.A.; Borges,A.S.
ABSTRACT Meningoencephalitis caused by Bovine herpesvirus 5 (BoHV-5) is an important neurological disease that affects Brazilian cattle herds. The present study investigated the presence of BoHV-5 DNA in cattle diagnosed with meningoencephalitis at Faculdade de Medicina Veterinária e Zootecnia, UNESP - Univ Estadual Paulista from 1980 to 2009. The records obtained from the Large Animal Internal Medicine Service and the Animal Pathology Service were reviewed to identify clinical and epidemiological data from cattle with neurological signs. Excluding rabies cases, we found 115 cases of cattle with neurological signs that had been necropsied. Non-suppurative meningoencephalitis was diagnosed in 28 animals of the 115 initially selected based on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle diseases; Herpesvirus 5 bovine; Meningoencephalitis; Pathology; Polymerase chain reaction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200299

Histological evaluation and E-cadherin and β-catenin expression in kidney of dogs submitted to renal ischemia and reperfusion after chlorpromazine administration
Provedor de dados: 45
Autores: Menezes,L.B.; Fioravanti,M.C.S.; Oliveira,F.A.; Silva,M.S.B.; Franco,L.G.; Sales,T.P.; Andrascko,M.M.; Guimarães,L.L.B.; Miguel,M.P.; Araújo,E.G.
ABSTRACT Renal ischemia can be associated with some urological procedures, such as renovascular surgery or kidney transplantation, that are often followed by acute renal failure. The aim of this study was to verify the E-cadherin and β-catenin localization in canine kidney in different times of renal ischemia and reperfusion after chlorpromazine application. Twelve dogs were randomly distributed equally into two groups. GroupA with ischemia and reperfusion without chlorpromazine and groupB with ischemia and reperfusion treated by chlorpromazine. GroupB received intravenous chlorpromazine, 15 min before the artery obstruction, which lasted 1 hour. After this period, the clamps in the renal arteries were released and the organ remained in reperfusion for 2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute renal failure; Adherens junctions; Cell adhesion; Kidney tubular necrosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501206

Inseminação em ovelhas por videolaparoscopia por meio de acesso único: relato de caso
Provedor de dados: 45
Autores: Silva-Meirelles,J.R.; Castro,M.L.; Bergstein,T.G.; Ferrari,M.V.; Dornbusch,P.T.
RESUMO A inseminação artificial (IA) proporciona melhoramento genético, intensifica o manejo animal e possibilita a utilização de sêmen de reprodutores que se encontram em diferentes regiões do país, bem como de animais de alto valor zootécnico que já morreram ou de machos que possuem subfertilidade. Por peculiaridades anatômicas das ovelhas, a inseminação artificial intrauterina transcervical é dificultosa. Dessa forma, bons resultados na IA são alcançados quando há deposição do sêmen diretamente dentro do útero, realizada por meio de laparoscopia. Atualmente, diversas técnicas laparoscópicas são utilizadas para inseminação; os métodos rotineiramente empregados são realizados através de dois ou três portais de acesso. O presente trabalho tem o objetivo de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inseminação videolaparoscópica; Técnica; Procedimento.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501163

Serum levels of proteins and acute-phase proteins in captive emus ( Dromaius novaehllandieae ) of different ages
Provedor de dados: 45
Autores: Filippo,P.A. Di; Viana,I.S.; Almeida,A.J.; Graça,F.A.S.; Rodrigues,A.B.F.; Nogueira,A.F.S.
ABSTRACT Protein electrophoresis is a relatively simple technique that allows separating serum protein fractions, and provides important information in the investigation and diagnosis of several diseases. This study determined the levels of acute-phase proteins in the serum of healthy, captive emus (Dromaius novaehollandiae). Animals were divided into two groups (n=11 in each) based on age, with 1-year-old and 4-year-old emus. Acute-phase proteins were separated by SDS-PAGE. Ceruloplasmin, transferrin, albumin, haptoglobin, acidic glycoprotein, IgA, and IgG were detected in the serum of all animals. Protein profiles varied significantly with age (P&lt;0.05). Individuals in the 4-year-old emus group had higher values of ceruloplasmin, transferrin, albumin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute-phase response; Polyacrylamide gel electrophoresis; Infection; Emus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200405

Pesquisa do vírus da diarreia viral bovina em touros mantidos a campo no estado do Rio Grande do Sul
Provedor de dados: 45
Autores: Mascitti,A.K.; Fraga,A.P.; Abreu,J.P.R.; Weber,M.N.; Salla,P.F.; Corrêa,M.V.S.; Ikuta,N.; Canal,C.W.; Lunge,V.R.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300766

Applicability of polyamide 12 intramedullary locked rods in the stabilization of induced humeral fracture in cockerels (white plymouth rock) - in vivo study
Provedor de dados: 45
Autores: Cherobini,E.P.; Carvalho,L.L.; Garcia,D.O.; Dias,F.G.G.; Malta,C.A.S.; Facin,A.C.; Mattos-Junior,E.; Magalhães,G.M.; Dias,L.G.G.G.
ABSTRACT The aim of this study was to evaluate the use of polyamide 12 intramedullary rods in osteotomized humerus in cockerels (White Plymouth Rock) and analyze, by radiography and histopathology, bone consolidation and the formation of bone callus. Ten cockerels were subjected to transverse osteotomy of the right humeral diaphysis followed by the insertion of polyamide 12 locked rods, with two nails in each bone fragment. Radiographies obtained at the immediate pre and post-operative period, and every 7 days for 3 months revealed no perioperatory complications. Radiography revealed a radiopaque bone callus between the 4th and 5th week post-surgery. Histopathology detected an amphophylic material (polyamide 12 rod) in the intramedullary region and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian; Osteosynthesis; Orthopaedics; Bone union; Milling.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400771

Ecologia da comunidade de helmintos gastrointestinais de tartarugas-verdes ( Chelonia mydas ) recolhidas no litoral do Espírito Santo
Provedor de dados: 45
Autores: Gomes,M.C.; Martins,I.V.F.; Werneck,M.R.; Pavanelli,L.
RESUMO A tartaruga-verde, Chelonia mydas, apresenta distribuição cosmopolita. No Brasil, ocorre na costa, porém desova em ilhas oceânicas. A helmintofauna de tartarugas-verdes é diversificada, podendo-se dizer que tem a maior diversidade comparada com outras espécies de tartarugas. Objetivou-se avaliar aspectos ecológicos da comunidade de helmintos gastrointestinais e relacionar com a condição corporal de tartarugas-verdes recolhidas no litoral do Espírito Santo. Foram utilizados 36 exemplares juvenis da espécie C. mydas. O trato gastrointestinal foi separado e dividido em porções: esôfago/estômago, intestino delgado e intestino grosso. Cada porção foi inspecionada à procura de parasitos, e os exemplares encontrados foram separados para posterior...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tartaruga marinha; Brasil; Parasito; Trematoda.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300644

Estudo da vascularização folicular e do corpo lúteo de éguas cíclicas tratadas com extrato de pituitária equina utilizando ultrassom Doppler colorido
Provedor de dados: 45
Autores: Medeiros,M.C.R.; Farinasso,A.; Nery,I.H.A.V.; Souza,H.M.; Vasconcelos,J.L.A.; Trindade,K.L.G.; Batista,A.M.; Manso Filho,H.C.; Carneiro,G.F.; Wischral,A.
RESUMO Informações sobre a vascularização da parede folicular e do corpo lúteo equino, associadas à superovulação, são escassas. Com o objetivo de avaliar o efeito superovulatório do extrato de pituitária equina (EPE) no fluxo sanguíneo folicular e luteal, foram utilizadas seis éguas Puro Sangue Árabe, em dois ciclos estrais (controle e tratamento). As éguas foram monitoradas diariamente por ultrassonografia modo B, até que os folículos atingissem diâmetro de 23mm (desvio). No ciclo tratamento, as éguas receberam 8mg de EPE, uma vez ao dia, por via IM, até que dois ou mais folículos atingissem o diâmetro entre 32 e 35mm. A ovulação foi induzida com acetato de deslorelina, quando os folículos atingiram, no mínimo, 35mm. No momento do desvio folicular, da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equino; Folículo ovariano; Fluxo sanguíneo; Superovulação.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501089

Análise conjunta de indicadores na viabilidade econômica do confinamento de novilhos recebendo dietas com diferentes níveis de concentrado
Provedor de dados: 45
Autores: Rosa,J.R.P.; Pacheco,P.S.; Fabricio,E.A.; Camera,A.; Maysonnave,G.S.; Machado,G.I.O.
RESUMO O objetivo deste estudo foi avaliar a viabilidade econômica, por meio da análise conjunta de indicadores financeiros expressos por animal, da terminação em confinamento de novilhos Aberdeen Angus recebendo dietas com diferentes níveis de concentrado (NC): 25, 40, 55 ou 70% (base na matéria seca). Foram consideradas cotações históricas consecutivas dos anos de 2003 a 2014. A análise univariada caracterizou-se por delineamento inteiramente ao acaso, com quatro tratamentos e quatro repetições, procedendo-se à análise de regressão. A análise multivariada consistiu de agrupamento (cluster). Pela análise univariada, houve similaridade para os indicadores financeiros, com médias para margem bruta de R$ 173,21; margem líquida de R$ 163,73; lucro de R$...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Análise de investimentos; Análise de agrupamento; Eficiência econômica; Projetos de investimento; Tomada de decisão.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501275

Confirmation and Sequence analysis of N gene of PPRV in South Xinjiang, China
Provedor de dados: 45
Autores: Liu,YongHong; Yang,Bo; Li,XianQiang; Wang,XueFeng; Zhang,LuYao; Li,Fei; Zhao,Li.
ABSTRACT In China, Peste des petits ruminants (PPR) was officially first reported in 2007. From 2010 until the outbreak of 2013, PPRV infection was not reported. In November 2013, PPRV re-emerged in Xinjiang and rapidly spread to 22 P/A/M (provinces, autonomous regions and municipalities) of China. In the study, suspected PPRV-infected sheep in a breeding farm of South Xinjiang in 2014 were diagnosed and the characteristics of complete sequence of N protein gene of PPRV was analyzed. The sheep showed PPRV-infected signs, such as fever, orinasal secretions increase, dyspnea and diarrhea, with 60% of morbidity and 21.1% of fatality rate. The macroscopic lesions after autopsy and histopathological changes were observed under light microscope including...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PPR; Diagnosis; N gene; Sequence analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501105

Culture and molecular identification of microorganisms from Digital Dermatitis lesions in dairy cattle: Leptospira, an unexpected finding
Provedor de dados: 45
Autores: Diniz,S.; Sandes,S.H.C.; Bomfim,M.R.Q.; Santos,P.C.; Cruz,F.D.; Moreira,T.F.; Carvalho,M.R.S.; Cisalpino,P.S.; Moreira,E.S. A.
ABSTRACT Bovine digital dermatitis (BDD) is an infectious and contagious disease characterized by ulcerative and proliferative lesions affecting the skin on the bulbs of the heel or the interdigital cleft in dairy cattle, often associated with lameness. Evidences on the etiology of BDD indicate that it is multifactorial, involving environmental factors and multiple bacterial colonization. We isolated and identified microorganisms from BDD biopsy samples obtained from five Holstein Friesian and two Jersey cows by cultivation and molecular identification of bacterial isolates using 16S rRNA gene sequence analysis. We identified six bacterial species: Spirochetes as Treponema pedis and Leptospira broomi/L. fainei, L. licerasiae/L. wolffii; Corynebacterium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine digital dermatitis; Molecular identification; 16S rRNA gene analysis; Treponema; Leptospira.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300559

Fine needle aspiration cytology in feline skeletal muscle as a diagnostic tool for extramedullary plasmacytoma
Provedor de dados: 45
Autores: Martins,D.B.; Rossato,C.K.; Silva,S.L.; Almeida,S.S.N.; Ribeiro,L.S.
ABSTRACT Extramedullary noncutaneous plasmacytoma (ENP) is a myeloproliferative disorder of plasma cells that rarely affects cats. This paper describes an ENP case revealed by fine needle aspiration cytology (FNAC) of the mass in the skeletal muscle of an 8-month-old, male, mixed breed cat, which had a nodule in the left hind limb. The rapid immunoassay test confirmed the presence of feline leukemia virus (FeLV). The animal necropsy macroscopically showed the nodule came from the semimembranosus muscle. Histopathological examination ratified the cytological findings. Thus, this paper alerts to the existence of plasmacytoma located in the skeletal muscle of feline species. FNAC is a quick and efficient method for diagnosis of ENP.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cat; Aspiration biopsy; Feline leukemia virus; Skeletal muscle.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300587

Desempenho produtivo de frangos de corte e utilização de energia e nutrientes de dietas iniciais com milho classificado ou não e suplementadas com complexo enzimático
Provedor de dados: 45
Autores: Fernandes,J.I.M.; Contini,J.P.; Prokoski,K.; Gottardo,E.T.; Cristo,A.B.; Perini,R.
RESUMO Dois experimentos foram conduzidos com o objetivo de avaliar o efeito da adição de um complexo enzimático em dietas iniciais elaboradas com milho classificado ou não por mesa densimétrica sobre o desempenho produtivo e a digestibilidade de nutrientes. Foram utilizados 1080 frangos de corte, machos, distribuídos em um delineamento inteiramente ao acaso, em esquema fatorial 2 x 3 (milho classificado ou não vs. dieta controle, dieta controle acrescida de complexo enzimático e dieta controle acrescida de enzimas e com redução de 150kcal de EM), totalizando seis repetições e 36 unidades experimentais. No ensaio de metabolismo, foram utilizadas 96 aves de 21 dias de idade, alojadas em baterias metálicas e distribuídas aos seis tratamentos, com oito...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energia metabolizável; PNAs; Enzimas exógenas; Ganho de peso.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100181

Validação do Nanolipe ® como método para determinar a digestibilidade aparente dos nutrientes pelos equinos
Provedor de dados: 45
Autores: Moss,P.C.B.; Rezende,A.S.C.; Saliba,E.O.; Lana,Â.M.Q.; Moura,R.S.; Cassou,F.; Costa,M.L.L.; Freitas,G.P.; Alves,G.E.S.
RESUMO O NANOLIPE® é o indicador de digestibilidade LIPE® com incorporação de nano partículas que se misturam de forma mais homogênea e rápida na digesta, permitindo redução do período de adaptação e maiores taxas de recuperação daquele quando comparado com outros indicadores usados em equinos. Objetivou-se neste trabalho comparar a digestibilidade dos nutrientes de dieta em equinos obtida pelo método padrão (coleta total de fezes - CTF), estimada por dois indicadores internos (fibra em detergente ácido indigestível - FDAi; lignina Klason - LK) e por indicador externo NANOLIPE®, visando à validação deste último para uso na nutrição equina. Em delineamento de blocos ao acaso, oito éguas Mangalarga Marchador adultas (média de 380kg PV) foram usadas para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lignina; Indicadores; Nanotecnologia; Produção fecal; Taxa de recuperação.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300687

Refluxo gastroesofágico em cadelas durante ovário-histerectomia convencional submetidas a diferentes medicações pré-anestésicas
Provedor de dados: 45
Autores: Hartmann,H.F.; Feranti,J.P.S.; Oliveira,M.T.; Linhares,M.T.; Correa,L.F.D.; Coradini,G.P.; Pires,B.; Brun,M.V.
RESUMO A doença do refluxo gastroesofágico decorre do fluxo de conteúdo gastroduodenal para o esôfago e/ou para os órgãos adjacentes, o que leva à ampla gama de sinais e implicações clínicas. É desconhecida a incidência de refluxo gastroesofágico transoperatório em caninos. O objetivo deste trabalho foi, por meio da endoscopia flexível, avaliar a presença do refluxo gastroesofágico em cadelas submetidas a ovário-histerectomia com base nos fármacos analgésicos utilizados na medicação pré-anestésica (morfina, tramadol ou metadona). Concluiu-se que não houve diferença na incidência de refluxo gastroesofágico transoperatório, não tendo os fármacos testados influenciado de forma diferente esse comportamento; porém, alguns animais do grupo morfina apresentaram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endoscopia; Regurgitação transoperatória; Pré-medicação; Canino.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501231

Correlação entre as escalas analógica visual, de Glasgow, Colorado e Melbourne na avaliação de dor pós-operatória em cadelas submetidas à mastectomia total unilateral
Provedor de dados: 45
Autores: Comassetto,F.; Rosa,L.; Ronchi,S.J.; Fuchs,K.; Regalin,B.D.; Regalin,D.; Padiha,V.; Oleskovicz,N.
RESUMO Objetivou-se correlacionar a necessidade de resgate analgésico pós-operatório por meio das escalas analógica visual (EVA), de Glasgow, Colorado e Melbourne, por meio de um avaliador experiente (AE) e outro não experiente (ANE), em cadelas submetidas à mastectomia unilateral total. Foram utilizadas 24 cadelas, hígidas, internadas 24 horas antes do procedimento cirúrgico, para avaliação do seu comportamento, com o auxílio das escalas descritas acima no momento basal (M0). Foram pré-medicadas com acepromazina e morfina (0,02 e 0,5mg/kg) e induzidas à anestesia geral com propofol (4mg/kg), mantidas em plano anestésico com CAM de isoflurano 1%. A manutenção analgésica transoperatória foi realizada com cetamina e fentanil (10µg/kg/min e 10µg/kg/h). As...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Avaliação da dor; Escalas compostas; Dor aguda; Mastectomia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200355

Inhibition of equine arteritis virus by an antimicrobial peptide produced by Bacillus sp. P34
Provedor de dados: 45
Autores: Silva,D. Scopel e; Castro,C.C.; Silva e Silva,F.; Costa,G.A.; Soares,M.P.; Vargas,G.D.; Fischer,G.; Lima,M.; Brandelli,A.; Motta,A.S.; Hübner,S.O.
ABSTRACT P34 is an antimicrobial peptide produced by Bacillus sp. P34, isolated from the intestinal contents of a fish from the Amazon basin. This peptide showed antibacterial properties against Gram-positive and Gram-negative bacteria and was characterized as a bacteriocin like substance. It was demonstrated that the peptide P34 exhibited antiviral activity against feline herpesvirus type 1 in vitro. The aim of this work was to evaluate P34 for its antiviral properties in vitro, using RK 13 cells, against the equine arteritis virus, since it has no specific treatment and a variable proportion of stallions may become persistently infected. The results obtained show that P34 exerts antiviral and virucidal activities against equine arteritis virus, probably...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equine arteritis virus; Antiviral therapy; Antimicrobial peptide; Virucidal activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300535

Resíduo úmido de cervejaria na terminação de cordeiros em confinamento e seus efeitos sobre as características da carcaça e dos componentes não carcaça
Provedor de dados: 45
Autores: Carvalho,S.; Frasson,M.F.; Simões,F.S.B.; Bernardes,G.M.C.; Simões,R.R.; Griebler,L.; Pellegrin,A.C.R.S.; Menegon,A.M.; Deponti,L.S.; Severo,M.M.; Mello,V.L.
RESUMO O objetivo deste trabalho foi avaliar o efeito de níveis crescentes de substituição da silagem de sorgo por resíduo úmido de cervejaria sobre as características da carcaça e dos componentes não carcaça de cordeiros terminados em confinamento. Foram utilizados 24 cordeiros machos, não castrados, oriundos de parto simples e mantidos em baias individuais. Os tratamentos foram constituídos por quatro níveis de substituição de silagem de sorgo por resíduo úmido de cervejaria, sendo: 0%; 33,5%; 66,5% e 100% de substituição. Utilizou-se uma relação volumoso:concentrado de 50:50, com base na matéria seca. O concentrado era constituído por milho desintegrado, farelo de soja e mistura mineral. As dietas eram isoproteicas, contendo 18,81% de proteína bruta. Os...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carne ovina; Rendimento; Resíduos agroindustriais; Volumoso.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300742

Desempenho produtivo e características de carcaça de cordeiros Rabo Largo puro e cruzados com Santa Inês
Provedor de dados: 45
Autores: Landim,A.V.; Costa,H.H.A.; Carvalho,F.C.; Costa,A.C.; Alencar,R.T.; Silva,L.N.C.; Gomes,J.S.; Batista,A.S.M.; Miyagi,E.S.; Lima,L.D.
RESUMO Objetivou-se avaliar o efeito do cruzamento entre ovinos nativos no desempenho e características da carcaça. Foram utilizados vinte cordeiros, machos, inteiros, com idade inicial de quatro meses, e peso médio inicial 19,0±5,11, distribuídos em dois grupos genéticos: Rabo Largo (RL) e Santa Inês x Rabo Largo (F1SI x RL), em um delineamento inteiramente ao acaso. Os animais foram terminados em regime de confinamento durante 70 dias. Os cordeiros F1SI x RL apresentaram maiores pesos ao desmame, ao abate, do corpo vazio, das carcaças quente e fria, e maior rendimento biológico. Verificaram maiores valores para os parâmetros de morfometria da carcaça para animais F1SI x RL comparados aos animais Rabo Largo (P&lt;0,05). Os pesos da hemi-carcaça e dos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovinos; Cruzamento; Naturalizados; Rendimento de carcaça.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501267

Acid-base balance in sheep with experimentally induced acute ruminal lactic acidosis
Provedor de dados: 45
Autores: Sabes,A.F.; Girardi,A.M.; Zangirolami Filho,D.; Bueno,G.M.; Oliveira,J.A.; Marques,L.C.
ABSTRACT This study aimed to investigate the changes in the acid-base balance of sheep with experimentally induced acute ruminal lactic acidosis (ARA). Ten ewes orally received 15 grams of sucrose per kilogram of body mass. Arterial blood samples for blood gas analysis were obtained at the following intervals: before the induction of ARA (control), and 2, 4, 6, 8, 10, 12, 16, 20, 24, 28, 32, 36, 48, 72, 96, 120 and 144 hours after sucrose administration. Urine samples for pH measurement were obtained at the following times: -15 days, -7 days, and immediately before sucrose administration, then at 24, 48, 72, 96, 120 and 144 hours. Thereafter, both blood and urine samples were obtained on the 2nd, 3rd, and 4th following weeks. From 4 hours after the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood gas analysis; Metabolic acidosis; Santa Inês.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300637

Mieloma múltiplo em cão com apresentação clínica atípica de paralisia facial bilateral: relato de caso
Provedor de dados: 45
Autores: Santos,R.S.; Luz,C.C.; Rocha,V.M.; Larangeira,D.F.; Barrouin-Melo,S.M.
RESUMO Objetivou-se com o presente trabalho relatar um caso de mieloma múltiplo (MM) em uma cadela com apresentação clínica atípica de rigidez da musculatura facial. Foram realizados hemogramas seriados, exames bioquímicos, sumário de urina, sorologia para leishmaniose, radiografias de crânio, citologia de medula óssea e eletroforese de proteínas séricas. O infiltrado plasmocitário em medula óssea &gt;20%, a gamopatia monoclonal e as lesões compatíveis com lise óssea, observados no mielograma, eletroforese de proteínas e exame radiográfico, respectivamente, foram determinantes para conclusão diagnóstica de MM. A doença pode ter uma apresentação clínica variável em cães e representar um desafio ao diagnóstico na clínica de animais de companhia,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neoplasia; Canino; Apresentação atípica; Diagnóstico diferencial.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501225

Características produtivas, carcaça, cortes e resposta imune humoral de frangos de corte alimentados com diferentes fontes de óleo e vitamina E
Provedor de dados: 45
Autores: Barbosa Filho,J.A.; Soares,A.L.; Santos,M.C.; Venancio,E.J.; Almeida,M.; Bueno,F.R.; Shimokomaki,M.; Oba,A.
RESUMO A adição de óleos na dieta de frangos de corte proporciona muitas vantagens, visto que, dependendo do perfil de ácidos graxos, pode melhorar o desempenho e atuar como estimulante do sistema imune. Assim, este estudo teve como objetivo avaliar as características produtivas, o rendimento de carcaça, os cortes e a resposta imune humoral de frangos de corte alimentados com diferentes fontes de óleos e vitamina E. Foram utilizados 312 pintainhos de corte machos da linhagem Cobb com um dia de idade, distribuídos em delineamento inteiramente ao acaso, com oito repetições compostas de 13 aves por parcela experimental. Os tratamentos experimentais consistiram em óleo de soja, óleo de canola e óleo de canola mais adição de vitamina E. As variáveis analisadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aves; Óleo de canola; Óleo de soja; Tocoferol.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200497

Osteocondromatose em gato: relato de caso
Provedor de dados: 45
Autores: Winter,S.; Muller,T.R.; Ferian,P.E.; Souza,L.P.; Luciani,M.G.; Porto,C.; Serakides,R.; Mai,W.
RESUMO A osteocondromatose é caracterizada por nódulos únicos ou múltiplos decorrentes de um crescimento ósseo excessivo benigno. É encontrada em cães, gatos, equinos e humanos. Em felinos, tem maior incidência dos dois aos quatro anos de idade. A etiologia em gatos está relacionada ao vírus da leucemia felina, e também já foi encontrada relação com o fibrossarcoma. A manifestação clínica depende do local acometido e do tamanho da lesão. O diagnóstico definitivo é por meio de histopatologia e o prognóstico é desfavorável, pois ocorrem muitas recidivas. Este relato de caso objetiva descrever a apresentação dessa enfermidade em um felino jovem.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Felino; Osteocondromatose; Radiologia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501152

Acoustic radiation force impulse (ARFI) elastography of adrenal glands in healthy adult dogs
Provedor de dados: 45
Autores: Fernandez,S.; Feliciano,M.A.R.; Borin-Crivellenti,S.; Crivellenti,L.Z.; Maronezi,M.C.; Simões,A.P.R.; Silva,P.D.A.; Uscategui,R.R.; Cruz,N.R.N.; Santana,A.E.; Vicente,W.R.R.
ABSTRACT To describe the ARFI elastography in the evaluation of the adrenal glands in adult dogs, to evaluate the stiffness of adrenal parenchyma and to determine the qualitative and quantitative standards of the ARFI technique, which have not yet been described in veterinary medicine. Sixty adrenal glands from thirty healthy adult dogs were evaluated by B-mode and qualitative and quantitative ARFI elastography to assess the stiffness of healthy parenchyma and to determine the quality and quantity (shear velocity) standards of ARFI technique in body, cranial and caudal adrenal poles. Findings of ultrasonography evaluations were normal. Qualitative elastography showed that adrenal glands were not deformable and presented homogeneous middle-gray areas. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Adrenal; Ultrasound.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200340

Avaliação hematológica e hemogasométrica de potros nascidos de éguas com placentite ascendente
Provedor de dados: 45
Autores: Santos,R.S. dos; Corrêa,M.N.; Araújo,L. O. de; Pazinato,F.M.; Feijó,L.S.; Curcio,B.R.; Ferreira,R.C.; Nogueira,C.E.W.
RESUMO A placentite é a principal causa de partos prematuros, aborto e nascimento de potros comprometidos, podendo causar hipóxia e septicemia. A hematologia e a gasometria venosa fornecem informações importantes para o monitoramento da saúde de potros nascidos de éguas com placentite. O objetivo deste trabalho foi descrever os valores hematológicos e hemogasométricos durante as primeiras 24h de vida em potros nascidos de éguas mestiças Crioulas submetidas à indução experimental de placentite, com diferentes graus de maturidade. Foram utilizados 16 potros nascidos de éguas submetidas à indução experimental de placentite, divididos em três grupos de acordo com o grau de maturidade: prematuro (n=8), dismaturo (n=4) e a termo (n=4). Foram realizadas coletas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Potros; Maturidade; Hematologia; Gasometria; Placentite ascendente.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100048

Assessment of ultrasonographic and endoscopic changes in dogs with gastrointestinale disorders
Provedor de dados: 45
Autores: Malancus,R.N.; Malancus,C.M. Tofan.
ABSTRACT The study has been conducted over a period of 4 years, on a total number of 133 dogs, all of those expressing gastrointestinal disorders. Ultrasound and endoscopic examinations were performed in all dogs in order to assess any significant correlations between ultrasonographic and endoscopic findings. The results confirm a significant correlation between the presence of diarrhoea and increased thickness of the large bowel wall, with P&lt;0.5. Another extremely significant correlation we observed is the one between increased thickness of large bowel wall and loss of layering at this level, with P&lt;0.5. Upper GI endoscopy revealed that dilated lacteals in the duodenum are significantly associated with the presence of diarrhoea, P&lt;0.5 and, more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dogs; Gastrointestinal tract; Ultrasound; Endoscopy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601451

Intestinal intussusception secondary to enteritis caused by Pythium insidiosum in a bitch: case report
Provedor de dados: 45
Autores: Firmino,M.O.; Frade,M.T.S.; Alves,R.C.; Maia,L.Â.; Olinda,R.G.; Ximenes,R.G.; Souza,A.P.; Dantas,A.F.M.
ABSTRACT We report a case of intestinal intussusception secondary to enteritis caused by Pythium insidiosum infection in a 1-year-old mixed breed bitch that died after a 30-day history of bloody diarrhea, anorexia, weight loss, listlessness, dehydration, and pale mucous membranes. Necropsy revealed two areas of intussusception, one jejunum-jejunal and one ileum-cecum-colic. The first intussusception showed slight congestion of the intestinal loop, which was resolved by manual traction, while the second intussusception exhibited thickening, irregular yellow spots, and transmural congestion. Histologically, the jejunum-jejunal segment had ischemic lesions secondary and ileum-cecum-colic intussusception there was also necrotizing, pyogranulomatous enteritis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pythiosis; Pyogranulomatous enteritis; Immunohistochemistry; Intestinal intussusception; Pythium insidiosum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300623

Transposição e anastomose uretral pré-púbica em um cão macho com estenose extensa da uretra intrapélvica
Provedor de dados: 45
Autores: Vives,P.; Braga,F.A.; Rappeti,J.; Milech,V.; Maroneze,B.; Möller,G.; Rausch,S.; Moraes,E.S.; Mazzanti,A.
ABSTRACT We report the use of a new surgical technique in a male dog affected by extensive stenosis of intrapelvic urethra through a antepubic urethral deviation, as an alternative to prepubic urethrostomy and ablation of the external genitalia. The technique consisted initially of orchiectomy, followed by retroumbilical celiotomy, transverse section of the penis in the pre-scrotal region and transposition of this towards the abdominal cavity by making anastomosis to the prostatic urethra. The dog was evaluated clinically and by urethrography retrograde positive contrast for up to four years after the procedure without any clinical signs, changes in urine stream or stenosis image. It is concluded that the pre-pubic urethral transposition is a viable...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Cão; Obstrução uretral; Anastomose; Desvio uretral; Uretrografia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501331

Endometrial transcription of microbial molecular patterns receptors in Gyr and F1 Holstein x Gyr postpartum cows
Provedor de dados: 45
Autores: Martins,T.M.; Muniz,C.S.; Paixão,T.A.; Ruas,J.R.M.; Santos,R.L.; Borges,Á.M.
ABSTRACT Zebu and Holstein x Zebu crossbred have low incidence of uterine infection when compared to Holstein cows. Resistance to uterine infections may be associated with the ability to recognize invading microorganisms. Endometrial transcription of microbial molecular patterns receptors has been investigated in the postpartum period of Holstein cows, but it is completely unknown in Zebu or Holstein x Zebu cows. In this study, 9 Gyr and 12 F1 Holstein x Gyr cows were submitted to endometrial biopsies at the first and seventh days postpartum, with the objective to measure transcription levels of toll-like receptors (TLRs) 1/6, 2, 4, 5, and 9; nucleotide-binding oligomerization domain (NOD)-like receptors 1 and 2; and coreceptors cluster of differentiation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zebu cows; Endometrial biopsy; Innate immunity; Toll-like receptors.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400835

Reinforcement of the pelvic diaphragm using a purse-string suture in dogs: description of technique
Provedor de dados: 45
Autores: Moraes,P.C.; Facin,A.C.; Rosa-Ballaben,N.M.; Zanetti,N.M.; Dias,L.G.G.G.
ABSTRACT Recurrence of perineal hernias is frequent, and is associated to poor identification of anatomical structures during surgery, inadequate suture placement, and failure of physical support of the pelvic diaphragm after surgical reconstruction. The objective of this work is to describe a novel surgical technique for reinforcement of the pelvic diaphragm after performing the internal obturator transposition technique in dogs with perineal hernia.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Hernia; Herniorrhaphy; Recurrence.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100089

Quantification of Treg cells in peripheral blood and lymph nodes of dogs with multicentric lymphoma
Provedor de dados: 45
Autores: Anai,L.A.; Munhoz,T.D.; Semolin,L.M.S.; Reis Filho,N.P.; Terra,E.M.; Jark,P.C.; Fonseca,D.M.; Nogueira,A.F.S.; Tinucci-Costa,M.; Santana,A.E.
ABSTRACT Lymphoma is a malignant tumor characterized by cell proliferation of lymphoid origin and corresponds to 90% of all hematopoietic neoplasms of dogs. Regulatory T cells (Tregs) have been the target of many investigations in oncology due to their potential of down-regulating immune responses, as well as ensuring the maintenance of active mechanisms of tumor suppression. The aims of the present study were to compare the percentage of Tregs in peripheral blood between dogs with multicentric lymphoma and healthy animals, together with the percentage of Tregs in peripheral blood and lymph nodes of dogs with multicentric lymphoma. Twenty-six animals were enrolled in the study: 10 healthy dogs comprised the control group (CG) and 16 dogs with multicentric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Regulatory T cells; Canine; Lymphoma; Foxp3.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601496

Glicerina associada à ureia na terminação de bovinos: parâmetros ruminais, digestibilidade e massa microbiana
Provedor de dados: 45
Autores: D'Aurea,A.P.; Ezequiel,J.M.B.; D'Aurea,E.M.O.; Fávaro,V.R.; Homem Júnior,A.C.; Cleef,E.H.C.B. Van; Paschoaloto,J.R.; Almeida,M.T.C.
RESUMO O objetivo desta pesquisa foi verificar a combinação de glicerina com ureia, quanto aos parâmetros ruminais, à digestibilidade e à qualidade da massa microbiana. O trabalho foi conduzido na Unidade Animal de Estudos Digestivos e Metabólicos, pertencente à Faculdade de Ciências Agrárias e Veterinárias-FCAV/Unesp, Câmpus de Jaboticabal. Seis animais da raça Nelore providos de cânulas ruminais foram utilizados para verificar os parâmetros pH, nitrogênio amoniacal, a digestibilidade e a massa microbiana, distribuídos em quadrado latino 6x6. Seis dietas com energia metabolizável e proteína bruta semelhantes foram formuladas, utilizando-se a proporção volumoso:concentrado de 30:70. O volumoso utilizado foi silagem de milho. Os concentrados utilizados...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Glicerol; Microrganismo; Rúmen.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100146

Coleta de células progenitoras periféricas por aférese automatizada em equino: relato de procedimento
Provedor de dados: 45
Autores: Bernardo,J.O.; Escodro,P.B.; Notomi,M.K.; Roveri,E.G.; Nascimento,T. Gomes do.
ABSTRACT The biotechnology used in tendon, bone and joint recoveries in Equine Medicine has improved in recent years. The most used are platelet rich plasma and stem cells from adipose tissue and bone marrow. However, recent studies have shown that stem cells can be found in the bloodstream, also named peripheral blood progenitor cells (CPP). This note aims at reporting the feasibility of automated collection of CPP in horses. The procedure was conducted in an equine, female, Quarter Horses, 2 years old, 385kg. The automated collection of CPP was conducted using apheresis equipment Fresenius- Kabi coupled to C4Y kit. The procedure lasted two hours and 30 minutes without complications, processing 5054mL of whole blood and obtaining 351mL of CPP. Upon...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Equino; Célula-tronco; Célula progenitora periférica.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100259

Parâmetros hematológicos e perfil bioquímico renal de cordeiros nascidos a termo e prematuros
Provedor de dados: 45
Autores: Feitosa,F.L. F.; Alcindo,J.F.; Narciso,L.G.; Bovino,F.; Souza,N.C. de; Mendes,L.C.N.; Peiró,J.R.; Perri,S.H.V.; Avila,L.G.
RESUMO O objetivo do presente estudo foi avaliar as variáveis hematológicas e o perfil bioquímico renal sérico de cordeiros nascidos a termo e prematuros do nascimento às 48 horas de vida, bem como verificar a influência da dexametasona sobre tais variáveis. Foram constituídos quatros grupos experimentais: PN (cordeiros nascidos de parto normal, n=15, média de 146 dias); PNDEX (cordeiros nascidos de parto normal cujas mães receberam 16mg de dexametasona aos 141 de gestação, n=8, média de 143 dias); PRE (cordeiros prematuros nascidos de cesarianas aos 138 dias de gestação, n=10) e PREDEX (cordeiros prematuros nascidos de cesarianas aos 138 dias de gestação cujas mães receberam 16mg de dexametasona dois dias antes, n=9). Os valores médios do volume globular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovinos; Bioquímico; Hematologia; Prematuros.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300627

Principais causas de condenação de fígado bovino em estabelecimento sob Serviço de Inspeção Federal na Zona da Mata mineira
Provedor de dados: 45
Autores: Souza,S.P.; Klem,M.C.A.; Costa,K.P.; Silva,L.F.
RESUMO Neste trabalho, foi avaliada a prevalência das principais causas de condenação de fígado bovino em abatedouro frigorífico sob Serviço de Inspeção Federal, situado na Zona da Mata mineira. Para obtenção dos dados, foram consultadas fichas relativas ao movimento mensal de abate de bovinos e de causas de condenação, no período compreendido entre 2007 e 2013, no referido estabelecimento. Durante esse período, foram abatidos 150.752 bovinos, e a prevalência de condenação hepática entre os anos variou de 9,38% a 14,09%. As principais patologias envolvidas foram abscesso, telangiectasia e fasciolose, responsáveis por 32,03%, 29,20% e 21,95% das condenações, respectivamente. Além disso, foi observada tendência de redução na frequência de condenação por...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inspeção de carnes; Saúde pública; Miúdos; Impacto econômico.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000401054

Use of collard green stalks as environmental enrichment for cockatiels ( Nymphicus hollandicus ) kept in captivity
Provedor de dados: 45
Autores: Carvalho,T.S.G.; Saad,C.E.P.; Alvarenga,R.R.; Ferreira,W.M.; Assis,V.D.L.; Pereira,V.M.; Scalon,J.D.; Silva,J.P.; Zangeronimo,M.G.
ABSTRACT The objective of this study was to evaluate the influence of collard green stalks as environmental enrichment on the behavior of cockatiels (Nymphicus hollandicus) maintained in captivity. Sixteen birds were housed individually in cages and fed a commercial diet for parrots and seed mix, with water ad libitum during 12 days in climatic chamber with temperature and relative humidity simulating tropical conditions. The animals (n = 8) were divided into two groups, control and enriched, and the experimental period was divided into two phases (during and after enrichment) of four days each. The collard green stalks were used as enrichment only during the first period of the experiment, daily changed and maintained only during the day. The stalks...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Animal welfare; Captive animals; Food enrichment; Psittacine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300718

A importância dos exames neurológico e radiográfico no diagnóstico de lesões cervicais em equino: relato de caso
Provedor de dados: 45
Autores: Rivera,G.G.; Bueno,G.M.; Paula,V.B.; Santo,M.Q.P.; Matsui,A.; Escoba,A.; Vasconcelos,R.O.; Canola,J.C.; Canola,P.A.; Lacerda-Neto,J.C.
RESUMO As lesões vertebrais cervicais são relativamente comuns nos equinos. No entanto, são poucas as descrições a respeito desse tema na literatura. Acredita-se que esse fato se deva, em parte, às limitações relacionadas ao diagnóstico. Em virtude de um traumatismo cervical, o animal pode apresentar sinais clínicos de paresia e paraplegia até tetraparesia ou tetraplegia, que podem culminar em estado comatoso e, eventualmente, em morte. Esses sinais clínicos podem ser detectados no exame físico, porém, quando associado à imaginologia (avaliação radiográfica), permite a obtenção de diagnóstico mais preciso da lesão. Consequentemente, um prognóstico mais adequado pode ser estabelecido para o paciente. Em face do exposto, apresenta-se o caso de uma égua...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cavalo; Compressão medular; Fratura; Imaginologia; Pescoço.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601413

Gamma radiation treatment applied to microbial decontamination of products derived from eggs collected from the retail market in São Paulo
Provedor de dados: 45
Autores: Aquino,S.; Lui,C.C.; Corrêa,B.
ABSTRACT The quality of products derived from eggs depends on the quality of the raw material source and the industrial production. The contamination by fungi and bacteria can occur after exposure of the product in the retail market. The objective of this study was to evaluate the microbiological quality of 60 samples of derivated egg products and evaluate the effects of gamma radiation of cobalt-60, using the dose of 5 and 10 kGy, for decontamination of products collected in the retail market in the São Paulo city. The bacterial count was performed by the most probable number (MPN) and the fungal counts by serial dilution after plating surface. It was observed a decrease in the humidity and water activity (Aw) values of irradiated whole egg powder and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria; Sterilization; Fungi; Irradiation; Powdered egg.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601683

Achados ultrassonográficos da glândula mamária de cabras naturalmente infectadas com o vírus da artrite encefalite caprina
Provedor de dados: 45
Autores: Vianna,R.S.; Batista,C.F.; Gomes,R.C.; Santos,K.R.; Souza,F.N.; Pogliani,F.C.; Libera,A.M.M.P.D.
RESUMO A artrite encefalite caprina é uma virose que está distribuída mundialmente nos rebanhos. Na forma mamária, é predominante a mastite crônica, que pode causar assimetria e endurecimento do úbere, mais conhecida como mastite endurativa crônica, levando à redução na produção leiteira. A ultrassonografia é um bom método de avaliação da glândula mamária, pois consiste em uma técnica não invasiva, rápida e de fácil aplicação. Este estudo objetivou avaliar as características ultrassonográficas (escala de cinza, ecogenicidade e homogeneidade) do parênquima mamário de 20 cabras sororreagentes e 20 não sororreagentes para o vírus da artrite encefalite caprina. Observou-se que o diâmetro médio dos linfonodos retromamários de animais sororreagentes (0,72cm)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caprino; Imagem; Retrovirose; Glândula mamária; Doença crônica.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100065

1,25-dihidroxivitamina-D 3 sobre as características ósseas de frangos de corte fêmeas
Provedor de dados: 45
Autores: Vieites,F.M.; Drosghic,L.C.A.B.; Souza,C.S.; Lima,C.A.R.; Moraes,G.H.K.; Nunes,R.V.; Vasconcellos,C.H.F.; Vargas Júnior,J.G.
RESUMO Objetivou-se avaliar as características dos tibiotarsos de frangos de corte fêmeas. As variáveis analisadas foram os pesos in natura, secos e desengordurados, o comprimento, os diâmetros, a resistência óssea, o índice de Seedor (IS), os percentuais de proteínas colagenosas (PC), as proteínas não colagenosas (PNC), os minerais (cálcio, fósforo, potássio e sódio) e as cinzas. Foram utilizadas 648 aves, da marca comercial Cobb®, em um delineamento em blocos ao acaso, com seis tratamentos e seis repetições, com 18 aves por unidade experimental. Os tratamentos consistiram na suplementação de 0,00; 0,50; 1,00; 1,50; 2,00 e 2,50 μg de 1,25-dihidroxivitamina-D3 (1,25(OH)2D3)/kg de ração. Aos 21 e 35 dias de idade, as aves foram pesadas e uma ave por unidade...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colágeno; Índice de Seedor; Resistência à quebra; Solanum glaucophyllum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501285

Células-tronco mesenquimais aplicadas nas fases inflamatória e proliferativa da cicatrização de feridas cutâneas
Provedor de dados: 45
Autores: Beheregaray,W.K.; Gianotti,G.C.; Oliveira,F.; Terraciano,P.; Bianchi,S.; Vidor,S.; Marcolan,C.F.; Contesini,E.A.; Cirne-Lima,E.O.
RESUMO A cicatrização de feridas é um processo que requer a interação de várias células da derme e epiderme. O objetivo deste trabalho foi avaliar qual o momento da aplicação das células das ADSCs em feridas cutâneas agudas que faria diferença na cicatrização nos primeiros sete dias da lesão. As células-tronco foram isoladas do tecido adiposo de camundongos C57Bl/6 GFP+. Para tanto, foram utilizados 49 camundongos C57Bl/6, divididos em quatro grupos: grupo I (GI/controle; n=14); grupo II (GII; n=14): ADSCs injetadas no d0; grupo III (GIII; n=14): ADSCs injetadas no terceiro dia; e Grupo IV (GIV; n=7): ADSCs injetadas no quinto dia. As avaliações clínicas ocorreram nos dias zero, três, cinco e sete, e as histopatológicas nos dias cinco e sete. Na...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cicatrização cutânea; Fase inflamatória; Fase proliferativa; Células-tronco mesenquimais derivadas de tecido adiposo.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601591

Papillary Adenocarcinoma of the descending colon in a dog: case report
Provedor de dados: 45
Autores: Ferreira,M.G.P.A.; Ribeiro,J.O.; Pascoli,A.L.; Reis-Filho,N.P.; Beluque,T.; Santos,M.Q.P.; Theodoro,S.S.; Feliciano,M.A.R.; Nardi,A.B.; Tinucci-Costa,M.; Moraes,P.C.; Canola,J.C.; Carciofi,A.C.
ABSTRACT The aim of this report was to describe the clinical findings and therapeutic management of a case of papillary adenocarcinoma of the descending colon in a Beagle. The patient presented soft stools, haematochezia, tenesmus, and dyschezia. Clinical examination revealed alterations on the ultrasonographic features of the descending colon suggestive of colitis and neoplasia. Following local mass resection, histopathology analysis revealed mild lymphoplasmocytic enteritis and papillary adenocarcinoma of the colon. Enterectomy for tumoral resection and biopsy of locoregional lymph nodes were carried out. Subsequent to the surgical procedure, it was possible to confirm the previous diagnosis and the tumor was classified as intestinal intraluminal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Intestinal neoplasia; Oncology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400830

Citocentrifugação e métodos convencionais na citologia uterina de éguas em estro e diestro
Provedor de dados: 45
Autores: Jorge,M.L.N.; Orlandi,C.M.B.; Santana,A.E.
RESUMO A citologia uterina consiste em método prático e eficiente para o diagnóstico de afecções uterinas na égua, contribuindo para a conduta terapêutica e o prognóstico quanto à fertilidade das fêmeas. Assim, o objetivo deste trabalho foi comparar diferentes técnicas de coleta de material para citologia uterina em éguas, a fim de se verificarem possíveis diferenças qualitativas e quantitativas e a praticidade na execução das metodologias. Para tanto, 12 éguas multíparas foram submetidas ao exame citológico uterino, durante o estro e o diestro, por meio de escova ginecológica e lavado uterino de baixo volume. Com esse ensaio, observou-se que não houve diferença significativa (P&gt;0,05) no resultado da citologia uterina entre as diferentes técnicas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equino; Endometrite; Neutrófilos; Citologia e útero.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400802

Accuracy of quantitative polymerase chain reaction in samples of frozen and paraffin-embedded healthy skin for the diagnosis of canine visceral leishmaniasis
Provedor de dados: 45
Autores: Campos,M.P.; Madeira,M.F.; Silva,D.A.; Solcà,M.S.; Espíndola,O.M.; Mendes Júnior,A.A.V.; Figueiredo,F.B.
ABSTRACT The purpose of the present work was to evaluate the accuracy of quantitative polymerase chain reaction (qPCR) performed on samples of fresh frozen tissue (FT) and formalin-fixed, paraffin-embedded (FFPE) healthy skin. This is a validation study conducted with samples from 46 dogs from an endemic area in Brazil. After sample collection, DNA extractions were conducted using commercial kits and qPCR was oriented to kinetoplast DNA (kDNA) targets of the Leishmania infantum species. The results obtained for the FFPE samples showed 63.6% sensitivity and 77.1% specificity, whereas those obtained for the FT samples showed 100% and 48.6%, respectively. Poor agreement was observed for the results of the qPCR technique with FT and FFPE samples. Our results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diagnosis; QPCR; Canine visceral leishmaniasis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601443

Avaliação da dexmedetomidina e do tramadol, associados ao midazolam, em gatas anestesiadas com isoflurano e submetidas à ovário-histerectomia
Provedor de dados: 45
Autores: Lemos,V.C.C.; Sande,J.Q.; Barbosa,V.F.; Costa Neto,J.M.; Martins Filho,E.F.; Iwassa,C.H.D.
RESUMO Objetivou-se comparar as alterações cardiorrespiratórias e a analgesia pós-operatória promovidas pela dexmedetomidina e pelo tramadol, quando associados ao midazolam, em felinas. Para tal, foram selecionadas 18 gatas hígidas, divididas em dois grupos randomizados: GDM, tratadas com dexmedetomidina (10µg/kg) e GTM, tratadas com tramadol (2mg/kg), ambos associados a midazolam (0,2mg/kg,) IM. Após 15 minutos, procedeu-se à indução anestésica com propofol (1,46±0,79mL), mantendo-se a anestesia com isoflurano. As felinas foram submetidas à ovário-histerectomia, registrando-se as variáveis cardiorrespiratórias 15 minutos após a MPA (M0), 15 minutos após a indução (M15) e sequencialmente a cada cinco minutos, até o término do procedimento cirúrgico (M20,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Felina; Alfa-2 agonistas; Analgesia; Cardiorrespiratório; Opioide.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601521

Factor analysis as a tool to estimate association among individual proteins and other milk components with casein micelle size and cheese yield
Provedor de dados: 45
Autores: Freitas,D.R.; Souza,F.N.; Fonseca,L.M.; Ladeira,C.V.G.; Santos,V.P.F.; Diniz,S.A.; Silva,M.X.; Haddad,J.P.A.; Cerqueira,M.M.O.P.
ABSTRACT The present study attempted to identify individual milk proteins and other milk components that are associated with casein micelle size (CMS) and dry matter cheese yield (DMCY) using factor analysis. Here, we used 140 bulk tank milk samples from different farms. Milk composition was determined using a Fourier transform infrared equipament. The individual milk proteins were (αS-casein, β-casein, κ-casein, β-lactoglobulin and α-lactoalbumin) measured by their electrophoretic profile. The CMS was estimated by photon correlation spectroscopy, and the DMCY was determined using reduced laboratory-scale cheese production. Factor analysis partitioned the milk components into three groups that, taken together, explain 68.3% of the total variance. The first...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Κ-casein; Αs-casein; Β-casein; Α-lactalbumin; Β-lactoglobulin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501319

Congenital multiple arthrogryposis in bovine
Provedor de dados: 45
Autores: Vrisman,D.P.; Bonato,D.V.; Taira,A.R.; Thomaz,E.R.; Peres,J.A.; Malta,C.A.S.; Cintra,C.A.; Cunha,M.S.; Coutinho,L.N.; Crivellenti,L.Z.; Magalhães,G.M.; Teixiera,P.P.M.
ABSTRACT This report describes an anal atresia, anatomical urethra alteration (slightly caudal to the udder), thickened joints, and changes in the pelvis in a newborn Holstein cow. Visualization of the final portion of the rectum was not possible by perineal access and laparotomy through the right flank was performed in order for abdominal exploration and colostomy attempt. During the surgical procedure visceral rupture and malformations incompatible with life were observed, so surgeons opted for euthanasia and necropsy. Alterations were confirmed in the genitourinary and gastrointestinal tract. The non-formation of the anus caused dilation of the distal portion of the rectum with fecal content retention, which was drained to the body of the uterus, with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anal atresia; Environmental contaminants; Genitourinary malformations; Fetal monstrosity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100010

Comparação de métodos in vitro para a quantificação da digestibilidade da matéria seca e da fibra em detergente neutro de forragens e concentrados
Provedor de dados: 45
Autores: Silva,T.E.; Detmann,E.; Camacho,L.F.; Saliba,E.O.S.; Palma,M.N.N.; Valadares Filho,S.C.
RESUMO Objetivou-se comparar a digestibilidade in vitro da matéria seca (DIVMS) e da fibra em detergente neutro (DIVFDN) de forragens e concentrados obtidos por intermédio das incubadoras DaisyII e TE-150, combinadas com filter bags tipo F57 (Ankon®) ou tecido não-tecido (TNT, 100g/m²), em relação aos valores obtidos utilizando-se o método de Tilley e Terry (1963). Foram utilizadas 25 amostras de alimentos concentrados e 25 de forragens. Não houve diferenças entre filter bags (P&gt;0,39) para a DIVMS de forragens. Maiores valores de DIVMS (P&lt;0,01) foram verificados para a incubadora TE-150 em relação à DaisyII. As estimativas de DIVMS obtidas com incubadoras e filter bags foram superiores (P&lt;0,01) àquelas obtidas com o método Tilley e Terry (1963)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: DaisyII; Filter bags; Repetibilidade; TE-150.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601635

Avaliação da eficiência de cal virgem na inativação de ovos de nematoides - Strongyloides sp.) parasitos de pacas - Cuniculus paca ) criadas em cativeiro
Provedor de dados: 45
Autores: Ribeiro,V.M.F.; Faino,A.L.; Peruquetti,R.C.; Souza,S.F.; Medeiros,L.S.; Karaccas,Y.; Santos.,F.G.A.
RESUMO Criadores de animais silvestres sempre buscam métodos eficientes de manter sua criação. Parasitos intestinais afetam os animais em cativeiro, diminuindo sua sobrevivência e reprodução. Este estudo teve como objetivo avaliar a eficácia do uso de cal virgem na desinfecção do solo e na prevenção da reinfestação de endoparasitos em pacas (Cuniculus paca) em cativeiro. Amostras de solo das baias de criação foram analisadas usando-se o método de Rugai modificado. Duas etapas foram avaliadas: a primeira aos cinco, 45 e 105 minutos após os tratamentos, e a segunda aos sete dias e aos 14 dias após os tratamentos. Os valores de pH das amostras foram verificados após a aplicação de quatro tratamentos. Foram aplicados 400g/m2 de cal virgem a lanço ou 500mL/m2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal silvestre; Desinfecção; Produção; Manejo sanitário.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400989

Transferência de autoenxerto osteocondral para tratamento de osteocondrite dissecante em côndilo femoral de cão
Provedor de dados: 45
Autores: Paes,F.; Ferrigno,C.R.A.; Marinho,P.V.T.; Macedo,A.S.; Bregadioli,T.; Dal-Bó,I.S.; Galeazzi,V.S.; Santos,J.F.; Ferreira,M.P.
RESUMO Na osteocondrite dissecante (OCD), a articulação do ombro é mais comumente afetada, mas o joelho é ocasionalmente lesionado, o que, muitas vezes, passa desapercebido. O tratamento cirúrgico precoce é indicado para remover cartilagem solta, aliviar a dor e minimizar a artrose. Benefícios putativos da transferência de autoenxerto osteocondral em relação às técnicas convencionais incluem a reconstrução exata do contorno subcondral e articular, recobrimento da superfície com cartilagem hialina e criação de uma barreira imediata entre o líquido sinovial e o osso subcondral. O objetivo deste trabalho é relatar a técnica de transferência de autoenxerto osteocondral para o tratamento da osteocondrite do côndilo femoral. Um cão da raça Bull Terrier foi...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Articulação do joelho; Ortopedia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400927

Ocorrência de carrapatos em Tamandua tetradactyla (Linnaeus, 1758) na Caatinga, Nordeste do Brasil
Provedor de dados: 45
Autores: Oliveira,G.M.B.; Martins,T.F.; Pereira,L.C.M.; Nicola,P.A.; Horta,M.C.
RESUMO A Caatinga é um bioma exclusivamente brasileiro e um dos mais diversificados do mundo, abrigando grande variedade faunística. Este estudo objetivou relatar a presença de carrapatos em tamanduás Tamandua tetradactyla (Linnaeus, 1758) atendidos no Centro de Conservação e Manejo de Fauna da Caatinga, Petrolina-PE, Brasil. De fevereiro de 2010 a fevereiro de 2016, 23 T. tetradactyla foram recebidos e inspecionados para avaliação da presença de carrapatos. A identificação foi realizada pela observação das características morfológicas e pela utilização de chaves taxonômicas. Aproximadamente 8,69% (2/23) dos animais apresentavam parasitismo por carrapatos. Os ixodídeos foram encontrados fixados nas regiões ventral e cervical, e identificados como...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tamanduá-mirim; Amblyomma auricularium; Rhipicephalus sanguineus sensu lato; Caatinga; Semiárido.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400865

Consequences of intraoperative spinal cord manipulation in dogs with thoracolumbar intervertebral disc extrusion
Provedor de dados: 45
Autores: Diogo,C.C.; Tudury,E.A.; Bonelli,M.A.; Araújo,B.M.; Figueiredo,M.L. de; Fernandes,T.H.T.; Silva,A.C.; Baraúna Júnior,D.; Santos,C.R.O.; Amorim,M.M.A.; Arias,M.V. Bahr.
ABSTRACT The objective of the present study was to evaluate if extradural contact during hemilaminectomy would cause neurological deterioration in the early and/or late postoperative period in dogs with intervertebral disc extrusion. Nineteen dogs with thoracolumbar intervertebral disc extrusion underwent hemilaminectomy for spinal cord decompression and removal of extruded disc material. Meningeal contacts during surgery were quantified. Paraplegia (with nociception) and paraparesis were observed in 11/19 and 8/19 of dogs, respectively, before surgery. At the end of our study, only two (2/19) had paraplegia and one (1/19), paraparesis. There were more extradural contacts when extruded intervertebral disc material was at a ventrolateral position....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Disc herniation; Hemilaminectomy; Spinal cord.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601473

Involvement of mast cells, CD68+ and VEGF+ expressions in response to Himatanthus drasticus commercial latex in mice wound healing model
Provedor de dados: 45
Autores: Santos,G.J.L.; Ferreira,T.C.; Rodrigues,A.L.M.; Freitas,J.C.C.; Morais,S.M.; Girão,V.C.C.; Nunes-Pinheiro,D.C.S.
ABSTRACT This study aimed to evaluate Himatanthus drasticus latex in a mice wound healing experimental model. Animals were divided into four groups (n=7) according to the treatments: GI - saline 0.9% (control), GII - mineral oil (vehicle), GIII - H. drasticus commercial latex (HdCL) and GIV - H. drasticus mixed isolated fraction (MIF, 1 mg/mL). The treatments were applied topically once daily, 50 µL for 14 consecutive days. Macroscopic lesions were evaluated, considering parameters such as swelling, redness, granulation tissue and reepithelialization. VEGF+, CD68+ expressions and mast cells (Toluidin blue stain) were evaluated. HdCL induced higher contraction and exuberant granulation tissue (P &gt; 0.05). HdCL showed a mild inflammatory process while MIF...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Latex; Apocinaceae; Wound healing; Angiogenesis; Inflammatory infiltrate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300513

Avaliação histológica e por microscopia eletrônica de varredura da biocerâmica de fosfato de cálcio nano-estruturada micromacro porosa em grânulos em defeito crítico de rádio de coelhos
Provedor de dados: 45
Autores: Aristizabal,O.L.P.; Castro,J.A.V.; Vargas,M.I.V.; Rezende,C.M.F.
RESUMO Objetivou-se avaliar, histologicamente e por microscopia eletrônica de varredura (MEV), a evolução de defeitos críticos experimentais em rádio de coelhos preenchidos ou não com biocerâmica fosfocálcica nanoestruturada micromacro porosa em grânulos. Utilizaram-se 70 coelhos, Nova Zelândia, adultos jovens, machos, e realizou-se um defeito crítico nos rádios. Os membros constituíram os grupos: GI, biocerâmica lenta, GII, biocerâmica moderada e GIII, controle negativo. Após cada período experimental, os animais foram sacrificados, e os rádios coletados. As avaliações histológicas foram realizadas aos oito, 15, 30, 45, 60, 90 e 120 dias, e as análises de MEV aos 60, 90 e 120 dias. Histologicamente, observou-se processo de reparação óssea mais adiantado...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Defeito crítico; Hidroxiapatita; Fosfato de cálcio; Radio.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601539

Gross and histologic features of gastritis due to Ophidascaris arndti in tropical rattlesnakes ( Crotalus durissus )
Provedor de dados: 45
Autores: Mello,É.M.; Salgado,B.S.; Cassali,G.D.; Guimarães,M.P.
ABSTRACT The tropical rattlesnake (Crotalus durissus) is a snake of great importance for biomedical industry since its poison is used for the production of antiophidic serum and researches. Several conditions related to animal health, such as diseases and parasites, which can promote the reduction of poison production by these snakes should be investigated. Accordingly, the aim of this study was to characterize the gross and microscopic lesions related to the presence of Ophidascaris arndti in stomachs of tropical rattlesnakes. The gastrointestinal tract of thirty-five South American rattlesnakes captured in Southeastern region of Brazil were analyzed and nineteen animals showed infestation by the parasites, found in the small intestine and, especially, in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snake; Parasitic granuloma; Parasitic gastritis; Nematoda.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200415

Caracterização do imunofenótipo das células envolvidas no processo fibrótico de fígados bovinos cronicamente infectados por Fasciola hepatica
Provedor de dados: 45
Autores: Sousa,D.R.; Silva,M.A.; Sequeira,J.L.; Madureira,A.P.; Nunes,L.C.
RESUMO A fasciolose é uma doença parasitária causada por trematódeo do gênero Fasciola sp., que pode ocasionar fibrose hepática. Objetivou-se caracterizar o imunofenótipo das células que participam da fibrogênese de fígados bovinos frente à infecção por F. hepatica. Foram utilizados fragmentos dos lobos direito e esquerdo de 74 fígados bovinos com fasciolose. Os fragmentos foram submetidos a processamento histológico, coloração com tricrômico de Masson e imuno-histoquímica. Utilizaram-se análise estatística descritiva e teste de correlação de Spearmann com 5% de probabilidade. Na classificação do grau de fibrose, observou-se prevalência do grau 1, com associação positiva e significativa entre o grau de fibrose e o lobo hepático esquerdo (ρ=0,41;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovino; Fasciolose; Fibrogênese; Imuno-histoquímica.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300570

Compressão de medula espinhal ocasionada por melanoma em cavalo de pelagem castanha
Provedor de dados: 45
Autores: Busato,E.M.; Sousa,R.S.; Silva-Meirelles,J.R.; Castro,M.L.; Deconto,I.; Dornbusch,P.T.
ABSTRACT This paper describes a case of malignant melanoma in brown coat horse, which had ataxia and proprioceptive deficits in hind limbs, progressing to permanent decubitus. The animal was euthanized and the final diagnosis was based on necropsy and histopathology. At necropsy different masses and / or nodules in skeletal muscle, bone, abdominal cavity, lungs, heart, spleen, liver, adrenal gland, lymph nodes, brain and cerebellum were found. Neurological clinical signs presented by the animal were justified by spinal cord compression caused by melanocytic mass invading the medullary canal of the flow segment of the thoracic spine (between 15th and 18th thoracic vertebrae). This is the first case report of melanoma leading to spinal cord compression in a...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Ataxia; Neoplasia equina; Melanócitos.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501346

Avaliação metabólica e hemodinâmica de dois protocolos de sedação prolongada em cães
Provedor de dados: 45
Autores: Regalin,D.; Gehrcke,M. I.; Comassetto,F.; Regalin,B.D.C.; Rosa,L.; Padilha,V.S.; Lima,I.T.; Moraes,A.N.; Oleskovicz,N.
RESUMO Objetivou-se determinar a viabilidade de dois protocolos de sedação para ventilação prolongada em cães e seus efeitos hemodinâmicos e metabólicos. Doze cães, alocados aleatoriamente em dois grupos (n=6), receberam infusão contínua de midazolam (0,5mg/kg/h), fentanil (10µg/kg/h) e propofol (18mg/kg/h) no GMF ou cetamina (0,6mg/kg/h), morfina (0,26mg/kg/h) e propofol (18mg/kg/h) no GCM, durante 24 horas. Os cães foram ventilados mecanicamente com FiO2 de 40%, mantendo-se a normocapnia. A FC diminuiu 32% no GMF e 34% no GCM ao longo do tempo, reduzindo o IC em 24% no GMF e em 29% no GCM. A CaO2, o CvmO2, a DO2 e o VO2 diminuíram no GCM (5%, 16%, 31% e 7%) e no GMF (4%, 19%, 26% e 15%), respectivamente. A TEO2 aumentou 32% no GMF e 36% no GCM, sem...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ventilação mecânica; Propofol; Cetamina; Midazolam; Opioides.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501215

Mechanical analysis of transversal iliac fracture stabilization using dynamic compression plate or screws and PMM in polyurethane bone model
Provedor de dados: 45
Autores: Prada,T.C.; Shimano,A.C.; Chung,D.; Karcher,D.E.; Minto,B.W.
ABSTRACT Pelvic fractures correspond to 20 to 30 % of the fractures observed in dogs. Complete fractures, especially with bone axis deviation should be surgically treated. The mechanical study of surgical techniques is of utmost importance to assess the best way of treating these injuries. This study compared, biomechanically, the use of a dynamic compression plate (DCP) and screws (group 1) or screws and polymethylmethacrylate (PMMA) (group 2) to stabilize an iliac fracture using a static test. Sixteen canine synthetic hemi-pelvises (test specimens) with a transverse iliac osteotomy were used. After fixation with implants, a load was applied to the acetabulum until failure. Group 1 maximal compressive load was 133.9±18.60 N, displacement at yield...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pelvis; Stabilization; Biomechanical; Fracture.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400901

Aparência tomográfica dos discos intervertebrais mineralizados em cães da raça Dachshund Miniatura
Provedor de dados: 45
Autores: Baraúna Júnior,D.; Fernandes,T.H.T.; Silva,I.C.C.; Bonelli,M.A.; Santos,C.R.O.; Amorim,M.M.A.; Costa,F.S.; Tudury,E.A.
RESUMO Objetivou-se com este trabalho descrever os aspectos de tomografia computadorizada de discos intervertebrais de cães da raça Dachshund com um ano de idade, assim como quantificar, qualificar e localizar a mineralização nos componentes do DIV e no espaço intervertebral da coluna vertebral. Dez cães dessa raça, com um ano de idade, foram submetidos à tomografia computadorizada (TC). Nas imagens de reconstrução sagital dos animais, procedeu-se à identificação de sete DIV em cada animal, entre as vértebras T9 e L3, totalizando a análise de 70 DIV. Entre os DIV mineralizados, a presença da alteração foi determinada quanto à localização no núcleo pulposo (NP), no anel fibroso (AF) e em AF/NP. Dos 70 DIV avaliados, 45 foram considerados como mineralizados....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Coluna vertebral; Diagnóstico por imagem; Radiografia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400941

Estimação de valores genéticos para codornas europeias em função dos níveis da relação treonina: lisina da dieta: do nascimento aos 21 dias de idade
Provedor de dados: 45
Autores: Faria,G.Q.; Bonafé,C.M.; Souza,K.A.R.; Silva,M.A.; Costa,L.S.; Lima,H.J.D.; Campos,F.G.; Silva,R.B.; Silva,A.A.; Tarocô,G.; Rocha,G.M.F.; Miranda,J.A.
RESUMO O presente trabalho foi realizado com o objetivo de avaliar a sensibilidade dos valores genéticos dos pesos corporais e as características de carcaças de codornas europeias às mudanças do gradiente ambiental (níveis da relação treonina com a lisina das dietas), do nascimento aos 21 dias de idade, por meio de modelos de regressão aleatória com diferentes classes de variância residual. Os dados utilizados neste estudo são provenientes de 915 codornas de corte da linhagem LF1 e 839 da linhagem LF2, pertencentes ao Programa de Melhoramento Genético da Universidade Federal dos Vales do Jequitinhonha e Mucuri. Foram avaliados os pesos corporais e os rendimentos da carcaça das aves. As sensibilidades dos valores genéticos às mudanças nos níveis da relação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Codornas europeias; Sensibilidade de valor genético; Heterogeneidade de variância residual.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100214

Tumor da célula da granulosa associado à piometra em uma gata de sete meses
Provedor de dados: 45
Autores: Sampaio,A.D.P.; Bittencourt,R.F.; Maggitti Júnior,L.P.; Santos,E.S.; Silva,M.A.A.; Moreira,E.L.T.; Lima,M.C.C.
RESUMO As neoplasias ovarianas em gatas são raras e, quando relatadas, estão associadas a animais senis, assim como a piometra de causa não iatrogênica. O objetivo deste trabalho foi relatar o caso de uma gata jovem com neoplasia ovariana, tumor de células da granulosa associado ao complexo hiperplasia endometrial cística/piometra (HECP). O animal foi atendido no setor de Reprodução Animal e Obstetrícia Veterinária (RAOV) de um Hospital Veterinário Escola, com histórico de monta natural recente, anorexia, êmese, polidipsia, poliúria e descarga vaginal purulenta. Ao exame físico, observou-se apatia, mucosas ictéricas, aumento de volume da região abdominal e presença de secreção vaginal purulenta. À ultrassonografia, foi visibilizado conteúdo ecogênico no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Felino; Tumor da granulosa; HECP; Neoplasia; Ovário.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501145

Morfologia e dinâmica testicular em cutias - Dasyprocta prymnolopha ) adultas
Provedor de dados: 45
Autores: Menezes,D.J.A.; Silva,A.R.N.; Vieira,F.A.S.; Silva Neto,R.B.; Oliveira,M.F.; Illera,M.J.; Assis Neto,A.C.; Santos,J.R.S.; Carvalho,M.A.M.
RESUMO Este trabalho objetivou apresentar a caracterização da morfologia do testículo de cutia (Dasyproctaprymnolopha) macho, com o intuito de colaborar com o conhecimento da morfofisiologia reprodutiva da espécie. Foram utilizados testículos de 47 animais, com idade entre um e dois anos, pesos homogêneos (2,08 ± 0,23kg), oriundos do Núcleo de Estudos e Preservação de Animais Silvestres do Centro de Ciências Agrárias da Universidade Federal do Piauí. As estruturas foram dissecadas, descritas, e fragmentos foram processados para a microscopia de luz, sendo, posteriormente avaliada a atividade gonadal. Observou-se que os testículos são órgãos elipsoides alongados, podendo ser encontrados na região inguinal ou na cavidade abdominal, não apresentando um...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Roedor; Espermatogênese; Histricomorpha; Reprodução.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400997

Aspectos citoquímicos e morfológicos de elementos sanguíneos das serpentes dos gêneros Bothrops e Crotalus mantidas em cativeiro no serpentário do Instituto Vital Brasil
Provedor de dados: 45
Autores: Kindlovits,L.M.; Temoche,L.F.C.; Machado,C.; Almosny,N.R.P.
RESUMO A criação de serpentes peçonhentas em cativeiro vem se tornando prática cada vez mais difundida no país. Dessa forma, o conhecimento do manejo e da clínica de serpentes se torna prioritário, a fim de permitir maior sobrevida dos animais. No que concerne a serpentes peçonhentas, dados hematológicos já foram descritos na literatura, no entanto, apesar dos recursos utilizados, os dados analisados ainda são insipientes. Com o objetivo de caracterizar, morfologicamente, as células sanguíneas e de esclarecer diferenças morfológicas e funcionais, foram coletadas amostras de sangue de 50 serpentes pertencentes ao plantel do Instituto Vital Brasil. Foram confeccionados e analisados por microscopia óptica e citoquimicamente os esfregaços sanguíneos corados...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citoquímica; Eosinófilos; Ofídios.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300667

Duddingtonia flagrans no controle de nematoides gastrintestinais de equinos em fases de vida livre
Provedor de dados: 45
Autores: Buzatti,A.; Santos,C.P.; Fernandes,M.A.M.; Yoshitani,U.Y.; Sprenger,L.K.; Molento,M.B.
RESUMO O objetivo deste estudo foi avaliar a atividade predatória do fungo Duddingtonia flagrans contra larvas infectantes (L3) de nematoides gastrintestinais na pastagem e no bolo fecal de equinos, em um período de 21 dias. O delineamento experimental foi inteiramente ao acaso, com três grupos tratados (G1, G2 e G3) e um controle (C), com oito animais/grupo. Os tratados receberam 1,5x105; 3x105 e 6x105 clamidósporos de D. flagrans/kg-1peso vivo animal, G1, G2 e G3, respectivamente, durante 21 dias, com administração a cada três dias. Foram delimitadas 36 áreas de 1m2 cada, equivalendo a repetições em triplicata para cada grupo. As fezes foram coletadas dos animais nos dias 0 (D0), 15 (D15) e 30 (D30 = sete dias após a última administração dos tratamentos)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Duddingtonia flagrans; Fungos nematófagos; Equus caballus; Nematoides.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200364

Tiller density and tillering on Brachiaria brizantha cv. Marandu pastures inoculated with Azospirillum brasilense
Provedor de dados: 45
Autores: Pedreira,B.C.; Barbosa,P.L.; Pereira,L.E.T.; Mombach,M.A.; Domiciano,L.F.; Pereira,D.H.; Ferreira,A.
ABSTRACT The objective of this study is to verify the population density and the dynamics of tillering in the Marandu palisade grass sward subjected to nitrogen (N) fertilization strategies, characterized by the N supply via urea or bacterial inoculant (Azospirillum brasilense). The treatments comprised of four nitrogen fertilization strategies: (A) Without fertilization, (B) 80 kg N/ha, (C) inoculant (A. brasilense), and (D) 80 kg N/ha + inoculant, distributed in a randomized complete block design, with three replications. The nitrogen supply strategies were evaluated during six periods: October, November, and December (2012) as well as January, March, and April (2013). The nitrogen dose or inoculant had no effect on the tiller appearance rate (TAR),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diazotrophic bacteria; Nitrogen biological fixation (NBF); Stability index; Tillers; Urea.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000401039

Desenvolvimento e avaliação de equipamento de tração, para redução de fraturas de ossos longos de cães
Provedor de dados: 45
Autores: Tudury,E.A.; Souza,A.F.A.; Fernandes,T.H.T.; Araújo,B.M.; Oliveira,L.M.; Amorim,M.M.A.; Espíndola,C.R.S.; Silva,I.C.C.
RESUMO Fraturas costumam ocorrer com encavalgamento das extremidades ósseas, dificultando, assim, sua redução. Esta pesquisa teve como objetivo desenvolver um equipamento de tração esquelética a ser utilizado em caninos acometidos de fraturas de ossos longos. Foram utilizados 21 cães de raças variadas, pesando entre dois e 27kg, com idade entre dois meses e 11 anos, com fraturas diafisárias ou metafisárias ocorridas entre três e 24 dias. Enquanto a fixação do corpo do paciente à mesa foi efetuada com cintas de náilon, a força de tração aplicada ao longo do eixo ósseo do membro fraturado foi realizada mediante cintas de náilon ou pinos transfixados e estribos (sendo os pinos implantados na epífise distal do osso fraturado), com a força de tração medida por...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Fraturas; Redução; Equipamento.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400933

Reference values for biochemical analytes in Mexican dairy farms: interactions and adjustments between production groups
Provedor de dados: 45
Autores: García,C.A.C.; Prado,F.M.G.; Galicia,L.L.; Borderas,T.F.
ABSTRACT Blood samples of 189 healthy Holstein cows classified as high-producers, low-producers, or dry cows, were collected with the purpose of establishing reference values for several biochemical analytes in Mexican dairy farms. Mean values were calculated for: 1) Energy profile: glucose, cholesterol, triglycerides, β-hydroxybutyrate, and non-esterified fatty acids, 2) Protein profile: urea, albumin, globulin, and total protein, 3) Mineral profile: calcium, phosphorus, sodium, potassium, magnesium, chlorine, carbon dioxide, bicarbonate, and anion gap, and 4) Hepatic enzyme: γ-glutamyl transpeptidase. The resulting data set was analyzed using Gaussian distribution and descriptive statistics. Confidence intervals of 95% were established. The linear...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dairy cow; Blood chemistry; Metabolic profile.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200445

Selection of autochtone probiotic for Astyanax bimaculatus
Provedor de dados: 45
Autores: Jatobá,A.; Moraes,A.V.; Steckert,L.D.; Jesus,G.F.A.
ABSTRACT This study aimed to isolate native lactic acid bacteria of yellow tail lambari (Astyanax bimaculatus) and evaluate their effect on host microbiota and gut morphology, as well as survival after experimental challenge. The isolated bacterial strains were evaluated for their inhibition against pathogenic bacterial strains in vitro, and the strain with highest inhibitory ability was molecularly identified as Lactobacillus spp. For in vivo testing, eighty fish were distributed in ten tanks equipped with a recirculation system. The experimental units were divided into two treatments: fish fed with Lactobacillus spp. supplement and fish fed an unsupplemented diet (control). After 30 days, guts from three fish from each experimental unit were pooled for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactobacillus; Yellow tail lambari; Gut morphology; Microbiota; Experimental challenge.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601645

Hematimetria manual e automática em jaguatiricas (Leopardus pardalis - Linnaeus, 1758)
Provedor de dados: 45
Autores: Silva,T.D.P.; Lacerda,L.A.; Carvalho,L.S.; Souza,S.N.; Arnhold,E.; Sant’Ana,F.J.F.; Fioravanti,M.C.S.
RESUMO Aparelhos de automação, cujo uso está estabelecido na hematologia dos animais domésticos, ainda não são empregados rotineiramente em felídeos selvagens. Esse estudo objetivou avaliar a técnica automatizada na contagem de células sanguíneas de jaguatiricas (Leopardus pardalis), comparando-a com a técnica manual. Foram coletadas amostras sanguíneas de oito jaguatiricas, que se submeteram à contagem de eritrócitos, leucócitos, plaquetas e à determinação do volume globular pelo método manual padrão e por meio do aparelho BC - 2800 VET® com a configuração para gatos domésticos. Os resultados foram avaliados por meio do teste t para dados pareados, e as técnicas submetidas à análise de correlação de Pearson. A técnica automatizada demonstrou resultados...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eritrócitos; Hematologia; Felidae; Leucócitos; Hematócrito.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501191

Glicerina bruta associada à ureia na terminação de bovinos: consumo, desempenho e características da carne
Provedor de dados: 45
Autores: D'Aurea,A.P.; Ezequiel,J.M.B.; D'Aurea,E.M.O.; Santos,V.C.; Fávaro,V.R.; Homem Júnior,A.C.; Almeida,M.T.C.; Perez,H.L.
RESUMO Objetivou-se nesta pesquisa avaliar os efeitos da combinação de glicerina bruta e ureia sobre o consumo, o desempenho produtivo e as características da carne de bovinos da raça Nelore. O estudo foi conduzido no confinamento do Setor de Digestibilidade, pertencente à Faculdade de Ciências Agrárias e Veterinárias-FCAV/Unesp, Câmpus de Jaboticabal. Para tal, 28 novilhas, da raça Nelore (n=28, com aproximadamente 20 meses de idade, 278±5,6kg), foram aleatoriamente distribuídas em quatro tratamentos utilizando-se de delineamento inteiramente ao acaso. Quatro dietas com energia metabolizável e proteína bruta semelhantes foram formuladas utilizando-se a proporção volumoso:concentrado de 30:70. O volumoso empregado foi silagem de milho, e os concentrados...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Glicerol; NNP; Qualidade da carne.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100165

Physical and electrocardiographic evaluation of horses used for wagon traction
Provedor de dados: 45
Autores: Bomfim,M.M.; Sattin,W.R.; Carvalho,S.F.; Gobesso,A.A.O.; Dória,R.S.G.; Leite-Dellova,D.C.A.
ABSTRACT The objective of this research was to evaluate the electrocardiogram (ECG) of horses used for wagon traction and to compare the results with the parameters obtained from inactive horses or horses submitted to a training routine. Fifty-six 3-15-year-old healthy horses (22 females and 34 males) were divided into three groups: control (without a work routine; N=21), wagon traction (N=25) and athlete (N=10) and submitted to physical examination and ECG (at rest). The rhythm, heart rate (HR), amplitude and duration of ECG waveforms and intervals were obtained from the frontal plane and base-apex leads. Heart score (HS) was calculated using the arithmetic mean of QRS duration in LI, LII and LIII. Measurements of ECG waves were smaller in control group,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ECG; Equine; Cart horses; Cardiovascular system; Heart score.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200371

Padrões de deslocamento de bezerras de corte recebendo suplemento em pastagem de azevém
Provedor de dados: 45
Autores: Moterle,P.H.; Rocha,M. G.; Pötter,L.; Sichonany,M.J.O.; Amaral Neto,L.G.A.; Silva,M.F.; Salvador,P.R.; Vicente,J.M.
RESUMO O objetivo deste trabalho foi avaliar o tempo de permanência, o número de bocados nas estações e o deslocamento entre estações alimentares por bezerras de corte em pastagem de azevém (Lolium multiflorum Lam.) e recebendo farelo de arroz integral como suplemento em três níveis (0,0; 0,5 e 1,0% PC). O método de pastejo foi rotacionado, com número variável de animais. O período de descanso foi estabelecido pela soma térmica (ST) de 187,5ºC, equivalente à ST necessária para a emissão de 1,5 folhas de azevém. O delineamento experimental foi inteiramente ao acaso, com medidas repetidas no tempo, três níveis de suplemento e seis ciclos de pastejo. O tempo de permanência em cada estação alimentar (9,4s) foi semelhante para bezerras exclusivamente a pasto e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bocados por estação alimentar; Farelo de arroz; Número de passos entre estações alimentares; Pastejo rotacionado; Tempo por estação alimentar.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000401021

Clinical and radiographic changes of carpi, tarsi and interphalangeal joints of beef zebu bulls on semen collection regimen
Provedor de dados: 45
Autores: Motta,G.A.; Girardi,A.M.; Sabes,A.F.; Portugal,E.S.; Nociti,R.P.; Bueno,G.M.; Marques,L.C.
ABSTRACT Osteoarthritis and osteochondrosis are highly correlated to reproductive failure in bulls. This study aimed to evaluate the carpal, tarsal and interphalangeal lesions in beef zebu bulls on semen collection regimen. Twenty-one beef cattle bulls, in a total of forty-one animals, were split into three age-based groups: animals from two to four years old (GI), from more than four to eight years old (GII) and above eight years old (GIII). The clinical findings were conformational changes of limbs, synovial effusion, peripheral venous engorgement of joints and prolonged decubitus. The total population showed moderate clinical manifestation and radiographic score. The GIII presented more severe joint lesions. Carpi and tarsi regions had discrete to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Infertility; Male; Overweight; Radiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601357

Assessment of electrochemotherapy effects on the development of Ehrlich solid tumor in swiss mice using a novel electroporator device
Provedor de dados: 45
Autores: Cunha,R.M.C.; Lavalle,G.E.; Reis,D.C.; Horta,R.S.; Teixeira,S.V.; Ramirez,J.A.; Araújo,R.B.
ABSTRACT Electrochemotherapy is a local anticancer treatment in which non-permeant chemotherapeutic drugs are associated with electric pulses of well-established parameters. The electric pulses cause pores to open on the plasma membrane and facilitate drug transport, enhancing cytotoxicity and reducing side effects. Assessment of electrochemotherapy effects on Ehrlich solid tumor development in this work aims to evaluate in vivo usage of the electroporator device developed by the Department of Electrical Engineering of Engineering School of UFMG. Therefore, 40 Swiss mice were inoculated with Ehrlich tumor cells, and developed the tumor in solid form. After 21 days, mice were subjected to specific treatment protocols (control, bleomycin, electric pulses and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mouse; Oncology; Electrochemotherapy; Experimental tumor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601581

Parâmetros citológicos e bioquímicos do líquido cefalorraquidiano coletado de bovinos sadios em dois momentos, com intervalo de 96 horas
Provedor de dados: 45
Autores: Cunha,P.H.J.; Andrade,D.G.A.; Oliveira-Filho,J.P.; Badial,P.R.; Passarelli,D.; Takahira,R.K.; Lisboa,J.A.N.; Borges,A.S.
RESUMO A análise do líquido cefalorraquidiano (LCR) é uma importante ferramenta no diagnóstico das doenças neurológicas dos bovinos. A coleta do LCR em diferentes momentos facilita o monitoramento do quadro clínico e/ou a avaliação da eficácia de tratamentos estabelecidos. Todavia, os efeitos de coletas consecutivas sobre os parâmetros citológicos e bioquímicos do LCR de bovinos saudáveis ainda não foram analisados. Dessa forma, o objetivo do presente estudo foi avaliar potenciais diferenças citológicas e bioquímicas no LCR de bovinos sadios, obtidos em dois momentos, com intervalo de 96 horas. O LCR foi submetido à análise citológica e à determinação do teor de proteína total. Na segunda coleta, verificou-se aumento significativo da celularidade, porém...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos; Líquido cefalorraquidiano; Inflamação.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601393

População de protozoários ruminais em novilhos zebuínos alimentados com ou sem volumoso
Provedor de dados: 45
Autores: Nigri,A.C.A.; Ribeiro,I.C.O.; Vieira,E.A.; Silva,M.L.F.; Virgínio-Júnior,G.F; Abrão,F.O.; Geraseev,L.C.; Duarte,E.R.
ABSTRACT This study aimed to quantify and identify the profile of the rumen protozoa population of beef steers fed with or without roughage. Nellore crossbred steers raised in extensive system on lignified tropical pastures with mineral supplementation and steers confined for 60 days only receiving pelletized concentrate and whole corn kernels were evaluated. After slaughter, rumen fluid was collected and one ml aliquots were diluted in nine ml formaldehyde solution at 10%. The counts of small, medium and large protozoa were held in Sedgewick Rafter chambers and identification of genus was possible after staining lugol and optical microscope with a 40X objective. The concentration of rumen protozoa positively correlated with pH ruminal. Cattle fed without...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Ciliados; Microbiota ruminal; Pecuária de corte; Acidose ruminal; Terminação.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501339

Dermatite piogranulomatosa ulcerativa em bovino por Corynebacterium pseudotuberculosis
Provedor de dados: 45
Autores: Soares,G.S.L.; Silva,L.C.A.; Batista,J.A.; Maia,L.A.; Simões,S.V.D.; Miranda Neto,E.G.
RESUMO Relata-se um caso de lesão cutânea secundária à infecção por Corynebacterium pseudotuberculosis em bovino. Abscessos e múltiplas lesões cutâneas nodulares, variando de 8x10 para 20x25cm de diâmetro, firmes, sensíveis ao toque e sem mobilidade, algumas com superfície ulcerada, circundada por halo avermelhado e drenando secreção piossanguinolenta, e outras com superfícies alopécicas, foram identificados na região torácica lateral do animal. Exames histopatológicos e o isolamento do agente de fragmentos obtidos após remoção cirúrgica das lesões confirmaram tratar-se da forma cutânea da infecção pelo C. pseudotuberculosis. As lesões microscópicas caracterizaram-se por dermatite nodular piogranulomatosa e ulcerativa. A avaliação da susceptibilidade in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatopatias; Ruminantes; Lesões piogranulomatosas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400860

Image-based red blood cell counter for multiple species of wild and domestic animals
Provedor de dados: 45
Autores: Mauricio,C.R.M.; Schneider,F.K.; Takahira,R.K.; Santos,L.C.; Gamba,H.R.
ABSTRACT RBC count plays an important role in animal diagnosis. Despite the many technologies available in different automated hematology analyzers, when it comes to the blood of wild animals it is still difficult to find an easy and affordable solution for multiple species. This study aims to evaluate the proposed automatic red blood cell counter. Blood samples (1 ocelot - Leopardus pardalis, 1 monkey - Cebus apella, 1 coati - Nasua nasua, 62 dogs - Canis familiaris, and 5 horses - Equus caballus) were analyzed using three methods: 1-manual count, 2-automatic count by image, and 3-semi-automatic count by image; blood from dogs and horses were also analyzed by a fourth method: 4-automatic count by impedance. The counts in methods 2 and 3 were produced by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Automatic Image-based RBC counting; Cebus apella; Leopardus pardalis; Nasua nasua; Wild Animals.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100075

Extrusão de disco intervertebral caudal (coccígea) em um Basset Hound: primeiro relato de caso
Provedor de dados: 45
Autores: Polidoro,D.; Corrêa,L.F.D.; Santos,R.P.; Aiello,G.; Chaves,R.O.; Baumhardt,R.; Ripplinger,A.; Mazzanti,A.
RESUMO Relata-se o primeiro caso no Brasil de doença do disco intervertebral (Hansen tipo I) entre as vértebras caudais (coccígeas) em uma cadela Basset Hound com seis anos de idade, castrada, pesando 16kg e com histórico de dor durante defecação e manipulação da região pélvica associada à inabilidade de mover, elevar ou abanar a cauda. Na radiografia simples, observou-se opacidade do forame intervertebral entre a quarta e a quinta vértebra caudal. O animal foi submetido à laminectomia dorsal modificada, seguida de fenestração do disco intervertebral afetado. Decorridos 15 dias da cirurgia, a paciente não demonstrava sinais de dor ao defecar e realizava movimentos de abano de cauda, mas ainda com desconforto na palpação e sem elevação da cauda acima da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Hansen tipo I; Cauda; Laminectomia; Cirurgia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601485

Fontes de contaminação de Yersinia enterocolitica durante a produção de leite
Provedor de dados: 45
Autores: Tavares,A.B.; Souza,A.I.A.; Dulac,C.F.; Moreira,L.M.; Dominguez,L.; Gonzalez,H.L.; Cereser,N.D.; Timm,C.D.
RESUMO Objetivou-se determinar as possíveis fontes de contaminação de Yersinia enterocolitica em diferentes pontos do processo de ordenha de vacas leiteiras em oito propriedades da região de Pelotas, RS, ao longo de um ano. Foram analisadas amostras de leite cru de conjunto logo após a ordenha, água de estábulo leiteiro, mão de ordenhador, balde de recolhimento do leite e insuflador de teteiras. As amostras de leite cru e água foram coletadas em frascos estéreis, e as amostras de mão, balde e teteiras com zaragatoas estéreis. As amostras de leite cru foram submetidas a um pré-enriquecimento em água peptonada, sendo posteriormente incubadas em caldo PSTA, adicionado de ampicilina. As amostras de água foram filtradas em membrana de éster de celulose e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ordenha; Leite; Água; Mão; Gastroenterite.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200483

Resposta imunológica a antígenos de Hysterothylacium deardorffoverstreetorum de peixes teleósteos
Provedor de dados: 45
Autores: Ribeiro,J.; Knoff,M.; Felizardo,N.N.; Vericimo,M.A.; Clemente,S.C. São.
RESUMO Anisaquidose é uma doença provocada por parasitos da família Anisakidae e se caracteriza por manifestações gastrointestinais e alérgicas. O Anisakis simplex é o parasito mais patogênico ao homem e altamente alergênico. Porém, outros anisaquídeos também são danosos aos humanos, mas é desconhecida a imunogenicidade dessas larvas. O objetivo deste trabalho foi avaliar o potencial imunogênico do parasito Hysterothylacium deardorffoverestreetorum (HD) em modelo murino. Camundongos da linhagem BALB/c foram divididos em três grupos experimentais e receberam as preparações antigênicas obtidas de larvas de HD: extrato bruto de larvas (EBH), extrato secretado/ excretado de larvas (ESH) e extrato bruto de larvas após excreção/secreção (EEH). Amostras séricas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anisaquidose; Hysterothylacium; Infecção experimental; Modelo murino.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200422

Melanose multicêntrica em frango de corte: relato de caso
Provedor de dados: 45
Autores: Tamiasso,N.V.; Pandolfi,K.T.; Pedrozo,E.A.; Simões,C.U.; Nunes,L.C.; Boeloni,J.N.
RESUMO Melanoblastos podem migrar de forma errática durante a embriogênese, gerando um quadro conhecido como melanose. São raros os estudos envolvendo melanose com acometimento múltiplo dos órgãos. Objetivou-se descrever um caso de melanose multicêntrica em frango de corte que gerou condenação do animal ao abate. Foram encaminhadas ao Laboratório de Patologia Animal da Universidade Federal do Espírito Santo para avaliação histopatológica amostras de diversos órgãos de uma ave de corte da linhagem Cobb de 48-49 dias de idade. Esse animal foi condenado na linha de inspeção por apresentar áreas multifocais enegrecidas. Ao exame microscópico, observou-se melanina multifocal variando de moderada a intensa quantidade em todos os órgãos acometidos com lesões...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ave; Melanização; Hiperpigmentação; Melanina.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200409

Identification of SNP c.-22G&amp;gt;A in the melanophilin gene from a dog with color dilution alopecia: case report
Provedor de dados: 45
Autores: Santos,L.M.; Messas,N.B.; Palumbo,M.I.P.; Miyasato,L.A.; Leal,P.V.; Martins,T.B.; Ramos,C.A.N.
ABSTRACT Mutant color alopecia is an ectodermical defection of color dilution, characterized by partial alopecia, dry, shine-less hair, and peeling and papule. Melanization damages also occur on the cortical structure of the affected hair. The animals affected have big melanin grains with irregular shape on the basal keratinocytes, also on the hair matrix cells and rod. Therefore, there is not a specific treatment that makes any difference on the syndrome evolution. Although in some animals, it is possible to use weekly showers with benzyl peroxide to reduce seborrhea formation and secondary infections. There is evidence that the condition in dogs is caused by a single nucleotide polymorphism in the gene encoding the melanophilin protein. In the present...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genotyping; Dermatology; Skin diseases; Mendelian inheritance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601503

Cartogenina associada à microperfuração do osso subcondral na reparação da cartilagem articular em equinos
Provedor de dados: 45
Autores: Rocha Junior,S.S.; Ribeiro,D.S.F.; Lima,M.P.A.; Valadares,R.C.; Pimenta,E.; Magalhães,J.F.; Camillo,J.C.; Spadeto Júnior,O.; Faleiros,R.R.
RESUMO A reconstituição da cartilagem articular danificada por doenças de desenvolvimento, trauma e osteoartrite tem sido um grande desafio na veterinária. O objetivo do presente estudo foi avaliar o uso da cartogenina, uma molécula capaz de induzir diferenciação de células mesenquimais em condrócitos, associado ou não à técnica de microfratura na reparação de defeitos condrais induzidos na tróclea femoral de equinos. Foram utilizados seis equinos pesando em média (±DP) 342±1,58kg, com idade de 7,2±1,30 anos e escore corporal de 7,1±0,75, os quais foram submetidos à videoartroscopia para indução da lesão condral de 1cm2 na tróclea lateral do fêmur e à realização da técnica de microperfuração do osso subcondral de ambos os joelhos. Foram realizadas quatro...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cavalo; Cartilagem hialina; Osteoartrite; Ultrassonografia; Radiografia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501251

Massa de forragem, composição morfológica e valor nutritivo de capim-braquiária submetido a níveis de sombreamento e fertilização
Provedor de dados: 45
Autores: Lopes,C.M.; Paciullo,D.S.C.; Araújo,S.A.C.; Gomide,C.A.M.; Morenz,M.J.F.; Villela,S.D.J.
RESUMO Características produtivas e nutricionais de Brachiaria decumbens, submetida a condições de sombreamento (sol pleno, 20% e 70% de sombreamento), sem e com uso de fertilização (80 kg.ha-1 de N e K2O e 60 kg.ha-1 de P2O5), foram avaliadas no delineamento de blocos casualizados, com quatro repetições. As parcelas sombreadas foram alocadas em um sistema silvipastoril, enquanto aquelas a pleno sol foram avaliadas em um monocultivo de B. decumbens. O sombreamento severo promoveu reduções de 54% na massa seca verde, 59% na massa seca total e 58% na densidade volumétrica de forragem. Aumentos da massa de forragem e da densidade volumétrica em resposta ao fertilizante foram observados somente nas condições de sol pleno e sombreamento moderado. A adubação não...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adubação de pastagens; Brachiaria decumbens; Digestibilidade; Proteína bruta; Sistema silvipastoril.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100225

Evaluation of intranasal oxygen supplementation in mules anesthetized with the combination of ketamine, butorphanol, and guaifenesin
Provedor de dados: 45
Autores: Módolo,T.J.C.; Munerato,M.S.; Bueno,G.M.; Pereira,G.T.; Marques,J.A.
ABSTRACT Hypoxemia is a major complication of field anesthesia and no studies regarding this occurrence in mules has been done. Thus, the aim of this study was to evaluate intranasal oxygen supplementation (IOS) in mules (Equus caballus x Equus asinus) anesthetized with ketamine/butorphanol/guaifenesin combination. For this, we used six male, adult mules (322±29kg) which underwent premedication (MPA) with 0.2mg/kg of midazolam intramuscularly after 15 minutes, 0.02mg/kg detomidine IV 5 minutes after, induction IV with combination of ketamine (2mg/mL), butorphanol (22.5mg/mL), and guaifenesin (50mg/mL) (K/B/G) until lateral decumbency. Maintenance was done with the same anesthetic combination. The animals were submitted twice to the protocol described...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypoxemia; IOS; Field anesthesia; Total intravenously anesthesia; Detomidine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100130

Imunidade celular em vacas Holandesas soropositivas para o Vírus da Leucose Bovina (BLV) durante o período de transição
Provedor de dados: 45
Autores: Gomes,V.; Baldacim,V.A.P.; Costa,J.F.R.; Silva,C.P. Costa e; Arcaro,J.R.P.; Miranda,M.S.; Sousa,R.S.; Fagliari,J.J.; Madureira,K.M.
RESUMO Esta pesquisa avaliou a dinâmica dos leucócitos e das subpopulações de linfócitos em vacas Holandesas soropositivas para o BLV no período de transição. Amostras de sangue (n=72) provenientes de 12 vacas foram coletadas entre as semanas -2 e +3 para a realização do leucograma, imunofenotipagem, dosagem de cortisol e haptoglobina (Hp). O perfil leucocitário foi caracterizado por leucocitose, neutrofilia, monocitose e eosinopenia próximo ao parto. Linfocitose e elevada proporção de linfócitos B CD21+ foram achados constantes entre as semanas -2 e +3; assim, as vacas foram testadas e confirmadas soropositivas para o BLV. Os valores das subpopulações de linfócitos T apresentaram-se baixos durante o período de transição, observando-se dois picos máximos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Periparto; Haptoglobina; Cortisol; Subpopulações de linfócitos.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601367

Serum concentrations of acute phase proteins in goats and ewes with naturally acquired Staphylococcus aureus mastitis
Provedor de dados: 45
Autores: Simplício,K.M.M.G.; Rocha,T.G.; Sanchez,D.C.C.; Cotrim,F.S.; Silva,P.C.; Fagliari,J.J.
ABSTRACT Serum protein concentrations, including acute phase proteins (APPs), of goats and ewes with naturally acquired Sthaphylococcus aureus mastitis were determined by means of SDS-PAGE electrophoresis to evaluate the relevance of these APPs as biomarkers of the disease in these species. Fifteen healthy goats and 5 goats with naturally acquired staphylococci mastitis, as well as fifteen healthy ewes and 5 ewes with staphylococci mastitis were submitted to daily blood sampling during 7 days. In goats, an increase of 570%, 125%, 621%, and 279% in serum concentrations of ceruloplasmin, fibrinogen, haptoglobin and α1-acid glycoprotein, respectively, was observed. In sheep the increase in serum concentrations of ceruloplasmin, fibrinogen, haptoglobin and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ceruloplasmin; Fibrinogen; Haptoglobin; Α1-acid glycoprotein.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200285

Comparação entre vacas puras Holandês e mestiças Holandês x Jersey quanto à sanidade, imunidade e facilidade de parto
Provedor de dados: 45
Autores: Pizzol,J.G. Dal; Gomes,I.P.O.; Braun,W.; Lisboa,J.A.N.; Flaiban,K.K.M.C.; Thaler Neto,A.
RESUMO O cruzamento com a raça Jersey vem sendo utilizado principalmente como alternativa para o aumento da concentração de sólidos do leite em rebanhos puros Holandês, sendo a capacidade de produção desses animais conhecida em diversos estudos. Entretanto, ainda existem limitadas informações sobre diversos fatores relevantes para a tomada de decisão e para o manejo de rebanhos cruzados, tais como resistência a doenças e facilidade de parto, sendo esta a motivação do presente trabalho, o qual objetivou avaliar a sanidade, a imunidade e a facilidade de parto de vacas mestiças Holandês x Jersey em relação a vacas puras Holandês. Foram analisados dados de dificuldade de parto, duração da gestação, retenção de placenta, indicadores sanguíneos para doenças...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cetose; Cruzamento; Imunoglobulinas; Paresia puerperal hipocalcêmica; Retenção de placenta.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400955

Resposta hematológica de cavalos de enduro, que correram diferentes distâncias, no período pós-prova
Provedor de dados: 45
Autores: Siqueira,R.F.; Fernandes,W.R.
RESUMO O objetivo deste trabalho foi estudar as alterações hematológicas após provas de enduro de diferentes distâncias até 14 dias após a prova, período de recuperação metabólica e musculoesquelética, as quais ocorrem em cavalos treinados e que concluíram as competições em boas condições de saúde. Foram avaliados 32 cavalos Árabes, com 400 (±32kg), treinados para provas de enduro, que competiram em quatro provas nas categorias velocidade livre de 80km (n=13), 120km (n=14) e 160km (n=5). Amostras de sangue foram coletadas antes da largada (M0), imediatamente após a saída da última inspeção veterinária (M1) e três horas após (M2). Já nos respectivos haras, foram coletadas amostras aos três (M3), sete (M4) e 14 (M5) dias após a prova. Houve aumento dos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cavalos de enduro; Hemograma; Pós-prova; Recuperação.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300543

Torção de cólon em um felino doméstico: relato de caso
Provedor de dados: 45
Autores: Souza,L.P.; Bach,E.C.; Lunardeli,B.; Porto,C.; Muller,T.R.; Salbego,F.; Luciani,M.G.; Souza,D.S.
RESUMO A torção de cólon em felinos é uma patologia rara. Os principais sinais apresentados são de abdome agudo e podem levar o animal rapidamente a óbito. O presente trabalho tem o objetivo de relatar um caso de torção de cólon em um felino. Este é o primeiro relato dessa enfermidade no Brasil. O diagnóstico foi realizado por meio do histórico e de exames de imagem. O animal foi encaminhado para a cirurgia, mas, devido à gravidade e extensão das lesões intestinais, foi realizada a eutanásia.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Felino; Cólon; Torção; Radiografia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300597

Estenose esofágica em duas cadelas após ovário-histerectomia: relato de caso
Provedor de dados: 45
Autores: Luciani,M.G.; Biezus,G.; Cardoso,H.M.; Müller,T.R.; Ferian,P.E.; Souza,L.P.; Souza,D.S.; Casagrande,R.A.
RESUMO A estenose esofágica benigna é uma afecção rara em pequenos animais, comumente secundária a esofagites ulcerativas. O refluxo gastroesofágico, frequente durante procedimentos anestésicos, é a principal causa de esofagite grave, com consequente formação de cicatriz esofágica. O presente trabalho tem por objetivo descrever dois casos de estenose esofágica ocorrentes após ovário-histerectomia, com destaque para os procedimentos diagnósticos realizados. Em ambos os casos, a combinação dos sinais clínicos sugestivos e os achados de esofagograma e esofagoscopia foram determinantes. No primeiro caso, devido ao tempo avançado de desenvolvimento dos sinais clínicos, o paciente veio a óbito antes mesmo que a intervenção direta da região de estenose fosse...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canino; Esofagite; Cicatriz esofágica; Estenose esofágica; Refluxo gastroesofágico.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400908

Combinação de butafosfan e cianocobalamina no metabolismo da glicose em vacas leiteiras após o parto
Provedor de dados: 45
Autores: Tabeleão,V.C.; Schwegler,E.; Pereira,R.A.; Krause,A.R.T.; Montagner,P.; Feijó,J.O.; Schneider,A.; Schmitt,E.; Brauner,C.C.; Rabassa,V.R.; Pino,F.A.B. Del; Corrêa,M.N.
RESUMO A hipótese deste estudo é de que o uso da combinação de butafosfan e cianocobalamina pode melhorar a resistência periférica à insulina, aumentar a quantidade de glicose disponível para a glândula mamária e a produção de leite. Assim, o objetivo foi investigar os efeitos combinados de butafosfan e cianocobalamina sobre o metabolismo da glicose em vacas leiteiras no período pós-parto. Vinte e uma vacas leiteiras foram divididas em dois grupos: grupo controle (CON, n= 11), que recebeu cinco aplicações de solução salina (20mL / animal 0,9% NaCl), e grupo Catosal(r) (ABC, n= 10), que recebeu cinco aplicações de 20mL de uma solução contendo as substâncias butafosfan e cianocobalamina (B12 Catosal(r), 100mg da substância butafosfan e 50µg de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolismo energético; Fósforo orgânico; Resistência à insulina; Vacas leiteiras.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200317

Physical characteristics and fertility of fractionated donkey semen cooled at 5°C
Provedor de dados: 45
Autores: Carvalho,L.E.; Silva Filho,J.M.; Palhares,M.S.; Sales,A.L.R.; Gonczarowska,A.T.; Oliveira,H.N.; Resende,M.C.; Neves,M.G.; Madison,R.J.
ABSTRACT The aim of this study was to evaluate the effect of two different extenders (Skimmed Milk Glucose - SMG or Lactose - Egg Yolk - LEY) on physical characteristics and fertility of fractionated donkey semen cooled at 5°C. For this, four Pêga donkeys were used as semen donors. The sperm rich fraction of the ejaculate was diluted preparing insemination doses containing 400 x 106 motile spermatozoa in a volume of 22 mL, cooled to 5°C and stored up to 48 hours in a container proposed by Palhares (1997). Sperm motility and vigor were assessed in fresh semen, after first semen dilution, before insemination, at 24 and 48 hours after storage. For the fertility evaluation, 44 mares were inseminated with semen stored for a period between 12 and 24 hours. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Donkey; Fractionated collection; Cooled semen; Fertility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100029

Análise da viabilidade econômico-financeira de sistemas de cria em gado de corte: estudo de múltiplos casos
Provedor de dados: 45
Autores: Garcia,F.Z.; Carvalho,C.A.B.; Peres,A.A.C.; Malafaia,P.; Souza,P.M.
RESUMO Muitas fazendas, situadas em bacias leiteiras, estão migrando da atividade leiteira para a pecuária de corte e tal migração vem sendo feita de forma muitas vezes não criteriosa ou sem assistência técnica. Neste estudo, objetivou-se avaliar a viabilidade econômico-financeira e o risco econômico de diferentes sistemas de cria de gado de corte, explorados em regiões de bacia leiteira. O trabalho consistiu em um estudo de múltiplos casos que tiveram como critério de escolha três sistemas que desenvolvessem atividade de cria. O horizonte de informações econômicas dos sistemas foi de 36 meses e os sistemas de criação foram caracterizados por meio de levantamento de dados realizados em visitas periódicas, utilizando-se questionários previamente elaborados....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avaliação econômica; Bezerros; Gado de corte.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000401030

Hidrolisado proteico de resíduo de sardinha como atrativo alimentar para juvenis de jundiá
Provedor de dados: 45
Autores: Broggi,J.A.; Wosniak,B.; Uczay,J.; Pessatti,M.L.; Fabregat,T.E.H.P.
RESUMO O objetivo deste estudo foi avaliar a utilização do hidrolisado proteico de resíduo de sardinha como atrativo na alimentação do Rhamdia quelen. No experimento 1, foram utilizados os seguintes atrativos alimentares: 1. extrato aquoso de músculo de tilápia-do-Nilo (controle positivo); 2. hidrolisado proteico de resíduo de sardinha com baixo grau de hidrólise (GH); 3. hidrolisado proteico de resíduo de sardinha com alto GH; 4. hidrolisado proteico de resíduo de sardinha com alto GH diluído (10% da concentração) e 5. controle usando somente água destilada. Após jejum de 48 horas, o comportamento foi registrado em vídeo por um período basal de dois minutos e por mais 18 minutos após a inoculação do atrativo. O delineamento foi inteiramente ao acaso, com...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peixe nativo; Etologia; Hidrólise; Manejo alimentar.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200505

Uso do fluralaner no tratamento da demodicidose canina juvenil generalizada: relato de caso
Provedor de dados: 45
Autores: Bezerra,J.A.B.; Cardoso,I.R.S.; Rodrigues,R.T.G.A.; Filgueira,K.D.
RESUMO O objetivo do presente trabalho foi relatar a eficácia do fluralaner no tratamento da demodicidose juvenil generalizada canina. Dois caninos, apresentando dois e três meses de idade, com diagnóstico clínico e parasitológico de demodicidose generalizada, foram tratados com administração única de fluralaner, na dose recomendada em bula pelo fabricante. Além disso, foi realizada a terapia adjuvante à base de xampu de peróxido de benzoíla e domperidona. Observou-se uma resposta terapêutica satisfatória, com repilação completa ao 30º dia após a administração do fármaco. Para cada paciente, foi realizado exame parasitológico do raspado cutâneo aos 75 e 90 dias seguintes ao início do tratamento, e todos foram negativos. Tendo em vista a elevada eficácia do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isoxazolina; Demodex canis; Dermatologia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601491

Parâmetros clínicos, hematológicos e bioquímicos de novilhas com hipocalcemia subclínica pré-parto suplementadas com dieta aniônica
Provedor de dados: 45
Autores: Pizoni,C.; Feijó,J.O.; Londero,U.S.; Pereira,R.A.; Corrêa,M.N.; Brauner,C.C.; Xavier,E.G.; Pino,F.A.B.D.; Rabassa,V.R.
RESUMO A hipótese do presente estudo consiste em que uma dieta aniônica prolongada acarretaria uma mobilização mais rápida do cálcio sanguíneo. O objetivo proposto foi avaliar parâmetros clínicos, hematológicos e bioquímicos de novilhas, com hipocalcemia subclínica, submetidas a diferentes períodos de fornecimento de dieta aniônica no pré-parto. Foram utilizadas nove novilhas da raça Holandês induzidas à hipocalcemia subclínica no pré-parto, divididas em três grupos: G0 = sem dieta aniônica antes da indução; G11 = 11 dias de dieta aniônica pré-indução; e G15 = 15 dias de dieta aniônica pré-indução. Foi realizado exame clínico antes e depois da indução, e avaliaram-se cálcio total e ionizado, magnésio e albumina nos dias -2, 0, 1, 2 e 3 (dia 0 = momento da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dieta pré-parto; Cálcio; Nulíparas; Células de defesa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501130

Eliminação de Dioctophyme renale pela urina em canino com dioctofimatose em rim esquerdo e cavidade abdominal - Primeiro relato no Rio Grande do Sul
Provedor de dados: 45
Autores: Perera,S.C.; Rappeti,J.C.S.; Milech,V.; Braga,F.A.; Cavalcanti,G.A.O.; Nakasu,C.C.; Durante,L.; Vives,P.; Cleff,M.B.
RESUMO Dioctophyme renale é um parasito que afeta tanto animais como humanos e tem como órgão de eleição o rim direito. Relata-se o caso clínico-cirúrgico de um paciente canino com histórico de eliminação de três exemplares de D. renale pela urina e presença de parasitos no rim esquerdo e na cavidade abdominal. No Hospital de Clínicas Veterinárias da Universidade Federal de Pelotas, foram realizados exames pré-cirúrgicos, entre eles a ultrassonografia abdominal, que identificou a localização dos nematódeos, e o exame de Doppler pulsado dos vasos intrarrenais, que demonstrou aumento nos índices resistivos nas regiões avaliadas. O paciente foi conduzido para a realização de laparotomia exploratória, sendo removidos 23 parasitos da cavidade abdominal. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parasitos; Ultrassom abdominal; Doppler pulsado; Laparotomia exploratória.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300618

Inoculação de proteína isolada de soja em ovos embrionados oriundos de matrizes semipesadas com diferentes idades
Provedor de dados: 45
Autores: Damasceno,J.L.; Cruz,F.G.G.; Melo,R.D.; Feijó,J.C.; Rufino,J.P.F.; Valentim,F.M.; Oliveira,J.P.C.
RESUMO Este estudo objetivou avaliar os efeitos da inoculação de proteína isolada de soja (P.I.S.) em ovos embrionados de matrizes semipesadas com diferentes idades. Foram utilizados 320 ovos embrionados de matrizes semipesadas da linhagem Rhode Island Red com 35 e 70 semanas de idade. Ao 17º dia de incubação, os ovos foram inoculados com 0,5mL de solução diretamente na cavidade alantoide. O delineamento experimental utilizado foi o inteiramente ao acaso, em esquema fatorial (2 x 4), constituído por dois fatores: idades das matrizes (matrizes jovens e matrizes velhas) e soluções inoculadas (ovo íntegro; 0,5% de solução salina; 1% de P.I.S. + 0,5% de solução salina; e 2% de P.I.S. + 0,5% de solução salina), totalizando oito tratamentos contendo 40 ovos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho de pintos; Eclodibilidade; Mortalidade embrionária; Nutrição in ovo.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501259

Biogenic amines and mycotoxins concentrations in baled silage from organic and conventional farms
Provedor de dados: 45
Autores: Jovaišienė,J.; Bakutis,B.; Baliukonienė,V.; Matusevičius,P.; Lipiński,K.; Antoszkiewicz,Z.; Fijałkowska,M.
ABSTRACT The aim of the current study was to investigate biogenic amines and mycotoxins concentrations in baled silage (mainly Poaceae family grasses) prepared in organic and conventional farms and to relate these parameters to fermentative parameters. The mean dry matter (DM) content was 364.10±93.31 and 424.70±95.93g/kg in the silage from organic and conventional farms respectively. The silage samples from organic farms had 17.00% higher (P≤ 0.05) tyramine (TY) than the silage from conventional farms. Conventional farm samples were characterized by 46.00% higher histamine (HIS) (P≤ 0.05), 9.80% higher putrescine (PUT) (P≤ 0.05), 17.30% higher cadaverine (CAD) (P≤ 0.05). Aflatoxins (AFL) (total) and zearalenone (ZEN), T-2/HT-2 concentrations were higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogenic amines; Mycotoxins; Volatile fatty acids; Organic farm; Conventional farm.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200269

Qualidade da carne de ovinos terminados em confinamento com dietas com silagens de diferentes cultivares de sorgo
Provedor de dados: 45
Autores: Gois,G.C.; Santos,E.M.; Sousa,W.H.; Ramos,J.P.F.; Azevedo,P.S.; Oliveira,J.S.; Pereira,G.A.; Perazzo,A.F.
RESUMO Objetivou-se avaliar a influência de dietas contendo silagem de diferentes cultivares de sorgo sobre as características físicas e químicas na carne de ovinos sem padrão racial definido, com idade entre cinco e sete meses e peso vivo médio de 17,7±3,7kg, alimentados com dietas contendo silagem de diferentes cultivares de sorgo. O experimento foi conduzido na Estação Experimental Pendência, pertencente à Empresa Estadual de Pesquisa Agropecuária - Emepa, tendo um período experimental de 42 dias. Utilizou-se um delineamento inteiramente ao acaso, com cinco tratamentos (silagem de sorgo BRS 610, BRS 655, BRS 800, BRS 810 e Ponta Negra) e sete repetições. Ao atingirem o peso de abate de 26,24kg, os animais foram encaminhados ao abate. Procedeu-se à...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Força de cisalhamento; Cor; Gordura; Maciez; Proteína.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601653

Avaliação nutricional e energética da soja integral tostada para frangos de corte
Provedor de dados: 45
Autores: Dalólio,F.S.; Albino,L.F.T.; Rostagno,H.S.; Silva,D.L. da; Xavier Júnior,M.L.; Oliveira,V.D.
RESUMO Objetivou-se determinar a composição química, os valores energéticos e os coeficientes de digestibilidade ileal verdadeira de aminoácidos de sojas integrais tostadas de cinco regiões. No primeiro experimento, foram utilizados 288 pintos de corte machos da linhagem Cobb 500, com 13 dias de idade e peso médio de 420,0±5,0g. O delineamento experimental utilizado foi inteiramente ao acaso, com seis tratamentos (cinco sojas integrais e uma ração referência) e oito repetições de seis aves. No segundo experimento, foram utilizados 288 frangos de corte machos da linhagem Cobb 500, com 24 dias de idade e peso médio de 865,0±20,0g. O delineamento experimental utilizado foi inteiramente ao acaso, com seis tratamentos (cinco sojas integrais e uma ração isenta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoácidos digestíveis; Coeficientes; Digestibilidade; Energia; Metabolizabilidade.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200437

Metionina+cistina digestível para juvenis de tambaqui
Provedor de dados: 45
Autores: Gonçalves Júnior,L.P.; Sousa,J.G.S.; Selvatici,P.D.C.; Mendes,L.F.; Vargas Júnior,J.G.; Mendonça,P.P.
RESUMO Avaliou-se o efeito dos níveis de metionina+cistina digestível para juvenis de tambaqui na fase inicial de desenvolvimento (3,03±0,06g) durante 45 dias. Foram utilizados 160 juvenis de tambaqui distribuídos em DIC, com cinco tratamentos (níveis de metionina+cistina digestível = 0,66; 0,73; 0,80; 0,87; 0,94%), quatro repetições e oito animais por unidade experimental. As dietas utilizadas foram isoproteicas (25%) e isoenergéticas (3200kcal.kg-1). Os resultados obtidos foram submetidos aos testes de homogeneidade, normalidade, à análise de variância e à análise de regressão. Os parâmetros físicos e químicos da água do sistema de recirculação ficaram dentro da faixa de tolerância para a espécie. Os níveis de metionina+cistina digestíveis avaliados não...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoácido; Caracídeos; Colossoma macropomum; Nutrição.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300711

Implementation of immobilization accessories for positioning of small animals for radiation therapy
Provedor de dados: 45
Autores: Vettorato,M.C.; Girotto,C.H.; Fogaça,J.L.; Vulcano,L.C.; Fernandes,M.A.R.
ABSTRACT Radiation therapy is a modality that is presenting great advances in veterinary medicine worldwide. In Brazil, this therapeutic option is underachieved. The success of this method depends on several factors, including the use of appropriate accessories for protection and immobilization of patients. For the immobilization of small animals during treatment, in addition to sedation and anesthesia, immobilizing accessories, similar to those used in human radiotherapy, are used. This study aimed to present proposals for immobilizing accessories adapted to the positioning of small animals in order to be used in radiotherapy planning. In order to achieve results, accessories were made and tested in a living animal simulating a radiotherapy planning,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Veterinary radiotherapy; Immobilizing accessories; Small animals.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601419

Exercise training of dogs with myxomatous valve disease
Provedor de dados: 45
Autores: Valandro,M.A.; Pascon,J.P.E.; Pereira,D.T.P.; Mistieri,M.L.A.
ABSTRACT The present study has the objective of evaluating the effects of exercise training, using moderate intensity walking (60 to 80% of maximum heart rate), from 30 to 50 minutes, three times a week, in alternate days, during eight weeks, on heart rate variability in dogs with myxomatous valve disease (MVD). For that, 20 dogs in stages B1 (1), B2 (14) and C2 (5) of MVD (ACVIM classification) were divided into untrained control group (CG, n=9) and training group (TG, n=11), and assessed at baseline (T0), after four (T1) and eight weeks (T2). Only one B1 and five B2 dogs completed the training program. In the time domain, the rMSSD was greater in TG in T1 (155,5+42,07) and T2 (199,8+83,54) than CG (T1:91,17+35,79 and T2:88,17+57,51). In the frequency...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Valvar endocardiosis; Therapy; Regular physical exercise; Autonomic balance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200325

Influência do posicionamento radiográfico no cálculo interobservador do ângulo do platô tibial em cães
Provedor de dados: 45
Autores: Capelasso,S.M.; Zanatta,R.; Lemos,R.S.; Santos,M.D.; Silva,F.M.; Freitas,S.H.; Amude,A.M.; Ferrigno,C.R.A.; Dower,N.M.B.; Yamauchi,K.C.I.
RESUMO O objetivo deste trabalho foi demonstrar que o posicionamento radiográfico inadequado do membro pélvico de cães (imagens obliquadas) afeta a mensuração do ângulo do platô tibial (APT), levando à maior variação entre observadores. Foram realizadas duas projeções radiográficas nos membros pélvicos direito e esquerdo, uma em perfil verdadeiro e a outra com o membro obliquado em 21 cães provenientes do atendimento clínico cirúrgico do Hospital Veterinário da Universidade de Cuiabá, em Cuiabá-MT. Os critérios de inclusão foram cães livres de histórico ou afecção ortopédica nos membros pélvicos, pesando entre 15 e 40 quilos, sem predileção por raça ou sexo, entre dois e sete anos de idade. Foram obtidas 42 imagens radiográficas em perfil verdadeiro e 42...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Membro pélvico; Ligamento cruzado cranial; Osteotomias; Posicionamento; Ruptura.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601456

Efeito da fluidoterapia transcirúrgica sobre o hematócrito pós-cirúrgico em cadelas submetidas a ovariossalpingo-histerectomia eletiva
Provedor de dados: 45
Autores: Druziani,J.T.; Fukushima,F.B.; Gomes,A.V.; Quinaglia,G.B.; Vizzu,J.F.; Cunha,O.; Sacchi,J.O.; Silva,M.M.
RESUMO Apesar dos inúmeros benefícios da fluidoterapia transcirúrgica, sobrecarga de volume pode trazer efeitos deletérios, como a alteração de parâmetros hematimétricos. Dessa maneira, o presente trabalho teve como objetivo avaliar duas diferentes taxas de infusão de solução cristaloide no período transanestésico e seus efeitos até 24 horas pós-operatório. Foram utilizados dois grupos de seis animais cada, um deles recebeu solução de cloreto de sódio 0,9% a 10mL/kg/h (G10) e o outro a 5mL/kg/h (G5). Os valores de hematócrito foram avaliados no período de 24 horas em 10 diferentes momentos. Os resultados não apontaram diferenças significativas entre os grupos, porém foi observada redução significativa do hematócrito após indução anestésica. Foi ainda...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fluido; Anestesia; Castração; Hematologia; Hemodiluição.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400921

Performance reprodutiva de leitoas submetidas à inseminação artificial pós-cervical
Provedor de dados: 45
Autores: Ternus,E.M.; Vanz,A.R.; Lesskiu,P.E.; Preis,G.M.; Serafini,L.; Consoni,W.; Traverso,S.D.; Cristani,J.
RESUMO O objetivo deste trabalho foi avaliar o desempenho reprodutivo de nulíparas submetidas à inseminação artificial pós-cervical (IAPC) comparada à inseminação artificial tradicional (IAT). Foram avaliados ocorrência de sangramento, ocorrência de refluxo, dificuldade no transpasse da cérvix e total de células refluídas até 30 minutos após inseminação. Fêmeas submetidas à IAPC (n=279) foram inseminadas com doses de 1,5 x 109 diluídas em 45mL, e fêmeas submetidas à IAT (n=273) inseminadas com doses de 2,5 x 109 em 80mL. O transpasse da cérvix foi possível em 91,04% (254/279) das leitoas. A dificuldade no transpasse foi de 41,58% (116/279), não comprometendo o desempenho reprodutivo (P&gt;0,05). Presença de sangramento não afetou a taxa de parto nem o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fêmeas nulíparas; Inseminação pós-cervical; Inseminação tradicional; Desempenho reprodutivo.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400777

Outcome of adjuvant chemotherapy with lomustine, vinblastine and chlorambucil on management of canine mast cell tumour of high to intermediate risk
Provedor de dados: 45
Autores: Horta,R.S.; Lavalle,G.E.; Costa,M.P.; Moura,L.L.; Marcinowska,A.; Araújo,R.B.
ABSTRACT In spite of the many available protocols, the use of chemotherapy for the management of canine mast cell tumours (MCT) remains empirical, and there is lack of criteria for the choice of protocol and definition of patients who may benefit from treatment. The objective of this study was to evaluate the outcome of dogs with MCT after adjuvant chemotherapy according to the risk of recurrence or metastasis proposed on the literature. This prospective study included 89 followed up dogs with prognosis assesment including clinical, histological, immunohistochemical and genetic features of canine MCT. Patients were grouped according to risk of recurrence and metastasis and recommended treatment with lomustine followed by chlorambucil if considered at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Neoplasm; Mast cells; Ki-67; C-kit.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601426

Níveis de suplementação de vitamina K para codornas de corte em crescimento de 15 a 35 dias de idade
Provedor de dados: 45
Autores: Stanquevis,C.E.; Marcato,S.M.; Furlan,A.C.; Perine,T.P.; Batista,E.; Grieser,D.O.; Zancanela,V.; Benites,M.I.
RESUMO O presente experimento foi realizado com o objetivo de determinar os níveis de suplementação de vitamina K para codornas de corte. O delineamento experimental foi inteiramente ao acaso, com oito tratamentos, cinco repetições e 38 codornas por unidade experimental. Os níveis de suplementação de vitamina K foram: 0; 0,7; 1,0; 1,3; 1,6; 1,9; 2,2; 2,5mg/kg de ração. Não houve influência dos níveis de suplementação de vitamina K sobre o consumo de ração, peso corporal, ganho de peso, biomassa corporal acumulada e conversão alimentar, como também não foram alterados o peso, a densidade óssea, a resistência óssea e a concentração de cinzas no fêmur e na tíbia, o comprimento e o índice de Seedor do fêmur e o diâmetro da tíbia. O diâmetro e a concentração de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix; Desempenho; Parâmetros ósseos; Requerimento nutricional.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000401006

Cisto ósseo aneurismático em tecido mole em um cão - relato de caso
Provedor de dados: 45
Autores: Barni,B.S.; Santos,E.R.; Rosa,N.S.; Lopes,D.J.; Hesse,K.L.; Pavarini,S.P.; Contesini,E.A.
RESUMO Este trabalho descreve o diagnóstico e o tratamento instituído para um cão com um raro cisto ósseo aneurismático originado em tecido mole. O paciente foi apresentado para atendimento no Hospital de Clínicas Veterinárias da Universidade Federal do Rio Grande do Sul devido à dificuldade de locomoção, fraqueza nos membros pélvicos e disquesia havia 15 dias. Já estava recebendo tratamento medicamentoso sem sucesso. Ao exame clínico, notou-se aumento de volume sólido na região perineal direita, e foram solicitados exames complementares de imagem. A radiografia da região sugeriu hérnia perineal direita ou neoplasia. O cão foi encaminhado para cirurgia, na qual foi removida uma estrutura tumoral, arredondada, de aspecto ossificado. O exame histopatológico...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canino; Tumor benigno; Períneo.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100106

Physicochemical characteristics of smoked cooked linguiças made with ostrich meat trimmings
Provedor de dados: 45
Autores: Nascimento,R.S.; Fonseca,A.B.; Feijó,M.B.S.; Franco,R.M.; Miranda,Z.B.
ABSTRACT The aim of this study was to evaluate the physicochemical characteristics of three formulations of smoked cooked linguiças, only differing in the lean meat used: (Formula 1 ― 100% ostrich meat; Formula 2 ― 50% ostrich meat + 50% pork; and Formula 3 ― 50% ostrich meat + 50% chicken), elaborated with ostrich meat trimmings. The formulas showed slightly higher moisture content (62.00-64.41%) than the maximum allowed in the legislation for cooked linguiças (60%) (Brasil, 2000). However, their protein content (19.99-22.14%) was at least 42% higher than the minimum required level (14%); the fat content (11.82-14.25%) was less than half the maximum permitted level (35%) in the same legislation, and at least 45% less than three well-known smoked cooked...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Struthio camelus; Moisture; Fat; Protein; Ash.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200491

Desempenho e características de carcaça de três genótipos comerciais de frangos de corte alimentados com diferentes dietas
Provedor de dados: 45
Autores: Silva,M.T.P.; Veloso,R.C.; Pires,A.V.; Torres Filho,R.A.; Pinheiro,S.R.F.; Winkelstroter,L.K.; Barros,F.J.M.; Senna,J.A.B.
RESUMO Este estudo teve como objetivo avaliar o desempenho e as características de carcaça de frangos de corte de três genótipos comerciais do nascimento aos 35 dias de idade. Utilizou-se um total de 2.970 pintos de três genótipos de aves comerciais (Cobb 500, Hubbard Flex e Ross 308). Os programas nutricionais foram dieta basal, dieta com 10% mais e 10% menos de aminoácidos do que a dieta basal. As aves foram distribuídas em delineamento inteiramente ao acaso, em esquema fatorial 3x3x2 (genótipo x dieta x sexo), com cinco repetições e 33 aves por unidade experimental. Conversão alimentar, ganho de peso diário, ingestão da dieta e peso corporal aos 35 dias de idade foram registrados. Duas aves de cada unidade experimental foram amostradas e abatidas aos 35...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cobb; Conversão alimentar; Hubbard; Rendimento de carcaça; Ross.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501311

Abiotrofia cerebelar em um gato: relato de caso
Provedor de dados: 45
Autores: Firmino,M.O.; Maia,L.Â.; Costa,C.C.F.S.; Oliveira,L.M.; Dantas,A.F.M.
RESUMO Um caso de abiotrofia cerebelar em um gato com 45 dias de idade foi diagnosticado no Laboratório de Patologia Animal, Hospital Veterinário da Universidade Federal de Campina Grande. O animal apresentava, havia 15 dias, apatia, anorexia, desidratação, ataxia, hipermetria, espasticidade dos membros torácicos e pélvicos, tremores de intenção, nistagmo, opistótono, déficit proprioceptivo e ausência de resposta de ameaça. Clinicamente, havia a suspeita de hipoplasia cerebelar, e, devido ao prognóstico desfavorável, o animal foi eutanasiado. Na necropsia, não foram observadas alterações macroscópicas. Microscopicamente, as lesões estavam restritas ao cerebelo e caracterizavam-se por alterações neurodegenerativas e necróticas, com desaparecimento segmentar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Doença hereditária; Disfunção cerebelar; Degeneração neuronal.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501181

Avaliação biomecânica e dimensional do fio de sutura à base de quitosana
Provedor de dados: 45
Autores: Alves,A.P.; Sá,M.J.C.; Fook,M.V.L.; Felipe,G.C.; Henrique,F.V.; Albuquerque,E.E.; Medeiros,L.K.G.; Alexandre,P.R.S.
RESUMO  A resistência à tração e o diâmetro são características de grande importância na avaliação da qualidade de fios de sutura, estando relacionados à capacidade destes de suportar o estresse promovido pelas forças atuantes em determinados tecidos. Desta forma, objetivou-se com este estudo avaliar as propriedades mecânica e dimensional de fios de sutura à base de quitosana, comparando-as com as preconizadas pela norma NBR 13904/2003. Tais propriedades foram avaliadas usando-se uma máquina de ensaio universal e um micrômetro digital. Os parâmetros mecânico e dimensional analisados foram a resistência quanto à tração, a deformação, bem como o diâmetro, respectivamente. O valor médio do diâmetro dos fios de quitosana apresentou variação e observou-se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomecânica; Polímero; Quitina; Tênsil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400896

Microbiota bacteriana de ovos de jacaré-do-pantanal incubados naturalmente
Provedor de dados: 45
Autores: Pulcherio,R.; Maruyama,F.H.; Dorado-Rodrigues,T.; Silveira,M.; Dutra,V.; Ferraz,R.
RESUMO A cadeia produtiva do Caiman yacare tem-se destacado no Mato Grosso com a exportação de 143.386 peles em 2015, cujo sistema de manejo (ranching) implica a incubação artificial dos ovos. Nesse processo, a contaminação bacteriana de ovos influencia a taxa de eclosão. O conhecimento da microbiota de ovos incubados naturalmente orienta o manejo sanitário adequado no incubatório. No presente estudo, são apresentadas informações sobre essa microbiota e sua correlação com a de outros crocodilianos, apontando-se as espécies com potencial patogênico. Amostras de 20 ninhos de C. yacare foram coletadas e semeadas em ágar sangue e ágar Mac Conckey. A colônia condizente com Salmonella sp. foi confirmada pela técnica de reação em cadeia de polimerase. Das 22...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ranching; Criação comercial; Enterobactéria; Microbiota; Ninho.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601676

Toxoplasma gondii in milk of naturally infected dairy ewes on west mesoregion of Santa Catarina state, Brazil
Provedor de dados: 45
Autores: Ossani,R.A.; Borges,H.A.T.; Souza,A.P.; Sartor,A.A.; Miletti,L.C.; Federle,M.; Moura,A.B.
ABSTRACT This study aimed to detect Toxoplasma gondii in the milk of dairy sheep in the Western mesorregion of state of Santa Catarina by bioassay (22 milk samples from eight ewes seropositive; IFA ≥256) and PCR [for the detection of agent in the brains of mice inoculated on bioassay and directly from milk (108 samples from 42 seropositive ewes (IFA, ≥64) in different lactation periods)]. T. gondii DNA was detected in mice brains inoculated with milk from eight sheep (a sample of the 45th day of lactation and seven in the collection of 90th day) and directly from the milk in samples of the second collection (90 days) in five animals. Taking into account both assays, from a total of 42 ewes in lactation and seropositive for T. gondii, 30.95% (13/42) of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxoplasma gondii; Milk sheep; PCR; Santa Catarina state.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501294

Excesso de tiroxina materna associado ao hipertireoidismo pós-natal reduz o crescimento ósseo e o perfil proliferativo e angiogênico das cartilagens de crescimento de ratos
Provedor de dados: 45
Autores: Ribeiro,L.G.R.; Silva,J.F.; Ocarino,N.M.; Melo,E.G.; Serakides,R.
RESUMO Foram estudados os efeitos do excesso da tiroxina materna associado ao hipertireoidismo pós-natal sobre o crescimento ósseo e o perfil proliferativo e angiogênico das cartilagens. Dezesseis ratas Wistar adultas foram distribuídas nos grupos tratados com L-tiroxina e controle. A prole do grupo tratado recebeu L-tiroxina do desmame até 40 dias de idade. Ao desmame, foi realizada dosagem plasmática de T4 livre nas mães. Na prole, foram realizados: dosagem plasmática de T3 total e T4 livre, morfometria das tireoides, mensuração do comprimento e largura do fêmur. Nas cartilagens, foi avaliada a expressão imuno-histoquímica e gênica de CDC-47, VEGF, Flk-1, Ang1, Ang2 e Tie2. As médias entre grupos foram comparadas pelo teste T de Student. As concentrações...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rato; Tiroxina; Hipertireoidismo congênito; Cartilagem de crescimento; Angiogênese.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400962

Utilização do yacon ( Smallanthus sonchifolius ) na proteção contra colonização intestinal de frangos de corte infectados por Salmonella Enteritidis
Provedor de dados: 45
Autores: Oliveira,M.G.X.; Porretta,M.C.; Itaya,N.M.; Oliveira,M.C.V.; Reple,J.N.; Cunha,M.P.V.; Sanches,L.A.; Davies,Y.M.; Menão,M.C.; Borges,J.C.S.; Polaquini,L.E.M.; Knöbl,T.
RESUMO Os frutanos do tipo inulina são oligossacarídeos que favorecem a multiplicação de determinados gêneros bacterianos no intestino, promovendo um efeito prebiótico. Este trabalho avaliou o efeito da inulina extraída de raízes de yacon (Smallanthus sonchifolius) sobre a colonização intestinal de frangos de corte experimentalmente infectados por Salmonella Enteritidis. Sessenta frangos de corte com um dia de idade foram divididos em três grupos de tratamento, com duas repetições, criados até 21 dias. As aves do grupo yacon receberam 100mg de inulina/dia, via oral, por três dias consecutivos. No sétimo dia de vida, as aves tratadas e o controle positivo foram desafiados pela via oral com uma cultura de S. Enteritidis. Não foram observadas diferenças de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicultura; Inulina; Prebióticos; Salmonella.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300695

Estimativa das perdas de produção leiteira em vacas mestiças Holandês x Zebu com mastite subclínica baseada em duas metodologias de análise
Provedor de dados: 45
Autores: Costa,H.N.; Molina,L.R.; Lage,C.F.A.; Malacco,V.M.R.; Facury Filho,E.J.; Carvalho,A.Ú.
RESUMO Contagem de células somáticas (CCS) e produção de leite de vacas mestiças Holandês x Gir foram utilizadas para avaliação da perda de produção de leite estimada por duas metodologias, baseadas na CCS média da lactação total encerrada ou na CCS e nas pesagens de leite em diferentes estágios de lactação. Nas primíparas consideradas com mastite subclínica (CCS ≥ 200.000 células mL-1), a perda de produção na lactação total, avaliada pela CCS média da lactação, foi de 814kg. Para as multíparas, não houve diferença na produção de leite entre vacas com e sem MSC com base na CCS média da lactação. A estimativa avaliada por meio de testes mensais de CCS e pesagens de leite em diferentes estágios de lactação, balanceada pela prevalência de mastite subclínica...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vacas leiteiras; Contagem de células somáticas; Inflamação; Glândula mamária.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300579

Age influence on quality of shell and penetration in bacterial laying lightweight eggs
Provedor de dados: 45
Autores: Smaniotto,B.D.; Amarante,A.F.; Altarugio,R.; Silva,I.G.O.; Corrêa,I.M.O.; Pereira,L.Q.; Sartori,M.M.P.; Andreatti Filho,R.L.; Guimarães-Okamoto,P.T.C.; Okamoto,A.S.
ABSTRACT This study evaluated the influence of the bird’s age on the quality of the shell and percentage of bacterial penetration in commercial eggs. White-shelled commercial eggs were used, laid by light laying hens in their first laying cycle at 21, 39, 51, and 62 weeks of age. Shell quality evaluations comprised: egg weight, specific gravity, percentage and thickness of shell, number and size of pores. For evaluations regarding bacterial penetration, strains of several enterobacterias and one salmonella were used, all of which resistant to Nalidixic acid (100µg/ml). The method employed for evaluation of bacterial penetration was filling the eggs with growth medium. The data were subjected to variance analysis with 5% of probability using SAS (Education...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry; Bacterial contamination; Eggs; Enterobacteria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501301

Efeito de diferentes aditivos zootécnicos sobre a qualidade de ovos em duas fases produtivas da codorna
Provedor de dados: 45
Autores: Lemos,M. de; Calixto,L.F.; Souza,D.; Torres,K.A.; Reis,T.; Coelho,L.; A. Filho,C.
RESUMO Com o objetivo de avaliar a qualidade dos ovos de codornas alimentadas com diferentes aditivos em duas fases de produção, 360 codornas foram distribuídas em um delineamento inteiramente ao acaso, em esquema de parcela subdividida no tempo (de nove até 23 e de 24 até 39 semanas de idade), com cinco tratamentos e oito repetições de nove aves cada, organizados da seguinte forma: controle, antibiótico, prebiótico, probiótico e simbiótico. As variáveis analisadas foram: unidade Haugh, índice de gema, porcentagem dos componentes do ovo, espessura de casca medida pelo micrômetro e pelo MEV. O fornecimento dos aditivos no segundo período aumentou a unidade Haugh e nos dois períodos avaliados proporcionou aumento da porcentagem de gema e de casca e da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiótico; Prebiótico; Probiótico; Simbiótico.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300751

Amendoim forrageiro manejado com baixos resíduos de pastejo por ovinos
Provedor de dados: 45
Autores: Alonzo,L.A.G.; Ferreira,O.G.L.; Vaz,R.Z.; Costa,O.A.D.; Motta,J.F.; Brondani,W.C.
RESUMO O objetivo do trabalho foi estudar o comportamento produtivo do amendoim forrageiro (Arachis pintoi cv. Amarillo) sob diferentes intensidades de pastejo por ovinos em ambiente rotativo. Os tratamentos corresponderam a quatro intensidades de pastejo (muito leniente - ML, leniente - L, moderado - M e severo - S) representadas pelas alturas de resíduo de 11,2; 8,4; 5,9 e 3,2cm, que foram alocadas segundo um delineamento inteiramente ao acaso, com quatro repetições. As variáveis estudadas no pré e no pós-pastejo foram: massa de forragem, percentual de folhas e caules e índice de área foliar. Ao final do experimento, foi calculada a massa de forragem total acumulada, a taxa de acúmulo e a massa de forragem desaparecida. Os dados foram submetidos à...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis pintoi; Leguminosa forrageira; Lotação rotacionada; Resíduo de pastejo.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100173

Características produtivas e nutricionais do feno de trigo cultivado em dois níveis de adubação nitrogenada e estádios de colheita
Provedor de dados: 45
Autores: Wrobel,F.L.; Neumann,M.; Leão,G.F.M.; Horst,E.H.; Ueno,R.K.; Carneiro,M.K.; Perussolo,L.F.
RESUMO O objetivo do presente trabalho foi avaliar a produção de fitomassa fresca e de fitomassa seca, assim como a composição física e bromatológica do feno do trigo cultivar BRS Umbu sob efeitos de dois níveis de adubação nitrogenada (120kg ha-1 e 180kg ha-1) e dois estádios fenológicos de colheita (pré-florescimento e grão farináceo). O delineamento experimental foi blocos ao acaso, em esquema fatorial 2x2, composto por quatro tratamentos com quatro repetições. Não houve interação (P&gt;0,05) entre os níveis de adubação nitrogenada e os estádios fenológicos de colheita para todas as variáveis. A produção de fitomassa seca (P&lt;0,05) nos estádios de grão farináceo e pré-florescimento foi de 10.171 e 4.982kg ha-1, respectivamente. A maior dose de N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cereais de inverno; Estádio fenológico; Forragem conservada; Ureia; Valor nutricional.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300725

Use of moxibustion as an auxiliary treatment in wound healing of the snake Eunectes murinus (anaconda): case report
Provedor de dados: 45
Autores: Garcia,V.C.; Prado,C.V.
ABSTRACT Large snakes of the Boidae family, such as Eunectes murinus, require special techniques to facilitate their care when they are sick. Thus, an acupuncture technique called moxibustion was applied that utilizes burning of the weed Artemisia vulgaris for heating at specific points on the skin without handling the animals. The objective of this case report was to describe the use of moxibustion acupuncture as an auxiliary treatment for snakes. A female, 4.0 meters long and weighing about 30 kg, belonging to a Biological Museum of the Butantan Institute, showed symptoms of weight loss, anorexia and hyperemia in the ventral region. The snake was examined and treated with ciprofloxacin antibiotics and a month showed an area of necrosis that exposed the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snake; Acupuncture; Moxibustion; Artemisia vulgaris; Eunectes murinus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601560

Sistema de grupos sanguíneos AB em felídeos neotropicais e compatibilidade com gatos domésticos
Provedor de dados: 45
Autores: Silva,T.D.P.; Dreyer,M.O.; Back,F.P.; Lacerda,L.A.; Damasceno,A.D.; Araújo,L.B.M.; Sant’Ana,F.J.F.; Fioravanti,M.C.S.
RESUMO O principal sistema de grupos sanguíneos reconhecido para gatos é o AB. Os felinos apresentam anticorpos naturais contra o antígeno do tipo sanguíneo a que não pertencem, o que torna os testes de compatibilidade e as tipagens sanguíneas importantes na prevenção de reações transfusionais. O objetivo deste estudo foi realizar a tipagem sanguínea de oito gatos-mouriscos (Puma yagouaroundi), oito jaguatiricas (Leopardus pardalis), sete gatos-palheiros (Leopardus colocolo), sete gatos domésticos (Felis catus) da raça Persa e oito gatos domésticos sem raça definida (SRD), bem como realizar testes de compatibilidade entre os tipos sanguíneos iguais das diferentes espécies, para avaliar a possibilidade de transfusões interespecíficas. A técnica empregada...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Felis colocolo; Leopardus pardalis; Puma yagouaroundi; Tipos sanguíneos; Xenotransfusão.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400889

Use of ractopamine during compensatory gain of finishing pigs on carcass and meat performance and quality
Provedor de dados: 45
Autores: Barbosa,E.M.J.; Bridi,A.M.; Novais,A.K.; Santos,R.K.S.; Frederico,G.; Alves,J.B.; Barata,C.C.P.; Santos,E.R.; Silva,C.A.
ABSTRACT The objective of this study was to evaluate the effects of compensatory gain associated with the use of 10ppm ractopamine after a period of feed restriction in finishing pigs on performance, carcass and meat quality. Twenty castrated males and 20 females, at 110 days of age and 66.137±6.13kg live weight, were submitted to four treatments using a 2 x 2 factorial design (fed ad libitum or with 20% restriction between 0(21 days of age and fed with or without 10ppm ractopamine for 22(42 days of experimentation), with 10 replicates (animals). There was no interaction between the factors for any of the evaluated parameters. Animals treated with ractopamine presented better weight gain (1.083 versus 1.259kg), feed conversion (2.910 versus 2.577), warm...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Swine; Beta-adrenergic; Fat; Food management; Weight gain.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601660

COMPARAÇÃO ENTRE METODOLOGIAS USEPA E IPCC PARA ESTIMATIVA TEÓRICA DE PRODUÇÃO DE BIOGÁS EM ATERRO MUNICIPAL
Provedor de dados: 193
Autores: Bianek, Julia; Schirmer, Waldir Nagel; Cabral, Alexandre Rodrigues; Mayer, Cléverson Luiz Dias; Eurich, Pedro Henrique Mildemberger; Martins, Eduardo Henrique.
O aproveitamento energético do biogás de aterros sanitários é uma alternativa sustentável para a disposição final de gases residuais. A estimativa teórica da produção desse biogás torna-se uma ferramenta útil para a avaliação de viabilidade e dimensionamento de sistemas de coleta de gás. Os modelos de geração de biogás de aterro mais utilizados atualmente são os baseados em equações de decaimento de primeira ordem. Os modelos LandGEM e IPCC foram utilizados neste trabalho para a estimativa da geração de gases no aterro municipal de Guarapuava (PR, Brasil), onde os principais parâmetros foram escolhidos com base nos dados frequentemente aplicados para cada modelo: valores default sugeridos para as condições locais específicas, para a aplicação do software...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Engenharia Ambiental; Bioenergia Aproveitamento energético; Bioenergia; LandGEM; Resíduos sólidos urbanos (RSU).
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56038

MODELAGEM DA RELAÇÃO HIPSOMÉTRICA PARA UM POVOAMENTO DO HÍBRIDO DE EUCALIPTO NA AMAZÔNIA BRASILEIRA
Provedor de dados: 193
Autores: de Souza, Alex Soares; dos Santos, Joielan Xipaia; Souza, Deivison Venicio.
Este trabalho objetivou ajustar modelos hipsométricos tradicio­nais, para um povoamento híbrido (Eucalyptus urophylla e Eucalyptus grandis) aos oito anos de idade, no município de Paca­já, Pará. Foram estabelecidas quatro unidades de amostras qua­dra­das de 30 m x 30 m, totalizando 3.600 m² de área amostrada, sob o processo de amostragem inteiramente aleatório. Foram testa­dos 17 modelos hipsométricos matemáticos de natureza logarít­mica e aritmética. Os critérios de seleção dos modelos foram: i) signifi­cância da estatística F da Análise de Variância (ANOVA) da regres­são; ii) coeficiente de determinação ajustado (R²aj.); iii) erro pa­drão da estimativa em porcentagem (Syx%); iv) desvio médio percentual (DMP%) e v) análise gráfica dos resíduos. A maioria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Florestais; Recursos Florestais Clones de Eucalyptus; Equações hipsométricas; Modelos tradicionais Modelagem.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/51395

Editorial - Especial I MECFOR
Provedor de dados: 193
Autores: BIOFIX Scientific Journal, Equipe Editorial.
Prezados leitores,O presente número especial da edição 2017 da revista BIOFIX Scientific Journal apresenta os seis melhores trabalhos científicos divulgados no I Encontro Sobre Mecanização, Colheita e Transporte Florestal (MECFOR), realizado nos dias 18 e 19 de maio de 2017 em Curitiba, Paraná.Os artigos científicos versam sobre os temas:Modelagem da biomassa residual da colheita de madeira em povoamentos submetidos ao desbaste com harvesterAnálise quantitativa do risco técnico-econômico de um trator florestal skidderProdutividade do processamento mecanizado da madeira de pinus nos sistemas full tree e cut to length em diferentes volumes individuaisExposição ocupacional ao calor na exploração florestal: regime de pausas da norma brasileira versus regime...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56332

MODELAGEM DA BIOMASSA RESIDUAL DA COLHEITA DE MADEIRA EM POVOAMENTOS SUBMETIDOS AO DESBASTE COM HARVESTER
Provedor de dados: 193
Autores: Rodrigues, Carla Krulikowski; Lopes, Eduardo da Silva; Figueiredo Filho, Afonso; Silva, Dimas Agostinho da.
Objetivou-se neste estudo ajustar modelos matemáticos para a estimativa da biomassa residual da colheita de madeira em povoamentos submetidos ao desbaste utilizando dados mensurados pelo harvester. O estudo foi realizado em uma empresa florestal localizada no município de Quedas do Iguaçu, Paraná. Os povoamentos avaliados foram de Pinus taeda L. submetidos ao desbaste nas idades de 7, 8, 9 e 10 anos. Através de um inventário florestal, cubagem com a simulação das medidas obtidas pelo cabeçote harvester e obtenção da biomassa seca dos resíduos, ou seja, acículas, casca, galhos e ponteiras, ajustou-se modelos de biomassa seca dos componentes das árvores presentes na biomassa residual. Por meio do método Stepwise, realizou-se a seleção das variáveis: idade do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioenergia; Planejamento; Mensuração Florestal.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56337

PANORAMA DOS COMBUSTÍVEIS E BIOCOMBUSTÍVEIS NO BRASIL E AS  EMISSÕES GASOSAS DECORRENTES  DO USO DA GASOLINA/ETANOL
Provedor de dados: 193
Autores: Ribeiro, Camilo Bastos; Schirmer, Waldir Nagel.
A busca por alternativas para reduzir a extração do petróleo e a preocupação com a emissão de poluentes na atmosfera reforçam cada vez mais a importância da produção comercial dos biocom­bustíveis. Nesse cenário, desde a década de 1970, o etanol é co­mercializado no Brasil, e desde 2005 existem esforços para o bio­diesel alcançar proporções significativas na matriz energética bra­sileira. A literatura referente às emissões gasosas oriundas da queima de diesel/biodiesel e gasolina/etanol reporta a redução significativa de hidrocarbonetos (HC) e monóxido de carbono (CO), quando os biocombustíveis são adicionados aos combustí­veis fósseis. O presente trabalho aborda uma breve revisão da si­tuação atual dos combustíveis e biocombustíveis líquidos utiliza­dos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Engenharia Ambiental; Bioenergia; Recursos Naturais Renováveis Bioenergia; Motores do ciclo Otto; Poluição atmosférica.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/53539

CRESCIMENTO DE ÁREA FOLIAR E ÍNDICE DE ÁREA FOLIAR DE MUDAS DE Cordia americana EM DIFERENTES FORMAS DE MANEJO
Provedor de dados: 193
Autores: Trautenmüller, Jonathan William; Borella, Juliane; Minatti, Myrcia; Costa Júnior, Sergio; Woycikievicz, Antônio Pedro Fragoso; Balbinot, Rafaelo; Engel, Kauana.
A área foliar apresenta estreita relação com a interceptação da energia solar. Dessa forma, o objetivo do presente estudo foi avaliar a área foliar e o índice de área foliar em mudas de Cordia americana quando submetidas as diferentes condições de cultivo, de volumes de recipientes (90 e 170 cm³) e de densidade de cultivos (50 e 100% de ocupação da bandeja). O delineamento foi de blocos casualizados em esquema fatorial 5 x 2 x 2, com cinco repetições e 10 plantas avaliadas em cada unidade amostral. Foram realizadas cinco avaliações com intervalos de 20 dias, iniciadas a partir dos 60 dias após a emergência, em que os parâmetros biofísicos avaliados foram à área foliar e o índice de área foliar. Com os resultados, verificou-se que apenas o volume de tubete...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silvicultura; Produção de mudas; Espécies nativas Guajuvira; Manejo de plantas; Volume de recipiente.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55508

IDENTIDADE DE MODELOS HIPSOMÉTRICOS E VOLUMÉTRICOS DE POVOAMENTOS DE PINUS COM DIFERENTES IDADES SUBMETIDOS AO DESBASTE MECANIZADO
Provedor de dados: 193
Autores: Rodrigues, Carla Krulikowski; Lopes, Eduardo da Silva; Figueiredo Filho, Afonso; Pelissari, Allan Libanio.
Objetivou-se neste estudo verificar a identidade de modelos hipsométricos e volumétricos em povoamentos de Pinus taeda L., com diferentes idades submetidos ao primeiro desbaste mecanizado. O estudo foi realizado em uma empresa florestal localizada no município de Quedas do Iguaçu, estado do Paraná. Avaliou-se povoamentos nas idades de 7, 8, 9 e 10 anos em sítios de alta produtividade e em condições semelhantes de solo e relevo. Inicialmente realizou-se um inventário florestal e cubagem de 47 árvores distribuídas em 12 classes de diâmetro e quatro idades, sendo testados três modelos para a estimativa da altura total e volume individual das árvores. O melhor modelo selecionado foi avaliado pelo teste de Graybill, para verificação da possibilidade do uso de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manejo Florestal; Mensuração Florestal; Dendrometria Altura total; Volume individual; Teste de identidade de Graybill.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/51947

MUDANÇAS SOCIOECONÔMICAS E NA GESTÃO DE RESÍDUOS APÓS IMPLEMENTAÇÃO DE UMA COOPERATIVA DE RECICLAGEM
Provedor de dados: 193
Autores: Ravanello, Bárbara; Maas, Greyce.
Foram analisadas as mudanças socioeconômicas com os antigos catadores e atuais cooperados e as mudanças na coleta e destinação dos resíduos sólidos urbanos após a implementação de uma cooperativa de reciclagem em União da Vitória – PR. Foram entrevistados 70% dos cooperados e analisados os dados da Prefeitura Municipal e da Secretaria do Meio Ambiente referentes à quantificação dos resíduos. O percentual de resíduos coletados encaminhados para usinas de separação de recicláveis aumentou de 2% para 16%. Dos resíduos recicláveis coletados, 71% são enviados para reciclagem e 29% para aterro sanitário. A média per capita de resíduos recicláveis recuperados é de 25,56 kg.hab-1.ano-1, superior à média nacional e da região sul. A cooperativa proporcionou melhoria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catadores; Coleta seletiva; Lixo; Perfil socioeconômico; Recicláveis.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/50488

MAPEAMENTO DAS ÁREAS PLANTADAS DE Eucalyptus spp. NO ESTADO DO PARANÁ
Provedor de dados: 193
Autores: Coutinho, Vinícius Morais; Corte, Ana Paula Dalla; Sanquetta, Carlos Roberto; Hentz, Ângela Maria Klein; Eisfeld, Rozane Loyola; do Nascimento, Flávio Augusto Ferreira.
O objetivo deste trabalho foi mapear e quantificar as áreas com plantações de Eucalyptus spp. no estado do Paraná. Para tal, fo­ram utilizados dados de áreas geoespacializadas de povoamentos florestais com classificação visual de imagens de satélite e validados com base em 988 pontos observados em campo. A área total plantada com Eucalyptus no estado totalizou 340.315 ha, o que representa 1,71% da superfície do estado. A região Centro-Sul possui 61,91% do total plantado com Eucalyptus no estado, a qual concentra a maior parte do parque industrial flo­restal. Vinte e cinco municípios do estado possuem mais da meta­de da área plantada com Eucalyptus, esses municípios encontram-se na região Centro-Sul, com destaque para o núcleo de Ponta Grossa, com mais de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Engenharia Florestal; Manejo Florestal; SIG Classificação; Geoespacializados; Povoamentos florestais Mapeamento das áreas plantadas com Eucalyptus spp. no Estado do Paraná.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/51222

COMPARAÇÃO DE MÉTODOS DE QUANTIFICAÇÃO DE CARBONO EM BRACATINGA (Mimosa scabrella Benth.)
Provedor de dados: 193
Autores: Martins, Ana Paula Marques; Carvalho, Renata Reis de; Andrade, Clarice de; Sanquetta, Carlos Roberto.
O trabalho teve como objetivo comparar métodos de quantificação de carbono em bracatinga. Foi determinada a biomassa fresca do fuste, galhos, folhas e raízes de 30 árvores provenientes de General Carneiro-PR. A biomassa fresca foi convertida em seca após as análises em laboratório. Os teores de carbono (TC) foram determinados no equipamento LECO C-144. Os estoques individuais de carbono foram obtidos pela multiplicação das biomassas secas pelos respectivos TC. Foram calculados os fatores de expansão de biomassa (FEB) e a Razão de Raízes (R). Os métodos de estimativa de carbono analisados foram: Biomassa do fuste (bf) combinada com FEB, R e teor médio de carbono (TCméd); bf combinada com FEB, R e teor ponderado de carbono (TCpond); e equações alométricas de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias; Ciências Ambientais Equação alométrica; Fator de expansão de biomassa; Carbono Biomassa e Carbono.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/50329

PARÂMETROS OPERACIONAIS DO PROCESSO DE DIGESTÃO ANAERÓBIA DE RESÍDUOS ALIMENTARES: UMA REVISÃO
Provedor de dados: 193
Autores: Gueri, Matheus Diniz; de Souza, Samuel Nelson Melegari; Kuczman, Osvaldo.
A geração de resíduos alimentares cresce conforme aumenta a demanda por alimentos, sendo atrelada a toda a cadeia de produção alimentar. Isso evidencia que novas técnicas devem ser desenvolvidas para assegurar o manejo e o tratamento adequado desses resíduos. A digestão anaeróbia surge então como uma alternativa promissora para o tratamento desses resíduos, que simultaneamente promove a geração de energia limpa e renovável. Sendo assim, a presente pesquisa teve por objetivo elucidar as principais características sobre os parâmetros operacionais da digestão anaeróbia de resíduos alimentares. Os resultados apresentam os problemas encontrados na digestão anaeróbia bem como suas possíveis soluções, descrevendo as características operacionais envolvidas....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestão Anaeróbia; Resíduos Sólidos Urbanos  Biogás; Sustentabilidade; Tratamento de Resíduos.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55837

PERCOLADO DE NITRATO EM CAMBISSOLO ADUBADO COM DIFERENTES DOSES DE BIOSSÓLIDO
Provedor de dados: 193
Autores: Steffler, Marcelo; Steffler, Venicio; Gueri, Matheus Vitor Diniz; Martins, Kelly Geronazzo.
Uma das preocupações com o uso de lodo de esgoto no solo agrícola refere-se ao risco de poluição das águas subterrâneas causada pela lixiviação de nitrato, o que torna necessário mais pesquisas a esse respeito. Nesse contexto, o presente estudo objetivou avaliar o comportamento de três diferentes doses de biossólido oriundo da estação de tratamento de esgoto do Rio das Antas de Irati, Paraná. Foram misturados biossólido com Cambissolo nas dosagens de 2,5; 5,0; e 7,5%; em seguida, as amostras foram inseridas em colunas de PVC com o fundo vazado, que permitiram a captação da água percolada para realização das análises de nitrato.  Os resultados comprovaram que doses de até 25 t.ha-1 não implicam em aumento significativo de nitrato no percolado, porém doses...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Percolado de nitrato  águas subterrâneas  poluição hídrica Adubação; Lodo de esgoto; Poluição do lençol freático.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55223

EMISSÕES DE DIÓXIDO DE CARBONO ASSOCIADAS AO CONSUMO DE ENERGIA ELÉTRICA NO PARANÁ NO PERÍODO 2010-2014
Provedor de dados: 193
Autores: Sanquetta, Carlos Roberto; Maas, Greyce Charllyne Benedet; Sanquetta, Mateus Niroh Inoue; Sanquetta, Felipe Taroh Inoue; Corte, Ana Paula Dalla.
O Paraná é o líder na geração nacional de energia elétrica, respondendo por 16,74% da produção. O Estado também é um grande consumidor de energia elétrica, participando com 6,22% em escala nacional. A energia elétrica é responsável pela emissão de gases de efeito estufa (GEE), dentre os quais o dióxido de carbono (CO2) é o mais expressivo. Este trabalho quantificou e analisou as emissões de CO2 associadas ao consumo de energia elétrica no Estado do Paraná no período 2010-2014. Dados do Anuário Brasileiro de Energia 2015 e de fatores de emissão do Sistema Interligado Nacional (SIN) foram empregados para os cálculos. Estimou-se as emissões em 2010 em 1,3 milhão de toneladas de CO2 equivalente (CO2e), a qual saltou para 4,1 milhões em 2014. Esse aumento...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Efeito estufa; Eletricidade; Fator de emissão; Impacto ambiental.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/50095

ANÁLISE DO POTENCIAL DE GERAÇÃO DE BIOGÁS A PARTIR DA BIODIGESTÃO ANAERÓBIA DA VINHAÇA E BAGAÇO DE CANA
Provedor de dados: 193
Autores: Penteado, Mauricio Cabral; Schirmer, Waldir Nagel; Dourado, David Cardoso; Gueri, Matheus Victor Diniz.
Considerando a busca por fontes de energias alternativas aos combustíveis fósseis, o presente trabalho teve como objetivo analisar o potencial de geração de biogás a partir da codigestão da vinhaça e bagaço de cana-de-açúcar em reatores de bancada próprios à determinação do potencial bioquímico de metano (BMP). Para isso, a produção de biogás foi avaliada durante 21 dias de biodigestão em biodigestores anaeróbios de bancada sob condições mesofílicas e regime de batelada. A pressão interna dos frascos foi monitorada diariamente, a qual foi convertida em termos de geração de biogás diária e acumulada. Parâmetros como pH, demanda química de oxigênio (DQO) e umidade foram medidos nos três tratamentos avaliados (vinhaça, bagaço e codigestão da vinhaça e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Engenharia Ambiental; Bioenergia Bioenergia; Energias renováveis; Indústria sucroalcooleira; Potencial bioquímico do metano.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56013

DIGESTÃO ANAERÓBIA DE RESÍDUOS ALIMENTARES UTILIZANDO ENSAIOS BMP
Provedor de dados: 193
Autores: Gueri, Matheus Vitor Diniz; de Souza, Samuel Nelson Melegari; Kuczman, Osvaldo; Schirmer, Waldir Nagel; Buratto, William Gouvêa; Ribeiro, Camilo Bastos; Besinella, Geovanny Broetto.
A preocupação com a preservação do meio ambiente e a necessidade de diversificação da matriz energética são alguns dos fatores que têm impulsionado a busca por energias alternativas. Nesse contexto, o presente trabalho analisou o processo de digestão anaeróbia de resíduos alimentares provenientes de um restaurante popular, observando o potencial bioquímico da geração de metano. O experimento consistiu no uso de reatores anaeróbios em regime batelada com volume de 250 mL, sendo 150 mL de volume útil à geração de biogás (headspace) e 100 mL remanescente preenchido nas proporções de 1:1 de substrato:inoculo, em relação ao teor de sólidos voláteis (gSVinoculo:gSVsubstrato). Os reatores foram operados por 30 dias sob temperatura constante em 30°C. Os resultados...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resíduos Sólidos; Digestão anaeróbia; Biogás Biogás; Energias Renováveis; Potencial Bioquímico de Metano; Resíduos Alimentares.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55831

GERMINAÇÃO E DESENVOLVIMENTO DE PLÂNTULAS DE Bauhinia variegata Linn.
Provedor de dados: 193
Autores: Van de Riet, Gert Jan; da Silva, Samuel Alves; Labres dos Santos, João Francisco; Nikkel, Anderson; Maçaneiro, Gustavo.
A espécie Bauhinia variegata é conhecida por apresentar propriedades medicinais e utilização na arborização urbana. Embora existam diversos trabalhos que tratem de métodos de quebra de dormência para espécies pertencentes ao gênero Bauhinia, o desenvolvimento das plântulas é pouco abordado. Dessa forma, o objetivo do presente estudo foi testar a eficiência de quatro métodos de quebra de dormência para sementes de B. variegata, considerando o desenvolvimento das plântulas em comprimento da parte aérea e da raiz. Em um delineamento inteiramente casualizado, foram testados os métodos de imersão em água aquecida (80°C) por 10 minutos, escarificação mecânica com lixa nº 80, desponte na região oposta à micrópila e imersão em álcool etílico 70% durante 10...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservação Florestal Dormência; Escarificação; Sementes.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/54623

MODELO DE FOMENTO FLORESTAL NAS INSTITUIÇÕES ESTADUAIS NOS ESTADOS DO SUL, SÃO PAULO E MINAS GERAIS
Provedor de dados: 193
Autores: Eisfeld, Rozane de Loyola; Socher, Luis Gustavo; Ribeiro, Corina Carril.
O presente trabalho teve como objetivo avaliar estratégias de fo­mento florestal adotadas pelas instituições públicas nos estados do Sul, São Paulo e Minas Gerais, além de analisar as linhas de cré­dito disponíveis para o setor e as dificuldades para acessá-las. Para tal fim, realizou-se um levantamento bibliográfico dessas informa­ções e entrevistas in loco com os técnicos de cada instituição. Na análise das linhas de crédito, conclui-se que o país avançou consi­deravelmente na quantidade e na diversidade de linhas, com re­cursos, taxas e tempo de carência adequados. A análise dos pro­gramas de fomento mostrou um modelo de fomento completo para o Paraná, contendo cinco treinamentos e assistência técnica, desde a elaboração de projeto para o financiamento...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fomento Florestal; Política Florestal Produtor rural; Estratégia; Extensão rural; Linhas de crédito.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/53230

INFLUÊNCIA DAS CONDIÇÕES AMBIENTAIS NO CRESCIMENTO DE DOIS GRUPOS ARBÓREOS EM FLORESTA COM ARAUCÁRIA
Provedor de dados: 193
Autores: Abrão, Simone Filipini; Rizzi, Nivaldo Eduardo; Pelissari, Allan Libanio; Machado, Sebastião do Amaral.
O crescimento da vegetação está relacionado com a disponibilidade de recursos naturais e a capacidade de cada espécie em utilizá-los. Por isso, o objetivo deste estudo foi avaliar o crescimento de dois grupos arbóreos: Grupo 1, correspondente a espécie Araucaria angustifolia; e Grupo 2, representado pelas dez espécies com maior valor de importância em uma Floresta Ombrófila Mista. Para isso, as seguintes hipóteses foram formuladas: a Araucaria angustifolia apresenta crescimento diferenciado das espécies mais representativas em função de características ambientais em que está localizada? e quais locais podem ser prioritários para o manejo dessa espécie? Este estudo foi realizado na Floresta Nacional de São Francisco de Paula, estado do Rio Grande do Sul,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservação da Natureza; Manejo Florestal Araucaria angustifolia; Incremento; Características edáficas.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/53634

MANUTENÇÃO PREVENTIVA COMO DETERMINANTE PARA REDUÇÃO DE CUSTOS DE MANUTENÇÃO DE UM FELLER BUNCHER
Provedor de dados: 193
Autores: Diniz, Carlos Cezar Cavassin; Lopes, Eduardo da Silva; Miranda, Gabriel de Magalhães; Koehler, Henrique Soares.
Este trabalho avaliou a atividade de manutenção mecânica de um feller buncher empregando a World Class Maintenance (WCM), que utiliza como premissa a manutenção preventiva, visando a redução dos custos de produção e melhor aproveitamento dos recursos disponíveis. O trabalho foi conduzido em plantios de Pinus taeda e Eucalyptus grandis de uma empresa florestal localizada no estado do Paraná, Brasil. A análise contemplou três períodos subsequentes de seis meses, sendo eles: implantação, amadurecimento e estabilização do modelo WCM. A avaliação foi realizada por meio da determinação dos índices de disponibilidade mecânica, consumo de óleo hidráulico e custos da manutenção. Os resultados mostraram que houve aumento na disponibilidade mecânica do equipamento de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manejo florestal; Colheita florestal Corte florestal; Mecanização; World Class Maintenance.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/54954

ANÁLISE QUANTITATIVA DO RISCO TÉCNICO-ECONÔMICO DE UM TRATOR FLORESTAL SKIDDER
Provedor de dados: 193
Autores: Miyajima, Ricardo Hideaki; Tonin, Rodrigo Petrongari; Fenner, Paulo Torres; Simões, Danilo.
Os custos da colheita florestal, de forma abrangente, podem ser definidos como a quantificação econômica dos fatores produtivos, determinados em sua maioria pelo modal utilizado. Todavia, um elemento presente no conhecimento dos custos desses modais é a incerteza nas estimativas, devido ao conjunto de fatores envolvidos ou da insuficiência de informações. À vista disso, objetivou-se neste estudo construir um modelo estocástico, a partir da produtividade operacional de um trator florestal skidder empregado na extração de Eucalyptus sp., para quantificar os riscos técnico-econômicos por meio da simulação de Monte Carlo. A análise técnico-econômica teve como premissa o estudo de tempos e métodos, seguida da estimativa do custo horário do trator florestal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colheita florestal; Custos de extração; Monte Carlo; Silvicultura; Tempos e métodos.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56339

EMISSÃO DE GASES DE EFEITO ESTUFA E PROPOSTA DE PROJETO PARA COMPENSAÇÃO: UM ESTUDO DE CASO E-COMMERCE
Provedor de dados: 193
Autores: Nunnenkamp, Christian Horst; Corte, Ana Paula Dalla.
O objetivo geral deste trabalho foi estimar a emissão de gases de efeito estufa (GEEs) de uma empresa de peças de decoração infantil e-commerce utilizando a metodologia GHG Protocol e propor um projeto de compensação ambiental. Foi criada uma metodologia para estimar as emissões do Escopo 3, considerando a posição geográfica do destinatário final para onde os produtos comercializados foram enviados. O estudo resultou em uma emissão total de 201,77 tCO2e e de 4,88 tCO2 biogênico, no âmbito dos três escopos. O projeto de compensação baseou-se em sequestro de carbono, por meio de plantio florestal. Com base em um modelo existente com sete cenários de plantios, com o uso de espécies de Eucalyptus, seria necessário um maior número de mudas para absorver a mesma...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dióxido de carbono; GHG Protocol; Inventário de emissões; Sequestro de carbono Emissões de GEE; GHG Protocol; Compensação de emissões; Sequestro de carbono Inventário de emissões de GEE e compensação ambiental.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/51086

ESTUDO DE CASO DA ADEQUAÇÃO DE UMA SERRARIA ÀS NORMAS FSC DE CADEIA DE CUSTÓDIA
Provedor de dados: 193
Autores: Pereira, Luara Castilho; Pelissari, Allan Libanio; Sanquetta, Carlos Roberto; Ebling, Angelo Augusto.
A certificação florestal tem se tornado, ao longo dos anos, não apenas uma medida de estratégia organizacional, mas também uma exigência de mercado, como o madeireiro. Como o mercado interno também tem se mostrado exigente em relação a procedência dos produtos que consome, este trabalho objetivou demonstrar as mudanças necessárias para adequar uma serraria aos princípios e normas FSC de Cadeia de Custódia. Analisando as normas e as leis vigentes, notou-se a necessidade da regularização e adequação de muitas atividades da empresa, como a organização de notas, os fatores de conversão, as leis trabalhistas e suas normas regulamentadoras. Após apontar cada mudança a ser efetuada, as dificuldades e as sugestões foram comentadas e uma cartilha de atendimento as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Certificação; Serraria de pequeno porte; Segurança do trabalho.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/50274

HIDRÓLISE ÁCIDA PARA PRODUÇÃO DE NANO LIGNINA EM PÓ
Provedor de dados: 193
Autores: Stygar Lopes, Marina; Elita Carneiro, Mayara; Sulato de Andrade, Alan; Potulski, Daniele Cristina.
O presente trabalho refere-se à produção e caracterização de nano lignina, ao utilizar uma hidrólise ácida em serragem, resíduo este gerado por serrarias. A nanotecnologia avança em diversos campos, devido ao seu grande potencial de novos usos para partículas em escala nanométrica. Consequentemente, o caráter renovável e biodegradável da lignina tem despertado interesse científico e econômico. A matéria prima deste estudo trata-se de serragem de Eucalyptus sp. Primeiramente, foi realizada a hidrólise ácida com ácido sulfúrico 72% na proporção 2:1. O material foi homogeneizado durante duas horas e então conservado em temperatura ambiente. Posteriormente, visando produzir a nano lignina, este material foi processado no moinho Microprocessador Super...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalipto; Resíduo; Serragem; Tecnologia.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56180

PRODUTIVIDADE DO PROCESSAMENTO MECANIZADO DA MADEIRA DE PINUS NOS SISTEMAS FULL TREE E CUT TO LENGTH EM DIFERENTES VOLUMES INDIVIDUAIS
Provedor de dados: 193
Autores: Scorupski, Antônio José; Oliveira, Felipe Martins de; Diniz, Carlos Cézar Cavassin; Lopes, Eduardo da Silva.
Este trabalho objetivou analisar o processamento da madeira na colheita mecanizada de Pinus sp. nos sistemas full tree e cut to length, para verificar qual apresenta maior rendimento de acordo com o volume médio individual (VMI) das árvores. O estudo foi realizado nas áreas operacionais de colheita da madeira de uma empresa florestal nos municípios de Jaguariaíva e Sengés, estado do Paraná, em povoamentos de 15 anos de idade em regime de corte raso. A coleta de dados foi realizada durante 12 meses por meio de controles diários de produção, com base no computador de bordo de cada máquina e na separação por classes de VMI, com os dados interpretados por meio de análise gráfica. Os resultados mostraram que houve equilíbrio nas produtividades do processamento...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colheita florestal; Harvester; Planejamento da colheita.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56344

DIMENSIONAMENTO E CLASSIFICAÇÃO DE RISCOS DA COLHEITA FLORESTAL EM RELEVO DECLIVOSO
Provedor de dados: 193
Autores: Nascimento, Kauê Augusto Oliveira; Catai, Rodrigo Eduardo.
A busca pela redução dos custos de produção leva as empresas florestais à procura de terras economicamente mais acessíveis para implantar suas atividades, como as áreas com declividade acentuada. Os efeitos potenciais da declividade no dimensionamento e no agravamento de riscos na colheita florestal motivaram este estudo, classificando-os para as ações e ocupações envolvidas no corte e na extração florestal. A classificação considerou as diretrizes das Normas Regulamentadoras número 9, 15, 17 e 31. Os ruídos e as temperaturas foram mensurados quantitativamente, enquanto a análise postural foi feita com auxílio do software Ergolândia 5.0, para dois métodos diferentes. Os riscos de acidentes foram determinados por bibliografia especializada com validação em...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cabos aéreos; Declividade; Segurança do trabalho.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56343

IMPACTO DO DESCASCAMENTO DE ÁRVORES DE Pinus taeda L. POR MACACOS-PREGO NA PRODUÇÃO E RECEITA EM PLANTIOS COM DESBASTES
Provedor de dados: 193
Autores: Liebsch, Dieter; Moreira, José Mauro Magalhães Ávila Paz; Oliveira, Edilson Batista; Mikich, Sandra Bos.
Os macacos-prego (Sapajus nigritus) descascam árvores de pinus para consumir seiva em períodos de escassez de frutos nos remanescentes de Floresta com Araucária onde vivem. Este trabalho teve por objetivo demonstrar como se dá a perda física e financeira da madeira de pinus com danos provocados por macacos-prego. O estudo utilizou dados de um povoamento de Pinus taeda L. com 25 hectares, localizado no município de General Carneiro, região Centro-Sul do estado do Paraná. Foram medidas toras colhidas em dois desbastes (10 e 15 anos), bem como na colheita final (19 anos), com a quantificação das perdas de volume e da qualidade da madeira em função dos danos físicos, divididos em dois padrões: anelamentos ou janelamentos. Essas perdas foram avaliadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avaliação econômica; Danos florestais; Qualidade da madeira; Sapajus nigritus.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56574

EXPOSIÇÃO OCUPACIONAL AO CALOR NA EXPLORAÇÃO FLORESTAL: REGIME DE PAUSAS DA NORMA BRASILEIRA VERSUS REGIME NATURAL
Provedor de dados: 193
Autores: Nascimento, Kauê Augusto Oliveira; Emmert, Fabiano; Robert, Renato César Gonçalves.
O trabalho em exploração de madeira é considerado um dos mais desgastantes e perigosos, sendo agravado quando em florestas com denso sub-bosque e em condições térmicas ambientais desfavoráveis. O anexo 3 da Norma Regulamentadora nº 15 regulamenta os limites de tolerância e o regime de pausas na exposição ao calor laboral. Este estudo teve como objetivo comparar o regime de pausas da norma com o regime natural na exploração florestal. Foram coletadas as temperaturas em Índice de Bulbo Úmido Termômetro de Globo (IBUTG) e pausas naturais (%/hora). As temperaturas IBUTG mostraram razoável ajuste binomial, ao passo que as pausas naturais demonstraram dinâmicas diferentes ao longo da jornada e forte influência da interrupção mecânica. As pausas naturais foram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dinâmica do trabalho; IBUTG; Manejo florestal.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56341

COMPARAÇÃO DE MÉTODOS E PROCESSOS DE AMOSTRAGEM PARA INVENTÁRIO EM FLORESTA OMBRÓFILA MISTA
Provedor de dados: 193
Autores: Sydow, Julia Diogo; Sanquetta, Carlos Roberto; Corte, Ana Paula Dalla; Sanquetta, Mateus Niroh Inoue; Figueiredo Filho, Afonso.
Inventários florestais são indispensáveis para avaliar quantitativa e qualitativamente os recursos existentes em determinada propri­edade ou região. Diferentes métodos e processos aplicados aos inventários repercutem em estimativas com maior ou menor pre­cisão. O objetivo deste estudo foi comparar as dimensões de uni­dades amostrais, sua distribuição na população e intensidades amostrais na estimativa da densidade, área basal e volume por hectare em um fragmento de Floresta Ombrófila Mista no Sul do estado do Paraná. Foram analisadas 28 configurações de amostra­gem, as quais foram avaliadas por meio dos respectivos erros de amostragem relativos em uma área submetida ao censo e compa­radas a partir do erro real relativo. Foram testadas duas frações de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manejo Florestal Amostragem; Araucária; Censo florestal Inventário Florestal.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/50761

DINÂMICA E FRAGMENTAÇÃO FLORESTAL NA SUB-BACIA DO MÉDIO IGUAÇU (PR) NO PERÍODO DE 2000 A 2015
Provedor de dados: 193
Autores: Santos, Renan; Alvarenga de Mattos Landim, Isabela; Dalla Corte, Ana Paula; Sanquetta, Carlos Roberto.
O objetivo deste trabalho foi avaliar a dinâmica e o grau de fragmentação florestal na sub-bacia do Médio Iguaçu, Paraná, no período de 2000 a 2015. Para tanto, foram utilizadas 4 imagens dos satélites Landsat 7 (2000) e 4 imagens do satélite Landsat 8 (2015), sendo estas submetidas aos procedimentos de georreferenciamento, segmentação e classificação orientada ao objeto, a fim de gerar arquivos vetoriais com as classes de interesse (Florestas Nativas e Não Florestas). A classe floresta foi classificada em 6 classes de tamanho, considerando apenas os fragmentos maiores do que 1 ha, o que foi utilizado como base para a análise de fragmentação. Analisando o período 2000-2015, foi possível identificar que as áreas de florestas naturais apresentaram uma...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manejo Florestal; Sensoriamento Remoto Floresta; Métricas de paisagem; Sensoriamento remoto.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55342

AVALIAÇÃO DE PLANTAS DE Cordia americana EM VIVEIRO UTILIZANDO CARACTERES MORFOLÓGICOS
Provedor de dados: 193
Autores: Trautenmüller, Jonathan William; Borella, Juliane; Minatti, Myrcia; Costa Júnior, Sergio; Woycikievicz, Antônio Pedro Fragoso; Balbinot, Rafaelo; Sanquetta, Carlos Roberto.
A Cordia americana (Linnaeus) Gottshling &amp; J.E. Mill é utilizada para recuperação da áreas degradadas e mata ciliares, o que torna importante conhecer o padrão das plantas produzidas em viveiros. Assim, o presente estudo tem como objetivo predizer o índice de qualidade Dickson em plantas de Cordia americana em diferentes condições de arranjos. O ensaio foi realizado em ambiente protegido sob o delineamento em blocos ao acaso, sendo testados dois tamanhos (90 e 170 cm³) de recipientes e duas densidades, o que totalizou em quatro combinações. Posteriormente, foram avaliados os seguintes parâmetros morfológicos: altura da planta, diâmetro do coleto, fitomassa de folha, caule e raiz, área foliar e índice de qualidade Dickson. O crescimento das plantas foi...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silvicultura; Produção de mudas; Espécies nativas Adensamento de plantas; Área foliar; Guajuvira; Índice de Dickson.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55512

MODELAGEM DA ALTURA DE  Pinus caribaea var. hondurensis  EM DIFERENTES ESPAÇAMENTOS
Provedor de dados: 193
Autores: Cerqueira, Clebson Lima; Môra, Rômulo; Corrêa Lenzi, Italo Luiz; Drescher, Ronaldo; Lima, Edberto Moura; Lisboa, Gerson Dos Santos; De Jesus França, Luciano Cavalcante.
Apesar do Pinus ser um gênero nativo do hemisfério norte, sua introdução nas regiões equatoriais ocorre gradativamente desde as últimas décadas, demonstrando sua capacidade de adaptabilidade e rusticidade. Devido sua importância comercial, se faz necessário o estudo de modelos para estimativa de variáveis dendrométricas. Dessa forma, este trabalho teve como objetivo ajustar e avaliar modelos tradicionais de relação hipsométrica e verificar o efeito de dois espaçamentos (2,5 m x 2,5 m e 2,0 m x 2,5 m) no ajuste das equações sobre um povoamento de Pinus caribaea var. hondurensis no município de Vilhena, Rondônia. A partir das variáveis dendrométricas de 405 árvores mensuradas, ajustou-se seis modelos estatísticos lineares e não lineares de relação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manejo Florestal; Modelagem da Altura; Modelos Estatísticos Inventário florestal; Modelagem florestal; Relação hipsométrica; Teste de identidade.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56012

FUNGOS ASSOCIADOS À MANCHA FOLIAR EM Eucalyptus benthamii Maiden et Cambage NA REGIÃO SUL DO BRASIL
Provedor de dados: 193
Autores: Soares, Izabele Domingues; Auer, Celso Garcia; Santos, Álvaro Figueredo dos; Tambarussi, Evandro Vagner; Rezende, Eduardo Henrique; Coelho, Thiare Aparecida do Valle; Duin, Izabela Moura.
Um dos fatores mais importantes que influenciam no sucesso de plantios florestais é a fitossanidade dos mesmos. Doenças foliares causadas por fungos têm sido frequentemente constatadas em plantios de eucalipto em diversas regiões do Brasil. O objetivo deste trabalho foi avaliar os sintomas e identificar os fungos causadores de mancha foliar em testes de procedência e progênies de Eucalyptus benthamii em três locais na região sul do Brasil. A avaliação foi realizada em São Mateus do Sul (PR), Mafra (SC) e Porto União (SC) aos 10, 16 e 27 meses de idade dos plantios. Foi verificada a frequência e os sintomas dos fungos que ocasionaram a doença. Os gêneros Cylindrocladium e Pestalotiopsis foram constatados em todas as avaliações nos três locais de estudo. Por...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silvicultura; Patologia Florestal Calonectria; Cylindrocladium; Doenças foliares.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/54469

ASPECTOS DA QUALIDADE DO TRABALHO RELACIONADOS À EXPLORAÇÃO FLORESTAL NA AMAZÔNIA CENTRAL
Provedor de dados: 193
Autores: Nascimento, Kauê Augusto Oliveira; Emmert, Fabiano; Robert, Renato Cesar Gonçalves.
A baixa qualidade das operações é apontada como a principal causa da insustentabilidade ecológica do manejo florestal. Este trabalho teve como objetivo a quantificação e a análise de variáveis de qualidade no corte florestal: engate de árvores, altura de toco e árvores ocas. A área de estudo localiza-se no município de Itapiranga, Amazonas, onde a coleta de dados consistiu em 39 horas do corte florestal. Em média três árvores por jornada (12%) engataram no momento de corte por falta de perícia. A altura média dos tocos foi de 26 cm, com volume médio de 0,09 m³ por árvore (2,9%) em forma de tocos. Foi encontrada, em média, 19,8% de árvores ocas por jornada, com tempo perdido de deslocamento por jornada de uma hora e 12 minutos, sendo equivalente a 12,9 m³...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Árvores ocas; Corte; Engate; Toco.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/56342

ESTIMATIVA DA ALTURA E DO VOLUME EM POVOAMENTOS JOVENS DE RESTAURAÇÃO FLORESTAL EM RONDÔNIA
Provedor de dados: 193
Autores: Sanquetta, Carlos Roberto; Sanquetta, Mateus Niroh Inoue; Bastos, Alexis; Queiroz, Alexandre; Dalla Corte, Ana Paula.
Modelos hipsométricos e volumétricos são ferramentas úteis para monitorar o desenvolvimento de plantios de restauração florestal. O objetivo deste trabalho foi desenvolver equações hipsométricas e volumétricas para povoamentos jovens de restauração florestal em Rondônia. Neste estudo, foram ajustadas equações de estimativa de altura total (ht) e volume total com casca (v) em função do diâmetro à altura do peito. Os dados foram coletados em 20 árvores mensuradas e cubadas em povoamentos mistos jovens de restauração, situados nos municípios de Itapuã do Oeste e Cujubim, ao norte do estado de Rondônia, e cinco modelos de regressão hipsométricos e volumétricos foram testados. Além disso, foi analisada a utilização de um fator de forma médio nas estimativas de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manejo Florestal; Modelagem Cubagem; Plantios jovens; Quantificação volumétrica.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/54124

POTENCIAL DENDROENERGÉTICO DOS DIFERENTES COMPARTIMENTOS DE  Acacia mearnsii CULTIVADA NO  ESTADO DO RIO GRANDE DO SUL
Provedor de dados: 193
Autores: da Silva, Dimas Agostinho; Behling, Alexandre; Sanquetta, Carlos Roberto; Dalla Corte, Ana Paula; Ruza, Marieli Sabrina; Pscheidt, Heloisa; Costa Junior, Sergio.
A utilização da biomassa para conversão em energia tem sido um tema muito abordado na atualidade, devido a importância da geração de energia limpa e renovável. Este estudo teve como objetivo analisar o potencial dendroenergético dos compartimentos da Acacia mearnsii De Wild. sob diferentes idades. Para isso, foi conduzido um estudo em dois povoamentos da espécie no estado do Rio Grande do Sul com idades de 1 a 7 anos. A biomassa foi mensurada por compartimento nas diferentes idades e, após esse processo, foi determinado o poder calorífico superior (PCS) das amostras. O cálculo da produtividade energética foi realizado pela multiplicação das variáveis biomassa e PCS. Mediante a análise de variância, evidenciou-se que existem diferenças significativas para o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manejo florestal; Bioenergia Acácia-negra; Biomassa; Dendroenergia.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55777

INVENTÁRIO DE EMISSÕES DE GÁS DE EFEITO ESTUFA EM EMPRESA DE BASE FLORESTAL
Provedor de dados: 193
Autores: Tosato, Jéssica Priscila; Pelissari, Allan Libanio.
A elaboração do inventário de emissões é o primeiro passo para que uma empresa contribua para a minimização das mudanças climáticas, uma vez que, a partir do diagnóstico obtido pelo inventário, a organização estabelece estratégias e metas para redução e para gestão das emissões de gases efeito estufa (GEE), empenhando-se na solução desse problema. Assim, o objetivo deste estudo foi obter o balanço entre as emissões e o sequestro de GEE pelos plantios de Eucalyptus sp. de uma empresa de base florestal. Para isso, quantificou-se o carbono emitido pelas operações florestais, desde a produção das mudas até o transporte dos toretes para a fábrica, bem como o carbono sequestrado pelos plantios florestais, e comparou-se com o ano base de 2015. A metodologia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomassa e Carbono Florestal Balanço de emissões; Operações florestais; Sequestro de GEE.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55069

INCIDÊNCIA DE INSETOS-PRAGA EM SISTEMA AGROFLORESTAL MULTIESTRATA NA REGIÃO CENTRO-SUL DO PARANÁ
Provedor de dados: 193
Autores: do Valle Coelho, Thiare Aparecida; Ukan, Daniele; Schmitz Gomes, Gabriela; Moura Duin, Izabela.
O presente trabalho tem como objetivo identificar e quantificar a incidência de insetos-praga em sistemas agroflorestais, avaliando o grau de danos causados e testando a composição dos sistemas no sentido de minimizar a ocorrência. Os sistemas agroflorestais foram compostos em ninhos, utilizando seis espécies arbóreas: aroeira-pimenteira (Schinus terebinthifolius Raddi), erva-mate (Ilex paraguariensis A. St.-Hil), araçá (Psidium cattleyanum Sabine), pitanga (Eugenia uniflora L.), guabiroba (Campomanesia xanthocarpa (Mart.) O.Berg) e cerejeira (Eugenia involucrata DC.). Assim, foi utilizado o delineamento inteiramente casualizado com quatro tratamentos e oito repetições. Durante noventa dias, foram realizadas sete avaliações, percorrendo todos os ninhos e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silvicultura; Sistema Agroflorestal e Entomologia; Proteção Florestal Agrofloresta; Ilex paraguariensis; Schinus terebinthifolius.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55311

COMPOSIÇÃO FLORÍSTICA E FITOSSOCIOLÓGICA DO MANGUEZAL DA ZONA PORTUÁRIA DE SÃO LUÍS, MARANHÃO, BRASIL
Provedor de dados: 193
Autores: Gonçalves, Alexandre Leão; da Cruz, Vanessa Maria Silva; Campos, Jamerson Rodrigo dos Prazeres; Souza, Deivison Venicio.
Os manguezais estão entre os ecossistemas mais vulneráveis e passíveis de degradação, necessitando-se de estudos que auxiliem na sua compreensão. Assim, o objetivo deste estudo foi descrever as características florísticas e fitossociológicas do manguezal da zona portuária de São Luís – MA. Foram instaladas 20 parcelas medindo 20 m x 20 m (400 m²), por meio de uma amostragem inteiramente aleatória, onde foram quantificados todos os indivíduos arbóreos com diâmetro a 1,3 m maior ou igual a 5 cm, tendo o auxílio de uma fita métrica, ao passo que a altura das árvores foi estimada por meio do método de superposição de ângulos. Os indivíduos inventariados foram agrupados em classes de diâmetro e de altura, e calculou-se os parâmetros fitossociológicos das...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Florestais; Mensuração florestal Estrutura da vegetação; Formação fluviomarinha; Fragilidade ecológica.
Ano: 2017
URL: http://revistas.ufpr.br/biofix/article/view/55789

