Consulta: subjectFacets:"Dengue"
Registros recuperados: 54
Data/hora: 18/06/2024 04:57:20

Insecticidal activity of Leptodactylus knudseni andPhyllomedusa vaillantii crude skin secretions against the mosquitoes Anopheles darlingi andAedes aegypti
Provedor de dados: 80
Autores: Trindade,Frances TT; Soares,Ângela A; Moura,Andréa A de; Rego,Tiago B; Soares,Andreimar M; Stábeli,Rodrigo G; Calderon,Leonardo A; Almeida e Silva,Alexandre de.
Background Mosquitoes are important vectors of several diseases, including malaria and dengue, and control measures are mostly performed using chemical insecticides. Unfortunately, mosquito resistance to commonly applied insecticides is widespread. Therefore, a prospection for new molecules with insecticidal activity based on Amazon biodiversity using the anuransLeptodactylus knudseni andPhyllomedusa vaillantii was performed against the mosquito speciesAnopheles darlingi and Aedes aegypti.Methods The granular secretion from anuran skin was obtained by manual stimulation, and lethal concentrations (LCs) for larvicidal and adulticidal tests were calculated using concentrations from 1-100 ppm. The skin secretions from the anuran species tested caused...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vector control; Anuran amphibians; Dengue; Malaria.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992014000200334

Neurological complications and death in children with dengue virus infection: report of two cases
Provedor de dados: 80
Autores: Osnaya-Romero,Neydi; Perez-Guille,Maria-Gabriela; Andrade-García,Sandra; Gonzalez-Vargas,Erika; Borgaro-Payro,Rebeca; Villagomez-Martinez,Sandra; Ortega-Maldonado,José de Jesús; Arredondo-García,Jose Luis.
Abstract  Background Dengue virus infection can have different complications; the best known is hemorrhagic dengue fever. However, other effects such as neurological disorders may endanger the lives of patients. Dengue neurological manifestations can be confused with encephalitis symptoms and can lead to cerebral edema and death. Therefore, we consider important in the endemic areas to take into account the diagnosis of dengue encephalitis in patients with neurological disorders, and to request the determination of serology in cerebrospinal fluid for the NS1 antigen test.  Case presentation We present the cases of two patients from the state of Morelos, Mexico, with 17 and 14 years of age. Both cases presented a rapid evolution characterized by fever,...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Dengue; Dengue virus; Neurological disorders; Death; Children.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100505

Antiviral activities of extracts and phenolic components of two Spondias species against dengue virus
Provedor de dados: 80
Autores: Silva,Ara; Morais,SM; Marques,MMM; Lima,DM; Santos,SCC; Almeida,RR; Vieira,IGP; Guedes,MIF.
In recent years, the search for natural plant products to fight viral diseases has been increasing. In this work, two Spondias species, namely S. mombin and S. tuberosa, found in Ceará state (Brazil), and their main phenolic components were evaluated against dengue virus. In vitro antiviral tests were performed against type-2 dengue virus by the MTT method and standard cytopathic effect reduction assay in C6/36 cells. Cytotoxicity was also evaluated by MTT. The presence of phenolic compounds quercetin, rutin, and ellagic acid in plant extracts was characterized by HPLC analysis. Both Spondias species extracts and components were nontoxic to the cells whereas rutin and quercetin displayed relevant antiviral activity with IC50 of 362.68 µg/mL and 500 µg/mL,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Natural products; Phenols; Dengue; Antiviral agents.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000400007

Occurrence of Toxorhynchites guadeloupensis (Dyar &amp;amp; Knab) in oviposition trap of Aedes aegypti (L.) (Diptera: Culicidae)
Provedor de dados: 82
Autores: Honório,Nildimar A.; Barros,Fábio S.M. de; Tsouris,Pantelis; Rosa-Freitas,Maria G.
Toxorhynchites guadeloupensis (Dyar &amp;amp; Knab), a poorly known mosquito species, was observed preying upon Aedes aegypti (L.) larvae, in an oviposition trap placed for routine dengue entomological surveillance, during 2003-2004 in the urban area of Boa Vista, Roraima, Brazil. This is the first report for Tx. guadeloupensis using Ae. aegypti oviposition traps as breeding places. This finding may have important consequences in the epidemiology and local dengue control since Ae. aegypti density is a basic variable in dengue prediction. Whether predation of Ae aegypti by Tx. guadeloupensis in the Amazon is of significance, is a question to be examined. Also, larval predation may be a cause for underestimation of the actual Ae aegypti numbers. Together...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Predation; Dengue; Prediction; Control; Immature form.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000500025

Evaluation of the sticky MosquiTRAP™ for detecting Aedes (Stegomyia) aegypti (L.) (Diptera: Culicidae) during the dry season in Belo Horizonte, Minas Gerais, Brazil
Provedor de dados: 82
Autores: Gama,Renata A.; Silva,Eric M.; Silva,Ivoneide M.; Resende,Marcelo C.; Eiras,Álvaro E.
MosquiTRAP™ is a sticky trap specifically designed to capture gravid females of Aedes aegypti (L.) and allows the identification of the mosquito in the field during the inspection of the trap. This study aims to compare this sticky trap to larval and ovitrap surveys for field monitoring of A. aegypti during the dry season. The study was conducted from March to June of 2003 in 20 blocks of the district of Itapoã, Belo Horizonte, MG. The traps were monitored every week while the larval survey was conducted on a monthly basis. The larval index: Premise Index (PI) and Breteau Index (BI) had equal values throughout the experiment (1.72 in the first two months and zero in the last two). The container index (CI) during the first two months was 0.09 and 0.1%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monitoring; Dengue; Mosquito.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000200018

Efeito da qualidade da água no ciclo de vida e na atração para oviposição de Aedes aegypti (L.) (Diptera: Culicidae)
Provedor de dados: 82
Autores: Beserra,Eduardo B; Fernandes,Carlos R M; Sousa,José T de; Freitas,Eraldo M de; Santos,Keliana D.
The present research aimed at evaluating the influence of the water quality in the life cycle and attraction of Aedes aegypti (L.) females to oviposit using different sources of water (raw sewage, effluent of UASB reactor, effluent of polishing lagoon, effluent of anaerobic filter, rain water and de-chlorinated water). The immature development time and survivorship were evaluated on a daily basis in two distinct feeding systems (with and without food). The quality of the water was shown to affect the egg and larval stages, but not the pupal or the adult. In the absence of food, no development was observed in rain water and de-chlorinated water. Immature development was faster in water sources from raw sewage, although with the lowest survivorship (37.3%)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vector; Dengue; Aquatic development; Biology.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600026