Analysis of gene expression changes associated with human carcinoma-associated fibroblasts in non-small cell lung carcinoma
Provedor de dados: 48
Autores: Wu,Xiaofen; Ruan,Lei; Yang,Yi; Mei,Qi.
Abstract  Background  This study aimed to investigate the gene expression changes associated with carcinoma-associated fibroblasts (CAFs) involving in non-small cell lung carcinoma (NSCLC).  Methods  We downloaded the GEO series GSE22862, which contained matched gene expression values for 15 CAF and normal fibroblasts samples, and series GSE27289 containing SNP genotyping for four matched NSCLC samples. The differentially expressed genes in CAF samples were identified using the limma package in R. Then we performed gene ontology (GO) and pathway enrichment analysis and protein&amp;#8211;protein interaction (PPI) network construction using the identified DEGs. Moreover, aberrant cell fraction, ploidy, allele-specific copy number, and loss of heterozygosity...
Tipo: Journal article
Palavras-chave: Carcinoma-associated fibroblast; Non-small cell lung carcinoma; Differentially expressed genes; Allele-specific copy number; Functional analysis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100204

Expression of cocaine- and amphetamine-regulated transcript (CART) in hen ovary
Provedor de dados: 48
Autores: Li,Pengfei; Yu,Xuejing; Xie,Jianshan; Yao,Xiaolei; Liu,Wenzhong; Yao,Jianbo; Zhu,Zhiwei; Lyu,Lihua.
Abstract  Background: Cocaine- and amphetamine-regulated transcript (CART), discovered initially by via differential display RT-PCR analysis of brains of rats administered cocaine, is expressed mainly in central nervous system or neuronal origin cells, and is involved in a wide range of behaviors, such as regulation of food intake, energy homeostasis, and reproduction. The hens egg-laying rate mainly depends on the developmental status of follicles, expression of CART have not been identified from hen follicles, the regulatory mechanisms of CART biological activities are still unknown. The objective of this study was to characterize the mRNA expression of CART in hen follicular granulosa cells and determine CART peptide localization and regulatory role...
Tipo: Journal article
Palavras-chave: Hen; Follicles; CART; Theca cell; Granulosa cell.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100211

Proton NMR characterization of intact primary and metastatic melanoma cells in 2D &amp;amp; 3D cultures
Provedor de dados: 48
Autores: Ramachandran,Gokula Krishnan; Yeow,Chen Hua.
Abstract  Objective  To characterize the differences between the primary and metastatic melanoma cell lines grown in 2D cultures and 3D cultures.  Methods  Primary melanoma cells (WM115) and metastatic melanoma cells (WM266) extracted from a single donor was cultured in 2D as well as 3D cultures. These cells were characterized using proton NMR spectrometry, and the qualitative chemical shifts markers were identified and discussed.  Results  In monolayer culture (2D), we observed one qualitative chemical shift marker for primary melanoma cells. In spheroid cultures (3D), we observed nine significant chemical shifts, of which eight markers were specific for primary melanoma spheroids, whereas the other one marker was specific to metastatic melanoma...
Tipo: Journal article
Palavras-chave: Nuclear magnetic resonance; Proton magnetic resonance spectrometry; Melanoma; Cancer.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100208

Musk gland seasonal development and musk secretion are regulated by the testis in muskrat (Ondatra zibethicus)
Provedor de dados: 48
Autores: Zhang,Tianxiang; Peng,Dong; Qi,Lei; Li,Weixuan; Fan,Mengyuan; Shen,Jiachen; Yang,Liangliang; Wang,Yihua; Wang,Wenxia; Hu,Xiaolong; Cai,Ruibo; Zhou,Ran; Wei,Yuting; Zhou,Juntong; Yang,Shuang; Hu,Defu; Liu,Shuqiang.
Abstract  Background  The muskrat is a seasonal breeder. Males secrete musk to attract females during the breeding season. The testosterone binding to the androgen receptor (AR) in musk glands of muskrat may play an important role conducting the musk secretion process.  Methods  The musk gland, testis and blood samples of musk rats are collected in both breeding and non-breeding seasons. Some part of the samples are kept in liquid nitrogen for transcriptome analysis and Western blotting test. Some part of the samples are kept in 70% alcohol for histology experiment, blood samples are kept at &amp;#8722;20 °C for the serum testosterone measurement experiment.  Results  This study demonstrates that the quantity of secreted musk, the volume of the musk...
Tipo: Journal article
Palavras-chave: Muskrat; Musk gland; Testis; AR; Seasonal development.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100201

Neuron-derived CCL2 contributes to microglia activation and neurological decline in hepatic encephalopathy
Provedor de dados: 48
Autores: Zhang,Li; Tan,Jinyun; Jiang,Xiaoping; Qian,Weiwei; Yang,Ting; Sun,Xijun; Chen,Zhaohui; Zhu,Qiwen.
Abstract  Background  CCL2 was up-regulated in neurons and involved in microglia activation and neurological decline in mice suffering from hepatic encephalopathy (HE). However, no data exist concerning the effect of neuron-derived CCL2 on microglia activation in vitro.  Methods  The rats were pretreated with CCL2 receptor inhibitors (INCB or C021, 1 mg/kg/day i.p.) for 3 days prior to thioacetamide (TAA) administration (300 mg/kg/day i.p.) for inducing HE model. At 8 h following the last injection (and every 4 h after), the grade of encephalopathy was assessed. Blood and whole brains were collected at coma for measuring CCL2 and Iba1 expression. In vitro, primary neurons were stimulated with TNF-&amp;#945;, and then the medium were collected for addition...
Tipo: Journal article
Palavras-chave: Hepatic encephalopathy; Neuron; Microglia; Chemokine CC motif ligand 2.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100218

Upregulation of lncRNA BANCR associated with the lymph node metastasis and poor prognosis in colorectal cancer
Provedor de dados: 48
Autores: Shen,Xiaogang; Bai,Yifeng; Luo,Bin; Zhou,Xiaogang.
Abstract  Background  Growing evidence has supported that long non-coding RNAs (lncRNAs) could play vital roles in the development, progression, and prognosis of colorectal cancer (CRC). However, little is known about the clinical significance of BRAF-activated non-coding RNA (BANCR) in CRC. The aim of this study is to explore the clinical value of lncRNA BANCR in CRC patients.  Methods  The expression of lncRNA BANCR was measured in 106 CRC tissues and 65 adjacent normal tissues using the quantitative real-time PCR.  Results  The study showed that lncRNA BANCR was highly expressed in CRC tissues compared with adjacent normal tissues (P &lt; 0.001). In addition, high expression of lncRNA BANCR was positively correlated with the lymph node metastasis (P...
Tipo: Journal article
Palavras-chave: LncRNA; BANCR; Colorectal cancer; Lymph node metastasis; Prognosis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100223

Metabotropic glutamate receptor 5 may be involved in macrophage plasticity
Provedor de dados: 48
Autores: Shanshiashvili,Lali; Tsitsilashvili,Elene; Dabrundashvili,Nino; Kalandadze,Irine; Mikeladze,David.
Abstract  Background  Macrophages are a functionally heterogeneous cell population and depending on microenvironments they polarize in two main groups: M1 and M2. Glutamic acid and glutamate receptors may participate in the regulation of macrophage plasticity. To investigate the role of glutamatergic systems in macrophages physiology, we performed the transfection of mGluR5 cDNAs into RAW-264.7 cells.  Results  Comparative analysis of modified (RAW-mGluR5 macrophages) and non-modified macrophages (RAW-macrophages) has shown that the RAW-mGluR5 macrophages absorbed more glutamate than control cells and the amount of intracellular glutamate correlated with the expression of excitatory amino acid transporters -2 (EAAT-2). Besides, our results have shown that...
Tipo: Journal article
Palavras-chave: Macrophages; Metabotropic glutamate receptors; Inflammation; HMGB1; IL-10.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100203

A spleen tyrosine kinase inhibitor attenuates the proliferation and migration of vascular smooth muscle cells
Provedor de dados: 48
Autores: Seo,Hyang&amp;#8209;Hee; Kim,Sang Woo; Lee,Chang Youn; Lim,Kyu Hee; Lee,Jiyun; Choi,Eunhyun; Lim,Soyeon; Lee,Seahyoung; Hwang,Ki&amp;#8209;Chul.
Abstract  Background  Pathologic vascular smooth muscle cell (VSMC) proliferation and migration after vascular injury promotes the development of occlusive vascular disease. Therefore, an effective chemical agent to suppress aberrant proliferation and migration of VSMCs can be a potential therapeutic modality for occlusive vascular disease such as atherosclerosis and restenosis. To find an anti-proliferative chemical agent for VSMCs, we screened an in-house small molecule library, and the selected small molecule was further validated for its anti-proliferative effect on VSMCs using multiple approaches, such as cell proliferation assays, wound healing assays, transwell migration assays, and ex vivo aortic ring assay.  Results  Among 43 initially screened...
Tipo: Journal article
Palavras-chave: Syk kinase inhibitor; BAY61-3606 VSMC; Proliferation; Migration.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100403

Molecular and functional characterization of ferredoxin NADP(H) oxidoreductase from Gracilaria chilensis and its complex with ferredoxin
Provedor de dados: 48
Autores: Vorphal,María Alejandra; Bruna,Carola; Wandersleben,Traudy; Dagnino-Leone,Jorge; Lobos-González,Francisco; Uribe,Elena; Martínez-Oyanedel,José; Bunster,Marta.
Abstract  Backgroud Ferredoxin NADP(H) oxidoreductases (EC 1.18.1.2) (FNR) are flavoenzymes present in photosynthetic organisms; they are relevant for the production of reduced donors to redox reactions, i.e. in photosynthesis, the reduction of NADP+ to NADPH using the electrons provided by Ferredoxin (Fd), a small FeS soluble protein acceptor of electrons from PSI in chloroplasts. In rhodophyta no information about this system has been reported, this work is a contribution to the molecular and functional characterization of FNR from Gracilaria chilensis, also providing a structural analysis of the complex FNR/Fd.  Methods The biochemical and kinetic characterization of FNR was performed from the enzyme purified from phycobilisomes enriched fractions. The...
Tipo: Journal article
Palavras-chave: Ferredoxin NADP+ reductase; Ferredoxin; Sequence; Kinetic parameters; Structural features.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100228

Alpinia oxyphylla Miq. extract changes miRNA expression profiles in db-/db- mouse kidney
Provedor de dados: 48
Autores: Du,Guankui; Xiao,Man; Zhang,Xuezi; Wen,Maoyu; Pang,Chi; Jiang,Shangfei; Sang,Shenggang; Xie,Yiqiang.
Abstract  Background A number of dysregulated miRNAs have been identified and are proposed to have significant roles in the pathogenesis of type 2 diabetes mellitus or renal pathology. Alpinia oxyphylla has shown significant anti-inflammatory properties and play an anti-diabetes role. The objective of this study was to detect the alteration of miRNAs underlying the anti-diabetes effects of A. oxyphylla extract (AOE) in a type II diabetic animal model (C57BIKsj db-/db-).  Results Treatment with AOE for 8 weeks led to lower concentrations of blood glucose, urine albumin, and urine creatinine. 17 and 13 miRNAs were statistically identified as differentially regulated in the DB/DB and db-/db- AOE mice, respectively, compared to the untreated db-/db- mice. Of...
Tipo: Journal article
Palavras-chave: MiRNA; Db-/db- mice; Alpinia oxyphylla Miq; Kidney; Diabetic nephropathy.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100206

Does Cimicifuga racemosa have the effects like estrogen on the sublingual gland in ovariectomized rats?
Provedor de dados: 48
Autores: Da,Yun&amp;#8209;Meng; Niu,Kai&amp;#8209;Yu; Liu,Shu&amp;#8209;Ya; Wang,Ke; Wang,Wen&amp;#8209;Juan; Jia,Jing; Qin,Li&amp;#8209;Hua; Bai,Wen&amp;#8209;Pei.
Abstract  Background Cimicifuga racemosa is one of the herbs used for the treatment of climacteric syndrome, and it has been cited as an alternative therapy to estrogen. Apart from hectic fevers, dyspareunia and so on, dry mouth also increase significantly after menopause. It has not yet been reported whether C. racemosa has any impact on the sublingual gland, which may relate to dry mouth. In an attempt to determine this, we have compared the effects of estrogen and C. racemosa on the sublingual gland of ovariectomized rats.  Results  HE staining showed that the acinar cell area had contracted and that the intercellular spaces were broadened in the OVX (ovariectomized rats) group, while treatment with estradiol (E2) and iCR (isopropanolic extract of C....
Tipo: Journal article
Palavras-chave: Estradiol; Cimicifuga racemosa; Sublingual gland; Subcellular structure; Caspase-3.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100209

Knockdown of ubiquitin-specific peptidase 39 inhibited the growth of osteosarcoma cells and induced apoptosis in vitro
Provedor de dados: 48
Autores: Gan,Zhihua; Han,Kun; Lin,Shuchen; Hu,Haiyan; Shen,Zan; Min,Daliu.
Abstract  Background  Ubiquitin specific peptidase 39 (USP39), an essential factor in the assembly of the mature spliceosome complex, has an aberrant expression in several cancer. However, its function and the corresponding mechanism on human osteosarcoma has not been fully explored yet.  Methods  The mRNA and DNA copies of USP39 were increased in osteosarcoma cancer tissues compared with the one in human normal tissues according to datasets from the publicly available Oncomine database. A further western blot analysis also demonstrated an aberrant endogenous expression of USP39 in three different osteosarcoma cells. Then lentivirus-mediated short hairpin RNA (shRNA) was designed to silence USP39 in human osteosarcoma cell line U2OS, which is used to test...
Tipo: Journal article
Palavras-chave: Cell cycle; Migration; Osteosarcoma; Proliferation; USP39.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100210

Selective intra-dinucleotide interactions and periodicities of bases separated by K sites: a new vision and tool for phylogeny analyses
Provedor de dados: 48
Autores: Valenzuela,Carlos Y.
Abstract Direct tests of the random or non-random distribution of nucleotides on genomes have been devised to test the hypothesis of neutral, nearly-neutral or selective evolution. These tests are based on the direct base distribution and are independent of the functional (coding or non-coding) or structural (repeated or unique sequences) properties of the DNA. The first approach described the longitudinal distribution of bases in tandem repeats under the Bose&amp;#8211;Einstein statistics. A huge deviation from randomness was found. A second approach was the study of the base distribution within dinucleotides whose bases were separated by 0, 1, 2&amp;#8230; K nucleotides. Again an enormous difference from the random distribution was found with...
Tipo: Journal article
Palavras-chave: Evolutionary theories; Selective nucleotide interactions; Selective periodicities.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100501

Awareness and current knowledge of breast cancer
Provedor de dados: 48
Autores: Akram,Muhammad; Iqbal,Mehwish; Daniyal,Muhammad; Khan,Asmat Ullah.
Abstract Breast cancer remains a worldwide public health dilemma and is currently the most common tumour in the globe. Awareness of breast cancer, public attentiveness, and advancement in breast imaging has made a positive impact on recognition and screening of breast cancer. Breast cancer is life-threatening disease in females and the leading cause of mortality among women population. For the previous two decades, studies related to the breast cancer has guided to astonishing advancement in our understanding of the breast cancer, resulting in further proficient treatments. Amongst all the malignant diseases, breast cancer is considered as one of the leading cause of death in post menopausal women accounting for 23% of all cancer deaths. It is a global...
Tipo: Journal article
Palavras-chave: Breast cancer; Chemotherapy; Gene therapy; Stem cell therapy.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100504

Programmed cell death 5 transgenic mice attenuates adjuvant induced arthritis by 2 modifying the T lymphocytes balance
Provedor de dados: 48
Autores: Yuan,Feng; Wang,Junfeng; Zhang,Keshi; Li,Zhao; Guan,Zhenpeng.
Abstract  Background Programmed cell death 5 (PDCD5) is an apoptosis-related gene cloned from TF-1 cells whose primary biological functions are to promote apoptosis and immune regulation. The effects and mechanisms exerted by key mediators of arthritic inflammation remain unclear in PDCD5 transgenic (PDCD5 tg) mice.  Results In the current study, PDCD5 tg mice inhibited the progression of adjuvant-induced arthritis, specifically decreasing clinical signs and histological damage, compared with arthritis control mice. Additionally, the ratio of CD4+IFN-&amp;#947;+ cells (Th1) and CD4+IL-17A+ cells (Th17), as well as the mRNA expression of the pro-inflammatory mediators IFN-&amp;#947;, IL-6, IL-17A and TNF-&amp;#945;, were decreased in PDCD5 tg mice, while...
Tipo: Journal article
Palavras-chave: Rheumatoid arthritis; Adjuvant-induced arthritis; Programmed cell death 5; T lymphocytes; Inflammatory cytokines.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100229

TMPYP4 exerted antitumor effects in human cervical cancer cells through activation of p38 mitogen-activated protein kinase
Provedor de dados: 48
Autores: Cheng,Ming&amp;#8209;Jun; Cao,Yun&amp;#8209;Gui.
Abstract  Background  The aim of the present study was to investigate the potential effects of the 5,10,15,20&amp;#8209;tetrakis (1&amp;#8209;meth&amp;#8209; ylpyridinium&amp;#8209;4&amp;#8209;yl) porphyrin (TMPyP4) on the proliferation and apoptosis of human cervical cancer cells and the underlying mechanisms by which TMPyP4 exerted its actions.  Results  After human cervical cancer cells were treated with different doses of TMPyP4, cell viability was determined by 3&amp;#8209;(4,5&amp;#8209;dimethyl&amp;#8209;2&amp;#8209;thiazolyl)&amp;#8209;2,5&amp;#8209;diphenyl&amp;#8209;2&amp;#8209;H&amp;#8209;tetrazolium bromide (MTT) method, the apoptosis was observed by flow cytometry (FCM), and the expression of p38 mitogen&amp;#8209;activated protein kinase...
Tipo: Journal article
Palavras-chave: TMPyP4; P38 MAPK; Human cervical cancer cells; Proliferation; Apoptosis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100217

BRD4 inhibition suppresses cell growth, migration and invasion of salivary adenoid cystic carcinoma
Provedor de dados: 48
Autores: Wang,Limei; Wu,Xiuyin; Wang,Ruolin; Yang,Chengzhe; Li,Zhi; Wang,Cunwei; Zhang,Fenghe; Yang,Pishan.
Abstract  Background: Bromodomain-containing protein 4 (BRD4) inhibition is a new therapeutic strategy for many malignancies. In this study, we aimed to explore the effect of BRD4 inhibition by JQ1 on in vitro cell growth, migration and invasion of salivary adenoid cystic carcinoma (SACC).  Methods: The human normal epithelial cells and SACC cells (ACC-LM and ACC-83) were treated with JQ1 at concentrations of 0, 0.1, 0.5 or 1 &amp;#956;M. Cell Counting Kit-8 (CCK-8) assay was performed to evaluate cell proliferation. Cell apoptosis and cell cycle distribution was evaluated by Flow cytometry. Immunofluorescence staining was used to examine the expression of BRD4 in SACC cells. The quantitative real-time polymerase chain reaction (qRT-PCR) assay and western...
Tipo: Journal article
Palavras-chave: Salivary adenoid cystic carcinoma; BRD4 inhibition; Proliferation; Migration; Epithelial-mesenchymal transition.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100213

miR-22 suppresses tumorigenesis and improves radiosensitivity of breast cancer cells by targeting Sirt1
Provedor de dados: 48
Autores: Zhang,Xia; Li,Yuehua; Wang,Dan; Wei,Xiaoer.
Abstract  Background  miR-22 has been shown to be frequently downregulated and act as a tumor suppressor in multiple cancers including breast cancers. However, the role of miR-22 in regulating the radioresistance of breast cancer cells, as well as its underlying mechanism is still not well understood.  Methods  The expressions of miR-22 and sirt1 at mRNA and protein levels were examined by qRT-PCR and Western Blot. The effects of miR-22 overexpression and sirt1 knockdown on cell viability, apoptosis, radiosensitivity, &amp;#947;-H2AX foci formation were evaluated by CCK-8 assay, flow cytometry, colony formation assay, and &amp;#947;-H2AX foci formation assay, respectively. Luciferase reporter assay and qRT-PCR analysis were performed to confirm the...
Tipo: Journal article
Palavras-chave: MiR-22; Tumorigenesis; Radiosensitivity; Breast cancer; Sirt1.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100220

Tridax procumbens flavonoids: a prospective bioactive compound increased osteoblast differentiation and trabecular bone formation
Provedor de dados: 48
Autores: Mamun,Md. Abdullah Al; Hosen,Mohammad Jakir; Khatun,Amina; Alam,M. Masihul; Al-Bari,Md. Abdul Alim.
Abstract  Background  The Tridax procumbens extracts (TPE) are known for their ethno-medicinal properties to increase osteogenic functioning in mesenchymal stem cells. Recently, we found that the T. procumbens flavonoids (TPF) significantly suppressed the RANKL-induced osteoclasts differentiation and bone resorption. The TPF also promoted osteoblasts differentiation and bone formation demonstrated by increasing bone formation markers in cultured mouse primary osteoblasts. However, the effects of the TPF on in vivo bone formation remain unclear. In this study, we investigated the effects of the TPF on in vivo bone formation, injected the TPF (20 mg/kg) twice a day in the low calcium diet mice and killed them after 21 day. Radiographic and histomorphometric...
Tipo: Journal article
Palavras-chave: Alkaline phosphatase; Bone formation; Osteoblast differentiation; Tridax procumbens flavonoids; Trabecular bone.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100221

A review on plant importance, biotechnological aspects, and cultivation challenges of jojoba plant
Provedor de dados: 48
Autores: Al-Obaidi,Jameel R.; Halabi,Mohammed Farouq; AlKhalifah,Nasser S.; Asanar,Shanavaskhan; Al-Soqeer,Abdulrahman A.; Attia,M. F.
Abstract Jojoba is considered a promising oil crop and is cultivated for diverse purposes in many countries. The jojoba seed produces unique high-quality oil with a wide range of applications such as medical and industrial-related products. The plant also has potential value in combatting desertification and land degradation in dry and semi-dry areas. Although the plant is known for its high-temperature and high-salinity tolerance growth ability, issues such as its male-biased ratio, relatively late flowering and seed production time hamper the cultivation of this plant. The development of efficient biotechnological platforms for better cultivation and an improved production cycle is a necessity for farmers cultivating the plant. In the last 20 years, many...
Tipo: Journal article
Palavras-chave: Simmondsia chinensis; Oil crop; Combat desertification; Desert plants.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100503

S100A8 inhibits PDGF-induced proliferation of airway smooth muscle cells dependent on the receptor for advanced glycation end-products
Provedor de dados: 48
Autores: Xu,Yu&amp;#8209;Dong; Wang,Yu; Yin,Lei&amp;#8209;Miao; Peng,Ling&amp;#8209;Ling; Park,Gyoung&amp;#8209;Hee; Yang,Yong&amp;#8209;Qing.
Abstract  Background  Airway remodeling is a key feature of asthma, characterized by increased proliferation of airway smooth muscle cells (ASMCs). S100A8 is a calcium&amp;#8209;binding protein with a potential to regulate cell proliferation. Here, the effect of exogenous S100A8 protein on the proliferation of ASMCs induced by platelet&amp;#8209;derived growth factor (PDGF) and the underlying molecular mechanism was investigated.  Methods  Rat ASMCs were cultured with or without a neutralizing antibody to the receptor for advanced glycation end&amp;#8209;products (RAGE), a potential receptor for S100A8 protein. Purified recombinant rat S100A8 protein was then added into the cultured cells, and the proliferation of ASMCs induced by PDGF was detected by...
Tipo: Journal article
Palavras-chave: S100A8 Airway smooth muscle cells Cell proliferation The receptor for advanced glycation end&amp;#8209; Products Platelet&amp;#8209; Derived growth factor.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100216

Piceatannol induced apoptosis through up-regulation of microRNA-181a in melanoma cells
Provedor de dados: 48
Autores: Du,Maotao; Zhang,Zhong; Gao,Tao.
Abstract  Background Melanoma took top position among the lethal cancers and, despite there have been some great attempts made to increase the natural life of patients with metastatic disease, long-lasting and complete remissions are few. Piceatannol, owns the similar function as resveratrol, has been defined as an anti-cancer agent playing important role in inhibition of proliferation, migration and metastasis in various cancer. Thus, we aim to investigate the anti-cancer effect and mechanisms of piceatannol in melanoma cells.  Methods Melanoma cell lines WM266-4 and A2058 were treated either with or without piceatannol. Cell viability and cell apoptosis were assessed by using MTT and Annexin V/PI assay, respectively. Cells were transfected with specific...
Tipo: Journal article
Palavras-chave: Piceatannol; Apoptosis; MicroRNA-181-a; Melanoma cells.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100226

BJ-1108, a 6-Amino-2,4,5-trimethylpyridin-3-ol analogue, regulates differentiation of Th1 and Th17 cells to ameliorate experimental autoimmune encephalomyelitis
Provedor de dados: 48
Autores: Kang,Youra; Timilshina,Maheshwor; Nam,Tae-gyu; Jeong,Byeong-Seon; Chang,Jae-Hoon.
Abstract  Background  CD4+ T cells play an important role in the initiation of an immune response by providing help to other cells. Among the helper T subsets, interferon-&amp;#947; (IFN-&amp;#947;)-secreting T helper 1 (Th1) and IL-17-secreting T helper 17 (Th17) cells are indispensable for clearance of intracellular as well as extracellular pathogens. However, Th1 and Th17 cells are also associated with pathogenesis and contribute to the progression of multiple inflammatory conditions and autoimmune diseases.  Results  In the current study, we found that BJ-1108, a 6-aminopyridin-3-ol analogue, significantly inhibited Th1 and Th17 differentiation in vitro in a concentration-dependent manner, with no effect on proliferation or apoptosis of activated T...
Tipo: Journal article
Palavras-chave: BJ-1108; Th1/Th17 cell; Differentiation; EAE.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100202

Uptake of DNA by cancer cells without a transfection reagent
Provedor de dados: 48
Autores: Kong,Yanping; Zhang,Xianbo; Zhao,Yongliang; Xue,Yanfang; Zhang,Ye.
Abstract  Background  Cancer cells exhibit elevated levels of glucose uptake and may obtain pre-formed, diet-derived fatty acids from the bloodstream to boost their rapid growth; they may also use nucleic acid from their microenvironment. The study of processing nucleic acid by cancer cells will help improve the understanding of the metabolism of cancer. DNA is commonly packaged into a viral or lipid particle to be transferred into cells; this process is called transfection in laboratory. Cancer cells are known for having gene mutations and the evolving ability of endocytosis. Their uptake of DNAs might be different from normal cells; they may take in DNAs directly from the environment. In this report, we studied the uptake of DNAs in cancer cells without...
Tipo: Journal article
Palavras-chave: DNA uptake; Cancer cells; Endocytosis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100205

Photosynthesis at the far-red region of the spectrum in Acaryochloris marina
Provedor de dados: 48
Autores: Badshah,Syed Lal; Mabkhot,Yahia; Al&amp;#8211;Showiman,Salim S.
Abstract Acaryochloris marina is an oxygenic cyanobacterium that utilizes far&amp;#8211;red light for photosynthesis. It has an expanded genome, which helps in its adaptability to the environment, where it can survive on low energy photons. Its major light absorbing pigment is chlorophyll d and it has &amp;#945;&amp;#8211;carotene as a major carotenoid. Light harvesting antenna includes the external phycobilin binding proteins, which are hexameric rods made of phycocyanin and allophycocyanins, while the small integral membrane bound chlorophyll binding proteins are also present. There is specific chlorophyll a molecule in both the reaction center of Photosystem I (PSI) and PSII, but majority of the reaction center consists of chlorophyll d. The composition...
Tipo: Journal article
Palavras-chave: Oxygenic photosynthesis; Acaryochloris species; Chlorophyll d; Photosystem; Phycobillisomes; P740.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100212

Synaptic configuration of quadrivalents and their association with the XY bivalent in spermatocytes of Robertsonian heterozygotes of Mus domesticus
Provedor de dados: 48
Autores: Berríos,Soledad; Fernández&amp;#8211;Donoso,Raúl; Ayarza,Eliana.
Abstract  Background The nuclear architecture of meiotic prophase spermatocytes is based on higher&amp;#8211;order patterns of spatial associations among chromosomal domains and consequently is prone to modification by chromosomal rearrangements. We have shown that nuclear architecture is modified in spermatocytes of Robertsonian (Rb) homozygotes of Mus domesticus. In this study we analyse the synaptic configuration of the quadrivalents formed in the meiotic pro&amp;#8211; phase of spermatocytes of mice double heterozygotes for the dependent Rb chromosomes: Rbs 11.16 and 16.17.  Results Electron microscope spreads of 60 pachytene spermatocytes from four animals of Mus domesticus 2n = 38 were studied and their respective quadrivalents analysed in detail....
Tipo: Journal article
Palavras-chave: Quadrivalents; Robertsonian chromosomes; Mouse spermatocytes; Nucleoli; Nuclear architecture.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100405

Rapid culture-based detection of living mycobacteria using microchannel electrical impedance spectroscopy (m-EIS)
Provedor de dados: 48
Autores: Kargupta,Roli; Puttaswamy,Sachidevi; Lee,Aiden J.; Butler,Timothy E.; Li,Zhongyu; Chakraborty,Sounak; Sengupta,Shramik.
Abstract  Background: Multiple techniques exist for detecting Mycobacteria, each having its own advantages and drawbacks. Among them, automated culture-based systems like the BACTEC-MGIT&amp;#8482; are popular because they are inexpensive, reliable and highly accurate. However, they have a relatively long "time-to-detection&amp;#8221; (TTD). Hence, a method that retains the reliability and low-cost of the MGIT system, while reducing TTD would be highly desirable.  Methods: Living bacterial cells possess a membrane potential, on account of which they store charge when subjected to an AC-field. This charge storage (bulk capacitance) can be estimated using impedance measurements at multiple frequencies. An increase in the number of living cells during culture...
Tipo: Journal article
Palavras-chave: Mycobacteria; Tuberculosis; Electrical impedance spectroscopy; BD Bactec MGIT 960; M. bovis BCG; M. smegmatis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100214

MiR-320 inhibits the growth of glioma cells through downregulating PBX3
Provedor de dados: 48
Autores: Pan,Cuicui; Gao,Hua; Zheng,Ni; Gao,Qi; Si,Yuanquan; Zhao,Yueran.
Abstract  Background  MiR-320 is downregulated in multiple cancers, including glioma and acts as tumor suppressor through inhibiting tumor cells proliferation and inducing apoptosis. PBX3 (Pre-B cell leukemia homeobox 3), a putative target gene of miR-320, has been reported to be upregulated in various tumors and promote tumor cell growth through regulating MAKP/ERK pathway. This study aimed to verify whether miR-320 influences glioma cells growth through regulating PBX3.  Methods  Twenty-four human glioma and paired adjacent nontumorous tissues were collected for determination of miR-320 and PBX3 expression using RT-qPCR and western blot assays. Luciferase reporter assay was performed to verify the interaction between miR-320 and its targeting sequence in...
Tipo: Journal article
Palavras-chave: Glioma; Luciferase reporter assay; MiR-320; PBX3.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100224

The comparative mitogenomics and phylogenetics of the two grouse-grasshoppers (Insecta, Orthoptera, Tetrigoidea)
Provedor de dados: 48
Autores: Sun,Yufang; Liu,Dianfeng; Xiao,Bo; Jiang,Guofang.
Abstract  Objective  This study aimed to reveal the mitochondrial genomes (mtgenomes) of Tetrix japonica and Alulatettix yunnanensis, and the phylogenetics of Orthoptera species.  Methods  The mtgenomes of A. yunnanensis and T. japonica were firstly sequenced and assembled through partial sequences amplification, and then the genome organization and gene arrangement were analyzed. Based on nucleotide/amino acid sequences of 13 protein-coding genes and whole mtgenomes, phylogenetic trees were established on 37 Orthoptera species and 5 outgroups, respectively.  Results  Except for a regulation region (A+T rich region), a total of 37 genes were found in mtgenomes of T. japonicaand A. yunnanensis, including 13 protein-coding genes, 2 ribosomal RNA genes, and...
Tipo: Journal article
Palavras-chave: Mitogenome; Orthoptera Tetrigoidea; Phylogenetic.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100219

Neurochemical and behavioral characterization of neuronal glutamate transporter EAAT3 heterozygous mice
Provedor de dados: 48
Autores: González,Luis F.; Henríquez-Belmar,Francisca; Delgado-Acevedo,Claudia; Cisternas-Olmedo,Marisol; Arriagada,Gloria; Sotomayor-Zárate,Ramón; Murphy,Dennis L.; Moya,Pablo R.
Abstract  Background  Obsessive&amp;#8211;compulsive disorder (OCD) is a severe neuropsychiatric condition affecting 1&amp;#8211;3% of the worldwide population. OCD has a strong genetic component, and the SLC1A1 gene that encodes neuronal glutamate transporter EAAT3 is a strong candidate for this disorder. To evaluate the impact of reduced EAAT3 expression in vivo, we studied male EAAT3 heterozygous and wild-type littermate mice using a battery of behavioral paradigms relevant to anxiety (open field test, elevated plus maze) and compulsivity (marble burying), as well as locomotor activity induced by amphetamine. Using high-performance liquid chromatography, we also determined tissue neurotransmitter levels in cortex, striatum and thalamus&amp;#8212;brain...
Tipo: Journal article
Palavras-chave: EAAT3 SLC1A1 Neuronal glutamate transporter Obsessive&amp;#8211; Compulsive disorder.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100225

MicroRNA-98 inhibits the cell proliferation of human hypertrophic scar fibroblasts via targeting Col1A1
Provedor de dados: 48
Autores: Bi,Sheng; Chai,Linlin; Yuan,Xi; Cao,Chuan; Li,Shirong.
Abstract  Background  Hypertrophic scarring (HS) is a severe disease, and results from unusual wound healing. Col1A1 could promote the hypertrophic scar formation, and the expression of Col1A1 in HS tissue was markedly higher than that in the normal. In present study, we aimed to identify miRNAs as post-transcriptional regulators of Col1A1 in HS.  Methods  MicroRNA-98 was selected as the key miRNA comprised in HS. The mRNA levels of miR-98 in HS tissues and the matched normal skin tissues were determined by qRT-PCR. MTT and flow cytometry were used to determine the influence of miR-98 on cell proliferation and apoptosis of HSFBs, respectively. Col1A1 was found to be the target gene of miR-98 using luciferase reporter assay. Luciferase assay was performed...
Tipo: Journal article
Palavras-chave: MiR-98; Col1A1; Apoptosis; Proliferation; HSFBs.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100215

Properties of realgar bioleaching using an extremely acidophilic bacterium and its antitumor mechanism as an anticancer agent
Provedor de dados: 48
Autores: Chen,Peng; Xu,Ruixiang; Yan,Lei; Wu,Zhengrong; Wei,Yan; Zhao,Wenbin; Wang,Xin; Xie,Qinjian; Li,Hongyu.
Abstract Realgar is a naturally occurring arsenic sulfide (or Xionghuang, in Chinese). It contains over 90% tetra-arsenic tetrasulfide (As4S4). Currently, realgar has been confirmed the antitumor activities, both in vitro and in vivo, of realgar extracted using Acidithiobacillus ferrooxidans (A. ferrooxidans). Bioleaching, a new technology to greatly improve the use rate of arsenic extraction from realgar using bacteria, is a novel methodology that addressed a limitation of the traditional method for realgar preparation. The present systematic review reports on the research progress in realgar bioleaching and its antitumor mechanism as an anticancer agent. A total of 93 research articles that report on the biological activity of extracts from realgar using...
Tipo: Journal article
Palavras-chave: A. ferrooxidans; Anticancer effect; Bioleaching; RBS; Realgar.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100502

A simple and rapid identification method for newly emerged porcine Deltacoronavirus with loop-mediated isothermal amplification
Provedor de dados: 48
Autores: Zhang,Fanfan; Ye,Yu; Song,Deping; Guo,Nannan; Peng,Qi; Li,Anqi; Zhou,Xingrong; Chen,Yanjun; Zhang,Min; Huang,Dongyan; Tang,Yuxin.
Abstract  Background  Porcine Deltacoronavirus (PDCoV) is a newly emerged enteropathogenic coronavirus that causes diarrhea and mortality in neonatal piglets. PDCoV has spread to many countries around the world, leading to significant economic losses in the pork industry. Therefore, a rapid and sensitive method for detection of PDCoV in clinical samples is urgently needed.  Results  In this study, we developed a single-tube one-step reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay specific for nucleocapsid gene to diagnose and monitor PDCoV infections. The detection limit of RT-LAMP assay was 1 × 101 copies of PDCoV, which was approximately 100-fold more sensitive than gel-based one-step reverse transcription polymerase chain...
Tipo: Journal article
Palavras-chave: Porcine Deltacoronavirus (PDCoV); RT-LAMP; Rapid diagnosis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100222

Morphological, molecular and FTIR spectroscopic analysis during the differentiation of kidney cells from pluripotent stem cells
Provedor de dados: 48
Autores: Mata-Miranda,Monica Maribel; Vazquez-Zapien,Gustavo Jesus; Rojas-Lopez,Marlon; Sanchez-Monroy,Virginia; Perez-Ishiwara,David Guillermo; Delgado-Macuil,Raul Jacobo.
Abstract  Background  Kidney diseases are a global health problem. Currently, over 2 million people require dialysis or transplant which are associated with high morbidity and mortality; therefore, new researches focused on regenerative medicine have been developed, including the use of stem cells.  Results  In this research, we generate differentiated kidney cells (DKCs) from mouse pluripotent stem cells (mPSCs) analyzing their morphological, genetic, phenotypic, and spectroscopic characteristics along differentiation, highlighting that there are no reports of the use of Fourier transform infrared (FTIR) spectroscopy to characterize the directed differentiation of mPSCs to DKCs. The genetic and protein experiments proved the obtention of DKCs that passed...
Tipo: Journal article
Palavras-chave: Pluripotent stem cells; Differentiated kidney cells; Vibrational spectroscopy; Fourier transform infrared; Principal components analysis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100207

Differential roles for pathogenicity islands SPI-13 and SPI-8 in the interaction of Salmonella Enteritidis and Salmonella Typhi with murine and human macrophages
Provedor de dados: 48
Autores: Espinoza,Rodrigo A.; Silva&amp;#8209;Valenzuela,Cecilia A.; Amaya,Fernando A.; Urrutia,Ítalo M.; Contreras,Inés; Santiviago,Carlos A.
Abstract  Background Salmonella pathogenicity island (SPI)-13 is conserved in many serovars of S. enterica, including S. Enteritidis, S. Typhimurium and S. Gallinarum. However, it is absent in typhoid serovars such as S. Typhi and Paratyphi A, which carry SPI-8 at the same genomic location. Because the interaction with macrophages is a critical step in Salmonella pathogenicity, in this study we investigated the role played by SPI-13 and SPI-8 in the interaction of S. Enteritidis and S. Typhi with cultured murine (RAW264.7) and human (THP-1) macrophages.  Results  Our results showed that SPI-13 was required for internalization of S. Enteritidis in murine but not human macrophages. On the other hand, SPI-8 was not required for the interaction of S. Typhi...
Tipo: Journal article
Palavras-chave: Salmonella; Enteritidis; Typhi; SPI-13; SPI-8; Macrophages; RAW264.7; THP-1.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100402

De novo transcriptome assembly, functional annotation and differential gene expression analysis of juvenile and adult E. fetida, a model oligochaete used in ecotoxicological studies
Provedor de dados: 48
Autores: Thunders,Michelle; Cavanagh,Jo; Li,Yinsheng.
Abstract  Background  Earthworms are sensitive to toxic chemicals present in the soil and so are useful indicator organisms for soil health. Eisenia fetida are commonly used in ecotoxicological studies; therefore the assembly of a baseline transcriptome is important for subsequent analyses exploring the impact of toxin exposure on genome wide gene expression.  Results  This paper reports on the de novo transcriptome assembly of E. fetida using Trinity, a freely available software tool. Trinotate was used to carry out functional annotation of the Trinity generated transcriptome file and the transdecoder generated peptide sequence file along with BLASTX, BLASTP and HMMER searches and were loaded into a Sqlite3 database. To identify differentially expressed...
Tipo: Journal article
Palavras-chave: Earthworm; Trinity; Transcriptome; E. fetida; Ecotoxicology; RNA; Sequence; Gene expression.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100401

Mutations in BRCA1, BRCA2 and other breast and ovarian cancer susceptibility genes in Central and South American populations
Provedor de dados: 48
Autores: Jara,Lilian; Morales,Sebastian; Mayo,Tomas de; Gonzalez&amp;#8211;Hormazabal,Patricio; Carrasco,Valentina; Godoy,Raul.
Abstract Breast cancer (BC) is the most common malignancy among women worldwide. A major advance in the understanding of the genetic etiology of BC was the discovery of BRCA1 and BRCA2 (BRCA1/2) genes, which are considered high-penetrance BC genes. In non-carriers of BRCA1/2 mutations, disease susceptibility may be explained of a small number of mutations in BRCA1/2 and a much higher proportion of mutations in ethnicity-specific moderate- and/or low-penetrance genes. In Central and South American populations, studied have focused on analyzing the distribution and prevalence of BRCA1/2 mutations and other susceptibility genes that are scarce in Latin America as compared to North America, Europe, Australia, and Israel. Thus, the aim of this review is to...
Tipo: Journal article
Palavras-chave: Hereditary and early onset breast cancer; Susceptibility genes; Pathogenic point mutations; Large genomic rearrangements; Ethnic composition.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100505

Meristem culture and subsequent micropropagation of Chilean strawberry (Fragaria chiloensis (L.) Duch.)
Provedor de dados: 48
Autores: Quiroz,Karla A.; Berrios,Miguel; Carrasco,Basilio; Retamales,Jorge B.; Caligari,Peter D. S.; García-Gonzáles,Rolando.
Abstract  Background: Vegetative propagation of Fragaria sp. is traditionally carried out using stolons. This system of propagation, in addition to being slow, can spread plant diseases, particularly serious being viral. In vitro culture of meristems and the establishment of micropropagation protocols are important tools for solving these problems. In recent years, considerable effort has been made to develop in vitro propagation of the commercial strawberry in order to produce virus-free plants of high quality. These previous results can serve as the basis for developing in vitro-based propagation technologies in the less studied species Fragaria chiloensis.  Results: In this context, we studied the cultivation of meristems and establishment of a...
Tipo: Journal article
Palavras-chave: Fragaria chiloensis; Meristem culture; Plant growth regulators; Virus elimination; Plant morphogenesis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100404

Role of regenerating gene IA expression on local invasion and survival in nasopharyngeal carcinoma
Provedor de dados: 48
Autores: Xing,Haijie; Chen,Xiangdong; Han,Yaofeng.
Abstract  Background Regenerating gene IA (REGIA) plays an important role in tissue regeneration and tumors prognosis of epithelium origin. However, the role of REGIA in nasopharyngeal carcinoma (NPC) is unclear. This study aims to investigate the expression and function of REG1A in NPC.  Results We have found that there was 63 patients with REGIA positive expression of 155 patients in this study (40.65%). The positive expression rate of REGIA was 30.50, 44.44 and 47.83% in stage T2, T3 and T4 patients, respectively. The REGIA expression was significantly difference in T2 and T4 stage tumors or T2 and T3&amp;#8211;T4 stage. The positive expression rate of REGIA was found to be higher in patients with cervical lymph node persistence than those with cervical...
Tipo: Journal article
Palavras-chave: Nasopharyngeal carcinoma; Regenerating gene IA; Invasion; Survival.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100227

The mating behavior of Leucothyreus marginaticollis Blanchard, 1843 (Coleoptera: Scarabaeidae: Rutelinae)
Provedor de dados: 49
Autores: Ferreira,Kleyton Rezende; Rodrigues,Sérgio Roberto.
Abstract In Brazil, there are several species of the genus Leucothyreus Macleay, 1819 occurring throughout the country; however, there are only a few studies describing their biological aspects, times of occurrence, associations of adults and juveniles with native or cropped plants, as well as their mating behavior. Thus, this study aimed to assess the mating behavior of Leucothyreus marginaticollis Blanchard, 1843. The study took place in an experimental area of the State University of Mato Grosso do Sul, in Aquidauana, MS, Brazil. Firstly, we sampled adult insects using light traps, from October to November 2013. Simultaneously, we registered the flight period in the field. Afterward, in the laboratory, males and females were separated and then combined...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical communication; Eating habit; Geniatini; Scarabaeoidea; White grubs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400205

Freshwater mollusks and environmental assessment of Guandu River, Rio de Janeiro, Brazil
Provedor de dados: 49
Autores: Miyahira,Igor Christo; Carneiro,Jéssica Beck; Gonçalves,Isabela Cristina Brito; Lacerda,Luiz Eduardo Macedo de; Oliveira,Jaqueline Lopes de; Vasconcelos,Mariana Castro de; Santos,Sonia Barbosa dos.
Abstract The Guandu River Basin is extremely important to state of Rio de Janeiro, as a water supplier of several municipalities. However, the malacological knowledge and environmental status is not well known to this basin. The aim of this paper is to present an inventory of freshwater mollusks, as well as an environmental assessment through a Rapid Assessment Protocol, of ten sampling sites at Guandu River basin in six municipalities (Piraí, Paracambi, Japeri, Seropédica, Queimados and Nova Iguaçu). Thirteen species of molusks were found, eight native (Pomacea maculata, Biomphalaria tenagophila, Gundlachia ticaga, Gundlachia radiata, Omalonyx matheroni, Diplodon ellipticus, Anodontites trapesialis and Eupera bahiensis) and five exotics (Melanoides...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gastropoda; Bivalvia; Mollusca; Exotic species; RAP.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300305

Common Vampire Bat (Desmodus rotundus) feeding on Lowland Tapir (Tapirus terrestris) in an Atlantic Forest remnant in southeastern Brazil
Provedor de dados: 49
Autores: Gnocchi,Ariana Pignaton; Srbek-Araujo,Ana Carolina.
Abstract There are few studies on the diet of Common Vampire Bat (Desmodus rotundus), despite its wide geographic distribution. The species is considered exclusively hematophagous, and medium and large-sized mammals are their main prey. In this study we report evidences of Common Vampire Bat feeding on Lowland Tapir (Tapirus terrestris) in a protected area located in the north of the state of Espírito Santo, southeastern Brazil, from camera trap records. The bat tried to access the Lowland Tapir by the posterior dorsolateral side of the body, and used the mean stratum of the vegetation as a point of support and observation between the consecutive offensives on the prey. In the same reserve, there were also two events of bat offensives on domesticated ox...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Camera trap; Chiroptera; Hematophagy; Micro predator; Sooretama Biological Reserve.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300501

Re-discovering jaguar in remaining coastal Atlantic Forest in southeastern Brazil by non-invasive DNA analysis
Provedor de dados: 49
Autores: Souza,Andiara Silos Moraes de Castro; Saranholi,Bruno Henrique; Crawshaw Jr.,Peter Gransden; Paviolo,Agustin Javier; Rampim,Lilian Elaine; Sartorello,Leonardo; Galetti Jr.,Pedro Manoel.
Abstract Jaguar populations have been declining in Brazil mostly due to habitat loss and fragmentation, conflict with humans, poaching and reduction of prey. This is dramatically true in the Atlantic Forest, where occurrence of this large felid is now restricted to very few remaining areas. We used a non-invasive DNA analysis to search through felid scats collected in the Santa Virginia Unit (SVU) of the Serra do Mar State Park, to test for the potential presence of jaguar there. Our results indicated at least three individuals (two females and one male) inside SVU, thus confirming at least temporary presence of this top predator in this important protected area. It is now crucial to intensify studies in that area and surroundings, to evaluate the status...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Panthera onca; Fecal DNA; Santa Virginia Unit; Serra do Mar State Park.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200501

Bioprospection and characterization of the amylolytic activity by filamentous fungi from Brazilian Atlantic Forest
Provedor de dados: 49
Autores: Almeida,Paula Zaghetto de; Pereira,Marita Gimenez; Carvalho,Caio Cesar de; Heinen,Paulo Ricardo; Ziotti,Luciana Sobrani; Messias,Josana Maria; Jorge,João Atilio; Polizeli,Maria de Lourdes Teixeira de Moraes.
Abstract Filamentous fungi are widely diverse and ubiquitous organisms. Such biodiversity is barely known, making room for a great potential still to be discovered, especially in tropical environments - which are favorable to growth and species variety. Filamentous fungi are extensively applied to the production of industrial enzymes, such as the amylases. This class of enzymes acts in the hydrolysis of starch to glucose or maltooligosaccharides. In this work twenty-five filamentous fungi were isolated from samples of decomposing material collected in the Brazilian Atlantic Forest. The two best amylase producers were identified as Aspergillus brasiliensis and Rhizopus oryzae. Both are mesophilic, they grow well in organic nitrogen-rich media produce great...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amylase; Filamentous fungi; Aspergillus brasiliensis; Rhizopus oryzae; Glucoamylase; Bioprospection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300204

Amphibians found in the Amazonian Savanna of the Rio Curiaú Environmental Protection Area in Amapá, Brazil
Provedor de dados: 49
Autores: Lima,Janaina Reis Ferreira; Lima,Jucivaldo Dias; Lima,Soraia Dias; Silva,Raullyan Borja Lima; Andrade,Gilda Vasconcellos de.
Abstract Amphibian research has grown steadily in recent years in the Amazon region, especially in the Brazilian states of Amazonas, Pará, Rondônia, and Amapá, and neighboring areas of the Guiana Shield. Even so, few data are available for the Amazonian savannas of Brazil. To contribute to the understanding of the diversity of the amphibians of these savannas, we surveyed 15 temporary ponds, six located in open areas, seven on the edge of savanna forest, and two within the forest, in the savanna of the Rio Curiaú Environmental Protection Area (EPA) in Macapá, in the state of Amapá, northern Brazil. Sampling occurred from May 2013 to August 2014 during periods when the ponds contained water. Amphibians were sampled through visual and auditory surveys...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibians; Amazonian; Amapá; Savanna; Savanna forest; Species list.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200301

Communities and occurrences of Squamata reptiles in different vegetation types of the Serra de São José, Minas Gerais, Brazil
Provedor de dados: 49
Autores: Rios,Celso Henrique Varela; Novelli,Iara Alves; Hudson,Alexandre de Assis; Cozendey,Pilar; Lima,Lúcio Campos; Sousa,Bernadete Maria de.
Abstract The objective of the present study was to learn which species of Squamata reptiles occur in Protected Area São José, in Tiradentes, Minas Gerais, Brazil. Between November 2009 and December 2010 reptiles were captured. In total 157 specimens were recorded of 29 species, 16 snakes, 12 lizards and one amphisbaena. Among the snakes, Dipsadidae showed the greatest richness, with a total of nine species. The group of snakes had the highest number of species present in the community, but 79% of sampled specimens were lizards, Enyalius bilineatus being the most abundant species, with 21% of occurrence. The area with the highest richness was the Cerradão. The lower abundance was found in the Gallery Forest area (n=14), but it was the vegetation type with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxocenosis; Squamata; Campo das Vertentes; Inventory; Neotropical region.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100303

Fishes from the Jaru Biological Reserve, Machado River drainage, Madeira River basin, Rondônia State, northern Brazil
Provedor de dados: 49
Autores: Costa,Igor David; Ohara,Willian Massaharu; Almeida,Missilene.
Abstract: This work assessed freshwater fishes collected at 12 stations located along the Tarumã River, middle Machado River, Madeira River basin. The fieldwork took place in May and September 2015 during the high and low water seasons, respectively. We gathered 1,482 specimens representing seven orders, 30 families, 54 genera and 74 species using seine, gill, and hand nets. The family Characidae was the most representative, exhibiting the highest number of species captured. The species with the greatest abundance were Hemigrammus vorderwinkleri, Hyphessobrycon bentosi, Hemigrammus cf. bellottii, Bryconella pallidifrons, and Apistogramma resticulosa. Two species that remained unidentified are probably a new species. This study represents the third fish...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Freshwater; Conservation; Ichthyofauna; Inventory.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100307

Helminth parasites of Phyllodactylidae and Gekkonidae lizards in a Caatinga ecological station, northeastern Brazil
Provedor de dados: 49
Autores: Lima,Vandeberg F.; Brito,Samuel V.; Araujo Filho,João A.; Teles,Diêgo A.; Ribeiro,Samuel C.; Teixeira,Adonias A. M.; Pereira,Antonio M. A.; Almeida,Waltécio O.
Abstract We investigated the parasites of five lizard species belonging to Phyllodactylidae (Phyllopezus pollicaris and Gymnodactylus geckoides) and Gekkonidae (Hemidactylus agrius, Lygodactylus klugei and Hemidactylus brasilianus) families in a semiarid region of Brazil. Six nematode species were identified: Parapharyngodon alvarengai and Spauligodon oxkutzcabiensis (Pharyngodonidae), Physaloptera lutzi (Physalopteridae), Skrjabinelazia intermedia (Seuratidae), Trichospirura sp. (Rhabdochonidae) and Piratuba sp. (Onchocercidae), and a cestode species, Oochoristica sp. (Linstowiidae). The most prevalent species were Spauligodon oxkutzcabiensis, which infected P. pollicaris (75%), and Parapharyngodon alvarengai, which infected G. geckoides (29%). South...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Squamata; Nematoda; Cestoda; Geckos; Semiarid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400501

Expanding the knowledge about the occurrence of anurans in the highest amphibian diversity area of Atlantic Forest: Parque Estadual da Serra do Mar, São Paulo, Brazil
Provedor de dados: 49
Autores: Silva,Fernando Rodrigues da; Lyra,Mariana Lúcio; Haddad,Célio Fernando Baptista; Rossa-Feres,Denise de Cerqueira.
Abstract The vegetation cover in the Atlantic Forest has been converted to human use or degraded by human activities, which declined the vegetation to 16% of its original extent. Although several protected areas have been created in this Neotropical biome over the past decades, our knowledge of the amphibian species within these areas is still far from adequate. Here, we present lists of anuran species from three different areas of Parque Estadual da Serra do Mar: núcleos Curucutu, Santa Virgínia and São Sebastião. To survey anuran species, we visited six sampling units (two ponds, two streams and two trails inside forest fragments) in each locality. Samplings were accomplished from December 2014 to February 2015, December 2015 to February 2016 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibians; Biodiversity; Conservation; Hotspots; Species list.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200305

Occurrence of leucism in Eira barbara (Carnivora, Mustelidae) in Brazil
Provedor de dados: 49
Autores: Talamoni,Sonia; Viana,Pedro Igor Macario; Costa,Claudia Guimarães; Palú,Lauro; Oliveira,Raphaela Barcelos; Pessôa,Leila Maria.
Abstract The occurrence of anomalous coloration (albinism, leucism and melanism) in mammals is a rare phenomenon in nature, but this phenomenon has been reported for several species of mammals. In this study, we report on the occurrence of leucism in Eira barbara by examining three road-killed individuals and two sightings of live animals in Reserva Particular do Patrimônio Natural Santuário do Caraça, southeastern Brazil. In addition, we examined tayra specimens housed in mammal collections from Brazil and USA. The animals found dead and those sighted had a whitish yellow fur on the body and head, resulting in lighter coloration than the coloring pattern commonly observed in tayras. Despite these lighter color pattern, the specimens showed parts of soft...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leucism; Fur coloration; Tayra; Serra do Caraça.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300205

New records of fruit trees as host for Neosilba species (Diptera, Lonchaeidae) in southeast Brazil
Provedor de dados: 49
Autores: Gisloti,Laura Jane; Uchoa,Manoel A.; Prado,Angelo.
Abstract Fruits of thirty-five cultivated native plant species (19 orders and 12 families) were sampled in farms of fruit production from two municipalities of São Paulo state, Brazil (January 2010 to March 2012) to evaluate species diversity of Neosilba flies. Thirty-one species of plants were the host for Neosilba species while four were not infested. Some aspects of the biology and patterns of species diversity, abundance, infestation rates, puparias viability and the interactions among species of frugivorous flies and their host plants were quantified. Seven species of Neosilba were reared: Neosilba bella Strikis &amp; Prado (4 hosts), Neosilba certa (Walker) (4 hosts), Neosilba glaberrima (Wiedemann) (5 hosts), Neosilba inesperata Strikis &amp; Prado...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hosts; Lance Flies; Lonchaeid; Natural history.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100203

Aquatic oligochaeta (Annelida: Clitellata) in extractive reserve Lake Cuniã, Western Brazilian Amazon
Provedor de dados: 49
Autores: Gomes,Diego Ferreira; Sanches,Nathalie Aparecida Oliveira; Sahm,Lucas Henrique; Gorni,Guilherme Rossi.
Abstract Oligochaeta is one of the most common and abundant taxon in continental aquatic fauna. However, knowledge of their distribution in Brazilian ecosystems is still incomplete and fragmented. Thus, the aim of this study was to develop an inventory of aquatic oligochaetes in the Extractive Reserve of Lake Cuniã in the State of Rondônia, Brazil. Collections of data were performed during the dry (August 2015) and rainy seasons (February 2016). The sediment samples were collected near the lakeside region using the kick sampling method and a kick-net sampler (mesh size of 0.25mm). This paper provides a catalog with 12 taxon from a total of 383 specimens, distributed into two families: Naididae (95.08%) and Opistocystidae (4.92%). The Pristininae subfamily...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Aquatic macroinvertebrates; Amazon region; Microdrili.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100305

Spotlight on Plasmodium falciparum evolutionary system in the southeastern Atlantic forest
Provedor de dados: 49
Autores: Laporta,Gabriel Zorello.
Abstract Malaria elimination is now set to occur in Brazil until 2030. While this achievement is feasible, as it is for other endemic regions worldwide, it is important to recognize resistance of parasites and vectors against anti-malarial interventions. Resistance against drugs and insecticides can lead to discontinuities of malaria transmission, known as residual malaria transmission. Herein, we described a novel phenomenon that is occurring in a residual malaria transmission scenario in the southeastern Atlantic forest. This novel phenomenon does not belong to what is known and therefore we decided to explain it based on an evolutionary perspective. Although it shall not be viewed as a threat to public health, the phenomenon has important aspects that...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Anopheles; Biological Evolution; Malaria; Plasmodium falciparum; Rainforest.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300401

Inventory of mollusks from the estuary of the Paraíba River in northeastern Brazil
Provedor de dados: 49
Autores: Lima,Silvio Felipe Barbosa; Lucena,Rudá Amorim; Santos,Galdênia Menezes; Souza,José Weverton; Christoffersen,Martin Lindsey; Guimarães,Carmen Regina; Oliveira,Geraldo Semer.
Abstract: Coastal ecosystems of northeastern Brazil have important biodiversity with regard to marine mollusks, which are insufficiently studied. Here we provide an inventory of mollusks from two sites in the estuary of the Paraíba River. Mollusks were collected in 2014 and 2016 on the coast and sandbanks located on the properties of Treze de Maio and Costinha de Santo Antônio. The malacofaunal survey identified 12 families, 20 genera and 21 species of bivalves, 17 families, 19 genera and 20 species of gastropods and one species of cephalopod. Bivalves of the family Veneridae Rafinesque, 1815 were the most representative, with a total of five species. Gastropods of the family Littorinidae Children, 1834 had the greatest species richness. The most abundant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Mollusca; Gastropoda; Bivalvia; Cephalopoda; Tropical coastal ecosystems.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100302

Anurans of the Parque Estadual do Mirador, a remnant of Cerrado in the state of Maranhão, Northeastern Brazil
Provedor de dados: 49
Autores: Andrade,Etielle Barroso de; Weber,Luiz Norberto; Leite,José Roberto de Souza Almeida.
Abstract The Cerrado is one of the most threatened biomes in Brazil. It is estimated that much of its original vegetation has been replaced by some type of human use. This is quite worrying, mainly in the northern part where the number of wildlife inventories is insufficient and creates the false impression of low diversity in the region. The Parque Estadual do Mirador-PEM, located in the south-central region of the state of Maranhão, presents vegetation typical of the Cerrado biome and corresponds to one of 46 priority areas for conservation in the state. Herein, we describe the species richness and composition of the anurofauna from the PEM and analyze the influence of different types of vegetation in its formation. Our inventory was conducted from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inventory; Amphibia; Anura; Conservation unit; Species richness.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400306

Odonates from Bodoquena Plateau: checklist and information about endangered species
Provedor de dados: 49
Autores: Koroiva,Ricardo; Rodrigues,Marciel Elio; Valente-Neto,Francisco; Roque,Fábio de Oliveira.
Abstract Here we provide an updated checklist of the odonates from Bodoquena Plateau, Mato Grosso do Sul state, Brazil. We registered 111 species from the region. The families with the highest number of species were Libellulidae (50 species), Coenagrionidae (43 species) and Gomphidae (12 species). 35 species are registered in the IUCN Red List species, four being Data Deficient, 29 of Least Concern and two species being in the threatened category. Phyllogomphoides suspectus Belle, 1994 (Odonata: Gomphidae) was registered for the first time in the state.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dragonfly; Damselfly; Inventory; Cerrado; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300301

Composition and diversity of mosquitoes (Diptera: Culicidae) in urban parks in the South region of the city of São Paulo, Brazil
Provedor de dados: 49
Autores: Carvalho,Gabriela Cristina de; Ceretti-Junior,Walter; Barrio-Nuevo,Karolina Morales; Wilk-da-Silva,Ramon; Christe,Rafael Oliveira; Paula,Marcia Bicudo de; Vendrami,Daniel Pagotto; Multini,Laura Cristina; Evangelista,Eduardo; Camargo,Amanda Alves; Souza,Laura Freitas; Wilke,André Barretto Bruno; Medeiros-Sousa,Antonio Ralph; Marrelli,Mauro Toledo.
Abstract Many parks in the city of São Paulo contain remnants of Atlantic Forest. Of the 30 municipal parks in the South of the city, we investigated two in this study (Santo Dias Park and Shangrilá Park) in order to survey their mosquito fauna and investigate the presence of potential bioindicators of environmental conditions and vectors of human pathogens. Mosquitoes were collected monthly between March 2011 and February 2012 using aspirators, Shannon and CDC traps for adult mosquitoes and larval dippers and suction samplers for immature forms. Sampling effort was evaluated by plotting a species accumulation curve, and total richness was estimated using the first-order jackknife. To compare the diversity between the two parks Shannon and Simpson...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Mosquitoes; Composition; Urban parks.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200304

Preliminary dragonfly (Odonata) species list from the Pampa biome in Rio Grande do Sul, Brazil, with ecological notes for 19 new records for the State
Provedor de dados: 49
Autores: Renner,Samuel; Périco,Eduardo; Ely,Gerson Júnior; Sahlén,Göran.
Abstract An inventory of Odonata was carried out in the southern half of the state of Rio Grande do Sul, Brazil, in the Pampa biome. Originally, this biogeographical region was covered mostly by open fields and grassland, with sections of higher vegetation surrounding water bodies and rocky hills. Today the landscape is fragmented due to agricultural activities, mainly cattle farming, rice crops and forest plantations. Our survey was conducted in three municipalities from this region, between March 2015 and April 2016. Aiming at a general overview of the species composition, our sampling sites were selected on a wide basis, including lakes, bogs, temporary water bodies, small streams and river sections. Eighty two species of Odonata were collected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthropogenic threats; Ecology; Grassland; Neotropics; Southern fields.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400305

The community of Diptera (Insecta) colonizing axils of Alocasia macrorrhizos (L.) G.Don (Araceae), with records of Aedes aegypti (L.) and Aedes albopictus (Skuse) in urban areas of Manaus, Amazonas
Provedor de dados: 49
Autores: Ferreira-Keppler,Ruth Leila; Neiss,Ulisses Gaspar; Torreias,Sharlene Roberta da Silva; Campos,Claudimir Menezes.
Abstract Alocasia macrorrhizos (L.) G.Don grows and proliferates in shaded areas in several forest fragments in urban zones. The adult plant has axils that accumulate rain water (phytotelmata) and serve as breeding sites for several families of aquatic insects. The objective of this study was to determine the composition of the entomofauna associated with water accumulations in axils of A. macrorrhizos in urban areas of Manaus, Brazil. Individuals of A. macrorrhizos were sampled in five forest fragments, between April/2005 and March/2007 in urban areas of Manaus, totaling 184 sampling units. A manual suction hose was used for the removal of entomofauna. A total of 1,941 immatures of Diptera were collected representing the following families: Culicidae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Culicidae; Forest fragments; Mosquitoes; Phytotelmata; Vectors.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300201

Blattaria from Museu de La Plata, Argentina: New records for Blaberus affinis Jurberg, Albuquerque, Rebordões, Gonçalves &amp;amp; Felippe, 1977 and Blaberus scutatus Saussure &amp;amp; Zehntner, 1894 (Blaberidae, Blaberinae)
Provedor de dados: 49
Autores: Lopes,Sonia Maria; Assumpção,Mariana.
Abstract The habitus of the males of seven species of Blaberus that belong to the Blattaria collection of the La Plata Museum from Argentina (of which two are new occurrences for the country) are illustrated and are classified into the appropriate groups. Information on their collection sites, synonyms and updated geographic distribution is also provided. In total, 27 Blaberus specimens were studied and will be returned to the collection of the Entomology from the Museu de La Plata, Buenos Aires, Argentina.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Collection; La Plata Museum; Blattaria; New records.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300207

Distribution of the assemblage of phlebotomine sandflies (Diptera: Psychodidae) along an environmental gradient
Provedor de dados: 49
Autores: Antonini,Yasmine; Fernandes,G. Wilson; Barata,Ricardo Andrade.
Abstract The geographical distribution of leishmaniasis has undoubtedly expanded, and is now being reported to be in areas that were previously non-endemic. This study therefore aimed to investigate whether there is any variation in the structure and in the composition of phlebotomine communities along an environmental gradient - from a mesic to a xeric environment, across different climatic periods (rainy and dry seasons). Furthermore, we test whether there were differences in sex ratio of sand flies between wet and dry environments. A total of 535 specimens of sand flies belonging to 18 species were recorded. Richness, abundance, and composition of species were significatively higher in the xeric environment (semidecidual Forest) compared to the mesic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Species composition; Ecology; Leishmaniasis; Atlantic Forest; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200202

The genus Chamaecrista Moench in a fragment of the Ecological Station Raso da Catarina, Bahia, Brazil
Provedor de dados: 49
Autores: Correia,Cláudia Letícia de Souza Barros; Conceição,Adilva de Souza.
Abstract Chamaecrista has a Pantropical distribution, with some occurrences in Australia and temperate areas, and includes about 330 species, of which 266 occur in the Americas. The genus is represented in Brazil by 256 species, of which 97 are cited for the northeast Region. The Ecological Station Raso da Catarina (ESRC) is one of the largest areas of protected Caatinga and occupies about 105,282.00 ha., delimited by the coordinates 09°39’0.30” to 09°50’98.2” S and 38°26’57.5” to 38°29’32.6” W. The floristic survey of Chamaecrista in the ESRC included analysis of specimens collected from March 2010 and October 2011. The analyses were supplemented with dried collections from the following herbaria: ALCB, EAC, HRB, HUEFS and MBM. The genus is represented in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floristics; Taxonomy; Semiarid; Caatinga; Diversity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200302

Population dynamics of the brine shrimp Artemia persimilis Piccinelli &amp;amp; Prosdocimi, 1968 (Crustacea, Anostraca) in a hypersaline lake of the Central Pampa (Argentina)
Provedor de dados: 49
Autores: Vignatti,Alicia M.; Cabrera,Gabriela C.; Echaniz,Santiago A.
Abstract The anostracan Artemia is one of the few organisms that can inhabit hypersaline lakes. In Argentina, this genus is represented by two species: the invasive A. franciscana Kellogg, 1906 and the autochthonous A. persimilis Piccinelli &amp; Prosdocimi, 1968, the latter being the only one recorded in the province of La Pampa. Some of the biological aspects of A. persimilis are known based on laboratory studies, and data on its ecology in natural conditions are scarce. The aim of this work is to present information on the density, biomass, and population structure of A. persimilis in relation to environmental variables in Utracán, a hypersaline lake of the semiarid Central Pampa of Argentina. Water and zooplankton samples were taken monthly from May...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Artemia persimilis; Hypersaline lakes; Pampa Argentina.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300503

Phanerogamic flora and vegetation of Itacolomi State Park, Minas Gerais, Brazil
Provedor de dados: 49
Autores: Messias,Maria Cristina T. Braga; Sousa,Hildeberto Caldas de; Scalon,Viviane Renata; Roschel,Miriam B.; Cândido,Elisa Silva; Fujaco,Maria Augusta G.
Abstract Located in the municipalities of Ouro Preto and Mariana, in the Quadrilátero Ferrífero (QF) of Minas Gerais, the Itacolomi State Park (ISP) shelters more than 7,000 ha of remnants of Atlantic Forest and campos rupestres. The QF region has high biodiversity and is being highly impacted, mainly by mining activities. Aiming to organize the available floristic information and to support related research, this study presents the list of phanerogamic species of the ISP and the major vegetation types. This survey was carried out from October/1992 to July/2006, by monthly field trips. Besides authors´ personal collections, other records were assembled from herbarium databank. A total of 1623 taxons belonging to 122 families were listed. The families with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian flora; Campos rupestres; Iron Quadrangle flora; Montane forests; Rock outcrop flora; Neotropics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100306

Morphological characterization of fruit, seeds and seedlings of white-seal (Chrysophyllum rufum Mart. -Sapotaceae)
Provedor de dados: 49
Autores: Lima,Liliane Ferreira; Lima,Renata Gabriela Vila Nova de; Ferreira,Angélica Cândida; Almeida Jr.,Eduardo Bezerra de; Zickel,Carmen Silvia.
Abstract Chrysophyllum is the second largest genus of Sapotaceae, with 81 species distributed in the neotropics. Little data are found in the literature regarding the morphology of seedlings and the early development of this genus. This study aims to morphologically characterize the fruit, seeds and seedlings of Chrysophyllum rufum Mart. Fruits were collected from individuals present in two fragments of the Atlantic Forest, Pernambuco. A sample of 100 seeds and 100 fruits was randomly selected to obtain the morphological data. The seeds were sown in plastic trays in a greenhouse. The fruits are bacoid, obovoid and globose with one or two functional seeds per fruit. The seeds are obovate, with the shape of the hilum ranging from elliptical transverse to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphological description; Germination; Propagules; Atlantic Rainforest.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400201

Echinodermata associated to rhodoliths from Seixas Beach, State of Paraíba, Northeast Brazil
Provedor de dados: 49
Autores: Prata,Jessica; Costa,Dimitri Araujo; Manso,Cynthia Lara de Castro; Crispim,Maria Cristina; Christoffersen,Martin Lindsey.
Abstract This study presents the species of echinoderms found inside rhodolith branches from Seixas Beach, State of Paraíba, Brazil, during one year of rhodolith sampling. A total of 64 specimens were analyzed and identified into 12 species, belonging to 11 genera, eight families and three classes. Brief taxonomic descriptions, figures and ecological notes for recorded species are provided. Ophiuroidea and Holothuroidea were the most representative taxa. Biogenic structures are an important habitat for young specimens and some small species of Echinodermata. Some species complete their life cycle in these structures, while others spend part of their life in these substrates and may also migrate to other habitats. The work complements the knowledge of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Echinoderms; Inventory; Brazilian coast.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300304

The vascular flora and vegetation of Queimada Grande Island, São Paulo State, southeastern Brazil
Provedor de dados: 49
Autores: Kurtz,Bruno Coutinho; Souza,Vinicius Castro; Magalhães,Adriana Melo; Paula-Souza,Juliana de; Duarte,Alexandre Romariz; Joaquim-Jr,Gilberto Oliveira.
Abstract Studies of the vegetation on islands off the coast of southeastern Brazil are still very scarce, despite their importance for assessing, managing, and conserving insular biodiversity. We present here a list of the vascular flora of Queimada Grande Island (QGI; 24°29′10″ S, 46°40′30″ W, 57 ha, 33.2 km from the coast) in southeastern Brazil and describe its phytophysiognomies. The island is covered mainly by Atlantic Forest (Dense Ombrophilous Forest), as well as with rock outcrop and anthropogenic vegetation with herbaceous-shrub phytophysiognomies. QGI showed relatively low species richness (S = 125) when compared to other Brazilian coastal islands. Herbaceous (52) and climbing species (31) predominated on QGI. The richest families were Fabaceae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Biodiversity conservation; Coastal islands; Dispersal syndromes; Invasive species; Protected areas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400302

Freshwater mussels from South America: state of the art of Unionida, specially Rhipidodontini
Provedor de dados: 49
Autores: Miyahira,Igor Christo; Santos,Sonia Barbosa dos; Mansur,Maria Cristina Dreher.
Abstract Unionida is the most diverse clade of freshwater bivalves. Among the groups occurring in South America, one with the highest number of species is Rhipidodontini (Hyriidae, Unionida, Paleoheterodonta, Bivalvia). However several issues remains on taxonomy and systematic of this group, leading to problems on species identification, description, as also as a limiting factor to other type of studies (e.g., ecology, conservation,…). In this paper is presented a synthesis of available knowledge about Diplodon Spix in Wagner, 1827 and Rhipidodonta Mörch, 1853 in South America, as a first step in order to a better understating of Rhipidodontini. The evaluation of different authors exposes the little agreement between them that resulted in a sort of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diplodon; Rhipidodonta; Hyriidae; Bivalvia; Freshwater bivalve.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400601

Museum collections indicate bird defaunation in a biodiversity hotspot
Provedor de dados: 49
Autores: Cavarzere,Vagner; Silveira,Luis Fabio; Tonetti,Vinicius Rodrigues; Develey,Pedro; Ubaid,Flávio Kulaif; Regalado,Luciano Bonatti; Figueiredo,Luiz Fernando de Andrade.
Abstract Ipanema National Forest, southeastern Brazil, once contained 340 bird species. Forest cover suffered for centuries from log exploitation and, as a result, most of the remaining forests are now an impoverished subset of the original vegetation. We show how the bird community changed over time by comparing historical and recent records. Currently, 228 species can be recorded, for a compilation of 410 species, of which 359 are documented. Some 89 forest species with historical records failed to be detected in recent surveys. Of the 72 Atlantic Forest or Cerrado endemic species, no more than 29 (40%) are still found. The bird community changed from one which used to be related to coastline rain forests to another, which relates more to drier...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Cerrado; Hierarchical cluster analysis; Multivariate analysis; Semideciduous forests.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400203

Morphological variation of Philodryas patagoniensis (Girard, 1858) (Serpentes, Dipsadidae) from Brazil, based on the study of pholidosis, coloration and morphometric features
Provedor de dados: 49
Autores: Gouveia,Rafaella Vallim; Novelli,Iara Alves; Vieira,Fabiano Matos; Sousa,Bernadete Maria de.
Abstract The current study aimed to verify the relationship between the patterns of coloration, the morphometrical features and pholidosis of specimens of Philodryas patagoniensis from Brazil, with the sexual dimorphism of this species. We studied specimens of P. patagoniensis deposited in several herpetological collections from Brazil. A total of 355 specimens were analyzed, of these 145 were males (87 adults and 58 juveniles) and 210 were females (134 adults and 76 juveniles). Adult specimens exhibit sexual dimorphism in snout-vent length, tail length, head length, number of ventral shields, and number of subcaudal shields. The analysis of variance showed that the adult females are significantly longer than adult males, both at snout-vent length and tail...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphology; Sexual variability; Philodryadini; Brazilian snakes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100205

Selective advantage conferred by resemblance of aposematic mimics to venomous model
Provedor de dados: 49
Autores: França,Frederico Gustavo Rodrigues; Braz,Vívian da Silva; Araújo,Alexandre Fernandes Bamberg de.
Abstract Mimicry is an excellent example of how natural selection can act on color, morphology, and behavior of species. Herein we assess predation rates on coral snake mimics in Central Brazil, a region with many mimics but only a single model, to answer the following questions: (i) Do predators avoid attacking coral snake mimics? (ii) Does the degree to which mimics resemble their venomous model affect the frequency of predator attacks? (iii) Do predators attack different body regions in mimics with different color patterns? Our experiment was conducted in the Chapada dos Veadeiros National Park, in the municipality of Alto Paraíso de Goiás, state of Goiás, Brazil. To evaluate predation rates on the different mimic patterns, we made 2,400 clay snake...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mimicry; Coral snake; Central Brazil; Predation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300206

Survey of fish species from plateau streams of the Miranda River Basin in the Upper Paraguay River Region, Brazil
Provedor de dados: 49
Autores: Ferreira,Fabiane Silva; Duarte,Gabriela Serra do Vale; Severo-Neto,Francisco; Froehlich,Otávio; Súarez,Yzel Rondon.
Abstract The objective of this study was to provide a comprehensive list of the fish fauna of headwater streams of the Miranda River in the Upper Paraguay River Basin. Our primary data set was constructed from sampling of fish using a rectangular sieve, trawl, and gill nets from 2004 to 2015. Our secondary data were derived from published reports conducted in the Miranda River Basin, in addition to taxonomic and distribution data from other studies conducted in the basin. All data were compiled, which in the end encompassed a period from 1999 to 2015. The datasets yielded a total of 143 species, 104 from the primary data (72.7%) and 39 from the secondary data (27.3%). Species were distributed among seven orders and 30 families were found in the Miranda...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Species List; Pantanal; Streams ichthyofauna; Plateau; Paraguay basin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300302

Drosophilidae (Insecta, Diptera) in the state of Pará (Brazil)
Provedor de dados: 49
Autores: Santa-Brígida,Rosângela; Schmitz,Hermes José; Martins,Marlúcia Bonifácio.
Abstract This list contains information on the Drosophilidae that occur in the Brazilian state of Pará, Amazon biome, and an analysis of the current knowledge of Drosophilidae based on museum material and literature records. This list includes a detailed account of the material deposited in the entomological collections of the Museu Paraense Emílio Goeldi and Museu de Zoologia da Universidade de São Paulo, up to 2015. In total, 122 species of Drosophilidae were registered, including 27 new records for the state of Pará and 22 are new records for the Amazon; for instance, the genera Diathoneura and Rhinoleucophenga, and three new records for Brazil, (Drosophila fasciola, Diathoneura flavolineata and Drosophila neochracea). The state of Pará is the third...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Species composition; Amazon; Diathoneura; Rhinoleucophenga.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100204

Ichthyofauna of the “Cachoeira de São Roberto” and fishes of lower Preto River, upper Paraná River basin, Brazil
Provedor de dados: 49
Autores: Santos,Ana Cláudia; Gonçalves,Carla Cristina; Carvalho,Fernando Rogério.
Abstract Rheophilic environments typically houses fish species with specific ecological requirements. Thus, the suppression of these environments can lead to damaging impacts to local and regional fauna. In this work the ichthyofauna of the “Cachoeira de São Roberto” was inventoried, with a historical review of fish collected in the lower Preto River basin. The sampling sites included two reaches (named R1 and R2): R1 in the “Cachoeira de São Roberto” and R2 refers to two km upstream. The fishes were sampled bimonthly during one year (April 2013 to February 2014) using small and dip nets. Voucher specimens were catalogued in the Fish Collection of “Departamento de Zoologia e Botânica do Instituto de Biociências, Letras e Ciências Exatas, Universidade...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Rheophilic environment; Small Hydroelectric Plants; Threatened species.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100301

Diversity of ants and mites in the diet of the Brazilian frog Chiasmocleis leucosticta (Anura: Microhylidae)
Provedor de dados: 49
Autores: Lopes,Mariana S.; Bovendorp,Ricardo S.; Moraes,Gilberto José de; Percequillo,Alexandre Reis; Bertoluci,Jaime.
Abstract We describe here the diet of the microhylid frog Chiasmocleis leucosticta based on the stomach contents of 72 individuals (47 males and 25 females) collected in pitfall traps at the Reserva Florestal de Morro Grande, state of São Paulo, southeastern Brazil. We identified 1,981 food items distributed in 13 prey categories of arthropods, mainly ants, mites and collembolans. Formicidae was the most abundant and frequent prey category, including 16 genera from seven subfamilies, and data on ant availability in the habitat suggest that C. leucosticta selects ants actively. The second main prey category was Acari, predominantly represented by mites of the suborder Oribatida. This is the first work identifying mites to the family level in the diet of a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acari; Anuran; Atlantic Rainforest; Food habits; Formicidae; Myrmecophagy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300202

Identification key for fishes from coastal streams of the Atlantic forest of southeastern Brazil
Provedor de dados: 49
Autores: Gonçalves,Cristina da Silva; Carvalho,Fernando Rogério; Pérez-Mayorga,María Angélica; Oliveira,Isadora Francesconi de.
Abstract In recent decades, current knowledge about fish from Neotropical streams has greatly increased, but is still deficient. Here we present an identification key for fishes from coastal freshwater streams from a large conservation area of Atlantic rainforest of southeastern Brazil, including 39 species. Considering that most of these species (61.2%) are endemic to the coastal streams, this identification key will be useful not only for the species recognition of the sampled area, but also for the surrounding coastal region.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxonomy; Endemic and endangered fishes; Neotropical streams; Juréia-Itatins Ecological Station.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400801

Composition of the ichthyofauna in Brazilian semiarid reservoirs
Provedor de dados: 49
Autores: Costa,Silvia Yasmin Lustosa; Barbosa,José Etham de Lucena; Viana,Leandro Gomes; Ramos,Telton Pedro Anselmo.
Abstract The scale of impact that the São Francisco River transposition project will have on the drainage basins ichthyofauna is still unclear, however, changes in the fish community diversity and abundance is probable. Surveys and registries of the fish fauna within key systems of the catchment basins are priority actions for the conservation of the aquatic diversity. This study conducted a taxonomic survey of the Epitácio Pessoa (Boqueirão municipality) and Argemiro de Figueiredo (Itatuba municipality), reservoirs ichthyofauna, both belonging to the Paraíba do Norte River basin, important socioeconomic and environmental systems for the transposition project. Monthly sampling was carried out between October/2014 to September/2015 in the upstream and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endemism; Paraíba; Basins Transposition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300203

Butterflies of Amazon and Cerrado remnants of Maranhão, Northeast Brazil
Provedor de dados: 49
Autores: Martins,Lucas Pereira; Araujo Junior,Elias da Costa; Martins,Ananda Regina Pereira; Colins,Mairla Santos; Almeida,Gabriela Cristina Fonseca; Azevedo,Gisele Garcia.
Abstract Species inventories are important tools to evaluate biodiversity losses and contribute to the conservation of endangered areas. The Amazon and Cerrado are the largest Brazilian biomes and represent some of the most threatened regions of the country. Due to its location between these biomes, the state of Maranhão, Northeast Brazil, possesses a great variety of habitats and a high local diversity. Nonetheless, few faunistic inventories of diversified groups have been performed in the state. In the specific case of butterflies, a well-known biological indicator, no inventories have been published in the past years. This study aimed to expand the knowledge on the composition of butterflies in Amazon and Cerrado remnants of Maranhão. Butterflies were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tropical forest; Diversity; Lepidoptera; Neotropical region; Savanna.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300303

Live-trapping Ocelots (Leopardus pardalis): traps, baits, injuries, immobilization and costs
Provedor de dados: 49
Autores: Widmer,Cynthia Elisa; Perilli,Miriam Lúcia Lages; Matushima,Eliana Reiko; Azevedo,Fernando Cesar Cascelli.
Abstract The capture of wild animals can provide important information on community structure, population dynamics, home range size, activity patterns, habitat use, denning, social behavior and health status. The objective of this study was to describe the method of capture with details on baits, injuries, non-target captures, anesthesia and costs, to evaluate its success as part of a health evaluation program of ocelots in a Brazilian Atlantic Forest Reserve. From a total of 1,011 trap-night effort in 86 days, we had 68 capture events composed of ocelots (22%, n=15) and non-target species (78%, n = 53). We captured 10 individual ocelots in 15 capture events, corresponding to 5.7 days to capture one ocelot. Capture efficiency was 14.8 ocelots/1,000...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Brazil; Capture cost; Capture efficiency; Capture selectivity; Injury rate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100201

Emergence and establishment of native and non-native species in soils of remnant and converted highland grasslands – southern Brazil
Provedor de dados: 49
Autores: Müller,Helena de Lima; Lopes,Rodrigo Ramos; Hermann,Julia-Maria.
Abstract Native grasslands in the Campos de Cima da Serra, Brazil, are being converted at speed for exotic tree plantations and cropland. The impact of modified and novel soil conditions on the establishment of native grassland species is unknown; establishment of non-native species, deliberately or accidentally introduced, could be favoured. In a common garden composed of fully randomized replicate samples of soils collected from remnant grassland, former cropland and pine plantations, we tested emergence and establishment of five cold-season species: Native low-tussock grass Piptochaetium montevidense (Spreng.) Parodi; native legume Trifolium riograndense Burkart; naturalized low-tussock grass Vulpia bromoides (L.) Gray; low-tussock grass Holcus lanatus...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Seedling emergence; Degraded soil; Native forage species; Invasive species.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100502

Bats (Mammalia, Chiroptera) from the Nísia Floresta National Forest, with new records for the state of Rio Grande do Norte, northeastern Brazil
Provedor de dados: 49
Autores: Barros,Marília A. S.; Morais,Camila Martins Gomes; Figueiredo,Bruna Maria Braga; Moura Júnior,Gilberto Benigno de; Ribeiro,François Fernandes dos Santos; Pessoa,Daniel Marques Almeida; Ito,Fernanda; Bernard,Enrico.
Abstract The state of Rio Grande do Norte is considered a data gap for bat species records in Brazil. The state is also currently target of large economic projects with potential impacts on bats, especially wind farms and mining enterprises. In addition, Rio Grande do Norte has few conservation units in which there is no systematic study on bat fauna. The Nísia Floresta National Forest (NFNF), a federally protected area of 174 hectares, is located in the eastern coast of Rio Grande do Norte and corresponds to one of the last remnants of Atlantic Forest in the state, in its northernmost limits. A bat inventory was conducted in NFNF using mist nets set at ground level, from sunset to sunrise, from December 2011 to December 2012, totaling 25 sampling nights....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Rainforest; Chiropteran inventory; Conservation units; Neotropical biodiversity; Protected areas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200303

Successional stage effect on the availability of tree cavities for cavity-nesting birds in an Atlantic Forest park from the state of São Paulo, Brazil
Provedor de dados: 49
Autores: Katayama,Michele Viana; Zima,Paulo Victor Queijo; Perrella,Daniel Fernandes; Francisco,Mercival Roberto.
Abstract The availability of suitable cavities and substrate for hole construction can limit the populations of birds that rely on tree hollows to reproduce. Several studies have focused on the effects of types of habitats, and types of human disturbances on cavities abundance, but the effect of successional stages in the Atlantic Forest has been poorly addressed. In this study we aimed to compare the availability and biometric characteristics of tree cavities between primary and mid-successional stage sites in an Atlantic Forest area from southeastern Brazil. Based on nest characteristics described in the literature, we inferred if hollows present in secondary sites could harbor the large secondary-nester Atlantic Forest birds, with special attention to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bird conservation; Nesting ecology; Cavity-nesters.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400202

Amphibians of Vassununga State Park, one of the last remnants of semideciduous Atlantic Forest and Cerrado in northeastern São Paulo state, Brazil
Provedor de dados: 49
Autores: Benício,Ronildo Alves; Silva,Fernando Rodrigues da.
Abstract Although São Paulo state has one of the best known amphibian fauna in Brazil, there are still protected areas for which the species composition remains unknown. Here, we present the first species list of anuran amphibians in Vassununga State Park. This area is one of the last remnants of semideciduous Atlantic Forest and Cerrado in the northeastern region of São Paulo state, southeastern Brazil. To survey species, we visited six sites (two ponds, two streams, and two transects) in December, January, and February of 2014-2015 and 2015-2016, totalizing 18 days of field samplings at each site. We recorded 24 anuran species belonging to four families: Bufonidae (2 species), Hylidae (11 species), Leptodactylidae (10 species), and Microhylidae (1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anurans; Biodiversity; Cerrado; Atlantic Forest; Species list; Conservation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100308

Brief history of the Brazilian Platform on Biodiversity and Ecosystem Services/BPBES
Provedor de dados: 49
Autores: Padgurschi,Maíra de Campos Gorgulho; Joly,Carlos A.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100101

Ichthyofauna of Mundaú river basin, Ceará State, Northeastern Brazil
Provedor de dados: 49
Autores: Teixeira,Francisco Keilo; Ramos,Telton Pedro Anselmo; Paiva,Roney Emanuel Costa de; Távora,Marcelo Aguiar; Lima,Sergio Maia Queiroz; Rezende,Carla Ferreira.
Abstract Mundaú river basin is located at Center-North Ceará State and occupies a total area of 2,227 km2, including Estuário do Rio Mundaú Environmental Protection Area. This study aimed to catalog the fishes of this basin. Collections were performed with active and passive gear in 35 sampling sites, between 2012 and 2014, in several habitats (main channels, streams, floodplains, permanent and temporary pools, ponds, and dams). A total of 2,545 specimens were collected, belonging to 55 species distributed in 10 orders, 31 families, and 50 genera; 30 of these are strictly freshwater species, and 25 estuarine-marine species. Three species (Hemigrammus guyanensis Gery, 1995, H. rodwayi Durbin, 1909 and Poecilia sarrafae Bragança &amp; Costa, 2011) represent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intermittent river; Semiarid; Mid-Northeastern ecoregion; Freshwater neotropical fishes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100304

Influence of landscape structure on Euglossini composition in open vegetation environments
Provedor de dados: 49
Autores: Moreira,Eduardo Freitas; Santos,Rafaela Lorena da Silva; Silveira,Maxwell Souza; Boscolo,Danilo; Neves,Edinaldo Luz das; Viana,Blandina Felipe.
Abstract The fauna of Euglossini bees is poorly known in savanna regions, making it difficult to understand how these bees use open vegetation environments. The aim of this study was to evaluate the influence of landscape structure on species abundance and composition of Euglossini bees in naturally heterogeneous savanna landscapes. Nine sites were sampled monthly using six traps with chemical baits. Three aromatic essences (eucalyptol, methyl salicylate and vanillin) were used to attract the Euglossini. Surrounding environmental conditions were measured using three independent variables, calculated in multiple scales: index of local vegetation and two landscape indices (Shannon Diversity and area-weighted shape). We compared the competing hypotheses...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bees; Habitat amount hypothesis; Landscape heterogeneity; Landscape configuration.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100207

Confirmation of the northermost population of the endangered butterfly Heliconius nattereri C. Felder &amp;amp; R. Felder, 1865 (Lepidoptera: Nymphalidae)
Provedor de dados: 49
Autores: Cardoso,Márcio Zikán; Brito,Marcos Roberto; Lion,Marília Bruzzi.
Abstract Heliconius nattereri C. Felder &amp; R. Felder, 1865 is an enigmatic and rarely collected species. Because of severe habitat reduction, the species is currently listed as endangered. We here report the confirmation of a northernmost population. This collection and further observations reported here add two more known localites to the distribution of the species. Two of the three confirmed locations are in protected areas. We worry that the northern population may be at great risk because it is not formally protected. We urge conservation efforts to preserve the local forests where the species is found.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Endangered species; Conservation; Atlantic Forest; Range map.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400502

Length-weight and length-length relationships for rockpool fishes on the Brazilian coast
Provedor de dados: 49
Autores: Machado,Fabiola Seabra; Oliveira,Rory Romero de Sena; Silva,Arianderson Texeira; Giarrizzo,Tommaso.
Abstract Fifty-nine length-weight (LWR) and length-length (LLR) relationships were estimated for 18 fish species, belonging to 10 families. The fish specimens were captured in rockpools of 21 sites along a stretch of 4,900 km of the Brazilian coast, between latitudes 00° and 22°S, in 2012. This study represents the first reference available for five fish species (Gobiesox barbatulus, Bathygobius geminatus, Labrisomus nuchipinnis, Malacoctenus delalandii, Lutjanus alexandrei) in LLR and six (Gobiesox barbatulus, Bathygobius geminatus, Hypleurochilus fissicornis, Omobranchus punctatus, Entomacrodus vomerinus, Diplodus argenteus) in LWR.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Intertidal fish; Tidepool; Allometry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300502

Diet of two syntopic species of Crenuchidae (Ostariophysi: Characiformes) in an Amazonian rocky stream
Provedor de dados: 49
Autores: Fernandes,Suzanne; Leitão,Rafael Pereira; Dary,Eurizângela Pereira; Guerreiro,Ana Isabel Camacho; Zuanon,Jansen; Bührnheim,Cristina Motta.
Abstract This study assessed the diet of two poorly known syntopic fish species of the family Crenuchidae, Characidium aff. declivirostre and Leptocharacidium omospilus, in a Presidente Figueiredo´ rocky stream, Amazonas, Brazil. The stomach contents were analyzed and their Frequency of Occurrence (FO %) and Relative Volume (Vol %) were combined in a Feeding Index (IAi). We examined 20 individuals of C. aff. declivirostre and 23 of L. omospilus. The Morisita-Horn Index was used to estimate the overlap between the diets of these species. Immature insects were the most valuable items consumed by both fish species. The diet of C. aff. declivirostre was mainly composed of larvae and pupae of Chironomidae, while L. omospilus predominantly consumed larvae of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stream fish; Co-existence; Feeding overlap.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100206

Record of morphological deformities in Corydoras aff. longipinnis in two reservoirs under urban influence in Upper Iguaçu and Southern Coastal basins in Paraná State, Brazil
Provedor de dados: 49
Autores: Mise,Fábio Teruo; Tencatt,Luiz; Santos,Bruno Ferreira dos.
Abstract In this work we report on the presence of morphological deformities in Corydoras aff. longipinnis from two reservoirs in Paraná State, Brazil. The frequency of deformities in the fish populations was 11% in Iraí and 10.5% in Capivari reservoirs. Considering that the frequency may be associated with impacts caused by anthropic activities, this information can be used as a metric in management systems and environmental monitoring.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Anthropization; Corydoradinae; Malformations; Neotropical region; Urban reservoirs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100501

Aquatic invertebrates associated with bromeliads in Atlantic Forest fragments
Provedor de dados: 49
Autores: Paula Júnior,Antonio Teixeira de; Rosa,Beatriz Figueiraujo Jabour Vescovi; Alves,Roberto Gama; Divino,Alex Campos.
Abstract: Forest fragments in the state of Minas Gerais contain a large number of Bromeliaceae genera, whose cisterns accumulate water and organic matter, providing shelter and food for a wide range of organisms. However, these fragments often consist only of small patches of vegetation, making the species more vulnerable to the effects of this landscape changes. This study aimed to test the effect of the distance to the edge and of the matrix type on the structure of aquatic invertebrate communities in four morphospecies of bromeliads. Samples were collected in Atlantic Forest fragments adjacent to pasture and planted forest areas, in a region of Serra da Mantiqueira, Brazil. Of the 147 bromeliads investigated, we found 35 taxa, among which the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Edge effect; Phytotelma; Invertebrates; Remaining forest.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100202

Establishment of a cryopreserved biobank for the Culture Collection of Freshwater Microalgae (CCMA-UFSCar), São Paulo, Brazil
Provedor de dados: 49
Autores: Tessarolli,Leticia Piton; Day,John Godfrey; Vieira,Armando Augusto Henriques.
Abstract The Culture Collection of Freshwater Microalgae (CCMA-UFSCar, Coleção de Culturas de Microalgas de Água-Doce), based at the Universidade Federal de São Carlos, plays an important role in underpinning Brazilian microalgal research, providing biological materials, substrates and training personnel for a large proportion of the past and current projects in this area. However, recent efforts to expand the culture catalogue/holdings have reached a ceiling because of the logistical practicality of maintaining actively growing cultures. In order to reduce the costs associated with the maintenance regime of cultures, efforts were initiated on the establishment of a cryopreserved biobank for long term maintenance of cultures, thus minimizing the efforts...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cryopreservation; Freshwater microalgae; Biobank.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200201

Inventory of benthic marine and estuarine algae and Cyanobacteria for Tabasco, México
Provedor de dados: 49
Autores: Mendoza-González,Angela Catalina; Mateo-Cid,Luz Elena; García-López,Deisy Yazmin.
Abstract Studies of benthic marine and estuarine algae as well as Cyanobacteria are in their early stages in the littoral of the state of Tabasco. Sixty seven taxa of seaweeds are currently known from Tabasco. The inventory of these organisms was made based on samples obtained in six localities, three of them in marine and three in estuarine environments. We found 147 species and subspecific taxa with Rhodophyta having the greatest number with 84, followed by Chlorophyta 44, and finally Phaeophyceae 19. In addition, the 26 species of Cyanobacteria collected are recorded for the first time for the coast of Tabasco since there are no previous reports. The presence of 115 species of benthic marine and estuarine algae is reported for the first time for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tabasco; Mexico; New records; Marine; Estuarine; Algae; Cyanobacteria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400303

Fern and lycophyte flora of Acre state, Brazil
Provedor de dados: 49
Autores: Prado,Jefferson; Hirai,Regina Yoshie; Moran,Robbin Craig.
Abstract This paper provides keys, illustrations, short descriptions, and voucher specimen citations for the ferns and lycophytes of Acre, Brazil. We recognize a total of 212 species in 66 genera and 28 families. Of these, the lycophytes are represented by 14 species, 4 genera, and 2 families, and the ferns by 8 varieties, 1 subspecies, 198 species, 62 genera, and 26 families. The total represents an increase of 22 species and two varieties compared to a checklist published in 2009. The six most species-rich genera are Adiantum (21 spp.), Asplenium (14), Selaginella (12), Trichomanes (11), Lindsaea, and Microgramma (9 each). None of the species treated here are endemic to Acre. A new combination is made for Meniscium chrysodioides Fée var. goyazense.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Diversity; Floristics; Pteridophytes; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400304

On the oviposition and egg masses of Conus regius (Neogastropoda: Conidae) from northeastern Brazil
Provedor de dados: 49
Autores: Gonçalves,Pricila Bento; Lima,Silvio Felipe Barbosa; Oliveira,Geraldo Semer Pomponet; Lucena,Rudá Amorim.
Abstract Characteristics of the egg masses of Conus regius Gmelin, 1791 are described and figured for the first time for the coast of Brazil based on a female specimen found in the process of oviposition during the day in the state of Bahia, northeastern Brazil. Two clusters of egg masses were found in the subtidal zone of Itapuã beach attached to rocky substrate in a completely unprotected site. Oviposition likely began at least one day earlier, since the specimen had already affixed an entire egg mass and was ovipositing a second cluster at the time it was found. The egg masses were arranged in short, irregular rows of three to nine closely spaced capsules in parallel and facing the same direction. One egg mass cluster consisted of 34 capsules. Conus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gastropoda; Conoidea; Reproduction; Ootheca; Bahia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400204

Inventory of Ferns and Lycophytes of the RPPN Pedra D'Antas, Pernambuco state, northeastern Brazil
Provedor de dados: 49
Autores: Farias,Rafael; Silva,Ivo; Pereira,Anna Flora; Santiago,Augusto; Barros,Iva.
Abstract The Northeastern Atlantic Forest (NAF) has a historic of intense habitat loss and fragmentation. In this context, knowledge of the species from forest remnants is urgently needed and represents a key tool for future studies and conservation strategies. Here, we present the floristic inventory of ferns and lycophytes from the Private Natural Heritage Reserve - RPPN Pedra D'Antas, located in a NAF area. The study area associated with the RPPN Frei Caneca is the Serra do Urubu, which is a hotspot for the diversity of several biological groups in the NAF. We recorded 74 fern species, distributed in 17 families and 46 genera. The most diverse families were Pteridaceae (17 species), Polypodiaceae (14 spp.), Dryopteridaceae (nine spp.) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Biodiversity; Conservation; Floristic survey; Seedless vascular plants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400301

POPULATION STRUCTURE OF GRENADIER FISH COELORINCHUS CAELORHINCUS IN DEEP WATERS OF THE COLOMBIAN CARIBBEAN COAST
Provedor de dados: 50
Autores: Paramo,Jorge; Motta,Jasney; Hoz,Javier De La.
ABSTRACT The objective of the study is to describe the patterns of spatial distribution and size structure of Coelorinchus caelorhincus in deep-sea waters of Colombian Caribbean. The samples were collected with trawling in depths between 200 and 550 m. Statistically significant differences in the sizes of the sexes were found, indicating sexual dimorphism. The length structure by depth strata showed a size increase with depth for both females and males. The length at sexual maturity in females was 17.238 cm TL. The spatial distribution indicates that in the northeastern area the higher aggregations were off the coast of the Magdalena River, off Santa Marta and Riohacha cities. In the southwestern area the higher aggregations were towards the northern part...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coelorinchus caelorhincus; Spatial distribution; Size structure; Colombian Caribbean.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100153

FIRST RECORD OF BRITTLE-STAR SCHIZOSTELLA BIFURCATA (ECHINODERMATA: OPHIUROIDEA) IN THE COLOMBIAN CARIBBEAN
Provedor de dados: 50
Autores: Manrique-Rodríguez,Nelson; Borrero-Pérez,Giomar H.
ABSTRACT This paper reports Schizostella bifurcata, a member of the family Gorgonocephalidae for the first time in the Colombian Caribbean. This report is based on specimens collected from the continental shelf of Santa Marta bay, where the species was found associated with gorgonians.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ophiuroids; Taxonomy; First record; Continental shelf; Colombian Caribbean.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100205

Producción de (+)-discodermólido por la esponja Discodermia dissoluta bajo sistemas de cultivo fijo y suspendido
Provedor de dados: 50
Autores: Gomez-León,Javier; Lopez-Navarro,Johann; Millanguir,Alicia; Castaño,Jesus David; Zea,Sven.
RESUMEN El macrólido antitumoral (+)-discodermólido, producido por la esponja marina Discodermia dissoluta, tiene promisorios resultados como antitumoral, antimitótico e inmunosupresor. Sin embargo, el suministro sostenible de cualquier molécula necesita mucha investigación de trabajo in situ e in vitro para lograr la optimización y posterior obtención de la molécula de interés. En este estudio se evaluaron dos sistemas de cultivo fijo y suspendido a 15 m de profundidad, en las localidades de Punta de Betín y Nenguange en Santa Marta (Caribe colombiano). En cada caso se registró la supervivencia, el crecimiento y la producción de (+)-discodermólido, encontrando mejores resultados para el crecimiento en el sistema suspendido y una dependencia de la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Discodermia dissoluta; (+)-discodermólido; Fragmentos de esponja; Cultivo de esponjas; Acuicultura.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200153

Geomorfología de los fondos submarinos del Parque Nacional Natural Corales de Profundidad, mar Caribe colombiano
Provedor de dados: 50
Autores: Giraldo,David Fernando Morales; Gutiérrez,Venus Lorena Rocha; Posada,Blanca Oliva Posada.
RESUMEN La cartografía geomorfológica detallada permite entender cómo los procesos ecológicos claves se ven influenciados por el relieve submarino, además sirve para identificar sitios de interés particular donde se desarrollan hábitats bentónicos en áreas tropicales como la del Caribe central. El Parque Nacional Natural Corales de Profundidad fue declarado en 2013 como un área marina protegida en el mar Caribe colombiano. Se encuentra en el terreno tectónico Cinturón Plegado del Sinú, formado por la interacción entre la placa oceánica Caribe y la continental suramericana. Las características geológicas contribuyen a la comprensión del origen de las geoformas de fondo asociadas a diferentes ecosistemas en los que se encuentran corales de profundidad que,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geomorfología submarina; Batimetría multihaz; Mapeo de hábitat; Corales de profundidad; Mar Caribe.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200073

DIATOMEAS ASOCIADAS A MACROALGAS EN PLACAS PERMANENTES DE LA COLECCIÓN DEL PROFESOR GERMÁN BULA MEYER, UNIVERSIDAD DEL MAGDALENA, COLOMBIA
Provedor de dados: 50
Autores: Vidal,Luis Alfonso; Ospino-Acosta,Katya; Linares-Vargas,Katherin; García-Urueña,Rocío.
RESUMEN El Profesor Germán Bula (1947-2002), experto ficólogo marino, como parte de su disciplina colectó muestras de macroalgas en diferentes partes de Colombia, pero, sobre todo, en el Parque Nacional Natural Tayrona. Parte de su interés fue conocer las microalgas asociadas a dichas muestras. Como una contribución al conocimiento de la biodiversidad en Colombia, se hizo una determinación específica de los taxa hallados en 61 placas permanentes elaboradas por Bula, etiquetadas como diatomeas, pero sin identificar, que se encuentran almacenadas en el Centro de Colecciones Biológicas de la Universidad del Magdalena. Igualmente se elaboraron 22 placas permanentes de diatomeas con base en el material fijado de las macroalgas; dicho material está contenido en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germán Bula; Parque Nacional Natural Tayrona; Diatomeas; Colecciones biológicas.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100045

Heteropods (Gastropoda: Pterotracheoidea) identified along a coastal-oceanic transect in the Colombian Pacific
Provedor de dados: 50
Autores: Moreno-Alcántara,María; Giraldo,Alan; Aceves-Medina,Gerardo.
RESUMEN Con el propósito de establecer la composición taxonómica del ensamblaje de heterópodos que habita en el Pacífico colombiano, se analizaron muestras de zooplancton recolectadas en marzo de 2014 a lo largo de un trayecto costa-océano. Se identificaron 12 especies pertenecientes a tres familias y tres géneros. Atlanta lesuerii fue la especie más abundante en el área de estudio. Además, se registran por primera vez a A. frontieri, A. oligogyra, A. inflata y A. plana en el Pacífico sudamericano, así como A. helicinoidea en el Pacífico colombiano. Este trabajo contribuye de manera significativa en el conocimiento de los moluscos heterópodos del Pacífico colombiano.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversidad marina; Moluscos pelágicos; Pterotracheoidea; Zooplancton; Heterópodos.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200175

PRIMER REGISTRO DEL TAMBORIL NARIGÓN (SPHOEROIDES LOBATUS: TETRAODONTIDAE) EN ISLA MALPELO, PACÍFICO COLOMBIANO
Provedor de dados: 50
Autores: Rojas-Vélez,Stephanía; Tavera,José.
RESUMEN De las ocho especies del género Sphoeroides (familia Tetraodontidae) que habitan el Pacífico Oriental Tropical únicamente Sphoeroides lobatus se encuentra distribuida en más de un grupo de islas oceánicas: Galápagos, Revillagigedo e Isla del Coco. El presente trabajo documenta el primer registro del Tamboril Narigón (S. lobatus) en isla Malpelo, Pacífico colombiano.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Islas oceánicas; Pacifico oriental tropical; Botete.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100199

DETECCIÓN DE CAMBIOS DE LA LÍNEA COSTERA AL NORTE DEL DISTRITO DE BUENAVENTURA MEDIANTE EL USO DE SENSORES REMOTOS
Provedor de dados: 50
Autores: Cifuentes-Ossa,María Alejandra; Rosero-Henao,Leidy Viviana; Josephraj-Selvaraj,John.
RESUMEN Este estudio se enfoca en la detección de la magnitud del cambio de la línea costera al norte del Distrito de Buenaventura, en el Pacífico colombiano, durante un periodo de 30 años, en una costa donde la geomorfología incluye playas, acantilados, estuarios, deltas y marismas. Por medio de imágenes satelitales (Landsat MSS, ETM+ y OLI TIRS) se detectaron posiciones históricas de la línea costera, con el fin de identificar los procesos de cambio, en términos de erosión y acreción, desde 1986 hasta 2015. Se realizó un análisis estadístico para encontrar estimaciones de las distancias y tasas de cambio de las líneas costeras, usando la herramienta del Servicio Geológico de los Estados Unidos (USGS por sus siglas en inglés): Digital Shoreline Analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Buenaventura; Pacífico colombiano; Cambios de la línea costera; Erosión; Acreción.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100137

FECUNDIDAD DE SCOMBEROMORUS SIERRA (PERCIFORMES: SCOMBRIDAE) EN EL PACÍFICO COLOMBIANO
Provedor de dados: 50
Autores: Eraso-Ordoñez,Jessica Franeive; Bustos-Montes,Diana Milena; Salas-Castro,Sarith; Girón,Alexander; Rueda,Mario.
RESUMEN Scomberomorus sierra (sierra castilla) es una de las especies más importantes en la pesca artesanal del Pacífico de Colombia. Con el fin de investigar su biología reproductiva, insumo importante para la administración del recurso, se describió el desarrollo gonadal y se estimó la fecundidad parcial y el tamaño promedio de los ovocitos y la talla de madurez. Las muestras provinieron de faenas comerciales en diferentes zonas de pesca. De cada pez se obtuvo la longitud total (LT) y estándar (LS), así como el peso total y gonadal. La fecundidad se estimó combinando el método gravimétrico con análisis de imágenes, usando el software de libre acceso Image J®. Se colectaron 79 peces entre noviembre de 2013 y abril de 2014, con tallas entre 39.0 y 85.0 cm...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Análisis histológico; Tamaño ovocitario; Pesca artesanal; Scombridae; Sierra castilla.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100029

DESARROLLO PRELIMINAR DE UN MODELO HIDRODINÁMICO Y DE TRANSPORTE DE NUTRIENTES PARA LA CIÉNAGA GRANDE DE SANTA MARTA
Provedor de dados: 50
Autores: Carvajalino-Fernández,Marcos Antonio; Lojek,Oliver; Fernandes,Luis; Vivas-Aguas,Lizbeth Janet.
RESUMEN Se desarrolló un modelo numérico acoplado para la simulación hidrodinámica y el transporte de nutrientes/oxígeno dentro del complejo lagunar de la Ciénaga Grande de Santa Marta (Colombia) usando la plataforma de modelación MOHID Water. Los resultados preliminares muestran coherencia con datos de monitoreo dentro de la laguna principal y el canal de La Barra, tanto para el nivel de agua como para las fluctuaciones anuales de salinidad. Sin embargo, se requieren observaciones adicionales dentro del complejo de Pajarales para lograr una correcta representación de la hidrodinámica en todo el sistema lagunar. Debido a la limitada información sobre los coeficientes locales para las ecuaciones de transporte de nutrientes, el modulo de calidad de aguas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modelación numérica; MOHID; Hidrodinámica; Nutrientes; Ciénaga Grande de Santa Marta.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100191

Invasión de un poliqueto nativo en una isla del Pacífico Oriental Tropical
Provedor de dados: 50
Autores: Ramírez-Calero,Sandra; Torres-López,Wilmar A.; Lopez-Molina,Lizeth; López-Dávila,Andrés J.; Londoño-Cruz,Edgardo.
RESUMEN Las fluctuaciones en la dinámica de poblaciones como las explosiones demográficas e invasiones, son relativamente comunes en los ecosistemas, y en ciertos casos pueden afectar la biodiversidad y otra serie de atributos ecológicos. En este artículo, reportamos la aparición y explosión demográfica de Idanthyrsus cf. cretus (Chamberlin, 1919), un poliqueto constructor de arrecifes y describimos algunas de sus características ecológicas (abundancia y cobertura). Este estudio fue llevado a cabo en tres localidades de la Isla Gorgona, ubicada en el Pacífico colombiano. El muestro se realizó de forma aleatoria en los niveles intermareales bajo, medio y alto con el fin de medir la densidad poblacional y la cobertura. La densidad fue medida utilizando...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Explosión demográfica; Ingenieros biológicos; Invasión; Idanthyrsus.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200135

COMPARATIVE ANALYSIS OF TRADITIONAL SOLAR SALTWORKS AND OTHER ECONOMIC ACTIVITIES IN A PORTUGUESE PROTECTED ESTUARY
Provedor de dados: 50
Autores: Sainz-López,Noa.
ABSTRACT This study shows that Traditional Solar Saltworks can be competitive with other land uses in the Nature Reserve of Castro Marim and Vila Real de Santo Antonio Saltmarshes ("Reserva Natural do Sapal de Castro Marim e Vila Real de Santo Antonio", in Portuguese), sited in the estuary of the Guadiana River (SW Iberian Peninsula, Europe); particularly, if they are specialized in extraction of Fleur de Sel (or Flower of Salt), a gourmet variety of sea salt. Artisanal sea salt production based on solar evaporation methods of millennial history in the area is an environmentally sustainable activity in harmony with saltmarsh landscape. Two crystallizers of a 1 ha Traditional Solar Saltworks were monitored during 70 days from June to August 2015 with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protected natural area; Artisanal saltworks; Coastal wetland; Integrated management; Estuary.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100171

NEW RECORDS OF SPONGES OF THE GENERA PETROSIA AND XESTOSPONGIA (DEMOSPONGIAE: HAPLOSCLERIDA: PETROSIIDAE) FROM THE COLOMBIAN CARIBBEAN
Provedor de dados: 50
Autores: Silva,Jaime Andrés; Zed,Sven.
ABSTRACT Sponges (Porifera) are important constituents of littoral habitats in the Caribbean Sea. The knowledge of their biodiversity is fundamental to carry out ecological, managerial and utilitarian research. Their taxonomy is complex, but in the Caribbean in general, and in Colombia in particular, there are important advances. With this work, some sponge species of the genera Petrosia and Xestospongia are recorded and described for the first time from the Colombian Caribbean. Petrosia (Strongylophora) davilai, Xestospongia arenosa, Xestospongia deweerdtae and Xestospongia purpurea are described and illustrated. The number of records of Petrosia and Xestospongia for the Colombian Caribbean are now three and four species, respectively. In all species, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Porifera; Caribbean; Colombia; Taxonomy; New records.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100113

Dinoflagelados epífitos de Thalassia testudinum en dos sistemas costeros del Caribe colombiano
Provedor de dados: 50
Autores: Arbelaez M,Natalia; Mancera Pineda,José Ernesto; Reguera,Beatriz.
RESUMEN Los estudios sobre dinoflagelados epibentónicos potencialmente tóxicos han incrementado en los últimos años debido al aumento en el número de eventos perjudiciales atribuidos a algunas de estas microalgas. Tales eventos constituyen un riesgo para la salud humana y para diversas actividades económicas. Con el objetivo de confirmar la presencia de estos dinoflagelados en el Parque Nacional Natural Tayrona (PNNT), Caribe colombiano, se recolectaron mensualmente muestras del pasto marino Thalassia testudinum entre enero de 2014 y diciembre de 2015 en dos sistemas costeros (bahía y laguna) ubicados en la Bahía de Chengue (11 ° 20' N y 74 ° 07' W). Las hojas del pasto marino se tomaron manualmente, se depositaron en bolsas plásticas y se trasladaron al...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dinoflagelados tóxicos; Caribe colombiano; FANs bentónicas; Pastos marinos.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200009

Análisis del estado trófico y microfitoplancton de la zona costera de la provincia del Guayas, Ecuador
Provedor de dados: 50
Autores: Prado-España,Mónica; Troccoli-Ghinaglia,Luis; Cajas-Flores,Jacqueline.
RESUMEN En el golfo de Guayaquil se concentra la mayor actividad pesquera y acuícola del Ecuador; sin embargo, la carga de nutrientes provenientes de actividades antrópicas, afectaría la calidad del agua y diversidad de recursos pesqueros. Con el propósito de determinar el estado trófico de la zona costera y estuario interior, se recolectaron muestras de agua superficial, para medir temperatura, salinidad, oxígeno disuelto, nutrientes y microfitoplancton. Además, se establecieron relaciones entre las variables hidrográficas mediante un Análisis de Componentes Principales (ACP) y entre éstas con el microfitoplancton a través del Análisis de Redundancia (ADR). Las diferencias en estructura comunitaria se determinaron mediante el Escalamiento Multidimensional...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Golfo de Guayaquil; Estuario; Mesotrófico; Diatomeas; Variables hidrográficas.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200091

Bioerosión por ramoneo en los arrecifes coralinos del Pacífico colombiano: el caso de Diadema mexicanum (Echinoidea: Diadematidae)
Provedor de dados: 50
Autores: Obonaga,Levy D.; Zucconi,Mauro Giovanni; Londoño-Cruz,Edgardo.
RESUMEN Los equinoideos son un componente importante de las comunidades bentónicas y pueden llegar a modificar directamente la distribución y abundancia relativa de algas y corales, y ser un agente importante en el proceso de bioerosión. A pesar de los estudios realizados en el Pacífico colombiano sobre equinoideos, se desconoce la tasa de bioerosión por ramoneo del equinodermo Diadema mexicanum en los arrecifes de la isla Gorgona; considerando las abundancias de este equinoideo y su potencial efecto sobre el ecosistema coralino, en este trabajo se calculó la tasa de bioerosión. Para esto, se efectuaron muestreos aleatorios con cuadrantes de 1 m2 en las tres zonas (Trasarrecife ±1.0 m de profundidad, Planicie ±0.5 m y Frente ±3.0 m en marea baja) del...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioerosión; Pacífico Oriental; Erizo de mar; Arrecife coralino; Isla Gorgona.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200041

Variación espacio temporal del ensamble de larvas de peces coralinos en isla Gorgona, Pacífico colombiano
Provedor de dados: 50
Autores: Calle-Bonilla,Isabel Cristina; López,Alan Giraldo; Cuéllar-Chacón,Andrés.
RESUMEN Se describió la variación espacial y temporal del ensamble de larvas de peces asociados a formaciones coralinas en el sector oriental de isla Gorgona, Pacífico colombiano y se evaluó la relación entre la variación espacial de la abundancia y las condiciones oceanográficas locales, particularmente el campo de circulación superficial instantáneo. Se registró información oceanográfica y biológica en septiembre 2014 y febrero 2015, siguiendo una malla de 16 estaciones clasificadas en tres sectores con base en la distancia a la formación coralina de mayor extensión en el área de estudio, el arrecife coralino de La Azufrada. Se capturaron 1185 larvas de 29 especies de especies de peces asociados a formaciones coralinas. La abundancia, riqueza y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arrecifes de coral; Circulación superficial; Larvas de peces.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200055

Superposición de la dieta del pez león Pterois volitans (Teleostei: Scorpaenidae) con la de peces nativos de nivel trófico similar en Cuba
Provedor de dados: 50
Autores: Pantoja Echevarría,Laura María; Chevalier Monteagudo,Pedro P.; Cabrera Guerra,Delmis; Corrada Wong,Raúl Igor; Cobián Rojas,Dorka; Caballero Aragón,Hansel; García Rodríguez,Alain; Fernández Osoria,Ramón Alexis.
RESUMEN El pez león, originario del Indo Pacífico, ha protagonizado una de las invasiones de peces marinos más rápida de la historia en el Atlántico occidental tropical y subtropical. Sus poblaciones representan una amenaza para los peces nativos de nivel trófico similar en la competencia por los recursos alimentarios. Con la finalidad de comparar sus dietas, se capturaron 899 peces león y 377 peces nativos pertenecientes a las familias Haemulidae, Holocentridae, Serranidae y Lutjanidae en tres localidades de Cuba. Se analizó el contenido de sus estómagos mediante las variables número, frecuencia, volumen y el índice de importancia relativa. La composición general de las dietas fue similar en las tres localidades estudiadas. El pez león y las familias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composición de la dieta; Ecología trófica; Especie invasora.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200115

Primer registro del pez vaca cola amarilla Hypoplectrus chlorurus (Serranidae) en el Caribe continental colombiano
Provedor de dados: 50
Autores: González Corredor,Juan David; Acero P,Arturo; Torres Rodríguez,Javier.
RESUMEN Se registra por primera vez el serránido pez vaca cola amarilla en la costa continental del Caribe colombiano. Un individuo de esta especie fue colectado en enero de 2014 en Bahía Concha en el Parque Nacional Natural Tayrona a 8 m de profundidad.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Primer registro; Hypoplectrus chlorurus; PNN Tayrona; Caribe colombiano.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000200183

The moss flora of Ostrov Geologov (Geologists Island), Maxwell Bay, King George Island, Antarctica
Provedor de dados: 51
Autores: Câmara,Paulo E.A.S; Guedes Costa Silva,Barbara; Carvalho-Silva,Micheline; Knop Henriques,Diego.
Located of the east coast of Fildes Peninsula, South of Ardley Island, at King George Island, Ostrov Geologov (Geologist Islands) is a small island with 0.25 miles long. It only had one plant record published so far. We have conducted extensive fieldwork on the site and provide here a comprehensive checklist and a key for the moss species occurring on the island. Despite its small size, theislandcontains about 35% of all theFildes Peninsula moss flora, six new records were found. The pristine state of the island due to its relative isolation, presence of avian nesting sites and a relatively rich moss flora are strong arguments in favor of protection status for the island.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antarctica; Bryophyta; Fildes Peninsula; Moss.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200004

Caracteres florales y palinológicos en Acanthostyles (Asteraceae, Eupatorieae) y su relación con la polinización
Provedor de dados: 51
Autores: Grossi,Mariana A; Gutiérrez,Diego G; Marquez,Gonzalo J; Luna,María Luján.
La polinización por el viento en la familia Asteraceae se encuentra documentada en unas pocas tribus. Particularmente en Eupatorieae, sólo se ha reportado aparente anemofilia en 10 especies pertenecientes a los géneros Critonia, Decachaeta, Eupatorium, Koanophyllon y Neohintonia, la mayoría de las cuales crece en América del Norte y Central, con sólo dos especies que alcanzan América del sur. El género Acanthostyles incluye una única especie, Acanthostyles buniifolius, la cual se encuentra ampliamente distribuida en el sur de América del Sur. Esta especie presenta características que sugieren un mecanismo de polinización mediado por el viento. Analizamos en detalle algunos caracteres morfológicos y palinológicos relacionados con el síndrome anemófilo. Como...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acanthostyles; Anemofilia; Austroeupatorium; Eupatorieae; América del Sur.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100009

Esporas de Funaria hygrometrica y Entosthodon laxus (Funariaceae, Bryophyta) para la región de Tierra del Fuego, Argentina
Provedor de dados: 51
Autores: Piñeiro,María R.
La familia Funariaceae se halla representada en Tierra del Fuego, por los géneros Entosthodon Schwägr. y Funaria Hedw. Entosthodon con una única especie, E. laxus, y Funaria con dos variedades, F. hygrometrica var. hygrometrica y F. hygrometrica var. fuegiana. Se analizan y describen, en base a material fresco y de herbario, los esporofitos y esporas de las especies citadas, más la variedad de una de ellas. Las observaciones se hicieron con Microscopios Óptico y Electrónico de Barrido. Los esporofitos de ambos géneros presentan cápsulas con distinta forma, color y longitud. En las esporas se observan diferencias en el tamaño y ornamentación de la superficie. Se puede concluir que el estudio de los esporofitos, y en especial el análisis de las esporas,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Tierra del Fuego; Bryophyta; Funariaceae; Esporas; Esporofito; Morfología.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100004

Identification of volatile compounds from three species of Cyathodium (Marchantiophyta: Cyathodiaceae) and Leiosporoceros dussii (Anthocerotophyta: Leiosporocerotaceae) from Panama, and C. foetidissimum from Costa Rica
Provedor de dados: 51
Autores: Salazar Allen,Noris; Santana,Ana Isabel; Gómez,Nélida; Chung C,Clementina; Prashad Gupta,Mahabir.
Cyathodium is a thalloid marchantialean liverwort with five species reported for the Neotropics. Three species that occur in Panama (C. bischlerianum, C. spruceanum, C. cavernarum) and one from Costa Rica (C. foetidissimum) were studied chemically. Female and male plants of the dioecious C. spruceanum were very similar in their chemical composition except for two compounds that were found only in female plants. All samples of C. spruceanum and C. bischlerianum contained, in less than three percent, the sesquiterpenes germacrene D and bicyclogermacrene. The presence of these compounds suggests a close affinity between these two species. Cyathodium bischlerianum contained mainly aromatic monoterpenes with nerolidol as the main compound. Cyathodium cavernarum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Costa Rica; Diterpenes; Hornwort; Neotropical liverworts; Panama; Sesquiterpenes; Skatole.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200016

Morpho-ecological characterization and composition of rocky fields bryophytes in Brazilian Cerrado
Provedor de dados: 51
Autores: Marchi Do Carmo,Dimas; Fernandes Peralta,Denilson.
The aim of this study is to provide information about ecological relations and floristic composition of bryophytes community in Brazilian Cerrado rocky fields in Minas Gerais state. There are few works of bryophyte communities and their relation with this environment for Brazilian Cerrado, besides this, these environments are submitted to several intense treats. For this study nine transects of 50 m with total of 45 plots were randomly sampled in order to analyze the composition and morpho-ecological traits of bryophytes communities. The diversity measures were performed using the PAST and EstimateS software to perform the clustering of the species found between the tree different areas of rocky fields. We found 176 occurrences of 47 bryophytes species in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community composition; Dry environments; Ecology; Liverworts; Mosses; Richness.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200007

Modificaciones anatómicas y químicas en el leño de ejemplares del arbolado de la ciudad de La Plata (Buenos Aires) causadas por Laetiporus sulphureus (Basidiomycota, Polyporales)
Provedor de dados: 51
Autores: Murace,Mónica; Luna,María L; Ciuffani,Maria G. G; Perelló,Analía.
A nivel mundial, Laetiporus sulphureus es un importante patógeno causante de pudriciones castañas en el arbolado urbano. En la ciudad de La Plata, dicho hongo fue hallado en ejemplares de álamo blanco, fresno americano, eucalipto y paraíso gigante. El objetivo del trabajo fue analizar las alteraciones estructurales y químicas ocasionadas por L. sulphureus en el leño de álamo blanco, fresno americano, eucalipto y paraíso gigante con el propósito de dimensionar el riesgo que implica su deterioro para los habitantes, sus bienes y la diversidad arbórea de la ciudad. Los estudios anatómicos fueron realizados con microscopios óptico y electrónico de barrido. Los análisis químicos se llevaron a cabo en muestras de fresno y paraíso, según normas TAPPI. En todos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laetiporus sulphureus; Leño de latifoliadas; Pudrición castaña; Alteraciones químico-anatómicas; Laetiporus sulphureus; Hardwoods; Brown-rot; Chemical-anatomical alterations.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400003

Anatomia foliar del género Smallanthus (Asteraceae, Millerieae)
Provedor de dados: 51
Autores: Vitali,Maira S.
Debido a la gran importancia medicinal y alimentaria que tienen las hojas en especies de Smallanthus, como por ejemplo el mundialmente conocido &amp;#8220;yacón&amp;#8221; (Smallanthus sonchifolius), y que hasta el momento solo se han estudiado cuatro especies de las 23 que componen el género, se analizó aquí la anatomía foliar de todas las especies de Smallanthus. Se presenta también, una tabla de usos y nombres vulgares de las especies de las que se obtuvo tal información. Se realiza una descripción general de la anatomía foliar, incluyendo el pecíolo. Se identificaron tres tipos de tricomas: uno eglandular del tipo cónico simple y dos glandulares (biseriado capitado y biseriado vesiculado subtipo beta). Las especies de Smallanthus no mostraron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asteraceae; Hoja; Tricomas; Canales secretores; Usos.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300006

Fusión, esculturas y ornamentaciones de las piezas de la corola de 17 especies de Papilionoideae
Provedor de dados: 51
Autores: Alemán,María Mercedes; Hoc,Patricia; López Spahr,Diego; Yáñez,Carolina; Gómez,Carlos.
Las flores de la subfamilia Papilionoideae tienen una arquitectura compleja con pétalos elaborados, en los que se ha observado la presencia de aurículas o callosidades, apéndices o espolones que articulan las piezas entre sí y de ornamentaciones principalmente en las alas. En este trabajo se analizó la morfología de las piezas de la corola de 17 especies de Papilionoideae (Leguminosae) nativas de la provincia de Salta. Todas las especies presentaron fusión entre los márgenes inferiores de la quilla que involucraba diferentes tipos de uniones a nivel de las células epidérmicas. Solo algunas de las especies estudiadas presentaron fusión en los márgenes superiores de la quilla. Todas las especies presentaron esculturas en los pétalos que servirían para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biología floral; Esculturas; Leguminosae; Mecanismos de polinización; Ornamentaciones; Pétalos.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400002

Dormición física en Lepechinia floribunda (Lamiaceae): Un arbusto nativo de interés medicinal
Provedor de dados: 51
Autores: Ashworth,Lorena; Camina,Julia; Funes,Guillermo.
Lepechinia floribunda es un arbusto aromático medicinal que tiene múltiples aplicaciones. La baja germinación de sus semillas es el principal rasgo que hasta el momento ha limitado su propagación. El objetivo del presente trabajo fue determinar la presencia de dormición física en semillas de L. floribunda y evaluar la eficiencia de distintos pretratamientos y el tiempo de almacenamiento en romper dicha dormición. Se realizó un experimento de imbibición y otros de germinación con semillas almacenadas por 0, 90, 270 y 1050 días utilizando escarificación térmica (con agua a 100°C) y química (ácido sulfúrico concentrado) como pretratamientos. Las semillas de L. floribunda presentaron dormición física y el tratamiento más efectivo para romper la dormición fue...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Escarificación química; Lamiaceae; Lepechinia floribunda; Dormición; Germinación de semillas; Imbibición.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400006

El Julián cotidiano: docente, investigador, artista&amp;#8230;
Provedor de dados: 51
Autores: Miante Alzogaray,Ana María.
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100015

Three new mosses records from the Andes of northwestern Argentina
Provedor de dados: 51
Autores: Cano,María J; Alonso,Marta.
Two mosses are newly reported for Argentina based on recent collections from Salta province: Aligrimmia peruviana R.S. Williams and Conostomum cleistocarpum Herzog. Hitherto, they were considered endemic to Bolivia and Peru, respectively. In addition, Crossidium squamiferum (Viv.) Jur., a species distributed in Europe, North America, Mexico, Asia, North Africa, and Macaronesia, is here reported for the first time in South America.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aligrimmia; Conostomum; Crossidium; Distribution; Flora; Salta; South America.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200006

Etnobotánica de la alimentación entre los indígenas moqoit actuales de la provincia del Chaco (Argentina) y comparacion con fuentes históricas de los siglos XVIII y XX
Provedor de dados: 51
Autores: Rosso,Cintia N; Scarpa,Gustavo F.
A partir de información genuina registrada a campo, se identifican las plantas empleadas actualmente como alimentos por los indígenas moqoit de la provincia del Chaco (Argentina), así como sus aplicaciones específicas. Se identifican 51 taxones vegetales pertenecientes a 25 familias botánicas, empleadas por los moqoit en 76 preparaciones culinarias y/o formas de consumo. Las especies con mayor cantidad de usos son Bromelia hieronymi (5), Aechmea distichantha, Araujia odorata y Sarcomphalus mistol (4). El 80% de las plantas (41 especies) son nativas del bosque chaqueño e involucran al 82% de los usos. Prevalece el uso de partes vegetales crudas, principalmente frutos. La comparación con lo registrado durante el siglo XVIII por misioneros jesuitas y a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Moqoit; Gran Chaco; Etnobotánica; Plantas alimenticias.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400015

Typii Petropolitanum brasiliensium: A catalog of Brazilian types of bryophyta deposited at Komarov Botanical Institute (Le) in St. Petersburg, Russia
Provedor de dados: 51
Autores: Câmara,Paulo E.A.S; Costa,Denise P; Kurbatova,Lujbov; Afonina,Olga; Carvalho-Silva,Micheline.
The herbarium LE of the Komarov Botanical Institute in Saint Petersburg (former Leningrad), Russia holds one of the least known Brazilian moss collections in the world. In this paper we provide a list the Brazilian types of mosses deposited in the type collection of LE. Totaling types for 41 species names from Brazil are listed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Leningrad; Mosses; Müller Hallensis; Russia; Saint Petersburg; Types.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200005

Musgos (Bryophyta) de bosques de Polylepis sericea (Rosaceae) del estado Mérida (Venezuela)
Provedor de dados: 51
Autores: Delgado,Jesus; León-Vargas,Yelitza.
Se presenta un listado de 90 especies de musgos asociados a parches de bosques de Polylepis sericea Wedd., en el estado Mérida, Venezuela. La familia Leucobryaceae es la más diversa con 14 especies. Bryaceae, Bartramiaceae y Pottiaceae, le siguen en orden de importancia taxonómica. Los géneros más diversos son Campylopus (14 especies), Leptodontium (5), Breutelia (4), Bryum (4), Zygodon (4) y Racomitrium (3). La condición acrocárpica es la dominante, representada por 68 especies, siendo los tepes altos los más frecuentes (41,11%), seguidos por los tepes cortos (24,44%) y los tapetes extensivos (8,89%). El análisis fitogeográfico muestra una predominancia del elemento neotropical (36%) sobre el elemento ampliamente distribuido en el mundo (27%). En la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bosques; Bryophyta; Musgos; Páramo; Polylepis sericea; Venezuela.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200010

Diversidad del género Luticola (Bacillariophyceae) en sedimentos holocenicos de la Puna Jujeña, Argentina
Provedor de dados: 51
Autores: Bustos,Sabrina; Morales,Marcelo R; Maidana,Nora I.
En el marco de las investigaciones paleoambientales que estamos desarrollando en la localidad de Barrancas (23° 18&amp;#8217; 08,7&amp;#8221; S; 66° 05&amp;#8217; 15,2&amp;#8221; O; 3666 m snm) detectamos, en sedimentos de los últimos 11.000 años, una alta diversidad y frecuencia de representantes del genero Luticola D.G. Mann. Se identificaron 10 especies, de las cuales dos son nuevas (Luticola punae sp. nov. y Luticola juliae sp. nov.). Se describen dos morfotipos de Luticola mollis. Dos de estas especies se citan por primera vez para Argentina y una para Sudamérica.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diatomeas; Biodiversidad; Humedales de altura; Holoceno.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100002

Determinación de la eficiencia de la micropropagación de genotipos de mandioca (Manihot esculenta, Euphorbiaceae) de interés para el Nordeste Argentino
Provedor de dados: 51
Autores: Medina,Ricardo Daniel; Schaller,Silvia Cristina; Dolce,Natalia Raquel; Mroginski,Luis Amado.
En la bibliografía se citan numerosos trabajos de propagación in vitro de mandioca, sin embargo sólo se ha establecido la eficiencia de la multiplicación para un número muy restringido de cultivares y/o subcultivos durante la micropropagación. El objetivo de este trabajo fue evaluar la multiplicación in vitro de 20 cultivares de mandioca de interés económico para el Nordeste Argentino (6 subcultivos totales realizados cada 30 días). Para ello, se cultivaron segmentos uninodales en medio basal de Murashige y Skoog (1962) más 0,01 mg/L de ácido 1-naftalenacético, 0,01 mg/L de 6-bencilaminopurina y 0,1 mg/L de ácido giberélico. Todos los cultivares evaluados regeneraron plantas durante los 6 subcultivos. Independientemente del subcultivo, el número promedio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Efecto del genotipo; Micropropagación; Subcultivos; Tasa de multiplicación; Mandioca.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300008

Rango geográfico y estructura espacial de linajes genéticos en Sophora linearifolia (Fabaceae), un arbusto endémico de las sierras centrales de Argentina
Provedor de dados: 51
Autores: Alercia,David; Giorgis,Melisa A; Funes,Guillermo; Cosacov,Andrea.
Las sierras de Córdoba y San Luis albergan una gran riqueza de especies endémicas. Un grupo importante de ellas muestra una distribución disyunta entre ambas serranías. Hasta la actualidad no existían estudios genéticos que permitieran inferir procesos históricos asociados a este patrón. Con este propósito caracterizamos el área de distribución y el patrón filogeográfico de Sophora linearifolia, abarcando todo su rango geográfico que incluye las Sierras Chicas (SC) y las Cumbres de Gaspar (CG) en Córdoba y el suroeste de las Sierras de San Luis (SL). Contrastamos la distribución actual con la distribución predicha a partir del modelado del nicho ecológico. Analizamos el nivel de variabilidad genética, la estructuración espacial del marcador de ADN...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ADN cloroplastidial; Biogeografía; Distribución disyunta; Filogeografía; Modelado de nicho ecológico; Neoendemismo; Sierras Pampeanas.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100011

Los briófitos de la Estancia Cerro Paine, Parque Nacional Torres del Paine, Magallanes, Chile
Provedor de dados: 51
Autores: Larraín,Juan; Bahamonde,Nelson.
Se presenta una lista de plantas no vasculares para la Estancia Cerro Paine, predio particular ubicado en el centro del Parque Nacional Torres del Paine. La lista incluye dos antocerotes, 29 hepáticas y 93 especies de musgos, totalizando 124 especies de briófitos. Se reportan 32 nuevos registros para la provincia de Última Esperanza, 11 para la Región de Magallanes y tres nuevos registros para Chile (Bryum apiculatum, Tortella fragilis y Valdonia microcarpa). Se extienden hacia el norte los límites de distribución de seis taxones, mientras que los de siete se extienden hacia el sur. Este es el primer listado de briófitos realizado dentro de los límites del Parque Nacional Torres del Paine.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bryophyta; Marchantiophyta; Anthocerotophyta; Bosques subantárticos; Reserva de la Biósfera.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100003

Leptodontium stellatifolium (Pottiaceae, Bryophyta) in la Réunion Island, a major range disjunction
Provedor de dados: 51
Autores: Zander,Richard H; Hedderson,Terry A.
A species of mountainous regions of Latin America, Leptodontium stellatifolium, is reported from La Réunion Island in the Indian Ocean. This is a major geographic range disjunction. The species is illustrated and described from La Réunion material, and its considerable variation across its range and within La Réunion is discussed. Explanations of its distribution are suggested in terms of both ancient sky and ocean island spore dispersal, and recent, human-mediated introduction. We provide a key for species of Leptodontium occurring on La Réunion.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Andes; Indian Ocean; La Réunion; Leptodontium stellatifolium; Pseudoparaphyllia.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200019

Relaciones fenéticas entre razas de maíz (Zea mays ssp. mays) nativas de la provincia de Jujuy (Argentina)
Provedor de dados: 51
Autores: Melchiorre,Pedro; Bartoloni,Norberto; Cámara Hernández,Julián A.
Se estudiaron las relaciones de similitud entre 15 razas de maíz nativas de la provincia de Jujuy (Argentina), mediante métodos estadísticos univariados (ANOVA) y multivariados (Análisis Discriminante Canónico, Análisis de Agrupamiento y Red de Prim), aplicados a 22 caracteres cuantitativos (morfológicos, reproductivos y fenológicos). El ANOVA detectó diferencias estadísticamente significativas entre razas para casi todas las variables. Las dos primeras variables canónicas (vc) explican el 75 % de la variación total. Los caracteres discriminantes asociados a la primera y segunda vc están relacionados con las dimensiones de la espiga y de los granos (número de hilera de granos por espiga y espesor de los granos) y principalmente a la longitud del ciclo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Evolución; Germoplasma de maíz (Zea mays ssp. mays); Razas de maíz; Mejoramiento de maíz; Taxonomía numérica.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400009

Cambios florísticos inducidos por la frecuencia de fuego en el Chaco Serrano
Provedor de dados: 51
Autores: Carbone,Lucas M; Aguirre-Acosta,Natalia; Tavella,Julia; Aguilar,Ramiro.
Las Sierras Chicas de Córdoba son el cordón montañoso con mayor frecuencia de fuego del centro de Argentina. Sin embargo, hasta el momento no se ha evaluado cuál es la respuesta de las comunidades de plantas del Chaco Serrano a los efectos de la frecuencia de fuego. En base a 23 años de historia de fuego, evaluamos la fisonomía de la vegetación, la riqueza y la composición de la comunidad de plantas vasculares en sitios no quemados, con baja y alta frecuencia de fuego en el distrito Chaqueño Serrano localizado en las Sierras Chicas de Córdoba. Encontramos que la frecuencia de fuego produce cambios en la estructura de la vegetación, en la riqueza y en la composición florística. Específicamente, observamos una disminución de la riqueza total de especies en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Régimen de fuego; Riqueza de plantas; Composición de especies; Especies indicadoras; Sierras Chicas.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400011

Revisión de la familia Polytrichaceae (Bryophyta) para Colombia
Provedor de dados: 51
Autores: Aponte-R,Angélica; Uribe-M,Jaime.
Se presenta la revisión taxonómica de la familia Polytrichaceae para Colombia. Diez y siete especies son reconocidas para el país. Se registra a Steereobryon elamellosum por primera vez para el país; se modifica la representación de especies en los casos de Atrichum, Polytrichum, Pogonatum, Polytrichadelphus y Steereobryon; se confirma la representación de Notoligotrichum y Oligotrichum. Se proponen quince nuevos sinónimos. La revisión incluye una clave general para los géneros de la familia, sinonimia, descripciones, ilustraciones y mapas de distribución.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bosque andino; Musgos acrocárpicos; Páramo.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200003

Philonotis pomangium (Bartramiaceae, Bryophyta): An addition to the Bryoflora of Peru
Provedor de dados: 51
Autores: Jimenez,Soledad; Suárez,Guillermo M.
Philonotis pomangium is a neotropical species recorded from Argentina, Bolivia and Brazil. It is characterized by the ovate-lanceolate leaves, laminal cell quadrate at the base, papillose at the distal angles, and propagules present (brood branches). During the revision of the genus Philonotis in southern South America some samples collected in Peru agreed with P. pomangium, a species not recorded for the country. In addition, the study of the type specimens of Philonotis boliviensis was performed, and it is proposed as a new synonym of P. pomangium. A description, photomicrographs on OM and SEM, comments on the species, and a comparative table for related Philonotis species of Peru are here presented. The Neotropical distribution of P. pomangium is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bartramia pomangium; Bolivia; Cusco; Philonotis boliviensis.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200014

Crecimiento miceliar de especies silvestres de hongos comestibles de los bosques andino-patagónicos: primeros pasos para su domesticación
Provedor de dados: 51
Autores: Toledo,Carolina Verónica; Barroetaveña,Carolina.
Los bosques de Nothofagus spp. de la Patagonia Argentina albergan hongos con características organolépticas y nutricionales que las tornan atractivas para su consumo y plausibles de ser cultivadas sobre diferentes sustratos orgánicos. Se evaluaron los parámetros óptimos de crecimiento vegetativo de 7 especies de hongos silvestres comestibles potencialmente cultivables que pueden ser encontrados en estos bosques (Aleurodiscus vitellinus, Fistulina antarctica, F. endoxantha, Grifola gargal, Lepista nuda, Lycoperdon perlatum y Macrolepiota afín procera). Se obtuvieron 5 cepas de cada especie y se realizaron tres ensayos: 1) determinación de la temperatura óptima de crecimiento, 2) evaluación del crecimiento en diferentes medios de cultivo y caracterización...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inóculo primario; Domesticación; Temperatura de crecimiento; Crecimiento en diferentes medios.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300004

Desarrollo de especies leñosas nativas y exóticas en cipresales patagónicos
Provedor de dados: 51
Autores: Stecconi,Marina; Quevedo,Laura; Magnin,Amaru; Torres,Cristian; Lediuk,Karen; Svriz,Maya; Grosfeld,Javier; Puntieri,Javier.
El crecimiento y la arquitectura de las especies leñosas que habitan los bosques inciden en la dinámica de estas comunidades. El objetivo principal de este estudio fue mejorar la comprensión de la dinámica de los cipresales patagónicos a partir del análisis del crecimiento longitudinal y de la arquitectura de las especies leñosas más abundantes en esas comunidades, las nativas: Aristotelia chilensis, Berberis microphylla, Lomatia hirsuta, Maytenus boaria, Myoschilos oblongum y Schinus patagonicus; y las exóticas: Juniperus communis, Prunus avium, Pseudotsuga menziesii y Rosa rubiginosa. El crecimiento longitudinal del eje principal no se relacionó necesariamente con el aumento en altura de las plantas durante el período de estudio (2012-14). Se registraron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brote anual; Arquitectura; Grupos funcionales; Invasiones; Eje principal; Reiteración.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300009

Aportes a la colección de hongos liquenizados del herbario del Instituto de Botánica Carlos Spegazzini (LPS)
Provedor de dados: 51
Autores: Lavornia,Juan M; García,Renato A; Rosato,Vilma G; Kristensen,María J; Chayle,Jorge A; Saparrat,Mario N.
El Instituto de Botánica Carlos Spegazzini (IBCS) (UNLP, La Plata) contiene un herbario de hongos (LPS) de aproximadamente 40000 ejemplares, con 4200 especies tipo. El objetivo de este trabajo fue examinar los ejemplares de hongos liquenizados depositados en el IBCS, actualizar su taxonomía y denominación, revisar las especies con determinación dudosa, identificar aquellos no determinados, e incorporarlos en el Herbario LPS. Se estudiaron 192 ejemplares de 11 provincias de Argentina y de Brasil, Uruguay y Francia y de se determinaron en base a su exo-morfología, cortes histológicos y reacciones histoquímicas. También se realizaron Cromatografías en Capa Delgada (TLC) para estudiar los metabolitos presentes. Se estableció la distribución geográfica en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungi; Herbario LPS; Líquenes; Argentina.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100001

Ampliação do conhecimento sobre adistribuição geográficade espécies de Briófitas no Brasil
Provedor de dados: 51
Autores: Yano,Olga; Bordin,Juçara.
São conhecidas no Brasil aproximadamente 1.524 espécies de briófitas, distribuídas ao longo de todo o território nacional. Coletas e estudos florísticos sempre revelam novas ocorrências, ampliando a distribuição geográfica de diversas espécies. O objetivo deste trabalho é ampliar o conhecimento da distribuição geográfica de quinze espécies de briófitas para os estados do Amazonas, Goiás, Rio de Janeiro e Rio Grande do Sul. Foram analisadas 30 amostras e identificadas nove espécies de musgos (Bryophyta) e seis de hepáticas (Marchantiophyta). Destas, duas espécies foram identificadas como novas citações para o estado do Rio Grande do Sul, uma para o estado do Amazonas e uma para o estado de Goiás. Onze espécies tiverem sua área de ocorrencia ampliada, sendo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bryophyta; Marchantiophyta; Novas ocorrências.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200018

Confluencia de experiencias etnomédicas y uso de plantas medicinales en practicantes nativos del Valle de Traslasierra (Departamento San Javier), Córdoba, Argentina
Provedor de dados: 51
Autores: Luján,M. Claudia; Barboza,Gloria. E; Martínez,Gustavo. J.
El &amp;#8220;Valle de Traslasierra&amp;#8221;, se extiende en el faldeo occidental de las Sierras de Los Comechingones. Su característico alejamiento de las grandes urbes, se modificó cualitativamente, debido a importantes corrientes migratorias, las que han aportado diversidad a este paisaje cultural. El objetivo es caracterizar la etnomedicina y la farmacopea natural de la región. Se recurrió a métodos cualitativos y cuantitativos mediante técnicas clásicas etnobotánicas. Se evidenció una rica terapéutica ejercida por practicantes nativos con un total de 231 taxones, 676 usos medicinales y 84 familias botánicas. Se presenta un análisis de frecuencias de usos y taxones por medio de figuras de estadística descriptiva. Las familias con mayor cantidad de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paisaje cultural; Etnobotánica; Población nativa; Inmigrantes.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400014

Heterogeneidad de la vegetación en ambientes basálticos del centro de Argentina
Provedor de dados: 51
Autores: Cantero,Juan José; Mulko,José; Núñez,César; Zeballos,Sebastián R; Sfragulla,Jorge A; Amuchastegui,Andrea; Barboza,Gloria E; Chiarini,Franco; Ariza Espinar,Luis; Bonalumi,Aldo A; Brandolin,Pablo; Cabido,Marcelo.
Se decribe la flora y la vegetación de pasiajes basálticos de la Sierra de Los Cóndores, Córdoba, Argentina. La vegetación se estudió según criterios de la escuela de Braun-Blanquet; la matriz de 98 inventarios × 272 spp. fue clasificada a través del método ISOPAM. El análisis discrimina tres comunidades correspondientes respectivamente a las tres geoformas relevadas en estos paisajes: Islas rocosas (inselbergs), la Matriz Natural que rodea a las Islas y la Matriz Agrícola que circunda al complejo de paisajes basálticos. Las tres comunidades difieren en su composición florística: las Islas rocosas son los sitios menos perturbados, más ricos en especies, con mayor diversidad, mayor número de especies endémicas y su fisonomía está dominada por formas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ambientes basálticos; Flora; Comunidades vegetales; Centro de Argentina.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100012

Rápido movimiento de plantas exóticas en la zona central de Chile: Una reconstrucción a través de evidencia histórica y palinológica
Provedor de dados: 51
Autores: Vargas,Patricia; Torrejón,Fernando; Pauchard,Aníbal; Urrutia,Roberto.
Para comprender la dinámica de las comunidades vegetales que conforman actualmente a la zona central de Chile, se realizó un análisis polínico-sedimentario que diferenció entre taxones nativos y exóticos. Este fue complementado con una reconstrucción histórica de los últimos 500 años del valle Itata, Región del Bio-Bio. Con lo anterior, se establecieron tres periodos históricos: Situación Prehispánica, se describe al valle como un llano provisto de vegetación xeromórfica, pobre en especies; Periodo de Auge Agrícola-ganadero, caracterizado por la aparición de las primeras plantas exóticas: Poaceae &gt;40um, Rumex, Rutaceae, Prunus, tréboles y cardos, las cuales se aclimataron y expandieron rápidamente, favorecidas aún más, por los conflictos bélicos y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Introducción; Plantas; Polen; Comparación; Data histórica.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100010

Gametophyte development and conservation of Ctenitis submarginalis (Dryopteridaceae) in Buenos Aires Province, Argentina
Provedor de dados: 51
Autores: Ramos Giacosa,Juan P; Gorrer,Daniel A; Giudice,Gabriela E; Luna,María L.
The spore germination and gametophyte development of Ctenitis submarginalis from Punta Lara Natural Reserve, Buenos Aires province were studied as a contribution to the conservation of the species in this protected area. Spores collected from natural populations were sowing in Dyer medium and germinated in six day with a percentaje of 88 % fifteen days after sowing. The germination is Vittaria type and the gametophyte development is Aspidium type. The gametophyte of Ctenitis submarginalis is cordate, with a deep notch and well developed and symmetric wings. The gametangia appear 50 days after sowing. The sporophyte emerges 190 days after sowing and two different hairs were observed in the first lamina. The in-vitro spore germination is a successful method...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation; Ctenitis; Dryopteridaceae; Fern; Gametophyte.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400007

A remarkable new species of Cheilolejeunea (Marchantiophyta: Lejeuneaceae) from Colombia
Provedor de dados: 51
Autores: Gradstein,S. Robbert; Reiner-Drehwald,M. Elena.
We describe the new liverwort species Cheilolejeunea schiavoneana M.E.Reiner &amp;amp; Gradst. from submontane rainforest in the Western Cordillera of Colombia. The new species is related to C. adnata (C. sect. Cheilolejeunea) but differs by larger plant, leaf and underleaf size, robust stems, a 5-6 cells wide ventral merophyte, abundance of microphyllous branches, and vegetative reproduction by caducous leaf lobes produced on flagelliform shoots. The latter feature is characteristic of the genus Rectolejeunea and its presence in Cheilolejeunea is apparently a case of parallel evolution. The discovery of C. schiavoneana adds a further endemic taxon to the rich flora of the Colombian Western Cordillera.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cheilolejeunea adnata; Cheilolejeunea schiavoneana; Cheilolejeunea section Cheilolejeunea; Colombia; Liverworts; Morphology; Taxonomy; Western Cordillera of Colombia.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200012

Sistema reproductivo y polinización de especies leñosas en una selva subtropical invadida por plantas exóticas
Provedor de dados: 51
Autores: Montaldo,Norberto H; Mantese,Anita I; Roitman,G. Germán.
En la selva ribereña de Punta Lara (provincia de Buenos Aires, Argentina) conviven siete especies leñosas dispersadas por aves, de las cuales cinco son nativas (Ocotea acutifolia, Allophylus edulis, Myrsine laetevirens, Blepharocalyx salicifolius y Citharexylum montevidense) y dos son exóticas invasoras (Rubus ulmifolius y Ligustrum lucidum). Si bien allí se ha estudiado la dispersión de semillas de estas especies, otros aspectos de su reproducción son desconocidos. En este trabajo estudiamos su sistema reproductivo, la calidad del servicio de polinización que reciben y los visitantes florales. Todas las especies son xenógamas. Una especie (M. laetevirens) es anemófila y las demás son visitadas principalmente de Dípteros, Himenópteros y Lepidópteros. El...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plantas invasoras; Selva ribereña; Biología reproductiva; Éxito de la polinización; Cargas de polen estigmáticas; Argentina.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400005

Propuesta metodológica para el estudio de macrorrestos de briofitas en turberas
Provedor de dados: 51
Autores: Savoretti,Adolfina; Fernández,Damián Andrés; Iglesias,Ari; Ponce,Juan Federico.
En esta contribución se dan a conocer las técnicas empleadas para el procesamiento de testigos provenientes de turberas, con el fin de abordar estudios paleobrioflorísticos sobre la base de macrorrestos del Cuaternario. El procesamiento propuesto procura que los restos preservados sean dañados en la menor medida posible y realizar un conteo de los diferentes tipos de fragmentos de cada uno de los taxones/morfotipos con el objetivo de realizar estudios comparativos de la tafonomía y con ello enriquecer las interpretaciones paleoecológicas y la comprensión del desarrollo de la turbera. Se propone adoptar la digitalización de imágenes de las muestras, permitiendo comparar de forma simple los macrorrestos entre las alícuotas, entre las secciones del testigo y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Briofitas; Cuaternario; Macrorrestos vegetales; Metodología.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200017

Tomentella (Thelephorales, Basidiomycota) en bosques de Nothofagaceae de Patagonia, Argentina: micorrizas de nuevas especies
Provedor de dados: 51
Autores: Salgado Salomón,María Eugenia; Barroetaveña,Carolina; Pildain,María Belen; Kuhar,Francisco; Rajchenberg,Mario.
La presencia de especies de Tomentella ha sido reportada abundantemente en bosques templados, tropicales y regiones circumpolares. Las especies del género Tomentella forman típicamente ectomicorrizas (EM) aunque también micorrizas orquioides, ericoides, monotroides y arbutoides. La descripción y caracterización de los morfotipos EM constituyen una herramienta muy útil en trabajos ecológicos. En este trabajo se presentan descripciones morfo-anatómicas de 4 EM de Tomentella asociadas a Nothofagus pumilio, N. dombeyi, N. antarctica, Lophozonia alpina y L. procera, identificadas molecularmente a nivel específico. La morfología y el tipo de exploración de las 4 EM fueron consistentes con lo reportado previamente para el género. Estas EM no presentaron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nothofagus; Ectomicorrizas; Descripciones; Morfo-anatomía.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300003

Fruiting material of Chenia lorentzii (Bryophyta, Pottiaceae) found in Argentina and an evaluation of the sporophyte taxonomic value in the genus Chenia
Provedor de dados: 51
Autores: Flores,Jorge R; Suárez,Guillermo M.
In the present contribution, the sporophyte of Chenia lorentzii is described in detail and microphotographs are provided. In addition, the role of sporophytic characters is discussed in a phylogenetic context. To accomplish this task, first, a phylogenetic analysis of a reduced dataset of Pottiaceae genera was carried out by using molecular data (nad5, rps4, 26S) and combined data (morphology and molecular markers). Then, gametophytic and sporophytic characters were mapped onto the molecular tree and their fit to the phylogeny was assessed on the basis of their extra steps and the number of diagnosed nodes. Results suggest that sporophytic characters should be treated with caution when nomenclatural generic changes are proposed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Character reconstruction; Morphology; Taxonomy.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200011

Morpho anatomical characterization and essential oils of Tagetes terniflora and Tagetes minuta (Asteraceae) growing in Tucumán (Argentina)
Provedor de dados: 51
Autores: Lizarraga,Emilio; Mercado,Maria I; Galvez,Carolina; Ruiz,Ana I; Ponessa,Graciela I; Catalan,Cesar A. N.
The essential oil composition and morpho-anatomy of Tagetes minuta, collected at &amp;#8220;El Mollar&amp;#8221; and two different populations of Tagetes terniflora collected in Tafí del Valle (Tucumán, Argentina) were studied. The essential oil of aerial parts (flowers and leaves) from both species was analyzed by gas chromatography-mass spectrometry. Qualitative and quantitative differences were observed in the composition of the essential oil from both species. Oxygenated monoterpenes were the dominant compounds in the essential oil from both collections of T. terniflora where the main component was cis-tagetone (33.6% and 58.4% respectively) accompanied by significant amounts of the monotepene hydrocarbon cis-&amp;#946;-ocimene (17.1% and 17.4%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tagetes terniflora; Tagetes minuta; Essential oil; Secretory tissues; Morpho-anatomy.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100006

Bryophytes as a material to build birds&amp;#8217; nests in Brazil
Provedor de dados: 51
Autores: De Almeida Amélio,Leandro; Marchi Do Carmo,Dimas; Soares De Lima,Jéssica; Fernandes Peralta,Denilson.
Birds&amp;#8217; nests are elaborate constructions that are built to provide a safe and secure environment for the eggs and hatchlings of birds to develop. Twigs and leaves represent common nesting materials in birds&amp;#8217; nests globally and with their beaks, they can carry materials, sometimes larger than the birds themselves, to construct their nests. In addition to twigs and leaves, birds also use various other materials less frequently, such as bryophytes, and in this study we examined the prevalence of bryophytes in birds&amp;#8217; nests in Brazil. We analyzed the nest composition of 21 birds&amp;#8217; nests from the Brazilian bryophyte collection at the Institute of Botany (SP Herbarium) and found that bryophytes were a widely used nesting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Brazil; Bryophytes; Nest composition.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200002

La familia Lindsaeaceae en Argentina
Provedor de dados: 51
Autores: Yañez,Agustina; Ponce,Mónica.
Se realiza un análisis morfológico de la familia de helechos Lindsaeaceae en la Argentina, y se actualizan los datos de su distribución. A partir de la rectificación de información previa debida a citas no corroboradas y erróneas determinaciones se confirma la presencia de un único taxón en el país: Lindsaea quadrangularis subsp. terminalis. Se provee una descripción morfológica detallada, consideraciones sobre el hábitat, notas relevantes, ilustraciones, fotografías y un mapa de distribución de la especie en el área de estudio. Se elabora una clave para identificar las especies del género Lindsaea para la Argentina y áreas limítrofes de Brasil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helechos; Lindsaea; Flora; Misiones; Argentina.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300013

Exomorfología y anatomía de la agalla bivalva foliar inducida por Rhopalomyia sp. (Insecta, Diptera, Cecidomyiidae) en Prosopis caldenia (Fabaceae)
Provedor de dados: 51
Autores: Corró Molas,Bárbara Mariana; Martínez,Juan José; Nacaratti,Santiago; Arrese,Juan José; Testa,Nicolás; Álvarez,Magalí Nerea.
En las hojas de caldén, Prosopis caldenia (Fabaceae), una especie aún no descripta de Rhopalomyia (Diptera: Cecidomyiidae) desarrolla agallas. Los objetivos de este estudio fueron describir exomorfológicamente la agalla inducida en los folíolos de la hoja de P. caldenia, diferenciar los estadios de desarrollo de la agalla y describir las modificaciones inducidas en los tejidos foliares agallados. Se colectaron hojas normales y con agallas entre febrero 2014 y noviembre 2015 en un fragmento de bosque de caldén ubicado en el área periurbana de Santa Rosa, La Pampa, Argentina. La morfología externa de la agalla se examinó mediante disección bajo microscopio estereoscópico. El examen de los tejidos foliares se realizó mediante preparados microscópicos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agallas foliares; Cecidomyiidae; Prosopis; Rhopalomyia.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300011

Identificación de Leguminosae-Caesalpinioideae arbustivas-arbóreas y lianas de la selva Paranaense (Misiones, Argentina) utilizando caracteres vegetativos
Provedor de dados: 51
Autores: Kostlin,Marcelo R.
En este trabajo se estudia la diversidad de caracteres morfológicos vegetativos de taxones nativos de la familia Leguminosae-Caesalpinioideae (en su sentido tradicional) de la Provincia de Misiones, Argentina, a fin de facilitar la identificación de géneros, especies, subespecies y variedades en ausencia de sus flores y frutos. Se estudiaron ejemplares de herbario de las 15 especies, subespecies y variedades de Caesalpinioideae arbustivas-arbóreas y lianas pertenecientes a 10 géneros presentes en Misiones. Los caracteres analizados fueron hábito, filotaxis, tallo, hojas, estípulas, glándulas y nectarios extraflorales, tipo de venación, pubescencia y yemas. Como resultado se presenta una clave para la identificación de todos los taxones estudiados y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clave de identificación; Distribución; Especies nativas; Fenología; Hábitat; Herbario; Morfología.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300014

Morphological variability of the nanoplanktonic diatom Thalassiosira laevis from coastal waters of Province of Buenos Aires (Argentina)
Provedor de dados: 51
Autores: Sar,Eugenia A; Sunesen,Inés.
Morphological variability of the nanoplanktonic diatom Thalassiosira laevis from coastal waters of Province of Buenos Aires (Argentina). Despite the fact that the genus Thalassiosira was previous and extensively studied including ultrastructural analysis of species found in phytoplanktonic samples collected from marine waters of Argentina, nanoplanktonic species have been frequently overlooked. This paper is devoted to show the morphological variation of Thalassiosira laevis, a nanoplanktonic species collected from marine coastal waters of the Province of Buenos Aires, to compare Argentinean material with those from China, Korea and Brazil described in the literature, and to record it for the first time from Argentina.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thalassiosira; Thalassiosira laevis; Morphological variability; New record for Argentina.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400001

Identificación del tipo morfológico de micorriza arbuscular en Phaeoceros laevis (Anthocerotophyta)
Provedor de dados: 51
Autores: Cottet,Agustina C; Messuti,María Inés.
Las micorrizas arbusculares han sido registradas para distintos representantes del Phylum Anthocerotophyta, entre ellos Phaeoceros laevis (L.) Prosk. En este trabajo se da a conocer el tipo morfológico de colonización por parte de hongos micorrícicos arbusculares en P. laevis, el cual corresponde a un intermedio entre los tipos Arum y Paris. Además, esta asociación se menciona por primera vez para los bosques templados del hemisferio sur. Se presentan descripciones breves e imágenes de las estructuras características de las micorrizas arbusculares presentes en P. laevis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asociación micorrícica; Bosques templados; Briófitos; Hemisferio sur.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200009

Nutrient content of woody species in the Patagonian steppe, Argentina
Provedor de dados: 51
Autores: Barría,Mabel; Crettón,Martina; Gurín,Celeste; Arce,María Elena; Rost,Enrique; Mazzuca,Marcia.
Woody plants constitute a vital food reserve for the herbivores inhabiting the Patagonian steppe. In a preliminary study, some of these plants showed a high content of ether extract (FAT). To determine whether the low availability of nitrogen in soils leads to low forage quality and whether a high FAT content correlates with a high amount of nutritive lipids, namely fatty acids (FA), chemical parameters of forage quality of aerial parts of thirteen woody plants from this steppe were analyzed. Plants showed moderate or low crude protein (CP) content, and, independently of the FAT content, all samples had approximately the same total content of FA (TFA), with an average of 1% of dry matter. The highest CP content was found in aerial parts of Atriplex lampa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acids; Proximal analysis; Woody plants.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400004

Notas nomenclaturales en el género Schinopsis (Anacardiaceae)
Provedor de dados: 51
Autores: Mogni,Virginia Y; Prado,Darién E; Oakley,Luis J.
Durante el estudio monográfico del género Schinopsis (Anacardiaceae) se realizó una revisión nomenclatural de sus especies y sinónimos. Se lectotipifican los nombres Schinopsis brasiliensis, S. brasiliensis var. glabra, S. heterophylla, S. marginata y S. peruviana y se indican algunos casos de lectotipificaciones desapercibidas en trabajos previos. Se designa un epitipo para S. haenkeana, entidad considerada hasta ahora como taxón dudoso.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epitipo; Lectotipo; Nomenclatura; Schinopsis.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100013

Chromosome numbers, meiotic abnormalities, and 2n pollen formation in accessions of the wild species Chrysolaena flexuosa (Vernonieae, Compositae) from its distribution range in Argentina
Provedor de dados: 51
Autores: Echeverría,María Lis; Camadro,Elsa Lucila.
Chrysolaena flexuosa is a South American species of potential ornamental value (basic chromosome number of x=10). Diploid (n=10) and tetraploid (n=20) cytotypes have been reported for its distribution area, although one hexaploid (n=30-32ca.) cytotype has been reported for its most southern distribution. To investigate if ploidy and latitude are positively related in Ch. flexuosa natural populations and if sexual polyploidization could have had a role in the origin of the polyploid cytotypes, we determined chromosome numbers, DNA content, and pollen viability and size, and analyzed microsporogenesis in samples of seven Argentinian accessions. Two of the northeastern accessions were diploid and one was tetraploid, whereas the four southeastern accessions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyploid cytotypes; DNA content; Flow cytometry; Meiotic abnormalities; Abnormal spindle orientation; 2n pollen.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400010

Modificaciones histológicas foliares causadas por organismos fúngicos en tres especies de Myrtaceae
Provedor de dados: 51
Autores: Mangone,Franco M; Catania,Myriam Del V; Albornoz,Patricia L.
La familia Myrtaceae es una de las más numerosas en Argentina. En la provincia de Tucumán habitan 11 especies nativas, de las cuales Blepharocalyx salicifolius (Kunth) O. Berg, Eugenia uniflora L. y Myrcianthes pungens (O.Berg) D. Legrand presentan importancia medicinal, alimenticia y forestal. La información sobre las especies fúngicas y las modificaciones histológicas foliares que ellos producen es escasa. Por lo tanto, el objetivo de la presente investigación fue identificar las especies de hongos en hojas de las tres especies arbóreas y describir las modificaciones anatómicas causadas por la presencia de los mismos. Se trabajó con material fresco al que se aplicó técnicas y tinciones convencionales para su estudio. Se identificaron 12 especies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomía foliar; Hongos; Myrtaceae.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300005

Diversidad de especies naturalizadas del género Opuntia (Cactaceae) utilizadas por los pobladores del norte de Córdoba (Argentina)
Provedor de dados: 51
Autores: Ahumada,María Luján; Trillo,Cecilia.
La agricultura comprendida como el cultivo y la domesticación de plantas constituye una práctica orientada por el conocimiento botánico de las diferentes culturas. El estudio de la diversidad de plantas cultivadas y domesticadas por un pueblo resulta útil para aproximarse a la comprensión de los intereses subyacentes en torno a las mismas. En Argentina, y en particular en Córdoba, son escasos los trabajos etnobotánicos acerca de las relaciones establecidas entre grupos humanos y las cactáceas, por lo cual en este trabajo se realizó una investigación etnobotánica con los pobladores criollos del norte de la provincia. La metodología utilizada consistió en entrevistas abiertas y semiestructuradas, recorridos por el área de estudio y recolección de material de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Etnobotánica; Botánica Económica; Cactáceas; Cultivo y domesticación de plantas.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100014

Taxonomic novelties in South American species of Gutierrezia (Asteraceae, Astereae)
Provedor de dados: 51
Autores: Ratto,Francisco; Bartoli,Adriana.
During the revision of South American species of Gutierrezia (Asteraceae, Astereae) taxonomic novelties were established: (1) two new varieties were described, Gutierrezia mandonii var. anomala from northwestern Argentina, and Gutierrezia isernii var. nivea from central and western Argentina; and (2) the species Gutierrezia pulviniformis was included as a new synonym of Gutierrezia spathulata.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Compositae; Varieties; Synonym.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400012

Avances en el estudio de biodeterioro asociado apresencia de líquenes en materiales arqueológicos líticos. La Primavera (Santa Cruz, Argentina)
Provedor de dados: 51
Autores: Magnin,Lucia Angelica; Lynch,Virginia; Gracía,Renato.
Con el objetivo de indagar acerca del biodeterioro causado por líquenes creciendo sobre materiales arqueológicos líticos, en este trabajo preliminar se analizaron diferentes artefactos procedentes de la localidad La Primavera. La metodología de análisis incluye técnicas de observación de bajos y altos aumentos y análisis de EDAX. Se identifican los líquenes presentes y se observan las superficies de estos artefactos que constituyen soportes para su crecimiento. Se observó y analizó la diversidad de especies presentes y se reconocieron cuatro tipos de bioalteraciones asociadas (microperforaciones, desagregación superficial de la roca, microfracturaciones internas y microfracturaciones superficiales). Entre los morfotipos identificados, el que al parecer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodeterioro; Líquenes; Artefactos arqueológicos líticos.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300002

Micromorfología y estructura de los frutos en Bulbostylis (Cyperaceae) y su valor sistemático en las especies de América austral
Provedor de dados: 51
Autores: López,María Gabriela; Gonzalez,Ana Maria.
El género Bulbostylis Kunth incluye aproximadamente 150 especies que habitan zonas tropicales y subtropicales en todo el mundo. En Bulbostylis, al igual que en otros géneros de Ciperáceas, la exomorfología de los frutos es uno de los caracteres más estables para la clasificación infragenérica. En este trabajo se dan a conocer la micromorfología y estructura de los frutos de Bulbostylis para veinte especies de América Austral, representadas en Argentina, Brasil (Paraná, Santa Catarina y Rio Grande do Sul), Chile, Paraguay y Uruguay. En base a estudios con microscopía óptica y electrónica de barrido se proponen agrupamientos, teniendo en cuenta la micromorfología de los aquenios así como la presencia y tipo de silicofitolitos. También se realizan...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: América Austral; Anatomía; Aquenios; Bulbostylis; Cyperaceae; EDX/MEB; Micromorfología.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100007

Los géneros de Heliotropiaceae en Argentina
Provedor de dados: 51
Autores: Luebert,Federico.
La delimitación genérica dentro de Heliotropiaceae ha sufrido cambios en el último tiempo que no son recogidos en publicaciones taxonómicas recientes sobre el grupo en Argentina. En este trabajo se actualiza la taxonomía de los géneros argentinos de Heliotropiaceae y se enumeran las especies aceptadas en cada uno de ellos. Se proporciona una breve descripción para cada género y una clave para diferenciarlos. Los géneros de Heliotropiaceae aceptados en este trabajo son Euploca, Heliotropium, Ixorhea y Myriopus, todos presentes en Argentina. Se designan lectotipos para Heliotropium hasslerianum (&amp;#8801;Euploca hassleriana) y Heliotropium patagonicum y se propone la nueva combinación Heliotropium lilloi (basada en Tournefortia lilloi) para completar el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Boraginaceae; Boraginales; Heliotropium; Taxonomía; Tournefortia.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400013

Homenaje a la Dra. Maria Magdalena Schiavone
Provedor de dados: 51
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200001

Caracteres foliares en diez especies neotropicales y argentinas de Canna (Cannaceae, Zingiberales)
Provedor de dados: 51
Autores: Ciciarelli,María De Las Mercedes; Passarelli,Lilian M; Rolleri,Cristina H.
Se llevó a cabo un estudio con microscopía de luz y electrónica de barrido (MEB) de los caracteres de la epidermis y de la ontogenia de los estomas en especies neotropicales de Canna (Cannaceae). Se estudiaron la presencia y tipos de indumento, el contorno foliar, los tipos de cera epicuticular, los modelos epidérmicos, el ordenamiento celular típico de epifilos e hipofilos, el espesor de la pared externa de las células epidérmicas y los caracteres de los estomas adultos paracíticos en ejemplares de C. ascendens, C. glauca, C. indica, C. lineata, C. paniculata, C. tandilensis y C. variegatifolia. Los caracteres se correlacionaron con el hábitat de las plantas. La ontogenia estomática se analizó en dos especies: C. coccinea y C. glauca; se encontraron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canna; Cannaceae; Hábitat; Epidermis; Ceras; Estrías; Ontogenia de estomas.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100008

Novedades sobre la familia Ditrichaceae (Bryophyta) en los pisos superiores de las Yungas subtropicales de Argentina
Provedor de dados: 51
Autores: Colotti,María T; Suárez,Guillermo M.
En este estudio se registra a Rhamphidium con R. dicranoides y a Pleuridium andinum por primera vez para el país y se actualiza el área de distribución de 3 taxa de Ditrichaceae en el noroeste de Argentina. El presente trabajo incluye una clave de los géneros de Ditrichaceae que se encuentran en el país, junto con la descripción, comentarios taxonómicos y un mapa de las especies aquí citadas.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Ditrichaceae; Musgos acrocárpicos; Taxonomía.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200008

Nuevos registros de Xylariales (Ascomycota) para la Argentina
Provedor de dados: 51
Autores: Sir,Esteban B; Silva,Patricia V; Robles,Carolina A; Vignale,M. Victoria.
Camillea scriblita y Nemania immersidiscus son registradas por primera vez para la micobiota Argentina. Se incluyen descripciones y fotografias de estas especies y de Phylacia turbinata, recientemente reportada para Argentina. Además se presenta un mapa con la distribución de los taxones conforme a sus registros en el Neotrópico.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Camillea; Nemania; Micogeografía.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300001

Ecoanatomia del ébano sudamericano: &amp;#8220;guayacán&amp;#8221; (Libidibia paraguariensis, Fabaceae)
Provedor de dados: 51
Autores: Giménez,Ana M; Bolzon Muniz,Graciela; Moglia,Juana G; Nigosky,Silvana.
La madera de Libidibia paraguariensis (D. Parodi) G. P. Lewis &amp;#8220;guayacán&amp;#8221;, es homóloga a la de Diospyros ebenum J. Koenig &amp;#8220;ébano&amp;#8221;. Es una madera cuyas características tecnológicas y organolépticas le otorgan extraordinaria calidad y gran potencial futuro. Por este motivo los objetivos del trabajo fueron: (1) profundizar el conocimiento de las cualidades anatómicas del leño y la corteza; (2) analizar la relación albura-duramen y (3) caracterizar los anillos de crecimiento. El estudio se realizó empleando muestras provenientes de Guasayán, Santiago del Estero y Villa Rio Bermejito, Chaco (Argentina). Seis árboles de cada sitio, fueron seleccionados al azar. Se consiguió una rodaja del fuste principal de cada individuo,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Libidibia paraguariensis; Albura; Anillos de crecimiento; Corteza; Duramen; Xilema.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000100005

Diferencias en el hábito de crecimiento como variable explicativa de la influencia climática en Prosopis flexuosa en el Desierto del Monte Central (Argentina)
Provedor de dados: 51
Autores: Piraino,Sergio; Roig Juñent,Fidel Alejandro.
Los métodos dendroclimatológicos representan una de las herramientas más valiosas para analizar la influencia del clima sobre la dinámica del incremento radial y la morfología de las plantas leñosas. En el Desierto del Monte Central, Prosopis flexuosa DC (algarrobo dulce), crece como árbol uni-fustal pero también como multi-fustal. Investigaciones anteriores han evidenciado la utilidad del ancho de anillo de esta especie como registro de eventos climáticos. Sin embargo, estas investigaciones han diferido metodológicamente, considerando o descartando los individuos multi-fustales. Este trabajo analizó si la variabilidad en el hábito de crecimiento expresa diferencias en la señal dendroclimática del algarrobo dulce. Dos cronologías de ancho de anillos, una...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algarrobo dulce; Ancho de anillo; Clima; Variabilidad intra-especifica.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300010

Morfología y distribución de Dolotortula mniifolia y Trachyphyllum dusenii (Bryophyta) en Panamá
Provedor de dados: 51
Autores: Gudiño Ledezma,José; Salazar Allen,Noris.
El género Dolotortula y la especie D. mniifolia, se registran por primera vez para Panamá. Se describen por primera vez para las poblaciones de Centroamérica de D. mniifolia tallos ramificados y borde de la hoja de color amarillo, éste en corte transversal, con 5-6 hileras de células de paredes engrosadas. Se detalla y amplía la morfología y distribución geográfica de Trachyphyllum y la especie T. dusenii, recientemente reportados para Panamá. Se reportan por primera vez hojas periqueciales débilmente serruladas para esta especie. La distribución de esta especie en Panamá es la más septentrional conocida para la América tropical, e incluye las únicas poblaciones del género conocidas para la vertiente del Pacífico. Se incluyen mapas con la distribución...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Centroamérica; Dolotortula; Musgos; Morfología; Neotrópico; Panamá; Trachyphyllum.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200013

Lorentziella (Gigaspermaceae, Bryophyta) new for Chile, and lectotypification of the genus
Provedor de dados: 51
Autores: Larraín,Juan; Fife,Allan; Atala,Cristian.
The genus Lorentziella is reported for the first time for Chile based on multiple collections done between the months of July and September 2016. New information is given about the ecology of this taxon and its global known distribution, as well as a distribution map. A lectotype for the genus Lorentziella is here selected and the genus authorship is corrected.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogeography; Ephemeral bryophytes; Herbarium collections; Mediterranean climate.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200015

Estudios citogenéticos en híbridos triploides y tetraploides de Turnera krapovickasii, T. scabra y T. subulata (Passifloraceae, Turneroideae)
Provedor de dados: 51
A fin de investigar las relaciones genómicas entre especies de la serie Turnera (x= 5), se lleva a cabo un programa de cruzamientos controlados y se obtuvieron numerosos híbridos. Entre las especies con flores amarillas de la serie Turnera, T. krapovickasii, T. scabra y T. subulata poseen citotipos diploide y autotetraploide. Hasta el momento se desconocen el grado de aislamiento reproductivo entre diploides y tetraploides y el grado de afinidad genómica de estas especies a nivel tetraploide. En este trabajo se presentan los resultados del análisis citogenético de los híbridos intraespecíficos triploides (2n=3x=15) de T. krapovickasii y T. scabra y los híbridos tetraploides (2n=4x=20) T. krapovickasii × T. scabra y T. subulata × T. scabra. En los híbridos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Turnera; Meiosis; Relaciones genómicas; Triploides; Tetraploides.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400008

The genus Stylosanthes (Fabaceae, Papilionoideae, Dalbergieae) in South America
Provedor de dados: 51
Autores: Vanni,Ricardo O.
The papilionoid genus Stylosanthes Sw. includes about 50 spp. distributed world wide in the tropics, approximately half of them grow in South America.The present study focuses on South American Stylosanthes. Based on examinations of herbarium specimens, as well as field observations, a total of 25 taxa (23 spp. and 2 varieties) are here described and identified with a key. Most of the species have been found to be more widely distributed than expected from the previous taxonomic literature, and the genus appears to be mainly concentrated in Brazil and Paraguay. Stylosanthes leiocarpa Vogel is new to the flora of Argentina and the presence of S. nervosa J. F. Macbr. is confirmed in Argentina. The nomenclature of S. guianensis (Aubl.) Sw. is analyzed....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leguminosae; South America; Stylosanthes; Taxonomy; Distribution; Nomenclature.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300012

Análisis aeropalinológico en tres áreas de vegetación dentro del Parque Nacional El Palmar (Colón, Entre Ríos) y su relación con lavegetación local y regional
Provedor de dados: 51
Autores: Muñoz,Nadia E; Di Pasquo,Mercedes; Biganzoli,Fernando; Batista,William B.
La diversidad de polen atmosférico colectado mensualmente durante dos años (2011-2013) en trampas Tauber en tres sitios del Parque Nacional El Palmar (provincia de Entre Ríos) es usada para caracterizar la vegetación. El sitio 1 es un área mixta compuesta por pastizales, palmares y humedales. El sitio 2 es un área de pastizales y el sitio 3 un palmar denso. Se identificaron 71 tipos polínicos comprendidos en 43 familias procedentes de fuentes locales, regionales y extraregionales. Dieciséis tipos resultaron abundantes con más de 1% del Annual Pollen Influx en al menos dos muestras. Diferentes factores relacionados con los cambios cuali-cuatitativos de los taxa en el intervalo de estudio son considerados. Por lo tanto, la composición florística de cada...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversidad polínica aérea; Vegetación; Parque Nacional El Palmar; Entre Ríos; Argentina.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300007

Morning glory species interference on the development and yield of soybeans
Provedor de dados: 53
Autores: Pagnoncelli,Fortunato De Bortoli; Trezzi,Michelangelo Muzell; Brum,Betania; Vidal,Ribas Antonio; Portes,Álvaro Fernando; Scalcon,Everton Luiz; Machado,Adriano.
ABSTRACT Plants from the genus ipomoea are among the most important weeds in Brazil. The objective of this study was to determine the impact of different densities of 2 species of Ipomoea (I. grandifolia and I. purpurea) under different environments (counties of Pato Branco and Renascença, Paraná state, Brazil) on soybean biometric variables, yield components and crop yield loss. Field experiments in 2 distinct places were conducted in a randomized block design, where 1 factor consisted of 8 plant densities (0, 2, 4, 6, 8, 10, 15 and 20 plants∙m−2), whereas the other factor consisted of the 2 Ipomoea species. Joint analysis of the data was performed considering the factors environment, Ipomoea densities and species. The impact of one Ipomoea plant∙m−2 was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Interspecific competition; Ipomoea spp.; Glycine max; Biometric variables; Yield components.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400470

Ripening of ‘Kumagai’ guavas and anthracnose control as affected by methyl jasmonate
Provedor de dados: 53
Autores: Silva,Barbara Marçon Pereira da; Binoti,Raquel Mantovani; Cia,Patrícia; Valentini,Sílvia Regina de Toledo; Bron,Ilana Urbano.
ABSTRACT Methyl jasmonate (MJ) is an endogenous regulator that can influence fruit ripening and the defense system against pathogens. This work verified the influence of this regulator on postharvest physiology, control of anthracnose and physicalchemical attributes of ‘Kumagai’ guava (Psidium guajava L.). Guavas harvested at mature-green and ripe stages were treated with 0, 1 and 10 μmol∙L−1 MJ as gas in hermetic containers (200 L) with air circulation for 24 h. Fruit were inoculated with Colletotrichum gloeosporioides spore suspension (105 spores∙mL−1) 24 and 48 h after treatment. During ripening, at 25 °C and 80 – 90% of relative humidity, respiration, ethylene production, anthracnose incidence, severity and quality of guavas were assayed. Data were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colletotrichum gloeosporioides; Psidium guajava L.; Growth regulator.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100167

Maintenance pruning in physalis commercial production
Provedor de dados: 53
Autores: D’angelo,Jessica Welinski de Oliveira; Bastos,Marília Camotti; Cuquel,Francine Lorena.
ABSTRACT Due to field and literature divergences about the best management of physalis (Physalis peruviana L.), this paper aimed to verify the effect of maintenance pruning on the productivity and quality of its fruit. The plants were submitted to 4 different ways of management during their entire cycle: (i) no stem pruning; (ii) keeping only 4 stems; (iii) keeping 6 stems; and (iv) keeping 8 stems. The sampling began 80 days after transplantation (DAT) of the seedlings and it was executed weekly, totaling 7 evaluations. The results demonstrated that pruned plants produced higher caliber fruits. However, the plants that did not receive pruning were the most productive. Therefore, as long as the price of physalis fruit is a matter of quantity and not of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physalis peruviana L.; Post-harvest; Small fruits; Culture management.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200214

Annona crassiflora Mart. (Annonaceae): effect of crude extract of seeds on larvae of soybean looper Chrysodeixis includens (Lepidoptera: Noctuidae)
Provedor de dados: 53
Autores: Massarolli,Angélica; Pereira,Mônica Josene Barbosa; Foerster,Luis Amilton.
ABSTRACT The effect of a crude extract of Annona crassiflora was evaluated on larvae of the soybean looper, Chrysodeixis includens (Lepidoptera: Noctuidae) in different stages of larval development. The extract was prepared with seeds of A. crassiflora fruits collected in the state of Mato Grosso, Brazil. The extract was diluted in water and solubilizer agent at the concentrations of 0.5, 1.0, 2.0, 4.0, and 8.0%; it was tested by ingestion of treated leaves and contact. The mortality rate of topically treated caterpillars of first, third, and fifth instars was significantly higher than that of the control group. For first instar caterpillars, mortality was observed within the first 24 h after application, while, for the remaining instars, it was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araticum; Bioinsecticide; Marôlo; Phytoinsecticide.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300398

Use of microsatellites for evaluation of genetic diversity in cherry tomato
Provedor de dados: 53
Autores: Aguirre,Nelson Ceballos; López,Walter; Orozco-Cárdenas,Martha; Coronado,Yacenia Morillo; Vallejo-Cabrera,Franco.
ABSTRACT Much of the diversity of tomato is found in wild forms, the most important being the Solanum lycopersicum L. var. cerasiforme and S. pimpinellifolium. The objective of this research was to assess the genetic diversity of 30 introductions of cherry tomato with 36 microsatellite molecular markers. The study was conducted at the Plant Transformation Research Center (PTRC) of the University of California. A dendrogram was built using the Dice-Nei and Li similarity index and the UPGMA clustering method, where introductions were differentiated without preserving a distribution pattern obeying the geographical area of origin. A coefficient of genetic differentiation was found (Fst = 0.3474), showing a high genetic differentiation of the introductions;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant genetic resources; Microsatellites; Real-time PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200220

Genetic diversity and population densities of endophytic Bacillus spp. in yam plants
Provedor de dados: 53
Autores: Souza,Jorge Teodoro de; Santos,Ana Cláudia Oliveira Souza; Monteiro,Fernando Pereira; Batista,Mariah Rodrigues; Santos,Patrícia Oliveira dos; Carvalho,Larissa Ferreira; Corrêa,Elida Barbosa.
ABSTRACT This study was conducted as a first step in exploiting endophytic bacteria to improve yam production. Little information is available on population densities and genetic diversity of endophytic bacteria in yam cultivated in tropical regions. This study demonstrated that higher densities of total endophytic bacteria and Bacillus occur in the interior of roots and decrease as the sampled plant organ departs from soil. Bacillus represents approximately 1% of the total bacterial endophytic population. Random Amplified Polymorphic DNA (RAPD) analyses performed with 88 randomly-selected Bacillus isolates resulted in 28 groups, and sequence analyses of the 16S region of the ribosomal DNA of 24 isolates representing all major RAPD groups revealed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dioscoriaceae; Genetic diversity; Population densities; Endophytes; Bacterial ecology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200203

Genetic parameters estimates and visual selection for leaves production in Ilex paraguariensis
Provedor de dados: 53
Autores: Sturion,José Alfredo; Stuepp,Carlos André; Wendling,Ivar.
ABSTRACT The selection of yerba mate superior genotypes, based on each plant leaf weight, is based on genetic parameters obtained from experimental plantations and it is practically impossible from the fourth year of age. Therefore, we estimate genetic parameters and check the feasibility of selection through notes and weight estimates of each tree at 18.5 years of age. The genetic material consists of a combined trial of provenances and progenies of half-sibs with 140 progenies from 7 provenances, installed in Ivaí, Paraná, Brazil, in a randomized block design with 10 repetitions. The genetic control of leaf production is of low magnitude (ĥ2a= 0.175042 ± 0.0393) revealing high influence of the environment. The additive genetic correlations between the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic correlations; Yerba mate; Silviculture; Progeny trial.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400492

Food quantity and quality of cassava affected by leguminous residues and inorganic nitrogen application in a soil of low natural fertility of the humid tropics
Provedor de dados: 53
Autores: Moura-Silva,Aline Gomes; Aguiar,Alana das Chagas Ferreira; Jorge,Neuza; Agostini-Costa,Tânia da Silveira; Moura,Emanoel Gomes.
ABSTRACT The aim of this study was to test the hypothesis that the quality and quantity of biofortified cassava root in a humid tropical environment can be modified with the application of a combination of low- and high-quality residues of leguminous tree species. The experiment was designed as a 6 × 2 factorial (a combination of 4 legume species versus 2 levels of nitrogen) with 4 replications in a randomized block design and the following treatments: Gliricidia + Acacia, Gliricidia + Leucaena, Gliricidia + Clitoria, Leucaena + Acacia, Leucaena + Clitoria, and a control without legumes. We analyzed the shoot weight, number of roots/plant, root weight, root production, proximate composition, as well as the mineral, carotenoid, and pro-vitamin A contents....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofortification; Food security; Green manure; Nutrients.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300406

Effect of glutenin subunits on the baking quality of Brazilian wheat genotypes
Provedor de dados: 53
Autores: Costa,Mariana Souza; Scholz,Maria Brígida dos Santos; Miranda,Martha Zavariz; Franco,Célia Maria Landi.
ABSTRACT This study aimed to evaluate the effect of the high and low molecular weight glutenin subunits on the grain traits of sixteen Brazilian wheat genotypes. Grain hardness index, milling traits, physicochemical and rheological properties of the flour, and specific volume and firmness of the bread were evaluated. Physicochemical properties of the flour were not influenced by glutenin subunits. Genotypes with subunits at the Glu-B1 (17+18 or 7+8), Glu-D1 (5+10), and Glu-A3 (b) were associated with strong flours and bread with high specific volume and low firmness. The subunits at the Glu-A1 and Glu-B3 had no effect on the rheological properties of the dough and bread quality, while the subunit 2+12 at Glu-D1 negatively affected the resistance to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High and low molecular weight glutenin subunits; Rheology; Baking.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100011

Variability of physical properties of soil and rice grown under cover crops in crop-livestock integrated system
Provedor de dados: 53
Autores: Trevisan,Rodrigo Gonçalves; Freddi,Onã da Silva; Wruck,Flávio Jesus; Tavanti,Renan Rimoldi; Peres,Fernanda Salles Cunha.
ABSTRACT The production systems of upland rice culture in Mato Grosso are not consolidated yet while the effects of soil physical properties and their correlation with rice yield in crop-livestock integrated systems are not defined as well. Therefore, this study determined the spatial variability of physical properties of soil and rice cultivated in no-tillage system under different cover crops, using principal components analysis and geostatistics. The experiment was conducted in Santa Carmen, northern Mato Grosso. A regular grid with 100 sample points distributed in an area of 26,400 m2 was installed. Soil and rice samples were collected to determine rice variables and soil physical properties. The average rice yield was 1.70 Mg∙ha−1, ranging from 0.70...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orysa sativa; Soil management; Agricultural sustainability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100145