Does native bromeliads represent important breeding sites for Aedes aegypti (L.) (Diptera: Culicidae) in urbanized areas?
Provedor de dados: 82
Autores: Santos,CB; Leite,GR; Falqueto,A.
This study evaluates the importance of native bromeliads growing on rocky outcrops interspersed with urbanized areas as breeding sites for the Aedes aegypti (L.) in Vitória, state of Espírito Santo, Brazil. Oviposition traps were installed in backyards of houses in two separate zones. In the first zone houses were up to 50 m away from the rocky outcrops, while in the second zone they were at least at 200 m from the rocky outcrops. Aedes aegypti was significantly more abundant in the latter zone. The finding was that rocky outcrops with native bromeliads, even with the greater availability of potential breeding sites, do not play an important role as breeding sites for A. aegypti. This conclusion supports the hypothesis that the macrobiota of native...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Natural control; Brazil.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000200019

Ocorrência de Aedes (Stegomyia) albopictus (Skuse) em área urbana do estado do Tocantins
Provedor de dados: 82
Autores: Balestra,Rafael A.M.; Pereira,Rosany K. de O.; Ribeiro,Maria J. de S.; Silva,Júlia dos S.; Alencar,Jeronimo.
Pela primeira vez é registrada a presença do Aedes albopictus (Skuse) em Tocantins, em área urbana da cidade de Mateiros. As coletas foram realizadas em criadouros de formas imaturas (caixas d’água, cisternas, tanques, ocos de árvores, lixo, pneus, etc). A presença de Ae. albopictus em área urbana representa um risco potencial do inter-relacionamento dessa espécie de mosquito com a população.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Distribuição geográfica.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000200020

Abundância e agregação de ovos de Aedes aegypti L. e Aedes albopictus (Skuse) (Diptera: Culicidae) no norte e noroeste do Paraná
Provedor de dados: 82
Autores: Fantinatti,Elaine C.S.; Duque,Jonny E.L.; Silva,Allan M.; Navarro-Silva,Mario A.
Avaliou-se a abundância e agregação dos ovos de Aedes aegypti L. e Aedes albopictus Skuse em Cambé, Ibiporã, Jacarezinho, Maringá e Paranavaí, PR, utilizando-se armadilhas de oviposição. De 225 armadilhas instaladas, 100 registraram-se positivas para ovos. Coletaram-se 4140 ovos, demonstrando distribuição altamente agregada. Ambas as espécies foram encontradas em Cambé, Jacarezinho, Maringá e Paranavaí. Ae. albopictus não foi detectado em Ibiporã, porém onde esteve presente foi menos abundante. A relação entre sexos aproximou-se de 1:1, para Ae. aegypti. Na comparação dos números de adultos coletados entre as duas espécies, obteve-se correlação negativa nas amostras de Maringá e Cambé, o que foi atribuído à sazonalidade dessas populações. A coexistência...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecologia de vetores; Armadilha de oviposição; Dengue; Espécie invasora; Mosquito.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000600020

Molecular characterization of Aedes aegypti (L.) (Diptera: Culicidae) of Easter Island based on analysis of the mitochondrial ND4 gene
Provedor de dados: 92
Autores: Núñez,Claudia Andrea; González,Christian Raúl; Obreque,Víctor; Riquelme,Brenda; Reyes,Carolina; Rojas,Mabel.
ABSTRACT Aedes aegypti mosquitoes are the main vector of viruses Dengue, Zika and Chikungunya. Shortly after the first report of the dengue vector Ae. aegypti in Easter Island (Rapa Nui) in late 2000, the first disease outbreak dengue occurred. Viral serotyping during the 2002 outbreak revealed a close relationship with Pacific DENV-1 genotype IV viruses, supporting the idea that the virus most likely originated in Tahiti. Mitochondrial NADH dehydrogenase subunit 4 (ND4) DNA sequences generated from 68 specimens of Ae. aegypti from Easter Island reporting a unique finding of a single maternal lineage of Ae. aegypti on Easter Island.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Dengue; Haplotypes; Rapa Nui.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262016000200186

Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae)
Provedor de dados: 92
Autores: Costa,Ethiene Arruda Pedrosa de Almeida; Santos,Eloína Maria de Mendonça; Correia,Juliana Cavalcanti; Albuquerque,Cleide Maria Ribeiro de.
In short space of time increase in temperature and rainfall can affect vector populations and, consequently, the diseases for them transmitted. The present study analyzed the effect of small temperature and humidity variations on the fecundity, fertility and survival of Aedes aegypti. These parameters were analyzed using individual females at temperatures ranging from 23 to 27 °C (mean 25 °C); 28 to 32 °C (mean 30 °C) and 33 to 37 °C (mean 35 ºC) associated to 60±8% and 80±6% relative humidity. Females responded to an increase in temperature by reducing egg production, oviposition time and changing oviposition patterns. At 25 ºC and 80% relative humidity, females survived two-fold more and produced 40% more eggs when compared to those kept at 35 ºC and 80%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate changes; Dengue; Fecundity; Fertility; Mosquito.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300021

Oviposition of Aedes aegypti Linnaeus, 1762 and Aedes albopictus Skuse, 1894 (Diptera: Culicidae) under laboratory and field conditions using ovitraps associated to different control agents, Manaus, Amazonas, Brazil
Provedor de dados: 92
Autores: Silva,William Ribeiro da; Soares-da-Silva,Joelma; Ferreira,Francisco Augusto da Silva; Rodrigues,Iléa Brandão; Tadei,Wanderli Pedro; Zequi,João Antonio Cyrino.
ABSTRACT The aim of this study was to analyze the effectiveness of different control agents of Aedes aegypti and Aedes albopictus associated with ovitraps under laboratory and field conditions. Five treatments were used: grass infusion + Bacillus thuringiensis israelensis (gI + Bti), grass infusion + Saccharopolyspora spinosa (gI + Ss), grass infusion + Pyriproxyfen (gI + P), distilled water + Toxorhynchites haemorrhoidalis (dW + Th), and grass infusion (gI) (control). The highest mean number of eggs of both species were obtained with grass infusion in the laboratory. Among control agents, the lowest mean of A. aegypti eggs occurred with gI + Ss and the lowest mean of A. albopictus eggs occurred with dW + Th. There was no difference between treatments in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chikungunya; Control; Dengue; Insecticides; Zika.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262018000400304

Spatial evaluation of larvae of Culicidae (Diptera) from different breeding sites: application of a geospatial method and implications for vector control
Provedor de dados: 92
Autores: Piovezan,Rafael; Azevedo,Thiago Salomão de; Von Zuben,Cláudio José.
Spatial evaluation of Culicidae (Diptera) larvae from different breeding sites: application of a geospatial method and implications for vector control. This study investigates the spatial distribution of urban Culicidae and informs entomological monitoring of species that use artificial containers as larval habitats. Collections of mosquito larvae were conducted in the São Paulo State municipality of Santa Bárbara d' Oeste between 2004 and 2006 during house-to-house visits. A total of 1,891 samples and nine different species were sampled. Species distribution was assessed using the kriging statistical method by extrapolating municipal administrative divisions. The sampling method followed the norms of the municipal health services of the Ministry of Health...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aedes aegypti; Dengue; Mosquitoes; Spatial analysis; Vector control.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000300016

Effects of temephos resistance on life history traits of Aedes albopictus (Skuse) (Diptera: Culicidae), a vector of arboviruses
Provedor de dados: 92
Autores: Rahim,Junaid; Ahmad,Abu Hassan; Maimusa,Alhaji Hamisu.
Abstract The effects of temephos resistance on the fitness cost of the wild populations of Aedes albopictus was evaluated. The larvae of two wild populations were exposed to the diagnostic dose of 0.02 mg and 0.012 mg/L. The larvae which survived after the 24 h exposure to diagnostic dose were considered as resistant and F1 generations were chosen for the comparisons of fitness parameters with the control strain, which includes larval developmental time, adult longevity, fecundity, wing length and hatchability. We found that temephos resistance had negative effects on larval developmental time which was longer for Gelugor strain among the populations with the median range of 10 days and a shorter longevity was observed with the median range of 13 days for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Temephos; Insecticides resistance; Fitness cost; Aedes albopictus; Dengue.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000400312

Isolation of Bacillus thuringiensis from the state of Amazonas, in Brazil, and screening against Aedes aegypti (Diptera, Culicidae)
Provedor de dados: 92
Autores: Soares-da-Silva,Joelma; Pinheiro,Valéria Cristina Soares; Litaiff-Abreu,Eleilza; Polanczyk,Ricardo Antonio; Tadei,Wanderli Pedro.
We investigated the use of Bacillus thuringiensis isolated in the state of Amazonas, in Brazil, for the biological control of the dengue vector Aedes aegypti. From 25 soil samples collected in nine municipalities, 484 bacterial colonies were obtained, 57 (11.78%) of which were identified as B. thuringiensis. Six isolates, IBt-03, IBt-06, IBt-07, IBt-28, IBt-30, and BtAM-27 showed insecticidal activity, and only BtAM-27 presents the five genes investigated cry4Aa, cry4Ba, cry10Aa, cry11Aa, and cry11Ba. The IBt-07 and IBt- 28, with lower LC50 values, showed equal toxicity compared to the standards. The isolates of B. thuringiensisfrom Amazonas constitute potential new means of biological control for A. aegypti, because of their larvicidal activity and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian; Bioinsecticide; Dengue; Vector.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000100001

Contrasting patterns of insecticide resistance and knockdown resistance (kdr) in Aedes aegypti populations from Jacarezinho (Brazil) after a Dengue Outbreak
Provedor de dados: 92
Autores: Aguirre-Obando,Oscar Alexander; Pietrobon,Anna Julia; Bona,Ana Caroline Dalla; Navarro-Silva,Mário Antônio.
ABSTRACT After a dengue outbreak, the knowledge on the extent, distribution and mechanisms of insecticide resistance is essential for successful insecticide-based dengue control interventions. Therefore, we evaluated the potential changes to insecticide resistance in natural Aedes aegypti populations to Organophosphates (OP) and Pyrethroids (PY) after chemical vector control interventions. After a Dengue outbreak in 2010, A. aegypti mosquitoes from the urban area of Jacarezinho (Paraná, Brazil) were collected in 2011 and 2012. Insecticide resistance to OP Temephos was assessed in 2011 and 2012 by dose–response bioassays adopting WHO-based protocols. Additionally, in both sampling, PY resistance was also investigated by the Val1016Ile mutation genotyping....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioassays; Dengue; Insecticide resistance; Knockdown resistance; Pyrethroids; Temephos.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262016000100094

Spatial distribution of Culicidae (Diptera) larvae, and its implications for Public Health, in five areas of the Atlantic Forest biome, State of São Paulo, Brazil
Provedor de dados: 92
Autores: Piovezan,Rafael; Acorinthe,João Paulo Oliveira; Souza,Jonas Henrique Teixeira de; Visockas,Alexandre; Azevedo,Thiago Salomão de; Zuben,Cláudio José Von.
ABSTRACT In view of the adaptive ability of mosquitoes and their role in the transport of infective agents, entomological surveys undertaken in transitional environments are very important for the determination of the risk they represent for Public Health. Among the principal vectors of the infectious agents involved in the occurrence of important arboviruses, such as dengue, for example, are the Culicidae-insects capable of installing themselves in the urban nuclei, which exist within areas containing vestigial forests. This present study conducted a survey of mosquito species by means of traps to catch their larvae installed in five rural areas within the Atlantic Forest domain and containing its vestigial vegetation in the municipality of Santa Bárbara...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aedes aegypti; Aedes albopictus; Dengue; Entomological surveillance; Spatial analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000200123

Actividad larvicida de extractos etanólicos de Tabernaemontana cymosa y Trichilia hirta sobre larvas de estadio III y IV de Aedes aegypti (Diptera: Culicidae)
Provedor de dados: 98
Autores: Díaz Castillo,Fredyc; Morelos Cardona,Sandra Marcela; Carrascal Medina,Moisés; Pájaro González,Yina; Gómez Estrada,Harold.
Introducción: el mosquito Aedes aegypti es el principal vector de los virus del dengue y la fiebre amarilla. Una de las formas actuales para combatir estas enfermedades es el control del vector. Sin embargo, los problemas causados por los insecticidas sintéticos y la resistencia adquirida por los mosquitos, hacen cada vez más difícil esta lucha. Las plantas constituyen una fuente alternativa al uso de insecticidas sintéticos. Objetivos: evaluar la actividad larvicida para el mosquito Aedes aegypti, de los extractos etanólicos y fracciones activas, de diferentes órganos vegetales de las especies Trichilia hirta L. y Tabernaemontana cymosa Jacq. Métodos: en este estudio se utilizaron larvas de Aedes aegypti en estadios III y IV. Los extractos etanólicos...
Tipo: Journal article
Palavras-chave: Resistencia a larvicidas; Dengue; Tabernaemontana cymosa; Trichilia hirta.
Ano: 2012
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962012000300006

The veterinarian and dengue: its growing and current interface
Provedor de dados: 195
Autores: Silva, Camila Sloboda Pacheco da.
Dengue is one of the most important arboviral diseases thataffect humans and is a serious public health problem in theworld. From this point of view, this viral systemic disease is alsoa concern for veterinarians. The objective of this study was toinvestigate the fundamentals and origins of the relationshipbetween veterinary medicine and arboviral diseases suchas dengue. It is first inferred that the power of influenceof veterinarians encompasses monitoring and analysis ofepidemiological indicators. Additionally, it is concluded thatveterinarians, whether linked or not to the Dengue ControlProgram (DCP), have an important responsibility in generatingprevention proposals against dengue, chikungunya, and zika.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Veterinarian; Dengue; Preventive actions Médico-veterinário; Dengue; Ação preventiva.
Ano: 2016
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/34685