Symbiotic and agronomic efficiency of new cowpea rhizobia from Brazilian Semi-Arid
Provedor de dados: 53
Autores: Marinho,Rita de Cássia Nunes; Ferreira,Linnajara de Vasconcelos Martins; Silva,Aleksandro Ferreira da; Martins,Lindete Míria Vieira; Nóbrega,Rafaela Simão Abrahão; Fernandes-Júnior,Paulo Ivan.
ABSTRACT Cowpea is a very important crop to Brazilian Semi-Arid mainly small family-based farmers. Rhizobia inoculation is a practice, easy to use, and cheap technology that increases cowpea productivity. The aim of this study was to evaluate the efficiency of two new rhizobia isolates in greenhouse and field as well as classify them taxonomically. To bacterial identification the 16S rRNA gene of ESA 17 and ESA 18 isolates were sequenced. The greenhouse test was conducted with pots containing 3 L of soil and the bacterial isolates evaluated were ESA 17, ESA 18, BR 3267 or BR 3262 strains. A field experiment was implemented on a Vertisol in Juazeiro, Bahia State, to evaluate the cowpea growth and productivity. In this experiment, the peat-based inoculants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bradyrhizobium; Inoculant; Biological nitrogen fixation; Strain selection; São Francisco River Valley.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200273

Soil structural quality degradation by the increase in grazing intensity in integrated crop-livestock system
Provedor de dados: 53
Autores: Auler,André Carlos; Galetto,Shivelly Los; Hennipman,Fabrício Siqueira; Guntzel,Eduardo Daniel; Giarola,Neyde Fabíola; Fonseca,Adriel Ferreira da.
ABSTRACT The intensification of soil use, as in integrated croplivestock system (ICLS), might promote soil structural degradation. A field method to evaluate the soil structural quality is the Visual Evaluation of Soil Structure (VESS). Studies on the application of this method to ICLS are few. This work aimed to evaluate the structural quality of a Dystrudept under ICLS and different grazing intensities through VESS. Thus, the soil structure was evaluated in light grazing (LG) and heavy grazing (HG) in comparison to a neighboring native forest (NF) as reference area. After the grazing period, 10 trenches were dug in each area to collect soil monoliths. The identification of structural differences and the attribution of visual scores were carried out...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle trampling; Soil compaction; Visual Evaluation of Soil Structure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400550

Plant parameters and must composition of ‘Syrah’ grapevine cultivated under sequential summer and winter growing seasons
Provedor de dados: 53
Autores: Pedro Júnior,Mário José; Hernandes,José Luiz; Bardin-Camparotto,Ludmila; Blain,Gabriel Constantino.
ABSTRACT Plant variables and must physicochemical properties were evaluated for the grapevine ‘Syrah’ cultivated in sequential growing seasons (summer and winter) from 2011 to 2015. The vines were trellised in vertical shoot position, grafted on Paulsen 1103, with approximate density of 5,800 plants∙ha−1. They were grown under plastic overhead cover. The experimental design was completely randomized, and the following variables were measured at the harvest: number of branches, number of clusters, cluster weight and yield, soluble solids content, pH, and titratable acidity. The highest values of yield, cluster weight, and titratable acidity were observed during the summer growing season, while the highest values of soluble solids content and pH were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis spp.; Soluble solids; Titratable acidity; Wine grape.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200345

Plot size and number of repetitions in vetch
Provedor de dados: 53
Autores: Cargnelutti Filho,Alberto; Alves,Bruna Mendonça; Follmann,Diego Nicolau; Bem,Cláudia Marques de; Schabarum,Denison Esequiel; Stefanelo,Lucas da Silva; Wartha,Cleiton Antonio; Kleinpaul,Jéssica Andiara; Chaves,Gabriela Görgen; Uliana,Daniela Barbieri; Pezzini,Rafael Vieira.
ABSTRACT The objectives of this work were to determine the optimum plot size and number of repetitions to evaluate the fresh matter weight of vetch (Vicia sativa L.) in sowing densities. Fortyeight uniformity trials of 6 m × 6 m were conducted. Sixteen trials were evaluated in each sowing density (40, 60, and 80 kg∙ha−1). Each trial was divided into 36 basic experimental units (BEU) of 1 m × 1 m, totaling 1,728 BEU. In each BEU, the fresh matter was weighed. The optimum plot size was determined by the method of maximum curvature of the coefficient of variation model. The means were compared among sowing densities by the Scott-Knott’s test. The number of repetitions — for experiments with completely randomized and randomized block designs, in scenarios of i...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vicia sativa L.; Uniformity trials; Experimental design; Cover crops; Experimental precision.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200178

Resistência a ácaros de clones de seringueira nas condições do noroeste paulista
Provedor de dados: 53
Autores: Vieira,Marineide Rosa; Celoto,Fernando Juari; Scaloppi Junior,Erivaldo José; Agustini,José Antonio.
Resumo Calacarus heveae Feres (Eriophyidae) e Tenuipalpus heveae Baker (Tenuipalpidae) podem causar intenso desfolhamento em plantas de seringueira. Na perspectiva do Manejo Integrado de Pragas, o uso de clones com resistência é uma importante estratégia de controle. O objetivo deste trabalho foi avaliar a resistência de clones de seringueira ao ataque desses ácaros em experimento conduzido em Votuporanga (SP). Foram avaliados os clones IAC 301, IAC 330, IAN 4493, OS 22, PB 233, PB 254, PC 96, PC 119, PC 140, PC 141, PM 10 e RRIM 600, totalizando 12 tratamentos e 3 repetições, em delineamento experimental em blocos casualizados. As avaliações populacionais de C. heveae e T. heveae foram realizadas pela contagem em laboratório dos ácaros e exúvias presentes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea brasiliensis; Calacarus heveae; Tenuipalpus heveae; Acari; Resistência de plantas a artrópodes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100102

Tamanho de amostra para determinação da condutividade elétrica individual de sementes de girassol
Provedor de dados: 53
Autores: Haesbaert,Fernando Machado; Lopes,Sidinei José; Mertz,Liliane Marcia; Lúcio,Alessandro Dal’Col; Huth,Caroline.
RESUMO O teste de condutividade elétrica é um teste de vigor de sementes utilizado para avaliar a qualidade das sementes e complementar o teste de germinação. O tamanho da amostra necessária para a estimação da média de condutividade elétrica de sementes é diretamente proporcional à variabilidade dos dados e confiabilidade desejada na estimativa. Uma técnica adequada para dimensionamento amostral é a utilização de intervalos de confiança, obtidos por reamostragem, com a vantagem de não dependerem da distribuição de probabilidade dos dados. O objetivo deste trabalho foi estimar o tamanho de amostra necessário para o teste de condutividade elétrica individual em sementes de girassol. Foram utilizados 7 lotes de sementes de girassol, sendo 3 da cultivar Hélio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus L.; Vigor; Amostragem; Precisão experimental.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100054

Plot size and number of replications to evaluate the grain yield in oat cultivars
Provedor de dados: 53
Autores: Lavezo,André; Cargnelutti Filho,Alberto; Bem,Cláudia Marques de; Burin,Cláudia; Kleinpaul,Jéssica Andiara; Pezzini,Rafael Vieira.
ABSTRACT The objectives of this study were to determine the optimum plot size (Xo) and the number of replications to evaluate grain yield and verify the variability of Xo among oat cultivars. Thirtytwo uniformity trials of 3 × 3 m were performed, being 8 from each cultivar (URS Charrua, URS Taura, URS Estampa, and URS Corona). Each uniformity trial was divided in 36 basic experimental units (BEU) of 0.5 × 0.5 m. Grain yield was determined in each BEU. The Xo was determined by the method of maximum curvature of the coefficient of variation model. Mean comparisons among cultivars were performed by the Scott-Knott test via bootstrap. The number of replications was calculated by an iterative process until convergence for experiments in completely randomized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa L.; Variability; Uniformity trial; Experimental design.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400512

Sugarcane straw decomposition and carbon balance as a function of initial biomass and vinasse addition to soil surface
Provedor de dados: 53
Autores: Yamaguchi,Carina Sayuri; Ramos,Nilza Patrícia; Carvalho,Cristina Silva; Pires,Adriana Marlene Moreno; Andrade,Cristiano Alberto de.
ABSTRACT The objective of this study was to evaluate sugarcane straw decomposition and the potential of increasing soil carbon as a function of the initial biomass and vinasse addition to soil surface. The experimente consisted of incubation (240 days, in the dark, humidity equivalent to 70% of soil water retention capacity and average temperature of 28 °C) of Oxisol soil samples (0-20 cm soil layer) with straw added to soil surface at rates of 2; 4; 8; 16 and 24 t∙ha−1 and with or without vinasse addition (200 m3∙ha-1). The following variables were determined: released C-CO2, remaining straw dry matter, carbon straw and soil carbon concentration. The added biomass did not influence straw decomposition rate, but vinasse treatments provided rates between 70...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon mineralization; Nitrogen; Waste.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100135

Phosphorus fractions in soil with a long history of organic waste and mineral fertilizer addition
Provedor de dados: 53
Autores: Couto,Rafael da Rosa; Ferreira,Paulo Ademar Avelar; Ceretta,Carlos Alberto; Lourenzi,Cledimar Rogério; Facco,Daniela Basso; Tassinari,Adriele; Piccin,Rogério; Conti,Lessandro De; Gatiboni,Luciano Colpo; Schapanski,Denis; Brunetto,Gustavo.
ABSTRACT Applications for long periods of organic animal waste as a source of nutrients to crops can contaminate the soil and the surface and subsurface waters. This study aimed to evaluate how the utilization of organic waste, after successive applications, affects P fractions in the soil and consequently environmental contamination. In an experiment conducted for 8 years, totaling 12 applications with pig slurry manure (PSM), liquid cattle manure (LCM), swine deep bedding (SDB), and mineral fertilizer (NPK), 460; 505; 1.111; and 535 kg P∙ha−1 were added to the soil through PSM, LCM, SDB, and NPK, respectively. In September 2012, soil samples were collected in the layers 0.0 – 0.04; 0.04 – 0.08; 0.08 – 0.12; 0.12 – 0.16; 0.16 – 0.20 m, prepared and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal manure; Availability; P fractionation; Environmental contamination.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100155

Non-invasive spectral detection of the beneficial effects of Bradyrhizobium spp. and plant growth-promoting rhizobacteria under different levels of nitrogen application on the biomass, nitrogen status, and yield of peanut cultivars
Provedor de dados: 53
Autores: Elsayed,Salah; Elhoweity,Mohamed; El-Hendawy,Salah; Schmidhalter,Urs.
ABSTRACT High-throughput phenotyping using spectral reflectance measurements offers the potential to provide more information for making better-informed management decisions at the crop canopy level in real time. The aim of this study was to investigate the suitability of hyperspectral reflectance measurements of the crop canopy for the assessment of biomass, nitrogen concentration, nitrogen uptake, relative chlorophyll contents, and yield in 2 peanut cultivars, Giza 5 and Giza 6. Peanuts were grown under field conditions and subjected to 3 doses of nitrogen fertilizer with or without the application of 2 bio-fertilizers, Bradyrhizobium spp. or plant growth-promoting rhizobacteria. Simple linear regression of normalized difference spectral indices and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofertilizer; Phenomics; Phenotyping; Precision agriculture; Spectral reflectance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200189

Agronomic performance of green cane fertilized with ammonium sulfate in a coastal tableland soil
Provedor de dados: 53
Autores: Oliveira,Ana Paula Pessim; Alves,Bruno José Rodrigues; Anjos,Lúcia Helena Cunha dos; Lima,Eduardo; Zonta,Everaldo; Pereira,Willian; Soares,Paula Fernanda Chaves.
ABSTRACT The recent approach of eliminating the usage of fire for sugarcane harvesting resulted in managing the crop on a trashblanketed soil, to which a proper recommendation of N fertilization is lacking, a problem that remains in the coastal tablelands of the Espírito Santo State, Brazil. This study aimed at evaluating the effect of increasing N rates on stalk and sugar yields and the N use efficiency by the crop. The experimental area planted with sugarcane, at the first ratoon, is located in Linhares, Espírito Santo State. The treatments consisted of N rates varying from 80 to 160 kg N∙ha−1 as ammonium sulphate, and a control without N, in a completely randomized blocks experimental design. Stalk yield increased with the N rate, and fitting the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Sugarcane harvesting systems; Nitrogen requirements.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200246

Stem conduction systems effect on the production and quality of mini tomato under organic management
Provedor de dados: 53
Autores: Candian,Joara Secchi; Martins,Bruno Novaes Menezes; Cardoso,Antonio Ismael Inácio; Evangelista,Regina Marta; Fujita,Erika.
ABSTRACT This research evaluated the influence of stem conduction types on the production and physicochemical characteristics of tomato fruits (hybrid Coco, mini type) under organic management. The experiment was conducted between August 2013 and January 2014. The treatments consisted of 4 different conduction systems: 2 traditional stems; 2 stems emerging from axillary cotyledon buds (“bottom stem”); 3 “traditional” stems and 4 stems emerging from tip pruning. Eleven harvests were conducted from 22nd November 2013 to 31st January 2014. Data collected included fruit number per plant, yields (g∙plant−1), fruit physicochemical characteristics, average weight, fruit diameter, pH, titratable acidity (TA), soluble solids (SS), SS/TA ratio, reducing sugars,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum L.; “bottom stem”; Tip pruning; Physicochemical characteristics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200238

A practical approach for assessing the efficiency of coated urea on controlling nitrogen availability
Provedor de dados: 53
Autores: Mesquita,Geisa Lima; Zambrosi,Fernando César Bachiega; Cantarella,Heitor.
ABSTRACT We propose an approach for assessing the efficiency of coating materials on controlling nitrogen (N) availability to plants. It is based on the use of coated and soluble urea (UR) applied to corn over 3 growing cycles, as follows: coated UR with longevity of 2 (UR-2m) or 4 months (UR-4m) with application of 900 mg N∙pot−1 at the beginning of the experiment, soluble UR with a split application of 900 mg N∙pot−1 (300 mg N∙pot−1 per growing cycle, UR-3x), soluble UR with a sole application of 900 mg N∙pot−1 at the beginning of the experiment (UR-1x), and a control treatment. At the end of each growing cycle, shoots were harvested to estimate N provision by the UR by quantifying dry matter (DM) and N uptake. In the first cycle, UR-2m and UR-4m...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coating; Fertilizer efficiency; Nitrogen fertilizer; Nutrient uptake.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200311

Involvement of peroxidases in structural changes of barley stem
Provedor de dados: 53
Autores: Lidija,Begović; Lepeduš,Hrvoje; Lalić,Alojzije; Štolfa,Ivna; Jurković,Zorica; Kovačević,Josip; Cesar,Vera.
ABSTRACT The aim of this study was to investigate anatomical characteristics of barley (Hordeum vulgare L.) internodes and to reveal the connection with activity of guaiacol-peroxidases, their isoenzyme profiles, lignin, and cellulose content. Three lower internodes were sampled at elongation stage and differed in their anatomical features by showing that lignin deposition follows developmental pattern. Epidermis and hypodermis in the first internode were characterized by continuous layer of the lignified cells while in the second and third internode thin walled parenchyma cells could be observed in the hypodermis. These observations were in accordance with increment of peroxidase activity from the first to the third internode. Two acidic and 2 basic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lignin; Cell wall; Internode; Hordeum vulgare L.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300352

Dimensionamento amostral e associação linear entre caracteres de Crotalaria spectabilis
Provedor de dados: 53
Autores: Toebe,Marcos; Bandeira,Cirineu Tolfo; Fortes,Sabrina Kitina Giordano; Carvalho,Juliana Oliveira de; Tartaglia,Francieli de Lima; Tambara,André Limana; Melo,Patricia Jesus de.
RESUMO Os objetivos deste trabalho foram determinar o tamanho de amostra necessário para a estimação da média de caracteres e avaliar as relações lineares existentes entre caracteres de plantas de Crotalaria spectabilis. Foi conduzido um experimento com C. spectabilis na safra 2014/2015, sendo os seguintes caracteres avaliados em 100 plantas: altura da planta (AP), número de ramos produtivos (NRP), massa seca da parte aérea (MSPA), massa seca de vagens (MSVG), número de vagens (NVG), peso médio de cada vagem (PMVG), número de sementes (NS), número médio de sementes por vagem (NSVG), massa de cem grãos (MCG) e peso total de sementes (PTS). Foram calculadas medidas de tendência central, de dispersão e de distribuição, foi verificada a normalidade dos dados e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Precisão experimental; Planejamento experimental; Análise de trilha; Seleção indireta.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100045

TVDI spatiotemporal pattern of a soybean growing area in humid subtropical climate
Provedor de dados: 53
Autores: Schirmbeck,Lucimara Wolfarth; Fontana,Denise Cybis; Schirmbeck,Juliano.
ABSTRACT The most southern Brazilian state, Rio Grande do Sul, is characterized by high crop yield and is, currently, the third leading soybean producer in the country. Therefore, agriculture is very important to the economy of the region. Because agriculture is highly dependent on variable weather parameters, the present study aimed to test the Temperature-Vegetation Dryness Index (TVDI) as a regional indicator of water status under the climate and soybean crop management conditions that predominate in northwestern Rio Grande do Sul. For this, soybean crop seasons with contrasting yields were selected: 2004 – 2005 (yield 0.5 t∙ha–1) and 2009 – 2010 (2.7 t∙ha–1). TVDI was obtained from the surface temperature (TS) and Normalized Difference Vegetation Index...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water status; NDVI; Surface temperature.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300447

Contribution of non-target-site resistance in imidazolinone-resistant Imisun sunflower
Provedor de dados: 53
Autores: Breccia,Gabriela; Gil,Mercedes; Vega,Tatiana; Altieri,Emiliano; Bulos,Mariano; Picardi,Liliana; Nestares,Graciela.
ABSTRACT The first commercial herbicide-resistant trait in sunflower (Helianthus annuus L.) is known as ‘Imisun’. Imidazolinone resistance in Imisun cultivars has been reported to be genetically controlled by a major gene (known as Imr1 or Ahasl1-1) and modifier genes. Imr1 is an allelic variant of the Ahasl1 locus that codes for the acetohydroxyacid synthase, which is the target site of these herbicides. The mechanism of resistance endowed by modifier genes has not been characterized and it could be related to non-target-site resistance. The objective of this study was to evaluate the role of cytochrome P450 monooxygenases (P450s) in Imisun resistance. The response to imazapyr herbicide in combination with P450s inhibitor malathion was evaluated in 2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus L.; Cytochrome P450 monooxygenases; Imazapyr; Herbicide resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400536

Microbial activity of soil with sulfentrazone associated with phytoremediator species and inoculation with a bacterial consortium
Provedor de dados: 53
Autores: Melo,Christiane Augusta Diniz; Souza,Wendel Magno de; Carvalho,Felipe Paolinelli de; Massenssini,André Marcos; Silva,Antonio Alberto da; Ferreira,Lino Roberto; Costa,Maurício Dutra.
ABSTRACT Phytostimulation plays a key role in the process of rhizodegradation of herbicides in soil. Additionally, bio-enhancement associated with phytoremediation may increase the efficiency of the decontamination process of soils with herbicides. Therefore, the objective of this study was to evaluate the biomass and microbial activity of soil contaminated with sulfentrazone and cultivated with phytoremediator species plus a bacterial consortium. The experiment was conducted in a greenhouse, carried out with a 2 × 4 × 4 completely randomized factorial design with 4 replications. The first factor consisted of the presence or absence of bio-enhancement with a bacterial consortium composed of Pseudomonas bacteria; the second factor consisted of a monoculture...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bio-enhancement; Phytostimulation; Herbicide; Metabolic quotient; Microbial quotient.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200300

Potential of popcorn germplasm as a source of resistance to ear rot
Provedor de dados: 53
Autores: Kurosawa,Railan do Nascimento Ferreira; Amaral Junior,Antonio Teixeira do; Vivas,Janieli Maganha Silva; Guimarães,Amanda Gonçalves; Miranda,Samila Barbosa; Dias,Vicente Mussi; Scapim,Carlos Alberto.
ABSTRACT Because of its multi-purpose nature, popcorn has sparked the interest of the World Trade Organization as regards fungal contamination by mycotoxins. However, no investigations have been conducted on popcorn for resistance of genotypes to ear rot. The aim of this study was to evaluate the potential of popcorn genotypes as to resistance to ear rot and rotten kernels, as an initial step for the implementation of a breeding program with the popcorn crop in Northern Rio de Janeiro State, Brazil. Thirty-seven accessions from different ecogeographic regions of Latin America were evaluated in 2 cultivation periods, in a randomized block design with 4 replications. We evaluated the incidence of rotten ears, incidence of rotten ears caused by Fusarium spp.,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Fusarium spp.; Genetic resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300378

Development of mango wilt in mango cultivars submitted to salt stress
Provedor de dados: 53
Autores: Vieccelli,Juliana Cristina; Araujo,Leonardo; Lopes,Ueder Pedro; Siqueira,Dalmo Lopes de; Rodrigues,Fabrício de Ávila.
ABSTRACT Mango wilt, caused by Ceratocystis fimbriata, is one of the most important diseases affecting mango yield worldwide. Salt stress can affect host defense responses against pathogens infection. The aim of this study was to evaluate the development of mango wilt in 2 mango cultivars submitted to salt stress. Mango plants from cultivars Tommy Atkins and Ubá, considered to be moderately resistant and resistant to mango wilt, respectively, were grown in plastic pots which contained 20 kg of washed sand and daily irrigated with 3 L of a modified Hoagland solution during 40 days before being submitted to salinization. For this process of salinization, the plants received nutrient solution containing 0, 30, 60, and 90 mmol∙L–1 of sodium chloride (NaCl)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ceratocystis fimbriata; Mangifera indica; Resistance; Salinity; Vascular pathogen.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300372

Respiration rate and ethylene metabolism of ‘Jonagold’ apple and ‘Conference’ pear under regular air and controlled atmosphere
Provedor de dados: 53
Autores: Saquet,Adriano Arriel; Streif,Josef.
ABSTRACT The 1-aminocyclopropane-1-carboxylate (ACC) oxidase activity, ethylene production, CO2 release and O2 uptake of ‘Jonagold’ apple and ‘Conference’ pear were investigated during regular air and controlled atmosphere storage. Storage conditions tested at 0 °C during 6 months, with a further 10 d shelf-life in air at 20 °C were: 0.5 kPa O2 + 6.0 kPa CO2; 3 kPa O2 + 6 kPa CO2; 1 kPa O2 + 3 kPa CO2; 1.5 kPa O2 + 1.5 kPa CO2; 0.5 kPa O2 + 0.5 kPa CO2 and 2 kPa O2 + 1 kPa CO2. Apple and pear kept in regular air showed higher ACC-oxidase activity, ethylene production and respiration rates. Under controlled atmosphere, lower O2 and/ or higher CO2 partial pressures strongly inhibited ACC-oxidase activity and ethylene production of apple and pear. Agreeing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica Borkh.; Pyrus communis L.; Respiration; Respiratory quotient.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200335

Acúmulo e exportação de macronutrientes em beterraba sob diferentes manejos de fertirrigação e salinidade
Provedor de dados: 53
Autores: Silva,Alexsandro Oliveira da; Silva,Ênio Farias de França e; Klar,Antônio Evaldo.
RESUMO A fertirrigação é uma das principais formas de adubação parcelada; entretanto, se aplicados em excesso, os fertilizantes podem prejudicar o desenvolvimento da cultura. O objetivo deste trabalho foi avaliar o acúmulo e exportação de macronutrientes em um cultivo de beterraba sob 2 manejos de fertirrigação em diferentes níveis de salinidade do solo. O experimento foi realizado em casa de vegetação no município de Botucatu (SP). Os tratamentos constituíram-se da combinação dos fatores salinidade do solo (1,0; 3,0; 6,0; 9,0; 12,0 dS∙m−1), manejo da fertirrigação (M1= tradicional e M2= com controle da concentração iônica) e cultivares de beterraba (C1 = Early Wonder e C2 = Itapuã), em um esquema fatorial 5 × 2 × 2, com 4 repetições em blocos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta vulgaris L.; Condutividade elétrica; Fertilizantes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100125

Sunki mandarin and Swingle citrumelo as rootstocks for rain-fed cultivation of late-season sweet orange selections in northern São Paulo state, Brazil
Provedor de dados: 53
Autores: Girardi,Eduardo Augusto; Cerqueira,Thales Sandoval; Cantuarias-Avilés,Tatiana Eugenia; Silva,Simone Rodrigues da; Stuchi,Eduardo Sanches.
ABSTRACT In Brazilian regions affected by the citrus sudden death disease, sweet orange cultivation depends on the use of resistant rootstocks. Rangpur lime was mainly replaced by Swingle citrumelo and Sunki mandarin rootstocks, more drought-sensitive ones. The diversification of scion selections is also desirable aiming at the increasing demand for not from concentrate orange juice (NFC) that requires high-quality fruits. In this work, we evaluated the performance of 6 selections of Valencia (IAC, Dom João, Late Burjasot IVIA 35-2, Rhode Red SRA 360, Temprana IVIA 25 and Campbell) and Natal IAC sweet oranges grafted onto Swingle citrumelo and Sunki mandarin. The planting occurred in 2001 under rain-fed cultivation in Bebedouro, northern São Paulo state,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis. C. sunki; [C. paradisi × Poncirus trifoliata]; Drought tolerance; Fruit quality; Production.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400501

Mapping and allelic sequencing of a long sterile lemma trait in rice
Provedor de dados: 53
Autores: Jiang,Liangrong; Zhu,Zhenzhong; Huang,Rongyu; Huang,Yumin; Wang,Houcong; Zheng,Jingsheng; Fang,Xunjun.
ABSTRACT Some outer floral organs are unique in gramineous plants, like the sterile lemma and rudimentary glume in rice. However, their development mechanisms are still poorly understood. In this study, we used 4 mutants with long sterile lemma (LSL), named JF11, JF12, JF13 and JNY-7, to be crossed with Aijiaonante (AJNT) and Nipponbare (NIP), respectively. Genetic analysis indicated that LSL trait exhibited recessive heredity and was controlled by a common allele named sl-1(t). Using the method of bulk segregant analysis and linkage analysis between SSR markers and LSL trait based on F2 populations, the sl-1(t) gene was located at the interval between RM20903 and RM20948 on chromosome 7. The interval harbors a known G1 gene, which regulates the sterile...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L.; Gene mapping; ALOG domain.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200229

Action of Canavalia ensiformis in remediation of contaminated soil with sulfentrazone
Provedor de dados: 53
Autores: Madalão,João Carlos; Souza,Matheus Freitas de; Silva,Alberto Antônio; Silva,Daniel Valadão; Jakelaitis,Adriano; Pereira,Gustavo Antônio Mendes.
ABSTRACT This study evaluated the jack bean (Canavalia ensiformis) as a potential remediator of sulfentrazone in the soil. The experiment was conducted under field conditions in a complete randomised block design. The treatments consisted of soils with and without herbicide application as well as the absence and presence of C. ensiformis cultivation associated with incorporation into the soil or the removal of shoots of C. ensiformis. Sorghum was planted as a bioindicator to evaluate the remediation efficiency of jack bean. Sulfentrazone application in areas without C. ensiformis cultivation decreased plants stands, productivity, and height of sorghum compared to treatments where C. ensiformis was cultivated. Sorghum cultivated in succession to C....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioremediation; Soil decontamination; Herbicides; Residue; Contamination.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200292

Nitrogen fertilization in top dressing for wheat crop in succession to soybean under a no-till system
Provedor de dados: 53
Autores: Galetto,Shivelly Los; Bini,Angelo Rafael; Haliski,Adriano; Scharr,Danilo Augusto; Borszowskei,Paulo Rogério; Caires,Eduardo Fávero.
ABSTRACT Agricultural intensification to improve wheat yield has increased the demand for nitrogen fertilizers. This study aimed to investigate the wheat response in succession to soybean due to application of nitrogen rates and sources in top dressing, as well as to determine the N rates of maximum technical yield (MTY) and maximum economic yield (MEY). A field experiment was carried out in Ponta Grossa, Paraná State, Brazil, on a clayey Typic Hapludox (Oxisol) under a continuous no-till. A randomized block design was used, with 3 replications in a 4 × 3 complete factorial arrangement. The treatments consisted of a control and 3 N rates at 40; 80 and 120 kg∙ha−1 as calcium nitrate (CN), ammonium sulfate (AS), and urea (UR) in top dressing at tillering of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Nitrogen; Calcium nitrate; Ammonium sulfate; Urea.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200282

Growth, phenology, and seed viability between glyphosate-resistant and glyphosate-susceptible hary fleabane
Provedor de dados: 53
Autores: Kaspary,Tiago Edu; Lamego,Fabiane Pinto; Cutti,Luan; Aguiar,Adalin Cezar de Morais; Rigon,Carlos Alberto Gonsiorkiewicz; Basso,Claudir José.
ABSTRACT Glyphosate is the herbicide most used worldwide. In cropping systems that rely on repeated applications of glyphosate or cultivate genetically modified soyabean crop, there are numerous cases of glyphosate resistant weeds, including Conyza bonariensis. Differences among competitive ability of Conyza spp. have been found. However, little information is available on the fitness costs related to glyphosate resistance in Conyza bonariensis. We evaluated growth, phenology, and seed viability of glyphosate-resistant (GR) and glyphosate-susceptible (GS) Conyza bonariensis from Brazil, in 2012 (fall/winter) and 2013 (spring/summer). When grown alone, in pots, C. bonariensis GR biotype developed more rapidly than the GS biotype, as evidenced by their...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conyza bonariensis; Plant height; Dry weight; Leaf area; Seed set.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100092

Potassium-modulated physiological performance of mango plants infected by Ceratocystis fimbriata
Provedor de dados: 53
Autores: Cacique,Isaias Severino; Bispo,Wilka Messner Silva; Araujo,Leonardo; Aucique-Pérez,Carlos Eduardo; Rios,Jonas Alberto; Silva,Leandro Castro; Rodrigues,Fabrício Ávila.
ABSTRACT Mango wilt, caused by the fungus Ceratocystis fimbriata, is an important disease affecting mango production. In view of the beneficial effects of potassium (K) in other profitable crops and the lack of information about the effect of macronutrients on mango wilt development, the present study aimed to evaluate how mango plants supplied with K respond physiologically when infected by C. fimbriata. Mango plants (» 3 years old) from cultivar Ubá were grown in plastic pots containing 58 mg of K·dm−3 (original K level based on the chemical analysis of the substrate) or in plastic pots with substrate amended with a solution of 0.5 M potassium chloride (KCl) to achieve the rate of 240 mg K·dm−3. Disease symptoms were more pronounced in inoculated plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mangifera indica; Gas exchange; Host defense; Mango wilt; Plant nutrition; Vascular disease.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400521

Electrical conductivity of the nutrient solution and plant density in aeroponic production of seed potato under tropical conditions (winter/spring)
Provedor de dados: 53
Autores: Calori,Alex Humberto; Factor,Thiago Leandro; Feltran,José Carlos; Watanabe,Eduardo Yuji; Moraes,Carolina Cinto de; Purquerio,Luís Felipe Villani.
ABSTRACT The recent introduction in Brazil of production of quality seed potatoes in hydroponic systems, such as aeroponics, demands studies on the nutritional and crop management. Thus, this study evaluated the influence of electrical conductivity of the nutrient solution and plant density on the seed potato minitubers production in aeroponics system. The Agata and Asterix cultivars were produced in a greenhouse under tropical conditions (winter/spring). The experimental design was a randomized block in a split-split plot design. The plot consisted of 4 electrical conductivities of the nutrient solution (1.0; 2.0; 3.0; and 4.0 dS∙m−1); the subplot, of 4 plant densities (25; 44; 66; and 100 plants∙m−2); and the subsubplot, of the 2 potato cultivars (Ágata...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum L.; Greenhouse; Pre-basic seed potato; Soilless production; Spatial arrangement; Plant nutrition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100023

Early performance of ‘Kampai’ and ‘Rubimel’ peach on 3 training systems
Provedor de dados: 53
Autores: Pasa,Mateus da Silveira; Fachinello,José Carlos; Schmitz,Juliano Dutra; Rosa Júnior,Horacy Fagundes da; Franceschi,Émerson de; Carra,Bruno; Giovanaz,Marcos Antônio; Silva,Carina Pereira da.
ABSTRACT The aim of this study was to examine the early performance of ‘Kampai’ and ‘Rubimel’ peach on 3 training systems. The study was conducted between 2010 and 2013. Treatments were the training systems ‘Ypsilon’, Central Leader, and Open Center, arranged in a randomized complete block design. Assessed parameters were production per tree, fruit weight, yield, fruit firmness, and soluble solids. The early yield and economic return are greater in Central Leader training system for both cultivars. Besides, training system does not influence fruit quality attributes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Yield; Precocity; Planting density.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100082

Reaction of cabbage lines reveals resistance to infection by Cucumber mosaic virus
Provedor de dados: 53
Autores: Sevik,Mehmet Ali; Deligoz,Ilyas.
ABSTRACT Cucumber mosaic virus (CMV) is one of the most economically damaging viral pathogens affecting vegetable crops around the world. In the present research, 50 cabbage (Brassica oleracea L.) lines chosen from the Black Sea Agricultural Research Institute (BSARI, Turkey) were evaluated for their reaction to CMV. The level of resistance to CMV was determined based on biological assays, symptom expression, disease severity rating, and viral titer, as determined by ELISA. Eight cabbage lines were identified as moderately susceptible and 3 were susceptible to the CMV-BA isolate. These plants exhibited various symptoms and accumulated high levels of virus titer. However, the results showed that 17 lines had high resistance, 12 were found to be resistant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea; Breeding; CMV; Reaction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100086

Yield responses of 12 okra cultivars to southern root-knot nematode (Meloidogyne incognita)
Provedor de dados: 53
Autores: Mukhtar,Tariq; Hussain,Muhammad Arshad; Kayani,Muhammad Zameer.
ABSTRACT Meloidogyne incognita is one of the most widespread and damaging plant-parasitic nematodes throughout the world and substantially affects growth and yield of okra (Abelmoschus esculentus L). In the present study, effects of M. incognita on yield parameters of 12 okra cultivars with varying levels of resistance or susceptibility were assessed. M. incognita caused significant reductions in yield parameters of okra plants of all the cultivars. Maximum reduction of 34.1% in yield was observed in highly susceptible (HS) cultivar Sharmeeli. The nematode caused 20 and 17.6% reductions in yields in susceptible (S) cultivars Okra Sindha and Anmol, respectively. Moderately susceptible (MS) cultivars suffered 5.9 to 12.9% reductions in yields. In case of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abelmoschus esculentus; Root-knot nematodes; Growth variables; Genotypes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100108

Multivariate analysis of mineral content associated with flesh browning disorder in ‘Fuji’ apples produced in Southern Brazil
Provedor de dados: 53
Autores: Corrêa,Thais Roseli; Steffens,Cristiano André; Amarante,Cassandro Vidal Talamini do; Miqueloto,Aquidauana; Brackmann,Auri; Ernani,Paulo Roberto.
ABSTRACT Flesh browning is a physiological disorder that occurs in ‘Fuji’ apples during storage, which causes considerable postharvest losses of fruit produced in Southern Brazil. This work aimed to assess the mineral attributes [Ca; Mg and K contents and the Mg/Ca; K/Ca and (K + Mg)/Ca ratios] associated with the flesh browning disorder incidence, as well as to identify which of these mineral attributes better discriminate the differences in the degree of susceptibility to flesh browning disorder in ‘Fuji’ apples stored under controlled atmosphere (CA; 1.2 kPa O2 + 2.0 kPa CO2 and 1.2 kPa O2 + &lt; 0.5 kPa CO2; 0.5 ± 0.1 °C and 96 ± 2% RH, during an 8-month period). Apples from 2 orchards in Fraiburgo, Santa Catarina, 3 orchards in São Joaquim, Santa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Physiological disorder; Canonical discriminant analysis; Calcium.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200327

Prohexadione calcium reduces vegetative growth and increases fruit set of ‘Smith’ pear trees, in Southern Brazil
Provedor de dados: 53
Autores: Carra,Bruno; Spagnol,Daniel; Abreu,Everton Sozo de; Pasa,Mateus da Silveira; Silva,Carina Pereira da; Hellwig,Cristiano Geremias; Fachinello,José Carlos.
ABSTRACT Prohexadione calcium (P-Ca) has been reported to effectively control shoot growth in several pear cultivars, but with a few reports about its efficiency under the climatic conditions of southern Brazil. Therefore, the objective of this study was to evaluate vegetative growth, production, and fruit quality of ‘Smith’ pear trees in response to the use of different rates of P-Ca in the climatic conditions of southern Brazil. The experiment was conducted during the 2013/2014 and 2014/2015 seasons, in a 6-year-old ‘Smith’ pear orchard, trained to a central-leader system, with spacing of 1.5 × 4.8 m, grafted onto Pyrus calleryana Decne. Different P-Ca rates were applied (100, 200, 300, and 400 mg∙L–1) in different stages: first, in early spring for all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus sp.; Vigor; Plant growth regulators; Return bloom; Fruit quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300360

Cytomolecular characterization of cultivars and landraces of wheat tolerant and sensitive to aluminum toxicity
Provedor de dados: 53
Autores: Oliveira,Érica Cristina de; Pinto-Maglio,Cecília Alzira Ferreira.
ABSTRACT Karyotyping and chromosome complement knowledge are a prerequisite for cytogenetic mapping. The aim of this study was to characterize 1 common wheat cultivar (BH 1146) and 4 durum wheat genotypes (IAC 1003, Langdon, P19 and P33) from the breeding program of the Agronomic Institute of Campinas (IAC), using karyotype analysis together with Chromomycin A3/4’-6-Diamidino-2-phenylindole (CMA/DAPI) banding techniques for longitudinal characterization of chromosomes and fluorescence in situ hybridization (FISH) in the mapping of the 45S rDNA region. Durum wheat chromosome complement number was 2n = 4x = 28 with the following karyotype formula: 22m + 6sm. Common wheat chromosome complement number was 2n = 6x = 42 with the following karyotype formula: 34m...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Triticum turgidum ssp. durum; Karyotype; CMA/DAPI banding; FISH-rDNA; Cytomolecular mapping.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400456

Phosphorus fractions in apple orchards in southern Brazil
Provedor de dados: 53
Autores: Schmitt,Djalma Eugênio; Brunetto,Gustavo; Santos,Elaine dos; Wagner,Winiciu de Lima; Sete,Paula Beatriz; Souza,Monique; Ambrosini,Vítor Gabriel; Santos,Matheus Ademir dos; Tiecher,Tales; Comin,Jucinei José; Couto,Rafael da Rosa; Gatiboni,Luciano Colpo; Giachini,Admir.
ABSTRACT Phosphorus (P) applications at dosages higher than the necessary may cause P buildup in the soil labile fractions and, consequently, pollution of water sources. This study aimed to assess accumulation of P fractions as well as the parameters of adsorption isotherms in soil profiles having a history of application of phosphate fertilizers and cultivated with apple trees. Soil samples were collected from an area with no history of cultivation and 2 apple orchards cultivated for 8 (P8) and 18 (P18) years, in the city of Urubici, Santa Catarina, southern Brazil. Soil samples were air dried, sieved in a 2-mm mesh, and subjected to chemical analyses (P adsorption) besides P chemical fractionation. Applications of phosphate fertilizers to the orchards,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apple orchard; Phosphate fertilization; P chemical fractionation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300422

Physiological changes and in the carbohydrate content of sunflower plants submitted to sub-doses of glyphosate and trinexapac-ethyl
Provedor de dados: 53
Autores: Vital,Roberto Gomes; Jakelaitis,Adriano; Silva,Fábia Barbosa; Batista,Priscila Ferreira; Almeida,Gabriel Martins; Costa,Alan Carlos; Rodrigues,Arthur Almeida.
ABSTRACT The maturing of drift used in the culture of sugar cane can have harmful effects on other crops grown in the vicinity of sugar cane plantations. Among these, sunflower grown in the off-season can have its growth and productivity affected by drift. The objective of this research was to evaluate whether the drift of trinexapac-ethyl and glyphosate promotes changes in the photosynthetic metabolism of sunflower plants. Two trials were carried out to evaluate the effects of these products on gas exchange, chlorophyll fluorescence, chloroplastid pigments, membrane permeability, sugar content, as well as shikimic acid and malondialdehyde concentration in the treated plants. In the first experiment, we tested glyphosate in doses of 0 (control); 3.6; 7.2;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gibberellin; EPSPs; Photosystem II; Photochemical efficiency.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100033

Sampling grids for monitoring Euschistus heros infestation in soybean
Provedor de dados: 53
Autores: Pias,Osmar Henrique de Castro; Cherubin,Maurício Roberto; Berghetti,Juliano; Kuss,Cassiano Carlos; Santi,Antônio Luis; Basso,Claudir José.
ABSTRACT Euschistus heros is one the most important pest insect in soybean fields in Brazil. Therefore, site-specific management applied for controlling E. heros can result in economic and environmental benefits. However, sampling protocols for assessing spatialtemporal variability of this soybean pest and, then, for guiding a more sustainable pest management, were still unknown. Thus, the objective of this study was to compare the efficiency of sampling grid sizes for monitoring the spatial variability of E. heros infestation along the soybean reproductive stages. Nine sampling campaigns were carried out using the beating sheet method, from R2 to R7 soybean phenological stages. It was used a sampling grid of 10 × 10 m, totaling 338 points in an soybean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical brown stink bug; Pest sampling protocol; Spatio-temporal variability; Precision agriculture.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300386

Model of pre-harvest quality of pineapple guava fruits (Acca sellowiana (O. berg) burret) as a function of weather conditions of the crops
Provedor de dados: 53
Autores: Parra-Coronado,Alfonso; Fischer,Gerhard; Camacho-Tamayo,Jesús Hernán.
ABSTRACT Weather conditions influence the quality parameters of pineapple guava fruit during growth and development. The aim of this study was to propose a model of pre-harvest fruit quality as a function of weather conditions in the cultivation area. Twenty trees were flagged per farm in 2 localities of the Department of Cundinamarca, Colombia: Tenjo (2,580 m.a.s.l.; 12.5 °C; relative humidity between 74 and 86%; mean annual precipitation 765 mm) and San Francisco de Sales (1,800 m.a.s.l.; 20.6 °C; relative humidity between 63 and 97%; mean annual precipitation 1,493 mm). Measurements were performed every 7 days during 2 harvest periods starting on days 96 (Tenjo) and 99 (San Francisco de Sales) after anthesis and until harvest. The models were obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Total soluble solids; Total titratable acidity; Firmness; Growing degree days.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100177

Surface and incorporated liming effects on clay dispersion, water availability, and aeration capacity of a Dystrudept soil
Provedor de dados: 53
Autores: Auler,André Carlos; Pires,Luiz Fernando; Caires,Eduardo Fávero.
ABSTRACT Liming represents a management procedure that can affect the soil structure and its thermodynamic processes. In this context, the aims of this study were to assess (i) the effects of the surface and incorporated liming on the clay dispersion, soil water availability, and aeration capacity; (ii) the influence of soil chemical alterations in its physical attributes. For this, a field experiment was installed in a family farming property, located in the southeastern region of the State of Paraná, in a Dystrudept soil. The treatments were 3 application modes (on the surface, incorporated via plowing and incorporated via subsoiling and harrowing), with and without 15 Mg∙ha–1 of lime, aiming to increase the base saturation in the topsoil (0 – 0.20 m) to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water field capacity; Soil acidity; Cation exchange capacity; No-tillage system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300433

SH1 leaf rust and bacterial halo blight coffee resistances are genetically independent
Provedor de dados: 53
Autores: Rodrigues,Lucas Mateus Rivero; Braghini,Masako Toma; Guerreiro Filho,Oliveiro.
ABSTRACT Coffee resistance to Pseudomonas syringae pv. garcae has been associated to pleiotropic effect of SH1 allele, present in coffee plants resistant to certain races of Hemileia vastatrix, the causal agent of leaf rust, or genetic linkage between resistance alleles to both pathogens. To validate this hypothesis, 63 coffee plants in F2 generation were evaluated for resistance to 2 isolates of H. vastatrix carriers of alleles, respectively, v2, v5 (isolate I/2015) and v1; v2; v5 (isolate II/2015) with the objective to confirm presence of SH1 allele in resistant plants to isolate I/2015. The same coffee plants were evaluated for resistance to a mixture of P. syringae pv. garcae strains highly pathogenic to coffee. Results showed that, among F2 coffee...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Resistant cultivars; Pseudomonas syringae pv. garcae; Linkage; Hemileia vastatrix; Pleiotropic effect.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200209

Differential response of microbial respiration to supplied nitrogen forms in 3 contrasting alpine meadow soils on the Tibetan Plateau
Provedor de dados: 53
Autores: Zeng,Xiaoyang.
ABSTRACT An incubation experiment was conducted to examine the effects of nitrogen (N) applications in different forms (NH4NO3, NH4Cl, and KNO3) on microbial respiration considering 3 different alpine meadow soils (C poor soil, pH = 8.1, 1.6% C; C moderate soil, pH = 6.0, 5.0% C; C rich soil, pH = 7.1, 7.4% C) in the Tibetan Plateau. The addition of NH4NO3 and NH4Cl increased the microbial respiration in C poor soil, but KNO3 had no effect. The inorganic N forms had no effects on C rich soil, but decreased microbial respiration in C moderate soil. Soil microbial respiration levels across the different types were ordered as follows: C poor soil &lt; C rich soil &lt; C moderate soil, regardless of N addition. These results suggest that the effect of N on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: C cycling; Microbial activity; N deposition; Soil properties; High-altitude region.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300416

Statistical methods to study adaptability and stability of wheat genotypes
Provedor de dados: 53
Autores: Bornhofen,Elesandro; Benin,Giovani; Storck,Lindolfo; Woyann,Leomar Guilherme; Duarte,Thiago; Stoco,Matheus Giovane; Marchioro,Sergio Volmir.
ABSTRACT The sensitivity of wheat crop to environmental variations frequently results in significant genotype (G) x environment (E) interaction (GEI). We compared statistical methods to analyze adaptability and stability of wheat genotypes in value for cultivation and use (VCU) trials. We used yield performance data of 22 wheat genotypes evaluated in three locations (Guarapuava, Cascavel, and Abelardo Luz) in 2012 and 2013. Each trial consisted of a complete randomized block design with three replications. The GEI was evaluated using methodologies based on mixed models, analysis of variance, linear regression, multivariate, and nonparametric analysis. The Spearman’s rank correlation coefficient was used to verify similarities in the genotype selection...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Univariate and multivariate methods; Rank correlation; Grain yield; Multi-environment trials.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100001

Phyllochron and leaf appearance rate in oat
Provedor de dados: 53
Autores: Chaves,Gabriela Görgen; Cargnelutti Filho,Alberto; Alves,Bruna Mendonça; Lavezo,André; Wartha,Cleiton Antonio; Uliana,Daniela Barbieri; Pezzini,Rafael Vieira; Kleinpaul,Jéssica Andiara; Neu,Ismael Mario Márcio.
Abstract Phyllochron and leaf appearance rate are both important parameters in the production efficiency of agricultural crops. The objectives of this study were to determine the phyllochron and leaf appearance rate in 4 oat cultivars (Avena sativa L.) in 3 sowing dates and verify the variability of phyllochron and leaf appearance rate among cultivars and sowing dates. The experimental design was the completely randomized with 12 treatments and 20 repetitions. Treatments were formed by the combination of 4 cultivars (URS Charrua, URS Taura, URS Estampa, and URS Corona) and 3 sowing dates in 2014 (April 28, May 28, and July 14). In each plant (repetition) of each treatment, the number of expanded leaves (NEL) was counted 3 times per week from the first leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa L.; Plant development; Thermal time; Leaf emission.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100073

Escurecimento da polpa em pera ‘Rocha’ influenciado pela composição mineral do fruto e condições de atmosfera controlada
Provedor de dados: 53
Autores: Martin,Mariuccia Schlichting De; Steffens,Cristiano André; Amarante,Cassandro Vidal Talamini do; Rodrigues,Marília Farias; Heinzen,Angélica Schmitz; Brackmann,Auri.
RESUMO O objetivo deste trabalho foi avaliar o efeito de condições de armazenamento em atmosfera controlada (AC) e da composição mineral do fruto sobre ocorrência de escurecimento da polpa em pera ‘Rocha’. Os frutos foram armazenados sob diferentes condições de AC: 0,5 kPa O2 + &lt; 0,03 kPa CO2; 1,0 kPa O2 + &lt; 0,03 kPa CO2; 1,0 kPa O2 + 1,0 kPa CO2; 1,0 kPa O2 + 2,0 kPa CO2 e 1,0 kPa O2 + 3,0 kPa C2. Os frutos foram avaliados quanto à incidência e severidade de escurecimento da polpa após 9 meses de armazenamento (−0,5 ± 0,1 °C e UR de 96 ± 2%). Posteriormente, frutos com e sem a presença do distúrbio foram avaliados quanto às concentrações de Ca, Mg, K, N e as relações K/Ca, Mg/Ca e N/Ca. O armazenamento sob 1,0 kPa O2 + 3,0 kPa CO2 proporcionou aos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus communis; Análise canônica discriminante; Armazenamento; Deficiência de cálcio; Distúrbio fisiológico.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200318

Hyperspectral remote sensing to assess the water status, biomass, and yield of maize cultivars under salinity and water stress
Provedor de dados: 53
Autores: Elsayed,Salah; Darwish,Waleed.
ABSTRACT Spectral remote sensing offers the potential to provide more information for making better-informed management decisions at the crop canopy level in real time. In contrast, the traditional methods for irrigation management are generally time-consuming, and numerous observations are required to characterize them. The aim of this study was to investigate the suitability of hyperspectral reflectance measurements of remote sensing technique for salinity and water stress condition. For this, the spectral indices of 5 maize cultivars were tested to assess canopy water content (CWC), canopy water mass (CWM), biomass fresh weight (BFW), biomass dry weight (BDW), cob yield (CY), and grain yield (GY) under full irrigation, full irrigation with salinity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigation; Precision agriculture; Precision phenotyping; Spectral indices.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100062

Morphological analysis and DNA methylation in Conyza bonariensis L. cronquist (Asteraceae) phenotypes
Provedor de dados: 53
Autores: Paula,Juliana Maria de; Pinto-Maglio,Cecília Alzira Ferreira; Pinto,Luciana Rossini.
ABSTRACT The species Conyza bonariensis (L.) cause losses in agriculture due to their invasive capacity and resistance to herbicides like glyphosate. The species of this genus exhibit phenotypic plasticity, which complicates their identification and characterization. Thus, experiments were performed with 2 extreme C. bonariensis phenotypes (called broad leaf and narrow leaf) in greenhouse conditions and in the laboratory, in order to verify if the morphological differences among these phenotypes are a genetic character or result from environmental effects. In addition to the comparative morphological analysis, assessment of DNA methylation profile was performed to detect the occurrence, or not, of differences in the epigenetic level. The morphological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phenotypic plasticity; Conyza bonariensis; Resistance; Weeds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400480

Sistemas de preparo do solo para o cultivo da batata-doce
Provedor de dados: 53
Autores: Rós,Amarílis Beraldo.
RESUMO É crescente a adoção de preparos reduzidos do solo e de plantio direto; no entanto, estudos em solos cultivados com raízes e tubérculos são escassos e apresentam resultados controversos. Este trabalho teve por objetivo avaliar o impacto de sistemas de preparo em propriedades físicas de um Argissolo Vermelho-Amarelo, bem como a produtividade e o formato de raízes tuberosas de batata-doce cultivada nesse solo. Foi instalado experimento em blocos ao acaso, em esquema de parcelas subdivididas. As parcelas corresponderam aos tratamentos: preparo com aração e gradagem (PAG), preparo com aração, gradagem e confecção de leira (PAG + L), confecção de leiras sem revolvimento prévio do solo (Leira), preparo reduzido (PR) e preparo reduzido com palha...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ipomoea batatas; Densidade do solo; Resistência do solo; Vegetação nativa; Produtividade.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100113

Resistance to Dichelops melacanthus (Hemiptera: Pentatomidae) in soybean genotypes of different maturity groups
Provedor de dados: 53
Autores: Canassa,Vinícius Fernandes; Baldin,Edson Luiz Lopes; Bentivenha,José Paulo Franco; Pannuti,Luiz Eduardo da Rocha; Lourenção,André Luiz.
ABSTRACT Some species of pentatomids stink bugs have global economic importance, damaging various plant species during the vegetative and reproductive phases. Dichelops melacanthus (Dallas) (Hemiptera: Pentatomidae), known as the green-belly stink bug, is part of the soybean stink bug complex in Brazil and has increasing importance in crops,with potential to reduce crop yield. This polyphagous stink bug has been registered in 29 plant species belonging to 10 plant families which include cultivated and non-cultivated plants. Plant resistance is a valuable tool in integrated pest management and may reduce insect populations below economic injury level. This study characterized the resistance of 17 soybean genotypes to the green-belly stink bug. All of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: [Glycine max (L.) Merrill]; Host plant resistance; Greenbelly stink bug.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200257

First report of mixed infection by Pseudomonas syringae pathovars garcae and tabaci on coffee plantations
Provedor de dados: 53
Autores: Rodrigues,Lucas Mateus Rivero; Sera,Gustavo Hiroshi; Guerreiro Filho,Oliveiro; Beriam,Luis Otavio Saggion; Almeida,Irene Maria Gatti de.
ABSTRACT The bacterial-halo-blight (Pseudomonas syringae pv. garcae) is disseminated by the main coffee areas in the producing states of Brazil. On the other hand, the disease bacterial-leaf-spot (Pseudomonas syringae pv. tabaci) was reported only once in coffee seedlings in a sample collected in the State of São Paulo. In mid-2015, samples of coffee leaves with symptoms of foliar lesions surrounded by yellow halo, were collected in coffee plantations in the State of Paraná and fluorescent bacteria producing or not brown pigment in culture medium were isolated and determined as belonging to the Group I of P. syringae. Through biochemical, serological and pathogenicity tests, the pathogens were identified as P. syringae pv. garcae and P. syringae pv....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Bacterial-halo-blight; Bacterial-leaf-spot.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400543

Resistance of Botrytis cinerea to fungicides controlling gray mold on strawberry in Brazil
Provedor de dados: 53
Autores: Lopes,Ueder Pedro; Zambolim,Laércio; Capobiango,Nayara Pereira; Gracia,Nicolas Arturo Osorio; Freitas-Lopes,Rejane Livramento.
ABSTRACT The aim of this study was to evaluate the resistance of Botrytis cinerea to the fungicides currently used for its control in Brazil. Isolates of the fungus were collected from different strawberry-producing fields in the states of Espírito Santo, Minas Gerais, and São Paulo, Brazil. First, a total of 183 isolates were identified at the species level using specific primers for the glyceraldehyde-3-phosphate dehydrogenase (G3PDH) gene. The isolates were grown on potato dextrose agar (PDA) containing the fungicides procymidone, iprodione, and thiophanate-methyl in different concentrations: 0.0 (control), 0.1; 1.0; 10.0; 100.0 and 1,000.0 μg∙mL−1. The percentage of mycelial growth inhibition was used to determine the effective concentration of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragaria x ananassa; Chemical control; Dicarboxamides; Methyl benzimidazole carbamate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200266

Expression analysis of three immune genes Interferon-gamma, Mx and Interferon regulatory factor-1 of Japanese flounder ( Paralichthys olivaceus )
Provedor de dados: 52
Autores: Zhang,Feng; Qiu,Xuemei; Liu,Yang; Wang,Juan; Li,Xipeng; Wang,Xiuli.
ABSTRACT IFN-γ (Interferon-gamma), Mx and IRF-1 (Interferon regulatory factor-1) are main immune-related genes and they play important roles in the innate immune system of vertebrates. In this study, the expression level of the three immune-related genes in twelve tissues of normal adult Japanese flounder was detected using semi-quantitative RT-PCR. Thirteen time points (3h, 6h, 9h, 12h, 24h, 36h, 48h, 60h, 72h, 84h, 96h, 108h, 120h) were selected to analyze the expression of IFN-γ, Mx and IRF-1 in spleen, head kidney, liver of Japanese flounder infected with Lipopolysaccharide (LPS). The Japanese flounder IFN-γ, Mx and IRF-1 genes were differently expressed in these tissues and had high expression levels in classical fish immune organs like spleen and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Interferon-gamma; Mx; Interferon regulatory factor-1; Paralichthys olivaceus; Tissue expression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100300

Biotic Contamination and Possible Ways of Sterilization: A Review with Reference to Bamboo Micropropagation.
Provedor de dados: 52
Autores: Ray,Syandan Sinha; Ali,Nasim.
ABSTRACT Multipurpose use of bamboo in rural life makes it as poor man’s timber in Asian countries. Deforestation and industrialization leads to destruction of natural forest. To replenish, a rapid plantation of bamboo could be one of the possible solutions. Bamboo is propagated mainly by vegetative methods though it is not suitable for large scale plantation because of several limitations. Micropropagation is gaining importance for large scale propagation because of its capability in raising huge number of true to type propagules in a limited space in very short span of time. Like any other plant, the chief constraint of bamboo micropropagtion is in vitro contamination arises from several sources including explants. Most of the contaminants are reduced by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biotic contamination; Sterilization; Bamboo; Micropropagation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100207

Performance of Soybean Seedlings Upon Nutrient Application by Seed Coating
Provedor de dados: 52
Autores: Rufino,Cassyo de Araújo; Tavares,Lizandro Ciciliano; Martín-Ramos,Pablo; Fernandes-Vieira,Jucilayne; Abreu Júnior,José de Souza; Silva,Fábio Júnior Araújo; Fernandes-Correa,Marciabela; Martín-Gil,Jesús.
ABSTRACT The aim of this study was to evaluate the effect of different seed coatings consisting of various combinations of three nutrients (calcium, magnesium and silicon) on two soybean cultivars (BRS 243 RR and CD 233 RR). Dolomitic limestone and aluminum silicate were chosen as the nutrient sources. Leaf area, plant height, shoots dry matter, crop growth rate, relative growth rate and net assimilation rate were the studied variables, evincing that the seed coating that comprised calcium, magnesium and silicon led to better performance in terms of growth rates 30 days after emergence. Significant differences in the response to the seed coatings were also observed between the two studied soybean genotypes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max (L.) Merr.; Growth rate; Leaf area; Micronutrients; Seed treatment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100500

Phenolic Content and Biomolecule Oxidation Protective Activity of Globularia alypum Extracts
Provedor de dados: 52
Autores: Bouriche,Hamama; Kada,Seoussen; Senator,Abderrahmane; demirtas,Ibrahim; Ozen,Tevfik; Toptanci,Bircan Çeken; Kizil,Goksel; Kizil,Murat.
ABSTRACT The protective activity of methanolic (Met E) and aqueous (Aq E) extracts of Globularia alypum L. (G. alypum) against DNA, lipid and protein oxidative damage was investigated. Moreover, the scavenging, chelating, and reducing power activities of the extracts were also evaluated. Phytochemical analysis was performed to determine phenolic compounds. Results showed that Met E and Aq E were rich in phenolic compounds, and were able to scavenge DPPH˙ with IC50 values of 48.61 µg/mL and 51.97 µg/mL, respectively. In addition, both extracts were able to chelate ferrous ions. At 300 μg/mL, the chelating activity was 97.53% and 91.02%, respectively. The reducing power of these extracts was also remarkable and concentration dependent. At 100 µg/mL, both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidants; DNA damage; Globularia alypum; Lipid peroxidation; Protein oxidation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100422

The Influence of Stirring Speed, Temperature and Initial Nitrogen Concentration on Specific Anammox Activity
Provedor de dados: 52
Autores: Martins,Tiago H.; Souza,Theo S.O.; Varesche,Maria Bernadete Amâncio.
ABSTRACT This study evaluates the influence of initial nitrogen concentration, temperature and stirring speed on specific anammox activity (SAA). The biomass was tested in single batch reactors with different initial nitrogen concentrations (Assay 1) ranging from 60 to 140 mg Ntotal/L in equimolar ratio (NO2--N/NH4+-N) and in another test to 67.3 mg NH4+-N/L and 92.2 mg NO2--N/L (close to anammox stoichiometric ratio). The anammox biomass was also tested in single batch at different temperatures (from 20 to 37° C) to determine the short-term effects on SAA (Assay 2). In the third assay the stirring speed ranged from 50 to 150 rpm in a sequencing batch reactor (SBR) at 37 ºC. SAA was affected by the stoichiometric molar ratio but not by equimolar initial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SBR; Ammonium; Nitrite; Specific anammox activity; Anammox.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100453

Hepatoprotective Role of α-Lipoic acid and Thymoquinone in Acetaminophen- Induced Liver Injury: Down-Regulation of COX-2 and flt-1 Expression
Provedor de dados: 52
Autores: Al-Rasheed,Nawal M.; Fadda,Laila; Al-Rasheed,Nouf M.; Hasan,Iman H.; Ali,Hanaa M.; Al-Fayez,Musaed; Mohamad,Raeesa A.
ABSTRACT Acetaminophen (APAP) is a widely-used analgesic, while toxic doses of which induce liver injury. Inducible cyclooxygenase-2 (COX-2) is derived prostaglandins which play an anti-inflammatory role in acetaminophen-induced hepatotoxicity. Selective activation of vascular endothelial growth factor (VEGFR1, flt -1) on endothelial cells increased mRNA levels of hepatocyte mitogens (IL-6) and hepatocyte growth factor leading to prosurvival effects on hepatocytes. The aim of this study was to compare the hepatoprotective effect of N-acetylcysteine (NAC; the antidote for APAP) with that of α-Lipoic acid (ALA) and/or Thymoquinone (THQ) either alone or in combination on liver injury induced by APAP. APAP administration elevated most of the previously...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetaminophen; Α-Lipoic acid; Thymoquinone; Cyclooxygenase-2.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100427

Radiation-induced Changes in the Electrophoretic Profile of Serum Albumin
Provedor de dados: 52
Autores: Lima,Celso Vieira; Campos,Tarcisio Passos Ribeiro.
ABSTRACT Albumin protein profiles were investigated in electrophoresis system in relation to the whole body exposition to the radiation. Two groups of rats Wistar were set up as the control (CG) and the irradiated one (IG). The IG was exposed to Co-60 at a dose of 5 Gy. After a 72-hour exposition, 300 μL of blood was collected in the inferior vena cava, renal, jugular, hepatic, and pulmonary veins and the serum separated. The albumin protein was identified by vertical electrophoresis in acrylamide Commassi blue or silver stained. The calibration procedure was applied to albumin samples with well-known concentrations. The mathematical correlation was developed involving electrophoretic parameters of band intensities and sizes from gel representation,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Serum protein; Rats; Radiation; Albumin; Electrophoresis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100444

A Mechanism Study of NMDAR1 in A Rat Alzheimer Disease (AD) Model
Provedor de dados: 52
Autores: Peng,Tianzhong; Huang,Xuedi; Hu,Suifa; Xie,Gui; Zhou,Cheng; Xiong,Jia; Liu,Rui.
ABSTRACT This study aimed to investigate the expression and mechanism of N- methyl -D- aspartate receptor 1 (NMDAR1) in the pathogenesis of Alzheimer disease (AD). Eighty adult Wistar rats were randomly divided into 4 groups (n=20 each) to receive an injection of 0, 5, 7 and 10 μl of 1 μg/μl amyloid-β 42 (Aβ1-42) in the hippocampus. Twenty rats in normal control group were injected with equal volume of saline. After 10 days, the hippocampus was isolated from 5 randomly selected rats in each group. The NMDAR1 protein and mRNA expression was determined by immunohistochemical staining and qRT-PCR. The aquaporin-1 (AQP-1) mRNA expression was also measured by qRT-PCR. We found that both NMDAR1 and AQP-1 expression in Aβ1-42 groups was increased in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: NMDAR1; Alzheimer disease; Aquaporin; AQP-1.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100435

Detection of Genetic Relationship in the Tree of Life of Some Quail Through Molecular Markers Analyses
Provedor de dados: 52
Autores: Deef,Lamiaa Elsayed Mokhtar.
ABSTRACT  Quail is an important and interesting group of galliform birds. The Common quail (Coturnix coturnix); the Japanese quail (Coturnix japonica); the Panda quail (Coturnix japonica); the Dotted white quail (Coturnix japonica) and the Bobwhite quail (Colinus virginianus) were used in this study. PCR-RFLP and SDS-proteins were performed to reveal the genetic characterization and genetic relationship of the studied quails. Analysis of fragments generated by digestion of PCR product with restriction enzyme NlaIII recorded highly polymorphic restriction profiles. There is a wide intraspecific COI, SEMA3E and TLX genes variability among the studied quails. Protein bands varied from10 to 18 between quails with minimum number of bands were in the Dotted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; PCR; Quail; SDS-PAGE; Galliformes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100425

Genome-wide Identiﬁcation, Classiﬁcation and Expression Analysis of the Mildew Resistance Locus O ( MLO ) Gene Family in Sweet Orange ( Citrus sinensis )
Provedor de dados: 52
Autores: Liu,Li-Ping; Qu,Jin-Wang; Yi,Xiao-Qu; Huang,Huan-Huan.
ABSTRACT Mildew resistance Locus O (MLO), a gene family specific to plants, plays significant roles in the resistance to powdery mildew (PM) and response to a variety of abiotic stresses, plant growth and development. Despite their importance as barley, rice, wheat, few studies are reported in dicots except Arabidopsis; no global analysis has been performed in the burgeoning model fruit plant sweet orange (Citrus sinensis). The recent release of the genome sequences of C. sinensis provides an opportunity to conduct a comprehensive overview the evolution and features of the MLO gene family in sweet orange. In this study, amount to 14 members of the Citrus sinensis MLO gene (CisMLO) family according to their gene structures, conserved motifs, and similitude...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; MLO gene family; Powdery mildew; Abiotic stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100426

Assessment of the Toxicity of Sub-chronic Low and High Doses of the Bio-insecticide Spinosad on the Liver, Kidney and the Cerebellum in Male Albino Mice
Provedor de dados: 52
Autores: El-Naggar,Sabry A; Eltantawi,Hala; Ibrahim,Mahrous A; Alm-Eldeen,Abeer.
ABSTRACT Spinosad (SPD) is a highly selective insect control product. However, it was reported that SPD has toxicity toward other non-target organisms. This study was conducted to address the toxic effect of two sub-chronic low and high doses; 35 and 350 mg/kg SPD on some biochemical, histological and immunohistochemical parameters of the liver, kidney and cerebellum. Thirty-six male Swiss mice were divided into three groups of 12 mice each; first group (G1) served as a control, second group (G2) received a low sub-chronic dose of SPD that is equal to 35 mg/kg, and third group (G3) received a high sub-chronic dose of SPD that is equal to 350 mg/kg. The results showed that mice which were received 350 mg/kg SPD showed a significant decrease in the body...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bio-insecticide; Spinosad; Toxicity; Sub-chronic; Biochemical; Histological; Immunohistochemical; Alterations.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100306

Preventive Effects of Ellagic Acid on Nucleus Tractus Solitarius Electrical Activity and Oxidative Stress Altered by Cerebral Global Ischemia/Reperfusion in Rat
Provedor de dados: 52
Autores: Nejad,Khojasteh Hoseiny; Sarkaki,Alireza; Dianat,Mahin; Farbood,Yaghoob; Badavi,Mohammad; Gharib-Naseri,Mohammad Kazem.
ABSTRACT Cerebral ischemia commonly occurs when the blood flow to the entire brain or some part of the brain is disrupted. Global cerebral ischemia attenuates the nucleus tractus solitaries (NTS) EEG rhythm, increases the free radicals production and brain inflammation. Ellagic acid (EA) has antioxidative and anti-inflammatory effects against neural damages. The aim of this study was to evaluate the role of ellagic acid on EEG power in the global cerebral ischemia.Rats were divided into four groups: SO (sham) received normal saline, EA+SO, I/R (normal saline + ischemia/reperfusion), and EA + I/R. EA (100 mg/kg, dissolved in normal saline) or normal saline was administered orally (gavage) for 10 days. Animal underwent to 20 minutes of ischemia followed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ellagic acid; EEG; Antioxidant; Cerebral ischemia/reperfusion; Rat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100446

Phytofabrication of silver nanoparticles using Myriostachya wightiana as a novel bioresource, and evaluation of their biological activities
Provedor de dados: 52
Autores: Vadlapudi,Varahalarao; Amanchy,Ramars.
ABSTRACT  Nanobiotechnology deals with the properties of nanomaterials and their potential uses. Here we report for the first time novel, cost-effective and eco-friendly method for the rapid green synthesis of silver nanoparticles (AgNPs) using leaf extracts of Myriostachya wightiana. The growth of silver nanoparticles was monitored by UV-vis spectroscopy complemented by Zeta potential, dynamic light scattering technique (DLS), Fourier-transform infrared spectroscopy (FTIR), Transmission electron microscope (TEM) and X-ray diffraction (XRD). The surface plasmon resonance (SPR) band found at 434 nm confirmed the reduction of AgNO3 to AgNPs. TEM micrographs revealed that AgNPs are irregular in shape with the size range from 15-65 nm. The functional groups...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nanobiotechnology; Myriostachya wightiana; Tribolium castaneum; Xanthomonas campestris.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100417

Optimized Exon-Exon Junction Library and its Application on Rodents' Brain Transcriptome Analysis
Provedor de dados: 52
Autores: Dou,Tong-Hai; Gao,Yuan; Chen,Cheng-Wen; Xu,Min-Jie; Fu,Mao-Bin; Zhang,Liang; Zhou,Yan.
ABSTRACT  Background: Alternative splicing (AS), which plays an important role in gene expression and functional regulation, has been analyzed on genome-scale by various bioinformatic approaches based on RNA-seq data. Compared with the huge number of studies on mouse, the AS researches approaching the rat, whose genome is intermedia between mouse and human, were still limited. To enrich the knowledge on AS events in rodents' brain, we perfomed a comprehensive analysis on four transcriptome libraries (mouse cerebrum, mouse cerebellum, rat cerebrum, and rat cerebellum), recruiting high-throughput sequencing technology. An optimized exon-exon junction library approach was introduced to adapt the longer RNA-seq reads and to improve mapping efficiency....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: RNA-seq; Exon-exon junction; Alternative splicing; Cerebrum; Cerebellum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100400

Computation of Various Domination Numbers of Rolf Nevanlinna (RNP) Collaboration Graph
Provedor de dados: 52
Autores: V,Yegnanarayanan; B,Logeshwary.
ABSTRACT In this paper, we compute various Domination numbers like Outer Connected Domination (OCD), Doubly Connected Domination (DCD), Fair Domination (FD), Independence Domination (ID), 2-Packing (2-P) for Rolf Nevanlinna Prize Winners's Collaboration Graph (RNPCG).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Outer Connected Domination number; Doubly Connected Domination Number; Fair Domination Number; Independence Domination Number; 2-Packing Number; Rolf Nevanlinna collaboration Graph.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100606

Floating Aquatic Macrophytes Decrease the Methane Concentration in the Water Column of a Tropical Coastal Lagoon: Implications for Methane Oxidation and Emission
Provedor de dados: 52
Autores: Fonseca,André Luiz dos Santos; Marinho,Claudio Cardoso; Esteves,Franscisco de Assis.
ABSTRACT In wetlands, the knowledge accumulated on the role of aquatic plants in the methane cycle focused on emergent macrophytes, to the detriment of other typologies. Herein, we evaluated whether the free-floating macrophyte Salvinia auriculata Aubl. and the floating-leaved macrophyte Eichhornia azurea (Sw.) Kunth. decrease the water column methane concentrations compared to a plant-free surface. We prepared microcosms by inserting an individual of S. auriculata or of E. azurea into chambers filled with lagoon water previously bubbled with CH4. Another set of chambers was incubated only with the prepared water, representing the plant-free surface. Half of the chambers were kept in the dark and half in sunlight to simulate a diel cycle. We observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Methane; Eutrophication; Global warming; Eichhornia azurea; Salvinia auriculata.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100702

Statistical Modelling and Optimization of Fermentation Medium for Lincomycin Production by  Streptomyces lincolnensis Immobilized Cells
Provedor de dados: 52
Autores: Abdelwahed,Nayera A.M.; Gomaa,Eman Zakaria; Hassan,Amira A.
ABSTRACT Response surface methodology was used to optimize lincomycin production by Streptomyces lincolnensis NRRL ISP-5355 in submerged fermentation. Screening of fermentation medium components to find their relative effect on lincomycin production was done using Plackett-Burman design. Malt extract, dextrin, soluble starch and (NH4)2SO4 were the most significant nutrient influenced on lincomycin production. Central composite design was applied to determine optimal concentrations of these factors and the effect of their mutual interactions. The interaction between soluble starch and (NH4)2SO4 was found to enhance the production, whereas malt extract and dextrin exhibited an influence independent from the other two factors. Using this statistical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Optimization; Lincomycin; Streptomyces lincolnensis; Response surface methodology; Immobilization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100405

Apoptosis and Histopathology of the Heart after Renal Ischemia-Reperfusion in Male Rat Running title: Ischemia-Reperfusion Injury
Provedor de dados: 52
Autores: Alihemmati,Alireza; Yousefi,Hadi; Ahmadiasl,Naser; Habibi,Parisa.
ABSTRACT Ischemia-reperfusion injury was seen in strokes, myocardial infarctions, acute kidney injury, mesenteric ischemia, liver and systemic shock. Renal ischemia-reperfusion is more importance in the setting of kidney transplantation that affects distant organs. In this study forty Male Albino Wistar rats (200-250g) were randomly divided in four group (n=10) including control, sham operation group, nephrectomy and IRI group. All rats anesthetized with intraperitoneal injection of ketamine (50 mg/kg) and xylazine (10 mg/kg) and maintained the core body temperature at approximately 37°C. For inducing IRI group, it was performed right nephrectomy, and in continuing, the left kidney pedicle occluded to 45 min via nontraumatic microvascular clamp for making...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Renal Ischemia-reperfusion injury; Glycogen accumulation; Apoptosis; Heart; Rat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100443

Microscopic Studies on Erythrocytes of Channa punctata Exposed to Commercial Grade Lindane
Provedor de dados: 52
Autores: Bhattacharjee,Debasish; Das,Suchismita.
ABSTRACT Light and scanning electron microscopic studies of erythrocytes of Channa punctata exposed to two sublethal doses of lindane over a period of 21 days revealed myriads of anomalies. High frequency of micronucleus appeared progressively in the erythrocyte, ranging from 3.8-7.5%, when monitored weekly for 21 d at 0.25 g/L and 1.0-3.0% at 0.025 g/L lindane. Prominent structural anomalies of erythrocytes included abnormal shapes, vacuolation, membrane invagination and disintegration. At higher dose and at later duration, a unique tendency of abnormal cells to stick together was observed. It could be concluded that commercial formulation of lindane could induce genotoxicity and structural anomalies in the erythrocytes of fish.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: RBC; SEM; Light microscopy; Micronucleus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100449

Decellularized Bovine Articular Cartilage Matrix Reinforced by Carboxylated-SWCNT for Tissue Engineering Application
Provedor de dados: 52
Autores: Mohammadie,Zari Majidi; Parivar,Kazem; Shahri,Nasser Mahdavi; Fereidoni,Masoud; Hayati-Roodbari,Nasim.
ABSTRACT Nanotubes with their unique properties have diversified mechanical and biological applications. Due to similarity of dimensions with extracellular matrix (ECM) elements, these materials are used in designing scaffolds. In this research, Carboxylated Single-Wall Carbon Nanotubes in optimization of decellularized scaffold of bovine articular cartilage was used. At first, the articular cartilage was decellularized. Then the scaffolds were analyzed in: (i) decellularized scaffolds, and (ii) scaffolds plunged into homogenous suspension of nanotubes in distilled water, were smeared with Carboxylated-SWCNT. The tissue rings derived from the rabbit's ear were assembled with reinforced scaffolds and they were placed in a culture media for 15 days. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Articular cartilage; Carboxylated-SWCNT; Extracellular matrix; Natural scaffold; Tissue engineering.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100607

Escherichia Coli: Characteristics of Carbapenem Resistance and Virulence Factors
Provedor de dados: 52
Autores: Candan,Esra Deniz; Aksöz,Nilüfer.
ABSTRACT In this study, fifty Escherichia coli strains were analyzed by multiplex polymerase chain reaction for the genes expressed carbapenemase and virulence factors in order to determine the presence of carbapenemase and nine virulence factors and investigate the association between these two characteristics. When carbapenemase susceptibility was taken into consideration, OXA-48 type carbapenemase was determined for 22% of the total strains. Also, the frequency of virulence gene regions in E.coli infections and virulence gene profiles of these isolates were examined and the frequency of pap, afa, sfa, fimA, iroN, aer, iutA, hly and cnf-1 genes were 24, 38, 20, 84, 28, 90, 92, 10 and 34% respectively. A significant correlation was found between the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbapenemase; Escherichia coli; Multiplex polymerase chain reaction; Virulence factor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100415

Threatening Fishing, the Failure to Pursue Sustainable Development Strategies
Provedor de dados: 52
Autores: Chamanara,Vahid; Kamrani,Ehsan; Zahirinia,Mostafa; Mânez,Kathleen Schwerdtner.
ABSTRACT Increasingly burden of inhabitants growing in coastlines has led to damage in various mangrove expanses. Though these regions play as fish nursery grounds and are actual vital in stock assessments, there is no precise and state-of-the-art accessible information about them. Herein the catch records in the Qeshm island marine protected area (MPA) was studied by means of 11 stake-nets. Thoroughly, 81 specimens of 69 genera and 63 families were caught, which the main stream of them were discards. The salable fish were undeveloped which were frequently undersized in comparison with LM50. For Pampus argenteus as well, lone 15.3% of the caught those remained in the permissible catch size. Henceforward, this catch conformation would be there an impending...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Threatening fishing; Marine protected area; Mangrove; Sustainable development.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100461

Alterations in Biomarkers Associated with Sterility in Pectinophora gossypiella (Saunders) Induced by Gamma Irradiation
Provedor de dados: 52
Autores: Ali,Hanaa Mahmoud; Moustafa,Hemat Zakaria; Sayed,Rehab Mahmoud.
ABSTRACT Nowadays, radiation technology is widely used to produce changes in Biosystems. The goal of this work is to determine the variation induced male Pectinophora gossypiella in gamma-irradiated as pupae using 50Gy and 150Gy. Comparing elements composition and DNA (using RAPD-PCR) between substerile 50Gy and the sterile dose 150Gy in P. gossypiella showed variation between them. Potassium (K) was the most abundant elements in unirradiated and irradiated males followed by magnesium (Mg). The percentage of heavy metals as copper, zinc, and cadmium concurrent with K was directly proportional to the radiation dose. While the percentage of Mg, Phosphorous and calcium decreased as the radiation dose increased. The results also revealed that some extra bands...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pectinophora gossypiella; Gamma rays; RAPD-PCR; Elements; DNA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100436

Polyphenols From Cutch Tree (Acacia catechu Willd.): Normalize In Vitro Oxidative Stress and Exerts Antiproliferative Activity
Provedor de dados: 52
Autores: Kumar,Rakesh; Arora,Rohit; Mahajan,Jyoti; Mahey,Sonia; Arora,Saroj.
ABSTRACT Oxidative stress, being the main cause of most of the human diseases, has always been the highlight of research worldwide. This stress can be overcome by administration of natural polyphenols. The Acacia catechu Willd. has many refrences available in Ayurveda as important disease curative plant. Its leaves are investigated for ameliorating oxidative stress in present work. Leaves of A. catechu were extracted with 80% methanol to get methanol extract (AME). It was assessed for antioxidant activity using DPPH, ABTS, CUPRAC, ferric ion reducing, superoxide scavenging and peroxyl radical scavenging assays. DNA protective activity was also investigated using plasmid nicking assay. Further, antiproliferative activity was determined using MTT assay in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acacia catechu; Antioxidant; Antiproliferative; UHPLC; MTT.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100316

The Evolving Role of Erythropoietin in Lung of Irradiated Rats
Provedor de dados: 52
Autores: Ashry,Omaima Mohamed; Hasan,Hesham Farouk.
ABSTRACT The aim of the present study is to evaluate the possible curative effect of erythropoietin (EPO) on radiation-induced damage to the lung and its renin angiotensin system. EPO (200 U/100g) was i.p. injected to male rats one hour post 6 Gy whole body gamma irradiation. The animals were sacrificed after 14 days post irradiation. Irradiation induced significant drop of haematological values, bone marrow (BM) count, lung oxidative stress markers, glutathione (GSH) and superoxide dismutase(SOD) associated with significant elevation of malondialdehyde (MDA), advanced oxidation protein product (AOPP) and nitric oxide (NO) besides serum inflammatory markers, tumor necrosis factor alpha (TNF-α) and lactate dehydrogenase (LDH). Also serum and lung renin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Erythropoietin; Radiation; Inflammation; Oxidative stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100312

Administration of venlafaxine after chronic methadone detoxification blocks post-depression relapse in rats
Provedor de dados: 52
Autores: Fadaei-Kenarsary,Meysam; Moghaddam,Hadi Fathi; Mansouri,Seyyed Mohammad Taghi; Farbood,Yaghoob.
ABSTRACT Relapse is highly prevalent after detoxification and depression. Due to the advantages of venlafaxine compared with other antidepressants, it is expected that venlafaxine administration may reduce relapse after detoxification and depression. This study aimed to evaluate the effects of venlafaxine on depression-induced relapse to morphine dependence after methadone detoxification. Eighty Sprague-Dawley rats were habituated and conditioned with morphine (10 mg/kg, S.C., for 4 days). After that, primary forced swimming and conditioned place preference (CPP) were tested. They were followed by methadone (70 mg/kg/day, P.O., for 7 days) administration, extinguishing, forced swimming stress (FSS) and administration of venlafaxine (80 mg/kg/day, I.P., for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphine; Methadone; Depression; Relapse; Venlafaxine; Rat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100311

Tropical Fruit Pulps: Processing, Product Standardization and Main Control Parameters for Quality Assurance
Provedor de dados: 52
Autores: Silva,Carlos Eduardo de Farias; Abud,Ana Karla de Souza.
ABSTRACT Fruit pulp is the most basic food product obtained from fresh fruit processing. Fruit pulps can be cold stored for long periods of time, but they also can be used to fabricate juices, ice creams, sweets, jellies and yogurts. The exploitation of tropical fruits has leveraged the entire Brazilian fruit pulp sector due mainly to the high acceptance of their organoleptic properties and remarkable nutritional facts. However, several works published in the last decades have pointed out unfavorable conditions regarding the consumption of tropical fruit pulps. This negative scenario has been associated with unsatisfactory physico-chemical and microbiological parameters of fruits pulps as outcomes of little knowledge and improper management within the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Processing; Standards of identity and quality; Vegetable product; Food safety.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100502

Seasonal abundance of Henosepilachna vigintioctopunctata (Fab.) on Solanum melongena L. and natural occurrence of its two hymenopteran parasitoids
Provedor de dados: 52
Autores: Jamwal,Vishav Vir Singh; Ahmad,Hafeez; Sharma,Ashutosh; Sharma,Devinder.
ABSTRACT The 28-spotted hadda beetle Henosepilachna vigintioctopunctata Fab. (Coleoptera: Coccinellidae) is a poly-phagous pest, commonly infesting solanacious crops including brinjal, Solanum melongena L. Upon its severe infestation on brinjal, it causes considerable damage to the foliage and also to the calyx of fruits. The studies were made to record the seasonal abundance of hadda beetle and identification of its natural enemies present in the region for two consecutive years. The pooled data for two years showed that the maximum number of H. vigintioctopunctata egg clusters on brinjal were recorded in the 27th (0.40 egg cluster/ plant), followed by grub population in 35th (3.78 grubs/ plant), pupae in 33rd and 39th (0.83 pupae/ plant) and adult...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bio-control; Hadda beetle; Pediobius foveolatus; Seasonal incidence; Tetrastichus sp.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100202

Face Image Retrieval of Efficient Sparse Code words and Multiple Attribute in Binning Image
Provedor de dados: 52
Autores: S,Suchitra.
ABSTRACT In photography, face recognition and face retrieval play an important role in many applications such as security, criminology and image forensics. Advancements in face recognition make easier for identity matching of an individual with attributes. Latest development in computer vision technologies enables us to extract facial attributes from the input image and provide similar image results. In this paper, we propose a novel LOP and sparse codewords method to provide similar matching results with respect to input query image. To improve accuracy in image results with input image and dynamic facial attributes, Local octal pattern algorithm [LOP] and Sparse codeword applied in offline and online. The offline and online procedures in face image...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Face Retrieval; LOP; Multiple face attribute; Sparse representation; Indexing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100604

Anti-CD3 Antibody Ameliorates Transfusion-Associated Graft-Versus-Host Disease in a Chemotherapy-Based Mouse Model With Busulfan and Fludarabine
Provedor de dados: 52
Autores: Li,Xiaofan; Song,Qingxiao; Hu1,Wanyu; Wan,Bo; Huang,Qinghua; Li,Qing.
ABSTRACT To establish a transfusion-associated graft-versus-host disease (TA-GVHD) mouse model with busulfan and fludarabine for effective treatment evaluation. BALB/c (H-2d) mice were injected with busulfan (15 mg/kg) and fludarabine (30 mg/kg) twice a day for 4 days. The mice were transfused with 106 T cell-depleted bone marrow (TCD-BM )and cells in different groups 3 days after chemotherapy: syngeneic BALB/c, MHC minor mismatch DBA/2 (H-2d), or MHC major mismatch C57BL/6(H2-b). Recipient BALB/c mice were injected with either blood only or blood+splenocyte. TA-GVHD was monitored in terms of body weight loss, clinical scores, and survival. Dexamethasone (50 mg/kg), cyclophosphamide (50 mg/kg), cyclosporine A (30 mg/kg), and anti-CD3 (1 mg/kg) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transfusion-associated graft-versus-host disease; Fludarabine; Busulfan; Animal model; Major histocompatibility complex.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100305

Enterococcus spp. Resistant to Multiple Antimicrobial Drugs and Determination of Fecal Contamination Levels in Mangrove Oysters (Crassostrea rhizophorae)
Provedor de dados: 52
Autores: Rubião,Cynthia Annes; Franco,Robson Maia; Mesquita,Eliana de Fátima Marques de; Miguel,Marco Antonio Lemos; Cabral,Claudius Couto; Fonseca,Ana Beatriz Monteiro.
ABSTRACT The aim of this study was to determine and compare the Most Probable Number (MPN) of Total Coliforms (TC), Escherichia coli and Enterococcus spp. and to characterize the antimicrobial resistance profiles of Enterococcus spp. isolated from oysters collected in the Barra de Guaratiba Mangrove, Rio de Janeiro, Brazil. The enumeration of E. coli has been used to indicate fecal contamination and hygienic-sanitary conditions of bivalve molluscs. Enterococci are capable to transfer several antimicrobial resistance genes to pathogenic bacteria, including those from Gram-negative group. The oysters were bought from local fishermen and a total of 123 individuals were analyzed. The TC, E. coli and Enterococcus spp. MPN mean were 26,300/100 g, 3,260/100 g and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water pollution; Escherichia coli; Enterococcus spp.; Antimicrobial resistance; Bivalve molluscs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100308

Paper-Based Microfluidics Immunoassay for Detection of Canine Distemper Virus
Provedor de dados: 52
Autores: Mazzu-Nascimento,Thiago; Donofrio,Fabiana Cristina; Bianchi,Beatriz Cutilak; Travensolo,Regiane de Fátima; Souza Junior,João Batista; Moraes,Daniel Angeli; Morbioli,Giorgio Gianini; Segato,Thiago Pinotti; Varanda,Laudemir Carlos; Carrilho,Emanuel.
ABSTRACT Paper-based devices present low-cost and are versatile, making them very attractive for clinical analysis. To manufacture those devices wax patterns are printed on paper surface and upon heating the wax permeates through the entire thickness of the paper, creating hydrophobic barriers that delimit test areas. Antibodies produced in rabbits against canine distemper virus (CDV) were physically adsorbed on the surface of gold nanoparticles (AuNPs) and incubated with CDV viral antigens, forming the immunocomplex. Anti-CDV antibodies were immobilized into the microchannels by physical adsorption, forming the test region. The test solution containing conjugated AuNPs was applied at the bottom of the microchannel and it was eluted with a phosphate buffer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paper-based devices; Wax printing; Point-of-care testing; Gold nanoparticles; Canine distemper virus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100318

Epidemiology Study on P53 (Rs1614984) C&amp;gt;T Mutation in Cigarette Smokers
Provedor de dados: 52
Autores: Ahmad,Dilshad.
ABSTRACT Epidemiology data have established that smoking is a prime threat for the cancers, largely lung cancer. Single-nucleotide polymorphisms (SNPs),P53 SNPs have been found to be associated with the predisposition of different cancers. Their decreased expression is reported in breast and lung cancer patients. p53 (rs1614984) had been reported to be linked with the SNPs found associated with breast cancer. The primary aim of this study to determine the association of p53 variant rs1614984 with the cigarette smokers and smoking related cancers in smokers. Among the smokers, 38% were found with CC genotype, 55% were heterozygous CT and 7% were TT, respectively. The homozygous TT genotype was seen in lower percentage of smokers (7%) when compared to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: P53 (rs1614984); Cigarette smokers; Lung cancer; Single nucleotide polymorphisms (SNPs).
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100304

Enhancement of biohydrogen production from starch processing wastewater and further inside its ecosystem disclosed by 16S rDNA sequencing and FISH
Provedor de dados: 52
Autores: Sutthipattanasomboon,Chonlapin; Wongthanate,Jaruwan.
ABSTRACT Biohydrogen production from starch processing wastewater in this study resulted the highest yield of 61.75 mL H2/g COD at initial pH 7.0, thermophilic temperature, and iron concentration 800 mg Fe/L. The yield was 2-folded higher than the operation at mesophilic temperature or without iron addition. Cell immobilization by addition of biomaterials (BM) could improve the hydrogen yield by 2-folded comparing to the non-addition. BM from plants (loofa sponge) was found producing higher yield than that from animals (silk cocoon), and optimal concentration of BM was 5% (V/V). Furthermore, it was revealed further inside its ecosystem using SEM, 16S rDNA sequencing and FISH. There was found rod-shaped microorganisms of Bacillus cereus, which reported as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biohydrogen production; Starch processing wastewater; Biological supporting materials; Bacillus cereus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100600

Economic Viability of Tomato Cultivation in Organic Farming System
Provedor de dados: 52
Autores: Santos Neto,José dos; Schwan-Estrada,Kátia Regina Freitas; Sena,José Ozinaldo Alves de; Telles,Tiago Santos.
ABSTRACT The aim of the present study is to evaluate the economic viability of tomato cultivation in a system of organic farming, and to compare it with the conventional farming system. The fixed and variable costs of both cultivation systems were calculated, as well as the costs of disease control with the application of alternative products and pesticides. The revenues were computed using commercial production and the direct sales price. The total cost per area was higher in the conventional system, while the cost per plant was greater in the organic system, since it used a lower plant population density. In the conventional system, 2.33 times more was spent on plant management, due to the fact that the number of sprayings was greater than that carried...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sustainability; Solanum lycopersicum; Cymbopogon citratus; Costs of production; Production systems.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100205

Species Diversity and Community Structure of Arthropod Pests and Predators in Flax, Linum Usitatissimum L. from Darjeeling (India)
Provedor de dados: 52
Autores: Pal,Suprakash; Mandal,Rupsanatan; Sarkar,Indrajit; Ghimiray,Tulsi Saran; Sharma,Binay Raj; Roy,Ayon; Roy,Suvendu Kumar; Chakraboorty,Gautam; Mitra,Sabyasachi.
ABSTRACT The species richness and relative abundances of different aboveground plant-dwelling pest and predator species were assessed in flax (Linum usitatissimum L.) ecosystem under mid-hill conditions of eastern Himalayas. The experiment was conducted in winter seasons during 2004-2013 at the Regional Research Station (Hill Zone), Uttar Banga Krishi Viswavidyalaya, Kalimpong, West Bengal, India. Twenty five species of phytophagous arthropods under 13 families were observed belonging to 6 different orders. The gram pod borer, Helicoverpa armigera (Noctuidae: Lepidoptera), aphid, Myzus persicae (Aphididae: Hemiptera), shield bug, Plautia fimbriata (Pentatomidae: Hemiptera) and leaf webber, Nacoleia sp. (Pyralidae: Lepidoptera) were found as the most common...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flax; Pests; Predators; Species richness; Abundance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100459

Evaluation of the Blue Crab Callinectes sapidus Rathbun, 1896 Bycatch in Artisanal Fisheries in Southern Brazil
Provedor de dados: 52
Autores: Ruas,Vinicius Mendes; Becker,Cintia; D’Incao,Fernando.
ABSTRACT   We evaluated the incidental catch of the blue crab in artisanal fisheries through the analysis of sex ratio, catch per unit effort, net positioning, and size in which the capture probability was 50% (P50). The specimens were collected from 2011 to 2013 in the estuary of Patos Lagoon, southern Brazil. The analysis showed a higher occurrence of males. Variations in the catch per unit effort showed greatest abundance values close to the mouth of the estuary. Catch per unit effort was similar when comparing fishing seasons and net positions. P50 indicated a low selectivity of the nets since it varied between studied areas but stayed below the size at first maturity. Catches indicated a greater effort on males, since females migrated to spawn in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachyura; Fishery resource; Patos Lagoon; Fyke net; Estuary.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100448

First report of Epibiont ciliates (Ciliophora: Peritrichia) living on larvae of Leptophlebiidae (Ephemeroptera) from Brazil
Provedor de dados: 52
Autores: Abrahão,Daniel Peroni; Mello,José Leonardo; Gorni,Guilherme; Corbi,Juliano José.
ABSTRACT Epibiosis was understood as a commensalism relation between two or more organisms. However, some studies have shown that epibionts can cause deleterious effects to their host. Here, we reported the first report of epibiosis between protozoa Epibiont ciliates (Ciliophora: Peritrichia) living on larvae of Ephemeroptera from Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epibiosis; Protozoa; Ephemeroptera.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100401

Hepatoprotective Effect of Quercetin Pretreatment Against Paracetamol-Induced Liver Damage and Partial Hepatectomy in Rats
Provedor de dados: 52
Autores: Barros,Pedro Paulo; Silva,Gustavo Henrique da; Gonçalves,Gisele Mara Silva; Oliveira,Jessica Cristiane; Pagnan,Livia Gonçalves; Arco-e-Flexa,Luiza.
ABSTRACT Quercetin has potent antioxidant action and a hepatoprotective role. The aim of this study was to evaluate the hepatoprotective action of quercetin pretreatment in paracetamol-induced liver damage (PILD) and structural injury resulting from partial hepatectomy (PH). In the first model, Wistar rats received oral quercetin (50mg/kg/day) during 8 days. On the 8th day, 3g/kg paracetamol were added. In the second model, the same quercetin dose was given during 7 days and rats were submitted to PH on the 8th day. Blood samples were obtained for determination of enzyme levels. Liver, heart, kidney and lung tissue were also collected for assessment of quercetin biodistribution and/or histological analyses. The results obtained after PILD were more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quercetin; Paracetamol; Partial hepatectomy; ALT; AST.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100302

Harvesting Microalgal Biomass grown in Anaerobic Sewage Treatment Effluent by the Coagulation-Flocculation Method: Effect of pH
Provedor de dados: 52
Autores: Cassini,Servio Tulio; Francisco,Sara Aparecida; Antunes,Paulo Wagner Pereira; Oss,Rodrigo Nunes; Keller,Regina.
ABSTRACT Harvesting is a critical step in microalgal biomass production process for many reasons. Among the existing techniques available for harvesting and dewatering microalgal biomass, recovery from aqueous medium by coagulation-flocculation has been the most economically viable process, althoughit is highly dependent on pH. This study aims to assess alternative coagulants compared to the standard coagulant aluminum sulfate for microalgal biomass recovery from anaerobic effluent of domestic sewage treatment. The effluent quality was also analyzed after biomass recovery. Coagulants represented by modified tannin, cationic starch and aluminum sulfate recovered more than 90% of algae biomass, at concentrations greater than 80 mg/L, in the pH range 7-10....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microalgae; Anaerobic effluent; Coagulation-flocculation; PH.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100700

Evaluation of Genetic Analysis of ESCHERICHIA COLI Isolated from Two Different Environmental Sources: Sewage Water Verses Soiled Bedding Materials of Laboratory Rodents
Provedor de dados: 52
Autores: Kumar,Sharad; Kumar,Mahadeo; Raj,Abhay; Prakash,Jyoti.
ABSTRACT The present investigation details an assessment of genetic relationship of E. coli isolates collected from two different environmental sources viz. sewage water and soiled bedding materials of laboratory rodents. Five sewage water samples were collected from the industrial area of Lucknow city and 5 samples of soiled bedding materials of laboratory animals were collected from Animal facility at CSIR-IITR, Lucknow. For this study Random amplified polymorphic DNA markers (RAPD) was chosen as the molecular fingerprinting method. In this study, 10 RAPD primers were used to evaluate the genetic similarity of E. coli. isolates. The RAPD-PCR fingerprints were analyzed and data were scored as 1, 0 matrix. The generated data were fed on Popgene software...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Escherichia coli; Genetic similarity; RAPD-PCR and Rodents.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100445

The Effects of Different Media, Sucrose Concentrations and Natural Additives on Plantlet Growth of Phalaenopsis Hybrid 'Pink'
Provedor de dados: 52
Autores: Zahara,Meutia; Datta,Avishek; Boonkorkaew,Patchareeya; Mishra,Abha.
ABSTRACT The effects of various sucrose concentrations as carbon source and natural additives in different media on plantlet growth of Phalaenopsis hybrid 'Pink' were studied. Plantlets were cultured on two media (Murashige and Skoog [MS] and Vacin and Went [VW]) supplemented with 0, 10, 20, 30 and 40 g L-1 sucrose either with 0, 10 and 20% (v/v) coconut water (CW) or carrot juice (CJ) as natural additives. After four months of culture, the combination of sucrose and CW supplemented with both media affected plantlet growth where most of the plantlets showed slow growth and survival frequency (0-80%) with increasing concentrations of CW in all sucrose concentrations. However, plantlet growth on both media containing only 20 g L-1 sucrose without CW was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carrot juice; Coconut water; Natural additives; Phalaenopsis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100501

Novel Food Supplements Formulated With Spirulina To Meet Athletes’ Needs
Provedor de dados: 52
Autores: Carvalho,Lisiane Fernandes de; Moreira,Juliana Botelho; Oliveira,Mariana Souza; Costa,Jorge Alberto Vieira.
ABSTRACT The food, training, and health are crucial for a good performance in sports. Intense physical activity takes the athlete to maintain a very unstable balance between energy demand and consumption of nutrients. Spirulina microalga has a nutritional profile that renders it an ideal food supplement, because has high protein content, also contains vitamins, minerals, and pigments. In this context, the study aimed to develop, characterize and evaluate the stability of foods enhanced with Spirulina, which are intended for athletes. In this study, six different supplements were developed (electrolyte replenisher, muscle enhancer, and recovery supplement), without and with Spirulina. The electrolyte replenisher with Spirulina compared to the product...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Athletes; Microalgal biomass; Performance; Supplement.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100315

Effect of Partial and Total Replacement of Inorganic by Organic Microminerals Sources on the Quality of Broiler Carcasses
Provedor de dados: 52
Autores: Lopes,Marcos; Paroul,Natalia; Barbosa,Juliana; Valduga,Eunice; Cansian,Rogerio Luis; Toniazzo,Geciane; Oliveira,Débora.
ABSTRACT Among the nutrients involved in the chicken diet, the microminerals deserve attention as they exert essential functions in the organism. These compounds can be provided in inorganic (traditional) and organic (chelate) forms. In organic form, the micromimerals can attend a new concept related to a better bio-availability. In this sense, the objective of this work was to evaluate the effect of the partial and total substitution of inorganic by organic sources of microminerals on the animal diet, assessing its concentration in the blood and liver after 21 and 40 days and also in the bones after 40 days. Moreover, the effect on the physical-chemical and sensory characteristics of the muscle after 15 days of storage at 4°C was also evaluated. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bio-availability; Broilers; Microminerals; Nutrition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100440

Molecular Characterization of a MYB Protein from Oryza sativa for its Role in Abiotic Stress Tolerance
Provedor de dados: 52
Autores: Deeba,Farah; Sultana,Tasawar; Javaid,Bushra; Mahmood,Tariq; Naqvi,S. M. S.
ABSTRACT The MYB family represents one of the most abundant classes of transcriptional regulators that perform pivotal role under different developmental processes and abiotic stresses. In present study, a MYB gene from Oryza sativa was selected for functional characterization. Bioinformatics analysis revealed that OsMYB1 cDNA encodes R2-R3 type DNA binding domain consisting of 413 amino acids having size of 44 kDa and pI of 6.24. DNA binding domain containing region was cloned and over-expressed in E. coli. Then, the survival of pGEX-OsMYB1 transformed E. coli cells was compared with control plasmid under different concentrations of NaCl, mannitol, high and low temperature. pGEX-OsMYB1 enhanced the survival of cells at high temperature and salinity....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic stress; E. coli; Oryza sativa; OsMYB1; PGEX; Real time qPCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100411

Improving Production of Tacrolimus In Streptomyces Tacrolimicus (ATCC 55098) Through Development of Novel Mutant by Dual Mutagenesis
Provedor de dados: 52
Autores: Singh,Bhanu P; Kumar,Punit; Haque,Shafiul; Jawed,Arshad; Dubey,Kashyap Kumar.
ABSTRACT Tacrolimus is a polyketide macrolide produced by Streptomyces species which is widely used as anti-fibrotic agent and potent immunosuppressant. In this article dual mutagenesis approach using mutagens (NTG+EMS+UV) was used to develop a mutant strain of Streptomyces tacrolimicus (ATCC 55098) for higher tacrolimus production and this strain showed higher tacrolimus production at 82.5 mg/l. Interestingly; addition of L-Lysine (0.2 g/l) into the production medium further enhanced the tacrolimus production to ~102 mg/l at 7-L fed-batch bioreactor. To the best of our knowledge this is the first report mentioning efficient strain development for higher production of tacrolimus using dual mutagenesis. The obtained data presents an impressive model for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immunosuppressant; Macrolide polyketide; Tacrolimus; Mutagenesis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100419

Effects of Replacement of Fishmeal with other Alternative Plant Sources in the Feed on Proximate Composition of Muscle, Liver and Ovary in Tilapia (Oreochromis nioloticus)
Provedor de dados: 52
Autores: Al-Ghanim,Khalid; Al-Thobaiti,Ahmed; Al-Balawi,Humoud F. Alkahem; Ahmed,Zubair; Mahboob,Shahid.
ABSTRACT The major objective of this experiment was to assess the effect of alternate plant protein sources as a replacement for fish meal in feed on the proximate composition of muscle, liver and tissue in Oreochromis niloticus. O. niloticus of average size (average Weight 45.00±1.25 g, total length 13.28±1.42 cm) were stocked in 100 L glass aquarium. Fish were fed with three experimental feeds (A, B and C) and reference commercial feed (D) for 16 weeks. Feed A, B and C was prepared from four different plant sources and fish meal (40 % crude protein). Fish were fed at the rate 3 % of body weight daily. It has been observed that tilapia fed with feed B in which 20 % fish meal was replaced compared to feed C with other plant sources of protein, had shown...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed; Plant sources; Muscle; Liver; Ovary.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100420

Thymbra Spicata Var. Intricata Induces Mesenchymal Stem Cell Proliferation and Osteogenic Differentiation
Provedor de dados: 52
Autores: Mendi,Ayseqül; Yağcı,Beyza Gökçınar; Kızıloğlu,Mustafa; Saraç,Nurdan; Uğur,Aysel; Yılmaz,Derviş; Uçkan,Duygu.
ABSTRACT A natural agent that maintains mesenchymal stem cell (MSCs) viability, promotes osteogenic differentiation while modulating the immunological response could achieve success in regeneration during healing and may also prevent bone resorption and improve regeneration. We aimed to demonstrate that a Thymbra spicata var. intricata extract could induce proliferation, differentiation, and modulate the immune responses of mesenchymal stem cells (MSCs). Using xCELLigence, a real-time monitoring system, we obtained a growth curve of MSCs. A dose of 10 µg/mL was the most efficient concentration for vitality. Osteogenic differentiation and antiinflammatory activities were determined by using an ELISA Kit to detect early and late markers of differentiation....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mesenchymal stem cell; Osteogenic differentiation; T. spicata var. intricata; Bone regeneration.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100310

Growth and Mineral Nutrition of the Chickpea ( Cicer arietinum L.)-Rhizobia Symbiosis under Water Deficit
Provedor de dados: 52
Autores: Khadraji,Ahmed; Mouradi,Mohammed; Ghoulam,Cherki.
ABSTRACT The effect of the water deficit on the fresh and dry weight in the various parts of the plant and on several mineral processes in different symbiotic combinations for the chickpea (Cicer arietinum L.) varieties was studied. The experiment was undertaken in the greenhouse during five weeks.Seedlings were separately inoculated with a suspension of three rhizobia strains and were grown under water deficit (50% of field capacity). Our results showed that the inoculation with the adequate rhizobia may improve the chickpea dry weight by improving the nodules weight, increase NR activity and more K+ accumulation under water deficit. Generally, MC0415 (S1) strain gives the best results, particularly in the dry weight nodules (5% of reduction) and in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reductase; K+/Na+ratio; Tolerance; Water stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100319

Isolation, Characterization, Antioxidant, Antimicrobial and Cytotoxic Effect of Marine Actinomycete, Streptomyces Carpaticus MK-01, against Fish Pathogens
Provedor de dados: 52
Autores: Subramanian,Dharaneedharan; Kim,Min-Sun; Kim,Dong-Hwi; Heo,Moon-Soo.
ABSTRACT Present study aim to evaluate the antimicrobial, antioxidant and cytotoxic potential of crude extract of Marine Streptomyces carpaticus MK-01 isolated from seawater collected from Daejeong-cost of Jeju Island. About 24 actinomycetes strains were isolated and subjected to morphological and molecular analysis that confirmed the isolate as S. carpaticus MK-01. Crude ethyl acetate extract of MK-01 strain showed extensive antibacterial activity against Gram-positive fish pathogenic bacteria namely Streptococcus iniae and S. parauberis with a maximum zone of inhibition (0.92±0.03mm) was recorded against S. parauberis at the minimum extract concentration (3.12µg/ml). The MK-01 ethyl acetate extract shows dose dependant significant increase in antioxidant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Actinomycete; Streptomyces carpaticus MK-01; Antioxidant; Cytotoxicity; Jeju Island.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100437

Biology, Flowering and Fruiting of the Cactus Opuntia spp.: A Review and Some Observations on Three Varieties in Morocco
Provedor de dados: 52
Autores: Arba,Mohamed; Falisse,André; Choukr-Allah,Redouane; Sindic,Marianne.
ABSTRACT The cactus is a succulent plant resistant to droughts. According to the recently reviewed classification, cacti belong to the family of Opuntiaceae Desv. (synon. Cactaceae Juss.) with Opuntia Mill. as the typical genus. This genus is economically the most important in the family, as it includes a group of cactus pear plants which play an important role in the agricultural systems of arid and semi-arid regions. Flowering of the cactus pear fruit is an important determinant of the fruit harvesting period. The goal of this paper is to present the physiology of the cactus pear and to explain in detail the biology of its flowering and fruiting processes. This study is also enriched by our observations on the flowering and fruiting of three varieties of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Opuntia ficus-indica; Phenology; Flowering; Fruiting; Cactus pear.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100434

Oxidative Stress, Chromium-Resistance and Uptake by Fungi: Isolated from Industrial Wastewater
Provedor de dados: 52
Autores: Elahi,Amina; Rehman,Abdul.
ABSTRACT Trichosporon asahii and Rhodotorula mucilaginosa isolated from wastewater effluents were identified as chromium-resistant yeasts. Cr(VI) concentrations at 8 mM and 6 mM were inhibitory for R. mucilaginosa and T. asahii. Remarkably elevated GSH (69.88 ± 10.01) and GSSG (11.24 ± 0.96) was observed under metal stress in T. asahii as compared to R. mucilaginosa GSH (18.95 ± 3.19) and GSSG (3.7 ± 2.74) mM g-1 8 level. Statistical analysis revealed significantly higher GSH/GSSG ratio in both strains. NPSH (29.84 ± 0.54) level in T. asahii was much higher than in R. mucilaginosa (6.05 ± 0.24). Chromate reductase (ChR) was assayed and its activity was optimum at 50°C (pH 6) in T. asahii while R. mucilaginosa showed higher activity at 30°C (pH 7). Activity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichosporon asahii; Rhodotorula mucilaginosa; Wastewater; Resistance; Bioaccumulation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100452

Seasonal dynamics and management of whitefly ( Bemesia tabaci Genn.) in tomato ( Solanum esculentum Mill.)
Provedor de dados: 52
Autores: Sharma,Devinder; Maqbool,Asifa; Jamwal,Vishav Vir Singh; Srivastava,Kuldeep; Sharma,Ashutosh.
ABSTRACT  Studies on seasonal dynamics of white fly (Bemesia tabaci) on tomato (Solanum esculentum var. Pusa Ruby) revealed that it appeared first during the 13th and reached maximum during 21st standard meteorological week. A positive correlation between adult population and abiotic factors viz. temperature (maximum and minimum) and sunshine hours was observed, whereas humidity (maximum and minimum) and rainfall showed a negative correlation with it. Taken together, the key weather parameters studied, caused 89.00 per cent variation in whitefly population (R2 value). Combination of carbofuran (soil application) + imidacloprid (seed treatment ) + imidacloprid (foliar application) proved significantly superior and caused maximum reduction in whitefly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tomato; Whitefly; Insect pest management.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100423

Efficient detection of Frankliniella schultzei (Thysanoptera, Thripidae) by cytochrome oxidase I gene (mtCOI) direct sequencing and real-time PCR
Provedor de dados: 52
Autores: Leão,Evelynne Urzêdo; Spadotti,David Marques de Almeida; Rocha,Kelly Cristina G.; Lima,Élison Fabricio B.; Tavella,Luciana; Turina,Massimo; Krause-Sakate,Renate.
ABSTRACT Identification of Thysanoptera is based mainly on external morphology examination that can be time-consuming and difficult for non taxonomic experts. In this work, we propose a rapid and efficient molecular method to identify Frankliniella schultzei, an important and widespread pest thrips vector of tospoviruses in South America countries. Species-specific primers designed in the mitochondrial cytochrome oxidase I gene (mtCOI) were optimized for detection by conventional PCR and real-time PCR. The primers were tested on immature and adult thrips collected from crops and weeds found in São Paulo State. All samples collected were identified as F. schultzei, indicating the high prevalence of this species as vector of tospoviruses in Brazilian fields.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molecular identification; Real-time PCR; Tospovirus vector.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100454

The Mutagenesis of Lactobacillus Thermophilus for Enhanced L-(+)-Lactic Acid Accumulation Induced by Heavy Ion Irradiation
Provedor de dados: 52
Autores: Hu,Wei; Chen,Jihong; Wu,Qinghua; Li,Wenjian; Liu,Jing; Lu,Dong; Wang,Shuyang.
ABSTRACT Screening promising L. thermophiles with high productivity, high efficiency and strong adaptability are very important in lactic acid industry. For this purpose, 80MeV/u carbon ions were applied to irradiate L. thermophiles. After high-throughput screening, a mutant, named SRZ50, was obtained. Different carbon sources or nitrogen sources were provided to investigate carbon or nitrogen source utilization between mutant SRZ50 and wild type, and different fermentation periods were also chose to study fermentation characteristic between mutant SRZ50 and wild type. The results showed that mutant SRZ50 exhibited the enhanced L-(+)-lactic acid production from wild type. When glucose or fructose was the sole carbon source, the L(+)-lactic acid production...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: L. thermophilus; Mutant; Heavy ion irradiation; L-(+)-lactic acid production; Carbon source; Fermentation characteristic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100504

Epidemiological estimates of Respiratory diseases in the hospital population, Faisalabad, Pakistan.
Provedor de dados: 52
Autores: Sultana,Tayyaba; Afzal,Aqsa; Sultana,Salma; Al-Ghanim,Khalid; Shahid,Tehniat; Jabeen,Zahra; Turab,Nusrat; Ahmed,Z.; Mahboob,Shahid.
ABSTRACT  A cross sectional study was conducted in two types of respiratory patients in hospital population. It was found that tuberculosis (T.B) was the most common type (29.66%) followed by the asthma (28.08%) and chronic obstructive pulmonary disease (COPD) (11.31%). Average age of diagnosis was 42.15 ± 0.65 years and average age at present 47.99 ± 0.70 years. Age group 51-60 years was more prone to this disease (21.13%). Most of the patients were married (80.06%). The highest representation of patients with respiratory diseases was observed in 1st birth order (30.36%) followed by 2nd (26.49%) and 3rd (18.45%), while the lowest was in 10th birth order (0.40%). Tuberculosis, asthma and COPD are the most prevalent types of respiratory diseases....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Respiratory; Age; Sex; Urban; Rural; Income.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100418

First Report of Albinism in the Threatened Gillbacker Sea Catfish Sciades parkeri (Siluriformes, Ariidae)
Provedor de dados: 52
Autores: Andrade,Marcelo C.; Schmid,Kurt; Souza Junior,Oswaldo; Giarrizzo,Tommaso.
ABSTRACT A sexually mature albino specimen of the Gillbacker Sea Catfish species Sciades parkeri (Siluriformes, Ariidae), a vulnerable species, was captured in northern Amazon estuary, State of Pará, Brazil. Herein we present the first record of albinism phenomenon for this species, including the morphometric description of the albino, and a non-abnormal coloring specimen.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Delta; Estuary; Marajó; Vulnerable.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100416

Macauba ( Acrocomia aculeata ) pulp oil quality is negatively affected by drying fruits at 60 ºC
Provedor de dados: 52
Autores: Favaro,Simone Palma; Tapeti,Crissia Fernanda; Miranda,Cesar Heraclides Behling; Ciaconini,Gabrielly; Miyahira,Maria Amélia M; Roscoe,Renato.
ABSTRACT This study aimed to determine if the quality of macauba pulp oil is affected by drying the whole fruits at 60 ºC. Mature fruits were collected at every five days on the ground under 10 palm trees. A mixed batch of 3 kg of whole fruits, with three replications each, was dried in an oven with air circulation for 0, 12, 24, 36 and 48 h at 60 ºC. After every drying time, dried fruits were pulped using an automated device, followed by oil extraction with hexane. Moisture and oil content were determined in the pulp, and the pulp oil quality was analyzed for fatty acid composition, free fatty acids content, peroxide value, molar absorptivity at 232 and 270 nm, refractive index, and total carotene content. The tested temperature was sufficient to decrease...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macauba palm; High oleic; Pulping; Pulp oil; Vegetable oil oxidation; Vegetable oil acidity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100601

Using DNA barcodes to identify forensically important species of Diptera in Espírito Santo State, Brazil
Provedor de dados: 52
Autores: Oliveira,Pablo Viana; Matos,Natan Silva; Klippel,Angélica Hollunder; Oliveira-Costa,Janyra; Careta,Francisco de Paula; Paneto,Greiciane Gaburro.
ABSTRACT Accurate insect specimen identification is usually a crucial first step in a forensic entomological analysis. It is traditionally done by morphological classification using identification keys. However, due to sensibility limitations in the identification of animal species based only on their morphology, new methods have been developed, including species identification by DNA barcodes. The objective of this study was to identify forensically important species of Diptera in Espirito Santo state using DNA barcodes. For this, adult flies were collected in Espirito Santo, Southeast Region of Brazil. After DNA extraction, COI gene was amplified and sequenced. All sequences were matched to BOLD platform and alternatively to GenBank MegaBLAST. As result,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Entomology; COI; BOLD; Forensic; Flies.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100403

Production and Optimization of Killer Toxin in Debaryomyces hansenii Strains
Provedor de dados: 52
Autores: Çorbacı,Cengiz; Uçar,Füsun Bahriye.
ABSTRACT Postharvest diseases of fruits and vegetables result in critical losses of production in worldwide. The losses often are caused by fungi and nowadays, most fungal pathogens are controlled by several strategies such as the use of fungicides. However, most of the fungicides are chemical-based compounds and are dangerous to human health and the nature. Therefore, the discovery of healthy and reliable strategies is crucial to control of fungal pathogens. In the paper, it was aimed to evaluate and characterize yeast isolates previously isolated from dairy products for the production of killer toxin. A total of 18 yeasts have been found to produce antagonistic behavior against susceptible fungal species. All of the yeasts expressing killer character...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Characterization; Killer toxin; Optimization; Postharvest disease; Yeast.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100402

Effects of Yucca schidigera on gas mitigation in livestock production: A review
Provedor de dados: 52
Autores: Sun,Deng-Sheng; Jin,Xiao; Shi,Binlin; Xu,Yuanqing; Yan,Sumei.
ABSTRACT Yucca schidigera extract (YSE) has received much interest in the application of manure deodorization and hazardous gas mitigation in livestock rearing conditions. The main objective of this review article was to summarize the current knowledge regarding YSE towards its gas mitigation from livestock excrement. Saponins have been considered to be vital components of YSE in odor control and gas reduction in intensive farming industry due to their potentials in lowering methane for ruminants and ammonia for monogastric animals. This review article mainly covered the studies in ruminants, especially focused on in vitro environment. It also summarized possible reasons of the conflicting results among studies from the perspective of experimental design...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yucca schidigera; Livestock; Ammonia; Methane; Ruminal fermentation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100701

Effect of nutrients on total lipid content and fatty acids profile of Scenedesmus obliquus
Provedor de dados: 52
Autores: Darki,Behrouz Zarei; Seyfabadi,Jafar; Fayazi,Sima.
ABSTRACT  The effect of nutrients on the total lipid content and fatty acid profile of Scenedesmus obliquus isolated from the south coast of the Caspian Sea was evaluated. The nutritional compositions of the media impacted the growth rate and biomass of S. obliquus that ranged from 0.175 day-1 to 0.209 day-1and 0.92 gr·l-1 to 1.79 gr·l-1, respectively. The alga grew better in the medium which was characterized by higher levels of sodium and trace elements such as Fe, Mn, Mo, and Co and poor in N and P as compared with the other media. The highest level of the total lipid (32%) and the highest values of saturated fatty acids, in particular palmitic acid also were positively correlated with these nutrients. Peaks in polyunsaturated fatty acids (43.7 %),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monounsaturated fatty acids; Polyunsaturated fatty acids; Canonical correspondence analysis; Green algae; Caspian Sea.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100200

Smart Health Surveillance with Automated Database Using Android Mobile Device
Provedor de dados: 52
Autores: Karthi,Anitha; Rajendran,Rajkamal; Mathiarasan,Poomanirajan.
ABSTRACT Smart Health Surveillance system is to measure and display the Electrocardiogram (ECG) and temperature of patient’s body continuously and also to communicate to the doctor. The system measures ECG using infrared sensor and the temperatures at oral and wrist of the patient using temperature sensors. Microcontroller, receives the data from the sensors, displays the same and communicates to the web server automatically. In the existing system, patient’s vital parameters are obtained and the obtained values are entered into database and then uploaded into a web-based server manually. The existing system has no alert signal, during abnormal condition to the surrounding and to the doctor. The proposed system consists of a visualization module of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Android mobile device; Health Surveillance; PIC microcontroller; Wireless sensor network.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100605

Molecular And 3D-Structural Characterization Of Fructose-1,6-Bisphosphate Aldolase Derived From Metroxylon Sagu
Provedor de dados: 52
Autores: Roslan,Hairul Azman; Hossain,Md. Anowar; Gerunsin,Jerry.
ABSTRACT Fructose-1,6-bisphosphate aldolase (FBAld) is an enzyme that catalyzes the cleavage of D-fructose-1,6-phosphate (FBP) to D-glyceraldehyde-3-phosphate (G3P) and dihydroxyacetone phosphate (DHAP), and plays vital role in glycolysis and gluconeogenesis. However, molecular characterization and functional roles of FBAld remain unknown in sago palm. Here we report a modified CTAB-RNA extraction method was developed for the isolation of good quality RNA (RIN&gt;8) from sago leaves and the isolation of FBAld cDNA from sago palm. The isolated sago FBAld (msFBAld) cDNA has total length of 1288 bp with an open reading frame of 1020 bp and a predicted to encode for a protein of 340 amino acid resides. The predicted protein shared a high degree of homology...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metroxylon sagu Fructose-1; 6-bisphospate aldolase 3D-structure stress Schiff's base.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100410

Brain Region Specificity of Mitochondrial Biogenesis and Bioenergetics Response to Nrf2 Knockdown: A Comparison Among Hippocampus, Prefrontal Cortex and Amygdala of Male Rat Brain
Provedor de dados: 52
Autores: Khalifeh,Solmaz; Khodagholi,Fariba; Shaerzadeh,Fatemeh; Ghazvini,Hamed; Zarrindast,Mohammad-Reza; Azizi,Vahid.
ABSTRACT Nuclear factor (erythroid-derived 2)-like 2 (Nrf2) has been identified as the well-known coordinator of intracellular antioxidant defense system. Herein, we aimed to evaluate the effects of Nrf2 silencing on mitochondrial biogenesis markers peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), nuclear respiratory factor-1(NRF-1), mitochondrial transcription factor A (TFAM) and cytochrome c as well activities of two enzymes citrate synthase (CS) and malate dehydrogenase (MDH) in three brain regions hippocampus, amygdala, and prefrontal cortex of male Wistar rats. Small interfering RNA (siRNA) targeting Nrf2 was injected in dorsal third ventricle. Next, western blot analysis and biochemical assays were used to evaluation of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nrf2; Antioxidant defense system; Citrate synthase; Malate dehydrogenase; PGC1-α; TFAM.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100428

Characterization of Some Efficient Cellulase Producing Bacteria Isolated from Pulp and Paper Mill Effluent Contaminated Soil
Provedor de dados: 52
Autores: Reddy,Kondakindi Venkateswar; Vijayalashmi,Tatiparti; Ranjit,Pabbati; Raju,Maddela Naga.
ABSTRACT The wide variety of bacteria in the environment permits screening for more efficient cellulases to help overcome current challenges in biofuels production. This study focuses on the isolation of efficient cellulase producing bacteria found in pulp and paper mill effluent contaminated soil which can be considered for use in large scale biorefining. Four different bacterial strains were isolated and screened for cellulase production by using CMC agar medium. All isolates showed cellulase activity these strains were further characterized by morphological, physiological, biochemical and 16S rRNA gene analyses. These isolates were identified as two Bacillus subtilis sub sps, Bacillus mojavensis and Bacillus cereus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CMC Agar; Cellulolytic Bacteria; Molecular identification; 16S rRNA; Cellulolytic activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100442

Molecular Modeling, Structural Analysis and Evaluation of 1-Deoxy-D-Xylulose-5-Phosphate Reductoisomerase (DXR) as a Putative Drug Target For Theileria Parva
Provedor de dados: 52
Autores: Icen-Taskin,Irmak; Munzuroglu,Omer.
ABSTRACT The apicomplexan parasite Theileria parva, the causative agent of ECF, is an important pathogen affecting both domestic and wild animals, causing major economic losses in the world. Problems such as high cost of drugs, development of resistance, and absence of effective vaccines prevent effective combating of the pathogen. Thus, it is necessary to explore new targets for affordable and higher therapeutic value drugs. 1-Deoxy-D-xylulose-5-phosphate reductoisomerase (DXR) in the non-mevalonate isoprene biosynthesis pathway is vital to the organism and therefore has been selected as a target for developing antitheilerial drugs. In this study, the 3D structure of TpDXR was identified by template-based in silico homology modelling method, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Homology modelling; Theileria parva; 1-Deoxy-D-xylulose-5-phosphate reductoisomerase (DXR); East Coast Fever.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100458

Using Bio-Replicated Forming Technologies to Fabricate Shark-Skin Surface
Provedor de dados: 52
Autores: Xia,Pu; Guangji,Li; Hanlu,Huang; Yunhong,Liu; Ashraf,Muhammad Aqeel.
ABSTRACT Shark-skin surfaces show the non-smoothness characteristics due to the presence of riblet structures. In this work, biomimetic shark-skins were prepared by means of different bio-replicated forming techniques. These techniques include the PDMS elastomeric stamping method (e.g., PES method) and the PDMS embedded-elastomeric stamping method (e.g., PEES method). The study characterized the fabricated biomimetic surfaces through the use of scanning electron microscopy (SEM) as well as 3D microscope. The accuracy of the two replication routes were compared, which included measuring the surface integrity and dimensional parameters ( s, h ) of the riblet-groove structure. The results show that fresh shark-skin without chemical treatments should be used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Shark skin; Micro-structured; Bio-replicated forming technologies; Embedded-elastomeric stamping; Replication accuracy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100460

Production of Antimicrobial Metabolites by Streptomyces lavendulocolor VHB-9 Isolated from Granite Mines
Provedor de dados: 52
Autores: B.S.S.N,Hima Bindu; Muvva,Vijayalakshmi; Munaganti,Rajesh Kumar; Naragani,Krishna; Konda,Saidulu; Dorigondla,Kumar Reddy.
ABSTRACT The actinobacterial strain Streptomyces lavendulocolor VHB-9 was isolated from granite mine soil samples of Khammam district, Telangana state, India. The strain was identified based on detailed microorphological, cultural and phylogenetic analysis. Bioactive guided isolation of the secondary metabolites of the strain was carried out by growing the strain in optimized medium (0.5% lactose, 0.5% peptone, 0.05% K2HPO4, 0.2% CaCO3 with pH adjusted to 7.0). Separation and purification of the active fractions from the crude ethyl acetate extract was carried out by silica gel column chromatography and resulted in the isolation of two active fractions. Structural elucidation of the two (B2 and B3) active compounds was carried out by FT-IR, Mass and NMR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Granite; Streptomyces lavendulocolor; Spectroscopy; Bis (7-methyloctyl) phthalate; (Z)-3-aminoacrylic acid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100413

Developmental Toxicity of (4S)-2- (4-hydroxy-3-methoxyphenyl) thiazolidine-4-carboxylic acid in Zebrafish ( Danio rerio )
Provedor de dados: 52
Autores: Akbulut,Cansu; Öztürk,Burcu; Genc,Hayriye; Zengin,Mustafa; Yön,Nazan Deniz.
ABSTRACT (4S)-2-(4-hydroxy-3-methoxyphenyl)thiazolidine-4-carboxylic acid is new synthesized substance obtained from cysteine and valine. Thiazolidine derivates have important biological responses so scientists work intensively on these compounds in recent years. It is obvious that thiazolidine contained compounds will be used in future in the pharmaceutical industry to treat important diseases. Median lethal concentrations (LC50) for 48 h and 96 h were found as 1.106±0.052 mM and 0.804mM ± 0.102 respectively. According to LC50, exposure doses were determined as control, 0.4 mM, 0.2 mM and 0.1 mM (4S)-2-(4-hydroxy-3-methoxyphenyl)thiazolidine-4-carboxylic acid. Developmental toxicity and apoptotic features on zebrafish development were evaluated in this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thiazolidine; Toxicity; Development; Zebrafish; Apoptosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100431

Piper gaudichaudianum Kunth: Seasonal Characterization of the Essential Oil Chemical Composition of Leaves and Reproductive Organs
Provedor de dados: 52
Autores: Schindler,Bianca; Heinzmann,Berta Maria.
ABSTRACT This study describes a comparative analysis of the essential oil (EO) chemical composition of leaves and reproductive organs (inflorescences and fruits) of Piper gaudichaudianum during the seasons of a year in order to determine the best collection time and the most suitable plant organ to obtain this extractive. The chemical composition of EO obtained from fresh leaves was compared to the dried ones, to verify if the drying process interferes in the extractive quality. The leaves were collected from a native population of Santa Maria, RS, Brazil, twice in each season, in triplicate, while inflorescences and fruits were sampled when they were present. The EO was obtained by hydrodistillation of the different plant organs for 3 h. The 20 EO samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pariparoba; Plant extraction; Medicinal plant; Post-harvest processing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100603

ICP OES Determination of Contaminant Elements Leached from Food Packaging Films
Provedor de dados: 52
Autores: Santos,Éder José dos; Oliveira,Fernanda Mara Pimentel; Herrmann,Amanda Beatriz; Sturgeon,Ralph Edward.
ABSTRACT  Determination of potential contaminants elements in food packing films arising from contact with acidic aqueous foods was undertaken by inductively coupled plasma optical emission spectrometry (ICP OES) in accordance with DIN EN 1186-1. Test sections from plastic films were totally immersed in 3% w/v CH3COOH used as the food simulant. Testing was conducted under three conditions: (1) 10 days at 40 ºC; (2) 30 min at 70 ºC and 10 days at 40 ºC; and (3) 30 min at 100 ºC and 10 days at 40 ºC. These time and temperature conditions were considered to be the most severe situations likely to be encountered in practice. Several different containers were investigated, including a borosilicate glass beaker, a glass bottle used for food canning, as well as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food packaging; ICP OES; Contaminant elements.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100424

Antioxidant Effects of Biochanin A in Streptozotocin Induced Diabetic Rats
Provedor de dados: 52
Autores: Sadri,Hamideh; Goodarzi,Mohammad Taghi; Salemi,Zahra; Seifi,Morteza.
ABSTRACT Bioflavonoid-containing diets have been reported to be beneficial in diabetes. In the current study, the effect of Biochanin A (BCA) on blood glucose, antioxidant enzyme activities and oxidative stress markers in diabetic rats were investigated. 30 male Wistar rats were divided into five groups. Two of them were selected as control; group1: control (receiving 0.5%DMSO), and group2: Control+BCA (receiving 10 mg/kg.bw BCA). Diabetes was induced in other rats with injection of (55 mg/kg.bw) streptozotocin; group3: diabetic control (receiving 0.5%DMSO), groups 4 and 5 were treated with 10 and 15 mg/kg.bw BCA respectively. After 6 weeks the following results were obtained. Fasting blood glucose (FBG), Triglyceride (TG), total cholesterol (TC), low...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biochanin A; Diabetic rats; Oxidative stress; STZ.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100313

Biosorption of anionic textile dyes from aqueous solution by yeast slurry from brewery
Provedor de dados: 52
Autores: Castro,Ketinny Camargo de; Cossolin,Aline Silva; Reis,Hélen Cristina Oliveira dos; Morais,Eduardo Beraldo de.
ABSTRACT This study investigated the biosorption of the anionic textile dyes: Reactive Red 239 (RR239), Reactive Black B (RBB) and Direct Blue 85 (DB85) according to pH, biomass dosage, contact time and dye concentration onto waste beer yeast slurry. The kinetics and isotherm of the removal of dyes were also studied. The equilibrium of biosorption reaction was reached after 30 min for the reactive dyes and after 60 min for the direct dye. Optimum decolorization was observed at pH 2 and 0.63 g/L of biomass dosage. The kinetic data of the three dyes were better described by the pseudo second-order model. The adsorption process followed the Langmuir isotherm model and the biosorption capacity being estimated to be 152.9, 162.7 and 139.2 mg/g for RR239, RBB...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioadsorptive decolorization; Waste beer yeast slurry; Biosorption kinetics; Biosorption isotherms.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100602

Degradation of monoaromatics by Bacillus pumilus MVSV3
Provedor de dados: 52
Autores: Surendra,Sheeba Varma; Mahalingam,Brinda Lakshmi; Velan,Manickam.
ABSTRACT Monoaromatics, such as benzene, toluene, ethylbenzene and xylene (BTEX), are simple aromatic compound that are highly toxic due to their high solubility nature. Many chemical and physical methods for their degradation and breakup into nontoxic products are available, but still use of microorganism is preferred over these processes. In this present study Bacillus pumilus MVSV3 (Accession number JN089707), a less explored bacteria in the field of BTEX degradation, isolated from petroleum contaminated soil is utilized for BTEX degradation. At optimized conditions the isolate degraded 150 mg/L of BTEX completely within 48 h. GC-MS analysis revealed that the microorganism produces catechol and muconic acid during degradation indicating an ortho pathway...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus pumilus MVSV3; Catechol 1; 2-dioxygenase; Ortho pathway; BTEX.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100408

In Vitro Assessment of Antileishmanial Activity of Natamycin and Nystatin
Provedor de dados: 52
Autores: Sidana,Arushdeep; Negi,Ajeet Kumar; Farooq,Umar.
ABSTRACT The present study was aimed to evaluate the in vitro antileishmanial activity of four different concentrations of natamycin and nystatin by using MTT 3-(4.5-dimethylthiazol-2-yl)-2.5-diphenyl tetrazolium bromide reduction assay. In vitro antileishmanial activity revealed that the IC50 of natamycin (80.49 μg/ml) and nystatin (105.7 μg/ml) was less than that of sodium stibogluconate (127.9 μg/ml), and more than amphotericin B (18.91 μg/ml).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leishmaniasis; Leishmania donovani; Antileishmanial; Natamycin; Nystatin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100301

Diversity of the Potential 2-Methylisoborneol-Producing Genotypes in Thai Strains of Planktothricoides (Cyanobacteria)
Provedor de dados: 52
Autores: Tawong,Wittaya.
ABSTRACT The genus Planktothricoides Suda &amp; Watanabe is considered as a 2-methylisoborneol (MIB) producer, affecting water quality and aquatic animal products worldwide. To date, there is limited information about the diversity of this genus from Thailand. In this study, Thai Planktothricoides strains were isolated from fish ponds and reservoirs in North, Northeast and Central regions for morphological examination, phylogenetic analyses based on 16S rRNA, rbcLX and MIB synthase genes as well as GC/MS/MS analyses. The morphological results and the 16S rRNA and rbcLX phylogenies of Thai Planktothricodes strains enabled them to be designated as Planktothricoides raciborskii. Cell dimensions of Thai strains tested were in 1.86 to 5.96 µm length (L), 2.83...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2-methylisoborneol; Filamentous cyanobacteria; 16S rRNA; MIB synthase; Thailand.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100433

Role of Glutaraldehyde in Imparting Stability to Immobilized β-Galactosidase Systems
Provedor de dados: 52
Autores: Satar,Rukhsana; Jafri,Mohammad Alam; Rasool,Mahmood; Ansari,Shakeel Ahmed.
ABSTRACT This review article highlights the role of glutaraldehyde as a matrix activator/stabilizer in imparting higher operational and thermal stability to β-galactosidase (βG) for biotechnological applications. Glutaraldehyde has been used extensively as a crosslinking agent as well as for functionalization of matrices to immobilize β-galactosidase. Immobilized β-galactosidase systems (IβGS) obtained as a result of glutaraldehyde treatment has been employed to hydrolyze whey and milk lactose in batch reactors, continuous packed-bed and fluidized bed reactors under various operational conditions. Moreover, these IβGS have also been utilized for the production of galactooligosaccharides in food, dairy and fermentation industries. It was observed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-galactosidase; Crosslinking; Glutaraldehyde; Immobilization; Stability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100447

Assessment of Sugarcane Germplasm ( Saccharum spp. complex) Against Red Rot Pathogen Colletotrichum Falcatum
Provedor de dados: 52
Autores: Singh,Atul; Singh,Pratap; Tiwari,A K; Sharma,B L.
ABSTRACT Red rot, caused by Colletotrichum falcatum Went is the most important disease of sugarcane in India inflicting substantial loss to both cane industry and cane growers. To keep in view the importance of red rot disease of sugarcane, 117 accession of sugarcane germplasm including different Saccharum species and Indian and foreign commercial hybrids were tested against red rot with Cf 07, Cf 08 &amp; Cf 09 (national pathotypes) by plug method of inoculation. Out of 117, 6 were found resistant and 12 were moderately resistant against red rot and rest were moderately susceptible/susceptible/highly susceptible. Theses resistance and moderately resistant accession can be further utilize to produce resistance varieties against the most devastating...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sugarcane; Germplasm; Resistance; Red rot; Plug method.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100203

Characteristics and Mechanisms of Biosolubilization of Rock Phosphate by Aspergillus japonicus
Provedor de dados: 52
Autores: Xiao,Chunqiao; Tingting,Liu; Guang,Xu; Ruan,Chi.
ABSTRACT Rock phosphate (RP) is traditionally solubilized by chemical process causing high cost and environmental pollution. To reduce process cost and protect environment, RP solubilization by Aspergillus japonicus was studied and its mechanisms were discussed. Results show that A. japonicus could effectively solubilize RP in NBRIP medium. RP solubilization by A. japonicus included direct and indirect actions of the strain on RP. Cells of A. japonicus attached rapidly to RP surface and the RP surface was seriously corroded by the strain. A. japonicus excreted multiple organic acids, and followed by a significant increase of titratable acidity and decrease of pH in the culture. A positive correlation between content of soluble phosphate and quantity of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosolubilization; Soluble phosphate; Rock phosphate (RP); Aspergillus japonicus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100457

Changes of the Total Lipid and Omega-3 Fatty Acid Contents in two Microalgae Dunaliella Salina and Chlorella Vulgaris Under Salt Stress
Provedor de dados: 52
Autores: Rismani,Sharare; Shariati,Mansour.
ABSTRACT Effect of salt stress on biomass, cell number, contents of total lipid, omega-3 fatty acids, including ALA (Alpha Linolenic Acid), EPA (Eicosapentaenoic Acid) and DHA (Docosahexaenoic Acid) and their biosynthetic pathway intermediates (palmitic acid, stearic acid, oleic acid and linoleic acid) of two microalgae Dunaliella salina and Chlorella vulgaris were investigated. Dilution stress from 1.5 to 0.5 M NaCl and salt stress from 1.5 to 3 M NaCl were incorporated into the D. salina medium. Salt stress of 200 mM NaCl was also applied to C. vulgaris culture. Results indicated that increasing salt concentration resulted in the reduced growth rate of C. vulgaris and substantial increase of the total lipid content in both species. Proper growth rate of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dunaliella; Chlorella; Salt stress; Lipid; Omega-3.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100432

In Vitro Mid-Term Conservation of Acorus calamus L. via Cold Storage of Encapsulated Microrhizome
Provedor de dados: 52
Autores: Quraishi,Afaque; Mehar,Snigdha; Sahu,Durga; Jadhav,Shailesh Kumar.
ABSTRACT In vitro rhizome production, encapsulation and cold storage of Acorus calamus were attempted for its propagation and ‘true-to-type’ conservation. Shoot cultures were initiated using underground rhizome buds, on 6-benzyladenine (BA) containing Murashige and Skoog (MS) medium. Maximum microrhizome production was observed in presence of 33.3 µM BA, on modified MS medium containing 6% sucrose, 100 mg/L citric acid and 1 g/L polyvinyl pyrrolidone-40. Synthetic seeds were produced from regenerated microtubers by encapsulation in calcium alginate beads. These synthetic seeds were stored in complete darkness at 100C temperature for different durations for mid-term conservation. After cold storage, synthetic seeds were re-cultured in vitro, 100% survival...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aromatic plant; Encapsulation; Sweet Flag; Synthetic seeds; Plant tissue culture.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100412

Expression, Purification and Functional Assessment of Smallest Isoform of Human Interleukin-24 in Escherichia coli
Provedor de dados: 52
Autores: Valiyari,Samira; Mahdian,Reza; Salami,Mona; Oloomi,Mana; Golshani,Maryam; Shokrgozar,Mohammad Ali; Bouzari,Saeid.
ABSTRACT Interleukin-24 (IL-24) is a novel tumor-suppressor gene that has different alternative splice isoforms. It has been shown that new smallest isoform of human IL-24 gene, lacking three exons, induces higher levels of cytotoxicity than all the isoforms, indicating shortest isoform of IL-24 may be a new promising anti-cancer agent. In this study, we aimed to provide a reproducible method for recombinant production of the smallest isoform of IL-24 (sIL-24). The Structure of sIL-24 was analyzed using bioinformatics tools (I-TASSER, Prosa, RAMPAGE and SPDBV version 4.1). The DNA sequence encoding sIL-24 was chemically synthesized and sub-cloned into the pET-32a (+) vector for further protein expression in Escherichia coli BL21 (DE3) strain. Upon IPTG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Smallest isoform of IL-24; Thioredoxin; Recombinant production; Anti-cancer agent.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100307

Characterization of Alkaliphilic Bacteria Isolated from Bauxite Residue in the Southern Region of Minas Gerais, Brazil
Provedor de dados: 52
Autores: Nogueira,Elis Watanable; Hayash,Elize Ayumi; Alves,Enne; Lima,Claudio Antônio de Andrade; Adorno,Maria Talarico; Brucha,Gunther.
ABSTRACT The aim of this study was to isolate and characterize bacterial strains from bauxite residue in the southern region of Minas Gerais, Brazil, by 16S rRNA gene sequencing and biochemical assays. Bacillus cohnii, Bacillus pseudofirmus, and Bacillus clarkii were identified among the isolates. The isolates were able to use a wide range of carbon sources and to grow at NaCl concentrations of up to 10%, temperatures from 10 to 40 °C, and pH from 7 to 10.5, producing a wide variety of organic acids. This is the first report on microbial composition of bauxite residue in Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bauxite residue; 16S ribosomal RNA gene; Alkaliphilic bacteria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100406

Immobilization of the Magnetic Nanoparticles with Alkaline Protease Enzyme Produced by Enterococcus hirae and Pseudomonas aeruginosa Isolated from Dairy Effluents
Provedor de dados: 52
Autores: Masi,Chandran; Chandramohan,C.; Ahmed,M.Fazil.
ABSTRACT Protease is an enzyme which has a wide range of applications in various fields. Extracellular protease was produced from Pseudomonas aeruginosa and Enterococcus hirae which were isolated from the effluents of diary industries. Protease immobilized with super paramagnetic nanoparticles was characterized by DLS, XRD and TEM methods in relation to their size and structure. The protease enzyme was bound to magnetic nanoparticles via surface transformation technique including Silica coated magnetic Nano composite, amine and cysteine functioned Nano composite formation. Successful binding of protease onto the particles was confirmed by TEM imaging. The maximal enzyme activity of immobilized protease was determined using universal protease assay and was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protease; Super paramagnetic Nanoparticle; Nano composite; Immobilization; Activity and Stability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100462

Asynchronous Hatching and Extended Parental Care in Aegla schmitti (Decapoda, Anomura)
Provedor de dados: 52
Autores: Adam,Carolina de Lima; Marochi,Murilo; Lacerda,Mariana; Trevisan,Andre; Masunari,Setuko.
ABSTRACT The aim of this study was to describe the behavior of newly-hatched juveniles and maternal care in Aegla schmitti. The experiment was conducted using seven ovigerous females with eggs at different stages of embryonic development and 12 eggs that had been placed in a separate aquarium. We observed asynchronous hatching in all females, with a mean of 66 hatched juveniles per female. The females also exhibited extended maternal care, allowing the juveniles to remain inside their abdominal chamber or on other parts of their body in the first few days after hatching. The juveniles that hatched in a separate aquarium fed on the remaining eggs, despite food being available. The incubation period and number of hatched eggs are highly variable between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacean behavior; Maternal care; Hatching period; Aeglidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100450

Effect of Intermittent Feeding on Gonadal Function in Male And Female NMRI Mice During Chronic Stress
Provedor de dados: 52
Autores: Ehteram,Badri Zarrin; Sahraei,Hedayat; Meftahi,Gholam Hossein; Khosravi,Maryam.
ABSTRACT Stress can inhibit gonadal activity via Hypothalamus-Pituitary-Gonad (HPG) axis activity suppression. In the present study, effects of intermittent feeding (IF) on gonadal function under stress in male and female mice were evaluated. Twenty eight male and twenty eight female mice's were divided into four groups. The control group received adequate food and water without stress. The second group received four days of electric shock without food deprivation. The third group was deprived of food two hours/day for a week, and the fourth group was deprived of food (2 hours/day for seven consecutive days) and then electric foot shock stress was applied to them for four days. Blood samples were collected from all animals for plasma testosterone, estrogen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrogen; Gonad; IL-6; Intermittent Feeding; Stress; Testosterone.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100439

Rhizosphere Bacterial Composition of the Sugar Beet Using SDS-PAGE Methodology
Provedor de dados: 52
Autores: Aeini,Milad; Khodakaramian,Gholam.
ABSTRACT The rhizosphere zone has been defined as the volume of soil directly influenced by the presence of living plant roots or soil compartment influenced by the root. During the growing season of 2014, the rhizobacteria of 23 sugar beet plants sampled from 12 sites in the west and north west of Iran were inventoried. Using a cultivation-dependent approach, a total of 217 bacteria were isolated from the rhizosphere. The bacterial isolates were tentatively grouped and documented based on polyacrylamide gel electrophoresis of whole-cell proteins and were found to represent 43 different protein electrotypes. The majority of the fingerprint types were found only on a single occasion. Fifty-nine percent of the strains belonged to the five bacterial species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizosphere; Sugar beet; SDS-PAGE; Protein fingerprint.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100451

Gonadosomatic index and some hematological parameters in African catfish  Clarias gariepinus (Burchell, 1822) as affected by feed type and temperature level
Provedor de dados: 52
Autores: Al-Deghayem,Waleed A.; Al-Balawi,Hamoud F.; Kandeal,Saleh A.; Suliman,El Amin M.
ABSTRACT The purpose of the current study was to examine the effects of different feeds/nutrients and temperature on the gonadal development of Clarias gariepinus. The gonadosomatic index (GSI) and blood parameters including red blood cell count (RBCs), white blood cell count (WBCs), hemoglobin (Hgb) level, hematocrit (HCT), platelets (PLT) and mean corpuscular volume (MCV) were investigated. Four types of fish feed of 36% protein content [D1(fish meal), D2 (soybean meal), D3 (peameal) and D4 (commercial tilapia feed)] and 3 different levels of temperature (T1(24℃), T2(28℃) and T3(32℃) were tried in this study for a duration of 4 months. The mean values were as follows: female GSI (14.68 ± 4.86), male GSI (0.70 ± 0.32), RBCs x 106(2.45± 0.64), WBCs x...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed; Temperature; Clarias gariepinus; Hematology; GSI.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100404

Functional Genes of Microorganisms, Comprehending the Dynamics of Agricultural Ecosystems
Provedor de dados: 52
Autores: Reali,Catiusca; Pilz Júnior,Harry Luiz; Meile,Jean Christophe; Galindo,Sabine Shorr; Fiuza,Lidia Mariana.
ABSTRACT The microbial composition of different types,in ecosystems (including agro-ecosystems), has been investigated in a rapidly growing number of studies in the past few years. The importance of microorganisms, regarding the maintenance and stability of nutrients in agroecosystems, is a key to maintain the sustainability of a crop. Molecular tools to study microbial communities are possible through many methods such as RISA, DGGE, TGGE, clone libraries, T-RFLP, RAPD, SSCP and more recently NGS (Next-Generation Sequencing). DGGE is widely employed to characterize the diversity and the community dynamics of microorganisms in the environment, making possible to find out specific groups through functional genes, allowing access to data that cannot be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agroecosystems; Functional genes; Bacteria; DGGE; Metagenomics; Microbial ecology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100201

Assessment of Rice Associated Bacterial Ability to Enhance Rice Seed Germination and Rice Growth Promotion
Provedor de dados: 52
Autores: Gholamalizadeh,R.; Khodakaramian,G.; Ebadi,A. A.
ABSTRACT The application of beneficial bacteria has recently been used for sustainable agriculture. In current research, 71 bacterial isolates were obtained from rice plant and the rhizosphere soil of different paddy fields in Guilan province, Iran. After primitive investigation, 40 bacteria with typical predominant characteristics were selected. By PCR-RFLP of their 16S r-DNA gene, 8 Operational Taxonomic Units (OTUs) totally consisted of 33 isolates were obtained. From all of them, 8 isolates were selected for rice seed germination experiment, then, effective isolates were used for pot experiment to evaluate their ability for promoting rice growth. All of them were able to increase rice growth and yield, but in different potential. These tested isolates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice associated bacteria; Plant growth promoting bacteria; PCR-RFLP of 16S r-DNA; IAA production; Phosphate solubilizing bacteria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100204

Coexpression of rumen fungal xylanase and bifunctional cellulase genes in Escherichia coli
Provedor de dados: 52
Autores: Comlekcioglu,Ugur; Gunes,Merva; Altun,Hanifi; Ekiz,Dilek Ozgun; Aygan,Ashabil.
ABSTRACT Rumen fungi inhabit the gastro-intestinal tract of ruminants and the most non-ruminant herbivores. Rumen fungi produce highly active plant cell wall degrading enzymes, therefore they have gained scientific interest. In this study, genes encoding xylanase (xynA-7) and cellulase (celA-5) were amplified from Neocallimastix sp. GMLF7 and Orpinomyces sp. GMLF5, respectively, and expressed in Escherichia coli. XynA-7 was found to be active only on xylan, however CelA-5 had activity both on carboxymethyl cellulose and lichenan. Lichenase activity of CelA-5 was found to be higher than carboxymethyl cellulase activity. The optimal conditions were at pH 6.0 and 40 °C for CelA-5 and at pH 6.5 and 50 °C for XynA-7. A coexpression vector was constructed to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rumen fungi; Xylanase; Cellulase; Coexpression; E. coli.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100407

Biological Synthesis of Selenium Nanoparticles and Evaluation of their Bioavailability
Provedor de dados: 52
Autores: Pouri,Saeedeh; Motamedi,Hossein; Honary,Soheyla; Kazeminezhad,Iraj.
ABSTRACT Nanoparticles due to their unique properties have attracted more attention and their bacterial biosynthesis is more favorable because is environmental friendly and the size and yield of nanoparticles can be optimized. The aim of the present study was biosynthesis of Selenium nanoparticles using Bacillus cereus. For this purpose, bacterial culture was prepared in the presence of sodium selenate solution and incubated (30°C, 24 h). The produced nanoparticles were purified through consequent centrifugation, washing with 0.9% NaCl, sonication, washing with Tris- HCl containing Sodium dodecyl sulfate (SDS) and finally isolation with water- octanol two phase systems. Then using Ultraviolet-Visible spectroscopy, dynamic light scattering (DLS), scaning...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus cereus Green chemistry Selenium; Nanoparticle.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100456

Antifungal Potential of Indigenous Medicinal Plants against Myrothecium Leaf Spot of Bitter Gourd ( Momordica charantia L.)
Provedor de dados: 52
Autores: Abid,Muhammad; Chohan,Sobia; Mehmood,Mirza Abid; Naz,Safina; Naqvi,Syed Atif Hasan.
ABSTRACT  Bitter gourd is of great importance due to its usage against the treatment of numerous ailments in human beings. A comprehensive survey at four localities of Southern Punjab, Pakistan was carried out to determine the severity of Myrothecium leaf spot. Maximum disease severity was at C1 (Chak 11/NP) and least at C2 (Kot Mehtab). Among isolated species Myrothecium roridum was found more prevalent and pathogenic as compared to M. verrucaria. Antifungal activity using solvent extracts of five medicinal plants (Mangifera indica, Melia azedarach, Nicotiana tabacum, Moringa oleifera and Eucalyptus globosum) were evaluated against isolated species by agar well diffusion method at various concentrations (0.01, 0.10, 1.0 and 10.0 µg / mL). N. tabacum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Momordica charantia L.; Secondary compounds; Solvent plant extracts.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100421

Anticandidal effect of endophytic bacteria isolated from Equisetum arvense L. against Candida albicans and Candida glabrata
Provedor de dados: 52
Autores: Das,Gitishree; Patra,Jayanta Kumar; Choi,Jaehyuk; Baek,Kwang-Hyun.
ABSTRACT Equisetum arvense, a fern species possesses a number of pharmaceutical prospective. In the present study, a total of 103 endophytic bacteria isolated from E. arvense and were evaluated for their anticandidal property against five Candida species, two C. albicans, C. glabrata, C. saitoana and C. geochares. Out of them fifty one were identified as per the morphological and molecular characterisation using 16S rRNA gene sequencing and among them, ten promising endophytic bacteria were mentioned in the present study. Among ten endophytic bacteria, Psychrobacillus insolitus and Curtobacterium oceanosedimentum exerted highest anticandidal effect against C. albicans KACC 30062 and C. glabrata KBNO6P00368, with diameter of inhibition zones of 21.30±0.41...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anticandidal effect; Endophytic bacteria; Equisetum arvense; Candida albicans; Candida glabrata.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100455

Odanacatib Inhibits Resistin-induced Hypertrophic H9c2 Cardiomyoblast Cells Through LKB1/AMPK Pathway
Provedor de dados: 52
Autores: Zheng,Xian; Liu,Huzi; Cheng,Guanchang; Luo,Jianwei; Ye,Qunhui; Deng,Yongzhi; Wu,Lin.
ABSTRACT Odanacatib (ODN) is a selective inhibitor of cathepsin K. The cysteine protease cathepsin K has been implicated in cardiac hypertrophy. Resistine is an adipokine which is identified to promote cardiac hypertrophy. Here, we hypothesize that ODN mitigates resistin-induced myocyte hypertrophy. Cell surface area and protein synthesis were measured after treatment with resistin and ODN in H9c2 cells. The expression of cardiomyocyte hypertrophy marker BNP and β-MHC was detected by RT-qPCR. The expression and phosphorylation of AMPK and LKB1 were analyzed with Western blot. Resistin could significantly increase cardiomyocyte cell surface area, protein synthesis, and embryonic gene BNP and β-MHC expression, inhibit phosphorylation of AMPK and LKB1. ODN...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resistin; Odanacatib; LKB1/AMPK pathway; Cardiomyocyte hypertrophy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100309

Access and Intensity of Mechanization: Empirical Evidence of Rice Farmers in Southern Ghana
Provedor de dados: 52
Autores: Kuwornu,John K. M.; Apiors,Emmanuel K.; Kwadzo,George T-M.
ABSTRACT The medium term development plan of Ghana proposed modernization of agriculture to lead the way in transforming the economy. Providing irrigation infrastructure and enhancing farmer access to farm machinery were major interventions proposed. In line with this, the government has been investing in irrigation infrastructure as well as importing farm machinery under various programmes in recent years. This study analyzed access and intensity of mechanization by rice farmers in southern Ghana. The Shai-Osudoku and Ketu North Districts were purposively selected and a total of 360 farmers were randomly sampled from 16 rice growing communities. In general, the results of the descriptive statistics revealed that about 74 % of farmers were still...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mechanization access; Mechanization intensity; Rice farmers; Southern Ghana; Double hurdle model.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100414

Endophytic Fungi as Novel Resources of natural Therapeutics
Provedor de dados: 52
Autores: Rajamanikyam,Maheshwari; Vadlapudi,Varahalarao; amanchy,Ramars; Upadhyayula,Suryanarayana Murty.
ABSTRACT Fungal endophytes constitute a major part of the unexplored fungal diversity. Endophytic fungi (EF) are an important source for novel, potential and active metabolites. Plant-endophyte interaction and endophyte -endophyte interactions study provide insights into mutualism and metabolite production by fungi. Bioactive compounds produced by endophytes main function are helping the host plants to resist external biotic and abiotic stress, which benefit the host survival in return. These organisms mainly consist of members of the Ascomycota, Basidiomycota, Zygomycota and Oomycota. Recently, the genome sequencing technology has emerged as one of the most efficient tools that can provide whole information of a genome in a small period of time....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endophytic fungi; Ascomycota; Natural products; Antidiabetic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100430

Evaluation of Medicinal Values of Gymnopetalum chinense (Lour.) Merr., a Lesser Known Cucurbit from Eastern Ghats of India
Provedor de dados: 52
Autores: Kumar,Sanjeet; Das,Gitishree; Shin,Han-Seung; Kumar,Pradeep; Patra,Jayanta Kumar.
ABSTRACT &gt;The in vitro antimicrobial activity of Gymnopetulum chinense (Cucurbitaceae), a lesser known climber of Eastern Ghats and recently recorded species from Odisha, India was studied against five selected human pathogenic bacteria (Streptococcus mutans, S. pyogenes, Vibrio cholerae, Shigella flexneri and Salmonella typhi), by agar well diffusion (AWD), disc diffusion (DD) and broth dilution methods. Different solvent extracts were prepared from the leaves of G. chinense using various solvents viz. n-hexane, chloroform, methanol, acetone and aqueous. The nomenclature, detailed description and photographs of the plant are provided to facilitate its easy identification. The leaf extract showed presence of phenolic compounds, tannin, saponin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibacterial activity; Gymnopetulum chinense; Cucurbits; Streptococcus pyogenes; Antimicrobial resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100438

Determination of the Effect of the Elimination Diet Applied for Overweight and Obese People with Food Intolerance on Body Composition and Biochemical Parameters
Provedor de dados: 52
Autores: Gubur,Sema.
ABSTRACT Food Intolerance, is a reaction against food, but not immunological manner, and may be confused with real food allergies. In this study, effects of special weight-loss diet together with an elimination diet on body composition and biochemical parameters of overweight and obese people who were diagnosed with food intolerance were investigated. The study group consists of 20 patients in total who were followed-up and treated in Yorktest Turkey Laboratory; who were diagnosed with food intolerance, and whose BMI was &gt; 26kg/m2. Bloodletting for these patients was executed with Lancet from their fingertips, and the blood drawn from these patients was assessed via enzyme-linked immunosorbent assay (ELİSA) method, and food reactions of patients were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food intolerance; Obesity; IgG; Elimination diet; Yeast.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100314

Safety Assessment of a New Pigmented Safflower Seed Coat (A82) by a Feeding Study on Rat
Provedor de dados: 52
Autores: Karami,Soraya; Sabzalian,Mohammad R.; Khorsandi,Layasadat; Rahimmalek,Mehdi.
ABSTRACT Safflower (Carthamus tinctorius L.) is an annual herbaceous plant, cultivated mainly for the seed which is used for edible oil extraction and bird feeding. This study was designed to evaluate the safety of a new pigmented variety of safflower (A82) seeds. The results showed that oral administration of A82 seeds significantly increased the body weight of male rats in a dose-dependent manner (p&lt;0.05). Biochemical tests showed that A82 seeds significantly increased the serum levels of AST (Aspartate aminotransferase) (p&lt;0.05), slightly reduced the serum levels of ALT (Alanine aminotransferase) and significantly reduced ALP (p&lt;0.05) levels in a dose dependent manner. BUN (Blood Urea Nitrogen) and Cr (Creatinine) were not significantly changed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Safflower black seed; Herbal medicine; Food safety; Toxicity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100503

Gene Expression Analyses of HER-2/neu and ESR1 in Patients with Breast Cancer
Provedor de dados: 52
Autores: Nadergoli,Omid Kheyri; Feizi,Mohammad Ali Hosseinpour; Kafil,Hossein Samadi; Pouladi,Nasser; Hosseinzadeh,Ali; Rostamizadeh,Leila; Montazeri,Vahid; Fakhrjou,Ashraf; Sakhinia,Ebrahim; Seifi,Morteza.
ABSTRACT Background: Her-2 and ESR1 genes, that interact in the cell signaling pathway, are the most important molecular markers of breast cancer, which have been amplified or overexpressed in 30% and 70%, respectively. This study was performed to evaluate the gene expression levels of Her-2 and ESR1 genes in tumor cells and its adjacent normal tissue of breast cancer patients and compared them whit clinical-pathological features. Methods: In total, 80 tissue specimens from 40 patients, with an average age of 48.47 years, were examined by Real-time PCR technique, and ultimately evaluated the expression level of Her-2 and ESR1genes. The data were analyzed by REST 2009 V2.0.13 statistical software. Results: HER2 and ESR1 overexpression was identified in 19...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breast Cancer; Her-2/neu; ESR1; Overexpression; Molecular marker; Real-time PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100317

The Nano-Magnetic Dancing of Bacteria Hand-in-Hand with Oxygen
Provedor de dados: 52
Autores: Talib,Ayesha; Khan,Abid Ali; Ahmed,Haroon; Jilani,Ghulam.
ABSTRACT Magnetotactic bacteria are mostly microaerophilic found at the interface between oxic-anoxic zones. We report a magnetotactic bacterial strain isolated from an oil refinery sludge sample that grows aerobically in simple chemical growth medium, 9K. They open a new window of isolation of magnetic nanoparticles through an easy natural living system.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Magnetotactic Bacteria; Bacillus; Aerobic; Magnetosomes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100429

Reviewing Microbial Behaviors in Ecosystems Leading to a Natural Quorum Quenching Occurrence
Provedor de dados: 52
Autores: Zapata,Laura Sierra; Tabarez,Magally Romero; Álvarez,Javier Correa; Escobar,Valeska Villegas.
ABSTRACT Quorum sensing is considered one of the most important discoveries in cell-to-cell communication. Although revealed in Bacteria, it has been identified as well as a mechanism present in the other two domains, Eukaryota and Archaea. This phenomenon consists mainly of an exchange and sensing of "words" produced by each cell: chemical signals known as autoinducers. The process takes places at high cell densities and confined environments, triggering the expression of specific genes that manifest in a determined phenotype. Quorum sensing has a fundamental importance in the organisms' fitness in natural ecosystems since it activates many of the traits needed by cells to survive under specific conditions, and thus a wide variety of chemical signals,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quorum Sensing; Autoinducers; Interference; Degradation; Microbial Ecology; Quorum Quenching.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100409

Fetal Cerebrospinal Fluid Promotes Proliferation and Neural Differentiation of Stromal Mesenchymal Stem Cells Derived from Bone Marrow
Provedor de dados: 52
Autores: Shokohi,Rozmehr; Nabiuni,Mohammad; Moghaddam,Parisa; Irian,Saeed; Miyan,Jaleel A.
ABSTRACT Embryonic cerebrospinal fluid (E-CSF) contains many neurotrophic and growth factors, acts as a growth medium for cortical progenitors, and can modulate proliferation and differentiation of neural stem cells. Mesenchymal stem cells (MSCs) are multipotential stem cells that can differentiate into several types of mesenchymal cells as well as nonmesenchymal cells, such as neural cells. In the present study, the effect of E-CSF on proliferation and neural differentiation of bone marrow mesenchymal stem cells (BM-MSCs) was investigated to test whether E-CSF is capable of driving these cells down the neuronal line. To verify the multipotential characteristics of BM-MSCs, the cells were analyzed for their osteogenic and adipogenic potential. Expression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerebrospinal fluid; Neural differentiation; Proliferation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100441

Application of Next-generation Sequencing in Clinical Molecular Diagnostics
Provedor de dados: 52
Autores: Seifi,Morteza; Ghasemi,Asghar; Raeisi,Sina; Heidarzadeh,Siamak.
ABSTRACT Next-generation sequencing (NGS) is the catch all terms that used to explain several different modern sequencing technologies which let us to sequence nucleic acids much more rapidly and cheaply than the formerly used Sanger sequencing, and as such have revolutionized the study of molecular biology and genomics with excellent resolution and accuracy. Over the past years, many academic companies and institutions have continued technological advances to expand NGS applications from research to the clinic. In this review, the performance and technical features of current NGS platforms were described. Furthermore, advances in the applying of NGS technologies towards the progress of clinical molecular diagnostics were emphasized. General advantages and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioinformatics; Clinical molecular applications; Ethical aspects; Next generation sequencing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100303

Increasing rates of Clostridium difficile infection in Mexican hospitals
Provedor de dados: 55
Autores: Dávila,Laura Palau; Garza-González,Elvira; Rodríguez-Zulueta,Patricia; Morfín-Otero,Rayo; Rodríguez-Noriega,Eduardo; Vilar-Compte,Diana; Rodríguez-Aldama,Juan C.; Camacho-Ortiz,Adrián.
Abstract  Introduction The epidemiology of Clostridium difficile infection (CDI) has changed in the last two decades. There is a lack of information regarding incidence and severity of CDI, especially in the developing world.  Methods This was a retrospective and observational study from four hospitals of three Mexican cities. Patients were diagnosed with CDI when presented with loose stools and had at least one of the following tests positive: toxins assay, real-time PCR, or an endoscopic image compatible with pseudomembranous colitis. CDI was classified according to international guidelines. Demographic and clinical data as well as information regarding total hospital admissions, total length-of-hospital stay, and other variables related to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clostridium difficile; Hospital acquired infections; Hospital diarrhea; Infection rates.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500530

Carbapenem-resistant and cephalosporin-susceptible: a worrisome phenotype among Pseudomonas aeruginosa clinical isolates in Brazil
Provedor de dados: 55
Autores: Campana,Eloiza Helena; Xavier,Danilo Elias; Petrolini,Fernanda Villas-Boas; Cordeiro-Moura,Jhonatha Rodrigo; Araujo,Maria Rita Elmor de; Gales,Ana Cristina.
Abstract The mechanisms involved in the uncommon resistance phenotype, carbapenem resistance and broad-spectrum cephalosporin susceptibility, were investigated in 25 Pseudomonas aeruginosa clinical isolates that exhibited this phenotype, which were recovered from three different hospitals located in São Paulo, Brazil. The antimicrobial susceptibility profile was determined by CLSI broth microdilution. β-lactamase-encoding genes were investigated by PCR followed by DNA sequencing. Carbapenem hydrolysis activity was investigated by spectrophotometer and MALDI-TOF assays. The mRNA transcription level of oprD was assessed by qRT-PCR and the outer membrane proteins profile was evaluated by SDS-PAGE. Genetic relationship among P. aeruginosa isolates was assessed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gram-negative bacilli; Carbapenem resistance; OprD porin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100057

Emergence of colistin resistance in the largest university hospital complex of São Paulo, Brazil, over five years
Provedor de dados: 55
Autores: Rossi,Flávia; Girardello,Raquel; Cury,Ana Paula; Di Gioia,Thais Sabato Romano; Almeida Jr,João Nóbrega de; Duarte,Alberto José da Silva.
Abstract Colistin resistance involving Gram-negative bacilli infections is a challenge for health institutions around of the world. Carbapenem-resistance among these isolates makes colistin the last therapeutic option for this treatment. Colistin resistance among Enterobacteriaceae, Acinetobacter spp., and Pseudomonas spp. was evaluated between 2010 and 2014 years, at Hospital das Clínicas, São Paulo, Brazil. Over five years 1346 (4.0%) colistin resistant Gram-negative bacilli were evaluated. Enterobacteriaceae was the most frequent (86.1%) pathogen isolated, followed by Acinetobacter spp. (7.6%), and Pseudomonas spp. (6.3%). By temporal analysis there was a trend for an increase of colistin resistance among Enterobacteriaceae, but not among...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Colistin-resistant; Polymyxin B-resistant; Enterobacteriaceae; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100098

Does SOFA predict outcomes better than SIRS in Brazilian ICU patients with suspected infection? A retrospective cohort study
Provedor de dados: 55
Autores: Rosa,Regis Goulart; Moraes,Rafael Barberena; Lisboa,Thiago Costa; Schunemann,Daniel Pretto; Teixeira,Cassiano.
ABSTRACT We compared the discriminatory capacity of the sequential organ failure assessment (SOFA) versus the systemic inflammatory response syndrome (SIRS) score for predicting ICU mortality, need for and length of mechanical ventilation, ICU stay, and hospitalization in patients with suspected infection admitted to a mixed Brazilian ICU. We performed a retrospective analysis of a longitudinal ICU database from a tertiary hospital in Southern Brazil. Patients were categorized according to whether they met the criteria for sepsis according to SOFA (variation ≥2 points over the baseline clinical condition) and SIRS (SIRS score ≥2 points). From January 2008 to December 2014, 1487 patients were admitted to the ICU due to suspected infection. SOFA ≥2...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Sepsis; Intensive care unit; Organ dysfunction; Outcomes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600665

Classical and alternative macrophages have impaired function during acute and chronic HIV-1 infection
Provedor de dados: 55
Autores: Galvão-Lima,Leonardo J.; Espíndola,Milena S.; Soares,Luana S.; Zambuzi,Fabiana A.; Cacemiro,Maira; Fontanari,Caroline; Bollela,Valdes R.; Frantz,Fabiani G.
Abstract  Objectives: Three decades after HIV recognition and its association with AIDS development, many advances have emerged – especially related to prevention and treatment. Undoubtedly, the development of Highly Active Antiretroviral Therapy (HAART) dramatically changed the future of the syndrome that we know today. In the present study, we evaluate the impact of Highly Active Antiretroviral Therapy on macrophage function and its relevance to HIV pathogenesis.  Methods: PBMCs were isolated from blood samples and monocytes (CD14+ cells) were purified. Monocyte-Derived Macrophages (MDMs) were activated on classical (MGM-CSF+IFN-γ) or alternative (MIL-4+IL13) patterns using human recombinant cytokines for six days. After this period, Monocyte-Derived...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV-1; Innate immune response; HAART; Macrophages.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100042

Serological survey of Chikungunya virus in Ilorin Metropolis, Nigeria
Provedor de dados: 55
Autores: Kolawole,Olatunji Matthew; Bello,Kizito Eneye; Seriki,Adetola Adebimpe; Irekeola,Ahmad Adebayo.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300365

Identification of Human Bocavirus type 4 in a child asymptomatic for respiratory tract infection and acute gastroenteritis - Goiânia, Goiás, Brazil
Provedor de dados: 55
Autores: Sousa,Teresinha Teixeira de; Almeida,Tâmera Nunes Vieira; Fiaccadori,Fabíola Souza; Souza,Menira; Badr,Kareem Rady; Cardoso,Divina das Dôres de Paula.
Abstract Human Bocavirus (HBoV) has been identified from feces and respiratory samples from cases of both acute gastroenteritis and respiratory illness as well as in asymptomatic individuals. The aim of this study was to detect and characterize HBoV from fecal samples collected from hospitalized children aged less than five years old with no symptoms of respiratory tract infection (RTI) or acute gastroenteritis (AGE). The study involved 119 children and one fecal sample was collected from each participant between 2014 and 2015. HBoV was detected using Nested-PCR, and the viral type identified by genomic sequencing. HBoV-4 was identified from one sample obtained from a hospitalized child with soft tissue tumor of the submandibular region. This is the first...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: HBoV-4; Asymptomatic children; Tumor of the submandibular region.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400472

Antifungal pharmacodynamics: Latin America's perspective
Provedor de dados: 55
Autores: Gonzalez,Javier M.; Rodriguez,Carlos A.; Agudelo,Maria; Zuluaga,Andres F.; Vesga,Omar.
Abstract The current increment of invasive fungal infections and the availability of new broad-spectrum antifungal agents has increased the use of these agents by non-expert practitioners, without an impact on mortality. To improve efficacy while minimizing prescription errors and to reduce the high monetary cost to the health systems, the principles of pharmacokinetics (PK) and pharmacodynamics (PD) are necessary. A systematic review of the PD of antifungals agents was performed aiming at the practicing physician without expertise in this field. The initial section of this review focuses on the general concepts of antimicrobial PD. In vitro studies, fungal susceptibility and antifungal serum concentrations are related with different doses and dosing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antifungal agents; Pharmacology; Pharmacodynamics; Pharmacokinetics; Candidiasis; Aspergillosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100079

Pressure ulcer as a reservoir of multiresistant Gram-negative bacilli: risk factors for colonization and development of bacteremia
Provedor de dados: 55
Autores: Braga,Iolanda A.; Brito,Cristiane S.; Diogo Filho,Augusto; Gontijo Filho,Paulo P.; Ribas,Rosineide M.
Abstract The purpose of this study was to identify the risk factors that predispose patients who are hospitalized with pressure ulcers (PUs) colonized by Gram-negative bacilli (GNB) to develop bacteremia. In addition, we also detected main phenotypes of resistance in infected and uninfected PUs. A prospective cohort study was conducted at the Clinical Hospital of the Federal University of Uberlândia including patients with Stage II or greater PUs, colonized or not with GNB, from August 2009 to July 2010. Infected ulcers were defined based on clinical signs and on positive evaluation of smears of wound material translated by a ratio of polymorphonuclear cells to epithelial cells ≥2:1, after Giemsa staining. A total of 60 patients with Stage II PUs were...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Pressure ulcer; Gram-negative bacilli; Colonization; Bacteremia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200171

Clinical correlates of pp65 antigenemia monitoring in the first months of post kidney transplant in patients undergoing universal prophylaxis or preemptive therapy
Provedor de dados: 55
Autores: Carvalho,Fabiana Rabe; Cosendey,Rachel Ingrid Juliboni; Souza,Cintia Fernandes; Medeiros,Thalia; Menezes,Paulo Alexandre; Silva,Andrea Alice; Almeida,Jorge Reis; Lugon,Jocemir Ronaldo.
Abstract  Introduction: Human cytomegalovirus is a major cause of morbidity in kidney transplant patients.  Objectives: We aimed to study viral replication and serological response in the first months post kidney transplant in patients undergoing universal prophylaxis or preemptive therapy and correlate the findings with the clinical course of Human cytomegalovirus infection.  Patients and methods: Independent from the clinical strategy adopted for managing Human cytomegalovirus infection, prophylaxis versus preemptive therapy, the pp65 antigenemia assay and serological response were assessed on the day of transplantation, and then weekly during the first three months of post-transplant.  Results: From the 32 transplant recipients, 16 were positive for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytomegalovirus; Pp65 antigenemia; Kidney transplant; Universal prophylaxis; Preemptive therapy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100051

Rapid spread of an ongoing outbreak of Zika virus disease in pregnant women in a Mexican hospital
Provedor de dados: 55
Autores: Garza-González,Elvira; Mendoza-Olazarán,Soraya; Roman-Campos,Raúl; Téllez-Marroquín,Ricardo; Saldívar-Rodríguez,Donato; Soria-López,Juan A.; Guzman,Abel; Flores-Treviño,Samantha; Camacho-Ortiz,Adrián.
Abstract In the first nine weeks of implementation of a Zika Virus Preparedness Plan in a Mexican Public Hospital, we cared for 221 pregnant women with any signal or symptom suggesting Zika virus infection and 99 (44.8%) patients were found to be positive for Zika virus.The median age of patients was 25.3 years (range 13-49). Symptoms in PCR-positive patients were rash (91.4%) followed by headache (53.1%), myalgia (46.9%), arthralgia (45.7%), pruritus (35.8%), retroocular pain (29.6%), conjunctivitis (21%), and fever (21%). The women's epidemiologic exposure history indicates local transmission and a community outbreak.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Zika virus disease; Congenital Zika virus syndrome; Microcephaly.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500554

Clinical and epidemiological characteristics associated with unfavorable tuberculosis treatment outcomes in TB-HIV co-infected patients in Brazil: a hierarchical polytomous analysis
Provedor de dados: 55
Autores: Prado,Thiago Nascimento do; Rajan,Jayant V.; Miranda,Angélica Espinosa; Dias,Elias dos Santos; Cosme,Lorrayne Beliqui; Possuelo,Lia Gonçalves; Sanchez,Mauro N.; Golub,Jonathan E.; Riley,Lee W.; Maciel,Ethel Leonor.
Abstract  Background: TB patients co-infected with HIV have worse treatment outcomes than non-coinfected patients. How clinical characteristics of TB and socioeconomic characteristics influence these outcomes is poorly understood. Here, we use polytomous regression analysis to identify clinical and epidemiological characteristics associated with unfavorable treatment outcomes among TB-HIV co-infected patients in Brazil.  Methods: TB-HIV cases reported in the Brazilian information system (SINAN) between January 1, 2001 and December 31, 2011 were identified and categorized by TB treatment outcome (cure, default, death, and development of MDR TB). We modeled treatment outcome as a function of clinical characteristics of TB and patient socioeconomic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; HIV; Coinfection; Logistic regression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200162

Metabolic syndrome in HIV-infected middle-aged women on antiretroviral therapy: prevalence and associated factors
Provedor de dados: 55
Autores: Akl,Lívia D.; Valadares,Ana L.R.; Moraes,Monica Jacques de; Pinto-Neto,Aarão M.; Lagrutta,Bianca; Costa-Paiva,Lúcia.
ABSTRACT  Objectives: To determine the prevalence of metabolic syndrome (MetS) and its associated factors in a group of HIV-infected middle-aged women.  Methods: Cross-sectional study including 273 HIV-infected climacteric women of 40-60 years of age under care in two HIV outpatient reference centers in Brazil. Metabolic syndrome diagnosis was based on 2006 International Diabetes Federation criteria. Sociodemographic, clinical and behavioral factors were evaluated as well as HIV infection-related parameters.  Results: Mean age was 47.7 years; 59.1% of women were premenopausal, 91% were on antiretroviral therapy. Current CD4 count was &gt;500 cells/mm3 in 61.7%, current viral load undetectable in 76.9% of women, and a quarter had previous diagnosis of aids....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolic syndrome; Menopause; HIV; Protease inhibitors.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300263

Are traditional body fat equations and anthropometry valid to estimate body fat in children and adolescents living with HIV?
Provedor de dados: 55
Autores: Lima,Luiz Rodrigo Augustemak de; Martins,Priscila Custódio; Alves Junior,Carlos Alencar Souza; Castro,João Antônio Chula de; Silva,Diego Augusto Santos; Petroski,Edio Luiz.
Abstract The aim of this study was to assess the validity of traditional anthropometric equations and to develop predictive equations of total body and trunk fat for children and adolescents living with HIV based on anthropometric measurements. Forty-eight children and adolescents of both sexes (24 boys) aged 7-17 years, living in Santa Catarina, Brazil, participated in the study. Dual-energy X-ray absorptiometry was used as the reference method to evaluate total body and trunk fat. Height, body weight, circumferences and triceps, subscapular, abdominal and calf skinfolds were measured. The traditional equations of Lohman and Slaughter were used to estimate body fat. Multiple regression models were fitted to predict total body fat (Model 1) and trunk fat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body fat; HIV; Skinfold thickness; Anthropometry; DXA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400448

Prevalence and risk factors for human papillomavirus infection among Chinese ethnic women in southern of Yunnan, China
Provedor de dados: 55
Autores: Baloch,Zulqarnain; Yasmeen,Nafeesa; Li,Yuanyue; Ma,Ke; Wu,Xiaomei; Yang,Shi-hua; Xia,Xueshan.
ABSTRACT  Background: Dai is a major Chinese ethnic minority group residing in rural areas of the southern part of Yunnan. However, no data exist on the Human Papillomavirus (HPV) prevalence and genotype distribution among Dai women.  Method: A total of 793 participants (Dai = 324, Han = 251, other ethnic = 218) were included in this study. PCR was performed to detect the HPV-positive samples, and genotyping was performed with an HPV Geno-Array.  Result: The overall HPV prevalence was very low among Dai women compared to the others. The prevalence of high-risk-HPV infections was significantly higher (p = 0.001) among other ethnic women (22.0%) than that among Han (13.1%) and Dai women (7.1%). The overall HPV, high-risk-HPV, single and multiple infection...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HPV; Prevalence; Dai; Genotypes; Rural; Urban; China.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300325

Human parechovirus: sepsis-like illness with pulmonary infection
Provedor de dados: 55
Autores: Vidal,Luíne Rosele Renaud; Cavalli,Bárbara; Almeida,Sérgio Monteiro de; Raboni,Sônia Mara; Nogueira,Meri Bordignon.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600675

Transmitted drug resistance in patients with acute/recent HIV infection in Brazil
Provedor de dados: 55
Autores: Ferreira,Ana Cristina G.; Coelho,Lara E.; Grinsztejn,Eduarda; Jesus,Carlos S. de; Guimarães,Monick L.; Veloso,Valdiléa G.; Grinsztejn,Beatriz; Cardoso,Sandra W.
Abstract  Introduction: The widespread use of antiretroviral therapy increased the transmission of antiretroviral resistant HIV strains. Antiretroviral therapy initiation during acute/recent HIV infection limits HIV reservoirs and improves immune response in HIV infected individuals. Transmitted drug resistance may jeopardize the early goals of early antiretroviral treatment among acute/recent HIV infected patients.  Methods: Patients with acute/recent HIV infection who underwent resistance test before antiretroviral treatment initiation were included in this analysis. HIV-1 sequences were obtained using an in house protease/reverse transcriptase genotyping assay. Transmitted drug resistance was identified according to the Stanford HIV Database for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Infection; Transmission; Primary resistance; Antiretroviral therapy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400396

Serum levels of neurotrophic factors in active toxoplasmic retinochoroiditis
Provedor de dados: 55
Autores: Cordeiro,Cynthia Azeredo; Vieira,Erica Leandro Marciano; Rocha,Natália Pessoa; Castro,Vinicius Monteiro; Oréfice,Juliana Lambert; Barichello,Tatiana; Costa,Rogerio Alves; Oréfice,Fernando; Young,Lucy; Teixeira,Antonio Lucio.
Abstract Toxoplasmic retinochoroiditis (TR) is the most common identifiable cause of posterior uveitis in Brazil. Response to treatment and clinical presentation may vary significantly. We assessed serum levels of brain-derived neurotrophic factor (BDNF), glial cell line-derived neurotrophic factor (GDNF), nerve growth factor (NGF), neurotrophin (NT)-3, and NT-4/5 in patients with active TR, before and after TR treatment.  Methods: Twenty patients with active lesion and 15 healthy controls were enrolled in the study. Serum concentration of neurotrophic factors was determined by enzyme-linked immunosorbent assay.  Results: BDNF levels were significantly higher in patients before treatment when compared with controls (p = 0.0015). There was no significant...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Retinochoroiditis; Toxoplasma gondii; Brain-derived neurotrophic factor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200176

How to detect new viral outbreaks or epidemics? We need to survey the circulation of viruses in humans and other animals using fast, sensible, cheap, and broad-spectrum methodologies
Provedor de dados: 55
Autores: Ellwanger,Joel Henrique; Kaminski,Valéria de Lima; Chies,José Artur Bogo.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200211

A cross-sectional study assessing the pharyngeal carriage of Neisseria meningitidis in subjects aged 1-24 years in the city of Embu das Artes, São Paulo, Brazil
Provedor de dados: 55
Autores: Weckx,Lily Yin; Puccini,Rosana Fiorini; Machado,Antónia; Gonçalves,Maria Gisele; Tuboi,Suely; Barros,Eliana de; Devadiga,Raghavendra; Ortega-Barria,Eduardo; Colindres,Romulo.
ABSTRACT Meningococcal carriage is a prerequisite for invasive infection. This cross-sectional study assessed the pharyngeal carriage prevalence in healthy subjects aged 1-24 years in Embu das Artes city, São Paulo, Brazil. Pharyngeal swabs were examined for the presence of Neisseria meningitidis. The isolates were tested for different serogroups using agglutination and polymerase chain reaction. A logistic regression model assessed any independent association between Neisseria meningitidis carriage and various risk factors. A total of 87/967 subjects (9%, 95% Confidence Interval (CI): 7.3-11.0) tested positive for N. meningitidis: 6.2% (95% CI: 3.8-9.4) in 1-4 years, 8.5% (95% CI: 5.1-13.0) in 5-9 years, 12.5% (95% CI: 7.8-18.6) in 10-14 years, 12.6% (95%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carriage; Meningococcal disease; Neisseria meningitidis; Pharyngeal; Serogroup.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600587

Meropenem-induced low valproate levels in a cerebral palsy child
Provedor de dados: 55
Autores: Okumura,Lucas Miyake; Andreolio,Cinara; Giorgio,Carla Di; Carvalho,Paulo Roberto Antonacci; Piva,Jefferson Pedro.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400491

A case of chronic lacrimal canaliculitis: revisiting the role of Actinomyces israelii
Provedor de dados: 55
Autores: Mohanty,Srujana; Sahu,Subhrajyoti; Parija,Sucheta; Praharaj,Ashok K.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500574

Cardiac complications associated with the influenza viruses A subtype H7N9 or pandemic H1N1 in critically ill patients under intensive care
Provedor de dados: 55
Autores: Wang,Jiajia; Xu,Hua; Yang,Xinjing; Zhao,Daguo; Liu,Shenglan; Sun,Xue; Huang,Jian-an; Guo,Qiang.
Abstract  Background and objective: The clinical presentations and disease courses of patients hospitalized with either influenza A virus subtype H7N9 (H7N9) or 2009 pandemic H1N1 influenza virus were compared in a recent report, but associated cardiac complications remain unclear. The present retrospective study investigated whether cardiac complications in critically ill patients with H7N9 infections differed from those infected with the pandemic H1N1 influenza virus strain.  Methods: Suspect cases were confirmed by reverse transcription polymerase chain reaction assays with specific confirmation of the pandemic H1N1 strain at the Centers for Disease Control and Prevention. Comparisons were conducted at the individual-level data of critically ill...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cardiac complications; H7N9; H1N1.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100012

Serum markers as an aid in the diagnosis of pulmonary fungal infections in AIDS patients
Provedor de dados: 55
Autores: Passos,Ana Isabela Morsch; Dertkigil,Rachel Polo; Ramos,Marcelo de Carvalho; Busso-Lopes,Ariane Fidelis; Tararan,Cibele; Ribeiro,Erivan Olinda; Schreiber,Angélica Zaninelli; Trabasso,Plinio; Resende,Mariangela Ribeiro; Moretti,Maria Luiza.
ABSTRACT  Introduction: The etiology of pulmonary infections in HIV patients is determined by several variables including geographic region and availability of antiretroviral therapy.  Materials and methods: A cross-sectional prospective study was conducted from 2012 to 2016 to evaluate the occurrence of pulmonary fungal infection in HIV-patients hospitalized due to pulmonary infections. Patients’ serums were tested for (1-3)-β-D-Glugan, galactomannan, and lactate dehydrogenase. The association among the variables was analyzed by univariate and multivariate regression analysis.  Results: 60 patients were included in the study. The patients were classified in three groups: Pneumocystis jirovecii pneumonia (19 patients), community-acquired pneumonia (18...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pulmonary infection; HIV/AIDS; (1-3)-β-D-Glugan; LDH; LAMP; Pneumocystosis; Fungal infection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600606

Mycobacterium avium-intracellulare and the unpredictable course of hypercalcemia in an AIDS patient
Provedor de dados: 55
Autores: Ayoubieh,Houriya; Alkhalili,Eyas.
Abstract A 37-year-old man with AIDS presented with altered mental status four weeks after stopping his medications for Mycobacterium avium-intracellulare (MAI). He had low CD4 cell count and severe hypercalcemia. Bone marrow biopsy revealed bone marrow infiltration by granulomas positive for acid-fast bacilli and cultures grew MAI. His hypercalcemia continued to worsen with the initiation of MAI therapy but we were able to treat it successfully with pamidronate and calcitonin.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Hypercalcemia; AIDS; Mycobacterium infection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100116

Risk factors for mortality in patients with ventilator-associated pneumonia caused by carbapenem-resistant Enterobacteriaceae
Provedor de dados: 55
Autores: Tuon,Felipe F.; Graf,Maria Esther; Merlini,Alexandre; Rocha,Jaime L.; Stallbaum,Suellen; Arend,Lavinia N.; Pecoit-Filho,Roberto.
Abstract  Background: The ideal therapeutic option for ventilator associated pneumonia caused by carbapenem-resistant Enterobacteriaceae is not defined. The aim of this study was to assess mortality-associated risk factors in patients with VAP by CRE and determine the outcome of several treatment options.  Methods: This was a retrospective study performed in two tertiary hospitals involving patients with VAP caused by CRE between January 2010 and August 2014. The outcomes were mortality within 30 days of VAP diagnosis and overall mortality during hospital admission. Risk factors for mortality were assessed by comparing variables of survivors and non-survivors.  Results: One hundred and twelve patients with CRE-VAP were included, 73 (65%) male, median age...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbapenemase-producing Klebsiella pneumoniae; Ventilator-associated pneumonia; Risk factors; Mortality; Treatment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100001

HPV-related external genital lesions among men residing in Brazil
Provedor de dados: 55
Autores: Silva,Roberto Jose Carvalho da; Sudenga,Staci Lynn; Sichero,Laura; Baggio,Maria Luiza; Galan,Lenice; Cintra,Ricardo; Torres,Benji Nelson; Stoler,Mark; Giuliano,Anna Regina; Villa,Luisa Lina.
Abstract The aims of this study were to determine the incidence of external genital lesions (EGLs), specifically histologically confirmed condyloma (genital warts) and Penile Intraepithelial Neoplasia (PeIN), and genital HPV infection progression to EGLs among healthy men aged 18-73 residing in Brazil. Subjects included 1118 men enrolled in the HPV Infection in Men (HIM) study between July 2005 and June 2009. At each visit, EGLs were biopsied and subjected to pathological evaluation. HPV status in genital swabs and biopsies was determined by Linear Array and INNO-LiPA, respectively. Age-specific EGLs incidence and the proportion and median time to EGL development were estimated. Kaplan-Meier cumulative incidence rates at 6, 12, and 24 months were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Men; Genital lesions; PeIN; Condyloma; HPV.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400376

Molecular diagnosis of symptomatic toxoplasmosis: a 9-year retrospective and prospective study in a referral laboratory in São Paulo, Brazil
Provedor de dados: 55
Autores: Camilo,Lilian Muniz; Pereira-Chioccola,Vera Lucia; Gava,Ricardo; Meira-Strejevitch,Cristina da Silva; Vidal,Jose Ernesto; Mattos,Cinara Cássia Brandão de; Frederico,Fábio Batista; De Mattos,Luiz Carlos; Spegiorin,Lígia Cosentino Junqueira Franco; Murata,Fernando Henrique Antunes; Ferreira,Marina Neves; Barbosa,Deusenia Machado Ulisses; Gonçalves,Fausto da Silva; Dias,Cristiane Moraes; Catelan,Marcia Wakai; Siqueira,Rubens Camargo; Previato,Mariana; Barbosa,Amanda Pires; Cavallini,Danilo.
ABSTRACT Symptomatic forms of toxoplasmosis are a serious public health problem and occur in around 10-20% of the infected people. Aiming to improve the molecular diagnosis of symptomatic toxoplasmosis in Brazilian patients, this study evaluated the performance of real time PCR testing two primer sets (B1 and REP-529) in detecting Toxoplasma gondii DNA. The methodology was assayed in 807 clinical samples with known clinical diagnosis, ELISA, and conventional PCR results in a 9-year period. All samples were from patients with clinical suspicion of several features of toxoplasmosis. According to the minimum detection limit curve (in CT), REP-529 had greater sensitivity to detect T. gondii DNA than B1. Both primer sets were retrospectively evaluated using 515...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxoplasma gondii; Symptomatic toxoplasmosis; Diagnosis; Real-time polymerase chain reaction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600638