Efeito larvicida do extrato das folhas de nim (Azadirachta indica) no biocontrole do mosquito Aedes aegypti na região de São Cristóvão-SE
Provedor de dados: 195
Autores: Mendonça, Valéria Melo; Santos, Danielle Pereira; Oliveira, Jessica Raville Pimentel.
O presente trabalho avaliou a utilização do extrato aquoso de folhas frescas de Nim (Azadirachta indica) no combate as larvas do Aedes aegypti no município de São Cristóvão-SE. Os experimentos foram conduzidos nos laboratório de Entomologia da Universidade Federal de Sergipe (UFS) e Biologia do Instituto Federal de Sergipe (IFS) - Campus de São Cristóvão no período de janeiro a fevereiro de 2013. Para a produção do extrato aquoso a 10% foram coletadas somente as folhas de Nim, sendo utilizadas 25g de folhas por 250 ml de água comum, que foram trituradas em liquidificador e após período de descanso de 12 horas a solução foi filtrada em uma peneira e armazenada em recipiente de vidro a temperatura ambiente, sendo utilizada de imediato no experimento. Foram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nim; Dengue; Larvicida.
Ano: 2015
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/25311

Atividade larvicida de extratos de Diplodia pinea frente à Aedes aegypti.
Provedor de dados: 119
Autores: MOURA, P. F.; BETIM, F. C. M.; OLIVEIRA, C. F. de; DIAS, J. de F. G.; MONTRUCCHIO, D. P.; MIGUEL, O. G.; AUER, C. G.; MIGUEL, M. D.
Inúmeros metabólitos primários e secundários provenientes de fungos tem-se destacado na pesquisa devido o potencial biológico de suas moléculas, com aplicação direta na área da saúde. A dengue é uma patologia transmitida por um vetor, o mosquito Aedes aegypti, e possui grande relevância epidemiológica em diversos países, incluindo o Brasil. Como estratégias do Ministério da Saúde para o combate e controle da dengue emprega-se o uso de inseticidas, eliminação de criadouros e campanhas de conscientização. O uso de compostos inseticidas tem mecanismo de ação sobre o mosquito A. aegypti e suas larvas. Neste contexto e levando em consideração que larvicidas de origem natural, em sua maior parte, não causam impactos tão severos ao meio ambiente e à saúde humana,...
Tipo: Artigo de periódico
Palavras-chave: Metabólitos secundários; Fungus; Vector; Fungo; Vetor; Inseticida; Artêmia Salina; Dengue; Insecticides; Secondary metabolites.
Ano: 2021
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1136260

Avaliação adulticida de derivados semi-sintéticos do dilapiol em Aedes aegypti.
Provedor de dados: 119
Autores: PINTO, A. C. da S.; TADEI, W. P.; NOGUEIRA, K. L.; POHLIT, A. M.; CHAVES, F. C. M.
Visando uma contribuição no combate ao mosquito Aedes aegypti na região, o presente trabalho estuda novos compostos que tenham ação inseticida contra vetores de doenças da Região.
Tipo: Resumo em anais e proceedings
Palavras-chave: Isodilapiol; Derivados sintéticos; Inseticida; Dengue.
Ano: 2009
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1163378

Controle de larvas de Aedes aegypti através da utilização de Bacillus thuringiensis em São Sebastião (DF), Brasil.
Provedor de dados: 119
Autores: PONTES, R. G. M. S. de; SOARES, C. M.; SANTOS, M. dos A.; OLIVEIRA, C.; CARDOSO, C.; LIMA, L. H. C.; PRACA, L. B.; MARTINS, E. S.; DUMAS, V. F.; QUEIROZ, P. R. Q.; RAMOS, F. R. R.; SUJII, E. R.
Dengue é uma doença grave, para a qual não existem medicamentos. O controle da doença, portanto, deve ser feito através da eliminação do seu vetor, o mosquito Aedes aegypti. A Embrapa em parceria com a Bthek Biotecnologia desenvolveu o produto Bt-horus SC capaz de controlar as larvas deste inseto. Este produto foi utilizado numa campanha de controle do A. aegypti em São Sebastião (DF), onde a população foi capacitada e participou ativamente do combate ao vetor.
Tipo: Separatas
Palavras-chave: Larvicidas biológicos; Bti; Dengue.
Ano: 2012
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/951333

Serological evidence of widespread circulation of west nile virus and other flaviviruses in equines of the Pantanal, Brazil.
Provedor de dados: 119
Autores: PAUVOLID-CORRÊA, A.; CAMPOS, Z.; JULIANO, R. S.; VELEZ, J.; NOGUEIRA, R. M. R.; KOMAR, N.
Tipo: Separatas
Palavras-chave: Flaviviruses; Mosquito-borne.; Dengue; Infection; Viruses.
Ano: 2014
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/980339

Use of transgenic Aedes aegypti in Brazil: risk perception and assessment.
Provedor de dados: 119
Autores: ANDRADE, P. P. de; ARAGAO, F. J. L.; COLLI, W.; DELLAGOSTIN, O. A.; FINARDI-FILHO, F.; HIRATA, M. H.; LIRA-NETO, A. de C.; MELO, M. A. de; NEPOMUCENO, A. L.; NOBREGA, F. G. da; SOUSA, G. D. de; VALICENTE, F. H.; ZANETTINI, M. H. B.
The OX513A strain of Aedes aegypti, which was developed by the British company Oxitec, expresses a self-limiting transgene that prevents larvae from developing to adulthood. In April 2014, the Brazilian National Technical Commission on Biosafety completed a risk assessment of OX513A and concluded that the strain did not present new biological risks to humans or the environment and could be released in Brazil. At that point, Brazil became the first country to approve the unconstrained release of a genetically modified mosquito. During the assessment, the commission produced a comprehensive list of ? and systematically analysed ? the perceived hazards. Such hazards included the potential survival to adulthood of immature stages carrying the transgene ?...
Tipo: Separatas
Palavras-chave: Aedes transgênico; Método de controle; Mosquito geneticamente modificado; Chikungunya; Doença; Mosquito; Tetraciclina; Aedes aegypti; Zika virus; Dengue; Transgenes.
Ano: 2016
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1055427

Composição química e atividade larvicida do óleo essencial de Piper capitarianum (PIPERACEAE) sobre Aedes aegypti e Anopheles sp. (CULICIDAE) em laboratório.
Provedor de dados: 119
Autores: FRANÇA, L. P.; PINTO, A. C. S.; AZEVEDO, S. G.; CHAVES, F. C.; TADEI, W. P.
O objetivo do presente trabalho foi avaliar a composição química e atividade larvicida do óleo essencial das folhas de Piper capitarianum para controle de A. aegypti e Anopheles sp. em condições de laboratório.
Tipo: Separatas
Palavras-chave: Mosquitos.; Dengue; Malaria.
Ano: 2015
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1028999

Dengue incidência em Bandeirantes, PR, 2010.
Provedor de dados: 119
Autores: SERATO, V. M.; SILVA, N. M. M. G.; RANUCCI, T. R.; OTENIO, M. H.; MELO, S. C. C. S.
Tipo: Artigo em anais e proceedings
Palavras-chave: Dengue.
Ano: 2012
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/949258

Decrease in Dengue virus-2 infection and reduction of cytokine/chemokine production by Uncaria guianensis in human hepatocyte cell line Huh-7.
Provedor de dados: 119
Autores: MELLO, C. da S.; VALENTE, L. M. M.; WOLFF, T.; LIMA JUNIOR, R. S.; FIALHO, L. G.; MARINHO, C. F.; AZEREDO, E. L.; OLIVEIRA PINTO, L. M.; PEREIRA, R. de C. A.; SIANI, A. C.; KUBELKA, C. F.
Tipo: Artigo de periódico
Palavras-chave: Medicina tradicional; Imunomodulação; Antivirais; Kaempferitrin; Antivirals; Uncaria guianensis; Traditional medicine; Immunomodulation; Dengue.
Ano: 2017
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1090388

Estudo químico e atividade larvicida dos extratos de Piper capitarianum (Piperaceae) sobre Aedes aegypti e Anopheles sp. (Culicidae) em laboratório.
Provedor de dados: 119
Autores: FRANÇA, L. P.; PINTO, A. C. S.; ZEQUI, J. A. C.; CHAVES, F. C. M.; TADEI, W. P.
O objetivo do trabalho foi realizar a prospecção fitoquímica e avaliar atividade larvicida dos extratos hexânicos, metanólicos e aquosos de Piper capitarianum para controle de A. aegypti e Anopheles sp. em condições de laboratório. Na preparação dos extratos hexânicos e metanólicos foi utilizado o sistema Soxhlet e o aquoso pelo método de infusão. O estudo fitoquímico revelou a presença das classes químicas antraquinonas, flavonóides, terpenos, alcalóides e esteróides nos extratos.Os extratos hexânicos e metanólicos das inflorescências de P. capitarianum, apresentaram atividade larvicida nas duas maiores concentrações (500 e 250 µg /mL), com mortalidade de 100% sobre A. aegypti e Anopheles sp., após 72 horas exposição, demonstrando ser uma alternativa...
Tipo: Separatas
Palavras-chave: Prospecção fítoquimica; Piper capitarianum; Mosquitos.; Dengue; Malaria.
Ano: 2015
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1031149

Preparação de derivados semi-sintéticos a partir de dilapiol.
Provedor de dados: 119
Autores: NOGUEIRA, K. L.; PINTO, A. C. da S.; POHLIT, A. M.; TADEI, W. P.; CHAVES, F. C. M.
Este trabalho visou a semi-síntese e avaliação em laboratório de derivados sintetizados com potencial avaliação geral da toxicidade em Artemia franciscana e inseticida no vetor local Aedes aegypti, vetor do vírus que causa dengue hemorrágica na região.
Tipo: Parte de livro
Palavras-chave: Dilapiol; Piper aduncum; Dengue.
Ano: 2007
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/681313

First record of Aedes (Stegomyia) albopictus in the state of Amapá, northern Brazil
Provedor de dados: 36
Autores: SARAIVA,Jose Ferreira; MAITRA,Ahana; GALARDO,Allan Kardec Ribeiro; SCARPASSA,Vera Margarete.
ABSTRACT We report the first record of Aedes albopictus (Diptera: Culicidae) in the state of Amapá, northern Brazil. Two female specimens were collected from a Shannon trap in the locality of Ilha de Santana, municipality of Santana, Amapá. The occurrence of the species was confirmed with the installation of ten ovitraps. Aedes albopictus is a species of epidemiological importance for the transmission of arboviruses. Amapá was one of two Brazilian states without any record of this species.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Arboviruses; Dengue; Yellow fever; Mosquitoes.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000100071

Primeiro registro de Aedes albopictus (Diptera: Culicidae) em Roraima, Brasil
Provedor de dados: 36
Autores: Aguiar,Ducineia Barros; Fontão,Almir; Rufino,Pedro; Macedo,Valdenor Alves; Ríos-Velásquez,Cláudia Maria; Castro,Márcia Gonçalves; Honório,Nildimar Alves.
Aedes albopictus é registrado pela primeira vez no estado de Roraima, Brasil. Entre junho de 2006 e maio de 2007 foram coletadas três pupas e dez larvas, duas das quais chegaram à fase adulta, durante atividades de vigilância rotineiras em três bairros urbanos da cidade de Boa Vista. Embora essa espécie não seja incriminada como vetor primário do dengue, a sua presença pode favorecer a ligação entre os ciclos silvestre e urbano da febre amarela e de outras arboviroses no Brasil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aedes albopictus; Dengue; Roraima.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672008000200021

GENES DE SUSCEPTIBILIDAD/RESISTENCIA A Flavivirus, IMPLICACIONES EN LA SEVERIDAD DE LA INFECCIÓN
Provedor de dados: 37
Autores: PRADAARISMENDY,JEANETTE; CASTELLANOS,JAIME E.
Las infecciones transmitidas por Flavivirus se encuentran entre las enfermedades transmisibles con mayor incidencia en el mundo. La mayoría de ellas se manifiestan clínicamente como un síndrome febril que puede estar o no acompañado de diversos síntomas. La severidad de estas infecciones es variable con casos asintomáticos y otros que pueden llegar a ser letales. La razón de esta variabilidad en la presentación clínica, se desconoce en humanos. En ratones se han identificado cepas susceptibles y cepas resistentes a la infección por algunos Flavivirus. Por clonación posicional se mapeó el gen responsable de la resistencia a virus West Nile en el cromosoma 5 de ratón y se identificó como oligoadenilato sintetasa 1b (Oas1b). Este gen codifica una proteína que...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Oligoadenilato sintetasa; Flavivirus; Ratón; Susceptibilidad innata.
Ano: 2006
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2006000200002

Limited replication of yellow fever 17DD and 17D-Dengue recombinant viruses in rhesus monkeys
Provedor de dados: 42
Autores: Trindade,Gisela F.; Marchevsky,Renato S.; Fillipis,Ana M.B. de; Nogueira,Rita M.R.; Bonaldo,Myrna C.; Acero,Pedro C.; Caride,Elena; Freire,Marcos S.; Galler,Ricardo.
For the development of safe live attenuated flavivirus vaccines one of the main properties to be established is viral replication. We have used real-time reverse transcriptase-polymerase chain reaction and virus titration by plaque assay to determine the replication of yellow fever 17DD virus (YFV 17DD) and recombinant yellow fever 17D viruses expressing envelope proteins of dengue virus serotypes 2 and 4 (17D-DENV-2 and 17D-DENV-4). Serum samples from rhesus monkeys inoculated with YFV 17DD and 17D-DENV chimeras by intracerebral or subcutaneous route were used to determine and compare the viremia induced by these viruses. Viral load quantification in samples from monkeys inoculated by either route with YFV 17DD virus suggested a restricted capability of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yellow fever; Dengue; Vaccine; Attenuation; Replication; Real-time RT-PCR.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000200009