Ceftolozane-tazobactam activity against drug-resistant Enterobacteriaceae and Pseudomonas aeruginosa causing healthcare-associated infections in Latin America: report from an antimicrobial surveillance program (2013-2015)
Provedor de dados: 55
Autores: Pfaller,Michael A.; Shortridge,Dee; Sader,Helio S.; Gales,Ana; Castanheira,Mariana; Flamm,Robert K.
ABSTRACT This study evaluated the in vitro activity of ceftolozane-tazobactam and comparator agents tested against Latin American isolates of Enterobacteriaceae and Pseudomonas aeruginosa from patients with health care-associated infections. Ceftolozane-tazobactam is an antipseudomonal cephalosporin combined with a well-established β-lactamase inhibitor.A total of 2415 Gram-negative organisms (537 P. aeruginosa and 1878 Enterobacteriaceae) were consecutively collected in 12 medical centers located in four Latin American countries. The organisms were tested for susceptibility by broth microdilution methods as described by the CLSI M07-A10 document and the results interpreted according to EUCAST and CLSI breakpoint criteria.  Results: Ceftolozane-tazobactam...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ceftolozane-tazobactam; Drug resistance; Enterobacteriaceae; P. aeruginosa; Latin America; Surveillance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600627

Long-term virologic and immunologic responses on darunavir/ritonavir - containing regimens among highly antiretroviral therapy-experienced patients: 7-year follow-up of a prospective cohort study in São Paulo, Brazil
Provedor de dados: 55
Autores: Vidal,José E.; Santos,Ariane M.R. dos; Miranda,Érique J.F. Peixoto de; Segurado,Aluísio C.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600680

Geolocalization of HIV-1 subtypes and resistance mutations of patients failing antiretroviral therapy in Salvador - Brazil
Provedor de dados: 55
Autores: Oliveira Filho,Antonio Walter de; Brites,Carlos.
ABSTRACT  Background: Geographical distribution of HIV variants is an important way to understand the circulation and spread of such viral strains.  Objectives: To evaluate the spatial distribution of HIV-1 variants in patients failing antiretroviral therapy, in Salvador, Brazil.  Methods: We performed a cross-sectional evaluation of HIV resistance test reports of patients who underwent genotyping tests in a referral center in Salvador, Brazil, for the years 2008-2014. The laboratory database contains around 2500 resistance reports of patients failing antiretroviral therapy. Genotypic tests were performed by sequencing of HIV-1 POL region (TrueGene, Siemens). We assessed HIV-1 resistance mutations and subtype, as well as residential address, age, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV-1; Resistance mutations; Brazil; Geolocalization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300234

Progressive disseminated histoplasmosis: a systematic review on the performance of non-culture-based diagnostic tests
Provedor de dados: 55
Autores: Falci,Diego R.; Hoffmann,Elias R.; Paskulin,Diego D.; Pasqualotto,Alessandro C.
Abstract The diagnosis of progressive disseminated histoplasmosis is often a challenge to clinicians, especially due to the low sensitivity and long turnaround time of the classic diagnostic methods. In recent years, studies involving a variety of non-culture-based diagnostic tests have been published in the literature. We performed a systematic review by selecting studies evaluating non-culture-based diagnostic methods for progressive disseminated histoplasmosis. We searched for articles evaluating detection of antibody, antigens, as well as DNA-based diagnostic methods. A comprehensive PUBMED, Web of Science, and Cochrane Library search was performed between the years 1956 and 2016. Case reports, review articles, non-human models and series involving...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disseminated histoplasmosis; Non-culture; Enzyme immunoassay; Diagnostic tests.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100007

A case of urinary tract infection caused by Raoultella planticola after a urodynamic study
Provedor de dados: 55
Autores: Tuğcu,Murat; Ruhi,Caglar; Gokce,Ali M.; Kara,Melih; Aksaray,Sebahat.
Abstract Here we report the case of a patient who developed urinary tract infection after a urodynamic study. The causative agent was Raoultella planticola, a rare opportunistic pathogen that usually invades immunocompromised patients. While a urinary tract infection with R. planticola has been previously described, this is the first report in which an R. planticola infection developed after a urodynamic study. We postulate that the mechanism of infection was direct invasion of the urinary tract from contaminated urodynamic study equipment. Here, we discuss the role played by isotonic solutions in facilitating bacterial reproduction.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Urinary tract infection; Raoultella planticola; Urodynamic study; Contamination.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200196

Molecular diversity of human parvovirus B19 during two outbreaks of erythema infectiosum in Brazil
Provedor de dados: 55
Autores: Garcia,Rita de Cássia Nasser Cubel; Pereira,Renata Freire Alves; Azevedo,Kátia Martins Lopes de; Castro,Tatiana Xavier de; Mello,Francisco C.A.; Setubal,Sérgio; Siqueira,Marilda M.; Brown,David; Oliveira,Solange Artimos de.
Abstract This study was conducted to provide information on the genetic diversity of human parvovirus B19 (B19V) circulating in the municipality of Niterói, Rio de Janeiro, Southeast Brazil during 1996–2006, a period with two distinct outbreaks of B19V infection: 1999–2000 and 2004–2005. A total of 27 sera from patients with erythema infectiosum and five sera from HIV-infected patients that tested positive for B19V DNA during the study period were analyzed. To genotype B19V strains, a semi-nested PCR for partial amplification of the capsid gene was performed and sequence analysis revealed that 31 sequences belonged to subgenotype 1a (G1a) of the main genotype 1 and one sequence was characterized as subgenotype 3b (G3b). The phylogenetic tree supported the...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: B19V genotypes; Outbreak; Erythema infectiosum; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100102

Prevalence of Chlamydia trachomatis and Neisseria gonorrhea and associated factors among women living with Human Immunodeficiency Virus in Brazil: a multicenter study
Provedor de dados: 55
Autores: Miranda,Angelica E.; Silveira,Mariangela F.; Travassos,Ana Gabriela; Tenório,Teresinha; Val,Isabel Cristina Chulvis do; Lannoy,Leonor de; Mattos Junior,Hortensio Simões de; Carvalho,Newton Sergio de.
Abstract  Background: Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (GC) cause infections in the female genital tract, increasing susceptibility to and infectiousness of HIV. The objectives of the present study were to determine the prevalence and associated factors of CT and GC infection among HIV-infected women in Brazil.  Methods: Cross-sectional study conducted from March to December 2015, including HIV-infected women attending referral centers in nine states of Brazil, aged 18-49 years, nonpregnant. An interview was conducted including socio-demographic, epidemiological and clinical characteristics. After the interview, gynecological examination was conducted to collect cervical cytology and vaginal secretion to C. trachomatis and N....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlamydia trachomatis; Neisseria gonorrhoeae; HIV; Women; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400402

qPCR detection of Mycobacterium leprae in biopsies and slit skin smear of different leprosy clinical forms
Provedor de dados: 55
Autores: Azevedo,Michelle de Campos Soriani; Ramuno,Natália Mortari; Fachin,Luciana Raquel Vincenzi; Tassa,Mônica; Rosa,Patrícia Sammarco; Belone,Andrea de Faria Fernandes; Diório,Suzana Madeira; Soares,Cleverson Teixeira; Garlet,Gustavo Pompermaier; Trombone,Ana Paula Favaro.
Abstract Leprosy, whose etiological agent is Mycobacterium leprae, is a chronic infectious disease that mainly affects the skin and peripheral nervous system. The diagnosis of leprosy is based on clinical evaluation, whereas histopathological analysis and bacilloscopy are complementary diagnostic tools. Quantitative PCR (qPCR), a current useful tool for diagnosis of infectious diseases, has been used to detect several pathogens including Mycobacterium leprae. The validation of this technique in a robust set of samples comprising the different clinical forms of leprosy is still necessary. Thus, in this study samples from 126 skin biopsies (collected from patients on all clinical forms and reactional states of leprosy) and 25 slit skin smear of leprosy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium leprae; QPCR; Leprosy; Bacilloscopy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100071

Extrahepatic manifestations of chronic hepatitis C infection: a consecutive study in Brazilian patients
Provedor de dados: 55
Autores: Tengan,Fátima M.; Levy-Neto,Mauricio; Miziara,Ivan D.; Dantas,Bianca P.; Maragno,Luciana.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200203

Papillomavirus infections in the oral and genital mucosa of asymptomatic women
Provedor de dados: 55
Autores: Oliveira,Ledy Horto Santos; Santos,Larissa Silva; Silva,Carolina Oliveira; Augusto,Everton Faccini; Neves,Felipe Piedade Gonçalves.
Abstract Human papillomavirus (HPV) has been found in several regions of the body, including the oral cavity. Recently, this virus has been associated with oropharyngeal cancer, but little is known about HPV transmission to the oral cavity. We carried out a study to investigate concurrent oral and cervical infections in 76 asymptomatic women attending a healthcare program. Demographic and behavior data were obtained through a structured questionnaire. Oral and cervical mucosa scrapings were collected and stored for DNA extraction. HPV DNA amplification was performed by polymerase chain reaction assay (PCR) using both primers My09/My11 and FAP59/64, followed by HPV typing with restriction fragment length polymorphism analysis (RFLP) and sequencing. The data...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: HPV; Oral infection; Transmission.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100088

Snow's case revisited: new tool in geographic profiling of epidemiology
Provedor de dados: 55
Autores: Papini,Alessio; Santosuosso,Ugo.
Abstract Geographic Profiling technique is used to find the origin of a series of crimes. The method was recently extended to other fields. One of the best renowned data in epidemiology is that by John Snow during an outburst of cholera in London. We wrote Python scripts to perform the analyses to apply the Geographic Profiling for individuating the starting origin of an infection by using the old Snow's data set. We modified the method by applying a weight to each point of the map where cases of cholera were reported. The weight was proportional to the number of cases in a given location.This modification of the Geographic Profiling method allowed to individuate in the map an area of maximum probability of the infection source, which was a few meters wide...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Geographic profiling; Geographic epidemiology; Cholera; John Snow.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100112

A prospective observational cohort study to assess the incidence of acute otitis media among children 0-5 years of age in Southern Brazil
Provedor de dados: 55
Autores: Lanzieri,Tatiana M.; Cunha,Clóvis Arns da; Cunha,Rejane B.; Arguello,D. Fermin; Devadiga,Raghavendra; Sanchez,Nervo; Barria,Eduardo Ortega.
Abstract  Objectives: To estimate acute otitis media incidence among young children and impact on quality of life of parents/caregivers in a southern Brazilian city.  Methods: Prospective cohort study including children 0-5 years of age registered at a private pediatric practice. Acute otitis media episodes diagnosed by a pediatrician and impact on quality of life of parents/caregivers were assessed during a 12-month follow-up.  Results: During September 2008-March 2010, of 1,136 children enrolled in the study, 1074 (95%) were followed: 55.0% were ≤2 years of age, 52.3% males, 94.7% white, and 69.2% had previously received pneumococcal vaccine in private clinics. Acute otitis media incidence per 1000 person-years was 95.7 (95% confidence interval:...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Acute otitis media; Children; Incidence; Quality of life.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400468

Recommendations for outpatient parenteral antimicrobial therapy in Brazil
Provedor de dados: 55
Autores: Oliveira,Priscila R.; Carvalho,Vladimir C.; Cimerman,Sergio; Lima,Ana Lucia Munhoz.
ABSTRACT A panel of national experts was convened by the Brazilian Infectious Diseases Society in order to determine the recommendations for outpatient parenteral antimicrobial therapy (OPAT) in Brazil. The following aspects are covered in the document: organization of OPAT programs; patient evaluation and eligibility criteria, including clinical and sociocultural factors; diagnosis of eligibility; venous access and antimicrobial infusion devices; protocols for antimicrobial use and monitoring and cost-effectiveness.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Therapy; Outpatient infusion; Health planning recommendations; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600648

Oxidative stress in sepsis. Possible production of free radicals through an erythrocyte-mediated positive feedback mechanism
Provedor de dados: 55
Autores: Oliveira,Yanaihara Pinchemel Amorim de; Pontes-de-Carvalho,Lain Carlos; Couto,Ricardo David; Noronha-Dutra,Alberto Augusto.
Abstract  Background: Sepsis is an illness with a high morbidity for which no effective treatment exists. Its treatment has a high cost because it usually requires an intensive care unit and expensive antibiotics. The present study focus in the production of reactive oxygen species in the early stages of sepsis. This study aimed at investigating the production of reactive oxygen specie during the inflammatory response in patients with sepsis.  Methods: Reactive oxygen specie production and insoluble myeloperoxidase obtained from fresh whole blood were measured by photon counting chemiluminescence in the blood of 18 septic patients and 12 healthy individuals. Modified red blood cells were evaluated by staining of blood smears. The production of reactive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sepsis; Oxidative stress; Inflammation; Modified erythrocytes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100019

Protein carbonyl content: a novel biomarker for aging in HIV/AIDS patients
Provedor de dados: 55
Autores: Kolgiri,Vaishali; Patil,Vinayak Wamanrao.
Abstract  Background: The major complications of “treated” Human Immunodeficiency Virus (HIV) infection are cardiovascular disease, malignancy, renal disease, liver disease, bone disease, and perhaps neurological complications, which are phenomena of the normal aging process occurring at an earlier age in the HIV-infected population. The present study is aimed to explore protein carbonyl content as a biomarker for detecting oxidative DNA damage induced ART toxicity and/or accelerated aging in HIV/AIDS patients.  Objective: To investigate the potential of carbonyl content as a biomarker for detecting oxidative Deoxyribonucleic acid (DNA) damage induced Antiretroviral Theraphy (ART) toxicity and/or accelerated aging in HIV/AIDS patients.  Methods: In this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbonyl content; DNA damage; Human immunodeficiency virus (HIV) infection; 8-OH-dG; ROS.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100035

Salivary anti-PGL-1 IgM may indicate active transmission of Mycobacterium leprae among young people under 16 years of age
Provedor de dados: 55
Autores: Macedo,Alexandre Casimiro de; Cunha Jr.,José Evandro; Yaochite,Juliana Navarro Ueda; Tavares,Clodis Maria; Nagao-Dias,Aparecida Tiemi.
Abstract Considering that the main route of Mycobacterium leprae transmission is the upper respiratory tract, detection of salivary antibodies can be a useful tool for diagnosing early infection. The study aimed to analyze salivary anti-PGL-1 IgA and IgM antibodies in 169 children aged 4-16 years old, who lived nearby or inside the house of multibacillary or paucibacillary leprosy patients in two endemic cities in Alagoas State - Brazil. Salivary anti-PGL-1 antibodies were quantified by modified ELISA method. The frequency of contact and clinical form of the index case were significantly associated with salivary antibody levels. High frequency of IgM positivity strongly suggests active transmission of M. leprae in these communities. We suggest in the...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Leprosy; Salivary antibodies; Phenolic glycolipid-1 antigen; Mycobacterium leprae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500557

IL-10 down-regulates the expression of survival associated gene hspX of Mycobacterium tuberculosis in murine macrophage
Provedor de dados: 55
Autores: Jee,Babban; Sharma,Pawan; Katoch,Kiran; Joshi,Beenu; Awasthi,Sudhir Kumar.
Abstract Mycobacterium tuberculosis (MTB) adopts a special survival strategy to overcome the killing mechanism(s) of host immune system. Amongst the many known factors, small heat shock protein 16.3 (sHSP16.3) of MTB encoded by gene hspX has been reported to be critical for the survival of MTB. In the present study, the effect of recombinant murine interferon-gamma (rmIFN-γ) and recombinant murine interleukin-10 (rmIL-10) on the expression of gene hspX of MTB in murine macrophage RAW264.7 has been investigated. By real-time RT-PCR, it was observed that three increasing concentrations (5, 25 and 50 ng/ml) of rmIFN-γ significantly up-regulated the expression of hspX whereas similar concentrations of rmIL-10 (5, 25 and 50 ng/ml) significantly down-regulated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis; HspX; RmIFN-γ; RmIL-10; Murine macrophage.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400386

Molecular identification of viral agents associated with acute conjunctivitis: a prospective controlled study
Provedor de dados: 55
Autores: Akçay,Emine; Çarhan,Ahmet; Hondur,Gözde; Tufan,Zeliha Koçak; Duru,Necati; Kılıç,Selçuk; Ensari,Ezgi Naz; Uğurlu,Nagihan; Çağıl,Nurullah.
Abstract  Background: Viral conjunctivitis are the most frequent infections in ophthalmology clinics. The diagnosis is usually relying on clinical findings and medical history. However, topical antibiotics are often used unnecessarily addition to symptomatic treatment because of unsure agents. We aimed to detect the Adenovirus, Coxsackievirus and Enterovirus from conjunctiva and pharyngeal samples of patients.  Methods: The conjunctiva and pharyngeal samples of the patients with conjunctivitis were taken by Virocult transport media and kept at -80 ºC up to study day. Adenovirus spp, Enterovirus 70 and Enterovirus 71, Coxsackie A24 and Coxsackie A16 were detected by real-time PCR. Samples from healthy health care workers of ophthalmology clinic were used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adenovirus; Conjunctivitis; Viral; PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400391

Imbalance of Th17 and Treg in peripheral blood mononuclear cells of active tuberculosis patients
Provedor de dados: 55
Autores: Luo,Jie; Zhang,Mingxu; Yan,Baosong; Zhang,Kejun; Chen,Ming; Deng,Shaoli.
Abstract  Objective: Maintaining a right balance between Th17 and Treg might be critical to the immunopathogenesis of active tuberculosis (TB). This study aimed to assess whether the Th17/Treg balance is altered in active TB patients.  Methods: 250 study subjects (90 active TB patients, 80 latent TB subjects, and 80 healthy controls) were recruited for the study. The expression of Th17 and Treg in peripheral blood mononuclear cells (PBMCs) in the 250 subjects was investigated by flow cytometry. Plasma levels of cytokines IL-17 and IL-10, which are related to Th17 and Treg, respectively, were determined by ELISA.  Results: The percentages of Th17 and Treg in PBMCs from active TB patients were significantly higher than those from latent TB or control groups...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Active tuberculosis; Th17; Treg; IL-17; IL-10.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200155

Fluconazole prophylaxis in preterm infants: a systematic review
Provedor de dados: 55
Autores: Rios,Juliana Ferreira da Silva; Camargos,Paulo Augusto Moreira; Corrêa,Luísa Petri; Romanelli,Roberta Maia de Castro.
ABSTRACT  Objective: This article aims to review the use of antifungal prophylaxis with intravenous fluconazole in premature newborns and the occurrence of Invasive Candidiasis.  Methods: This is a systematic review with search at databases: PubMed, Capes Portal, Virtual Health Library (BVS - Biblioteca Virtual em Saúde)/Lilacs, Scopus and Cochrane. The keywords used were: "Antifungal", "Candida" "Fluconazole prophylaxis" and "Preterm infants".  Results: Invasive Candidiasis was evaluated in all the twelve items. In eleven of them, there was a statistically significant difference between the groups receiving prophylactic fluconazole, with lower frequency of Invasive Candidiasis, compared to placebo or no prophylaxis group. Colonization by Candida species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antifungal; Candida; Fluconazole prophylaxis; Preterm infants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300333

Comparison between the gold standard DXA with calcaneal quantitative ultrasound based-strategy (QUS) to detect osteoporosis in an HIV infected cohort
Provedor de dados: 55
Autores: Roldan,Eugenia Quiros; Brianese,Nigritella; Raffetti,Elena; Focà,Emanuele; Pezzoli,Maria Chiara; Bonito,Andrea; Ferraresi,Alice; Lanza,Paola; Porcelli,Teresa; Castelli,Francesco.
ABSTRACT  Introduction: Osteoporosis represents one of the most frequent comorbidity among HIV patients. The current standard method for osteoporosis diagnosis is dual-energy X-ray absorptiometry. Calcaneal quantitative ultrasound can provide information about bone quality. The aims of this study are to compare these two methods and to evaluate their ability to screen for vertebral fracture.  Methods: This cross-sectional study was conducted in HIV patients attending the Clinic of Infectious and Tropical Diseases of Brescia during 2014 and who underwent lumbar/femoral dual-energy X-ray absorptiometry, vertebral fracture assessment and calcaneal quantitative ultrasound. The assessment of osteoporosis diagnostic accuracy was performed for calcaneal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteoporosis; HIV; Calcaneal ultrasound.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600581

Serotype changes and antimicrobial nonsusceptibility rates of invasive and non-invasive Streptococcus pneumoniae isolates after implementation of 10-valent pneumococcal nontypeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) in Bulgaria
Provedor de dados: 55
Autores: Setchanova,Lena; Murdjeva,Marianna; Stancheva,Iglika; Alexandrova,Alexandra; Sredkova,Maria; Stoeva,Temenuga; Yoneva,Magda; Kurchatova,Anna; Mitov,Ivan.
Abstract The 10-valent pneumococcal conjugate vaccine (PCV10) has been included in Bulgarian Childhood Immunization Program since 2010. This study aimed to assess serotype distribution and antimicrobial resistance of 198 invasive and non-invasive Streptococcus pneumoniae strains that had been isolated in Bulgaria during 2011-2016 from patients with invasive (IPD) and non-invasive (NIPD) pneumococcal diseases. The most common invasive serotypes were 3 (10.1%), 19F (4.0%), and 7F (3.0%). A significant decrease in the proportion of invasive vaccine types (VTs) from 64.2% to 35.2% was found in comparison with pre-vaccine era. The most common serotypes among middle ear fluids were 3, 19A and 19F (5.6% each), and VTs fell down from 66.4% to 40.0% in post-PCV10...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptococcus pneumoniae; Invasive and non-invasive isolates; Serotypes; Antimicrobial nonsusceptibility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400433

Bone mineral density and vitamin D concentration: the challenges in taking care of children and adolescents infected with HIV
Provedor de dados: 55
Autores: Carmo,Fabiana Bononi; Terreri,Maria Teresa; Succi,Regina Célia de Menezes; Beltrão,Suenia Vasconcelos; Gouvea,Aida de Fátima Tomé Barbosa; Paulino,Erica Regina Cruz; Machado,Daisy Maria.
ABSTRACT  Background: The increase in life expectancy for patients living with human immunodeficiency virus (HIV) infection has resulted in health complications related to a chronic disease.  Objectives: To evaluate the prevalence of bone mineral density (BMD) alterations and vitamin D concentrations in HIV-infected children and adolescents and to verify the variations in those parameters during a 12-month interval.  Methods: A prospective cohort study with a dual period of evaluation was conducted in 57 patients perinatally HIV-infected and one patient with sexual abuse in early infancy. Demographic, anthropometric, pubertal stage, viral load, T CD4+ cell count and antiretroviral therapy were evaluated. Biochemical tests and total body (TB) and lumbar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Antiretroviral; Infant; Diagnosis; Metabolism; Bone.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300270

Intrauterine fetal death due to congenital cytomegalovirus infection
Provedor de dados: 55
Autores: Licci,Stefano.
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500567

Relationship between climatic factors and air quality with tuberculosis in the Federal District, Brazil, 2003-2012
Provedor de dados: 55
Autores: Fernandes,Fernanda Monteiro de Castro; Martins,Eder de Souza; Pedrosa,Daniella Melo Arnaud Sampaio; Evangelista,Maria do Socorro Nantua.
Abstract  Introduction: Despite the high rate of tuberculosis indicators in Brazil, the Federal District shows a low prevalence of the disease.  Objective: To analyze the relationship between climatic factors and air quality with tuberculosis in the Brazilian Federal District.  Methodology: This was an ecological and descriptive study comparing 3927 new cases of Tuberculosis registered at the Federal District Tuberculosis Control Program with data from the National Institute of Meteorology, Brazilian Institute of Geography and Statistics, Brazilian Agricultural Research Institute, Brasilia Environmental Institute, and the Federal District Planning Company.  Results: From 2003 to 2012, there has been a higher incidence of Tuberculosis (27.0%) in male...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Seasonality; Air pollution.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400369

Early-onset neonatal sepsis and the implementation of group B streptococcus prophylaxis in a Brazilian maternity hospital: a descriptive study
Provedor de dados: 55
Autores: Freitas,Felipe Teixeira de Mello; Romero,Gustavo Adolfo Sierra.
Abstract  Objectives: To describe early-onset neonatal sepsis (EOS) epidemiology in a public maternity hospital in Brasilia, Brazil.  Methods: We defined EOS as a positive blood culture result obtained from infants aged ≤72 hours of life plus treatment with antibiotic therapy for ≥5 days. Incidence was calculated based on the number of cases and total live births (LB). This is a descriptive study comparing the period of 2012–2013 with the period of 2014–September 2015, before and after implementation of antibiotic prophylaxis during labor for group B streptococcus (GBS) prevention, respectively.  Results: Overall, 36 infants developed EOS among 21,219 LB (1.7 cases per 1000 LB) and 16 died (case fatality rate of 44%). From 2014, 305 vaginal-rectal swabs...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Neonatal sepsis; Group B streptococcal disease; Escherichia coli infection; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100092

Newborn with rash due to Klebsiella infection
Provedor de dados: 55
Autores: Martínez-Bucio,Víctor; López-Valdés,Julio César.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200199

Immunogenicity and safety of Southern Hemisphere inactivated quadrivalent influenza vaccine: a Phase III, open-label study of adults in Brazil
Provedor de dados: 55
Autores: Zerbini,Cristiano A.F.; Ribeiro dos Santos,Rodrigo; Jose Nunes,Maria; Soni,Jyoti; Li,Ping; Jain,Varsha K.; Ofori-Anyinam,Opokua.
Abstract The World Health Organization influenza forecast now includes an influenza B strain from each of the influenza B lineages (B/Yamagata and B/Victoria) for inclusion in seasonal influenza vaccines. Traditional trivalent influenza vaccines include an influenza B strain from one lineage, but because two influenza B lineages frequently co-circulate, the effectiveness of trivalent vaccines may be reduced in seasons of influenza B vaccine-mismatch. Thus, quadrivalent vaccines may potentially reduce the burden of influenza compared with trivalent vaccines.In this Phase III, open-label study, we assessed the immunogenicity and safety of Southern Hemisphere inactivated quadrivalent influenza vaccine (Fluarix™ Tetra) in Brazilian adults (NCT02369341). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quadrivalent; Influenza; Vaccine; Immunogenicity; Safety; Brazil; Adults.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100063

Hepatocellular carcinoma in patients with B and C virus hepatitis without cirrhosis
Provedor de dados: 55
Autores: Carvalho,Kellyane Santana Dias; Cotrim,Helma Pinchemel; Fonseca Junior,Luciano Espinheira; Moreira,Valéria; Sirqueira,Érika.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300367

Heterogeneous distribution of HCV genotypes and growing menace of mixed HCV infection in blood recipients in Khyber Pakhtunkhwa
Provedor de dados: 55
Autores: Attaullah,Sobia; Khan,Sanaullah; Zahid,Muhammad.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400489

Danger in the streets: exposures to bloodborne pathogens after community sharp injuries in Rio de Janeiro, Brazil
Provedor de dados: 55
Autores: Costa,Marcellus Dias; Rapparini,Cristiane; Schmaltz,Carolina Arana Stanis; Tuyama,Mari; Lauria,Lilian de Mello; Saraceni,Valeria; Barroso,Paulo Feijó.
ABSTRACT  Objective: Exposures to sharps injuries occurring in the community are relatively frequent. We describe characteristics of community sharp exposures reported in the city of Rio de Janeiro from 1997 to 2010.  Methods: A cross-sectional analysis of exposure reports to sharps in the community reported to a surveillance system, designed for health care workers, of the Municipal Health Department of Rio de Janeiro. The characteristics of exposed individuals analyzed included types of exposure, the circumstances of the accident, and the prophylaxis offered.  Results: 582 exposures were studied. Median age was 30 years and 83 (14%) involved children with less than 10 years of age. Two hundred and seventeen (37%) occurred with sharps found in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Needlestick; Bloodborne; HIV; Hepatitis; Medical waste; Sharp injuries; Postexposure prophylaxis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300306

Viruses vector control proposal: genus Aedes emphasis
Provedor de dados: 55
Autores: Reis,Nelson Nogueira; Silva,Alcino Lázaro da; Reis,Elma Pereira Guedes; Silva,Flávia Chaves e; Reis,Igor Guedes Nogueira.
Abstract The dengue fever is a major public health problem in the world. In Brazil, in 2015, there were 1,534,932 cases, being 20,320 cases of severe form, and 811 deaths related to this disease. The distribution of Aedes aegypti, the vector, is extensive. Recently, Zika and Chikungunya viruses had arisen, sharing the same vector as dengue and became a huge public health issue. Without specific treatment, it is urgently required as an effective vector control. This article is focused on reviewing vector control strategies, their effectiveness, viability and economical impact. Among all, the Sterile Insect Technique is highlighted as the best option to be adopted in Brazil, once it is largely effectively used in the USA and Mexico for plagues related to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Vector control; Aedes; Arbovirus; Sterile insect technique.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400457

Mobile health application to assist doctors in antibiotic prescription - an approach for antibiotic stewardship
Provedor de dados: 55
Autores: Tuon,Felipe Francisco; Gasparetto,Juliano; Wollmann,Luciana Cristina; Moraes,Thyago Proença de.
ABSTRACT  Background: Technologies applied to mobile devices can be an important strategy in antibiotic stewardship programs.  Objective: The aim of this study was to determine the impact of a decision-making application on antibiotic prescription.  Methods: This was an observational, analytical and longitudinal study on the implementation of an antimicrobial guide for mobile application. This study analyzed the period of 12 months before and 12 months after the app implementation at a university hospital based on local epidemiology, avoiding high cost drugs and reducing the potential for drug resistance including carbapenem. Antimicrobials consumption was evaluated in Daily Defined Dose/1000 patients-day and direct expenses converted into USD.  Results:...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Mobile health applications; Stewardship; Antibiotic; Infection control.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600660

Disseminated cutaneous leishmaniasis: ulcerovegetative and ulcero-crusted lesions
Provedor de dados: 55
Autores: Sgarbi,Isabela Martins; Santos,Flávia da Silva Domingos; Monteiro,Veridiana Elisa; Fonseca,Silvia Nunes Szente; Bernardes Filho,Fred.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200201

Antimicrobial resistance and plasmid replicons in Yersinia enterocolitica strains isolated in Brazil in 30 years
Provedor de dados: 55
Autores: Frazão,Miliane R.; Andrade,Leonardo N.; Darini,Ana L.C.; Falcão,Juliana P.
Abstract Some studies evaluated the resistance profile of the Y. enterocolitica strains isolated in diverse countries. However, in Brazil the isolation and the study of Y. enterocolitica are not common and therefore information about the antimicrobial resistance profile of this species in this country is scarce. Therefore, the aim of this study was to evaluate the antimicrobial resistance of Y. enterocolitica of biotypes 1A, 2 and 4 isolated from clinical and non-clinical sources between 1979 and 2012, in Brazil. This study showed that some Yersinia enterocolitica of different biotypes remain susceptible to antimicrobials used for gastroenteritis treatment. Moreover, neither acquired resistance genes nor diversity of plasmids replicons were found; however,...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Yersinia enterocolitica; Resistance profile; Plasmid replicon.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400477

Infections after shoulder arthroplasty are correlated with higher anesthetic risk score: a case-control study in Brazil
Provedor de dados: 55
Autores: Nagaya,Leonardo Hideto; Salles,Mauro José Costa; Takikawa,Lucas Sadawo Chagas; Fregoneze,Marcelo; Doneux,Pedro; Silva,Luciana Andrade da; Sella,Guilherme do Val; Miyazaki,Alberto Naoki; Checchia,Sergio Luiz.
ABSTRACT  Purposes: Shoulder arthroplasty (SA) has been performed by many years for the treatment of several conditions, including osteoarthritis and proximal humeral fractures following trauma. Surgical site infection (SSI) following Shoulder arthroplasty remains a challenge, contributing to increased morbidity and costs. Identification of risk factors may help implementing adequate strategies to prevent infection. We aimed to identify pre- and intra-operative risk factors associated with deep infections after Shoulder arthroplasty.  Methods: An unmatched case-control study was conducted to describe the prevalence, clinical and microbiological findings, and to evaluate patient and surgical risk factors for prosthetic shoulder infection (PSI), among 158...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orthopedic infection; Hemiarthroplasty; Total shoulder arthroplasty; American Society of Anesthesiologists score; Risk factor; Pseudomonas aeruginosa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600613

Prolonged lymphocytosis as the first manifestation of Hodgkin-like adult T-cell leukemia/lymphoma
Provedor de dados: 55
Autores: Bittencourt,Achiléa L.; Andrade,Agnes Carvalho; Requião,Cristiane; Arruda,Maria da Gloria Bomfim; Araújo,Iguaracyra.
Abstract Hodgkin-like ATLL is a rare variant of adult T-cell leukemia/lymphoma (ATLL), a disease caused by human T-cell lymphotropic virus type-1 (HTLV-1). At admission, a 46-year-old female presented with lymphadenomegaly, lymphocytosis, slight elevation of LDH blood level, and acid-alcohol resistant bacilli in sputum and was being treated for pulmonary tuberculosis (Tb). She had lymphocytosis in the previous 20 months. Serology for HTLV-1 was positive. Lymph node was infiltrated by medium-sized lymphocytes with scattered Hodgkin and Reed-Sternberg-like cells CD30+, CS1-4+, and CD79a+. Background cells were CD4+ and CD25+. A clinical diagnosis of favorable chronic ATLL was given. She was treated with chemotherapy but later progressed to acute ATLL and...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Adult T-cell leukemia/lymphoma; HTLV-1 infection; Pulmonary tuberculosis; Hodgkin-like ATLL.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100119

Comparative performances of serologic and molecular assays for detecting human T lymphotropic virus type 1 and type 2 (HTLV-1 and HTLV-2) in patients infected with human immunodeficiency virus type 1 (HIV-1)
Provedor de dados: 55
Autores: Campos,Karoline Rodrigues; Gonçalves,Maria Gisele; Costa,Nadia Aparecida; Caterino-de-Araujo,Adele.
ABSTRACT The present study evaluated several techniques currently available (commercial kits and in-house assays) for diagnosing human T lymphotropic viruses types 1 and 2 in two groups of patients enrolled at HIV/AIDS specialized care services in São Paulo: Group 1 (G1), n = 1608, 1237 male/371 female, median age 44.3 years old, majority using highly active antiretroviral therapy (HAART); G2, n = 1383, 930 male/453 female, median age of 35.6 years old, majority HAART naïve. Enzyme immunoassays [(EIA) Murex and Gold ELISA] were employed for human T lymphotropic viruses types 1 and 2 screening; Western blotting (WB), INNO-LIA (LIA), real-time PCR pol (qPCR), and nested-PCR-RFLP (tax) were used to confirm infection. Samples were considered human T...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HTLV-1/2; HIV-1; Coinfection; Diagnosis; Immunoblotting; PCR; HAART.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300297

Leishmania donovani infection activates Toll-like receptor 2, 4 expressions and Transforming growth factor-beta mediated apoptosis in renal tissues
Provedor de dados: 55
Autores: Kumar,Vinod; Tiwari,Neeraj; Gedda,Mallikarjuna Rao; Haque,Rizwanul; Singh,Rakesh K.
Abstract The present study was aimed to identify the underlying mechanisms of improper renal function in Leishmania donovani infection that causes VL. Mice (BALB/c) were infected with L. donovani and different parameters for proteinuria were assessed. The levels of superoxide anion (O2 -), hydrogen peroxide (H2O2), lipid peroxidation (MDA), inflammatory cytokines, and toll-like receptor (TLR) 2 and 4 expression were found significantly elevated at 60th day in these animals and declined at 90th day post infection. However, TGF-β and caspase 3 activities were higher at 90th day in comparison to 60th day post infection. These findings suggested that exacerbated inflammatory conditions correlate with abnormal renal functions in L. donovani infection, which is...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Leishmaniasis; Renal; TLRs; Apoptosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500545

High mortality outbreak of carbapenem-resistant Pseudomonas aeruginosa infection in a Brazilian pediatric oncology hospital
Provedor de dados: 55
Autores: Quiles,Milene Gonçalves; Carlesse,Fabianne; Silva,Maria Aparecida Aguiar da; Mingrone,Roberta Cabral; Fonseca,Juliane Melo; Silva,Dafne Cardoso; Pignatari,Antonio Carlos Campos.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200205

Predictors of HBeAg seroconversion after long-term nucleos(t)ide analogues treatment for chronic hepatitis B: a multicenter study in real clinical setting
Provedor de dados: 55
Autores: Yu,Weiyan; Wang,Yadong; Shen,Chuan; Ji,Ru; Zhang,Li; Zhao,Xin; Su,Miao; Zhang,Ying; He,Wenyan; Cao,Jianguo; Hao,Yanshuang; Chen,Shengpeng; Zhao,Caiyan.
ABSTRACT  Aims: To evaluate the HBeAg seroconversion rate in real clinical setting and explore its predictors in long-term nucleos(t)ide analogues (NAs) treatment for chronic hepatitis B (CHB).  Methods: 251 patients were recruited from January 2001 to September 2009 in four hospitals in Hebei province, China, for this retrospective study. Clinical and laboratory data before and after treatment with lamivudine (LAM, 100 mg daily), adefovir (ADV, 10 mg daily), telbivudine (LDT, 600 mg daily), entecavir (ETV, 0.5 mg daily), and LAM/ADV combination were compared among three groups according to treatment outcomes: synchronous HBeAg loss and HBeAg seroconversion, anti-HBe development after treatment, and no anti-HBe. Adherence was also evaluated.  Results: In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronic hepatitis B; Hepatitis B and antigens; Nucleos(t)ide analogue; Adherence.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300213

Cutaneous loxoscelism: extensive nonulcerated livedoid plaque
Provedor de dados: 55
Autores: Torres,Natalie; Rueda,Monica.
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300353

Prevalence of Trypanosoma cruzi/HIV coinfection in southern Brazil
Provedor de dados: 55
Autores: Stauffert,Dulce; Silveira,Mariangela Freitas da; Mesenburg,Marília Arndt; Manta,Adriane Brod; Dutra,Alessandra da Silva; Bicca,Guilherme Lucas de Oliveira; Villela,Marcos Marreiro.
Abstract Chagas disease reactivation has been a defining condition for acquired immune deficiency syndrome in Brazil for individuals coinfected with Trypanosoma cruzi and HIV since 2004. Although the first coinfection case was reported in the 1980s, its prevalence has not been firmly established. In order to know coinfection prevalence, a cross-sectional study of 200 HIV patients was performed between January and July 2013 in the city of Pelotas, in southern Rio Grande do Sul, an endemic area for Chagas disease. Ten subjects were found positive for T. cruzi infection by chemiluminescence microparticle immunoassay and indirect immunofluorescence. The survey showed 5% coinfection prevalence among HIV patients (95% CI: 2.0–8.0), which was 3.8 times as high as...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Chagas disease; Trypanosoma cruzi; AIDS.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200180

Arrhythmias in leptospirosis-associated acute kidney injury: a case series
Provedor de dados: 55
Autores: Soares,Douglas de Sousa; Galdino,Gabriela Studart; Rodrigues,Bruna Custódio; Silva Junior,Geraldo Bezerra da; Daher,Elizabeth De Francesco.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200209

Modulation of drug resistance and biofilm formation of Staphylococcus aureus isolated from the oral cavity of Tunisian children
Provedor de dados: 55
Autores: Zmantar,Tarek; Ben Slama,Rihab; Fdhila,Kais; Kouidhi,Bochra; Bakhrouf,Amina; Chaieb,Kamel.
Abstract  Objectives: This study aims to investigate the antimicrobial and the anti-biofilm activities of Lactobacillus plantarum extract (LPE) against a panel of oral Staphylococcus aureus (n = 9) and S. aureus ATCC 25923. The in vitro ability of LPE to modulate bacterial resistance to tetracycline, benzalchonium chloride, and chlorhexidine were tested also.  Methods: The minimum inhibitory concentrations (MICs) and the minimal bactericidal concentrations of Lactobacillus plantarum extract, tetracycline, benzalchonium chloride and clohrhexidine were determined in absence and in presence of a sub-MIC doses of LPE (1/2 MIC). In addition, the LPE potential to inhibit biofilm formation was assessed by microtiter plate and atomic force microscopy assays....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibacterial; Staphylococcus aureus; Biofilm; Antibiotics; Synergetic; Lactobacillus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100027

Superantigens: procession of frets
Provedor de dados: 55
Autores: Aslam,Bilal; Khurshid,Mohsin; Nisar,Muhammad Atif; Muzammil,Saima; Hayat,Sumreen.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300357

Tuberculosis incidence among people living with HIV/AIDS with virological failure of antiretroviral therapy in Salvador, Bahia, Brazil
Provedor de dados: 55
Autores: Rebouças,Monaliza Cardozo; Silva,Márcio Oliveira da; Haguihara,Tatiana; Brites,Carlos; Martins Netto,Eduardo.
Abstract Antiretroviral therapy for HIV has led to increased survival of HIV-infected patients. However, tuberculosis remains the leading opportunistic infection and cause of death among people living with HIV/AIDS. Tuberculosis has been shown to be a good predictor of virological failure in this group. This study aimed to evaluate the incidence of tuberculosis and its consequences among individuals diagnosed with virological failure of HIV. This was a retrospective cohort study involving people living with HIV/AIDS being followed-up in an AIDS reference center in Salvador, Bahia, Brazil. Individuals older than 18 years with HIV infection on antiretroviral therapy for at least six months, diagnosed with virological failure (HIV-RNA greater than or equal to...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Tuberculosis; Virological failure; HIV infection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500562

Protective effect of metformin against tuberculosis infections in diabetic patients: an observational study of south Indian tertiary healthcare facility
Provedor de dados: 55
Autores: Marupuru,Srujitha; Senapati,Padmanav; Pathadka,Swathi; Miraj,Sonal Sekhar; Unnikrishnan,Mazhuvancherry Kesavan; Manu,Mohan K.
ABSTRACT  Background: World Health Organization estimated that people with diabetes (DM) are at 2-3 times higher risk for tuberculosis (TB). Studies have shown that DM not only increases the risk of active TB, but also puts co-affected persons at increased risk of poor outcomes.  Objectives: To determine the protective effect of metformin against TB in DM patients and also, to investigate the relationship between poor glycemic control and TB.  Methods: A case-control study was conducted over 8 months, where cases and controls were selected based on the inclusion and exclusion criteria of the study. The diabetics diagnosed with TB were selected as study group (SG = 152) and without TB were as control group (CG = 299). Exposure status of metformin in both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetes; Metformin; Tuberculosis prevention.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300312

High prevalence of hepatitis E virus antibodies in Sao Paulo, Southeastern Brazil: analysis of a group of blood donors representative of the general population
Provedor de dados: 55
Autores: Passos-Castilho,Ana Maria; Reinaldo,Mônica Renata; Sena,Anne de; Granato,Celso F.H.
Abstract Brazil is a non-endemic country for hepatitis E virus (HEV) infection with seroprevalence from 1% to 4% in blood donors and the general population. However, data on seroprevalence of HEV in the country are still limited. This study evaluated the prevalence of past or present HEV infection in a group of blood donors representative of the general population of the city of Sao Paulo, Southeastern Brazil. Serum samples from 500 blood donors were tested from July to September 2014 by serological and molecular methods. Anti-HEV IgG antibodies were detected in 49 (9.8%) subjects and categorized age groups revealed an age-dependent increase of HEV seroprevalence. Among the anti-HEV IgG positive subjects, only 1 had anti-HEV IgM while none tested positive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis E virus; Blood donors; Seroprevalence; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500535

Differential expression on mitochondrial tryparedoxin peroxidase (mTcTXNPx) in Trypanosoma cruzi after ferrocenyl diamine hydrochlorides treatments
Provedor de dados: 55
Autores: Kohatsu,Andréa A.N.; Silva,Flávia A.J.; Francisco,Acácio I.; Rimoldi,Aline; Silva,Marco T.A.; Vargas,Maria D.; Rosa,João A. da; Cicarelli,Regina M.B.
Abstract Resistance to benznidazole in certain strains of Trypanosoma cruzi may be caused by the increased production of enzymes that act on the oxidative metabolism, such as mitochondrial tryparedoxin peroxidase which catalyses the reduction of peroxides. This work presents cytotoxicity assays performed with ferrocenyl diamine hydrochlorides in six different strains of T. cruzi epimastigote forms (Y, Bolivia, SI1, SI8, QMII, and SIGR3). The last four strains have been recently isolated from triatominae and mammalian host (domestic cat). The expression of mitochondrial tryparedoxin peroxidase was analyzed by the Western blotting technique using polyclonal antibody anti mitochondrial tryparedoxin peroxidase obtained from a rabbit immunized with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trypanosoma cruzi; Ferrocenyl diamine hydrochlorides; Mitochondrial tryparedoxin peroxidase (mTcTXNPx); Oxidative stress mechanisms.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200125

First case of infection by metallo-β-lactamase-producing Pseudomonas aeruginosa in Mato Grosso do Sul, Brazil
Provedor de dados: 55
Autores: Ferreira,Kalinca Miranda; Rodrigues,Ana Claudia de Souza; Watanabe,Ana Carolina; Ferreira,Yanara Miranda; Chang,Marilene Rodrigues.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300359

A systematic review of East African-Indian family of Mycobacterium tuberculosis in Brazil
Provedor de dados: 55
Autores: Duarte,Tonya Azevedo; Nery,Joilda Silva; Boechat,Neio; Pereira,Susan Martins; Simonsen,Vera; Oliveira,Martha; Gomes,Maria Gabriela Miranda; Penha-Gonçalves,Carlos; Barreto,Mauricio Lima; Barbosa,Theolis.
ABSTRACT  Introduction: The Mycobacterium tuberculosis East African-Indian (EAI) spoligotyping family (belonging to lineage 1, Indo-Oceanic, defined by the region of deletion RD239) is distributed worldwide, but is more prevalent in Southeast Asia, India, and East Africa. Studies in Latin America have rarely identified EAI. In this study, we describe the occurrence of the EAI family in Brazil.  Methods: EAI was identified in a systematic literature review of genetic diversity studies pertaining to M. tuberculosis in Brazil, as well as in a survey conducted in Salvador, Bahia, located in the northeastern region of this country.  Results: The EAI6-BGD1 spoligotyping family and the EAI5 Spoligotype International Type (SIT) 1983 clade were the most frequently...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis; Phylogeography; Genotyping; Epidemiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300317

High HIV infection prevalence in a group of men who have sex with men
Provedor de dados: 55
Autores: Torres,Raquel Maria Cardoso; Cruz,Marly Marques da; Périssé,André Reynaldo Santos; Pires,Denise Ribeiro Franqueira.
ABSTRACT Brazil is characterized by a concentrated AIDS epidemic, it has a prevalence of less than 1% in the general population. However, there are higher rates in specific populations, especially in men who have sex with men. The study's aim was to analyze the association between sociodemographic characteristics, sexual practices, sexual behaviors and the HIV infection in a group of men who have sex with men. Secondary data was collected between June 2014 and September 2015 in a research of cross-sectional design in the city of Rio de Janeiro, Brazil. Volunteers answered an online computerized questionnaire and took HIV test. Chi-squared distribution and multiple logistic regression was used. There were 341 participants. Most of them were racially mixed,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Acquired Immunodeficiency Syndrome; Male homosexuality; Bisexuality; Sexual behavior; HIV serosorting.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600596

Vaccination coverage in a cohort of HIV-infected patients receiving care at an AIDS outpatient clinic in Espírito Santo, Brazil
Provedor de dados: 55
Autores: Pinto Neto,Lauro Ferreira da Silva; Vieira,Julia Vescovi; Ronchi,Nathália Rossoni.
Abstract This cross-sectional study assessed the immunization status of human immune deficiency virus (HIV)-infected patients receiving care at an outpatient clinic in Brazil. The sociodemographic characteristics, CD4 count and HIV viral load of 281 out of 612 adult outpatients were analyzed. A total of 331 patients were excluded because of no availability of vaccination cards. Chi-square or Fisher's exact test were used. Immunization coverage was higher for diphtheria/tetanus (59.79%) and hepatitis B (56.7%), and lowest for hepatitis A (6.8%) and for meningococcal group C (6%). Only 11.74% of the patients had received the influenza virus vaccine yearly since their HIV-infection diagnosis. No vaccination against influenza (p &lt; 0.034) or hepatitis B (p...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; AIDS; Vaccination; Immunization coverage; Immunosuppressed.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500515

An unusual imported case of diphyllobothriosis in Mexico
Provedor de dados: 55
Autores: Rodríguez-Pérez,Elba G.; Escandón-Vargas,Kevin; Castellanos,Jenniffer A.
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300355

Assessment of the effectiveness of a ventilator associated pneumonia prevention bundle that contains endotracheal tube with subglottic drainage and cuff pressure monitorization
Provedor de dados: 55
Autores: Akdogan,Ozlem; Ersoy,Yasemin; Kuzucu,Ciğdem; Gedik,Ender; Togal,Turkan; Yetkin,Funda.
ABSTRACT The effectiveness of prevention bundles on the occurrence and mortality of ventilator associated pneumonia (VAP) was evaluated in many studies. However, the effectiveness of endotracheal tube with subglottic secretion drainage (ETT-SD) and cuff pressure monitorization in VAP bundles have not been adequately assessed. In this study, we aimed to evaluate the effectiveness of VAP bundle containing ETT-SD and cuff pressure monitorization. This was a prospective, controlled study that was carried out between March 2011 and April 2012 including intubated patients. The study was conducted at the Anesthesiology Intensive Care Unit 1 and 2 (10 beds each) in a 898-bed university hospital. Occurrence of VAP and compliance with the parameters of the VAP...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ventilator associated pneumonia; VAP prevention bundles; Subglottic secretion drainage; Cuff pressure monitorization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300276

Next-generation sequencing virulome analysis of a Yersinia enterocolitica subsp. palearctica bioserotype 4/O:3 ST18 isolated from human blood in Brazil
Provedor de dados: 55
Autores: Rusak,Leonardo Alves; Junqueira,Ricardo Magrani; Hofer,Ernesto; Vallim,Deyse Christina; Asensi,Marise Dutra.
Abstract Yersinia enterocolitica is a widespread Gram-negative bacterium that causes gastrointestinal disease and other clinical manifestations in humans. Potentially pathogenic Y. enterocolitica has been isolated in Brazil, from human, environmental, food, and animal sources. Herein we report a genome sequence of Y. enterocolitica subsp. palearctica strain YE 19, serotype O:3, biotype 4, sequence type 18, with virulence determinants isolated from human blood in Rio de Janeiro in 2005. The results corroborate other findings that this strain harbors a set of virulence determinants that could play a role in host pathoadaptation and may also justify the successful dissemination of bioserotype 4/O:3 in Brazil. The presence of strains harboring all of these...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Yersinia enterocolitica; Virulence; Brazil; Next-generation sequencing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500550

Bartonella species pathogenic for humans infect pets, free-ranging wild mammals and their ectoparasites in the Caatinga biome, Northeastern Brazil: a serological and molecular study
Provedor de dados: 55
Autores: Fontalvo,Mariana Campos; Favacho,Alexsandra Rodrigues de Mendonça; Araujo,Andreina de Carvalho; Santos,Naylla Mayana dos; Oliveira,Glauber Meneses Barboza de; Aguiar,Daniel Moura; Lemos,Elba Regina Sampaio de; Horta,Mauricio Claudio.
ABSTRACT This study verified the occurrence of Bartonella spp. in dogs, cats, wild mammals and their ectoparasites in Petrolina and Lagoa Grande Counties, Pernambuco, located in a semi-arid region in Northeastern Brazil. Anti-Bartonella spp. antibodies were detected by indirect immunofluorescence assay (IFA) in 24.8% of dogs (27/109) and in 15% of cats (6/40). Bartonella sp. DNA was identified by PCR performed on DNA extracted from blood and ectoparasites using primers targeting Bartonella sp. gltA and ribC genes in 100% (9/9) of Pulex irritans from Cerdocyon thous, 57.4% (35/61) of P. irritans from dogs, 2.3% (1/43) of Ctenocephalides felis felis from dogs, 53.3% (24/45) of C. felis felis from cats, and 10% (1/10) of Polyplax spp. from Thrichomys...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bartonella; Flea; Tick; Lice; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300290

Quality of life, anxiety and depression in patients with HIV/AIDS who present poor adherence to antiretroviral therapy: a cross-sectional study in Salvador, Brazil
Provedor de dados: 55
Autores: Betancur,Mónica Narváez; Lins,Liliane; Oliveira,Irismar Reis de; Brites,Carlos.
Abstract The introduction of highly active antiretroviral therapy marked a major gain in efficacy of HIV/AIDS treatment and a reduction in morbidity and mortality of the infected patients. However, high levels of adherence are required to obtain virologic suppression. In Brazil, the policy of free and universal access to antiretroviral therapy has been in place since 1996, although there are reports of poor adherence.  Objective To define the clinical, demographic and psychological characteristics, and quality of life of patients with HIV/AIDS who present poor adherence to highly active antiretroviral therapy.  Methods This was a cross-sectional study. To be included in the study patients had to be 18 through 65 years old, diagnosed with HIV/AIDS, having...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Highly active antiretroviral therapy; HIV/AIDS; Adherence; Nonadherence; Anxiety; Depression; Quality of life.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500507

Association between the p53 arginine/arginine homozygous genotype at codon 72 and human papillomavirus E6/E7 mRNA expression
Provedor de dados: 55
Autores: Chuery,Ana Carolina Silva; Silva,Ismael Dale Cotrim Guerreiro da; Ribalta,Julisa Chamorro Lascasas; Speck,Neila Maria de Góis.
ABSTRACT  Objective: To evaluate the association between p53 polymorphisms and human papillomavirus (HPV) E6/E7 mRNA expression.  Methods: We analyzed 175 cervical samples from women aged 16-69 years old who were tested for HPV E6/E7 mRNA expression (NucliSENS® EasyQ® HPV). The samples were divided into three groups: positive (n = 75) those with positive HPV E6/E7 mRNA expression and positive high-risk HPV Hybrid Capture (HR-HC) test; negative (n = 52) those with negative HPV E6/E7 mRNA expression and positive HR-HC; and control (n = 48) those with negative HPV E6/E7 mRNA expression and negative HR-HC. The p53 polymorphisms at codons 11, 72, and 248 were evaluated through polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human papillomavirus; Oncoproteins; Genetic polymorphisms; P53 gene; Arginine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300248

Ureteral stent infections: a prospective study
Provedor de dados: 55
Autores: Altunal,Nilsun; Willke,Ayse; Hamzaoğlu,Onur.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300361

Unrecognized pediatric and adult family members of children with acute brucellosis
Provedor de dados: 55
Autores: Çiftdoğan,Dilek Yılmaz; Aslan,Selda.
Abstract  Background and aim Brucellosis is an infectious, contagious and zoonotic disease that occurs worldwide. The family members of an index case of brucellosis may be especially susceptible, due to sharing the same source of infection and similar risk factors for brucellosis. In this study, we propose to screen pediatric and adult family members of brucellosis index cases for detecting additional unrecognized infected family members.  Materials and methods 114 family members of 41 pediatric patients with brucellosis were evaluated. All family members completed a brief questionnaire and were tested by a standard tube agglutination test (STA).  Results The majority of family members (n = 96, 84.2%) were children. Among the 114 family members, 42 (36.8%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brucellosis; Screening; Unrecognized; Turkey.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500520

Aneurysm and dissection in a patient with syphilitic aortitis
Provedor de dados: 55
Autores: Pivatto Júnior,Fernando; Finkler,Bruno Schaaf; Torres,Felipe Soares; Schaefer,Pedro Guilherme; Sprinz,Eduardo.
ABSTRACT In the antibiotic era, aortic aneurysm is a rare complication of syphilis, what makes the diagnostic assumption even more difficult. Nonetheless, this condition should be suspected in patients with aortic aneurysm. Reports of aortic dissection complicating syphilitic aortitis have been distinctly rare in the literature, and their cause-effect relationship has not been definitely established. In this case report, we present a 62-year-old woman with aortic aneurysm and dissection associated with an unexpected diagnosis of syphilitic aortitis.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Syphilis Syphilis; Cardiovascular Aneurysm Dissection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300349

Community-acquired methicillin-resistant Staphylococcus aureus carrying SCCmec type IV and V isolated from healthy children attending public daycares in northeastern Brazil
Provedor de dados: 55
Autores: Carvalho,Suzi P. de; Almeida,Jéssica B. de; Andrade,Yasmin M.F.S.; Silva,Lucas S.C. da; Oliveira,Arianne C. de; Nascimento,Flávia S.; Campos,Guilherme B.; Oliveira,Márcio V.; Timenetsky,Jorge; Marques,Lucas M.
Abstract Nasal colonization with methicillin-resistant Staphylococcus aureus (MRSA) have increasingly been reported in healthy communities. This study aimed to assess the rate of S. aureus in general and MRSA in particular from nasal secretion of children in daycare centers in Vitória da Conquista, Brazil. The isolates were identified based on morphology, biochemical tests and by PCR. Detection of virulence genes, biofilm production, and susceptibility test by disk diffusion agar were performed. MRSA isolates were characterized by spa, SCCmec, and multilocus sequence typing (MLST). S. aureus were recovered from 70 (47.3%) of 148 children. Among the 11 MRSA strains (15.7%), two SCCmec types (IV and V) were detected. MLST identified four STs related to three...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: CA-MRSA; Antibiotic resistance; SCCmec; MLST.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400464

Factors associated with pain in individuals infected by human T-cell lymphotropic virus type 1 (HTLV-1)
Provedor de dados: 55
Autores: Santos,Dislene N. dos; Santos,Kionna O.B.; Paixão,Alaí B.; Andrade,Rosana Cristina P. de; Costa,Davi T.; S-Martin,Daniel L.; Sá,Katia N.; Baptista,Abrahão F.
Abstract  Introduction Despite the high prevalence of chronic pain in individuals infected with HTLV-1, predictive and protective factors for its development are still unclear.  Objective To identify factors associated with chronic pain in individuals with HTLV-1.  Methods This cross-sectional study was conducted in a reference center for treatment of patients infected with HTLV-1 in Salvador, Bahia, Brazil. The study included individuals infected with HTLV-1, over 18 years, and excluded those with difficulty to respond the pain protocol. Data on sociodemographic, health behavior, and clinical characteristics were collected in a standardized way. The prevalence ratio (PR) of pain is described, as well as the factors independently associated with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human T-cell lymphotropic virus type I (HTLV-1); Tropical spastic paraparesis; Retroviridae infections; Chronic pain.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200133

Malaria in Southern Brazil: a potential threat for a non-endemic region
Provedor de dados: 55
Autores: Moreira,Daisson L.; Cardoso,Jader C.; Deboni,Sandra C.; Falci,Diego R.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600678

Trends and predictors of HIV-1 acquired drug resistance in Minas Gerais, Brazil: 2002–2012
Provedor de dados: 55
Autores: Duani,Helena; Aleixo,Agdemir Waleria; Tupinambás,Unaí.
Abstract Several studies show that the prevalence of multidrug-resistant HIV-1 virus is declining over time. A retrospective cohort study was carried out to evaluate the trends of drug resistance in antiretroviral treatment-exposed individuals in a state of a middle-income country, Minas Gerais, southeast region of Brazil. We analyzed 2115 HIV-1 sequences from 2002 up to 2012, from 52 cities of Minas Gerais. The groups were analyzed according to the definitions: "IAS – 3 class mutations", if ≥1 drug resistance mutation from IAS 2015 list (DRM) was present in each class; "No fully susceptible drugs" as the absence of any fully susceptible drug in Stanford algorithm; and "GSS ≥ 2″, when a maximum calculated GSS (genotypic susceptibility score) was ≥2 or ≥3,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Antiretroviral; Resistance; Genotyping; Epidemiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200148

Effects of statins on the development of sepsis and organ dysfunction in hospitalized older patients in China
Provedor de dados: 55
Autores: Gui,Qifeng; Yang,Yunmei; Zhang,Jiajia.
ABSTRACT This study aimed to evaluate the protective role of statins on the development of sepsis and infection-related organ dysfunction and mortality in a hospitalized older Chinese population with bacterial infections. In this retrospective cohort study, 257 older patients with bacterial infection were divided into two groups: a statin group, those who had received statin therapy for ≥1 month before admission and continued receiving statin during hospitalization; and a non-statin group, those who had never received statin or used statin for &lt;1 month prior to admission. A multivariate logistic regression analysis was performed to identify risk and protective factors for severe sepsis. A significantly lower incidence of organ dysfunction was found in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mortality; Organ dysfunction; Older adults; Sepsis; Statins.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300255

Hospitalization rates, length of stay and in-hospital mortality in a cohort of HIV infected patients from Rio de Janeiro, Brazil
Provedor de dados: 55
Autores: Coelho,Lara E.; Ribeiro,Sayonara R.; Veloso,Valdilea G.; Grinsztejn,Beatriz; Luz,Paula M.
Abstract In this study, we evaluated trends in hospitalization rates, length of stay and in-hospital mortality in a cohort of HIV-infected patients in Rio de Janeiro, Brazil, from 2007 through 2013. Among the 3991 included patients, 1861 hospitalizations occurred (hospitalization rate of 10.44/100 person-years, 95% confidence interval 9.98–10.93/100 person-years). Hospitalization rates decreased annually (per year incidence rate ratio 0.92, 95% confidence interval 0.89–0.95) as well as length of stay (median of 15 days in 2007 vs. 11 days in 2013, p-value for trend &lt; 0.001), and in-hospital mortality (13.4% in 2007 to 8.1% in 2013, p-value for trend = 0.053). Our results show that, in a middle-income setting, hospitalization rates are decreasing over...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: HIV; Hospitalization; Length of stay; In-hospital mortality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200190

Serosurvey for canine visceral leishmaniasis in rural and urban areas of the Brazilian Legal Amazon
Provedor de dados: 55
Autores: Guimarães,Andresa; Raimundo,Juliana Macedo; Santos,Helciléia Dias; Machado,Rosangela Zacarias; Baldani,Cristiane Divan.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200207

Cardiovascular risk profile in patients with myelopathy associated with HTLV-1
Provedor de dados: 55
Autores: Prado,Fabio Luís Silva do; Prado,Renata; Ladeia,Ana Marice Teixeira.
ABSTRACT HAM/TSP (HTLV-1-associated myelopathy/tropical spastic paraparesis) is a slowly progressive disease, characterized by a chronic spastic paraparesis. It is not known if the disease carries an independent risk for cardiovascular disease. The objective of this study was to evaluate the cardiovascular risk profile related to HAM/TSP and compare it with the general population.  Methods: This was a cross-sectional study, with a control group. HAM/TSP patients were evaluated using cardiovascular risk scores (ASCVD RISK, SCORE and Framingham) and inflammatory markers (ultrasensitive CRP and IL-6), and compared with a control group of healthy individuals. We also evaluated the correlation between cardiovascular risk and the functional status of patients...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HTLV-1; HAM/TSP; Cardiovascular risk; C reactive protein; Interleukin-6.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300226

Complete substitution of the Brazilian endemic clone by other methicillin-resistant Staphylococcus aureus lineages in two public hospitals in Rio de Janeiro, Brazil
Provedor de dados: 55
Autores: Chamon,Raiane Cardoso; Ribeiro,Sthefanie da Silva; Costa,Thaina Miranda da; Nouér,Simone Aranha; Santos,Katia Regina Netto dos.
Abstract Staphylococcus aureus is an important cause of bloodstream infections. Therefore, the main purpose of this work was to characterize a collection of 139 S. aureus isolates from bloodstream infections in two public hospitals in relation to their antimicrobial susceptibility profile, staphylococcal cassette chromosome mec types, and clonal relationship. Methicillin resistance and resistance to other 12 agents were accessed by the disk diffusion test. Minimum inhibitory concentration to mupirocin was also determined. The SCCmec types were accessed by multiplex PCR, and the clonal relationship was determined by pulsed field gel electrophoresis method and restriction modification system characterization. Besides, multilocus sequence typing was performed...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Staphylococcus aureus; Bloodstream infections; USA100; Mupirocin resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200185

In vitro susceptibility of methicillin-resistant Staphylococcus aureus isolates from skin and soft tissue infections to vancomycin, daptomycin, linezolid and tedizolid
Provedor de dados: 55
Autores: Múnera,Johanna Marcela Vanegas; Ríos,Ana María Ocampo; Urrego,Daniela Montoya; Jiménez Quiceno,Judy Natalia.
Abstract  Introduction Treatment of multidrug-resistant Gram-positive infections caused by Staphylococcus aureus remains as a clinical challenge due to emergence of new resistance mechanisms. Tedizolid is a next-generation oxazolidinone, recently approved for skin and soft tissues infections. We conducted a study to determine in vitro susceptibility to vancomycin, daptomycin, linezolid and tedizolid in MRSA clinical isolates from adult patients with skin and soft tissue infections.  Material and methods Methicillin-resistant S. aureus isolates were collected in three tertiary-care hospitals of Medellin, Colombia, from February 2008 to June 2010 as part of a previous study. Clinical characteristics were assessed by medical records and MIC values were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MRSA; Skin and soft tissues infections; Tedizolid; Linezolid; Vancomycin; Daptomycin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500493

Development of a prototype immunochromatographic test for rapid diagnosis of respiratory adenovirus infection
Provedor de dados: 55
Autores: Paulini,Inarei; Siqueira-Silva,Joselma; Thomaz,Luciana; Rocha,Leticia; Harsi,Charlotte; Bellei,Nancy; Granato,Celso.
Abstract Human adenoviruses comprise an important group of etiologic agents that are responsible for various diseases in adults and children, such as respiratory, ocular, gastroenteric, and urinary infections. In immunocompromised and organ-transplanted individuals, these agents can cause generalized infections. Rapid diagnostic methods for detecting these infectious agents are not widely available.The aim of this work was to produce monoclonal and polyclonal anti-adenovirus antibodies to be used in a rapid diagnostic test for respiratory infections.Adenovirus hexons were satisfactorily purified by ultracentrifugation and chromatography. After virus purification, anti-hexon monoclonal antibodies were produced and characterized, following classical methods....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adenovirus; Monoclonal antibodies; Immunochromatographic test.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500500

Will Mayaro virus be responsible for the next outbreak of an arthropod-borne virus in Brazil?
Provedor de dados: 55
Autores: Esposito,Danillo Lucas Alves; Fonseca,Benedito Antonio Lopes da.
Abstract Mayaro virus is an alphavirus from the Togaviridae family and is transmitted mainly by Hemagogus mosquitoes. This virus circulates in high-density tropical forests or rural areas of Central and South America causing a disease characterized by high-grade fever, maculopapular skin rash and marked arthralgia that, in some patients, can persist for long periods after infection and may be misinterpreted as chikungunya. Although only a few outbreaks involving this virus have been reported, in the last years the number of Mayaro virus infections has increased in the central and northern regions of Brazil. In this review, we describe the reported prevalence of this infection over the years and discuss the circumstances that can contribute to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mayaro virus; Alphavirus; Chikungunya virus; Epidemiology; Outbreaks.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500540

Resistance among Gram-negative ESKAPE pathogens isolated from hospitalized patients with intra-abdominal and urinary tract infections in Latin American countries: SMART 2013-2015
Provedor de dados: 55
Autores: Karlowsky,James A.; Hoban,Daryl J.; Hackel,Meredith A.; Lob,Sibylle H.; Sahm,Daniel F.
ABSTRACT Gram-negative ESKAPE pathogens (Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) are important etiologic agents of nosocomial infection that are frequently resistant to broad-spectrum antimicrobial agents. Gram-negative ESKAPE pathogens were collected from hospitalized patients in 11 Latin American countries from 2013 to 2015 as part of the Study for Monitoring Antimicrobial Resistance Trends (SMART) global surveillance program. In total, 2113 isolates from intra-abdominal infections (IAI) and 970 isolates from urinary tract infections (UTI) were tested against antimicrobial agents using standardized CLSI broth microdilution methodology. Of the agents tested, amikacin demonstrated the highest rates...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Surveillance; SMART; Imipenem; Ertapenem.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300343

Humoral and cellular immune response of mice challenged with Yersinia pestis antigenic preparations
Provedor de dados: 55
Autores: Leal,Elida A.; Moreira,Josimar D.; Nunes,Fernanda F.; Souza,Larissa R.; Martins,Janaina M.; Toledo,Vicente P.C.; Almeida,Alzira M.P.; Guimarães,Tania M.P.
ABSTRACT  Objectives: The plague, which is an infectious disease caused by Yersinia pestis, still threatens many populations in several countries. The worldwide increase in human plague cases and the potential use of the bacteria as a biological weapon reinforce the need to study the immunity that is induced by potential vaccine candidates. To determine the immunogenicity of antigenic preparations based on the F1 protein and the total extract from Y. pestis, we assessed the role of these antigens in inducing an immune response.  Methods: The immunogenicity of antigenic preparations based on the Y. pestis (YP) total extract and the Y. pestis fraction 1 capsular antigen protein (F1) was determined in Swiss-Webster mice immunized with 40 µg or 20 µg for each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yersinia pestis; Antigens; Mice; Immune response; Vaccines.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600620

Identification of hepatitis B virus A1762T/G1764A double mutant strain in patients in Southern Brazil
Provedor de dados: 55
Autores: Silva Souza,Adaliany Cecília da; Souza Marasca,Giórgia de; Kretzmann-Filho,Nélson Alexandre; Dall-Bello,Aline; Kliemann,Dimas Alexandre; Tovo,Cristiane Valle; Veiga,Ana Beatriz Gorini da.
Abstract Infection by hepatitis B virus (HBV) is a worldwide public health problem. Chronic HBV infection with high viral replication may lead to cirrhosis and/or hepatocellular carcinoma. Mutant HBV strains, such as the HBV A1762T/G1764A double mutant, have been associated with poor prognosis and higher risk of the patient for developing cirrhosis and/or hepatocellular carcinoma. This study analyzed the presence of the HBV A1762T/G1764A double mutant in patients with chronic HBV and its association with clinical parameters such as viral load, aminotransferases, and HBV antigens. A total of 49 patients with chronic hepatitis B were included in the study, and the HBV A1762T/G1764A double mutant strain was detected in four samples (8.16%) by polymerase chain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis B; HBV; A1762T/G1764A mutation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500525

Low seroprevalence of Zika virus in Cameroonian blood donors
Provedor de dados: 55
Autores: Gake,Bouba; Vernet,Marie A.; Leparc-Goffart,Isabelle; Drexler,Jan Felix; Gould,Ernest A.; Gallian,Pierre; Lamballerie,Xavier de.
Abstract A Zika virus seroepidemiology study was performed in 1084 blood donors collected from August to October 2015 in six sites of Cameroon representing a large panel of eco-environments. Samples were tested using an anti-NS1 IgG ELISA detection kit and positives were further confirmed by seroneutralization. The observed global seroprevalence was low (around 5%, peaking at 10% and 7.7% in Douala and Bertoua, respectively) with risk factors associated with seropositivity pointing to the existence of a local (peri-)sylvatic cycle of transmission. These results call attention to the potential introduction and subsequent spread in African urban areas of Asian genotype Zika virus currently circulating in the Americas and adapted to transmission by...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Zika virus; Seroprevalence; Africa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400481

Comparison of the ACC/AHA and Framingham algorithms to assess cardiovascular risk in HIV-infected patients
Provedor de dados: 55
Autores: Pinto Neto,Lauro Ferreira da Silva; Dias,Fernanda Rezende; Bressan,Flavia Feres; Santos,Carolina Rocio Oliveira.
ABSTRACT The aim of this study was to compare the predictions of Framingham cardiovascular (CV) risk score (FRS) and the American College of Cardiology/American Heart Association (ACC/AHA) risk score in an HIV outpatient clinic in the city of Vitoria, Espirito Santo, Brazil. In a cross-sectional study 341 HIV infected patients over 40 years old consecutively recruited were interviewed. Cohen's kappa coefficient was used to assess agreement between the two algorithms. 61.3% were stratified as low risk by Framingham score, compared with 54% by ACC/AHA score (Spearman correlation 0.845; p &lt; 0.000). Only 26.1% were classified as cardiovascular high risk by Framingham compared to 46% by ACC/AHA score (Kappa = 0.745; p &lt; 0.039). Only one out of eight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cardiovascular disease; HIV; Co-morbidities; Non-AIDS events.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600577

Distribution of HBV subgenotypes in Ribeirão Preto, Southeastern Brazil: a region with history of intense Italian immigration
Provedor de dados: 55
Autores: Chachá,Silvana Gama Florencio; Gomes-Gouvêa,Michele Soares; Malta,Fernanda de Mello; Ferreira,Sandro da Costa; Villanova,Márcia Guimarães; Souza,Fernanda Fernandes; Teixeira,Andreza Correa; Passos,Afonso Dinis da Costa; Pinho,João Renato Rebello; Martinelli,Ana de Lourdes Candolo.
Abstract Hepatitis B virus (HBV) is distributed worldwide, with geographical variations regarding prevalence of the different genotypes. The aim of this study was to determine the HBV genotypes and subgenotypes circulating in Southeast Brazil and compare the genetic sequences found with HBV sequences previously described in the world. Sequences from 166 chronic HBV carriers were analyzed using the fragment constituted by 1306 base pairs comprising surface and polymerase regions of the HBV genome. The sequences obtained were submitted to phylogenetic analysis. HBV subgenotypes A1, A2, D1-D4, F2a, and F4 were found. HBV genotype D was the most frequent, found in 99 patients (58.4%). Within this group, subgenotype D3 was the most prevalent, in 73 patients...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis B virus; Genotype; Phylogenetics; Intra-familial transmission.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400424

Retrospective analysis of hepatitis B virus chronic infection in 247 patients: clinical stages, response to treatment and poor prognostic factors
Provedor de dados: 55
Autores: Cunha-Silva,Marlone; Marinho,Fábio R.T.; Oliveira,Paulo F.; Lopes,Tirzah M.; Sevá-Pereira,Tiago; Lorena,Sonia L.S.; Almeida,Jazon R.S.
Abstract  Background: Chronic hepatitis B is a major cause of cirrhosis, and the natural history of the disease has several clinical stages that should be thoroughly understood for the implementation of proper treatment. Nonetheless, curing the disease with antiviral treatment remains a challenge.  Aims: To describe the clinical course, response to treatment, and poor prognostic factors in 247 hepatitis B virus chronic infection patients treated in a tertiary hospital in Brazil.  Methods: This was a retrospective and observational study, by analyzing the medical records of HBV infected patients between January 2000 and January 2015.  Results: Most patients were male (67.2%) and 74.1% were HBeAg negative. Approximately 41% had cirrhosis and 8.5% were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis B; Clinical stages; Treatment; Liver cirrhosis; Hepatocellular carcinoma.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400441

Subcutaneous infection by Graphium basitruncatum in a heart transplant patient
Provedor de dados: 55
Autores: Fernández,Analía L.; Andres,Patricia O.; Veciño,Cecilia H.; Nagel,Claudia B.; Mujica,María Teresa.
ABSTRACT Graphium basitruncatum, a synanamorph of Pseudoallescheria has been rarely reported in human infections. We report a case of subcutaneous phaeohyphomycosis caused by this fungus in a heart transplant recipient. We also describe the phenotypic, molecular methods and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) used to achieve isolate identification.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Graphium basitruncatum; Phaeohyphomycosis; Heart transplant; Subcutaneous infection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600670

Incidence and treatment of methicillin-resistant S. aureus infection in cystic fibrosis patients: a cohort study
Provedor de dados: 55
Autores: Bittencourt,Paloma Horejs; Pimentel,Carlos Sidney Silva; Bonfim,Bianca Sampaio; Marostica,Paulo José; Souza,Edna Lúcia.
Abstract In Brazil the knowledge about methicillin-resistant Staphylococcus aureus infection in cystic fibrosis patients is scarce. This study aimed to determine the incidence of respiratory tract colonization and the identification rates after a standardized treatment. A retrospective cohort was performed highlighting the history of respiratory colonizations between January 2008 and June 2015. Patients under the age of 21 years with cystic fibrosis confirmed by sweat test or genetic study receiving care at the outpatient clinics of a Teaching Hospital were included. The treatment consisted of trimethoprim/sulfamethoxazole, rifampicin, nasal mupirocin and chlorhexidine 2%. The mean follow-up period was of 22.2 months and those with ≥3 negative cultures...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Antibiotic therapy; Methicillin-resistant Staphylococcus aureus; Brazil; Pediatrics: therapy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100107

The in vitro activity of ceftazidime-avibactam against 417 Gram-negative bacilli collected in 2014 and 2015 at a teaching hospital in São Paulo, Brazil
Provedor de dados: 55
Autores: Rossi,Flávia; Cury,Ana P.; Franco,Maria R.G.; Testa,Raymond; Nichols,Wright W.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000500569

Direct identification from positive blood broth culture by matrix-assisted laser desorption-ionization time-of-flight mass spectrometry (MALDI-TOF MS)
Provedor de dados: 55
Autores: Barberino,Maria Goreth; Silva,Marcio de Oliveira; Arraes,Ana Carolina Palmeiras; Correia,Luís Cláudio; Mendes,Ana Verena.
ABSTRACT Bloodstream infections (BSIs) are among the most concerning bacterial infections. They are one of the leading causes of morbidity and mortality, and occur in 30-70% of critical care patients. The prompt identification of the causative microorganism can help choosing the appropriate antimicrobial therapy that will lead to better clinical outcomes. Blood culture is one of the most relevant tests for microbiological diagnosis of bacterial infections. The introduction of the MALDI-TOF microbiological diagnosis significantly decreased the time of identifying microorganisms. However, it depends on the growth on solid culture medium. In this study, 538 bottles of positive blood cultures were evaluated to test the accuracy of an in house modified...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: MALDI-TOF; Blood culture; Bacterial identification.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300339

Clonal dissemination of vancomycin-resistant Enterococcus faecium ST412 in a Brazilian region
Provedor de dados: 55
Autores: Alves,Geraldo da Silva; Pereira,Monalessa Fábia; Bride,Lais de Lima; Nunes,Ana Paula Ferreira; Schuenck,Ricardo Pinto.
ABSTRACT Vancomycin-resistant Enterococcus faecium (VREfm) has emerged as an important global nosocomial pathogen, and this trend is associated with the spread of high-risk clones. Here, we determined the genetic and phenotypic features of 93 VREfm isolates that were obtained from patients in 13 hospitals in Vitória, Espírito Santo, Brazil, during 2012-2013. All the isolates were vancomycin-resistant and harbored the vanA gene. Only 6 (6.5%) of the VREfm isolates showed the ability to form biofilm. The 93 isolates analyzed belong to a single pulsed-field gel electrophoresis lineage and presented six subtypes. MLST genotyping showed that all VREfm belonged to ST412 (the high-risk clone, hospital-adapted). The present study describes the dissemination of...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Enterococcus faecium; VRE; ST412; Biofilm.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000600656

Virulence genes and genetic relationship of L. monocytogenes isolated from human and food sources in Brazil
Provedor de dados: 55
Autores: Almeida,Rosana Macedo de; Barbosa,André Victor; Lisbôa,Rodrigo de Castro; Santos,André Felipe das Mercês; Hofer,Ernesto; Vallim,Deyse Christina; Hofer,Cristina Barroso.
ABSTRACT The herein presented assay provided a bacteriological and molecular characterization of 100 samples of L. monocytogenes isolated from human (43) and food (57) sources, from several regions of Brazil, and collected between 1975 and 2013. Antigenic characterization defined 49% of serotype 4b samples, followed by 28% of serotype 1/2b, 14% of serotype 1/2c, 8% of serotype 1/2a, and 1% of serotype 3b. Both type of samples from human and food origin express the same serotype distribution. Multiplex PCR analysis showed 13 strains of type 4b with the amplification profile 4b-VI (Variant I). Virulence genes hly, inlA, inlB, inlC, inlJ, actA, plcA, and prfA were detected in all samples, highlighting a deletion of 105pb on the actA gene in 23% of serotype 4b...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Listeria monocytogenes; Listeriosis; Virulence; Food; PFGE; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300282

Epidemiological characteristics of seven respiratory viruses among pediatric patients with acute respiratory tract infections from 2011 to 2015 in Dongguan, Southern China
Provedor de dados: 55
Autores: Xie,Mingyu; Ma,Qiang; Chen,Xiuying; Lu,Xiaomei; Zhong,Baimao.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400486

Yellow fever outbreak in Brazil, 2017
Provedor de dados: 55
Autores: Goldani,Luciano Z.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200123

Asymptomatic and symptomatic embolic events in infective endocarditis: associated factors and clinical impact
Provedor de dados: 55
Autores: Monteiro,Thaíssa S.; Correia,Marcelo G.; Golebiovski,Wilma F.; Barbosa,Giovanna Ianini F.; Weksler,Clara; Lamas,Cristiane C.
ABSTRACT  Background: Embolic complications of infective endocarditis are common. The impact of asymptomatic embolism is uncertain.  Objectives: To determine the frequency of emboli due to IE and to identify events associated with embolism.  Methods: Retrospective analysis of an endocarditis database, prospectively implemented, with a post hoc study driven by analysis of data on embolic events. Data was obtained from the International Collaboration Endocarditis case report forms and additional information on embolic events and imaging reports were obtained from the medical records. Variables associated with embolism were analyzed by the statistical software R version 3.1.0.  Results: In the study period, 2006-2011, 136 episodes of definite infective...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infective endocarditis; Embolism; Asymptomatic embolism; Splenomegaly; Cardiac surgery; Splenectomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300240

Role of MyD88-adaptor-like gene polymorphism rs8177374 in modulation of malaria severity in the Pakistani population
Provedor de dados: 55
Autores: Rani,Asima; Nawaz,Syed Kashif; Irfan,Shazia; Arshad,Muhammad; Bashir,Razia; Shaheen,Najma.
Abstract  Introduction: The present study was designed to investigate the association between rs8177374 polymorphism and malaria symptoms due to exposure of Plasmodium vivax and Plasmodium falciparum.  Materials and methods: A total of 454 samples were included in the study (228 malaria patients and 226 healthy individuals). Malaria patients, divided into P. vivax and P. falciparum groups on the basis of the causative species of Plasmodium, were categorized into mild and severe on the basis of clinical outcomes according to WHO criteria. Healthy individuals were used as controls. Allele specific PCR based strategy was used for the identification of rs8177374 SNP.  Results: MyD88-adaptor-like gene polymorphism was associated with susceptibility to malaria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malaria; Plasmodium; Rs8177374; MAL; Pakistani population.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400418

Online continuing interprofessional education on hospital-acquired infections for Latin America
Provedor de dados: 55
Autores: Medina-Presentado,Julio C.; Margolis,Alvaro; Teixeira,Lucia; Lorier,Leticia; Gales,Ana C.; Pérez-Sartori,Graciela; Oliveira,Maura S.; Seija,Verónica; Paciel,Daniela; Vignoli,Rafael; Guerra,Silvia; Albornoz,Henry; Arteta,Zaida; Lopez-Arredondo,Antonio; García,Sofía.
Abstract  Introduction: Latin America is a large and diverse region, comprising more than 600 million inhabitants and one million physicians in over 20 countries. Resistance to antibacterial drugs is particularly important in the region. This paper describes the design, implementation and results of an international bi-lingual (Spanish and Portuguese) online continuing interprofessional interactive educational program on hospital-acquired infections and antimicrobial resistance for Latin America, supported by the American Society for Microbiology.  Methods: Participation, satisfaction and knowledge gain (through pre and post tests) were used. Moreover, commitment to change statements were requested from participants at the end of the course and three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Internet; Continuing education; Interprofessional education; MOOC; Hospital-acquired infections; Latin America.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200140

Safety and efficacy of a novel drug elores (ceftriaxone + sulbactam + disodium edetate) in the management of multi-drug resistant bacterial infections in tertiary care centers: a post-marketing surveillance study
Provedor de dados: 55
Autores: Chaudhary,Manu; Mir,Mohd Amin; Ayub,Shiekh Gazalla.
Abstract  Objective: In India, Elores (CSE-1034: ceftriaxone + sulbactam + disodium edetate) was approved as a broad spectrum antibiotic in year 2011 and is used for management of Extended Spectrum Beta Lactamases/Metallo Beta lactamases infections in tertiary care centers. The objective of this study was to investigate the efficacy of this drug in patients with Extended Spectrum Beta Lactamases/Metallo Beta lactamases infections and identify the incidence of adverse events in real clinical settings.  Methods: This Post Marketing Surveillance study was conducted at 17 centers across India and included 2500 patients of all age groups suffering from various bacterial infections and treated with Elores (CSE1034). Information regarding demographic, clinical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multi-drug resistance; Bacterial infections; IPD; CSE-1034.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400408

Tungiasis in a Colombian patient
Provedor de dados: 55
Autores: Díaz,Claudia J.; Escandón-Vargas,Kevin.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000400484

Virological suppression in children and adolescents is not influenced by genotyping, but depends on optimal adherence to antiretroviral therapy
Provedor de dados: 55
Autores: Abreu,Juliana Costa de; Vaz,Sara Nunes; Martins Netto,Eduardo; Brites,Carlos.
ABSTRACT  Objective: To evaluate the virological outcomes in children and adolescents infected with HIV-1 in Salvador, Bahia according to genotyping results.  Methods: We retrospectively evaluated the rates of virological suppression of children and adolescents submitted to HIV-1 genotyping test from January/2008 to December/2012. The participants were followed in the two referral centers for pediatric AIDS care, in Salvador, Brazil. Resistance mutations, drug sensitivity profiles, and viral subtypes were analyzed using the Stanford HIV-1 Drug Resistance Database. Adherence was estimated by drugs withdrawal at pharmacies of the two sites.  Results: 101 subjects were included: 35 (34.6%) were drug-naïve, and the remaining 66 were failing ART. In drug-naïve...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Children; Virological suppression; Genotyping; Adherence.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300219

Women with recurrent spontaneous abortion have decreased 25(OH) vitamin D and VDR at the fetal-maternal interface
Provedor de dados: 56
Autores: Li,N.; Wu,H.M.; Hang,F.; Zhang,Y.S.; Li,M.J.
Immunological mechanisms have been proposed to underlie the pathogenesis of recurrent spontaneous abortion (RSA). Vitamin D has a potent immunomodulatory effect, which may affect pregnancy outcome. The objective of this study was to investigate 25-hydroxyvitamin D [25(OH) D] concentration and vitamin D receptor (VDR) expression in the decidual tissues of RSA patients. Thirty women with RSA (RSA group) and thirty women undergoing elective abortion (control group) were recruited during 2016 from gynecology outpatient clinics. We measured 25(OH) D, interleukin (IL)-17, IL-23, transforming growth factor β (TGF-β), VDR and 1-α-hydroxylase (CYP27B1) in decidual tissues collected during the abortion procedure. In the RSA group, 25(OH) D and TGF-β were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Recurrent spontaneous abortion (RSA); Treg/Th17 cells; Maternal-fetal interface; 25(OH) D; Vitamin D metabolism.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100606

Monoterpenoids (thymol, carvacrol and S-(+)-linalool) with anesthetic activity in silver catfish (Rhamdia quelen): evaluation of acetylcholinesterase and GABAergic activity
Provedor de dados: 56
Autores: Bianchini,A.E.; Garlet,Q.I.; da Cunha,J.A.; Bandeira Junior,G.; Brusque,I.C.M.; Salbego,J.; Heinzmann,B.M.; Baldisserotto,B.
This study evaluated the anesthetic potential of thymol and carvacrol, and their influence on acetylcholinesterase (AChE) activity in the muscle and brain of silver catfish (Rhamdia quelen). The AChE activity of S-(+)-linalool was also evaluated. We subsequently assessed the effects of thymol and S-(+)-linalool on the GABAergic system. Fish were exposed to thymol and carvacrol (25, 50, 75, and 100 mg/L) to evaluate time for anesthesia and recovery. Both compounds induced sedation at 25 mg/L and anesthesia with 50–100 mg/L. However, fish exposed to carvacrol presented strong muscle contractions and mortality. AChE activity was increased in the brain of fish at 50 mg/L carvacrol and 100 mg/L thymol, and decreased in the muscle at 100 mg/L carvacrol....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AChE; Anesthesia; Benzodiazepine; Fish; GABAA; Terpenoids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200610

Rimonabant improves metabolic parameters partially attributed to restoration of high voltage-activated Ca2+ channels in skeletal muscle in HFD-fed mice
Provedor de dados: 56
Autores: Chen,B.; Hu,N.
Cannabinoid type 1 receptor (CB1R) inhibition tends to be one of the promising strategies for the treatment of obesity and other related metabolic disorders. Although CB1R inhibition may cause adverse psychiatric effects including depression and anxiety, the investigation of the role of peripheral CB1R on weight loss and related metabolic parameters are urgently needed. We first explored the effect of rimonabant, a selective CB1R antagonist/inverse agonist, on some metabolic parameters in high fat-diet (HFD)-induced obesity in mice. Then, real-time PCR and electrophysiology were used to explore the contribution of high voltage-activated Ca2+ channels (HVACCs), especially Cav1.1, on rimonabant's effect in skeletal muscle (SM) in HFD-induced obesity....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cannabinoid receptor type 1; Obesity; Rimonabant; Skeletal Muscle; HVA calcium channel.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600602

Excavation of attractor modules for nasopharyngeal carcinoma via integrating systemic module inference with attract method
Provedor de dados: 56
Autores: Jiang,T.; Jiang,C.-Y.; Shu,J.-H.; Xu,Y.-J.
The molecular mechanism of nasopharyngeal carcinoma (NPC) is poorly understood and effective therapeutic approaches are needed. This research aimed to excavate the attractor modules involved in the progression of NPC and provide further understanding of the underlying mechanism of NPC. Based on the gene expression data of NPC, two specific protein-protein interaction networks for NPC and control conditions were re-weighted using Pearson correlation coefficient. Then, a systematic tracking of candidate modules was conducted on the re-weighted networks via cliques algorithm, and a total of 19 and 38 modules were separately identified from NPC and control networks, respectively. Among them, 8 pairs of modules with similar gene composition were selected, and 2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nasopharyngeal carcinoma; Protein-protein interaction; Attract; Module; Cell division.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800602

Duodenal-jejunal bypass normalizes pancreatic islet proliferation rate and function but not hepatic steatosis in hypothalamic obese rats
Provedor de dados: 56
Autores: Cantelli,K.R.; Soares,G.M.; Ribeiro,R.A.; Balbo,S.L.; Lubaczeuski,C.; Boschero,A.C.; Araújo,A.C.F.; Bonfleur,M.L.
Modifications in life-style and/or pharmacotherapies contribute to weight loss and ameliorate the metabolic profile of diet-induced obese humans and rodents. Since these strategies fail to treat hypothalamic obesity, we have assessed the possible mechanisms by which duodenal-jejunal bypass (DJB) surgery regulates hepatic lipid metabolism and the morphophysiology of pancreatic islets, in hypothalamic obese (HyO) rats. During the first 5 days of life, male Wistar rats received subcutaneous injections of monosodium glutamate (4 g/kg body weight, HyO group), or saline (CTL). At 90 days of age, HyO rats were randomly subjected to DJB (HyO DJB group) or sham surgery (HyO Sham group). HyO Sham rats were morbidly obese, insulin resistant, hypertriglyceridemic and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Duodenal-jejunal bypass; Hepatic fatty acid metabolism; Hypothalamic obesity; Ki67; Insulin secretion.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500601

Therapy of tacrolimus combined with corticosteroids in idiopathic membranous nephropathy
Provedor de dados: 56
Autores: Cui,W.; Lu,X.; Min,X.; Liu,M.; Guan,S.; Wang,Y.; Luo,M.; Li,W.; Li,Q.; Dong,W.; Miao,L.; Luo,P.
We evaluated the efficacy and safety of tacrolimus (TAC) combined with corticosteroids in treating patients with idiopathic membranous nephropathy (IMN). One hundred seventy-seven biopsy-proven IMN patients were recruited in this retrospective clinical study. Sixty patients received TAC (target blood concentration of 4–8 ng/mL) and 117 patients received daily cyclophosphamide (CYC, 100 mg) combined with prednisone. Remission rates at the end of the first, second and third month in the TAC group were significantly higher than that in the CYC group (1st: 35.0 vs 19.7%, P&lt;0.05; 2nd: 56.7 vs 38.5%, P&lt;0.05; 3rd: 76.7 vs 59.0%, P&lt;0.05). In the first 3 months, daily urinary protein and serum albumin in the TAC group obtained a better improvement than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyclophosphamide; Efficacy; Idiopathic membranous nephropathy; Retrospective clinical study; Tacrolimus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400703

Collaborative care model improves self-care ability, quality of life and cardiac function of patients with chronic heart failure
Provedor de dados: 56
Autores: Hua,C.Y.; Huang,Y.; Su,Y.H.; Bu,J.Y.; Tao,H.M.
Chronic heart failure (CHF) is a common chronic disease that requires much care. This study aimed to explore the effects of collaborative care model (CCM) on patients with CHF. A total of 114 CHF patients were enrolled in this study, and were randomly and equally divided into two groups: control and experimental. Patients in the two groups received either usual care or CCM for 3 continuous months. The impacts of CCM on the self-care ability and quality of life were assessed using self-care of heart failure index and short form health survey 12, respectively. Further, cardiac function was assessed by measuring left ventricular ejection fraction (LVEF) and the level of N-terminal pro-B-type natriuretic peptide (NT-proBNP), and by the 6-min walking test....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Collaborative care model; Chronic heart failure; Self-care; Quality of life; Cardiac function.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100609

Ischemic preconditioning vs adenosine vs prostaglandin E1 for protection against liver ischemia/reperfusion injury
Provedor de dados: 56
Autores: Radojkovic,M.; Stojanovic,M.; Stanojevic,G.; Radojkovic,D.; Gligorijevic,J.; Ilic,I.; Stojanovic,N.
Ischemia/reperfusion injury is still a major cause of morbidity and mortality during liver surgery and transplantation. A variety of surgical and pharmacological therapeutic strategies have been investigated to minimize the effects of ischemia/reperfusion. The aim of our study was to analyze and compare preventive influences of ischemic preconditioning, adenosine and prostaglandin E1 in the experimental model of hepatic ischemia/reperfusion injury. Adult chinchilla rabbits were divided into four groups: 10 rabbits subjected to liver ischemic preconditioning (3-min period of inflow occlusion followed by a 5-min period of reperfusion) followed by 45 min of Pringle maneuver; 10 rabbits subjected to pre-treatment with intraportal injection of adenosine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Liver ischemia/reperfusion injury; Ischemic preconditioning; Adenosine; Prostaglandin E1; Protection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800611

Decreased platelet responsiveness to clopidogrel correlates with CYP2C19 and PON1 polymorphisms in atherosclerotic patients
Provedor de dados: 56
Autores: Marchini,J.F.M.; Pinto,M.R.; Novaes,G.C.; Badran,A.V.; Pavão,R.B.; Figueiredo,G.L.; Lago,I.M.; Lima-Filho,M.O.; Lemos,D.C.; Tonani,M.; Antloga,C.M.; Oliveira,L.; Lorenzi,J.C.; Marin-Neto,J.A.
Clopidogrel and aspirin are the most commonly used medications worldwide for dual antiplatelet therapy after percutaneous coronary intervention. However, clopidogrel hyporesponsiveness related to gene polymorphisms is a concern. Populations with higher degrees of genetic admixture may have increased prevalence of clopidogrel hyporesponsiveness. To assess this, we genotyped CYP2C19, ABCB1, and PON1 in 187 patients who underwent percutaneous coronary intervention. Race was self-defined by patients. We also performed light transmission aggregometry with adenosine diphosphate (ADP) and arachidonic acid during dual antiplatelet therapy. We found a significant difference for presence of the CYP2C19*2 polymorphism between white and non-white patients. Although 7%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Platelet function tests; Single nucleotide polymorphism; Percutaneous coronary intervention; Aspirin; Clopidogrel.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100702

Different levels of brain-derived neurotrophic factor and cortisol in healthy heavy smokers
Provedor de dados: 56
Autores: Neves,C.D.C.; Lacerda,A.C.R.; Lima,L.P.; Lage,V.K.S.; Balthazar,C.H.; Leite,H.R.; Mendonça,V.A.
Studies suggest that brain-derived neurotrophic factor (BDNF) and the hypothalamic-pituitary-adrenal (HPA) axis modulate dopaminergic activity in response to nicotine and that the concentrations of BDNF and cortisol seem to be dependent on the amount and duration of smoking. Therefore, we investigated BDNF and cortisol levels in smokers ranked by daily cigarette consumption. Twenty-seven adult males (13 non-smokers and 14 smokers) participated in the study. The smokers were divided in two groups: light (n=7) and heavy smokers (n=7). Anthropometric parameters and age were paired between the groups, and plasma BDNF and salivary cortisol levels were measured. Saliva samples were collected on awakening, 30 min after awakening, at 10:00 and 12:00 am, 5:00 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BDNF; Nicotine consumption; HPA axis; Addiction; Reward system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200608

FAMLF is a target of miR-181b in Burkitt lymphoma
Provedor de dados: 56
Autores: Li,J.G.; Ding,Y.; Huang,Y.M.; Chen,W.L.; Pan,L.L.; Li,Y.; Chen,X.L.; Chen,Y.; Wang,S.Y.; Wu,X.N.
Burkitt lymphoma (BL) is a highly malignant non-Hodgkin's lymphoma that is closely related to the abnormal expression of genes. Familial acute myelogenous leukemia related factor (FAMLF; GenBank accession No. EF413001.1) is a novel gene that was cloned by our research group, and miR-181b is located in the intron of the FAMLF gene. To verify the role of miR-181b and FAMLF in BL, RNAhybrid software was used to predict target site of miR-181b on FAMLF and real-time quantitative PCR (RQ-PCR) was used to detect expression of miR-181b and FAMLF in BL patients, Raji cells and unaffected individuals. miR-181b was then transfected into Raji and CA46 cell lines and FAMLF expression was examined by RQ-PCR and western blotting. Further, Raji cells viability and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Burkitt lymphoma; FAMLF; MiR-181b; Gene expression; RQ-PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600701

Primary cultures of mouse small intestinal epithelial cells using the dissociating enzyme type I collagenase and hyaluronidase
Provedor de dados: 56
Autores: Ren,H.J.; Zhang,C.L.; Liu,R.D.; Li,N.; Li,X.G.; Xue,H.K.; Guo,Y.; Wang,Z.Q.; Cui,J.; Ming,L.
The epithelium is a highly dynamic system, which plays a crucial role in the homeostasis of the intestinal tract. However, studies on the physiological and pathophysiological functions of intestinal epithelial cells (IECs) have been hampered due to lack of normal epithelial cell models. In the present study, we established a reproducible method for primary culture of mouse IECs, which were isolated from the viable small intestinal crypts of murine fetuses (on embryonic day 19), using type I collagenase and hyaluronidase in a short span of time (≤20 min). With this method, continuously growing mouse IECs, which can be subcultured over a number of passages, were obtained. The obtained cell lines formed a tight cobblestone-like arrangement, displayed long and...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Intestinal epithelial cells; Crypt; Isolation; Primary culture; Collagenase I; Hyaluronidase.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500604

MicroRNA-143 inhibits cell growth by targeting ERK5 and MAP3K7 in breast cancer
Provedor de dados: 56
Autores: Zhou,L.L.; Dong,J.L.; Huang,G.; Sun,Z.L.; Wu,J.
This study aimed to investigate the function and mechanism of microRNA-143 (miR-143) in the occurrence and development of breast cancer (BC). A total of 30 BC tissues, 30 corresponding noncancerous tissues, and 10 normal control (NC) breast tissues were obtained to detect the levels of miR-143, extracellular signal-regulated kinase 5 (ERK5) and mitogen-activated protein 3 kinase 7 (MAP3K7) using RT-qPCR, western blotting or immunohistochemistry. The correlation of miR-143 with ERK5 or MAP3K7 was evaluated using Pearson correlation analysis. MCF-7 cells were transiently transfected with miR-143 mimic, miR-143 inhibitor, miR-143 mimic/inhibitor + si-ERK5, si-MAP3K7 or si-cyclin D1. Then, cell growth was evaluated by MTT assay and the expressions of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extracellular signal-regulated kinase 5; Mitogen-activated protein 3 kinase 7; MiRNA-143; Breast cancer; Cyclin D1.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800608

Biological X-ray irradiator characterization for use with small animals and cells
Provedor de dados: 56
Autores: Bruno,A. Colello; Mazaro,S.J.; Amaral,L.L.; Rego,E.M.; Oliveira,H.F.; Pavoni,J.F.
This study presents the characterization of an X-ray irradiator through dosimetric tests, which confirms the actual dose rate that small animals and cells will be exposed to during radiobiological experiments. We evaluated the linearity, consistency, repeatability, and dose distribution in the positions in which the animals or cells are placed during irradiation. In addition, we evaluated the performance of the X-ray tube (voltage and tube operating current), the radiometric survey (leakage radiation) and safety devices. The irradiator default setting was established as 160 kV and 25 mA. Tests showed that the dose rate was linear overtime (R2=1) and remained stable for long (constant) and short (repeatability) intervals between readings. The mean dose rate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: X-ray irradiator; Dosimetric characterization; Radiotherapy; Dosimetry; Radiochromic film.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300607

Influence of schooling and age on cognitive performance in healthy older adults
Provedor de dados: 56
Autores: Bento-Torres,N.V.O.; Bento-Torres,J.; Tomás,A.M.; Costa,V.O.; Corrêa,P.G.R.; Costa,C.N.M.; Jardim,N.Y.V.; Picanço-Diniz,C.W.
Few studies have examined the influence of a low level of schooling on age-related cognitive decline in countries with wide social and economic inequalities by using the Cambridge Automated Neuropsychological Test Battery (CANTAB). The aim of the present study was to assess the influence of schooling on age-related cognitive decline using unbiased cognitive tests. CANTAB allows cognitive assessment across cultures and education levels with reduced interference of the examiner during data acquisition. Using two-way ANOVA, we assessed the influences of age and education on test scores of old adults (61–84 years of age). CANTAB tests included: Visual Sustained Attention, Reaction Time, Spatial Working Memory, Learning and Episodic Memory. All subjects had a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age-related cognitive decline; Primary prevention; Education; Neuropsychological tests; Memory; Neuroscience; CANTAB.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400702

Recombinant 60-kDa heat shock protein from Paracoccidioides brasiliensis: is it a good antigen for serological diagnosis of paracoccidioidomycosis?
Provedor de dados: 56
Autores: Peron,G.; Fernandes,F.F.; Landgraf,T.N.; Martinez,R.; Panunto-Castelo,A.
Paracoccidioides brasiliensis and P. lutzii are fungi that cause paracoccidioidomycosis (PCM), the most prevalent systemic mycosis in South America. For serological diagnosis, although 43-kDa glycoprotein (gp43) is regarded as highly specific for PCM, the occurrence of false negative reactions in sera from patients infected with P. lutzii suggests that preparation with only one antigen is not recommended. Heat shock proteins are feasible alternatives as a second antigen because they are often highly immunogenic. In this study, we evaluated the usefulness of recombinant 60-kDa heat shock protein from P. brasiliensis (rPbHsp60) for the serological diagnosis of PCM. Using western blotting assay, we observed that 77.3% of the sera from PCM patients were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paracoccidioidomycosis; Heat shock protein; Serodiagnosis; ELISA; Western blotting.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400705

Etanercept protects rat cardiomyocytes against hypertrophy by regulating inflammatory cytokines secretion and cell apoptosis
Provedor de dados: 56
Autores: Li,Q.; Yu,Q.; Na,R.; Liu,B.
We aimed to investigate the effect of etanercept, a tumor necrosis factor-α (TNF-α) inhibitor, on rat cardiomyocyte hypertrophy and its underlying mechanism. Primary neonatal rat cardiomyocytes were isolated from Sprague-Dawley rats. The model of rat cardiomyocyte hypertrophy was induced by endothelin, and then treated with different concentrations of etanercept (1, 10, and 50 μM). After treatment, cell counts, viability and cell apoptosis were evaluated. The mRNA levels of myocardial hypertrophy marker genes, including atrial natriuretic factor (ANF), matrix metalloproteinase (MMP)-9 and MMP-13, were detected by qRT-PCR, and the expressions of apoptosis-related proteins (Bcl-2 and Bax) were measured by western blotting. The protein levels of transforming...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tumor necrosis factor-α inhibitor; Endothelin; Myocardial hypertrophy; Cell apoptosis; Inflammatory response.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600604

Long-term effects of human amniotic membrane in a rat model of biliary fibrosis
Provedor de dados: 56
Autores: Sant'Anna,L.B.; Brito,F.S.; Barja,P.R.; Nicodemo,M.C.
Liver fibrosis is the most common outcome of chronic liver diseases, and its progression to cirrhosis can only be effectively treated with liver transplantation. The amniotic membrane (AM) has been studied as an alternative therapy for fibrosis diseases mainly for its favorable properties, including anti-inflammatory, anti-scaring and immunomodulatory properties. It was recently demonstrated that the AM reduces the progression of biliary fibrosis to its advanced stage, cirrhosis, when applied on the liver for 6 weeks after fibrosis induction. Here, we investigated the effects of AM on rat fibrotic liver, during a prolonged period of time. Fibrosis was induced by bile duct ligation (BDL), and at the same time, a fragment of AM was applied around the liver....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amniotic membrane; Bile duct ligation; Liver fibrosis; Long-term; Quantitative image analysis; Rat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700611

Upregulation of microRNA 142-3p in the peripheral blood and urinary cells of kidney transplant recipients with post-transplant graft dysfunction
Provedor de dados: 56
Autores: Domenico,T.D.; Joelsons,G.; Montenegro,R.M.; Manfro,R.C.
We analyzed microRNA (miR)-142-3p expression in leucocytes of the peripheral blood and urinary sediment cell samples obtained from kidney transplant recipients who developed graft dysfunction. Forty-one kidney transplant recipients with kidney graft dysfunction and 8 stable patients were included in the study. The groups were divided according to histological analysis into acute rejection group (n=23), acute tubular necrosis group (n=18) and stable patients group used as a control for gene expression (n=8). Percutaneous biopsies were performed and peripheral blood samples and urine samples were obtained. miR-142-3p was analyzed by real-time polymerase chain reaction. The group of patients with acute tubular necrosis presented significantly higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MicroRNA; Graft dysfunction; Renal transplantation; Gene expression; Biomarker.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400605

Bone mineral density and inflammatory bowel disease severity
Provedor de dados: 56
Autores: Lima,C.A.; Lyra,A.C.; Mendes,C.M.C.; Lopes,M.B.; Coqueiro,F.G.; Rocha,R.; Santana,G.O.
Inflammatory bowel disease (IBD) is associated with low bone mineral density (BMD). In this study, the association between disease severity and BMD in patients with IBD was evaluated. Associations between BMD and the Montreal classification, disease activity and drug therapy were also tested. A cross-sectional prevalence study with a comparison group was conducted. One hundred and twenty-eight patients were evaluated: 68 patients with ulcerative colitis (UC), and 60 with Crohn's disease (CD). The control group consisted of 67 healthy subjects. All patients and controls had BMD measured and in IBD patients, current medications, hospitalization, and disease location, extent and phenotype, according to the Montreal classification, were recorded. Multiple...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Ulcerative colitis; Crohn’s disease; Inflammatory bowel disease; Osteoporosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200614

Identification of IgE and IgG1 specific antigens in Echinococcus granulosus cyst fluid
Provedor de dados: 56
Autores: Li,S.; Qian,R.; Wang,S.; Ye,J.; Zheng,H.
Cystic echinococcosis (CE) is an anthropozoonotic disease with worldwide distribution and is caused by the cestode Echinococcus granulosus. Anaphylactic shock induced by CE rupture is a serious complication especially in patients with hydatid infections, as the resulting leakage of fluid contains highly toxic endogenous antigen. We aimed to isolate and identify the antigens of specific IgE and IgG1 (sIgE and sIgG1) in E. granulosus cyst fluid (EgCF). Crude antigen for EgCF was prepared from E. granulosus-infected sheep liver. Antigens were separated and identified by one-dimensional sodium dodecyl sulfate-polyacrylamide gel electrophoresis (1D SDS-PAGE), two-dimensional gel electrophoresis (2-DE), and immunoblotting. Results of 1D SDS-PAGE and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cystic echinococcosis; Anaphylactic shock; Specific antigens; Specific antibody.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700701

Roles of monocyte chemotactic protein 1 and nuclear factor-κB in immune response to spinal tuberculosis in a New Zealand white rabbit model
Provedor de dados: 56
Autores: Guo,X.H.; Bai,Z.; Qiang,B.; Bu,F.H.; Zhao,N.
This study aimed to explore the roles of monocyte chemotactic protein 1 (MCP-1) and nuclear factor kappa B (NF-κB) in immune response to spinal tuberculosis in a New Zealand white rabbit model. Forty-eight New Zealand white rabbits were collected and divided into four groups: experimental group (n=30, spinal tuberculosis model was established), the sham group (n=15, sham operation was performed) and the blank group (n=3). The qRT-PCR assay and western blotting were applied to detect the mRNA and protein expressions of MCP-1 and NF-κB in peripheral blood. ELISA was used to measure serum levels of MCP-1, NF-κB, IFN-γ, IL-2, IL-4, and IL-10. Flow cytometry was adopted to assess the distributions of CD4+, CD8+ lymphocytes and CD4+ CD25+ Foxp3 lymphocyte...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monocyte chemotactic protein 1; Nuclear factor-κB; Spinal tuberculosis; Immune response.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300602

N-acetylcysteine downregulates phosphorylated p-38 expression but does not reverse the increased superoxide anion levels in the spinal cord of rats with neuropathic pain
Provedor de dados: 56
Autores: Horst,A.; de Souza,J.A.; Santos,M.C.Q.; Riffel,A.P.K.; Kolberg,C.; Ribeiro,M.F.M.; de Fraga,L.S.; Partata,W.A.
We determined the effect of N-acetylcysteine (NAC) on the expression of the phosphorylated p38 (p-p38) protein and superoxide anion generation (SAG), two important players in the processing of neuropathic pain, in the lumbosacral spinal cord of rats with chronic constriction injury (CCI)-induced neuropathic pain. The sciatic functional index (SFI) was also measured to assess the functional recovery post-nerve lesion. Thirty-six male Wistar rats were divided equally into the following groups: Naive (rats did not undergo surgical manipulation); Sham (rats in which all surgical procedures involved in CCI were used except the ligature), and CCI (rats in which four ligatures were tied loosely around the right common sciatic nerve), which received 2, 4, or 8...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sciatic functional index; Chronic constriction; Sciatic nerve; Mitogen-activated protein kinase; Antinociception; Mechanical threshold.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200605

Telomere length analysis in monoclonal B-cell lymphocytosis and chronic lymphocytic leukemia Binet A
Provedor de dados: 56
Autores: Furtado,F.M.; Scheucher,P.S.; Santana,B.A.; Scatena,N.F.; Calado,R.T.; Rego,E.M.; Matos,D.M.; Falcão,R.P.
Monoclonal B-cell lymphocytosis (MBL) is an asymptomatic clinical entity characterized by the proliferation of monoclonal B cells not meeting the diagnosis criteria for chronic lymphocytic leukemia (CLL). MBL may precede the development of CLL, but the molecular mechanisms responsible for disease progression and evolution are not completely known. Telomeres are usually short in CLL and their attrition may contribute to disease evolution. Here, we determined the telomere lengths of CD5+CD19+ cells in MBL, CLL, and healthy volunteers. Twenty-one CLL patients, 11 subjects with high-count MBL, and 6 with low-count MBL were enrolled. Two hundred and sixty-one healthy volunteers aged 0 to 88 years were studied as controls. After diagnosis confirmation, a flow...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Chronic lymphocytic leukemia; Monoclonal B-cell lymphocytosis; Telomere length.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500603

Time course of changes in heart rate and blood pressure variability in rats with myocardial infarction
Provedor de dados: 56
Autores: Aires,R.; Pimentel,E.B.; Forechi,L.; Dantas,E.M.; Mill,J.G.
Our aim was to determine the time course of changes in autonomic balance in the acute (1 and 3 days), sub-acute (7 days) and chronic (28 days) phases of myocardial infarction (MI) in rats. Autonomic balance was assessed by temporal and spectral analyses of blood pressure variability (BPV) and heart rate variability (HRV). Pulsatile blood pressure (BP) recordings (30 min) were obtained in awake and unrestrained male Wistar rats (N = 77; 8-10 weeks old) with MI (coronary ligature) or sham operation (SO). Data are reported as means±SE. The high frequency (HF) component (n.u.) of HRV was significantly lower in MI-1- (P&lt;0.01) and MI-3-day rats (P&lt;0.05) than in their time-control groups (SO-1=68±4 vs MI-1=35.3±4.3; SO-3=71±5.8 vs MI-3=45.2±3.8), without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myocardial infarction; Heart rate variability; Blood pressure variability; Autonomic nervous system; Heart failure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100605

Minimal residual disease detection in Tunisian B-acute lymphoblastic leukemia based on immunoglobulin gene rearrangements
Provedor de dados: 56
Autores: Besbes,S.; Hamadou,W.S.; Boulland,M.L.; Youssef,Y.B.; Achour,B.; Regaieg,H.; Khelif,A.; Fest,T.; Soua,Z.
IGH gene rearrangement and IGK-Kde gene deletion can be used as molecular markers for the assessment of B lineage acute lymphoblastic leukemia (B-ALL). Minimal residual disease detected based on those markers is currently the most reliable prognosis factor in B-ALL. The aim of this study was to use clonal IGH/IGK-Kde gene rearrangements to confirm B-ALL diagnosis and to evaluate the treatment outcome of Tunisian leukemic patients by monitoring the minimal residual disease (MRD) after induction chemotherapy. Seventeen consecutive newly diagnosed B-ALL patients were investigated by multiplex PCR assay and real time quantitative PCR according to BIOMED 2 conditions. The vast majority of clonal VH-JH rearrangements included VH3 gene. For IGK deletion, clonal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IGH gene; IGK gene; B-ALL minimal residual disease (MRD); RQ-PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100703

Role of microRNAs in the treatment of type 2 diabetes mellitus with Roux-en-Y gastric bypass
Provedor de dados: 56
Autores: Zhu,Z.; Yin,J.; Li,D.C.; Mao,Z.Q.
The aim of this study was to investigate the effect of Roux-en-Y gastric bypass (RYGB) on the peripheral blood microRNAs (miRNAs) of patients with type 2 diabetes mellitus (T2DM). miRNAs are small 20- to 22-nucleotide (nt) noncoding RNAs. They constitute a novel class of gene regulators that negatively regulate gene expression at the post-transcriptional level. miRNAs play an important role in several biological processes. Twelve patients with T2DM who were scheduled to undergo laparoscopic RYGB surgery were separated into two groups, using a body mass index of 30 kg/m2 as a cut-off point. Venous blood was collected before operation and 12 months after operation. A significant change was observed in the peripheral blood miRNA expression profile of both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Expression profile; Methylation; MicroRNA; Roux-en-Y gastric bypass; Type 2 diabetes mellitus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300705

Diagnostic and prognostic value of procalcitonin for early intracranial infection after craniotomy
Provedor de dados: 56
Autores: Yu,Y.; Li,H.J.
Intracranial infection is a common clinical complication after craniotomy. We aimed to explore the diagnostic and prognostic value of dynamic changing procalcitonin (PCT) in early intracranial infection after craniotomy. A prospective study was performed on 93 patients suspected of intracranial infection after craniotomy. Routine peripheral venous blood was collected on the day of admission, and C reactive protein (CRP) and PCT levels were measured. Cerebrospinal fluid (CSF) was collected for routine biochemical, PCT and culture assessment. Serum and CSF analysis continued on days 1, 2, 3, 5, 7, 9, and 11. The patients were divided into intracranial infection group and non-intracranial infection group; intracranial infection group was further divided into...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Intracranial infection; Procalcitonin; Cerebrospinal fluid procalcitonin; Craniotomy; Diagnosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500608

Serum microRNA-30c levels are correlated with disease progression in Xinjiang Uygur patients with chronic hepatitis B
Provedor de dados: 56
Autores: Zhang,J.; Ma,J.; Wang,H.; Guo,L.; Li,J.
We aimed to investigate the potential role and mechanism of microRNA-30c (miR-30c) in the pathological development of chronic hepatitis B (CHB). The serum levels of miR-30c in hepatitis B virus (HBV) carrier Xinjiang Uygur patients with inactive, low-replicative, high-replicative and HBe antigen-positive CHB were investigated. HepG2 cells were co-transfected with pHBV1.3 and miR-30c mimic or inhibitor or scramble RNA. The effects of miR-30c dysregulation on HBV replication and gene expression, cell proliferation and cell cycle were then investigated. miR-30c was down-regulated in Xinjiang Uygur patients with CHB compared to healthy controls and its expression level discriminated HBV carrier patients with inactive, low-replicative, high-replicative and HBe...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronic hepatitis B; Disease progression; MicroRNA-30c; Hepatitis B virus replication; Cell proliferation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600601

Antiviral activity of shikonin ester derivative PMM-034 against enterovirus 71 in vitro
Provedor de dados: 56
Autores: Zhang,Y.; Han,H.; Sun,L.; Qiu,H.; Lin,H.; Yu,L.; Zhu,W.; Qi,J.; Yang,R.; Pang,Y.; Wang,X.; Lu,G.; Yang,Y.
Human enterovirus 71 (EV71) is the major causative agent of hand, foot, and mouth disease (HFMD), particularly in infants and children below 4 years of age. Shikonin is a bioactive compound with anti-inflammatory, antiviral, and antibacterial activities derived from the roots of the Chinese medicinal herb Lithospermum erythrorhizon. This study aimed to examine the antiviral activity of PMM-034, a shikonin ester derivative, against EV71 in rhabdomyosarcoma (RD) cells. Cytotoxicity of PMM-034 on RD cells was determined using WST-1 assay. Dose- and time-dependent effects of PMM-034 on EV71 replication in RD cells were determined using plaque reduction assay. mRNA expression levels of EV71/VP1 and pro-inflammatory cytokines (IL-1β, IL-6, IL-8, and TNF-α) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EV71; VP1; Shikonin ester derivatives PMM-034; Rhabdomyosarcoma cells; NF-κB.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000602

Propranolol inhibits the proliferation, migration and tube formation of hemangioma cells through HIF-1α dependent mechanisms
Provedor de dados: 56
Autores: Chen,Y.Z.; Bai,N.; Bi,J.H.; Liu,X.W.; Xu,G.Q.; Zhang,L.F.; Li,X.Q.; Huo,R.
The aim of this study was to investigate the mechanism of propranolol on the regression of hemangiomas. Propranolol-treated hemangioma tissues were collected and the expression of hypoxia inducible factor-1α (HIF-1α) was examined. We also established HIF-1α overexpression and knockdown hemangioma cells, and determined the effects of HIF-1α on the hemangioma cells proliferation, apoptosis, migration and tube formation. Significantly increased HIF-1α level was found in the hemangioma tissues compared to that in normal vascular tissues, whereas propranolol treatment decreased the HIF-1α level in hemangioma tissues in a time- and dose-dependent manner. Moreover, propranolol treatment significantly decreased cell proliferation, migration and tube formation as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propranolol; Hemangiomas; Hypoxia inducible factor-1α; Knockdown; Regression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200601

Molecular analysis of CIB4 gene and protein in Kermani sheep
Provedor de dados: 56
Autores: Mohammadabadi,M.R.; Jafari,A.H.D.; Bordbar,F.
The human calcium- and integrin-binding protein (CIB) family is composed of CIB1, CIB2, CIB3, and CIB4 proteins and the CIB4 gene affects fertility. Kermani sheep is one of the most important breeds of Iranian sheep breeds. The aim of this study was to analyze for the first time molecular characteristics of the CIB4 gene and protein in Kermani sheep. Different tissues were collected from the Kermani sheep and real time PCR was performed. The PCR products were sequenced, comparative analyses of the nucleotide sequences were performed, a phylogenetic tree was constructed, and different characteristics of CIB4 proteins were predicted. Real time PCR results showed that the CIB4 gene is expressed only in testis of Kermani sheep. The cDNA nucleotide sequence was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CIB4 gene; Kermani sheep; Molecular characteristics; Testis; Interaction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100602

Absorption mechanism of three curcumin constituents through in situ intestinal perfusion method
Provedor de dados: 56
Autores: Wang,Y.-H.; Ke,X.-M.; Zhang,C.-H.; Yang,R.-P.
This study aimed to investigate the absorption mechanism of three curcumin constituents in rat small intestines. Self-emulsification was used to solubilize the three curcumin constituents, and the rat in situ intestinal perfusion method was used to study factors on drug absorption, including drug mass concentration, absorption site, and the different types and concentrations of absorption inhibitors. Within the scope of experimental concentrations, three curcumin constituents were absorbed in rat small intestines through the active transport mechanism.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Curcumin; Demethoxycurcumin; Bisdethoxycurcumin; In situ intestinal perfusion; Absorption mechanism.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100612

A broad pH range and processive chitinase from a metagenome library
Provedor de dados: 56
Autores: Thimoteo,S.S.; Glogauer,A.; Faoro,H.; de Souza,E.M.; Huergo,L.F.; Moerschbacher,B.M.; Pedrosa,F.O.
Chitinases are hydrolases that degrade chitin, a polymer of N-acetylglucosamine linked β(1-4) present in the exoskeleton of crustaceans, insects, nematodes and fungal cell walls. A metagenome fosmid library from a wastewater-contaminated soil was functionally screened for chitinase activity leading to the isolation and identification of a chitinase gene named metachi18A. The metachi18A gene was subcloned and overexpressed in Escherichia coli BL21 and the MetaChi18A chitinase was purified by affinity chromatography as a 6xHis-tagged fusion protein. The MetaChi18A enzyme is a 92-kDa protein with a conserved active site domain of glycosyl hydrolases family 18. It hydrolyses colloidal chitin with an optimum pH of 5 and temperature of 50°C. Moreover, the enzyme...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chitinase; Metagenomic; Aeromonas; Kinetics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100602

Effects of Lippia sidoides essential oil, thymol, p-cymene, myrcene and caryophyllene on rat sciatic nerve excitability
Provedor de dados: 56
Autores: Barbosa,R.; Cruz-Mendes,Y.; Silva-Alves,K.S.; Ferreira-da-Silva,F.W.; Ribeiro,N.M.; Morais,L.P.; Leal-Cardoso,J.H.
Lippia sidoides Cham is a typical herb species of Northeast Brazil with widespread use in folk medicine. The major constituents of the essential oil of L. sidoides (EOLs) are thymol, p-cymene, myrcene, and caryophyllene. Several studies have shown that the EOLs and its constituents have pharmacological effects, including antibacterial, anti-inflammatory, antioxidant and neuroprotective activity. Therefore, this work aimed to investigate the effects of the EOLs and their main constituents on rat sciatic nerve excitability. The sciatic nerves of adult Wistar rats were dissected and mounted in a moist chamber. Nerves were stimulated by square wave pulses, with an amplitude of 40 V, duration of 100 μs to 0.2 Hz. Both EOLs and thymol inhibited compound action...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compound action potential; Essential oil; Lippia sidoides; Thyme oil; P-cymene; Myrcene.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200611

Relationship between aerobic capacity and pelvic floor muscles function: a cross-sectional study
Provedor de dados: 56
Autores: Jürgensen,S.P.; Borghi-Silva,A.; Bastos,A.M.F.G.; Correia,G.N.; Pereira-Baldon,V.S.; Cabiddu,R.; Catai,A.M.; Driusso,P.
The objective of this study was to evaluate the relationship between aerobic capacity and pelvic floor muscles (PFM) function in adult women. Women aged 18 or over and without urinary dysfunction or other chronic diseases were eligible to participate. They completed the habitual physical activity (HPA) questionnaire, underwent a PFM functional evaluation by palpation and perineometry, and performed a submaximal (between 75 and 85% of maximum heart rate) cardiopulmonary exercise (CPX) test to determine the ventilatory anaerobic threshold (VAT). Forty-one women were included (35±16 years, 75% physically active, 17% very active, and 8% sedentary and 17% presented grade 1 PFM contraction, 31.8% grade 2, 26.8% grade 3, and 24.4% grade 4, according to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Functional capacity; Muscle strength; Women; Physical activity; Oxygen consumption.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100613

Protective effects of deferasirox and N-acetyl-L-cysteine on iron overload-injured bone marrow
Provedor de dados: 56
Autores: Shen,J.C.; Zhang,Y.C.; Zhao,M.F.
Using an iron overload mouse model, we explored the protective effect of deferasirox (DFX) and N-acetyl-L-cysteine (NAC) on injured bone marrow hematopoietic stem/progenitor cells (HSPC) induced by iron overload. Mice were intraperitoneally injected with 25 mg iron dextran every 3 days for 4 weeks to establish an iron overload (Fe) model. DFX or NAC were co-administered with iron dextran in two groups of mice (Fe+DFX and Fe+NAC), and the function of HSPCs was then examined. Iron overload markedly decreased the number of murine HSPCs in bone marrow. Subsequent colony-forming cell assays showed that iron overload also decreased the colony forming capacity of HSPCs, the effect of which could be reversed by DFX and NAC. The bone marrow hematopoiesis damage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Iron overload; Bone marrow; Hematopoietic stem/progenitor cells; Deferasirox; N-acetyl-L-cysteine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200613

Physical exercise-induced fatigue: the role of serotonergic and dopaminergic systems
Provedor de dados: 56
Autores: Cordeiro,L.M.S.; Rabelo,P.C.R.; Moraes,M.M.; Teixeira-Coelho,F.; Coimbra,C.C.; Wanner,S.P.; Soares,D.D.
Brain serotonin and dopamine are neurotransmitters related to fatigue, a feeling that leads to reduced intensity or interruption of physical exercises, thereby regulating performance. The present review aims to present advances on the understanding of fatigue, which has recently been proposed as a defense mechanism instead of a “physiological failure” in the context of prolonged (aerobic) exercises. We also present recent advances on the association between serotonin, dopamine and fatigue. Experiments with rodents, which allow direct manipulation of brain serotonin and dopamine during exercise, clearly indicate that increased serotoninergic activity reduces performance, while increased dopaminergic activity is associated with increased performance....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brain; Lethargy; Monoamines; Performance; Physical activity; Reward.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200301

Tyrosine phosphorylation of Kv1.5 is upregulated in intrauterine growth retardation rats with exaggerated pulmonary hypertension
Provedor de dados: 56
Autores: Fu,L.C.; Lv,Y.; Zhong,Y.; He,Q.; Liu,X.; Du,L.Z.
Intrauterine growth retardation (IUGR) is associated with the development of adult-onset diseases, including pulmonary hypertension. However, the underlying mechanism of the early nutritional insult that results in pulmonary vascular dysfunction later in life is not fully understood. Here, we investigated the role of tyrosine phosphorylation of voltage-gated potassium channel 1.5 (Kv1.5) in this prenatal event that results in exaggerated adult vascular dysfunction. A rat model of chronic hypoxia (2 weeks of hypoxia at 12 weeks old) following IUGR was used to investigate the physiological and structural effect of intrauterine malnutrition on the pulmonary artery by evaluating pulmonary artery systolic pressure and vascular diameter in male rats. Kv1.5...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IUGR; Kv1.5; PASMCs; Pulmonary hypertension; Tyrosine phosphorylation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100604

Soy milk versus simvastatin for preventing atherosclerosis and left ventricle remodeling in LDL receptor knockout mice
Provedor de dados: 56
Autores: Santos,L.; Davel,A.P.; Almeida,T.I.R.; Almeida,M.R.; Soares,E.A.; Fernandes,G.J.M.; Magalhães,S.F.; Barauna,V.G.; Garcia,J.A.D.
Functional food intake has been highlighted as a strategy for the prevention of cardiovascular diseases by reducing risk factors. In this study, we compared the effects of oral treatment with soy milk and simvastatin on dyslipidemia, left ventricle remodeling and atherosclerotic lesion of LDL receptor knockout mice (LDLr-/-) fed a hyperlipidic diet. Forty 3-month old male LDLr-/- mice were distributed into four groups: control group (C), in which animals received standard diet; HL group, in which animals were fed a hyperlipidic diet; HL+SM or HL+S groups, in which animals were submitted to a hyperlipidic diet plus soy milk or simvastatin, respectively. After 60 days, both soy milk and simvastatin treatment prevented dyslipidemia, atherosclerotic lesion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soy milk Dyslipidemia Oxidative stress Inflammation Atherosclerosis; Simvastatin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300701

Patients with Duchenne and Becker muscular dystrophies are not more asymmetrical than healthy controls on timed performance of upper limb tasks
Provedor de dados: 56
Autores: Artilheiro,M.C.; Sá,C.S.C.; Fávero,F.M.; Caromano,F.A.; Voos,M.C.
This study aimed to investigate possible asymmetries and relationships between performance of dominant and non-dominant upper limbs (UL) in patients with Duchenne and Becker muscular dystrophies (DMD/BMD), to compare UL performance of patients and healthy subjects and to investigate the relationship between timed performance of UL and age, motor function and muscle strength in DMD/BMD patients. Sixteen patients with DMD and 3 with BMD were evaluated with Jebsen-Taylor Test (timed performance), Vignos scale and Dimension 3 of Motor Function Measure (motor function), and Medical Research Council scale (muscle strength) on a single session. ANOVA showed no asymmetry between dominant and non-dominant UL, except in the writing subtest, in patients and in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Duchenne muscular dystrophy; Upper extremity; Evaluation; Physical therapy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800604

Investigating ego modules and pathways in osteosarcoma by integrating the EgoNet algorithm and pathway analysis
Provedor de dados: 56
Autores: Chen,X.Y.; Chen,Y.H.; Zhang,L.J.; Wang,Y.; Tong,Z.C.
Osteosarcoma (OS) is the most common primary bone malignancy, but current therapies are far from effective for all patients. A better understanding of the pathological mechanism of OS may help to achieve new treatments for this tumor. Hence, the objective of this study was to investigate ego modules and pathways in OS utilizing EgoNet algorithm and pathway-related analysis, and reveal pathological mechanisms underlying OS. The EgoNet algorithm comprises four steps: constructing background protein-protein interaction (PPI) network (PPIN) based on gene expression data and PPI data; extracting differential expression network (DEN) from the background PPIN; identifying ego genes according to topological features of genes in reweighted DEN; and collecting ego...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteosarcoma; Ego; Genes; Modules; Pathways.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200607

Effect of a rosmarinic acid supplemented hemodialysis fluid on inflammation of human vascular endothelial cells
Provedor de dados: 56
Autores: Wang,W-J.; Cheng,M-H.; Lin,J-H.; Weng,C-S.
Chronic systemic inflammation and repetitive damage of vascular endothelia by incompatible dialysis system are probable causes of cardiovascular disease in patients on dialysis. The present study aimed to assess in vitro biocompatibility and anti-inflammatory effect of hemodialysis fluid supplemented with rosmarinic acid (RA) using human umbilical vein endothelial cells (HUVEC). HUVECs (5×106 cells/mL) were pre-exposed to 1 μg/mL of lipopolysaccharides (LPS) and incubated with RA-supplemented hemodialysis fluid (HDF). Cytotoxicity was assessed qualitatively by morphologic assessment and quantitatively by MTT assay. Expressions of proinflammatory mediators were assessed using quantitative real-time PCR and production of NO was quantified. Phosphorylation of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rosmarinic acid; Hemodialysis fluid; Anti-inflammation; Endothelial cells; LPS.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200606

Antidepressant effects of Kai-Xin-San in fluoxetine-resistant depression rats
Provedor de dados: 56
Autores: Dong,X.Z.; Wang,D.X.; Lu,Y.P.; Yuan,S.; Liu,P.; Hu,Y.
This study aimed to investigate the antidepressant effect and the mechanism of action of Kai-Xin-San (KXS) in fluoxetine-resistant depressive (FRD) rats. Two hundred male Wistar rats weighing 200±10 g were exposed to chronic and unpredictable mild stresses (CUMS) for 4 weeks and given fluoxetine treatment simultaneously. The rats that did not show significant improvement in behavioral indexes were chosen as the FRD model rats. These rats were randomly divided into four groups: FRD model control; oral fluoxetine and aspirin; oral KXS at a dose of 338 mg·kg–1·day–1; and oral KXS at a dose of 676 mg·kg–1·day–1. Rats continued to be exposed to CUMS and underwent treatment once a day for 3 weeks, then cytokine (COX-2, IFN-γ, IL-1β, IL-2, IL-4, IL-6, IL-10,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kai-Xin-San; Fluoxetine-resistant depression; Chronic unpredictable mild stress; Inflammatory factor; Anti-depression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000601

A simple and efficient method for poly-3-hydroxybutyrate quantification in diazotrophic bacteria within 5 minutes using flow cytometry
Provedor de dados: 56
Autores: Alves,L.P.S.; Almeida,A.T.; Cruz,L.M.; Pedrosa,F.O.; de Souza,E.M.; Chubatsu,L.S.; Müller-Santos,M.; Valdameri,G.
The conventional method for quantification of polyhydroxyalkanoates based on whole-cell methanolysis and gas chromatography (GC) is laborious and time-consuming. In this work, a method based on flow cytometry of Nile red stained bacterial cells was established to quantify poly-3-hydroxybutyrate (PHB) production by the diazotrophic and plant-associated bacteria, Herbaspirillum seropedicae and Azospirillum brasilense. The method consists of three steps: i) cell permeabilization, ii) Nile red staining, and iii) analysis by flow cytometry. The method was optimized step-by-step and can be carried out in less than 5 min. The final results indicated a high correlation coefficient (R2=0.99) compared to a standard method based on methanolysis and GC. This method...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flow cytometry; Nile red; Poly-3-hydroxybutyrate; Herbaspirillum seropedicae; Azospirillum brasilense.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100606

Cantharidin suppressed breast cancer MDA-MB-231 cell growth and migration by inhibiting MAPK signaling pathway
Provedor de dados: 56
Autores: Gu,X.-D.; Xu,L.-L; Zhao,H.; Gu,J.-Z; Xie,X.-H.
As an active constituent of the beetle Mylabris used in traditional Chinese medicine, cantharidin is a potent and selective inhibitor of protein phosphatase 2A (PP2A) that plays a crucial role in cell cycle progression, apoptosis, and cell fate. The role and possible mechanisms exerted by cantharidin in cell growth and metastasis of breast cancer were investigated in this study. Cantharidin was found to inhibit cell viability and clonogenic potential in a time- and dose-dependent manner. Cell cycle analysis revealed that cell percentage in G2/M phase decreased, whereas cells in S and G1 phases progressively accumulated with the increasing doses of cantharidin treatment. In a xenograft model of breast cancer, cantharidin inhibited tumor growth in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cantharidin; Breast cancer; ERK/MAPK pathway; Growth; Migration; Invasion.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700608

Angiotensin-(1-7) relieved renal injury induced by chronic intermittent hypoxia in rats by reducing inflammation, oxidative stress and fibrosis
Provedor de dados: 56
Autores: Lu,W.; Kang,J.; Hu,K.; Tang,S.; Zhou,X.; Yu,S.; Xu,L.
We aimed to study the renal injury and hypertension induced by chronic intermittent hypoxia (CIH) and the protective effects mediated by angiotensin 1-7 [Ang(1-7)]. We randomly assigned 32 male Sprague-Dawley rats (body weight 180-200 g) to normoxia control, CIH, Ang(1-7)-treated normoxia, and Ang(1-7)-treated CIH groups. Systolic blood pressure (SBP) was monitored at the start and end of each week. Renal sympathetic nerve activity (RSNA) was recorded. CTGF and TGF-β were detected by immunohistochemistry and western blotting. Tissue parameters of oxidative stress were also determined. In addition, renal levels of interleukin-6, tumor necrosis factor-α, nitrotyrosine, and hypoxia-inducible factor-1α were determined by immunohistochemistry, immunoblotting,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ang(1-7); Renal injury; Obstructive sleep apnea; Inflammation; Oxidative stress; Fibrosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100604

Chronic intermittent exposure to ayahuasca during aging does not affect memory in mice
Provedor de dados: 56
Autores: Correa-Netto,N.F.; Coelho,L.S.; Galfano,G.S.; Nishide,F.; Tamura,F.; Shimizu,M.K.; Santos Junior,J.G.; Linardi,A.
The Quechua term ayahuasca refers to a beverage obtained from decoctions of the liana Banisteriopsis caapi with leaves of Psychotria viridis. The ritualistic use of ayahuasca is becoming a global phenomenon, with some individuals using this beverage throughout life, including in old age. Cognitive impairment is a common manifestation during aging. There are conflicting reports on the ability of some ayahuasca compounds to exert neuroprotective or neurotoxic effects that could improve or impair learning and memory. Animal models provide a relevant and accessible means of investigating the behavioral effects of ayahuasca without the environmental conditions associated with the ritualistic use of the beverage. In this study, we investigated the influence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anxiety Banisteriopsis Carbolines N; N-dimethyltryptamine Learning.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700604

Inflammation and oxidative stress in heart failure: effects of exercise intensity and duration
Provedor de dados: 56
Autores: Ribeiro-Samora,G.A.; Rabelo,L.A.; Ferreira,A.C.C.; Favero,M.; Guedes,G.S.; Pereira,L.S.M.; Parreira,V.F.; Britto,R.R.
Although acute exercise is apparently pro-inflammatory and increases oxidative stress, it can promote the necessary stress stimulus to train chronic adaptations in patients with chronic heart failure (CHF). This study aimed to compare the effects of exercise intensity and duration on the inflammatory markers soluble tumor necrosis factor receptor (sTNFR1) and interleukin-6 (IL-6), and on oxidative stress [malondialdehyde (MDA) and antioxidant enzymes: catalase (CAT) and superoxide dismutase (SOD)] in individuals with CHF. Eighteen patients performed three exercise sessions: 30 min of moderate-intensity (M30) exercise, 30 min of low-intensity (L30) exercise, and 45 min of low-intensity (L45) exercise. Blood analysis was performed before exercise (baseline),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heart failure; Inflammation; Oxidative stress; Exercise intensity; Exercise duration.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900608

The regulatory role of IL-6R in hepatitis B-associated fibrosis and cirrhosis
Provedor de dados: 56
Autores: Chen,Y.; Yang,S.; Peng,Y.; Yang,Z.
This study investigated the expression and regulation of IL-6R in hepatitis B-associated moderate hepatic fibrosis and cirrhosis. Liver tissues, peripheral blood monocytes (PBMs) and serum were collected from 26 hepatitis B patients with liver fibrosis and 35 hepatitis B patients with liver cirrhosis. The levels of Il-6r mRNA expression in these samples were examined by quantitative real-time PCR and IL-6R protein levels were analyzed by western blot and ELISA. MiRNAs that regulate IL-6R expression were predicted by bioinformatics analysis, and validated by dual luciferase reporter assay. Compared with the hepatic fibrosis group, IL-6R was significantly upregulated at both mRNA and protein levels in liver tissues, PBMs and serum samples from the hepatic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MiRNA-30b; IL-6 receptor; Chronic hepatitis B; Fibrosis; Cirrhosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100610

Obesity and kidney disease: hidden consequences of the epidemic
Provedor de dados: 56
Autores: Kovesdy,C.P.; Furth,S.L.; Zoccali,C.
Obesity has become a worldwide epidemic and its prevalence has been projected to grow by 40% in the next decade. This increasing prevalence has implications for the risk of diabetes, cardiovascular disease and also for chronic kidney disease (CKD). A high body mass index is one of the strongest risk factors for new-onset CKD. In individuals affected by obesity, a compensatory hyperfiltration occurs to meet the heightened metabolic demands of the increased body weight. The increase in intraglomerular pressure can damage the kidneys and raise the risk of developing CKD in the long-term. The incidence of obesity-related glomerulopathy has increased ten-fold in recent years. Obesity has also been shown to be a risk factor for nephrolithiasis, and for a number...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Obesity; Chronic kidney disease; Nephrolithiasis; Kidney cancer; Prevention.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500101

Swimming training prevents coronary endothelial dysfunction in ovariectomized spontaneously hypertensive rats
Provedor de dados: 56
Autores: Claudio,E.R.G.; Almeida,S.A.; Mengal,V.; Brasil,G.A.; Santuzzi,C.H.; Tiradentes,R.V.; Gouvea,S.A.; Bissoli,N.S.; Santos,R.L.; Abreu,G.R.
Estrogen deficiency and hypertension are considered major risk factors for the development of coronary heart disease. On the other hand, exercise training is considered an effective form to prevent and treat cardiovascular diseases. However, the effects of swimming training (SW) on coronary vascular reactivity in female ovariectomized hypertensive rats are not known. We aimed to evaluate the effects of SW on endothelium-dependent coronary vasodilation in ovariectomized hypertensive rats. Three-month old spontaneously hypertensive rats (SHR, n=50) were divided into four groups: sham (SH), sham plus swimming training (SSW), ovariectomized (OVX), and ovariectomized plus swimming training (OSW). The SW protocol (5 times/week, 60 min/day) was conducted for 8...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Swimming training; Ovariectomy; Coronary reactivity; Oxidative stress; Antioxidant enzymes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100607

Cerebrospinal fluid-contacting nucleus mediates nociception via release of fractalkine
Provedor de dados: 56
Autores: Zhou,Q.Q.; Chen,S.S.; Zhang,Q.Q.; Liu,P.F.; Fang,H.Z.; Yang,Y.; Zhang,L.C.
Increasing evidence suggests that the cerebrospinal ﬂuid-contacting nucleus (CSF-contacting nucleus) mediates the transduction and regulation of pain signals. However, the precise molecular mechanisms remain unclear. Studies show that release of fractalkine (FKN) from neurons plays a critical role in nerve injury-related pain. We tested the hypothesis that release of FKN from the CSF-contacting nucleus regulates neuropathic pain, in a chronic constriction injury rat model. The results show that FKN is expressed by neurons, via expression of its only receptor CX3CR1 in the microglia. The levels of soluble FKN (sFKN) were markedly upregulated along with the increase in FKN mRNA level in rats subjected to chronic constriction injury. In addition, injection of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerebrospinal fluid-contacting nucleus; FKN; Microglia; Neuropathic pain; Chronic constriction injury.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900610

The anesthetic agent sevoflurane attenuates pulmonary acute lung injury by modulating apoptotic pathways
Provedor de dados: 56
Autores: Wang,L.; Ye,Y.; Su,H.B.; Yang,J.P.
The objective of this study was to evaluate lung protection by the volatile anesthetic sevoflurane (SEVO), which inhibits apoptosis. Male Sprague-Dawley rats (250–280 g; n=18) were randomly divided into three groups. The LPS group received 5 mg/kg endotoxin (lipopolysaccharide), which induced acute lung injury (ALI). The control (CTRL) group received normal saline and the SEVO group received sevoflurane (2.5%) for 30 min after ALI was induced by 5 mg/kg LPS. Samples were collected for analysis 12 h after LPS. Lung injury was assessed by pathological observations and tissue wet to dry weight (W/D) ratios. Apoptotic index (AI) was determined by terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay and electron microscopy. Caspase-3 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sevofluran; Apoptosis; Pulmonary acute lung injury; Caspase-3; Bcl-2.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300702

MicroRNA-340-5p modulates cisplatin resistance by targeting LPAATβ in osteosarcoma
Provedor de dados: 56
Autores: Song,L.; Duan,P.; Gan,Y.; Li,P.; Zhao,C.; Xu,J.; Zhang,Z.; Zhou,Q.
MicroRNAs (miRNAs) play an important role in drug resistance and modulate the efficiency of chemotherapy. A recent study indicated that miR-340 functions as a tumor suppressor in various types of cancer. However, the role of miR-340 in chemotherapy has not been reported yet. In this study, we found that miR-340 enhanced cisplatin (CDDP)-induced cell death. Induction of miR-340-5p expression decreased the IC50 of CDDP and increased the apoptosis of CDDP-resistant MG-63 and Saos-2 cells. Moreover, miR-340-5p decreased the accumulation of MRP1 and MDR1. We further explored the mechanism underlying the promoting effects of miR-340-5p on CDDP-induced cell death. We identified a potential target of miR-340 in the 3′ untranslated region of lysophosphatidic acid...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Sensitivity to cisplatin; LPAATβ; MiR-340-5p; Osteosarcoma.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500606

Neoadjuvant chemotherapy with trastuzumab in HER2-positive breast cancer: pathologic complete response rate, predictive and prognostic factors
Provedor de dados: 56
Autores: Buzatto,I.P.C.; Ribeiro-Silva,A.; Andrade,J.M.; Carrara,H.H.A.; Silveira,W.A.; Tiezzi,D.G.
The purpose of this study was to retrospectively review the pathologic complete response (pCR) rate from patients (n=86) with stage II and III HER2-positive breast cancer treated with neoadjuvant chemotherapy at our institution from 2008 to 2013 and to determine possible predictive and prognostic factors. Immunohistochemistry for hormone receptors and Ki-67 was carried out. Clinical and pathological features were analyzed as predictive factors of response to therapy. For survival analysis, we used Kaplan-Meier curves to estimate 5-year survival rates and the log-rank test to compare the curves. The addition of trastuzumab to neoadjuvant chemotherapy significantly improved pCR rate from 4.8 to 46.8%, regardless of the number of preoperative trastuzumab...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neoadjuvant chemotherapy; Trastuzumab; Pathologic complete response; Predictive factors of response; Prognosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200702

Salivary cortisol and α-amylase: subclinical indicators of stress as cardiometabolic risk
Provedor de dados: 56
Autores: Cozma,S.; Dima-Cozma,L.C.; Ghiciuc,C.M.; Pasquali,V.; Saponaro,A.; Patacchioli,F.R.
Currently, the potential for cardiovascular (CV) stress-induced risk is primarily based on the theoretical (obvious) side effects of stress on the CV system. Salivary cortisol and α-amylase, produced respectively by the hypothalamus-pituitary-adrenal (HPA) axis and the sympathetic-adrenomedullary (SAM) system during stress response, are still not included in the routine evaluation of CV risk and require additional and definitive validation. Therefore, this article overviews studies published between 2010 and 2015, in which salivary cortisol and α-amylase were measured as stress biomarkers to examine their associations with CV/CMR (cardiometabolic risk) clinical and subclinical indicators. A comprehensive search of PubMed, Web of Science and Scopus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salivary stress biomarkers; Cardiometabolic risk (factors); Stress; Hypothalamic-pituitary-adrenal axis; Sympathetic adrenomedullary system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200201

A practical approach to assess leg muscle oxygenation during ramp-incremental cycle ergometry in heart failure
Provedor de dados: 56
Autores: Barroco,A.C.; Sperandio,P.A.; Reis,M.; Almeida,D.R.; Neder,J.A.
Heart failure is characterized by the inability of the cardiovascular system to maintain oxygen (O2) delivery (i.e., muscle blood flow in non-hypoxemic patients) to meet O2 demands. The resulting increase in fractional O2 extraction can be non-invasively tracked by deoxygenated hemoglobin concentration (deoxi-Hb) as measured by near-infrared spectroscopy (NIRS). We aimed to establish a simplified approach to extract deoxi-Hb-based indices of impaired muscle O2 delivery during rapidly-incrementing exercise in heart failure. We continuously probed the right vastus lateralis muscle with continuous-wave NIRS during a ramp-incremental cardiopulmonary exercise test in 10 patients (left ventricular ejection fraction &lt;35%) and 10 age-matched healthy males....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heart failure; Exercise; Oxygen; Muscle; Near-infrared spectroscopy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200603

Increased expression of ID2, PRELP and SMOC2 genes in patients with endometriosis
Provedor de dados: 56
Autores: Araujo,F.M.; Meola,J.; Rosa-e-Silva,J.C.; Paz,C.C.P.; Ferriani,R.A.; Nogueira,A.A.
Endometriosis is a benign, estrogen-dependent disease with symptoms such as pelvic pain and infertility, and it is characterized by the ectopic distribution of endometrial tissue. The expression of the ID2, PRELP and SMOC2 genes was compared between the endometrium of women without endometriosis in the proliferative phase of their menstrual cycle and the eutopic and ectopic endometrium of women with endometriosis in the proliferative phase. Paired tissue samples from 20 women were analyzed: 10 from endometrial and peritoneal endometriotic lesions and 10 from endometrial and ovarian endometriotic lesions. As controls, 16 endometrium samples were collected from women without endometriosis in the proliferative phase of menstrual cycle. Analysis was performed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gene expression; Endometriosis; PRELP; SMOC2; ID2; Real-time PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700605

Effects of vacuum sealing drainage on the treatment of cranial bone-exposed wounds in rabbits
Provedor de dados: 56
Autores: Chen,X.J.; Liu,S.; Gao,G.Z.; Yan,D.X.; Jiang,W.S.
This study was designed to assess the efficacy of vacuum sealing drainage (VSD) on skull exposure wounds in rabbits and to investigate the underlying mechanism of the process. Full-thickness excisional circular wounds 2×2 cm with or without periosteum involvement were created in 88 New Zealand white rabbits (mean body weight: 3.0±0.65 kg). Animals were randomly divided into 4 groups: periosteum-intact wounds treated with traditional dressing (p+control), periosteum-intact wounds treated with VSD (p+VSD), periosteum-lacking wounds treated with traditional dressing (p–control) and periosteum-lacking wounds treated with VSD (p–VSD). The wounds treated with traditional dressing were covered with Vaseline gauze, while VSD treatment was accompanied with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cranial bone-exposed wound; Vacuum sealing drainage; Periosteum; Wound healing; Efficacy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200602

Establishment of patient-derived tumor xenograft (PDTX) models using samples from CT-guided percutaneous biopsy
Provedor de dados: 56
Autores: Zhuang,Y.-P.; Zhu,Y.-P.; Wang,H.-Y.; Sun,L.; Zhang,J.; Hao,Y.-P.; Wang,L.
This study aimed to investigate the feasibility of the establishment of a human cancer xenograft model using samples from computed tomography (CT)-guided percutaneous biopsy. Fresh tumor tissues obtained from 10 cancer patients by CT-guided percutaneous biopsy were subcutaneously inoculated into NOD-Prkdcem26Il2rgem26Nju (NCG) mice to establish human patient-derived tumor xenograft (PDTX) models. The formation of first and second generation xenografts was observed, and tumor volume was recorded over time. Tumor tissue consistency between the PDTX model and primary tumors in patients was compared using H&amp;E staining and immunohistochemistry. Pharmacodynamic tests of clinically used chemotherapeutic drugs were conducted on second generation xenografts,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cancer; Patient-derived tumor xenografts (PDTX); Computed tomography; X-ray; Percutaneous biopsy; Mouse models.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600705

Relationship between matrix metalloproteinases and the occurrence and development of ovarian cancer
Provedor de dados: 56
Autores: Zhang,Y.; Chen,Q.
Ovarian cancer is one of the most malignant genital cancers, with a high mortality rate. Many researchers have suggested that matrix metalloproteinases (MMPs) have remarkably high expression in ovarian cancer tissues. MMPs are considered to be related to the occurrence, development, invasion and metastasis of ovarian cancer. Moreover, some studies have discovered that the unbalance between MMPs and tissue inhibitor of metalloproteinases (TIMPs) are associated with the malignant phenotype of tumors. This review summarizes the latest research progress of MMPs in ovarian cancer. The investigation of MMP mechanism in ovarian cancer will facilitate the development of effective anti-tumor drugs, and thereby improve the survival rate of patients with ovarian...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovarian cancer; Matrix metalloproteinases (MMPs); Tissue inhibitor of metalloproteinases (TIMPs); Invasion; Metastasis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600301

Proliferation and osteogenic activity of fibroblasts induced with fibronectin
Provedor de dados: 56
Autores: Zhang,W.-H.; Li,X.-L.; Guo,Y.; Zhang,Y.
The aim of this study was to determine the proliferation and osteogenic activity of fibroblasts induced with fibronectin and their possible dose-dependent relationship. The fibroblasts obtained by tissue explants adherent method were induced with fibronectin at different concentrations of 0, 10, 20, 40, 60, and 80 μg/mL for 14 days. The 3H-thymidine and 3H-proline incorporation test was used to evaluate the synthesis of DNA and collagen by fibroblasts, respectively. The mineralized nodules and osteocalcin secretion, as vital osteogenic indicators, were detected with tetracycline labeling and 125I-labeled competitive immunoassay, respectively. Fibronectin significantly increased the synthesis of DNA and collagen by fibroblasts, especially at the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fibroblast; Fibronectin; Proliferation; Osteogenesis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000604

Astragalus polysaccharides improve cardiomyopathy in STZ-induced diabetic mice and heterozygous (SOD2+/-) knockout mice
Provedor de dados: 56
Autores: Ju,J.; Chen,W.; Lai,Y.; Wang,L.; Wang,H.; Chen,W.J.; Zhao,X.; Ye,H.; LI,Y.; Zhang,Y.
Oxidative stress plays an important role in the development of diabetic cardiomyopathy. In the present study, we determined whether the effect of astragalus polysaccharides (APS) on diabetic cardiomyopathy was associated with its impact on oxidative stress. Streptozotocin (STZ)-induced diabetic mice and heterozygous superoxide dismutase (SOD2+/-) knockout mice were administered APS. The hemodynamics, cardiac ultrastructure, and the apoptosis, necrosis and proliferation of cardiomyocytes were assessed to evaluate the effect of APS on diabetic and oxidative cardiomyopathy. Furthermore, H2O2 formation, oxidative stress/damage, and SOD activity in cardiomyocytes were evaluated to determine the effects of APS on cardiac oxidative stress. APS therapy improved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetes; Cardiomyopathy; Oxidative stress; Superoxide dismutase.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800601

Hippocampal overexpression of Down syndrome cell adhesion molecule in amyloid precursor protein transgenic mice
Provedor de dados: 56
Autores: Jia,Y.L.; Fu,Z.X.; Zhang,B.H.; Jia,Y.J.
Down syndrome cell adhesion molecule (DSCAM) is located within the Down syndrome critical region of chromosome 21. DSCAM is a broadly expressed neurodevelopmental protein involved in synaptogenesis, neurite outgrowth, and axon guidance. We previously demonstrated DSCAM overexpression in the cortex of amyloid precursor protein (APP) transgenic mice, suggesting possible regulatory interactions between APP and DSCAM. APP mice exhibit deficits in hippocampus-dependent learning and memory. In this preliminary study, we examined age-related changes in DSCAM expression within the hippocampus in 16 APP transgenic mice (1, 3, 6 and 12 months old). Hippocampus-dependent spatial memory was assessed in APP mice and age-matched wild type littermates (WTs) using the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Down syndrome cell adhesion molecule; Amyloid precursor protein; Transgenic mouse; Hippocampus; Dementia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600603

Ferulic acid lowers body weight and visceral fat accumulation via modulation of enzymatic, hormonal and inflammatory changes in a mouse model of high-fat diet-induced obesity
Provedor de dados: 56
Autores: de Melo,T.S.; Lima,P.R.; Carvalho,K.M.M.B.; Fontenele,T.M.; Solon,F.R.N.; Tomé,A.R.; de Lemos,T.L.G.; da Cruz Fonseca,S.G.; Santos,F.A.; Rao,V.S.; de Queiroz,M.G.R.
Previous studies have reported on the glucose and lipid-lowering effects of ferulic acid (FA) but its anti-obesity potential has not yet been firmly established. This study investigated the possible anti-obesitogenic effects of FA in mice fed a high-fat diet (HFD) for 15 weeks. To assess the antiobesity potential of FA, 32 male Swiss mice, weighing 20–25 g (n=6–8 per group) were fed a normal diet (ND) or HFD, treated orally or not with either FA (10 mg/kg) or sibutramine (10 mg/kg) for 15 weeks and at the end of this period, the body weights of animals, visceral fat accumulation, plasma levels of glucose and insulin hormone, amylase and lipase activities, the satiety hormones ghrelin and leptin, and tumor necrosis factor-α (TNF-α) and monocyte...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ferulic acid; Anti-obesity; High-fat diet; Leptin; Lipase; Tumor necrosis factor-α.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100603

microRNA-142-3p inhibits apoptosis and inflammation induced by bleomycin through down-regulation of Cox-2 in MLE-12 cells
Provedor de dados: 56
Autores: Guo,F.; Lin,S.C.; Zhao,M.S.; Yu,B.; Li,X.Y.; Gao,Q.; Lin,D.J.
microRNA (miR)-142-3p is implicated in malignancy and has been identified as a biomarker for aggressive and recurrent lung adenocarcinomas. This study aimed to evaluate the inhibitory effect of miR-142-3p on apoptosis and inflammation induced by bleomycin in MLE-12 cells. MLE-12 cells were first transfected either with miR-142-3p mimic or miR-142-3p inhibitor and then the cells were exposed to 50 μg/mL of bleomycin. Thereafter, cell viability, apoptosis and the expression of pro-inflammatory cytokines were assessed using CCK-8, flow cytometry, RT-PCR and western blot analyses. Cox-2, PI3K, AKT and mTOR expressions were detected by western blotting after bleomycin was administered together with NS-398 (an inhibitor of Cox-2). As a result, cell viability was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MiR-142-3p; MLE-12 cells; Bleomycin; Apoptosis; Pro-inflammatory cytokines; Idiopathic pulmonary fibrosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700606

Development of VEGF-loaded PLGA matrices in association with mesenchymal stem cells for tissue engineering
Provedor de dados: 56
Autores: Rosa,A.R.; Steffens,D.; Santi,B.; Quintiliano,K.; Steffen,N.; Pilger,D.A.; Pranke,P.
The association of bioactive molecules, such as vascular endothelial growth factor (VEGF), with nanofibers facilitates their controlled release, which could contribute to cellular migration and differentiation in tissue regeneration. In this research, the influence of their incorporation on a polylactic-co-glycolic acid (PLGA) scaffold produced by electrospinning on cell adhesion and viability and cytotoxicity was carried out in three groups: 1) PLGA/BSA/VEGF; 2) PLGA/BSA, and 3) PLGA. Morphology, fiber diameter, contact angle, loading efficiency and controlled release of VEGF of the biomaterials, among others, were measured. The nanofibers showed smooth surfaces without beads and with interconnected pores. PLGA/BSA/VEGF showed the smallest water contact...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emulsion electrospinning; VEGF; Stem cells; PLGA; Biomaterials.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900601

Detection and differentiation of Entamoeba histolytica and Entamoeba dispar in clinical samples through PCR-denaturing gradient gel electrophoresis
Provedor de dados: 56
Autores: López-López,P.; Martínez-López,M.C.; Boldo-León,X.M.; Hernández-Díaz,Y.; González-Castro,T.B.; Tovilla-Zárate,C.A.; Luna-Arias,J.P.
Amebiasis is one of the twenty major causes of disease in Mexico; however, the diagnosis is difficult due to limitations of conventional microscopy-based techniques. In this study, we analyzed stool samples using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) to differentiate between Entamoeba histolytica (pathogenic) and E. dispar (non-pathogenic). The target for the PCR amplification was a small region (228 bp) of the adh112 gene selected to increase the sensitivity of the test. The study involved 62 stool samples that were collected from individuals with complaints of gastrointestinal discomfort. Of the 62 samples, 10 (16.1%) were positive for E. histolytica while 52 (83.9%) were negative. No sample was positive for E....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amebiasis; Neglected diseases; Diagnostic; PCR; DGGE; Adh112 gene.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400607

Application of endoscopy to treat mandibular keratocystic odontogenic tumors
Provedor de dados: 56
Autores: Gao,Z.; Ni,Q.W.; Gao,W.; Liu,Y.P.; Zhang,Q.
The aim of this study was to evaluate the feasibility of endoscopy to remove keratocystic odontogenic tumors (KCOTs) with virtual 3D mandibular images. Fifteen patients (mean age, 40.27±14.58 years) who underwent endoscopic mandibular KCOT enucleation between May 2009 and October 2009 were included. Virtual 3D mandibular reconstructions derived from computed tomography (CT) imaging were generated for all patients. Recurrence and pathological fracture were evaluated as the primary outcome variables at 1 and 12 months after operation. Secondary infection and inferior alveolar nerve injury were evaluated as the secondary outcome variables at 1 and 6 months after operation. None of the 15 patients exhibited signs of recurrence or pathological fracture after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mandibular KCOT; Endoscopic assisted surgery; 3D reconstruction; Minimally invasive surgical procedures; Treatment feasibility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800605

Down-regulation of single-stranded DNA-binding protein 1 expression induced by HCMV infection promotes lipid accumulation in cells
Provedor de dados: 56
Autores: Guo,N.; Zhang,N.; Yan,L.; Cao,X.; Lv,F.; Wang,J.; Wang,Y.; Cong,H.
The objective of this study was to observe the infection of human cytomegalovirus (HCMV) to human umbilical vein endothelial cells, and its effect on the expression of single-stranded DNA-binding protein (SSBP1) and on lipid metabolism in endothelial cells. We screened the differential expression of mRNAs after HCMV infection by suppression subtractive hybridization and the expression levels of SSBP1 mRNA and protein after HCMV infection by real-time PCR and western blot. After verification of successful infection by indirect immunofluorescent staining and RT-PCR, we found a differential expression of lipid metabolism-related genes including LDLR, SCARB, CETP, HMGCR, ApoB and LPL induced by HCMV infection. The expression levels of SSBP1 mRNA and protein...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HCMV; SSBP1; HUVEC; Lipid accumulation; LDLR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100605

Naringenin regulates production of matrix metalloproteinases in the knee-joint and primary cultured articular chondrocytes and alleviates pain in rat osteoarthritis model
Provedor de dados: 56
Autores: Wang,C.C.; Guo,L.; Tian,F.D.; An,N.; Luo,L.; Hao,R.H.; Wang,B.; Zhou,Z.H.
Inflammation of cartilage is a primary symptom for knee-joint osteoarthritis. Matrix metalloproteinases (MMPs) are known to play an important role in the articular cartilage destruction related to osteoarthritis. Naringenin is a plant-derived flavonoid known for its anti-inflammatory properties. We studied the effect of naringenin on the transcriptional expression, secretion and enzymatic activity of MMP-3 in vivo in the murine monosodium iodoacetate (MIA) osteoarthritis model. The assessment of pain behavior was also performed in the MIA rats. The destruction of knee-joint tissues was analyzed microscopically. Moreover, the effect of naringenin was also studied in vitro in IL-1β activated articular chondrocytes. The transcriptional expression of MMP-3,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metalloproteinase; Osteoarthritis; Naringenin; Chondrocyte; Knee-joint; Rat MIA model.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400603

Metabolomics as a promising tool for early osteoarthritis diagnosis
Provedor de dados: 56
Autores: de Sousa,E.B.; dos Santos Junior,G.C.; Duarte,M.E.L.; Moura Neto,V.; Aguiar,D.P.
Osteoarthritis (OA) is the main cause of disability worldwide, due to progressive articular cartilage loss and degeneration. According to recent research, OA is more than just a degenerative disease due to some metabolic components associated to its pathogenesis. However, no biomarker has been identified to detect this disease at early stages or to track its development. Metabolomics is an emerging field and has the potential to detect many metabolites in a single spectrum using high resolution nuclear magnetic resonance (NMR) techniques or mass spectrometry (MS). NMR is a reproducible and reliable non-destructive analytical method. On the other hand, MS has a lower detection limit and is more destructive, but it is more sensitive. NMR and MS are useful...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: NMR; Metabolomics; Osteoarthritis; Synovial Fluid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100301

Ghrelin plasma levels, gastric ghrelin cell density and bone mineral density in women with rheumatoid arthritis
Provedor de dados: 56
Autores: Maksud,F.A.N.; Kakehasi,A.M.; Guimarães,M.F.B.R.; Machado,C.J.; Barbosa,A.J.A.
Generalized bone loss can be considered an extra-articular manifestation of rheumatoid arthritis (RA) that may lead to the occurrence of fractures, resulting in decreased quality of life and increased healthcare costs. The peptide ghrelin has demonstrated to positively affect osteoblasts in vitro and has anti-inflammatory actions, but the studies that correlate ghrelin plasma levels and RA have contradictory results. We aimed to evaluate the correlation between total ghrelin plasma levels, density of ghrelin-immunoreactive cells in the gastric mucosa, and bone mineral density (BMD) in twenty adult women with established RA with 6 months or more of symptoms (mean age of 52.70±11.40 years). Patients with RA presented higher ghrelin-immunoreactive cells...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ghrelin; Gastric mucosa; Bone metabolism; Osteoporosis; Rheumatoid arthritis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600704

Effects of heme oxygenase-1 recombinant Lactococcus lactis on the intestinal barrier of hemorrhagic shock rats
Provedor de dados: 56
Autores: Gao,X.Y.; Zhou,X.F.; Wang,H.; Lv,N.; Liu,Y.; Guo,J.R.
This study aimed to investigate the effects of heme oxygenase-1 recombinant Lactococcus lactis (LL-HO-1) on the intestinal barrier of rats with hemorrhagic shock. One hundred Sprague-Dawley male rats (280–320 g) were randomly divided into healthy control group (N group) and hemorrhagic shock group (H group). Each group was subdivided into HO1t, HO2t, HO3t, PBS and LL groups in which rats were intragastrically injected with LL-HO-1 once, twice and three times, PBS and L. lactis (LL), respectively. The mortality, intestinal myeloperoxidase (MPO) activity, intestinal contents of TNF-α, IL-10 and HO-1, and intestinal Chiu's score were determined. Results showed that in N group, the HO-1 content increased after LL-HO-1 treatment, and significant difference was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heme oxygenase-1; Hemorrhagic shock; Lactococcus lactis; Intestinal barrier; Intestinal inflammation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700601

Seroprevalence of bactericidal antibodies against serogroup B and C Meningococci in a University Hospital
Provedor de dados: 56
Autores: Gioia,C.A.C.; Lemos,A.P.S.; Gorla,M.C.O.; Mendoza-Sassi,R.; Figueredo,B.S.; Ballester,T.; Von Groll,A.; Wedig,B.; Ethur,N.V.; Bragança,L.; Silva,P.E.A.; Milagres,L.G.
Meningococcus serogroup B (MenB), clonal complex 32 (cc 32), was the Brazilian epidemic strain of meningococcal disease (MD) in the 1990’s. Currently, meningococcus serogroup C (MenC), cc 103, is responsible for most of the cases of the disease in Brazil. The aim of this study was to investigate the seroprevalence of bactericidal antibody (SBA) against representative epidemic strains of MenC, (N753/00 strain, C:23:P1.22,14-6, cc103) and MenB, (Cu385/83 strain, B:4,7:P1.15,19, cc32) in students and employees of a university hospital in the State of Rio Grande do Sul (RS, Brazil). A second MenC strain (N79/96, C:2b:P1.5-2,10, cc 8) was used as a prototype strain of Rio de Janeiro’s outbreak that occurred in the 1990’s. Our previous study showed a 9% rate of...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Neisseria meningitidis; Bactericidal antibodies; Meningococcal carrier.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500607

Association between polymorphisms in the APOB gene and hyperlipidemia in the Chinese Yugur population
Provedor de dados: 56
Autores: Gu,Q-L.; Han,Y.; Lan,Y-M.; Li,Y.; Kou,W.; Zhou,Y-S.; Hai,X-J.; Yan,B.; Ci,C-H.
We investigated the influence of apolipoprotein B gene (APOB) variants on the risk of hyperlipidemia (HL) in 631 middle-aged and elderly members of the Chinese Yugur population (HL, n=336; normolipidemia, n=295). APOB polymorphisms were identified using mass spectrometry, and five single nucleotide polymorphisms (rs1042034, rs2163204, rs512535, rs676210, and rs679899) and serum lipids were further analyzed. rs1042034 and rs676210 were significantly associated with HL (P&lt;0.05). Compared with the GG or AA genotype, individuals with AG and AG+AA in rs1042034 and with AG and AG+GG in rs676210 had a 1.67-fold (95%CI=1.20–2.33),1.63-fold (95%CI=1.19–2.24), 1.72-fold (95%CI=1.24–2.40), and 1.67-fold (95%CI=1.21–2.291) increased risk of high HL, respectively....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yugur minority; Apolipoprotein B gene; Single nucleotide polymorphism; Hyperlipidemia; Serum lipids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100601

MicroRNA-122 regulates caspase-8 and promotes the apoptosis of mouse cardiomyocytes
Provedor de dados: 56
Autores: Zhang,Z.W.; Li,H.; Chen,S.S.; Li,Y.; Cui,Z.Y.; Ma,J.
Cardiomyocyte apoptosis plays key roles in the pathogenesis of heart diseases such as myocardial infarction. MicroRNAs are important regulators of gene expression, which are also involved in the regulation of cardiomyocyte apoptosis. However, cardiomyocyte apoptosis regulated by microRNA (miR)-122 is largely unexplored. The aim of this study focused on the role of miR-122 in cardiomyocyte apoptosis. Cardiomyocytes were isolated from neonatal mice and primarily cultured. MiR-122 mimic and inhibitor were transfected to cardiomyocytes and verified by qRT-PCR. Cell viability and apoptosis post-transfection were assessed by MTT assay and flow cytometry, respectively. Changes in expression of caspase-8 were quantified by qRT-PCR and western blot. Results showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cardiomyocyte; Apoptosis; MiR-122; Caspase-8; Myocardial infarction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200601

Interleukin-27 augments the inhibitory effects of sorafenib on bladder cancer cells
Provedor de dados: 56
Autores: Cao,J.Y.; Yin,H.S.; Li,H.S.; Yu,X.Q.; Han,X.
Both sorafenib and interleukin-27 (IL-27) are antineoplastic drugs. This study aimed to investigate the synergistic effect of these two drugs on bladder cancer cells. HTB-9 and T24 cells were stimulated with IL-27 (50 ng/mL), sorafenib (2 μM) or the synergistic action of these two drugs. The cells without treatment acted as control. Cell proliferation, apoptosis and invasion were measured by bromodeoxyuridine assay, flow cytometry and modified Boyden chamber, respectively. Simultaneously, both modified Boyden chamber and scratch assay were used to assess cell migration. Finally, the phosphorylation levels of key kinases in the Akt/mechanistic target of rapamycin (mTOR)/mitogen-activated protein kinase (MAPK) pathway, and expression levels of matrix...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorafenib; Interleukin 27; Proliferation; Apoptosis; Invasion; Akt/mTOR/MAPK.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800610

An agent-based simulation combined with group decision-making technique for improving the performance of an emergency department
Provedor de dados: 56
Autores: Yousefi,M.; Ferreira,R.P.M.
This study presents an agent-based simulation modeling in an emergency department. In a traditional approach, a supervisor (or a manager) allocates the resources (receptionist, nurses, doctors, etc.) to different sections based on personal experience or by using decision-support tools. In this study, each staff agent took part in the process of allocating resources based on their observation in their respective sections, which gave the system the advantage of utilizing all the available human resources during the workday by being allocated to a different section. In this simulation, unlike previous studies, all staff agents took part in the decision-making process to re-allocate the resources in the emergency department. The simulation modeled the behavior...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agent-based simulation; Patient flow; Decision making; Emergency department; Health industry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500701

Association between Toll-like receptor 4 Asp299Gly polymorphism and coronary heart disease susceptibility
Provedor de dados: 56
Autores: Wu,B.W.; Zhu,J.; Shi,H.M.; Jin,B.; Wen,Z.C.
Published data on the association between Toll-like receptor 4 (TLR4) Asp299Gly polymorphism and coronary heart disease (CHD) susceptibility are inconclusive. To derive a more precise estimation of the relationship, a meta-analysis was performed. English-language studies were identified by searching PubMed and Embase databases (up to November 2016). All epidemiological studies were regarding Caucasians because no TLR4 Asp/Gly and Gly/Gly genotypes have been detected in Asians. A total of 20 case-control studies involving 14,416 cases and 10,764 controls were included in the meta-analysis. Overall, no significant associations were found between TLR4 Asp299Gly polymorphism and CHD susceptibility in the dominant model (OR=0.89; 95%CI=0.74 to 1.06; P=0.20)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toll-like receptor 4; Polymorphism; Coronary heart disease; Meta-analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900609

Relationship between uric acid levels and risk of chronic kidney disease in a retrospective cohort of Brazilian workers
Provedor de dados: 56
Autores: Chini,L.S.N.; Assis,L.I.S.; Lugon,J.R.
Uric acid (UA) levels are increased in patients with kidney dysfunction. We analyzed the association between asymptomatic hyperuricemia and new-onset chronic kidney disease (CKD). A retrospective cohort study was designed to collect data from employees of an energy generation and distribution company in the city of Rio de Janeiro, Brazil, who had undergone the company’s annual medical checkup from 2008 to 2014. People with ≤2 years of follow-up, with baseline estimated glomerular filtration rate (eGFR) &lt;60 mL·min-1·(1.73 m2)-1 or with incomplete data were excluded. The endpoint was defined as eGFR &lt;60 mL·min-1·(1.73 m2)-1 estimated through the chronic kidney disease epidemiology collaboration equation (CKD-EPI). The study included 1094 participants....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronic kidney disease; Hyperuricemia; Glomerular filtration rate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900611

Circulating myeloid-derived suppressor cells predict disease activity and treatment response in patients with immune thrombocytopenia
Provedor de dados: 56
Autores: Zhou,J.; Zhou,Y.; Wen,J.; Sun,X.; Zhang,X.
Immune thrombocytopenia (ITP) is a disease characterized by isolated thrombocytopenia. Abnormal effector T cell activation is an important mechanism in the pathogenesis of ITP. Regulatory T cells (Treg) have a strong immunosuppressive function for T cell activation and their importance in the pathophysiology and clinical treatment of ITP has been confirmed. Myeloid-derived suppressor cells (MDSCs) are other immunosuppressive cells, which can also suppress T cell activation by secreting arginase, iNOS and ROS, and are essential for Treg cells’ differentiation and maturation. Therefore, we speculate that MDSCs might also be involved in the immune-dysregulation mechanism of ITP. In this study, we tested MDSCs and Treg cells in peripheral blood samples of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myeloid-derived suppressor cells; Immune thrombocytopenia; Regulatory T cells; Disease activity; Treatment response.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200704

LncRNA SNHG12 promotes cell growth and inhibits cell apoptosis in colorectal cancer cells
Provedor de dados: 56
Autores: Wang,J.Z.; Xu,C.L.; Wu,H.; Shen,S.J.
Several long non-coding RNA (lncRNA) might be correlated with the prognosis of colorectal cancer (CRC) and serve as a diagnostic and prognostic biomarker. However, the exact expression pattern of small nucleolar RNA host gene 12 (SNHG12) in colorectal cancer and its clinical significance remains unclear. The level of SNHG12 was detected by qRT-PCR in CRC tissues and CRC cells. MTT assay and colony formation assay were performed to examine the cell proliferation of CRC cells transfected with pcDNA-SNHG12 or si-SNHG12. Flow cytometry technology was used to detect cell cycle and cell apoptosis of CRC cells transfected with pcDNA-SNHG12 or si-SNHG12. The protein level of cell cycle progression-related molecules, including cyclin-dependent kinases (CDK4, CDK6),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SNHG12; Cell growth; Biomarker; Cell apoptosis; Colorectal cancer.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300604

Continuous blood purification treatment for endotoxin-induced acute respiratory distress syndrome
Provedor de dados: 56
Autores: Jiang,Y.; Lin,R.; Xu,Y.; Zhang,S.; Cui,K.; Zhu,M.; Li,A.; Chen,C.; Yang,J.; Yang,W.
This study aimed to explore the effects of continuous blood purification (CBP) treatment in pigs affected with acute respiratory distress syndrome (ARDS). A total of 12 healthy male pigs, weighing 12±1.8 kg, were randomly and equally assigned to the control and experimental groups. The ARDS pig model was prepared by intravenous injections of endotoxin (20 µg/kg). The control group was given conventional supportive therapy, while the experimental group was given continuous veno-venous hemofiltration therapy. During the treatment process, the variations in dynamic lung compliance, oxygenation index, hemodynamics, and urine volume per hour at different times (Baseline, 0, 2, 4, and 6 h) were recorded. The levels of tumor necrosis factor (TNF-α), interleukin 6...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute respiratory distress syndrome; Continuous blood purification treatment; Endotoxin; Hemodynamics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200604

Relationship between ventilation heterogeneity and exercise intolerance in adults with sickle cell anemia
Provedor de dados: 56
Autores: Lopes,A.J.; Marinho,C.L.; Alves,U.D.; Gonçalves,C.E.A.; Silva,P.O.; Botelho,E.C.; Bedirian,R.; Soares,A.R.; Maioli,M.C.P.
Sickle cell anemia (SCA) causes dysfunction of multiple organs, with pulmonary involvement as a major cause of mortality. Recently, there has been growing interest in the nitrogen single-breath washout (N2SBW) test, which is able to detect ventilation heterogeneity and small airway disease when the results of other pulmonary function tests (PFTs) are still normal. Thus, the objectives of the present study were to assess the heterogeneity in the ventilation distribution in adults with SCA and to determine the association between the ventilation distribution and the clinical, cardiovascular, and radiological findings. This cross-sectional study included 38 adults with SCA who underwent PFTs, echocardiography, computed tomography (CT), and 6-min walk test. To...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sickle cell anemia; Respiratory mechanics; Respiratory function tests; Ventilation; Exercise.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800607

Comparative efficacy and safety of contact force-sensing catheter and second-generation cryoballoon ablation for atrial fibrillation: a meta-analysis
Provedor de dados: 56
Autores: Zhou,X.; Lv,W.; Zhang,W.; Ye,Y.; Li,Y.; Zhou,Q.; Zhang,J.; Xing,Q.; Lu,Y.; Zhang,L.; Wang,H.; Qin,W.; Tang,B.
This meta-analysis compared the efficacy and safety of the contact force (CF)-sensing catheter and second-generation cryoballoon (CB) ablation for treating atrial fibrillation (AF). Six controlled clinical trials comparing ablation for AF using a CF-sensing catheter or second-generation CB were identified from PubMed, EMBASE, Cochrane Library, Wanfang Data, and China National Knowledge Infrastructure. The procedure duration was significantly lower in the CB group compared with that in the CF group [mean difference (MD)=29.4; 95%CI=17.84–40.96; P=0.01], whereas there was no difference between the groups for fluoroscopy duration (MD=0.59; 95%CI=–4.48–5.66; P=0.82). Moreover, there was no difference in the incidence of non-lethal complications (embolic event,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atrial fibrillation; Ablation; Contact force-sensing catheter; Second-generation cryoballoon; Meta-analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900607

MicroRNA-455 suppresses the oncogenic function of HDAC2 in human colorectal cancer
Provedor de dados: 56
Autores: Mao,Q.D.; Zhang,W.; Zhao,K.; Cao,B.; Yuan,H.; Wei,L.Z.; Song,M.Q.; Liu,X.S.
Colorectal cancer (CRC) is the fourth leading cause of cancer-induced mortality. Histone deacetylase 2 (HDAC2) is involved in prognosis and therapy of CRC. This study aimed to explore novel therapeutic targets for CRC. The alteration of HDAC2 expression in CRC tissues was estimated by qRT-PCR. After lentivirus transfection, HDAC2 knockdown was confirmed by western blot analysis. The effect of HDAC2 knockdown on cell proliferation was then assessed by 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. Screened by TargetScan, microRNA (miR)-455 was predicted to bind to 3′UTR of HDAC2 and the prediction was verified by luciferase assay. Finally, cells were transfected, respectively, with miR-455 mimics or miR-455 negative control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colorectal cancer; Histone deacetylase 2; MiR-455; Proliferation; Apoptosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600608

Serum total bilirubin levels are negatively correlated with metabolic syndrome in aged Chinese women: a community-based study
Provedor de dados: 56
Autores: Zhong,P.; Sun,D.M.; Wu,D.H.; Li,T.M.; Liu,X.Y.; Liu,H.Y.
We evaluated serum total bilirubin levels as a predictor for metabolic syndrome (MetS) and investigated the relationship between serum total bilirubin levels and MetS prevalence. This cross-sectional study included 1728 participants over 65 years of age from Eastern China. Anthropometric data, lifestyle information, and previous medical history were collected. We then measured serum levels of fasting blood-glucose, total cholesterol, triglycerides, and total bilirubin, as well as alanine aminotransferase activity. The prevalence of MetS and each of its individual component were calculated per quartile of total bilirubin level. Logistic regression was used to assess the correlation between serum total bilirubin levels and MetS. Total bilirubin level in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Total bilirubin; Metabolic syndrome; Oxidative stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200701

Impact of extracellular alkalinization on the survival of human CD24-/CD44+ breast cancer stem cells associated with cellular metabolic shifts
Provedor de dados: 56
Autores: Wanandi,S.I.; Yustisia,I.; Neolaka,G.M.G.; Jusman,S.W.A.
Cancer stem cells reside in a distinct region within the tumor microenvironment that it is believed to play a fundamental role in regulating stemness, proliferation, survival, and metabolism of cancer cells. This study aimed to analyze the effect of extracellular alkalinization on metabolism and survival of human CD24-/CD44+ breast cancer stem cells (BCSCs). BCSCs were cultured in alkalinized DMEM-F12 and incubated at 37°C, 5% CO2, and 20% O2 for 30 min, 6, 24, and 48 h. After each incubation period, we analyzed the modulation of various mRNA expressions related to pH and cellular metabolic regulation using the qRT-PCR. Metabolic state was measured using colorimetric and fluorometric assays. To examine cell proliferation and apoptosis, we used trypan blue...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extracellular alkalinization; Metabolic states; Breast cancer stem cells; Cell survival; NaHCO3.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800609

MicroRNA profiling identifies miR-7-5p and miR-26b-5p as differentially expressed in hypertensive patients with left ventricular hypertrophy
Provedor de dados: 56
Autores: Kaneto,C.M.; Nascimento,J.S.; Moreira,M.C.R.; Ludovico,N.D.; Santana,A.P.; Silva,R.A.A.; Silva-Jardim,I.; Santos,J.L.; Sousa,S.M.B.; Lima,P.S.P.
Recent evidence suggests that cell-derived circulating miRNAs may serve as biomarkers of cardiovascular diseases. However, a few studies have investigated the potential of circulating miRNAs as biomarkers for left ventricular hypertrophy (LVH). In this study, we aimed to characterize the miRNA profiles that could distinguish hypertensive patients with LHV, hypertensive patients without LVH and control subjects, and identify potential miRNAs as biomarkers of LVH. LVH was defined by left ventricular mass indexed to body surface area &gt;125 g/m2 in men and &gt;110 g/m2 in women and patients were classified as hypertensive when presenting a systolic blood pressure of 140 mmHg or more, or a diastolic blood pressure of 90 mmHg or more. We employed miRNA PCR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cardiovascular disease; Hypertension; Left ventricular hypertrophy; MicroRNAs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200605

Silencing of augmenter of liver regeneration inhibited cell proliferation and triggered apoptosis in U266 human multiple myeloma cells
Provedor de dados: 56
Autores: Zeng,H.Q.; Luo,Y.; Lou,S.F.; Liu,Q.; Zhang,L.; Deng,J.C.
Augmenter of liver regeneration (ALR) is a thermostable cytokine that was originally identified to promote the growth of hepatocytes. This study was conducted to explore the expression and function of ALR in multiple myeloma (MM), a common hematologic malignancy. Real-time PCR and western blot analysis were performed to detect the expression of ALR in U266 human MM cells and healthy peripheral blood mononuclear cells (PBMCs). U266 MM cells were exposed to 20 or 40 μg/mL of recombinant ALR and tested for cell proliferation. Small interfering RNA-mediated silencing of ALR was done to investigate the role of ALR in cell proliferation, apoptosis, and cytokine production. Compared to PBMCs, U266 MM cells exhibited significantly higher levels of ALR at both the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apoptosis; Augmenter of liver regeneration; Hematologic cancer; Proliferation; Small interfering RNA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000611

Spirometry reference values in the Brazilian population
Provedor de dados: 56
Autores: Rufino,R.; Costa,C.H.; Lopes,A.J.; Maiworm,A.I.; Maynard,K.; Silva,L.M.R.A.; Dias,R.M.
The aim of the present study was to provide new spirometry reference equations in a sample of the Brazilian population for the following parameters: forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), FEV1/FVC ratio, peak of expiratory flow (PEF), forced expiratory flow at 50% (FEF50%), 75% average vital capacity (FEF25-75%), and average forced expiratory flow time (FEFT). This was a prospective study using results from chest radiographs, electrocardiograms, and questionnaires to investigate the participants' respiratory symptoms, sedentarism, and comorbidities (Charlson comorbidity index). From December 2010 to July 2014, individuals were randomly selected from various locations in the state of Rio de Janeiro. All individuals were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spirometry; Lung function test; Reference values; FVC; FEV1.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300703

Lipoprotein(a) as a predictor of poor collateral circulation in patients with chronic stable coronary heart disease
Provedor de dados: 56
Autores: Fan,Y.; Hu,J.-S.; Guo,F.; Lu,Z.-B.; Xia,H.
As a mechanism compensating for obstructive coronary artery disease, coronary collateral circulation (CCC) has attracted cardiologists for a long time to explore its potential impact. In the present study, Chinese patients suffering from ≥95% coronary stenosis, as diagnosed by angiography, have been investigated for the correlation between CCC and lipoprotein(a) [Lp(a)] levels. A cohort of 654 patients was divided into four categories according to Rentrop grades 0, 1, 2, and 3. Lp(a) levels were divided into model 1, discretized with critical values of 33 and 66%, and model 2, discretized with a cutoff value of 30.0 mg/dL. Furthermore, we evaluated the correlation between CCC and serum Lp(a) levels. The four groups had significantly different Lp(a) levels...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipoprotein(a); Coronary collateral circulation; Predictor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800606

Extracellular diffusion quantified by magnetic resonance imaging during rat C6 glioma cell progression
Provedor de dados: 56
Autores: Song,G.; Luo,T.; Dong,L.; Liu,Q.
Solution reflux and edema hamper the convection-enhanced delivery of the standard treatment for glioma. Therefore, a real-time magnetic resonance imaging (MRI) method was developed to monitor the dosing process, but a quantitative analysis of local diffusion and clearance parameters has not been assessed. The objective of this study was to compare diffusion into the extracellular space (ECS) at different stages of rat C6 gliomas, and analyze the effects of the extracellular matrix (ECM) on the diffusion process. At 10 and 20 days, after successful glioma modeling, gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) was introduced into the ECS of rat C6 gliomas. Diffusion parameters and half-life of the reagent were then detected using MRI, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: C6 glioma model; Extracellular space; Magnetic resonance imaging; Rats.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700610

Myostatin promotes distinct responses on protein metabolism of skeletal and cardiac muscle fibers of rodents
Provedor de dados: 56
Autores: Manfredi,L.H.; Paula-Gomes,S.; Zanon,N.M.; Kettelhut,I.C.
Myostatin is a novel negative regulator of skeletal muscle mass. Myostatin expression is also found in heart in a much less extent, but it can be upregulated in pathological conditions, such as heart failure. Myostatin may be involved in inhibiting protein synthesis and/or increasing protein degradation in skeletal and cardiac muscles. Herein, we used cell cultures and isolated muscles from rats to determine protein degradation and synthesis. Muscles incubated with myostatin exhibited an increase in proteolysis with an increase of Atrogin-1, MuRF1 and LC3 genes. Extensor digitorum longus muscles and C2C12 myotubes exhibited a reduction in protein turnover. Cardiomyocytes showed an increase in proteolysis by activating autophagy and the ubiquitin proteasome...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myostatin; Skeletal muscle; Cardiomyocytes; Protein degradation; Protein synthesis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200604

Comparison of outcomes between off-pump versus on-pump coronary artery bypass surgery in elderly patients: a meta-analysis
Provedor de dados: 56
Autores: Zhu,Z.G.; Xiong,W.; Ding,J.L.; Chen,J.; Li,Y.; Zhou,J.L.; Xu,J.J.
The aim of this study was to analyze if off-pump coronary artery bypass surgery (CABG) is associated with better treatment outcomes in elderly patients (&gt;70 years of age) than on-pump CABG, using meta-analysis. Medline, PubMed, Cochrane and Google Scholar databases were searched until September 13, 2016. Sensitivity and quality assessment were performed. Twenty-two studies, three randomized control trials (RCTs) and 20 non-RCTs were included with 24,127 patients. The risk of death associated with on-pump or off-pump CABG in the RCTs were similar (pooled OR=0.945, 95%CI=0.652 to 1.371, P=0.766). However, in the non-RCTs, mortality risk was lower in patients treated with off-pump CABG than on-pump CABG (pooled OR=0.631, 95%CI=0.587 to 0.944, P=0.003). No...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coronary artery bypass grafting/CABG; Off-pump; On-pump; Elderly; Meta-analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300704

Resistance training attenuates salt overload-induced cardiac remodeling and diastolic dysfunction in normotensive rats
Provedor de dados: 56
Autores: Barretti,D.L.M.; Melo,S.F.S.; Oliveira,E.M.; Barauna,V.G.
Elevated salt intake induces changes in the extracellular matrix collagen, leading to myocardial stiffness and impaired relaxation. Resistance training (RT) has been used as a remarkably successful strategy in the treatment of heart disease. Therefore, the aim of this study was to investigate the effects of RT on preventing pathological adaptation of the left ventricle (LV) induced by salt overload. Male Wistar rats (10 weeks old) were distributed into four groups (n=8/group): control (CO), control+1% salt (CO+SALT), RT and RT+1% salt (RT+SALT). The RT protocol consisted of 4×12 bouts of squat training, 5/week for 8 weeks, with 80% of one repetition maximum (1RM). Echocardiographs were analyzed and interstitial collagen volume fraction (CVF) was determined...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diastolic dysfunction; Interstitial collagen; Resistance training; Salt overload.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900603