Membrane and envelope virus proteins co-expressed as lysosome associated membrane protein (LAMP) fused antigens: a potential tool to develop DNA vaccines against flaviviruses
Provedor de dados: 42
Autores: Dhalia,Rafael; Maciel Jr.,Milton; Cruz,Fábia S.P.; Viana,Isabelle F.T.; Palma,Mariana L.; August,Thomas; Marques Jr.,Ernesto T.A.
Vaccination is the most practical and cost-effective strategy to prevent the majority of the flavivirus infection to which there is an available vaccine. However, vaccines based on attenuated virus can potentially promote collateral side effects and even rare fatal reactions. Given this scenario, the developent of alternative vaccination strategies such as DNA-based vaccines encoding specific flavivirus sequences are being considered. Endogenous cytoplasmic antigens, characteristically plasmid DNA-vaccine encoded, are mainly presented to the immune system through Major Histocompatibility Complex class I - MHC I molecules. The MHC I presentation via is mostly associated with a cellular cytotoxic response and often do not elicit a satisfactory humoral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; West Nile; Yellow fever; Lysosome-Associated Membrane Protein - LAMP; DNA vaccines.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000400005

Dispersion of Aedes aegypti (Linnaeus, 1762) and Aedes albopictus (Skuse, 1894) in the rural zone of north Paraná State
Provedor de dados: 52
Autores: Lopes,José; Martins,Emerson Augusto Castilho; Oliveira,Osmar de; Oliveira,Valdecir de; Oliveira Neto,Bertolino Pedro de; Oliveira,José Eduardo de.
Seventy-two tyres were placed in four transects (Northern, Southern, Eastern and Western), every 5 km, from the Londrina city limits to the rural areas, to verify the dispersion of Aedes aegypti and Ae. albopictus vectors. Mosquito larvae were collected fortnightly from August 1998 to August 1999. Data were organized according to the average number of larvae collected for each species in each collection site. A total of 62,517 mosquito larvae were collected and distributed into the following species: Aedes albopictus (21.71%); Ae. aegypti (5.54%); Ae. terrens (0.53%); Ae. fluviatilis (0.36%); Anopheles argyritarsi (0.01%); Culex quinquefasciatus (48.37%); Cx. mollis (8.88%); Cx. eduardoi (8.65%); Cx. corniger (0.61%); Cx. bigoti (0.24%); Cx. grupo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aedes; Population dispersion; Dengue; Prevention and control; Breeding sites.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500009

Autoimmune features caused by dengue fever: a case report
Provedor de dados: 55
Autores: Jardim,Denis Leonardo Fontes; Tsukumo,Daniela Miti Lemos; Angerami,Rodrigo N.; Carvalho Filho,Marco Antonio de; Saad,Mário José Abdalla.
Dengue virus is the most important mosquito-borne viral disease in the world. Co-circulation of the four types of dengue viruses and expansion of dengue epidemic gave rise to infection enhancement and a big expansion of clinical aspects of the disease. Herein we report a case of a 25-year-old white woman with dengue fever and numerous associated autoimmune features. Our patient had proteinuria, an extensive right pleural effusion, a thin pericardial effusion and ascites. She had a low C3 level and positive antinuclear antibody; cryoglobulins were also positive. The numerous autoimmune features of this patient were a diagnostic challenge, since she was a young woman and could be easily mistaken for a rheumatologic patient in a newly open disease. Dengue...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Dengue; Autoimmunity; Hematologic diseases.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702012000100018

The clinical features and outcomes of acute liver failure associated with dengue infection in adults: a case series
Provedor de dados: 55
Autores: Tan,Soek-Siam; Bujang,Mohamad Adam.
OBJECTIVE: To describe the clinical manifestations and outcome of acute liver failure (ALF) associated with dengue viral infection, a rare but severe complication. METHODS: One hundred and fifty five consecutive patients with ALF admitted to the national liver centre from 2001 to 2009 were reviewed retrospectively. Eight cases due to dengue infection were identified and their clinical characteristics are described. RESULTS: All patients had severe dengue with one dengue shock syndrome. The median (minimum, maximum) age was 33.5 (17, 47) years with 50% female. The median (minimum, maximum) duration from the onset of fever to development of ALF was 7.5 (5, 13) days and the maximum hepatic encephalopathy (HE) grade were III in five patients and II in three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute liver failure; Dengue; Dengue hepatitis; Fulminant hepatic failure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200008

Acute atrial fibrillation during dengue hemorrhagic fever
Provedor de dados: 55
Autores: Veloso,Henrique Horta; Ferreira Júnior,João Anísio; Paiva,Joyce Morgana Braga de; Honório,Júlio Faria; Bellei,Nancy C. Junqueira; Paola,Angelo Amato Vincenzo de.
Dengue fever is a viral infection transmitted by the mosquito, Aedes aegypti. Cardiac rhythm disorders, such as atrioventricular blocks and ventricular ectopic beats, appear during infection and are attributed to viral myocarditis. However, supraventricular arrhythmias have not been reported. We present a case of acute atrial fibrillation, with a rapid ventricular rate, successfully treated with intravenous amiodarone, in a 62-year-old man with dengue hemorrhagic fever, who had no structural heart disease.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Atrial fibrilation; Dengue; Arrhythmia.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000600010

Association of dengue virus infection susceptibility with polymorphisms of 2'-5'-oligoadenylate synthetase genes: a case–control study
Provedor de dados: 55
Autores: Thamizhmani,Ramanathan; Vijayachari,Paluru.
Oligoadenylate synthetases play an important role in the immune response against dengue virus. Single nucleotide polymorphisms in the oligoadenylate synthetases genes are known to affect oligoadenylate synthetases activity and are associated with outcome of viral infections. Polymorphisms in the OAS1 SNPs (rs1131454), OAS2 SNPs (rs1293762, rs15895 and rs1732778) and OAS3 SNPs (rs2285932 and rs2072136) genes were studied using PCR followed by restriction fragment length polymorphism methods in 30 patients for dengue infection and 40 control group who have no documented evidence of symptomatic dengue. An increase in the frequency of OAS2 gene rs1293762 SNP G/T heterozygotes (p = 0.012), decrease in the frequency of SNP G/G homozygotes (p = 0.005) and...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Dengue; 2'-5'-Oligoadenylate synthetase; Polymorphisms; Genotypes.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702014000500548