Xuezhikang reduced arterial stiffness in patients with essential hypertension: a preliminary study
Provedor de dados: 56
Autores: Zheng,J.; Xiao,T.; Ye,P.; Miao,D.; Wu,H.
This study aimed to test the effects of xuezhikang, a cholestin extract that contains statin-like components, on arterial stiffness in patients with essential hypertension. One hundred hypertensive patients from the Chinese PLA General Hospital were randomly allocated to receive xuezhikang (1200 mg/day, orally) or placebo (same capsules containing only pharmaceutical excipients). Physical examination outcomes, lipid profile, high sensitivity C-reactive protein (hs-CRP) levels, matrix metalloproteinases-9 (MMP-9) levels, and arterial outcomes, including stiffness parameter (β), pressure-strain elasticity modulus (Ep), arterial compliance (AC), augmentation index (AI), and one-point pulse wave velocity (PWVβ) were obtained at baseline and after 6 months of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arterial stiffness; Essential hypertension; Pulse wave velocity; Xuezhikang; Lipid profile.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000613

Influence of antihypertensive drugs on aortic and coronary effects of Ang-(1-7) in pressure-overloaded rats
Provedor de dados: 56
Autores: Nunes,A.D.C.; Souza,A.P.S.; Macedo,L.M.; Alves,P.H.; Pedrino,G.R.; Colugnati,D.B.; Mendes,E.P.; Santos,R.A.S.; Castro,C.H.
This study investigated the influence of antihypertensive drugs, such as angiotensin-converting enzyme inhibitors (ACEIs), AT1 receptor blockers (ARBs), voltage-gated L-type calcium channel blockers, and mineralocorticoid receptor antagonists (MRAs), on the effects of angiotensin-(1-7) [Ang-(1-7)] on aorta and coronary arteries from pressure-overloaded rats. Pressure overload was induced by abdominal aortic banding (AB). To evaluate the role of antihypertensive drugs on the effect of Ang-(1-7), AB male Wistar rats weighing 250–300 g were treated with vehicle or low doses (5 mg·kg-1·day-1, gavage) of losartan, captopril, amlodipine, or spironolactone. Isolated aortic rings and isolated perfused hearts under constant flow were used to evaluate the effect of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Angiotensin-(1-7); Renin-angiotensin system; Coronary artery; Antihypertensive drugs; Cardiac hypertrophy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400604

Retraction notice for: Characteristics of liver fibrosis with different etiologies using a fully quantitative fibrosis assessment tool [Braz J Med Biol Res (2017) 50(6): e5234]
Provedor de dados: 56
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700951

A novel frameshift mutation of Chediak-Higashi syndrome and treatment in the accelerated phase
Provedor de dados: 56
Autores: Wu,X.L.; Zhao,X.Q.; Zhang,B.X.; Xuan,F.; Guo,H.M.; Ma,F.T.
Chediak-Higashi syndrome (CHS) is a rare autosomal recessive immunodeficiency disease characterized by frequent infections, hypopigmentation, progressive neurologic deterioration and hemophagocytic lymphohistiocytosis (HLH), known as the accelerated phase. There is little experience in the accelerated phase of CHS treatment worldwide. Here, we present a case of a 9-month-old boy with continuous high fever, hypopigmentation of the skin, enlarged lymph nodes, hepatosplenomegaly and lung infection. He was diagnosed with CHS by gene sequencing, and had entered the accelerated phase. After 8 weeks of therapy, the boy had remission and was prepared for allogenic stem cell transplantation.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Chediak-Higashi syndrome; Accelerated phase; Gene sequencing; Therapy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400501

35 years of the Brazilian Journal of Medical and Biological Research
Provedor de dados: 56
Autores: Rego,E.M.; Pereira Leite,J.; Bensenor,I.; Chammas,R.; Nogueira de Francischi,J.; da Luz,P.L.
The authors pay homage to the three founders of the Brazilian Journal of Medical and Biological Research Profs. Lewis Joel Greene, Sérgio Henrique Ferreira and Eduardo Moacyr Krieger for their vision and commitment to divulge the scientific production of developing countries.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100101

Erratum for: Primary cultures of mouse small intestinal epithelial cells using the dissociating enzyme type I collagenase and hyaluronidase
Provedor de dados: 56
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700901

Salinomycin enhances doxorubicin sensitivity through reversing the epithelial-mesenchymal transition of cholangiocarcinoma cells by regulating ARK5
Provedor de dados: 56
Autores: Yu,Z.; Cheng,H.; Zhu,H.; Cao,M.; Lu,C.; Bao,S.; Pan,Y.; Li,Y.
Chemotherapy response rates in patients with cholangiocarcinoma remain low, primarily due to the development of drug resistance. Epithelial-mesenchymal transition (EMT) of cancer cells is widely accepted to be important for metastasis and progression, but it has also been linked to the development of chemoresistance. Salinomycin (an antibiotic) has shown some potential as a chemotherapeutic agent as it selectively kills cancer stem cells, and has been hypothesized to block the EMT process. In this study, we investigated whether salinomycin could reverse the chemoresistance of cholangiocarcinoma cells to the chemotherapy drug doxorubicin. We found that combined salinomycin with doxorubicin treatment resulted in a significant decrease in cell viability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemotherapy; Cholangiocarcinoma; Drug resistance; Doxorubicin; Salinomycin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000607

Synthesis and evaluation of coumarin derivatives against human lung cancer cell lines
Provedor de dados: 56
Autores: Weng,K.-G.; Yuan,Y.-L.
Series of novel coumarin derivatives [I (a–d) and II (a–d)] were successfully synthesized and their structures were determined based on infrared 1H-nuclear magnetic resonance (NMR), HRMS, and single crystal X-ray crystallography. Additionally, the new synthesized compounds were evaluated to identify the molecular characteristics that contribute to their cytotoxicity, which was tested against SK-LU-1, SPC-A-1 and 95D human lung cancer cell lines, using the MTT assay. The results of this study showed that compounds Ic, Id, IIc, and IId exhibited an efficient percentage of inhibition of cell proliferation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coumarin; X-ray; Lung cancer.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100603

Retinoic acid protects from experimental cerebral infarction by upregulating GAP-43 expression
Provedor de dados: 56
Autores: Li,Y.; Gao,X.; Wang,Q.; Yang,Y.; Liu,H.; Zhang,B.; Li,L.
The aim of this study was to investigate whether exogenous retinoic acid (RA) can upregulate the mRNA and protein expression of growth-associated protein 43 (GAP-43), thereby promoting brain functional recovery in a rat distal middle cerebral artery occlusion (MCAO) model of ischemia. A total of 216 male Sprague Dawley rats weighing 300–320 g were divided into 3 groups: sham-operated group, MCAO+vehicle group and MCAO+RA group. Focal cortical infarction was induced with a distal MCAO model. The expression of GAP-43 mRNA and protein in the ipsilateral perifocal region was assessed using qPCR and immunocytochemistry at 1, 3, 7, 14, 21, and 28 days after distal MCAO. In addition, an intraperitoneal injection of RA was given 12 h before MCAO and continued...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Focal cerebral infarction; Growth associate protein 43; Retinoic acid; Nerve regeneration.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400606

Application of data mining techniques to explore predictors of upper urinary tract damage in patients with neurogenic bladder
Provedor de dados: 56
Autores: Fang,H.; Lu,B.; Wang,X.; Zheng,L.; Sun,K.; Cai,W.
This study proposed a decision tree model to screen upper urinary tract damage (UUTD) for patients with neurogenic bladder (NGB). Thirty-four NGB patients with UUTD were recruited in the case group, while 78 without UUTD were included in the control group. A decision tree method, classification and regression tree (CART), was then applied to develop the model in which UUTD was used as a dependent variable and history of urinary tract infections, bladder management, conservative treatment, and urodynamic findings were used as independent variables. The urethra function factor was found to be the primary screening information of patients and treated as the root node of the tree; Pabd max (maximum abdominal pressure, &gt;14 cmH2O), Pves max (maximum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neurogenic bladder; Upper urinary tract damage; Decision tree model; Urodynamics; Urethra function.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000603

Effects of herbal medicine Sijunzi decoction on rabbits after relieving intestinal obstruction
Provedor de dados: 56
Autores: Li,L.; Zou,C.; Zhou,Z.; Yu,X.
Intestinal obstruction leads to blockage of the movement of intestinal contents. After relieving the obstruction, patients might still suffer with compromised immune function and nutritional deficiency. This study aimed to evaluate the effects of Sijunzi decoction on restoring the immune function and nutritional status after relieving the obstruction. Experimental rabbits (2.5±0.2 kg) were randomly divided into normal control group, 2-day intestinal obstruction group, 2-day natural recovery group, 4-day natural recovery group, 2-day treated group, and 4-day treated group. Sijunzi decoction was given twice a day to the treated groups. The concentration of markers was analyzed to evaluate the immune function and nutritional status. The concentration of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative medicine; Herbal medicine; Immune function; Intestinal obstruction; Nutritional status.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100608

Species distribution and antifungal susceptibility patterns of Candida isolates from a public tertiary teaching hospital in the Eastern Cape Province, South Africa
Provedor de dados: 56
Autores: Mnge,P.; Okeleye,B.I.; Vasaikar,S.D.; Apalata,T.
Candida species are the leading cause of invasive fungal infections, and over the past decade there has been an increased isolation of drug resistant Candida species. This study aimed to identify the species distribution of Candida isolates and to determine their unique antifungal susceptibility and resistance patterns. During a cross-sectional study, 209 Candida isolates (recovered from 206 clinical samples) were collected and their species distribution was determined using ChromAgar Candida. The Vitek-2 system (Biomerieux, South Africa) was used to determine minimum inhibitory concentrations (MICs) to azoles (fluconazole, voriconazole), echinocandins (caspofungin, micafungin), polyenes (amphotericin B) and flucytosine. Four species of Candida were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Candida species; Distribution; Antifungal susceptibility; Identification; South Africa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600702

Total phenolic, flavonoid, alkaloid and iridoid content and preventive effect of Lider-7-tang on lipopolysaccharide-induced acute lung injury in rats
Provedor de dados: 56
Autores: Erdenechimeg,Ch.; Guiqide,A.; Dejidmaa,B.; Chimedragchaa,Ch.; Purevsuren,S.
Lider-7-tang, a medicine used for the treatment of respiratory diseases especially pneumonia and fever in Mongolian Traditional Medicine, was selected for this phytochemical and pharmacological study. The objectives of the study were to determine total biological active substances and analyze the effects of Lider-7-tang treatment in rats with acute lung injury (ALI). Quantitative determination of the total active constituents (phenolic, flavonoid, iridoid and alkaloid) of the methanol extract of Lider-7-tang was performed using Folin-Ciocalteu reagent, aluminum chloride reagent, Trim-Hill reagent, and Bromocresol green reagent, respectively. A total of fifty 8–10-week-old male Wistar rats (200–240 g) were randomized into three groups: control group,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Traditional medicine; Lider-7-tang; Phenolic; Acute lung injury; Lipopolysaccharide.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200609

Adiponectin inhibits oxidization-induced differentiation of T helper cells through inhibiting costimulatory CD40 and CD80
Provedor de dados: 56
Autores: Xiao,Y.; Deng,T.; Shang,Z.; Wang,D.
Adiponectin is a multifunctional adipokine that has several oligomeric forms in the blood stream, which broadly regulates innate and acquired immunity. Therefore, in this study, we aimed to observe the differentiation of T helper (Th) cells and expression of costimulatory signaling molecules affected by adiponectin. The mRNA and protein expression levels of adiponectin and its receptors in oxidized low density lipoprotein cholesterol-treated endothelial cells were assayed by real time PCR and immunofluorescence. The endothelial cells were then treated with adiponectin with or without adipoR1 or adipoR2 siRNA and co-cultured with T lymphocytes. The distribution of Th1, Th2 and Th17 subsets were assayed by flow cytometry. The effects of adiponectin on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adiponectin; T helper cells; HLA-DR; CD80; CD40.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600606

Methotrexate associated to lipid core nanoparticles improves cardiac allograft vasculopathy and the inflammatory profile in a rabbit heart graft model
Provedor de dados: 56
Autores: Fiorelli,A.I.; Lourenço-Filho,D.D.; Tavares,E.R.; Carvalho,P.O.; Marques,A.F.; Gutierrez,P.S.; Maranhão,R.C.; Stolf,N.A.G.
Coronary allograft vasculopathy is an inflammatory-proliferative process that compromises the long-term success of heart transplantation and has no effective treatment. A lipid nanoemulsion (LDE) can carry chemotherapeutic agents in the circulation and concentrates them in the heart graft. The aim of the study was to investigate the effects of methotrexate (MTX) associated to LDE. Rabbits fed a 0.5% cholesterol diet and submitted to heterotopic heart transplantation were treated with cyclosporine A (10 mg·kg–1·day–1 orally) and allocated to treatment with intravenous LDE-MTX (4 mg/kg, weekly, n=10) or with weekly intravenous saline solution (control group, n=10), beginning on the day of surgery. Animals were euthanized 6 weeks later. Compared to controls,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nanoemulsions; Solid lipid particles; Methotrexate; Inflammatory mediators; LDL receptors.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000608

Association between MFN2 gene polymorphisms and the risk and prognosis of acute liver failure: a case-control study in a Chinese population
Provedor de dados: 56
Autores: Wei,Y.-L.; Tian,Q.; Zhao,X.-X.; Qiu,G.-Z.; Xu,Y.
This study aimed to determine the role of mitofusin 2 (MFN2) gene polymorphisms in the risk and prognosis of acute liver failure (ALF). A total of 298 blood samples were collected from 138 ALF patients (case group) and 160 healthy participants (control group). Coagulation function, glutamic pyruvic transaminase (GPT), glutamic oxaloacetic transaminase (GOT), total bilirubin (TB), blood ammonia and lactic acid (LA) were measured. The predictive evaluation of MFN2 gene polymorphisms in the risk and prognosis of ALF patients was estimated using Kaplan-Meier survival analysis, haplotype analysis, binary logistic regression analysis and Cox regression analysis. Higher levels of GPT, GOT, TB, blood ammonia and LA were observed in ALF patients with the GG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute liver failure; MFN2; Gene polymorphism; Risk; Prognosis; Chinese population.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600605

Effects of a 4-week high-intensity interval training on pacing during 5-km running trial
Provedor de dados: 56
Autores: Silva,R.; Damasceno,M.; Cruz,R.; Silva-Cavalcante,M.D.; Lima-Silva,A.E.; Bishop,D.J.; Bertuzzi,R.
This study analyzed the influence of a 4-week high-intensity interval training on the pacing strategy adopted by runners during a 5-km running trial. Sixteen male recreational long-distance runners were randomly assigned to a control group (CON, n=8) or a high-intensity interval training group (HIIT, n=8). The HIIT group performed high-intensity interval-training twice per week, while the CON group maintained their regular training program. Before and after the training period, the runners performed an incremental exercise test to exhaustion to measure the onset of blood lactate accumulation, maximal oxygen uptake (VO2max), and peak treadmill speed (PTS). A submaximal constant-speed test to measure the running economy (RE) and a 5-km running trial on an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rating of perceived exertion; Running economy; Peak treadmill speed; Maximal oxygen uptake.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200612

Cordyceps sinensis promotes immune regulation and enhances bacteriostatic activity of PA-824 via IL-10 in Mycobacterium tuberculosis disease
Provedor de dados: 56
Autores: Li,D.G.; Ren,Z.X.
PA-824 is a novel bicyclic nitroimidazole anti-tuberculosis (TB) drug. Cordyceps sinensis (Berk.) Sacc. (CS) was proven to be a good immunomodulatory compound. This research aimed to investigate the effect of CS on PA-824 in Mycobacterium tuberculosis (M.tb) infected mice (female CBA/J mice, 6 to 8 weeks of age and 20±2 g of weight). Mice were randomly assigned to 4 groups: PA-824, CS, PA-824+CS, and control. To verify the effect of PA-824 and CS on M.tb, after drug administration, mice lungs were harvested and bacterial colony formations were measured. Cells were isolated from infected lungs and spleens to analyze the percentage of CD4+ T cells (CD11a positive). Lung cells were cultured to detect the secretion of interferon-γ (IFN-γ) and interleukin-10...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis; Cordyceps sinensis (Berk.) Sacc.; PA-824; IFN-γ; IL-10.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900604

Association between ADAM metallopeptidase domain 33 gene polymorphism and risk of childhood asthma: a meta-analysis
Provedor de dados: 56
Autores: Sun,F.J.; Zou,L.Y.; Tong,D.M.; Lu,X.Y.; Li,J.; Deng,C.B.
This study aimed to investigate the association between ADAM metallopeptidase domain 33 (ADAM33) gene polymorphisms and the risk of childhood asthma. The relevant studies about the relationship between ADAM33 gene polymorphisms and childhood asthma were searched from electronic databases and the deadline of retrieval was May 2016. The single nucleotide polymorphisms (SNPs) of ADAM33 (rs511898, rs2280092, rs3918396, rs528557, rs2853209, rs44707, rs2280091 and rs2280089) were analyzed based on several models including the allele, codominant, recessive and dominant models. The results showed that the ADAM33 rs2280091 polymorphism in all four genetic models was associated with an increased risk of childhood asthma. Positive associations were also found between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Childhood; Asthma; ADAM33; Gene polymorphisms; Asthma risk; Meta-analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000609

Efficacy of minimally invasive tonsil surgery for treatment of obstructive sleep apnea-hypopnea syndrome in children
Provedor de dados: 56
Autores: Zhang,X.-Q.; Wang,H.; Zhou,J.; Zeng,P.; Zhao,Y.; Zhang,Y.; Liu,C.; Jiang,L.-Q.; Lan,Y.-J.
This study aimed to investigate the efficacy of minimally invasive tonsil surgery for the treatment of obstructive sleep apnea-hypopnea syndrome (OSAHS) in children. Tonsil ablation or turbinate reduction was performed on 49 pediatric patients with OSAHS by minimally invasive tonsil surgery. In order to evaluate the efficacy of surgery, a comparison was conducted between pre-operation and post-operation data in terms of the symptoms, signs and polysomnography test. Total effectiveness rate of the surgery was 83.7%. Subgroup analysis was also performed based on the severity of their conditions: mild, moderate, and severe groups had an effectiveness rate of 90.0, 88.9, and 66.7%, respectively (Hc=6.665, P&lt;0.05). Postoperatively, the apnea-hypopnea index,...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Tonsil; Children; Obstructive sleep apnea-hypopnea syndrome; Polysomnography; Surgery.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500703

Cytokine profile in childhood-onset systemic lupus erythematosus: a cross-sectional and longitudinal study
Provedor de dados: 56
Autores: Cavalcanti,A.; Santos,R.; Mesquita,Z.; Duarte,A.L.B.P.; Lucena-Silva,N.
Childhood-onset systemic lupus erythematosus (cSLE) exhibits an aggressive clinical phenotype and severe complications. This could be due to a pro-inflammatory cytokine milieu. Therefore, we determined plasma levels of Th1 (IL-2, IFN-γ, TNF), Th2 (IL-4), Th17 (IL-17A, IL-6), and Treg (IL-10) cytokines in a cohort of cSLE patients and healthy controls, and we evaluated the association between these cytokines and disease activity. We conducted a cross-sectional study with 51 cSLE patients from two pediatric rheumatology services. Ten cSLE patients participated in a longitudinal follow-up study. Blood samples were collected from the same patient during active and inactive disease. Disease activity was evaluated according to SLE Disease Activity Index 2000...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytokines; Childhood-onset systemic lupus erythematosus; Disease activity; SLEDAI-2K; Inflammation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400704

Effect of tobacco smoke on hydrogen sulfide-induced rat thoracic aorta relaxation
Provedor de dados: 56
Autores: Zhang,H.T.; Zhang,T.; Chai,M.; Sun,J.J.; Yu,X.Y.; Liu,C.Z.; Huang,C.C.
Levels of hydrogen sulfide (H2S), a gaseous signaling molecule, are reduced in the serum of individuals who smoke. We hypothesized that tobacco smoke influenced smooth muscle relaxation by decreasing H2S levels and this effect could also influence expression of cystathionine γ-lyase (CSE) and sulfonylurea receptor-2 (SUR-2). The aim of this study was to explore the effect of tobacco smoke on H2S-mediated rat thoracic aorta relaxation and its possible mechanism. Thirty-two Sprague-Dawley rats were divided into four groups: control (C) group, short-term smoker (SS) group, mid-term smoker (MS) group, and long-term smoker (LS) group. H2S concentrations in serum, action of H2S on rat aortic vascular relaxation, and expression of CSE and SUR-2 in thoracic aortic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tobacco smoke; Hydrogen sulfide; Cardiac smooth muscle; Cystathionine-γ-lyase; Sulfonylurea receptor-2.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200602

PDK2 promotes chondrogenic differentiation of mesenchymal stem cells by upregulation of Sox6 and activation of JNK/MAPK/ERK pathway
Provedor de dados: 56
Autores: Wang,H.; Shan,X.B.; Qiao,Y.J.
This study was undertaken to clarify the role and mechanism of pyruvate dehydrogenase kinase isoform 2 (PDK2) in chondrogenic differentiation of mesenchymal stem cells (MSCs). MSCs were isolated from femurs and tibias of Sprague-Dawley rats, weighing 300-400 g (5 females and 5 males). Overexpression and knockdown of PDK2 were transfected into MSCs and then cell viability, adhesion and migration were assessed. Additionally, the roles of aberrant PDK2 in chondrogenesis markers SRY-related high mobility group-box 6 (Sox6), type ΙΙ procollagen gene (COL2A1), cartilage oligomeric matrix protein (COMP), aggrecan (AGC1), type ΙX procollagen gene (COL9A2) and collagen type 1 alpha 1 (COL1A1) were measured by quantitative reverse-transcription polymerase chain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyruvate dehydrogenase kinase isoform 2; Chondrogenic differentiation; Mesenchymal stem cell; SRY-related high mobility group-box 6; C-Jun N-terminal kinase (JNK).
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200606

Kaempferol inhibited VEGF and PGF expression and in vitro angiogenesis of HRECs under diabetic-like environment
Provedor de dados: 56
Autores: Xu,X.H.; Zhao,C.; Peng,Q.; Xie,P.; Liu,Q.H.
Diabetic retinopathy (DR) is one of the common and specific microvascular complications of diabetes. This study aimed to investigate the anti-angiogenic effect of kaempferol and explore its underlying molecular mechanisms. The mRNA expression level of vascular endothelial growth factor (VEGF) and placenta growth factor (PGF) and the concentrations of secreted VEGF and PGF were measured by qTR-PCR and ELISA assay, respectively. Human retinal endothelial cells (HRECs) proliferation, migration, and sprouting were measured by CCK-8 and transwell, scratching wound, and tube formation assays, respectively. Protein levels were determined by western blot. High glucose (25 mM) increased the mRNA expression levels of VEGF and PGF as well as the concentrations of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetic retinopathy; Kaempferol; VEGF; PGF; Anti-angiogenic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300605

Effects of N-acetylcysteine on spinal cord oxidative stress biomarkers in rats with neuropathic pain
Provedor de dados: 56
Autores: Horst,A.; de Souza,J.A.; Santos,M.C.Q.; Riffel,A.P.K.; Kolberg,C.; Partata,W.A.
N-acetylcysteine (NAC) inhibits nociceptive transmission. This effect has been associated partly with its antioxidant properties. However, the effect of NAC on the levels of lipid hydroperoxides (a pro-oxidant marker), content of ascorbic acid (a key antioxidant molecule of nervous tissue) and total antioxidant capacity (TAC) is unknown. Thus, our study assessed these parameters in the lumbosacral spinal cord of rats with chronic constriction injury (CCI) of the sciatic nerve, one of the most commonly employed animal models of neuropathic pain. Thirty-six male Wistar rats weighing 200–300 g were equally divided into the following groups: Naive (rats did not undergo surgical manipulation); Sham (rats in which all surgical procedures involved in CCI were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipid hydroperoxides; Total antioxidant capacity; Ascorbic acid; Chronic constriction injury; Antinociception.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200607

Bradykinin, insulin, and glycemia responses to exercise performed above and below lactate threshold in individuals with type 2 diabetes
Provedor de dados: 56
Autores: Asano,R.Y.; Browne,R.A.V.; Sales,M.M.; Arsa,G.; Moraes,J.F.V.N.; Coelho-Júnior,H.J.; Moraes,M.R.; Oliveira-Silva,I.; Atlas,S.E.; Lewis,J.E.; Simões,H.G.
The aim of this study was to analyze the acute responses of bradykinin, insulin, and glycemia to exercise performed above and below lactate threshold (LT) in individuals with type 2 diabetes mellitus (T2D). Eleven participants with a diagnosis of T2D randomly underwent three experimental sessions 72 h apart: 1) 20 min of exercise performed at 120% of LT (120%LT), 2) 20 min of exercise performed at 80% of LT (80%LT), and 3) 20 min of control session. Blood glucose was analyzed before, during, and at 45 min post-exercise. Bradykinin and insulin were analyzed before and at 45 min post-exercise. Both exercise sessions elicited a parallel decrease in glucose level during exercise (P≤0.002), with a greater decrease being observed for 120%LT (P=0.005). Glucose...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolic disease; Aerobic exercise; Peptide; Insulin resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100607

Propofol inhibits lung cancer cell viability and induces cell apoptosis by upregulating microRNA-486 expression
Provedor de dados: 56
Autores: Yang,N.; Liang,Y.; Yang,P.; Yang,T.; Jiang,L.
Propofol is a frequently used intravenous anesthetic agent. Recent studies show that propofol exerts a number of non-anesthetic effects. The present study aimed to investigate the effects of propofol on lung cancer cell lines H1299 and H1792 and functional role of microRNA (miR)-486 in these effects. H1299 and/or H1792 cells were treated with or without propofol and transfected or not with miR-486 inhibitor, and then cell viability and apoptosis were analyzed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and flow cytometry. The expression of miR-486 was determined by quantitative real-time polymerase chain reaction (qRT-PCR) with or without propofol treatment. Western blot was performed to analyze the protein expression of Forkhead...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propofol; Lung cancer; Cell viability; Cell apoptosis; MicroRNA-486.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100601

Noninvasive intracranial pressure monitoring for HIV-associated cryptococcal meningitis
Provedor de dados: 56
Autores: Bollela,V.R.; Frigieri,G.; Vilar,F.C.; Spavieri Jr,D.L.; Tallarico,F.J.; Tallarico,G.M.; Andrade,R.A.P.; de Haes,T.M.; Takayanagui,O.M.; Catai,A.M.; Mascarenhas,S.
Mortality and adverse neurologic sequelae from HIV-associated cryptococcal meningitis (HIV-CM) remains high due to raised intracranial pressure (ICP) complications. Cerebrospinal fluid (CSF) high opening pressure occurs in more than 50% of HIV-CM patients. Repeated lumbar puncture with CSF drainage and external lumbar drainage might be required in the management of these patients. Usually, there is a high grade of uncertainty and the basis for clinical decisions regarding ICP hypertension tends to be from clinical findings (headache, nausea and vomiting), a low Glasgow coma scale score, and/or fundoscopic papilledema. Significant neurological decline can occur if elevated CSF pressures are inadequately managed. Various treatment strategies to address...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Brain diseases; Intracranial hypertension; AIDS-related opportunistic infections; Cryptococcus neoformans; Monitoring.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900501

Treatment of a subdural empyema complicated by intracerebral abscess due to Brucella infection
Provedor de dados: 56
Autores: Zhang,J.; Chen,Z.; Xie,L.; Zhao,C.; Zhao,H.; Fu,C.; Chen,G.; Hao,Z.; Wang,L.; Li,W.
A 55-year-old male presented with fever, stupor, aphasia, and left hemiparesis. A history of head trauma 3 months before was also reported. Cranial magnetic resonance imaging revealed slight contrast enhancement of lesions under the right frontal skull plate and right frontal lobe. Because of deterioration in nutritional status and intracranial hypertension, the patient was prepared for burr hole surgery. A subdural empyema (SDE) recurred after simple drainage. After detection of Brucella species in SDE, craniotomy combined with antibiotic treatment was undertaken. The patient received antibiotic therapy for 6 months (two doses of 2 g ceftriaxone, two doses of 100 mg doxycycline, and 700 mg rifapentine for 6 months) that resulted in complete cure of the...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Subdural empyema; Neurobrucellosis; Craniotomy; Infection; Treatment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500501

Extremely elevated IL-18 levels may help distinguish systemic-onset juvenile idiopathic arthritis from other febrile diseases
Provedor de dados: 56
Autores: Xia,Y.; Cui,P.; Li,Q.; Liang,F.; Li,C.; Yang,J.
The aim of this research was to explore whether IL-18 can be a serological marker for the diagnosis of systemic-onset juvenile idiopathic arthritis (sJIA). A total of 23 sJIA patients (13 males, median age 8.2), 20 acute lymphoblastic leukemia (ALL) patients, 18 patients with severe infections (SIF), 26 Kawasaki disease (KD) patients, 18 juvenile idiopathic arthritis (JIA) patients, and 25 healthy control patients were selected for this study. Enzyme-linked immunosorbent assays (ELISAs) were used to determine the serum concentrations of the S100A8, S100A9, and IL-6 proteins. The serum IL-18 levels were detected by a cytometric bead array (CBA). The serum IL-6 concentrations in various disease groups were significantly higher than that in the healthy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Systemic-onset juvenile idiopathic arthritis (sJIA); Serological markers; IL-18; S100A8/S100A9.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200703

Is there a role for voltage-gated Na+ channels in the aggressiveness of breast cancer?
Provedor de dados: 56
Autores: Rhana,P.; Trivelato Junior,R.R.; Beirão,P.S.L.; Cruz,J.S.; Rodrigues,A.L.P.
Breast cancer is the most common cancer among women and its metastatic potential is responsible for numerous deaths. Thus, the need to find new targets for improving treatment, and even finding the cure, becomes increasingly greater. Ion channels are known to participate in several physiological functions, such as muscle contraction, cell volume regulation, immune response and cell proliferation. In breast cancer, different types of ion channels have been associated with tumorigenesis. Recently, voltage-gated Na+ channels (VGSC) have been implicated in the processes that lead to increased tumor aggressiveness. To explain this relationship, different theories, associated with pH changes, gene expression and intracellular Ca2+, have been proposed in an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breast cancer; Ion channels; Metastasis; Nav1.5 channel.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700301

Attenuation of renal ischemic reperfusion injury by salvianolic acid B via suppressing oxidative stress and inflammation through PI3K/Akt signaling pathway
Provedor de dados: 56
Autores: Ma,Z.G.; Xia,H.Q.; Cui,S.L.; Yu,J.
Salvianolic acid B (SAB) is one the major phytocomponents of Radix Salvia miltiorrhiza and exhibit numerous health promoting properties. The objective of the current study was to examine whether SAB exerts a renoprotective effect by attenuating oxidative stress and inflammatory response through activating phosphatidylinositol 3-kinase/serine-threonine kinase B (PI3K/Akt) signaling pathway in a renal ischemic reperfusion rat model. Forty Sprague-Dawley male rats (250–300 g) were obtained and split into four groups with ten rats in each group. The right kidney of all rats was removed (nephrectomy). The rats of the Control group received only saline (occlusion) and served as a sham control group, whereas rats subjected to ischemic reperfusion (IR) insult by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Renal ischemic reperfusion; Salvianolic acid B; Oxidative stress; Inflammation; PI3K/Akt pathway.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600607

Tangeretin has anti-asthmatic effects via regulating PI3K and Notch signaling and modulating Th1/Th2/Th17 cytokine balance in neonatal asthmatic mice
Provedor de dados: 56
Autores: Liu,L.-L.; Li,F.-H.; Zhang,Y.; Zhang,X.-F.; Yang,J.
Asthma is a chronic allergic disease characterized by airway inflammation, airway hyper-responsiveness (AHR), and mucus hypersecretion. T-lymphocytes are involved in the pathogenesis of asthma, mediating airway inflammatory reactions by secreting cytokines. The phosphoinositide 3-kinase (PI3K) and Notch signaling pathways are associated with T cell signaling, proliferation, and differentiation, and are important in the progression of asthma. Thus, compounds that can modulate T cell proliferation and function may be of clinical value. Here, we assessed the effects of tangeretin, a plant-derived flavonoid, in experimental asthma. BALB/c mice at postnatal day (P) 12 were challenged with ovalbumin (OVA). Separate groups of mice (n=18/group) were administered...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asthma; Inflammation; Notch signaling; PI3K; Tangeretin; T-helper cells.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800612

Protective effects of fentanyl preconditioning on cardiomyocyte apoptosis induced by ischemia-reperfusion in rats
Provedor de dados: 56
Autores: Xu,Q.; Li,Q.-G.; Fan,G.-R.; Liu,Q.-H.; Mi,F.-L.; Liu,B.
We aimed to study the effect of fentanyl (Fen) preconditioning on cardiomyocyte apoptosis induced by ischemia-reperfusion (I/R) in rats. A total of 120 Sprague Dawley male rats (age: 3 months) were randomly divided into: sham operation group (S group), I/R group, normal saline I/R group (NS group), and fentanyl low, middle, and high dose groups (Fen1: 2 μg/kg; Fen2: 4 μg/kg; Fen3: 6 μg/kg). Heart rate (HR), mean arterial pressure (MAP), left ventricular developed pressure (LVDP), ±dp/dtmax, malondialdehyde (MDA), superoxide dismutase (SOD) activity, creatine phosphokinase-MB (CK-MB), and cardiac troponin-I (cTnI) were measured. Myocardial ischemic (MI) area, total apoptotic myocardial cells, and protein and mRNA expressions of B-cell lymphoma 2 (Bcl-2) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fentanyl; Ischemia-reperfusion; Myocardial apoptosis; Myocardial infarction; Hemodynamic parameters; B-cell lymphoma 2; Bax.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200603

Regulation of semaphorin 4D expression and cell proliferation of ovarian cancer by ERalpha and ERbeta
Provedor de dados: 56
Autores: Liu,Y.; Hou,Y.; Ma,L.; Sun,C.; Pan,J.; Yang,Y.; Zhou,H.; Zhang,J.
Ovarian cancer is one of the most common malignancies in women. Semaphorin 4D (sema 4D) is involved in the progress of multiple cancers. In the presence of estrogen-like ligands, estrogen receptors (ERα and ERβ) participate in the progress of breast and ovarian cancers by transcriptional regulation. The aim of the study was to investigate the role of sema 4D and elucidate the regulatory pattern of ERα and ERβ on sema 4D expression in ovarian cancers. Sema 4D levels were up-regulated in ovarian cancer SKOV-3 cells. Patients with malignant ovarian cancers had significantly higher sema 4D levels than controls, suggesting an oncogene role of sema 4D in ovarian cancer. ERα expressions were up-regulated in SKOV-3 cells compared with normal ovarian IOSE80...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Semaphorin 4D expression; ERα; ERβ; Ovarian cancer; Cell proliferation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300603

Overexpression of ezrin and galectin-3 as predictors of poor prognosis of cervical cancer
Provedor de dados: 56
Autores: Li,M.; Feng,Y.M.; Fang,S.Q.
The aim of this study was to explore the correlation of ezrin and galectin-3 expressions with prognosis in cervical cancer. The immunohistochemical method was applied to detect ezrin and galectin-3 expressions in normal cervix tissues (n=30), cervicitis tissues (n=28), cervical intraepithelial neoplasia (CIN) tissues (classified as I-III, n=89), and cervical carcinoma tissues (n=84). Follow-up was conducted for 5 to 78 months to analyze the correlation of protein expressions with prognosis. Ezrin and galectin-3 expressions in cervical cancer were significantly higher than in normal cervix, cervicitis and CIN (all P&lt;0.05), and expressions in CIN were significantly higher than in normal cervix and cervicitis (both P&lt;0.05). The expressions of ezrin and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ezrin protein; Galectin-3 protein; Cervical cancer; Deep myometrial invasion; Lymph node metastasis; Prognosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400601

Candesartan, rather than losartan, improves motor dysfunction in thioacetamide-induced chronic liver failure in rats
Provedor de dados: 56
Autores: Murad,H.A.; Gazzaz,Z.J.; Ali,S.S.; Ibraheem,M.S.
Minimal hepatic encephalopathy is more common than the acute syndrome. Losartan, the first angiotensin-II receptor blocker (ARB), and candesartan, another widely-used ARB, have protected against developing fibrogenesis, but there is no clear data about their curative antifibrotic effects. The current study was designed to examine their effects in an already-established model of hepatic fibrosis and also their effects on the associated motor dysfunction. Low-grade chronic liver failure (CLF) was induced in 3-month old Sprague-Dawley male rats using thioacetamide (TAA, 50 mg·kg−1·day−1) intraperitoneally for 2 weeks. The TAA-CLF rats were randomly divided into five groups (n=8) treated orally for 14 days (mg·kg−1·day−1) as follows: TAA (distilled water),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Candesartan; Hepatic fibrosis; Liver failure; Losartan; Motor dysfunction; Thioacetamide.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100611

Alemtuzumab as graft-versus-host disease (GVHD) prophylaxis strategy in a developing country: lower rate of acute GVHD, increased risk of cytomegalovirus reactivation
Provedor de dados: 56
Autores: Resende,C.B.; Rezende,B.M.; Bernardes,P.T.T.; Teixeira,G.M.; Teixeira,M.M.; Pinho,V.; Bittencourt,H.
Acute graft-versus-host disease (aGVHD) and cytomegalovirus reactivation are important complications after allogeneic stem cell transplantation (alloHSCT). Here, we evaluated the impact of treatment with alemtuzumab on the occurrence of aGVHD, cytomegalovirus reactivation and survival after alloHSCT. This was a prospective cohort study conducted at the allo-HSCT unit of Hospital das Clínicas, Universidade Federal de Minas Gerais, Brazil, from January 2009 to December 2011. Fifty-seven patients who underwent alloHSCT were included. Forty-five (79%) patients had a malignant disease. Alemtuzumab was administered before the conditioning regimen at a dose of 1 mg/kg in children and 30 mg/day for 2 days in adults or children weighing more than 40 kg (a total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hematopoietic stem cell transplantation; Alemtuzumab; Graft-versus-host disease; Cytomegalovirus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000200705

An ontogenic study of the behavioral effects of chronic intermittent exposure to ayahuasca in mice
Provedor de dados: 56
Autores: Correa-Netto,N.F.; Masukawa,M.Y.; Nishide,F.; Galfano,G.S.; Tamura,F.; Shimizo,M.K.; Marcato,M.P.; Santos Junior,J.G.; Linardi,A.
Ayahuasca is a beverage obtained from decoctions of the Banisteriopsis caapi plus Psychotria viridis. In religious contexts, ayahuasca is used by different age groups. However, little is known of the effects of ayahuasca during ontogenic development, particularly with regard to the functional characteristics of the central nervous system. Animal models are useful for studying the ontogenic effects of ayahuasca because they allow exclusion of the behavioral influence associated with the ritualistic use. We investigated the effects of exposure to ayahuasca (1.5 mL/kg, orally, twice a week) on memory and anxiety in C57BL/6 mice, with the post-natal day (PND) being used as the ontogenic criterion for classification: childhood (PND21 to PND35), adolescence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adolescent Anxiety Banisteriopsis N; N-Dimethyltryptamine Infant Memory.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700603

Presence of t(14;18) translocation in healthy individuals varies according to ethnic background in the Brazilian population
Provedor de dados: 56
Autores: Levy,D.; Bertoldi,E.R.M.; Ruiz,J.L.M.; Pereira,J.; Bydlowski,S.P.
Several groups have demonstrated that healthy individuals can present the t(14;18) translocation. In this report, the presence of the translocation was examined in healthy blood donors in Brazil, a country considered an ethnic melting pot. The translocation was detected by nested PCR in 227 peripheral blood samples from individuals with different ethnic backgrounds. The t(14;18) translocation was found in 45 of 85 White individuals (52.94%); in 57 of 72 Black individuals (79.17%); and in 68 of 70 individuals (97.14%) of Japanese-descent. In conclusion, the frequency of the t(14;18) translocation in the Brazilian population varies according to the ethnic background.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: T(14; 18) Lymphomas Characterization Molecular genetics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700602

Iodine-131 treatment of thyroid cancer cells leads to suppression of cell proliferation followed by induction of cell apoptosis and cell cycle arrest by regulation of B-cell translocation gene 2-mediated JNK/NF-κB pathways
Provedor de dados: 56
Autores: Zhao,L.M.; Pang,A.X.
Iodine-131 (131I) is widely used for the treatment of thyroid-related diseases. This study aimed to investigate the expression of p53 and BTG2 genes following 131I therapy in thyroid cancer cell line SW579 and the possible underlying mechanism. SW579 human thyroid squamous carcinoma cells were cultured and treated with 131I. They were then assessed for 131I uptake, cell viability, apoptosis, cell cycle arrest, p53 expression, and BTG2 gene expression. SW579 cells were transfected with BTG2 siRNA, p53 siRNA and siNC and were then examined for the same aforementioned parameters. When treated with a JNK inhibitor of SP600125 and 131I or with a NF-κB inhibitor of BMS-345541 and 131I, non-transfected SW579 cells were assessed in JNK/NFκB pathways. It was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Iodine-131; P53; BTG2; SW579; Thyroid cancer; JNK/NF-κB pathways.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100608

Inhibitory effect of the Pseudobrickellia brasiliensis (Spreng) R.M. King &amp;amp; H. Rob. aqueous extract on human lymphocyte proliferation and IFN-γ and TNF-α production in vitro
Provedor de dados: 56
Autores: Almeida,V.G.; Avelar-Freitas,B.A.; Santos,M.G.; Costa,L.A.; Silva,T.J.; Pereira,W.F.; Amorim,M.L.L.; Grael,C.F.F.; Gregório,L.E.; Rocha-Vieira,E.; Brito-Melo,G.E.A.
Pseudobrickellia brasiliensis (Asteraceae) is a plant commonly known as arnica-do-campo and belongs to the native flora of the Brazilian Cerrado. The alcoholic extract of the plant has been used as an anti-inflammatory agent in folk medicine, but the biological mechanism of action has not been elucidated. The present study evaluated the composition of P. brasiliensis aqueous extract and its effects on pro-inflammatory cytokine production and lymphocyte proliferation. The extracts were prepared by sequential maceration of P. brasiliensis leaves in ethanol, ethyl acetate, and water. Extract cytotoxicity was evaluated by trypan blue exclusion assay, and apoptosis and necrosis were measured by staining with annexin V-FITC and propidium iodide. The ethanolic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytokines; Lymphocyte proliferation; Luteolin; Medicinal plant; Pseudobrickellia brasiliensis; Quinic acid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000800603

CIRBP protects H9C2 cells against myocardial ischemia through inhibition of NF-κB pathway
Provedor de dados: 56
Autores: Long,T.Y.; Jing,R.; Kuang,F.; Huang,L.; Qian,Z.X.; Yang,T.L.
Myocardial ischemia is a major cause of death and remains a disease with extremely deficient clinical therapies and a major problem worldwide. Cold inducible RNA-binding protein (CIRBP) is reported to be involved in multiple pathological processes, including myocardial ischemia. However, the molecular mechanisms of myocardial ischemia remain elusive. Here, we first overexpressed CIRBP by transfection of pc-CIRBP (pcDNA3.1 containing coding sequenced for CIRBP) and silenced CIRBP by transfection of small interfering RNA targeting CIRBP (siCIRBP). pcDNA3.1 and the negative control of siCIRBP (siNC) were transfected into H9C2 cells to act as controls. We then constructed a cell model of myocardial ischemia through culturing cells in serum-free medium with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myocardial ischemia; CIRBP; NF-κB; Cell proliferation; Cell apoptosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400602

Dipyrone in association with atropine inhibits the effect on gastric emptying induced by hypoglycemia in rats
Provedor de dados: 56
Autores: Collares,E.F.; Vinagre,A.M.; Collares-Buzato,C.B.
Atropine (AT) and dipyrone (Dp) induce a delay of gastric emptying (GE) of liquids in rats by inhibiting muscarinic receptors and activating β2-adrenergic receptors, respectively. The objective of the present study was to determine the effects of pretreatment with AT and Dp, given alone or in combination, on the effect of hypoglycemia in the liquid GE in rats. Male Wistar adult rats (280-310 g) were pretreated intravenously with AT, Dp, AT plus Dp or their vehicle and then treated 30 min later with iv insulin or its vehicle (n=8-10 animals/group). Thirty min after treatment, GE was evaluated by determining, in awake rats, the percent gastric retention (%GR) of a saline meal labeled with phenol red administered by gavage. The results indicated that insulin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypoglycemia; Gastric emptying; Dipyrone; Atropine; Muscarinic receptors; Adrenergic receptors.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000610

[RETRACTED ARTICLE] Characteristics of liver fibrosis with different etiologies using a fully quantitative fibrosis assessment tool
Provedor de dados: 56
Autores: Wu,Q.; Zhao,X.; You,H.
This study aimed to test the diagnostic performance of a fully quantitative fibrosis assessment tool for liver fibrosis in patients with chronic hepatitis B (CHB), primary biliary cirrhosis (PBC) and non-alcoholic steatohepatitis (NASH). A total of 117 patients with liver fibrosis were included in this study, including 50 patients with CHB, 49 patients with PBC and 18 patients with NASH. All patients underwent liver biopsy (LB). Fibrosis stages were assessed by two experienced pathologists. Histopathological images of LB slices were processed by second harmonic generation (SHG)/two-photon excited fluorescence (TPEF) microscopy without staining, a system called qFibrosis (quantitative fibrosis) system. Altogether 101 quantitative features of the SHG/TPEF...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Liver fibrosis; Quantitative assessment; Etiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000600703

Influence of Treg cells and HBV genotype on sustained response and drug resistance in the treatment with nucleoside drugs
Provedor de dados: 56
Autores: Zhang,Y.R.; Li,B.; Wang,C.X.; Zhou,N.; Qi,W.; Li,X.L.; Wu,L.Y.; Wei,S.F.; Zhang,Y.D.
We aimed to investigate the influence of regulatory T cells including CD4+CD25+, CD8+CD28- and hepatitis B virus (HBV) genotype on sustained virological response and tolerance of nucleoside drugs. One hundred and thirty-seven patients were enrolled. Lamivudine was administered to 84 patients. Entecavir was administered to the other 53 patients. Before treatment, biochemical tests, HBV DNA load, HBV serum level, HBV genotype, PB CD3+, CD4+, CD8+, CD4+CD25+/CD3+, and CD8+CD28-/CD3+ frequencies were measured. Based on HBV DNA loads after 4 weeks of therapy, patients were divided into response group and suboptimal response group. The lamivudine group received treatment continuously, and then patients were categorized into non-resistance group and resistance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis B chronic; CD4+CD25+; CD8+CD28-; Regulatory T cells; Viral response; Nucleoside.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300606

Benchmarking pathway interaction network for colorectal cancer to identify dysregulated pathways
Provedor de dados: 56
Autores: Wang,Q.; Shi,C.-J.; Lv,S.-H.
Different pathways act synergistically to participate in many biological processes. Thus, the purpose of our study was to extract dysregulated pathways to investigate the pathogenesis of colorectal cancer (CRC) based on the functional dependency among pathways. Protein-protein interaction (PPI) information and pathway data were retrieved from STRING and Reactome databases, respectively. After genes were aligned to the pathways, each pathway activity was calculated using the principal component analysis (PCA) method, and the seed pathway was discovered. Subsequently, we constructed the pathway interaction network (PIN), where each node represented a biological pathway based on gene expression profile, PPI data, as well as pathways. Dysregulated pathways...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pathway interaction network; Colorectal cancer; Dysregulated pathways; Principal component analysis; Protein-protein interaction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500602

Meta-analysis of the association between PADI4 -92C/G polymorphism and rheumatoid arthritis in the Chinese population
Provedor de dados: 56
Autores: Guo,Z.Y.; Zhang,J.X.; Wu,M.; Mei,Y.F.; Lin,X.J.; Bu,C.; Xie,Y.; Wang,J.
Many studies have evaluated the correlation between peptidylarginine deiminase 4 (PADI4) -92C/G polymorphism and rheumatoid arthritis (RA), but the results remain inconclusive. Therefore, we performed a meta-analysis in the Chinese population to provide comprehensive data on the association between PADI4 -92C/G polymorphism and RA. Eligible studies published before May 2016 were identified in PubMed and Chinese databases. The strengths of these associations were assessed by pooled odds ratios (OR) and 95% confidence interval (CI). Eight studies documenting a total of 1351 RA cases and 1585 controls were included in this meta-analysis. In the overall analysis, a significant association between the PADI4 -92C/G polymorphism and RA was found in the Chinese...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meta-analysis; Peptidylarginine deiminase 4; Polymorphism; Rheumatoid arthritis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000605

Is endobronchial ultrasound-guided transbronchial needle aspiration with a stylet necessary for lymph node screening in lung cancer patients?
Provedor de dados: 56
Autores: Xu,Y.; Lin,J.; Jin,Y.; Wu,X.; Zheng,H.; Feng,J.
During endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA), a needle is commonly used with a stylet, although recently the stylet has been omitted. This prospective study aimed to compare the quality of specimens obtained by EBUS-TBNA performed with and without a stylet. Between November 2013 and November 2014, 131 patients with lung cancer underwent EBUS-TBNA, with a total of 148 mediastinal or hilar lymph nodes sampled both with and without an inner-stylet, yielding 296 cytological specimens. Specimens were scored cytologically using five parameters: background blood or clot, amount of cellular material, degree of cellular degeneration, degree of cellular trauma, and retention of appropriate architecture. The procedure with a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endobronchial ultrasound-guided; Transbronchial needle aspiration; Stylet; Cytology; Pathological diagnosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000606

Survival benefits of interferon-based therapy in patients with recurrent hepatitis C after orthotopic liver transplantation
Provedor de dados: 56
Autores: Zanaga,L.P.; Vigani,A.G.; Angerami,R.N.; Giorgetti,A.; Escanhoela,C.A.F.; Ataíde,E.C.; Boin,I.F.S.F.; Stucchi,R.S.B.
Recurrent hepatitis C after orthotopic liver transplantation (OLT) is universal and can lead to graft failure and, consequently, reduced survival. Hepatitis C treatment can be used to prevent these detrimental outcomes. The aim of this study was to describe rates of hepatitis C recurrence and sustained virological response (SVR) to interferon-based treatment after OLT and its relationship to survival and progression of liver disease through retrospective analysis of medical records of 127 patients who underwent OLT due to cirrhosis or hepatocellular carcinoma secondary to chronic hepatitis C between January 2002 and December 2013. Fifty-six patients were diagnosed with recurrent disease, 42 started interferon-based therapy and 37 completed treatment....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis C; Liver transplantation; Sustained virological response; Recurrent hepatitis C; Transplantation outcomes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100701

Evaluation of the toxicity and hypoglycemic effect of the aqueous extracts of Cnidoscolus quercifolius Pohl
Provedor de dados: 56
Autores: Lira,S.M.; Canabrava,N.V.; Benjamin,S.R.; Silva,J.Y.G.; Viana,D.A.; Lima,C.L.S.; Paredes,P.F.M.; Marques,M.M.M.; Pereira,E.O.; Queiroz,E.A.M.; Guedes,M.I.F.
Diabetes mellitus is one of the most common chronic degenerative diseases, and it is estimated to increase worldwide to around 415 million and to impact 642 million in 2040. Research shows that some plants are sources of bioactive compounds against diabetes. Thus, the objective of this work was to evaluate the oral toxicity and the hypoglycemic effect of the aqueous extract of the leaves of Cnidoscolus quercifolius Pohl. Diabetes was induced in Swiss mice with streptozotocin and the mice were treated with an aqueous extract of C. quercifolius leaves for a period of 30 days. Phytochemical analysis showed that the extract was rich in flavonoids, catechins and triterpenoid, which did not show any mortality and behavioral alterations in mice treated with 200,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Faveleira; Diabetes mellitus; Medicinal plants; Hypoglycemic activity; Aqueous extracts.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000612

Effect of strontium ranelate on pain behavior in an experimental model of osteoarthritis
Provedor de dados: 56
Autores: Rodrigues,T.A.; Sampaio Junior,A.J.B.; Nunes,I.D.P.; Cartágenes,M.S.S.; Garcia,J.B.S.
Strontium ranelate (SrRan) is a drug usually prescribed to treat osteoporosis, with proven effects of decreasing the risk of fractures and an indication of reducing the progression of osteoarthritis (OA). This study aimed to investigate the effects of SrRan as either a prophylactic or a treatment drug, using an OA rat model to assess pain behavior. A monoiodoacetate (MIA)-induced knee joint OA model in Wistar rats was used. Thirty Wistar rats (both sexes, 60 days old) were distributed in five groups of 6 rats each: the control group, that received no intervention; a prophylactic group, that received oral administration of 25 mg·kg-1·day-1 of SrRan for 28 days before induction of OA; a group treated with 25 mg·kg-1·day-1 of SrRan for 28 days after OA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteoarthritis; Strontium ranelate; Pain; Treatment; Prophylaxis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900602

Cerebral blood flow and vasoreactivity in aging: an arterial spin labeling study
Provedor de dados: 56
Autores: Leoni,R.F.; Oliveira,I.A.F.; Pontes-Neto,O.M.; Santos,A.C.; Leite,J.P.
Regional cerebral blood flow (CBF) and cerebrovascular reactivity (CVR) in young and elderly participants were assessed using pulsed arterial spin labeling (ASL) and blood oxygenation level-dependent (BOLD) magnetic resonance imaging (MRI) techniques in combination with inhalation of CO2. Pulsed ASL and BOLD-MRI were acquired in seventeen asymptomatic volunteers (10 young adults, age: 30±7 years; 7 elderly adults, age: 64±8 years) with no history of diabetes, hypertension, and neurological diseases. Data from one elderly participant was excluded due to the incorrigible head motion. Average baseline CBF in gray matter was significantly reduced in elderly (46±9 mL·100 g-1·min-1) compared to young adults (57±8 mL·100 g-1·min-1; P=0.02). Decreased pulsed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arterial spin labeling; Blood oxygenation level-dependent contrast; Cerebral blood flow; Cerebrovascular reactivity; Hypercapnia; Magnetic resonance imaging.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000400701

Pain and distress outcomes in infants and children: a systematic review
Provedor de dados: 56
Autores: Oliveira,N.C.A.C.; Gaspardo,C.M.; Linhares,M.B.M.
The aim of the present study was to systematically review the recent literature about pain and distress outcomes in children and critically analyze the methodological quality of the reports. The systematic review was based on the PRISMA statement and performed by selecting articles that are indexed in scientific databases. The methodological quality of reports was examined using STROBE statement, for observational studies, and CONSORT statement, for randomized controlled trials. The PedIMMPACT consensus was used to evaluate the psychometric quality of pain instruments. We analyzed 23 empirical studies, including 14 randomized controlled trials, seven cross-sectional studies, and two studies with cohort designs. Fourteen studies included preschool- and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Children; Development; Distress; Pain; Review.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700302

Two novel Co(II) complexes with two different Schiff bases: inhibiting growth of human skin cancer cells
Provedor de dados: 56
Autores: Xiao,Y.-J.; Diao,Q.-C.; Liang,Y.-H.; Zeng,K.
Using two flexible Schiff bases, H2L1 and H2L2, two new cobalt II (Co(II))-coordination compounds, namely, Py3CoL1 (1) and Py3CoL2 (2) (Py=pyridine, L1=3,5-ClC6H2(O)C=NC6H3(O)-4-NO2, L2=3,5-BrC6H2(O)C=NC6H3(O)-4-NO2) have been synthesized under solvothermal conditions. Single crystal X-ray structural analysis revealed that compounds 1 and 2 are both six-coordinate in a distorted octahedral geometry, and the 1D chain structure was formed by the π…π and C-H…O interactions or C-H…Cl interaction. The in vitro antitumor activities of 1, 2 and their corresponding organic ligands Py, L1, and L2 were studied and evaluated, in which three human skin cancer cell lines (A-431, HT-144 and SK-MEL-30) were used in the screening tests.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Schiff bases; Coordination compound; Antitumor activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700607

Potential benefit of (-)-epigallocatechin-3-gallate for macrovascular complications in diabetes
Provedor de dados: 56
Autores: Tang,L.; Li,L.; Yang,J.; Zeng,C.
Vascular problems are the most common complications in diabetes. Substantial evidence from epidemiological and pathophysiological studies show that hyperglycemia is a major risk factor for macrovascular complications in patients with diabetes. (-)-Epigallocatechin-3-gallate (EGCG), the major catechin derived from green tea, is known to exert a variety of cardiovascular beneficial effects. The protective effects of EGCG in diabetes are also evident. However, whether EGCG is beneficial against macrovascular complications that occur in diabetes remains unknown. Our previous studies demonstrated that treatment of EGCG inhibits high glucose-induced vascular smooth muscle cell proliferation and suppresses high glucose-mediated vascular inflammation in human...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: (-)-Epigallocatechin-3-gallate; Diabetes; Macrovascular complications; Diabetes complications; Hypothesis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001000401

Performance of urinary kidney injury molecule-1, neutrophil gelatinase-associated lipocalin, and N-acetyl-β-D-glucosaminidase to predict chronic kidney disease progression and adverse outcomes
Provedor de dados: 56
Autores: Lobato,G.R.; Lobato,M.R.; Thomé,F.S.; Veronese,F.V.
Urinary biomarkers can predict the progression of chronic kidney disease (CKD). In this study, kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), and N-acetyl-β-D-glucosaminidase (NAG) were correlated with the stages of CKD, and the association of these biomarkers with CKD progression and adverse outcomes was determined. A total of 250 patients, including 111 on hemodialysis, were studied. Urinary KIM-1, NGAL, and NAG were measured at baseline. Patients not on dialysis at baseline who progressed to a worse CKD stage were compared with those who did not progress. The association of each biomarker and selected covariates with progression to more advanced stages of CKD, end-stage kidney disease, or death was evaluated by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronic kidney disease; Hemodialysis; Biomarkers; Kidney injury molecule-1; Neutrophil gelatinase-associated lipocalin; N-acetyl-β-D-glucosaminidase.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500702

Possible mechanisms involved in the vasorelaxant effect produced by clobenzorex in aortic segments of rats
Provedor de dados: 56
Autores: Lozano-Cuenca,J.; González-Hernández,A.; López-Canales,O.A.; Villagrana-Zesati,J.R.; Rodríguez-Choreão,J.D.; Morín-Zaragoza,R.; Castillo-Henkel,E.F.; López-Canales,J.S.
Clobenzorex is a metabolic precursor of amphetamine indicated for the treatment of obesity. Amphetamines have been involved with cardiovascular side effects such as hypertension and pulmonary arterial hypertension. The aim of the present study was to investigate whether the direct application of 10–9–10–5 M clobenzorex on isolated phenylephrine-precontracted rat aortic rings produces vascular effects, and if so, what mechanisms may be involved. Clobenzorex produced an immediate concentration-dependent vasorelaxant effect at the higher concentrations (10–7.5–10–5 M). The present outcome was not modified by 10–6 M atropine (an antagonist of muscarinic acetylcholine receptors), 3.1×10–7 M glibenclamide (an ATP-sensitive K+ channel blocker), 10–3 M...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clobenzorex; Rat aorta; Vasorelaxation; NO-cGMP; PKG pathway; K+ channels.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900605

Penetration of 0.3% ciprofloxacin, 0.3% ofloxacin, and 0.5% moxifloxacin into the cornea and aqueous humor of enucleated human eyes
Provedor de dados: 56
Autores: Silva,G.C.M.; Jabor,V.A.P.; Bonato,P.S.; Martinez,E.Z.; Faria-e-Sousa,S.J.
We aimed to quantify the penetration of ciprofloxacin, ofloxacin, and moxifloxacin into the cornea and aqueous humor of cadaver eyes. A total of 60 enucleated eyes, not eligible for corneal transplantation, were divided into three groups and immersed in commercial solutions of 0.3% ciprofloxacin, 0.3% ofloxacin, or 0.5% moxifloxacin for 10 min. Whole corneas and samples of aqueous humor were then harvested and frozen, and drug concentrations analyzed by liquid chromatography tandem mass spectrometry. The mean corneal concentration of moxifloxacin was twice as high as ofloxacin, and the latter was twice as high as ciprofloxacin. The mean concentration of moxifloxacin in the aqueous humor was four times higher than the other antibiotics, and the mean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciprofloxacin; Eye banking; Eye drops; Fluoroquinolones; Moxifloxacin; Ofloxacin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000700609

Importance of SERCA2a on early isolated diastolic dysfunction induced by supravalvular aortic stenosis in rats
Provedor de dados: 56
Autores: Silveira,C.F.S.M.P.; Campos,D.H.S.; Freire,P.P.; Deus,A.F.; Okoshi,K.; Padovani,C.R.; Cicogna,A.C.
Cardiac remodeling is defined as changes in shape and function of the heart in response to aggression (pressure overload). The sarcoplasmic reticulum calcium ATPase cardiac isoform 2a (SERCA2a) is a known factor that influences function. A wide spectrum of studies report a decrease in SERCA2a in heart failure, but none evaluate it's the role in early isolated diastolic dysfunction in supravalvular aortic stenosis (AoS). Our hypothesis was that SERCA2a participates in such dysfunction. Thirty-day-old male Wistar rats (60-80 g) were divided into AoS and Sham groups, which were submitted to surgery with or without aorta clipping, respectively. After 6 weeks, the animals were submitted to echocardiogram and functional analysis by isolated papillary muscle...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Papillary muscle; Echocardiogram; Cyclopiazonic acid; Rat; Isolated diastolic dysfunction; SERCA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500605

Local inhibition of nitrergic activity in tenotomized rats accelerates muscle regeneration by increasing fiber area and decreasing central core lesions
Provedor de dados: 56
Autores: Seabra,A.D.; Moraes,S.A.S.; Batista,E.J.O.; Garcia,T.B.; Souza,M.C.; Oliveira,K.R.M.; Herculano,A.M.
Muscular atrophy is a progressive degeneration characterized by muscular proteolysis, loss of mass and decrease in fiber area. Tendon rupture induces muscular atrophy due to an intrinsic functional connection. Local inhibition of nitric oxide synthase (NOS) by Nω-nitro-L-arginine methyl ester (L-NAME) accelerates tendon histological recovery and induces functional improvement. Here we evaluate the effects of such local nitrergic inhibition on the pattern of soleus muscle regeneration after tenotomy. Adult male Wistar rats (240 to 280 g) were divided into four experimental groups: control (n=4), tenotomized (n=6), vehicle (n=6), and L-NAME (n=6). Muscular atrophy was induced by calcaneal tendon rupture in rats. Changes in muscle wet weight and total protein...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitric oxide; Muscle regeneration; Atrophy; Tendon; Tenotomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000300601

Revealing potential long non-coding RNA biomarkers in lung adenocarcinoma using long non-coding RNA-mediated competitive endogenous RNA network
Provedor de dados: 56
Autores: Zhu,T-G.; Xiao,X.; Wei,Q.; Yue,M.; Zhang,L-X.
In our study, we aimed to reveal potential long non-coding RNAs (lncRNA) biomarkers in lung adenocarcinoma (LAD) using lncRNA-mediated competing endogenous RNAs (ceRNAs) network (LMCN). Competing lncRNA-mRNA interactions were identified using the hypergeometric test. Co-expression analysis for the competing lncRNA-mRNA interactions was implemented, and relying on the weight value &gt;0.8, a highly competitive LMCN was further constructed. Degree distribution, betweenness and closeness for LMCN were carried out to analyze the network structure. Functional analyses of mRNAs in LMCN were carried out to further explore the biological functions of lncRNAs. Biclique algorithm was utilized to extract competing modules from the LMCN. Finally, we verified our...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lung adenocarcinoma; Competing endogenous RNA; Long non-coding RNA; Hub; Diagnosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000900606

Evaluation of a selective chromogenic medium for detecting vancomycin-resistant enterococci
Provedor de dados: 58
Autores: Soares,Renata Oliveira; Rossato,Adriana Medianeira; Sambrano,Gustavo Enck; Tolfo,Neidimar Cezar Corrêa; Caierão,Juliana; Paim,Thiago Galvão da Silva; d’Azevedo,Pedro Alves.
ABSTRACT Rapid identification of vancomycin-resistant enterococci (VRE) can assist in choosing the appropriate treatment and preventing VRE spread. The performance of chromIDTM VRE agar was evaluated using 184 clinical isolates of Enterococcus spp. and reference strains. The test had a sensitivity of 95.52% but a low specificity of 30%.
Tipo: Info:eu-repo/semantics/report
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400782

Tripartite symbiosis of Sophora tomentosa, rhizobia and arbuscular mycorhizal fungi
Provedor de dados: 58
Autores: Toma,Maíra Akemi; Carvalho,Teotonio Soares de; Guimarães,Amanda Azarias; Costa,Elaine Martins da; Silva,Jacqueline Savana da; Moreira,Fatima Maria de Souza.
ABSTRACT Sophora tomentosa is a pantropical legume species with potential for recovery of areas degraded by salinization, and for stabilization of sand dunes. However, few studies on this species have been carried out, and none regarding its symbiotic relationship with beneficial soil microorganisms. Therefore, this study aimed to evaluate the diversity of nitrogen-fixing bacteria isolated from nodules of Sophora tomentosa, and to analyze the occurrence of colonization of arbuscular mycorrhizal fungi on the roots of this legume in seafront soil. Thus, seeds, root nodules, and soil from the rhizosphere of Sophora tomentosa were collected. From the soil samples, trap cultures with this species were established to extract spores and to evaluate arbuscular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Legumes; Diversity of rhizobia; Degraded areas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400680

High frequency of hepatitis E virus infection in swine from South Brazil and close similarity to human HEV isolates
Provedor de dados: 58
Autores: Passos-Castilho,Ana Maria; Granato,Celso Francisco Hernandes.
Abstract Hepatitis E virus is responsible for acute and chronic liver infections worldwide. Swine hepatitis E virus has been isolated in Brazil, and a probable zoonotic transmission has been described, although data are still scarce. The aim of this study was to investigate the frequency of hepatitis E virus infection in pigs from a small-scale farm in the rural area of Paraná State, South Brazil. Fecal samples were collected from 170 pigs and screened for hepatitis E virus RNA using a duplex real-time RT-PCR targeting a highly conserved 70 nt long sequence within overlapping parts of ORF2 and ORF3 as well as a 113 nt sequence of ORF2. Positive samples with high viral loads were subjected to direct sequencing and phylogenetic analysis. hepatitis E virus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Genotype 3; Hepatitis E virus; Pigs; Zoonosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200373

Cultivation of Pichia pastoris carrying the scFv anti LDL (-) antibody fragment. Effect of preculture carbon source
Provedor de dados: 58
Autores: Arias,Cesar Andres Diaz; Marques,Daniela de Araujo Viana; Malpiedi,Luciana Pellegrini; Maranhão,Andrea Queiroz; Parra,Dulcineia Abdalla Saes; Converti,Attilio; Pessoa Junior,Adalberto.
Abstract Antibodies and antibody fragments are nowadays among the most important biotechnological products, and Pichia pastoris is one of the most important vectors to produce them as well as other recombinant proteins. The conditions to effectively cultivate a P. pastoris strain previously genetically modified to produce the single-chain variable fragment anti low density lipoprotein (-) under the control of the alcohol oxidase promoter have been investigated in this study. In particular, it was evaluated if, and eventually how, the carbon source (glucose or glycerol) used in the preculture preceding cryopreservation in 20% glycerol influences both cell and antibody fragment productions either in flasks or in bioreactor. Although in flasks the volumetric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pichia pastoris; ScFv antibody fragment; Cryopreservation; Expression; Carbon source.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300419

Genome sequencing of four strains of Phylotype I, II and IV of Ralstonia solanacearum that cause potato bacterial wilt in India
Provedor de dados: 58
Autores: Patil,Virupaksh U.; Girimalla,Vanishree; Sagar,Vinay; Chauhan,Rajinder Singh; Chakrabarti,Swarup Kumar.
Abstract Ralstonia solanacearum is a heterogeneous species complex causing bacterial wilts in more than 450 plant species distributed in 54 families. The complexity of the genome and the wide diversity existing within the species has led to the concept of R. solanacearum species complex (RsSC). Here we report the genome sequence of the four strains (RS2, RS25, RS48 and RS75) belonging to three of the four phylotypes of R. solanacearum that cause potato bacterial wilt in India. The genome sequence data would be a valuable resource for the evolutionary, epidemiological studies and quarantine of this phytopathogen.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Potato wilt; Ralstonia; Species Complex; Phylotype; Bipartite; Genome.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200193

Biofilm production and beta-lactamic resistance in Brazilian Staphylococcus aureus isolates from bovine mastitis
Provedor de dados: 58
Autores: Marques,Viviane Figueira; Motta,Cássia Couto da; Soares,Bianca da Silva; Melo,Dayanne Araújo de; Coelho,Shana de Mattos de Oliveira; Coelho,Irene da Silva; Barbosa,Helene Santos; Souza,Miliane Moreira Soares de.
Abstract Staphylococcus spp. play an important role in the etiology of bovine mastitis. Staphylococcus aureus is considered the most relevant species due to the production of virulence factors such as slime, which is required for biofilm formation. This study aimed to evaluate biofilm production and its possible relation to beta-lactamic resistance in 20 S. aureus isolates from bovine mastitic milk. The isolates were characterized by pheno-genotypic and MALDI TOF-MS assays and tested for genes such as icaA, icaD, bap, agr RNAIII, agr I, agr II, agr III, and agr IV, which are related to slime production and its regulation. Biofilm production in microplates was evaluated considering the intervals determined along the bacterial growth curve. In addition, to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilm; Agr types; Antimicrobial resistance; Mastitis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100118

Inhibitor tolerance of a recombinant flocculating industrial Saccharomyces cerevisiae strain during glucose and xylose co-fermentation
Provedor de dados: 58
Autores: Li,Yun-Cheng; Gou,Zi-Xi; Zhang,Ying; Xia,Zi-Yuan; Tang,Yue-Qin; Kida,Kenji.
ABSTRACT Lignocellulose-derived inhibitors have negative effects on the ethanol fermentation capacity of Saccharomyces cerevisiae. In this study, the effects of eight typical inhibitors, including weak acids, furans, and phenols, on glucose and xylose co-fermentation of the recombinant xylose-fermenting flocculating industrial S. cerevisiae strain NAPX37 were evaluated by batch fermentation. Inhibition on glucose fermentation, not that on xylose fermentation, correlated with delayed cell growth. The weak acids and the phenols showed additive effects. The effect of inhibitors on glucose fermentation was as follows (from strongest to weakest): vanillin &gt; phenol &gt; syringaldehyde &gt; 5-HMF &gt; furfural &gt; levulinic acid &gt; acetic acid &gt; formic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Industrial Saccharomyces cerevisiae; Bioethanol; Glucose and xylose co-fermentation; Inhibitor tolerance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400791

Efficient production of pullulan by Aureobasidium pullulans grown on mixtures of potato starch hydrolysate and sucrose
Provedor de dados: 58
Autores: An,Chao; Ma,Sai-jian; Chang,Fan; Xue,Wen-jiao.
Abstract Pullulan is a natural exopolysaccharide with many useful characteristics. However, pullulan is more costly than other exopolysaccharides, which limits its effective application. The purpose of this study was to adopt a novel mixed-sugar strategy for maximizing pullulan production, mainly using potato starch hydrolysate as a low-cost substrate for liquid-state fermentation by Aureobasidium pullulans. Based on fermentation kinetics evaluation of pullulan production by A. pullulans 201253, the pullulan production rate of A. pullulans with mixtures of potato starch hydrolysate and sucrose (potato starch hydrolysate:sucrose = 80:20) was 0.212 h−1, which was significantly higher than those of potato starch hydrolysate alone (0.146 h−1) and mixtures of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mixed sugar; Aureobasidium pullulans; Pullulan; Potato starch hydrolysate; Batch kinetics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100180

Identification of co-infection by rotavirus and parvovirus in dogs with gastroenteritis in Mexico
Provedor de dados: 58
Autores: Ortega,Ariadna Flores; Martínez-Castañeda,José Simón; Bautista-Gómez,Linda G.; Muñoz,Raúl Fajardo; Hernández,Israel Quijano.
ABSTRACT This is the first report on circulating canine rotavirus in Mexico. Fifty samples from dogs with gastroenteritis were analyzed used polymerase chain reaction and reverse transcription polymerase chain reaction in order to identify parvovirus and rotavirus, respectively; 7% of dogs were infected with rotavirus exclusively, while 14% were co-infected with both rotavirus and parvovirus; clinical signs in co-infected dogs were more severe.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Mexico; Parvovirus; Rotavirus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400769

Bacterial selection for biological control of plant disease: criterion determination and validation
Provedor de dados: 58
Autores: Mota,Monalize Salete; Gomes,Cesar Bauer; Souza Júnior,Ismail Teodoro; Moura,Andréa Bittencourt.
Abstract This study aimed to evaluate the biocontrol potential of bacteria isolated from different plant species and soils. The production of compounds related to phytopathogen biocontrol and/or promotion of plant growth in bacterial isolates was evaluated by measuring the production of antimicrobial compounds (ammonia and antibiosis) and hydrolytic enzymes (amylases, lipases, proteases, and chitinases) and phosphate solubilization. Of the 1219 bacterial isolates, 92% produced one or more of the eight compounds evaluated, but only 1% of the isolates produced all the compounds. Proteolytic activity was most frequently observed among the bacterial isolates. Among the compounds which often determine the success of biocontrol, 43% produced compounds which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizobacteria; Antibiosis; Mesocriconema xenoplax; Obligate parasites; Perennial plants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100062

A plate method for rapid screening of Ketogulonicigenium vulgare mutants for enhanced 2-keto-l-gulonic acid production
Provedor de dados: 58
Autores: Yang,Weichao; Han,Litao; Mandlaa,Mandlaa; Zhang,Haihong; Zhang,Zhongze; Xu,Hui.
Abstract A new plate method was developed for rapid screening of Ketogulonicigenium vulgare mutants overproducing 2-keto-l-gulonic acid (2-KLG). The screening methodology took the advantage of the acidity caused by 2-KLG, which changes the color of bromothymol blue (pH indicator) from blue to yellow. Using the proposed method, a mutant, K. vulgare 65, was selected from 20,000 colonies produced by a strain subjected to spaceflight mutagenesis. When co-cultured with Bacillus megaterium 2980 in 20-L fermenters, K. vulgare 65 showed a high conversion rate (94.45%) of l-sorbose to 2-KLG. In contrast to the traditional screening method, this one significantly improved the frequency of obtaining positive mutants. The proposed plate screening method is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ketogulonicigenium vulgare; PH indicator; Rapid screening; Spaceflight mutation; 2-Keto-l-gulonic acid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300397

Combination of commercially available molecular assays and culture based methods in diagnosis of tuberculosis and drug resistant tuberculosis
Provedor de dados: 58
Autores: Gkaravela,Lamprini; Papadimitriou-Olivgeris,Matthaios; Foka,Antigoni; Kolonitsiou,Fevronia; Spiliopoulou,Anastasia; Charokopos,Nikolaos; Voulgaridis,Apostolos; Tsiamita,Maria; Marangos,Markos; Anastassiou,Evangelos D.; Spiliopoulou,Iris.
ABSTRACT Early diagnosis of tuberculosis is of major clinical importance. Among 4733 clinical specimens collected from 3363 patients and subjected to Ziehl-Neelsen microscopy, 4109 were inoculated onto Löwenstein-Jensen slants and 3139 in Bactec/9000MB. Polymerase Chain Reaction (PCR) was performed in 3139 specimens, whereas, a genotypic assay was directly applied in 93 Mycobacterium tuberculosis complex PCR-positive for isoniazid and rifampicin resistance detection specimens (GenoType MTBDRplus). Recovered M. tuberculosis isolates (64) as well as, 21 more sent from Regional Hospitals were tested for antimycobacterial resistance with a phenotypic (manual MGIT-SIRE) and a genotypic assay (GenoType MTBDRplus). PCR in the clinical specimens showed excellent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis; PCR; GenoType MTBDRplus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400785

Collagenolytic enzymes produced by fungi: a systematic review
Provedor de dados: 58
Autores: Wanderley,Maria Carolina de Albuquerque; Duarte Neto,José Manoel Wanderley; Lima Filho,José Luiz de; Lima,Carolina de Albuquerque; Teixeira,José António Couto; Porto,Ana Lúcia Figueiredo.
Abstract Specific proteases capable of degrading native triple helical or denatured collagen have been required for many years and have a large spectrum of applications. There are few complete reports that fully uncover production, characterization and purification of fungi collagenases. In this review, authors searched through four scientific on line data bases using the following keywords (collagenolytic OR collagenase) AND (fungi OR fungus OR fungal) AND (production OR synthesis OR synthesize) AND (characterization). Scientific criteria were adopted in this review to classify found articles by score (from 0 to 10). After exclusion criteria, 21 articles were selected. None obtained the maximum of 10 points defined by the methodology, which indicates a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Collagenase; Fungus; Characterization; Purification; Production.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100013

Optimizing culture conditions for production of intra and extracellular inulinase and invertase from Aspergillus niger ATCC 20611 by response surface methodology (RSM)
Provedor de dados: 58
Autores: Dinarvand,Mojdeh; Rezaee,Malahat; Foroughi,Majid.
Abstract The aim of this study was obtain a model that maximizes growth and production of inulinase and invertase by Aspergillus niger ATCC 20611, employing response surface methodology (RSM). The RSM with a five-variable and three-level central composite design (CCD) was employed to optimize the medium composition. Results showed that the experimental data could be appropriately fitted into a second-order polynomial model with a coefficient of determination (R2) more than 0.90 for all responses. This model adequately explained the data variation and represented the actual relationships between the parameters and responses. The pH and temperature value of the cultivation medium were the most significant variables and the effects of inoculum size and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intra-extracellular inulinase production; Intra-extracellular invertase production; Aspergillus niger; Optimization; Response surface method (RSM).
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300427

Short interfering RNAs targeting a vampire-bat related rabies virus phosphoprotein mRNA
Provedor de dados: 58
Autores: Ono,Ekaterina Alexandrovna Durymanova; Taniwaki,Sueli Akemi; Brandão,Paulo.
Abstract The aim of this study was to assess the in vitro and in vivo effects of short-interfering RNAs (siRNAs) against rabies virus phosphoprotein (P) mRNA in a post-infection treatment for rabies as an extension of a previous report (Braz J Microbiol. 2013 Nov 15;44(3):879-82). To this end, rabies virus strain RABV-4005 (related to the Desmodus rotundus vampire bat) were used to inoculate BHK-21 cells and mice, and the transfection with each of the siRNAs was made with Lipofectamine-2000™. In vitro results showed that siRNA 360 was able to inhibit the replication of strain RABV-4005 with a 1 log decrease in virus titter and 5.16-fold reduction in P mRNA, 24 h post-inoculation when compared to non-treated cells. In vivo, siRNA 360 was able to induce...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rabies; Treatment; RNA interference.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300566

Promotion of iron nutrition and growth on peanut by Paenibacillus illinoisensis and Bacillus sp. strains in calcareous soil
Provedor de dados: 58
Autores: Liu,Di; Yang,Qianqian; Ge,Ke; Hu,Xiuna; Qi,Guozhen; Du,Binghai; Liu,Kai; Ding,Yanqin.
ABSTRACT This study aimed to explore the effects of two siderophore-producing bacterial strains on iron absorption and plant growth of peanut in calcareous soil. Two siderophore-producing bacterial strains, namely, YZ29 and DZ13, isolated from the rhizosphere soil of peanut, were identified as Paenibacillus illinoisensis and Bacillus sp., respectively. In potted experiments, YZ29 and DZ13 enhanced root activity, chlorophyll and active iron content in leaves, total nitrogen, phosphorus and potassium accumulation of plants and increased the quality of peanut kernels and plant biomass over control. In the field trial, the inoculated treatments performed better than the controls, and the pod yields of the three treatments inoculated with YZ29, DZ13, and YZ29 +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth-promoting rhizobacteria; Peanut; Paenibacillus illinoisensis; Siderophores; Iron.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400656

Helicobacter pylori with East Asian-type cagPAI genes is more virulent than strains with Western-type in some cagPAI genes
Provedor de dados: 58
Autores: Yuan,Xiao-yan; Yan,Jin-Jun; Yang,Ya-chao; Wu,Chun-mei; Hu,Yan; Geng,Jian-li.
Abstract The severity of Helicobacter pylori-related disease is correlated with the presence and integrity of a cag pathogenicity island (cagPAI). cagPAI genotype may have a modifying effect on the pathogenic potential of the infecting strain. After analyzing the sequences of cagPAI genes, some strains with the East Asian-type cagPAI genes were selected for further analysis to examine the association between the diversity of the cagPAI genes and the virulence of H. pylori. The results showed that gastric mucosal inflammatory cell infiltration was significantly higher in patients with East Asian-type cagPAI genes H. pylori strain compared with mosaicism cagPAI genes H. pylori strain (p &lt; 0.05). H. pylori strains with the East Asian-type cagPAI genes were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helicobacter pylori; CagPAI; Virulence; IL-8.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200218

Production of docosahexaenoic acid by Aurantiochytrium sp. ATCC PRA-276
Provedor de dados: 58
Autores: Furlan,Valcenir Júnior Mendes; Maus,Victor; Batista,Irineu; Bandarra,Narcisa Maria.
Abstract The high costs and environmental concerns associated with using marine resources as sources of oils rich in polyunsaturated fatty acids have prompted searches for alternative sources of such oils. Some microorganisms, among them members of the genus Aurantiochytrium, can synthesize large amounts of these biocompounds. However, various parameters that affect the polyunsaturated fatty acids production of these organisms, such as the carbon and nitrogen sources supplied during their cultivation, require further elucidation. The objective of this investigation was to study the effect of different concentrations of carbon and total nitrogen on the production of polyunsaturated fatty acids, particularly docosahexaenoic acid, by Aurantiochytrium sp. ATCC...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon source; Docosahexaenoic acid; Nitrogen source; Polyunsaturated fatty acids; Thraustochytrids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200359

Brazilian borreliosis with special emphasis on humans and horses
Provedor de dados: 58
Autores: Basile,Roberta Carvalho; Yoshinari,Natalino Hajime; Mantovani,Elenice; Bonoldi,Virgínia Nazário; Macoris,Delphim da Graça; Queiroz-Neto,Antonio de.
Abstract Borreliosis caused by Borrelia burgdorferi sensu lato is a cosmopolitan zoonosis studied worldwide; it is called Lyme disease in many countries of the Northern Hemisphere and Lyme-like or Baggio-Yoshinari Syndrome in Brazil. However, despite the increasing number of suspect cases, this disease is still neglected in Brazil by the medical and veterinary communities. Brazilian Lyme-like borreliosis likely involves capybaras as reservoirs and Amblyomma and Rhipicephalus ticks as vectors. Thus, domestic animals can serve as key carriers in pathogen dissemination. This zoonosis has been little studied in horses in Brazil. The first survey was performed in the state of Rio de Janeiro, and this Brazilian Borreliosis exhibits many differences from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Borrelia burgdorferi; Zoonosis; Ticks; Equine; Baggio-Yoshinari Syndrome.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100167

Carbapenem-resistant Pseudomonas aeruginosa: association with virulence genes and biofilm formation
Provedor de dados: 58
Autores: Gonçalves,Iara Rossi; Dantas,Raquel Cristina Cavalcanti; Ferreira,Melina Lorraine; Batistão,Deivid William da Fonseca; Gontijo-Filho,Paulo Pinto; Ribas,Rosineide Marques.
Abstract Pseudomonas aeruginosa is an opportunistic pathogen that causes frequently nosocomial infections, currently becoming more difficult to treat due to the various resistance mechanisms and different virulence factors. The purpose of this study was to determine the risk factors independently associated with the development of bacteremia by carbapenem-resistant P. aeruginosa, the frequency of virulence genes in metallo-β-lactamases producers and to evaluate their ability to produce biofilm. We conducted a case–control study in the Uberlândia Federal University – Hospital Clinic, Brazil. Polymerase Chain Reaction was performed for metallo-β-lactamases and virulence genes. Adhesion and biofilm assays were done by quantitative tests. Among the 157 strains...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas aeruginosa; Resistance; Metallo-β-lactamases; Virulence; Biofilm.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200211

Survey of pathogens in threatened wild red-tailed Amazon parrot (Amazona brasiliensis) nestlings in Rasa Island, Brazil
Provedor de dados: 58
Autores: Vaz,Frederico Fontanelli; Serafini,Patrícia Pereira; Locatelli-Dittrich,Rosangela; Meurer,Rafael; Durigon,Edison Luiz; Araújo,Jansen de; Thomazelli,Luciano Matsumiya; Ometto,Tatiana; Sipinski,Elenise Angelotti Bastos; Sezerban,Rafael Meirelles; Abbud,Maria Cecília; Raso,Tânia Freitas.
ABSTRACT The red-tailed Amazon parrot (Amazona brasiliensis) is a threatened species of psittacine bird that inhabit coastal regions of Brazil. In view of the threat of this species, the aim of this study was to perform a health evaluation in wild nestlings in Rasa Island, determining the prevalence of enterobacteria and infectious agents according to type of nest. Blood samples were collected from 64 birds and evaluated for antibodies of Chlamydia psittaci by commercial dot-blot ELISA. Cloacal and oropharyngeal swabs samples were collected from 23 birds from artificial wooden nests, 15 birds from PVC nests and 2 birds from natural nests for microbiological analysis. Swab samples were collected from 58 parrots for C. psittaci detection by PCR and from 50...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian influenza virus; Chlamydia psittaci; Microbiology; Newcastle disease; West Nile virus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400747

Draft genome sequence of sulfur-reducing archaeon Thermococcus thioreducens DSM 14981T
Provedor de dados: 58
Autores: Hong,Sung-Jun; Park,Chang Eon; Park,Gun-Seok; Kim,Min-Chul; Jung,Byung Kwon; Shin,Jae-Ho.
Abstract Thermococcus thioreducens DSM 14981T, a sulfur-reducing archaeon, was isolated from the rainbow hydrothermal vent site on the Mid-Atlantic Ridge. Herein, we report the draft genome sequence of T. thioreducens DSM 14981T; we obtained 41 contigs with a genome size of 2,052,483 bp and G + C content of 53.5%. This genome sequence will not only help understand how the archaeon adapts to the deep-sea hydrothermal environment but also aid the development of enzymes that are highly stable under extreme conditions for industrial applications.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Archaea; Hyperthermophile; Thermococcus thioreducens.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100003

Draft genome of a South African strain of Pectobacterium carotovorum subsp. brasiliense
Provedor de dados: 58
Autores: Ntushelo,Khayalethu; Mafofo,Joseph.
Abstract The draft genome of Pectobacterium carotovorum subsp. brasiliense (Pcb) which causes blackleg of potato was submitted to the NCBI and released with reference number NZ_LGRF00000000.1. The estimated genome size based on the draft genome assembly is 4,820,279 bp from 33 contigs ranging in length from 444 to 1,660,019 nucleotides. The genome annotation showed 4250 putative genes, 4114 CDS and 43 pseudo-genes. Three complete rRNA gene species were detected: nine 5S, one 16S and one 23S. Other partial rRNA gene fragments were also identified, nine 16S rRNA and three 23S rRNA. A total of 69 tRNA genes and one ncRNA gene were also annotated in this genome.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pectobacterium carotovorum subsp. brasiliensis; Genome sequencing; Illumina.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100011

Contribution of flagella and motility to gut colonisation and pathogenicity of Salmonella Enteritidis in the chicken
Provedor de dados: 58
Autores: Barbosa,Fernanda de Oliveira; Freitas Neto,Oliveiro Caetano de; Batista,Diego Felipe Alves; Almeida,Adriana Maria de; Rubio,Marcela da Silva; Alves,Lucas Bocchini Rodrigues; Vasconcelos,Rosemeire de Oliveira; Barrow,Paul Andrew; Berchieri Junior,Angelo.
ABSTRACT Salmonella Enteritidis causes fowl paratyphoid in poultry and is frequently associated to outbreaks of food-borne diseases in humans. The role of flagella and flagella-mediated motility into host-pathogen interplay is not fully understood and requires further investigation. In this study, one-day-old chickens were challenged orally with a wild-type strain Salmonella Enteritidis, a non-motile but fully flagellated (SE ΔmotB) or non-flagellated (SE ΔfliC) strain to evaluate their ability to colonise the intestine and spread systemically and also of eliciting gross and histopathological changes. SE ΔmotB and SE ΔfliC were recovered in significantly lower numbers from caecal contents in comparison with Salmonella Enteritidis at early stages of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mutation; Flagellum; Virulence factors; Poultry; Gut colonisation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400754

Heterologous expression of a rice metallothionein isoform (OsMTI-1b) in Saccharomyces cerevisiae enhances cadmium, hydrogen peroxide and ethanol tolerance
Provedor de dados: 58
Autores: Ansarypour,Zahra; Shahpiri,Azar.
Abstract Metallothioneins are a superfamily of low-molecular-weight, cysteine (Cys)-rich proteins that are believed to play important roles in protection against metal toxicity and oxidative stress. The main purpose of this study was to investigate the effect of heterologous expression of a rice metallothionein isoform (OsMTI-1b) on the tolerance of Saccharomyces cerevisiae to Cd2+, H2O2 and ethanol stress. The gene encoding OsMTI-1b was cloned into p426GPD as a yeast expression vector. The new construct was transformed to competent cells of S. cerevisiae. After verification of heterologous expression of OsMTI-1b, the new strain and control were grown under stress conditions. In comparison to control strain, the transformed S. cerevisiae cells expressing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cadmium; Ethanol; Hydrogen peroxide; Rice metallothionein; S. cerevisiae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300537

Modified Carba NP test for the detection of carbapenemase production in gram-negative rods: optimized handling of multiple samples
Provedor de dados: 58
Autores: Campana,Eloiza H.; Chuster,Stephanie G.; Silva,Isadora R. da; Paschoal,Raphael P.; Bonelli,Raquel R.; Moreira,Beatriz M.; Picão,Renata C.
Abstract The modified Carba NP test presented here may be a valuable tool for laboratories interested in investigating a large number of carbapenemase-producing bacteria in a less-costly way. The test was evaluated against 48 carbapenemase-producing and carbapenemase-non-producing gram-negative bacteria. No false–positive results were obtained, but false-negative results were observed with OXA-23- and GES-carbapenemase-producing isolates. Aeromonas sp. are not testable by Modified Carba NP.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbapenemases; Diagnostics; Gram-negative bacteria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200242

Characterization of Vibrio cholerae isolates from 1976 to 2013 in Shandong Province, China
Provedor de dados: 58
Autores: Lü,Hui; Yuan,Yuqi; Sun,Na; Bi,Zhenwang; Guan,Bing; Shao,Kun; Wang,Tongzhan; Bi,Zhenqiang.
Abstract Cholera continues to be a serious public health issue in developing countries. We analyzed the epidemiological data of cholera from 1976 to 2013 in Shandong Province, an eastern coastal area of China. A total of 250 Vibrio cholerae isolates were selected for PCR analysis of virulence genes and pulsed-field gel electrophoresis (PFGE). The analysis of the virulence genes showed that the positive rates for tcpA and tcpI were the highest among strains from the southwest region, which had the highest incidence rate of cholera. Low positive rates for tcpA, tcpI and ctxAB among isolates from after 2000 may be an influencing factor contributing to the contemporary decline in cholera incidence rates. Spatiotemporal serotype shifts (Ogawa, Inaba, Ogawa,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vibrio cholerae; Epidemiology; PFGE; Virulence genes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100173

Genome sequence of Prevotella intermedia SUNY aB G8-9K-3, a biofilm forming strain with drug-resistance
Provedor de dados: 58
Autores: Moon,Ji-Hoi; Kim,Minjung; Lee,Jae-Hyung.
Abstract Prevotella intermedia has long been known to be as the principal etiologic agent of periodontal diseases and associated with various systemic diseases. Previous studies showed that the intra-species difference exists in capacity of biofilm formation, antibiotic resistance, and serological reaction among P. intermedia strains. Here we report the genome sequence of P. intermedia SUNY aB G8-9K-3 (designated ATCC49046) that displays a relatively high antimicrobial resistant and biofilm-forming capacity. Genome sequencing information provides important clues in understanding the genetic bases of phenotypic differences among P. intermedia strains.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prevotella intermedia; Antimicrobial resistant; Biofilm-forming capacity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100005

Growth, viability and architecture of biofilms of Listeria monocytogenes formed on abiotic surfaces
Provedor de dados: 58
Autores: Reis-Teixeira,Fernanda Barbosa dos; Alves,Virgínia Farias; Martinis,Elaine Cristina Pereira de.
Abstract The pathogenic bacterium Listeria monocytogenes can persist in food processing plants for many years, even when appropriate hygienic measures are in place, with potential for contaminating ready-to-eat products and, its ability to form biofilms on abiotic surfaces certainly contributes for the environmental persistence. In this research, L. monocytogenes was grown in biofilms up 8 days attached to stainless steel and glass surfaces, contributing for advancing the knowledge on architecture of mature biofilms, since many literature studies carried out on this topic considered only early stages of cell adhesion. In this study, biofilm populations of two strains of L. monocytogenes (serotypes 1/2a and 4b) on stainless steel coupons and glass were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Listeria monocytogenes; Abiotic surfaces; Persistence; Biofilms.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300587

Infection by Mycobacterium bovis in a dog from Brazil
Provedor de dados: 58
Autores: Rocha,Vivianne Cambuí Figueiredo; Figueiredo,Salomão Cambuí de; Rosales,Cesar Alejandro Rodriguez; Porto,Camila Dias; Sequeira,Julio Lopes; Ferreira Neto,José Soares; Paes,Antônio Carlos; Salgado,Vanessa Riesz.
Abstract Tuberculosis (TB) is a chronic disease caused by bacteria belonging to the Mycobacterium tuberculosis complex (MtbC). This disease rarely affects dogs. Canine infections are usually caused by M. tuberculosis. Mycobacterium bovis infections are rare in dogs and associated with consumption of raw milk or contaminated products. Here, we report a Boxer dog who had a M. bovis infection and was admitted to a Brazilian veterinary hospital with a presumptive diagnosis of chronic ehrlichiosis. Despite receiving treatment for chronic ehrlichiosis, it progressed to death. TB was diagnosed during post-mortem examinations using histopathological analysis. Ziehl-Neelsen staining revealed acid-fast bacilli in the kidneys, liver, mesentery, and a mass adhered to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Dog; Mycobacterium bovis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100109

Goat umbilical cord cells are permissive to small ruminant lentivirus infection in vitro
Provedor de dados: 58
Autores: Martins,Gabrielle R.; Marinho,Rebeca C.; Bezerra Junior,Rosivaldo Q.; Alves,Antoniel de O.; Câmara,Lilia M.C.; Albuquerque-Pinto,Luiz C.; Teixeira,Maria F. da S.
Abstract Small ruminant lentiviruses isolated from peripheral blood leukocytes and target organs can be propagated in vitro in fibroblasts derived from goat synovial membrane cells. These cells are obtained from tissues collected from embryos or fetuses and are necessary for the establishment of the fibroblast primary culture. A new alternative type of host cells, derived from goat umbilical cord, was isolated and characterized phenotypically with its main purpose being to obtain cell monolayers that could be used for the diagnosis and isolation of small ruminant lentiviruses in cell culture. To accomplish this goal, cells were isolated from umbilical cords; characterized phenotypically by flow cytometry analysis; differentiate into osteogenic,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CAEV; MVV; Cell culture; MSC; Flow cytometry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100125

Changes in the microbial community during bioremediation of gasoline-contaminated soil
Provedor de dados: 58
Autores: Leal,Aline Jaime; Rodrigues,Edmo Montes; Leal,Patrícia Lopes; Júlio,Aline Daniela Lopes; Fernandes,Rita de Cássia Rocha; Borges,Arnaldo Chaer; Tótola,Marcos Rogério.
Abstract We aimed to verify the changes in the microbial community during bioremediation of gasoline-contaminated soil. Microbial inoculants were produced from successive additions of gasoline to municipal solid waste compost (MSWC) previously fertilized with nitrogen-phosphorous. To obtain Inoculant A, fertilized MSWC was amended with gasoline every 3 days during 18 days. Inoculant B received the same application, but at every 6 days. Inoculant C included MSWC fertilized with N–P, but no gasoline. The inoculants were applied to gasoline-contaminated soil at 10, 30, or 50 g/kg. Mineralization of gasoline hydrocarbons in soil was evaluated by respirometric analysis. The viability of the inoculants was evaluated after 103 days of storage under refrigeration...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioremediation; Gasoline degradation; Soil contamination; Microbial inoculants; Inoculant storage.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200342

In vitro antifungal activity of organic compounds derived from amino alcohols against onychomycosis
Provedor de dados: 58
Autores: Caneschi,César Augusto; Almeida,Angelina Maria de; Martins,Francislene Juliana; Hyaric,Mireille Le; Oliveira,Manoel Marques Evangelista; Macedo,Gilson Costa; Almeida,Mauro Vieira de; Raposo,Nádia Rezende Barbosa.
Abstract Onychomycosis is a fungal infection of the nail caused by high densities of filamentous fungi and yeasts. Treatment for this illness is long-term, and recurrences are frequently detected. This study evaluated in vitro antifungal activities of 12 organic compounds derived from amino alcohols against standard fungal strains, such as Trichophyton rubrum CCT 5507 URM 1666, Trichophyton mentagrophytes ATCC 11481, and Candida albicans ATCC 10231. The antifungal compounds were synthesized from p-hydroxybenzaldehyde (4a-4f) and p-hydroxybenzoic acid (9a-9f). Minimum inhibitory concentrations and minimum fungicidal concentrations were determined according to Clinical and Laboratory Standards Institute protocols M38-A2, M27-A3, and M27-S4. The amine series...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino alcohols; Amides; Lipophilicity; Antifungal activity; Onychomycosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300476

The Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry (MALDI-TOF MS) identification versus biochemical tests: a study with enterobacteria from a dairy cattle environment
Provedor de dados: 58
Autores: Rodrigues,Naiara Miranda Bento; Bronzato,Greiciane França; Santiago,Gabrielli Stefaninni; Botelho,Larissa Alvarenga Batista; Moreira,Beatriz Meurer; Coelho,Irene da Silva; Souza,Miliane Moreira Soares de; Coelho,Shana de Mattos de Oliveira.
Abstract Mastitis adversely affects milk production and in general cows do not regain their full production levels post recovery, leading to considerable economic losses. Moreover the percentage decrease in milk production depends on the specific pathogen that caused the infection and enterobacteria are responsible for this greater reduction. Phenotypic tests are among the currently available methods used worldwide to identify enterobacteria; however they tend to misdiagnose the species despite the multiple tests carried out. On the other hand The Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry (MALDI-TOF MS) technique has been attracting attention for its precise identification of several microorganisms at species level. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine mastitis; Enterobacteria identification; Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100132

Use of green fluorescent protein labeled non-tuberculous mycobacteria to evaluate the activity quaternary ammonium compound disinfectants and antibiotics
Provedor de dados: 58
Autores: Cortesia,Claudia; Bello,Teresita; Lopez,Gustavo; Franzblau,Scott; Waard,Jacobus de; Takiff,Howard.
Abstract Although infections with NonTuberculous Mycobacteria have become less common in AIDS patients, they are important opportunistic infections after surgical procedures, likely because they are ubiquitous and not efficiently killed by many commonly used disinfectants. In Venezuela there have recently been many non-tuberculous mycobacteria soft tissue infections after minor surgical procedures, some apparently related to the use of a commercial disinfectant based on a Quaternary Ammonium Compound. We studied the activity of this and other quaternary ammonium compounds on different non-tuberculous mycobacteria by transforming the mycobacteria with a dnaA-gfp fusion and then monitoring fluorescence to gauge the capacity of different quaternary ammonium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quaternary Ammonium Compounds (QACs); Disinfectants; NonTuberculous Mycobacteria (NTM); Resistance; Post-surgical infections.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100151

Production of recombinant human epidermal growth factor in Pichia pastoris
Provedor de dados: 58
Autores: Eissazadeh,Samira; Moeini,Hassan; Dezfouli,Maryam Ghandizadeh; Heidary,Somayyeh; Nelofer,Rubina; Abdullah,Mohd Puad.
Abstract This study was carried out to express human epidermal growth factor (hEGF) in Pichia pastoris GS115. For this aim, the hEGF gene was cloned into the pPIC9K expression vector, and then integrated into P. pastoris by electroporation. ELISA-based assay showed that the amount of hEGF secreted into the medium can be affected by the fermentation conditions especially by culture medium, pH and temperature. The best medium for the optimal hEGF production was BMMY buffered at a pH range of 6.0 and 7.0. The highest amount of hEGF with an average yield of 2.27 µg/mL was obtained through an induction of the culture with 0.5% (v/v) methanol for 60 h. The artificial neural network (ANN) analysis revealed that changes in both pH and temperature significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pichia pastoris; Human epidermal growth factor; Artificial neural network.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200286

Oxidative stress and antioxidant response in a thermotolerant yeast
Provedor de dados: 58
Autores: Mejía-Barajas,Jorge A.; Montoya-Pérez,Rocío; Salgado-Garciglia,Rafael; Aguilera-Aguirre,Leopoldo; Cortés-Rojo,Christian; Mejía-Zepeda,Ricardo; Arellano-Plaza,Melchor; Saavedra-Molina,Alfredo.
Abstract Stress tolerance is a key attribute that must be considered when using yeast cells for industrial applications. High temperature is one factor that can cause stress in yeast. High environmental temperature in particular may exert a natural selection pressure to evolve yeasts into thermotolerant strains. In the present study, three yeasts (Saccharomyces cerevisiae, MC4, and Kluyveromyces marxianus, OFF1 and SLP1) isolated from hot environments were exposed to increased temperatures and were then compared with a laboratory yeast strain. Their resistance to high temperature, oxidative stress, and antioxidant response were evaluated, along with the fatty acid composition of their cell membranes. The SLP1 strain showed a higher specific growth rate,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yeast; Increased temperature; Oxygen-derived free radicals; Thermotolerant.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200326

Fermentation process for production of apple-based kefir vinegar: microbiological, chemical and sensory analysis
Provedor de dados: 58
Autores: Viana,Roberta Oliveira; Magalhães-Guedes,Karina Teixeira; Braga Jr.,Roberto Alves; Dias,Disney Ribeiro; Schwan,Rosane Freitas.
Abstract The aim of this study was to develop a kefir apple-based vinegar and evaluate this fermentation process using new methodology with Biospeckle Laser. Brazilian kefir grains were inoculated in apple must for vinegar production. In this study, the microbial community present in kefir, and correspondent vinegar, was investigated using Matrix Assisted Laser Desorption/Ionization - Time of Flight Mass Spectrometry (MALDI-TOF MS) technique. Saccharomyces cerevisiae, Lactobacillus paracasei, Lactobacillus plantarum, Acetobacter pasteurianus and Acetobacter syzygii were the microbial species identified. S. cerevisiae, L. plantarum, A. pasteurianus and A. syzygii were found in smaller quantities at the beginning of the alcoholic fermentation, but were found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yeast; Saccharomyces; Lactobacillus; Apple; MALDI-TOF; Biospeckle Laser; Vinegar.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300592

Molecular characterization of ureaplasmas isolated from reproductive tract of goats and sheep from Brazil
Provedor de dados: 58
Autores: Oliveira,Rosângela C.; Yamaguti,Maurício; Marques,Lucas M.; Buzinhani,Melissa; Rizzo,Huber; Meira-Junior,Enoch Brandão de Souza; Guimarães,Ana Márcia S.; Gregory,Lilian; Timenetsky,Jorge.
Abstract Ovine/caprine ureaplasmas have not yet been assigned a species designation, but they have been classified into nine serotypes. Herein ureaplasmas were searched for in 120 samples of vulvo vaginal mucous from sheep and 98 samples from goats at 17 farms. In addition, semen samples were collected from 11 sheep and 23 goats. The recovered ureaplasma were from sheep and goats from animals without any reproductive disorder symptoms, but not all animals presented positive cultures. In sheep, 17 (68%) cultures of vulvovaginal mucous were positive for ureaplasma and 11 (27%) samples of semen presented positive cultures in animals with clinical signs of orchitis, balanoposthitis or low sperm motility. In goats four ureaplasma isolates were obtained from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ureaplasma; Ovine; Caprine; Molecular characterization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300560

Antibacterial efficacy of nisin, bacteriophage P100 and sodium lactate against Listeria monocytogenes in ready-to-eat sliced pork ham
Provedor de dados: 58
Autores: Figueiredo,Ana Cláudia L.; Almeida,Rogeria C.C.
ABSTRACT The effectiveness of bacteriophage P100, nisin and sodium lactate, individually and in combination, in inhibiting Listeria monocytogenes in ready-to-eat pork ham slices was assessed. The antimicrobials were applied to the surfaces of ready-to-eat pork ham slices, which were inoculated with a mixture of L. monocytogenes. Among the individual antimicrobial treatments, bacteriophage P100 was the most effective, decreasing L. monocytogenes to undetectable levels at zero and 72 h post-infection. Sodium lactate was the least effective treatment. Treatment with nisin at zero h significantly reduced initial cell density (p &lt; 0.05). However, this pattern was not observed at 72 h of storage. A significant difference (p &lt; 0.05) existed between the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobials; Food safety; Meat products; Listeria monocytogenes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400724

Endophytic fungus Purpureocillium sp. A5 protect mangrove plant Kandelia candel under copper stress
Provedor de dados: 58
Autores: Gong,Bin; Liu,Guixiang; Liao,Rquan; Song,Jingjing; Zhang,Hong.
Abstract Mangrove is an important ecosystem in the world. Mangrove ecosystems have a large capacity in retaining heavy metals, and now they are usually considered as sinks for heavy metals. However, the mechanism of why the soil of mangrove ecosystems can retain heavy metal is not certain. In this research, endophytic fungus Purpureocillium sp. A5 was isolated and identified from the roots of Kandelia candel. When this fungus was added, it protected the growth of K. candel under Cu stress. This can be illustrated by analyzing chlorophyll A and B, RWC and WSD to leaves of K. candel. Purpureocillium sp. A5 reduces uptake of Cu in K. candel and changes the pH characterization of soil. Furthermore, A5 increase the concentration of Cu complexes in soil, and it...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endophytic fungi; Purpureocillium lilacinum; Kandelia candel; Copper stress; Mangrove.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300530

Production of flavor compounds from olive mill waste by Rhizopus oryzae and Candida tropicalis
Provedor de dados: 58
Autores: Guneser,Onur; Demirkol,Asli; Yuceer,Yonca Karagul; Togay,Sine Ozmen; Hosoglu,Muge Isleten; Elibol,Murat.
Abstract The purpose of this study was to investigate the production of flavor compounds from olive mill waste by microbial fermentation of Rhizopus oryzae and Candida tropicalis. Olive mill waste fermentations were performed in shake and bioreactor cultures. Production of flavor compounds from olive mill waste was followed by Gas Chromatography–Mass spectrometry, Gas chromatography- olfactometry and Spectrum Sensory Analysis ®. As a result, 1.73-log and 3.23-log cfu/mL increases were observed in the microbial populations of R. oryzae and C. tropicalis during shake cultures, respectively. C. tropicalis can produce a higher concentration of d-limonene from olive mill waste than R. oryzae in shake cultures. The concentration of d-limonene was determined as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Olive mill waste; Biotechnology; Microbial fermentation; Bioflavor; Agro-waste.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200275

Development of a propidium monoazide-polymerase chain reaction assay for detection of viable Lactobacillus brevis in beer
Provedor de dados: 58
Autores: Ma,Yanlin; Deng,Yang; Xu,Zhenbo; Liu,Junyan; Dong,Jianjun; Yin,Hua; Yu,Junhong; Chang,Zongming; Wang,Dongfeng.
ABSTRACT The spoilage of beer by bacteria is of great concern to the brewer as this can lead to turbidity and abnormal flavors. The polymerase chain reaction (PCR) method for detection of beer-spoilage bacteria is highly specific and provides results much faster than traditional microbiology techniques. However, one of the drawbacks is the inability to differentiate between live and dead cells. In this paper, the combination of propidium monoazide (PMA) pretreatment and conventional PCR had been described. The established PMA-PCR identified beer spoilage Lactobacillus brevis based not on their identity, but on the presence of horA gene which we show to be highly correlated with the ability of beer spoilage LAB to grow in beer. The results suggested that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propidium monoazide; Polymerase chain reaction; Beer spoilage bacteria; Lactobacillus brevis horA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400740

Complete genome sequence of the aerobically denitrifying thermophilic bacterium Chelatococcus daeguensis TAD1
Provedor de dados: 58
Autores: Yang,Yunlong; Lin,Ershu; Huang,Shaobin.
ABSTRACT Chelatococcus daeguensis TAD1 is a themophilic bacterium isolated from a biotrickling filter used to treat NOx in Ruiming Power Plant, located in Guangzhou, China, which shows an excellent aerobic denitrification activity at high temperature. The complete genome sequence of this strain was reported in the present study. Genes related to the aerobic denitrification were identified through whole genome analysis. This work will facilitate the mechanism of aerobic denitrification and provide evidence for its potential application in the nitrogen removal.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chelatococcus daeguensis TAD1; Complete genome sequencing; Aerobic denitrification.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400615

Correlation of phenotypic tests with the presence of the blaZ gene for detection of beta-lactamase
Provedor de dados: 58
Autores: Ferreira,Adriano Martison; Martins,Katheryne Benini; Silva,Vanessa Rocha da; Mondelli,Alessandro Lia; Cunha,Maria de Lourdes Ribeiro de Souza da.
Abstract Staphylococcus aureus and Staphylococcus saprophyticus are the most common and most important staphylococcal species associated with urinary tract infections. The objective of the present study was to compare and to evaluate the accuracy of four phenotypic methods for the detection of beta-lactamase production in Staphylococcus spp. Seventy-three strains produced a halo with a diameter ≤28 mm (penicillin resistant) and all of them were positive for the blaZ gene. Among the 28 susceptible strain (halo ≥29 mm), 23 carried the blaZ gene and five did not. The zone edge test was the most sensitive (90.3%), followed by MIC determination (85.5%), but the specificity of the former was low (40.0%). The nitrocefin test was the least sensitive (28.9%)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urinary tract infection; Staphylococcus saprophyticus; Zone edge test; Beta-lactamase; BlaZ.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100159

Growth kinetic models of five species of Lactobacilli and lactose consumption in batch submerged culture
Provedor de dados: 58
Autores: Rezvani,Fazlollah; Ardestani,Fatemeh; Najafpour,Ghasem.
Abstract Kinetic behaviors of five Lactobacillus strains were investigated with Contois and Exponential models. Awareness of kinetic behavior of microorganisms is essential for their industrial process design and scale up. The consistency of experimental data was evaluated using Excel software. L. bulgaricus was introduced as the most efficient strain with the highest biomass and lactic acid yield of 0.119 and 0.602 g g-1 consumed lactose, respectively. The biomass and carbohydrate yield of L. fermentum and L. lactis were slightly less and close to L. bulgaricus. Biomass and lactic acid production yield of 0.117 and 0.358 for L. fermentum and 0.114 and 0.437 g g-1 for L.actobacillus lactis were obtained. L. casei and L. delbrueckii had the less biomass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial growth; Exponential kinetic model; Contois model; Lactobacilli.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200251

Draft genome sequence of Streptomyces sp. strain F1, a potential source for glycoside hydrolases isolated from Brazilian soil
Provedor de dados: 58
Autores: Melo,Ricardo Rodrigues de; Persinoti,Gabriela Felix; Paixão,Douglas Antonio Alvaredo; Squina,Fábio Márcio; Ruller,Roberto; Sato,Helia Harumi.
ABSTRACT Here, we show the draft genome sequence of Streptomyces sp. F1, a strain isolated from soil with great potential for secretion of hydrolytic enzymes used to deconstruct cellulosic biomass. The draft genome assembly of Streptomyces sp. strain F1 has 69 contigs with a total genome size of 8,142,296 bp and G + C 72.65%. Preliminary genome analysis identified 175 proteins as Carbohydrate-Active Enzymes, being 85 glycoside hydrolases organized in 33 distinct families. This draft genome information provides new insights on the key genes encoding hydrolytic enzymes involved in biomass deconstruction employed by soil bacteria.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Actinobacteria; Glycoside hydrolases; Streptomyces; Draft genome sequence; Soil bacteria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400612

Degradation of textile dyes by cyanobacteria
Provedor de dados: 58
Autores: Dellamatrice,Priscila Maria; Silva-Stenico,Maria Estela; Moraes,Luiz Alberto Beraldo de; Fiore,Marli Fátima; Monteiro,Regina Teresa Rosim.
Abstract Dyes are recalcitrant compounds that resist conventional biological treatments. The degradation of three textile dyes (Indigo, RBBR and Sulphur Black), and the dye-containing liquid effluent and solid waste from the Municipal Treatment Station, Americana, São Paulo, Brazil, by the cyanobacteria Anabaena flos-aquae UTCC64, Phormidium autumnale UTEX1580 and Synechococcus sp. PCC7942 was evaluated. The dye degradation efficiency of the cyanobacteria was compared with anaerobic and anaerobic-aerobic systems in terms of discolouration and toxicity evaluations. The discoloration was evaluated by absorption spectroscopy. Toxicity was measured using the organisms Hydra attenuata, the alga Selenastrum capricornutum and lettuce seeds. The three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dyes; Toxicity; Discoloration; Cyanobacteria; Degradation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100025

Pectin lyase overproduction by Penicillium griseoroseum mutants resistant to catabolite repression
Provedor de dados: 58
Autores: Lima,Juliana Oliveira; Pereira,Jorge Fernando; Araújo,Elza Fernandes de; Queiroz,Marisa Vieira de.
Abstract Expression of pectinolytic genes is regulated by catabolic repression limiting the production of pectin lyase (PL) if the natural inducer, pectin, is missing from the growth medium. Here, we report the isolation of Penicillium griseoroseum mutants resistant to 2-deoxy-d-glucose (DG) that show resistance to catabolite repression and overproduce PL. Three spontaneous and nine UV-induced mutants were obtained. Some mutants produced sectors (segments morphologically different) that were also studied. The mutants were analyzed for pectinases production on pectinase-agar plates and five mutants and two sectors showing larger clearing zones than the wild type were selected for quantitative assay. Although PL production higher than the wild type has been...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2-Deoxy-d-glucose; Ultraviolet mutagenesis; Pectinolytic complex; Spontaneous mutant.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300602

Roles of quorum sensing molecules from Rhizobium etli RT1 in bacterial motility and biofilm formation
Provedor de dados: 58
Autores: Dixit,Swarnita; Dubey,Ramesh Chand; Maheshwari,Dinesh Kumar; Seth,Prahlad Kishore; Bajpai,Vivek K.
ABSTRACT Strain RT1 was isolated from root nodules of Lens culinaris (a lentil) and characterized as Rhizobium etli (a Gram-negative soil-borne bacterium) by 16S rDNA sequencing and phylogenetic analysis. The signaling molecules produced by R. etli (RT1) were detected and identified by high-performance liquid chromatography coupled with mass spectrometry. The most abundant and biologically active N-acyl homoserine lactone molecules (3-oxo-C8-HSL and 3-OH-C14-HSL) were detected in the ethyl acetate extract of RT1. The biological role of 3-oxo-C8-HSL was evaluated in RT1. Bacterial motility and biofilm formation were affected or modified on increasing concentrations of 3-oxo-C8-HSL. Results confirmed the existence of cell communication in RT1 mediated by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizobium etli; Quorum sensing; Motility; Biofilm; Lens culinaris.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400815

Dark septate endophyte decreases stress on rice plants
Provedor de dados: 58
Autores: Santos,Silvana Gomes dos; Silva,Paula Renata Alves da; Garcia,Andres Calderin; Zilli,Jerri Édson; Berbara,Ricardo Luis Louro.
Abstract Abiotic stress is one of the major limiting factors for plant development and productivity, which makes it important to identify microorganisms capable of increasing plant tolerance to stress. Dark septate endophytes can be symbionts of plants. In the present study, we evaluated the ability of dark septate endophytes isolates to reduce the effects of water stress in the rice varieties Nipponbare and Piauí. The experiments were performed under gnotobiotic conditions, and the water stress was induced with PEG. Four dark septate endophytes were isolated from the roots of wild rice (Oryza glumaepatula) collected from the Brazilian Amazon. Plant height as well as shoot and root fresh and dry matter were measured. Leaf protein concentrations and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L.; DSE; Water stress tolerance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200333

Phenol degradation and genotypic analysis of dioxygenase genes in bacteria isolated from sediments
Provedor de dados: 58
Autores: Tian,Mengyang; Du,Dongyun; Zhou,Wei; Zeng,Xiaobo; Cheng,Guojun.
Abstract The aerobic degradation of aromatic compounds by bacteria is performed by dioxygenases. To show some characteristic patterns of the dioxygenase genotype and its degradation specificities, twenty-nine gram-negative bacterial cultures were obtained from sediment contaminated with phenolic compounds in Wuhan, China. The isolates were phylogenetically diverse and belonged to 10 genera. All 29 gram-negative bacteria were able to utilize phenol, m-dihydroxybenzene and 2-hydroxybenzoic acid as the sole carbon sources, and members of the three primary genera Pseudomonas, Acinetobacter and Alcaligenes were able to grow in the presence of multiple monoaromatic compounds. PCR and DNA sequence analysis were used to detect dioxygenase genes coding for catechol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isolation and identification; Gram-negative bacteria; Substrate utilization; Dioxygenase genes; Phenol biodegradation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200305

Evaluation of short-chain-length polyhydroxyalkanoate accumulation in Bacillus aryabhattai
Provedor de dados: 58
Autores: Pillai,Aneesh Balakrishna; Kumar,Arjun Jaya; Thulasi,Kavitha; Kumarapillai,Harikrishnan.
Abstract This study was focused on the polyhydroxybutyrate (PHB) accumulation property of Bacillus aryabhattai isolated from environment. Twenty-four polyhydroxyalkanoate (PHA) producers were screened out from sixty-two environmental bacterial isolates based on Sudan Black B colony staining. Based on their PHA accumulation property, six promising isolates were further screened out. The most productive isolate PHB10 was identified as B. aryabhattai PHB10. The polymer production maxima were 3.264 g/L, 2.181 g/L, 1.47 g/L, 1.742 g/L and 1.786 g/L in glucose, fructose, maltose, starch and glycerol respectively. The bacterial culture reached its stationary and declining phases at 18 h and 21 h respectively and indicated growth-associated PHB production. Nuclear...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus aryabhattai PHB10; Polyhydroxybutyrate; Domestic sewerage; Polymer characterization; 16S rRNA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300451

The effect of heavy metal contamination on the bacterial community structure at Jiaozhou Bay, China
Provedor de dados: 58
Autores: Yao,Xie-feng; Zhang,Jiu-ming; Tian,Li; Guo,Jian-hua.
Abstract In this study, determination of heavy metal parameters and microbiological characterization of marine sediments obtained from two heavily polluted sites and one low-grade contaminated reference station at Jiaozhou Bay in China were carried out. The microbial communities found in the sampled marine sediments were studied using PCR-DGGE (denaturing gradient gel electrophoresis) fingerprinting profiles in combination with multivariate analysis. Clustering analysis of DGGE and matrix of heavy metals displayed similar occurrence patterns. On this basis, 17 samples were classified into two clusters depending on the presence or absence of the high level contamination. Moreover, the cluster of highly contaminated samples was further classified into two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metal contamination; PCR-DGGE fingerprinting; Multivariate analysis; Bacterial community structure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100071

Whole genome sequence of lactic acid bacterium Pediococcus acidilactici strain S1
Provedor de dados: 58
Autores: Park,Gun-Seok; Hong,Sung-Jun; Jung,Byung Kwon; Park,Seulki; Jin,Hyewon; Lee,Sang-Jae; Shin,Jae-Ho; Lee,Han-Seung.
Abstract Pediococcus acidilactici strain S1, a lactic acid-fermenting bacterium, was isolated from makgeolli-a Korean traditional fermented alcoholic beverage. Here we report the 1,980,172 bp (G + C content, 42%) genome sequence of Pediococcus acidilactici strain S1 with 1,525 protein-coding sequences (CDS), of which 47% could be assigned to recognized functional genes. The genome sequence of the strain S1 might provide insights into the genetic basis of the lactic acid bacterium with alcohol-tolerant.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pediococcus spp.; Lactic acid bacteria; Microbial genome; Alcohol-tolerant.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300395

Effects of monosulfuron-ester on metabolic processes of nitrogen-fixing cyanobacteria Anabaena flos-aquae and Anabaena azotica
Provedor de dados: 58
Autores: Shen,Jian Ying; Liao,Jin Zhi; Guo,Li Li; Su,Rui Fang.
Abstract Presence of the relatively new sulfonylurea herbicide monosulfuron-ester at 0.03-300 nmol/L affected the growth of two non-target nitrogen-fixing cyanobacteria (Anabaena flos-aquae and Anabaena azotica) and substantially inhibited in vitro Acetolactate synthase activity, with IC50 of 3.3 and 101.3 nmol/L for A. flos-aquae and A. azotica, respectively. Presenting in 30-300 nmol/L, it inhibited protein synthesis of the cyanobacteria with less amino acids produced as its concentration increased. Our findings support the view that monosulfuron-ester toxicity in both nitrogen-fixing cyanobacteria is due to its interference with protein metabolism via inhibition of branch-chain amino acid biosynthesis, and particularly Acetolactate synthase activity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetolactate synthase; Amino acids; Cyanobacteria; Monosulfuron-ester.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300544

Production of recombinant flagellin to develop ELISA-based detection of Salmonella Enteritidis
Provedor de dados: 58
Autores: Mirhosseini,Seyed Ali; Fooladi,Abbas Ali Imani; Amani,Jafar; Sedighian,Hamid.
ABSTRACT Food-borne diseases, caused by the pathogenic bacteria, are highly prevalent in the world. Salmonella is one of the most important bacterial genera responsible for this. Salmonella Enteritidis (SE) is one of the non-typhoid Salmonellae that can be transmitted to human from poultry products, water, and contaminated food. In recent years, new and rapid detection methods such as enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR) have been developed. In this study, recombinant FliC (rFliC) was produced to be used as an antigen. The immunization was conducted in mice with the purified recombinant FliC (rFliC). The mice were subcutaneously immunized with rFliC and elicited significant rFliC specific serum IgG antibodies. An...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella Enteritidis; Flagellin C; Indirect ELISA; Bacterial detection; Food contaminated.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400774

Zearalenone adsorption capacity of lactic acid bacteria isolated from pigs
Provedor de dados: 58
Autores: Vega,María F.; Dieguez,Susana N.; Riccio,Belén; Aranguren,Sandra; Giordano,Antonio; Denzoin,Laura; Soraci,Alejandro L.; Tapia,María O.; Ross,Romina; Apás,Ana; González,Silvia N.
ABSTRACT The ability to adsorb zearalenone by five strain of lactic acid bacteria was evaluated: four strains of Lactobacillus spp. isolated from pig rectal swabs and one commercial strain (Lactobacillus rhamnosus). Several factors affecting the adsorption capacity were evaluated in order to improve the adsorption of the mycotoxin by bacteria. The stability of the zearalenone-bacteria complex was analyzed. In every case, bacterial adsorption capacity was higher than 40.0%. The strain showing the highest adsorption (68.2%) was selected for the following steps of this research. The adsorption percentages obtained after processing 6.5 and 7.5 mL MRS broth were 57.40% + 3.53 and 64.46% + 0.76, respectively. The stability of zearalenone-bacteria complex was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zearalenone; Adsorption; Lactic acid bacteria; Lactobacillus; Pigs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400715

Molecular characterization of methicillin-resistant Staphylococcus aureus isolated from blood in Rio de Janeiro displaying susceptibility profiles to non-β-lactam antibiotics
Provedor de dados: 58
Autores: Zuma,Alexandra Vidal Pedinotti; Lima,Danielle Ferreira; Assef,Ana Paula D'Alincourt Carvalho; Marques,Elizabeth Andrade; Leão,Robson Souza.
Abstract The distinction between healthcare-associated MRSA (HA-MRSA) and community-associated MRSA (CA-MRSA) infections has become increasingly blurred. We assessed the molecular characterization and antimicrobial resistance profile for MRSA isolates from blood. Most of all (81.9%) isolates are related to known HA-MRSA and CA-MRSA epidemic lineages, such as, USA300, USA400, USA600, USA800 and USA1100. This is the first multicenter study in Rio de Janeiro.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MRSA; MLST; USA800; USA400; USA1100.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200237

Characterization of dioxygenases and biosurfactants produced by crude oil degrading soil bacteria
Provedor de dados: 58
Autores: Muthukamalam,Santhakumar; Sivagangavathi,Sivalingam; Dhrishya,Dharmapal; Sudha Rani,Sadras.
ABSTRACT Role of microbes in bioremediation of oil spills has become inevitable owing to their eco friendly nature. This study focused on the isolation and characterization of bacterial strains with superior oil degrading potential from crude-oil contaminated soil. Three such bacterial strains were selected and subsequently identified by 16S rRNA gene sequence analysis as Corynebacterium aurimucosum, Acinetobacter baumannii and Microbacterium hydrocarbonoxydans respectively. The specific activity of catechol 1,2 dioxygenase (C12O) and catechol 2,3 dioxygenase (C23O) was determined in these three strains wherein the activity of C12O was more than that of C23O. Among the three strains, Microbacterium hydrocarbonoxydans exhibited superior crude oil degrading...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude oil; Biodegradation; Bacteria; Catechol dioxygenase; Biosurfactant.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400637

Nitrogen-fixing bacteria and arbuscular mycorrhizal fungi in Piptadenia gonoacantha (Mart.) Macbr.
Provedor de dados: 58
Autores: Oliveira Júnior,Joel Quintino de; Jesus,Ederson da Conceição; Lisboa,Francy Junio; Berbara,Ricardo Luis Louro; Faria,Sergio Miana de.
Abstract The family Leguminosae comprises approximately 20,000 species that mostly form symbioses with arbuscular mycorrhizal fungi (AMF) and nitrogen-fixing bacteria (NFB). This study is aimed at investigating and confirming the dependence on nodulation and biological nitrogen fixation in the specie Piptadenia gonoacantha (Mart.) Macbr., which belongs to the Piptadenia group. Two consecutive experiments were performed in a greenhouse. The experiments were fully randomized with six replicates and a factorial scheme. For the treatments, the two AMF species and three NFB strains were combined to nodulate P. gonoacantha in addition to the control treatments. The results indicate this species’ capacity for nodulation without the AMF; however, the AMF + NFB...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Synergy; Nodulation; Biological nitrogen fixation; “Pau-jacaré”.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100095

Enzymatic comparison and mortality of Beauveria bassiana against cabbage caterpillar Pieris brassicae LINN
Provedor de dados: 58
Autores: Dhawan,Manish; Joshi,Neelam.
Abstract Beauveria bassiana, an entomopathogenic fungus, is the alternative biocontrol agent exploited against major economic crop pests. Pieris brassicae L. is an emerging pest of the Brassicaceae family. Therefore, in the present study, fungal isolates of Beauveria bassiana, viz. MTCC 2028, MTCC 4495, MTCC 6291, and NBAII-11, were evaluated for their virulence against third instar larvae of P. brassicae. Among all these fungal isolates, maximum mortality (86.66%) was recorded in B. bassiana MTCC 4495 at higher concentration of spores (109 conidia/ml), and the minimum mortality (30.00%) was recorded in B. bassiana MTCC 6291 at a lower concentration (107 conidia/ml) after ten days of treatment. The extracellular cuticle-degrading enzyme activities of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chitinase; Entomopathogenic fungi; Lipase; Mortality; Protease.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300522

Analysis of microbial diversity in Shenqu with different fermentation times by PCR-DGGE
Provedor de dados: 58
Autores: Liu,Tengfei; Jia,Tianzhu; Chen,Jiangning; Liu,Xiaoyu; Zhao,Minjie; Liu,Pengpeng.
Abstract Shenqu is a fermented product that is widely used in traditional Chinese medicine (TCM) to treat indigestion; however, the microbial strains in the fermentation process are still unknown. The aim of this study was to investigate microbial diversity in Shenqu using different fermentation time periods. DGGE (polymerase chain reaction-denaturing gradient gel electrophoresis) profiles indicated that a strain of Pediococcus acidilactici (band 9) is the predominant bacteria during fermentation and that the predominant fungi were uncultured Rhizopus, Aspergillus oryzae, and Rhizopus oryzae. In addition, pathogenic bacteria, such as Enterobacter cloacae, Klebsiella oxytoca, Erwinia billingiae, and Pantoea vagan were detected in Shenqu. DGGE analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial diversity; PCR-DGGE; Shenqu; Molecular cloning.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200246

Characterization of rhizobia isolates obtained from nodules of wild genotypes of common bean
Provedor de dados: 58
Autores: Cardoso,Aline Assis; Andraus,Michel de Paula; Borba,Tereza Cristina de Oliveira; Martin-Didonet,Claudia Cristina Garcia; Ferreira,Enderson Petrônio de Brito.
Abstract This study aimed to evaluate the tolerance to salinity and temperature, the genetic diversity and the symbiotic efficiency of rhizobia isolates obtained from wild genotypes of common bean cultivated in soil samples from the States of Goiás, Minas Gerais and Paraná. The isolates were subjected to different NaCl concentrations (0%, 1%, 2%, 4% and 6%) at different temperatures (28 °C, 33 °C, 38 °C, 43 °C and 48 °C). Genotypic characterization was performed based on BOX-PCR, REP-PCR markers and 16S rRNA sequencing. An evaluation of symbiotic efficiency was carried out under greenhouse conditions in autoclaved Leonard jars. Among 98 isolates about 45% of them and Rhizobium freirei PRF81 showed a high tolerance to temperature, while 24 isolates and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Rhizobium; Symbiotic efficiency; Carbon source use; Tolerance to salinity and temperature.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100043

Prevalence of Candida spp. in cervical-vaginal samples and the in vitro susceptibility of isolates
Provedor de dados: 58
Autores: Brandolt,Tchana Martinez; Klafke,Gabriel Baracy; Gonçalves,Carla Vitola; Bitencourt,Laura Riffel; Martinez,Ana Maria Barral de; Mendes,Josiara Furtado; Meireles,Mário Carlos Araújo; Xavier,Melissa Orzechowski.
Abstract Vulvovaginal candidiasis (VVC) is an infection of the genital mucosa caused by different species of the genus Candida. Considering the lack of data on this topic in the south of Brazil, this study aimed to assess the prevalence of Candida spp. in the cervical-vaginal mucosa of patients treated at a university hospital in southern Rio Grande do Sul, as well as the etiology and the susceptibility of the isolates against fluconazole, itraconazole, miconazole and nystatin. Samples were collected at the gynecology clinic of the Federal Hospital of the University of Rio Grande, and the isolates were identified using phenotypic and biochemical tests. The susceptibility analysis was performed according to the CLSI M27-A2 protocol. Of the 263 patients...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vulvovaginal candidiasis; Antifungal; Susceptibility; Resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100145

Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord
Provedor de dados: 58
Autores: Sinha,Rupesh Kumar; Krishnan,Kottekkatu Padinchati; Hatha,Ammanamveetil Abdulla Mohamed; Rahiman,Mujeeb; Thresyamma,Divya David; Kerkar,Savita.
Abstract The diversity and abundance of retrievable pelagic heterotrophic bacteria in Kongsfjorden, an Arctic fjord, was studied during the summer of 2011 (June, August, and September). Retrievable bacterial load ranged from 103 to 107 CFU L−1 in June, while it was 104-106 CFU L−1 in August and September. Based on 16S rRNA gene sequence similarities, a higher number of phylotypes was observed during August (22 phylotypes) compared to that during June (6 phylotypes) and September (12 phylotypes). The groups were classified into four phyla: Firmicutes, Actinobacteria, Proteobacteria, and Bacteroidetes. Bacteroidetes was represented only by a single member Leewenhoekiella aequorea during the three months and was dominant (40%) in June. However, this dominance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kongsfjorden; Retrievable heterotrophic bacteria; 16S rRNA; Arctic fjord.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100051

Draft genome sequence of a GES-5-producing Serratia marcescens isolated in southern Brazil
Provedor de dados: 58
Autores: Nodari,Carolina Silva; Siebert,Marina; Matte,Ursula da Silveira; Barth,Afonso Luís.
Abstract Serratia marcescens is a Gram-negative rod intrinsically resistant to polymyxins and usually associated with wound, respiratory and urinary tract infections. The whole genome of the first GES-5-producing S. marcescens isolated from a Brazilian patient was sequenced using Ion Torrent PGM System. Besides blaGES-5, we were able to identify genes encoding for other β-lactamases, for aminoglycoside modifying enzymes and for an efflux pump to tetracyclines.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: GES-5; Serratia marcescens; Whole-genome sequencing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200191

Isolation of fungi from dung of wild herbivores for application in bioethanol production
Provedor de dados: 58
Autores: Makhuvele,Rhulani; Ncube,Ignatious; Jansen van Rensburg,Elbert Lukas; La Grange,Daniël Coenrad.
ABSTRACT Producing biofuels such as ethanol from non-food plant material has the potential to meet transportation fuel requirements in many African countries without impacting directly on food security. The current shortcomings in biomass processing are inefficient fermentation of plant sugars, such as xylose, especially at high temperatures, lack of fermenting microbes that are able to resist inhibitors associated with pre-treated plant material and lack of effective lignocellulolytic enzymes for complete hydrolysis of plant polysaccharides. Due to the presence of residual partially degraded lignocellulose in the gut, the dung of herbivores can be considered as a natural source of pre-treated lignocellulose. A total of 101 fungi were isolated (36 yeast...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lignocellulase; Biofuel; Fungi; Xylose; Fermentation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400648

Complete genome sequence of a phthalic acid esters degrading Mycobacterium sp. YC-RL4
Provedor de dados: 58
Autores: Ren,Lei; Fan,Shuanghu; Wang,Junhuan; Ruth,Nahurira; Qiao,Cheng; Jia,Yang; Yan,Yanchun.
ABSTRACT Mycobacterium sp. YC-RL4 is capable of utilizing a broad range of phthalic acid esters (PAEs) as sole source of carbon and energy for growth. The preliminary studies demonstrated its high degrading efficiency and good performance during the bioprocess with environmental samples. Here, we present the complete genome of Mycobacterium sp. YC-RL4, which consists of one circular chromosome (5,801,417 bp) and one plasmid (252,568 bp). The genomic analysis and gene annotation were performed and many potential genes responsible for the biodegradation of PAEs were identified from the genome. These results may advance the investigation of bioremediation of PAEs-contaminated environments by strain YC-RL4.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genome Sequence; Mycobacterium sp.; Biodegradation; Phthalic acid esters.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400607

Draft genome of Nocardia farcinica TRH1, a linear and polycyclic aromatic hydrocarbon-degrading bacterium isolated from the coast of Trindade Island, Brazil
Provedor de dados: 58
Autores: Rodrigues,Edmo M.; Vidigal,Pedro Marcus P.; Pylro,Victor S.; Morais,Daniel K.; Leite,Laura Rabelo; Roesch,Luiz F.W.; Tótola,Marcos R.
Abstract Here, we report the draft genome sequence and annotation of Nocardia farcinica TRH1, a petroleum hydrocarbons degrading Actinobacteria isolated from the coastal water of Trindade Island, Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydrocarbon bioremediation; Pristine environment; PAH biodegradation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300391

Enhanced ethanol production at commercial scale from molasses using high gravity technology by mutant S. cerevisiae
Provedor de dados: 58
Autores: Arshad,Muhammad; Hussain,Tariq; Iqbal,Munawar; Abbas,Mazhar.
Abstract Very high gravity (VHG) technology was employed on industrial scale to produce ethanol from molasses (fermented) as well as by-products formation estimation. The effect of different Brix° (32, 36 and 40) air-flow rates (0.00, 0.20, 0.40, and 0.60 vvm) was studied on ethanol production. The maximum ethanol production was recorded to be 12.2% (v/v) at 40 Brix° with 0.2 vvm air-flow rate. At optimum level aeration and 40 Brix° VHG, the residual sugar level was recorded in the range of 12.5-18.5 g/L, whereas the viable cell count remained constant up to 50 h of fermentation and dry matter production increased with fermentation time. Both water and steam consumption reduced significantly under optimum conditions of Brix° and aeration rate with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Very high gravity technology; Ethanol; Molasses; Aeration; Brix.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300403

Production of native arbuscular mycorrhizal fungi inoculum under different environmental conditions
Provedor de dados: 58
Autores: Torres-Arias,Yamir; Fors,Rosalba Ortega; Nobre,Camila; Gómez,Eduardo Furrazola; Berbara,Ricardo Luis Louro.
Abstract In order to obtain an arbuscular mycorrhizal fungi (AMF) native inoculum from Sierra de Moa and determine the most appropriate conditions for its big scale production, four light and temperature combinations were tested in three plant species (Calophyllum antillanum, Talipariti elatum and Paspalum notatum). Growth and development parameters, as well as the mycorrhizal functioning of the seedlings were evaluated. The natural light treatment under high temperatures (L-H) was the most suitable for the growth and development of the three plant species, showing the highest total biomass values, mainly of root, and a positive root-shoot ratio balance. This treatment also promoted higher values of root mycorrhizal colonization, external mycelium and AMF...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calophyllum antillanum; Talipariti elatum; Paspalum notatum; Inoculum; Glomeromycota.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100087

Malignant Catarrhal Fever in Brazilian cattle presenting with neurological syndrome
Provedor de dados: 58
Autores: Martins,Maira de S.N.; Castro,Alessandra M.M.G. de; Lima,Michele dos S.; Pinto,Vivian da S.C.; Silva,Thaís G. da; Fava,Claudia Del; Depes,Claudio Regis; Okuda,Liria H.; Pituco,Edviges M.
Abstract Malignant Catarrhal Fever (MCF) was investigated in the central nervous system of cattle with neurological syndrome. Two-hundred-ninety samples were analyzed by histology, and molecular methods to detect ovine herpesvirus type 2 (OvHV-2) were optimized and validated. The qualitative polymerase chain reaction (qualitative PCR) analytical sensitivity was 101 DNA copies/µL and found 4.8% (14/290) positive for OvHV-2. The quantitative polymerase chain reaction (qPCR) analytical sensitivity was 100 DNA copy/µL and 5.9% (17/290) positivity, with 47.1% (8/17) of the positive samples presenting histological evidence of non-purulent meningo-encephalitis. The qualitative PCR products (422 bp of the ORF75 region) were sequenced and submitted to phylogenetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovine herpesvirus type 2 (OvHV-2); Histopathology; Qualitative PCR; Quantitative PCR; Phylogenetic analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200366

Comparison of culture and PCR methods in the diagnosis of bacterial meningitis
Provedor de dados: 58
Autores: Başpınar,Emel Ödemiş; Dayan,Saim; Bekçibaşı,Muhammed; Tekin,Recep; Ayaz,Celal; Deveci,Özcan; Hoşoğlu,Salih.
Abstract Our aim in this study is to compare the standard culture method with the multiplex PCR and the Speed-Oligo® Bacterial Meningitis Test (SO-BMT) – a hybridization-based molecular test method – during the CSF examination of the patients with the pre-diagnosis of acute bacterial meningitis. For the purposes of this study, patients with acute bacterial meningitis treated at the Dicle University Medical Faculty Hospital, Infectious Diseases and Clinical Microbiology Clinic between December 2009 and April 2012 were retrospectively evaluated. The diagnosis of bacterial meningitis was made based on the clinical findings, laboratory test anomalies, CSF analysis results, and the radiological images. Growth was observed in the CSF cultures of 10 out of the 57...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial meningitis; Culture; Speed-Oligo; PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200232

Draft genome analysis of Dietzia sp. 111N12-1, isolated from the South China Sea with bioremediation activity
Provedor de dados: 58
Autores: Yang,Shanjun; Yu,Mingjia; Chen,Jianming.
Abstract Dietzia sp. 111N12-1, isolated from the seawater of South China Sea, shows strong petroleum hydrocarbons degradation activity. Here, we report the draft sequence of approximately 3.7-Mbp genome of this strain. To the best of our knowledge, this is the first genome sequence of Dietzia strain isolated from the sea. The genome sequence may provide fundamental molecular information on elucidating the metabolic pathway of hydrocarbons degradation in this strain.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dietzia sp.; Actinomycetales; Bioremediation activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300393

Biotransformation of bromhexine by Cunninghamella elegans, C. echinulata and C. blakesleeana
Provedor de dados: 58
Autores: Dube,Aman K.; Kumar,Maushmi S.
Abstract Fungi is a well-known model used to study drug metabolism and its production in in vitro condition. We aim to screen the most efficient strain of Cunninghamella sp. among C. elegans, C. echinulata and C. blakesleeana for bromhexine metabolites production. We characterized the metabolites produced using various analytical tools and compared them with mammalian metabolites in Rat liver microsomes (RLM). The metabolites were collected by two-stage fermentation of bromhexine with different strains of Cunninghamella sp. followed by extraction. Analysis was done by thin layer chromatography, high performance thin layer chromatography, Fourier transform infrared spectroscopy, high performance liquid chromatography and Liquid chromatography–mass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cunninghamella sp.; Bromhexine; RLM; CYP3A4; Inhibitor; Metabolism.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200259

Adhesion and invasion of Clostridium perfringens type A into epithelial cells
Provedor de dados: 58
Autores: Llanco,Luis A.; Nakano,Viviane; Moraes,Claudia T.P. de; Piazza,Roxane M.F.; Avila-Campos,Mario J.
ABSTRACT Clostridium perfringens is the causative agent for necrotic enteritis. It secretes the major virulence factors, and α- and NetB-toxins that are responsible for intestinal lesions. The TpeL toxin affects cell morphology by producing myonecrosis, but its role in the pathogenesis of necrotic enteritis is unclear. In this study, the presence of netB and tpeL genes in C. perfringens type A strains isolated from chickens with necrotic enteritis, their cytotoxic effects and role in adhesion and invasion of epithelial cells were evaluated. Six (27.3%) of the 22 C. perfringens type A strains were harboring the tpeL gene and produced morphological alterations in Vero cells after 6 h of incubation. Strains tpeL (-) induced strong cell rounding after 6 h of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adhesion; Invasion; Clostridium perfringens type A; Necrotic enteritis; TpeL gene.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400764

Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
Provedor de dados: 58
Autores: Dong,Yuwei; Zhang,Yanqiu; Tu,Baojun.
Abstract Ammonia-oxidizing bacteria were immobilized by polyvinyl alcohol (PVA) and sodium alginate. The immobilization conditions and ammonia oxidation ability of the immobilized bacteria were investigated. The following immobilization conditions were observed to be optimal: PVA, 12%; sodium alginate, 1.1%; calcium chloride, 1.0%; inoculum concentration, 1.3 immobilized balls/mL of immobilized medium; pH, 10; and temperature, 30 °C. The immobilized ammonia-oxidizing bacteria exhibited strong ammonia oxidation ability even after being recycled four times. The ammonia nitrogen removal rate of the immobilized ammonia-oxidizing bacteria reached 90.30% under the optimal immobilization conditions. When compared with ammonia-oxidizing bacteria immobilized by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia-oxidizing bacteria; Immobilization; Polyvinyl alcohol; Sodium alginate; Ammonia oxidation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300515

Isolation and molecular characterization of Thraustochytrium strain isolated from Antarctic Peninsula and its biotechnological potential in the production of fatty acids
Provedor de dados: 58
Autores: Caamaño,Esteban; Loperena,Lyliam; Hinzpeter,Ivonne; Pradel,Paulina; Gordillo,Felipe; Corsini,Gino; Tello,Mario; Lavín,Paris; González,Alex R.
ABSTRACT Thraustochytrids are unicellular protists belonging to the Labyrinthulomycetes class, which are characterized by the presence of a high lipid content that could replace conventional fatty acids. They show a wide geographic distribution, however their diversity in the Antarctic Region is rather scarce. The analysis based on the complete sequence of 18S rRNA gene showed that strain 34-2 belongs to the species Thraustochytrium kinnei, with 99% identity. The total lipid profile shows a wide range of saturated fatty acids with abundance of palmitic acid (16:0), showing a range of 16.1-19.7%. On the other hand, long-chain polyunsaturated fatty acids, mainly docosahexaenoic acid and eicosapentaenoic acid are present in a range of 24-48% and 6.1-9.3%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thraustochytrids; Antarctic; Docosahexaenoic acid; Eicosapentaenoic acid; Temperature.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400671

Development of a novel compound microbial agent for degradation of kitchen waste
Provedor de dados: 58
Autores: Zhao,Kaining; Xu,Rui; Zhang,Ying; Tang,Hao; Zhou,Chuanbin; Cao,Aixin; Zhao,Guozhu; Guo,Hui.
Abstract Large quantities of kitchen waste are produced in modern society and its disposal poses serious environmental and social problems. The aim of this study was to isolate degradative strains from kitchen waste and to develop a novel and effective microbial agent. One hundred and four strains were isolated from kitchen waste and the 84 dominant strains were used to inoculate protein-, starch-, fat- and cellulose-containing media for detecting their degradability. Twelve dominant strains of various species with high degradability (eight bacteria, one actinomycetes and three fungi) were selected to develop a compound microbial agent "YH" and five strains of these species including H7 (Brevibacterium epidermidis), A3 (Paenibacillus polymyxa), E3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kitchen waste; Dominant strains; Degradative activity; Deodorization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300442

Technology and safety assessment for lactic acid bacteria isolated from traditional Bulgarian fermented meat product "lukanka"
Provedor de dados: 58
Autores: Todorov,Svetoslav Dimitrov; Stojanovski,Saso; Iliev,Ilia; Moncheva,Penka; Nero,Luis Augusto; Ivanova,Iskra Vitanova.
Abstract The present work discusses the technological and new selection criteria that should be included for selecting lactic acid bacteria for production of fermented meat. Lactic acid bacteria isolated from Bulgarian traditional fermented "lulanka" salami was studied regarding some positive technological parameters (growth at different temperature, pH, and proteolytic activity). The presence of genes related to the virulence factors, production of biogenic amines, and vancomycin resistance were presented in low frequency in the studied lactic acid bacteria. On the other hand, production of antimicrobial peptides and high spread of bacteriocin genes were broadly presented. Very strong activity against L. monocytogenes was detected in some of the studied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lukanka; Antibiotic resistance; Virulence factors; Lactic acid bacteria; Bacteriocins.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300576

The virulence of Streptococcus pneumoniae partially depends on dprA
Provedor de dados: 58
Autores: Yu,Yi; Chang,De; Xu,Huiwen; Zhang,Xuelin; Pan,Lei; Xu,Chou; Huang,Bing; Zhou,Hong; Li,Jia; Guo,Jun; Liu,Changting.
Abstract Streptococcus pneumoniae is one of the most frequent opportunistic pathogens worldwide. DNA processing protein A (DprA) is an important factor involved in bacterial uptake and DNA integration into bacterial genome, but its role in S. pneumoniae virulence remains unclear. The aim of this study was to characterize the effects of the pneumococcal dprA gene on the pathogenesis of S. pneumoniae. To construct a dprA-deficient pneumococcal strain, the dprA gene of the S. pneumoniae strain D39 was inactivated. The virulence of this dprA-deficient strain, designated ΔD39, was compared with that of the wild-type strain by evaluating their respective capabilities to adhere to human pulmonary epithelial cells (PEC-A549) and by analyzing their choline-binding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptococcus pneumoniae; DprA; Transformation; Virulence.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200225

Detection of Mycobacterium avium subsp. paratuberculosis in bovine milk from the state of Pernambuco, Brazil
Provedor de dados: 58
Autores: Albuquerque,Pedro Paulo Feitosa de; Santos,André de Souza; Souza Neto,Orestes Luiz de; Kim,Pomy de Cássia Peixoto; Cavalcanti,Erika Fernanda Torres Samico Fernandes; Oliveira,Júnior Mário Baltazar de; Mota,Rinaldo Aparecido; Pinheiro Júnior,José Wilton.
Abstract The aim of this study was to detect the IS900 region of Mycobacterium avium subsp. paratuberculosis (MAP) in bovine milk samples using real-time polymerase chain reaction (qPCR) and conventional PCR, and to study the agreement between these tests. A total of 121 bovine milk samples were collected from herds considered positive for MAP, from the State of Pernambuco, Brazil. MAP DNA was detected in 20 samples (16.5%) using conventional PCR and in 34 samples (28.1%) using qPCR. MAP DNA was detected in all of the 6 animal farms studied. Moderate agreement was found between qPCR and conventional PCR results, where the sensitivity and specificity of conventional PCR in relation to qPCR were 50% and 96.6%, respectively. Thus, the IS900 region of MAP was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molecular biology; Diagnosis; Paratuberculosis; Milk.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100113

Detection and analysis of different interactions between resistance mechanisms and carbapenems in clinical isolates of Klebsiella pneumoniae
Provedor de dados: 58
Autores: Dalmolin,Tanise Vendruscolo; Bianchini,Bianca Vendruscolo; Rossi,Grazielle Guidolin; Ramos,Ana Carolina; Gales,Ana Cristina; Trindade,Priscila de Arruda; Campos,Marli Matiko Anraku de.
Abstract Carbapenems are considered last-line agents for the treatment of serious infections caused by Klebsiella pneumoniae, and this microorganism may exhibit resistance to β-lactam antibiotics due to different mechanisms of resistance. We evaluated 27 isolates of K. pneumoniae resistant to carbapenems recovered from inpatients at the University Hospital of Santa Maria-RS from July 2013 to August 2014. We carried out antimicrobial susceptibility, carbapenemase detection, testing for the presence of efflux pump by broth microdilution and loss of porin by sodium dodecyl sulfate polyacrylamide gel electrophoresis. Genetic similarity was evaluated by ERIC-PCR. High levels of resistance were verified by the minimum inhibitory concentration for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Klebsiella pneumoniae; Carbapenemases; Loss of porins; Efflux pump.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300493

Screening and characterization of lactic acid bacterial strains that produce fermented milk and reduce cholesterol levels
Provedor de dados: 58
Autores: Guan,Xuefang; Xu,Qingxian; Zheng,Yi; Qian,Lei; Lin,Bin.
ABSTRACT  Objective To screen for and characterize lactic acid bacteria strains with the ability to produce fermented milk and reduce cholesterol levels.  Methods The strains were isolated from traditional fermented milk in China. In vitro and in vivo evaluation of cholesterol-reduction were used to identify and verify strains of interest. Characteristics were analyzed using spectrophotometry and plate counting assays.  Results The isolate HLX37 consistently produced fermented milk with strong cholesterol-reducing properties was identified as Lactobacillus plantarum (accession number: KR105940) and was thus selected for further study. The cholesterol reduction by strain HLX37 was 45.84%. The isolates were acid-tolerant at pH 2.5 and bile-tolerant at 0.5%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermented milk; Lactobacillus plantarum; Cholesterol; Rat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400730

Potential for biocontrol of melanized fungi by actinobacteria isolated from intertidal region of Ilha Do Mel, Paraná, Brazil
Provedor de dados: 58
Autores: Dalitz,Camila de Araújo; Porsani,Mariana Vieira; Figel,Izabel Cristina; Pimentel,Ida C.; Dalzoto,Patrícia R.
Abstract Actinobacteria occur in many environments and have the capacity to produce secondary metabolites with antibiotic potential. Identification and taxonomy of actinobacteria that produce antimicrobial substances is essential for the screening of new compounds, and sequencing of the 16S region of ribosomal DNA (rDNA), which is conserved and present in all bacteria, is an important method of identification. Melanized fungi are free-living organisms, which can also be pathogens of clinical importance. This work aimed to evaluate growth inhibition of melanized fungi by actinobacteria and to identify the latter to the species level. In this study, antimicrobial activity of 13 actinobacterial isolates from the genus Streptomyces was evaluated against seven...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Actinobacteria; Melanized fungi; Antimicrobial activity; 16S rDNA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100032

Efficacy and safety of a four-drug fixed-dose combination regimen versus separate drugs for treatment of pulmonary tuberculosis: a systematic review and meta-analysis
Provedor de dados: 58
Autores: Lima,Glaura C.; Silva,Emilia V.; Magalhães,Pérola de O.; Naves,Janeth S.
Abstract  Introduction: Tuberculosis, particularly multi-drug-resistant tuberculosis, is a major cause of morbidity and mortality worldwide. To the best of our knowledge, however, no study to date has assessed the combined use of the four available drugs for tuberculosis treatment, which is an issue of great clinical relevance.  Objective: To determine whether the four-drug fixed-dose combination is safer or more effective than separate drugs for treatment of pulmonary tuberculosis.  Methods: A systematic review of the literature was performed in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.  Results: In pooled results from five randomized controlled trials with 3502 patients across Africa, Asia, and Latin...
Tipo: Info:eu-repo/semantics/article
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200198

Antimicrobial resistance in Neisseria gonorrhoeae: history, molecular mechanisms and epidemiological aspects of an emerging global threat
Provedor de dados: 58
Autores: Costa-Lourenço,Ana Paula Ramalho da; Santos,Késia Thaís Barros dos; Moreira,Beatriz Meurer; Fracalanzza,Sergio Eduardo Longo; Bonelli,Raquel Regina.
ABSTRACT Neisseria gonorrhoeae is the agent of gonorrhea, a sexually transmitted infection with an estimate from The World Health Organization of 78 million new cases in people aged 15-49 worldwide during 2012. If left untreated, complications may include pelvic inflammatory disease and infertility. Antimicrobial treatment is usually effective; however, resistance has emerged successively through various molecular mechanisms for all the regularly used therapeutic agents throughout decades. Detection of antimicrobial susceptibility is currently the most critical aspect for N. gonorrhoeae surveillance, however poorly structured health systems pose difficulties. In this review, we compiled data from worldwide reports regarding epidemiology and antimicrobial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neisseria gonorrhoeae; Surveillance; Resistance mechanisms.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400617

Detection of vancomycin-resistant enterococci (VRE) in stool specimens submitted for Clostridium difficile toxin testing
Provedor de dados: 58
Autores: Özsoy,Sevim; İlki,Arzu.
Abstract The aim of this study was to determine the association between Clostridium difficile (C. difficile) and vancomycin-resistant Enterococcus (VRE) and efficacy of screening stools submitted for C. difficile toxin assay for prevalence of VRE. Between April 2012 and February 2014, 158 stool samples submitted for C. difficile toxin to the Marmara University Microbiology Laboratory, were included in the study. Stool samples were analyzed by enzyme immuno assay test; VIDAS (bioMerieux, France) for Toxin A&amp;B. Samples were inoculated on chromID VRE (bioMerieux, France) and incubated 24 h at 37 °C. Manuel tests and API20 STREP (bioMerieux, France) test were used to identify the Enterococci species. After the species identification, vancomycin and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clostridium difficile; Enterococci; Vancomycin resistance (VRE); Colonization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300489

High-temperature ethanol production using thermotolerant yeast newly isolated from Greater Mekong Subregion
Provedor de dados: 58
Autores: Techaparin,Atiya; Thanonkeo,Pornthap; Klanrit,Preekamol.
Abstract The application of high-potential thermotolerant yeasts is a key factor for successful ethanol production at high temperatures. Two hundred and thirty-four yeast isolates from Greater Mekong Subregion (GMS) countries, i.e., Thailand, The Lao People's Democratic Republic (Lao PDR) and Vietnam were obtained. Five thermotolerant yeasts, designated Saccharomyces cerevisiae KKU-VN8, KKU-VN20, and KKU-VN27, Pichia kudriavzevii KKU-TH33 and P. kudriavzevii KKU-TH43, demonstrated high temperature and ethanol tolerance levels up to 45 °C and 13% (v/v), respectively. All five strains produced higher ethanol concentrations and exhibited greater productivities and yields than the industrial strain S. cerevisiae TISTR5606 during high-temperature fermentation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermotolerant yeast; Box-Behnken experimental design; Response surface method; Ethanol production; Sweet sorghum juice (SSJ).
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300461

A novel expression vector for the secretion of abaecin in Bacillus subtilis
Provedor de dados: 58
Autores: Li,Li; Mu,Lan; Wang,Xiaojuan; Yu,Jingfeng; Hu,Ruiping; Li,Zhen.
ABSTRACT This study aimed to describe a Bacillus subtilis expression system based on genetically modified B. subtilis. Abaecin, an antimicrobial peptide obtained from Apis mellifera, can enhance the effect of pore-forming peptides from other species on the inhibition of bacterial growth. For the exogenous expression, the abaecin gene was fused with a tobacco etch virus protease cleavage site, a promoter Pglv, and a mature beta-glucanase signal peptide. Also, a B. subtilis expression system was constructed. The recombinant abaecin gene was expressed and purified as a recombinant protein in the culture supernatant. The purified abaecin did not inhibit the growth of Escherichia coli strain K88. Cecropin A and hymenoptaecin exhibited potent bactericidal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abaecin; Antimicrobial peptides; Bacillus subtilis; Expression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400809

Comparative study of Mycobacterium bovis primary isolation methods
Provedor de dados: 58
Autores: Issa,Marina de Azevedo; Soares Filho,Paulo Martins; Fonseca Júnior,Antônio Augusto; Hodon,Mikael Arrais; Santos,Lílian Cristian dos; Reis,Jenner Karlisson Pimenta dos; Cerqueira Leite,Rômulo.
Abstract For the definitive diagnosis of bovine tuberculosis, isolation of the etiologic agent is required. However, there is no consensus on the best methodology for isolation of Mycobacterium bovis in Brazil. This study evaluated the most used decontaminants and culture media in the country, in order to identify the best combination for the Brazilian samples. Three decontaminants - 2% sodium hydroxide (w/v), 0.75% hexadecylpiridinium chloride (w/v) and 5% sulphuric acid (v/v) and four culture media - 7H11 Middlebrook with additives and OADC supplement “A” (7H11 A), the same media with another supplement trademark (7H11 B), tuberculosis blood agar (B83) and Stonebrink's medium were compared. Regarding the isolation, there were no significant differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium bovis; Diagnosis; Middlebrook 7H11; Isolation; Sulphuric acid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100139

Grazing of particle-associated bacteria-an elimination of the non-viable fraction
Provedor de dados: 58
Autores: Gonsalves,Maria-Judith; Fernandes,Sheryl Oliveira; Priya,Madasamy Lakshmi; LokaBharathi,Ponnapakkam Adikesavan.
Abstract Quantification of bacteria being grazed by microzooplankton is gaining importance since they serve as energy subsidies for higher trophic levels which consequently influence fish production. Hence, grazing pressure on viable and non-viable fraction of free and particle-associated bacteria in a tropical estuary controlled mainly by protist grazers was estimated using the seawater dilution technique. In vitro incubations over a period of 42 h showed that at the end of 24 h, growth coefficient (k) of particle-associated bacteria was 9 times higher at 0.546 than that of free forms. Further, ‘k’ value of viable cells on particles was double that of free forms at 0.016 and 0.007, respectively. While bacteria associated with particles were grazed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria; Ciliates; Grazing; Particle; Protists; Viable.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100037

Antimicrobial activity evaluation and comparison of methods of susceptibility for Klebsiella pneumoniae carbapenemase (KPC)-producing Enterobacter spp. isolates
Provedor de dados: 58
Autores: Rechenchoski,Daniele Zendrini; Dambrozio,Angélica Marim Lopes; Vivan,Ana Carolina Polano; Schuroff,Paulo Alfonso; Burgos,Tatiane das Neves; Pelisson,Marsileni; Perugini,Marcia Regina Eches; Vespero,Eliana Carolina.
Abstract The production of KPC (Klebsiella pneumoniae carbapenemase) is the major mechanism of resistance to carbapenem agents in enterobacterias. In this context, forty KPC-producing Enterobacter spp. clinical isolates were studied. It was evaluated the activity of antimicrobial agents: polymyxin B, tigecycline, ertapenem, imipenem and meropenem, and was performed a comparison of the methodologies used to determine the susceptibility: broth microdilution, Etest® (bioMérieux), Vitek 2® automated system (bioMérieux) and disc diffusion. It was calculated the minimum inhibitory concentration (MIC) for each antimicrobial and polymyxin B showed the lowest concentrations for broth microdilution. Errors also were calculated among the techniques, tigecycline and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial activity; Enterobacter spp.; KPC; Methods of susceptibility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300509

Prevalence, serotyping and antimicrobials resistance mechanism of Salmonella enterica isolated from clinical and environmental samples in Saudi Arabia
Provedor de dados: 58
Autores: El-Tayeb,Mohamed A.; Ibrahim,Abdelnasser S.S.; Al-Salamah,Ali A.; Almaary,Khalid S.; Elbadawi,Yahya B.
Abstract Salmonella is recognized as a common foodborne pathogen, causing major health problems in Saudi Arabia. Herein, we report epidemiology, antimicrobial susceptibility and the genetic basis of resistance among S. enterica strains isolated in Saudi Arabia. Isolation of Salmonella spp. from clinical and environmental samples resulted in isolation of 33 strains identified as S. enterica based on their biochemical characteristics and 16S-rDNA sequences. S. enterica serovar Enteritidis showed highest prevalence (39.4%), followed by S. Paratyphi (21.2%), S. Typhimurium (15.2%), S. Typhi and S. Arizona (12.1%), respectively. Most isolates were resistant to 1st and 2nd generation cephalosporin; and aminoglycosides. Moreover, several S. enterica isolates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; Serotyping; Antibiotic resistance; Antimicrobials resistance determinants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300499

Captive wild birds as reservoirs of enteropathogenic E. coli (EPEC) and Shiga-toxin producing E. coli (STEC)
Provedor de dados: 58
Autores: Sanches,Lilian Aparecida; Gomes,Marcelo da Silva; Teixeira,Rodrigo Hidalgo Friciello; Cunha,Marcos Paulo Vieira; Oliveira,Maria Gabriela Xavier de; Vieira,Mônica Aparecida Midolli; Gomes,Tânia Aparecida Tardelli; Knobl,Terezinha.
ABSTRACT Psittacine birds have been identified as reservoirs of diarrheagenic Escherichia coli, a subset of pathogens associated with mortality of children in tropical countries. The role of other orders of birds as source of infection is unclear. The aim of this study was to perform the molecular diagnosis of infection with diarrheagenic E. coli in 10 different orders of captive wild birds in the state of São Paulo, Brazil. Fecal samples were analyzed from 516 birds belonging to 10 orders: Accipitriformes, Anseriformes, Columbiformes, Falconiformes, Galliformes, Passeriformes, Pelecaniformes, Piciformes, Psittaciformes and Strigiformes. After isolation, 401 E. coli strains were subjected to multiplex PCR system with amplification of genes eae and bfp...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diarrheagenic E. coli; Atypical EPEC; STEC; Avian diseases.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400760

Mapping of the continuous epitopes displayed on the Clostridium perfringens type D epsilon-toxin
Provedor de dados: 58
Autores: Alves,Guilherme Guerra; Machado-de-Ávila,Ricardo Andrez; Chávez-Olórtegui,Carlos Delfin; Silva,Rodrigo Otávio Silveira; Lobato,Francisco Carlos Faria.
Abstract The epsilon toxin, produced by Clostridium perfringens, is responsible for enterotoxemia in ruminants and is a potential bioterrorism agent. In the present study, 15 regions of the toxin were recognized by antibodies present in the serum, with different immunodominance scales, and may be antigen determinants that can be used to formulate subunit vaccines.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epsilon; Toxin; Enterotoxemia; Epitope; Mapping.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300570

Oral phaeohyphomycosis in a patient with squamocellular carcinoma of the lip: second case report
Provedor de dados: 58
Autores: Andrade,Suanni Lemos de; Leal,André Ferraz Goiana; Lacerda Filho,Armando Marsden; Macêdo,Danielle Patrícia Cerqueira; Lima,Maria do Carmo Carvalho de Abreu e; Neves,Rejane Pereira.
Abstract This communication reports the second known case of oral phaeohyphomycosis in a patient with squamocellular carcinoma of the lip. The patient, an 82-year-old black woman, a former smoker (for more than 30 years), suffering from an ulcerous vegetative lesion in the middle third of the lower lip for approximately 12 months. The result of the histopathological analysis indicated carcinoma, with well-differentiated keratinized squamous cells and the presence of septate mycelial filaments. In the direct mycological examination, thick and dematiaceous septate mycelial filaments were observed. After the resection surgery, the patient did not need to use an antifungal drug to treat the phaeohyphomycosis, and no follow-up radiotherapy was needed to treat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oral phaeohyphomycosis; Squamocellular carcinoma; Lip.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200208

Genome sequence of Bradyrhizobium embrapense strain CNPSo 2833T, isolated from a root nodule of Desmodium heterocarpon
Provedor de dados: 58
Autores: Delamuta,Jakeline Renata Marçon; Ribeiro,Renan Augusto; Gomes,Douglas Fabiano; Souza,Renata Carolini; Chueire,Ligia Maria Oliveira; Hungria,Mariangela.
Abstract Bradyrhizobium embrapense CNPSo 2833T is a nitrogen-fixing symbiont of the legume pasture Desmodium. Its draft genome contains 8,267,832 bp and 7876 CDSs. The symbiotic island includes nodulation and nitrogen fixation genes resembling the operon organization of B. japonicum. Several CDSs related to secretion proteins and stress tolerance were also identified.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological nitrogen fixation; Genome; Nodulation; Symbiosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100009

Genome-wide gene expression patterns in dikaryon of the basidiomycete fungus Pleurotus ostreatus
Provedor de dados: 58
Autores: Liu,Tianxiang; Li,Huiru; Ding,Yatong; Qi,Yuancheng; Gao,Yuqian; Song,Andong; Shen,Jinwen; Qiu,Liyou.
Abstract Dikarya is a subkingdom of fungi that includes Ascomycota and Basidiomycota. The gene expression patterns of dikaryon are poorly understood. In this study, we bred a dikaryon DK13 × 3 by mating monokaryons MK13 and MK3, which were from the basidiospores of Pleurotus ostreatus TD300. Using RNA-Seq, we obtained the transcriptomes of the three strains. We found that the total transcript numbers in the transcriptomes of the three strains were all more than ten thousand, and the expression profile in DK13 × 3 was more similar to MK13 than MK3. However, the genes involved in macromolecule utilization, cellular material synthesis, stress-resistance and signal transduction were much more up-regulated in the dikaryon than its constituent monokaryons. All...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Differential gene expression; Monoallelic expression; Monokaryon; RNA editing; RNA-Seq.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200380

Isolation and characterization of a novel endo-β-1,4-glucanase from a metagenomic library of the black-goat rumen
Provedor de dados: 58
Autores: Song,Yun-Hee; Lee,Kyung-Tai; Baek,Jin-Young; Kim,Min-Ju; Kwon,Mi-Ra; Kim,Young-Joo; Park,Mi-Rim; Ko,Haesu; Lee,Jin-Sung; Kim,Keun-Sung.
ABSTRACT The various types of lignocellulosic biomass found in plants comprise the most abundant renewable bioresources on Earth. In this study, the ruminal microbial ecosystem of black goats was explored because of their strong ability to digest lignocellulosic forage. A metagenomic fosmid library containing 115,200 clones was prepared from the black-goat rumen and screened for a novel cellulolytic enzyme. The KG35 gene, containing a novel glycosyl hydrolase family 5 cellulase domain, was isolated and functionally characterized. The novel glycosyl hydrolase family 5 cellulase gene is composed of a 963-bp open reading frame encoding a protein of 320 amino acid residues (35.1 kDa). The deduced amino acid sequence showed the highest sequence identity (58%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Black goats Endo-β-1; 4-glucanase Glycosyl hydrolase family 5 (GH5) Metagenomic library Rumen.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400801

Coprophilous Mucorales (ex Zygomycota) from three areas in the semi-arid of Pernambuco, Brazil
Provedor de dados: 58
Autores: Souza,Carlos Alberto Fragoso de; Lima,Diogo Xavier; Gurgel,Luciana M.S.; Santiago,André Luiz Cabral Monteiro de Azevedo.
Abstract Mucorales comprises fungi commonly isolated as saprobes from soil, dung, stored grains and plants. Although these fungi have been studied in several countries, there are relatively a few reports of them in semi-arid areas. Therefore, the aims of the present study were to assess and compare the Mucorales communities in dung from different species and breeds of herbivores in the semi-arid of Pernambuco, based on the frequency of occurrence and species richness of these fungi. Samples of dung collected in the cities of Arcoverde, Serra Talhada and Sertânia were incubated in moist chambers in triplicate. Altogether, 24 taxa of Mucorales distributed in the genera Absidia, Circinella, Cunninghamella, Lichtheimia, Mucor, Pilobolus, Rhizopus and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Dung; Herbivore; Mucoromycotina; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100079

Human leptospirosis: occurrence of serovars of Leptospira spp. in the state of Minas Gerais, Brazil, from 2008 to 2012
Provedor de dados: 58
Autores: Oliveira,Marluce Aparecida Assunção; Leal,Élida Aparecida; Correia,Max Assunção; Serufo Filho,José Carlos; Dias,Ricardo Souza; Serufo,José Carlos.
Abstract  Background: Leptospirosis is an infectious and acute disease caused by Leptospira spp. that have high epidemic potential. This study verified the main Leptospira spp. serovars detected by MAT from serum of patients with suspicion of leptospirosis from 2008 to 2012 in Minas Gerais State.  Methods: The laboratory received sera from 4654 patients. All serum were screened by IgM-ELISA according to the manufacturer's instructions. Each sample reactive or indeterminate were tested against twenty-four serovars of Leptospira by MAT.  Results: In this study, 597 patients were classified as reactive on MAT. Only 301 patients were confirmed by laboratory test. It was not possible confirmation by laboratory diagnosis of 296 patients. Among the samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leptospira; Serovar; Seroprevalence; Epidemiology; MAT.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300483

Draft genome sequence of a caprolactam degrader bacterium: Pseudomonas taiwanensis strain SJ9
Provedor de dados: 58
Autores: Hong,Sung-Jun; Park,Gun-Seok; Khan,Abdur Rahim; Jung,Byung Kwon; Shin,Jae-Ho.
Abstract Pseudomonas taiwanensis strain SJ9 is a caprolactam degrader, isolated from industrial wastewater in South Korea and considered to have the potential for caprolactam bioremediation. The genome of this strain is approximately 6.2 Mb (G + C content, 61.75%) with 6,010 protein-coding sequences (CDS), of which 46% are assigned to recognized functional genes. This draft genome of strain SJ9 will provide insights into the genetic basis of its caprolactam-degradation ability.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas taiwanensis; Bioremediation; Biodegradation; Caprolactam; Nylon.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200187

New production process of the antifungal chaetoglobosin A using cornstalks
Provedor de dados: 58
Autores: Jiang,Cheng; Song,Jinzhu; Zhang,Junzheng; Yang,Qian.
Abstract Chaetoglobosin A is an antibacterial compound produced by Chaetomium globosum, with potential application as a biopesticide and cancer treatment drug. The aim of this study was to evaluate the feasibility of utilizing cornstalks to produce chaetoglobosin A by C. globosum W7 in solid-batch fermentation and to determine an optimal method for purification of the products. The output of chaetoglobosin A from the cornstalks was 0.34 mg/g, and its content in the crude extract was 4.80%. Purification conditions were optimized to increase the content of chaetoglobosin A in the crude extract, including the extract solvent, temperature, and pH value. The optimum process conditions were found to be acetone as the extractant, under room temperature, and at a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chaetoglobosin A; Cornstalk; Purification; Stability; Chaetomium globosum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300410

Bioethanol strains of Saccharomyces cerevisiae characterised by microsatellite and stress resistance
Provedor de dados: 58
Autores: Reis,Vanda Renata; Antonangelo,Ana Teresa Burlamaqui Faraco; Bassi,Ana Paula Guarnieri; Colombi,Débora; Ceccato-Antonini,Sandra Regina.
Abstract Strains of Saccharomyces cerevisiae may display characteristics that are typical of rough-type colonies, made up of cells clustered in pseudohyphal structures and comprised of daughter buds that do not separate from the mother cell post-mitosis. These strains are known to occur frequently in fermentation tanks with significant lower ethanol yield when compared to fermentations carried out by smooth strains of S. cerevisiae that are composed of dispersed cells. In an attempt to delineate genetic and phenotypic differences underlying the two phenotypes, this study analysed 10 microsatellite loci of 22 S. cerevisiae strains as well as stress resistance towards high concentrations of ethanol and glucose, low pH and cell sedimentation rates. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Stresses; Yeasts; Microsatellite; Contaminants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200268

Predictive modeling of Pseudomonas fluorescens growth under different temperature and pH values
Provedor de dados: 58
Autores: Gonçalves,Letícia Dias dos Anjos; Piccoli,Roberta Hilsdorf; Peres,Alexandre de Paula; Saúde,André Vital.
Abstract Meat is one of the most perishable foods owing to its nutrient availability, high water activity, and pH around 5.6. These properties are highly conducive for microbial growth. Fresh meat, when exposed to oxygen, is subjected to the action of aerobic psychrotrophic, proteolytic, and lipolytic spoilage microorganisms, such as Pseudomonas spp. The spoilage results in the appearance of slime and off-flavor in food. In order to predict the growth of Pseudomonas fluorescens in fresh meat at different pH values, stored under refrigeration, and temperature abuse, microbial mathematical modeling was applied. The primary Baranyi and Roberts and the modified Gompertz models were fitted to the experimental data to obtain the growth parameters. The Ratkowsky...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meat; Deterioration; Modeling.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200352

Bioremediation of polycyclic aromatic hydrocarbon (PAH) compounds: (acenaphthene and fluorene) in water using indigenous bacterial species isolated from the Diep and Plankenburg rivers, Western Cape, South Africa
Provedor de dados: 58
Autores: Alegbeleye,Oluwadara Oluwaseun; Opeolu,Beatrice Olutoyin; Jackson,Vanessa.
Abstract This study was conducted to investigate the occurrence of PAH degrading microorganisms in two river systems in the Western Cape, South Africa and their ability to degrade two PAH compounds: acenaphthene and fluorene. A total of 19 bacterial isolates were obtained from the Diep and Plankenburg rivers among which four were identified as acenaphthene and fluorene degrading isolates. In simulated batch scale experiments, the optimum temperature for efficient degradation of both compounds was determined in a shaking incubator after 14 days, testing at 25 °C, 30 °C, 35 °C, 37 °C, 38 °C, 40 °C and 45 °C followed by experiments in a Stirred Tank Bioreactor using optimum temperature profiles from the batch experiment results. All experiments were run...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polycyclic aromatic hydrocarbons (PAHs); Bioremediation; Bioreactor; PAH degrading microorganisms.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200314

Variation analysis of bacterial polyhydroxyalkanoates production using saturated and unsaturated hydrocarbons
Provedor de dados: 58
Autores: Tufail,Saiqa; Munir,Sajida; Jamil,Nazia.
ABSTRACT Polyhydroxyalkanoates (PHA) are efficient, renewable and environment friendly polymeric esters. These polymers are synthesized by a variety of microbes under stress conditions. This study was carried out to check the suitability of waste frying oil in comparison to other oils for economical bioplastic production. Six bacterial strains were isolated and identified as Bacillus cereus (KF270349), Klebsiella pneumoniae (KF270350), Bacillus subtilis (KF270351), Brevibacterium halotolerance (KF270352), Pseudomonas aeruginosa (KF270353), and Stenotrophomonas rhizoposid (KF270354) by ribotyping. All strains were PHA producers so were selected for PHA synthesis using four different carbon sources, i.e., waste frying oil, canola oil, diesel and glucose....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Waste frying oil; Polyhydroxyalkanoates; Fluorescence microscopy; FTIR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400629

Selection, isolation, and identification of fungi for bioherbicide production
Provedor de dados: 58
Autores: Souza,Angélica Rossana Castro de; Baldoni,Daiana Bortoluzzi; Lima,Jessica; Porto,Vitória; Marcuz,Camila; Machado,Carolina; Ferraz,Rafael Camargo; Kuhn,Raquel C.; Jacques,Rodrigo J.S.; Guedes,Jerson V.C.; Mazutti,Marcio A.
Abstract Production of a bioherbicide for biological control of weeds requires a series of steps, from selection of a suitable microbial strain to final formulation. Thus, this study aimed to select fungi for production of secondary metabolites with herbicidal activity using biological resources of the Brazilian Pampa biome. Phytopathogenic fungi were isolated from infected tissues of weeds in the Pampa biome. A liquid synthetic culture medium was used for production of metabolites. The phytotoxicity of fungal metabolites was assessed via biological tests using the plant Cucumis sativus L., and the most promising strain was identified by molecular analysis. Thirty-nine fungi were isolated, and 28 presented some phytotoxic symptoms against the target plant....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioprospecting; Diaporthe; Bioproduct; Liquid fermentation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100101

Draft genome sequence of pectic polysaccharide-degrading moderate thermophilic bacterium Geobacillus thermodenitrificans DSM 101594
Provedor de dados: 58
Autores: Petkauskaite,Raimonda; Blom,Jochen; Goesmann,Alexander; Kuisiene,Nomeda.
Abstract Geobacillus thermodenitrificans DSM 101594 was isolated as a producer of extracellular thermostable pectic polysaccharide degrading enzymes. The completely sequenced genome was 3.6 Mb in length with GC content of 48.86%. A number of genes encoding enzymatic active against the high molecular weight polysaccharides of potential biotechnological importance were identified in the genome.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geobacilli; Polysaccharide degradation; Genome.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100007

Illumina-based analysis of endophytic bacterial diversity of tree peony (Paeonia Sect. Moutan) roots and leaves
Provedor de dados: 58
Autores: Yang,Ruixian; Liu,Ping; Ye,Wenyu.
ABSTRACT Diverse communities of bacteria inhabit plant tissues and those bacteria play a crucial role for plant health and growth. Tree peony (Paeonia Sect. Moutan) is known for its excellent ornamental and medicinal values as Chinese traditional plant, but little is known about its associated bacterial community under natural conditions. To examine how endophytic bacteria in tree peony vary across tissues and cultivars, PCR-based Illumina was applied to reveal the diversity of endophytic bacteria in tree peony. A total of 149,842 sequences and 21,463 operational taxonomic units (OTUs) were obtained. The OTU abundance of roots was higher than leaves across other three cultivars except for ‘Kinkaku’ and ‘Luoyanghong’. The community was composed of five...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paeonia Sect; Moutan; Endophytic bacteria; Biodiversity; Illumina Miseq.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400695

Draft genome sequence of Bradyrhizobium manausense strain BR 3351T, an effective symbiont isolated from Amazon rainforest
Provedor de dados: 58
Autores: Simões-Araújo,Jean Luiz; Rumjanek,Norma Gouvêa; Xavier,Gustavo Ribeiro; Zilli,Jerri Édson.
ABSTRACT The strain BR 3351T (Bradyrhizobium manausense) was obtained from nodules of cowpea (Vigna unguiculata L. Walp) growing in soil collected from Amazon rainforest. Furthermore, it was observed that the strain has high capacity to fix nitrogen symbiotically in symbioses with cowpea. We report here the draft genome sequence of strain BR 3351T. The information presented will be important for comparative analysis of nodulation and nitrogen fixation for diazotrophic bacteria. A draft genome with 9,145,311 bp and 62.9% of GC content was assembled in 127 scaffolds using 100 bp pair-end Illumina MiSeq system. The RAST annotation identified 8603 coding sequences, 51 RNAs genes, classified in 504 subsystems.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon forest; Biological nitrogen fixation; Next generation sequencing; Nodulation; Cowpea.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400610

Tricalcium phosphate solubilization and nitrogen fixation by newly isolated Aneurinibacillus aneurinilyticus CKMV1 from rhizosphere of Valeriana jatamansi and its growth promotional effect
Provedor de dados: 58
Autores: Chauhan,Anjali; Guleria,Shiwani; Balgir,Praveen P.; Walia,Abhishek; Mahajan,Rishi; Mehta,Preeti; Shirkot,Chand Karan.
Abstract Aneurinibacillus aneurinilyticus strain CKMV1 was isolated from rhizosphere of Valeriana jatamansi and possessed multiple plant growth promoting traits like production of phosphate solubilization (260 mg/L), nitrogen fixation (202.91 nmol ethylene mL-1 h-1), indole-3-acetic acid (IAA) (8.1 µg/mL), siderophores (61.60%), HCN (hydrogen cyanide) production and antifungal activity. We investigated the ability of isolate CKMV1 to solubilize insoluble P via mechanism of organic acid production. High-performance liquid chromatography (HPLC) study showed that isolate CKMV1 produced mainly gluconic (1.34%) and oxalic acids. However, genetic evidences for nitrogen fixation and phosphate solubilization by organic acid production have been reported first time...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Valeriana jatamansi; Phosphate solubilization; Nitrogen fixation; Glucose dehydrogenase; Aneurinibacillus aneurinilyticus; PGPR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200294

Draft genome sequence of a multidrug-resistant beta-lactamase OXA-357-producing Acinetobacter pittii ST865 clinical isolate from China
Provedor de dados: 58
Autores: Wang,Jianfeng; Chen,Yan; Wu,Liyan; Chen,Yu; Xu,Liqun.
Abstract Worldwide increasing emergence of carbapenem-resistant Acinetobacter spp. has rendered the limited availability of effective antimicrobial agents and has become a major public health concern. In this study, we report the draft genome sequence of A. pittii TCM156, a multidrug-resistant isolate that harbored the blaOXA-357 gene. The genome sequence was further analyzed by various bioinformatics methods. The genome size was estimated to be 3,807,313 bp with 3508 predicted coding regions and G + C content is 38.7%. These findings have raised awareness of the possible emergence of OXA-type enzyme-producing A. pittii isolate in China.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acinetobacter pittii; BlaOXA-357; Whole genome sequencing (WGS); Multidrug-resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200196

Draft genome sequence of alcohol-tolerant bacteria Pediococcus acidilactici strain K3
Provedor de dados: 58
Autores: Park,Gun-Seok; Hong,Sung-Jun; Park,Seulki; Jin,Hyewon; Lee,Sang-Jae; Shin,Jae-Ho; Lee,Han-Seung.
Abstract Pediococcus acidilactici strain K3 is an alcohol-tolerant lactic acid bacterium isolated from nuruk, which is a traditional Korean fermentation starter for makgeolli brewing. Draft genome of this strain was approximately 1,991,399 bp (G+C content, 42.1%) with 1525 protein-coding sequences (CDS), of which 44% were assigned to recognized functional genes. This draft genome sequence data of the strain K3 will provide insights into the genetic basis of its alcohol-tolerance.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pediococcus acidilactici; Makgeolli; Alcohol-tolerance; Ion torrent.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100001

Draft genome sequence of phenol degrading Acinetobacter sp. Strain V2, isolated from oil contaminated soil
Provedor de dados: 58
Autores: Sharma,Vikas; Lin,Johnson.
Abstract We report here the draft genome sequence of Acinetobacter sp. Strain V2 isolated from the oil contaminated soil collected from ENGEN, Amanzimtoti, South Africa. Degradation of phenolic compounds such as phenol, toluene, aniline etc. at 400 ppm in 24 h and oil degrading capability makes this organism an efficient multifunctional bioremediator. Genome sequencing of Acinetobacter spp. V2 was carried out on Illumina HiSeq 2000 platform (performed by the Beijing Genomics Institute [BGI], Shenzhen, China). The data obtained revealed 643 contigs with genome size of 4.0 Mb and G + C content of 38.59%.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acinetobacter; Phenol degradation; Whole genome sequencing; Oil contaminated soil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200189

Prevalence and serotype distribution of Listeria monocytogenes isolated from foods in Montevideo-Uruguay
Provedor de dados: 58
Autores: Braga,Valeria; Vázquez,Sylvia; Vico,Victoria; Pastorino,Valeria; Mota,María Inés; Legnani,Marcela; Schelotto,Felipe; Lancibidad,Gustavo; Varela,Gustavo.
ABSTRACT The aim of this work was to study the prevalence of Listeria monocytogenes in foods obtained in retail shops and food industries located in Montevideo-Uruguay, and to identify the serogroups of the obtained isolates. Three-thousand one-hundred and seventy-five food samples (frozen, deli meats, ready-to-eat and cheese) were analyzed. The obtained isolates were serogrouped by multiplex PCR and serotyped by conventional procedure. Genetic comparisons were performed using pulsed-field gel electrophoresis on a sub-set of isolates belonging to the same serotype successively recovered from the same establishment. L. monocytogenes was isolated from 11.2% of samples. The highest prevalence was observed in frozen foods (38%), followed by cheese (10%). 1/2b...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food-borne diseases; Listeriosis; Serotyping; Pulsed-field gel electrophoresis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400689

Molecular epidemiology of Streptococcus agalactiae isolated from mastitis in Brazilian dairy herds
Provedor de dados: 58
Autores: Carvalho-Castro,Glei A.; Silva,Juliana R.; Paiva,Luciano V.; Custódio,Dircéia A.C.; Moreira,Rafael O.; Mian,Glaucia F.; Prado,Ingrid A.; Chalfun-Junior,Antônio; Costa,Geraldo M.
Abstract Streptococcus agalactiae is one of the most common pathogens leading to mastitis in dairy herds worldwide; consequently, the pathogen causes major economic losses for affected farmers. In this study, multilocus sequence typing (MLST), genotypic capsular typing by multiplex polymerase chain reaction (PCR), and virulence gene detection were performed to address the molecular epidemiology of 59 bovine (mastitis) S. agalactiae isolates from 36 dairy farms located in the largest milk-producing mesoregions in Brazil (Minas Gerais, São Paulo, Paraná, and Pernambuco). We screened for the virulence genes bac, bca, bibA, cfb, hylB, fbsA, fbsB, PI-1, PI-2a, and PI-2b, which are associated with adhesion, invasion, tissue damage, and/or immune evasion....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Group B Streptococcus; Multilocus sequence typing; Genotypic capsular typing; Virulence genes; Bovine disease.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300551

Isolation, identification, and biocontrol of antagonistic bacterium against Botrytis cinerea after tomato harvest
Provedor de dados: 58
Autores: Shi,Jun-Feng; Sun,Chang-Qing.
ABSTRACT Tomato is one of the most important vegetables in the world. Decay after harvest is a major issue in the development of tomato industry. Currently, the most effective method for controlling decay after harvest is storage of tomato at low temperature combined with usage of chemical bactericide; however, long-term usage of chemical bactericide not only causes pathogen resistance but also is harmful for human health and environment. Biocontrol method for the management of disease after tomato harvest has great practical significance. In this study, antagonistic bacterium B-6-1 strain was isolated from the surface of tomato and identified as Enterobacter cowanii based on morphological characteristics and physiological and biochemical features combined...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antagonistic bacterium; Antifungal activity; Identification; Tomato.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400706

Effect of peracetic acid on biofilms formed by Listeria monocytogenes strains isolated from a Brazilian cheese processing plant
Provedor de dados: 60
Autores: Lee,Sarah Hwa In; Barancelli,Giovana Verginia; Corassin,Carlos Humberto; Rosim,Roice Eliana; Coppa,Carolina Fernanda Sengling Cebin; Oliveira,Carlos Augusto Fernandes de.
ABSTRACT This study aimed to investigate the effect of peracetic acid (PAA, 0.5%) on adherent cells of three strains of Listeria monocytogenes strains belonging to serotypes 4b and 1/2b that had been previously isolated from the environment of a Brazilian cheese plant. The assays were conducted using polystyrene microplates and stainless steel coupons and the adhered cells were treated with PAA for 60, 120 and 180 s. On stainless steel, biofilms were partially inactivated by PAA after 60 s and almost 100% of the cells were damaged within 180 s using epifluorescence microscopy with LIVE/DEAD® staining. On polystyrene microplates, PAA decreased (P&lt;0.05) biofilm biomass produced by the three L. monocytogenes isolates at 60 s, when compared with controls...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peracetic acid (PAA)/ biofilm/effects; L. monocytogenes; Dairy plants/Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300610

Relationship between oxidative stress and inflammation in peripheral and cerebral system of oxonate-induced hyperuricemic rats
Provedor de dados: 60
Autores: Jing,Wu; Zhong,Jia; Ping,Liang Jian; Yan,Liu Hong.
ABSTRACT To study what kind of role uric acid play on the relationship between oxidative Stress and inflammation in peripheral and cerebral system of oxonate-induced hyperuricemic rats. Twenty-six eight male Wistar rats were divided into two groups randomly. Potassium oxonate was used to establish hyperuricemic model for four weeks. In 2nd and 4th week, uric acid (UA) level, total superoxide dismutase (T-SOD), Gu,Zn-SOD activity and interleukin-1beta (IL-1β) concentration in serum were determined respectively. In 4th week, one hour after last PO treatment, five rats of every group were given Evans Blue to test blood-brain barrier (BBB) permeability. Other brains were obtained to analysis T-SOD, Gu,Zn-SOD activity and IL-1β concentration in cerebral system....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hyperuricemic Blood brain barrier Potassium oxonate Oxidative stress Inflammatory Total-SOD Gu; Zn-SOD IL-1β Pathological injury.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400620

Prevalence of potential drug-drug interactions in the intensive care unit of a Brazilian teaching hospital
Provedor de dados: 60
Autores: Rodrigues,Aline Teotonio; Stahlschmidt,Rebeca; Granja,Silvia; Pilger,Diogo; Falcão,Antonio Luis Eiras; Mazzola,Priscila Gava.
Abstract Patients in intensive care unit are prescribed large numbers of drugs, highlighting the need to study potential Drug-Drug Interactions in this environment. The aim of this study was to delineate the prevalence and risk of potential drug-drug interactions between medications administered to patients in an ICU. This cross-sectional observational study was conducted during 12 months, in an adult ICU of a teaching hospital. Inclusion criteria were: prescriptions with 2 or more drugs of patients admitted to the ICU for &gt; 24 hours and age of ≥18 years. Potential Drug-Drug Interactions were quantified and classified through MicromedexTM database. The 369 prescriptions included in this study had 205 different drugs, with an average of 13.04 ± 4.26...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Potential drug-drug interactions; Intensive care unit; Patient safety; University hospitals.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100624

4-Nerolidylcatechol induces autophagy in human glioblastoma cells
Provedor de dados: 60
Autores: Massaro,Renato Ramos; Brohem,Carla Abdo; Almeida,Rebeca Leite de; Rivelli,Diogo Pineda; Miyake,Juliano Andreoli; Colquhoun,Alison; Barros,Silvia Berlanga de Moraes; Maria-Engler,Silvya Stuchi.
ABSTRACT Gliomas account for the majority of primary malignant brain tumors and present invasive behavior into adjacent healthy tissue. While 4-NC had previously shown to induce apoptotic cell death in a melanoma model, for the glioma model described in this paper 4-NC is cytotoxic for the cells with the induction of the autophagic pathway. Trypan blue exclusion assay showed that 4-NC was cytotoxic in a dose-dependent manner for A172 and T98G cell lines. IC10 and IC50 values were at 32 µM and 41 µM for A172 and T98G respectively. Inhibition of cell proliferation was observed by total cell counts and by cell cycle analysis by flow cytometry, with cell cycle arrest of A172 and T98G cell lines respectively in the G1/G0 and S phases of the cell cycle. 4-NC...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 4-Nerolidylcatechol; Glioblastoma; Cytotoxicity; Autophagy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300618

Cost-consequence analysis of Pharmaceutical Care program for systemic arterial hypertension in the public health system in Brazil
Provedor de dados: 60
Autores: Cazarim,Maurílio de Souza; Nunes,Altacílio Aparecido; Pereira,Leonardo Régis Leira.
ABSTRACT In Brazil, 80% of hypertensive patients have no blood pressure controlled, this fact has caused severe financial consequences for the public health system (PHS) and the Pharmaceutical Care (PC) has emerged as an effective alternative. The aim of this study was to analyze the costs and outcomes of systemic arterial hypertension (SAH) for conventional assistance compared to assistance with PC in the PHS. This is a pharmacoeconomic study with cost-consequence analysis nested to clinical trial. Hypertensives patients were followed-up from 2006 to 2012. During 2009 they were assisted by the PC program in Ribeirão Preto-SP, Brazil. Clinical indicators, systolic and diastolic blood pressure (SBP and DBP), triglycerides, total cholesterol (TC) and its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmaceutical economics; Pharmaceutical services; Health Expenditures; Hypertension; Pharmaceutical care; Costs and cost analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300620

Synthesis and evaluation of platinum complexes with potential antitumor activity
Provedor de dados: 60
Autores: Freire,Rachel Lima Marcelino; Marques,Maria Betânia de Freitas; Souza-Fagundes,Elaine Maria de; Oliveira,Renata Barbosa de; Alves,Ricardo José.
Abstract A novel series of platinum (II) complexes was synthesized and the complexes were evaluated for their in vitro cytotoxicity against four human cancer cells lines. Five platinum complexes showed activity against at least one tumor cell line. Complexes 3 and 6 were promising, being active, at micromolar concentrations, against all the assayed tumor cell lines. Compound 3 was selected for further studies in mice with Ehrlich solid tumors and it was able to reduce the rate of tumor growth significantly during the first seven days. However, at the end of the experiments, there was no significant difference between the group of animals treated with 3 and the control group. The low solubility of the compound in the assay conditions can explain, at least...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: /Cytotoxic activity; Platinum complexes/ Ehrlich solid tumor activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100612

A simple HPLC method for the determination of halcinonide in lipid nanoparticles: development, validation, encapsulation efficiency, and  in vitro drug permeation
Provedor de dados: 60
Autores: Lopes,Clarissa Elize; Langoski,Gisele; Klein,Traudi; Ferrari,Priscileila Colerato; Farago,Paulo Vitor.
ABSTRACT Halcinonide is a high-potency topical glucocorticoid used for skin inflammation treatments that presents toxic systemic effects. A simple and quick analytical method to quantify the amount of halcinonide encapsulated into lipid nanoparticles, such as polymeric lipid-core nanoparticles and solid lipid nanoparticles, was developed and validated regarding the drug's encapsulation efficiency and in vitro permeation. The development and validation of the analytical method were carried out using the high performance liquid chromatography with the UV detection at 239 nm. The validation parameters were specificity, linearity, precision and accuracy, limits of detection and quantitation, and robustness. The method presented an isocratic flow rate of 1.0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Halcinonide/encapsulation efficiency; Halcinonide/quantification; Polymeric lipid-core nanoparticles; Solid lipid nanoparticles; Topical administration; Toxicity; High performance liquid chromatography/method validation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200604

Physical and chemical quality, biodiversity, and thermodynamic prediction of adhesion of bacterial isolates from a water purification system: a case study
Provedor de dados: 60
Autores: Alves,Roberta Barbosa Teodoro; Andrade,Nélio José de; Fontes,Edimar Aparecida Filomeno; Bernardes,Patrícia Campos; Carvalho,Antônio Fernandes de.
ABSTRACT The objective of this study was to evaluate the quality of water purification system and identify the bacteria this system, predict bacterial adherence according to the hydrophobicity of these microorganisms and of the polypropylene distribution loop for purified water. The assessment of drinking water that supplies the purification system allowed good-quality physical, chemical, and microbiological specifications. The physicochemical specifications of the distributed purified water were approved, but the heterotrophic bacteria count was higher than allowed (&gt;2 log CFU mL-1).The sanitation of the storage tank with chlorine decreased the number of bacteria adhered to the surface (4.34 cycles log). By sequencing of the 16SrDNA genes, six species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Purified water/quality; Purified water/adhesion; Purified water/bacterial biodiversity; Prediction thermodynamics; Hydrophobicity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200606

Formulation, preparation and in vitro - in vivo evaluation of compression-coated tablets for the colonic-specific release of ketoprofen
Provedor de dados: 60
Autores: Hales,Dana; Dumitrașcu,Dan Lucian; Tomuță,Ioan; Briciu,Corina; Muntean,Dana-Maria; Tefas,Lucia Ruxandra; Iurian,Sonia; Iovanov,Rareș Iuliu; Achim,Marcela; Vlase,Laurian.
ABSTRACT The aim of this study was to formulate and prepare compression-coated tablets for colonic release (CR-tablets), and to evaluate the bioavailability of ketoprofen following the administration of a single dose from mini-tablets with immediate release (IR-tablets) compared to CR-tablets. CR-tablets were prepared based on time-controlled hydroxypropylmethylcellulose K100M inner compression-coating and pH-sensitive Eudragit® L 30D-55 outer film-coating. The clinical bioavailability study consisted of two periods, in which two formulations were administered to 6 volunteers, according to a randomized cross-over design. The apparent cumulative absorption amount of ketoprofen was estimated by plasma profile deconvolution. CR-tablets were able to delay...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colonic delivery; Compression-coated tablets; PH-Dependent release; Time-dependent release; In vitro-in vivo comparison.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400609

Development of a new HPLC method for in vitro and in vivo studies of haloperidol in solid lipid nanoparticles
Provedor de dados: 60
Autores: Yasir,Mohd; Sara,Udai Vir Singh; Som,Iti.
ABSTRACT A simple and sensitive HPLC method was developed and validated for the quantification of haloperidol in solid lipid nanoparticles (SLNs). The developed method was used for detection of shelf life of haloperidol in SLNs. Calibration curve of haloperidol was also constructed in rat plasma using loratidine as internal standard. In vivo studies were performed on rats and concentration of haloperidol in brain and blood was measured for the determination of various pharmacokinetic and hence brain targeting parameters. Chromatogram separation was achieved using C18 column as stationary phase. The mobile phase consisted of 100 mM/L potassium dihydrogen phosphate-acetonitrile-TEA (10:90:0.1, v/v/v) and the pH was adjusted with o-phosphoric acid to 3.5....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Haloperidol/quantification; Haloperidol/pharmacokinetic; Haloperidol/in vitro study; Haloperidol/in vivo study; High performance liquid chromatography/solid lipid nanoparticles; Plasma; Validation; Brain targeting.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200623

Simultaneous determination of atorvastatin and ezetimibe from combined pharmaceutical products by micellar electrokinetic capillary chromatography
Provedor de dados: 60
Autores: Székely-Szentmiklósi,Blanka; Hancu,Gabriel; Székely-Szentmiklósi,István; Kovács,Béla; Kelemen,Hajnal.
Abstract A rapid and sensitive micellar electrokinetic capillary chromatography method with UV photodiode-array detection was developed for the simultaneous determination of atorvastatin and ezetimibe in fixed dose drug combination. Experimental conditions such as buffer concentration and pH, surfactant concentration, system temperature, applied voltage, injection parameters were optimized in order to improve the efficiency of the separation. The best results were obtained when using fused silica capillary (48 cm length X 50 µm ID) and 25 mM borate buffer electrolyte at pH 9.3 containing 25 mM SDS, + 30 kV applied voltage, 20 ºC system temperature. The separation was achieved in approximately 2 minutes, with a resolution of 7.02, the order of migration...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Micellar Electrokinetic Capillary Chromatography; Fixed Dose Drug Combination; Atorvastatin; Ezetimibe.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100626

Molecular docking, synthesis and in vitro antimalarial evaluation of certain novel curcumin analogues
Provedor de dados: 60
Autores: Dohutia,Chandrajit; Chetia,Dipak; Gogoi,Kabita; Bhattacharyya,Dibya Ranjan; Sarma,Kishore.
ABSTRACT The receptor protein PfATP6 has been identified as the common target of artemisinin and curcumin. The work was initiated to assess the antimalarial activity of six curcumin derivatives based on their binding affinities and correlating the in silico docking outcome with in vitro antimalarial screening results. A ligand library of thirty two Knoevenagel condensates of curcumin were designed and docked against PfATP6 protein and six compounds with the best binding scores were synthesized and screened for their antimalarial activity against the sensitive 3D7 strain of Plasmodium falciparum. ADME/Tox, pharmacokinetic and pharmacodynamic profiles of the designed compounds were analyzed and reported. 4-FB was found to have similar binding energy to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Curcumin/synthesis; Curcumin/antimalarial activity; Curcumin/Knoevenagel condensates; PfATP6; Malaria; Docking; In vitro; ADME/Tox.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400603

Inclusion complex of amiodarone hydrochloride with cyclodextrins: preparation, characterization and dissolution rate evaluation
Provedor de dados: 60
Autores: Rubim,Alexandre Machado; Rubenick,Jaqueline Bandeira; Maurer,Marcela; Laporta,Luciane Varini; Rolim,Clarice Madalena Bueno.
ABSTRACT This study aimed to improve the water solubility of amiodarone hydrochloride (AMH) via inclusion complexes with β-cyclodextrin, methyl-β-cyclodextrin and 2-hydroxypropyl-β-cyclodextrin. Inclusion complexes were developed by physical mixture, coevaporation, spray-drying and freeze-drying. Solid state analysis was performed using X-ray powder diffraction, differential scanning calorimetry and scanning electronic microscopy. Thermodynamic studies demonstrate that the inclusion complexes of drug into different cyclodextrins were an exothermic process that occurred spontaneously. Water solubility and drug dissolution rates were significantly increased after the formation of inclusion complexes with the cyclodextrins evaluated in relation to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amiodarone HCl/evaluation; Amiodarone HCl/solubility; Cyclodextrins/inclusion complexes; Cyclodextrins /thermodynamic studies; Dissolution rate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200607

Development and validation of stability indicating liquid chromatographic (RP-HPLC) method for estimation of ubidecarenone in bulk drug and formulations using quality by design (QBD) approach
Provedor de dados: 60
Autores: Muheem,Abdul; Shakeel,Faiyaz; Zafar,Sobiya; Jahangir,Mohammed Asadullah; Warsi,Musarrat Husain; Jain,Gaurav Kumar; Ahmad,Farhan Jalees.
ABSTRACT A novel, accurate, precise and economical stability indicating Reverse Phase-High Performance Liquid Chromatography (RP-HPLC) method, was developed and validated for the quantitative determination of ubidecarenone (UDC) in bulk drug, UDC marketed formulation and UDC loaded cubosomes (CBMs) nanocarriers through Response surface methodology (RSM) design with three factors and three levels was performed to optimize the chromatographic variables followed by forced degradation studies of UDC were performed to detect degradation peak. RP-HPLC separation was achieved using mobile phase consisting of Acetonitrile:Tetrahydrofuran:Deionised water in the ratio 55:42:3 and a flow rate of 1.0 mL/min was optimized with a standard retention time (Rt) of 2.15...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High Performance Liquid Chromatography/validation/stability; Response surface methodology (RSM); Ubidecarnenone (UDC)/evaluation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400614

Physical characterization of multiparticulate systems
Provedor de dados: 60
Autores: Issa,Michele Georges; Souza,Natalia Vieira de; Duque,Marcelo Dutra; Ferraz,Humberto Gomes.
ABSTRACT The search for new pharmaceutical dosage forms and different drug delivery systems already used in therapeutics is a global trend, serving as an opportunity to expand the portfolio for the pharmaceutical industry. In this context, multiparticulate systems, such as pellets, granules, and minitablets, represent an attractive alternative, given the range of possibilities they provide. Among the methods used in the production of these systems, we highlight the process of extrusion-spheronization for pellet manufacture, wet granulation and hot-melt extrusion for the obtention of granules, and direct compression for minitablets. Although highly versatile, depending on the technology chosen, many processes and formulation variables can influence the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multiparticulate systems/physical characterization; Pellets; Granules; Minitablets.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400403

Preclinical evaluation of nephroprotective potential of a probiotic formulation LOBUN on Cyclosporine-A induced renal dysfunction in Wistar rats
Provedor de dados: 60
Autores: Venkateswarlu,Kambham; Heerasingh,Thakur; Babu,Chilamakuru Naresh; Triveni,Singirisetty; Manasa,Suroju; Babu,Thumati Nagendra Bhaskar.
ABSTRACT The aim of present study was to evaluate the nephroprotective effect of probiotic formulation LOBUN on Cyclosporine A (CsA) induced renal dysfunction in Wistar rats. CsA (20 mg/kg body weight s.c) was administered for 15 days to cause renal dysfunction in Wistar rats. The probiotic formulation LOBUN was administered with the dose of 500 mg/kg body weight (p.o) for twice (TGI) and thrice a day (TGII). The samples were analyzed for the parameters like blood urine nitrogen (BUN), serum creatinine, serum uric acid, total serum protein and urine proteins, urine potassium, urine sodium. The renal functional and histopathological studies revealed that the oral administration of probiotic formulation LOBUN has provided appreciable renoprotection and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyclosporine-A; LOBUN/effects; LOBUN/effects/evaluation; Nephroprotective activity; Prebiotics; Probiotics; Chronic Kidney Disease/study.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200605

Preparation and physicochemical characterization of meloxicam orally fast disintegration tablet using its solid dispersion
Provedor de dados: 60
Autores: Shoormeij,Zahra; Taheri,Azade; Homayouni,Alireza.
ABSTRACT Meloxicam (MLX) is a non-steroidal, anti-inflammatory drug that is prescribed in the treatment of rheumatoid arthritis and osteoarthritis. MLX is practically insoluble in water and exhibits a slow onset of action. In this study, MLX solid dispersions (MLX SDs) were prepared to improve the water solubility of this poorly water-soluble drug. Then orally disintegrating tablets (ODT) of MLX were developed using MLX SD to decrease the onset of action of this drug. MLX, poloxamer 188, and crospovidone of different ratios were melted in molten poloxamer 188 as a hydrophilic carrier. The optimum SD with the highest saturation solubility in water (13.09±0.34 microgram/mL) consisting of MLX: poloxamer 188: crospovidone in the ratio of 1:2:0 was used for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meloxicam/physicochemical characterization; Meloxicam/onset of action; Solubility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400606

Development and validation of alternative methods by non-aqueous acid-base titration and derivative ultraviolet spectrophotometry for quantification of sildenafil in raw material and tablets
Provedor de dados: 60
Autores: Silva,Taízia Dutra; Toledo,Cibele Rodrigues; Vianna-Soares,Cristina Duarte.
Sildenafil citrate (SILC) is a potent phosphodiesterase-5 inhibitor used for erectile dysfunction and pulmonary hypertension. This study shows two simple, fast and alternative analytical methods for SILC determination by non-aqueous titration and by derivative ultraviolet spectrophotometry (DUS) in active pharmaceutical ingredient and/or dosage forms. The quantitation method of SILC active pharmaceutical ingredient by non-aqueous acid-base titration was developed using methanol as solvent and 0.1 mol/L of perchloric acid in acetic acid as titrant. The endpoint was potentiometrically detected. The non-aqueous titration method shows satisfactory repeatability and intermediate precision (RSD 0.70-1.09%). The neutralization reaction occurred in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sildenafil citrate; Vasodilator; Derivative ultraviolet spectrophotometry; Non-aqueous acid-base titrimetry; Sildenafil citrate/quality control.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100608

A comparative study of two separate analytical techniques for the simultaneous determination of diclofenac sodium and diacerein from combined dosage form
Provedor de dados: 60
Autores: Mallick,Sanhita Basu; Chattopadhyay,Helen; De,Amit Kumar; Datta,Sriparna.
ABSTRACT Diclofenac sodium (DS) and diacerein (DC) have emerged as a potential combination therapy for the treatment of knee osteoarthritis. Therefore a validated analytical method is essential for the simultaneous estimation of both from combined dosage form. A ratio derivative spectrophotometric and a chromatographic technique have been developed for the simultaneous determination of DS and DC. The quantification was done at 263.00 nm for DC and 304.50 nm for DS in the first method, whereas 257 nm for DC and at 274 nm for DS for LC-DAD analysis in chromatographic method using acetate buffer and methanol as the mobile phase at a flow-rate 0.50 mL/min. Both of these methods are found to be linear in the concentration range under study with r2 value 0.999...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diacerein/comparative study; Diclofenac sodium/comparative study; High Pressure Liquid Chromatography; LC-DAD; Ratio derivative spectroscopy/validation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200601

The in vivo effect of L-arginine on skin elasticity in mice
Provedor de dados: 60
Autores: Souza,Ádria do Prado Barros de; Oliveira,Marina Miranda Rocha de; Andrade,Rafael Rocha de; Amorim,Rivadávio Fernandes Batista de; Bocca,Anamélia Lonrezetti; Borin,Maria de Fátima.
ABSTRACT The human skin aging process is a complex mechanism that can be induced both by intrinsic and extrinsic factors. Observations include a decrease in the biosynthetic and proliferative capacity of cells, increased expression of matrix metalloproteinases, reduction in collagen type I expression, and the progressive disappearance of elastic tissue in the papillary dermis. L-arginine, the substrate of nitric oxide synthesis, is involved in angiogenesis and cell proliferation, as well as an indirect precursor of collagen synthesis via the proline pathway. The aim of this study was to examine the tensile strength, histology, and immunohistochemistry of female and male mice skin receiving different concentrations of topically applied L-arginine, in order...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: L-arginine; L-arginine/in vivo efficacy; Skin aging; Elastin; Collagen; INOS.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300615

Promotion of cutaneous penetration of nifedipine for nanoemulsion
Provedor de dados: 60
Autores: Arantes,Paula de Oliveira; Santos,Quesia Nery dos; Freitas,Zaida Maria Faria de; Pyrrho,Alexandre dos Santos; Cerqueira-Coutinho,Cristal; Villa,Ana Lucia Vazquez; Santos,Elisabete Pereira dos; Ricci-Júnior,Eduardo.
ABSTRACT This article reports the development and characterization of a nanoemulsion (NE) able to improve the cutaneous penetration of nifedipine. NE with nifedipine was development and characterized, presenting droplet size of 20 nm with low polydispersity index (IP&lt;0.1), spherical shape without aggregation, pH compatible with typical skin levels and stability evaluated by seven months. In the permeation studies, a classical formulation based in an oil/water cream containing nifedipine was used for comparison with NE. Nanoemulsion promoted and improved the retention of nifedipine in the epidermis and dermis in relation to classical formulation. This promoting effect is related to the nanometric size of the droplets of the NE (20 nm), which give him a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Topical nifedipine/cutaneous permeation; Nanoemulsion/characterization; Stability; Cutaneous permeation/study; Healing of wounds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200628

Volatile compounds and palynological analysis from pollen pots of stingless bees from the mid-north region of Brazil
Provedor de dados: 60
Autores: Lima Neto,José de Sousa; Lopes,José Arimatéia Dantas; Moita Neto,José Machado; Lima,Sidney Gonçalo de; Luz,Cynthia Fernandes Pinto da; Citó,Antônia Maria das Graças Lopes.
ABSTRACT Samburá is the botanical pollen nectar agglutinated by salivary secretions of bees. Stingless bee pollen samples were collected in three periods of the year in Monsenhor Gil town, PI, Brazil, for extraction of volatile constituents by different techniques, analyzed by gas chromatography-mass spectrometry (GC-MS) and the palynological analysis used to identify the dominant pollen. Among the volatile compounds identified, kaur-16-ene, methyl and ethyl hexadecanoate, methyl linoleate and heneicosane were identified more frequently in the studied parameters: period of sample collection and extraction techniques used. The palynological analysis identified the pollen of Mimosa caesalpiniifolia Benth. as the dominant pollen in all samples studied.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollen/Scaptotrigona sp; Mimosa caesalpiniifolia Benth; Pollen/volatile constituents; Chromatography-mass spectrometry; Palinology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200619

Evaluation of antimicrobial, cytotoxic and chemopreventive activities of carvone and its derivatives
Provedor de dados: 60
Autores: Moro,Isabela Jacob; Gondo,Gabrielle Demmany Gualberto Alexandre; Pierri,Elaíse Gonçalves; Pietro,Rosemeire Cristina Linharis Rodrigues; Soares,Christiane Pienna; Sousa,Damião Pergentino de; Santos,André Gonzaga dos.
ABSTRACT Considering the reported activity of carvone in the literature, this study aimed to evaluate the antimicrobial, cytotoxic and chemopreventive activities of (+)- and (-)-carvone, (+)- and (-)- hydroxydihydrocarvone and α,β-epoxycarvone. (+)-Hydroxydihydrocarvone (HC+), (-)-hydroxydihydrocarvone (HC-) and α,β-epoxycarvone (EP) were obtained by synthesis using (+)-carvone (C+) or (-)-carvone (C-) as precursors. The antifungal activity (MIC and MFC) were evaluated against Candida parapsilosis, C. tropicalis, C. krusei and C. albicans and the antibacterial activity (MIC and MBC) against Escherichia coli and Staphylococcus aureus. The cytotoxicity assays were performed with human cancer cell lines HepG-2 and SiHa and the normal strain MRC-5 through...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carvone/antimicrobial activity; Carvone/antifungal activity; Carvone /cytotoxicity; Carvone/chemoprevention.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400602

Effects of granule particle size and lubricant concentration on tablet hardness containing large concentration of polymers
Provedor de dados: 60
Autores: Rajani,Chauhan; Kumar,Dewangan Devendra; Jaya,Dwivedi; Kumar,Jha Arvind.
ABSTRACT The objective of this research work is to demonstrate the impact of granule size and lubricant concentration on the hardness of tablets in formulations containing higher concentration of polymers and to resolve the hardness issue during compression process. The work involves optimization of a milling process for size reduction of granules and blending process to achieve tablets of good hardness on compression. To optimize the granule size, different sized co-mill screens were used. The different concentration of lubricant were studied on different sized granules to check the effect on hardness of tablets and to obtained the desired hardness of tablets. Compression of lubricated blend in various concentration was performed using the gravity feeder...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tablet hardness/effects; Granule size; Lubricant concentration; Polymer.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300617

Grandisin induces apoptosis in leukemic K562 cells
Provedor de dados: 60
Autores: Cortez,Alane Pereira; Menezes,Elizabeth Gomes Paulino; Benfica,Polyana Lopes; Santos,Alexandre Pereira dos; Cleres,Larissa Moreira; Ribeiro,Higor de Oliveira; Lima,Eliana Martins; Kato,Massuo Jorge; Valadares,Marize Campos.
Abstract In this study, the potential antileukemic activity of grandisin, a lignan extracted from Piper solmsianum, was evaluated against the leukemic line K562. The cytotoxicity of grandisin (0.018 to 2.365 µM) was evaluated in K562 and normal peripheral blood lymphocytes by Trypan Blue Exclusion and MTT methods after 48h exposure to the drug. In both methods, cellular viability was concentration-dependent and the IC50 values were lower than 0.85µM. Analysis of K562 cells after treatment with grandisin showed that the cell cycle was arrested in the G1 phase with a 12.31% increase, while both S and G2 phases decreased. Morphological studies conducted after the exposure of K562 to grandisin revealed changes consistent with the apoptosis process, which was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grandisin/antileukemic activities; Leukemic; K562; Apoptosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100610

Investigation of the parameters affecting the release of flurbiprofen from chitosan microspheres
Provedor de dados: 60
Autores: Tilkan,Müşerref Günseli Yüksel; Özdemir,Nurten.
ABSTRACT Flurbiprofen (FLB), a NSAID, widely used for preventing pain generally for arthritis or dental problems. In this study, FLB loaded chitosan microspheres were prepared by ionotropic gelation method. In this method, microspheres were formed by dropping chitosan solutions containing FLB into sodium alginate solutions including sodium tripolyphosphate (TPP). A variety of formulation parameters like drug:polymer ratio, drug concentration, polymer’s molecular weight, polymer concentration, pH and the concentration of TPP solutions, drying method and stirring time were analyzed. The dissolution studies were performed in a shaking water bath in pH 7.4 phosphate buffer saline (PBS) at 37 °C. Laser diffractometer was used for particle size analysis, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flurbiprofen; Chitosan; Tripolyphosphate; Ionotropic gelation; Microsphere.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400621

Ameliorating the antitumor activity of lenalidomide using PLGA nanoparticles for the treatment of multiple myeloma
Provedor de dados: 60
Autores: Karri,Veera Venkata Satyanarayana Reddy; Dhandapani,Nagasamy Venkatesh; Mannemala,Sai Sandeep; Radhakrishna,Kollipara; Mulukutla,Shashank; Sudunagunta,Dedeepya.
Abstract Lenalidomide (LND) is an anti-cancer drug and an effective derivative of thalidomide used for multiple myeloma therapy. Because of its poor solubility in water, LND is known to cause low oral bioavailability (below 33%), and as a direct consequence of this, the dosing frequency is extended thus increasing risk of toxicity. To improve its bioavailability and sustained release, the present study aims to formulate polymeric nanoparticles (NPs) for LND using [Poly (lactic-co-glycolic acid)] (PLGA) as a polymer. The polymeric NPs were evaluated for particle size, SEM, XRD, drug content, entrapment efficiency (EE), in vitro release studies and in vivo bioavailability studies in rats. The formulated NPs possessed a size of 179±0.9 nm and a zeta potential...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multiple myeloma/treatment; Lenalidomide/uses; PLGA/sustained release; Polymeric nanoparticles/development; Solubility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200602

Development and validation of a stability indicating HPLC method to determine diltiazem hydrochloride in tablets and compounded capsules
Provedor de dados: 60
Autores: Souza,Mateus Araújo Castro e; Pereira,Carlos Eduardo de Oliveira; Nogueira,Fernando Henrique Andrade; Pianetti,Gerson Antônio.
ABSTRACT A stability indicating HPLC method to determine diltiazem hydrochloride (DTZ) in tablets and compounded capsules was developed and validated according to Brazilian and the International Conference on Harmonization (ICH) guidelines. The separation was carried out on a Purospher Star® C18 (150 x 4.6 mm i.d., 5 µm particle size, Merck Millipore) analytical column. The mobile phase consisted of a 0.05% (v/v) trifluoroacetic acid aqueous solution and a 0.05% trifluoroacetic acid methanolic solution (44:56, v/v). The flow rate was 1.0 mL.min-1 with a run time of 14 minutes. The detection of DTZ and degradation products (DP) was performed at 240 nm, using a diode array detector. The method proved to be linear, precise, accurate, selective, and robust,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diltiazem hydrochloride/compounded capsules; Diltiazem hydrochloride/tablets; High performance liquid chromatography /method validation; Stability indicating method.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300602

Preparation of mupirocin-loaded polymeric nanocapsules using essential oil of rosemary
Provedor de dados: 60
Autores: Rubenick,Jaqueline Bandeira; Rubim,Alexandre Machado; Bellé,Francieli; Nogueira-Librelotto,Daniele Rubert; Rolim,Clarice Madalena Bueno.
Abstract The purpose of this study was to prepare and characterize mupirocin-loaded polymeric nanocapsules using two different oils and to develop and validate an analytical method for quantitative determination by high performance liquid chromatography. The mean size of the nanoparticles was 233.05 nm and 275.03 nm for nanocapsules with a rosemary oil like oily core and caprylic/capric triglyceride, respectively, and a good polydispersity index below 0.25 for both formulations. The nanocapsules showed good stability when stored at 40 ºC and room temperature for 30 days. The quantitative method was performed with a mobile phase consisting of ammonium ammonium acetate (0.05 M adjusted to pH 5.0 with acetic acid) and acetonitrile 60:40 (v/v); the flow rate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mupirocin/High Performance Liquid Chromatography; Mupirocin/Polymeric nanocapsules; Rosemary oil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100623

Stability indicating RP-HPLC method for simultaneous determination of gatifloxacin and dexamethasone in binary combination
Provedor de dados: 60
Autores: Razzaq,Syed Naeem; Ashfaq,Muhammad; Khan,Islam Ullah; Mariam,Irfana; Razzaq,Syed Saleem; Mustafa,Ghulam; Zubair,Muhammad.
Abstract In this study, conditions were optimized for development of a simple RP-HPLC method for simultaneous analysis of gatifloxacin and dexamethasone in different matrices like pharmaceuticals, human serum and urine. Good separation of gatifloxacin and dexamethasone from the induced degradation products was accomplished using C8 as stationary phase; 0.02 M phosphate buffer (pH 3.0) and methanol (42:58 v/v) as mobile phase. The concentration was measured with DAD at 270 nm. Linearity was observed in the range of 0.000040-0.000280 mol/L for gatifloxacin (r2≥0.999) and 0.000013-0.000091 mol/L for dexamethasone (r2≥0.999). Both the analyte peaks were completely separated from the peaks of induced degradation products as indicated by the peak purity index...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gatifloxacin; Dexamethasone; High performance liquid chromatography; Validation; Plasma; Degradation products.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100607

Macromolecular confinement of therapeutic protein in polymeric particles for controlled release: insulin as a case study
Provedor de dados: 60
Autores: Guerreiro,Luiz Henrique; Silva,Daniel da; Girard-Dias,Wendell; Mascarenhas,Camile Moreira; Miranda,Kildare; Sola-Penna,Mauro; Ricci Júnior,Eduardo; Lima,Luís Mauricio Trambaioli da Rocha e.
ABSTRACT Sustained release systems for therapeutic proteins have been widely studied targeting to improve the action of these drugs. Molecular entrapping of proteins is particularly challenging due to their conformational instability. We have developed a micro-structured poly-epsilon-caprolactone (PCL) particle system loaded with human insulin using a simple double-emulsion w/o/w method followed by solvent evaporation method. This formulation is comprised by spheric-shaped microparticles with average size of 10 micrometers. In vitro release showed a biphasic behavior such as a rapid release with about 50% of drug delivered within 2 hours and a sustained phase for up to 48 h. The subcutaneous administration of microencapsulated insulin showed a biphasic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human insulin/study; Microparticles; Poly-ε-caprolactone; Therapeutic proteins/study/action; Proteins/molecular entrapping.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200622

Synthesis, antileishmanial activity and QSAR studies of 2-chloro- N -arylacetamides
Provedor de dados: 60
Autores: Lavorato,Stefânia Neiva; Duarte,Mariana Costa; Andrade,Pedro Henrique Rocha De; Coelho,Eduardo Antonio Ferraz; Alves,Ricardo José.
ABSTRACT We describe herein the synthesis and evaluation of the antileishmanial activity against promastigote forms of Leishmania amazonensis and cytotoxicity to murine macrophages of a series of 2-chloro-N-arylacetamide derivatives. All compounds were active, except one (compound 3). Compound 5 presented the most promising results, showing good antileishmanial activity (CI50=5.39±0.67 µM) and moderate selectivity (SI=6.36), indicating that further development of this class is worthwhile. Preliminary QSAR studies, although not predictive, furnished some insights on the importance of electronic character of aryl substituent to biological activity, as well as an indirect influence of hydrophobicity on activity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leishmaniasis/treatment; Chloroacetamides; Leishmania amazonensisChloroacetamides/QSAR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100620

Development of a mouse computational model for MCNPx based on Digimouse (r) images and dosimetric assays
Provedor de dados: 60
Autores: Mendes,Bruno Melo; Almeida,Iassudara Garcia de; Trindade,Bruno Machado; Fonseca,Telma Cristina Ferreira; Campos,Tarcísio Passos Ribeiro de.
ABSTRACT The aim of this study was to create and test a new mice 3D-voxel phantom named DM_BRA for mice and human first-estimation radiopharmaceutical dosimetry. Previously, the article reviews the state-of-art in animal model development. Images from Digimouse CT database were used in the segmentation and on the generation of the voxelized phantom. Simulations for validation of the DM_BRA model was performed at 0.015, 0.1, 0.5, 1 and 4 MeV photons with heart-source. Specific Absorbed Fractions (SAF) data were compared with literature data. The organ masses of DM_BRA correlated well with existing models based on the same dataset; however, few small organ masses hold significant variations. The SAF data in most simulated cases were statistically equal to a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dosimetry/assay; Mouse phantom/tests; MCNPx Monte Carlo code Computational studies.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100622

Cholesterol improves the transfection efficiency of polyallylamine as a non-viral gene delivery vector
Provedor de dados: 60
Autores: Oskuee,Reza Kazemi; Ramezanpour,Mahdieh; Gholami,Leila; Malaekeh-Nikouei,Bizhan.
ABSTRACT Cationic polymers such as polyallylamine (PAA) having primary amino groups are poor transfection agents and possess a high cytotoxicity index when used without any chemical modification. In this study, PAA was modified with cholesterol in order to improve transfection efficiency and to reduce cytotoxicity. PAA polymers with molecular weights of 15 and 65 kDa were selected and grafted with cholesterol at percentages of 5, 10, 15, 30, and 50. After purification, the efficacy of the synthetic vectors was evaluated in terms of DNA condensation using the ethidium bromide test, buffering capacity, particle size, zeta potential, transfection efficiency, and cytotoxicity assay in Neuro2A cell lines. According to the ethidium bromide test, these vectors...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cholesterol/ efficiency; Gene delivery; Non-viral vectors/evaluation; Polyallylamine Transfection efficiency; Cytotoxicity/study.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300612

Solid lipid nanoparticles of irbesartan: preparation, characterization, optimization and pharmacokinetic studies
Provedor de dados: 60
Autores: Soma,Deepthi; Attari,Zenab; Reddy,Meka Sreenivasa; Damodaram,Atmakuri; Koteshwara,Kunnatur Balasundara Gupta.
ABSTRACT Irbesartan is an antihypertensive with limited bioavailability and solid lipid nanoparticles (SLN) is one of the approaches to improve bioavailability. Solid lipid nanoparticles were prepared using glyceryl monostearate by solvent emulsification method followed by probe sonication. Irbesartan loaded SLNs were characterized and optimized by parameters like particle size, zeta potential, surface morphology entrapment efficiency and in vitro release. The optimized formulation was then further evaluated for the pharmacokinetic studies in Wistar rats. Irbesartan-loaded SLN of particle size 523.7 nm and 73.8% entrapment efficiency showed good bioavailability in Wistar rats and also showed optimum stability in the studies. The SLN prepared using glyceryl...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irbesartan/pharmacokinetics; Irbesartan/preparation; Irbesartan/bioavailability; Glyceryl monostearate; Solid lipid nanoparticles/characterization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100602

Quality indicators of pharmacists' services in community pharmacies in Paraná State, Brazil
Provedor de dados: 60
Autores: Hipólito Júnior,Edson; Halila,Gerusa Clazer; Reis,Walleri Christini Torelli; Guimarães,Matheus Murmel; Guanaes,Laís Danciguer; Pontarolo,Roberto; Correr,Cassyano Januário.
ABSTRACT Pharmacists and their pharmacies have been evolving in their roles as health promoters in Brazil. Some examples are the recent legislation reaffirming the role of Brazilian pharmacies as health institutions, rather than having only a commercial profile, giving greater clarity to pharmacists about their roles as health care providers. This evolution came with the recognition that is already seen in other developed countries, confirming the need for the pharmacist as a health promoter, and not simply a dispenser of drugs in society. This study has obtained the profile and activities of community pharmacists, as well as the quality indicators of private community pharmacies throughout the State of Paraná through the application of an online survey...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmaceutical care. Pharmacists/professional practice. Community pharmacy/structure indicators/Paraná State; Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100615

Intranasal mucoadhesivemicroemulsion for neuroprotective effect of curcuminin mptp induced Parkinson model
Provedor de dados: 60
Autores: Mandal,Snigdha Das; Mandal,Surjyanarayan; Patel,Jayvadan.
ABSTRACT This study was to investigate the neuroprotective effect of curcumin against inflammation-mediated dopaminergic neurodegeneration in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mice model of Parkinson's disease (PD). Curcumin loaded sodium hyaluronate based mucoadhesive microemulsion (CMME) was developed by using Box Behnken design of Response surface method (RSM) and was characterized. Male C57BL/6 mice were first treated with four intraperitoneal injections of MPTP (20 mg/kg of body weight) at 2 h intervals followed CMME intranasal administration for 14 days at 2.86 mg of curcumin/kg of body weight per once a day. Optimal CMME containing 3% Capmul MCM as oil phase, 37 % of Accenon CC and Transcutol HP at 2.5:1 ratio and 0.5% sodium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Curcumin/neuroprotective effect; Response surface methodology (RSM); Box-Behnken design; Sodium hyaluronate; Neurodegradation; Parkinson's disease/treatment; Male mice C57BL/6.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200621

Relationship between glycemic control and OPG gene polymorphisms with lower bone mineral density in patients with type 1 Diabetes mellitus
Provedor de dados: 60
Autores: Loureiro,Melina Bezerra; Ururahy,Marcela Abbott Galvão; Souza,Karla Simone Costa de; Oliveira,Yonara Monique da Costa; Silva,Heglayne Pereira Vital da; Bortolin,Raul Hernandes; Bezerra,João Felipe; Hirata,Rosario Dominguez Crespo; Maciel-Neto,José Jorge; Arrais,Ricardo Fernando; Almeida,Maria das Graças; Hirata,Mario Hiroyuki; Rezende,Adriana Augusto de.
ABSTRACT The aim of the present study was to investigate the bone mineral density (BMD) of patients with type 1 Diabetes mellitus (T1DM). We also assessed the association between osteoprotegerin (OPG) genetic polymorphisms and BMD. Genotyping was performed for 1181G&gt;C and 163A&gt;G OPG polymorphisms by allelic discrimination in 119 patients with T1DM and 161 normoglycemic (NG) individuals, aged 6 to 20 years old. Glycemic control, serum parameters of bone metabolism and BMD were evaluated. T1DM patients showed low BMD, poor glycemic control and decreased total calcium values when compared to controls (p &lt; 0.05). For all the polymorphisms studied, the genotype and allele frequencies in patients with T1DM were not significantly different from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Type 1 Diabetes mellitus/bone biomarkers; Bone mineral density; OPG polymorphism/children and adolescents.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400616

Development and validation of an analytical method using High Performance Liquid Chromatography (HPLC) to determine ethyl butylacetylaminopropionate in topical repellent formulations
Provedor de dados: 60
Autores: Pinto,Isadora Cabral; Cerqueira-Coutinho,Cristal; Freitas,Zaida Maria Faria de; Santos,Elisabete Pereira dos; Carmo,Flávia Almada do; Ricci Junior,Eduardo.
ABSTRACT Diseases caused by insects are frequent in poor countries, leading to epidemic scenarios in urban areas; e.g., Dengue, Zika and Chikungunya. For this reason, the development of a safe and efficient topical formulation is essential. Ethyl butylacetylaminopropionate (EB) is a mosquito repellent developed by Merck, which is used in products for adults, children and especially babies, due to its low allergenic potential. The aim of this work was to validate an analytical methodology to quantify EB in a new poloxamer-based formulation by high-performance liquid chromatography (HPLC). The quantification methodology was performed at 40 ºC using a Kromasil reverse-phase column (C18), with the dimensions of 250 x 4.6 mm. The mobile phase was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethyl butylacetylaminopropionate (EB)/quantification; Ethyl butylacetylaminopropionate (EB)/topical formulations; Analytical method; Validation; Repellents; Prophylaxis; High Performance Liquid Chromatography.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200613

Application of HPLC-DAD for the quantification of Lycorine in Galanthus elwesii Hook
Provedor de dados: 60
Autores: Emir,Ahmet; Emir,Ceren; Bozkurt,Buket; Onur,Mustafa Ali; Somer,Nehir Unver; Kaya,Gulen Irem.
ABSTRACT In the present study, a reversed-phase high-performance liquid chromatographic method has been used for the quantitative determination of lycorine in the aerial parts and bulbs of G. elwesii Hook. A simple method for the extraction of lycorine in low mass plant samples was employed utilizing pre-packed columns with diatomaceous earth (Extrelut(r)). The chromatographic separation was performed using an isocratic system with a mobile phase of trifluoroacetic acid-water-acetonitrile (0.01:92.5:7.5, v/v/v) applied at a flow rate 1 mL min-1 using diode array detector. The content of lycorine in the bulbs and aerial parts of G. elwesii collected from Demirci (Manisa) was found as 0.130 and 0.162 %, respectively. Additionally, in the bulbs of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkaloids; Amaryllidaceae; Plant extracts; High Performance Liquid Chromatography/method validation; High Perfomance Liquid Chromatography/quantitative analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100603

Vitamin K: content in food consumed in São Paulo, Brazil
Provedor de dados: 60
Autores: Faria,Simone Aparecida dos Santos Conceição; Arruda,Vanilda Aparecida Soares de; Araújo,Elias da Silva; Penteado,Marilene De Vuono Camargo.
ABSTRACT Recent research on Vitamin K has shown its importance in maintaining vascular and bone health. Brazilian food composition tables do not show phylloquinone content in national foods. These data are needed to obtain more reliable results in nutritional status assessment studies of individuals in relation to this vitamin as studies have shown a geographical influence in food phylloquinone content. This study aims to determine phylloquinone (Vitamin K1) levels in its most important source: dark green leaved vegetables. Several varieties of vegetables were purchased directly from CEAGESP (General Warehouse Company of São Paulo) at different times. Phylloquinone was extracted using organic solvents and quantified by High Performance Liquid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phylloquinone/determination/leaf vegetables; Food composition; High Performance Liquid Chromatography; Vitamin K/study/Brazil; Cooking/Loss.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200603

Association between kidney function and Framingham risk score in an admixed population of Brazil
Provedor de dados: 60
Autores: Costa,Brunna Soares Rodrigues; Freitas,Erika Paula Silva; Cruz,Marina Sampaio; Duarte,Victor Hugo Rezende; Silva,Ananília Medeiros Gomes da; Santos,Isabelle Cristina Clemente dos; Santos,Jéssica Cavalcante dos; Rezende,Adriana Augusto; Sena-Evangelista,Karine Cavalcanti Maurício; Silbiger,Vivian Nogueira.
ABSTRACT Chronic kidney disease (CKD) increases cardiovascular disease (CVD) risk development. However, the mechanisms of reduced kidney function with CVD risk are unclear. This study aimed to investigate the association between kidney function and Framingham risk score (FRS) in participants with traditional cardiovascular risk factors and normal estimated glomerular filtration rate (eGFR) &gt; 60 mL/min/1.73 m² in an admixed population of Brazil. The participants were divided into three groups according to FRS: low risk group with 0% to &lt;10%, moderate risk group with ≥10% to 20% and high risk group with &gt;20%. The eGFR was calculated using Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI). Data from participants were collected by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronic kidney disease; Cardiovascular diseases/risk factors; Glomerular filtration rate; Framingham risk score (FRS).
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300626

In vitro intestinal permeability studies, pharmacokinetics and tissue distribution of 6-methylcoumarin after oral and intraperitoneal administration in Wistar rats
Provedor de dados: 60
Autores: Cárdenas,Paola Andrea; Kratz,Jadel Müller; Hernández,Aura; Costa,Geison Modesti; Ospina,Luis Fernando; Baena,Yolima; Simões,Cláudia Maria Oliveira; Jimenez-Kairuz,Álvaro; Aragon,Marcela.
ABSTRACT 6-Methylcoumarin (6MC) is a semisynthetic coumarin with important in vitro and in vivo anti-inflammatory activity. In order to continue the pre-clinical characterization of this molecule, in vitro intestinal permeability, plasma profile and tissue distribution after oral administration in rats were studied. The permeability of 6MC was evaluated by the Caco-2 cellular model in both the apical-basal (A-B) and basal-apical (B-A) directions. The pharmacokinetics and biodistribution were evaluated in rats after oral and intraperitoneal administration at doses of 200 mg/kg. Transport experiments with Caco-2 cells showed that 6MC presented high permeability at all concentrations evaluated. This finding suggested that 6MC could be transported across the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 6-Methylcoumarin/Pharmacokinetics/rats; 6-Methylcoumarin/distribution; Intestinal permeability/study; Intestinal permeability/study/In vitro.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100621

Dermocosmetic care for rosacea
Provedor de dados: 60
Autores: Gonçalves,Maria Manuel Baía de Melo Magalhães; Pina,Maria Eugénia Soares Rodrigues Tavares de.
ABSTRACT Rosacea is a chronic inflammatory skin disease that primarily affects the central area of the face; it is characterized by erythema, papules, pustules, nodules, and telangiectasia. This condition arises between 30-60 years of age, and it usually occurs in fair-skinned people. Rosacea is characteristic of sensitive skin, as it is a disease marked with punctuated phases of exacerbated signs and symptoms that alternate with periods of remission. Humans have long incorporated cosmetics in their daily habits; given the scientific and technological developments that emerged in cosmeceuticals or dermocosmetics, the current cosmetic options are now used for much more than adornment or cleansing. The purpose of cosmetic care in rosacea is to restore the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rosacea/dermocosmetic treatment; Quality of life; Cosmetics; Cosmeceuticals; Skin care; Pharmacist advice.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400401

Decades of research in drug targeting using gastroretentive drug delivery systems for antihypertensive therapy
Provedor de dados: 60
Autores: Porwal,Amit; Dwivedi,Harinath; Pathak,Kamla.
ABSTRACT The limitations in absorption of drugs with narrow absorption window, or those unstable in the intestinal pH or those exhibiting low solubility at high pH are primary candidates for gastroretentive drug delivery systems (GRDDS). The delivery system has been widely explored for its commercial potential for a wide variety of therapeutic agents. GRDDS offer clinical therapeutics for acute and chronic management. Hypertension is a chronic disease that requires long term treatment and its management by patient compliant dosage forms would be clinically useful. Antihypertensives belonging to different classes have proved good candidates for the formulation of GRDDS. The review aims to discuss various GRDDS researched for antihypertensive drugs to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antihypertensive drugs; Gastroretention delivery systems/absorption; Floating systems; Expanding and swelling systems; Bio/mucoadhesive systems.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300401

Metabolic analysis of the effect of rheum on a taurocholate-induced acute pancreatitis rat model
Provedor de dados: 60
Autores: Chen,Zhonghua; Shen,Li; Yang,Changyong; Jiang,Jinghui; Liu,Xing.
ABSTRACT The effects of rheum on serum parameters in a taurocholate-induced acute pancreatitis (AP) rat model were investigated using pathological and biochemical tests, and a proton nuclear magnetic resonance (1H NMR)-based metabonomic strategy. Healthy rats and rats with AP were either treated with rheum (7.5% at a dose of 1.5 g/kg) or left untreated. Serum samples were collected from the AP and rheum-treated groups at 6, 12, and 24 h after treatment. The effect of rheum on pathological changes in the pancreatic was investigated to validate the AP model. We obtained 1H NMR spectra and analyzed the results using the partial least squares discriminant method. The results of the pathological and metabolic analyses revealed an amelioration of multiple...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rheum/effects; Acute pancreatitis/analysis; Metabolomics; 1H NMR; Pathological changes; Rats.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200633

Synthesis, characterization and biological activity of a gold(I) triazenide complex against chronic myeloid leukemia cells and biofilm producing microorganisms
Provedor de dados: 60
Autores: Nunes,Melise Silveira; Garzon,Litiérri Razia; Rampelotto,Roberta Filipini; Tizotti,Maísa Kräulich; Martini,Rosiéli; Locatelli,Aline; Barbosa,Marcelo; Hörner,Manfredo; Hörner,Rosmari.
ABSTRACT The enhancement of anti-leukemia therapy and the treatment of infections caused by multidrug-resistant pathogens are major challenges in healthcare. Although a large arsenal of drugs is available, many of these become ineffective, and as a result, the discovery of new active substances occurs. Notably, triazenes (TZCs) have been consolidated as a promising class of compounds, characterized by significant biological activity, especially antiproliferative and antimicrobial properties. The aim of this study is the synthesis and characterization of a new triazenide complex of gold (I), as well as the in vitro assessment of its antiproliferative activity against the K562 cell line (Chronic Myeloid Leukemia), and antibacterial activity against bacterial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triazenes/synthesis/characterization/biological activity; TZC/Gold ion complexed; Chronic myeloid leukemia; Antibacterial activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400617

Cytotoxicity of hydroxydihydrobovolide and its pharmacokinetic studies in  Portulaca oleracea L. extract
Provedor de dados: 60
Autores: Xu,Liang; Tao,Xiaojun; Gao,Yucong; Zhang,Wenjie; Meng,Yihan; Li,Cuiyu; Jiang,Mingyue; Xixiang,Ying.
ABSTRACT Hydroxydihydrobovolide (HDB) was for the first time isolated from Portulaca oleracea L. and then its cytotoxicity against SH-SYTY cells was studied. Moreover, a rapid and sensitive ultra-high performance liquid chromatographic (UHPLC) method with bergapten as internal standard (IS) was developed and validated to investigate the pharmacokinetics of HDB in rats after intravenous and oral administrations of extract (POE). The UHPLC analysis was performed on a Diamonsil C18 analytical column, using acetonitrile-water (35:65, v/v) as the mobile phase with UV detection at 220 nm. The calibration curve was linear over the range of 0.2-25 µg/mL in rat plasma. The average extraction recovery was from 90.1 to 98.9%, and the relative standard deviations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Portulaca oleracea L./hydroxydihydrobovolide; Portulaca oleracea L./hydroxydihydrobovolide/cytotoxicity; Portulaca oleracea L./hydroxydihydrobovolide/pharmacokinetics; Hydroxydihydrobovolide/Ultra-high performance liquid chromatography.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200615

Cross-cultural adaptation of Hypertension Knowledge Test into European Portuguese
Provedor de dados: 60
Autores: Cabral,Ana C.; Moura-Ramos,Mariana; Castel-Branco,Margarida; Caramona,Margarida; Fernandez-Llimos,Fernando; Figueiredo,Isabel V.
ABSTRACT We aim to validate a European-Portuguese version of the Hypertension Knowledge Test (HKT) questionnaire and examine its factorial structure with a confirmatory factor analysis (CFA). A process of translation and back-translation was performed. A cross-sectional study was developed in which all adult patients taking at least one antihypertensive drug were invited to participate. Data on personal and family history were collected, and the HKT, Strelec, and the Batalla questionnaires were administered. We enrolled 304 patients with a mean age of 68.12±10.83 years. The mean score of HKT was 15.33±2.79. CFA indicated that the construct being tested was unidimensional, and Cronbach’s alpha (α=0.65) showed that the instrument had an acceptable internal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Health Knowledge/attitudes/practice; Hypertension/prevention and control; Psychometrics; Surveys and questionnaires/standards; Portugal.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400608

Unsymmetrically substituted imidazolium salts: synthesis, characterization and antimicrobial activity
Provedor de dados: 60
Autores: Çoban,Esin Poyrazoğlu; Fırıncı,Rukiye; Biyik,Halil; Günay,Muhammet Emin.
ABSTRACT Unsymmetrically substituted imidazolium salts were synthesized and characterized using 1H-NMR and 13C-NMR. The antimicrobial activities of the salts were evaluated using the agar-well diffusion method against 14 bacteria and five yeasts. The minimal inhibitory concentrations (MIC) against seven bacteria and one yeast were also determined. Among the test compounds applied, 1, 2, 3, 6 and 11 showed activities against Micrococcus luteus ATCC 9341, Staphylococcus aureus ATCC 25923, Staphylococcus epidermidis ATCC 12228, Bacilllus cereus ATCC 11778, Bacillus subtilis ATCC 6633, Bacillus thuringiensis, Listeria monocytogenes ATCC 19112 and Candida trophicalis. However, compounds 1, 2 and 3 showed the highest antimicrobial activities against Micrococcus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Imidazolium salts/characterization; N-heterocyclic carbenes; Imidazolium salts/antimicrobial activity; Imidazolium salts/Minimum inhibitory concentration.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100604

Anti-inflammatory and healing action of oral gel containing borneol monoterpene in chemotherapy-induced mucositis in rats ( Rattus norvegicus )
Provedor de dados: 60
Autores: Nascimento-Júnior,Braz José do; Brito,Lucas de Souza; Barros,Walquíria Nunes; Gonçalves,Daniela Marques; Matos,Luana de Souza; Nascimento,Cínthia Reyjane Borges; Ribeiro,Luciano Augusto de Araújo; Lima,Ricardo Santana de; Silva-Júnior,René Geraldo Cordeiro; Reis,Sílvio Alan Gonçalves Bomfim; Gonçalves,Talita Mota; Amorim,Elba Lúcia Cavalcanti de.
ABSTRACT The aim of this study was to investigate the effect of gels containing the monoterpene borneol in induced oral mucositis using an animal model. Gels were prepared with borneol at 1.2% and 2.4% (w/w). Oral mucositis was induced by administration of three doses of 5-fluorouracil (30 mg/kg, i.p.) and injury with acetic acid (50%, v/v) soaked in filter paper applied to right cheek mucosa for 60s. Four subgroups comprising 12 animals each were formed. Six animals from each group were sacrificed at days seven and fourteen after oral mucositis induction. Mucous samples were processed and stained with hematoxylin-eosin and Masson’s Trichrome. The semiquantitative evaluation involved observation of inflammatory parameters. ImageJ® software was used in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemotherapy; Oral gel/Borneol monoterpene/effects; Oral gel/Borneol monoterpene/action anti-inflammatory; Oral gel/Borneol monoterpene/healing action; Bornyl alcohol/effects; Palliative care.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300604

Purchase of prescription and OTC medicines in Slovakia: factors influencing patients' expectations and satisfaction
Provedor de dados: 60
Autores: Haramiova,Zuzana; Kobliskova,Zuzana; Soltysova,Jurina.
ABSTRACT Slovakia is a country where the purchase of OTC (over the counter) medicines outside the pharmacy is not allowed by the government. This study aimed at evaluating patients' satisfaction and acceptance of community pharmacists. Customer's behaviour and expectations influencing the purchase of prescription and OTC medicines were analyzed. A structured questionnaire having 15 multiple-choice questions was used to analyze the descriptive parameters. Data collection lasted from January to February 2014. The sample size consisted of 357 high-school educated individuals under 40 years of age. The survey showed that the prescription and OTC medicines were bought equally. The participants reported a 96.0%, 96.3% and 90.2% satisfaction rate with willingness...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmaceutical Care/study/Slovakia; Community Pharmacy/Slovakia; Community Pharmacists/study/Slovakia; Patients/use of medicines; Patient satisfaction; Patient expectation; Medicines/prescription medicines.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100617

Analysis of the presence of FLT3 gene mutation and association with prognostic factors in adult and pediatric acute leukemia patients
Provedor de dados: 60
Autores: Burnatt,Graciele; Licínio,Marley Aparecida; Gaspar,Pâmela Cristina; Ferreira,Arthur Schveitzer; Reis,Manoela Lira; Moraes,Ana Carolina Rabello de; Sincero,Thaís Cristine Marques; Santos-Silva,Maria Cláudia.
ABSTRACT When the FLT3 gene is mutated, it originates a modified receptor with structural changes, which give survival advantage and malignant hematopoietic cell proliferation. Thus, the presence of mutations in this gene is considered an unfavorable prognostic factor. A total of 85 consecutive samples of newly diagnosed untreated patients with AL were included in the study after they provided their informed consent. FLT3 gene mutations were detected by PCR. For the pediatric group, a positive correlation was observed between WBC count and the presence of FLT3-ITD in patients with AML and ALL. Furthermore, children with AML who had the FLT3-ITD mutation showed a tendency to express CD34 in blast cells. In the adult group, the AML patients with FLT3-ITD who...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: FLT3-ITD/mutation; Acute leucemia/prognostic factors; Acute leucemia/adults patients; Acute leucemia/pediatric patients; AML; ALL; FLT3-D835.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200617

Metronidazole thermogel improves retention and decreases permeation through the skin
Provedor de dados: 60
Autores: Melo,Elayne Karine Souto de; Araujo,Thalita Pedon de; Silva,José Wellithom Viturino da; Chagas,Stephanye Carolyne Christino; Bedor,Danilo César Galindo; Santana,Davi Pereira de; Leal,Leila Bastos.
ABSTRACT Metronidazole (MTZ) is widely used as the standard antibiotic for the treatment of rosacea and, more recently, is being used off label in Brazilian hospitals for the treatment of wounds. Following oral administration, minimal amounts of active agent reaches the skin and side effects are strongly induced. Consequently, MTZ is currently being applied topically in order to improve the therapeutic efficacy with reduced side effects, with Rozex(r) (RZ) (an MTZ gelled formulation) being the only marketed product. This study examined whether the use of MTZ 0.75% from thermogel formulations could improve drug retention and reduce dermal exposure compared to that by Rozex(r). Following a 21 h permeation study, the highest total amount of MTZ permeated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metronidazole/evaluation; Metronidazole/drug retention; Poloxamer 407; Rosacea/treatment; Dermatopharmacokinetic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200626

Solubility and dissolution enhancement of flurbiprofen by solid dispersion using hydrophilic carriers
Provedor de dados: 60
Autores: Daravath,Bhaskar; Naveen,Chella; Vemula,Sateesh Kumar; Tadikonda,Rama Rao.
ABSTRACT The intent of the current work is to study the effect of polyethylene glycol 8000 and polyethylene glycol 10000 as hydrophilic carriers on dissolution behaviour of flurbiprofen. In the present study, solvent evaporation method was used to prepare flurbiprofen solid dispersions and evaluated for physico-chemical properties, drug-carrier compatibility studies and dissolution behaviour of drug. Solubility studies showed more solubility in higher pH values and formulations SD4 and SD8 were selected to prepare the fast dissolving tablets. FTIR and DSC study showed no interaction and drug was dispersed molecularly in hydrophilic carrier. XRD studies revealed that there was change in the crystallinity of the drug. The results of In vitro studies showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyethylene glycol/effects; Flurbiprofen/solubility; Flurbiprofen/dissolution rate; Drug-carrier compatibility/study; Dissolution efficiency.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400625

An innovative, simple, fast, and less toxic high-performance liquid chromatographic method for determination of prednisone in capsules
Provedor de dados: 60
Autores: Silva,Pedro Henrique Reis da; Enéas,Paula Cristina Rezende; Fernandes,Christian; Pianetti,Gerson Antônio.
ABSTRACT Prednisone is an anti-inflammatory steroid drug widely used in clinical practice. However, no high-performance liquid chromatographic (HPLC) method has been described in the literature for the determination of prednisone in capsules until now. Thus, an HPLC method was developed using a C18 (250x4.0, 5 µm) column, with methanol:water (70:30) as mobile phase at a flow rate of 1 mL/min and detection at 240 nm. The developed method was validated following current Brazilian legislation. Additionally, linearity was assessed by evaluating the assumptions of normality, homoscedasticity, and independency of residuals, and the fit to the linear model. The method showed linearity (r2&gt;0.99) over the range of 14.0-26.0 µg/mL, selectivity, precision...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prednisone; Capsules; High performance liquid chromatography/validation; Linearity assessment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200624

Solubility evaluation of didanosine: a comparison between the equilibrium method and intrinsic dissolution for biopharmaceutics classification purposes
Provedor de dados: 60
Autores: Dezani,André Bersani; Dezani,Thaisa Marinho; Ferreira,Julie Caroline Ferrari; Serra,Cristina Helena dos Reis.
ABSTRACT BCS (Biopharmaceutics Classification System) and BDDCS (Biopharmaceutics Drug Disposition Classification System) were proposed as tools for classifying drugs into four categories. Both systems consider the solubility as an important characteristic for the classification of compounds in drug development and in vivo disposition prediction. Although some results of drug solubility can be found in the literature, the aforementioned characteristic is not entirely clear when considering didanosine (ddI). Based on that, the solubility of ddI was evaluated using equilibrium and intrinsic dissolution methods. For the equilibrium method, excess amount of ddI was added to each media until obtaining a supersaturated solution and the mixture was submitted to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Didanosine/solubility; Biopharmaceutics Classification System (BCS); Biopharmaceutics Drug Disposition Classification System (BDDCS); Intrinsic dissolution; Equilibrium solubility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200632

Evaluation of demands of inclusion, exclusion and alteration of technologies in the Brazilian Health System submitted to the National Committee on Technology Incorporation
Provedor de dados: 60
Autores: Nunes,Luciana Macatrão Nogueira; Fonteles,Marta Maria de França; Passos,Ana Cláudia Brito; Arrais,Paulo Sérgio Dourado.
ABSTRACT The steady increase in the number of health technologies and advances in associated research generate management challenges in the choice of technologies to be made available to the public. From 2011, the process of inclusion, exclusion and alteration of technologies to the Brazilian Unified Health System (SUS) has undergone major transformations, such as the creation of the National Committee on Technology Incorporation (CONITEC). This study analyzed the decisions of CONITEC since its inception until July 2015. The analyzed variables were: type of technology, reason for application, name of the technology, indication, claimant and CONITEC decision status. We found that the Government was the main claimant, accounting for 58.1% of the 420 cases....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian Unified Health System/evaluation; Brazilian Unified Health System/technology; Health Technology Assessment; Health Technology; National Committee on Technology Incorporation/Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200625

Total flavonoids from Ampelopsis megalophylla suppress proliferation of vascular smooth muscle cells in vivo and in vitro
Provedor de dados: 60
Autores: Qiu,Zhenpeng; Zhou,Junxuan; Hu,Junjie; Wu,Yong; Zheng,Guohua.
ABSTRACT Various benefits of flavonoids for ameliorating cardiovascular diseases have been demonstrated. However, the lowering effects on blood pressure caused by antiproliferative potentials of flavonoids in vascular smooth muscle cells are rare. In this study, the antihypertensive effects of total flavonoids from Ampelopsis megalophylla were investigated. The dynamic pressure values and the rate of media thickness versus lumen diameter were measured by the tail-cuff system and H&amp;E staining in vivo, respectively. The mRNA expressions of ACE, Ang II, eNOS, c-Myc, cyclin D1 and p27Kip1 in thoracic aorta or A7r5 cells were measured by qPCR, respectively. The protein expressions of c-Myc, Cyclin D1, p27Kip1 and β-catenin in tissues or A7r5 cells were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ampelopsis megalophylla; Flavonoids/effects; Cardiovascular remodeling; Β-Catenin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300619

Chemical composition, antioxidant and biological activity of Ocotea bicolor Vattimo-Gil (LAURACEAE) essential oil
Provedor de dados: 60
Autores: Damasceno,Carolina Sette Barbosa; Oliveira,Letícia Freire de; Szabo,Ellis Marina; Souza,Ângela Maria; Dias,Josiane Fatima Gaspari; Miguel,Marilis Dalarmi; Miguel,Obdúlio Gomes.
ABSTRACT The essential oil composition of the Ocotea bicolor, native plant of Brazil, was studied for the first time. The essential oil of the leaf was obtained by hydrodistillation and analyzed by GC/MS. The analytical procedure revealed a predominance of sesquiterpenes, δ-cadinene (7.39%), β-sesquiphellandrene (6.67%), β-elemene (5.41%) and α-cadinol (5,23%). The essential oil was submitted to brine shrimp toxicity evaluation, antioxidant and antibacterial tests. The antioxidant activity by the formation of phosphomolybdenum complex method presented positive results. The minimum inhibitory concentration (MIC) values were higher than 1000 μg/mL for the microorganisms tested. Toxicity activity revealed LC50 results of 40.10 (μg/mL), being toxic to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ocotea bicolor/Oil essential/chemical composition; Lauraceae; Antioxidant activity; Biological activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400615

Guava: phytochemical composition of a potential source of antioxidants for cosmetic and/or dermatological applications
Provedor de dados: 60
Autores: Chiari-Andréo,Bruna Galdorfini; Trovatti,Eliane; Marto,Joana; Almeida-Cincotto,Maria Gabriela José de; Melero,Ana; Corrêa,Marcos Antonio; Chiavacci,Leila Aparecida; Ribeiro,Helena; Garrigues,Teresa; Isaac,Vera Lucia Borges.
ABSTRACT Guava (Psidium guajava L.) is a native fruit of the American tropics with commercial applications for its taste, flavor and aroma. Numerous pharmacological uses have been described for it, such as the antiseptic effect of its leaves, the use of the fresh fruit and tea from its leaves for the treatment of diarrhea, dysentery, diabetes mellitus, and others. However, considering its rich composition, the guava also is a potential source of antioxidants to be used in the development of new formulations for cosmetic and/or dermatological applications, the main focus of this research. Herein, we describe the study of the phytochemical composition and the antioxidant activity of a guava extract prepared with non-toxic solvents aiming its use at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: P. guajava L./phytochemistry; P. guajava L./use in cosmetics; P. guajava L./antioxidant/chemical composition; P. guajava L/chemical stability; High Performance Liquid Chromatography.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200612

Antioxidant activity, antibacterial potential and characterization of active fraction of Dioscorea pentaphylla L. tuber extract collected from Similipal Biosphere Reserve, Odisha, India
Provedor de dados: 60
Autores: Kumar,Sanjeet; Mahanti,Padma; Singh,Nihar Ranjan; Rath,Sakti Kant; Jena,Padan Kumar; Patra,Jayanta Kumar.
ABSTRACT Dioscorea pentaphylla L., a wild tuber is used both as food and medicines among different ethnic groups of Similipal Biosphere Reserve, India. Tubers are used against skin infections. In order to establish and confirm tribal claims, methanol extract was subjected to fractionation. The active fraction (DP1) was subsequently used for further purification and NMR (Nuclear magnetic resonance) characterization. The phytochemical analysis revealed the presence of saponin groups. The antibacterial activity of DP1 was done against selected bacterial strains (Salmonella typhi, Shigella flexneri, Streptococcus pyogenes, Streptococcus mutans and Vibrio cholerae) using DD (disc diffusion), AWD (agar well diffusion) and broth dilution assay. The activity was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dioscorea pentaphylla/extract/active fraction; Dioscorea pentaphylla/ antibacterial activity/antioxidant; NMR characterization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400623

Acute hypotensive and diuretic activities of Berberis vulgaris root bark aqueous extract in normal rats
Provedor de dados: 60
Autores: Ahmed,Muhammad; Azmat,Aisha; Khan,Salahuddin.
ABSTRACT The aim of this study is to investigate the effectiveness of intravenous administration of Berberis vulgaris root bark aqueous extract (BRBD) on the cardiovascular and renal functions of healthy normotensive rats. The different doses of BRBD 1, 10 and 20 mg/kg were administered intravenously (i.v) in normal rats. Blood pressure, diuretic activity and serum renal profile were analyzed. Intravenous injection of BRBD at the different doses of 1, 10 and 20 mg/kg showed a dose-dependent reduction in mean arterial blood pressure (P&lt;0.001). At different doses of 1, 10 and 20 mg/kg, the hypotensive effect remained for more than one hour. Single dose administration of BRBD at doses of 10 and 20 mg/kg caused a significant increase in urine output...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Berberis vulgaris root bark/ aqueous extract (BRBD); Mean arterial blood pressure (MABP); Diuresis; Serum renal profile test.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400301

Development and characterization of pullulan-polymethacrylate free films as potential material for enteric drug release
Provedor de dados: 60
Autores: Lima,Isabela Angeli de; Pomin,Suelen Plaza; Cavalcanti,Osvaldo Albuquerque.
ABSTRACT Free films of pullulan-polymethacrylate associations were produced by casting process to develop a novel target-specific material. For characterization, tests of water vapor permeability, swelling index, infrared absorption spectroscopy, thermogravimetric analysis, scanning electron microscopy and mechanical analysis were performed. The polysaccharide concentration directly influenced vapor permeability and swelling, increasing the values of the latter up to five times when added in a proportion of 20% (per weight). The individual properties of each polymer were maintained, and chemical interactions were not detected. The films were found to be thermally stable and they had unaltered mechanical properties with the addition of the polysaccharide....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Films; Polymeric material; Modified release/enteric release/oral delivery/controlled release; Glucans; Eudragit; Physicochemical characterization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300601

Factors associated with statin-related adverse muscular events in adult dyslipidemic outpatients
Provedor de dados: 60
Autores: Castro,Paula Ferreira; Ribeiro,Eliane; Dorea,Egidio Lima; Pinto,Gelba Almeida; Hirata,Rosario Dominguez Crespo.
ABSTRACT Statins are the most prescribed lowering-cholesterol drugs. They are well tolerated, however, some patients present muscular adverse symptoms. Clinical and laboratory data from 120 dyslipidemic patients prescribed with statins were obtained from January to December/2013 at a University Hospital in Sao Paulo city, Brazil, to study factors associated with statin-related adverse muscular events (AME). Pharmacotherapy and statin-related AME data (serum CK elevation and any degree of myopathy, myalgia, myositis or rhabdomyolysis) of the dyslipidemic patients were recorded. The study was approved by local Ethics Committees. Simvastatin (70%) and atorvastatin (25%) were the most prescribed statins. AME related to statin treatment were found in 17% of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Statins/study/effects; Statins/ muscular adverse event; Dyslipidemia; Drug intolerance; Drug interaction/pharmacotherapy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400618

Molecular biology of human epidermal receptors, signaling pathways and targeted therapy against cancers: new evidences and old challenges
Provedor de dados: 60
Autores: Ferreira,Paulo Michel Pinheiro; Pessoa,Cláudia.
ABSTRACT Human epidermal receptors (HER1/2/3/4) belong to the class of receptor-type tyrosine kinases. After binding a ligand, dimerization, it will ocurr activation of intracellular kinases after two-dimensional and cytoplasmic tail reciprocal transphosphorylation. This transphosphorylation recruits signaling pathways such as Ras/Raf/MEK/Erk1-2, PI3-K/AKT and JAK/STAT, which can affect the cell cycle, cytoskeleton reorganization, apoptosis, metastasis, differentiation, angiogenesis and transcription. HER deregulation is found in epithelial, mesenchymal and nervous neoplasms and is associated with poor prognosis and tumor severity. Since HER are promiscuous proteins when subjected to mutations, resultant modifications confer cellular metabolic superiority...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human epidermal receptors/molecular biology; Tyrosine kinase; Cancers/resistance; Chemotherapy; Therapeutic strategies.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200630

Arginine enzymatic deprivation and diet restriction for cancer treatment
Provedor de dados: 60
Autores: Zam,Wissam.
ABSTRACT Recent findings in amino acid metabolism and the differences between normal, healthy cells and neoplastic cells have revealed that targeting single amino acid metabolic enzymes in cancer therapy is a promising strategy for the development of novel therapeutic agents. Arginine is derived from dietary protein intake, body protein breakdown, or endogenous de novo arginine production and several studies have revealed disturbances in its synthesis and metabolism which could enhance or inhibit tumor cell growth. Consequently, there has been an increased interest in the arginine-depleting enzymes and dietary deprivation of arginine and its precursors as a potential antineoplastic therapy. This review outlines the most recent advances in targeting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arginine-depleting enzyme/antineoplastic therapy; Dietary deprivation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300402

Use of unlicensed and off-label drugs in neonates in a Brazilian university hospital
Provedor de dados: 60
Autores: Gonçalves,Adriana Cristina de Souza; Reis,Adriano Max Moreira; Marçal,Ana Carolina Gusmão; Bouzada,Maria Cândida Ferrarez.
ABSTRACT This study was designed to investigate the use of off-label and unlicensed drugs in a Neonatal Care Unit (NCU) and to compare the frequency of use of off-label drugs according to the drug regulatory agencies in Brazil (Agência Nacional de Vigilância Sanitária-ANVISA) and the United States Food and Drug Administration (FDA). A prospective observational study was carried out in the NCU. Prescriptions were classified as off-label and unlicensed using both ANVISA and FDA criteria. A total of 157 newborns and 1187 prescriptions were analyzed. The most prescribed drug was fentanyl (9.3%), followed by multivitamin (8.4%) and gentamicin (7.9%). According to ANVISA criteria, there were 665 (56.0%) off-label prescriptions and 86 (7.2%) unlicensed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drugs/use/University Hospital/Brazil; Drug/use/off-label/unlicensed; Drug therapy; Neonatology; University Hospital/Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300622

Content design and validation of a Standard Operating Procedure to provide pharmacotherapy follow-up for the elderly in Cuba
Provedor de dados: 60
Autores: Ortega López,Irma Leonor; Dupotey Varela,Niurka María; Reyes Hernández,Ivette; Verdecia Rosés,Miguel Ernesto; Veranes Vera,Yoenia; Sagaró Yi,Natacha de la Concepción; Núñez Pérez,Claudia Lisset; Barroso Barrientos,Arlettys.
ABSTRACT Incorporating methodological tools that allow uniform and standardized development from the clinical pharmacy services to the Pharmaceutical Care practice, is nowadays a necessity. Considering the importance of pharmaceutical care provision to elderly patients, this manuscript introduces the design and content validation of a standard operating procedure to provide pharmacotherapy follow-up to the elderly in nursing homes in Cuba. The procedure was designed based on a deep analysis of documents relative to experiences focused on holistic care to elderly patients, criteria for the identification and assessment of potentially inappropriate prescriptions and the relationship between functional geriatric evaluation and the use of drugs. The content...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Standardized Operating Procedure/validation; Pharmacotherapy Follow-Up/elderly/Cuba; Pharmaceutical Care/Cuba; Comprehensive Health Carefor/elderly; Delphi methodology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200620

Potential nutritional and antioxidant activity of various solvent extracts from leaves and stem bark of Anisophyllea laurina R. Br ex Sabine used in folk medicine
Provedor de dados: 60
Autores: Onivogui,Gbago; Zhang,Xiaodan; Diaby,Mohamed; Maomy,Clotaire Gna; Song,Yuanda.
ABSTRACT Anisophyllea laurina is a plant that has been used in folk medicine to treat malaria, dysentery, diabetes, toothache and various skin diseases. Leaves extract had protein content of 9.68% and a high calcium content of 25084.317 mg/100 g while stem bark extract was found to contain greater amounts of calcium (8560.96 mg/100 g), potassium (7649.47 mg/100 g), magnesium (1462.49 mg/100 g) and iron (973.33 mg/100 g). Palmitic acid, linolenic acid, linoleic acid and oleic acid were the most abundant fatty acids in leaves and stem bark extracts. Furthermore, total phenolic (2382.39 mg GAE /100 g) and total flavonoid (385.79 mg QE/100 g) contents were abundant in stem bark while leaves extract was rich in total tannin content (3466.63 mg CE/100 g)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anisophyllea laurina/extract/ antioxidant activity; Anisophyllea laurina/extract/ total phenolic; Proximate composition; Flavonoid; Tannin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200631

Hydrocortisone release from tablets based on bioresorbable poly(ether-ester-urethane)s
Provedor de dados: 60
Autores: Orozco-Castellanos,Luis Manuel; Marcos-Fernández,Angel; Alonso-Castro,Angel Josabad; González-García,Gerardo; Báez-García,José Eduardo; Rivera-Leyva,Julio Cesar; Zapata-Morales,Juan Ramón; Ruiz-Padilla,Alan Joel.
Abstract Bioresorbable linear poly(ether-ester-urethane)s with different hydrophilic characteristics were synthesized from triblock copolymers of poly(ε-caprolactone)-poly(ethylene oxide)-poly(ε-caprolactone) (PCL-PEO) as macrodiols, and L-lysine diisocyanate (LDI) or hexamethylenediisocyanate (HDI) were used as the required diisocyanates. Macrodiols were obtained by ring-opening polymerization (ROP) of ε-caprolactone (CL). Polyurethanes were synthesized by the reaction of the triblock copolymers with LDI or HDI in solution using stannous 2-ethylhexanoate as catalyst. Polyurethane tablets were fabricated and investigated as prospective drug delivery systems. The effect of the PEO content on the polymers' performance as drug carriers was evaluated. It was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioresorbable polyurethanes; Drug delivery; Hydrocortisone; Macrodiol.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100629

Assessment of pharmaceutical services in HIV/AIDS health units in the city of Niterói, Brazil
Provedor de dados: 60
Autores: Piccoli,Nilo Jorge; Brito,Monique Araújo de; Castilho,Selma Rodrigues de.
ABSTRACT This study aimed to conduct an assessment of pharmaceutical services in HIV/AIDS in the city of Niteroi, Brazil, with emphasis on management. It was done a descriptive cross-sectional study, and the approach used was a normative assessment focused on quality. The indicators used were analyzed individually or grouped according to the components of pharmaceutical services. The assessment identified some good points, especially regarding the good availability of ARVs, and good guide patients in the use of these drugs, and also some problems such as low levels of compliance in relation to good dispensing practices criteria and storage and a high time for the distribution of medicines. The result was a degree of 50.3% compliance with the quality...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmaceutical assistance/evaluation; Pharmaceutical assistance/Brazil; Brazilian public health system/assistance/HIV/AIDS.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200610

In vitro hypoglycemic effects of unripe and ripe fruits of Musa sapientum
Provedor de dados: 60
Autores: Bhinge,Somnath Devidas; Bhutkar,Mangesh Anil; Randive,Dheeraj Suhas; Wadkar,Ganesh Hindurao; Hasabe,Tejashri Suresh.
ABSTRACT The present study was undertaken to verify the hypoglycemic potential of unripe and ripe fruit extracts of Musa sapientum by using various in-vitro techniques, namely glucose adsorption capacity, glucose diffusion, amylolysis kinetics and glucose transport across the yeast cells. The results revealed that the unripe and ripe fruit extracts of Musa sapientum adsorbed glucose and the adsorption of glucose increased remarkably with an increase in glucose concentration. There were no significant (p≤0.05) differences between their adsorption capacities. In the amylolysis kinetic experimental model the rate of glucose diffusion was found to be increased with time from 30 to 180 min and both extracts exhibited significant inhibitory effects on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetes mellitus; Hypoglycemic effect/study; Glucose diffusion; Yeast cells; Musa sapientum/effects.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400605

Factors associated with adherence to immunomodulator treatment in people with multiple sclerosis
Provedor de dados: 60
Autores: Câmara,Nair Assunta Antônia Corso; Gondim,Ana Paula Soares.
Abstract To determine the association between factors and adherence to immunomodulator treatment in people with multiple sclerosis treated in reference centers. Cross-sectional study conducted with 188 people who used immunomodulators in three reference centers in Ceará from March to July 2012. Adherence was assessed using the Moriskscale and factors were assessed using a questionnaire addressing socioeconomic and personal characteristics, the disease, the use of immunomodulator and educational activities. The determination of the association was expressed in crude and adjusted odds ratio with a 95% confidence interval. Adherence rate was 46% and after the logistic regression model the adherence to immunomodulator treatment was positively associated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multiple sclerosis/medication adherence; Multiple sclerosis/treatment; Immunologic factors; Risk factors.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100627

Spectrophotometric determination of rosuvastatin in pharmaceutical formulations using quinalizarin
Provedor de dados: 60
Autores: Lima,Monica Força; Cassella,Ricardo Jorgensen; Pacheco,Wagner Felippe.
ABSTRACT This work presents the development of a methodology based on the formation of a charge transfer complex between quinalizarin and rosuvastatin, allowing for the spectrophotometric determination of rosuvastatin at 579 nm. The factors involved in the sensitivity of the technique were studied (nature and proportion of the solvent, reaction time, pH of aqueous phase and quinalizarin concentration). The proposed spectrophotometric procedures were validated with respect to linearity, ranges, precision, accuracy, detection and quantification limits. Calibration curves of the formed color products showed good linear relationships over the concentration range of 6-15 mg L-1. The proposed method has been successfully applied, which can be confirmed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rosuvastatin/spectrophotometric determination; Rosuvastatin/charge transfer complex; Quinalizarin/charge transfer complex; Pharmaceutical formulations.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300603

Aggravation of cyclophosphamide-induced reproductive toxicity in mice by aqueous extract of Aegle marmelos (L.)
Provedor de dados: 60
Autores: Singh,Sangita; Mishra,Awadhesh Kumar; Lata,Swarn; Tiwari,Kavindra Nath.
ABSTRACT Aegle marmelos (L.) (Rutaceae) commonly known as bael is an important medicinal fruit tree. The present study focused on the effects of aqueous extract of Aegle marmelos (AEAM) on the testis and sperm characteristics induced by cyclophosphamide (CPA) in mice. Thirty six adult Parke’s strain mice were divided into six groups: group I given only distilled water (control); group II administered with AEAM alone once in a week for five weeks; group III administered with CPA (200 mg/kg b.w., intraperitoneally) once in a week for five weeks and group IV-VI CPA along with AEAM (400, 500 and 600 mg/kg b.w., orally). CPA was found to reduce gonadosomatic index (GSI), sperm counts, motility, viability, antioxidant activities and induced histopathological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aegle marmelos (L.)/extract/effects/sperm; Cyclophosphamide; Gonadosomatic index (GSI); Reproductive toxicity; Spermatozoa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300614

In silico pharmacodynamics, toxicity profile and biological activities of the Saharan medicinal plant Limoniastrum feei
Provedor de dados: 60
Autores: Ammar,Ouahab.
ABSTRACT In-silico study was performed to find the pharmacodynamics, toxicity profiles and biological activities of three phytochemicals isolated from Limoniastrum feei (Plumbagenaceae). Online pharmacokinetic tools were used to estimate the potential of Quercetin, kaempferol-3-O-β-D-glucopyranoside (astragalin) and quercitin-7-O-β-D-glucopyranoside as specific drugs. Then the prediction of potential targets of these compounds were investigated using PharmMapper. Auto-Dock 4.0 software was used to investigate the different interactions of these compounds with the targets predicted earlier. The permeability of quercetin was found within the range stated by Lipinski ׳s rule of five. Hematopoietic prostaglandin (PG) D synthase (HPGDS), farnesyl diphosphate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Limoniastrum feei/pharmacokinetics; Limoniastrum feei/biological activity; Quercetin; Astragalin; Quercetin 7; Medicinal plants; Molecular docking.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300606

Antimicrobial susceptibility profile and research of mec A and erm genes in coagulase-negative staphylococci isolated from platelet concentrates bags
Provedor de dados: 60
Autores: Martini,Rosiéli; Hörner,Rosmari; Graichen,Daniel Ângelo Sganzerla.
Abstract In recent years, several studies have described the clinical impact of bacterial infection associated with transfusion of platelet concentrates (PCs). Among the blood components, PCs are responsible for the highest rates of bacterial contamination as well as septic transfusion reactions. We assessed antimicrobial susceptibility profile, resistance to methicillin (MRCoNS), and resistance to macrolides, lincosamides and streptogramins of group B (MLSB) of 16 coagulase-negative staphylococci (CoNS) isolates from an investigation in 691 PCs bags. We then compared conventional and automated phenotypic methods, disc diffusion test (DD) and VITEK(r) 2, respectively as well as phenotypic and genotypic methods (Polymerase Chain Reaction - PCR). All CoNS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial resistance; Staphylococcus sp; Platelet concentrates; MecA; Erm.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100609

The radiation protection role of heparin-SOD conjugate in irradiated mice
Provedor de dados: 60
Autores: Zhong,Chuanqing; Huang,Xiaojing; Zhang,Shu; Cheng,Yanna; Cao,Guangxiang; Wang,Fengshan.
ABSTRACT Heparin-SOD conjugate (Hep-SOD) was prepared by modifying Cu,Zn-SOD with heparin. An acute radiation-induced mouse injury model was constructed to study the radiation protection effects of Hep-SOD conjugate. Fifty-six mice were randomly divided into seven groups: (I) normal control group; (II) irradiated control group; (III) positive control group (amifostine group, 300 mg/kg); (IV) SOD group (35000 U/kg); (V) high dosage of Hep-SOD group (70000 U/kg); (VI) medium dosage of Hep-SOD group (35000 U/kg); (VII) low dosage of Hep-SOD group (17500 U/kg). Drugs were intraperitoneally injected into each mouse 1 h before radiation except for the normal control group. All the irradiated groups were irradiated with 6 Gy. Organ indices, haematopoietic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heparin-superoxide dismutase conjugate; Radiation-induced damage; Oxidative stress injury.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400611

Synthetic phosphoethanolamine: the state of the art of scientific production
Provedor de dados: 60
Autores: Anastácio,Lucas de Barros; Delmaschio,Camila Rocha; Oliveira,Danielle Aparecida; Chequer,Farah Maria Drumond.
ABSTRACT Cancer is a multifactorial disease and a serious public health problem. Currently, alternative drug treatments for cancer are actively being sought, which is the case of synthetic phosphoethanolamine (PHOS-S), a compound that could possibly have anticarcinogenic effects. To analyze the available scientific evidence to evaluate the anticarcinogenic effects of in vivo and in vitro PHOS-S. A systematic literature review of scientific articles aimed at evaluating the anticarcinogenic potential of PHOS-S, in vivo and in vitro, using the databases PubMed, ScienceDirect, SciElo, CAPES Portal and LILACS. The selected papers suggest a possible anticarcinogenic effect of PHOS-S by inhibiting tumor growth by inducing apoptosis and cell cycle blockade as well...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Synthetic phosphoethanolamine/effects/in vivo/in vitro; Antineoplastic Agent; Cancer.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400402

Spray dried aqueous extract of Orthosiphon aristatus Blume (Java tea)
Provedor de dados: 60
Autores: Robaina-Mesa,Malvis; López-Hernández,Oreste Dario; Rodríguez-Chanfrau,Jorge Enrique; Nogueira-Mendoza,Antonio.
ABSTRACT Orthosiphon aristatus (Lamiaceae) is an herb medicinal found mainly in China, Indian and South East Asia. The purpose of this work was to develop a technological process for obtaining dry extract of Orthosiphon aristatus by spray dry. A process for the obtaining of dry extract from aqueous extract of Orthosiphon aristatus was studied. Response Surface Methodology experimental design was applied to evaluate the effects of inlet and outlet air temperature on drying yield (%). Mixture experimental design was applied to evaluate the drying adjuvant - total solids relation. Maltodextrin was evaluated as drying adjuvant. The best results were obtained when applying an inlet temperature of 120 °C and outlet temperature of 80 °C and a drying adjuvant -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orthosiphon aristatus/extract; Spray dry/process; Drying adjuvant; Reflux method; Experimental design.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300608

Solubility and dissolution studies of tibolone polymorphs
Provedor de dados: 60
Autores: Bonfilio,Rudy; Souza,Marília Cristina Oliveira; Leal,Jockastta Silva; Viana,Olímpia Maria Martins Santos; Doriguetto,Antônio Carlos; Araújo,Magali Benjamin de.
ABSTRACT Different solid forms of an active pharmaceutical ingredient can have distinct chemical and physical characteristics. In this work, we studied the solubility and dissolution properties of the described tibolone polymorphic forms (I and II). Both forms were successively recrystallized and characterized by powder X-ray diffraction and attenuated total reflection infrared spectroscopy. Equilibrium solubility and dissolution profiles were performed for both forms. Solubility studies demonstrated that form II is statistically more soluble in water, 0.01 mol L-1 HCl and pH 4.5 acetate buffer. The solubility of forms I and II were explained in terms of crystal packing. Dissolution tests of tablets showed a lower release of polymorphic form II than form I...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tibolone/polymorphs; Powder X-ray diffraction/methods; Infrared spectroscopy/methods; Solubility/drug effects; Dissolution/analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400607

Hepatoprotective effect of Phytosome Curcumin against paracetamol-induced liver toxicity in mice
Provedor de dados: 60
Autores: Tung,Bui Thanh; Hai,Nguyen Thanh; Son,Phan Ke.
Abstract Curcuma longa, which contains curcumin as a major constituent, has been shown many pharmacological effects, but it is limited using in clinical due to low bioavailability. In this study, we developed a phytosome curcumin formulation and evaluated the hepatoprotective effect of phytosome curcumin on paracetamol induced liver damage in mice. Phytosome curcumin (equivalent to curcumin 100 and 200 mg/kg body weight) and curcumin (200 mg/kg body weight) were given by gastrically and toxicity was induced by paracetamol (500 mg/kg) during 7 days. On the final day animals were sacrificed and liver function markers (ALT, AST), hepatic antioxidants (SOD, CAT and GPx) and lipid peroxidation in liver homogenate were estimated. Our data showed that phytosome...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Curcumin/effects; Curcumin/antioxidant activity; Curcuma longa; Phytosome; Hepatoprotective.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100628

Changes in weight and body fat after use of tetracycline and  Lactobacillus gasseri in rats
Provedor de dados: 60
Autores: Marciano,Jorge José; Fiol,Fernando de Sá Del; Ferreira,Alessandra Cristina Marciano Tardelli; Marques,Maria Cláudia; Santana,Luciane Lopes.
ABSTRACT Recent studies have shown a role of intestinal microbiota in obesity. The consumption of antibiotics in the last 70 years has led to changes in intestinal microbiota, which has led to weight gain and body fat accumulation. To evaluate the possibility of weight gain induced by antibiotics and the possible protective effect of probiotics, we divided 45 animals (Rattus norvegicus) into groups and administered the following treatments over two weeks: tetracycline, tetracycline + Lactobacillus gasseri, and NaCl. The animals were weighed over the course of 8 weeks, and at the end of the treatment period, they were measured and subjected to bioelectrical impedance analysis. The results show that the group receiving tetracycline alone had a higher body...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobials/evaluation; Obesity/tests; Gut microbiota/tests; Tetracyclines.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100619

Synthesis and  in silico study of 2-furyl(4-{4-[(substituted)sulfonyl]benzyl}-1-piperazinyl)methanone derivatives as suitable therapeutic agents
Provedor de dados: 60
Autores: Hussain,Ghulam; Abbasi,Muhammad Athar; Aziz-ur-Rehman,; Siddiqui,Sabahat Zahra; Shah,Syed Adnan Ali; Ashraf,Muhammad; Qurat-ul-Ain,; Ahmad,Irshad; Malik,Rabia; Lodhi,Muhammad Arif; Khan,Farman Ali; Shahid,Muhammad; Fatima,Hina.
Abstract In the study presented here, a new series of 2-furyl(4-{4-[(substituted)sulfonyl]benzyl}-1-piperazinyl)methanone derivatives was targeted. The synthesis was initiated by the treatment of different secondary amines (1a-h) with 4-bromomethylbenzenesulfonyl chloride (2) to obtain various 1-{[4-(bromomethyl)phenyl]sulfonyl}amines (3a-h). 2-Furyl(1-piperazinyl)methanone (2-furoyl-1-piperazine; 4) was then dissolved in acetonitrile, with the addition of K2CO3, and the mixture was refluxed for activation. This activated molecule was further treated with equi-molar amounts of 3a-h to form targeted 2-furyl(4-{4-[(substituted)sulfonyl]benzyl}-1-piperazinyl)methanone derivatives (5a-h) in the same reaction set up. The structure confirmation of all the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piperazine derivatives/antimicrobial activity; Piperazine derivatives/in silico; Piperazine derivatives/Cholinesterase assays; Piperazine derivatives/ hemolytic activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100613

Assessment of quality of life in type II diabetic patients using the modified diabetes quality of life (MDQoL)-17 questionnaire
Provedor de dados: 60
Autores: Prajapati,Vivek Bhanubhai; Blake,Raushan; Acharya,Leelavathi Dinesh; Seshadri,Shubha.
ABSTRACT Diabetic complications, comorbidities, and cost of treatment affect the quality of life (QoL) of an individual. The QoL assessment is considered an important measure of outcome in chronic disease management. The objective of our study was to assess the quality of life in Type II diabetes mellitus patients with and without complications using the modified diabetes quality of life (MDQoL)-17. A prospective descriptive study was conducted over 6 months, after taking ethical committee approval. As per the inclusion criteria from medicine wards of tertiary care hospital, 250 patients were selected. Demographic characteristics were documented in the data collection form and the patients were administered with the MDQoL questionnaire in different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quality of Life; Diabetes complications/prevention and control; Diabetes Mellitus; Surveys and Questionnaires/utilization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400613

The impacts of Elaeagnus umbellata Thunb. leaf and fruit aqueous extracts on mice hepatic, extrahepatic antioxidant and drug metabolizing enzymes related structures
Provedor de dados: 60
Autores: Ozen,Tevfik; Yildirim,Kemal; Toka,Mehmet.
ABSTRACT In this work, the potential chemopreventive activities of Elaeagnus umbellata fruit aqueous (EUFA) and leaf aqueous (EULA) extracts focusing on the modulatory influence of xenobiotic metabolizing enzymes (XMEs), antioxidant enzymes, glucose-6-phosphate dehydrogenase (G6PD), 6-phosphogluconate dehydrogenase (6PGD), lactate dehydrogenase (LDH) activity, lipid peroxidation (LP), sulfhydryl groups were investigated in the hepatic and extrahepatic organs of Swiss albino mice (50 and 100 mg/kg body wt given orally for 14 days) and compared with BHA (0.75 % in diet). The modulatory and chemopreventive properties of two different doses EUFA and EULA were observed for cytochrome P450, cytochrome b5, sulfhydryl groups, NADPH-cytochrome P450 reductase,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elaeagnus umbellata Thunb; Chemopreventive properties; Xenobiotic metabolizing enzymes; Antioxidant enzymes; Lipid peroxidation; Glutathione; Lactate dehydrogenase; Glucose-6-phosphate dehydrogenase; 6-Phosphogluconate dehydrogenase.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300625

Impact Factor: an appropriate criterion for the Qualis journals classification in the Pharmacy area?
Provedor de dados: 60
Autores: Farias,Mareni Rocha; Storb,Bernd Heinrich; Storpirtis,Silvia; Leite,Silvana Nair.
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300101

Effect of alcoholic beverages on progeny and reproduction of mice
Provedor de dados: 60
Autores: Figueiro,Fernanda Dias; Bispo,Ana Clara Cerato; Guarido,Karla Lorena; Marianno,Priscila; Costa,Gabriel de Araújo; Morimoto,Helena Kaminami; Salles,Maria José Sparça.
ABSTRACT Alcohol is the most commonly consumed substance in the world. The objective of this study was to evaluate the influence of alcoholic beverages on male reproduction and possible alterations in their offspring. The mice were divided into 4 groups: beer, wine, cachaça (a type of sugarcane rum), with ethanol concentrations of 1.9 g/kg, and control group treated with PBS. The treatment period was 35 days. The animals which received cachaça, demonstrated significant weight loss in the testes and epididymis. The alcoholic beverages promoted significant testosterone level and fertilization index diminution, and morphological alterations in the spermatozoa. The beer group presented decreased implantation sites and a high frequency of dominant lethal. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alcoholic beverages/analysis; Wine/adverse effects; Beer/adverse effects; Cachaça/adverse effects; Reproduction/drugs effects.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400612

Prednisone raw material characterization and formulation development
Provedor de dados: 60
Autores: Toehwé,Leonardo Henrique; Prado,Livia Deris; Rocha,Helvécio Vinícius Antunes.
ABSTRACT Solid dosage forms for oral use, particularly tablets, are the most highly used dosage forms in therapy because they are easily administered, have high productivity and relatively low cost and provide a more stable drug to form a semi-solid net. Numerous parameters influence the quality of the final dosage form. In this study, the dissolution profile of 20-mg prednisone tablets bioequivalent to the reference product and three test formulations were evaluated using stability testing. During the study, prednisone tablets and the active pharmaceutical ingredient (API) prednisone from two different manufacturers were characterized with respect to their physical and physicochemical properties. The results showed that the dissolution profiles of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prednisone/tablets/dissolution; Solubility; Formulation; Stability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400604

Measurement uncertainty of dissolution test of acetaminophen immediate release tablets using Monte Carlo simulations
Provedor de dados: 60
Autores: Romero,Daniel Cancelli; Lourenço,Felipe Rebello.
ABSTRACT Analytical results are widely used to assess batch-by-batch conformity, pharmaceutical equivalence, as well as in the development of drug products. Despite this, few papers describing the measurement uncertainty estimation associated with these results were found in the literature. Here, we described a simple procedure used for estimating measurement uncertainty associated with the dissolution test of acetaminophen tablets. A fractionate factorial design was used to define a mathematical model that explains the amount of acetaminophen dissolved (%) as a function of time of dissolution (from 20 to 40 minutes), volume of dissolution media (from 800 to 1000 mL), pH of dissolution media (from 2.0 to 6.8), and rotation speed (from 40 to 60 rpm). Using...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetaminophen tablets/dissolution test/measurement uncertainty; Monte Carlo simulation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300613

Identification of neprilysin as a potential target of arteannuin using computational drug repositioning
Provedor de dados: 60
Autores: Ye,Xuan-Yi; Ling,Qing-Zhi; Chen,Shao-Jun.
ABSTRACT The discovery of arteannuin (qinghaosu) in the 20th Century was a major advance for medicine. Besides functioning as a malaria therapy, arteannuin is a pharmacological agent in a range of other diseases, but its mechanism of action remains obscure. In this study, the reverse docking server PharmMapper was used to identify potential targets of arteannuin. The results were checked using the chemical-protein interactome servers DRAR-CPI and DDI-CPI, and verified by AutoDock Vina. The results showed that neprilysin (also known as CD10), a common acute lymphoblastic leukaemia antigen, was the top disease-related target of arteannuin. The chemical-protein interactome and docking results agreed with those of PharmMapper, further implicating neprilysin as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arteannuin/chemical-protein interactome; Computational drug repositioning; Neprilysin/identification; Reverse docking.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200614

Design and preparation of a novel colon-targeted tablet of hydrocortisone
Provedor de dados: 60
Autores: Ren,Yachao; Jiang,Lei; Yang,Shuman; Gao,Sainan; Yu,Hui; Hu,Jie; Hu,Dandan; Mao,Wenbin; Peng,Haisheng; Zhou,Yulong.
ABSTRACT The objective of this research was to design a new colon-targeted drug delivery system based on chitosan. The properties of the films were studied to obtain useful information about the possible applications of composite films. The composite films were used in a bilayer system to investigate their feasibility as coating materials. Tensile strength, swelling degree, solubility, biodegradation degree, Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), Scanning Electron Microscope (SEM) investigations showed that the composite film was formed when chitosan and gelatin were reacted jointly. The results showed that a 6:4 blend ratio was the optimal chitosan/gelatin blend ratio. In vitro drug release results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chitosan/evaluation; Chistosan/evaluation/gelatin complex film; Drugs/administration; Drugs/delivery system/Colon-targeting; Tablets/bilayer-coated.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100601

Cost-effectiveness of insulin analogs from the perspective of the Brazilian public health system
Provedor de dados: 60
Autores: Cazarim,Maurílio de Souza; Rodrigues,João Paulo Vilela; Cruz-Cazarim,Estael Luzia Coelho da; Ayres,Lorena Rocha; Pereira,Leonardo Régis Leira.
ABSTRACT Human insulin is provided by the Brazilian Public Health System (BPHS) for the treatment of diabetes, however, legal proceedings to acquire insulin analogs have burdened the BPHS health system. The aim of this study was to perform a cost-effectiveness analysis to compare insulin analogs and human insulins. This is a pharmacoeconomic study of cost-effectiveness. The direct medical cost related to insulin extracted from the Ministry of Health drug price list was considered. The clinical results, i.e. reduction in glycated hemoglobin (HbA1c), were extracted by meta-analysis. Different scenarios were structured to measure the uncertainties regarding the costs and reduction in HbA1c. Decision tree was developed for sensitivity of Incremental Cost...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetes Mellitus/treatment/cost-effectiveness/evaluation; Prolonged Action Insulin; Short Action Insulin; Brazilian Public Health System.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300616

Evaluation of polymeric PLGA nanoparticles conjugated to curcumin for use in aPDT
Provedor de dados: 60
Autores: Pietra,Renata Celi Carvalho de Souza; Cruz,Rosana Carvalho; Melo,Carla Nunes; Rodrigues,Lívia Bomfim; Santos,Patrícia Campi; Bretz,Gabriel Pissolati Matos; Soares,Betânia Maria; Sousa,Gerdal Roberto de; Ferreira,Marcus Vinícius Lucas; Cisalpino,Patrícia Silva; Magalhães,Paula Prazeres; Farias,Luiz de Macêdo; Pinotti,Marcos.
ABSTRACT Antimicrobial photodynamic therapy (aPDT) involves the association of a photosensitizing agent with a light source with the goal of causing apoptosis or microbial lysing. The use of compounds with natural active principles is gaining prominence throughout the world. Several studies from groups that are linked to the development of innovations in the pharmaceutical market have used natural dyes, such as curcumin, the efficacy of which has been demonstrated in aPDT trials. Difficulties related to physicochemical stability, solubility and cell penetration are some of the challenges associated with this field. The present work aimed to prepare, investigate the characteristics and improve the photodynamic activity of PLGA-based nanoparticles loaded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Curcumin/study; Nanoparticles/evaluation; PLGA; Antimicrobial photodynamic therapy (aPDT).
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200629

Evaluation of basil extract ( Ocimum basilicum L.) on oxidative, anti-genotoxic and anti-inflammatory effects in human leukocytes cell cultures exposed to challenging agents
Provedor de dados: 60
Autores: Güez,Camila Martins; Souza,Raul Oliveira de; Fischer,Paula; Leão,Maria Fernanda de Moura; Duarte,Jonathaline Apollo; Boligon,Aline Augusti; Athayde,Margareth Linde; Zuravski,Luísa; Oliveira,Luís Flávio Souza de; Machado,Michel Mansur.
ABSTRACT Ocimum is one of the most important genera of the Lamiaceae family. Several studies about basil and its popular use reveal many characteristics of the herb, including its use as antioxidant, anti-aging, anti-inflammatory, anti-carcinogenic, anti-microbial, and cardiovascular agents, among others. In this paper, we evaluated genotoxic, oxidative, and anti-inflammatory parameters from the extract of Ocimum basilicum in different concentrations, using human leukocytes cultures exposed to challenging agents. Our results confirm that the O. basilicum extract acts as an antioxidant and effectively reverts or subjugates the effects of high oxidizing agents such as hydrogen peroxide. These actions are attributed to its composition, which is rich in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ocimum basilicum/evaluation; Ocimum basilicum/genotoxic effects; Ocimum basilicum/anti-inflammatory properties; Medicinal plants/study.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100606

Exploring the natural chemiome to target interleukin-6 receptor (IL-6R) cytokines: an atomic scale investigation for novel rheumatoid arthritis drug discovery
Provedor de dados: 60
Autores: Chen,Qiujian; Niu,Xiaohui; Li,Nana.
ABSTRACT Natural compounds are a gold mine for treating rheumatoid arthritis (RA). The etiology of this disease is linked to inflammation, where cytokines play an important role. Strategies have been drafted for targeting cytokines as a therapeutic option in patients with RA. Inhibiting cytokines with natural compounds has become a major focus for the development of drugs to treat RA. Here, a structure-based drug design approach was employed to identify novel leads to target the interleukin 6 receptor (IL-6R). A total of 48,531 compounds of natural origin were screened. Two of these compounds were shortlisted for molecular docking simulation and tested for inhibiting gp130 dimerization in human macrophages. The results show that Lead5 (CID5329098)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rheumatoid arthritis/treatment/natural compounds; Cytokines/therapeutic target; Docking; Natural compounds/study.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300627

β-lactamase-producing Gram-negative bacteria in an intensive care unit in southern Brazil
Provedor de dados: 60
Autores: Leite,Clariana Akemi Kariya; Oizumi,Karina Yoshimi; Caleffi-Ferracioli,Katiany Rizzieri; Scodro,Regiane Bertin de Lima; Pádua,Rubia Andreia Falleiros de; Cardoso,Rosilene Fressatti; Pires,Claudia Terencio Agostinho; Siqueira,Vera Lucia Dias.
ABSTRACT The present study evaluated the antimicrobial susceptibility profile, β-lactamase production, and genetic diversity of Enterobacteriaceae, Pseudomonas aeruginosa, and Acinetobacter spp. using phenotypic identification, antimicrobial susceptibility testing, and β-lactamase phenotypic detection. Isolates were obtained from patients in an intensive care unit in a hospital in southern Brazil. Bacterial genomic DNA was extracted, followed by the genotypic detection of carbapenemases and enterobacterial repetitive intergenic consensus-polymerase chain reaction (ERIC-PCR). Fifty-six isolates (26 Klebsiella pneumoniae, five Escherichia coli, three Enterobacter aerogenes, nine P. aeruginosa, and 13 Acinetobacter spp.) were evaluated. The phenotypic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterobacteriaceae; Pseudomonas aeruginosa; Acinetobacter spp; Antimicrobial resistance; Beta-lactamases; Bacterial typing; Intensive Care Unit/study/Brazil; Drug-resistant bacteria.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200609

Simvastatin treatment reduces the cholesterol content of membrane/lipid rafts, implicating the  N -methyl-D-aspartate receptor in anxiety: a literature review
Provedor de dados: 60
Autores: Cruz,Júlia Niehues da; Magro,Débora Delwing Dal; Lima,Daniela Delwing de; Cruz,José Geraldo Pereira da.
ABSTRACT Membrane/lipid rafts (MLRs) are plasmalemmal microdomains that are essential for neuronal signaling and synaptic development/stabilization. Inhibitors of 3-hydroxy-3-methylglutaryl-coenzyme-A reductase (statins) can disable the N-methyl-D-aspartate (NMDA) receptor through disruption of MLRs and, in turn, decrease NMDA-mediated anxiety. This hypothesis will contribute to understanding the critical roles of simvastatin in treating anxiety via the NMDA receptor.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anxiolytic effects; Membrane/lipid rafts; N-methyl-D-aspartate; Simvastatin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100401

Development of radioimmunoconjugate for diagnosis and management of head-and-neck subclinical cancer and colorectal carcinoma
Provedor de dados: 60
Autores: Benedetto,Raquel; Massicano,Adriana Vidal Fernandes; Silva,Jefferson Jesus; Boas,Cristian Antonio Wieczorek Villas; Mengatti,Jair; Araújo,Elaine Bortoleti de.
ABSTRACT Scientific innovations in diagnostic methods are important drivers of cancer control and prevention. Noninvasive imaging of the epidermal growth factor receptor (EGFR) in head-and-neck squamous, cell carcinoma and colorectal cancer could be valuable to select patients for EGFR-targeted therapy, as well as to monitor the efficacy and occurrence of resistance to immunotherapy. In order to develop the first Brazilian radioimmunoconjugate for diagnosis, Cetuximab has been conjugated to p-SCN-Bn-DTPA chelator and radiolabeled with Indium-111. The conjugation methodology was optimized using different mAb:DTPA molar ratios, time was then reduced for immunoconjugate preparation, besides the protein recovery’ percentage increased after purification (m =...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Radioimmunoconjugate/development; Head and neck cancer/diagnosis; Tumors diagnosis; Cetuximab; SPECT; 111In.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400624

Effectiveness of home pharmaceutical interventions in metabolic syndrome: a randomized controlled trial
Provedor de dados: 60
Autores: Azevedo,Maria da Glória Batista de; Pedrosa,Roseana Souza; Aoqui,Caroline Mapurunga; Martins,Rand Randall; Nagashima Junior,Toshiyuki.
ABSTRACT Metabolic syndrome (MetS) is a group of different risk factors that raises the chances of develop several health problems such, as cardiovascular disease and diabetes. There are few cases in literature of studies that specifically address the use of pharmaceutical care in MetS. The aim of study was to evaluate the effectiveness of home pharmaceutical interventions in patients with this syndrome. The randomized clinical trial was conducted in subjects with diagnosis of MetS treated in a basic unit of health from Cuité, Paraíba. The patients were randomized in a 1:1 ratio to two groups: intervention (IG) and control (CG). The IG received monthly individual pharmaceutical interventions, while the CG did not. The effectiveness of the intervention...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolic syndrome/study; Pharmaceutical care/home; Pharmaceutical interventions; Drug related problems.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200608

Development of sunscreen products containing passion fruit seed extract
Provedor de dados: 60
Autores: Lourith,Nattaya; Kanlayavattanakul,Mayuree; Chingunpitak,Jiraporn.
Abstract Application of sunscreen is the most established method of protecting skin from premature aging and photoaging. In this study, the passion fruit seed extract, enriched with biologically beneficial phenolics, was formulated into sun-protective makeup product. The UVB protection of concealer mousse was found have twofold higher sun protection factor (SPF) than the liquid foundation (15.48 ± 1.60 and 5.88 ± 0.30, respectively). The SPF of concealer mousse as well as the liquid foundation containing 0.1% and 0.3% of the passion fruit seed extract were 18.75 ± 0.28, 18.99 ± 0.71 and 9.32 ± 0.88, 9.77 ± 1.37, respectively. Therefore, the concealers with a similar sun-protective efficacy (p&gt;0.05) were included for stability test accordingly. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cosmetics/study; Photoprotection/sun protection; Photoprotection/products development; Passion fruit/applications.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100625

HPLC method development and validation for the estimation of Axitinib in rabbit plasma
Provedor de dados: 60
Autores: Suneetha,Achanta; Donepudi,Sharmila.
ABSTRACT A rapid, sensitive, and accurate high performance liquid chromatography for the determination of Axitinib (AN) in rabbit plasma is developed using crizotinibe as an internal standard (IS). Axitinib is a tyrosine kinase inhibitor, used in the treatment of advanced kidney cancer, which works by slowing or stopping the growth of cancer cells. The chromatographic separation was performed on a Waters 2695, Kromosil (150 mm × 4.6 mm, 5 µm) column using a mobile phase containing buffer (pH 4.6) and acetonitrile in the ratio of 65:35 v/v with a flow rate of1 mL/min. The analyte and internal standard were extracted using liquid-liquid extraction with acetonitrile. The elution was detected by photo diode array detector at 320 nm.The total chromatographic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High performance liquid chromatography/method validation; Axitinib/determination; Axitinib/ kidney cancer treatment; Crizotinibe; Rabbit plasma; Tyrosine kinase inhibitor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300607

In vitro cytotoxic activity of five commercial samples of Tribulus terrestris Linn in Espírito Santo (Brazil)
Provedor de dados: 60
Autores: Oliveira Filho,Claudio Costa; Kampke,Edgar Hell; Vargas,Thais Souza; Salustriano,Nathacha Andrade; Scherer,Rodrigo; Fronza,Marcio; Campagnaro,Bianca Prandi.
ABSTRACT The objective was to investigate the total saponin and protodioscin concentrations and the cytotoxicity in vitro, of five samples of the plant Tribulus terrestris, commercially available in the metropolitan region of Vitória - Espirito Santo, Brazil, and to compare them with the aqueous extract of the plant. The chromatographic profile and quantification of protodioscin in commercial samples and plant extract were evaluated by LC-MS/MS. The percentage of total saponins were determined by the colorimetric method. Extracts and protodioscin cytotoxicity were analyzed by the MTT assay in three cell lineages: fibroblasts (L929), ovarian cancer (Ovcar3) and murine hepatoma (Hepa1c1c7). All extracts displayed high levels of total saponins (207.2 to 780.3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tribulus terrestres/saponin/protodioscin/concentrations; Medicinal plants; Cytotoxicity/in vitro.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400622

Chemical compositions and antioxidant activity of Heracleum persicum essential oil
Provedor de dados: 60
Autores: Gharachorloo,Maryam; Honarvar,Masoud; Mardani,Shima.
ABSTRACT In this study essential oil of the aerial parts of Heracleum persicum a spice widely used in Iran was isolated by conventional hydrodistillation (HD) and microwave-assisted hydrodistillation (MAHD) techniques. The extraction yield was determined and the chemical compositions of essential oils were identified by the application of gas chromatography/mass spectrometry (GC/MS). The antioxidant activity was determined by two different methods: 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging and oven test methods. Although the main compounds of essential oils by the both extraction methods were similar, the essential oil extracted by HD with lower extraction efficiency showed more diverse compounds. The evaluation of antioxidant activity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heracleum persicum/essential oil/chemical composition; Heracleum persicum/functional properties; Heracleum persicum/antioxidant activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300623

Preliminary in vitro assessment of the potential toxicity and antioxidant activity of Ceiba speciosa (A. St.-Hill) Ravenna (Paineira)
Provedor de dados: 60
Autores: Malheiros,Camila Krüger Cardoso; Silva,Joyce Sayonara Barbosa; Hofmann,Tânia Cristiane; Messina,Thiane Martins; Manfredini,Vanusa; Piccoli,Jacqueline da Costa Escobar; Faoro,Débora; Oliveira,Luís Flávio Souza; Machado,Michel Mansur; Farias,Fabiane Moreira.
ABSTRACT The bark tea of Ceiba speciosa, a tropical tree of the Malvaceae family, is used in the Northwestern Region of Rio Grande do Sul state, Brazil, to reduce blood cholesterol levels. However, there are no scientific data on the efficacy and safety of this plant. The aim of the present study was to evaluate the in vitro antioxidant and toxic potential of bark extracts of C. speciosa. We performed a preliminary phytochemical analysis by high-performance liquid chromatography-diode array detection (HPLC-DAD) and evaluated the oxidative damage to proteins and lipids, the radical scavenging effect, and genotoxicity of the lyophilized aqueous extract (LAECs) and the precipitate obtained from the raw ethanol extract (Cs1). The phytochemical proﬁle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ceiba speciose/phytochemistry; Ceiba speciose/antioxidant activity; Phenolic content; Comet assay; DPPH scavenging capacity; Natural medicine; Safety.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200616

Organic cocoa extract -loaded surfactant-based systems intended to skin bioadhesion
Provedor de dados: 60
Autores: Fonseca-Santos,Bruno; Funagoshi,Erica Emi; Oliveira,José Ricardo Soares de; Sacramento,Luis Vitor Silva do; Santos,André Gonzaga dos; Leonardi,Gislaine Ricci; Chorilli,Marlus.
ABSTRACT This study was to develop, characterize, and evaluate the physical-chemical stability, in vitro antioxidant activity and in vitro safety profile of liquid crystalline systems (LCS) and microemulsions (MEs) with and without organic cocoa (OC) extract. LCS stabilized by surfactant polyoxyethylene 20 cetyl ether, containing water and oleic acid were studied. LCS and MEs were characterized using polarized light microscopy, small angle X-ray scattering, rheology and in vitro bioadhesion, and were evaluated for a period of 30 days by visual aspects, centrifuge test, pH value and relative density. PLM and SAXS assays showed the presence of domains of MEs, cubic and hexagonal mesophasephases, varying the proportions of the components of the formulations;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Liquid crystals/evaluation/physical-chemical stability; Microemulsions/evaluation; Surfactant-based system; Organic cocoa extract; Skin bioadhesion.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300609

Negative effects of bisphenol A on testicular functions in albino rats and their abolitions with Tribulus terristeris L.
Provedor de dados: 60
Autores: Munir,Bushra; Qadir,Abdul; Tahir,Mohammad.
ABSTRACT This study was conducted to find out the ameliorative properties of Tribulus terristeris L (TT) on BPA induced spermatotoxicity in male albino rats. Mature male albino rats were divided into five groups, Group A was taken as control for comparison group, whereas the other four groups namely B(vehicle control), C (toxic), D (preventive control) and Group E (amelioration group) received distilled water, olive oil, BPA, TT, and (TT + BPA) respectively. Macroscopic results revealed decreased body weight of rats, weight of testes, and the relative tissue weight index (RTWI) in BPA induced group. Hormonal (testosterone) assay results revealed the decreased values of BPA treated group. Microscopic examination of testis of BPA treated rats showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bisphenol A/negative effects; Tribulus terristeris L./properties; Spermatotoxicity; Testosterone.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300611

Oxidative stress and histopathologic biomarkers of exposure to bisphenol-A in the freshwater fish, Ctenopharyngodon idella
Provedor de dados: 60
Autores: Faheem,Mehwish; Lone,Khalid Parvez.
ABSTRACT Bisphenol-A (BPA) belongs to the family of endocrine disrupting chemicals (EDCs) and it is used in the production of polycarbonate plastic and epoxy resins. The reproductive toxicity of BPA is well documented but it also exerts its toxic effects through multiple pathways especially by inducing a state of oxidative stress and causing damage to the vital organs. In the present study, histopathologic and oxidative damage caused by BPA in liver and kidneys of fresh water cyprinid, Ctenopharyngodon idella was evaluated. LC50 of BPA for Ctenopharyngodon idella was determined by probit regression analysis. Fish were exposed to a sublethal concentration of BPA i.e. 3.2 ppm (1/2 LC50) for 14 days. Histologic studies revealed that BPA caused degenerative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bisphenol-A/effects; Histopathology; Ctenopharyngodon idella/endocrine disrupting chemicals/Oxidative stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300624

1,3,4-Thiadiazole and 1,2,4-triazole-3(4 H )-thione bearing salicylate moiety: synthesis and evaluation as anti- Candida albicans
Provedor de dados: 60
Autores: Radwan,Awwad Abdoh; Alanazi,Fares Kaed; Al-Agamy,Mohammed Hamed.
Abstract Dramatically increased occurrence of both superficial and invasive fungal infections has been observed. Candida albicans appear to be the main etiological agent of invasive fungal infections. The anti-C. albicans activity of thiosemicarbazide, 1,3,4-Thiadiazole, and 1,2,4-triazole-3(4H)-thione compounds (compounds 3-23) were investigated. The MIC values of thiadiazole and triazole derivatives 10-23 were in the range of 0.08-0.17 µmol mL-1, while that of fluconazole was 0.052 µmol mL-1. Compound 11 (5-(2-(4-chlorobenzyloxy)phenyl)-N-allyl-1,3,4-thiadiazol-2-amine) and compound 18 (5-(2-(4-chlorobenzyloxy)phenyl)-4-allyl-2H-1,2,4-triazole-3(4H)-thione) were found to be the most active compounds, with MIC values of 0.08 µmol mL-1. The newly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anti-Candida/docking studies; Thiadiazole; Triazole.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100614

Lupeol and its esters: NMR, powder XRD data and in vitro evaluation of cancer cell growth
Provedor de dados: 60
Autores: Silva,Aline Teixeira Maciel e; Magalhães,Cássia Gonçalves; Duarte,Lucienir Pains; Mussel,Wagner da Nova; Ruiz,Ana Lucia Tasca Gois; Shiozawa,Larissa; Carvalho,João Ernesto de; Trindade,Izabel Cristina; Vieira Filho,Sidney Augusto.
ABSTRACT The triterpene lupeol (1) and some of its esters are secondary metabolites produced by species of Celastraceae family, which have being associated with cytotoxic activity. We report herein the isolation of 1, the semi-synthesis of eight lupeol esters and the evaluation of their in vitro activity against nine strains of cancer cells. The reaction of carboxylic acids with 1 and DIC/DMAP was used to obtain lupeol stearate (2), lupeol palmitate (3) lupeol miristate (4), and the new esters lupeol laurate (5), lupeol caprate (6), lupeol caprilate (7), lupeol caproate (8) and lupeol 3’,4’-dimethoxybenzoate (9), with high yields. Compounds 1-9 were identified using FT-IR, 1H, 13C-NMR, CHN analysis and XRD data and were tested in vitro for proliferation of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lupeol/in vitro evaluation; Lupeol ester; K-562 cells; XRD method; Antiproliferative effect.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300621

Gastroprotective activity of the hydroethanolic extract and ethyl acetate fraction from Kalanchoe pinnata (Lam.) Pers.
Provedor de dados: 60
Autores: Sobreira,Flávia; Hernandes,Leandro Santoro; Vetore-Neto,Alberto; Díaz,Ingrit E. Collantes; Santana,Fernanda Carvalho de; Mancini-Filho,Jorge; Bacchi,Elfriede Marianne.
ABSTRACT Peptic ulcers are an important pathology, and the search for safer and more effective treatment methods is of paramount importance. In this study, we assess the gastroprotective effects of the hydroethanolic extract (HE) and ethyl acetate fraction (EAF) from Kalanchoe pinnata leaves against an ethanol/HCl-induced ulcer model in rats. The HE reduced gastric lesions by approximately 47% (400 mg/kg). A significant inhibition of the gastric lesions by 50% was observed after pretreatment with the EAF (200 mg/kg). Quercetrin and quercetin 3-O-α-L-arabinopyranosyl-(1→2)-α-L-rhamnopyranoside were isolated and identified in the flavonoid fraction (EAF) by HPLC and NMR analyses because this fraction showed the highest gastroprotective effect. This fraction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gastric ulcer/study/rats; Gastric ulcer/treatment; Kalanchoe pinnata/chromatographic profile; Kalanchoe pinnata/gastroprotective activity; Quercetrin; Quercetin 3-O-α-L-arabinopyranosyl-(1→2)-α-L-rhamnopyranoside.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100616

Effect of herb-drug interactions of Bacopa monnieri Linn. (Brahmi) formulation on the pharmacokinetics of amitriptyline in rats
Provedor de dados: 60
Autores: Khurshid,Fowad; Govindasamy,Jeyabalan; Khalilullah,Habibullah; Nomani,Mohammed Shivli; Shahid,Mudassar; Ain,Md Ruhal; Alsultan,Mohammad Sultan.
ABSTRACT Interactions between herbs and drugs may increase or decrease the pharmacological or toxicological effects of either component. Experimental data on the pharmacokinetic interactions between herbal products and drugs are limited. This study attempted to investigate the effect of Bacopa monnieri Linn. (Brahmi) formulation on the pharmacokinetics of amitriptyline in rats. In this study, rats were randomly divided into two groups (n = 6 each) which were served as a control (amitriptyline alone) and treatment group (amitriptyline with B. monnieri), respectively. Rats in the treatment group received B. monnieri (31 mg/kg/day) whereas the control group received normal saline by oral gavage for seven days before a single intragastric administration of 25...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbal drug interaction; Bacopa monnieri/effects; Amitriptyline/pharmacokinetics; CYP450; Bioavailability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400610

A stability-indicating HPLC-PDA method for the determination of ferulic acid in chitosan-coated poly(lactide-co-glycolide) nanoparticles
Provedor de dados: 60
Autores: Lima,Isabela Angeli de; Khalil,Najeh Maissar; Mainardes,Rubiana Mara.
ABSTRACT The development and validation of a simple and efficient method for the quantification of ferulic acid in poly (D,L-lactide-co-glycolide) (PLGA) nanoparticles coated with chitosan (CS) by reverse phase high performance liquid chromatography coupled to photodiode array detection was described. For the chromatographic analysis, a reverse phase C-18 column was used, mobile phase consisting of acetonitrile and 0.5% acetic acid (37:63, v/v), isocratically eluted at a flow rate of 1 mL/min. Drug determination was performed at 320 nm. The method was validated in terms of the selectivity, linearity, precision, accuracy, robustness, limits of detection and quantification. The method was linear in the range of 10 to 100 μg/mL (r=0.999) and presented limit...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nanoparticles; Ferulic acid/encapsulation efficiency; Ferulic acid/quantification; Stability; High performance liquid chromatography/validation; PLGA-poly(lactide-co-glycolide)/nanoparticles; Chitosan.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200627

Continuous wavelet transform methods for the simultaneous determinations and dissolution profiles of valsartan and hydrochlorothiazide in tablets
Provedor de dados: 60
Autores: Dinç,Erdal; Üstündağ,Özgür; Tilkan,Günseli Yüksel; Türkmen,Berna; Özdemir,Nurten.
ABSTRACT Continuous wavelet transform (CWT) was proposed for the simultaneous determination and dissolution profiles of valsartan (VAL) and hydrochlorothiazide (HCT) in tablets, without the use of a chemical separation procedure. The CWT approach was applied to the original UV spectra and their ratio spectra in the optimal wavelength ranges. After testing several wavelet families, Mexican hat function-CWT and Daubechies7-CWT (mexh-CWT and db7-CWT, respectively) were found to be suitable for the transformation of the original UV spectra. In the following procedure, mexh-CWT and Coiflets3-CWT (coif3-CWT) were found to be appropriate for the signal analysis of ratio spectra (RS) of VAL/HCT and HCT/VAL. Calibration graphs for VAL and HCT were obtained by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spectral Continuous Wavelets Transform; Valsartan; Hydrochlorothiazide; Binary mixture/tablets.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100618

Hydroethanolic  Allium sativum extract accelerates excision wound healing: evidence for roles of mast-cell infiltration and intracytoplasmic carbohydrate ratio
Provedor de dados: 60
Autores: Farahpour,Mohammad Reza; Hesaraki,Saeed; Faraji,Darab; Zeinalpour,Rasoul; Aghaei,Mohammad.
ABSTRACT The present study was designed to evaluate the in vivo effect of Allium sativum (garlic) hydroalcoholic extract on wound healing in rats. For this purpose, 72 mature Wistar rats were divided into four groups (n=18/each) to receive no treatment, placebo, Cicalfate(r), or 2% Allium sativum (AS) extract, administered topically to the wound area, for 21 days. Following the experimental period, tissue samples were dissected out and underwent to histopathological analyses. Fibroblasts, fibrocytes, mast cells, intra-cytoplasmic carbohydrate ratio, neovascularization, collagen deposition, and re-epithelialization were analyzed in all groups. Animals in the treated groups showed significant enhancement in fibroblast, fibrocyte, and mast-cell distribution....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium sativum/effects/rats; Allium sativum/wound healing/study; Allium sativum/mast cells; Allium sativum/angiogenesis; Intra-cytoplasmic carbohydrate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100605

The mechanism of drug interactions of a selected antiarrhythmic drug with metformin, in different animal models
Provedor de dados: 60
Autores: Khan,Kayamkani Abedulla; Satyanarayana,Sreemantula; Kumar,Kilari Eswar.
ABSTRACT This study was carried out to understand the influence of a selected antiarrhythmic drug on the pharmacodynamics and pharmacokinetics of an antidiabetic drug in animal models. Pharmacodynamic and pharmacokinetic responses were determined by measurements of blood glucose and serum insulin and serum metformin to drug interactions between disopyramide and metformin. Single dose and multi dose studies showed that the maximum blood glucose reductions in normal and diabetic rats were at the 6th hour, and in rabbits at the 3rd hour. Glucose-insulin homeostasis was evaluated to assess the safety and effectiveness of the combination. There was a marginal increase in the pharmacokinetic parameters of metformin with multiple dose treatments of disopyramide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disopyramide/pharmacokinetic interactions/pharmacodynamic; Metformin/ pharmacokinetic interactions/pharmacodynamic; Drug Interactions; Hypoglycaemia; Diabetes mellitus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400601

Antioxidant and cytotoxic activity of Tecoma stans against lung cancer cell line (A549)
Provedor de dados: 60
Autores: Robinson,Jayachandran Philip; Suriya,Kumaresan; Subbaiya,Ramasamy; Ponmurugan,Ponnusamy.
ABSTRACT Human have been constantly using plants and plant products to overcome many diseases. The antioxidant property of the plant sources is studied to obtain an efficacious drug against cancer. The objectives of the present study is to evaluate the antioxidant and cytotoxic activity of the Tecoma stans extracts against lung cancer cell line in comparison with vincristine drug. The antioxidant activity was studied using the standard DPPH assay and the cytotoxic activity using MTT assay. DPPH assay results show that methanolic extract of T. stans in higher concentration show better antioxidant potential than the standard L-ascorbic acid. They exhibited strong antioxidant potential at 20 µg/mL concentration. The absorbance at 517 nm showed that in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tecoma stans/extract/cytotoxicity; Tecoma stans/extract/antioxidant activity; Free radical scavenging; Plant extracts; Lung cancer cell line/study/drugs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300605

Floating ability and drug release evaluation of gastroretentive microparticles system containing metronidazole obtained by spray drying
Provedor de dados: 60
Autores: Nohemann,Laís; Almeida,Marina Penteado de; Ferrari,Priscileila Colerato.
Abstract Gastroretentive floating microparticles were developed and evaluated for the controlled metronidazole delivery for treatment of gastric disease. Floating microparticles, varying in proportions of chitosan and hydroxypropyl methylcellulose or ethylcellulose, were obtained by spray drying. Floating microparticles were characterized by physicochemical and in vitro studies, according to their floating ability and drug delivery. Microparticles presented mean diameter from 1.05 to 2.20 µm. The infrared spectroscopy confirmed the drug encapsulation and showed no chemical linkage between microparticles components. X-ray diffraction showed changes in the drug`s solid state, from crystalline to amorphous, indicating partial drug encapsulation, due to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floating microparticle; Chitosan; Ethylcellulose; Hydroxypropyl methylcellulose; Controlled drug delivery.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100611

Liposomes as potential carriers for ketorolac ophthalmic delivery: formulation and stability issues
Provedor de dados: 60
Autores: Mehanna,Mohammed Maher; El-Kader,Nouran Abd; Samaha,Magda Wadih.
ABSTRACT Drug delivery to treat ocular disorders locally is a challenging endeavor. Traditional ocular dosage form - eye drops - exhibits poor availability, consequently inefficient therapeutic response. The objective of the study was to formulate and characterize a ketorolac tromethamine ocular system with a prolonged release pattern based on liposomes as a vesicular carrier and to design once daily liquid preparation realizing the thermal in situ gelation principle. Liposomes were prepared by film hydration method. The influence of cholesterol concentration, pH and volume of hydration medium, and type and concentration of charging imparting agents were studied. Liposomes were characterized via, morphological examination, vesicular size, and encapsulation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ketorolac/characterization/formulation; Liposomes/stability study; Ocular delivery; Thermosensitive gel; Prolonged release.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200618

Hydrolyzed collagen interferes with  in vitro photoprotective effectiveness of sunscreens
Provedor de dados: 60
Autores: Peres,Daniela D'Almeida; Hubner,Alexandra; Oliveira,Camila Areias de; Almeida,Tania Santos de; Kaneko,Telma Mary; Consiglieri,Vladi Olga; Pinto,Claudinéia Aparecida Sales de Oliveira; Velasco,Maria Valéria Robles; Baby,André Rolim.
ABSTRACT The chronological skin aging is a progressive and natural process with genetic and physiological changes. However, ultraviolet (UV) radiation may accelerate the oxidative stress, generating carcinogenesis and photoaging. Natural compounds and their applications are considered a trend in the cosmetic market. The protein-based film-forming compounds play an important role, once it collaborates for the better distribution of sunscreens on the skin. Here we investigated the in vitro photoprotective effectiveness of sunscreens containing the hydrolyzed collagen associated with UVA, UVB and/or inorganic filters. Sunscreens were developed with octocrylene (7.5%), butyl methoxydibenzoylmethane (avobenzone) (3.0%) and/or titanium dioxide (5.0%), associated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydrolyzed collagen/protective effects; Photoprotector/effectiveness; Photoprotector/in vitro study; Sun protection factor; Sunscreen/UV filter; Critical wavelength.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200611

Pharmacological and toxicological investigations of etodolac loaded gum katira microspheres prepared by W1/O/W2 emulsion solvent evaporation technique in rats
Provedor de dados: 60
Autores: Ruhidas,Biswajit; Ray,Rajat; Naskar,Debjyoti; Chakra,Biplab Kumar; Chatterjee,Tapan Kumar.
ABSTRACT Etodolac is a non-steroidal anti-inflammatory drug (NSAID) and approved by USFDA as a COX2 inhibitor. Although etodolac therapy provides clinical benefits, it is associated with upper gastrointestinal (GI) tract complications also. Etodolac loaded gum Katira microsphere (ELGKM) was prepared by W1/O/W2 emulsion solvent evaporation technique. The gastric irritation properties of orally administered pure etodolac, ELGKM and blank microspheres (without etodolac) were evaluated in experimental rats treated for 6 days. The stomach examination and biochemical investigation of stomach tissue of treated rats indicated that ELGKM formulation remarkably reduced ulcerogenecity as compared to pure etodolac. The anti-inflammatory activities of pure etodolac and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Etodolac/inflammatory conditions; Etodolac/physicochemical characterization; Gum Katira/microspheres; Pain therapy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400619

Physiological quality, anatomy and histochemistry during the development of carrot seeds ( Daucus carota L.)
Provedor de dados: 64
Autores: Miranda,Rafaela Marques de; Dias,Denise Cunha Fernandes dos Santos; Picoli,Edgard Augusto de Toledo; Silva,Patrícia Pereira da; Nascimento,Warley Marcos.
ABSTRACT The adequate time for carrot seed harvest influences its physiological quality. The objective of this study was to evaluate physiological, anatomical and histochemical changes in carrot seeds harvested at different stages of development and to establish the most appropriate harvest time. Secondary umbels were harvested at 14, 21, 28, 35, 42, 49, 56 and 63 days after anthesis (DAA). For seed anatomical and histochemical characterization, sections were stained with Toluidine blue stain, Xylidine Ponceau, Lugol’s iodine, Sudan Black B and submitted to polarized light. Seed moisture content, seed dry matter, germination, first count, emergence percentage and emergence speed index of seedlings were evaluated. Cultivar Brasília carrot seeds at 14 DAA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maturity; Harvest; Reserve substances; Germination; Vigor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200169

Arbuscular mycorrhizal fungal communities in an iron mining area and its surroundings: Inoculum potential, density, and diversity of spores related to soil properties
Provedor de dados: 64
Autores: Teixeira,Anita Fernanda dos Santos; Kemmelmeier,Karl; Marascalchi,Matheus Nicoletti; Stürmer,Sidney Luiz; Carneiro,Marco Aurélio Carbone; Moreira,Fatima Maria de Souza.
ABSTRACT Arbuscular mycorrhizal fungi (AMF) interact symbiotically with most plant species, facilitating revegetation of areas under rehabilitation. The aim of this study was to evaluate the inoculum potential, density, and diversity of AMF spores in five environments, as well as the relation of species with soil properties. Soil samples were collected in five environments in a mining area and its surroundings in the Quadrilátero Ferrífero, Minas Gerais (Brazil): tailings piles in rehabilitation with grass, canga, Cerrado, native forest, and eucalyptus plantation; these samples were subjected to chemical and physical analyses. Spores were directly extracted from field samples and from trap cultures (TCs) established in two locations in the Southeast and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tailings piles; Glomeromycota; Ironstone; Rehabilitation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500511

Zinc, copper and manganese availability in soils treated with alkaline sewage sludge from Paraná state (Brazil)
Provedor de dados: 64
Autores: Dalpisol,Maristela; Serrat,Beatriz Monte; Motta,Antonio Carlos Vargas; Poggere,Giovana Clarice; Bittencourt,Simone; Barbosa,Julierme Zimmer.
ABSTRACT In Paraná, most of the sludge generated in sewage treatment plants is subjected to the prolonged alkaline stabilization process. Although it is known that the alkaline sewage sludge contains micronutrients such as Zn, Cu and Mn, little is known about the availability of these elements in soils treated with this type of sewage sludge. Thus, the objective of the study was to evaluate the influence of alkaline sewage sludge from Paraná on Zn, Cu and Mn availability in soils. Twenty sewage treatment plants were selected throughout Paraná, where alkaline sewage sludge and the most representative agricultural soil of the each region were collected. Each soil was incubated for 60 days with alkaline sewage sludge rates (0, 10, 20, 40, and 80 Mg ha-1) from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acid soils; Organic residues; Recycling; Micronutrients.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100081

Photosynthetic and enzymatic metabolism of Schinus terebinthifolius Raddi seedlings under water deficit
Provedor de dados: 64
Autores: Nunes,Danieli Pieretti; Scalon,Silvana de Paula Quintão; Dresch,Daiane Mugnol; Gordin,Carla Regina Baptista.
ABSTRACT Schinus terebinthifolius Raddi is a tree species that can be used in the recovery of degraded areas, as it exhibits rapid growth and has a very expansive root system, facilitating water uptake from the deeper layers of the soil. The objective of this study was to evaluate photosynthesis and enzymatic activity in S. terebinthifolius seedlings under conditions of water deficit and their potential to recover following re-irrigation. The experiment was conducted in a greenhouse under a plastic covering where plants were distributed into two groups: Group 1 - control plants, where irrigation was maintained at 70% of the water retention capacity, and Group 2 - stressed plants, where irrigation was suspended until the photosynthetic rate neared zero,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gas exchanges; Antioxidant enzyme; Stress deficit.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600676

Egg quality assessment at different storage conditions, seasons and laying hen strains
Provedor de dados: 64
Autores: Feddern,Vivian; Prá,Marina Celant De; Mores,Rúbia; Nicoloso,Rodrigo da Silveira; Coldebella,Arlei; Abreu,Paulo Giovanni de.
ABSTRACT Eggs are one of nearly perfect protein foods, offering nutrients of great biological value. However, during storage, egg albumen and yolk components may alter and deteriorate egg quality. Therefore, the aim of this work was to assess egg quality during 9-week storage. Parameters such as Haugh unit, weight loss, egg width and length, specific gravity, yolk and albumen dimensions and their pH were evaluated weekly. A total of 270 eggs (n=5) collected from two different hen strains were evaluated under room (20 to 35 °C in summer; 11.2 to 29.7 °C in autumn) and refrigerated (0 to 5 °C in summer; -3.1 to 6.5 °C in autumn) temperatures. For storage time, an unfolding analysis was accomplished by regression analysis using orthogonal polynomials. As a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weight loss; Shell color; Haugh unit; Yolk index.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300322

Microbial additives in the composting process
Provedor de dados: 64
Autores: Ribeiro,Noelly de Queiroz; Souza,Thiago Pereira; Costa,Lívia Martinez Abreu Soares; Castro,Cibelli Paula de; Dias,Eustáquio Souza.
ABSTRACT Composting is the process of natural degradation of organic matter carried out by environmental microorganisms whose metabolic activities cause the mineralization and partial humification of substances in the pile. This compost can be beneficially applied to the soil as organic fertilizer in horticulture and agriculture. The number of studies involving microbial inoculants has been growing, and they aim to improve processes such as composting. However, the behavior of these inoculants and other microorganisms during the composting process have not yet been described. In this context, this work aimed to investigate the effects of using a microbial inoculum that can improve the composting process and to follow the bacterial population dynamics...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High Resolution Melt (HRM); Bacteria; Microbial ecology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200159

Genetic variability in elite barley genotypes based on the agro-morphological characteristics evaluated under irrigated system
Provedor de dados: 64
Autores: Amabile,Renato Fernando; Faleiro,Fábio Gelape; Capettini,Flávio; Peixoto,José Ricardo; Sayd,Ricardo Meneses.
ABSTRACT Recently, researches have shown that the Brazilian savannah has a great potential to supply the demand for barley grains. The purpose of this study was to assess the genetic variability in 39 elite barley (Hordeum vulgare L.) genotypes based on the agro-morphological traits of a crop irrigated in the savannah system. An irrigation experiment in the design of complete randomized block with four replicates was conducted at Federal District - Brazil. The evaluated traits were: distance from the last knot to the rachis, distance from the flag leaf to rachis, spike length, number of grains by ear, flag leaf area, plant height, silking, lodging, grain yield, thousand-seed weight, protein content and grain commercial classification. After using analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic diversity; Hordeum vulgare L.; Genetic resources; Savannah.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200147

Soil compaction caused by harvest and logging operations in eucalyptus forests in coarse-textured soils from northeastern Brazil
Provedor de dados: 64
Autores: Andrade,Maria Luiza de Carvalho; Tassinari,Diego; Dias Junior,Moacir de Souza; Martins,Ricardo Previdente; Rocha,Wellington Willian; Souza,Zélio Resende de.
ABSTRACT Planted forests occupy more than 6.5 million ha in Brazil, where harvest and logging operations are performed with increasingly heavier machinery, increasing the risk of soil compaction. Soil compaction can be avoided if soil load bearing capacity is not exceeded, what makes it important to assess both the soil strength and the impact of different operations. The aim of this study was to evaluate the load bearing capacity of some coarse textured soils (two Hapludult and one Haplorthod) in two soil horizons (BA and B), from northeastern Brazil; and to assess the impact of harvest and logging operations performed with harvester and forwarder. Although the Haplorthod presented higher load bearing capacity in both the BA horizon (for the whole...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Harvester; Forwarder; Precompression stress; Soil load bearing capacity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200191

Soil susceptibility to compaction under use conditions in southern Brazil
Provedor de dados: 64
Autores: Mazurana,Michael; Levien,Renato; Inda Junior,Alberto Vasconcellos; Conte,Osmar; Bressani,Luiz Antônio; Müller,Jonatan.
ABSTRACT The degree of soil compaction is intensified by its inadequate management, compaction being variable depending on soil type since even under identical management conditions, different types have different abilities to withstand load. The objective of this study was to evaluate the susceptibility to compaction of different classes of soils under no-tillage (NT) croping system compared to the original condition. Thus, i) soils with the same source material have distinct resistance to compression with increased NT adoption time; ii) the most sensitive indicators of this change are the ratios mass:volume and volume:volume and; iii) there is a relationship between resistance and compaction susceptibility with the amount and type of oxide. Soil samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil load-bearing capacity; Minerals; Organic matter.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100060

Oviposition preference and larval performance of sugarcane borer in eight sugarcane genotypes
Provedor de dados: 64
Autores: Pimentel,Guilherme Vieira; Tomaz,Adriano Cirino; Brasileiro,Bruno Portela; Peternelli,Luiz Alexandre; Barbosa,Márcio Henrique Pereira.
ABSTRACT The sugarcane borer Diatraea saccharalis Fabr. (Lepidoptera: Crambidae) is one of the most important pests of sugarcane in the Americas. The purpose of this study was to assess multiple resistance traits in eight sugarcane genotypes against D. saccharalis, including five commercial cultivars and three exotic germplasm with potential to serve as resistance sources against this pest. The oviposition preference was assessed by using both free-choice and non-choice tests. The performance of both early stage larvae feeding on the leaves and late stages larvae feeding within the stalks were also assessed. There were differences among genotypes for number of both eggs and egg cluster in the free-choice test while no differences in non-choice test were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Diatraea saccharalis; Host-plant resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400439

Freshwater quality of a stream in agricultural area where organic compost from animal and vegetable wastes is used
Provedor de dados: 64
Autores: Saran,Luciana Maria; Meneghine,Aylan Kener; Célico,Amanda Schimidt; Pinheiro,Daniel Guariz; Alves,Lucia Maria Carareto.
ABSTRACT Organic compost from biomass residues constitutes a viable alternative for partial or total replacement of mineral fertilizers for growing vegetables. This study evaluated the effects of compost on the water quality of a stream used mainly for irrigation of agricultural crops cultivated in nearby soil that has been treated with organic compost produced by carcasses, animal and vegetable waste for the last ten years. We sampled water biannually for two years, 2013 and 2014, from five locations along the stream. Physical variables and some chemical variables were analyzed. We also analyzed the total number of coliforms (Escherichia coli). Bacterial populations were compared by carbon substrate consumption. Total phosphorus contents in the samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EcoPlate; Carcasses and animal waste; Agriculture; Surface water; Composting.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300263

Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios
Provedor de dados: 64
Autores: Bispo,Diêgo Faustolo Alves; Silva,Marx Leandro Naves; Marques,João José Granate de Sá e Melo; Bechmann,Marianne; Batista,Pedro Velloso Gomes; Curi,Nilton.
ABSTRACT Identifying and ranking nutrient loss risk areas are important steps towards integrated catchment management. This study aimed to apply the P index model at the Posses catchment, south of the state of Minas Gerais, Brazil. We applied the P index for the current land use at the Posses catchment and for two hypothetical scenarios: scenario 1, in which P fertilizer was applied to all land uses, except for native forests; and scenario 2, which considered the use of P fertilizer as in scenario 1, and that the Environmental Protection Areas referring to the riparian forests and springs were totally restored. Considering current land use, almost the whole catchment area (91.4%) displayed a low P loss risk. The highest P index was associated to croplands...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: P index; Nutrient loss; Water erosion; Land use management; Environmental services.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500565

Influence of pH on the efficacy of ozonated water to control microorganisms and its effect on the quality of stored strawberries (Fragaria x ananassa Duch.)
Provedor de dados: 64
Autores: Ferreira,Wallas Felippe de Souza; Alencar,Ernandes Rodrigues de; Alves,Hanna; Ribeiro,Jaqueline Lamounier; Silva,Caroline Rosa da.
ABSTRACT Ozonation has been proposed as an alternative for the post-harvest treatment of plant products. Therefore, the objective of this study was to evaluate the influence of the pH on the efficacy of ozonated water to control microorganisms and to determine the possible effects of ozone on the quality of stored strawberries. To evaluate the influence of pH on ozonated water in Portola variety strawberries, the strawberries were divided into six batches. Three batches were exposed to ozonated water and three batches were exposed to non-ozonized water with different pH levels and an immersion time of 5 min. The pH values used were 3.0, 6.5 and 8.7. After the ozonation, the fruits were stored in a cold chamber at 5 °C for 6 days, and analyses were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ozone; Microbiological quality; Qualitative changes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600692

Green manuring with Calotropis procera for the production of coriander in two growing seasons
Provedor de dados: 64
Autores: Souza,Ênio Gomes Flôr; Souza,Almir Rogerio Evangelista de; Soares,Enielson Bezerra; Barros Júnior,Aurélio Paes; Silveira,Lindomar Maria da; Bezerra Neto,Francisco.
ABSTRACT The use of spontaneous species of the Caatinga biome can contribute significantly to the nutritional demand of vegetable crops, thereby providing an agroecological and sustainable form of production. The objective of this research was to determine the effects of different biomasses of Calotropis procera (rooster tree) and times of incorporation into the soil of green manure during two growing seasons on the agronomic performance of coriander cv. Verdão produced in Serra Talhada, a semi-arid region of Pernambuco, Brazil. The experimental design was randomized blocks with three replications. The treatments were arranged in a 4 x 4 factorial scheme, with the first factor consisting of biomass amounts of C. procera (5.4, 8.8, 12.2 and 15.6 t ha-1 on a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coriandrum sativum L.; Organic cultivation; Rooster tree.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500533

Total carotenoids and antioxidant activity of fillets and shells (in natura or cooked) of “Vila Franca” shrimp (Litopenaeus Schmitti) in different intervals of storage under freezing
Provedor de dados: 64
Autores: Lira,Giselda Macena; Lopez,Ana Maria Queijeiro; Firmino,Guilherme Oliveira; Santos,Suzan Diniz; Bezerra,Ranilson de Souza.
ABSTRACT Shrimps are sources of carotenoids, astaxanthin is the predominant, responsible for their special and desirable properties, as well as for their instability under heat treatment during the domestic preparation, industrial processing or storage under freezing. These can cause discoloration and reduce the beneficial health properties. This study aimed to evaluate the effect of heat treatment and storage under freezing (0, 45 and 90 days) on the levels of total carotenoids and stability of the antioxidant activity of ethanolic extracts of fillets and shells, raw and cooked, of the white shrimp (“Vila Franca”) Litopenaeus schmitti (Burkenroad, 1938). The antioxidant ability of the extracts was evaluated using the radicals DPPH•...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Free radicals; Functional food; Biomolecules oxidation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100094

Nickel adsorption and desorption in an acric oxisol as a function of pH, ionic strength and incubation time
Provedor de dados: 64
Autores: Mellis,Estêvão Vicari; Casagrande,José Carlos; Soares,Marcio Roberto.
ABSTRACT Although nickel (Ni) has both important potential benefits and toxic effects in the environment, its behavior in tropical soils has not been well studied. Nickel adsorption-desorption in topsoil and subsoil samples of an acric Oxisol was studied at three pH values (from 3.0 to 8.0). Adsorption-desorption isotherms were elaborated from experiments with increasing Ni concentration (5 to 100 mg L-1), during 0, 4, and 12 weeks, using CaCl2 0.01 and 0.1 M as electrolytic support in order to also verify the effect of Ni-soil time contact and of ionic strength on the reaction. Experimental results of Ni adsorption fitted Langmuir model, which indicated that maximum Ni adsorption (71,440 mg kg-1) occurred at subsoil, after 12 weeks. Nickel affinity (KL)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorption; Bioavailability; Soil pollution; Heavy metal.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100032

Eficácia de milho transgênico tratado com inseticida no controle da lagarta-do-cartucho no milho safrinha no estado de São Paulo, Brasil
Provedor de dados: 64
Autores: Michelotto,Marcos Doniseti; Crosariol Neto,Jacob; Pirotta,Melina Zacarelli; Duarte,Aildson Pereira; Feitas,Rogério Soares de; Finoto,Everton Luis.
RESUMO Diversas tecnologias de milho geneticamente modificado (Bt) foram liberadas comercialmente desde 2007 visando principalmente o controle da lagarta-do-cartucho, Spodoptera frugiperda (Lepidoptera: Noctuidae). O objetivo deste trabalho foi avaliar a eficiência de híbridos transgênicos (Bt) e convencionais (não Bt) no controle lagarta-do-cartucho, submetidas ou não a inseticidas. Para isso, foram conduzidos ensaios em três localidades do estado de São Paulo nas safrinhas de 2009, 2010 e 2011, com delineamento experimental de blocos casualizados, em esquema fatorial 5x4, 5x4 e 8x4, respectivamente. O primeiro fator correspondeu ao número de híbridos comerciais de diferentes empresas. O segundo fator foi constituído pela utilização de diferentes manejos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Spodoptera frugiperda; Manejo-de-pragas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200128

Assessment of watermelon accessions for salt tolerance using stress tolerance indices
Provedor de dados: 64
Autores: Ekbic,Ercan; Cagıran,Cagri; Korkmaz,Kursat; Kose,Malik Arsal; Aras,Veysel.
ABSTRACT Salt stress is the most significant constraint for agricultural production in arid and semi-arid regions. Thus, genetically improved stress-tolerant varieties are needed for the future. The identification of salt-tolerant genotypes is the starting point for such breeding studies. This study was conducted to determine and assess the tolerance of different watermelon genotypes under saline conditions. Twenty-two watermelon genotypes and accessions were grown in pots with 3 kg of soil in four saline stress conditions (0 mmol kg-1 as the control, 25, 50 and 100 mmol kg-1 NaCl). The detrimental effects of salt stress on the plants were evident with increasing doses of NaCl. Stress indices calculated over the plant dry weights under the 100 mmol kg-1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrullus lanatus; Local varieties; Stress tolerance attributes; Tolerance for salt stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600616

Date palm micropropagation: Advances and applications
Provedor de dados: 64
Autores: Al-Khayri,Jameel Mohammed; Naik,Poornananda Madhava.
ABSTRACT Date palm (Phoenix dactylifera L.) is a fruit tree resilient to adverse climatic conditions predominating in hot arid regions of the Middle East and North Africa. The date fruit contains numerous chemical components that possess high nutritional and medicinal values. Traditional propagation by offshoots is inefficient to satisfy current demands for date palm trees. Alternatively, micropropagation provides an efficient means for large-scale propagation of date palm cultivars. Both somatic embryogenesis and organogenesis, either directly or indirectly though the callus phase, have been demonstrated in date palm in vitro regeneration. Culture initiation commonly utilizes shoot-tip explants isolated from young offshoots. Recently, the immature...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cryopreservation; Somatic embryogenesis; Somaclonal variation; Organogenesis; Molecular marker.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400347

Microwave-assisted extraction in dry fruit of andean species Vaccinium meridionale: Experimental conditions on the recovery of total polyphenols
Provedor de dados: 64
Autores: Espinosa,Wilfred Edilberto; Garzón,Luis Carlos Arturo; Medina,Oscar Julio.
ABSTRACT Due to their nutraceutical properties, the fruits of the species Vaccinium meridionale, which inhabit the Andean region, are of scientific interest. Microwave-assisted extraction has been applied to different vegetal matrices for to extract efficiently polyphenolic compounds. In this work we study in microwave assisted extraction processes, the effect on the extraction of total polyphenols in dried fruits of Vaccinium meridionale, using response surface methodology. The main objective of this research was to analyze the relationships between power, temperature, solid-liquid ratio, time and ethanol concentration in aqueous media on the effectiveness of total polyphenols recovery in dry fruits of Vaccinium meridionale. A central composite design...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Folin-Ciocalteu method; Response surface methodology (RSM); Nutraceutical properties.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600701

Canola yield under different irrigation frequencies and nitrogen levels in the Brazilian Cerrado
Provedor de dados: 64
Autores: Sanches,Arthur Carniato; Gomes,Eder Pereira; Azevedo,Edéria Pereira Gomes.
ABSTRACT In the Brazilian Cerrado, canola is grown in the off-season. During this period, rainfall is insufficient to ensure the maximum crop yield, and irrigation is needed. Canola has a high demand for nitrogen; thus, the application of this nutrient is essential for obtaining a good crop yield. Therefore, a study was conducted at the Federal University of Grande Dourados in 2012 and 2013 using a randomized block split-plot design with four repetition treatments in the plot that consisted of three irrigation frequencies (no irrigation, weekly irrigation and irrigation three times per week). Subplots received different doses of nitrogen: 0, 30, 60, 90 and 120 kg ha- 1 in 2012 and 0, 60, 120, 180 and 240 kg ha-1 in 2013. In both periods, the irrigation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica napus L.; Oil seeds; Tensiometry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400367

Performance of sunflower cultivars at different seeding periods in central Brazil
Provedor de dados: 64
Autores: Birck,Marcos; Dalchiavon,Flávio Carlos; Stasiak,Diogo; Iocca,Andréia Fernanda Silva; Hiolanda,Rosivaldo; Carvalho,Claudio Guilherme Portela.
ABSTRACT Sunflower (Helianthus annuus L.) is a very important crop for Brazil, and especially for Chapada do Parecis which is the largest domestic producer, because of its climate and soil conditions are adequate to the development of the specie. The performance of cultivars and sunflower seed sowing periods were evaluated in Central Brazil. Experimental design comprised an 8 x 5 factorial randomized complete block, with eight sunflower cultivars (Aguará 06, Aguará 04, MG 305, CF 101, SYN 3950HO, SYN 045, GNZ NEON and HELIO 251) and five decennial seeding periods, with three replicates. Analysis of variance and Scott-Knott´s test (p&lt;0.05) were applied. Cultivars GNZ NEON and SYN 045 provide the highest production rates in achenes, with higher value in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomic characteristics; Varietal performance; Planting date; Helianthus annuus; Plant productivity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100042

GGE Biplot projection in discriminating the efficiency of popcorn lines to use nitrogen
Provedor de dados: 64
Autores: Santos,Adriano dos; Amaral Júnior,Antônio Teixeira do; Kurosawa,Railan do Nascimento Ferreira; Gerhardt,Ismael Fernando Schegoscheski; Fritsche Neto,Roberto.
ABSTRACT Nitrogen is essential for sustaining life on the planet, and it is the most important nutrient for obtaining high agricultural production. However, their use leads to the release of nitrous oxide with a global warming potential 296 times higher than the CO2 molecule, making it a challenge to reduce their use in agriculture. The objective of this research was to identify efficient popcorn inbred lines and responsive nitrogen use and exhibit a good expansion volume. For this, 29 inbred lines from the Germplasm Collection of Darcy Ribeiro North Fluminense State University (UENF) were evaluated at two contrasting levels of nitrogen availability (low and ideal) at two representative locations in the north and northwest of the state of Rio de Janeiro,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Multivariate analysis; Abiotic stress; G x E interaction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100022

New rhizobial strains for velvet bean (Stizolobium aterrimum) evaluated under greenhouse and field conditions
Provedor de dados: 64
Autores: Santos,Ítalo Augusto Férrer Melo; Lira Junior,Mario de Andrade; Galdino,Adeneide Candido; Fracetto,Felipe José Cury; Fracetto,Giselle Gomes Monteiro.
ABSTRACT The selection of efficient rhizobia for the inoculation of velvet bean may increase the use of this plant as green manure, maximizing the addition of nitrogen (N) to the crop. This study aimed to select rhizobia that nodulate velvet bean more efficiently than do strains currently recommended and for the potential of rhizobia to compose an inoculant. A greenhouse experiment evaluated 39 strains using non-sterile soil and was followed by a field experiment with the five most effective strains under field conditions on a dystrocohesive Yellow Argisol. Both experiments included non-inoculated and inoculated treatments with currently recommended strains and N-fertilized controls. Nodules, root and shoot dry mass, shoot N concentration and accumulation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Green manure; Efficient rhizobia; Biological nitrogen fixation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400428

Agronomic performance of mini-tomato hybrids from dwarf lines
Provedor de dados: 64
Autores: Finzi,Rafael Resende; Maciel,Gabriel Mascarenhas; Silva,Ernani Clarete da; Luz,Jose Magno Queiroz; Borba,Monique Ellis Aguilar.
ABSTRACT Little is known about the commercial potential of mini-tomato hybrids obtained from one dwarf parent. Thus, our objective was to evaluate the agronomic performance of mini-tomato hybrids obtained by crossing a dwarf line (A) with normal lines with indeterminate (I), determinate (D) and semi-determinate (SD) growth habits. The experiment was conducted in a greenhouse at the Estação Experimental de Hortaliças at the Universidade Federal de Uberlândia-UFU in Monte Carmelo, Brazil. The experiment was completely randomized with 17 treatments and four repetitions. The genetic material consisted of 16 experimental mini-tomato hybrids from the tomato germplasm bank at UFU, and a commercial hybrid (Mascot) as a control. The following variables were used to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brix; Dwarfism; Growth habit; Solanum lycopersicum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100015

Textural behavior of gels formed by rice starch and whey protein isolate: Concentration and crosshead velocities
Provedor de dados: 64
Autores: Silva,Thiago Novaes; Costa,Angélica Ribeiro da; Garcia-Rojas,Edwin Elard.
ABSTRACT Fabricated food gels involving the use of hydrocolloids are gaining polpularity as confectionery/convenience foods. Starch is commonly combined with a hydrocolloid (protein our polyssacharides), particularly in the food industry, since native starches generally do not have ideal properties for the preparation of food products. Therefore the texture studies of starch-protein mixtures could provide a new approach in producing starch-based food products, being thus acritical attribute that needs to be carefully adjusted to the consumer liking. This work investigated the texture and rheological properties of mixed gels of different concentrations of rice starch (15%, 17.5%, and 20%) and whey protein isolate (0%, 3%, and 6%) with different crosshead...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Young’s modulus; Fracture; Stress; Rheology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600713

Hybrid kriging methods for interpolating sparse river bathymetry point data
Provedor de dados: 64
Autores: Batista,Pedro Velloso Gomes; Silva,Marx Leandro Naves; Avalos,Fabio Arnaldo Pomar; Oliveira,Marcelo Silva de; Menezes,Michele Duarte de; Curi,Nilton.
ABSTRACT Terrain models that represent riverbed topography are used for analyzing geomorphologic changes, calculating water storage capacity, and making hydrologic simulations. These models are generated by interpolating bathymetry points. River bathymetry is usually surveyed through cross-sections, which may lead to a sparse sampling pattern. Hybrid kriging methods, such as regression kriging (RK) and co-kriging (CK) employ the correlation with auxiliary predictors, as well as inter-variable correlation, to improve the predictions of the target variable. In this study, we use the orthogonal distance of a (x, y) point to the river centerline as a covariate for RK and CK. Given that riverbed elevation variability is abrupt transversely to the flow...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geostatistics; Spatial prediction; Regression kriging; Riverbed morphology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400402

Spacial distribution of fertigated coffee root system
Provedor de dados: 64
Autores: Vicente,Marcelo Rossi; Mantovani,Everardo Chartuni; Fernandes,André Luís Teixeira; Neves,Júlio César Lima; Figueredo,Edmilson Marques; Delazari,Fábio Teixeira.
ABSTRACT The development of coffee plant root system changes when subjected to drip irrigation and fertigation. This work aimed to evaluate the effects of different levels of fertigation on the development of coffee root system by drip irrigation in western Bahia. The experiment was carried out with Catuaí Vermelho IAC 144 coffee plants, of about 3.5 years of age, in the “Café do Rio Branco” farm, located in Barreiras - BA, and consisted of a complete randomized blocks design with 3 replicates. Treatments consisted of three levels of nitrogen and potassium fertilization (900/800, 600/500 and 300/250 kg ha-1 year-1 N and K2O), weekly distributed, by means of fertigation, throughout the process. After the fourth harvest, coffee root system was evaluated, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Irrigation; Nitrogen fertilization; Potassium fertilization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100072

When noise became information: State-of-the-art in biospeckle laser
Provedor de dados: 64
Autores: Braga Júnior,Roberto Alves.
ABSTRACT Laser was presented to science and industry in the 1960s and shortly became a useful tool in many areas, with applications based on its multiple characteristics such as coherence of light, which presents a phenomenon known as interference pattern, or speckle, when beam returns from an illuminated surface. Despite great application of speckle pattern, its residual presence, for example, in interferometric approaches was considered as a noise, demanding filtering. However, grains themselves became information as their dynamic changes in time started to be linked to biological sample activity. Dynamic laser speckle has been since then a phenomenon widely used to monitor biological activities in many areas from agriculture to medicine. It is known as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Optical metrology; Biosystems; Challenges.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400359

Preemergence herbicides on weed control in elephant grass pasture
Provedor de dados: 64
Autores: Brighenti,Alexandre Magno; Calsavara,Leonardo Henrique Ferreira; Varotto,Yago Vieira Guerra.
ABSTRACT Elephant grass (Pennisetum purpureum Schum.) is an important forage crop that has been proposed as a potential feedstock for bioenergy production. However, weed interference is a major factor limiting elephant grass production. Field experiments were conducted in 2014 and 2015 to evaluate preemergence herbicides for selective weed control in an elephant grass pasture. Herbicide treatments included atrazine + S-metolachlor, atrazine + simazine, ametryn, ethoxysulfuron, S-metolachlor, diuron + hexazinone, sulfentrazone, imazethapyr, and atrazine at label use rates. Weedy and weed-free treatments were included. Atrazine + S-metolachlor, atrazine + simazine, ametryn, ethoxysulfuron, S-metolachlor, sulfentrazone, and atrazine did not cause...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioenergy; Biofuel; Napier grass; Forage; Pennisetum purpureum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100052

Pre-harvest application of calcium chloride and chitosan on fruit quality and storability of ‘Early Swelling’ peach during cold storage
Provedor de dados: 64
Autores: Gayed,Ahmed Abdel Nabi Abdel; Shaarawi,Samar Abdeltawab Mohamed Ahmed; Elkhishen,Mohamed Abdelkader; Elsherbini,Nabil Raafat Mohamed.
ABSTRACT Studies related with the storage of peach fruits have received great relevance in Egypt. In this study, the effect of pre-harvest sprays of calcium chloride and chitosan, separately and in combination, on quality attributes and storability of peach fruits stored at 0±1 °C was studied. ‘Early Swelling’ peach trees were sprayed twice with 1% or 2% calcium chloride. The first spraying was at pea stage, while the second one was performed at 10 days before harvesting. Chitosan sprays were performed at 0.5 or 1%, alone or in combination with 1 and 2% calcium chloride, at 10 days before harvesting. Untreated trees served as control. Fruits were harvested at maturity stage, then packaged and stored at 0±1 °C and 85-90% of relative humidity. Fruit physical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative chemicals; CaCl2; Quality attributes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200220

Energy potential of residual maize biomass at different spacings and nitrogen doses
Provedor de dados: 64
Autores: Ambrosio,Rodrigo; Pauletti,Volnei; Barth,Gabriel; Povh,Fabrício Pinheiro; Silva,Dimas Agostinho da; Blum,Hilbert.
ABSTRACT Agricultural residual biomass is an important source of energy, and its production and quality vary according to the crop management. This study aimed to assess the effects of plant distribution and nitrogen fertilization on the energy production potential of the biomass of maize cultivated under no tillage. The field experiment was installed in southeast Brazil using five nitrogen rates (0, 60, 120, 180, and 240 kg ha-1) and two inter-row spacings (0.4 and 0.8 m). Grain yield, residual biomass productivity, and bioenergy potential in different parts of the plant (grain, stalk+leaf, husk, and cob) were assessed. No change in grain yield was observed using narrow row spacing. Stalk+leaf and husk productivity was higher using 0.8 m than using 0.4 m...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Renewable energy; Zea Mays (L.); Calorific value; Electricity; Macronutrients.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600626

Multiple linear regression and random forest to predict and map soil properties using data from portable X-ray fluorescence spectrometer (pXRF)
Provedor de dados: 64
Autores: Silva,Sérgio Henrique Godinho; Teixeira,Anita Fernanda dos Santos; Menezes,Michele Duarte de; Guilherme,Luiz Roberto Guimarães; Moreira,Fatima Maria de Souza; Curi,Nilton.
ABSTRACT Determination of soil properties ​​helps in the correct management of soil fertility. The portable X-ray fluorescence spectrometer (pXRF) has been recently adopted to determine total chemical element contents in soils, allowing soil property inferences. However, these studies are still scarce in Brazil and other countries. The objectives of this work were to predict soil properties using pXRF data, comparing stepwise multiple linear regression (SMLR) and random forest (RF) methods, as well as mapping and validating soil properties. 120 soil samples were collected at three depths and submitted to laboratory analyses. pXRF was used in the samples and total element contents were determined. From pXRF data, SMLR and RF were used to predict soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil analyses; Spatial prediction; Proximal sensor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600648

Quantitative and qualitative damage caused by Oebalus poecilus (Hemiptera, Pentatomidae) to upland rice cultivated in new agricultural frontier of the Amazon rainforest (Brazil)
Provedor de dados: 64
Autores: Krinski,Diones; Foerster,Luís Amilton.
ABSTRACT Oebalus poecilus (Dallas 1851) is one of the stink bug species of great economic importance for rice producers in Brazil of irrigated, flood and upland cropping systems. These pentatomids are known as stink bugs of panicles, because both nymphs and adults feed mainly on panicles. Stink bug attacks result in pecky (spots) seeds, lower mass, germinative reduction and deformed grains. Bearing these factors in mind, the aim of this study was to evaluate the quantitative and qualitative losses in commercial cultivars of upland rice (Cambará variety), submitted to different population levels of stink bugs of panicles, O. poecilus, at different reproductive growth stages. The results show that in upland rice (Cambará variety), the rice grains are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Stink bug of panicles; Damage level; Integrated pest management.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300300

Alkalinized sewage sludge application improves fertility of acid soils
Provedor de dados: 64
Autores: Barbosa,Julierme Zimmer; Poggere,Giovana Clarice; Dalpisol,Maristela; Serrat,Beatriz Monte; Bittencourt,Simone; Motta,Antonio Carlos Vargas.
ABSTRACT Although it is known that alkalinized sewage sludge raises the pH of acid soils, there is limited knowledge regarding its effects on other soil fertility indicators, such as P and K availability and soil organic C content. Thus, the goal of this study was to evaluate how the application of alkalinized sewage sludge affects the fertility of acid soil. Twenty sewage treatment plants were selected throughout Paraná State (Brazil), and samples of alkalinized sewage sludge and samples of the most representative agricultural soil of the region were collected (covering soils with medium, clayey or very clayey texture). Each soil was incubated for 60 days with doses of sewage sludge (0, 10, 20, 40, and 80 Mg ha-1) from its region and equivalent doses of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sanitation waste; Liming; Phosphorus recovery; Nutrient source; Organic matter.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500483

Normalized difference vegetation index obtained by ground-based remote sensing to characterize vine cycle in Rio Grande do Sul, Brazil
Provedor de dados: 64
Autores: Junges,Amanda Heemann; Fontana,Denise Cybis; Anzanello¹,Rafael; Bremm,Carolina.
ABSTRACT The normalized difference vegetation index (NDVI) obtained by remote sensing is widely used to monitor annual crops but few studies have investigated its use in perennial fruit crops. The aim of this study was to determine the temporal NDVI profile during grapevine cycle in vineyards established in horizontal training systems. NDVI data were obtained by the ground-based remote sensing Greenseeker in Chardonnay and Cabernet Sauvignon vineyards located in the Serra Gaúcha region, Rio Grande do Sul, Brazil, from September to June in the 2014/2015 and 2015/2016 vegetative seasons. The grapevine canopies were managed in horizontal training systems (T-trellis and Y-trellis). The results indicated that the temporal NDVI values varied during the grapevine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis vinifera; Greenseeker; Precision viticulture.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500543

Selenium behavior in the soil environment and its implication for human health
Provedor de dados: 64
Autores: Lopes,Guilherme; Ávila,Fabrício William; Guilherme,Luiz Roberto Guimarães.
ABSTRACT Selenium (Se) is an important element that was discovered in 1817, and since the 1960s, it has been regarded as an essential micronutrient for both animals and humans, playing among other functions a relevant role in the antioxidant system of mammals. Inadequate blood Se levels in the human body is a well-known concern in many parts of the world. This malnutrition problem is often due to Se-poor diet, probably as a result of the low Se availability in soils where crops are growing. Nowadays, it is known that not only the total content, but also the inorganic and organic forms of Se contained in foods are important for human nutrition. However, paradoxically some regions of the world present high Se levels in soils causing several functional...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Essential micronutrient; Se adsorption; Se availability; Biofortification; Human nutrition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600605

Drought-induced alterations in the uptake of nitrogen, phosphorus and potassium, and the relation with drought tolerance in sugar cane
Provedor de dados: 64
Autores: Silva,Thais Ramos da; Cazetta,Jairo Osvaldo; Carlin,Samira Domingues; Telles,Bruna Robiati.
ABSTRACT Although there are evidences that the proper supply of mineral nutrients to plants relieves water stress, little is known on the approach of how the drought affects the absorption and accumulation of nutrients by distinct sugar cane genotypes, or in different parts of a same plant. Thus, the objective of this study was to determine the content and accumulation of N, P and K in the aerial part of plant from three genotypes of sugar cane, submitted to three water potentials in the soil, and check the relationship of these variables with the tolerance of plants to prolonged drought. In order to access this objective, an experiment under greenhouse conditions, comprised by a fatorial 3 × 3, in a randomized block design, and four replicates was carried...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum L.; Water limitations; Mineral nutrition; Soil water potentials; Plant growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200117

Land-use effect on hydropedology in a mountainous region of Southeastern Brazil
Provedor de dados: 64
Autores: Pinto,Leandro Campos; Mello,Carlos Rogério de; Norton,Lloyd Darrell; Silva,Sérgio Henrique Godinho; Taveira,Luís Renato Silva; Curi,Nilton.
ABSTRACT In Brazil, the Mantiqueira Range, southeastern region, shelters the last remnants of the ecologically important Upper Montane Tropical Forest. since extensive exploration that has been taking place in this biome for decades, the influence of land-use changes on hydropedology in these areas must be investigated once major land-use changes have been observed. This study aims to evaluate the land-use influence on soil drainable porosity (SDP) in a headwater watershed located in the Mantiqueira Range region, and to validate the proposed methods based on micromorphological and hydrological indicators. The native vegetation of the study area is Atlantic forest that occupies 62% of the area, and the remaining 38% has been used for pasture. Thirty nine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Upper montane tropical forest; Ecological services; Mapping modeling; Geomorphons.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400413

Externally studentized normal midrange distribution
Provedor de dados: 64
Autores: Batista,Ben Dêivide de Oliveira; Ferreira,Daniel Furtado; Chaves,Lucas Monteiro.
ABSTRACT The distribution of externally studentized midrange was created based on the original studentization procedures of Student and was inspired in the distribution of the externally studentized range. The large use of the externally studentized range in multiple comparisons was also a motivation for developing this new distribution. This work aimed to derive analytic equations to distribution of the externally studentized midrange, obtaining the cumulative distribution, probability density and quantile functions and generating random values. This is a new distribution that the authors could not find any report in the literature. A second objective was to build an R package for obtaining numerically the probability density, cumulative distribution and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Distribution function; Density function; Gauss-Legendre quadrature; Newton-Raphson method; R.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400378

Physicochemical composition and antioxidant potential of bee pollen from different botanical sources in Alagoas, Brazil
Provedor de dados: 64
Autores: Vasconcelos,Maria Raphaella dos Santos; Duarte,Alysson Wagner Fernandes; Gomes,Elane Pereira; Silva,Silvio Chagas da; López,Ana Maria Queijeiro.
ABSTRACT Bee pollen results from the mixture of pollen and floral nectar with the salivary substances of bees and has increasingly been used as a food with therapeutic properties. In this study, 30 samples of bee pollen from Apis mellifera apiaries in three mesoregions of Alagoas (Brazil) - Mata Atlântica, South Coast and Caatinga, were collected during the dry season of 2008/09 and analysed. Mata Atlântica and Caatinga had good production of bee pollen. In the same season, Mata Atlântica contained a higher diversity of pollen types for feeding bees with a predominance of herbaceous pollen (63%), whereas the Caatinga samples contained monofloral pollen. Physicochemical data were analysed with the nonparametric Kruskal-Wallis statistical test. The Caatinga...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apis mellifera; Total phenolics; Floral origin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400447

Ocimum basilicum essential oil combined with deltamethrin to improve the management of Spodoptera frugiperda
Provedor de dados: 64
Autores: Silva,Sérgio Macedo; Cunha,João Paulo Arantes Rodrigues da; Carvalho,Stephan Malfitano de; Zandonadi,César Henrique Souza; Martins,Rafael Castro; Chang,Roberto.
ABSTRACT For an important and expensive crop such as corn, the resistance of Spodoptera frugiperda J.E. Smith to various pesticides has led to research throughout the world for a potential insecticide from a natural source. For the management of pest resistance, natural compounds associated with synthetic insecticides can be a promising tool because they can reduce the application of the synthetics molecules while maintaining their effectiveness and promoting the control of the pests. Linalool is a potential insecticide that is easily obtained because it is found in high concentrations in the essential oil of Ocimum basilicum L. Therefore, the present study aimed to evaluate the toxicity of this essential oil and its combination with deltamethrin to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Natural insecticides; Linalool; Fall armyworm; Pyrethroid; Synergism.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600665

Nutritional value of sorghum silage of different purposes
Provedor de dados: 64
Autores: Behling Neto,Arthur; Reis,Rafael Henrique Pereira dos; Cabral,Luciano da Silva; Abreu,Joadil Gonçalves de; Sousa,Daniel de Paula; Sousa,Fabiano Gama de.
ABSTRACT Sorghum is a crop that stands out as an alternative to corn due to lower soil fertility demand and increased tolerance to drought. Lack of information about the qualitative behaviour of sorghum hinders the recommendation of different purpose sorghum cultivars. The goal was to evaluate the chemical composition and in vitro digestibility of different purpose sorghum cultivar silages, at two cropping seasons. The trial was conducted at the Plant Production Department, Federal Institute of Education, Science and Technology of Rondônia, Colorado do Oeste campus, and chemical analyses and in vitro incubation were performed at the Laboratory of Animal Nutrition, Federal University of Mato Grosso, Cuiabá campus. The experimental design was a randomized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbohydrate and protein fractions; Chemical composition; Ensiling; In vitro gas production.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300288

Ammonia and carbon dioxide emissions by stabilized conventional nitrogen fertilizers and controlled release in corn crop
Provedor de dados: 64
Autores: Souza,Taylor Lima de; Guelfi,Douglas Ramos; Silva,André Leite; Andrade,André Baldansi; Chagas,Wantuir Filipe Teixeira; Cancellier,Eduardo Lopes.
ABSTRACT The market of stabilized, slow and controlled release nitrogen (N) fertilizers represents 1% of the world fertilizer consumption. On the other hand, the increase in availability, innovation and application of these technologies could lead to the improvement of N use efficiency in agroecossystems and to the reduction of environmental impacts. The objective of this study was to quantify agronomic efficiency relative index, ammonia volatilization, and CO2 emissions from conventional, stabilized and controlled release N fertilizers in corn summer crop. The experiment was carried out in a corn crop area located in Lavras, state of Minas Gerais, Brazil, without irrigation. All treatments were applied in topdressing at rate of 150 kg ha-1 N. N-NH3 losses...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CO2; NH3 loss; No-tillage; Zea mays L.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500494

Eucalyptus wood and coffee parchment for particleboard production: Physical and mechanical properties
Provedor de dados: 64
Autores: Scatolino,Mário Vanoli; Costa,Andrey de Oliveira; Guimarães Júnior,José Benedito; Protásio,Thiago de Paula; Mendes,Rafael Farinassi; Mendes,Lourival Marin.
ABSTRACT The wood panel industry is constantly growing, being necessary the innovation in technologies and raw materials to improve the quality of the final product. Considering the shortage and pressure to decrease the dependence of wood, there is an interest in other renewable materials such as agricultural wastes. Among these wastes, coffee parchment is one which deserves notoriety. An alternative use for coffee parchment could be for production of particleboard in association with wood particles. This study aimed to evaluate the feasibility of using coffee parchment for production of particleboard. The following percentages of wastes were used: 0, 10, 20, 30, 40 and 50% in association to eucalyptus wood. The panels were produced with 8% of urea...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural waste; Lignocellulosic material; Renewable material.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200139

Object-based change detection using semivariogram indices derived from NDVI images: The environmental disaster in Mariana, Brazil
Provedor de dados: 64
Autores: Silveira,Eduarda Martiniano de Oliveira; Acerbi Júnior,Fausto Weimar; Mello,José Márcio de; Bueno,Inácio Thomaz.
ABSTRACT Object-based change detection is a powerful analysis tool for remote sensing data, but few studies consider the potential of temporal semivariogram indices for mapping land-cover changes using object-based approaches. In this study, we explored and evaluated the performance of semivariogram indices calculated from remote sensing imagery, using the Normalized Differential Vegetation Index (NDVI) to detect changes in spatial features related to land cover caused by a disastrous 2015 dam failure in Brazil’s Mariana district. We calculated the NDVI from Landsat 8 images acquired before and after the disaster, then created objects by multiresolution segmentation analysis based on post-disaster images. Experimental semivariograms were computed within...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Remote sensing; Geostatistics; Feature extraction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500554

Tolerance of Coffea arabica L. seeds to sub zero temperatures
Provedor de dados: 64
Autores: Coelho,Stefania Vilas Boas; Rosa,Sttela Dellyzete Veiga Franco da; Clemente,Aline da Consolação Sampaio; Pereira,Cristiane Carvalho; Figueiredo,Madeleine Alves de; Reis,Leandro Vilela.
ABSTRACT Preservation of the quality of coffee seeds is hindered by their intermediate behavior in storage. However, long-term storage at sub zero temperatures may be achieved by adjusting the water content of the seeds. The aim of this study was to evaluate the tolerance of coffee seeds to freezing, in relation to physiological and enzymatic modifications. Coffee seeds were dried in two manners, rapid and slow, to water contents of interest, 0.67, 0.43, 0.25, 0.18, 0.11, and 0.05 g H2O g-¹ dw (dry basis). After drying, the seeds were stored at a temperature of -20 ºC and of 86 ºC for 24 hours and for 12 months, and then compared to seeds in cold storage at 10 ºC. The seeds were evaluated through calculation of percentage of normal seedlings, percentage of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drying; Silica gel; Saturated saline solutions; Freezing; Antioxidant enzymes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300312

Characterization of trees, fruits and genetic diversity in natural populations of mangaba
Provedor de dados: 64
Autores: Silva,Ana Veruska Cruz da; Amorim,Julie Anne Espíndola; Vitória,Marina Ferreira da; Ledo,Ana da Silva; Rabbani,Allivia Rouse Carregosa.
ABSTRACT The state of Sergipe is the largest mangaba producer, which is a fruit native to Brazil, and has cultural, social and economic importance in its area of occurrence. It is an endangered species due to human actions, and despite its economic potential, there are still no commercial plantations. The study was carried out in order to characterize trees, fruits and the genetic diversity of natural populations of mangaba in Sergipe, Brazil. Fruits from Abaís Beach/Estância (AB) presented, on average, twice the vitamin C content (414.81 mg of vit. C/100g), when compared with the others. The use of ISSR primers was efficient in estimating the genetic similarity of populations. The primers clustered the populations of mangaba according to their origin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hancornia speciosa Gomes; Postharvest; Molecular markers; Variability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300255

Enzimas degradantes de organofosforados: Base molecular e perspectivas para biorremediação enzimática de agroquímicos
Provedor de dados: 64
Autores: Castro,Alexandre Alves de; Prandi,Ingrid Guarnetti; Kuca,Kamil; Ramalho,Teodorico Castro.
RESUMO Muitos compostos organofosforados (OP) são utilizados até hoje na agricultura como pesticidas e, infelizmente, como agentes de guerra química (ou agentes dos nervos) também. Os pesticidas organofosforados e os agentes dos nervos são moléculas extremamente tóxicas, uma vez que atuam como inibidores da enzima Acetilcolinesterase (AChE). O efeito mais preocupante da exposição a estes compostos é a toxicidade colinérgica aguda, ou seja, a perda de coordenação muscular. Uma vez que o indivíduo se contamina, o processo de intoxicação começa através da ligação do OP no sítio ativo da enzima AChE inativando-a. Os tratamentos atuais para pessoas expostas a baixas doses de OP podem ser realizados com atropina, oximas e benzodiazepínicos. Processos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodegradação enzimática; Pesticidas organofosforados; Agentes dos nervos de guerra; Oximas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500471

Genetic and phenotypic diversity of Rhizobium isolates from Southern Ecuador
Provedor de dados: 64
Autores: Torres-Gutiérrez,Roldán; Granda-Mora,Klever Iván; Alvarado-Capó,Yelenys; Rodriguez,Aminael Sánchez; Mogollón,Noroska Gabriela Salazar; Almeida,José Rafael de.
ABSTRACT Rhizobium-legume symbioses play relevant roles in agriculture but have not been well studied in Ecuador. The aim of this study was to characterize the genetic and phenotypic diversity of Rhizobium isolates associated with Phaseolus vulgaris from southern Ecuador. Morpho-cultural characterization, biochemical tests and physiological analyses were conducted to authenticate and determine the diversity of bacteria Rhizobium-like isolates. The genetic diversity of the isolates was determined by molecular techniques, which consisted of bacteria DNA extraction and amplification and sequencing of the 16S rRNA gene. The nodulation parameters and nitrogen fixation for P. vulgaris under greenhouse conditions were also assessed to determine the phenotypic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Diazotrophic bacteria; 16S rRNA gene; Nodulation; Indole acetic acid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600634

ERRATUM
Provedor de dados: 64
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100104

Urochloa decumbens growth and P uptake as affected by long-term phosphate fertilization, mycorrhizal inoculation and historical land use in contrasting Oxisols of the Brazilian Cerrado
Provedor de dados: 64
Autores: Motta,Paulo Emílio Ferreira da; Siqueira,José Oswaldo; Ribeiro,Bruno Teixeira; Silva,Sérgio Henrique Godinho; Poggere,Giovana Clarice; Curi,Nilton.
ABSTRACT In the fertility management of highly weathered-leached Brazilian Oxisols, P is the most limiting macronutrient. A greenhouse experiment was conducted with the objective to evaluate the influence of the interaction between P doses, mycorrhizal inoculation and historical land use on Urochloa decumbens growth and P uptake in four Oxisols with contrasting chemical, physical and mineralogical properties. The plants were cultivated in plastic pots containing 4 kg of soil in a completely randomized design, four replications and 2x2x2 factorial scheme: with two P doses; with and without mycorrhizal inoculation; soils cultivated for long periods and non-cultivated (under native vegetation). There were two plantings of ten weeks each. Shoot dry mater,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Long-term cultivation; Latosols; Available P.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200209

Synthetic acylsugars and their effects on the control of arthropod pests
Provedor de dados: 64
Autores: Gomes,Anni Cristini Silvestri; Cardoso,Maria das Graças; Resende,Juliano Vilela; Thomasi,Sérgio Scherrer; Soares,Luana Isac; Ferreira,Antônio Gilberto.
ABSTRACT One of the main problems facing agriculture is the loss of production as a result of the attack of agricultural pests. Alternative ways to work around this problem are being sought. There are substances called acylsugars that are naturally produced by the wild tomato species S. pennellii and affect arthropod pests. The objectives of this work were to synthesize two acylsugars and assess the biological effect of these on the arthropod pests Bemissia tabaci and Tetranycus urticae. The syntheses were performed via the reactions of glucose and sucrose (saccharose) with acetic anhydride using sodium acetate as the catalyst. The products of these reactions were sucrose octa-acetate and glucose penta-acetate, the structures of which were confirmed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum pennellii; Solanum habrochaites var. hirsutum; Sugar esters; Bemisia tabaci; Tetranychus urticae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200201

Spatial distribution of the litter carbon stock in the Cerrado biome in Minas Gerais state, Brazil
Provedor de dados: 64
Autores: Morais,Vinícus Augusto; Mello,José Marcio de; Mello,Carlos Rogério de; Silva,Carlos Alberto; Scolforo,José Roberto Soares.
ABSTRACT Litter corresponds to the layer of decomposing dead organic matter present on the soil surface. This layer is very important for nutrient cycling and contributes with organic matter accumulation in the soil, besides the carbon stock. The objective herein was to quantify the carbon biomass, both content and stock, and map the litter C-stock in the Cerrado biome, which is formed by Savanna Grassland (SG), Cerrado Stricto Sensu (CE) and Forest Savanna (FS), in Minas Gerais state, southeastern Brazil. The data were collected in 26 fragments in Minas Gerais state, totaling 210 sampling locations. A variographic study was conducted and, for mapping, the ordinary kriging method was used for delimitation of homogeneous zones. It was possible to detect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Kriging; Mapping procedures; Accumulated biomass.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500580

Postharvest conservation of alstroemeria ‘ajax’ using 1-methylcyclopropene
Provedor de dados: 64
Autores: Galati,Vanessa Cury; Muniz,Ana Carolina Corrêa; Guimarães,João Emmanuel Ribeiro; Inestroza-Lizardo,Carlos Orlando; Mattiuz,Claudia Machado Fabrino; Mattiuz,Ben-Hur.
ABSTRACT Cut flowers deteriorate quickly and require postharvest technologies to increase their durability, which is usually around 8 days. Due to the scarce information related to postharvest physiology of Alstroemeria cut flowers, this study aimed to verify the best dose of 1-methylcyclopropene (1-MCP) to the postharvest conservation of inflorescences of Alstroemeria cv. Ajax, considering the factors associated with floral senescence and loss of the decorative life. The stems were submitted to four doses of 1-MCP (0; 100; 250; 500 ppb), then placed in containers with distilled water and stored at room temperature (22 ºC). The treatments were performed in triplicate containing three stems per replicate. The evaluations were performed every three days for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethylene; Longevity; Pigments; Enzyme activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200181

Bioremediation potential of filamentous fungi in methylene blue: Solid and liquid culture media
Provedor de dados: 64
Autores: Menezes,Geovania dos Santos; Carvalho,Tamíris Aparecida de; Almeida,Wandson dos Santos; Sussuchi,Eliana Midori; Viégas,Pedro Roberto Almeida; Marino,Regina Helena.
ABSTRACT The evaluation of the bioremediation potential of microbial with dyes in solid and liquid culture media has been described, but prior studies have not mentioned which culture method is most appropriate for selection of microorganisms. Therefore, the aim of this work was to evaluate the bioremediation potential of filamentous fungi in liquid and solid culture media with methylene blue. The fungi isolates tested were Pleurotus ostreatoroseus (POR-SP1, POR-SP2), P. ostreatus (DF39, EF58 and EF60), Pycnoporus sanguineus (PS) and Fusidium sp. (FUS). The methylene blue concentrations tested were 0, 5, 10, and 50 mg L-1 in the solid medium and 0, 5, 25, 50, and 100 mg L-1 in the liquid medium. In the solid medium, the mycelial diameters of DF39, EF58,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental microbiology; Biodegradation; Dye.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500526

Genetic divergence among interspecific Paspalum hybrids based on seed production traits
Provedor de dados: 64
Autores: Lopes,Rodrigo Ramos; Franke,Lucia Brandão; Souza,Cléber Henrique Lopes de; Bertoncelli,Patrícia; Graminho,Larissa Arnhold.
ABSTRACT The use of genetic divergence as a basis for identifying superior individuals, with greater heterozygosity, is important in view of the difficulty when selecting of dissimilar genotypes exhibiting high average for interest traits. The aim of this study was to evaluate the genetic divergence and the expression of seed production traits in seventeen apomictic Paspalum plicatulum × Paspalum guenoarum hybrids and two male parents (P. guenoarum). A randomized block design was used, with genotypes individually arranged into ten blocks. The following traits were assessed: total number of tillers/plant (TT), reproductive tiller/plant (RT), number of racemes per inflorescence (NRI), reproductive tiller height (RTH), inflorescence rachis length (IRL),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clustering analyses; Seed yield components; P. plicatulum; P. guenoarum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400390

Agronomic characteristics and macronutrient export of grain sorghum hybrids from different sowing dates
Provedor de dados: 64
Autores: Zandonadi,César Henrique Souza; Albuquerque,Carlos Juliano Brant; Freitas,Rogério Soares de; Paula,Alyne Dantas Mendes de; Clemente,Marina Alves.
ABSTRACT Brazilian off-season cropping is increasing the production of cereals, particularly in the Brazilian savannah. Sorghum has been widely used for its grain production capacity and dry matter. Several hybrids are commercially available, each with its own peculiar nutrient absorption capacity. Thus, this study analyzed the agronomic characteristics and nutrient exportation in grain sorghum hybrids sown on different dates. The experiment was conducted at the Paulista Agency Regional Center of Agricultural Technology (APTA) in the city of Votuporanga, São Paulo. The experiment was conducted in a randomized block design with four replications and 4 hybrids. Sorghum hybrids (50A10, 50A50, BUSTER and 1G282) were the different treatments sown on four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum bicolor L.; Production system; Grain; Nutrient content.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100007

Portable X-ray fluorescence (pXRF) applications in tropical Soil Science
Provedor de dados: 64
Autores: Ribeiro,Bruno Teixeira; Silva,Sérgio Henrique Godinho; Silva,Elen Alvarenga; Guilherme,Luiz Roberto Guimarães.
ABSTRACT The X-ray fluorescence (XRF) is an analytical technique for determination of elemental composition of different materials. In soils, the XRF has many pedological, environmental and agronomic applications, mainly after the emergence of portable equipments (pXRF). This technique has been recently adopted and successfully used for soil characterization worldwide, but very rare works have been carried out in soils of developing countries. The soil characterization includes the complete elemental composition determination (nutrients, trace and rare-earth elements) and allows estimating some soil physical and chemical properties. In Brazil, this technique is still incipient, mainly the use of pXRF, however, it can greatly contribute to soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil analyses; Soil morphometrics; Soil characterization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300245