Diagnostic parameters and reliability of four rapid immunochromatographic tests for dengue 4
Provedor de dados: 55
Autores: Mata,Veronica Elizabeth; Passos,Sonia Regina Lambert; Santos,Maria Angelica Borges dos; Buonora,Sibelle Nogueira; de Andrade,Carlos Augusto Ferreira; Lima,Monique da Rocha Queiroz; Costa,Betina Moreira; Hökerberg,Yara Hahr Marques.
ABSTRACT  Background: Although performance of rapid immunochromatographic tests (RITs) for dengue virus (DENV) serotypes 1, 2 and 3 is relatively settled, evidence on accuracy of RITs for DENV-4 are based on studies with small sample sizes and with discrepant results.  Objectives: To assess accuracy and inter-observer agreement of RITs targeting dengue nonstructural protein-1 (NS1) antigen - Dengue NS1-Bioeasy™, Dengue NS1 Ag Strip-Bio-Rad™, IVB Dengue Ag NS1-Orangelife™ and Dengue NS1-K130-Bioclin™ in DENV-4 samples.  Methods: Study sample (n = 324) included adults presenting at an emergency unit in Rio de Janeiro, Brazil, with fever of ≤72 h and two or more dengue symptoms. A serum sample from each patient was tested by each RIT. A positive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Immunochromatographic tests; Sensitivity and specificity; Reproducibility of tests; Diagnosis.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702020000100058

Dengue: a review of the laboratory tests a clinician must know to achieve a correct diagnosis
Provedor de dados: 55
Autores: De Paula,Sérgio Oliveira; Fonseca,Benedito Antônio Lopes da.
Dengue is the most important disease caused by an arbovirus (1, 2, 3 and 4 serotypes) worldwide, especially in the tropical and sub-tropical regions. Its clinical manifestations range from asymptomatic infections to a severe disease characterized by hemorrhage and shock. The incidence of dengue virus activity in the Americas has substantially increased from 1980 to 1994. In Brazil, the increase in the incidence of dengue is especially linked to the dissemination of Aedes aegypti. Thus, a rapid and accurate dengue diagnosis is of paramount importance for effective control of dengue outbreaks [8]. Five serological tests have been used for the diagnosis of dengue infection: hemagglutination-inhibition (HI), complement fixation (CF), neutralization test (NT),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Diagnosis; Serology; PCR.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000600002

Dengue hemorrhagic fever and acute hepatitis: a case report
Provedor de dados: 55
Autores: Mourão,Maria Paula Gomes; Lacerda,Marcus Vinícius Guimarães de; Bastos,Michele de Souza; Albuquerque,Bernardino Cláudio de; Alecrim,Wilson Duarte.
Dengue fever is the world's most important viral hemorrhagic fever disease, the most geographically wide-spread of the arthropod-born viruses, and it causes a wide clinical spectrum of disease. We report a case of dengue hemorrhagic fever complicated by acute hepatitis. The initial picture of classical dengue fever was followed by painful liver enlargement, vomiting, hematemesis, epistaxis and diarrhea. Severe liver injury was detected by laboratory investigation, according to a syndromic surveillance protocol, expressed in a self-limiting pattern and the patient had a complete recovery. The serological tests for hepatitis and yellow fever viruses were negative. MAC-ELISA for dengue was positive.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Dengue; Dengue hemorrhagic fever; Hepatitis.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000600011

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

Comparison of clinical and laboratory characteristics between children and adults with dengue
Provedor de dados: 55
Autores: Souza,Luiz José de; Pessanha,Laís Bastos; Mansur,Laura Carvalho; Souza,Luiza Assed de; Ribeiro,Mariana Barbosa Tâmega; Silveira,Monique do Vale da; Souto Filho,João Tadeu Damian.
Over the past several years, the epidemiological profile of dengue has been changing progressively and is currently characterized by an increase in the number of cases in children under 15 years of age. This study was aimed at comparing the clinical and laboratory features between adults and children with dengue; therefore, we performed a cross-sectional analysis of 5686 individuals with laboratory-confirmed dengue who sought treatment at a healthcare facility in Rio de Janeiro, Brazil from 2010 to 2011. A multivariate analysis indicated that myalgia (OR = 2.58; CI 95% = 2.08-3.18), retro-orbital pain (OR = 1.36; CI 95% = 1.15-1.62), nausea (OR = 1.92; CI 95% = 1.60-2.30), and arthralgia (OR = 3.64; CI 95% = 2.72-4.89) were the most frequent clinical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Dengue fever; Clinical spectra; Epidemiology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100005

Acute hepatitis due to dengue virus in a chronic hepatitis patient
Provedor de dados: 55
Autores: Souza,L.J; Coelho,J.M.C.O.; Silva,E.J.; Abukater,M.; Almeida,F.C.R.; Fonte,A. S.; Souza,L.A.
We present a case of acute hepatitis caused by dengue virus, with a significant increase in aspartate transferase and alanine transferase levels in a chronic hepatitis patient attended at the Cane Sugar Planters Hospital of Campos dos Goytacazes, RJ.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Liver failure; Chronic hepatitis.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702008000500021

Differences in the replicative capacities of clinical isolates of dengue virus in C6/36 cells and in urban populations of Aedes aegypti from Colombia, South America
Provedor de dados: 55
Autores: Quintero-Gil,Diana Carolina; Uribe-Yepes,Alexander; Ospina,Marta; Díaz,Francisco Javier; Martinez-Gutierrez,Marlen.
ABSTRACT Dengue, the most prevalent arboviral disease worldwide, is caused by any of the four dengue virus (DENV) serotypes that co-circulate constantly in hyperendemic areas such as Medellin (Colombia), and these serotypes are transmitted by mosquitoes of the genus Aedes. In this study, we evaluated the replicative capacity of strains isolated in Medellin between 2003 and 2007 in C6/36 cells and in colonies of Aedes aegypti collected during 2010-2011 from high or low-incidence areas within the same city. The phylogenetic analysis grouped isolates according to the predominant genotypes found in the Americas, and the in vitro characterization showed differences in the morphological changes induced by the isolates of each of the isolated serotypes compared...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Viral replication; Vector competence; Aedes aegypti; C6/36 cells; Colombia.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000400257

São Paulo urban heat islands have a higher incidence of dengue than other urban areas
Provedor de dados: 55
Autores: Araujo,Ricardo Vieira; Albertini,Marcos Roberto; Costa-da-Silva,André Luis; Suesdek,Lincoln; Franceschi,Nathália Cristina Soares; Bastos,Nancy Marçal; Katz,Gizelda; Cardoso,Vivian Ailt; Castro,Bronislawa Ciotek; Capurro,Margareth Lara; Allegro,Vera Lúcia Anacleto Cardoso.
Urban heat islands are characterized by high land surface temperature, low humidity, and poor vegetation, and considered to favor the transmission of the mosquito-borne dengue fever that is transmitted by the Aedes aegypti mosquito. We analyzed the recorded dengue incidence in Sao Paulo city, Brazil, in 2010-2011, in terms of multiple environmental and socioeconomic variables. Geographical information systems, thermal remote sensing images, and census data were used to classify city areas according to land surface temper- ature, vegetation cover, population density, socioeconomic status, and housing standards. Of the 7415 dengue cases, a majority (93.1%) mapped to areas with land surface temperature &gt;28 ◦ C. The dengue incidence rate (cases per 100,000...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urban heat islands; Land surface temperature; Vegetation cover; Dengue; Aedes aegypti.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000200146