Predicting the metabolizable energy of first and second corn harvests for piglets
Provedor de dados: 64
Autores: Esteves,Lucas Antonio Costa; Oliveira,Newton Tavares Escocard de; Huepa,Laura Marcela Diaz; Ferreira,Silvia Letícia; Castilha,Leandro Dalcin; Pozza,Paulo Cesar.
ABSTRACT Corn is one of the primary ingredients in swine diets, but there is a variation in its chemical composition and metabolizable energy (ME) content. Therefore, faster methods are required that can determine more accurate ME values to improve piglet diets. This study determined and predicted the ME of corn from first and second harvests for piglets. Two experiments were conducted to determine the ME values for 18 corn batches, evaluating corn from first and second harvests. The corn batches were analysed to determine the concentration of dry matter (DM), starch (ST), neutral detergent fiber (NDF), acid detergent fiber (ADF), crude protein (CP), ether extract (EE), ash, calcium (Ca), phosphorus (P) and gross energy (GE). To determine the ME values, 40...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolizability coefficients; Prediction equations; Swine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600683

Genetic divergence among processing tomato hybrids and formation of new segregating populations
Provedor de dados: 64
Autores: Figueiredo,Alex Sandro Torre; Resende,Juliano Tadeu Vilela de; Schwarz,Kélin; Marodin,Josué Clock; Galvão,Alexandre Gonçalves; Resende,Nathalia Campos Vilela.
ABSTRACT Tomato is the most important vegetable species and has a strong bottleneck effect in its domestication and evolution. In exploring the existing genetic variability in commercial germplasm, germplasm has been proven to be an excellent alternative to obtain inbred lines in order to provide superior new hybrids in the future. In this sense, the objective of this study was to estimate the genetic distance among commercial processing tomato hybrids via agronomical and quality postharvest fruit traits with the aim of suggesting promising crosses for the formation of base populations for tomato breeding. Ten hybrids of processing tomato were evaluated in a complete randomized block design with three replicates. In total, eleven agronomic and postharvest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum; Genetic distance; Pre-breeding; Breeding populations; Transgressive segregate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300279

The role of biotechnology in agricultural production and food supply
Provedor de dados: 118
Autores: Cano Estrada,Araceli; Vélez Díaz,Daniel; Morgado Hernández,Carlos Alberto.
Over the past several decades, technological developments and modernization have grown concomitantly.For example, advances in biotechnology have been used as a tool to increase food production. Specifically, advances in genetic engineering have made possible the manipulation of crops to increase yield, guaranteeing food supplies for the increasing world population. However, transgenic crops have not been well received by all members of society, and there is still uncertainty about their social benefits and the possible implications to human health. Additionally, the benefits of agricultural modernization have favored only developed countries, whereas people living in developing and underdeveloped countries suffer rampant hunger, malnutrition and poverty....
Tipo: Journal article
Palavras-chave: Agriculture; Development; Food industry; Nutrition; Organic food; Transgenic food.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100001

Determining the site index of Teak (Tectona grandis L.) plantations in Tabasco, Mexico
Provedor de dados: 118
Autores: Minoche,Djhon; Herrero,Celia; Dominguez-Dominguez,Marivel; Martinez-Zurimendi,Pablo.
Abstract Forest stand productivity is defined as the quantitative estimation of a specific area's potential to produce biomass over a determined period of time. The site index has been the predominant method used to evaluate forest stand productivity. Teak is one of the most accepted species within the international timber market due to the physical and aesthetic qualities of this wood. The aim of this study was to determine the site index of teak plantations. The study was conducted in teak plantations of Tabasco. Data were obtained from a network of 10 plantations consisting of 35 plots measured over four successive inventories (2003 to 2006). The data were fitted to five models, of which four were based on proposed finite difference equations and a...
Tipo: Journal article
Palavras-chave: Finite difference equations; Forest productivity; Inventory; Non-integrated function; Validation.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200154

Storage, size and vigor of &amp;#8216;Esther&amp;#8217; avocado seeds (Persea americana Mill.)
Provedor de dados: 118
Autores: Gálvez-Cendegui,Luisa; Peñaloza,Patricia; Oyanedel,Eduardo; Castro,Mónica.
Avocado seeds present high size variability. Larger seeds, such those of the &amp;#8216;Esther&amp;#8217; variety, are preferred when nurse seeds are used. Even though they are considered recalcitrant seeds, they are stored for propagation. The aim of this study was to evaluate the combined effect of three storage periods and three sizes of &amp;#8216;Esther&amp;#8217; avocado seeds on vigor, in terms of electrolyte leakage, and seedling length and diameter. The experiment was conducted using a completely randomized factorial design. The factors were time in storage (10, 30 and 100 d at 5 °C and 80% relative humidity) and seed size (small, medium and large). Electrolyte leakage was evaluated as a measure of seed vigor, growth and later development of the...
Tipo: Journal article
Palavras-chave: Avocado propagation; Nurse seed; Plant growth; Recalcitrant seed; Seed quality; Vigor test.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100010

Soil erosion by water estimated for 99 Uruguayan basins
Provedor de dados: 118
Autores: Carrasco-Letelier,Leonidas; Beretta-Blanco,Andrés.
Abstract Soil erosion can be accelerated by agricultural intensification, and the soil loss can alter the quality of water bodies. Sustainable agricultural production therefore requires the management of erosion and potential water pollution. In Uruguay, where there is heavy use of soil for agriculture, there is a need to continually develop and update erosion management policies. In this framework, we estimated the erosion in 99 drainage basins by analyzing and managing the information required (K, L, S, C and R-factors) in the universal soil loss equation (USLE) and the revised universal soil loss equation (RUSLE) in a geographical information system (GIS). The studied drainage basins encompass 73% of the area of Uruguay. The results include the...
Tipo: Journal article
Palavras-chave: Erosion; GIS; RUSLE; USLE; Watersheds.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200184

Gas exchange and productivity of yellow passion fruit irrigated with saline water and fertilized with potassium and biofertilizer
Provedor de dados: 118
Autores: Nunes,Járisson C.; Cavalcante,Lourival F.; Pereira,Walter E.; Souza,José T. A.; Almeida,Dácio J. de; Oresca,Denizard; Fernandes,Pedro D.
Abstract The salinity of irrigation water can affect the growth and development of most plants of commercial interest. Aiming to study these aspects in passion fruit culture, an experiment was performed to evaluate the effects of bovine biofertilizer and potassium fertilization on gas exchange and production of the passion fruit &amp;#8216;BRS Giant Yellow&amp;#8217; irrigated with non-saline and saline water. The treatments were arranged in randomized blocks with sub-subdivided plots using the 2×(3×5) scheme, which refers to two levels of electrical conductivity of the irrigation water as the main plot (0.35 and 4.00 dS m&amp;#8722;1) and the combination of three potassic fertilization practices (without fertilization, fertilized with conventional and...
Tipo: Journal article
Palavras-chave: Fermented liquid manure; Passiflora edulis Sims; Photosynthetic efficiency; Salinity.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200168

Combined effect of irrigation and compost application on Montepulciano berry composition in a volcanic environment of Latium region (central Italy)
Provedor de dados: 118
Autores: Cirigliano,Pasquale; Vincenza Chiriacò,Maria; Nunez,Abelardo; Dal Monte,Giovanni; Labagnara,Tilde.
Abstract Montepulciano red grape is cultivated in the northern part of the Latium region, primarily for the production of DOC &amp;#8220;Colli Etruschi Viterbesi&amp;#8221; structured wines for aging. In Mediterranean areas, viticulture is closely influenced by vine water status. In this context, the practice of irrigation may alleviate water-stress-related reductions in plant development to guarantee grape quality, especially in semi-arid areas. The application of on-farm compost in a vineyard may affect grape quality without negative effects, thereby enhancing environmental sustainability. The aim of this work was to investigate the combined effect of irrigation and compost application on the Montepulciano variety in the volcanic environment of Latium...
Tipo: Journal article
Palavras-chave: Climate change adaptation; Compost on farm; Polyphenols concentration; Vitis vinifera L.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200195

Fungi from the Diaporthaceae and Botryosphaeriaceae families associated with grapevine decline in Tunisia
Provedor de dados: 118
Autores: Chebil,S.; Fersi,R.; Bouzid,M.; Quaglino,F.; Chenenaoui,S.; Melki,I.; Durante,G.; Zacchi,E.; Bahri,B. A.; Bianco,P. A.; Rhouma,A.
Abstract Severe decline of mature grapevines has recently been observed in several vineyards in grape regions in northern Tunisia. Between August 2011 and June 2013, wood samples from diseased vines showing dead spur and cordons, shoot dieback associated with sunken necrotic bark lesions and brown to black vascular streaking were collected from numerous diseased vineyards. Several fungal species were isolated from the margin between healthy and symptomatic tissue. Three species of Botryosphaeriaceae, namely, Diplodia seriata, Neofusicoccum australe, and N. vitifusiforme and one species of Diaporthaceae, namely, Diaporthe neotheicola, were observed to be associated with the decline of old vines. Other fungal species were recovered from diseased wood,...
Tipo: Journal article
Palavras-chave: Botryosphaeriaceae; Diaporthaceae; Trunk disease; Virtual RFLP; Vitis vinifera.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200127

USLE/RUSLE K-factors allocated through a linear mixed model for Uruguayan soils
Provedor de dados: 118
Autores: Beretta-Blanco,Andrés; Carrasco-Letelier,Leonidas.
Soil erosion by rainfall is a process that demands management, both for the prevention of excessive soil erosion and for the protection of the quality of freshwater bodies. Erosion coefficients (K-factors) of the universal soil loss equation (USLE)/revised USLE (RUSLE) model were assigned to 99 mapped Uruguayan soil types at 1:1,000,000 scale. This work developed a linear mixed model (LMM) with 79 soils with assigned K-factors, in which the following variables were considered: soil taxonomy, chemical composition, and parent material. The developed LMM had an R²=0.86, in which the soil taxonomy (p&lt;0.0001), parent material (p=0.0174), clay (p=0.0005) and sand (p=0.017) contents had significant statistical effects. The prediction capacity of this model was...
Tipo: Journal article
Palavras-chave: Soil classification; Parent material; Soil texture; Soil chemistry.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100011

Determination of suitable zones for apitourism using multi-criteria evaluation in geographic information systems: a case study in the O'Higgins Region, Chile
Provedor de dados: 118
Autores: Pantoja,Gabriel; Gómez,Miguel; Contreras,Claudio; Grimau,Lissette; Montenegro,Gloria.
Abstract Beekeeping, which involves honey production and pollination of agricultural crops, has become a significant production activity. Linking beekeeping with ecotourism brings greater value to the beekeeping sector, thereby attracting the development of apitourism. Multi-criteria decision analysis is a set of techniques developed through Geographic Information Systems (GIS) focused on spatial decision making, which can be used to link beekeeping and tourism for the development of priority sites for shared activity. This work is based on the definition and weighting of factors used for evaluation of apitourism suitability in Chile, considering the opinion of beekeepers and professionals associated with the sector. The result is a map of apitouristic...
Tipo: Journal article
Palavras-chave: Beekeeping; Geographic information systems (GIS); Land-use suitability analysis; Melliferous plant; Multi-criteria decision analysis (MCDA); Tourism.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200139

Nutritíonal Composition and Polyphenolic Content of Edible Peumus boldus Mol. Fruits
Provedor de dados: 118
Autores: Velásquez,Patricia; Sandoval,María Ignacia; Giordano,Ady; Gómez,Miguel; Montenegro,Gloria.
Peumus boldus is an endemic Chilean tree whose edible fruit lack a history of scientific research. The aim of this study was to determine its nutritional composition (moisture, ash, crude fiber, proteins, carbohydrates and lipids) and polyphenolic content (total phenolic content, HPLC-DAD, HPLC-MS/MS analysis) at different stages of development. The results show that the fruit decreased in ash, crude fiber and total phenolic content throughout its development, while its carbohydrate and protein content increased. An increase in phenolic molecules such as catechin and epicatechin was also observed. This is the first report on the nutritional composition and phenolic content of Peumus boldus Mol. fruits.
Tipo: Journal article
Palavras-chave: Ash; Crude fiber; Kjeldahl; Goldfish; Phenol-sulfuric method; Total phenolic content.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100007

Agronomic characteristics and chemical composition of Gliricidia sepium grown under different residual heights in different seasons
Provedor de dados: 118
Autores: Silva,Shirlenne F; Carneiro,Maria S. de S.; Edvan,Ricardo L; Pereira,Elzânia S; Neto,Luiz B. de Morais; Pinto,Andréa P; Camilo,Danilo de A.
This research was conducted to evaluate the agronomic characteristics and chemical composition of Gliricidia sepium (Jacq.) Steud grown under different residual heights in different seasons. The experimental design used was a complete randomized block in a split-plot. The plots consisted of three residual heights (70, 90 and 110 cm), and the subplots were four seasons (fall, winter, spring and summer) with four replicates. There was no (P&amp;gt;0.05) interaction between season and residual heights for agronomic characteristics. However, these features were influenced by the cutting season, with no significant effect (P&amp;gt;0.05) on residual height. Significant effects (P&lt;0.05) were observed for dry matter, mineral matter, acid detergent fiber and...
Tipo: Journal article
Palavras-chave: Cutting management; Harvest time; Legumes; Nutritional value; Semiarid.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100004

Genetic parameters for milk yield and reproduction traits in the Chilean Dairy Overo Colorado cattle breed
Provedor de dados: 118
Autores: Montaldo,Hugo H; Trejo,Carlos; Lizana,Carlos.
The objective of this study was to estimate genetic parameters for milk production and reproduction traits using phenotypic and pedigree information from the Dairy Overo Colorado breed from southern Chile. Single- and multi-trait mixed models were used to analyze the data. Analyses were performed using ASReml software. The heritability estimates for milk yield, fat yield, protein yield, fat content, protein content, age at first calving and calving interval were 0.29 ± 0.04, 0.34 ± 0.04, 0.30 ± 0.04, 0.56 ± 0.04, 0.56 ± 0.04, 0.01 ± 0.07 and 0.002 ± 0.02, respectively. The genetic correlations between yield traits were high and positive (&amp;#8805; 0.81). The genetic correlations of milk yield with fat content (-0.32) and protein content (-0.34) were...
Tipo: Journal article
Palavras-chave: Breeding; Chile; Correlation; Heritability; Local cattle breed.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100003

Increasing the shelf life of post-harvest table grapes (Vitis vinífera cv. Thompson Seedless) using different packaging material with copper nanoparticles to change the atmosphere
Provedor de dados: 118
Autores: Loyola López,Nelson E; Carrasco Benavides,Marcos R; Duarte Duarte,Pablo H; Arriola Herrera,Mariela A.
An effective way to control post-harvest rotting of table grapes is the use of sulfur dioxide (SO2). However, under certain conditions, the use of SO2 can cause significant loss, mainly associated with bleaching of the berries. Therefore, it is believed that the use of bags with and without copper nanoparticles that modify the atmosphere will allow for the control of Botrytis cinerea as well as the ability to dispense with the use of sulfur dioxide generation. The objective of this test is to evaluate the use of bags with and without copper nanoparticles that modify atmosphere and to evaluate their ability to control post-harvest B. cinerea, as well as their effect on the conservation of physical and chemical characteristics of table grapes. The results...
Tipo: Journal article
Palavras-chave: Modification of atmosphere; Rotting; Sulfur dioxide (SO2).
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100006

Abundance and prevalence of Aphidius avenae (Hymenoptera: Braconidae: Aphidiinae) in Chile
Provedor de dados: 118
Autores: Peñalver-Cruz,Ainara; Ortiz-Martínez,Sebastián; Villegas,Cinthya; Tomanovic,Zeljko; Zepeda-Paulo,Francisca; Zikic,Vladimir; Lavandero,Blas.
Abstract During the samplings described here, Aphidius avenae (=picipes) (Haliday, 1834) was collected. This species has been reported in Chile but has never been studied in terms of its relative abundance and prevalence in central and southern Chile by using classical or molecular methods. The composition of the parasitoid assemblages on several cereal aphid hosts was examined for three seasons in agricultural landscapes. In this note, we describe the prevalence of this parasitoid species in cereal aphids and other aphid hosts and discuss the abundance of this parasitoid compared to other aphid parasitoids and the probable origins of this important aphid parasitoid species in Chile. The results indicate that A. avenae has a low prevalence compared to...
Tipo: Journal article
Palavras-chave: Aphids; Braconidae; Hosts; Parasitoids; Tomato; Wheat.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200207

Protein enrichment of Opuntia ficus-indica using Kluyveromyces marxianus in solid-state fermentation
Provedor de dados: 118
Autores: Herrera,Esperanza; Murillo,Manuel; Berumen,Leslie; Soto-Cruz,Nicolas O.; Páez-Lerma,Jesús B.
Abstract Opuntia ficus-indica is used in animal feed but has a low protein content (above 4%) in comparison to high-quality forage (above 16%). It is necessary to develop technologies that improve the nutrimental value of Opuntia ficus-indica through the process of solid-state fermentation (SSF). Therefore, the objective of this study was to evaluate the changes in the chemical composition of Opuntia ficus-indica during the SSF with the yeast Kluyveromyces marxianus ITD00262. Kluyveromyces marxianus ITD00262 was grown in glucose, peptone, yeast (GPY) broth, at 28 °C and pH 4.8 for 12 h. Opuntia ficusindica was incubated in SSF at 28 °C without inoculation (T1) or inoculated with K. marxianus ITD00262 (T2). Fermented samples of Opuntia ficus-indica were...
Tipo: Journal article
Palavras-chave: Fermentation; Nutritional quality; Protein; Opuntia; Yeast.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200113

Barley Types and Varieties in Spain: Un panorama histórico
Provedor de dados: 118
Autores: Martínez-Moreno,Fernando; Igartua,Ernesto; Solís,Ignacio.
Barley is currently the most cultivated crop in Spain, with an acreage of about three million ha. Its importance stems from its adaptation to areas with poor soil conditions and water stress. The aim of this work is to describe the historical evolution of barley types and varieties of barley grown by farmers in Spain. A historical review was performed by consulting articles and books on the history, archaeology, and agronomy related to the issue. Different web sites and articles about the current varietal state of barley in Spain were also consulted. Another important information source was the CRF (Centro de Recursos Fitogenéticos, Spanish Center of Plant Genetic Resources) of Spain, where a large collection of landraces is preserved. The first barleys...
Tipo: Journal article
Palavras-chave: Barley; Landraces; Plant genetic resources; Varieties; Plant breeding; Cebada; Mejora vegetal; Recursos fitogenéticos; Variedades; Variedades locales.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100002

Comparison of the chemical composition and anti-methanogenic potential of Liquidambar orientalis leaves with Laurus nobilis and Eucalyptus globulus leaves using an in vitro gas production technique
Provedor de dados: 118
Autores: Ulger,Ismail; Kamalak,Adem; Kurt,Ozer; Kaya,Emrah; Guven,Inan.
The aim of the present study was to compare the leaves of Liquidambar orientalis with the leaves of Laurus nobilis and Eucalyptus globulus in terms of their chemical composition and anti-methanogenic potential using an in vitro gas production technique. Species had a significant effect on the chemical composition, gas production, methane production, metabolizable energy and organic matter digestibility of the tree leaves. The crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF) and condensed tannin (CT) contents of the tree leaves ranged from 9.11 to 12.8, 22.49 to 35.85, 32.76 to 49.31, and 1.55 to 9.29%, respectively. The gas production, methane production, metabolizable energy (ME) and organic matter digestibility (OMD) ranged...
Tipo: Journal article
Palavras-chave: Anti-methanogenic potential; Chemical composition; Digestibility; L. orientalis leaves; Metabolizable energy.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100008

Effect of crop load on the phenological, vegetative and reproductive behavior of the ‘Frantoio’ olive tree (Olea europaea L.)
Provedor de dados: 118
Autores: Beyá-Marshall,Víctor; Fichet,Thomas.
The aim of this study was to characterize the phenological, vegetative and reproductive behavior variables of ‘Frantoio’ olive trees in an "off’ year (with a low crop load) and an "on" year (with a high crop load). To do this, during the 2011-2012 and 2012-2013 seasons, "off" and "on", respectively, phenological variables, plant growth (shoots and roots) and reproductive growth (type of flower, fruit set and growth), were monitored biweekly. In addition, the yield per tree was assessed, and the crop load was estimated. The main results showed that crop load strongly influenced these variables. The distribution and intensity of vegetative growth, both in the roots and aboveground, decreased more and had lower intensity in the high fruiting season, with a...
Tipo: Journal article
Palavras-chave: Alternate bearing; Flowering; Rhizotron; Root growth dynamics; Shoots; Source-sink.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100005

Extraction of Soluble Polysaccharides from Grape Skins
Provedor de dados: 118
Autores: Gil Cortiella,Mariona; Peña-Neira,Álvaro.
Obtaining polysaccharides from grape cell walls is an interesting topic for the wine industry given its implications with regards to wine treatments and potential sensory attributes. In the present work, several conditions (i.e., a chelating agent, pH, titratable acidity, extraction time, number of successive extractions, solid to liquid ratio and alcoholic fermentation) were tested to assess their effects on the yield of soluble polysaccharides obtained from grape skins. Among the four tested solvents (i.e., water, tartaric acid, ammonium oxalate, and ethylenediaminetetraacetic acid), aqueous ammonium oxalate was the most effective for polysaccharide extraction but also produced the highest amount of protein impurities. Increasing the number of successive...
Tipo: Journal article
Palavras-chave: Carménère; Extraction; Grape skin polysaccharides; Pectin; Polysaccharides; Wine.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100009

Competition with spreading dayflower (Commelina diffusa L.) can affect the agronomic characteristics and mineral content of common bean grains
Provedor de dados: 118
Autores: Gomes,Lidiane dos Santos; Pin Dalvi,Leandro; Colodete Altoé,Sabrina; Rocha,Leonardo José Frinhani Noia da; Oliveira,Fabio Luiz de.
Abstract The objective of this study was to evaluate the effects of the presence of Commelina diffusa weeds on the agronomic characteristics and mineral content of bean grains (Phaseolus vulgaris L.). The experiments were conducted using a completely randomized design with five replications in a greenhouse. The treatments consisted of two bean cultivars (BRS Ametista and BRS Estilo) grown in the presence and absence of the weeds. The weeds affected the agronomic and mineral characteristics of the varieties; caused a decrease in the number of leaves; reduced the chlorophyll content in the leaves; and reduced the nitrogen, phosphorus and iron contents in the grains. Competition with spreading dayflower did not cause significant effects on the stem diameter...
Tipo: Journal article
Palavras-chave: Food security; Mineral characteristics; Phaseolus vulgaris L; Weeds.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200121

Occurrence of toxigenic Aspergillus flavus in commercial Bulgur wheat
Provedor de dados: 116
Autores: FARIA,Carla Bertechini; SANTOS,Fabiane Cristina dos; CASTRO,Fausto Fernandes de; SUTIL,Ariadne Ricieli; SERGIO,Luciana Marciano; SILVA,Milena Veronezi; MACHINSKI JUNIOR,Miguel; BARBOSA-TESSMANN,Ione Parra.
Abstract Aflatoxins are mutagenic, carcinogenic, and teratogenic mycotoxins. The objective of this work was to study the presence of aflatoxigenic Aspergillus in commercial Bulgur wheat in the city of Maringá, Paraná, Brazil. Thirty samples of commercial Bulgur wheat, acquired in the period of August 2011 to January 2012, were evaluated. The enumeration analysis showed that samples had up to 273.3 CFU of molds and 133.3 CFU of aflatoxigenic Aspergillus per gram of wheat. Forty-two monosporic isolates were obtained and identified as Aspergillus flavus. The isolates were analyzed regarding their aflatoxigenic potential by culture in coconut milk agar; hydroxide vapor exposure; chromatography; and polymerase chain reaction (PCR) targeting genes that code...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspergillus flavus; Aflatoxins; Bulgur wheat; PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100103

Optimization of synbiotic yogurts with yacon pulp (Smallanthus sonchifolius) and assessment of the viability of lactic acid bacteria
Provedor de dados: 116
Autores: PADILHA,Vivianne Montarroyos; ANDRADE,Samara Alvachian Cardoso; VALENCIA,Marcela Sarmento; STAMFORD,Tânia Lúcia Montenegro; SALGADO,Silvana Magalhães.
Abstract The aim of this study was check the effects of sugar, yacon pulp and skimmed milk powder in the aroma, flavour, texture, appearance, overall impression and intent to purchase on synbiotic yogurts to optimize the formulation using Response Surface Methodology. The most accepted formulations were subjected to viability tests during 21 days by counting traditional and probiotic bacteria. Were constructed a complete 23 factorial design, totalling 17 experiments, and considered independent variables (percentage of ingredients) and dependent variables (sensory attributes). All attributes were graded using an acceptability assessment, for this balanced incomplete block was applied. The number of viable cells was determined using specific culture medium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Response surface methodology; Fructo-oligosaccharides; L. paracasei ssp. Paracasei LBC 81; Sensory analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200166

Anti-Escherichia coli effect of Hibiscus sabdariffa L. in a meat model
Provedor de dados: 116
Autores: PAIM,Marcelo Pinto; MACIEL,Mônica Jachetti; WESCHENFELDER,Simone; BERGMANN,Guiomar Pedro; AVANCINI,César Augusto Marchionatti.
Abstract Hibiscus sabdariffa L. is used in traditional medicine because of its bioactive properties, such as antioxidant and antibacterial. Escherichia coli is a Gram-negative bacteria and as an indicator of contamination in food. The aim of this work was to evaluate the anti-Escherichia coli effect and the change in pH on the control of aerobic mesophilic microorganisms, using hydroethanolic extract of H. sabdariffa L. in different concentrations in a meat model, verifying its potential as food additive for microbiological stability on ground beef during cooling storage. For the preparation of the treatments, the meat experimental units were elaborated with different concentrations of the vegetal extract (5, 10, 15 and 20%), ground beef and contaminated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibacterial activity; Ground beef; Vegetable extracts.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400647

In vitro and in vivo antioxidant activities of polyphenol extracted from black garlic
Provedor de dados: 116
Autores: WANG,Weidong; SUN,Yuee.
Abstract This study investigated the in vitro and in vivo antioxidant activities of polyphenol extracted from black garlic. Black garlic polyphenol (BGP) was extracted from black garlic. The in vitro antioxidant activities of BGP were determined using DPPH·, OH and O2– radical scavenging assays. The in vivo antioxidant activities were determined by detecting the malondialdehyde (MDA) content and superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities in mice. Results showed that, the DPPH· radical inhibition rate of 200 and 250 μg/mL BGP was equivalent with Vc (P &gt; 0.05). With concentration of 400 and 500 μg/mL, the OH radical inhibition rate of BGP was slightly lower than Vc (P &gt; 0.05). The O2– radical inhibition rates of 200, 400,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Black garlic; Polyphenol; Antioxidant activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400681

Advantages of recovery from pre-slaughter stress in tambaqui Colossoma macropomum (Cuvier 1816) agroindustry in the Amazon
Provedor de dados: 116
Autores: MENDES,Joana Maia; DAIRIKI,Jony Koji; INOUE,Luis Antonio Kioshi Aoki; JESUS,Rogério Souza de.
Abstract Tambaqui is the main fish species farmed in the Amazon. It is produced on industrial scale, slaughtered in the field, primarily by post-harvest asphyxia. This procedure, however, is stressful because it depletes energy reserves that should be used in postmortem metabolism, which may compromise fish meat freshness and quality. The present study compared the quality of tambaquis slaughtered by asphyxia, the conventional industrial method, and hypothermia. Tambaquis weighing around 1.6 kg were harvested from dugout ponds, transported to experimental tanks and allowed to recover from transport stress for 48h. Biological parameters of fish were evaluated alive post- harvest (Harv), transport (Tr) and recovery (Rc), and postmortem analysis was performed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stress; Management practices; Fish processing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300383

Pereskia aculeata: biological analysis on wistar rats
Provedor de dados: 116
Autores: ZEM,Luciele Milani; HELM,Cristiane Vieira; HENRIQUES,Gilberto Simeone; CABRINI,Daniela de Almeida; ZUFFELLATO-RIBAS,Katia Christina.
Abstract Pereskia aculeata Mill., a species of the family Cactaceous, popularly known in Brazil as ora-pro-nobis, has high protein, vitamin and mineral contents. High essential amino acid concentrations should be underscored, suggesting a better evaluation of the fractions. Current study quantifies amino acid content and the chemical score (CS) of protein amino acids, determining in vivo digestibility, protein efficiency ratio (PER) and net protein ratio (NPR) of P. aculeata. Plant material was collected, washed, placed in an oven at 60 °C, ground and stored in a freezer for chemical analysis. Diets that maintain isoproteic and isocaloric characteristics were prepared for the bioassay, namely: casein (no protein) and Pereskia aculeata leaves-based flour....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ora-pro-nobis; Protein quality; Digestibility; PER; NPR; PDCAAS.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500042

Osmolality and pH in handmade enteral diets used in domiciliary enteral nutritional therapy
Provedor de dados: 116
Autores: HENRIQUES,Gilberto Simeone; MIRANDA,Lígia Amanda Ventura de Oliveira; GENEROSO,Simone de Vasconcelos; GUEDES,Eduarda Guimarães; JANSEN,Ann Kristine.
Abstract Patients who need prolonged domiciliary enteral nutritional therapy may benefit from handmade diets. However, the preparation of such diets might cause insecurity with regard to their nutritional composition and physical-chemical properties. Current study analyzes the osmolality and Hydrogen-Ion concentration (pH) on handmade enteral diets. To this purpose, six formulas and two juices, prescribed on discharge from hospital, were analyzed physically and chemically. Osmolality and pH were respectively determined by cryoscopy and potentiometry. Most formulations were classified as isosmolar (with less than 400 mOsm/kg solvent), and only one was classified as slightly hyperosmolar, with rates ranging from 356.7 to 403.5 mOsm/kg solvent. On average,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enteral nutrition; Osmolar concentration; Hydrogen-ion concentration (pH); Food and nutrition safety.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500109

Utilization of brewer’s spent grain and mushrooms in fortification of smoked sausages
Provedor de dados: 116
Autores: NAGY,Melinda; SEMENIUC,Cristina Anamaria; SOCACI,Sonia Ancuţa; POP,Carmen Rodica; ROTAR,Ancuţa Mihaela; SĂLĂGEAN,Claudiu Dan; TOFANĂ,Maria.
Abstract The aim of this study was to obtain alternative types of smoked sausage by using some vegetable raw materials rich in protein. To this end, smoked sausages with brewer’s spent grain [1.5, 3, and 6% w/w], smoked sausages with mushrooms [10, 17, and 30% w/w], and smoked sausages with mixtures of brewer’s spent grain-mushrooms [3/8% and 1.5/16% w/w] were prepared. Three of these formulations were selected based on panellist’s preference, one for each assortment, and stored under darkness at 4°C and 49% relative humidity for 15 days. Smoked sausage samples were collected at three different storage times (T0, initial state; T1, at day 7 of storage; T2, at day 15 of storage) and evaluated from the physicochemical and microbiological point of view to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Smoked sausages; Brewer’s spent grain; Button mushrooms; Storage time; Stability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200315

Effect of black cumin oil (Nigella sativa L.) on fresh fish (Barbus grypus) fillets during storage at 2 ± 1 °C
Provedor de dados: 116
Autores: OZPOLAT,Emine; DUMAN,Muhsine.
Abstract It is important that the methods and materials used for to lengthen the shelf-life of food are simple, inexpensive and safe. For these reasons, herbal additives like cumin oil (Nigella sativa L.) have been preferred recently. Thus, the present study focuses on the influence of black cumin oil on chemical, microbiological and sensory quality of fish (Barbus grypus) fillets during storage at 2 ± 1 °C. Acceptability scores for sensory quality of all described treatment groups decreased with storage time. Defined limits for mesophilic bacteria and Total volatile basic nitrogen (TVB-N) were reached after 21st days for the control group, after 24th days for with 0.2% black cumin oil treated group and after 28th days for with 0.4% and 0.6% black cumin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Black cumin oil; Barbus grypus; Nigella sativa; Shelf life.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100148

Performance of Pleurotus pulmonarius mushroom grown on maize stalk residues supplemented with various levels of maize flour and wheat bran
Provedor de dados: 116
Autores: MKHIZE,Senzosenkosi Surprise; ZHARARE,Godfrey Elijah; BASSON,Albertus Kotze; MTHEMBU,Mathews Simon; CLOETE,Jacques.
Abstract The use of supplemented agricultural waste in mushroom cultivation can be one of the environmentally friendly strategies for poverty alleviation. The study evaluated the performance of Pleurotus pulmonarius mushroom grown on maize stalk supplemented with varying levels of wheat bran (WB) and maize flour (MF). A completely random design was used for the experiments. It was observed that Pleurotus pulmonarius was significantly affected by varying levels of supplementation, as 20% WB supplementation encountered higher contamination. The lower supplementation levels gave significantly shorter colonisation period with better mycelial growth rate (MGR). The 2% MF, 2% WB and 4% WB gave significantly higher MGR and faster colonisation. The shortest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Production; Biological efficiency; Yield; Supplement levels.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400570

Survival of resistant starch during the processing of atmospheric and vacuum fried instant noodles
Provedor de dados: 116
Autores: VERNAZA,Maria Gabriela; CHANG,Yoon Kil.
Abstract The objective was to develop instant noodles (IN) made by atmospheric and vacuum frying processes, with addition of 10% of three different sources of resistant starch: resistant starch type 2 (RS2), resistant starch type 3 (RS3) and green banana flour (GBF) aiming the increasing of the fibre content. The IN obtained by atmospheric frying lost water faster and absorbed more fat. However, for both frying treatments, the RS3 noodles absorbed the least amount of oil. The greatest loss of RS occurred during the cooking stage. RS2 and GBF noodles presented a loss of RS of around 30% during steam cooking, while the RS3 approximately 18%. The frying process decreased RS content of noodles, however, during both frying process, the samples with the highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resistant starch; Green banana flour; Frying.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300425

Physicochemical characteristics and fibril-forming properties of collagen from paddlefish (Polyodon spathula) and globefish (Fugu flavidus) skin byproducts
Provedor de dados: 116
Autores: WANG,Shanshan; SUN,Xiaoqi; ZHOU,Deqing.
Abstract Acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC) from the skin byproducts of paddlefish (ASC-P and PSC-P) and globefish (ASC-G and PSC-G) were purified and characterized. The imino acid contents of ASC-P, PSC-P, ASC-G and PSC-G were 194.1, 197.9, 186.4 and 189.7 residues/1000 residues, respectively. SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and Fourier transform infrared spectroscopy (FTIR) confirmed that all four samples composed of two different α1- and α2-chains with integrated triple-helical structure. Denaturation temperatures of ASC-P, PSC-P, ASC-G and PSC-G were 29.6, 28.2, 27.4 and 26.9 °C, respectively. Based on Transmission electron microscopy (TEM) observation, all four samples could assemble into fibrils in vitro...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paddlefish; Globefish; Collagen; Physicochemical property; Fibril-forming property; Fibril morphology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200176

Ractopamine hydrochloride and immunological castration in pigs. Part 1: fresh belly characteristics for bacon processing and quality
Provedor de dados: 116
Autores: COSTA E SILVA,Letícia Cristina; BARBOSA,Roger Darros; BOLER,Dustin Dee; SILVEIRA,Expedito Tadeu Facco.
Abstract The effects of ractopamine and immunological castration on belly characteristics, processing yield, physicochemical and sensory quality of bacon were investigated from two crossbred pigs under different conditions of animal production, diet, management and slaughter arranged in factorial design using 2 ractopamine levels (0 and 7.5 ppm) and 3 genders (barrows, immunocastrated and gilts). Before processing, belly firmness, weight, length, width and thickness were measured, and then, bacon processing yield evaluated. After processing, bacon slices were digitally imaged and analyzed for lean meat and fat areas, pH, instrumental color of meat and fat, cooking loss and sensory quality. The ractopamine did not alter belly characteristics, but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacon; Belly characteristics; Digital imaging; Sensory; Immunological castration; Ractopamine hydrochloride.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300397

Chemical characterization, texture and consumer acceptability of yogurts supplemented with quinoa flour
Provedor de dados: 116
Autores: CURTI,Carolina Antonela; VIDAL,Paula Micaela; CURTI,Ramiro Néstor; RAMÓN,Adriana Noemí.
Abstract Quinoa can be used as a functional ingredient in food formulations. The aim of this study was to evaluate the effects on proximate composition, stability during storage, texture and consumer acceptability of yogurts supplemented with quinoa flour at 1, 3 and 5 g 100 mL-1. A product without supplementation was used as control. Products were assessed for moisture, carbohydrates, proteins, fats, total dietary fibre (TDF), ashes and minerals. The pH, acidity and syneresis of yogurts were measured after 1, 7, 14 and 21 days of storage and a Texture Profile Analysis (TPA) was carried out. Applying hedonic scale, 102 consumers analyzed the overall acceptability, color, texture, flavor and aroma of yogurts. Supplemented products showed significant higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Proximate composition; Proteins; Acidification during storage; Sensory attributes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400627

Extraction of β-glucan from Saccharomyces cerevisiae: Comparison of different extraction methods and in vivo assessment of immunomodulatory effect in mice
Provedor de dados: 116
Autores: PENGKUMSRI,Noppawat; SIVAMARUTHI,Bhagavathi Sundaram; SIRILUN,Sasithorn; PEERAJAN,Sartjin; KESIKA,Periyanaina; CHAIYASUT,Khontaros; CHAIYASUT,Chaiyavat.
Abstract Beta-glucan (BG) is a conserved cell wall components of bacteria, fungi, and yeast. BG is an immunomodulator and stimulates the host immune system. This study was performed to screen Saccharomyces cerevisiae strain with high BG, extraction of BG using different chemical extraction methods, composition analysis of BG, and evaluation of the immunomodulatory effect of high-quality BG using mice model. Ten yeast strains were screened for high BG content using total glucan extraction kit and were subjected to FT-IR analysis. The kit based extraction revealed that HII31 showed a high content of total glucan and BG. HII31 cells were subjected to four different acid/base extractions, which indicated that combination of a strong base (NaOH) and weak acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta-glucan; Saccharomyces cerevisiae; Immunomodulation; FTIR; Cytokines.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100124

Characterization of Turkish honeys regarding of physicochemical properties, and their adulteration analysis
Provedor de dados: 116
Autores: KIVRAK,Şeyda; KIVRAK,İbrahim; KARABABA,Erşan.
Abstract This work was conducted to evaluate the quality of 54 honey samples from eighteen different origins from Turkey. Physicochemical properties were examined according to AOAC methods, total phenolic and flavonoid contents by a spectrophotometric method and authenticity of honeys by Combustion Module - Cavity Ring-Down Spectroscopy (CM-CRDS). The microscopic analysis of honey sediment (mellissopalynology) was carried out to identify and count the pollen to provide qualitative indicators to confirm botanical origin. The moisture, electrical conductivity and free acidity of honeys ranged from 15.56 to 18.39%, 0.143 to 2.006 mS.cm-1, 16.05 meq.kg-1 and 34.10 meq.kg-1, respectively. Diastase activity of sideritis honey was found highest. Honeys showed HMF...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Combustion Module-Cavity Ring-Down Spectroscopy; C4 sugar; Unifloral honeys; Diastase; Proline.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100080

Elaboration and acceptability of restructured hams added with jabuticaba skin
Provedor de dados: 116
Autores: ALVES,Ana Paula de Carvalho; MARQUES,Tamara Rezende; CARVALHO,Thaís Cristina Lima de; PINHEIRO,Ana Carla Marques; RAMOS,Eduardo Mendes; CORRÊA,Angelita Duarte.
Abstract Jabuticaba skin flour (JSF), rich in antioxidants and fibre, was used in order to develop four restructured hams in different combinations with meat: 0% control – without the addition of JSF, with the addition of 0.5% JSF, 1.0% JSF and 1.5% JSF, meeting, therefore, the growing demand for meat products with functional appeal. Physicochemical characterizations and sensory analysis were performed, evaluating the impact of information on possible health benefits and the effect on storage. Restructured hams with JSF had higher contents of phenolic compounds; greater weight loss; a darker shade; texture profile with smaller parameters of stiffness, cohesiveness, adhesiveness, flexibility and chewiness (except the restructured ham with 0.5% JSF)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plinia jaboticaba; Meat product; Dietary fibre; Phenolic compound; Antioxidant; Sensory analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200232

HS-SPME optimization and extraction of volatile compounds from soursop (Annona muricata L.) pulp with emphasis on their characteristic impact compounds
Provedor de dados: 116
Autores: SANTANA,Karen Leticia de; GALVÃO,Mercia de Sousa; JESUS,Monica Silva de; NOGUEIRA,Juliete Pedreira; NARAIN,Narendra.
Abstract Aroma and taste are decisive factors in the selection of any food. The aim of this study was to extract the volatile compounds present in soursop (Annona muricata L.) pulp by Solid-phase microextraction (SPME) technique using 3 different fibers (DVB/CAR/ PDMS, CAR/PDMS and PDMS/DVB). An experimental design was set up to evaluate the best extraction conditions wherein the variables were adsorption temperature, ionic strength and pulp concentration. The separation of volatiles was performed in chromatographic columns of different polarity (polar and non-polar) while volatile compounds were identified by analysis in high resolution gas chromatography system coupled with mass spectrometry. The results obtained using 3 different fibers revealed the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annona muricata; Flavor; SPME; Tropical fruits; Volatile compounds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200250

Effect of the roasting temperature and time of cocoa beans on the sensory characteristics and acceptability of chocolate
Provedor de dados: 116
Autores: ROCHA,Ismara Santos; SANTANA,Ligia Regina Radomille de; SOARES,Sérgio Eduardo; BISPO,Eliete da Silva.
Abstract The aim of this work was to study the impact of the roasting temperature (80, 120 and 160 °C) and time (20, 40 and 60 min) of cocoa beans on the sensory acceptability of chocolate using response surface methodology. The results revealed that there was higher impact of roasting temperature and no influence of roasting time (in the studied levels). Lower score of consumers’ sensory acceptability was found at higher roasting temperature of cocoa beans (160 °C). The chocolate samples presented undesirable burnt odor and flavor. Roasting temperatures range 90 to 110 °C were found optimum for higher consumer’s acceptability scores (appearance, aroma, flavor, texture and overall quality attributes). Ten trained assessors consensually defined fifteen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chocolate manufacturing; Sensory acceptance; Quantitative descriptive analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400522

Solvent extraction effects on phytochemical constituents profiles, antioxidant and antimicrobial activities and functional group analysis of Ecballium elaterium seeds and peels fruits
Provedor de dados: 116
Autores: FELHI,Samir; DAOUD,Amal; HAJLAOUI,Hafedh; MNAFGUI,Kais; GHARSALLAH,Néji; KADRI,Adel.
Abstract Ecballium elaterium is a perennial herb with multiple medicinal properties. It was widely used in folk medicine as cathartic, anti-inflammatory and analgesic agents. The present study was devoted to investigate the effect of diethyl ether, acetone, and methanol solvent on the extraction, phytochemicals profiles, antioxidant and antimicrobial activities of Ecballium elaterium seeds and peels fruits. The total phenolic, flavonoid, flavonol, condensed tannins and carotenoids contents were estimated. Maximum phenolic (107 ± 4 mg GAE/g) and flavonoid (18 ± 0 mg QE/g) contents were also found in the methanol peels fruits extract. Results showed that methanol peels fruits extract have the highest antioxidant activity with IC50 values of 1.2 ± 0.1 and 1 ±...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecballium elaterium; Solvent effects; Phytochemical contents; Antioxidant and antimicrobial properties; FT-IR analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300483

Effect of time and storage conditions on the physical and physico-chemical characteristics of the pulp of yellow and purple passion fruit
Provedor de dados: 116
Autores: ARAÚJO,Letícia da Silva; COSTA,Eva Maria Rodrigues; SOARES,Taliane Leila; SANTOS,Idália Souza dos; JESUS,Onildo Nunes de.
Abstract The aim of this study was evaluate the physical and physico-chemical characteristics of extracted fruit pulp of passion fruit with different skin color (yellow, light and dark purple) under refrigeration temperatures and storage times. The extracted pulp of passion fruit was stored at different temperatures: 10 °C, 25 °C; - 30 °C and - 80 °C and at four different storage periods: 0; 10; 20 and 30 days. The following physical and physico-chemical characteristics of the fruit were evaluated: color of fruit peel, fruit weight, diameter, length and width of the fruit, peel thickness, peel mass, pulp mass, pulp color, juice yield, pH, soluble solids, titratable acidity and ratio. The physical and physico-chemical results indicate that all the passion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fruit pulp; Passiflora; Pulp quality; Storage time; Refrigeration.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300500

Estimation of the shelf life of pezik pickles using Weibull hazard analysis
Provedor de dados: 116
Autores: KEKLIK,Nene Meltem; IŞIKLI,Nursel Develi; SUR,Esen Bilge.
Abstract Beta vulgaris L. var. rapa is a variety of beet with edible dark green leaves and stalks, which is a close relative of Swiss chard. It is widely consumed in central Anatolia region in Turkey due to its high nutritional value and desirable sensory attributes. Locally known as ‘pezik’, Beta vulgaris L. var. rapa is a highly perishable vegetable. The stalks of pezik are consumed as pickle, allowing longer consumption of this vegetable. In this study, Weibull hazard analysis was applied to the sensory data to determine the shelf life of pezik pickles. The end of shelf life was indicated by the time when 50% of the panelists found the pickles unacceptable. Pickles blanched for 7 min and stored at 17-18 °C were found to have a shelf life of 167 days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta vulgaris L. var. rapa; Pezik; Pickle; Shelf life; Weibul hazard analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500125

Textured soy protein, collagen and maltodextrin as extenders to improve the physicochemical and sensory properties of beef burger
Provedor de dados: 116
Autores: CARVALHO,Gisandro Reis de; MILANI,Talita Maira Goss; TRINCA,Natália Righetti Rocha; NAGAI,Letícia Yuri; BARRETTO,Andrea Carla da Silva.
Abstract Non-meat ingredients have been added as extenders to variety of meat products, such as beef burger, to improve some properties. Textured soy protein (TSP), collagen (CL) and maltodextrin (MD); and their combinations (TSPCL, TSPMD, CLMD and TSPCLMD) were added to beef burgers and then the effect on physicochemical and sensory properties was evaluated. MD and TSPMD presented higher yield and TSPMD showed lower value for the shrinkage analysis; these results showed the positive influence of the maltodextrin in reducing water loss. CL and TSPCL were harder than the control treatment. CLMD had higher approval in sensorial acceptance than MD and TSPCL. The addition of these extenders in the beef burgers improved the cooking properties, texture and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meat products; Physicochemical properties; Sensory evaluation; Protein-polysaccharide interactions.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500010

Storage stability of standard and diet figs canned in syrup
Provedor de dados: 116
Autores: CAETANO,Priscilla Kárim; FARINAZZI-MACHADO,Flávia Maria Vasques; NASSER,Flávia Aparecida de Carvalho Mariano; FURLANETO,Karina Aparecida; VIEITES,Rogério Lopes.
Abstract The current study aimed to evaluate the physicochemical, microbiological and sensory quality of traditional and diet figs canned in syrup, as well as verify their storage stability. Therefore, it was used green figs from the cultivar Roxo de Valinhos. Two treatments were held: standard sucrose syrup and sweetener blends: sodium cyclamate, sucralose and sodium saccharin. The syrups were previously prepared; being 25 °Brix for sucrose syrup; and by dividing the quantity of sucrose potency (100) to the blend of sweeteners potency (125) for sweetener blends. The products were stored at room temperature for 180 days and evaluated once a month through pH, soluble solids, titratable acidity, texture, vacuum and sensory evaluation (i.e. affective test);...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ficus carica L; Sweeteners; Compote; Sensory analysis; Shelf life.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500154

Management of freezing rate and trehalose concentration to improve frozen dough properties and bread quality
Provedor de dados: 116
Autores: GERARDO-RODRÍGUEZ,Jesús E.; RAMÍREZ-WONG,Benjamín; LEDESMA-OSUNA,Ana I.; MEDINA-RODRÍGUEZ,Concepción L.; ORTEGA-RAMÍREZ,Refugio; SILVAS-GARCÍA,María I.
Abstract Bread is one of the most consumed foods in the world, and alternatives have been sought to extend its shell life, and freezing is one of the most popular methods. The purpose of this study was to evaluate the effect of freezing rate and trehalose concentration on the fermentative and viscoelastic properties of dough and bread quality. Dough was prepared and trehalose was added at three concentrations (0, 400, 800 ppm); dough was pre fermented and frozen at two freezing rates then stored for 42 days. Frozen dough samples were thawed every two weeks. CO2 production and elastic and viscous modulus were determined. In addition, bread was elaborated and specific volume and firmness were evaluated. High trehalose concentrations (400 and 800 ppm)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frozen dough; Trehalose; Gluten viscoelasticity; Bread quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100059

Purification and characterization of polyphenol oxidase from purslane
Provedor de dados: 116
Autores: GUL GUVEN,Reyhan; GUVEN,Kemal; MATPAN BEKLER,Fatma; ACER,Omer; ALKAN,Hüseyin; DOGRU,Mehmet.
Abstract The polyphenol oxidase (PPO) is an enzyme that is responsible for the enzymatic browning of fruits and vegetables. This is generally undesired process and need to be prevented in food technology. PPO from purslane was purified, characterised and the kinetic parameters for three substrates namely, catechol, L-Dopa and 4-methylcatechol were determined. The optimum pH and temperature values were found to be pH 7.0 and 50 °C, respectively using the catechol as substrate. The apparent molecular weight of the PPO from purslane was determined as high as 163 kDa by partially denaturing SDS-PAGE. Moreover, the inhibition kinetics of the purified PPO were determined, using both synthetic and natural inhibitors. Among inhibitors tested, ascorbic acid was the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Portulaca oleracea; Polyphenol oxidase; Purification; Kinetics; Inhibitors.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300356

Comparison of the physicochemical profiles of buriti from the Brazilian Cerrado and the Amazon region
Provedor de dados: 116
Autores: CÂNDIDO,Thalita Lin Netto; SILVA,Mara Reis.
Abstract Demand for native fruits has been expanding, due to the increasing interest in foods with possible health benefits. The buriti (Mauritia flexuosa L. f.) is a native Brazilian fruit, appreciated by local populations, and its products are already on the market. This study investigated the physical characteristics and nutritional composition of buriti pulp, obtained from typical Cerrado and Amazon regions in Brazil. These regions influenced physical parameters and chemical composition. The fruits originating in the Cerrado were bigger and heavier than the ones from the Amazon. Nevertheless, protein, fatty acid and carbohydrate contents were higher in fruits from the Amazon region. The analyzed buriti fruits presented high monounsaturated fatty acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mauritia flexuosa L. f.; Nutritional value; Fatty acids; Minerals.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500078

Nutritional value of huitlacoche, maize mushroom caused by Ustilago maydis
Provedor de dados: 116
Autores: AYDOĞDU,Mehmet; GÖLÜKÇÜ,Muharrem.
Abstract Smutty maize cobs, caused by Ustilago maydis ((DC) Corda.), a fungus belonging to Basidiomycetes, can be seen wherever maize is grown. It is considered as a fungal disease limiting maize yield worldwide. However, in Mesoamerica, it is called as “huitlacoche” and evaluated as an edible mushroom. The present study was conducted to examine nutritional characteristics of this mushroom. In the study, smutty cobs naturally infected by U. maydis were randomly gleaned from plants in maize producing areas in the Mediterranean region of Turkey, in 2015. Huitlacoche was analyzed in terms of proximate composition, fatty acids, mineral elements, total phenolic and flavonoid matters and antioxidant activity. Average protein content was 12%, while fatty acids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Edible mushroom; Food properties; Maize smut fungus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400531

Bioactive compounds and antioxidant activity analysis during orange vinegar production
Provedor de dados: 116
Autores: DAVIES,Cristina Verónica; GERARD,Liliana Mabel; FERREYRA,María Mercedes; SCHVAB,María del Carmen; SOLDA,Carina Alejandra.
Abstract Citrus fruits are significant sources of bioactive compounds, such as ascorbic acid, polyphenols and carotenoids, due to their antioxidant properties important for human nutrition. In addition, since oranges possess high sugar content (8-15%), making vinegars from alcoholic orange substrates, with functional characteristics is a possible development of novel products. The aim of this research work was to analyze changes in ascorbic acid, total phenolics, total carotenoids and antioxidant activity during orange vinegar processing. In order to analyze the influence of acetification and aging in these characteristics, samples were taken in three stages: orange alcoholic substrate for acetification (SNA), young orange vinegar or recently obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orange vinegar; Antioxidant activity; Bioactive compounds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300449

Protein concentrates from defatted rice bran: preparation and characterization
Provedor de dados: 116
Autores: PIOTROWICZ,Inajara Beatriz Brose; SALAS-MELLADO,Myriam Mercedes.
Abstract The goal of this work is to determine the optimal conditions for the obtaining of protein concentrates from rice bran. The effects of defatting processes applied to this product in laboratory and in industrial scales were investigated. Through two experimental designs were performed, and production conditions to obtain the protein concentrates were chosen with values of protein contents average 59.9% and 57.1%, with protein yields of 61.6% and 30.7%. The concentrates produced with industrially defatted rice bran showed higher digestibility and increased thermal stability compared with the product obtained with laboratory defatted rice bran. Both concentrates show molecular weight proteins below 50 kDa. The morphology of the precipitated proteins,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Defatted rice bran; Extraction conditions; Protein concentrates.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500165

Physical and chemical characteristics of cheese bread, using fermented broken rice
Provedor de dados: 116
Autores: CORADO,Andressa; BAIOCHI,Marise; SILVA,Edson Pablo da; CALIARI,Marcio; DAMIANI,Clarissa.
Abstract Development of new food products, taking as raw material the subproducts obtained during industrial process become an economic and nutritious alternative, since these are usually discarded, caning be a significant nutritional source good. This research aimed to develop cheese bread using fermented broken rice instead of sour starch in four different concentrations (0%, 25%, 50%, 75% and 100%). After the development of formulations, was performed physics and chemicals characterization of products obtained, performing analysis of: proximate composition, dietary fiber, acidity, pH, ºBrix, total soluble sugars, reducing and sucrose. The increased formulations didn’t present significant differences, highlighting the average values of protein 7%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Subproducts; Fermentation; Physical characteristics; Rice.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500142

Formulation of a peach ice cream as potential symbiotic food
Provedor de dados: 116
Autores: VILLALVA,Fernando Josué; CRAVERO BRUNERI,Andrea Paula; VINDEROLA,Gabriel; GONÇALVEZ DE OLIVEIRA,Enzo; PAZ,Noelia Fernanda; RAMÓN,Adriana Noemí.
Abstract Today’s population increasingly demands and consumes healthy products. For this reason, the food industry has been developing and marketing food with added bioactive components. The aim of this work was to formulate a peach ice cream reduced in calories with an added probiotic (Bifidobacterium lactis Bb-12) and prebiotics (inulin), and to evaluate its sensory quality and acceptability as potential symbiotic food. The moisture content was 76.47%; 7.14% protein; 0.15% fat; 6.37%; carbohydrates; 9.87% inulin; 1.22% ash; 0.201% calcium, 0.155% phosphorus and 0.168% sodium. On the first and 21th day of storage counts of B. lactis Bb – 12 was 4 x 108 CFU/mL and 1.5 x 107 CFU/mL, respectively. It was possible to formulate a peach ice cream reduced in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ice cream; Inulin; Probiotic; Prebiotic; Symbiotic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300456

Occurence and antimicrobial resistance of Arcobacter species in food and slaughterhouse samples
Provedor de dados: 116
Autores: ELMALI,Mehmet; CAN,Hayriye Yeşim.
Abstract The objectives of this study were i) to isolate Arcobacter species (Arcobacter butzleri, Arcobacter skirrowii, Arcobacter cryaerophilus) from different foods and sources, ii) to verify the isolates by multiplex PCR assay, iii) to detect the antibiotic resistance profiles of the isolates. In this study a total of 60 Arcobacter isolates were obtained. Arcobacter species were mostly isolated from swab samples (40%), followed by wastewater (29.1%), broiler wing meat (30%), raw milk (23.9%) and minced meat (6.6%). Regarding the seasonal distribution of Arcobacter from swab and wastewater samples, the bacterium was commonly isolated from wastewater in winter and spring, while it was frequently detected in swab samples during autumn and spring. All of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arcobacter; Antimicrobial resistance; Raw milk; Minced meat; Wastewater.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200280

Elaboration and characterization of Japanese Raisin Tree (Hovenia dulcis Thumb.) pseudofruits fermented alcoholic beverage
Provedor de dados: 116
Autores: PINTO,Juliana Tensol; ALVARENGA,Luana Farah; OLIVEIRA,Diego Pinto de; OLIVEIRA,Tânia Toledo de; SCHWAN,Rosane Freitas; DIAS,Disney Ribeiro; QUEIROZ,José Humberto de.
Abstract Hovenia dulcis pseudofruits have underexplored properties for food purposes, despite their pleasant sensory characteristics and therapeutic benefits. The aim of this study was the elaboration and chemical characterization of the alcoholic fermented beverage of H. dulcis, using selected strain of Saccharomyces cerevisiae (CCMA 0200). The resulting fermented beverage presented high content of phenolic compounds and antioxidant activity when compared to other fruits and beverages (DPPH and ABTS assay). The alcohol content was 12.9 oGL and total sugars 3.57g/L. By the GC-MS analysis, 39 compounds were identified including metabolites with therapeutic potential such as eugenol, trans-farnesol salicylates. The flavonoid dihidromyricetin was identified...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hovenia dulcis; Fermented beverage; Volatile compounds; Antioxidant; Dyhidromyricetin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500101

Recent developments in gluten-free bread baking approaches: a review
Provedor de dados: 116
Autores: WANG,Kun; LU,Fei; LI,Zhe; ZHAO,Lichun; HAN,Chunyang.
Abstract Celiac disease (CD) is one of the most common human intestinal malabsorption diseases. The only effective treatment for patients with CD is to follow a gluten-free (GF) diet strictly. Nowadays, the increasing incidence of CD promotes worldwide interests for various desirable GF products. However, baking without gluten, the key ingredient for bread structure and quality, is a big challenge for all bakers and cereal researchers. Several approaches have been applied to understand and improve gluten-free bread (GFB) elaboration and further studies are still required. The main focus of this review is to discuss the approaches for GFB improvements in recent 5 years, including the use of novel alternative flours, functional ingredients, processing aids,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Celiac disease; Gluten-free bread; Process; Quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500001

Sonication enhances quality and antioxidant activity of blueberry juice
Provedor de dados: 116
Autores: ZOU,Yu; HOU,Xiyan.
Abstract Effect of sonication on the blueberry juice was studied by evaluating the pH, viscosity, electric conductivity, color, total sugars, soluble solids, polyphenol, anthocyanidin, and radical scavenging activities. There were not any remarkable (p &gt; 0.05) change in pH and electric conductivity. However, viscosity and color of blueberry juice markedly (p &lt; 0.05) enhanced with the extension of sonication time. Meanwhile, total sugars, soluble solids, polyphenol, and anthocyanidin were obviously enhanced (p &lt; 0.05). Moreover, prominent increase (p &lt; 0.05) was observed on DPPH, superoxide, and hydroxyl radicals scavenging activities of sonicated blueberry juice. The current results exhibited sonication effectively improved blueberry juice...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sonication; Quality; Radical scavenging activity; Blueberry juice.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400599

Production and characterization of nanocapsules encapsulated linalool by ionic gelation method using chitosan as wall material
Provedor de dados: 116
Autores: XIAO,Zuobing; XU,Ziqi; ZHU,Guangyong.
Abstract Linalool has been extensively applied in various fields, such as flavoring agent, perfumes, cosmetics and medical science. However, linalool is unstable, volatile and readily oxidizable. A sensitive substance can be encapsulated in a capsule, so encapsulation technology can solve these problems. In this paper, linalool-loaded nanocapsules (Lin-nanocapsules) were prepared via the ionic gelation method and Lin-nanocapsules were characterized. The results of Fourier transformation infrared spectroscopy (FTIR) showed that linalool was successfully encapsulated in the wall materials. Scanning electron microscopy (SEM) results demonstrated that the shapes of Lin-nanocapsules, with smooth surfaces, were nearly spherical. Lin-nanocapsule average particle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lin-nanocapsules; Flavor; Encapsulation; Rheology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400613

The effect of the replacement of fat with carbohydrate-based fat replacers on the dough properties and quality of the baked pogaca: a traditional high-fat bakery product
Provedor de dados: 116
Autores: SERIN,Seher; SAYAR,Sedat.
Abstract Pogaca is a traditional high-fat bakery product in Turkey. This study was conducted to evaluate the effect of fat replacement in pogaca formulation by various amounts (5, 10 and 15 g on 100 g wheat flour basis) of inulin, polydextrose and maltodextrin on the properties of dough and quality of pogaca. Dough stickiness values were increased by increasing the amount of fat replacer at the all fat reduction levels (20, 30 and 40%) studied. Extensibility and resistance to extension values of dough were also significantly changed due to the fat replacement. Sensory analysis of pogaca showed that the formulations prepared by maltodextrin and polydextrose generally received higher scores than the formulation prepared by inulin. Overall, it was observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dough stickiness; Fat replacer; Pogaca; Sensory analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100025

Obtainment, quantification and use of lactulose as a functional food – a review
Provedor de dados: 116
Autores: ZIMMER,Fernanda Caspers; GOHARA,Aline Kirie; SOUZA,Aloisio Henrique Pereira de; MATSUSHITA,Makoto; SOUZA,Nilson Evelázio de; RODRIGUES,Angela Claudia.
Abstract Whey (milk serum) is produced by the dairy industry during the manufacture of cheese. In addition to being a valuable source of functional and nutritional proteins, whey also presents almost all the lactose from the original whole milk. However, many industries still consider the whey as an effluent, which can cause serious environmental problems when not properly treated. Therefore, it is important to develop alternatives for the adequate use of whey. The lactose obtained from whey permeate can be converted into lactulose, a prebiotic which may be metabolized in the intestine by probiotic bacteria, such as Lactobacillus sp. and Bifidobacterium sp., through enzymatic isomerization or by using alkaline catalysts, with minimal secondary reactions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactose isomerization; Lactulose; Prebiotics; Reuse of industrial byproducts; Whey permeate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400515

A study of fortification of lemonade with herbal extracts
Provedor de dados: 116
Autores: TAMER,Canan Ece; YEKELER,Fatma Zehra; ÇOPUR,Ömer Utku; İNCEDAYI,Bige; SUNA,Senem.
Abstract The aim of the present work was to design new beverages using lemonade and some herbal extracts (linden, heather, green tea, lemon verbena, clove, peppermint, ginger and mate) rich in vitamin C and flavonoids. The linden-added lemonade showed the highest value (597.9 mg/kg) for ascorbic acid content, whereas the lemon verbena-added lemonade showed the lowest value (486.04 mg/kg). The amount of saccharose was changed by 11.07-11.58%, the glucose by 1.11-1.62% and the fructose between 11.07-11.58% in the beverages. K, Na, Mg and P values in the lemonades were determined in the range of 178.83-210.98 mg/kg, 33.75-39.13 mg/kg, 22.37-27.89 mg/kg and 7.22-10.04 mg/kg, respectively. The total phenolic content in the samples changed between 315.11-397.57...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lemonade; Beverage; Herbal extract; Antioxidant activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100045

Protease prospecion and determination of its isoenzymes activity in cocoa cultivars (Theobroma cacao L.)
Provedor de dados: 116
Autores: SILVEIRA,Paulo Túlio de Souza; MELO,Lorena de Jesus Próculo; SOUZA,Luciane Santos; BISPO,Eliete da Silva; SOARES,Sérgio Eduardo.
Abstract Our objective was to characterize the protease enzymatic activity and its isoenzymes on cacao cultivars PH 16 and TSH 1188, produced in southern Bahia, linking it to the conditions of the fermentation process. Proteases were extracted and semi-purified, their activities determined changing substrate, pH and temperature, and the values ​​compared with the parameters of fermentation (pH and temperature), and yet determined the kinetic parameters and the activity of its isoenzymes: aminopeptidase, carboxypeptidase and endoprotease. In the experimental conditions, differences in protease activities were shown as to different cocoa cultivars on various conditions. The albumin stands out as the preferred enzyme substrate, in a pH range between 3 and 6...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminopeptidase; Carboxypeptidase; Endoprotease; Peptide bonds; Amino acids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300369

Effect of temperature and nitrogen concentration on biomass composition of Heterochlorella luteoviridis
Provedor de dados: 116
Autores: MENEGOL,Tania; DIPRAT,Andressa Bacalau; RODRIGUES,Eliseu; RECH,Rosane.
Abstract The interest in microalga as a food supplement has grown due their high contents of carotenoids, polyunsaturated fatty acids and proteins. This study evaluated the effect of different temperatures (22, 27 or 32 °C) and sodium nitrate concentrations (12, 24, 36, 48 or 60 mg L-1 of N-NO3) in culture medium on Heterochlorella luteoviridis biomass production and composition. The highest biomass concentration (3.35 g L-1) was observed at the highest N-NO3 concentration. The N-NO3 concentration positively affected protein, carbohydrate and carotenoids contents of biomass. On the other hand, cells cultured at the lowest N-NO3 concentration showed a slight increment in lipid content. The major carotenoid was lutein (30.7 ± 1.4% of total carotenoids), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen; Temperature; Lipids; Omega-3; Carotenoids; Microalga.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000700028

Availability and consumption of fish as convenience food – correlation between market value and nutritional parameters
Provedor de dados: 116
Autores: DURAN,Nádia Marion; MACIEL,Erika da Silva; GALVÃO,Juliana Antunes; SAVAY-DA-SILVA,Luciana Kimie; SONATI,Jaqueline Girnos; OETTERER,Marília.
Abstract Fish consumption is low in Brazil and several factors justify this fact, among them the lack of practicality in preparation. Thus, this study aimed to investigate the relation between the price and the nutritional characteristics of the processed fish products. Correlations between price and nutritional value of 18 different processed fish products were established, comparing nutritional parameters between in natura and processed fish. The results showed that protein features moderate positive correlation to price. The processed fish products analyzed showed lower protein content and higher contents of energy, lipids and sodium compared to in natura fish.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Convenience food; Fish consumption; Price; Nutritional value.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100065

Validation of spectrophotometric microplate methods for polyphenol oxidase and peroxidase activities analysis in fruits and vegetables
Provedor de dados: 116
Autores: SIGUEMOTO,Érica Sayuri; GUT,Jorge Andrey Wilhelms.
Abstract Enzymes polyphenol oxidase (PPO) and peroxidase (POD) play important roles in the processing of fruits and vegetables, since they can produce undesirable changes in color, texture and flavor. Classical methods of activity assessment are based on cuvette spectrophotometric readings. This work aims to propose, to validate and to test microplate spectrophotometric methods. Samples of apple juice and lyophilized enzymes from mushroom and horseradish were analyzed by the cuvette and microplate methods and it was possible to validate the microplate assays with satisfactory results regarding linearity, repeatability, accuracy along with quantitation and detection limits. The proposed microplate methods proved to be reliable and reproducible as the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microplate; Polyphenol oxidase; Peroxidase; Enzymatic assay; Apple juice.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500148

Theory of planned behavior applied to fish consumption in modern Metropolitan Lima
Provedor de dados: 116
Autores: HIGUCHI,Angie; DÁVALOS,Jorge; HERNANI-MERINO,Martín.
Abstract Despite being an important source of protein, fish consumption in Peru is low compared with other coastal countries. Thus, the objective of this study is to identify the core determinants of such consumption. We based our analysis on the framework provided by the Theory of Planned Behavior (TPB) where attitudes, subjective norms, past experience and health involvement determine the intention and frequency of fish consumption. Primary data were gathered through 159 consumers of fish in modern Metropolitan Lima between August and October 2015. From a set of likert scale indicators a structural model was specified to evaluate the relationships given by the theoretical framework of the TPB. The results showed that the intention to eat fish is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Theory of Planned Behavior (TPB); Fish consumption; Lima; Peru.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200202

Syneresis and chemical characteristics of fermented rice extract with probiotic bacteria and waxy maize starch
Provedor de dados: 116
Autores: COSTA,Kassia Kiss Firmino Dourado; PERTUZATTI,Paula Becker; OLIVEIRA,Tatianne Ferreira de; CALIARI,Márcio; SOARES JÚNIOR,Manoel Soares.
Abstract The objective of this work was to elaborate fermented extracts using rice bran and broken rice grains (proportion 8:92) with probiotic bacteria and different concentrations of waxy maize starch (WMS) in order to obtain products with low level of syneresis and desirable physical-chemical characteristics, and to evaluate the content of phenolic compounds, antioxidant capacity and chemical composition of the extract selected and flavored with strawberry aroma and strawberry syrup. A randomized design was used with five treatments (0, 4, 8, 12 and 16 g 100 g–1 of WMS) and four replications. The fermented rice extract had increased soluble solids (from 12.97 to 14.23 °Brix) and total acidity (from 0.29 to 0.30 g 100 g–1), whereas total soluble sugars...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa (L.); Phenolic compounds; Antioxidant capacity; By-products; Scanning electron microscopy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400640

Volatile compounds in meat and meat products
Provedor de dados: 116
Autores: KOSOWSKA,Monika; A. MAJCHER,Małgorzata; FORTUNA,Teresa.
Abstract Meaty flavor is composed of a few hundreds of volatile compounds, only minor part of which are responsible for the characteristic odor. It is developed as a result of multi-directional reactions proceeding between non-volatile precursors contained in raw meat under the influence of temperature. The volatile compounds are generated upon: Maillard reactions, lipid oxidation, interactions between Maillard reaction products and lipid oxidation products as well as upon thiamine degradation. The developed flavor is determined by many factors associated with: raw material (breed, sex, diet and age of animal, conditions and process of slaughter, duration and conditions of meat storage, type of muscle), additives applied and the course of the technological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Volatile compounds; Meat flavor; Precursors; Meat products.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100001

A comparative study on antioxidant activity of different parts of lotus (Nelumbo nuficera Gaertn) rhizome
Provedor de dados: 116
Autores: YANG,Dongmei; ZHANG,Qian; REN,Guoping; YING,Tiejin.
Abstract In this study, the antioxidant activities of different parts of lotus (Nelumbo nuficera Gaertn) rhizome were compared. The total phenolic content of lotus rhizome was determined, and Ferric reducing antioxidant power (FRAP) assay, 1,1-diphenyl-2-picrylhydrazyl hydrate (DPPH) radical-scavenging assay and β-carotene-linoleic acid assay were performed to assess the antioxidant activity of lotus rhizome. Results showed that there was a significant difference in total phenolic content and antioxidant activity between any two of four parts of lotus rhizome. The order of total phenolic content and antioxidant activity in different parts of lotus rhizome was as follows: peel of old lotus rhizome &gt; peel of young lotus rhizome &gt; flesh of old lotus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lotus rhizome; Antioxidant activity; FRAP; DPPH; Β-carotene bleaching assay.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100135

Increased antioxidant activity and polyphenol metabolites in methyl jasmonate treated mung bean (Vigna radiata) sprouts
Provedor de dados: 116
Autores: LI,Li; DONG,Yinmao; REN,Hankun; XUE,Yan; MENG,Hong; LI,Minhui.
Abstract Mung bean sprouts are a popular health food both in China and worldwide. We determined the optimal concentration of exogenous methyl jasmonate (MeJA) for the promotion of the sprouting in mung beans (Vigna radiata). The 1,1-diphenyl-2- picrylhydrazyl radical (DPPH) scavenging test showed that MeJA application resulted in significantly improved antioxidant capacity in the sprouts 72 h later. Measurement of total polyphenols in MeJA-treated beans from 0 to 168 h, using Folin–Ciocalteu colorimetry, showed that the polyphenols changing was significantly correlated with antioxidant activity. The main polyphenols isovitexin, kaempferol-3-O-rutinoside, daidzein, genistein, isoquercitrin, p-coumaric acid, and caffeic acid were quantified using...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mung beans sprouts; Methyl jasmonate; Antioxidants; Polyphenols; Metabolite pathway.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300411

Water sorption and water permeability properties of edible film made from potato peel waste
Provedor de dados: 116
Autores: OTHMAN,Siti Hajar; EDWAL,Siti Amirah Mohammad; RISYON,Nazratul Putri; BASHA,Roseliza Kadir; A. TALIB,Rosnita.
Abstract The water sorption and permeability properties of edible film produced from potato peel waste was investigated under different levels of relative humidity (23, 33, 43, 57, 75% RH) and temperatures (5, 30, 50 °C). The water sorption behaviour and isotherms of the film were investigated by fitting water sorption data to the Peleg model and the Guggenheim, Anderson de Boer model (GAB model). The amount of moisture content, time required for the moisture content of the film to reach equilibrium, water sorption rate, and water sorption capacity increased when the relative humidity increased. The effect of temperature on moisture content, water sorption rate, water sorption capacity, and monolayer moisture content is complex and related to the water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Edible film; Food packaging; Water permeability; Water sorption.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500063

Screening of traditional South African leafy vegetables for specific anti-nutritional factors before and after processing
Provedor de dados: 116
Autores: ESSACK,Humaira; ODHAV,Bharti; MELLEM,John Jason.
Abstract This study investigated the effect of processing on anti-nutritional factors of thirteen traditional leafy vegetables collected in Kwa Zulu-Natal, South Africa. The aim was to determine whether processing reduced anti-nutrient levels of leafy vegetables. The vegetables were boiled in a plant-to-distilled water ratio of 1:4 (w/v) at 97 °C for a time period of 5 and 15 min. The vegetables studied were: Amaranthus dubius, Amaranthus hybridus, Asystasia gangetica, Bidens pilosa, Ceratotheca triloba, Chenopodium album, Emex australis, Galinsoga parviflora, Guilleminea densa, Momordica balsamina, Oxygonum sinuatum, Physalis viscosa and Solanum nigrum. From this study, it was determined that non processed samples contained anti-nutrients such as tannins,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Traditional leafy vegetables; Tannins; Phytic acid; Alkaloid; Oxalic acid; Cyanogenic glycoside.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300462

Characterization of chemical and mineral composition of marolo (Annona crassiflora Mart) during physiological development
Provedor de dados: 116
Autores: SILVA,Edson Pablo da; ABREU,Wilson Cesar de; GONÇALVES,Otávio Alteff; DAMIANI,Clarissa; VILAS BOAS,Eduardo Valério de Barros.
Abstract Maroleiro (Annona crassiflora Mart), belonging to the family of Annonaceae is a typical specie of the Cerrado and has occurred in most states. For fruit characteristics “sui generis”, with significant nutritional value. This study aimed to characterize the marolo (Anonna crasiflora Mart) during fruit development, through the evaluation of its proximal and mineral composition. The fruits 2012/2013 season, were picked to 12Km from the city of Itumirim, southern Minas Gerais, in intervals of 20 days from anthesis to maturity, and the first fruits were harvested 60 days after anthesis. The flowering marolo began in late September 2012, with fruiting initially observed at the end of October, with peak production at the end of February and beginning of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutritional value; Savannah fruits; Mineral content; Chemical fruits.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100013

Optimization of conditions to achieve high content of gamma amino butyric acid in germinated black rice, and changes in bioactivities
Provedor de dados: 116
Autores: CHAIYASUT,Chaiyavat; SIVAMARUTHI,Bhagavathi Sundaram; PENGKUMSRI,Noppawat; SAELEE,Manee; KESIKA,Periyanaina; SIRILUN,Sasithorn; FUKNGOEN,Pranom; JAMPATIP,Korawee; KHONGTAN,Suchanat; PEERAJAN,Sartjin.
Abstract The present study estimated the optimum germination conditions to achieve high content of Gamma-amino butyric acid (GABA) and other phytochemicals in Thai black rice cultivar Kum Payao (BR). The Box–Behnken design of response surface methodology was employed to optimize the germination conditions. The changes in the GABA, phytochemical content, impact of salt, and temperature stress variation on phytochemical content, and stability of GABA were studied. The results showed that 12 h of soaking at pH 7, followed by 36 h of germination was the optimum condition to achieve maximum GABA content (0.2029 mg/g of germinated BR (GBR)). The temperature (8 and 30 °C), and salt (50-200 mM NaCl) content affected the phytochemicals of GBR, especially GABA, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germinated rice; Gamma-amino butyric acid; Antioxidant; Stress; Stability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500083

Occurrence of non-O157 Shiga toxin-encoding Escherichia coli in artisanal mozzarella cheese in Brazil: risk factor associated with food workers
Provedor de dados: 116
Autores: CARDOSO,Patricia; MARIN,José Moacir.
Abstract Mozzarella cheese is considered a safe food due to the high temperature treatment used in the traditional process of stretching into hot water; however, a post-process contamination during the cheese manufacture or during the processing (before distribution) could occur. This study investigated the occurrence of Shiga toxin-encoding Escherichia coli (STEC) strains in homemade-mozzarella cheese. In total, 59 raw milk cheese samples collected at a local producer in the Jequitinhonha Valley (Northeast of Minas Gerais, Brazil) were submitted for microbiological analysis, and 38 (64.4%) tested positive for E. coli. Then, 147 strains of E. coli were isolated from positive samples and screened by polymerase chain reaction for the presence of the genes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Escherichia coli; Virulence genes; Homemade cheese; Food handler contamination.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100041

Biochemical composition of some Egyptian seaweeds with potent nutritive and antioxidant properties
Provedor de dados: 116
Autores: ISMAIL,Gehan Ahmed.
Abstract The present study investigated the biochemical composition of three seaweeds; Ulva fasciata (Chlorophyta), Sargassum linifolium (Phaeophyta) and Corallina officinalis (Rhodophyta). Total chlorophyll content was maximum in U. fasciata (34.06mg/g dry wt.) while carotenoid content was the highest in C. officinalis (3.8 mg/g dry wt.). The uppermost level of carbohydrates was (27.98% of dry wt.) in C. officinalis and proteins were maximum (14.89%) in S. linifolium. Aspartic, glutamic, alanine, leucine and proline were common amino acids in the three tested species. The polyunsaturated ω6 and ω3 essential fatty acids were recorded in S. linifolium (3.28%) and in U. fasciata (3.18%). The results showed that U. fasciata contained the highest amounts of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seaweeds; Biochemical composition; Elemental analysis; Antioxidant activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200294

Cytotoxic, genotoxic and mutagenic potential of UHT whole milk
Provedor de dados: 116
Autores: CARVALHO,Brenda de Lima; SALES,Ila Monize Sousa; PERON,Ana Paula.
Abstract This study evaluated the action at the cellular level of long life whole milk, full type of six renowned companies operating in the Brazilian market, as well as in other South American countries. The evaluation was performed using root meristem cells of Allium cepa L., at exposure times 24 and 48 hours, directly in milk products marketed. The results indicated that all the milk samples reduced root meristem cell proliferation, proving, in this study, a significant cytotoxic effect. Still, exposure to milk resulted in a significant frequency of mitotic spindle changes in meristem cells, characterizing these foods as genotoxic and mutagenic under the study conditions. It can be concluded that the long life milk samples caused significant genetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ultra-pasteurized milk; Cell division; Mitotic spindle alterations; Meristematic tissue.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200275

Investigation of phytochemical contents, in vitro antioxidant and antibacterial behavior and in vivo anti-inflammatory potential of Ecballium elaterium methanol fruits extract
Provedor de dados: 116
Autores: FELHI,Samir; SAOUDI,Mongi; DAOUD,Amal; HAJLAOUI,Hafedh; NCIR,Marwa; CHAABANE,Rim; EL FEKI,Abdelfattah; GHARSALLAH,Néji; KADRI,Adel.
Abstract Ecballium elaterium species are mostly used as therapeutic agents and food ingredient. The current work was designed to investigate phytochemical contents, antioxidant, antibacterial, and anti-inflammatory properties of methanol fruits extract of Ecballium elaterium. Good antioxidant activity was observed with IC50 values of 156 ± 4 and 377 ± 6 μg/mL for DPPH and ABTS, respectively, and EC50 of 126 ± 4 µg/mL for FRAP assays, which is related with their richness in total phenolic, flavonoid and condensed tannins contents. The results of antibacterial activity showed the effectiveness of methanol extract against Bacillus cereus with value of inhibition zone diameter of 15 ± 0 mm and a MIC and MBC values of 6 ± 0 and 12 ± 0 mg/mL, respectively. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecballium elaterium methanol fruits extract; Phytochemical contents; FT-IR analysis; In vitro antioxidant and antibacterial behavior; In vivo anti-inflammatory potential.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400558

Preparation of lasagnas with dried mix of tuna and tilapia
Provedor de dados: 116
Autores: KIMURA,Katia Setsuko; SOUZA,Maria Luiza Rodrigues de; GASPARINO,Eliane; MIKCHA,Jane Martha Graton; CHAMBÓ,Ana Paula Sartorio; VERDI,Rafaela; CORADINI,Melina Franco; MARQUES,Diego Rodrigues; FEIHRMANN,Andresa; GOES,Elenice Souza dos Reis.
Abstract The aim of this study was to develop a lasagna pasta enriched with dried mix of tuna (30%) and tilapia (70%) and formulate ready lasagna with enriched pasta. Lasagna pasta was elaborated with increasing levels (0, 5, 10 and 15%) of dried mix. Moisture, lipids and calories were not different between the inclusion levels; crude protein and ash increased linearly, carbohydrates reduced linearly, according to increasing levels of inclusion. There was an increase in n-3 and n-6 fatty acids with the inclusion of mix in lasagna. Between lasagna prepared with different sauces (tuna, chicken and bolognese), and pasta with 15% mix, it was observed that tuna lasagna had lower moisture content and higher protein, lipids, ash, carbohydrates and calories. All...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish processing waste; Pasta enrichment; Oreochromis niloticus; Thunnus sp.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300507

Total phenolics, antioxidant capacity, colour and drying characteristics of date fruit dried with different methods
Provedor de dados: 116
Autores: İZLİ,Gökçen.
Abstract Date slices were dried with the three drying methods convective (60, 70 and 80 °C), microwave (120 W) and freeze drying to determine drying characteristics and to compare the dried fruit quality. All colour parameters changed depending on the drying method and colours closest to the fresh sample were obtained with freeze drying. It is interesting to note that the total phenolic content and antioxidant capacity in each sample rose when looked at in relation to the fresh sample. In particular, microwave-dried samples were recorded as having the highest total phenolic content and the highest antioxidant capacity. To explain the drying kinetics of the date slices, nine thin-layer drying models were also attempted. Based on statistical tests, the model...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drying methods; Thin-layer; Date slices; Colour; Total phenolic content.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100139

Effects of puerarin on blood lipids and inflammatory factors in rats with lower limb arteriosclerosis obliterans
Provedor de dados: 116
Autores: LI,Bo; WEN,Shiqi; CHEN,Quan; NIU,Qibing; DONG,Fang; SUN,Wanli; DU,Junjun.
Abstract This study investigated the effects of puerarin (PUE) on blood lipid and inflammatory factor levels in rats with lower limb arteriosclerosis obliterans (ASO). Sixty rats were randomly divided into control, model, simvastatin, low-PUE, middle-PUE and high-dose PUE group. The animals in later 5 groups were with lower limb ASO, and the later 4 groups were given 1 mg/kg simvastatin and 5, 10 and 20 mg/kg PUE, respectively. The blood lipid and inflammatory factor levels were determined. Results showed that, the serum total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and high-sensitivity C-reactive protein (hs-CRP) level in model group were significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Puerarin; Blood lipid; Inflammatory factor; Lower limb; Arteriosclerosis obliterans.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500160

Modelling the effect of temperature on the water sorption isotherms of chitosan films
Provedor de dados: 116
Autores: AGUIRRE-LOREDO,Rocio Yaneli; RODRIGUEZ-HERNANDEZ,Adriana Inés; VELAZQUEZ,Gonzalo.
Abstract The interaction of the water molecules from the environment with foods and other materials can be evaluated using sorption isotherms. Films and biodegradable films are susceptible to changes in their functional characteristics due to adsorbed water. The amount of moisture that biodegradable films can adsorb depends on the temperature, relative humidity of the storage area and chemical composition. Several mathematical models can be used to describe the behavior of sorption isotherms in biodegradable films and some of them have been modified to include the temperature parameter into the equation. In this research, the original and modified BET, GAB, Halsey, Henderson and Oswin models were assessed to determine their suitability describing the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chitosan film; Moisture adsorption isotherm; GAB model.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100112

Variation of structures of ingredients of desiccated coconut during hydrolysis by hydrochloric acid at low temperature
Provedor de dados: 116
Autores: XIONG,Jian; WU,Hengyuan; YE,Jun.
Abstract Owing to the high content of lignocellulose, desiccated coconut become a healthy material for dietary fiber supplementation. In this study, the changes in solubility of the fibers of desiccated coconut were evaluated. The changes of the pHs and weight losses were studied. Furthermore, variations of the ingredient structures of desiccated coconut by hydrolysis by hydrochloric acid were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). After hydrolysis 30 s, the pHs of all systems increased, while six hours later, the pH of only system with initial pH = 1.00 decreased. The decline of pH only existed in hydrolysis systems with initial pH = 1.00, there is no relevant with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coconut; Hydrolysis; Dietary fiber.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400593

Effect of pH at drainage on the physicochemical, textural and microstructural characteristics of mozzarella cheese from goat milk
Provedor de dados: 116
Autores: PAZ,Noelia Fernanda; GONÇALVEZ DE OLIVEIRA,Enzo; VILLALVA,Fernando Josué; ARMADA,Margarita; RAMÓN,Adriana Noemí.
Abstract The aim of this study was a contribution to standardazation the process of making mozzarella cheese from goat milk by draining at different pH values 5.0 (MC50), 5.3 (MC53) and 5.6 (MC56), so as to obtain a product with suitable physicochemical, microstructural and textural characteristics. MC50 had lower protein and calcium, with very few strands. MC53 had adequate moisture content, fat, protein and calcium. The cheese yield was higher, the hardness parameters were lower, and the microstructure revealed the presence of long, thin strands, giving it the distinctive texture for this type of cheese. MC56 curd did not reach a good stretching property, requiring longer exposure to heating to obtain the yarn. This resulted in lower retention of fat,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goat milk; Mozzarella; Cheese; PH; Microstructure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200193

Assessment of human health risk associated with the presence of pesticides in chicken eggs
Provedor de dados: 116
Autores: HAMID,Almas; YAQUB,Ghazala; AHMED,Sajid Rashid; AZIZ,Nida.
Abstract The presence of pesticides in the environment is highly toxic to environment and human health. Aim of the study was determination, quantification and assessment of associated health risk due to presence of pesticide residues in chicken eggs using high pressure liquid chromatography. HPLC method was successfully employed and validated. From collected samples pesticides were extracted in presence of petroleum ether and acetonitrile. Bifenthrin and Difenoconazole residues were found in all samples with different concentration exceeding maximum residue limits (MRL) of Codex Alimentarius Commission. However imidacloprid was not detected in any sample. Concentration of bifenthrin in house egg samples ranged from 0.256206 to 4.112387 mg/kg while in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organochlorine pesticides; HPLC; Chicken eggs; Poultry samples; Maximum residue limits.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300378

A functional food: a traditional Tarhana fermentation
Provedor de dados: 116
Autores: KIVANÇ,Merih; FUNDA,Ebru Güney.
Abstract White wheat flour, concentrated full fat yoghurt, tomato paste, onion, red and green paprika, and mint and salt are used in the preparation of Tarhana. During the 7-day Tarhana fermentation period, the acidity increased from 1.10% to 3.25%, the pH decreased from 5.22 to 4.13, and the moisture decreased from 70.12% to 26.15%. The chemical composition of the Tarhana at the end of fermentation was determined as: moisture 9.55%, protein 12.05%, total ash 5.65%, salt 5.65%, and fat 4.88%. During the fermentation, the lactic acid bacteria count of increased from 1.32 X 102 to 4.20 X 104 CFU/g, the total mesophilic aerobe bacteria count increased from 1.75 X 101 to 2.28 X 102 CFU/g, the yeast count increased from 3.45 X 10 1 to 2.40 X 105 CFU/g, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tarhana; Lactic acid bacteria; Yeast; Fermentation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200269

Prospects of robotics in food industry
Provedor de dados: 116
Autores: IQBAL,Jamshed; KHAN,Zeashan Hameed; KHALID,Azfar.
Abstract Technological advancements in various domains have broadened the application horizon of robotics to an incredible extent. Highlighting a very recent application area, this paper presents a comprehensive review of robotics application in food industry. Robots essentially have the potential to transform the processes in food processing and handling, palletizing and packing and food serving. Therefore, recent years witnessed tremendously increased trend of robots deployment in food sector. Consequently, the aspects related with robot kinematics, dynamics, hygiene, economic efficiency, human-robot interaction, safety and protection and operation and maintenance are of critical importance and are discussed in the present review. A comparison of actual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Robotics in food industry; Cyber physical systems; Mechatronics in food handling and processing; Food serving robots.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200159

Screening for quality indicators and phenolic compounds of biotechnological interest in honey samples from six species of stingless bees (Hymenoptera: Apidae)
Provedor de dados: 116
Autores: OLIVEIRA,Rosane Gomes de; JAIN,Sona; LUNA,Alexandre Cândido; FREITAS,Lisiane dos Santos; ARAÚJO,Edilson Divino de.
Abstract Honey from stingless bees of the genus Melipona is a well sought product. Nevertheless lack of legal frameworks for quality assessment complicates the evaluation of food safety and marketing of these products. Seeking to assess the quality of honey from the bees of this genus, physical and chemical analyses, identification of phenolic compounds, and microbiological evaluation from six species of stingless bees was performed. The honey samples showed high reducing sugars, low protein levels and a balanced microbiota. High total phenols and flavonoids and higher antioxidant activity were also recorded. Different phenolic compounds of great biotechnological potential were identified and of these apigenin, kaempferol and luteolin were identified for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Honey; Chromatography; Flavonoids; Phenols; Antioxidants; Stingless bees; Pollen types.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400552

Incidence of aflatoxin M1 in fresh milk from small farms
Provedor de dados: 116
Autores: GONÇALVES,Luana; DALLA ROSA,Andréia; GONZALES,Samantha Lemke; FELTES,Maria Manuela Camino; BADIALE-FURLONG,Eliana; DORS,Giniani Carla.
Abstract The objective of this work was to determine aflatoxin M1 in fresh milk from fifty-two small farms in the city of Concórdia - SC, Brazil. Samples from the cooling tanks of each property were collected from November 2014 to January 2015. The QuEChERS method was used for the extraction of aflatoxin M1, and quantification was performed in UHPLC-FL. 40.4% of the analyzed samples (eg, 21 samples) showed contamination levels by aflatoxin M1 above the maximum limit allowed by the Brazilian regulation, which is 0.5 μg L-1. These results suggest the importance of implementing Good Practices in obtaining feed for dairy cows, since the contamination of milk by aflatoxin M1 occurs through the biotransformation of aflatoxin B1, after the ingestion of feed or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aflatoxins; QuEChERS; UHPLC-FL.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000700011

Effects of long-term consumption of high fructose corn syrup containing peach nectar on body weight gain in sprague dawley rats
Provedor de dados: 116
Autores: OZCAN SINIR,Gulsah; SUNA,Senem; INAN,Sevda; BAGDAS,Deniz; TAMER,Canan Ece; COPUR,Omer Utku; SIGIRLI,Deniz; SARANDOL,Emre; SONMEZ,Gursel; ERCAN,Ilker; EVRENSEL,Turkkan; TARIM,Omer Faruk; EREN,Erdal; UYLASER,Vildan; INCEDAYI,Bige.
Abstract High fructose corn syrup (HFCS) is one of the most used sweeteners in the food industry. Health concerns regarding the consumption of HFCS-containing foods have developed in parallel with the increasing amount of people who become overweight. This study was conducted to investigate whether HFCS-containing peach nectar (pn-HFCS) consumption has more detrimental effects on anthropometrical and biochemical parameters compared with sucrose-containing peach nectar (pn-sucrose). Fifty-day-old Sprague Dawley rats were divided into three groups and were fed (A) pn-HFCS + ad libitum chow, (B) pn-sucrose + ad libitum chow and (C) only ad libitum chow for 7 months. The percentage change in body weight (PCBW), body mass index (BMI), and Lee index were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HFCS; Weight gain; Insulin; Leptin; BMI; Peach nectar.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200337

Evaluation of volatile profiles obtained for minimally-processed pineapple fruit samples during storage by headspace-solid phase microextraction gas chromatography-mass spectrometry
Provedor de dados: 116
Autores: TURAZZI,Francielle Crocetta; MORÉS,Lucas; MERIB,Josias; CARASEK,Eduardo; NARAIN,Narendra; LIMA,Lucélia Kátia de; NUNES,Maria Lúcia.
Abstract This paper describes the application of the solid-phase microextraction (SPME) technique for the determination and monitoring of the volatile profile of minimally-processed pineapple fruit stored at various temperatures (-12 °C, 4 °C and 25 °C) for different periods (1, 4 and 10 days). The SPME fiber coating composed of Car/PDMS presented the best performance. The optimal extraction conditions obtained through a Doehlert design were 60 min at 35 °C. The profiles for the volatile compounds content of the fruit at each stage of storage were determined by gas chromatography-mass spectrometry (GC-MS). The variation in the volatile profile over time was greater when the fruit samples were stored at 25 °C and at -12 °C compared to 4 °C. Thus, according...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Volatile profile; Pineapple; Minimally processed; Microextraction; Gas chromatography.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400663

Optimization of tropical fruit juice based on sensory and nutritional characteristics
Provedor de dados: 116
Autores: CURI,Paula Nogueira; ALMEIDA,Aline Botelho de; TAVARES,Bruna de Sousa; NUNES,Cleiton Antônio; PIO,Rafael; PASQUAL,Moacir; SOUZA,Vanessa Rios de.
Abstract The objective of this study was, through mixing design and response surface methodology, to optimize a reduced calorie mixed juice of persimmon, orange and pineapple based the sensory and nutritional characteristics. This study also aimed to carry out the survey of the physicochemical characteristics that are desirable in this product. It was found that juice of these fruits, when combined, have better sensory and nutritional characteristics than when isolated. The consumer has a preference for mixed fruit juices made up of orange, pineapple and persimmon that are sweeter and more acidic and regarding color, consumers prefer a juice with less intense red color. According to evaluation, the most recommended mixed juice formulations are 50%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mixed juice; Persimmon; Mixture design; Response surface.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200308

Biochemical assessment of oxidative stress by the use of açai (Euterpe oleracea Martius) gel in physically active individuals
Provedor de dados: 116
Autores: VIANA,Daniela Soares; CARVALHO,Lucia Maria Jaeger de; MOURA,Mirian Ribeiro Leite; PEIXOTO,Jacqueline Carvalho; CARVALHO,José Luiz Viana de.
Abstract The relation between oxidative stress and inflammation induced by diseases and exercise has increased the interest in the benefits of antioxidant supplements in the improvement of health and physical and mental performance. The aim of this study was to evaluate the effectiveness of açai gel in reducing oxidative stress in individuals engaged in physical activities as well as their acceptance. Sensory evaluation was performed to determine its acceptability and the biochemical parameters related to immune profile and biomarkers of muscle, liver and oxidative stress, with and without the use of gel were evaluated. The appearance, sweetness and overall impression of the açai gel were considered good. It was observed a significant increase in CK...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Açai; Sensory analysis; Biochemical evaluation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100090

Ultrasound-assisted aqueous enzymatic extraction of oil from perilla seeds and determination of its physicochemical properties, fatty acid composition and antioxidant activity
Provedor de dados: 116
Autores: LI,Huizhen; ZHANG,Zhijun; HE,Dongliang; XIA,Yaoyao; LIU,Qingye; LI,Xiaojun.
Abstract Response surface methodology (RSM) was used to optimize ultrasound-assisted aqueous enzymatic extraction (UAAEE) conditions for perilla seed oil. Under the optimum conditions—which were a liquid-to-solid ratio of 4.4:1, a hydrolysis time of 2.66 h, a hydrolysis temperature of 50.87 °C and an ultrasound treatment time of 24.74 min—an oil yield of 31.34% was obtained. Comparisons of the physicochemical characteristics of oil obtained using UAAEE with those of oil obtained by solvent extraction (SE oil) and cold pressing extraction (CPE oil) revealed similar refractive indices and saponification values, but UAAEE oil had a higher iodine value and better stability against oxidation, with a low peroxide value. UAAEE oil contained higher levels of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Perilla seed oil; Ultrasound-assisted aqueous enzymatic extraction; Physical and chemical characteristics; Fatty acid composition; Antioxidant activities.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500071

Synbiotic preparation with Lactic acid bacteria and inulin as a functional food: In vivo evaluation of microbial activities, and preneoplastic aberrant crypt foci
Provedor de dados: 116
Autores: CHAIYASUT,Chaiyavat; PATTANANANDECHA,Thanawat; SIRILUN,Sasithorn; SUWANNALERT,Prasit; PEERAJAN,Sartjin; SIVAMARUTHI,Bhagavathi Sundaram.
Abstract Host microbiome and metabolome are associated with the incidence of colorectal cancer (CC), one of the major health problems in developed countries. The pro and prebiotic supplementation helps to improve the host health. Inulin is one such prebiotic used for the enhancement of naïve probiotic bacterial population. This paper explains the impact of inulin (PRE) extracted from Jerusalem artichoke (JA), Lactobacillus plantarum HII11 (PRO), and synbiotic (SYN; inulin + L. plantarum HII11) preparation on Azoxymethane mediated CC induced rat model with respect to changes in microbial load, microbial enzymes, and preneoplastic aberrant crypt foci. The results suggested that the PRE and SYN supplementation effectively reduced the selected pathogenic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inulin; L. plantarum; Probiotic; Prebiotic; Synbiotic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200328

Volatile compounds profiles in unroasted Coffea arabica and Coffea canephora beans from different countries
Provedor de dados: 116
Autores: KNYSAK,Daniel.
Abstract Aroma is the most important factor in assessing the quality of coffee. The volatile compounds profile could be very important to confirm the authenticity of Coffea arabica. The study was carried out on two species of unroasted coffee beans: Coffea arabica from Colombia and Nepal and Coffea robusta from Uganda and Vietnam. Both Coffea arabica and Coffea canephora were imported to the country of analysis approximately 5 months prior to the research. Before the analysis, the coffee beans were kept in a sealed, dark container, at 21 °C. The tests were performed using an electronic nose. Its functioning is based on gas chromatography with two columns of different polarities in parallel and with 2 ultra sensitive Flame Ionization Detectors (FID). With...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Volatile compounds profiles; Coffee; Coffea Arabica; Coffea canephora.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300444

Ascorbic acid and phenolic contents, antioxidant capacity and flavonoids composition of Brazilian Savannah native fruits
Provedor de dados: 116
Autores: ALVES,Aline Medeiros; DIAS,Tiago; HASSIMOTTO,Neuza Mariko Aymoto; NAVES,Maria Margareth Veloso.
Abstract Brazilian Savannah native fruits have been investigated as potential sources of antioxidant substances. Cagaita, cerrado cashew and gabiroba were characterized with regard to the ascorbic acid and phenolic contents, antioxidant capacity and flavonoids composition. Gabiroba presented higher contents of ascorbic acid (61.5 mg.100 g–1), total phenolic compounds (1,222.59 mg GAE.100 g–1), and antioxidant capacity (DPPH, FRAP and ORAC assays) than cagaita and cerrado cashew. The correlation coefficients between total ascorbic acid or total phenolic contents and antioxidant capacity were strong and significant (0.970 ≤ r ≤ 0.998). Quercetin derivatives were found in cagaita (1.94 mg.100 g–1) and myricetin derivatives in cerrado cashew (1.2 mg.100 g–1)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Eugenia dysenterica DC; Anacardium othonianum Rizz.; Campomanesia adamantium (Cambess.) O. Berg; Flavonoids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400564

Mineral element and heavy metal (cadmium, lead and arsenic) levels of bee pollen in Turkey
Provedor de dados: 116
Autores: ALTUNATMAZ,Sema Sandikci; TARHAN,Duygu; AKSU,Filiz; BARUTÇU,Umıt Bora; OR,Mehmet Erman.
Abstract In this study, mineral element and heavy metal levels in bee pollen produced in various regions of Turkey (20 samples) and imported bee pollen (4 samples), were determined using an Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) device. Mineral and heavy metal levels of bee pollens produced in Turkey were determined to be within the following ranges (minimum-maximum, µg/gpollen); Cr (chromium): 0.124-1.595, Cu (copper): 3.728-14.994, Fe (iron): 28.603-725.360, Mg (magnesium): 271.107-1278.340, Mn (manganese): 8.151-201.036, Se (selenium): 0.593-5.085, Zn (zinc): 14.832-39.079, B (boron): 0.592-61.33, Ni (nickel): 0.002-1.761, Si (silicon): 0.082-10.500, K (potassium): 992.107-2894.154, Ca (calcium): 491.853-1472.102, P...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bee pollen; Heavy metal; ICP-OES; Minerals.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500136

Microencapsulation by lyophilization of carotenoids produced by Phaffia rhodozyma with soy protein as the encapsulating agent
Provedor de dados: 116
Autores: NOGUEIRA,Michelle Barboza; PRESTES,Caroline Furtado; BURKERT,Janaina Fernandes de Medeiros.
Abstract Carotenoids are pigments that can be applied to food but they are unstable towards certain food intrinsic conditions, as well as processing ones. Microencapsulation is an alternative to increasing their stability. This study aimed to produce carotenoids by Phaffia rhodozyma crops and promote their microencapsulation by lyophilization with soy protein as the wall material, in different proportions. High process yield of 96% and encapsulation efficiency of around 65% were observed at the ratios under study. Well-defined and separate micrometer-scale particles with different shapes and sizes were formed and the protection of the compounds of interest was confirmed by differential scanning calorimetry which showed that the endothermic event – typical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pigments; Microbial cultures; Microcapsules.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000700001

Ultrasound-assisted extraction of fructans from agave (Agave tequilana Weber var. azul) at different ultrasound powers and solid-liquid ratios
Provedor de dados: 116
Autores: SÁNCHEZ-MADRIGAL,Miguel Ángel; AMAYA-GUERRA,Carlos Abel; QUINTERO-RAMOS,Armando; BÁEZ-GONZÁLEZ,Juan Gabriel; NÚÑEZ-GONZÁLEZ,María Adriana; RUIZ-GUTIÉRREZ,Martha Graciela; GARZÓN-TIZNADO,José Antonio.
Abstract The effects of ultrasound-assisted extraction (UAE) at different ultrasound power densities (UPDs; 40, 80, and 120 mW/mL) and solid:liquid (S:L) ratio (1:2, 1:3, and 1:6) on the extraction of carbohydrates from Agave tequilana plant of different ages were evaluated. Extracts obtained (6- and 7-year-old plant) were analyzed in the yield of carbohydrates (YC), fructan (FRU) content, simple sugars, fructan profile and the average degree of polymerization (DPn). UPD, S:L ratio, and plant age all affected YC, FRU, and DPn. Maximum YC and FRU were obtained from the older agave with UPD and S:L ratio of 120 mW/mL and 1:6, respectively; while glucose, fructose, and sucrose were highly released from the younger plant. Agave of 7-year-old presented the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agave; Fructans; Ultrasound; Power density; Solid:liquid ratio; Plant age.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200261

Effect of vacuum and oven drying on the radical scavenging activity and nutritional contents of submerged fermented Maitake (Grifola frondosa) mycelia
Provedor de dados: 116
Autores: SIM,Kheng Yuen; LIEW,Jeng Young; DING,Xin Yi; CHOONG,Wan Shin; INTAN,Seri.
Abstract Maitake (Grifola frondosa) mycelia contain high dietary and medicinal values that have gained great attentions from consumers. Proper drying can preserve their bio-availabilities prior to subsequent processing or consumption. Pure Maitake (Grifola frondosa) strain was cultivated in Mushroom Complete Medium (MCM) using submerged fermentation for 14 days. Maitake mycelia were harvested and treated respectively by vacuum, oven drying treatments while the fresh mycelia were assigned as control. All the samples were tested for Total Phenolic Content, DPPH radical scavenging assays and nutritional contents. Submerged fermentation produced mycelia biomass (1.3 ± 0.1 g/L) within 14 days of fermentation. Both the pH and reduced sugar content had decreased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: DPPH radical scavenging; Maitake mycelia; Submerged fermentation; Total soluble protein; Vacuum drying.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500131

Partial replacement of sodium chloride by potassium chloride in the formulation of French bread: effect on the physical, physicochemical and sensory parameters
Provedor de dados: 116
Autores: GUSMÃO,Thaisa Abrantes Souza; ALEXANDRE,Anatalha Marinho; SOUZA,Nayara Gabriela Gonçalves de; SASSI,Katharina Kardinele Barros; GUSMÃO,Rennan Pereira de; MOREIRA,Ricardo Targino.
Abstract This study aimed to the replacement of sodium chloride (0.4 to 1.6%) by potassium chloride (0.2 to 0.8%) in French bread formulation and evaluate its effect on physical, physicochemical and sensory characteristics. For the preparation of bread was used a factorial design 22 with 4 factorial points and 3 central points, totaling 7 experiments. The physical and physicochemical parameters analyzed were: specific volume, moisture, color of the peel and crumb, pH, acidity and texture profile, sodium and potassium. The sensory evaluation of bread was performed using quantitative descriptive analysis, with 12 sensory terminologies. Response variables of salty taste and sensory chewiness generated statistically significant models. The results indicated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypertension; Prevention; Sodium reduction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500055

Effect of Bacillus spp. on Aspergillus westerdijkiae growth, sporulation and ochratoxin A production in green-coffee medium
Provedor de dados: 116
Autores: EINLOFT,Tiago Centeno; OLIVEIRA,Patrícia Bolzan de; VERAS,Flávio Fonseca; WELKE,Juliane Elisa; MALLMANN,Carlos Augusto; DILKIN,Paulo; DIONELLO,Rafael Gomes.
Abstract Aspergillus westerdijkiae is one of the most important spoilage and toxigenic fungi contaminating coffee beans and may produce ochratoxin A (OTA), a mycotoxin that characterize a health risk to the coffee consumers. Biological control strategies can be used for prevention of fungal invasion and decrease mycotoxin exposure. The aims of this study were to evaluate the in vitro effect of three Bacillus sp. biocontrol candidates on A. westerdijkiae mycelial growth, spore counts and OTA production. A green-coffee based medium was inoculated with A. westerdijkiae and Bacillus spp. (B. safensis RF69, B. amyloliquefaciens RP103 and B. subtilis RP242) and after incubation, the fungal growth, sporulation and mycotoxin production was evaluated. Mycelial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Food mycology; Mycotoxins; Fungi; Food safety.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000700024

Effects of ractopamine hydrochloride and immunological castration in pigs. Part 2: belly quality characteristics and fatty acid composition
Provedor de dados: 116
Autores: COSTA E SILVA,Letícia Cristina; BARBOSA,Roger Darros; SILVEIRA,Expedito Tadeu Facco.
Abstract The effects of immunocastration and ractopamine in the diet on the belly quality were investigated from two crossbred pigs under different conditions of production, diet, management, and slaughter arranged in factorial design using two levels of addition of ractopamine in the diet, 0 and 7.5 ppm, and three genders (gilts, immunocastrated and barrows). The quality of bellies were analyzed for chemical composition, pH, meat and fat color, backfat thickness and fatty acid profile of the fat. The addition of ractopamine showed no significant influence on pH, color and chemical composition in two crossbred pigs. The immunocastrated had thicker belly backfat compared to the bellies of the gilts. The contents of fatty acids polyunsaturated, linoleic,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ractopamine; Immunocastration; Belly quality; Fatty acids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300404

Chemical composition of different muscle zones in pirarucu (Arapaima gigas)
Provedor de dados: 116
Autores: MARTINS,Mayara Galvão; MARTINS,Déborah Elena Galvão; PENA,Rosinelson da Silva.
Abstract Identifying potential patterns in pirarucu (Arapaima gigas) composition, as a function of the different fish muscle zones (dorse, venter, ventrecha and tail), was the main objective of this research. For such, the different pirarucu muscle zones were evaluated, in order to obtain proximate composition and minerals content. It was also determined amino acids and fatty acids contents in fish muscle. The dorsal, ventral and tail muscle zones presented similar moisture (76.5-78.2%), protein (17.8-18.9%), total lipids (1.0-1.5%) and ash (0.9-1.2%) contents. On the other hand, the ventrecha zone presented 25.8% of protein and the major total lipids content (17.1%). The main minerals found in fish muscle were K (183.5-288.6 mg/100 g muscle) and Na...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arapaima gigas; Composition; Minerals; Amino acids; Fatty acids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400651

Effect of the addition of peach palm (Bactris gasipaes) peel flour on the color and sensory properties of cakes
Provedor de dados: 116
Autores: MARTÍNEZ-GIRÓN,Jader; FIGUEROA-MOLANO,Ana María; ORDÓÑEZ-SANTOS,Luis Eduardo.
Abstract This study aimed to evaluate the color and sensorial characteristics of a cake made with different amounts of flour made with peach palm peel flour. The flour was added at different concentrations, 2.5, 5.0, 7.5, and 10% (w/w), including a control (tartrazine). Physiochemical analyses were carried out on the cakes, including total carotenoids, CIE-L*a*b* color coordinates, and sensorial attributes. The results demonstrated that the peach palm peel flour substitution increased the total carotenoid content of the cakes. The color test showed that high levels of peach palm peel flour resulted in a decrease in the values of lightness (L*) and hue angle (h°), while the values of browning index (BI) and color change (ΔE*) increased significantly. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: By-product; Carotenoids; Sensorial; Lightness; Chromaticity; Hue.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300418

Processing potential of jellies from subtropical loquat cultivars
Provedor de dados: 116
Autores: CURI,Paula Nogueira; NOGUEIRA,Paulyene Vieira; ALMEIDA,Aline Botelho de; CARVALHO,Cynara dos Santos; PIO,Rafael; PASQUAL,Moacir; SOUZA,Vanessa Rios de.
Abstract To increase the availability to consumers and add more value to loquat (Eriobotrya japonica Lindl.), which is a very perishable and seasonal fruit, and in order to identify which cultivars grown in subtropical regions are more suitable for jelly processing, the objective of this study was to evaluate the influence of different loquat cultivars (Fukuhara, Kurisaki, Mizumo, Mizuho and Mizauto) grown in subtropical regions of Brazil on the physicochemical characteristics, rheological properties and sensory acceptance of the resulting jelly. Based on sensory acceptance the most suitable loquat cultivars for jelly processing are Kurisaki and Mizuho. In this study it was found that the consumer prefers a more acidic, less sweet, less firm or softer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eriobotrya japonica; Jelly; Sensory quality; Consumer profile.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100070

Utilization of residue from cassava starch processing for production of fermentable sugar by enzymatic hydrolysis
Provedor de dados: 116
Autores: SOUTO,Luciana Reis Fontinelle; CALIARI,Márcio; SOARES JÚNIOR,Manoel Soares; FIORDA,Fernanda Assumpção; GARCIA,Marina Costa.
Abstract The aim of this study was to characterize and perform enzymatic hydrolysis of cassava peeling residue (peel and inner peel), mainly composed of peels and small pieces. Residue was sanitized, dried at 55 °C for 24 hours and ground. The obtained flour showed pH of 4.85; 72.53 g 100 g–1 moisture; 5.18 mL 1M NaOH 100 g–1 acidity; 60.68 g 100 g–1 starch; 1.08 g 100 g–1 reducing sugar; 1.63 g 100g–1 ash; 0.86 g 100 g–1 lipid and 3.97 g 100 g–1 protein. Enzymatic hydrolysis was carried out by means of rotational central composite design, analyzing the effects of concentrations of α-amylase enzyme (10 to 50 U g starch–1), and the amyloglucosidase enzyme (80 to 400 U g starch–1) on variable responses: percent conversion of starch into reducing sugars (RSC)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihotesculenta Cranz; Starch hydrolysate; Α-amylase; Amyloglucosidase; Reducing sugars.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100019

Influence of temperature, pH and salts on rheological properties of bitter almond gum
Provedor de dados: 116
Autores: HOSSEINI,Ebrahim; MOZAFARI,Hamid Reza; HOJJATOLESLAMY,Mohammad; ROUSTA,Esmat.
Abstract This study focuses on the rheological properties of bitter almond gum (BAG) exudate at different shear rates, concentrations, temperatures, pH, and in the presence of various salts. Rheological data fitted with the Power law model revealed that BAG solutions exhibit non-Newtonian, shear thinning behavior without thixotropic effects at all tested concentrations and temperatures. Apparent viscosity of BAG solutions increased with the increasing gum concentrations and decreased with the increasing shear rate at a specified temperature. The viscosity reached a maximum value at pH 7 and it decreased at lower and higher pH values. Salts caused a reduction in viscosity. Comparatively, CaCl2 had a more pronounced effect than NaCl at a similar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apparent viscosity; Bitter almond gum; Gum exudate; Rheological parameters.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300437

Characterization and evaluation of stability of bioactive compounds in fruit smoothies
Provedor de dados: 116
Autores: MOURA,Sílvia Cristina Sobottka Rolim de; VISSOTTO,Fernanda Zaratini; BERBARI,Shirley Aparecida Garcia; SOUZA,Elaine de Cássia Guerreiro; TOTI,Fabíola Guirau Parra; ALVES JÚNIOR,Paulo.
Abstract Smoothies are drinks composed of a mixture of vegetables (fruits, vegetables), which can be added or not by milk or yogurt, being a high creamy, healthy beverage and a good source of energy, vitamins, and minerals. Samples of three commercial smoothies: Yellow Fruits (YF), Red Fruits (RF), and Green Vegetables (GV) stored in a glass packaging (260 mL) were characterized for pH, soluble solids (°Brix), water activity (aw), density, rheology and thermal properties, and stored at controlled temperatures of 10 °C and 25 °C in the absence of light. During the period of 180 days, the samples were evaluated for color, polyphenol and anthocyanin contents, and sensorially monitored by odor, taste, overall quality and color characteristics. The smoothies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Smoothie; Rheology; Phenolic compounds; Shelf-life; Sensory evaluation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200216

Rheological, pasting, thermal and retrogradation properties of octenyl succinic anhydride modified potato starch
Provedor de dados: 116
Autores: WON,Chuin; JIN,Yong Ik; CHANG,Dong-Chil; KIM,Misook; LEE,Youngseung; GANESAN,Palanivel; LEE,Yun-Kyung; CHANG,Yoon Hyuk.
Abstract The objective of the present study was to investigate the rheological, pasting, and thermal properties of octenyl succinic anhydrate (OSA)-modified potato starch. Potato starch was modified using different concentrations of OSA (0, 1, 3, and 5%, v/v). The degree of substitution (DS) for the OSA-modified starch ranged from 0.0012 to 0.0055. The amylose leaching values of native and OSA-modified potato starch with different DS levels were in the range of 47.09-87.32%. The gel strength values of the OSA-modified starch were lower than those of native potato starch. Rapid Visco Analyzer data showed that peak, hot pasting, final and setback viscosities of the native starch decreased after OSA modification. Dynamic shear rheological tests, conducted at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Potato starch; Octenyl succinic anhydride; Rheological property; Pasting property; Retrogradation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200321

Antimicrobial and anti-inflammatory activities of Apis mellifera honey on the Helicobacter pylori infection of Wistar rats gastric mucosa
Provedor de dados: 116
Autores: AMARAL,Thiago Yamamoto; PADILHA,Igor Gomes; PRESÍDIO,Gustavo Alvares; SILVEIRA,Edmo Arruda Aguiar Sobreira da; DUARTE,Alysson Wagner Fernandes; BARBOSA,Ana Paula Fernandes; BEZERRA,Antônio Fernando de Souza; LÓPEZ,Ana Maria Queijeiro.
Abstract Considering that Helicobacter pylori, a bacterium able to colonize the upper gastrointestinal tract and cause mucosal injury, not always can be effectively eradicated by the traditional approaches, there is an interest in alternative therapies until a vaccine be available. Honey is a food supplement with high carbohydrate content and antioxidant activity, as well as broad antimicrobial spectrum. After analyzing the physicochemical and in vitro antimicrobial properties of an Apis mellifera honey from the Atlantic forest of Alagoas / Brazil, the purpose of the present work was evaluate its in vivo effects against Helicobacter pylori in the gastric mucosa of Wistar rats. First, it was verified the success of inoculation/infection of the pathogen in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gastritis; Peptic ulcer; Antioxidant; Anti-inflammatories; Antibiotic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500034

Limit growth of ice crystals under different temperature oscillations levels in nile Tilapia
Provedor de dados: 116
Autores: GUTIÉRREZ,Mirko Salomon Chávez; OLIVEIRA,Cintia Melgaço de; MELO,Fernanda Ramos; SILVEIRA JÚNIOR,Vivaldo.
Abstract The degenerative effect of temperature fluctuations during storage time is a critical condition that needs to be quantitatively characterized in products where drip losses are appreciable. In this work, real storage conditions were reproduced using freezers modified to cause 3 levels of temperature fluctuation (± 0, ± 3, ± 5; ± 7) during storage of Tilapia (Oreochromis sp), at temperature of –18 °C. The fast frozen tilapia muscle (freezing cabinet) was chosen to quantify the growth of ice crystals according to temperature fluctuations. The identification of crystals in the optical microscope as well as histological treatments and measurements using specific software has shown that the growth of ice crystals in the first days of storage follows an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freezing; Recrystallization; Cold chain; Temperature oscillations.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400673

The effect of ultrasound application and addition of leaves in the malaxation of olive oil extraction on the olive oil yield, oxidative stability and organoleptic quality
Provedor de dados: 116
Autores: SARI,Hafize Ayla; EKINCI,Raci.
Abstract This research examines the effect of adding olive leaf on the yield and quality of the olive oil extracted from malaxation and ultrasound application during the olive oil extraction process. The olive variety Ayvalık was used in the trials, which included leaf addition of 2% and 5% and ultrasound application of 5, 10, 15, 20, 25, 30, 35, and 40 minutes (min). Several values, such as maturity index and oil yield, as well as olive oil parameters, including free acidity, peroxide value, oxidative stability, and specific ultraviolet absorption, were analyzed and examined. We also carried out sensory analyses on the extracted olive oils. The results show that the product extracted has no sensory defects and exhibits a fruitiness level greater than 0....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Olive oil; Olive leaves; Ultrasound; Olive oil quality; Sensory analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300493

Effect of pre-emulsified sesame oil on physical-chemical and rheological properties of pork batters
Provedor de dados: 116
Autores: KANG,Zhuang Li; ZHU,Dong-yang; LI,Bin; MA,Han-Jun; SONG,Zhao-Jun.
Abstract Physical-chemical and rheological properties of pork batters as affected by replacing pork back-fat with pre-emulsified sesame oil were investigated. Replacement of pork back-fat with pre-emulsified sesame oil, improved L* value, moisture and protein content, hardness, cohesiveness, and chewiness, declined a* value, fat content and energy, but not affect cooking yield. When used pre-emulsified sesame oil to replace pork back-fat 50%, the sample had the highest L* value and texture. According to the results of dynamic rheological, replaced pork back-fat by pre-emulsified sesame oil increased the storage modulus (G') values at 80 °C, and formed firm gel. The result of Low-field nuclear magnetic resonance (LF-NMR) shown that the batters with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pre-emulsified sesame oil; Physical-chemical properties; Pork; Dynamic rheological; LF-NMR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400620

Optimization of culture medium for production of melanin by Auricularia auricula
Provedor de dados: 116
Autores: ZOU,Yu; HOU,Xiyan.
Abstract Melanin is a natural high molecular weight pigment with the huge application value and development potential in food industry. In the present study, medium composition for melanin production by fungus Auricularia auricula was investigated. Wheat bran extract, l-tyrosine, and CuSO4 were determined to optimize medium composition by response surface methodology with Box–Behnken design. Results indicated that the optimal medium composition was 26.80% (v/v) wheat bran extract, 1.59 g/L l-tyrosine, and 0.11 g/L CuSO4, and the maximum melanin yield was 519.54 mg/L. Melanin production through A. auricula fermentation avoided expensive enzymatic or complicated chemical methods for melanin extraction from tissues of plant or animal, which had the huge...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Optimization; Culture medium; Melanin; Auricularia auricula.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100153

Effect of size reduction on colour, hydration and rheological properties of wheat bran
Provedor de dados: 116
Autores: ONIPE,Oluwatoyin Oladayo; BESWA,Daniso; JIDEANI,Afam Israel Obiefuna.
Abstract The aim of this study was to determine the effect of size reduction of wheat bran (WB) on water holding capacity (WHC), water retention capacity (WRC), swelling capacity (SC); rheological and colour properties. Coarse WB exhibited the highest mean values for WHC (6.49 g/g), WRC (5.76 g/g), SC (7.67 g/g) and OHC (4.23 g/g), while these values were significantly reduced in fine WB. Size reduction increased lightness of WB as indicated by high L* values (62.65 to 75.80), Hue angle of 74.63 and whiteness index value of 81.42. Increasing WB additions increased water absorption of dough from 63 to 70.2%, while dough stability decreased from 12.5 min to 6.80 min. As coarse WB addition increased from 1 to 15 g extensibility decreased from 419 BU to 283 BU...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wheat bran; Rheology; Colour profile; Hydration properties; Mixing tolerance; Particle size.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300389

Tucupi creamy paste: development, sensory evaluation and rheological characterization
Provedor de dados: 116
Autores: COSTA,Telma dos Santos; CARMO,Juliana Rodrigues do; BRAGA,Adriano Cesar Calandrini; PENA,Rosinelson da Silva.
Abstract Tucupi, a fermented product obtained from cassava (Manihot esculenta Crantz) is widely employed in the cuisine of the Northern region of Brazil, however, its industrial application is incipient. This study used tucupi to prepare a creamy paste, which underwent sensory and rheological evaluation. Paste formulations with 5 to 20% concentrated tucupi were obtained. An acceptance test was used to assess the product’s acceptability regarding the attributes of color, aroma, flavor, texture, and overall impression. A purchase intention test of the product was also applied. The product’s rheology was studied at 25, 40, and 60 °C and the activation energy (Ea) was estimated. The internal preference mapping indicated that the paste formulation with 5% and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta; Cassava wastewater; Β-carotene; Preference mapping; Rheology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500115

Quality evaluation of red wines produced from the Isabella and Ives cultivar (Vitis labrusca): physicochemical parameters, phenolic composition and antioxidant activity
Provedor de dados: 116
Autores: ARCANJO,Narciza Maria de Oliveira; NERI-NUMA,Iramaia Angelica; BEZERRA,Taliana Kênia Alves; SILVA,Flávio Luís Honorato da; PASTORE,Glaucia Maria; MADRUGA,Marta Suely.
Abstract The objective of this study was to evaluate the quality of commercial red wines (Isabella and Ives [IsB]; Isabella, Ives, Seibel and Concord [IsSC]; and Isabella and Ives [IsBb]) produced from Isabella and Ives grapes grown in southern Brazil. The parameters required by Brazilian law were evaluated, and the chemical parameters of the phenolic compounds, organic acids, anthocyanins and antioxidant capacity were quantified for red wine samples containing the Isabella and Ives grape. All of the wine parameters were consistent with Brazilian legislation. There were significant differences (p&lt;0.05) among the wines in phenolic compound content, flavonoids, antioxidant activity measured by the oxygen radical absorbance capacity (ORAC) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: American grapes; Antioxidants; Fermented beverage; Phenolic compounds; Legislation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200184

Stability and degradation kinetics of crude anthocyanin extracts from H. sabdariffa
Provedor de dados: 116
Autores: SIPAHLI,Shivon; MOHANLALL,Viresh; MELLEM,John Jason.
Abstract Hibiscus sabdariffa is an under-utilized plant that has reported to have great potential in the food industry. The vibrant red pigment from the calyces indicate a source of anthocyanins. Anthocyanins would make ideal natural food colourants with additional nutritional benefits however stability is a hindering factor. Stability studies were the main focus of this study. Crude anthocyanins were extracted using four different solvent systems. The crude extracts were analysed under the following parameters; heat (50 and 80 °C), light (darkness and 20 W light) and pH (pH 1-9) stability. Degradation kinetic studies were done on thermally treated samples. Radical scavenging ability was thereafter calculated. Anthocyanidins were identified and quantified...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthocyanins; Degradation kinetics; Folin-Ciocalteu; Hibiscus sabdariffa.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200209

Characterization and study of functional properties of banana starch green variety of Mysore (Musa AAB - Mysore)
Provedor de dados: 116
Autores: FONTES,Sabrina de Medeiros; CAVALCANTI,Mônica Tejo; CANDEIA,Roberlúcia Araújo; ALMEIDA,Eveline Lopes.
Abstract So that there is innovation in the development of food products with starch in its formulation, it can take into account the banana starch, which has higher content when the fruit is fully green. The starches and derivatives are used as ingredients or additives basic components added in small amounts to enhance the production, presentation and preservation of the product. This study aimed to characterize the green banana variety Mysore (Musa AAB - Mysore), studying their functional properties as well as its importance and use in the food industry. The starch extracted from green bananas were performed physico-chemical studies and functional properties. The yield amounted to a starch quality, with characteristics similar to other species of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amylopectin; Amylose; Extraction; Regress; Syneresis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200224

Physicochemical characterization and label comparison among diet yogurts sold in the city of Limoeiro do Norte – CE
Provedor de dados: 116
Autores: PASSOS,Antonia Ariana Camelo; SILVA,Ana Josymara Lira; LOPES,Silmara Azevedo; BRAGA,Renata Chastinet; CAVALCANTE,Antonio Belfort Dantas; PEREIRA,Júlio Otávio Portela.
Abstract This work aimed at analyzing labels (based on the current legislation) and confirm the nutritional information given on the label of five brands of diet yogurt. The physicochemical analyses carried out were: moisture, minerals, proteins, lipids, reducing carbohydrates in lactose, non-reducing carbohydrates in sucrose, total carbohydrates, acidity and pH. All brands of diet yogurt had mandatory nutritional information on their label. As for content, only brands B and C are compliant with the current legal demands. The numbers found in the analyses for protein and carbohydrates were higher than the percentages shown on the labels in all brands. There were no numbers for lipids. Despite the differences found on the labels, all brands of diet yogurt...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermented milk; Lacteous products; Centesimal composition; Labeling.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100131

Effects of CO2 pretreatment on the volatile compounds of dried Chinese jujube (Zizyphus jujuba Miller)
Provedor de dados: 116
Autores: CHEN,Kai; GAO,Lei; LI,Qiong; LI,Huan-Rong; ZHANG,Yanyan.
Abstract The aim of this study was to investigate whether anaerobic metabolites could induce volatile compounds and improve aroma of dried jujube (Ziziphus jujuba Miller). Jujube fruits were incubated in a polyvinyl chloride bag containing 5% CO2 and 95% N2 for up to 168 h at 25 °C and 3 samples were randomly removed every 6 h and oven dried to a moisture content of ≅ 20%. The volatile compounds of control and 5% CO2-pretreated Chinese jujube fruits were extracted by simultaneous distillation extraction and identified by gas chromatography-mass spectrometry(GC-MS). The acetaldehyde and ethanol contents were determined by gas chromatography (GC). The results indicated that a large accumulation of acetaldehyde and ethanol caused changes in aroma composition...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Simultaneous distillation extraction; Anaerobic metabolites; Volatile compounds; Dried jujube; PCA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400578

Deoxynivalenol in wheat and wheat products from a harvest affected by fusarium head blight
Provedor de dados: 116
Autores: MACHADO,Lidiane Viera; MALLMANN,Carlos Augusto; MALLMANN,Adriano Olnei; COELHO,Raquel Durand; COPETTI,Marina Venturini.
Abstract Fusarium head blight is an important disease occurring in wheat, caused mainly by the fungus Fusarium graminearum. In addition to direct damage to crops, reduced quality and yield losses, the infected grains can accumulate mycotoxins (toxic metabolites originating from prior fungal growth), especially deoxynivalenol (DON). Wheat crops harvested in 2014/2015 in southern Brazil were affected by high levels of Fusarium head blight. In this context, the aim of this study was evaluate the mycotoxicological quality of Brazilian wheat grains and wheat products (wheat flour and wheat bran for DON. DON contamination was evaluated in 1,504 wheat and wheat product samples produced in Brazil during 2014. It was determined by high performance liquid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fusarium; Mycotoxins; Fungal diseases; Scab; Fusarium head blight.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100008

Influence of different types of sugars in physalis jellies
Provedor de dados: 116
Autores: CURI,Paula Nogueira; CARVALHO,Cynara dos Santos; SALGADO,Derlyene Lucas; PIO,Rafael; PASQUAL,Moacir; SOUZA,Filipe Bittencourt Machado de; SOUZA,Vanessa Rios de.
Abstract The objective of this study was to evaluate the influence of different types of sugar (white refined sugar, white crystal sugar, demerara sugar, brown sugar and coconut sugar) on the physicochemical characteristics, rheological properties and sensory acceptance of physalis (Physalis L) jelly. In addition, we evaluated the influence of the information on the acceptability of the product. It was found that the type of sugar greatly influences the physicochemical and rheological characteristics of physalis jelly which reflects differences in the product acceptability. Due to higher sensory acceptance, white refined, white crystal and demerara sugars are the most suitable for processing jellies. It was also found that the sugar type information and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physalis peruviana; White sugar; Demerara sugar; Brown sugar; Coconut sugar; Processing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300349

Histamine production by Enterobacter aerogenes in chub mackerel (Scomber japonicus) at various storage temperatures
Provedor de dados: 116
Autores: ZOU,Yu; HOU,Xiyan.
Abstract Growth of Enterobacter aerogenes and accumulation of histamine in chub mackerel (Scomber japonicus) were investigated through measuring bacterial count, histidine decarboxylase (HDC) activity and histamine content in fish samples stored at various temperatures from 4 to 37 °C. Results showed that bacterial count and HDC activity rapidly increased in chub mackerel inoculated with E. aerogenes at storage temperature above 20 °C and reached the highest values (8.64 log CFU/g and 31.68 U/g) at 37 °C. Meanwhile, fish samples stored at 25 and 37 °C for 18 h, formed histamine at above 50 mg/100 g of the potential hazard level. In contrast, bacterial growth and histamine formation were controlled for 36 h by cold storage at low temperature (4 °C)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histamine; Histidine decarboxylase; Enterobacter aerogenes; Chub mackerel.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100076

Effects of warming yang and invigorating qi prescription on renin-angiotensin-aldosterone system in rats with heart failure after myocardial infarction
Provedor de dados: 116
Autores: HAN,Lihua; WANG,Zhentao; WU,Hong; CHAI,Songbo; XING,Guohui; WANG,Hongxing; YUAN,Bin; LI,Zhiwei.
Abstract This study investigated the effects of warming yang and invigorating qi prescription on renin-angiotensin-aldosterone system (RAAS) in rats with heart failure after myocardial infarction. 126 rats were randomly divided into model group, sham operation, warming yang, invigorating qi, warming yang+invigorating qi, digoxin and captopril group for respective treatment. After intervention for 6, 8 and 10 weeks, the left ventricular ejection fraction (LVEF) was calculated, and the plasma renin, angiotensin II and aldosterone levels were measured. Results showed that, after 6, 8 and 10 weeks, LVEF in warming yang, invigorating qi, warming yang+invigorating qi and captopril group was significantly higher than model group (P &lt; 0.05), and the plasma...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Warming yang; Invigorating qi; Heart failure; Renin-angiotensin-aldosterone system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200246

Results from portable and of low cost equipment developed for detection of milk adulterations
Provedor de dados: 116
Autores: NASCIMENTO,Wesley William Gonçalves; SOUZA,Mariane Parma Ferreira de; VALENTE,Ana Carolina Menezes Mendonça; ANJOS,Virgílio de Carvalho dos; FURTADO,Marco Antônio Moreira; BELL,Maria José Valenzuela.
Abstract This work presents the results of a device, MilkTech, developed to detect milk tampering, based on electrical measurements. The device indicates possible frauds by water, sodium chloride, caustic soda, ethyl alcohol and sodium bicarbonate. The advantages in relation to traditional methods are portability, low cost and detection of mixed frauds. The experiments were conducted in dairy plants at Governador Valadares, in Brazil. The results were compared with cryoscopy and chloride tests. It is demonstrated there is high correlation between MilkTech and Cryoscopy. For instance, the detection limit of the equipment for water addition with the set of analyzed data was 0.78% with precision of 1.1%. Adulterations with sodium chloride, caustic soda, ethyl...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Milk; Adulteration; Quality control.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000700038

Influence of different drying techniques on drying parameters of mango
Provedor de dados: 116
Autores: IZLI,Nazmi; IZLI,Gökcen; TASKIN,Onur.
Abstract This research inspected the effects of freeze, microwave (120 and 350 W) and hot air (60, 70 and 80 °C) drying techniques on the color, drying characteristics, antioxidant capacity and total phenolic content of mango slices. Midilli et al., Two-term and Page models which exemplify drying characteristics are superior than alternative models. All of the color values (a, b, L, C, α and ΔE) were altered notably based on the used drying technique and colors nearest to the fresh sample were attained with freeze drying. In comparison to the fresh sample, the dried samples showed a decrease of 18.4-54.6% in antioxidant capacity. The total phenolic content value was notably highest one for the microwave dried sample at 350 W and the lowest one for a hot...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hot air drying; Freeze drying; Microwave drying; Modeling; Quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400604

Characterization of bioactive compounds, antioxidant activity and minerals in landraces of pumpkin (Cucurbita moschata) cultivated in Southern Brazil
Provedor de dados: 116
Autores: PRIORI,Daniela; VALDUGA,Eduardo; VILLELA,Juliana Castelo Branco; MISTURA,Claudete Clarice; VIZZOTTO,Márcia; VALGAS,Ricardo Alexandre; BARBIERI,Rosa Lía.
Abstract The objective of this work was to evaluate the genetic variability for the synthesis of bioactive compounds and minerals in pumpkin (Cucurbita moschata) landraces. Total phenolic compounds, carotenoids, antioxidant activity and minerals were evaluated in 10 accessions of Cucurbita moschata landraces from the Genebank of Embrapa Temperate Agriculture (Pelotas - RS, Brazil). Twenty plants of each accession were cultivated in the field during the spring/summer of 2013/2014. After harvesting of mature fruits, the seeds were discarded and opposite longitudinal portions of the pulp were manually prepared for analysis of the bioactive compounds. For the determination of minerals, pumpkin samples were frozen in plastic bags, and after freeze-dried and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pumpkin; Cucurbitaceae; Ex situ conservation; Genetic resources; Characterization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100033

Assessment of radio frequency heating on composition, microstructure, flowability and rehydration characteristics of milk powder
Provedor de dados: 116
Autores: ZHONG,Yu; WU,Yuwei; ZHENG,Yuanrong; ZHU,He; LIU,Zhenmin; JIAO,Shunshan.
Abstract Radio frequency heating (RFH) provides higher efficiency and more uniform heating zone compared with conventional method. The aim of present work is to evaluate the effect of RFH (at 90 °C for 5 or 10 min) on the changes in composition (protein oxidation and fat distribution), microstructure, flow characteristic and rehydration property of infant milk powder. The results indicate that the concentration of protein dityrosine was slightly enhanced, more free fat appeared on powder surfaces (&gt; 50% increase), and porosity in powder matrix as tested by SEM was increased after RFH treatment. For powder flowability, raw sample had low cohesiveness (specific energy = 4.39 mJ/g), and RFH provided better flowability and decreased compressibility....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Radio frequency heating; Infant milk powder; Microstructure; Powder flowability; Powder rehydration.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400544

Communication in health: a new time
Provedor de dados: 116
Autores: FERREIRA,Carolina Menezes; GIARDELLI,Gil; LIMA,Mike Lopes; KAPIM,Gabriela; GARBIN,Daiana; FISBERG,Mauro; ZAMBRONE,Flávio; CORRÊA,Tadeu; BOULOS,Marcos; POLTRONIERI,Fabiana; PAULON,Clarice Pimentel; SILVA,Gumercindo; ESCOBAR,Ana; MALZYNER,Gabriela; ATALLA,Marcio; NEVES,Bianca; ANTONACCIO,Cynthia; SILVESTRE,Paulo; REIS,Ciro Dias; GRISOLIA,Daisy; CRESCIA,Elena; OTTO,Gustavo.
Abstract The interface between the fields of health and communication brings together a wide diversity of topics, perspectives and articulations between academic production (scientific content) and its dissemination to the public (health journalism). The development and convergence of communication technologies, the progressive mediatization of society and institutions, the new generation of readers and their ways of consuming health content are some of the examples of the various issues addressed in health communication. The aim of this article is to reflect on the relationship between media and health and its current importance in the production and dissemination of contents, in light of the new information and communication technologies, producing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Health; Nutrition; Communication; Information; Communication and health.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300345

Anti-nutritional factors and digestibility of protein in Cayocar brasiliense seeds
Provedor de dados: 116
Autores: SILVESTRINI,Virgínia Campos; GONÇALVES,Daniel Bonoto; GRANJEIRO,Paulo Afonso; SILVA,José Antonio da.
Abstract The Brazilian Cerrado presents a wide variety of natural products, including the Pequi (Caryocar brasiliense). The important factor that determines the dietary and nutritional ideality of protein is degestitibility. This work aims to evaluate the protein digestibility of Pequi seeds and the presence of anti-nutritional factors. The protein Pequi almonds were extracted, toasted and untoasted. Evaluation digestibility was structurally characterized by SDS-PAGE 15%, which can be used to analyze simulated gastric fluid (SFG) and digestion in intestinal fluid (SFI) in the presence of pepsin and trypsin/chymotrypsin. The extract from Pequi almonds showed inhibitory activity and was not detected hemagglutination. The intensity of the bands according to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caryocar brasiliense; Almonds; In vitro digestibility; 2S albumin; Peptidase inhibitor; Lectins.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400632

Oxidative stability of soybean oil added to coffee husk extract (Coffea arabica L.) under accelerated storage conditions
Provedor de dados: 116
Autores: RIBEIRO,Elisa Franco; JORGE,Neuza.
Abstract Several plants have been studied as potential sources of natural antioxidants for use in the food industry, especially polyphenols. The aim of this study was to evaluate the effects of hydroalcoholic extract from coffee husk on the oxidative stability of soybean oil when stored in an oven. Samples were maintained at a temperature of 60 °C and their oxidative stability was evaluated once every 5 days for a period of 20 days through the Rancimat equipament and analysis of peroxide value, conjugated dienes and tocopherols retention. The oxidation rate in terms of mass gain was evaluated once every 24 hours for a period of 24 days. Although the antioxidant TBHQ showed a better efficiency in the inhibition of oxidation, coffee husk extract showed a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vegetable oils; Natural antioxidant; Mass gain; Agro-industrial waste; Tocopherols.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000700005

Effect of Spirulina addition on the physicochemical and structural properties of extruded snacks
Provedor de dados: 116
Autores: LUCAS,Bárbara Franco; MORAIS,Michele Greque de; SANTOS,Thaisa Duarte; COSTA,Jorge Alberto Vieira.
Abstract Nowadays the demand for practical food like snacks increases worldwide, however the nutritional value in most these formulations is reduced. Due to its chemical composition with high protein concentration, the microalga Spirulina has been used on the production of enriched foods. The present study aimed to evaluate the effects of Spirulina sp. LEB 18 addition on snacks formulations and extrusion conditions on the physicochemical and structural properties of snacks. Protein concentration and physical properties such as expansion index, bulk density, hardness, water absorption index, water solubility index and color were determined. The results showed that the addition of Spirulina sp. LEB 18, temperature in the last zone of the extruder and feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extrusion; Microalga; Microstructure; Nutrition; Snack.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000700016

Obtaining anthocyanin-rich extracts from frozen açai (Euterpe oleracea Mart.) pulp using pressurized liquid extraction
Provedor de dados: 116
Autores: ALCÁZAR-ALAY,Sylvia Carolina; CARDENAS-TORO,Fiorella Patricia; OSORIO-TOBÓN,Juan Felipe; BARBERO,Gerardo Fernandez; MEIRELES,María Angela de Almeida.
Abstract Açai is considered a functional food, and in addition to being a source of energy and fiber, it is a valuable source of bioactive compounds such as anthocyanins, minerals and fatty acids. In the present work, antioxidant-rich extracts from açai pulp were obtained using pressurized liquid extraction (PLE). The effects of the independent variables, including solvent type (pure ethanol and ethanol/water (50:50 v/v)), citric acid (0 and 0.3%, w/w), pressure (20 and 80 bar) and temperature (30 and 60 °C) were evaluated using a full factorial design. The extraction was affected primarily by the solvent type and the citric acid percentage. The results indicate that the maximum overall yield (X0) was 64± 9 (%, d.b.) when the process was performed using...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flavonoids; Phenolic compounds; Antioxidant; Biocompounds recovery; Clean technology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500048

Seasonal variability of phenolic compounds and antioxidant activity in prickly pear cladodes of Opuntia and Nopalea genres
Provedor de dados: 116
Autores: ALVES,Francisco Abel Lemos; ANDRADE,Albericio Pereira de; BRUNO,Riselane de Lucena Alcântara; SILVA,Maria Goretti de Vasconcelos; SOUZA,Maria de Fátima Vanderlei de; SANTOS,Djalma Cordeiro dos.
Abstract The prickly pear is a cactaceae that have chemical compounds that act as natural antioxidants. In addition, the prickly pear is a plant widely used in semiarid region as it’s considered very important forage for animal feed, especially in the dry season. The objectives of this research were to characterize the main classes of phytochemicals, determine the phenols content, flavonoids and anthocyanins and evaluate the antioxidant activity of the prickly pear cultivars Opuntia and Nopalea grown in the semiarid region of Pernambuco in two collection periods (dry and rainy). In the work crude ethanol extracts from cladodes of cultivars (IPA-20, Elephant Ear Mexican, F-08, V-19, Small palm, F-21 and IPA-Sertânia) were used. As for the class of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity and nutrition; Cactus pear; Flavonoids; Phenolic acids; Phytochemicals.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400536

Rosemary as natural antioxidant to prevent oxidation in chicken burgers
Provedor de dados: 116
Autores: PEREIRA,Daiane; PINHEIRO,Rafaelly Simionatto; HELDT,Leila Fernanda Serafini; MOURA,Cristiane de; BIANCHIN,Mirelli; ALMEIDA,Jacqueline de Florio; REIS,Amália Soares dos; RIBEIRO,Ingridy Simone; HAMINIUK,Charles Windson Isidoro; CARPES,Solange Teresinha.
Abstract Rosemary (Rosmarinus officinalis) is known for their sensory characteristics and antioxidant properties, mainly due to the presence of several phenolic compounds. The aim of this work, was determine the antioxidant activity and apply the Rosemary lyophilized extract (RLE) in chicken burger, for assess their ability to reduce the lipid oxidation. Total antioxidant capacity and phenolic compounds profile were analyzed by colorimetric tests and liquid chromatography analysis, respectively. Thiobarbituric acid reactive substances assay was used to evaluate the ability of the RLE to prevent lipid peroxidation in chicken burger stored at 4 °C. Three treatments of chicken burgers were prepared (T1 – control, without addition of synthetic antioxidant BHT:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipid oxidation; Antioxidant assays; TBARS; HPLC; Rosmarinus officinalis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500017

Washings and cryoprotectants for the production of Tilapia Surimi
Provedor de dados: 116
Autores: OLIVEIRA,Dayse Lícia de; GRASSI,Thiago Luís Magnani; SANTO,Edson Francisco do Espirito; CAVAZZANA,Jefferson Felipe; MARCOS,Marcelo Tacconi de Siqueira; PONSANO,Elisa Helena Giglio.
Abstract This research aimed at studying the effects of different washing conditions (distilled water x distilled water + NaHCO3 + NaCl) and cryoprotectants (NaCl + saccharose x sorbitol + sodium tripolyphosphate) for the production of tilapia surimi. The experiment used a factorial design 2 x 2 and the variables analyzed were proximate composition, non-nitrogen protein (NNP) removal, texture, color and yield. The protein and moisture contents of the surimi were influenced neither by washings nor by cryoprotectants, while the ash content was higher when NaCl + saccharose were used as the cryoprotectants and the yield was higher when only distilled water was used for the washings. Combining distilled water for the washings and NaCl + saccharose as the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Proteins; Texture; Color.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300432

Proximate analysis, mineral composition, phytochemical contents, antioxidant and antimicrobial activities and GC-MS investigation of various solvent extracts of cactus cladode
Provedor de dados: 116
Autores: BAKARI,Sana; DAOUD,Amal; FELHI,Samir; SMAOUI,Slim; GHARSALLAH,Néji; KADRI,Adel.
Abstract Cladodes Powder Extracts (CPE) are known for their medicinal properties such as being an auxiliary treatment for obesity and gastrointestinal or cardiovascular disorders as well as lowering cholesterol levels. The presented results proved that CPE was found to be a rich source of carbohydrate, ash, moisture and minerals namely Magnesium, Calcium and Zinc which highlighted its good nutritional value. Moreover, the solvent extracts displayed appreciable level of polyphenols, flavonoids and tannins contents compounds which may explain their higher and varied antioxidant and antimicrobial properties. The time-kill assay revealed that the bactericidal concentration required for cladode to kill M. luteus should be less than 3.12 mg/mL (2MIC)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cladode powder; Nutritional composition; Solvent extracts; GC-MS analysis; Antioxidant and antimicrobial activities.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200286

Kinetics of color change of osmotically dehydrated chub mackerel (Scomber japonicus) during storage at different temperatures
Provedor de dados: 116
Autores: CHECMAREV,Gerardo; CASALES,María Rosa; YEANNES,María Isabel.
Abstract The aim of this study was to determine the effect of storage temperature on the kinetics of color change of chub mackerel dehydrated in a ternary solution (water, glycerol and salt) and vacuum packaged in films. The color of processed fish can change because of lipids and protein oxidation during storage. Samples were stored at 7, 25 and 35 °C for seven months and kinetic models of 0, 1 and 2 order were applied to describe the color changes. It was observed that an increase in the storage temperature improved the changes in the CIE color values (L*, a* and b*). First-order reaction had the best statistical parameters for a* at the three temperatures tested. The temperature dependence of parameter a* indicated an Arrhenius relationship and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Color; Chub mackerel; Osmotic dehydration; Storage.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100119

Effects of Dendrobium officinale polysaccharide on adipogenic differentiation of rat bone marrow mesenchymal stem cells
Provedor de dados: 116
Autores: ZHAO,Yinjuan; XU,Lujia; HUA,Yunfen.
Abstract This study investigated the effect of Dendrobium officinale polysaccharide (DOP) on the adipogenic differentiation of rat bone marrow mesenchymal stem cells (BMSCs). DOP was extracted fresh Dendrobium officinale. Rat BMSCs were prepared, and then were treated with 0 (control), 50, 100, 200, 400, 800 μg/mL DOP, respectively. The cell viability was determined by MTT assay. The adipogenic differentiation was quantitatively analyzed by oil red O staining assay. The mRNA expressions of adipogenic differentiation related gene peroxisome proliferator-activated receptor gamma (PPARG), lipoprotein lipase (LPL) and fatty acid binding protein 4 (FABP4) were detected by RT-PCR. Results showed that, DOP with 0-800 μg/mL concentration had no significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrobium officinale; Polysaccharide; Bone marrow mesenchymal stem cells; Adipogenic differentiation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200303

Effect of different periods of pre-slaughter stress on the quality of the Nile tilapia meat
Provedor de dados: 116
Autores: CASTRO,Pedro Luiz de; LEWANDOWSKI,Vanessa; SOUZA,Maria Luiza Rodrigues de; CORADINI,Melina Franco; ALEXANDRE,Alciony Andréia da Cunha; SARY,César; RIBEIRO,Ricardo Pereira.
Abstract The study was carried out with the objective of evaluating the influence of pre-slaughter stress on meat quality of Nile tilapia (O. niloticus) for 10 days of storage in ice. 75 whole fish were used eviscerated, with average weight and length of 825.75 ± 101.59 g and 28.25 ± 0.81 cm, respectively. The treatments consisted of time in which the animals underwent pre-slaughter hypoxia, being 0, 3 and 6 minutes. Rigor mortis and muscle pH were assessed besides the application of the Quality Index Method and analysis of total protein and blood glucose. Rigor mortis did not differ among treatments during the storage period, and after three hours all animals were in rigor stage. The muscle pH values varied widely during the study period, observing higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypoxia; PH; Rigor mortis; Quality index method; Blood parameters.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100052

Fruit sphere microenvironments and berry phenolic content of Cabernet Sauvignon (Vitis vinifera L.) cultivated under rain-shelter systems with coloured plastic film
Provedor de dados: 116
Autores: MENG,Jiang-Fei; SHI,Tian-Ci; YU,Yong; ZUO,Li-Li; FU,Yu-Shi; WANG,Qin; ZHANG,Zhen-Wen.
Abstract Rain-shelter cultivation has been proven an important cultivation method for grape-plantings in continental monsoon climate zones, of which white plastic films are the most common shelter material. However, while this method and material reduces the occurrence of the disease, it can also decrease the grape berry quality. Five colours (including red, yellow, blue, purple, and white) of plastic films were covered above Cabernet Sauvignon (Vitis vinifera L.) grapevine rows before veraison. Rain-shelter cultivation reduced air temperature, wind speed, and total solar radiation and enhanced relative humidity in the fruit sphere of grapevines. For each particular colour plastic film, the irradiance of its corresponding spectrum band in the canopy of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fruit sphere microclimate; Grape quality; Light quality; Plastic films colour; Rain-shelter system.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400585

Effect of baru (Dipteryx alata Vog.) addition on the composition and nutritional quality of cookies
Provedor de dados: 116
Autores: CAETANO,Kelly Aparecida; CEOTTO,Juliana Muselli; RIBEIRO,Ana Paula Badan; MORAIS,Francielli Pires Ribeiro de; FERRARI,Roseli Aparecida; PACHECO,Maria Teresa Bertoldo; CAPITANI,Caroline Dario.
Abstract The use of the defatted baru almond (Dipteryx alata Vog.) prevents the production of waste residues after extraction of its oil (partially defatted baru flour), representing a process of interest from an environmental point of view. The aim of this study was to prepare oat cookies with functional properties, replacing 100% soy oil for baru oil and 30% wheat flour for partially defatted baru flour (baru cookie). Baru cookies presented a higher moisture (7.80%), probably due to the high content of dietary fiber (3.78%), resulting in a lower calorie content (457.46 kcal.100 g–1), compared to traditional oat cookies. Changing the formulation resulted in the enrichment of a number of microelements, including phosphorus (~ 197.90 mg.100 g–1) and iron (~...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Baru; Unsaturated fatty acids; Whole utilization of foods; Food composition; Dietary fibers.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200239

A research on the chemical and microbiological qualities of honeys sold in Istanbul
Provedor de dados: 116
Autores: URAN,Harun; AKSU,Filiz; DÜLGER ALTINER,Dilek.
Abstract Honey, produced by honeybees from nectar in flowers and plants, is an aqueous supersaturated sugar solution, mainly composed of fructose and glucose. The quality and biochemical properties of honey are related to honey maturity, production methods, processing and storage conditions, climatic conditions as well as the nectar source of the honey. In this study, 35 honey samples of different sizes and packaging all of which were sold in Istanbul were examined in terms of some physicochemical and microbiological properties. All samples were floral liquid honey. The physicochemical characterizations were as follows: average moisture (16.31±1.40%), ash (0.30±0.29%), hydroxymethylfurfural (HMF) (8.09±7.63 mg/kg), pH (4.32±0.34), acidity (30±9 meq/kg). In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical quality; HMF; Honey; Microbiological quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500030

Retrogradation of heat-gelatinized rice grain in sealed packaging: investigation of moisture relocation
Provedor de dados: 116
Autores: JUNG,Kyung-jin; LEE,Hyunah; LEE,Sang Hyun; KIM,Jae Cherl.
Abstract The aggregation of water molecules inside heat-gelatinized rice grain due to retrogradation of the grain was investigated by textural change and scanning electron microscopy (SEM) analysis of cooked grains after storage at 11 °C in a sealed package. Relaxation tests using a disc-type tip showed an increase in hardness (strength) of the cooked grain as the degree of retrogradation increased with increasing storage time, measured by the α-amylase–iodine method. SEM analysis of the vacuum-dried cooked rice grain showed a gradual increase in crevices, which further developed into holes at the center of the granule with increasing storage time. The results suggest that the disruption of hydrogen bonds between water and starch molecules is the first...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice grain; Starch; Gelatinization; Retrogradation; Texture; Structure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100097

Comparative study of functional properties of eight walnut (Juglans regia L.) genotypes
Provedor de dados: 116
Autores: CERİT,İnci; SARIÇAM,Ayşe; DEMİRKOL,Omca; ÜNVER,Hülya; SAKAR,Ebru; COŞANSU,Serap.
Abstract Eight walnut (Juglans regia L.) genotypes were assessed for the glutathione (GSH) and total phenolic contents (TPC), as well as their antioxidant capacities. The GSH contents were between 1.1 and 7.2 mg 100 g-1. The TPC contents ranged from 33 to 50.3 mg GAE g-1, while the ferric ion reducing antioxidant power (FRAP) values ranged from 156 to 302 mg FeSO4 g-1. A strong correlation (r2=0.8258) was determined between the FRAP values and the TPC. Cupric ion reducing antioxidant capacity (CUPRAC) values ranged from 13 to 35 mg trolox g-1. The correlation between the CUPRAC values and the GSH contents was weak (r2=0.2069). The walnut extracts (0.2 mg mL-1 concentration) showed 16.2-40% DPPH (2,2-diphenyl-1-picrylhydrazyl) scavenging activity. A strong...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Walnut; Juglans regia L.; Glutathione; Total phenolic compounds; Antioxidant activity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300472

Effect of green banana pulp on physicochemical and sensory properties of probiotic yoghurt
Provedor de dados: 116
Autores: COSTA,Elizabete Lourenço da; ALENCAR,Natália Manzatti Machado; RULLO,Bruna Gabrielle dos Santos; TARALO,Renata Lara.
Abstract In order to investigate the potential of the green banana as a prebiotic, and for its content of resistant starch, fermented yogurts were produced by cultures composed of Lactobacillus delbrueckii, Streptococcus thermophilus, Bifidobacterium bifidum and Lactobacillus acidophilus as well as being enriched with three concentrations of industrialized green banana pulp (GBP) (3%, 5% and 10% w/v). The green banana pulp added to the yogurt stimulated the multiplication of L. acidophilus after the first day of fermentation and B. bifidum after seven days in cold storage compared to the control that consisted of yogurt without the addition of green banana pulp. The dose-response effect was not observed; however, the results show that the green banana pulp...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resistant starch; Probiotic yogurt; Green banana; Bifidobacterium bifidum; Lactobacillus acidophilus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300363

Physical and chemical characteristics of cashew nut flour stored and packaged with different packages
Provedor de dados: 116
Autores: GADANI,Bruna Carolina; MILÉSKI,Kelly Márcia Lazarotto; PEIXOTO,Lucas Silva; AGOSTINI,Juliana da Silva.
Abstract The aim of this study was to evaluate the physical and chemical changes in cashew nut flour under different packaging and storage conditions. The flour samples were characterized according to their chemical composition, packaged in polystyrene trays associated with covering chloride polyvinyl (PVC), plastic pot of polyethylene terephthalate (PET), plastic packaging polyethylene (POL) and without coating polystyrene trays (CON). All packages were stored for 225 days, evaluating every 45 days the moisture content of the flour as well as extracting their oil by the cold method for characterization on the following indexes: acidity, saponification, iodine, peroxide and refraction. There was slight and gradual increase in the moisture content from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deterioration; Rancidity; Anacardium occidentale L.; Oilseed; Oil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400657

A model for implementation of HACCP system for prevention and control of mycotoxins during the production of red dried chili pepper
Provedor de dados: 116
Autores: OZTURKOGLU-BUDAK,Sebnem.
Abstract Hazard analysis and critical control points (HACCP) is a process control system describes the potential hazards during food production flow chart. In contrast to the conventional way of ensuring product safety by end-product testing, HACCP establishes control systems, focuses mainly on preventive measures. Quality of red dried chili pepper (RDCP) should be assured by taking special care from harvesting of the peppers to retailing of the packaged product. RDCP is susceptible to fungi growth and mycotoxin contamination depending on the atmospheric and processing conditions such as humidity, temperature, storage and drying. Mycotoxins, are toxic metabolites to human health and strict control measures are required for preventing their occurrence in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dry chili pepper; HACCP; Aflatoxin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500024

The effect of modified citrus pectin-probiotic on faecal lactobacilli in Balb/c mice
Provedor de dados: 116
Autores: ODUN-AYO,Frederick; MELLEM,John; REDDY,Lalini.
Abstract Intestinal bacteria utilize the constituent of ingested food for their metabolic activities making the gut microbiota a target in the modification of functional foods. This study examines the effect of modified citrus pectin and encapsulated probiotic, Lactobacillus acidophilus ATCC 4356 on colon lactobacilli microbiota in healthy Balb/c mice. Mice were orally administered once daily with modified citrus pectin alginate probiotic, alginate calcium probiotic, modified citrus pectin and water for 28 days. Faecal lactobacilli count were determined using automated colony counter Doc-It® imaging station. The number of faecal lactobacilli in the modified citrus pectin alginate probiotic-treated mice significantly increased at day 7, 14 and 28 [7.99 ±...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modified citrus pectin; Supplements; Lactobacilli; Microbeads.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300478

Acceptance of fish hamburgers in school meals in the Southwest Region of Paraná, Brazil
Provedor de dados: 116
Autores: BREDA,Leandra Schuastz; BELUSSO,Anne Caroline; NOGUEIRA,Barbara Arruda; CAMARGO,Guilherme Holub; MITTERER-DALTOÉ,Marina Leite.
Abstract The regular consumption of fish provides health gains for people, and its introduction in school meals is an important strategy to insert the habit of consuming this food by a population. Thus the objective of this study was to verify the acceptance of fish, presented in the form of hamburger, by children in municipal primary schools in the town of Pato Branco, Brazil, in which the school cooks had been trained to produce fish hamburgers. Acceptance was evaluated using a hedonic scale with 5 facial classifications (1 = disliked extremely to 5 = liked extremely). Students of both genders from 5 to 10 years of age (n = 142) were served the hamburgers for their midday meal, representing the protein portion of the meal. The results were analyzed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Hamburger; School meals; Acceptance; Children.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500094

Antibiotic residues in pasteurized and unpasteurized milk marketed in southwest of Paraná, Brazil
Provedor de dados: 65
Autores: Schlemper,Valfredo; Sachet,Ana Paula.
ABSTRACT: The treatment of dairy cattle with antibiotics may lead to milk contamination by drugs residues, which represents risks to human health. This study aimed to investigate the presence of antibiotic residues in milk, produced and marketed in Capanema microregion, Paraná, Brazil, through the analysis of pasteurized milk samples from different brands consumed by the local population and unpasteurized milk samples provided by a dairy industry. Enzyme immunoassays screening kits SNAPduo™ Beta-Tetra ST Test (Idexx Laboratories) were used, which verified the presence of β-lactam and tetracyclic drugs residues, as well as enzyme immunoassays screening kits Charm ROSA Test (Charm Sciences), which established the presence of quinolones and sulfonamides...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotic; Milk quality; Public health; Food safety; Pasteurization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200451

Adapted Bailenger method improves the rate of Ascaris suum eggs recovery from liquid pig manure compost
Provedor de dados: 65
Autores: Sá,Mariangela Facco de; Gonçalves,Ricardo Aymay; Marder,Cristiana; Baldissera,Matheus Dellamea; Oliveira,Camila Belmonte de; Noll,Jessica Caroline Gomes; Silva,Filipe; Monteiro,Silvia Gonzalez.
ABSTRACT: Liquid pig manure (LPM) is widely used as a compost fertilizer for vegetable crops destined for human consumption. However, these wastes may contain parasites eggs, such as the nematode Ascaris suum, that pose serious health risks to humans. We attempted to determine the most appropriate technique for recovering A. suum eggs from LPM compost. Samples were collected from two waste sources during composting, including 23 samples containing LPM, sawdust, and wood shavings, and 14 samples of LPM alone-both in triplicate. Samples were analyzed using several different recovery methods. Recovery of eggs by the modified Bailenger method with adaptations was significantly more effective and recovered 57% more eggs than by the modified Bailenger method...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helminth eggs; Organic decomposition; Residues; Parasites.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400502

Growth ring analysis of Euxylophora paraensis through x-ray microdensitometry
Provedor de dados: 65
Autores: Andrade,Eva Santos de; Garcia,Silvana dos Santos Carvalho; Albernaz,Ana Luisa Kerti Mangabeira; Tomazello Fillho,Mario; Moutinho,Victor Hugo Pereira.
ABSTRACT: Euxylophora paraensis Huber - Rutaceae, popularly known as yellow heart, is a species with a low-density population that has suffered intense exploitation in recent decades. This has led to its inclusion in the IBAMA list of endangered species. This study aimed to evaluate the existence of growth rings and their annuity in five trees of Euxylophora paraensis through the x-ray microdensitometry technique, as well as to compare them using the classical method. Application feasibility of this technique can be deepened through future, broader dendroecological studies, which may better elucidate the understanding of the species population dynamics and promote more sustainable uses. Wood disks were collected from the base of five 29-year-old trees from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrochronology; Yellow heart; Density; Amazon.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400501

Reproductive potential of Chrysoperla externa maintained in different cage sizes in laboratory conditions
Provedor de dados: 65
Autores: Battel,Ana Paula Magalhães Borges; Moral,Rafael de Andrade; Rodrigues,Camila Alves; Araújo,Márcio da Silva; Godoy,Wesley Augusto Conde.
ABSTRACT: This study investigated the influence of cage sizes on the survival and reproductive potential of Chrysoperla externa (Hagen). Size of breeding cages significantly affected the reproductive potential of C. externa . Our results indicated that in cages smaller (7.5cm of diameter) than those usually recommended for the rearing of this insect (10cm diameter), females showed higher rates of oviposition. Reduction of space for rearing natural enemies in the laboratory is very important for developing biological control programs.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Green lacewing; Mass rearing; Oviposition; Predator.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300152

Estimate of genetic parameters for carcass traits and visual scores inmeat sheep using Bayesian inference via threshold and linear models
Provedor de dados: 65
Autores: Figueiredo Filho,Luiz Antonio Silva; Sarmento,José Lindenberg Rocha; Ó,Alan Oliveira do; Santos,Natanael Pereira da Silva; Sena,Luciano Silva; Sousa Júnior,Antonio de.
ABSTRACT: The aim of this study was to estimate the variance components and genetic parameters for marbling in the ribeye area (MRA) and body condition score (BCS) using Bayesian inference via mixed linear and threshold animal models. Data were obtained from Santa Ines breed sheep reared in the Brazilian Mid-North region. Analyses considering the Monte Carlo methods were performed with Markov chains from 500000 cycles onward. A 200000-cycle initial burn-in was considered with values taken at every 250 cycles, in a total of 1200 samples. The Monte Carlo Error deviations were low for the means heritability in all chains by both linear and threshold models. Additive variances estimated by threshold model were higher than those estimated by the linear model....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gibbs sampling; Categorical data; Marble meat; Ultrasound.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300653

Fertilizer shanks to promote soil decompaction in the seeding operation
Provedor de dados: 65
Autores: Drescher,Marta Sandra; Reinert,Dalvan José; Denardin,José Eloir; Gubiani,Paulo Ivonir; Faganello,Antônio; Silva,Bernardo Rodrigues da; Zardin,Maísa Carina.
ABSTRACT:  Intensification of soil compaction process under no-tillage (NT) is motivating the search for alternatives to mitigate soil compaction state. This study evaluated changes in soil physical and hydraulic properties caused by seeder with fertilizer shanks at different depths compared with the double discs lagged seeder, to investigate the possibility of soil decompaction by sowing under NT in southern Brazil. The study was conducted in a clayed Oxisol, for 27 years under NT. Treatments were three planting mechanisms: S0.10m: cutting disc combined with shank acting to 0.10m depth; S0.15m: cutting disc combined with shank acting to 0.15m depth and, D0.07m: double discs lagged acting to 0.07m depth in an experimental randomized block design with four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil management; Mechanical decompaction; Soil structure recovery.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300252

Customer relationship management in the agricultural machinery market
Provedor de dados: 65
Autores: Nunes,Amanda Letícia Pit; Abi-Saab,Otavio Jorge Grigoli; Ralisch,Ricardo.
ABSTRACT: Customer Relationship Management can be regarded as a business approach. The objective was to know the customers, meet their expectations, and thus build customer loyalty. Although, the agricultural sector makes significant economic contributions to the Brazilian market and induces sharp competition among its companies, a huge opportunity still presents itself for the diffusion and implementation of CRM in the agricultural machinery sector. This study aimed to highlight the importance of customer management, by introducing the customer relationship management (CRM) concept. This is possible in the event of reselling agricultural machines, with the intention of retaining the customers and raising the profitability of these companies. It is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Concessionaire; Customer loyalty; CRM; Marketing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700355

Genetic divergence of soybean genotypes in relation to grain components
Provedor de dados: 65
Autores: Rodrigues,Josiane Isabela da Silva; Arruda,Klever Márcio Antunes; Cruz,Cosme Damião; Barros,Everaldo Gonçalves de; Piovesan,Newton Deniz; Moreira,Maurilio Alves.
ABSTRACT: The objective of this paper was to estimate the genetic divergence among 49 soybean ( Glycine max L. Merrill .) genotypes to assist grain quality-focused breeding programs in the choice of progenitors. The genetic divergence was estimated using the Mahalanobis generalized distance from the percentages of protein, oil, and fatty acids oleic, linoleic and linolenic after cultivation of genotypes in different environments. Genotypes were grouped by agglomerative methods and the two and three-dimensional projections of the distance matrix were obtained. The average protein and oil contents in the four environments ranged from 34.25 to 45.18% and from 16.48 to 23.01%, respectively. The average contents of the fatty acids oleic, linoleic and linolenic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L. Merrill.; Protein; Oil; Fatty acids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200402

Cellulose pulp produced from bulrush fiber
Provedor de dados: 65
Autores: Wille,Vania Karine Dick; Pedrazzi,Cristiane; Colodette,Jorge Luiz; Oliveira,Rubens Chaves de; Coldebella,Rodrigo; Giesbrecht,Bruna Mohr; Saccol,Angelo Fernando de Oliveira.
ABSTRACT: Brazil continues to use wood as the principal raw material source for the pulp industry; although, non-wood fibers have been revealed to be a competent substitute to produce paper with different and exceptional properties. Keeping this in focus, this study aimed to assess potential of Schoenoplectus californicus fibers (C. A. Mey.) Soják, commonly identified as bulrush or reed, in cellulosic pulp generation, as an alternative fiber source for the pulp and paper industry. On analyzing the chemical composition of reed fibers, extractives of lignin, carbohydrates, uronic acids and minerals were reported. Physico-chemical characteristics of reed-based cellulosic pulp were estimated including viscosity, hexenuronic acids, etc., as well as anatomical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Schoenoplectus californicus; Caracterização química; Processo kraft.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500403

Irrigation water consumption modelling of a soilless cucumber crop under specific greenhouse conditions in a humid tropical climate
Provedor de dados: 65
Autores: Salcedo,Galo Alberto; Reca,Juan; Pérez-Sáiz,Mónica; Lao,María Teresa.
ABSTRACT: The irrigation water consumption of a soilless cucumber crop under greenhouse conditions in a humid tropical climate has been evaluated in this paper in order to improve the irrigation water and fertilizers management in these specific conditions. For this purpose, a field experiment was conducted. Two trials were carried out during the years 2011 and 2014 in an experimental farm located in Vinces (Ecuador). In each trial, the complete growing cycle of a cucumber crop grown under a greenhouse was evaluated. Crop development was monitored and a good fit to a sigmoidal Gompertz type growth function was reported. The daily water uptake of the crop was measured and related to the most relevant indoor climate variables. Two different combination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis sativus; Greenhouse; Soilless crops; Water consumption; Tropical climate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200351

Single- and Multispecies Biofilms by Escherichia coli, Staphylococcus aureus, and Salmonella spp. Isolated from Raw Fish and a Fish Processing Unit
Provedor de dados: 65
Autores: Frozi,Jesieli Braz; Esper,Luciana Maria Ramires; Franco,Robson Maia.
ABSTRACT:  The consumption of fish by the Brazilian population is increasing. However, fish and seafood are highly perishable and can be contaminated with several microorganisms. In addition, the possibility of biofilm formation is a greater cause for concern. In this study, biofilm formation was evaluated in single- and multispecies cultures at 25°C for incubation periods of 0, 4, 8, 24, and 48h in stainless steel coupons (size, 1.0×1.0cm) immersed in tryptic soy broth. The characteristics of the formed biofilms after sanitizing by immersing the coupons in 200ppm sodium hypochlorite solution for 10min were also evaluated under the same experimental conditions but with some modifications. Biofilm structure was evaluated using scanning electron microscopy....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella spp.; Escherichia coli; Staphylococcus aureus; Biofilm; Stainless steel; Fish industry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000451

Agromorphological performance of garlic landraces in Piauí, Brazil
Provedor de dados: 65
Autores: Albuquerque,José de Ribamar de Araújo; Monteiro,Hélio Nelson Brito; Bezerra,Antônio Aécio de Carvalho; Humberto Aires Matos Filho,Carlos; Lopes,Ângela Celis de Almeida; Gomes,Regina Lucia Ferreira.
ABSTRACT: In garlic (Allium sativum L.), genotype evaluation facilitates the search for better varieties. The aim of this study was to use morphoagronomic traits to evaluate three garlic landraces, namely, “Cateto Roxo Local”, “Cateto Roxo Mineiro 1” and “Cateto Roxo Mineiro 2”. They were planted on May 1, 2014 and May 23, 2014, in the municipality of Sussuapara, State of Piauí, Brazil. These varieties have similar behavior at the vegetative stage. “Cateto Roxo Local” had the highest average bulb mass, clove number per bulb, and clove mass per bulb. “Cateto Roxo Mineiro 1” and “Cateto Roxo Mineiro 2” had the largest clove diameter per bulb. In Sussuapara - PI, “Cateto Roxo Mineiro 1” and “Cateto Roxo Mineiro 2” are recommended for planting in the beginning...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium sativum; Planting dates; Semi-noble garlic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600204

Cardinal temperatures for planting-emergence phase in gladiolus
Provedor de dados: 65
Autores: Muttoni,Martina; Alberto,Cleber Maus; Bartz,Alex Cristiano; Uhlman,Lilian Osmari; Tartaglia,Vanderley de Lima; Streck,Nereu Augusto.
ABSTRACT: The objective of this study was to determine the cardinal temperatures for the planting-emergence phase of gladiolus. A controlled environment experiment was performed in a growth chamber in the Universidade Federal do Pampa - Campus Itaqui, using the completely randomized experimental design with 12 temperature treatments (5°C, 7°C, 10°C, 13°C, 16°C, 18°C, 20°C, 22°C, 25°C, 30°C, 33°C, 35°C) and ten replicates. Corms of the cultivar ‘Amsterdam’ were planted at a depth of 10cm in 1.7dm3 pots. Every day the date of emergence of the gladiolus plants was observed. Then for each treatment, the emergence rate was calculated as the inverse of the duration of the budding phase, and estimated data were achieved employing the non-linear model of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gladiolus x grandiflorus Hort.; Lower base temperature; Upper base temperature; Optimum temperature; Development.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000201

Activity of the antimicrobial peptide P34 against bovine alphaherpesvirus type 1
Provedor de dados: 65
Autores: Castro,Clarissa Caetano de; Silva,Débora Scopel e; Costa,Géssica Aracéli; Fischer,Geferson; Vargas,Gilberto D’Avila; Brandelli,Adriano; Lima,Marcelo de; Motta,Amanda de Souza da; Hübner,Silvia de Oliveira.
ABSTRACT:  Previous studies have demonstrated the antimicrobial activity of the peptide P34. In this study, the antiviral potential of P34 and the in vitro mechanism of action were investigated against bovine alphaherpesvirus type 1 (BoHV1). P34 exhibited low toxicity, a high selectivity index (22.9) and a percentage of inhibition of up to 100% in MDBK cells. Results from antiviral assays indicated that P34 did not interact with cell receptors, but it was able to inhibit the viral penetration immediately after pre-adsorption. In addition, BoHV1 growth curve in MDBK cells in the presence of P34 revealed a significant reduction in virus titer only 8h post-infection, also suggesting an important role at late stages of the replicative cycle. Virucidal effect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antiviral; Herpesvirus; Peptide.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600451

MicroRNAs in veterinary cardiology
Provedor de dados: 65
Autores: Wolf,Marcela; Muehlbauer,Eloísa; Sousa,Marlos Gonçalves.
ABSTRACT: The use of biomarkers is an important recent development in veterinary medicine. Biomarkers allow non-invasive quantification of substances with diagnostic and prognostic potential in several diseases. The microRNAs are small, non-coding RNAs that regulate gene expression and are expressed in different forms in many diseases. Reduced or over-expression of microRNAs showed to be part of the pathogenesis of some heart diseases in humans and animals. Diagnostic and therapeutic value of measuring microRNAs in veterinary cardiology is increased because abnormal expression can be managed by the use of antagonists (in the case of overexpression) and mimicking (in the case of underexpression). Thus, this literature review aimed to compile scientific...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molecular biology; Genetic; Biomarker; Heart failure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700602

Physicochemical and microbiological characterization and antioxidant capacity of açaí pulps marketed in the states of Minas Gerais and Pará, Brazil
Provedor de dados: 65
Autores: Coutinho,Rosemary Maria Pimentel; Fontes,Edimar Aparecida Filomeno; Vieira,Luciana Marques; Barros,Frederico Augusto Ribeiro de; Carvalho,Antonio Fernandes de; Stringheta,Paulo César.
ABSTRACT: The frozen açaí ( Euterpe oleracea Mart.) pulp market has had acceptable development and presents great market potential due to its high nutritional level and fruit's seasonality. However, due to the lack of standards for all types of fruit, products without uniformity are in the market. This study aimed to evaluate frozen açaí pulp belonging to different trademarks related to chemical, physicochemical, and microbiological characteristics. Regarding the total titratable acidity (TTA) and pH, two trademarks from Pará and two from Minas Gerais were rejected compared with the current legislation. It was observed that K (1,253.6mg 100 g-1), Ca (312mg 100g-1), Mg (178mg 100g-1), and P (145mg 100g-1) were the main minerals reported in the analyzed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euterpe oleracea Mart; Frozen açaí pulp; Sanitary conditions; Antioxidant compound.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100750

ERRATUM: Physiological quality of dual-purpose wheat seeds from plants subjected to artificial defoliation
Provedor de dados: 65
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100951

Chemical fractionation of carbohydrate and protein composition of corn silages fertilized with increasing doses of nitrogen
Provedor de dados: 65
Autores: Neumann,Mikael; Nörnberg,José Laerte; Leão,Guilherme Fernando Mattos; Horst,Egon Henrique; Figueira,Danúbia Nogueira.
ABSTRACT: The use of nitrogen fertilizers in corn crops for silage can improve both production and, theoretically, nutritional quality, especially carbohydrate and protein fractions, thereby optimizing animal production. Thus, the aim of this study was to evaluate the effect of increasing levels of nitrogen fertilization in carbohydrate and protein fractionation on the resulting corn silage (Zea mays L.). Nitrogen fertilization was carried out in the urea form (45-00-00) in V5 stage, at the following doses: T1: 0kg N ha-1; T2: 45kg N ha-1; T3: 90kg N ha-1; and T4: 135kg N ha-1. Crops were harvested at R4 stage and submitted to ensiling in experimental PVC silos. The chemical composition of the resulting silage was evaluated after silo opening. There was no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Starch; Organic acids; C fraction; PH; Solubility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500251

Facial nerve ganglioneuroblastoma in a feline leukemia virus-positive cat
Provedor de dados: 65
Autores: Pereira,Paula Reis; Tagliari,Nelson Junior; Leite-Filho,Ronaldo Viana; Schaefer,Gabriela da Cruz; Costa,Fernanda Vieira Amorim da; Pavarini,Saulo Petinatti.
ABSTRACT: Neuroblastic tumors can originate from the central neuraxis, olfactory epithelium, adrenal medullary region or autonomous system. Ganglioneuroblastoma are a type of neuroblastic tumor, with very few case descriptions in animals. Diagnosis of facial nerve ganglioneuroblastoma was made in a feline leukemia virus-positive 11-month-old cat. The cat had hyporexia, left head tilt, depressed mental state, horizontal nystagmus, inability to retract the pinched left lip, anisocoria, ptosis, and absence of the menace reflex. Gross necropsy showed a mass at the left facial nerve root region. Histological examination of this mass showed neoplastic proliferation of neuroblasts arranged in a cohesive pattern and mature ganglion cells. Ganglion cells were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neuronal neoplasm; Cranial nerve VII; Immunohistochemistry; Feline leukemia virus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500551

Estimating cassava yield in future IPCC climate scenarios for the Rio Grande do Sul State, Brazil
Provedor de dados: 65
Autores: Tironi,Luana Fernandes; Streck,Nereu Augusto; Santos,Amanda Thirza Lima; Freitas,Charles Patrick de Oliveira de; Uhlmann,Lilian Osmari; Oliveira Júnior,Wolnei Castro de; Ferraz,Simone Erotildes Teleginski.
ABSTRACT: The objective of this study was to simulate the yield of two cassava cultivars in two IPCC future climate scenarios, the SRES-A1B (Cmip3) and the RCP4.5 (Cmip5), for the state of Rio Grande do Sul, Brazil. The Simanihot model, with the Thornthwaite and Mather water balance sub-model, and the SRES-A1B (Cmip3 - Third Coupled Model Intercomparison Project) and RCP4.5 (Cmip5 - Fifth Coupled Model Intercomparison Project) scenarios of the Fourth and Fifth IPCC Assessment Report, respectively, was used. Cassava cultivars used in this study were 'Fepagro - RS13' (forrage) and 'Estrangeira' (human consumption). In both cultivars, there was an increase in tuberous roots yield in future climate scenarios. The cultivar for human consumption benefits more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Simanihot; Agricultural modeling; Elevated temperature; Elevated CO2.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200204

Use of metaphylactic protocols based on the risk to develop bovine respiratory diseases in feedlot cattle
Provedor de dados: 65
Autores: Magalhães,Layane Queiroz; Baptista,Anderson Lopes; Fonseca,Pedro de Almeida; Menezes,Guilherme Lobato; Nogueira,Geison Morel; Headley,Selwyn Arlington; Fritzen,Juliana Torres Tomazi; Alfieri,Amauri Alcindo; Saut,João Paulo Elsen.
ABSTRACT: Bovine respiratory diseases (BRD) affect production rates negatively because it compromise health and well-being of the affected animal. The hypothesis of this study was that the use of metaphylactic protocols based on the risk to develop BRD would reduce morbidity and pulmonary lesions. For this purpose, the aims of this study were to evaluate the effect of two metaphylactic protocols on the morbidity of feedlot cattle with a known sanitary history, occurrence of pulmonary lesions at slaughter, and the possible participation of Mannheimia haemolytica, Histophilus somni, Bovine alphaherpesvirus 1 (BoHV-1) and bovine respiratory syncytial virus (BRSV) in the development of BRD. An experimental study was designed in which 3,094 adult, male, cattle,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histophilus somni; Mannheimia haemolytica; Pulmonary lesions.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800454

Forage characters of different Paspalum species in Rio Grande do Sul: a meta-analysis
Provedor de dados: 65
Autores: Graminho,Larissa Arnhold; Dall’Agnol,Miguel; Pötter,Luciana; Lopes,Rodrigo Ramos; Simioni,Carine; Weiler,Roberto Luís.
ABSTRACT: The objective of this study was to evaluate, through meta-analysis, the forage characteristics of various species of the genus Paspalum and to use them to select the best ecotypes that can be used in artificial hybridization as parents and hybrids for pasture production and natural pasture recovery systems. Data were obtained from studies conducted by the Department of Forage Plants and Agrometeorology of the Universidade Federal do Rio Grande do Sul. Database comprised tests conducted with ecotypes and/or hybrids of Paspalum spp. in plots for evaluating total dry mass production, leaf dry mass production, and stem dry mass production by means of cuts. Total dry mass production, which included leaves and stems, differed between the ecotypes and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apomixis; Hybridization; Plant breeding; Natural pasture; Variability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700651

Mammary fibroadenomatoid hyperplasia in a heifer
Provedor de dados: 65
Autores: Silva,Lorena Ferreira; Silva,Luiz Antonio Franco da; Rabelo,Rogério Elias; Silva,Wanessa Patrícia Rodrigues da; Cassali,Geovanni Dantas; Gonçalves,Aline De Biasi Bassani; Sant’Ana,Fabiano José Ferreira de.
ABSTRACT: This manuscript described the anatomopathological and immunohistochemical findings in a rare case of mammary fibroadenomatoid hyperplasia in a 12-month-old Holstein heifer. A yellow, multilobulated, firm 20cm x 9cm x 6.5cm mass affecting the right quarters of the udder was observed. Total mastectomy was performed. Microscopic evaluation revealed severe hyperplasia of the mammary epithelium and numerous well-differentiated and mildly pleomorphic acini. Additionally, moderate proliferation of the fibrous connective tissue and the myoepithelial cells near the proliferating acini was evident. About 50% of the proliferating epithelial cells showed positive nuclear labeling for estrogen and progesterone receptors, and approximately one-third were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mammary hyperplasia; Estrogen; Progesterone; Diseases of cattle.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600552

Commercial cuts of Pantanal caiman meat according to sex
Provedor de dados: 65
Autores: Fernandes,Vitória Regina Takeuchi; Souza,Maria Luiza Rodrigues de; Gasparino,Eliane; Coutinho,Marcos Eduardo; Visentainer,Jesuí Vergílio; Bérgamo,Alessandro Spinola; Goes,Elenice Souza dos Reis.
ABSTRACT: This study evaluated the yield, color, and chemical composition of commercial cuts (tail, sirloin cut, back fillet, and thigh) of Pantanal caiman meat in both sexes. The yield of tail was higher than other cuts, and the yield of females (17.0%) was higher than males (15.9%). The thigh of males had lower protein content (20.8%) compared with other cuts. Females showed a higher lipid content in the tail (2.4%) and thigh (0.8%) compared with males (1.7% and 0.4%, respectively). The tail presented the greatest content of monounsaturated fatty acids (45.2%) and higher n6/n3 ratio (4.6). Although lightness was not different among cuts or between sexes, there were differences in color. Males have more yellowish meat compared with females. Thigh and back...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caiman crocodilus yacare; Yield; Chemical composition; Colorimetry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200931

Standard area diagram set for olive leaf spot assessment
Provedor de dados: 65
Autores: Sachet,Marcos Robson; Danner,Moeses Andrigo; Citadin,Idemir; Pertille,Rafael Henrique; Guerrezi,Marieli Teresinha.
ABSTRACT: The establishment of olive (Olea europaea) orchards in Brazil is increasing due to their economic potential and benefits to human health. However, a number of limiting factors need to be overcome, such as Olive Leaf Spot (OLS) occurrence, for olives to reach their full potential. OLS, which is caused by Fusicladium oleaginum, results in defoliation and a reduction in fruit production. This study aimed to develop a standard area diagram set (SAD) for the assessment of OLS severity under humid subtropical climate conditions. The SAD was developed with six levels of severity (1, 3, 6, 9, 12 and 15%) and OLS severity was validated by eight inexperienced raters. Using the SAD provided an increase in accuracy, precision and concordance, while also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Olea europaea; Olive peacock’s eye; Phytopatometry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600153

Genotypic parameters for egg production in pure breed hens by using random regression model
Provedor de dados: 65
Autores: Ferreira,Priscila Becker; Rorato,Paulo Roberto Nogara; Breda,Fernanda Cristina; Michelotti,Vanessa Tomazetti; Rosa,Alexandre Pires; Macedo,André.
ABSTRACT: This study aimed to test different genotypic and residual covariance matrix structures in random regression models to model the egg production of Barred Plymouth Rock and White Plymouth Rock hens aged between 5 and 12 months. In addition, we estimated broad-sense heritability, and environmental and genotypic correlations. Six random regression models were evaluated, and for each model, 12 genotypic and residual matrix structures were tested. The random regression model with linear intercept and unstructured covariance (UN) for a matrix of random effects and unstructured correlation (UNR) for residual matrix adequately model the egg production curve of hens of the two study breeds. Genotypic correlations ranged from 0.15 (between age of 5 and 12...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Barred Plymouth Rock; Heritability; Laying rate; White Plymouth Rock.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500652

Antimicrobial activity and chemical constituents of essential oils and oleoresins extracted from eight pepper species
Provedor de dados: 65
Autores: Martinelli,Laira; Rosa,Jessica Miranda; Ferreira,Carolina dos Santos Bragine; Nascimento,Gustavo Marcelo da Luz; Freitas,Mateus Silveira; Pizato,Luiz Carlos; Santos,Wanderson de Oliveira; Pires,Ricardo Francisco; Okura,Mônica Hitomi; Malpass,Geoffroy Roger Pointer; Granato,Ana Claudia.
ABSTRACT: Essential oils are the most important compounds produced during secondary metabolism in aromatic plants. Essential oils are volatile, have characteristic odor and are used as defensive agents by plants. In pepper, it is possible to say that essential oils are the “flavor fingerprint” of each species. In the present article, eight species of pepper were studied in order to extract their essential oils and oleoresins, test their antibacterial and antifungal activities and also to identify the compounds present in the most bioactive samples. Results demonstrated that two essential oils [Pimenta dioica (L.) Merr. and Schinus terebinthifolius] and three oleoresins (Schinus terebinthifolius and Piper nigrum white and black) recorded significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peppers; Essential oil; Oleoresins; Antimicrobial activity; GC-MS.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500451

Soil macrofauna in a Cerrado/Caatinga ecotone under different crops in Southwestern Piauí State, Brazil
Provedor de dados: 65
Autores: Santos,Djavan Pinheiro; Schossler,Thiago Rodrigo; Santos,Isis Lima dos; Melo,Nathália Batista; Santos,Glenio Guimarães.
ABSTRACT: The aim of this study was to characterize the soil macrofauna under different crop systems and compare them to the macrofauna under the native vegetation of a Cerrado/Caatinga ecotone in southwestern Piauí State, Brazil. The areas studied included areas under sweetsop cultivation (Annona squamosa L.), andropogon grass with three years of use, andropogon grass with six years of use, pivot-irrigated corn, Napier grass, and native vegetation. In each area, soil layers of 0-0.1, 0.1-0.2, and 0.2-0.3m, including the surface litter, were evaluated following the Tropical Soil Biology and Fertility Program (TSBF) recommendations. The soil macrofauna from the different land-use systems were identified to the family level, and the mean density of each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioindicators; Napier grass; Irrigated crop; Soil invertebrates; Soil quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000404

Molecular variants of Grapevine rupestris stem pitting-associated virus infecting grapevines (Vitis spp.) in Brazil
Provedor de dados: 65
Autores: Fajardo,Thor Vinícius Martins; Kin,Aléxis Cardama; Nickel,Osmar.
ABSTRACT: Grapevine rupestris stem pitting-associated virus (GRSPaV) is one of the most common viruses of grapevine. It is involved in the graft-transmissible disease rupestris stem pitting of the rugose wood complex. The objective of the research was to perform the molecular characterization of the coat protein (CP) gene of sixteen Brazilian GRSPaV isolates aiming to determine the occurrence of molecular variants (strains) of this virus. Nine grapevine samples were evaluated, from which dsRNA was extracted. Nucleotide sequences were generated by Next generation sequencing (NGS). Fifteen complete sequences of the GRSPaV CP gene were obtained and phylogenetically analyzed. Multiple alignments of the sequences showed identities of nucleotides ranging from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: GRSPaV; Foveavirus; Strains; Lineages; Genetic variability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100153

Review on applications of electric vehicles in the countryside
Provedor de dados: 65
Autores: Magalhães,Romilton Oliveira; Assunção,Mateus Vieira da; Santos,João Paulo Mendes; Silva,Emanuel Victor da; Ferreira Júnior,Luiz de Gonzaga; Magalhães,Ricardo Rodrigues; Ferreira,Danton Diego.
ABSTRACT: This paper presents the main applications of electric vehicles in rural areas, pointing out the trends and challenges for the future. Technological conditions and difficulties faced by the industry for a wide dissemination of this technology are discussed. The paper described the main researches with proposals to overcome the problems of implementing electric tractors, as supply and electricity storage. Technical and economic comparisons between conventional internal combustion tractors and electric tractors are also presented and discussed. The paper showed the existence of barriers to the implementation of electric vehicles in rural areas, as well as the need for batteries technological evolution, which have high costs and for that reason they...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electric vehicles; Micro tractors; Electric tractor; Batteries.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700353

High frequency of visceral leishmaniasis in dogs under veterinary clinical care in an intense transmission area in the state of Tocantins, Brazil
Provedor de dados: 65
Autores: Santos,Helcileia Dias; Galvão,Samara Rocha; Dias,Francisca Elda Ferreira; Ribeiro,Taiã Mairon Peixoto; Negreiros Filho,Osmar; Sousa,Sebastiana Adriana Pereira; Minharro,Silvia.
ABSTRACT: A direct search for parasites were used as the diagnostic test to determine the frequency of  Leishmania spp. infection in dogs ( Canis lupus familiaris ) under veterinary clinical care in the city of Araguaína, Tocantins, Brazil. For this approach, lymph node cell samples were collected using needle aspiration from 649 dogs of different breeds and ages. Two hundred and sixty four (40.7%) dogs tested positive for amastigote forms of  Leishmania spp. Furthermore, 202 (76.5%) dogs that tested positive showed some clinical sign of disease, while 62 (28.4%) dogs were asymptomatic. Dogs &lt;2 years old or those that lived alongside poultry species in peri-domicile areas had a greater chance of infection (P&lt;0.05). Our results revealed the importance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Visceral leishmaniasis; Cytodiagnosis; Risk factors; Prevention and control.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300501

Impact of farm size on milk quality in the Brazilian dairy industry according to the seasons of the year
Provedor de dados: 65
Autores: Marcondes,Marcos Inácio; Brandão,Virgínia Lúcia Neves; Ferreira,Gustavo Antônio Torres; Silva,Alex Lopes da.
ABSTRACT: Milk produced in Brazil has been seen as having poor quality and is associated with a large number of small farms. However, there are few studies demonstrating lower quality of milk of small properties. Thus, this study aimed to evaluate the relationship between production scale on dairy farms and milk quality, how it behaviors throughout the year and set goals to improve quality according to each strata. A total of 21,917 analysis of 409 farmers conducted from January 2005 to December 2014 were used. To study the database, the properties were divided according to monthly average daily milk yield: 10 to 100; 100 to 200; 200 to 500; 500 to 1,000; and 1,000 to 5,000L of milk day-1. The data showed that dairy farming is predominantly carried out on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Milk production; Milk quality; Somatic cell count; Total bacterial count.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100451

Fuel consumption efficiency of an agricultural tractor equipped with continuously variable transmission
Provedor de dados: 65
Autores: Farias,Marcelo Silveira de; Schlosser,José Fernando; Linares,Pilar; Barbieri,Juan Paulo; Negri,Giácomo Müller; Oliveira,Luis Fernando Vargas de; Rüdell,Iury Iago Port.
ABSTRACT: The correct choice of modern power transmissions can help farmers decrease production costs. The following research aimed to assess fuel consumption efficiency of an agricultural tractor equipped with continuously variable transmission, at different travel speed and load levels applied on the tractor drawbar. Standard procedure has been applied considering six load levels (30; 40; 50; 60; 70 and 80% of Q0) by means of breaking with a dynamometer car instrumented in a concrete test track, at three travel speeds (5.16; 7.29 and 10.48km h-1). Throughout the experiment, engine speed, traction force and hourly fuel consumption were monitored. The results indicated that there was an average increase of 2.67; 2.82; and 2.61L h-1 in the hourly fuel...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tractor testing; Load levels; CVT transmission; Specific fuel consumption.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600351

Non-pressure compensating emitters using treated sewage effluent for irrigation
Provedor de dados: 65
Autores: Fischer Filho,João Alberto; Dalri,Alexandre Barcellos; Santos,Miquéias Gomes dos; Zanini,José Renato; Faria,Rogério Teixeira de.
ABSTRACT: This study aimed to evaluate the obstruction of non-pressure compensating emitters using treated sewage effluent (TSE) for irrigation. A drip irrigation system with six models of emitters (encoded) was installed in level field conditions. TSE coming from a sewage treatment station was used as irrigation water after being filtered through a disc filter (120 mesh). Seven flow rate evaluations of drippers operating at 100kPa were performed (0, 100, 200, 300, 400, 500 and 600h of operation). The experimental design was randomized in a 6×7 factorial arrangement (6 models and 7 times), with four repetitions, and Tukey’s test was used to compare means. Relative flow rate (Qr), the flow rate coefficient of variation (CVQ) and degree of clogging (GE) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wastewater; Trickle irrigation; Clogging; Water saving.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700351

Estimated live weight of growing Pêga breed donkeys
Provedor de dados: 65
Autores: Moreira,Camilla Garcia; Balieiro,Júlio César de Carvalho; Menezes,Madalena Lima; Ribeiro,Gabriela; Nascimento,Olivia Carmen de Araújo; Brandi,Roberta Ariboni.
ABSTRACT: The equations available in the literature to estimate the body weight (BW) of Pêga breed donkeys were evaluated using 25 animals aged 0-6 months and it was proposed an equation for BW prediction. For the measurement of the thoracic perimeter (TP) and for weighing the animals using the weighing tape, the animals were positioned in a forced station on a steep slope. An electronic scale was used for the determination of the BW. Accuracy of linear and nonlinear equations described in the literature was tested for BW prediction based on the animals’ TP, followed by the comparison of these equations with the equation developed in the present study for BW prediction of Pêga breed donkeys. A difference was noted (P&lt;0.001) between the weights obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Accuracy; Asinine; Equations; Estimation; Growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000651

Potassium nitrate on overcoming dormancy in Brachiaria humidicola ‘BRS Tupi’ seeds
Provedor de dados: 65
Autores: Libório,Cláudia Barrios de; Verzignassi,Jaqueline Rosemeire; Fernandes,Celso Dornelas; Valle,Cacilda Borges do; Lima,Natalia Dias; Monteiro,Lenise Castilho.
ABSTRACT: In this study, the aim was to determine the influence of potassium nitrate, using different concentrations and immersion times on the dormancy of the seeds of Brachiaria humidicola cv. ‘BRS Tupi’. Four experiments were performed adopting a factorial scheme (5x3+1) in different seed lots, for different post-harvest storage durations, during which the seeds were immersed in potassium nitrate solutions of different specific concentrations (0, 0.1, 0.3, 0.5 and 1% KNO3), for three exposure periods (12, 24 and 48h), plus one control (untreated), in a completely randomized design. The characteristics assessed included the imbibition curve, germination, first count and germination rate, as well as viability confirmed by using tetrazolium test. From the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germination; Forage; Chemical treatment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600201

ERRATUM: Ecogeography of Lippia rotundifolia Cham. in Minas Gerais, Brazil
Provedor de dados: 65
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800951

Enteral fluid therapy in neonatal calves and features of commercially available electrolyte solutions in Brazil
Provedor de dados: 65
Autores: Bregadioli,Gabriela de Castro; Pereira,Priscilla Fajardo Valente; Flaiban,Karina Keller Marques da Costa; Ribeiro Filho,José Dantas; Lisbôa,Júlio Augusto Naylor.
ABSTRACT: According to the World Health Organization, the development of orally replacement fluids and electrolytes was one of the most significant advances of the twentieth century, markedly reducing mortality from diarrheal children. In veterinary medicine, oral electrolyte solutions (OES) are routinely used to treat diarrheic neonatal calves in order to correct water, electrolyte and acid base imbalances. In North America, the use of OES is routine and there are at least 20 commercial alternatives. Use of OES has increased in recent years in Brazil, but just five commercial products are currently available. The OES should contain, in suitable concentrations, electrolytes, glucose and an alkalizing agent to ensure its therapeutic efficacy. This review...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electrolyte imbalance; Diarrhea; Oral electrolyte solution; Dehydration; Acid base imbalance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700603

Gender on the growth of Criollo foals from birth to three years of age
Provedor de dados: 65
Autores: Pimentel,Anelise Maria Hammes; Rodrigues,Walvonvitis Baes; Martins,Charles Ferreira; Montanez,Nathanael Ramos; Boligon,Arione Augusti; Souza,João Ricardo Malheiros de.
ABSTRACT: The objective of the present study was to evaluate the effect of gender on the growth of Criollo foals, in order to use this information as a reference for breeding as well as in future research. Body height, thoracic perimeter, and cannon bone perimeter of 75 foals were measured from two farms in Rio Grande do Sul, Brazil (Lat. 32°, 33′, 58″, Long. 53°, 22′, 33″) and from three generations over three years. In both farms, animals were kept under the same range and feeding conditions. Nonlinear regression models were applied to describe the growth curves for the three traits over the experimental period. Cannon bone perimeter was greater in males than in females (P&lt;0.001) but the predicted curves for body height and thoracic perimeter did not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Horses; Growth curve; Foal development; Morphology; Morphometry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100651

Improved grazing activity of dairy heifers in shaded tropical grasslands
Provedor de dados: 65
Autores: Mello,Andréia Cristina Tavares de; Carnevalli,Roberta Aparecida; Shiratsuchi,Luciano Shozo; Pedreira,Bruno Carneiro e; Lopes,Luciano Bastos; Xavier,Diego Batista.
ABSTRACT: Trees in the production systems can effectively reduce hot weather-induced stress in the Brazilian Midwest. High temperatures cause changes in animals daily routine, and trees into pastures can promote benefits. The aim of this research was to evaluate the behavior of dairy heifers in silvopastoral systems in the state of Mato Grosso, Brazil. A herd of 24 crossbreed heifers (3/4 and 7/8 Holstein/Zebu), 350kg average weight, was evaluated over three seasons. Piatã grass was managed under three shade levels: full-sun, moderate-shade, and intensive-shade provided by 10 to 12m high Eucalyptus trees. Behavior data were collected every 15 minutes from 8:30h to 16h. Shade availability significantly impacted heifer behavior, mainly affecting grazing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silvopastoral system; Urochloa brizantha; Stress; Animal behavior.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200652

The application prospects and development trends of orally disintegrating tablets to dogs
Provedor de dados: 65
Autores: Yi,Tingting.
ABSTRACT: Orally disintegrating tablets (ODTs) disintegrate rapidly in the mouth in seconds when placed at the tongue. The introduction of ODTs for dogs can address many needs, ranging from convenient dosing for dogs with dysphagia to extending life cycle of drugs. Now, different technologies are widely combined for developing ODTs. The combination makes ODTs have more properties, obtaining orally disintegrating sustained release tablets or orally disintegrating enteric tablets or enhancing the dissolution rate and bioavailability of poorly water-soluble drugs and so on. The aim of this article is to give a comprehensive prospect to the application of ODTs to dogs, including ideal properties of drugs, indications of ODTs, considerations in developing ODTs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orally disintegrating tablet; Indication; Consideration; Dogs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400602

Drying and pickling on phenols, capsaicinoids, and free radical-scavenging activity in Anaheim and Jalapeño peppers
Provedor de dados: 65
Autores: Blanco-Rios,Ana Karina; Medina-Juarez,Luis Angel; Gamez-Meza,Nohemí.
ABSTRACT: The effects of sun-drying, air-drying and pickling processes on phenol and capsaicinoid contents, and free radical-scavenging activity [2,2-diphenyl-1-picrylhydrazyl (DPPH), and 2,2′-azino-bis 3-ethylbenzthiazoline-6-sulphonic acid (ABTS)] in Anaheim (red) and Jalapeño peppers were evaluated. Sun-drying process in Anaheim pepper caused the highest phenols retention (100%), and the free radical-scavenging activity (100%) when compared with air-drying (80%). Pickling process in Jalapeño pepper caused a moderate reduction on the phenol content (24%) and the radical-scavenging activity by DPPH (35%). Processes studied did not cause variations in the capsaicinoid fractions neither in its radical-scavenging activity. Results suggested that dried and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Dried pepper; Pickled pepper; Jalapeño pepper; Capsaicinoids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900781

Age and tree spacing and their effects on energy properties of Ateleia glazioviana
Provedor de dados: 65
Autores: Eloy,Elder; Silva,Dimas Agostinho da; Caron,Braulio Otomar; Elli,Elvis Felipe; Schwerz,Felipe.
ABSTRACT: The use of wood for energy purposes is common in Brazil, motivated mainly by the diversity of species that present a potential for energy production. The objective of this study was to determine the effects of tree age and spacing on the energy properties of different components of the biomass: wood, bark, and branch of the species Ateleia glazioviana Baill, distributed at different spacings: 2.0 × 1.0m, 2.0 × 1.5m, 3.0 × 1.0m, and 3.0 × 1.5m in the 1st, 3rd, and 5th year after the planting. The experiment was carried out in a randomized complete block design with three replications. The following variables were determined: biomass (BIO), gross calorific power (GCV), basic density (BD), energy productivity (EP), energy density (ED), fixed carbon...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Timbó; Biomass; Gross calorific power; Energy productivity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900154

Evaluation of eugenol toxicity in bioassays with test-organisms
Provedor de dados: 65
Autores: Gueretz,Juliano Santos; Somensi,Cleder Alexandre; Martins,Maurício Laterça; Souza,Antonio Pereira de.
ABSTRACT: Fish in both natural and farming conditions are exposed to stress of capture, handling, transport or treatment that provoke low zootechnical performance. Anesthetics like eugenol obtained from clove oil have been used strategically not only in freshwater but also in marine and estuarine fish in order to reduce the stress. Apart from the eugenol indication as anesthetic and its low toxicity for animals, its environment action is not clear. Bioassays or ecotoxicity tests with indicator organisms are used to evaluate the mode of action of the pollutants in the environment. The aim of this study was to test the acute toxicity of eugenol using the microcrustacean Daphnia magna and the bacterium Aliivibrio fischeri, and also its chronic toxicity for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aliivibrio fischeri; Daphnia magna; Desmodesmus subspicatus; Ecotoxicology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200403

White grubs (Cyclocephala flavipennis) damaging perennial winter pastures in the South Region of Brazil
Provedor de dados: 65
Autores: Duchini,Paulo Gonçalves; Echeverria,Joilson Roda; Américo,Luana Fidelis; Guzatti,Gabriela Cristina; Cherman,Mariana Alejandra; Sbrissia,André Fischer.
ABSTRACT: Cyclocephala flavipennis Arrow, 1914 (Coleoptera: Melolonthidae), popularly known as white grub, is an insect widely disseminated in the South Region of Brazil. Despite the frequent occurrence of this white grub in areas cultivated with winter cereals, it is generally not considered a pest, since it feeds on straw and dead plant material. However, in 2015 and 2016, this insect has been identified as the damage-causing agent in the perennial winter pastures in Lages, Santa Catarina, Brazil. Damage was observed in patches and caused reduction in root depth and mass, resulting in loss of vigor, accelerated senescence in aerial parts, and death of tillers in Festuca arundinacea Schreb. and Dactylis glomerata L. plants.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Damage; Dynastinae; Grass; Pest; Santa Catarina.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500153

Multisystemic eosinophilic epitheliotropic disease in a horse in Brazil
Provedor de dados: 65
Autores: Laisse,Cláudio João Mourão; Nascimento,Lismara Castro do; Panziera,Welden; Soares,Elizabeth Caldas; Fernandes,Denise Bicca; Westphalen,Júlio César; Sonne,Luciana; Pavarini,Saulo Petinatti; Driemeier,David.
ABSTRACT: Equine multisystemic eosinophilic epitheliotropic disease (MEED) is a rare disease, characterized by eosinophilia and eosinophilic infiltration of several organs. A 5-year-old horse presented pruritus, areas of alopecia, and moderate eosinophilia. The horse was treated with corticosteroids and antibiotics without substantial improvement; and after the disease progressed to fever, diarrhea, gastric reflux and progressive weight loss. Due to poor prognosis the horse was euthanized. Necropsy revealed poor body condition, multiple to coalescing foci of alopecia, with epidermal ulcerations and crusts on the head and distal parts of the limbs. The proximal duodenum was enlarged, with 3 intraluminal nodules. Histopathological evaluation revealed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eosinophilia; Eosinophilic granuloma; Histopathology; Horse.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500552

Arbuscular mycorrhizal fungi and colonization stimulant in cotton and maize
Provedor de dados: 65
Autores: Salgado,Fabrício Henrique Moreira; Moreira,Fátima Maria de Sousa; Siqueira,José Oswaldo; Barbosa,Ricardo Henrique; Paulino,Helder Barbosa; Carneiro,Marco Aurélio Carbone.
ABSTRACT: The objective of this study was to evaluate the effects of inoculation with different arbuscular mycorrhizal fungi native to Cerrado, associated with the application of colonization stimulant (7-hydroxy, 4’-methoxy-isoflavone) at the initial growth of cotton and maize plants in a greenhouse. The experiment was carried out in a completely randomized design and 7x2 factorial scheme, with five species of arbuscular mycorrhizal fungi and combined inoculation (uniting all species in equal proportion) and native fungi, in the presence and absence of colonization stimulant in maize and cotton crops. Shoots dry matter (SDM), roots dry matter (RDM), mycorrhizal colonization and accumulation of calcium, zinc and phosphorus in the SDM were evaluated at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea may; Gossypium hirsutum L; Formononetin; Mycorrhiza.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600202

Classification of the coefficient of variation to variables in beef cattle experiments
Provedor de dados: 65
Autores: Vaz,Marcos André Braz; Pacheco,Paulo Santana; Seidel,Enio Júnior; Ansuj,Angela Pellegrin.
ABSTRACT: This research was conducted to propose a classification of the coefficient of variation (CV%) in many categories of variables of production and carcass of beef cattle experiments. The data was collected from theses and dissertations. We used the methods of classification considering mean and standard deviation, and considering median and pseudo-sigma. The two methods showed similar results so both can be used to classify CV%. We propose only three categories to rank CV%: low, medium and high.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal science; Animal experimentation; Variability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100651

Electrochemotherapy treatment of oral extramedullary plasmacytoma of the tongue: a retrospective study of three dogs
Provedor de dados: 65
Autores: Cunha,Rúbia Monteiro de Castro; Lavalle,Gleidice Eunice; Caires,Carla Emanuela Tertuliano; Araújo,Roberto Baracat de.
ABSTRACT: Extramedullary plasmacytomas (EPs) are responsible for 2.5% of neoplasms in dogs. They are solitary, smooth, elevated, pink or red nodules, of 1 to 2cm in diameter. Cutaneous and oral extramedullary plasmacytomas in dogs are usually benign tumors, treated with local therapies. Prognosis is generally good. Recurrence and metastatic rates are low. Electrochemotherapy is a local treatment that combines chemotherapy and electroporation and shows objective responses of 70% to 94% with few local and systemic side effects. This scientific communication has the objective to report treatment of three canine patients with oral extramedullary plasmacytoma. Nodules were located on the tongue and patients were submitted to one or two electrochemotherapy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cancer; Electrochemotherapy; Dog; Plasmacytoma; Lingual.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200552

Risk of water surplus in soybean crop on haplic planosol soil in the Central Depression of Rio Grande do Sul State, Brazil
Provedor de dados: 65
Autores: Bortoluzzi,Mateus Possebon; Heldwein,Arno Bernardo; Trentin,Roberto; Lucas,Dionéia Daiane Pitol; Righi,Evandro Zanini; Leonardi,Mateus.
ABSTRACT: The aim of this study was to identify soybean sowing dates on which there was low water surplus risk. The crop was raised on a Haplic Planosol soil in the Central Depression of Rio Grande do Sul, Brazil. Soybean development simulations and daily water balances were calculated for different sowing dates from August 1968 to July 2012. Water surplus data was subjected to BoxPlot analyses and Scott-Knott tests at a 5% error probability. Exponential, gamma, lognormal, normal and Weibull functions were tested and the best fits to the data were obtained for both subperiods and total cycle. The highest number of fits for the development cycle and subperiods were obtained using the gamma and weibull functions, respectively. For sowing carried out after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Water balance; Numerical analysis; Probability distribution function.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200205

Enteral electrolyte solutions with different osmolarities administered in a continuous flow in newborn calves
Provedor de dados: 65
Autores: Ribeiro Filho,José Dantas; Dantas,Waleska de Melo Ferreira; Lima,Antônio de Pádua; Viana,Rinaldo Batista; Silva,Micheline Ozana da; Ermita,Pedro Ancelmo Nunes; Silva,Gláucia Matos Marques da; Ribeiro,Bruna Maria; Costa,Caio Monteiro; Monteiro,Lorena Chaves.
ABSTRACT: This study compared the effects of enteral electrolyte solutions with different osmolarities in Holstein cattle. Eighteen newborn calves were evenly divided into three groups and administered the following treatments: hypotonic electrolyte solution (ESHYPO) containing 4g NaCl, 0.5g KCl, 1g sodium acetate, and 7.5g dextrose diluted in 1,000mL water; isotonic electrolyte solution (ESISO) containing 5g NaCl, 1g KCl, 2g sodium acetate, and 10g dextrose diluted in 1,000mL water; and hypertonic electrolyte solution (ESHYPER) containing 6g NaCl, 1g KCl, 3g sodium acetate, and 15g dextrose diluted in 1,000mL water. Solutions were administered at a rate of 15mL kg-1hr-1 for 12 hours in a continuous flow. All three solutions increased the concentration of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fluid therapy; Calf; Hypotonic solution; Nasogastric tube.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500605

Ecogeography of Lippia rotundifolia Cham. in Minas Gerais, Brazil
Provedor de dados: 65
Autores: Meira,Messulan Rodrigues; Martins,Ernane Ronie; Resende,Luciane Vilela.
ABSTRACT:  Lippia rotundifolia is a specie native to the Brazilian Cerrado, endemic to the Cadeia do Espinhaço mountain range. Due to the limited information about the species, the present study aimed to characterize the ecogeography, climate conditions and physical and chemical characteristics of the soil of Lippia rotundifolia in the state of Minas Gerais, Brazil. Thirteen sites were ecogeographically characterized: Parque Estadual Veredas do Peruaçu; Gigante; Rio do Peixe; AEP of Olhos D’água; Joaquim Felício; Parque Estadual do Rio Preto; São Gonçalo do Rio das Pedras; Rio Tigre; RPPN Brumas do Espinhaço; Lapinha; Poço Bonito; Abóboras; and Parque Estadual de Serra Nova. Environments belonged to Cerrado and Caatinga biomes, specifically in rocky and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic resources; Characterization; Ecogeography; Lippia rotundifolia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800403

Genetic parameters for egg production in meat quails through partial periods
Provedor de dados: 65
Autores: Ribeiro,Jeferson Corrêa; Silva,Luciano Pinheiro da; Soares,Aline Camporez Crispim; Caetano,Giovani da Costa; Leite,Carla Daniela Suguimoto; Bonafé,Cristina Moreira; Sousa,Mariele Freitas; Torres,Robledo de Almeida.
ABSTRACT: We estimated genetic and phenotypic parameters for egg production in meat-type quails aiming to propose an optimal age for selection through partial record egg production. Data of 3,503 female quails from two strains (namely, UFV1, with 1,811 and UFV2 with 1,692 females) were used. Egg production was assessed by the number of eggs recorded after 42 days of age and each partial period consisted on 35 days of egg production forward. Covariance components were estimated by using single and bivariate animal model, comprising each partial period of egg production and full egg production period (one year of egg laying). Regarding strain UFV1, heritability estimates ranges from 0.03 to 0.16, and for strain UFV2 0.20 to 0.25. The highest genetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix; Genetic correlation; Genetic evaluation; Heritability; Variance components.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400653

Seroepidemiology ofLeishmaniaspp. in equids from Uberlândia, Minas Gerais, Brazil
Provedor de dados: 65
Autores: Oliveira,Patrícia Magalhães de; Garcia,Felipe; Evers,Fernanda; Barbosa,Vinícius de Morais; Obando,Diego Camilo Mora; Nasciutti,Nayara Resende; Garcia,João Luis; Nogueira,Geison Morel; Headley,Selwyn Arlington; Saut,João Paulo Elsen.
ABSTRACT: This study evaluated the occurrence of Leishmania spp. in equids from Uberlândia, Minas Gerais, Southeastern Brazil. Serum samples from 257 healthy equids of Uberlândia were assessed for the presence of antibodies against Leishmania spp. by using the indirect fluorescent-antibody test. Additionally, an epidemiological survey was done to evaluate the possible risk factors (species of equids, age, gender, economic activity, and contact with domestic and wild animals) associated with the presence of antibodies against Leishmania spp. The total seroprevalence against Leishmania spp. was 24.1% (62/257); representing seroprevalence levels of 22.7% (55/242) in horses, 50% (4/8) in mules, and 42.9% (3/7) in ponies from all regions evaluated. The species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equids; Serology; Epidemiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500501

Serosurvey of Rickettsia spp. in small mammals from Mato Grosso do Sul state, Brazil
Provedor de dados: 65
Autores: Binder,Lina de Campos; Krawczak,Felipe da Silva; Sponchiado,Jonas; Melo,Geruza Leal; Moraes-Filho,Jonas; Bastos,Fernanda Aparecida Nieri; Cáceres,Nilton Carlos; Labruna,Marcelo Bahia.
ABSTRACT: This study aimed to evaluate exposure of wild small mammals to spotted fever group (SFG) rickettsiae in Mato Grosso do Sul State, central-western Brazil. Serum samples of 68 small mammals were analyzed by indirect immunofluorescence assay (IFA) against six Rickettsia species from Brazil. Overall, 37.5% (9/24) marsupials and 6.8% (3/44) small rodents were seroreactive to at least one of the Rickettsia species, with end point titres ranging from 64 to 512. These results suggested that wild small mammals were infected by SFG rickettsiae, and could participate in the ecology of rickettsiae in Mato Grosso do Sul, Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marsupial; Mato Grosso do Sul; Rodent Brazilian spotted fever; IFA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100453

ERRATUM: Review on applications of electric ehicles in the countryside
Provedor de dados: 65
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700950

Financial indicators to evaluate the economic performance of feedlot steers with different slaughter weights
Provedor de dados: 65
Autores: Fabricio,Edom de Avila; Pacheco,Paulo Santana; Vaz,Fabiano Nunes; Lemes,Daniel Batista; Camera,Angelina; Machado,Gabriella Ibarra Ocaña.
ABSTRACT: The objective of this study was to evaluate various financial indicators, estimated deterministically (considering historical quotes twelve consecutive years - 2003 to 2014), on the economic feasibility of finishing steers commercialized with different weights, using the simulation technique. Performance data steers were simulated with average initial weight of 350kg, fed in feedlot and slaughtered with 410, 440, 470, 500, 530, 560 and 590kg. The feeding period varies from 46 to 185 days, respectively. Based in various economic indicators, the viability of the investment decreased linearly according to the increase in slaughter weight. The coefficient of simple linear regression and means from lowest to highest slaughter weight were,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Economic analysis; Beef cattle; Investment projects; Intensive systems; Microeconomics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300931

Morphological development of larvae and juveniles of  Prochilodus argenteus
Provedor de dados: 65
Autores: Guimarães,Irũ Menezes; Dias Filho,Vinícius Augusto; Silva,Ana Helena Gomes da; Santos,Rafael Silva; Severi,William.
ABSTRACT:  Prochilodus argenteus is an endemic fish species from the São Francisco River basin that is of high economic and environmental importance. The present study aimed to contribute with information to the taxonomic identification of  larvae and juveniles of this species. Larvae , obtained from induced spawning of wild animals, were reared in ponds. Individuals were collected daily and classified into larval stages or juvenile phase. Morphological descriptions and morphometric measurements were performed, together with a piece wise linear regression analysis of the body proportions throughout the development process. Individuals in the preflexion stage had a standard length (SL) of 4.48 to 6.64mm, long to moderate body (BH/SL), small to moderate head...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Curimatã; Early development; Morphometry; São Francisco River.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400402

Perception of performance and importance to consumers agro-industry of family companies in the northern region of Rio Grande do Sul state
Provedor de dados: 65
Autores: Breitenbach,Raquel; Bündchen,Andréa; Brandão,Janaína Balk; Caires,Leonardo Marques.
ABSTRACT: The aim of this study was to identify the strategic direction of agroprocessing enterprises and the level of compliance with consumer requirements, as well as the position of agro-industry enterprises in relation to their primary competitors. To this end, a survey was performed, which included nine family agro-industry enterprises from the Northern region of Rio Grande do Sul (RS) and their respective buyers. For this research, the Importance-Performance Matrix methodology described by SLACK (2002) was used. The strategy of the analyzed agro-industry enterprises relies on differentiation, presenting most of the items studied in accordance with consumers’ demands. Consequently, they are not at a disadvantage to their competitors in most criteria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agro-industries family; Importance-performance matrix; Competitiveness; Strategic orientation; Strategic positioning; Northern Rio Grande do Sul.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500931

Prepartum progestagen supplementation in swine: a strategy to facilitate piglet care and prevent early parturition
Provedor de dados: 65
Autores: Haas,Cristina Sangoi; Santos,Monike Quirino dos; Rovani,Monique Tomazele; Santos,Joabel Tonellotto dos; Mellagi,Ana Paula Gonçalves; Bortolozzo,Fernando Pandolfo; Gasperin,Bernardo Garziera; Gonçalves,Paulo Bayard Dias.
ABSTRACT: Gestation length in swine has a considerable amplitude and both early and delayed parturition are common. This variation increases the occurrence of unassisted farrowing and could lead to a wide-ranging age at weaning for piglets born from one batch. Supervision of sow parturition is crucial to reduce mortality of neonate piglets. To facilitate assistance, induction of farrowing using prostaglandin F2α (PGF) has been widely used in batch farrowing systems, whereby synchronization would concentrate the time of farrowing, allowing for better organization of employees. However, a viable alternative method that can be implemented to manage farrowing is to sustain high progestagen levels in the final days of gestation and, consequently, prevent early...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Farrowing induction; Intravaginal device; Progestagen; Early parturiton.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100652

Cherry tomato yield in greenhouses with different plastic covers
Provedor de dados: 65
Autores: Holcman,Ester; Sentelhas,Paulo Cesar; Mello,Simone da Costa.
ABSTRACT: The objective of the present study was to evaluate the influence of different plastic covers on microclimate and cherry tomato yield in greenhouses. The experiments were carried out in Piracicaba, state of São Paulo (Brazil), during three growing periods (2008/2009/2010). A greenhouse was divided in: Environment I (EI) - covered with plastic film anti-UV and thermo-reflective shading screen, and Environment II (EII) - covered with diffusive plastic film; monitored with automatic weather sensors; and cultivated with cherry tomato (‘Sweet Grape’ and ‘Sweet Million’). Use of diffusive plastic in greenhouses provides a better inside distribution of solar energy without causing major changes in air temperature and relative humidity, resulting in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ‘Sweet Grape’; ‘Sweet Million’; Diffusive plastic; Solar radiation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000204

Replacement of raw soybean with roasted soybean increased milk production in Holstein cows
Provedor de dados: 65
Autores: Dias Júnior,Gilson Sebastião; Silveira,Vítor Augusto; Ascari,Ivan Júnior; Pereira,Renata Apocalypse Nogueira; Danés,Marina de Arruda Camargo; Pereira,Marcos Neves.
ABSTRACT: The aim of this study was to evaluate the effect of total replacement of raw whole soybean (RAW) for roastedwhole soybean (ROS) on the production performance of Holstein cows. Two experiments were carried out usinga simple reversal design where RAW has been completely replaced by ROS. In experiment 1, 22 cows (175±60 days in milk)were used, and the dietary inclusion level of RAW or ROS was 3.7% of dry matter (DM). In experiment 2, 16 cows (130±50 days in milk)were used, and thedietary inclusion level of RAW or ROS was 11% of DM. In both experiments, ROS increased milk production by 1.1kgday-1 without changing fat and protein production. Dry matter intake or milk urea nitrogenwere not affected by dietary soy source. In experiment 2, plasma glucose...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Non-degradable protein; Roasting; Milk production.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500651

A qualitative and quantitative analysis of Turkish forest policy documents in the rural development scope
Provedor de dados: 65
Autores: Erol,Seçil Yurdakul; Yıldırım,Hasan Tezcan.
ABSTRACT: The interaction between forest resources and forest villagers has made rural development a privileged component of Turkish forest policy. In this context the main aim of the study was to investigate the framing of rural development issues in national forest policy by using content analysis method. The economic aspect is the most prominent dimension regarding rural development in the context of national forest policy, environmental and socio-cultural factors follow it respectively. Also, the main approach depends on supporting the forest villagers and its development is seen as an essential tool to protect the forest resources.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest policy; Rural development; Content analysis; Forest villagers.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600301

Renal injury in female dogs with pyometra
Provedor de dados: 65
Autores: Figueiredo,Mariana da Silva; Malm,Christina; Mamão,Leonardo Dias; Oliveira,Juliana de; Veado,Júlio César Cambraia; Costa,Mariana Pádua; Valente,Pâmela Cristina Lopes Gurgel; Horta,Rodrigo dos Santos; Castro,Marina Lopes; Castro,Aline Gomes de; Sbaraini,Leila; Souza,Eliana Matias de.
ABSTRACT: Pyometra is a common disease in intact female dogs and can cause glomerulopathy and tubular injury. This study aimed to evaluate kidney injury in female dogs with pyometra, as well as progression of the injury during treatment and the markers of this condition. This study analyzed 20 intact female dogs with both clinical and sonographic diagnosis of pyometra. Dogs were treated with intravenous fluids and antibiotics, and an ovariohysterectomy was performed. The following parameters were assessed at eight separate time points: blood pressure; serum creatinine, phosphorus, and urea levels; urinalysis and urinary biochemical parameters [urinary gamma-glutamyl transferase (uGGT) and urinary protein-to-creatinine ratio (UPCR)]; glomerular filtration...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kidney disease; Kidney function; Urinary GGT; Urinary protein-to-creatinine ratio; Glomerular filtration rate.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500603

Multifunctional Robot at low cost for small farms
Provedor de dados: 65
Autores: Batista,Alan Vinícius de Araújo; Albiero,Daniel; Viana,Thales Vinícius de Araújo; Monteiro,Leonardo de Almeida; Chioderoli,Carlos Alessandro; Sousa,Icaro Rafael Soares de; Azevedo,Benito Moreira.
ABSTRACT: In this study was developed a three-dimensional robotic device, equipped with a system of actuators, sensors, and controllers to do the individual irrigation of plants in low-cost greenhouses for family farming. After the development were carried out the data collection in the field. In the data analyzing, reported that there was no statistical difference between means for manual irrigation and robotics in the development of agronomic variables of stem height, stem diameter and number of leaves, concluding that the robotic irrigation promoted a lower coefficient of variation and a lower standard deviation in the samples.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural robotics; Water irrigation; Cartesian robot.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700354

Industrial processing of canned beans
Provedor de dados: 65
Autores: Schoeninger,Vanderleia; Coelho,Silvia Renata Machado; Bassinello,Priscila Zaczuk.
ABSTRACT: Beans are popular as a protein-filled legume of high nutritional value, being one of the most planted species in the world. However, recent years have seen a decrease in the consumption of beans, owing to the time necessary to cook it domestically. Thus, it is being replaced in people’s diets by other foods. An alternative preparation that supplies modern consumers’ demands is industrially processed beans. This article aimed to provide a literature review on the processing of canned beans. Few recent studies have been performed in Brazil on this subject, as most studies have focused instead on the technological quality of dry bean grains processing. In this article industrial processing concepts and features, production unit operations, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris L.; Canning; Hydration; Blanching.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500780

Chemical composition and fatty acid profile in meat from grazing lamb diets supplemented with ryegrass hay, fishmeal and soya bean meal as PUFA sources
Provedor de dados: 65
Autores: Romero-Bernal,Jose; Almaraz,Ernesto Morales; Ortega,Octavio Alonso Castelán; Salas,Nazario Pescador; González-Ronquillo,Manuel.
ABSTRACT: This study examined the characteristics of the fatty acids profile in the meat of lambs fed grazing and supplemented with different PUFA sources. Thirty Suffolk lambs were used (37.2±5.4kg BW), grazing on perennial ryegrass (Lolium perenne) (12h d-1) and supplemented (30g kg-1 BW0.75) with ryegrass hay (RGH), or supplements formulated with fishmeal (FHM) or soybean meal (SBM). Lambs were used in a completely randomized design. Results showed an effect on total SFA, with SBM higher than RGH (P=0.033), and SBM and FHM showing higher MUFA content compared with RGH (P=0.001). Total PUFA content was higher for RGH, followed by FHM and with the lowest content for SBM (P=0.001). Concluding that there is a variation in fatty acid content depending on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lambs; Grazing; Fatty acids; Meat; PUFA.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400655

Farmer field school’s training on knowledge level of citrus growers regarding improved production practices
Provedor de dados: 65
Autores: Victor,Akash Nougha; Luqman,Muhammad; Shiwei,Xu; Wen,Yu; Majeed,Muhammad Zeeshan.
ABSTRACT: The major objective of this paper was to assess the impact of the Farmer field school (FFS) training program on the knowledge level of farmers (citrus growers) regarding improved citrus production practices. Distract Sargodha was the targeted research area for this study being the leading producer of citrus in Pakistan. Quantitative data were collected through interview schedule and analyzed through Statistical Package for Social Sciences (SPSS). It was conclude that young people were more tend towards getting training under FFS program than old age farmers. Educated farmers were in majority in FFS farmers while; conversely illiterate farmers were in majority in the category of non-FFs farmers. In category of FFS farmers livestock farming was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Farmer field school; Agricultural extension; Integrated pest management; Citrus production practices.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000931

Cuttings of post fire epicormic shoots of Ilex paraguariensis and Cabralea canjerana adult plants
Provedor de dados: 65
Autores: Bisognin,Dilson Antônio; Lencina,Kelen Haygert; Kielse,Paula; Fleig,Frederico Dimas; Silveira,Ronilda; Gimenes,Eliseo Salvatierra.
ABSTRACT: The aim of this research was to evaluate the feasibility of rescuing adult plants by cuttings from post-fire epicormic shoots. We evaluated the native tree species erva mate ( Ilex paraguariensis St. Hil.) and canjerana ( Cabralea canjerana Vell. Mart.), which present difficult seedling production and are economically and ecologically important. The plant material used for the preparation of cuttings consisted of shoots from bud differentiation of tissue from the stem collar of the trees. One-bud cuttings of erva mate were treated with 4000 or 8000mg L-1 of indolebutiric acid (IBA) and the checks were not treated with auxins. The cuttings were grown in three different substrates: carbonized rice husks, vermiculite and coarse sand. The experiment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vegetative propagation; Revigoration; Indolebutiric acid; Substrate; Plantlet production.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300405

Infestation of the banana root borer among different banana plant genotypes
Provedor de dados: 65
Autores: Oliveira,Fernando Teixeira de; Neves,Pedro Manuel Oliveira Janeiro; Bortolotto,Orcial Ceolin.
ABSTRACT: In this study, we aimed to investigate Cosmopolites sordidus (Coleoptera:  Dryophthoridae ) infestation among different banana genotypes in a commercial banana orchard over the course of 30 months. Banana root borer infestation was compared in 20 banana genotypes, including five varieties and 15 hybrids. Overall, we observed that 94.17% of pest infestation cases occurred in the cortex region, and only 5.83% occurred in the central cylinder. Genotypes least sensitive to infestation were the Prata Anã (AAB) and Pacovan (AAB) varieties, where no damage was recorded. Among the hybrid genotypes, PV 9401 and BRS Fhia 18 showed intermediate levels of sensitivity, while BRS Tropical hybrids (AAAB), PA 9401 (AAAB), BRS Vitoria (AAAB), YB 4203 (AAAB), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp.; Banana pests; Varietal resistance; Banana hybrids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100151

Corneal endothelial cell density and morphology in rabbits’ eyes using contact specular microscopy
Provedor de dados: 65
Autores: Brambatti,Gustavo; Albuquerque,Luciane de; Vargas,Eduarda Valim Borges de; Neumann,Carolina Fonseca; Pigatto,João Antonio Tadeu.
ABSTRACT: The goal of this study was to describe the normal values of corneal endothelial cell density and hexagonality in healthy rabbits’ eyes using contact specular microscopy. Both eyes of 18 rabbits, males and females, of different ages were evaluated. The eyes were divided into three groups of 12 each according to the age range of the animals: G1 (6 months old), G2 (12 months old), and G3 (48 months old). Parameters studied included mean endothelial cell density and hexagonality. For Group I, the mean cell density was 2307 cells per mm2. For GII, the mean cell density was 1895 cells per mm2. For G III, the mean cell density was 1818 cells per mm2. Cell density decreased significantly with aging (P&lt;0.001) among the three groups. Pleomorphism in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lagomorphs; Corneal endothelial hexagonality; Specular microscope.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200602

Síntese e caracterização de nanopartículas de ouro conjugadas com curcumina e seus efeitos na osteoartrite experimental induzida
Provedor de dados: 65
Autores: Campos,Wilma Neres da Silva; Leite,Ana Elisa Tognoli; Sonego,Dábila Araújo; Andrade,Mateus Annicchino de; Pizzinatto,Fábio Dumit; Marangoni,Valéria Spolon; Zucolotto,Valtencir; Nakazato,Luciano; Colodel,Edson Moleta; Souza,Roberto Lopes de.
RESUMO: A Osteoartrite (OA) é uma denominação clínica para uma combinação de condições patológicas que envolvem a degeneração progressiva da cartilagem articular e remodelação de osso subcondral. A curcumina, um potente agente anti-inflamatório, têm sido extensivamente estudada, no entanto não oferece boa biodisponibilidade sistêmica. Nanopartículas de ouro (AuNPs) apresentam aplicações potenciais na administração de substâncias terapêuticas aumentando a eficiência do transporte de fármacos. O objetivo deste estudo foi realizar a síntese e caracterização de um sistema conjugando as AuNPs à curcumina e avaliar seu potencial terapêutico em um modelo experimental de OA em camundongos por desestabilização do menisco medial (DMM). As AuNPs foram conjugadas com...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Camundongos; Curcumina; Nanofármacos; Nanoterapia; Osteoartrite.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700607

Systemic and neurotoxic effects of epidural meloxicam in rabbits
Provedor de dados: 65
Autores: Felipe,Gracineide da Costa; Henrique,Fernanda Vieira; Rego,Renato Otaviano do; Alves,Alane Pereira; Oliveira,Kalyne Danielly Silva de; Firmino,Millena de Oliveira; Medeiros,Lylian Karlla Gomes de; Silva,Gustavo de Assis; Batista,Luanna Figueirêdo; Dantas,Antônio Flávio Medeiros; Souza,Bonifácio Benicio de; Nóbrega Neto,Pedro Isidro da.
ABSTRACT: The aim of this study was to assess systemic and neurotoxic changes following an epidural administration of meloxicamin to rabbits. Twelve adult rabbits four males and eight females; average mass, 1.9 ± 0.1kg were randomly divided into two groups: a control group (GC), which received a single dose of 0.9% NaCl epidurally in a volume of 0.3mL kg-1and a meloxicam group (GM), which received 0.2mg kg-1 meloxicam epidurally along with 0.9% NaCl in a total volume of 0.3mL kg-1. Heart rate, respiratory rate, body temperature, and neurological abnormalities were assessed prior to administration of anesthesia (H0), 1, 2, 3, 6, 12, and 24h following epidural puncture (H1, H2, H3, H6, H12, and H24, respectively), and every 24h afterward for 10 days after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anti-inflammatory; Leporids; Spinal cord; Neurotoxicity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500602

Cryopreservation of testicular tissue: an alternative to maintain the reproductive capacity in different animal species
Provedor de dados: 65
Autores: Lima,David Baruc Cruvinel; Silva,Lúcia Daniel Machado da.
ABSTRACT: Cryopreservation of testicular tissue enables the maintenance of reproductive capacity in different animal species, and contributes to the formation of gene banks for endangered species. The spermatogonia present in the testes can be grown in vitro and the sperm obtained can be used in artificial breeding programs. This review aimed to describe the main techniques of testicular cryopreservation, the main cryoprotectants used, as well as the progress made in different animal species thus far. In the last decade, significant progress has been made in obtaining viable and functional germ cells from testicular tissue. However, more research is needed to better establish protocols that can be used in clinical practice with various species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Testicle; Conservation; Cryoprotectants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100701

Germinative potential of encrusted seed of tropical forage species
Provedor de dados: 65
Autores: Souza,José Rafael de; Lacerda,Janderson de Jesus; Morais,Otoniel Magalhães; Silva,Johon Porto.
ABSTRACT: Brazil is the largest producer, consumer and exporter of seeds of forage species, thus the adoption of new technologies for expansion and maintenance of this market is of great importance. The aim of this work was to evaluate encrustation effect on germination potential in seeds of Brachiaria sp. species. The experiment was carried out in Biofabrica laboratory from June to August 2014, in Universidade Estadual do Sudoeste da Bahia, Vitória da Conquista-BA. The experimental design was completely randomized, in a factorial scheme 6x2, with two treatments (with and without coating) and four replications. For germination quality of seeds were evaluated germination and vigor (emergence, emergence speed index, total length of seedling, shoot and root)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coating; Brachiaria sp.; Physiological quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200202

Methicillin-resistant Staphylococcus spp. isolated from curd cheese “requeijão” and “especialidade láctea type requeijão” sold in Brazil
Provedor de dados: 65
Autores: Hachiya,Jamile de Oliveira; Rossi,Gabriel Augusto Marques; Ribeiro,Laryssa Freitas; Sato,Rafael Akira; Silva,Higor Oliveira; Vidal,Ana Maria Centola; Amaral,Luiz Augusto do.
ABSTRACT: This study focused on counting Staphylococcus spp. in curd cheeses “requeijão” and “especialidade láctea type requeijão” sold in Brazil, assessing the presence of mecA gene in obtained isolates and establishing antimicrobial resistance profile of the mecA gene positive isolates. To this, a set of 200 samples of these dairy products were evaluated. Low counts of Staphylococcus spp. were observed in these dairy products. All the isolates were determined as coagulase-negative strains using coagulase test and PCR. However, two isolates (3.70%) were carriers of mecA gene and they can be considered as risk for public health. These isolates presented resistance to penicillin, oxacillin and erythromycin. In conclusion, low counts of Staphylococcus were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial resistance; Cheese; Food safety; MRS; Staphylococcus spp.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700451

Chemical attributes of a remineralized Oxisol
Provedor de dados: 65
Autores: Silva,Rafael Cipriano da; Cury,Marina Elias; Ieda,João José Cardinali; Sermarini,Renata Alcarde; Azevedo,Antonio Carlos de.
ABSTRACT: Remineralizers are comminuted rocks that are applied to soil, and their use as an agricultural amendment was regulated in Brazil in 2013. However, mechanisms of action of these materials must be better known to enable them to be best used in agricultural fields. Soil chemical attributes of an Oxisol were monitored after the application of a diabase remineralizer. The increase in exchangeable Na observed was associated with the dissolution of the border of the plagioclase crystals where this element is highly concentrated (albite). Therefore, it was inferred that the time since the application of the remineralizer (1 to 2 years depending on the treatment) was not sufficient to exhaust this crystal volume. Unfortunately, the presence of several...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rock powder; Mineral dissolution; Cation exchange capacity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100251

Genetic trends for mature body weight, visual scores, and growth traits in Nellore cattle
Provedor de dados: 65
Autores: Koetz Júnior,Celso; Roso,Vanerlei Mozaquatro; Claus,Luís Afonso Marques; Oliveira,Rui Paulo Lopes de; Fávaro,Patrícia da Cruz; Borges,Marcelo Henrique Favaro; Barcellos,Júlio Otavio Jardim; Ribeiro,Edson Luís de Azambuja.
ABSTRACT: Mature weight (MW) of cows is related to the costs of their production. Usually, cows with moderate MW are more efficient in challenging environments, such as those available in the production systems in Brazil. In the present study, the selection index comprises the following traits: conformation, finishing precocity, musculature at weaning (WC, WP, WM) yearling (YC, YP and YM), scrotal circumference at yearling (SC), days to gain 160kg from birth to weaning (D160) and 240kg after weaning (D240). This are related to birth weight gain at weaning (WG) and from weaning to yearling (YG). The mature (MW) and birth weight (BW) traits were not considered in the selection index. The aim of this study was to estimate the values for the genetic trends...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Productive traits; Selection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300652

Rabies outbreak in buffaloes in Rio Grande do Sul, Brazil
Provedor de dados: 65
Autores: Bianchi,Ronaldo Michel; Panziera,Welden; Galiza,Glauco José Nogueira de; Kommers,Glaucia Denise; Fighera,Rafael Almeida.
ABSTRACT: This report aimed to describe the clinical, epidemiological and pathological aspects of an outbreak of rabies in buffaloes in Rio Grande do Sul (RS), Brazil. Seven out of 41 buffaloes from the same farm became fatally ill; they showed the clinical signs of ataxia, ascending paresis, and paralysis of the limbs. During necropsy, marked hyperemia of the leptomeningeal vessels, and severe distention of the urinary bladder were noted. Histologically, there were indications of nonsuppurative meningoencephalitis and ganglioneuritis with intracytoplasmic and eosinophilic inclusion bodies in the neurons. The fluorescent antibody test was positive for rabies. Viral antigens were also detected by immunohistochemistry (IHC) in sections of the cerebellum....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Buffaloes; Rabies virus; Brazil; Immunohistochemistry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400551

Flask sealing on in vitro seed germination and morphogenesis of two types of ornamental pepper explants
Provedor de dados: 65
Autores: Batista,Diego Silva; Dias,Leonardo Lucas Carnevalli; Rêgo,Mailson Monteiro do; Saldanha,Cleber Witt; Otoni,Wagner Campos.
ABSTRACT: The influence of flask sealing and explant source on the in vitro morphogenesis of pepper, were evaluated in Capsicum annuum. Seeds were sterilized and inoculated in Murashige and Skoog media supplemented with vitamins, myo-inositol, sucrose, and agar. Gas exchange was evaluated in the germination stage by comparing 3 flask-sealing systems: rigid polypropylene lids (PLs) without vents, PLs with 1 vent, and PLs with 2 vents covered with membranes. In the regeneration stage, cotyledon and hypocotyl segments were transferred to the organogenesis-inducing media, being the different sealing types also tested in a factorial scheme. Photosynthetic pigments, morphological and hystological analyses were conducted for each treatment. Plants maintained in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Micropropagation; Gas exchange; Ornamental plant; Capsicum annuum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300402

Infection of silkworm larvae by the entomopathogenic fungus Metarhizium anisopliae
Provedor de dados: 65
Autores: Ribeiro,Lucineia de Fátima Chasko; Tavares,Jeronimo; Silva,Sóstenez Alexandre Vessaro; Alvez,Luis Francisco Angeli; Loth,Eduardo Alexandre; Brancalhão,Rose Meire Costa.
ABSTRACT: The isolate E9 of Metarhizium anisopliae was used in commercial hybrids of Bombyx mori larvae to evaluate its biological effect. Symptomatological analyses showed typical signs of fungal infection. Histopathology revealed the presence of large numbers of hemocytes in the hemocoel, and on the sixth dpi the bodies of the insects appeared to be colonised by the fungus. The isolate E9 is pathogenic to larvae B. mori and; therefore, death of the insects was caused by the colonization of fungus in the epidermal and mesodermal tissues.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bombyx mori; Histopathology; Metarhizium anisopliae; Fungal infection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400151

Prototheca zopfii genotype 2 disseminated infection in a dog with neurological signs
Provedor de dados: 65
Autores: Sonne,Luciana; Oliveira,Eduardo Conceição de; Argenta,Fernando Froner; Monteggia,Rafael Souza; Ferreiro,Laerte; Rösler,Uwe; Kershaw,Olivia; Driemeier,David.
ABSTRACT: Prototheca zopfii is an alga that can cause disease in animals and humans. Here, we reported a case of systemic protothecosis in a 2-year-old female Boxer. The animal exhibited tetraparesis and vertical nystagmus. It died two weeks after the onset of clinical signs and was necropsied. At gross examination, whitish areas were identified in the heart. Oval or round structures were observed by microscopic examination, some of which formed morula-like structures compatible with algae in the heart, skeletal muscle, and brain. Growth of Prototheca sp. was observed in the heart after culture at 37°C on Sabouraud agar medium with chloramphenicol. Immunohistochemical analysis of the heart and brain using an anti-Prototheca zopfii polyclonal antibody...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Disseminated protothecosis; Prototheca zopfii genotype 2.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800551

Substrate composition and indolebutyric acid on the propagation of Eplingiella fruticosa from cuttings
Provedor de dados: 65
Autores: Silva,Anderson de Carvalho; Oliveira,Lenaldo Muniz de; Silva,Aritana Alves da.
ABSTRACT: Eplingiella fruticosa (Salzm. ex Benth.) Harley &amp; J.F.B. Pastore, also known as â€œalecrim de vaqueiroâ€ or â€œcowboy rosemaryâ€, is a woody, perennial, and aromatic shrub that growsin the states of northeast Brazil, with the exception of Alagoas, MaranhÃ£o, and PiauÃ­. The plant is widely used in this region and has analgesic, vasodilator, anti-inflammatory, and larvicidal properties.The objective of this study was to evaluate the effect of different substrates and indolebutyric acid (IBA) on cuttings of E. fruticosa for identifying effective practices for the vegetative propagation of this species. Apical cuttings with a standardized length of 10cm and two pairs of leaves were harvested from mother plants in the vegetative stage. Two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lamiaceae; Vegetative propagation; Medicinal plants; Hyptis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200201

Hydrogen peroxide and chlorine dioxide against parasite Ichthyophthirius multifiliis (Protozoa, Ciliophora) in jundiá fingerlings
Provedor de dados: 65
Autores: Marchiori,Natalia da Costa; Silva,Fabiano Muller; Martins,Maurício Laterça; Amaral Junior,Hilton; Silva,Bruno Corrêa da.
ABSTRACT: Ichthyophthiriasis is a worldwide fish disease with great financial impact on freshwater fish farming due to its associated high mortality rates. Current study assesses the parasiticidal capacity of hydrogen peroxide (H2O2) and chlorine dioxide (ClO2) against the causative agent, Ichthyophthirius multifiliis, in jundiá. Median lethal concentration (LC50, 96h) of each chemical agent was established, as well as the minimum inhibitory concentration of hydrogen peroxide for the parasite´s infectious larval phase (theront). Products were tested asynchronously in parasitized fingerlings for short and long baths at the following concentrations and exposure times: 1. Hydrogen peroxide: (T1) continuous bath - 30ppm and (T2) 50ppm; (T3) short bath -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: “ich”; Parasite; Rhamdia quelen drug; Treatment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200501

Genetic parameters of resistance to Meloidogyne incognita in melon
Provedor de dados: 65
Autores: Candido,Willame dos Santos; Castoldi,Renata; Santos,Lucas da Silva; Tobar-Tosse,Dora Enith; Soares,Pedro Luiz Martins; Braz,Leila Trevisan.
ABSTRACT: In order to assess the genetic control of resistance in the melon ‘Gaúcho Redondo’ to the root-knot nematode Meloidogyne incognita, an experiment was conducted in a randomized complete block design with three blocks and six treatments using the parental lines ‘Gaúcho Redondo’ (P1 resistant) and JAB 20 (P2 susceptible), as well as F1, F2, and backcross generations (RC1P1 and RC1P2). Seventy days after inoculation, individual plants were evaluated for resistance using the nematode reproduction factor (RF). The hypothesis of monogenic inheritance was rejected by the chi-square test (χ2), and results indicated that resistance is controlled by more than one gene locus, as confirmed by the quantitative analysis that revealed the presence of six genes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo; Genetic inheritance; Plant breeding; Reproduction factor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500201

Net energy levels on the lipid profile of pork
Provedor de dados: 65
Autores: Alencar,Stephan Alexander da Silva; Kiefer,Charles; Nascimento,Karina Márcia Ribeiro de Souza; Viana,Luiz Henrique; Gonçalves,Liliane Maria Piano; Rocha,Gabriel Cipriano; Corassa,Anderson; Santos,Alexandre Pereira dos.
ABSTRACT: This study was conducted to evaluate the effects of net energy levels on the lipid profile of adipose tissue and muscle of swines. A total of 90 animals, with initial weight of 71.94±4.43kg, were used, and distributed in a randomized block design in five net energy levels (2,300, 2,425, 2,550, 2,675, and 2,800Kcal kg-1 feed), with nine replicates and two animals per experimental unit. Lipid profiles of adipose tissue and muscle were analyzed using gas chromatography. Increasing the levels of net energy using soybean oil, improved the lipid profile of adipose tissue and muscle, increased linearly (P&lt;0.05) the concentrations of polyunsaturated fatty acids, especially linoleic and α-linolenic acid, reduced linearly (P&lt;0.05) the monounsaturated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atherogenic index; Fatty acids; Omega 3; Omega 6; Thrombogenic index.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000652

Multiple response optimization of blueberry juice depectinization
Provedor de dados: 65
Autores: Castagnini,Juan Manuel; Zapata,Luz Marina; Quinteros,Carlos Fabio; Noceti,Alicia.
ABSTRACT: To obtain blueberry juice with a high content of antioxidants it is necessary to introduce an enzymatic depectinization step into the process. Due to the importance of this step in the final properties of blueberry juice it is critical that the operation conditions be optimized. The aim of this research was to evaluate the effects of temperature, duration of treatment and enzymatic complex concentration on anthocyanin content and juice yield during enzymatic depectinization. Results indicated that the best factor combination was 50ºC during 1.3h and 4mg 100g-1 of LAFASE(r) CLARIFICATION and 8mg 100g-1 of LAFASE(r) HE GRAND CRU enzymatic complex concentration. Under these conditions, blueberry juice with 798.41±8.03mg of cyanidin-3-glucoside L-1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blueberry juice; Enzymatic depectinization; Multiple response optimization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400752

Genetic transformation of the Brazilian BR 451 maize variety by the Agrobacterium tumefaciens method
Provedor de dados: 65
Autores: Silva,Marilia Rodrigues de; Didoné,Dielli Aparecida; Ceccon,Cássia Canzi; Almeida,Vinícius de Oliveira; Grando,Magali Ferrari.
ABSTRACT: The asexually gene introduction by genetic engineering has brought enormous possibilities to innovate plant breeding. However, principally because of the low in vitro response, genetic transformation has been restricted to only certain genotypes of agronomically significant species. With the objective of establishing a protocol for genetically transforming the Brazilian BR 451 maize variety through Agrobacterium tumefaciens, it was studied the capacity of plant regeneration in vitro from embryogenic calli cultivated in three regeneration media, each having different growth regulators. It was also evaluated the temperature stress effect on the transformation of the immature embryos with A. tumefaciens EHA 101 containing the plasmid pTF102 with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro regeneration; Temperature stress; EHA 101; PTF102; Zea mays.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100151

Thermal sum of potato plants and tuber sprouting
Provedor de dados: 65
Autores: Bisognin,Dilson Antônio; Müller,Douglas Renato; Streck,Nereu Augusto; Gnocato,Francisco Saccol.
ABSTRACT: This study aimed to determine the thermal sum of the different stages of development of potato plants to better understand its relationship with tuber sprouting. The potato clones SMIJ461-1, SMINIA793101-3 and SMINIA97145-2 and the cultivar Macaca were evaluated in spring and autumn crop seasons in Santa Maria and Julio de Castilhos, RS. Emergence (EM), tuber initiation (TI) and onset of senescence (OS) of the plants were determined and the accumulated thermal sum (aTS) was calculated in each phase. After harvesting, tubers were stored at 20oC for 15 days for curing and then stored at 10 or 20°C to quantify the percentage of sprouted tubers and the number of sprouts per tuber at 0, 30, 60 and 90 days of storage. The experiment was a factorial of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum L; Day-degree; Physiological age.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000203

Diversity of ticks in the wildlife screening center of São Paulo city, Brazil
Provedor de dados: 65
Autores: Martins,Thiago Fernandes; Milanelo,Liliane; Krawczak,Felipe da Silva; Furuya,Haroldo Ryoiti; Fitorra,Lilian Sayuri; Dores,Fábio Toledo das; Pedro,Valéria da Silva; Hippolito,Alicia Giollo; Labruna,Marcelo Bahia.
ABSTRACT: The Wildlife Screening Center (CETAS) of the Tietê Ecological Park (PET), situated at the municipality of São Paulo, receives, treats and rehabilitates wild animals that have been dislodged from their natural environment due to different reasons. This study analyzed the ixodid fauna, and the rickettsial infection in these ticks, collected on wild animals received at the PET’s CETAS. During the period from March 2003 to November 2016, 936 ticks were collected from 96 wild animals (16 bird and 18 mammal species) that were sent to CETAS. The following 12 ixodid species were identified: Amblyomma aureolatum, Amblyomma brasiliense, Amblyomma calcaratum, Amblyomma dubitatum, Amblyomma longirostre, Amblyomma ovale, Amblyomma parkeri, Amblyomma sculptum,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amblyomma; Ixodes; Haemaphysalis; Rhipicephalus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500502

Pseudomonas spp. and P. fluorescens: population in refrigerated raw milk
Provedor de dados: 65
Autores: Almeida,Kelly Molin de; Bruzaroski,Samera Rafaela; Zanol,Daniel; Melo,Marcela de; Santos,Joice Sifuentes dos; Alegro,Lina Casale Aragon; Botaro,Bruno Garcia; Santana,Elsa Helena Walter de.
ABSTRACT: Raw milk samples were collected from cooling tanks (after they cooled for 48 h) in five dairy farms and the corresponding bulk tank (bulk milk transportation, BMT) when they arrived to the industry. Routine physical chemical analyzes and quantification of psychrotrophic ( Pseudomonas spp. and P. fluorescens ) and aerobic mesophilic (AM) populations were performed. Only relative density and titratable acidity values for samples of milk from three farms were in agreement to the quality parameters required by law. In the BMT, only the protein content has not reached the minimum value established by law, and counting was performed for AM (&gt;105 colony forming units (CFU) mL-1) and psychrotrophic bacteria (2.8x106CFU mL-1).  Pseudomonas spp....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Psychrotrophic; Quality; Enzymes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100451

Plant morphology and herbage accumulation of signal grass with or without fertilization, under different light regimes
Provedor de dados: 65
Autores: Lopes,Clenardo Macedo; Paciullo,Domingos Sávio Campos; Araújo,Saulo Alberto do Carmo; Morenz,Mirton José Frota; Gomide,Carlos Augusto de Miranda; Maurício,Rogério Martins; Braz,Thiago Gomes dos Santos.
ABSTRACT: The silvopastoral system has been suggested as an alternative to recover degraded pastures in tropical regions. However, trees reduce the light available for pastures, which may affect the growth and herbage accumulation. The objective of this study was to evaluate the morphogenesis, canopy structure and herbage accumulation of signalgrass ( Brachiaria decumbens ) subjected to three light regimes (0, 20 and 70% of natural shading) and two fertilization levels (presence or absence of nitrogen, phosphorus and potassium). Leaf and stem elongation rates increased under shading but did not vary with fertilization. The leaf appearance rate was greater under fertilizer treatment but was generally similar among light regimes. The tiller density was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria decumbens; Morphogenesis; Shading; Silvopastoral system; Tiller density.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200403

Effectiveness of selection, parent-offspring correlation and regression in bacterial blight resistance genes introgressed rice segregating population
Provedor de dados: 65
Autores: Govintharaj,Ponnaiah; Tannidi,Shalini; Swaminathan,Manonmani; Sabariappan,Robin.
ABSTRACT: The effectiveness of early generation selection was practiced in bacterial blight resistance genes introgressed F2 and F2:3 population of the cross CB 174 R × IRBB 60 in rice. F2 Selection have been proved to be robust and effective tool in crop improvement program. Selection differential was positive for all studied traits. Selection response was high for number of grains, thus indicating the effectiveness of selection for these character. Realized heritability was found high for number of grains and thousand grain weight, suggested that direct selection was effective. Expected selection response and predicted genetic gain was high for number of grains. Parent-offspring correlation showed low but significance association for number of productive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Selection response; Realized heritability; Selection differential.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900151

Vegetative rescue and ex vitro system production of Tibouchina sellowiana clonal plants by cutting and mini-cutting
Provedor de dados: 65
Autores: Fragoso,Rosimeri de Oliveira; Stuepp,Carlos André; Sá,Francielen Paola de; Kratz,Dagma; Zuffellato-Ribas,Katia Christina; Wendling,Ivar.
ABSTRACT: We aimed to evaluate the rooting potential of Tibouchina sellowiana through the experiments: I - Cuttings from current-year shoots and epicormic shoots were submitted to IBA concentrations: 0, 500, 1000, 1500 and 2000mg L-1, in a factorial arrangement 2 x 5 (two types of cuttings x five IBA concentrations), with four replicates and 20 cuttings each; II - mini-stumps of Tibouchina sellowiana were submitted to successive shoots collecting during the four seasons, in a split-plot design, with five replications of ten mini-stumps per experimental unit. From the shoots of mini-stumps, mini-cuttings were produced, which were initially kept in greenhouse and later transferred to full sun, in a 4 x 5 factorial arrangement (four seasons x five collections...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auxin; Clonal mini-garden; Ornamental species; Rejuvenation; Vegetative propagation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100402

Performance of an agricultural engine using mineral diesel and ethanol fuels
Provedor de dados: 65
Autores: Farias,Marcelo Silveira de; Schlosser,José Fernando; Russini,Alexandre; Frantz,Ulisses Giacomini; Estrada,Javier Solis.
ABSTRACT: The global demand for alternatives for mineral diesel oil is growing due to the need for satisfying sustainability and environmental requirements, forcing industries and research institutions to develop new alternative fuels. The objective of this study was to evaluate the performance parameters of an agricultural engine using two different fuels: mineral diesel oil and ethanol. The experiment was conducted on a dynamometric stand using two engines for agricultural use but with a modified fuel injection system, suitable for both diesel and ethanol, in the speed range 1200-2300rpm. The performance of the engines was analyzed considering the power take-off from the tractors for each fuel, as established in the standard NBR ISO 1585. The data...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative fuels; Diesel cycle; Agricultural tractor; Brake dynamometer.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300851

Methods of analysis and number of replicates for trials with large numbers of soybean genotypes
Provedor de dados: 65
Autores: Matei,Gilvani; Benin,Giovani; Storck,Lindolfo; Milioli,Anderson Simionato; Bozi,Antonio Henrique; Dalló,Samuel Cristian; Lucion,Ricardo Antonio.
ABSTRACT: The aim of this study was to evaluate the experimental precision of different methods of statistical analysis for trials with large numbers of soybean genotypes, and their relationship with the number of replicates. Soybean yield data (nine trials; 324 genotypes; 46 cultivars; 278 lines; agricultural harvest of 2014/15) were used. Two of these trials were performed at the same location, side by side, forming a trial with six replicates. Each trial was analyzed by the randomized complete block, triple lattice design, and use of the Papadakis method. The selective accuracy, least significant difference, and Fasoulas differentiation index were estimated, and model assumptions were tested. The resampling method was used to study the influence of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Resampling; Experimental precision; Experimental design; Selective accuracy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400202

Essential oils in the control of dry bubble disease in white button mushroom
Provedor de dados: 65
Autores: Santos,Tamara Leite dos; Belan,Leônidas Leoni; Zied,Diego Cunha; Dias,Eustáquio Souza; Alves,Eduardo.
ABSTRACT: Lecanicillium fungicola, which causes Dry bubble disease, induces infections and inflicts major losses in champignon production. The control can be managed through measures of hygiene and use of fungicides; however, in Brazil there are no registered products. This study aimed to estimate the influence of various essential oils extracted from Melissa officinalis, Thymus vulgaris, Origanum vulgare, Eucalyptus globulus, Cinnamomum zeylanicum and Syzygium aromaticum on the in vitro development and their uses. Therefore, analysis was performed of the L. fungicola isolates in vitro and the best oils were tested in vivo. Besides, the Agaricus bisporus - L. fungicola interaction was confirmed by scanning electron microscopy (SEM). Cinnamon and clove oils...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dry bubble disease; Lecanicillium fungicola; Essential oils; SEM; Alternative control.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500155

Aortic stenosis with abnormal eccentric left ventricular remodeling secondary to hypothyroidism in a Bourdeaux Mastiff
Provedor de dados: 65
Autores: Minozzo,Guilherme Augusto; Stedile,Simone Tostes de Oliveira; Sousa,Marlos Gonçalves.
ABSTRACT: This paper describes a case of congenital aortic stenosis with eccentric left ventricular hypertrophy associated with hypothyroidism in a 1-year-old Bourdeaux Mastiff dog. The dog had ascites, apathy, alopecic and erythematous skin lesions in different parts of the body. A two-dimensional echocardiogram revealed aortic valve stenosis, with poststenotic dilation in the ascending aorta. The same exam showed eccentric hypertrophy and dilation of the left ventricle during systole and diastole. Aortic stenosis usually results in concentric left ventricular hypertrophy instead of eccentric hypertrophy; and therefore, this finding was very unusual. Hypothyroidism, which is uncommon in young dogs, may be incriminated as the cause of ventricular dilation,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypothyroidism; Echocardiogram; Ascending aorta; Left ventricular dilation; Heart disease.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900602

Phosphorus fractions in soil after successive crops of Pinus taeda L. without fertilization
Provedor de dados: 65
Autores: Gatiboni,Luciano Colpo; Vargas,Cristiane Ottes; Albuquerque,Jackson Adriano; Almeida,Jaime Antonio; Stahl,James; Chaves,Djalma Miller; Brunetto,Gustavo; Dall’Orsoletta,Daniel João; Rauber,Luiz Paulo.
ABSTRACT: Pinus cultivation without fertilization is a common practice in southern Brazil, which can induce a decline in the availability of phosphorus (P) in the soil. The purpose of this study was to evaluate the changes in phosphorus fractions in a Humic Cambisol subjected to continuous Pinus taeda L. cultivation without fertilization. Two forest stands were evaluated, after 16 years of Pinus cultivation (1st crop) and 49 years (3rd crop), when soil samples were collected (layers 0-10, 10-20, 20-40, 40-60, and 60-80cm) from six trenches per forest. In soil samples, the P contained in organic (Po) and inorganic (Pi) forms was determined by sequential chemical fractionation. Labile inorganic P fractions remained unchanged after the different cultivation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest rotations; Successive crops; Phosphorus fractionation; Labile phosphorus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700302

Experimental poisoning by Niedenzuella stannea in cattle and corresponding detection of monofluoroacetate
Provedor de dados: 65
Autores: Arruda,Felipe Peixoto de; Caldeira,Flávio Henrique Bravim; Ducatti,Kássia Renostro; Bezerra,Kalinne Stephanie; Marcolongo-Pereira,Clairton; Lee,Stephen Tomas; Cook,Daniel; Riet-Correa,Franklin; Colodel,Edson Moleta.
ABSTRACT: In Brazil sodium monofluoroacetate (MFA) containing plants are represented by 16 species that belong to three principle genera: Palicourea ( Rubiaceae ), Amorimia ( Malpighiaceae ), and Tanaecium ( Bignoniaceae ). These plants can cause acute cardiac failure often referred to as sudden death syndrome. The objective of this paper was to determine if N. stannea contains MFA and to report the clinical signs and pathology of cattle experimentally poisoned by this plant. MFA was detected in all  N. stannea plant parts except mature leaves. Niedenzuella stannea was dosed to cattle at single doses of 15-30g kg-1 bw. Clinical signs and pathology observed were similar to those reported by other MFA-containing plants. Animals showed marked tachycardia,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monofluoracetate; Toxic plants; Niedenzuella stannea; Sudden death syndrome; Acute cardiac failure.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300551

Can vaccines against canine visceral leishmaniasis interfere with the serological diagnostics recommended by the Brazilian Ministry of Health?
Provedor de dados: 65
Autores: Campos,Monique Paiva de; Luca,Paula Mello De; Renzetti,Alinne Rangel dos Santos; Souza,Sara Maria Marques de; Mendes Júnior,Artur Augusto Velho; Barros,Renata Simões; Figueiredo,Fabiano Borges.
ABSTRACT: The objective of the current research was to assess seroconversion in dogs immunized with Leishmune® and Leish Tec® vaccines using rapid chromatographic immunoassay DPP® (Dual Path Platform) (DPP CVL) and enzyme immunoassay (EIE) up to one year after the vaccination protocol. The study sample comprised 28 dogs divided into two groups, each group immunized with an anti-CVL vaccine and clinically monitored for one year through clinical evaluation and laboratory tests. 22 (78.5%) dog were monitored. During the evaluation time (T1-30 days, T2-6 months, and T3-1 year after vaccination) the results for all dogs were negative for CVL, except for one animal vaccinated with Leish tec® that seroconverted in the DPP CVL test at T2. Subsequent examinations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine visceral leishmaniasis; Vaccine; Diagnosis; Seroconversion.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400503

Oviposition of Quesada gigas in weed no hostess: implication in pest management
Provedor de dados: 65
Autores: Maccagnan,Douglas Henrique Bottura; Matuo,Tomás Kanashiro; Martinelli,Nilza Maria.
ABSTRACT: This study recorded the choice of dry plant of Conyza spp as oviposition site by cicada Quesada gigas (Olivier, 1790). We presented issues of natural history of the cicadas that indicate the inability of immatures to complete life cycle in this species of plant. Some implications on cultures where Q. gigas has economic importance are also discussed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paricá; Coffee; Buva; Bioecology; Control.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900152

Minilaparoscopic ovariohysterectomy in healthy cats
Provedor de dados: 65
Autores: Lawall,Thaíse; Beck,Carlos Afonso de Castro; Queiroga,Luciana Branquinho; Santos,Fabiane Reginatto dos.
ABSTRACT: The purpose of this study was to investigate the feasibility of minilaparoscopic (MINI) ovariohysterectomy (OHE) in healthy cats using three portals, one of 5 millimeters (mm) in diameter and two of 3mm diameter, along with bipolar diathermy. Technical difficulty, feasibility of MINI access, use of bipolar diathermy, surgery time, need for enlargement of incisions, trans- and post-operative complications and rate of conversion to open surgery were assessed. One out of 15 animals required incision enlargement, and one animal required conversion to celiotomy. The main postoperative complication observed was subcutaneous emphysema (46.7%). In conclusion, MINI OHE is feasible in healthy cats.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endosurgery; Spay; Feline.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200604

Substrate in the emergence and initial growth of seedlings of Caesalpinia pulcherrima
Provedor de dados: 65
Autores: Alves,Magnólia Martins; Alves,Edna Ursulino; Araújo,Luciana Rodrigues de; Lima,Maria de Lourdes dos Santos.
ABSTRACT:  Caesalpinia pulcherrima is an exotic species belongs to the Fabaceae family commonly known as flamboyant-mirim, and widely used for urban forestry. This study aimed to evaluate the effect of different substrates on the emergence and early seedlings growth of C. pulcherrima . The experiment was conducted in a greenhouse belonging to the Centro de Ciências Agrárias, Universidade Federal da Paraíba. The experimental design was completely randomized and treatments had 14 substrates: sand, vegetable soil, vermiculite, wood dust, carbonized rice straw, vegetable soil + sand 1:1, sand + wood dust 1:1, sand + carbonized rice straw 1:1, earth + wood dust 1:1, vegetable soil + carbonized rice straw 1:1, vermiculite + sand 1:1, vermiculite + wood dust 1:1,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flamboyant mirim; Ornamental species; Seeds; Vigor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300201

Cross-amplification of heterologous microsatellite markers in Piracanjuba
Provedor de dados: 65
Autores: Castro,Pedro Luiz de; Ribeiro,Ricardo Pereira; Santos,Silvio Carlos Alves dos; Goes,Elenice Souza dos Reis; Souza,Felipe Pinheiro de; Poveda-Parra,Angela Rocio; Vargas,Lauro; Urrea-Rojas,Angela Maria; Lopera-Barrero,Nelson Mauricio.
ABSTRACT: Brycon orbignyanus, popularly known in Brazil as piracanjuba, is a fish with great economic value but whose natural population drastically decreased in number during the last years. In this context, genetic variability studies of natural stocks and in restocking programs are fundamental for the adoption of conservation measures. Current analysis verifies the cross-amplification of heterologous primers in B. orbignyanus. Fifty-two primers of the species Brycon opalinus, Brycon hilarii, Brycon insignis, Prochilodus sp., Piaractus mesopotamicus, Colossoma macropomum and Oreochromis niloticus were tested. Primers with the best reproducibility were applied to a sample of 20 individuals and the genetic parameters were calculated. Nine primers provided...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brycon orbignyanus; Conservation; Molecular markers; Heterologous primers.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200402

Genetic stability in synthetic wheat accessions: cytogenetic evaluation as a support in breeding programs
Provedor de dados: 65
Autores: Frizon,Patrícia; Brammer,Sandra Patussi; Lima,Maria Imaculada Pontes Moreira; Castro,Ricardo Lima de; Deuner,Carolina Cardoso.
ABSTRACT: Synthetic wheat is developed by crossing tetraploid species ( Triticum turgidum , AABB) with a diploid species ( Aegilops tauschii , DD), followed by chromosome duplication through the use of colchicine to restore the resultant sterile hybrid to a fertile hexaploid plant. The main importance of producing synthetically improved wheat is to increase their genetic variability and to incorporate genes that code for resistance to biotic and abiotic stressors. This study aimed to evaluate the presence of micronuclei (MN) and the meiotic index (MI) in the tetrad phase in synthetic wheat accessions and cultivars ( Triticum aestivum ) stored at the Germplasm Bank of Embrapa Trigo (Brazil), in order to identify and select genetically stable accessions for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aegilops tauschii; Meiotic index; Micronuclei.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400401

Antibodies against rabies virus in dogs with and without history of vaccination in Santa Maria - RS - Brazil
Provedor de dados: 65
Autores: Fernandes,Karina Gonzalez; Martins,Mathias; Amaral,Bruna Portolan; Cargnelutti,Juliana Felipetto; Weiblen,Rudi; Flores,Eduardo Furtado.
ABSTRACT: The present study investigated the frequency and magnitude of neutralizing antibodies to rabies virus (RABV) in dogs with and without historic of vaccination in Santa Maria/RS. Group A included serum samples from 440 dogs with recent historic of vaccination against rabies, obtained during the 2015 rabies vaccination campaign. Group B included 300 serum samples from dogs submitted to the Veterinary Hospital of the Universidade Federal de Santa Maria in 2015, whose historic of rabies vaccination was unknown. Serum samples were submitted to the rapid fluorescent focus inhibition test (RFFIT) to detect neutralizing antibodies against RABV. In group A, 70.6% (310/440) of the samples had neutralizing antibody titers ≥0.5 international units per...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Immunity; RABV; Serological response; Vaccine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100452

Isolation and genotyping of Clostridium perfringens and Clostridium difficile in Capuchin Monkeys (Sapajus spp.)
Provedor de dados: 65
Autores: Silva,Rodrigo Otávio Silveira; Ferreira,Débora Rochelly Alves; Laroquec,Plautino de Oliveira; Xavier,Rafael Gariglio Clark; Lobato,Francisco Carlos Faria; Mota,Rinaldo Aparecido.
ABSTRACT: The importance of Clostridium perfringens and C. difficile for most wild animal species remains unclear. This study aimed to isolate and genotype C. perfringens and C. difficile in stool samples from free-living and captive capuchin monkeys (Sapajus flavius and Sapajus libidinosus) in Brazil. Ten free-living S. flavius and 14 captive S. libidinosus were sampled for this study. To isolate C. difficile, stool samples were inoculated on plates containing cycloserine-cefoxitin fructose agar supplemented with horse blood and sodium taurocholate. Two different protocols for C. perfringens isolation were tested: direct plating onto selective agar and enrichment in brain heart infusion (BHI) broth followed by plating onto selective agar. C. difficile was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: New World Primates (NWP); Enterocolitis; Sapajus libidinosus; Sapajus flavius.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200452

Erratum: Interference periods of velvet bean in sugarcane
Provedor de dados: 65
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100951

DiseasePlan - a spreadsheet application for training people to assess disease severity and to assist with standard area diagram development
Provedor de dados: 65
Autores: Sachet,Marcos Robson; Citadin,Idemir; Danner,Moeses Andrigo; Guerrezi,Marieli Teresinha; Pertille,Rafael Henrique.
ABSTRACT: Several computer applications have been proposed for the visual assessment of plant disease severity; however, they have some restrictions such as not permitting the user to make modifications. Therefore, the VBA-Excel application was developed as a means to train people to estimate disease severity and to validate standard area diagrams through images and disease severity values (percentage, rating or score) inserted into a database. The main performance statistics are screen displayed and spreadsheet recorded. Finally, the authors hope to receive evaluations and feedback regarding this application.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytopathological studies; Pathometry; Visual assessment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600154

Minimum alveolar concentration of isoflurane in dogs administered a single intramuscular injection of racemic or S (+)-ketamine after premedication with acepromazine-morphine
Provedor de dados: 65
Autores: Bressan,Thais Feres; Monteiro,Eduardo Raposo; Coelho,Karina; Monteiro,Betânia Souza; Campagnol,Daniela.
ABSTRACT: The present study evaluated the minimum alveolar concentration of isoflurane (ISOMAC) in twenty three dogs premedicated with acepromazine (0.02mgkg-1) and morphine (0.5mgkg-1) and administered racemic (RK) or S(+)-ketamine (SK). Dogs randomly received a single dose (3mgkg-1, IM) of either RK or SK 15minutes after anesthetic induction with propofol. The ISOMAC was determined by the up-and-down method. Approximately 20 minutes after administration of RK or SK, a surgical noxious stimulus was applied and the response evaluated. The ISOMAC was 0.50±0.01% in the RK group (n=10) and 0.31±0.04% in the SK group (n=13). The ISOMAC was 38% lower in the SK group compared to the RK group. Results of the present study revealed that in dogs premedicated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dissociative anesthesia; MAC; NMDA antagonist; Phencyclidine derivative; Preemptive analgesia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100601

Natural sparkling guava wine: volatile and physicochemical characterization
Provedor de dados: 65
Autores: Bertagnolli,Silvana Maria Michelin; Bernardi,Gabrieli; Donadel,Jossiê Zamperetti; Fogaça,Aline de Oliveira; Wagner,Roger; Penna,Neidi Garcia.
ABSTRACT: Although different tropical fruit species have been used in the development of fermented beverages, there are only few references in the literature to the production of natural sparkling wines from fruits other than grapes. In this sense, the objective of the present research was the development and physicochemical and volatile characterization of a natural sparkling guava wine produced by the champenoise method. Volatile compounds were identified by gas chromatography coupled to mass spectrometry using the headspace solid-phase microextraction (HS-SPME) technique on samples. Eighty-nine volatile compounds were detected, of which 51 were identified. Esters were the predominant class of volatile compounds (a total of 26), followed by alcohols...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Psidium guajava L.; Volatile compounds; Gas chromatography.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900782

Changes in permanent preservation areas in rural properties of the Santa Catarina state southern plateau according to the laws No. 4,771 and 12,651
Provedor de dados: 65
Autores: Bonamigo,Alessandro; Schimalski,Marcos Benedito; Soares,Philipe Ricardo Casemiro; Liesenberg,Veraldo; Souza,Tamiles Rodrigues de; Boesing,Tainara Lizandra Schizzi.
ABSTRACT: This research aimed to study the parameters of the current and past Brazilian Forest Act based on the Federal Laws No. 4,771 and 12,651 for the determination of the permanent preservation areas (PPA). Water springs and streams for 68 rural properties located at the Santa Catarina State Southern Plateau were considered. Thematic land use/land cover (LULC) as well as PPA maps from the visual interpretation of ortho rectified aerial images were elaborated. The PPA percentage for recovering over consolidated rural areas is directly proportional to both fiscal module size and area of the rural property. Comparing to the Law No. 4,771, there was a significant reduction in the PPA to be recovered on consolidated rural areas. In small rural properties...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian Forest Act; Consolidated rural area; Rural property; Fiscal module; Geo processing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200933

Fruit yield and composition in orange trees cv. 'Lane Late' in response to nitrogen fertilization in Sandy Typic Hapludalf soil
Provedor de dados: 65
Autores: Brunetto,Gustavo; Cella,Cesar; Miotto,Alcione; Girotto,Eduardo; Lorensini,Felipe; Brackmann,Auri; Ceretta,Carlos Alberto; Schorr,Márcio Renan Weber; Both,Vanderlei; Ambrosini,Vítor Gabriel.
ABSTRACT: Little is known about the impact of N fertilization on fruit production and composition in orange groves grown in soils with low or medium organic matter content in Rio Grande do Sul (RS). This study aimed to evaluate how N fertilization of orange trees cv. 'Lane Late' in a sandy soil may interfere in fruit yield and composition of fruit and juice. The experiment was conducted with orange trees cv. 'Lane Late' growing in Sandy Typic Hapludalf soil, in Rosário do Sul (RS). The plants received applications of 0, 20, 40, 60, 80, 100, 120, 140 and 160kg N ha-1. Total N in leaves, number of fruits per plant, yield, fresh weight, fruit diameter, peel thickness, percentage of fruit juice, peel color, juice color, ascorbic acid content, total soluble...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen; Leaf analysis; Fruit quality; Citrus sinensis L.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300253

Soil management and application of agricultural gypsum in a Planosol for soybean cultivation
Provedor de dados: 65
Autores: Marchesan,Enio; Tonetto,Felipe; Teló,Gustavo Mack; Coelho,Lucas Lopes; Aramburu,Bruno Behenck; Trivisiol,Vinicius Severo.
ABSTRACT: This study investigated the effects of soil management systems, tillage, and application of gypsum agricultural to soil, on soybean development in lowland areas. The experiment was carried out on an Alfisol in a randomized complete block design in a factorial arrangement. The two soil tillage practices were without deep tillage and with deep tillage. Gypsum treatments were no gypsum application, 500kg of gypsum ha-1, 1000kg of gypsum ha-1, and 1500kg of gypsum ha-1. Deep tillage resulted in less soil resistance to root penetration during ryegrass cultivation during the soybean offseason, 11 months after applying the management treatments, resulting in higher dry mass of ryegrass in the offseason and higher soybean yield in the following year.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L.; Deep tillage; Nodulation; Grain yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100201

Origin and evolution of tomato production Lycopersicon esculentum in México
Provedor de dados: 65
Autores: Saavedra,Tarsicio Medina; Figueroa,Gabriela Arroyo; Cauih,Jorge Gustavo Dzul.
ABSTRACT:  Lycopersicon esculentum known as tomato, although has an Andean origin is a contribution of Mexico to the world is, being the first agricultural product to be exported. This research aimed to review the literature in relation to the origin and evolution of the production of tomato in Mexico within the historical development of the country. In ancient times, the tomato was cultivated in milpas (open field) and chinampas (artificial islands for riparian agriculture) using sustainable methods. Spanish colonizers showed the tomato to the rest of the world and diversified its uses. In independent Mexico, haciendas and railroads integrated the different farming regions. Production decreased during the Mexican revolution, and with land reform, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon esculentum; Chinampas; Green revolution; Organic production; Biotechnology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300401

Corneal sensitivity in five horse breeds
Provedor de dados: 65
Autores: Andrade,Eunice Santos de; Vieira,João Victor Romano; Gomes Júnior,Deusdete Conceição; Raposo,Ana Claúdia Santos; Galera,Paula Diniz; Oriá,Arianne Pontes.
ABSTRACT: This study aimed to determine and compare corneal sensitivity values in different regions of the cornea in five horse breeds. One hundred and forty five healthy horses, adults of both sexes, of the following breeds - Arabian horse (AH; n=20), Mangalarga Marchador (MM; n=50), Pure Blood Lusitano (PBL; n=35), Quarter Horse (QH; n=20), Brazilian Sport Horse (BSH; n=20)-were investigated. Corneal touch threshold (CTT) was measured with a Cochet-Bonnet esthesiometer in five different corneal regions. Measurements of the median central CTT were: 4.50±0.50cm (AH), 3.50±0.56cm (MM), 3.00±0.25cm (PBL), 2.50±0.44cm (QH) and 2.50±0.00cm (BSH). The central region was the most sensitive and the dorsal region the least sensitive corneal region for all breeds....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arabian horse; Equus caballus; Cochet-Bonnet; Corneal touch threshold.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600602

Bispectral index assessment in calves subjected to the continuous infusion of propofol combined with fentanyl administration
Provedor de dados: 65
Autores: Deschk,Mauricio; Trein,Thomas Alexander; Wagatsuma,Juliana Tessália; Silva,Guilherme Lopes da; Araújo,Marcelo Augusto de; Games,Bruna de Moraes Martins; Alcindo,Jefferson Filgueira; Rodrigues,Celso Antônio; Santos,Paulo Sergio Patto dos.
ABSTRACT: The aim of this study was to evaluate the bispectral index (BIS) effects in calves through continuous infusion of propofol with or without fentanyl. Eight Holstein male calves (ages from six to twelve months old) with an average weight of 123±18kg were used. All animals participated in both groups, always keeping a minimum interval of one week between the anesthetic procedures; the calves were randomly distributed between groups. Anesthesia was induced with an intravenous (IV) dose of propofol of 5mg kg-1 in control group (GP) or with propofol (4mg kg-1) associated with IV fentanyl 0.001mg kg-1(GF). All the calves were positioned in right lateral recumbency and were allowed to spontaneously breathe room air. Subsequently, the anesthesia was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calves; Ruminants; Balanced anesthesia; Anesthetic monitoring.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100602

Equine nasopharyngeal cryptococcoma due to Cryptococcus gattii
Provedor de dados: 65
Autores: Cruz,Raquel Aparecida Sales da; Reis,Matheus de Oliveira; Leite Filho,Ronaldo Viana; Gonçalves,Maiara Aline; Spanamberg,Andréia; Sonne,Luciana; Ferreiro,Laerte; Pavarini,Saulo Petinatti; Driemeier,David.
ABSTRACT: Cryptococcus gattii is often associated with pulmonary and systemic infections in humans and animals. In this research we report a case of nasopharyngeal cryptococoma caused by C. gatti in an equine. A 10-year-old mare presented a mass obstructing the oropharynx. Macroscopically the mass was asymmetric, and was attached to the ethmoidal sinuses and obstructed the oropharynx. Histopathological examination of the mass revealed multiple yeast cells ranging from spherical to oval, 4-8μm in diameter, with some of them showing narrow base polar budding. Cryptococcus gattii growth in mycological culture (Sabouraud Dextrose Agar) and was L-canavanine-glycine-bromothymol blue Agar positive. The molecular identification confirmed the isolate as C. gattii...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycotic diseases; Crytococcosis; Equine; PCR; Cryptococcus gattii.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000551

Phytochemical characterization and bioactivity of ethanolic extracts on eggs of citrus blackfly
Provedor de dados: 65
Autores: Lima,Bruno Marcus Freire Vieira; Oliveira,Rosilene Aparecida de; Santos,Emerson Alves dos; Bittencourt,Maria Aparecida Leão; Santos,Olivia Oliveira dos.
ABSTRACT: The main objectives of this study were to determine the content of secondary metabolites (carotenoids, flavonoids, phenolic compounds, and tannins) of Argemone mexicana L., Ipomoea carnea Jacq. subsp. Fistulosa (Martius ex Choisy), Amorimia rigida (A.Juss.) W. R. Anderson, Ricinus communis L. and Syzygium aromaticum (L.) Merr. &amp; L. M. Perry using UV-VIS spectroscopy, and evaluating the bioactivity of the ethanolic extracts on citrus blackfly eggs (Aleurocanthus woglumi Ashby, 1915). Pera sweet orange leaves infested with citrus blackfly eggs were treated by immersion in 0.5, 1.0, 5.0, and 10%; each replicate consisted of 30 eggs. The experimental design was completely randomized, with seven treatments and four replications. Three immersions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aleyrodidae; Citrus blackfly; Phytochemical bioprospecting; Ricinus communis; Syzygium aromaticum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100154

Molecular evidence of early vertical transmission of Leishmania ( Leishmania ) infantum in a dog
Provedor de dados: 65
Autores: Oliveira,Vinícius Vasconcelos Gomes de; Ramos,Rafael Antonio Nascimento; Ramos,Carlos Alberto do Nascimento; Guerra,Neurisvan Ramos; Maia,Frederico Celso Lyra; Alves,Leucio Câmara; Silva Junior,Valdemiro Amaro da.
ABSTRACT: Visceral leishmaniasis (VL) is caused by the protozoon  Leishmania infantum . Transmission of this parasite to hosts occurs mainly through the bite of infected sand flies. However, alternative infection routes have been hypothesized, especially in areas where the biological vector is absent. The exact time of infection and whether in utero transmission occurs have still not been fully elucidated. This report demonstrates molecular evidence of vertical transmission of L. infantum from a pregnant dog to the embryo. Samples (e.g. vulva, vagina, cervix, uterine body, uterine horn and ovaries) from a female naturally infected by L. infantum and from her embryo were molecularly analyzed by means of qPCR and cPCR followed by DNA sequencing. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leishmaniasis; Dog; Vertical infection; Embryo.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100553

Berry-cluster thinning to reduce compactness of ‘Black Star’ table grapes
Provedor de dados: 65
Autores: Roberto,Sergio Ruffo; Mashima,Cesar Hideki; Colombo,Ronan Carlos; Assis,Adriane Marinho de; Koyama,Renata; Yamamoto,Lilian Yukari; Shahab,Muhammad; Souza,Reginaldo Teodoro de.
ABSTRACT: The berry-cluster thinning technique was evaluated at different phenological times to prevent bunch compactness of ‘Black Star’ table grape, a new somatic mutation of ‘Brasil’ grape. The trial was carried out during 2012 and 2013 seaons in a vineyard situated in Marialva, PR, Brazil. Vines were trained in an overhead trellis system and spaced at 3x4m. The randomized block design was used as a statistical model with five replications and five treatments. The following treatments were evaluated: control; brushing prior to anthesis; and berry-cluster thinning at different times, when berries were 3-6, 7-10, or 11-15mm in diameter. The prevalence of bunch compactness was evaluated considering the levels: loose, medium loose, and dense bunches. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis vinifera L.; Grape thinning; Cultural practices.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400206

Milk coagulation properties and methods of detection
Provedor de dados: 65
Autores: Beux,Simone; Pereira,Edimir Andrade; Cassandro,Martino; Nogueira,Alessandro; Waszczynskyj,Nina.
ABSTRACT: One of the most crucial steps in cheesemaking is the coagulation process, and knowledge of the parameters involved in the clotting process plays an important technological role in the dairy industry. Milk of different ruminant species vary in terms of their coagulation capacities because they are influenced by the milk composition and mainly by the milk protein genetic variants. The milk coagulation capacity can be measured by means of mechanical and/or optical devices, such as Lactodynamographic Analysis and Near-Infrared and Mid-Infrared Spectroscopy.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clotting; Curd firmness; Lactodynamograph; Infrared spectroscopy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000452

Meloidogyne and Pratylenchus species in sugarcane fields in the state of Alagoas, Brazil
Provedor de dados: 65
Autores: Noronha,Marissônia de Araujo; Muniz,Maria de Fátima Silva; Cruz,Marcelo de Menezes; Assunção,Mayara Castro; Castro,José Mauro da Cunha e; Oliveira,Ellen Rebecca Lopes de; Miranda,Camila Gonçalves dos Santos; Machado,Andressa Cristina Zamboni.
ABSTRACT: The objective of this study was to accomplish a survey on populations of  Meloidogyne and Pratylenchus species in sugarcane farming areas in the state of Alagoas, Brazil. Twenty samples of soil and roots were processed to extract and quantify nematodes; however, the identification of Meloidogyne species was performed using only 12 samples. Pratylenchus spp. were reported at moderate population levels of 68-1556 specimens 50g-1 of roots and 2-298 specimens 100cm-3 of soil in twenty analyzed samples. For Meloidogyne spp., these values were of 12-487 specimens 50g-1 of roots and 0-140 specimens 100cm-3 of soil. Based on electrophoresis of esterase isozymes, M. incognita was reported to be the most frequent species, followed by  M. javanica and  M....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Field survey; Plant-parasitic nematodes; Saccharum spp.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200151

Double sigmoidal models describing the growth of coffee berries
Provedor de dados: 65
Autores: Fernandes,Tales Jesus; Pereira,Adriele Aparecida; Muniz,Joel Augusto.
ABSTRACT: This study aimed to verify if the growth pattern of coffee berries, considering fresh mass accumulation over time, is double sigmoid and to select the most suitable nonlinear model to describe such behavior. Data used consisted of fourteen longitudinal observations of average fresh mass of coffee berries obtained in an experiment with the cultivar Obatã IAC 1669-20. The fits provided by the Logistic and Gompertz models were compared in their single and double versions. Parameters were estimated using the least squares method using the Gauss-Newton algorithm implemented in the nls function of the R software. It can be concluded that the growth pattern of the coffee fruit, in fresh mass accumulation, is double sigmoid. The double Gompertz and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Double Gompertz; Double Logistic; Nonlinear.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800401

Physiological quality of dual-purpose wheat seeds from plants subjected to artificial defoliation
Provedor de dados: 65
Autores: Rodolfo,Giselle Regina; Souza,Clovis Arruda; Coelho,Cileide Maria Medeiros; Belizario,Karla Katy.
ABSTRACT: Defoliation may play a role in source-sink relationships and reduce the physiological quality of seeds. The main goal of this research was to investigate the effect of successive defoliations on physiological quality of wheat seeds in 'BRS Umbu' and 'BRS Tarumã' cultivars. Two experiments were carried out using a complete randomized design with four replications. Treatments included plants without defoliation (0), and those where 1, 2, and 3 consecutives defoliations were applied. Seeds from each treatment originated from four different lots. Data were analyzed with one-way analysis of variance and means compared by Tukey test at 5% statistical probability. Germination was not affected by defoliation, or the number of cuts, but an effect on vigor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Cuts; Germination; Accelerated aging.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100201

Material evaluation for bagging of cantaloupe melons
Provedor de dados: 65
Autores: Vendruscolo,Eduardo Pradi; Leal,Lucas Rodrigues; Silva,Bruno César de Sousa e; Campos,Luiz Fernandes Cardoso; Martins,Angélica Pires Batista; Seleguini,Alexsander.
ABSTRACT: The objective of this study was to evaluate different materials for field bagging with respect to the physicochemical changes caused in cantaloupe melon fruits. The study was conducted in a protected environment in the city of Goiânia, Goiás in Brazil. The experiment consisted of five treatments, with bagging of cantaloupe melon fruits with four materials (newspaper, Kraft paper, NWF, and polyethylene) and a control treatment without bagging, in a randomized block design with five replications of one plant with a fruit each. Fruits were evaluated for physicochemical characteristics. Number of days from bagging to harvest was also recorded and visual aspects of the fruit were observed. The materials as well as the time interval between the bagging...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo L.; Noble melon; Organoleptic quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800202

Microbial contamination in industrial tofu
Provedor de dados: 65
Autores: Ribeiro,Thaís Teresa Brandão Cavalheiro; Costa,Géssica; Costa,Marisa da.
ABSTRACT: This study aimed to evaluate the microbiological quality of tofu sold in supermarkets in Porto Alegre/Brazil. Bacteria counts were performed for Bacillus cereus , mesophilic, coliforms and Staphylococcus coagulase positive and negative. The presence of Listeria sp. was also evaluated. Two different brands of tofu (A and B) were collected, one lot per month, for six months. Five samples from each lot were analyzed. All lots presented mesophilic aerobic counts above 4.3x105CFU g-1. Four of the six lots from brand A and all lots from brand B showed E. coli and/or Staphylococcus coagulase positive counts above the Brazilian law accepted limits. The Staphylococcus coagulase negative counts were higher than those of coagulase positive in all lots. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soy cheese; Mesophile; Coliforms; Staphylococcus; Coagulase.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300751

Water and sucrose diffusion coefficients during osmotic dehydration of sapodilla (Achras zapota L.)
Provedor de dados: 65
Autores: Coimbra,Lívia Muritiba Pereira de Lima; Arruda,Hayanna Adlley Santos de; Machado,Erilane de Castro Lima; Salgado,Silvana Magalhães; Albuquerque,Sônia Sousa Melo Cavalcanti de; Andrade,Samara Alvachian Cardoso.
ABSTRACT: Sapodilla is an original fruit from Central America that is well adapted in all regions of the Brazilian territory. Despite its wide adaptation and acceptance in fruit markets, it is rare to find it outside tropical regions, partially because of its high perishability. The development of alternative, simple, and inexpensive methods to extend the conservation and marketing of these fruits is important, and osmotic dehydration is one of these methods. The main objective of this study was to determine the water and sucrose diffusion coefficients during the osmotic dehydration of sapodilla. This process was performed in short duration (up to 6h) to evaluate detailed information on water loss and solids gain kinetics at the beginning of the process...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osmotic dehydration; Mass transfer; Diffusion coefficient; Sapodilla.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800204

Accuracy in the estimates of zucchini production related to the plot size and number of harvests
Provedor de dados: 65
Autores: Lúcio,Alessandro Dal'Col; Benz,Vilson.
ABSTRACT: The productive variability in horticultural crops affects the planning and quality of the experiments, inflating the error and leading to wrong conclusions with low experimental accuracy and reliability. The objective of this study was to dimension the plot size and number of harvests that are necessary so that there is improvement in the accuracy of zucchini production. The production data used was the one from the uniformity trials where the basic units (BU) were identified with the number of crop row and were numbered according to the position inside the row. With the values of individual production, (fresh fruit biomass) different plots sizes were simulated by summing up the adjacent BUs in the crop rows and the two forms of harvesting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucurbita pepo; Uniformity trial; Multiple regression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100202

Natural infection by Microsporum canis in a capuchin monkey
Provedor de dados: 65
Autores: Mota,Stéphanie Machado; Ferreira,Adriano Fernandes; Nery,Thiago Lopes; Farias,Roberto Citelli de; Mangueira,Amanda Figueiredo; Queiroga,Felisbina Luísa.
ABSTRACT: This paper described a case of a capuchin monkey (Sapajus libidinosus) with non-pruritic skin lesions. During the physical examination, multifocal areas of alopecia with crusts, erythema and scaling compatible with dermatophytosis were reported on the right fore and hind limbs and on tail. Fungal culture findings revealed a diagnosis of dermatophytosis due to Microsporum canis. The animal was successfully treated with itraconazole. This is the first report of a dermatophytosis case in S. libidinosus and the first description of an effective treatment in this species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatology; Ringworm; Tinea; Nonhuman primates; Sapajus libidinosus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600452

A retrospective study on the diagnosis of clostridial myonecrosis in ruminants in Brazil
Provedor de dados: 65
Autores: Pires,Prhiscylla Sadanã; Ecco,Roselene; Silva,Rodrigo Otávio Silveira; Araújo,Marina Rios de; Salvarani,Felipe Masiero; Heneine,Luíz Guilherme Dias; Oliveira Júnior,Carlos Augusto de; Lobato,Francisco Carlos Faria.
ABSTRACT: A standardized immunochemistry method for the diagnosis of clostridial myonecrosis was applied to 38 formalized tissue samples from ruminants with clinical and post mortem history suggestive of blackleg or gas gangrene. The diagnosis of clostridial myonecrosis was confirmed in 37 out of 38 (97.4%) samples tested. Clostridium chauvoei and Clostridium perfringens type A were the most common agents found alone, being detected in ten (26.3%) and six (15.8%) samples, respectively. The other cases showed an association of two or three clostridia, with C. perfringens type A detected in 11 (29%) cases. Based on the findings of the present study, polyvalent vaccines against clostridial infections of animals incorporating C. perfringens would be more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gas gangrene; Blackleg; Malignant edema; Cattle; Sheep; Immunohistochemistry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100452

PCR-based identification of Neospora caninum in the umbilical cord of a newborn calf in Brazil
Provedor de dados: 65
Autores: Azevedo da Cunha Filho,Nilton; Oliveira,Plínio Aguiar de; Oliveira,Fernando Caetano de; Pappen,Felipe Geraldo; Aguiar,Cintia Lidiane Guidotti; Santos Junior,Alceu Gonçalves dos; Costa-da-Silva,André Luis; Leite,Fabio Pereira Leivas; Farias,Nara Amélia da Rosa.
ABSTRACT: This study was conducted at a beef cattle breeding farm in the far southern region of Brazil. The birth of a calf with unilateral corneal opacity was immediately reported to the Laboratory of Parasitology, in the Universidade Federal de Pelotas, Rio Grande do Sul, Brazil; blood was collected from the cow and calf before colostrum intake. The umbilical cords from this calf and from six other healthy animals were collected. Serological examination, utilizing an indirect fluorescent antibody test, was done using a cut-off point of 1:100. Polymerase chain reaction (PCR) was also performed using the umbilical cord samples. Serological tests showed that the calf was positive for Neospora caninum at birth, with a titer of 1:1600; a titer of 1:3200 was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neospora caninum; Calves; Umbilical cord; Bovine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700501

Nonlinear modeling growth body weight of Mangalarga Marchador horses
Provedor de dados: 65
Autores: Souza,Felipe Amorim Caetano; Fernandes,Tales Jesus; Moura,Raquel Silva de; Meirelles,Sarah Laguna Conceição; Ribeiro,Rafaela Aparecida; Cunha,Fabiana Oliveira; Muniz,Joel Augusto.
ABSTRACT: The analysis of the growth and development of various species has been done using the growth curves of the specific animal based on non-linear models. The objective of the current study was to evaluate the fit of the Brody, Gompertz, Logistic and von Bertalanffy models to the cross-sectional data of the live weight of the MangalargaMarchador horses to identify the best model and make accurate predictions regarding the growth and maturity in the males and females of this breed. The study involved recording the weight of 214 horses, of which 94 were males and 120 were non-pregnant females, between 6 and 153 months of age. The parameters of the model were estimated by employing the method of least squares, using the iteratively regularized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Body weight; Cross-sectional method; Statistical models.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400657

Leptospirosis in native mixed-breed sheep slaughtered in a semiarid region of Brazil
Provedor de dados: 65
Autores: Costa,Diego Figueiredo da; Silva,Aline Ferreira da; Brasil,Arthur Willian de Lima; Loureiro,Ana Paula Pereira; Santos,Fabrine Alexandre dos; Azevedo,Sergio Santos de; Lilenbaum,Walter; Alves,Clebert José.
ABSTRACT: Sheep breeding is an economic activity of great value for the Brazilian livestock industry, and infectious diseases can significantly compromise its productivity. The aim of this study was to detect Leptospira spp. in mixed breed sheep from a semiarid region of the State of Paraíba, Northeast Brazil. In total, 49 blood and renal tissue samples, as well as 25 urine samples, were collected from 49 sheep in the slaughter line. The microscopic agglutination test (MAT) was used to verify the presence of anti -Leptospira spp. antibodies in blood samples. Renal tissue and urine samples were analyzed by both PCR and bacterial culture. Sero reactivity was observed in 8.2% (4/49) of animals. Three renal samples were positive for leptospiral DNA by PCR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leptospirosis; Small ruminants; PCR; Serology; Isolation; Slaughterhouse.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200451

Productive performance of soybean cultivars grown in different plant densities
Provedor de dados: 65
Autores: Ribeiro,Augusto Belchior Marchetti; Bruzi,Adriano Teodoro; Zuffo,Alan Mario; Zambiazzi,Everton Vinicius; Soares,Igor Oliveri; Vilela,Nelson Júnior Dias; Pereira,José Luiz de Andrade Rezende; Moreira,Silvino Guimarães.
ABSTRACT: Plants density in soybean cultivation is an important management practice to achieve high grain yield. In this way, the objective was to evaluate the agronomic traits and grain yield in soybean in different plant densities, in two locations in the south of Minas Gerais. The experimental design was in randomized blocks, arranged in a split plot design, with three replications. Plots were composed of four population densities (300, 400, 500 and 600 thousand plants per hectare) and the subplots were composed of six cultivars (‘BMX Força RR’, ‘CD 250 RR’, ‘FMT 08 - 60.346/1’, ‘NA 5909 RR’, ‘TMG 7161 RR’ and ‘V - TOP RR’) grown in Lavras and Inconfidentes, both in Minas Gerais. At the time of harvest was determined the plant height, lodging, insertion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max (L.) Merrill; Environments; Plants spatial arrangement; Yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700202

Accelerated aging as vigor test for sunn hemp seeds
Provedor de dados: 65
Autores: Silva,Clíssia Barboza da; Barbosa,Rafael Marani; Vieira,Roberval Daiton.
ABSTRACT: This study aimed to determine the most appropriate method to assess the sunn hemp ( Crotalaria juncea L.) seed vigor in the accelerated aging test. Five seed lots from harvest 2007/2008 were evaluated for germination, vigor and seedling emergence in the field. Accelerated aging test was performed at 41°C during 48, 72 and 96 hours, with and without sodium chloride saturated solution. Then, the promising procedure was also performed for 2008/2009 and 2009/2010 harvests. In the traditional accelerated aging test, the no-uniform water acquisition by the seeds adversely affected results. Accelerated aging test with sodium chloride saturated solution is the most appropriate method to evaluate the physiological potential of sunn hemp seeds, and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crotalaria juncea L.; Forage crop; Physiological potential; Germination; Standization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100402

Vigor tests to evaluate the physiological quality of corn seeds cv. 'Sertanejo'
Provedor de dados: 65
Autores: Sena,Daniela Vieira dos Anjos; Alves,Edna Ursulino; Medeiros,Dayana Silva de.
ABSTRACT: The vigor tests are intended to monitor the quality of seeds as it allows reliably distinguish lots of low and high vigor, providing additional information to the germination test. So in this study the objective was to identify the most efficient vigor tests on stratification of lots of corn seeds cv. 'Sertanejo'. The experiment was conducted at Laboratory of Seed Analysis at the Center of agricultural Science of the Universidade Federal da Paraíba, using samples from 20 seed lots in a completely randomized design. For characterization of the lots it was evaluated water content, germination and vigor (cold test, electrical conductivity, accelerated aging, seedling emergence in field and germination at low temperatures). The accelerated aging,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Viability; Seed analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300151

A time series analysis of bulk tank somatic cell counts of dairy herds located in Brazil and the United States
Provedor de dados: 65
Autores: Rodrigues,Liz Gonçalves; Aquino,Maria Helena Cosendey de; Silva,Márcio Roberto; Mendonça,Letícia Caldas; Mendonça,Juliana França Monteiro de; Souza,Guilherme Nunes de.
ABSTRACT: Bulk tank somatic cell counts (BTSCC) is widely used to monitore the mammary gland health at the herd and regional level. The BTSCC time series from specific regions or countries can be used to compare the mammary gland health and estimate the trend of subclinical mastitis at the regional level. Three time series of BTSCC from dairy herds located in the USA and the Southeastern Brazil were evaluated from 1995 to 2014. Descriptive statistics and a linear regression model were used to evaluate the data of the BTSCC time series. The mean of annual geometric mean of BTSCC (AGM) and the percentage of dairy herds with a BTSCC greater than 400,000 cells mL-1 (%&gt;400) were significantly different (P&lt;0.05) according to the countries and the times...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bulk tank somatic cell counts; Time series; Bovine mastitis; Brazil; United States.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400451

Partial correlation analysis in the study of morphogenesis and herbage accumulation in Panicum maximum cv. ‘Tanzânia’
Provedor de dados: 65
Autores: Braz,Thiago Gomes dos Santos; Martuscello,Janaina Azevedo; Santos,Manoel Eduardo Rozalino; Pereira,Vinícius Valim.
ABSTRACT: The objective of this study was to evaluate, through partial correlation analysis, the degree of association between herbage accumulation and morphogenetic traits of ‘Tanzania’ grass (Panicum maximum Jacq.) defoliated with 95% of light interception and fertilized with nitrogen, under different planting densities. The experiment was carried out in a randomized complete design with 12 treatments and two replicates, in a 4 × 3 factorial arrangement consisting of four nitrogen rates (0, 80, 160, and 320kg ha-1 Yr-1) and three planting densities (9, 25, and 49 plants m-2). Harvests were performed at 25cm above the soil, when the plots intercepted 95% of the incident light. The simple correlation coefficients between herbage accumulation and leaf and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen; Pasture management; Pearson correlation; Plant density.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900402

Hybrid cultivars of pear in subtropics regions: processing ability in the form of jelly
Provedor de dados: 65
Autores: Curi,Paula Nogueira; Bisi,Rayane Barcelos; Salgado,Derlyene Lucas; Barbosa,Caio Morais de Alcântara; Pio,Rafael; Souza,Vanessa Rios de.
ABSTRACT: The aim of this study was to characterize five different hybrid cultivars pears (‘Tenra’, ‘Centenária’, ‘Cascatence’, ‘Primorosa’ and ‘Seleta’) deployed in subtropical regions of Brazil regarding its physicochemical characteristics, bioactive compounds and antioxidant activity, as well as to evaluate the influence of these cultivars on the characteristics physicochemical, rheological properties and sensory acceptance of the obtained jelly, for identifying varieties with higher potential for industrial use. Regardingthe bioactive compounds and antioxidant activity it was observed that ‘Seleta’ cultivar was characterized by a higher phenolic content (57.68mg GAEs 100g-1), higher antioxidant activity (13.56% of DPPH sequestration and 1.25µM of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus communis x Pyrus pyrifolia; Quality; Sensory acceptance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100751

Maximum soil density of Entisols as a function of silt content
Provedor de dados: 65
Autores: Broch,Djulia Taís; Klein,Vilson Antonio.
ABSTRACT: Degradation that occursin agricultural soils causes compaction.Soil density (DS) analysis has been reported to be an unreliable method of measuring the extent of soil compaction, because it varies with the soil granulometric composition and organic matter (OM)content. However, soil relative density (DR) is a good indicator that facilitates the measurement of the degree of compaction and thus, soil comparison and management techniques. Quotient between the DS and its maximum density (Dsmax) gives the DR. This study aimed to assess the effect of the granulometric composition on the physical-hydrological properties of the high-silt containing soils,under no tillage. Samples from disturbed and undisturbed structures of 18 soils were collected from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Proctor test; Silt; Relative density.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200251

Didatic approach of ultrasonographic examination for evaluation of the carpal joint in horses
Provedor de dados: 65
Autores: Hage,Maria Cristina Ferrarini Nunes Soares; Invernizzi,Mariana Sachi; Bellegard,Gabriela Monaldo Corrá; Dória,Renata Gebara Sampaio; Schwarzbach,Silke Verena; Miada,Vanessa Junko Yamaguti.
ABSTRACT: The carpus is a complex articulation, which is often involved in injuries in equine athletes. The objective of this study was to suggest a didactic approach for ultrasonography training for the examination of the carpal joint in horses. Ultrasonograhy examination was performed in a healthy 14-year-old horse. The images were compared with those of a dissected anatomic specimen of the carpal region of a senior horse and with those reported in the literature. Identifiable structures were as follows: (dorsal) tendon of the muscle extensor carpi radialis, tendon of the muscle extensor carpi obliquus, tendon of the muscle commom digital extensor, dorsal synovial outpouchings, joint capsule and fat cushion, (lateral) tendon of the muscle lateral digital...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Horses; Education; Bones; Tendons; Ultrasonography.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200601

Different methods of real-time PCR for detection of pseudorabies virus
Provedor de dados: 65
Autores: Nonaka,Carolina Kymie Vasques; Fonseca Junior,Antônio Augusto; Guedes,Estefânia Oliveira; D´Ambros,Régia Maria; Lima,Graciela Kunrath; Camargos,Marcelo Fernandes; Heinemann,Marcos Bryan.
ABSTRACT: Pseudorabies (PR) is a highly contagious viral disease of great animal health and economic importance in swine industry. The aim of this study was to evaluate different genomic regions, real-time PCR chemistries and equipment for the molecular diagnosis of PR. Eight primer pairs targeting four genes (gB, gC, gE, gD), three different qPCR chemistries (SybrGreen, hydrolysis probes and plexor) and two equipment (ABI7500, Rotorgene 3000) were evaluated. Oligonucleotides targeting gB using hydrolysis probes showed the best performance after evaluating efficiency (99%), the detection limit (10-1.5 TCID50 mL-1) and diagnostic sensitivity and; therefore, those primers were selected for performance verification factors such as repeatability,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Real time PCR; Pseudorabies; Diagnose.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300452

The use of tubular subdermal and axial flaps in the correction of four cases of extensive lesions
Provedor de dados: 65
Autores: Huppes,Rafael Ricardo; Pazzini,Josiane Morais; Nardi²,Andrigo Barboza De; Castro,Jorge Luiz Costa; Gomes,Cristiano; Sprada²,Arícia Gomes; Pascolli²,Ana Lúcia.
ABSTRACT: The most common skin lesions in small animals result from trauma, burns, or surgical resection of large tumors. Given the high importance of reconstructive surgery associated with tumors in small animals, this study reports four cases of reconstructive surgery using subcutaneous and axial tubular flaps in animals with neoplastic lesions. Subdermal and axial tubular flaps are healthy alternatives for reconstructing wounds caused by large tumor resection in areas with poor tissue elasticity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reconstructive surgery; Axial flap; Subdermal flap; Cancer; Canine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100603

Biocontrol agents in the management of Meloidogyne incognita in tomato
Provedor de dados: 65
Autores: Silva,Juliana de Oliveira; Santana,Marcus Vinícius; Freire,Leonardo Levorato; Ferreira,Bruno da Silva; Rocha,Mara Rúbia da.
ABSTRACT: Recognized as prominent among the principal pests of tomato crop, the root-knot nematode (Meloidogyne incognita) has generated much study with regards to control methods. This study aimed to assess the efficiency of biological products in decreasing the M. incognita population in tomato. Four experiments were conducted under greenhouse conditions. Two of these experiments had the purpose to determine the efficiency of NemOut™ (Bacillus subtilis + B. licheniformis + Trichoderma longibrachiatum), and the other two to assess the efficiency of other different biological products in M. incognita management. Tomato plants of the cultivar Santa Cruz Kada Giant were inoculated using 2000 eggs and J2 of M. incognita. In the first two experiments doses...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Root-knot nematode; Solanum lycopersicum; Opportunistic fungi; Pochonia chlamydosporia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000151

Long-term nitrogen fertilization in native pasture with Italian ryegrass introduction - Effects on soil health attribute indicators
Provedor de dados: 65
Autores: Cecagno,Diego; Anghinoni,Ibanor; Costa,Sérgio Ely Valadão Gigante de Andrade; Brambilla,Daniel Martins; Martins,Amanda Posselt; Magiero,Emanuelle Cavazini; Bagatini,Tatiane; Assmann,Joice Mari; Nabinger,Carlos.
ABSTRACT: Native pastures are of great importance for cattle and sheep nutrition in the Pampa biome. However, due to its low productivity, the Italian ryegrass introduction and the nitrogen (N) fertilization are alternatives proposed to intensify livestock production in a sustainable manner. The objective of this study was to evaluate the effects of long-term N application on soil health indicators in a native pasture with Italian ryegrass introduction in southern Brazil. The experiment consists of a secondary native pasture under continuous grazing and constant herbage allowance. In 1996 experimental area was broadcast limed and the experiment was initiated, testing three N topdressing rates (0, 100 and 200kg N ha-1 year-1). In 2010 soil of experimental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon and nitrogen stocks; Microbial biomass; Natural pasture.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500252

Agronomical indicators and incidence of insect borers of tomato fruits protected with non-woven fabric bags
Provedor de dados: 65
Autores: Filgueiras,Rosenya Michely Cintra; Pastori,Patrik Luiz; Pereira,Fabrício Fagundes; Coutinho,Cristiane Ramos; Kassab,Samir Oliveira; Bezerra,Laura Carla Marinho.
ABSTRACT: Fruit bagging is an efficient mechanical control technique used in fruit growing. However, to date, few studies have evaluated the efficacy of bagging in the cultivation of vegetables, including tomato crops. The objective of this study was to evaluate the effectiveness of bagging of tomato flowers and/or fruits using a non-woven fabric (NWF) for the control of Helicoverpa spp., Neoleucinodes elegantalis, and Tuta absoluta, to evaluate the effect of this technique on the final yield, and determine the optimal period for bagging. Tests were conducted in a commercial crop of staked ‘Valerin’ tomato plants located in the municipality of Ubajara, Ceará State, Brazil. The experimental design was randomized blocks with a 2x4 factorial design (sprayed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum; Mechanical control; Neoleucinodes elegantalis; Productivity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600152

Postharvest quality of ‘Galaxy’ apples submitted to the treatment with 1-MCP and different cooling times between harvest and cold storage
Provedor de dados: 65
Autores: Hackbarth,Crizane; Steffens,Cristiano André; Amarante,Cassandro Vidal Talamini do; Stanger,Mayara Cristiana; Brackmann,Auri.
ABSTRACT:  In this research it was evaluated if the use of 1-methylcyclopropene (1-MCP), associated to different cooling times between the harvest and storage, replaces the pre-cooling in ‘Galaxy’ apples. Treatments were arranged in a factorial scheme, combining the following factors: application of 1-MCP (with or without) and different times between harvest and cooling (24 hours, 96 hours, 144 hours and 192 hours in 2013; and 24 hours, 48 hours, 144 hours and 240 hours in 2014). After four months of cold storage (1.0±0.2°C/92±5% RH - Relative Humidity) were evaluated: flesh firmness, texture, titratable acidity (TA), soluble solids (SS) and skin color. Apples treated with 1-MCP showed greater flesh firmness, texture and SS, in both years, and more TA and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cooling delay; Fast cooling; Malus domestica Borkh.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800203

Sample size for estimation of the Pearson correlation coefficient in cherry tomato tests
Provedor de dados: 65
Autores: Sari,Bruno Giacomini; Lúcio,Alessandro Dal’Col; Santana,Cinthya Souza; Krysczun,Dionatan Ketzer; Tischler,André Luís; Drebes,Lucas.
ABSTRACT: The aim of this study was to determine the required sample size for estimation of the Pearson coefficient of correlation between cherry tomato variables. Two uniformity tests were set up in a protected environment in the spring/summer of 2014. The observed variables in each plant were mean fruit length, mean fruit width, mean fruit weight, number of bunches, number of fruits per bunch, number of fruits, and total weight of fruits, with calculation of the Pearson correlation matrix between them. Sixty eight sample sizes were planned for one greenhouse and 48 for another, with the initial sample size of 10 plants, and the others were obtained by adding five plants. For each planned sample size, 3000 estimates of the Pearson correlation coefficient...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum var. cerasiforme; Sampling; Resampling; Bootstrap.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000206

Alternatives to antibiotics in diets of weaned piglets
Provedor de dados: 65
Autores: Ferreira,Soraia Viana; Barbosa,Lívia Maria dos Reis; Soares,Marcos Henrique; Marcolla,Camila Schultz; Holanda,Débora Muratori; Saraiva,Alysson.
ABSTRACT: This experiment was conducted to evaluate the effect of growth promoter additives an alternative to antibiotics on performance, intestinal morphology and on microbiota of 21-to-35-day-old piglets. A total of 160 commercial crossbred piglets (males and females) with initial weight of 6.10±0.709kg were allotted in a completely randomized design with five treatments: Basal diet - Negative Control (NC); Basal diet + antibiotic (PC); Basal diet + mannanoligosaccharides (MOS); Basal diet + organic acids (OA), Basal diet + mannanoligosacharides + organic acids (MOS+OA), eight replicates and four piglets per experimental unit. The inclusion of additives in the diets had no effect (P&gt;0.05) on the final average weight of piglets. Similarly, no effects...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Growth promoters; Organic acids; Prebiotics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200651

Methods for the evaluation of antibiotic resistance in Lactobacillus isolated from fermented sausages
Provedor de dados: 65
Autores: Wolupeck,Hanna Lethycia; Morete,Crisley Aparecida; DallaSanta,Osmar Roberto; Luciano,Fernando Bittencourt; Madeira,Humberto Maciel França; Macedo,Renata Ernlund Freitas de.
ABSTRACT: The present study aimed to assess the antibiotic resistance in 54 indigenous Lactobacillus plantarum isolated from artisanal fermented sausages. The confirmation of the strain species was performed by multiplex-PCR assay. Antibiotic resistance was assessed by disk diffusion (DD) and Minimum Inhibitory Concentration (MIC) methods. Of 54 L. plantarum, 44 strains were genotypically confirmed as L. plantarum and 3 as Lactobacillus pentosus. The highest resistance rates were to ampicillin and streptomycin. The highest susceptibility rates were shown to tetracycline, chloramphenicol and penicillin G. None of the strains showed multidrug resistance. Resistance rates by DD and MIC were not different (P&gt;0.05) for ampicillin, chloramphenicol,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meat product; Multiplex PCR; Probiotic; Susceptibility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800452

Ocular diseases in dogs naturally affected by visceral leishmaniasis in Teresina, Piauí, Brazil
Provedor de dados: 65
Autores: Freitas,Marcus Valérius de Matos; Brun,Cristiane Ferreira da Luz; Rodrigues,Marcelo Campos; Alves,Georgia Brenda Barros; Leal,Ariane Farias; Silva,Esther Machado de Carvalho e; Grolli,Lucas; Quessada,Ana Maria.
ABSTRACT: This study aimed to characterize ocular diseases in dogs naturally affected by visceral leishmaniasis in Teresina, Piauí State, Brazil. The diagnosis was made using parasitological exams of the bone-marrow and lymph-node samples. The main ophthalmological findings were uveitis, conjunctivitis, blepharitis, keratitis, and keratoconjunctivitis sicca. Normocytic normochromic anemia was the main hematological finding, followed by thrombocytopenia. Plasma proteins were also considered, and hyperproteinemia, hypergammaglobulinemia, and hypoalbuminemia were observed. Ocular histopathological examination revealed mild inflammation involving lymphocytes, monocytes, and macrophages. Results indicate the need to perform a differential diagnosis to rule out...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Eye; Leishmania sp; Zoonosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000504

Isotopic abundance of  13 C and contribution of eucalyptus biomass to soil organic matter conversion
Provedor de dados: 65
Autores: Severo,Fabiane Figueiredo; Aita,Natália Tobin; Marques,Laila Garcia; Silva,Leandro Souza da.
ABSTRACT:  It has become possible to evaluate the conversion of soil organic matter (SOM) in pastures and arboreal crops due to the difference between the photosynthetic cycles of Eucalyptus (C3) and most grasses (C4). The auto analyzer method coupled to the IRMS (Isotope Ratio Mass Spectrometer) in the present study evaluated the 13C content in soil profiles of Eucalyptus plantations of different ages (2, 10 and 21 years), in natural regeneration areas and natural grazing fields, and estimated the SOM conversion of each crop type of. The initial management of all sampled areas was natural pasture. The following profile layers were evaluated: 0-5, 5-10, 10-20, 20-30, 30-40, 40-50, 50-70 and 70-90cm, and the contribution of Eucalyptus biomass over the years...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cycle C3; Cycle C4; Eucalyptus grandis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400251

Phytophagous mites on genetically modified maize with Bacillus thuringiensis genes
Provedor de dados: 65
Autores: Ferreira,Tamara Esteves; Fadini,Marcos Antonio Matiello; Mendes,Simone Martins; Marinho,Cidália Gabriela Santos; Cruz,Ivan.
ABSTRACT: The study of non-target organisms such as mites, can provide information about the possible effects of transgenic maize cultivars on the arthropod community. This study aimed to evaluate the abundance of phytophagous mites in the area of Bt maize and evaluate the instantaneous population growth rate, and food preference of phytophagous mites on Bt maize. We registered the species occurrence and the number of adult mite individuals on four maize cultivars, one non-Bt 30F35, and three containing the proteins Cry1Ab (30F35 Yg), Cry1F (30F35 Hx) and Vip3a (Impacto Viptera). Cry proteins disrupt the midgut epithelium of insect pests. The food preference and instantaneous population growth rate (ri) were evaluated using the two-spotted spider mite...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant defense; Non-target organisms; Genetically modified organisms Bt protein; Diptilomiopidae; Eriophyidae; Tetranychidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000202

Grafting technique and rootstock species for the propagation of  Plinia cauliflora
Provedor de dados: 65
Autores: Cassol,Darcieli Aparecida; Pirola,Kelli; Dotto,Marcelo; Citadin,Idemir; Mazaro,Sérgio Miguel; Júnior,Américo Wagner.
ABSTRACT: One of the biggest challenges for expansion of jabuticaba fruit tree cultivation is the high cost of seedlings due to to difficulties with vegetative propagation. Here, we aimed to evaluate graft survival in combinations of Plinia cauliflora and rootstocks of other species from the Myrtaceae family. The study was carried out at the Universidade Tecnológica Federal do Paraná - Campus Dois Vizinhos, Paraná State, Brazil. Eugenia uniflora L., E. involucrata DC, and P. cauliflora were used as rootstocks and were obtained as seeds. The 'whip-and- tongue' and cleft grafting techniques were tested for vegetative propagation. Grafted plants were cultivated in a greenhouse. The experimental design was a randomized complete block, in factorial 3×2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jabuticaba Açú tree; Incompatibility; Myrtaceae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200407

Genetic correlation and path analysis of common bean collected from Caceres Mato Grosso State, Brazil
Provedor de dados: 65
Autores: Gonçalves,Danilo de Lima; Barelli,Marco Antonio Aparecido; Oliveira,Taniele Carvalho de; Santos,Paulo Ricardo Junges dos; Silva,Claudete Rosa da; Poletine,Juliana Parisotto; Neves,Leonarda Grillo.
ABSTRACT: The aim of the study was to determine genetic correlations of agronomic traits and to evaluate direct and indirect effects, through path analysis, between variables analyzed with grain yield. Forty accessions of common bean, cultivated at Caceres County were evaluated, by using randomized complete blocks design with three repetitions. Coefficient magnitudes of genotypic correlations were superior to phenotypic and environmental ones for most correlations, suggesting greater influence of genetic factor than environmental factors. In order to determine the importance of direct and indirect effects, path analysis was performed, which provided greater reliability in interpretations of cause and effect between studied traits, indicating that grain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomic traits; Correlation coefficient; Crop breeding; Phaseolus vulgaris L.; Grains yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800201

Leishmania infantum infection in dogs from maroon communities in the Eastern Amazon
Provedor de dados: 65
Autores: Silva,Andréia Ferreira da; Damasceno,Ágatha Rossanni Alves; Prado,Welton Seabra; Caldeira,Rossela Damasceno; Sampaio-Junior,Francisco Dantas; Farias,Diana Maria de; Silva,Laís Cristina Oliveira da; Guimarães,Ricardo José de Paula Souza e; Góes-Cavalcante,Gustavo; Scofield,Alessandra.
ABSTRACT: This study was designed to detect L. infantum infection in dogs and to evaluate the factors associated with canine visceral leishmaniasis in the maroon communities of Menino Jesus de Petimandeua and Itaboca in the municipality of Inhangapi, Pará, Brazil. Whole blood and intact skin samples were collected from 143 dogs, and a questionnaire was applied. L. infantum DNA was detected by polymerase chain reaction (PCR) using primers RV1 and RV2. Collection sites were georeferenced to obtain a spatial distribution of the residences visited and infected dogs. L. infantum DNA was detected in 8.4% (12/143) of the skin samples and in 1.4% (2/143) of the blood samples. On the risk map, three clusters were observed in Itaboca and one was observed in Menino...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leishmania infantum; Maroon communities; Dog; PCR; Eastern Amazon.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100501

Stability in chromosome number and DNA content in synthetic tetraploids of  Lolium multiflorum after two generations of selection
Provedor de dados: 65
Autores: Pereira,Roselaine Cristina; Santos,Natália de Souza; Bustamante,Fernanda de Oliveira; Mittelmann,Andrea; Techio,Vânia Helena.
ABSTRACT: Chromosome doubling of Italian ryegrass genotypes ( Lolium multiflorum Lam.) adapted to the brazilian edaphoclimatic conditions is an important strategy used by breeders and aims to obtain more vigorous genotypes with better forage quality and disease resistance. The effectiveness of chromosome doubling can be measured by genetic stability and fertility rates of plants over generations. However, a common problem in the polyploidization process is the regeneration of mixoploid plants that have impaired fertility and genetic stability. The objective of this study was to verify if progenies of recently tetraploidized plants remain stable regarding DNA content and chromosome number, over two generations. Progenies of L. multiflorum plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromosomal duplication; Mixoploidy; Italian ryegrass; Plant breeding.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200401

Carcass characteristics of Canindé goats subjected to feed restriction
Provedor de dados: 65
Autores: Bezerra,Andreia Batista; Gonzaga Neto,Severino; Medeiros,Ariosvaldo Nunes de; Carvalho,Francisco Fernando Ramos de; Bispo,Safira Valença; Souza,Anaiane Pereira; Santos Neto,José Maurício dos; Ribeiro,Luana Paula dos Santos.
ABSTRACT: This study aimed to evaluate the effects of feed restriction on the carcass characteristics of castrated Canindé goat kids. A randomized block design was used, in which 21 goat kids with a body weight (BW) of 15.9±1.0kg were allocated to three levels of feed restriction: ad libitum, 20% and 40% restriction related to the ad libitum intake. The diet consisted of 55% forage (Tifton) and 45% concentrate. All animals were slaughtered when the kids fed ad libitum reached a BW of 25kg. After slaughter, the carcasses were chilled for 24 hours and subsequently measured. Kids fed ad libitum and subjected to 20% feed restriction showed similar morphometric carcass measurements, except for the chest circumference. Goat kids fed ad libitum exhibited greater...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass yield; Commercial cuts; Native breed.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800651

Indicators to assess goat welfare on-farm in the semiarid region of Brazilian Northeast
Provedor de dados: 65
Autores: Leite,Luana Oliveira; Stamm,Fabiana de Orte; Garcia,Rita de Cassia Maria.
ABSTRACT: In 2015, AWIN Goat Protocol was published in Europe, with indicators that identify welfare level of lactating dairy goats; however, there are no welfare protocols for meat goat. Therefore, the objective of this study was to select animal and resource-based indicators to assess welfare in meat goat in different types of grazing systems in Brazilian semiarid Northeast. Eighteen indicators were selected to evaluate the welfare of meat goat. The knowledge of the welfare degree of these animals is the best way to make improvements and promote a better quality of life to meat goat.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Animal-based measures; Quality of life; Parameter; Protocol.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900652

Applying precision feeding to improve the nitrogen efficiency of swine production: a review of possible practices and obstacles
Provedor de dados: 65
Autores: Monteiro,Alessandra Nardina Trícia Rigo; Bertol,Teresinha Marisa; Kessler,Alexandre de Mello.
ABSTRACT: Optimizing nutrient efficiency is essential in order to increase sustainability of pig production systems, especially where the growing demand for food must be met at an affordable cost, without compromising environmental resources. To make this happen, it is necessary to develop efficient methods to accurately estimate the nutritional requirements of animals, as well as develop equipment and systems that allow for applying such expertise in the production system. Estimating the nutritional requirement of pigs through mathematical models, considering several factors that can impact the requirement, is a key factor to reduce the environmental load from pig production. Likewise, feed formulation and feeding programs, can help to achieve this. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet formulation; Environmental impact; Modelling; Nutritional requirement; Pig.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700653

Stay-green character and its contribution in Brazilian wheats
Provedor de dados: 65
Autores: Luche,Henrique de Souza; Silva,José Antônio Gonzalez da; Nornberg,Rafael; Hawerroth,Maraisa Crestani; Silveira,Solange Ferreira da Silveira; Caetano,Vanderlei da Rosa; Santos,Rodrigo Lisboa; Figueiredo,Ricardo Garcia; Maia,Luciano Carlos da; Oliveira,Antônio Costa de.
ABSTRACT: The stay-green character has been related to greater stress tolerance and yield through longer activity of the photosynthetic apparatus. Association of this character with grain yield may be linked to a network of features other than the grain mass. This study aimed to shed light on the actual contribution of stay-green character in Brazilian wheats and the associations between grain yield components in different environmental conditions. The experiment was conducted in a randomized block design with three replications in the years 2003, 2004 and 2005. Sibling lines with and without the stay-green character were evaluated analyzing the phenotypic correlation and path analysis separately by year and maturity group. Under favorable growing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Delayed senescence; Correlation; Path analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100204

Copaiba oil in experimental wound healing in horses
Provedor de dados: 65
Autores: Lucas,Flavia de Almeida; Kandrotas,Adriana Lima; Nardin Neto,Eugenio; Siqueira,Carlos Eduardo de; André,Gabriela Santo; Bromerschenkel,Ingrid; Perri,Silvia Helena Venturoli.
ABSTRACT: The aim of this study was to evaluate the effects of 10% copaiba oil in experimentally induced wounds in horses. Four wounds were made in the lumbar and metacarpal regions of eight adult horses. In the treatment group, the wounds received 10% copaiba oil and in the control group 0.9% sodium chloride, in the daily dressing for 21 days. The wounds were evaluated three, 7, 14, and 21 days postoperatively. No significant differences were observed between the groups. The mean lumbar wound contraction rates were 80.54% and 69.64%, for the control and treated groups, respectively. For the wounds in the metacarpal region, these averages were 44.15% and 52.48%, respectively. Under the experimental conditions of the present study, it is concluded that 10%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytotherapy; Wound healing; Equine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400601

Peach cultivars from tropical regions: characterization and processing potential
Provedor de dados: 65
Autores: Curi,Paula Nogueira; Tavares,Bruna de Sousa; Tadeu,Maraísa Hellen; Melo,Evaldo Tadeu de; Pio,Rafael; Souza,Vanessa Rios de.
ABSTRACT: In order to increase the availability to consumers and add even more value to peaches (Prunus persica (L.) Batsch) and to identify which cultivars grown in tropical regions are more suitable for jelly processing, the objective of this study was to characterize and evaluate the influence of different peach cultivars (‘Aurora’, ‘Biuti’, ‘Bonão’, ‘Centenário’, ‘Diamante’, ‘Douradão’, ‘Libra’, ‘Régis’ and ‘Tropical’) cultivated in tropical regions on the physicochemical characteristics, rheological properties and sensory acceptance of the resulting jelly. The evaluated cultivars presented great variability among themselves in relation to the physical and physicochemical characteristics. The jellies elaborated from these cultivars; although,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica (L.) Batsch; Sensory quality; Processing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200203

Trigeminismo supraventricular em um cão com doença mixomatosa da valva mitral
Provedor de dados: 65
Autores: Soares,Frederico Aécio Carvalho.
RESUMO: O trigeminismo supraventricular é um distúrbio incomum de formação do impulso elétrico cardíaco. Detectar e tratar arritmias cardíacas são um importante objetivo terapêutico em cardiologia. O objetivo desta nota é relatar a ocorrência de trigeminismo supraventricular em um cão com doença mixomatosa da valva mitral (DMVM). Um cão sem raça definida, macho, inteiro, 15 anos de idade e 13kg foi levado para avaliação cardíaca com um histórico de sopro cardíaco, tosse, dispneia e ascite. Os achados ecocardiográficos foram compatíveis com doença mixomatosa de valvas mitral e tricúspide com comprometimento hemodinâmico severo. A eletrocardiografia (ECG) revelou arritmia sinusal com presença de complexos supraventriculares prematuros isolados, aos pares e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arritmia; Canino; Eletrocardiografia; Endocardiose.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900604

Consumption of baru nuts (Dipteryx alata) in the treatment of obese mice
Provedor de dados: 65
Autores: Araújo,Andreia Cristina Ferraz; Rocha,Juliete Castro; Paraiso,Alanna Fernandes; Ferreira,Adaliene Versiani Matos; Santos,Sergio Henrique Sousa; Pinho,Lucineia de.
ABSTRACT: The present study evaluated the effects of baru nut consumption on body weight, percent adiposity, amount of adipose tissue and blood levels in obese male Swiss mice. After inducing obesity by providing high-glucose diet (60 days), the mice were divided into 4 groups (7 animals per group) and were fed on a control diet (C), high-glucose diet (HG) or high-glucose diet added with baru (HGBA) or soybean oil (HGSO). Groups fed with diet HGBA had a decrease in the weight gain and glucose and triglyceride levels when compared to diet HG. Aimals fed with HG exhibited a higher proportion of epididymal and retroperitoneal adipose tissue. The inclusion of baru nut in the diet improved the control of weight gain and glucose and triglyceride levels in obese...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Obesity; Functional food; Baru nuts.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200405

Erratum: Didatic approach of ultrasonographic examination for evaluation of the carpal joint in horses
Provedor de dados: 65
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200951

Deterioration and fermentability of energy cane juice
Provedor de dados: 65
Autores: Ceccato-Antonini,Sandra Regina; Bassi,Ana Paula Guarnieri; Paraluppi,Anna Livia; Santos,Eder Gustavo Dias dos; Matsuoka,Sizuo.
ABSTRACT: The main interest in the energy cane is the bioenergy production from the bagasse. The juice obtained after the cane milling may constitute a feedstock for the first-generation ethanol units; however, little attention has been dedicated to this issue. In order to verify the feasibility of the energy cane juice as substrate for ethanol production, the objectives of this research were first to determine the microbiological characteristics and deterioration along the time of the juices from two clones of energy cane (Type I) and second, their fermentability as feedstock for utilization in ethanol distilleries. There was a clear differentiation in the bacterial and yeast development of the sugarcane juices assayed, being much faster in the energy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioenergy; Biomass; Renewable energy; Ethanol 1G.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900751

Leaching and residual activity of imidazolinone herbicides in lowland soils
Provedor de dados: 65
Autores: Refatti,João Paulo; Avila,Luis Antonio de; Noldin,José Alberto; Pacheco,Igor; Pestana,Rodrigo Ribeiro.
ABSTRACT: Herbicides used in the Clearfield® rice (Oryza sativa L.) production system have a potential for leaching. This can result in contamination of underground water resources and cause injury to not tolerant crops that are sown in a succession and/or crop rotation. The objective of this study was to determine the leaching potential and the residual activity of the herbicides used in the Clearfield® rice system. The experiment was conducted over a period of two years and consisted of conducting a field test to be followed by two bioassays with a year of difference between their implementation. Initially an experiment was conducted in lowland area where it was planted the cultivar of rice ‘PUITA INTA CL’. Approximately one and two years thereafter,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Imazethapyr; Imazapic; Imazapyr; Contamination; Groundwater.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500154

Postoperative care and long-term follow-up after a rostral mandibulectomy to treat an ossifying fibroma in a horse
Provedor de dados: 65
Autores: Câmara,Antônio Carlos Lopes; Passos,Marcel Batista dos; Peneiras,Anna Beatriz Veltri; Pereira,Júlio Rafael de Melo; Teixeira Neto,Antonio Raphael; Soto-Blanco,Benito.
ABSTRACT: Ossifying fibroma is a disfiguring benign neoplasia of the jaw that affects young animals of several species, including horses. The present report described the postoperative care and long-term follow-up after a rostral mandibulectomy (RM) that was performed to treat an ossifying fibroma in a horse. A 3-year-old crossbred horse presented a hard, well-defined, 14.5×10.0×9.5cm ulcerated mass attached to the rostral mandible. Radiographic findings were compatible with a nonaggressive mandibular bone deformity (benign neoplasia). Histological features confirmed the diagnosis of the ossifying fibroma. After the RM, the horse slowly adapted to the new feeding conditions and was discharged when it fully recovered and was capable of feeding on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benign neoplasia; Mandibular growth; Postoperative adaptation; Rostral mandible.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100604

Hemodynamic gestational adaptation in bitches
Provedor de dados: 65
Autores: Almeida,Vívian Tavares de; Uscategui,Ricardo Andres Ramirez; Silva,Priscila Del Aguila da; Avante,Michele Lopes; Simões,Ana Paula Rodrigues; Vicente,Wilter Ricardo Russiano.
ABSTRACT: Throughout pregnancy, maternal hemodynamic adaptation is needed to ensure proper uterine perfusion and fetal development. When the uteroplacental vascular system is formed, starting with reduced resistance to uterine arterial flow, this results in decreased total vascular resistance, an activation of neuroendocrine vasoactive peptides, an increase in circulating blood and changes in the cardiovascular system morphophysiology to respond to the increasing demands of uterine perfusion. There has been considerable study of hemodynamic adaptation in pregnant women and this assessment has become a diagnostic tool for fatal obstetric disorders. However, in bitches the available information in this regard is limited; therefore a parallel was drawn...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cardiovascular; Pregnancy; Gestation; Morphophysiology; Dogs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700601

Different feeding habits influence the activity of digestive enzymes in freshwater fish
Provedor de dados: 65
Autores: Gioda,Carolina Rosa; Pretto,Alexandra; Freitas,Carine de Souza; Leitemperger,Jossiele; Loro,Vania Lucia; Lazzari,Rafael; Lissner,Leandro Ademar; Baldisserotto,Bernardo; Salbego,Joseânia.
ABSTRACT: The aim of this study was to verify the activity of some digestive enzymes in four fish species with different feeding habits. Knowledge of these enzymatic activities can help us to understand the species' digestive processes. The species chosen for this study were Ctenopharyngodon idella (herbivore), Rhamdia quelen (omnivore), Leporinus obtusidens (omnivore) and Hoplias malabaricus (carnivore). The digestive tract of these species was divided into four portions to estimate enzymatic activity: stomach, anterior, mid and posterior intestine.  Ctenopharyngodon idella had the highest amylase and maltase activities in all portions of the gut, followed by L. obtusidens . The highest trypsin activity was observed in all gut portions of H. malabaricus,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freshwater fishes; Feeding habits; Enzymatic activity; Amylase; Alkaline protease; Maltase; Trypsin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300406

Pesticide selectivity to natural enemies: challenges and constraints for research and field recommendation
Provedor de dados: 65
Autores: Bueno,Adeney de Freitas; Carvalho,Geraldo Andrade; Santos,Antônio Cesar dos; Sosa-Gómez,Daniel Ricardo; Silva,Débora Mello da.
ABSTRACT: Pesticides are considered the first line of defense for the control of pests and diseases. At least in the short and medium term, the use of pesticides will remain an important strategy for pest management, allowing growers to produce crops of sufficient quality at low costs. A broad approach known as Integrated Pest Management (IPM) combines several different pest-control strategies, among which the combination of chemical and biological control stands out. It requires pesticides that achieve optimal control of target pests with minimal impact on the activity of biological control agents. Because of the dynamics of pest infestations, IPM routines are continuously adjusted by growers, requiring comprehensive information about pesticide effects on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IPM; Biological control; Chemical control.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600157

Fluid-dynamic behavior of flaxseed fluidized and spouted bed
Provedor de dados: 65
Autores: Santana,Elza Brandão; Valente,Maria da Conceição da Costa; Corumbá,Lorena Gomes; Andrade,Elisangela Lima; Costa,Cristiane Maria Leal; Faria,Lênio José Guerreiro de.
ABSTRACT: Processing of particles in a moving bed, such as a fluidized bed or a spouting bed, is commonly used in the operations of drying, coating, and granulation of particulate systems. This process has applications in the chemical, pharmaceutical and, presently, agronomical industries, especially for seed treatment/coating. This research aimed to analyze the fluid-dynamic behavior of fluidized and spouting beds with different air temperatures and loads of flaxseeds (Linum usitatissimum L.), with estimates of the fluid-dynamic parameters correlated to each process. The parameters were compared with the values obtained from classical correlations in the literature, with indications of associated percentages of deviation. Influence of fluid dynamics on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Linum usitatissimum L.; Dynamic bed; Physiological quality; Germination; Fluid-dynamic parameters.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000207

Accidents involving specialized aircraft in agriculture aerial spraying
Provedor de dados: 65
Autores: Ravelli,Marcelo Boamorte; Zerbato,Cristiano; Oliveira,Mailson Freire de; Corrêa,Rafael de Graff.
ABSTRACT: The great challenge for the practice of agricultural aviation has been to avoid accidents. Although, there are technological progress and high resources for safety, accidents continue to occur. The objective of this research was to analyze the influence and occurrence of factors in agricultural aviation accidents in Brazil recently. Based on research and technical - scientific papers written by researchers and aviation authorities, recommendations directed towards reducing the risks associated with this aircraft modality are assessed. The main factors responsible for accidents are normally operational errors and maneuvers that cause flight collisions, engine failures and altitude loss. Professional awareness and qualification converge towards the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Specialized aviation; Agricultural aviation; Danger; Safety; Training.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700356

Zeolites in poultry and swine production
Provedor de dados: 65
Autores: Schneider,Aline Félix; Zimmermann,Otavio Fernando; Gewehr,Clóvis Eliseu.
ABSTRACT: Zeolites are minerals that have intriguing properties such as water absorption, ion adsorption and cation exchange capacity. There are approximately 80 species of natural zeolites recognized and hundreds of artificial zeolites, which have been researched in several fields. Due to their chemical characteristics, zeolites have great potential for use in animal production, especially in poultry and swine farms, as food additives, litter amendment and treatment of residues, with direct and indirect effects on performance, yield and quality of carcass, ambience of farm sheds and reduction of environmental pollution.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Moisture; Pollution; Poultry; Swine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800652

Chemical composition, microbiological properties, and fatty acid profile of Italian-type salami with pork backfat substituted by emulsified canola oil
Provedor de dados: 65
Autores: Backes,Angela Maria; Cavalheiro,Carlos Pasqualin; Stefanello,Flávia Santi; Lüdtke,Fernanda Luísa; Terra,Nelcindo Nascimento; Fries,Leadir Lucy Martins.
ABSTRACT:  Vegetable oils have been used to substitute pork backfat to improve the fatty acid profile of fermented sausages. The aim of this study was to assess the chemical composition, microbiological properties, and fatty acid profile of Italian-type salami with pork backfat substituted (15% and 30%) by emulsified canola oil. Fat contents decreased while moisture contents increased in Italian-type salami with emulsified canola oil. The growth of lactic acid bacteria in salami was not affected by canola oil and absence of fecal coliforms, coagulase-positive staphylococci, and Salmonella were reported during processing of fermented sausages. Lower levels of saturated fatty acids (SAFAs), higher levels of monounsaturated fatty acids (MUFAs) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermented sausages; Vegetable oils; Lipid content; Polyunsaturated fatty acids; Nutritional value.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800751

Winter cover crops affecting physical and chemical soil attributes in a commercial vineyard
Provedor de dados: 65
Autores: Veiga,Milton da; Feldberg,Nelson Pires; Nava,Gilberto; Bettoni,Jean Carlos.
ABSTRACT: Cover crops may have direct or indirect effects on the physical and chemicalsoil attributes; these cropsplay a key role in the cycling of nutrients in the soil and add labile organic carbon, bringing economic and environmental benefits to the system. To study the effect of cover crops on the physical and chemical properties of an Oxisol, a three-year experiment was conducted in a commercial vineyard located at Epagri’s Experimental Station in Videira, SC, Brazil. Different winter species (white clover, red clover, common vetch, turnip, corn spurrey, black oat, rye, and ryegrass) were sown in addition to treatments with manual weeding or mechanical mowing. Certain chemical and physical attributes of soil were determined in samples collected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic matter; Nutrients; Bulk density; Soil porosity; Vitis spp.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200252

Morphological pattern of colonization by mycorrhizal fungi and the microbial activity observed in Barbados cherry crops
Provedor de dados: 65
Autores: Silva Júnior,José Maria Tupinambá da; Mendes Filho,Paulo Furtado; Gomes,Vânia Felipe Freire; Almeida,Aldênia Mendes Mascena de; Garcia,Kaio Gráculo Vieira.
ABSTRACT: Our objective was to evaluate the morphological pattern of colonization by arbuscular mycorrhizal fungi (AMF) as well as to study the microbiological activity of the soil on family farms where Barbados cherry was cultivated. Soil and root samples were selected from four areas in the municipality of Maranguape-CE where Barbados cherry was grown, which were named according to the age of plants in the following manner: A1-3, A2-3, and A3-3 (3 years), and A4-2 (2 years). After sampling, the arbuscular mycorrhizal colonization, morphological colonization pattern, basal soil respiration (SBR), and density of mycorrhizal spores (DS) were analyzed. The Paris-type morphological pattern was predominant in the root system of Barbados cherry; the affinity of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malpighia emarginata D.C.; Family farming; Mycorrhizal.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200202

Anatomo-pathological aspects of parasitism by nematodes of the superfamily Metastrongyloidea in wild crab-eating fox (Cerdocyon thous) in Midwestern Brazil
Provedor de dados: 65
Autores: Ferreira Júnior,Jair Alves; Blume,Guilherme Reis; Sousa,Susy Karoline Hermes de; Carvalho,Clarissa Machado de; Gardiner,Chris.
ABSTRACT: Nematodes of the superfamily Metastrongyloidea affect the respiratory, cardiovascular, and nervous systems of domestic carnivores and are uncommonly detected in wild animals. This report describes the lesions associated with pulmonary parasitism by nematodes of the superfamily Metastrongyloidea in a wild crab-eating fox ( Cerdocyon thous ) in the Federal District, Brazil. Grossly, there was pulmonary hyperemia, edema, and emphysema. Microscopically, there was granulomatous arteritis associated with intravascular metastrongylid. The anatomical location, characteristic lesion, and histological features of the parasite suggested that the nematode involved in this case is Angiostrongylus vasorum . This worm is frequently reported parasitizing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Angiostrongylus; Nematode; Wild canids; Pathology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200501

Air and fuel supercharge in the performance of a diesel cycle engine
Provedor de dados: 65
Autores: Farias,Marcelo Silveira de; Schlosser,José Fernando; Martini,Alfran Tellechea; Santos,Gustavo Oliveira dos; Estrada,Javier Solis.
ABSTRACT: This paper aimed to evaluate the performance of a Diesel cycle engine, changing the configurations for the air and fuel supply system. Variables analyzed were torque, power, specific fuel consumption and thermal efficiency in four different engine configurations (aspirated, aspirated + service, turbocharged + service and turbocharged). For that, there were dynamometer experiments by power take-off of an agricultural tractor. The experimental outline used was entirely randomized, in a bifatorial design with three repetitions. Results indicated that the engine supercharge, compared to its original configuration, provided a significant increase of torque and power. Only the addition of turbo does not caused a significant effect in the engine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural tractor; Turbocharger; Injection pump; Fuel consumption.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600352

Impact of fungicide and insecticide use on non-target aquatic organisms in rice paddy fields
Provedor de dados: 65
Autores: Wandscheer,Alana Cristina Dorneles; Marchesan,Enio; Silva,Marília Ferreira da; Aramburu,Bruno Behenck; David,Ricardo de; Trivisiol,Vinicius Severo; Silva,Anelise Lencina da.
ABSTRACT: The intensive use of plant protection products in rice paddy fields ( Oryza sativa L.) has caused concern about the environmental impact on communities of non-target organisms that are natural inhabitants in these agroecosystems. The purpose of this review is to analyze the data currently available in the literature about some important fungicides and insecticides (such as trifloxystrobin, tebuconazole, tricyclazole, lambda-cyhalothrin, and thiamethoxam), which are currently used to control pests and diseases in rice paddy fields, as well as their effects on the community of non-target aquatic organisms.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant protection products; Benthic insects; Oryza sativa L.; Lowlands.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100153

Pattern of follicular development in sheep subjected to ovarian superstimulation after follicular ablation by laparoscopic ovum pick-up
Provedor de dados: 65
Autores: Denadai,Renan; Leite,Hyago Ramalho; Bicudo,Luana de Cássia; Rodello,Leandro; Oba,Eunice; Bicudo,Sony Dimas.
ABSTRACT: The aim of this study was to determine the pattern of follicular development in ewes following ablation of all follicles associated with ovarian superstimulatory treatment. After confirmation of reproductive cyclicity using ultrasonography and progesterone levels, five adult ewes of undetermined breed received a vaginal pessary containing 60mg of medroxyprogesterone, maintained for 10 days, with the application of 100μg cloprostenol on the fourth day. On the tenth day, 300UI equine chorionic gonadotropin (eCG) was applied together with 80mg FSH, and all visible follicles were aspirated by laparoscopic ovum pick-up (LOPU). Following LOPU, ovarian structures were assessed using sonography every 8 hours for a period of 64 hours, and the number and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Follicular dynamics; Superstimulation; Ultrasound; Ewes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100701

Relevant aspects of golden retriever muscular dystrophy for the study of Duchenne muscular dystrophy in humans
Provedor de dados: 65
Autores: Moraes,Julieta Rodini Engrácia de; Malvestio,Lygia Maria Mouri; Martins,Isabela Mancini; Mosko,Patrícia Regina Erdmann; Engracia Filho,Jair Rodini; Moraes,Flávio Ruas de.
ABSTRACT: Golden Retriever muscular dystrophy (GRMD) is the most representative model for studying Duchenne muscular dystrophy (DMD) in humans, owing its phenotypic expression. DMD is a recessive disorder linked to the X chromosome in which the loss of dystrophin induces progressive weakness and degeneration of the skeletal and cardiac muscles, which lead to replacement by connective and adipose tissues. Onset of clinical signs occurs between 2 and 5 years of age, and many patients die from heart or respiratory failure. The main studies concerning dystrophic Golden Retrievers (DGR) sought to elucidate the pathophysiology of the disease and its clinical implications to develop therapies and alternative treatments to improve the quality of life and increase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Duchenne muscular dystrophy; Animal model; Dystrophic Golden Retriever.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000503

Rangeliosis: histopathological analysis, hematology and molecular detection of canine Rangelia vitalii in Rio Grande do Sul, Brazil
Provedor de dados: 65
Autores: Fredo,Gabriela; Leite-Filho,Ronaldo Viana; Pietzsch,Camila De Ávila; Andrade,Caroline Pinto de; Duda,Naila Cristina Blatt; Nascimento,Lismara Castro do; Valle,Stella de Faria; Soares,João Fábio; Sonne,Luciana.
ABSTRACT: In the period from January 2004 to December 2015, 56 dogs were diagnosed with rangeliosis in the Setor de Patologia Veterinária at Universidade Federal do Rio Grande do Sul (SPV-UFRGS). The main hematological abnormalities were thrombocytopenia and anemia. The affected dogs showed signs of apathy, anorexia, fetid and bloody diarrhea, vomiting, and dehydration. At necropsy, the main changes were jaundice, splenomegaly, hepatomegaly, and lymphadenomegaly. Histological analyses revealed parasitophorous vacuoles of Rangelia vitalii in cytoplasmic endothelial cells, mainly in the heart, kidneys, lymph nodes, intestines, and pancreas. Inflammation characterized by mononuclear cells was predominant in the analysis, and most was due to the presence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canids; Hemoparasite; Nambyuvú; Rangelia vitalii; Rangeliosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000501

Garlic essential oil increases rates of eggs fertilization and hatching of Rhamdia quelen larvae in an artificial incubation system
Provedor de dados: 65
Autores: Marengoni,Nilton Garcia; Pereira,Letícia Angélica; Weiss,Luciane Aline; Besen,Mateus Antonio; Bombardelli,Robie Allan.
ABSTRACT:  The objective of this study was to evaluate the effects of garlic (Allium sativum) essential oil on the rates of eggs fertilization and hatching and on the normal development of larvae of artificially incubated silver catfish (Rhamdia quelen). The experiment was carried out using a completely randomized experimental design with four treatments and five replicates. The treatments consisted of introducing garlic essential oil into the incubators, which used a closed system of water recirculation, at concentrations of 0, 1, 3, and 5mg L-1. Rates of eggs fertilization and larval hatching were determined at 10 and 24h after the beginning of eggs hydration. Morphology of larvae was assessed with the aid of a stereo microscope to determine the rate of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silver catfish; Antimicrobials; Hatching rate; Larvae; Allium sativum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600652

Morphological, biochemical, and molecular characterization of Meloidogyne spp. populations from Brazilian soybean production regions
Provedor de dados: 65
Autores: Oliveira,Camilla Martins de; Souza Junior,Ismail Teodoro; Araújo Filho,Jerônimo Vieira de; Freitas,Marcos Augusto de; Rocha,Mara Rúbia da; Petrofeza,Silvana.
ABSTRACT: Soybean is a commodity of great economic importance worldwide, particularly in Brazil, world’s second largest producer. Nematodes, especially those of the Meloidogyne genus, severely limit productivity. Identification of nematode species is important for effective soybean management. Here, 26 populations of root-knot nematode (Meloidogyne spp.) from 15 municipalities in the states of Bahia, Mato Grosso, Goias, and Minas Gerais were characterized based on the morphology of the female perineal region, esterase profile, and identification based on amplification of specific regions of the population genome. Among the Meloidogyne spp. populations obtained, M. incognita and M. javanica, were identified. No mixed populations were present in the samples....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Root-knot nematode; Glycine max; Esterase; Molecular identification.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500151

Urolithiasis with uroperitoneum and hydronephrosis in grazing cattlein Southern Brazil
Provedor de dados: 65
Autores: Santos,Bianca Lemos dos; Pereira,Clairton Marcolongo; Coelho,Ana Carolina Barreto; Silva,Pablo Estima; Oliveira,Plínio Aguiar de; Stigger,Adriana Lücke; Schild,Ana Lucia.
ABSTRACT: The purpose of this paper was to describe obstructive urolithiasis with uroperitoneum and hydronephrosis in range cattle in southern Rio Grande do Sul. The disease was observed in castrated male cattle, aged between 18 months and 3 years in a herd of 200 steers that were in a ryegrass pasture during the winter and a native pasture during the summer. Different mineral salts were used as a supplement for the animals during the two seasons of the year. Cattle presented a progressive abdominal distention, depression and dehydration ranging from 10 days to one month in duration. One animal was necropsied, and approximately 50 liters of urine (uroperitoneum) in the abdominal cavity were observed. The bladder had a small rupture and was adhered to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ruminants; Uroliths; Hydronephrosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600554

Bulk soybean grain mass temperature in warehouses with isolated vents and vent-exhaust combined systems
Provedor de dados: 65
Autores: Pontes,Eliza Rigoni de; Weirich Neto,Pedro Henrique; Justino,Altair; Rocha,Carlos Hugo; Garcia,Luiz Cláudio.
ABSTRACT: This study aimed to compare the temperatures in the mass of bulk soybeans ( Glycine max ) in warehouses with isolated vents and vent-combined exhaustion. A completely randomized design was used, with two treatments and ten repetitions. Treatments consisted of warehouse with curved vents and warehouse with curved + static exhaust vents. Each repetition contained the average of all readings in three days in all cables of the warehouse part under study, totaling 10 repetitions per month. The variable analyzed was the temperature in the grain mass in the lower, middle and upper parts of the warehouse from January to May 2012. The environment temperature and humidity were also registered. Static hoods, along with curved vents on the roof of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Static exhaust; Glycine max; Post-harvest and curved vents.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100851

Land use changes after the period commodities rising price in the Rio Grande do Sul State, Brazil
Provedor de dados: 65
Autores: Silveira,Vicente Celestino Pires; González,José Antonio; Fonseca,Eliana Lima da.
ABSTRACT: At the end of the 20th and early 21st century, agricultural systems incorporated definitively a new mission: to generate goods for a world population that continues to grow and whose way of life demand food with low environmental impact. Soybean is the main raw material for the production of biodiesel in Brazil, accountably responsible for 82.4% of the total produced between 2006 and 2013. The Brazilian state of Rio Grande do Sul (RS), which is formed by the Pampa and the Atlantic forest biomes, was responsible for 35.7% of the country's biodiesel production in the referred period. The aim of this paper was to verify the impact of the increased area of soybean cultivation in land use in Rio Grande do Sul State, in the period between 1990 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pampa biome; Atlantic Forest Biome; Biodiesel; Soybean cultivation; Commodity prices.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400931

In vitro pollen viability of maize cultivars at different times of collection
Provedor de dados: 65
Autores: Martins,Emanoel Sanches; Davide,Livia Maria Chamma; Miranda,Gian José; Barizon,Jefferson de Oliveira; Souza Junior,Francisco de Assis; Carvalho,Rafael Pelloso de; Gonçalves,Manoel Carlos.
ABSTRACT: In the present study, we aimed to assess the in vitro viability of pollen grains from maize cultivars collected at different times and days in the field. Four cultivars (Sol da Manhã, XB 6012, XB 8010, and BRS 2020) were evaluated from the second to fifth day of anthesis in three times. Pollen samples were evaluated for their in vitro viability through standard germination test in liquid and solid media and tetrazolium staining. The experimental design was completely randomized, in 4x4x3 split-split plots with four replicates. Data were subjected to analysis of variance followed by a means clustering test and linear regression analysis. The average percentage of viable pollen varied according to the day, collection time, and cultivar. In general,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthesis; Maize pollinization; Zea mays.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200201

Temporal dynamics of spectral reflectance and vegetation indices during canola crop cycle in southern Brazil
Provedor de dados: 65
Autores: Pinto,Daniele Gutterres; Fontana,Denise Cybis; Dalmago,Genei Antonio; Cunha,Gilberto Rocca da; Fochesato,Elizandro; Vicari,Matheus Boni; Gouvêa,Jorge Alberto de; Santi,Anderson.
ABSTRACT: The objective of this study was to characterize the variability of spectral reflectance and temporal profiles of vegetation indices associated with nitrogen fertilization, crop cycle periods, and weather conditions of the growing season in canola canopies in southern Brazil. An experiment was carried out during the 2013 and 2014 canola growing seasons at EMBRAPA Trigo, Passo Fundo, state of Rio Grande do Sul, Brazil. The experiment was conducted in a randomized block design with four replications. Five doses of nitrogen top dressing were used as treatments: 10, 20, 40, 80, and 160kg ha-1. Measurements were obtained with the spectroradiometer positioned above the canopy, to construct spectral reflectance curves for canola and establish temporal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spectroradiometry; Nitrogen fertilization; Brassica napus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100200

High-moisture sorghum grain silage with low- and high-tannin contents for weanling piglets
Provedor de dados: 65
Autores: Lopes,Ana Beatriz Rocha de Castro; Tse,Marcos Lívio Panhoza; Silva,Anália Maria Ribeiro da; Trindade Neto,Messias Alves da; Pereira,Carolina Silva; Saleh,Mayra Anton Dib; Berto,Dirlei Antonio.
ABSTRACT: Sorghum is the second cereal used in pigs’ diets in Brazil, which has a lower cost than corn, thus this experiment aimed to study the effects of high-moisture sorghum silage grain with high- and low-tannin contents on silage quality and piglets’ performance. A total of seventy-two weaned piglets were allocated into randomized blocks with six replicates and four treatments, based on diets with dry corn grain (DCG); dry sorghum grain with low-tannin (LTSG), high-moisture sorghum grain silage with low-(LTSS) and high-tannin (HTSS). The ensiling process decreased total and condensed tannin contents to 31% and 98% for LTSS and, to 80% and 93% for HTSS, respectively. No treatment effects observed on average daily feed intake and average daily weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ensiling process; Performance; Pigs; Sorghum grain.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400654

The legal reserve: historical basis for the understanding and analysis of this instrument
Provedor de dados: 65
Autores: Santiago,Thaís Muniz Ottoni; Rezende,José Luiz Pereira de; Borges,Luís Antônio Coimbra.
ABSTRACT: The revisions made in the Forest Code (FC) in 2012 appear to have promoted the weakening of the legal reserve (LR), which after at least 80 years of development, had become established in the Brazilian legal system as an instrument of environmental conservation. This study investigated the possibility of disruption in the implementation of the LR and was developed using qualitative approaches, including bibliographical and documental analyses, to assess the historical construction and legal format of the instrument over time. It was concluded that the current Forest Code broke the trend of development of the LR as an instrument of environmental conservation that was promoted by previous codes and removed the conditions necessary for its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian forest code; Environmental law; Deforestation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200301

Metastatic mammary carcinoma in a cow
Provedor de dados: 65
Autores: Piva,Manoela Marchezan; Schwertz,Claiton Ismael; Henker,Luan Cleber; Millán,Yolanda; Mulas,Juana Martín de las; Stedille,Fernanda Augustini; Christ,Ricardo; Gabriel,Mateus Eloir; Silva,Teane Milagres Augusto da; Couto,Caroline do; Casagrande,Renata Assis; Medeiros,Diovane dos Santos; Mendes,Ricardo Evandro.
ABSTRACT: Mammary gland neoplasms in cattle are rarely observed in the field veterinary diagnostics routine. Therefore, the objective of this study is to report a metastatic mammary carcinoma in a fourteen-year-old Holstein cow in the state of Santa Catarina, Brazil. The animal was diagnosed by the field veterinarian with clinical mastitis that was unresponsive to treatment, and was euthanized due to the poor prognosis. At the necropsy, multiple yellow, firm, and sometimes friable nodules, ranging from 0.1 to 20cm were observed in all mammary glands, lymph nodes, kidneys, spleen, liver, pancreas, mediastinal lymph nodes, heart, and lungs. The final diagnosis of mammary carcinoma was established through the association of clinical, necropsy,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle diseases; Mammary neoplasia; Metastasis; Chronic mastitis; Cytokeratin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700551

Growth and production of common bean fertilized with biochar
Provedor de dados: 65
Autores: Silva,Isley Cristiellem Bicalho da; Fernandes,Luiz Arnaldo; Colen,Fernando; Sampaio,Regynaldo Arruda.
ABSTRACT: Production of biochar from organic wastes promises to be an interesting source of plant nutrients, thus reducing pressure on natural resources. To assess the effect of biochar prepared from wastes filtration materials on the growth and production of common bean (Phaseolus vulgaris L.), three simultaneous greenhouse experiments were conducted with three different biochar from organic wastes (rice husk, sawdust, and sorghum silage) using as filtration material for swine biofertilizer. In each experiment the treatments consisted of the addition of five different biochar concentrations (0%, 2.5%, 5%, 7.5%, and 10% v/v), arranged in a completely random design, with four repetitions. Application of biochar increased the root dry mass, shoot dry mass,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural wastes; Alternative source of nutrients; Phaseolusvulgaris L.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100152

Absolute quantification of viruses by TaqMan real-time RT-PCR in grapevines
Provedor de dados: 65
Autores: Fajardo,Thor Vinícius Martins; Vanni,Marcos Fernando; Nickel,Osmar.
ABSTRACT: The absolute quantification determines the absolute amount of a targeted nucleic acid expressed as a copy number or concentration. The knowledge of virus concentrations in commercial crops possesses high relevance to ensure a reliable diagnosis. The objective of this study was to perform an absolute quantification of five viruses in infected grapevines (Vitis spp.). Different known amounts of the standard sample (cloned viral cDNA or in vitro transcribed viral RNA) were quantified by TaqMan RT-qPCR. Based on these data, standard curves were generated plotting Ct values (threshold cycle) against the log of the standard sample amount. Infected grapevine samples were evaluated to determine virus titers, which were highly variable. This result may...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: RT-qPCR; GRSPaV; GVA; GVD; GLRaV-3 and -4.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600155

Concentrate intake and performance of dairy calves subjected to programs of supplementary lighting
Provedor de dados: 65
Autores: Almeida,Gledson Luiz Pontes de; Pandorfi,Héliton; Baptista,Fátima; Guiselini,Cristiane; Ferreira,Marcelo de Andrade; Cruz,Vasco Fitas.
ABSTRACT: This research aimed to assess Girolando calves’ concentrate intake and performance when placed in shelters with distinct roofing materials and programs of supplementary lighting during the milk-feeding stage. In order to so, we used a completely randomized design with a 3×3 factorial arrangement, with three replications. Females Girolando calves (n=27) were assigned in individual shelters at random with 3 different roofing materials (fiber cement tile, recycled tile and thatched roofs) and subjected to three lighting programs (12, 16 and 20 hours). No interaction was observed between roofing material and lighting programs, whilst no significant effect (P&gt;0.05) was observed among the roofing materials. The supplementary lighting, by providing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal performance; Dairy cattle; Light duration; Weight gain.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900651

LESS ovariohysterectomy in cats using a new homemade multiport
Provedor de dados: 65
Autores: Costa,Diego da; Libardoni,Renato do Nascimento; Schmitt,Júlia Tramontini; Padilha,Aline Spode; Schulz Júnior,Francisco Jorge; Ataíde,Michelli Westphal de; Menezes,Felipe Barreto; Allievi,Karina; Brun,Mauricio Veloso; Teixeira,Pedro Paulo Maia; Silva,Marco Augusto Machado.
ABSTRACT: The purpose of this study was to assess the use of a homemade multiport for LESS (laparoendoscopic single-site surgery) ovariohysterectomy (OVH) in cats. Intra and postoperative variables of the surgery steps, technical challenges, complications and evolution of surgical time by a surgeon in training were evaluated. Twenty queens were selected for LESS OVH. The multiport device was manufactured of a conical-shaped ethylene polytereftalate (PET) bottle, urethral catheter no. 8, latex balloon no. 11, a 3.5mm and a 6mm laparoscopic trocars. Hemostasis was carried out using bipolar diathermy. Mean total surgical time was 14.54±5.12 minutes. Approach to right and left ovarian pedicles and abdominal access for insertion of the multiport device were the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: OVH; Single-port access; Domestic felines; Endosurgery.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100605

Silvicultural performance of forest species introduced in integrated livestock forest system in Lavras, MG, Brazil
Provedor de dados: 65
Autores: Nieri,Erick Martins; Macedo,Renato Luiz Grisi; Venturin,Nelson; Venturin,Regis Pereira; Pinto Júnior,José Alvim; Melo,Lucas Amaral de.
ABSTRACT: The objective of this study was to evaluate the silvicultural performance of four forest species introduced in a setting for integrated livestock forest (ILF) in a pasture in Lavras, Minas Gerais, Brazil. The species included were the Australian red cedar (seminal and clonal), African mahogany, teak, and guanandi. A split plot scheme with a randomized complete block design comprising four replicates and 48 plants per plot, was used in the following arrangement: (3(3x2) +7x2) m. The evaluation times (12, 18, 31, 36, and 43 months after planting) corresponded to the subplots. Performances of all four species were evaluated on the basis of their survival rate, height (H) and diameter at breast height (DBH). Based on the performance of the species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation; Species testing; Introduction of species.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200301

Pindo Palm fruit yield and its relationship with edaphic factors in natural populations in Rio Grande do Sul
Provedor de dados: 65
Autores: Schlindwein,Gilson; Tonietto,Adilson; Abichequer,André Dabdab; Azambuja,Augusto Cruz de; Lisboa,Bruno Brito; Vargas,Luciano Kayser.
ABSTRACT: The objective of this study was to evaluate the fruit yield of naturally occurring populations of Pindo palms ( Butia odorata ) in different habitats and agricultural ecosystems. Three areas were selected in the municipalities of Barra do Ribeiro, Tapes and Arambaré, all of which are located on the Litoral Médio in the state of Rio Grande do Sul, Brazil. Eleven 25x100m² plots were selected in the aforementioned areas, and fruit yield was evaluated in the 2008 and 2009 seasons. Chemical conditions of the soil in each plot, elevation of terrain, height, and density of the reproductive Pindo palms were also assessed. Data analysis revealed a strong correlation between the edaphic conditions and the yield from the Pindo palms. Tapes Pindo palms...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Butia odorata; Arecaceae; Chemical characteristics of the soil fruit yield; Sustainable management.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200404

Micropropagation of the new apple rootstock ‘G. 814’
Provedor de dados: 65
Autores: Meneguzzi,Aline; Gonçalves,Mayra Juline; Camargo,Samila Silva; Grimaldi,Fernanda; Weber,Gabriela Candido; Rufato,Leo.
ABSTRACT: International breeding programs launched new genetic material of apple rootstocks that in addition to precocity and great yield are resistant to major diseases and soil pests encountered in the largest apple producing regions in Brazil. Given this, there is a necessity for vegetative propagation of these materials for study and possible replacement of existing rootstocks. The objective was to adapt a micropropagation protocol for new apple rootstock ‘G. 814’. In the multiplication phase were evaluated BAP concentrations: 0; 0.5; 1; 2 and 4mg L-1 and in the rooting phase were evaluated IBA concentrations: 0; 0.25; 0.50; 1; 1.5 and 2.5mg L-1. These new results demonstrated that this new rootstock selection can be propagated with this tissue culture...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus sp.; In vitro culture; Plant growth regulators.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600401

Natural antioxidants in the stability of ray liver oil
Provedor de dados: 65
Autores: Navarro-García,Gerardo; Gámez-Meza,Nohemí; Medina-Juárez,Luis Angel; Ortega-García,Jesús; Cota-Quiñones,Elizabeth; Ramirez-Suarez,Juan Carlos.
ABSTRACT: The effect of the addition of natural antioxidants on oxidative stability of ray ( Rhinoptera bonasus) liver oil was evaluated. Different concentrations of rosemary extract, α-tocopherol, and caffeic acid (w/w) were added to the oil. Afterwards, concentration of each antioxidant that gave the highest stability was used in an accelerated stability test (Schaal method). The protective effect was established by the retention in the oil of fatty acids eicosapentaenoic (EPA) and docosahexaenoic (DHA), and concentration of volatile compounds. The best concentrations were: 2.5% of rosemary extract, 0.5% of α-tocopherol, and 0.06% of caffeic acid. Rosemary extract showed to be the product with the greatest ability to retard oxidation, followed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ray liver oil; Natural antioxidants; EPA; DHA; Volatile compounds.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100752

Simulation of defoliation caused by Black Sigatoka in the yield and quality of banana 'Nanica ' fruits
Provedor de dados: 65
Autores: Lima,Juliana Domingues; Florencio,Jessica Andrade; Moraes,Wilson da Silva; Silva,Silvia Helena Modenese Gorla da; Rozane,Danilo Eduardo; Gomes,Eduardo Nardini.
ABSTRACT: Defoliation caused by Black Sigatoka in yield and quality of banana 'Nanica' was stimulated in this study. A completely randomized 2x8 factorial design with six repetitions was used, in which period of bunch formation and number of leaves at flowering were established as factors. Plants for defoliation were selected on 04/05/2013 (Period 1), and on 07/01/2014 (Period 2). Six to to 13 leaves remained per plant by removing those with more than 50% of blade with injury or senescence. More appropriate climatic conditions before and after flowering, promoted greater mass accumulation in the bunch in Period 2. The increased number of leaves at flowering increased the length of the fruit and the mass of 4th hand, as well as the bunch mass and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp.; Bunch mass; Fruit size; Source/sink ratio.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100152

Caudal vena cava thrombosis in a dairy cow (Bos taurus) in Argentina
Provedor de dados: 65
Autores: Schild,Carlos; Armendano,Joaquín Ignacio; Liboreiro,Matías; Bresky,Florencia; Morrell,Eleonora; Odriozola,Ernesto; Cantón,Germán.
ABSTRACT: Caudal vena cava thrombosis (CVCT) is an acute disease secondary to ruminal lactic acidosis and rumenitis with fatal outcome in cattle fed with a high-grain diet. The aim of this paper is to describe CVCT in an adult Holstein cow from a herd in Balcarce, Buenos Aires, Argentina. Clinical signs included dyspnea, weakness, recumbence, and hemoptysis, followed by death in 3.5 days. Important necropsy findings included multiple hepatic abscesses, a septic thrombus (4.0cm x 2.0cm) in the vena cava adjacent to the liver, and a 15cm hematoma in the right lung. Histological lesions observed in the pulmonary parenchyma included suppurative pneumonia with embolic bacterial colonies and severe interstitial fibroplasia. Dissociation and degeneration of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Holstein; Thrombosis; Vena cava; Hemoptysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600551

Complementing firewood with alternative energy sources in Rio Pardo Watershed, Brazil
Provedor de dados: 65
Autores: Dessbesell,Luana; Farias,Jorge Antonio de; Roesch,Fábio.
ABSTRACT: Wood is the primary energy source for grains and Tobacco drying in the Rio Pardo Watershed (RPW). The amount of firewood produced in the RPW is not enough to supply the demand. Recently, an automatized supply system was introduced in the region enabling the use of sawdust and pellets. In this context, this study aims to compare firewood, sawdust and pellets as energy sources for Tobacco curing in air-forced curing systems. Energetic density was used to estimate the biomass consumption in Tobacco curing. The consumption of biomass is lower for pellet, followed by firewood and sawdust. Pellets and sawdust could complement firewood in the region; however, research is necessary to ascertain the economic feasibility.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tobacco; Pellet; Sawdust; Energetic density.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900301

Syntomopus parisii and Leptomeraporus sp. parasitizing Melanagromyza sojae in Brazil
Provedor de dados: 65
Autores: Salgado-Neto,Geraldo; Palma,Janine; Costa,Valmir Antonio.
ABSTRACT: This note is the first report of Syntomopus parisii De Santis 1976 and Leptomeraporus sp. (Hymenoptera, Pteromalidae) simultaneously parasitizing Melanagromyza sojae Zehntner, 1900 (Diptera, Agromyzidae) in Brazil. The Pteromalidae parasitoids are natural enemies of stem miner flies, opening perspectives for biological control of soybean stem miner fly.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Dipterous parasitoids; Miner fly; Stem miner fly.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400204

Weed control and crop selectivity of post-emergence herbicides in common beans
Provedor de dados: 65
Autores: Marchioretto,Lucas De Ross; Dal Magro,Taísa.
ABSTRACT: There are few options of wide spectrum selective herbicides registered for post-emergence weed control in common beans crop. The experiment aimed to test crop selectivity and weed control of post-emergence herbicides on common beans. Weed control, injury and grain yield were evaluated. Treatments consisted on: cloransulam-methyl, imazethapyr, fomesafen, bentazon and diclosulam isolated and tank-mixed with clethodim; imazamox+bentazon, fomesafen+fluazifop, clethodim; cloransulam+bentazon and imazethapyr+bentazon. Treatments were tested on the cultivars 'ANfc 9', 'IPR Uirapuru' and 'BRS Estilo'. The high-yielding treatments to the cultivar 'ANfc 9' were fomesafen alone and tank-mixed with clethodim or fluazifop, cloransulam and diclosulam...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 'ANfc 9'; 'BRS Estilo'; Chemical control; 'IPR Uirapuru'; Phaseolus vulgaris.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300407

Potential impacts of using sewage sludge biochar on the growth of plant forest seedlings
Provedor de dados: 65
Autores: Silva,Maria Isidoria; Mackowiak,Cheryl; Minogue,Patrick; Reis,Alessandra Ferreira; Moline,Ederlon Flavio da Veiga.
ABSTRACT: Sewage sludge has long been successfully used in the production of nursery plants; however, some restriction may apply due to its high pathogenic characteristics. The process of charring the organic waste significantly reduces that undesired component and may be as effective as the non-charred residue. The aim of this study was to evaluate the effect of sewage sludge biochar on the growth and morphological traits of eucalyptus ( Eucalyptus grandis L.) seedlings, and compare results with those observed when using uncharred sewage sludge. Treatments were arranged in a completely randomized design, in a 2 x 2 factorial scheme, with four replications. Charred and non-charred sewage sludge were tested with and without NPK addition. A control treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosolids; Pyrogenic carbon; Environmental management.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100401

Ovicidal activity of succinic acid isolated from sisal waste (Agave sisalana) against gastrointestinal nematodes of goats
Provedor de dados: 65
Autores: Santos,Nathália Silva de Souza; Santos,Jener David Gonçalves; Santos,Francianne Oliveira; Serra,Taiane Menezes; Lima,Hélimar Gonçalves de; Botura,Mariana Borges; Branco,Alexsandro; Batatinha,Maria José Moreira.
ABSTRACT: This study was conducted to evaluate the in vitro anthelmintic activity of the succinic acid (SA) isolated from sisal waste against gastrointestinal nematodes of goats, using the egg hatching and larvae motility assays. In addition, potential cytotoxicity of SA on Vero cell cultures was investigated by means of MTT (3-4,5-dimethylthiazol-2-yl, 2,5diphenyltetrazolium bromide) test. The SA induced a significant inhibition of egg hatching (P&lt;0.05) at all concentrations tested (60 to 250µg mL-1), and the concentrations to inhibit 50% (EC50) and 90% (EC90) values (mean ± standard deviation) were 90.3±2.8 and 130.6±3.5µg mL-1, respectively. The SA has not shown larvicidal activity. The SA was less toxic to the Vero cells, with the mean percentage of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agave sisalana; Sisal waste; Succinic acid; Anthelmintic; Goats.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800502

Genotypic value in hybrid progenies of Panicum maximum Jacq.
Provedor de dados: 65
Autores: Braz,Thiago Gomes dos Santos; Martuscello,Janaina Azevedo; Jank,Liana; Fonseca,Dilermando Miranda da; Resende,Marcos Deon Vilela; Evaristo,Anderson Barbosa.
ABSTRACT:  Genetic breeding of forage plants has increasingly contributed to the release of more productive plants. In this regard, evaluating the genotypic value is essential when aiming to rank genotypes based on the mean free of environmental factors. Therefore, this study aimed to predict the genotypic value of agronomic and nutritive value characters of three progenies of Panicum maximum. Hybrids were evaluated in a clonal test in an incomplete-randomized design with three treatments (progenies 1, 2, and 3) and two replications (clones). Six harvests were performed at 25cm from the ground level throughout one year. Progeny 2 provided better results for total and leaf dry mass yield, regrowth, and height, and lower incidence of leaf spot. Progenies 1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bipolaris maydis; Chemical composition; Leaf biomass; ‘Mombaça’; ‘Tanzania’.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900401

Economic profitability in conventional and irrigated coffee production systems in three municipalities in the Marilia region of São Paulo, Brazil
Provedor de dados: 65
Autores: Turco,Patrícia Helena Nogueira; Esperancini,Maura Seiko Tsutsui; Bueno,Osmar de Carvalho; Oliveira,Marli Dias Mascarenhas.
ABSTRACT: The objective of this study was to evaluate the economic benefit of coffee cultivation, with a focus on the distinction between conventional and irrigated coffee production systems. For the development of the study, the various productive systems were delineated from the data provided by a sample of producers to generate a matrix of average technical coefficients. The methodology used to estimate the operating cost of production is the one used by the Instituto de Economia Agrícola (IEA). Profitability indicators were also evaluated. Results indicated that the effective operational cost (EOC) incurred in the irrigated production system is higher than that in the conventional system. As regards the cost composition, in the conventional coffee...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Production cost; Regional coffee; Economic comparative.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100931

Bacterial culture and antibiotic sensitivity from the ocular conjunctiva of horses
Provedor de dados: 65
Autores: Ferreira,Ana Raquel de Araújo; Santana,Alana Fontenele; Almeida,Ana Carolina da Veiga Rodarte de; Sousa,Renan Fiel; Perecmanis,Simone; Galera,Paula Diniz.
ABSTRACT: The aim of this study was to identify the conjunctival bacterial flora of healthy horses in Brasilia (Distrito Federal, Brazil), and to evaluate the antimicrobial susceptibility of the isolated strains. We examined 200 eyes of 100 healthy adult horses without any eye problems, belonging to the 1st Regiment of the Cavalry Guard (RCG) of the Brazilian Army in Brasilia. Samples were collected from the inferior conjunctival fornix of both eyes. Drug sensitivity test was performed with the antibiotics gentamicin (10µg), tobramycin (10µg), chloramphenicol (30µg) and ciprofloxacin (5µg). Of the 200 samples collected, 131 (65.5%) were considered positive for bacterial growth. A total of 208 bacterial strains belonging to 19 genera were isolated, where...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eye; Horse; Bacterial flora; Antibiogram.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600453

Chemical composition of essential oil extracted from leaves of  Campomanesia adamantium subjected to different hydrodistillation times
Provedor de dados: 65
Autores: Oliveira,Juliana Dantas de; Alves,Daniely Karen Matias; Miranda,Mayker Lazaro Dantas; Alves,José Milton; Xavier,Marcelo Nogueira; Cazal,Cristiane de Melo; Alves,Cassia Cristina Fernandes.
ABSTRACT:  Campomanesia adamantium is a native fruit species of the Cerrado and is used in food and medicines and as bee pasture. The chemical composition of essential oils obtained from plants of the same species have varying constituent proportions due to the influence of extractive factors, environmental, genetic and ontogenetic. This study aimed to identify the influence of hydrodistillation time on the content and chemical composition of essential oil extracted from the leaves of C. adamantium . Treatments consisted of five extraction times (1, 2, 3, 4, and 5h) using Clevenger with five replications in a completely randomized design. It was observed that after two hours of hydrodistillation, the essential oil content remains constant. Regarding the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Essential oil; Hydrodistillation time; Sesquiterpenes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100751

Dermatophilosis in sheep raised under rotational grazing systems on irrigated pastures in the Brazilian semiarid region
Provedor de dados: 65
Autores: Vieira,Vanessa Diniz; Correa,Franklin Riet; Vilela,Vinícius Longo Ribeiro; Medeiros,Márcia Alves de; Morais,Dayana Firmino de; Santos,Antonielson dos; Feitosa,Thaís Ferreira; Almeida Neto,João Leite de.
ABSTRACT:  Seventeen outbreaks of dermatophilosis are reported from three farms affecting Santa Inês and Santa Inês x Dorper sheep that were reared in irrigated areas with rotational grazing at a stocking rate of 50 to 100 sheep per hectare, in the Brazilian semiarid region. Most outbreaks occurred after rains and affected sheep of different ages, with morbidity rates of 0.77% to 31%. Clinical signs were dermatitis with crusts that stood out easily and left areas of alopecia. Dermatophilus congolensis was isolated in cultures in 5% sheep blood agar by means of Haalstra’s method. Histologically, the epidermis showed extensive multifocal areas of ortho and parakeratotic hyperkeratosis with intracorneal microabscesses and presence of D. congolensis. Sheep...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatitis; Dermatophilus congolensis; Environment; High stocking rate; Management.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800457

Sprout density for the production of organic mini-cabbage from mother plant regrowth
Provedor de dados: 65
Autores: Souza,Jacimar Luis de; Guarçoni,Rogério Carvalho; Favarato,Luiz Fernando; Angeletti,Maria da Penha; Bahiense,Douglas Vianna; Ribeiro,Camila de Souza.
ABSTRACT: The method of producing organic mini-cabbages from regrowth of mother-plant was initiated at the Unidade de Referência em Agroecologia of the Incaper in 2013, possibly acting as an efficient alternative for the obtainment of cabbages with a more adequate average weight for the desires of the modern consumer. The aim of this study was to define sprout density in the mother plant, which allows better productivity and commercial standards for organic mini-cabbages. The experiment was developed during the period from September to November 2015, using the F1 Shinsei hybrid, in a design with randomized blocks, with five replications. Sprout density was determined following thinning, constituting the following treatments: two, three, four, five and six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea; Var. capitata; Organic cultivation; Mini-vegetables; Plant density.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900201

Energy balance of biodiesel production from canola
Provedor de dados: 65
Autores: Silva,Luis Felipe Lima e; Gonçalves,Wilson Magela; Maluf,Wilson Roberto; Resende,Luciane Vilela; Sarmiento,Christiany Mattioli; Licursi,Vicente; Moretto,Paulo.
ABSTRACT: The aim of the present study was to estimate the energy balance (output/input ratio) of the canola crop for biodiesel production, under Brazilian conditions. Fossil energy expended in the production of 600kg of oil per hectare was 7,146,537kcal. The estimated energy yield per hectare was 9,930,000kcal from the production of 1,500kg ha-1 of seeds (40% oil and 60% oil cake), which resulted in an energy balance of 1.39. Results indicated the viability of biofuel production from canola, but also showed the need to improve the technology used to increase the energy and economic balance ratios.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica napus L. var. oleifera; Biofuel; Energy sustainability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200932