The impact of dengue on liver function as evaluated by aminotransferase levels
Provedor de dados: 55
Autores: Souza,Luiz José de; Nogueira,Rita Maria Ribeiro; Soares,Leandro Cordeiro; Soares,Carlos Eduardo Cordeiro; Ribas,Bruno Fernandes; Alves,Felipe Pinto; Vieira,Fabíola Rodrigues; Pessanha,Felipe Eulálio Baldi.
The objective of this study was to evaluate the impact of dengue virus infection on liver function by measuring aminotransferase in blood samples from patients serologically diagnosed by according to two MAC-ELISA protocols. Degrees of liver damage were classified according to aminotransferase levels: grade A - normal enzyme levels; grade B - increased levels of at least one of the enzymes; grade C - increased, with at least one of the enzymes being at levels higher than three times the upper reference values; grade D - acute hepatitis, with aminotransferase levels at least ten times their normal values. Of the 169 serologically confirmed cases of dengue at the dengue referral center in Campos dos Goytacazes in the state of Rio de Janeiro, Brazil, 65.1%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Dengue hemorrhagic fever; Aminotransferases; Hepatitis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000400007

Hepatitis in Dengue Shock Syndrome
Provedor de dados: 55
Autores: Souza,Luiz José de; Carneiro,Helder Gonçalves; Souto Filho,João Tadeu Damian; Souza,Thiago Ferreira de; Côrtes,Vitor Azevedo; Gicovate Neto,Carlos; Bastos,Diogo Assed; Siqueira,Edno Wallace da Silva.
Dengue fever is the most frequent arbovirus disease in the world and the most important one in terms of morbidity and mortality. Atypical manifestations of dengue have become commonplace during the last few years, including hepatic damage, which manifests mainly by pain in the right hypochondrium and an increase in the levels of aminotransferases. We describe a case of acute hepatitis in a patient with Dengue Shock Syndrome Grade III. We analyzed the clinical and laboratory aspects of this atypical complication of dengue as well as the differential diagnoses.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Acute hepatitis; Dengue; Dengue hemorrhagic fever.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702002000600010

Mosquito-transmitted viruses - the great Brazilian challenge
Provedor de dados: 58
Autores: Mota,Mânlio Tasso de Oliveira; Terzian,Ana Carolina; Silva,Maria Luana Cristiny Rodrigues; Estofolete,Cássia; Nogueira,Maurício Lacerda.
ABSTRACT Arboviruses pose a serious threat to public health worldwide, overloading the healthcare system and causing economic losses. These viruses form a very diverse group, and in Brazil, arboviruses belonging to the families Flaviviridae and Togaviridae are predominant. Unfortunately, the number of arboviruses increases in proportion with factors such as deforestation, poor sanitation, climate changes, and introduction of new viruses like Chikungunya virus and Zika virus. In Brazil, dengue is endemic, along with the presence of other arboviruses. The situation is complicated by the scarcity of diagnostic infrastructure and the absence of approved vaccines for these diseases. Disease control, thus, relies solely on vector control. Therefore, enhanced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arboviruses; Dengue; Chikungunya; Mayaro; Zika.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000500038

Manejo de la resistencia a insecticidas en el mosquito Aades aegypti (Linneus, 1762) en Guerrero, México.
Provedor de dados: 32
Autores: Chino Cantor, Araceli.
El dengue es una de las enfermedades más graves a nivel mundial en salud pública, y a la fecha el uso de insecticidas químicos ha sido la principal medida de control del vector Aedes aegypti transmisor del virus causal del dengue. Con la finalidad de aportar bases para definir una estrategia de manejo regional de insecticidas, se determinó la susceptibilidad de poblaciones de Aedes aegypti L., provenientes de tres regiones de Guerrero, México (Tierra Caliente, Costa Chica y Acapulco), a los insecticidas malatión, temefos, clorpirifós étilico, pirimifós-metil, permetrina, lambda cialotrina, propoxur y espinosina. La población susceptible New Orleans se usó como referencia. Los productos en grado técnico y comercial se evaluaron por aplicación residual en...
Palavras-chave: Dengue; Aedes aegypti; Resistencia a insecticidas; Insecticides resistance; Entomología y Acarología; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2160

Ciclo de vida de Aedes (Stegomyia) aegypti (Diptera, Culicidae) em águas com diferentes características
Provedor de dados: 76
Autores: Beserra,Eduardo B.; Freitas,Eraldo M. de; Souza,José T. de; Fernandes,Carlos R. M.; Santos,Keliana D.
O trabalho teve por objetivo avaliar o efeito da qualidade da água no desenvolvimento de Aedes aegypti (Linnaeus, 1762). O ciclo de vida desse vetor foi estudado em águas de esgoto bruto, efluente de reator UASB, efluente de lagoa de polimento, efluente de filtro anaeróbio, água de chuva e água desclorada. Diariamente avaliaram-se o período de desenvolvimento e as viabilidades de ovo, larva, pupa, longevidade e a fecundidade dos adultos. A duração do período larval variou de 5,6 a 9,1 dias, sendo a sobrevivência baixa em águas de esgoto bruto, efluente de reator UASB, efluente de lagoa de polimento e efluente de filtro anaeróbio. Não foram observadas diferenças nas durações e viabilidades das fases de ovo e pupa, longevidade e fecundidade dos adultos....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Vetor; Dengue; Ciclo biológico; Qualidade da água.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000300008

Ciclos de vida comparados de Aedes aegypti (Diptera, Culicidae) do semiárido da Paraíba
Provedor de dados: 76
Autores: Castro Jr.,Francisco P. de; Martins,Walter F. S.; Lucena Filho,Mauricio L. de; Almeida,Raul P. de; Beserra,Eduardo B.
O presente trabalho teve como objetivo comparar os ciclos de vida entre amostras de populações de Aedes aegypti (Linnaeus, 1762) coletadas em dez municípios localizados no semiárido paraibano. Os ciclos de vida foram estudados a uma temperatura de 26 ± 2ºC, umidade relativa de 60 ± 10% e fotofase de 12 horas. Diariamente foram avaliados os períodos de desenvolvimentos e as viabilidades das fases de ovo, larva e pupa, bem como a razão sexual, longevidade, tamanho e fecundidade dos adultos. Foi realizada uma análise de agrupamento, utilizando-se uma matriz de distância euclidiana através do método da média não-ponderada. As durações e viabilidades para as fases de ovo, larva e pupa apresentaram respectivamente, uma variação média de 3,7 a 4,7 dias e 82,8% a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aedini; Vetor; Dengue; Ciclo biológico.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000200006