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| Registros recuperados: 216 | |
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| SANTOS, P. R.; ANDRADE-PORTO, S. M.; OLIVEIRA, M. I. B.; BRANDÃO, F. R.; MATOS, L. V.; VELÁSQUEZ, J. G. R.; FARIAS, C. F. S.; CARPIO, K. C. R.; CHAVES, F. C. M.; CHAGAS, E. C.. |
| Abstract: The aim of this study was to determine the acute toxicity of the essential oils (EOs) of Aloysia triphylla, Lippia gracilis and Piper aduncum in juvenile tambaqui (Colossoma macropomum), and evaluate the possible histopathological alterations in their gills. Resumo: O objetivo deste estudo foi determinar a toxicidade aguda dos óleos essenciais (OEs) de Aloysia triphylla, Lippia gracilis e Piper aduncum em juvenis de tambaqui (Colossoma macropomum), e avaliar as possíveis alterações histopatológicas em suas brânquias. |
| Tipo: Artigo de periódico |
Palavras-chave: Lethal concentration; Natural products; Produtos naturais; Tambaqui; Colossoma Macropomum; Óleo Essencial; Histologia; Histology. |
| Ano: 2023 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1157825 |
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| FREITAS, R. T. da; PAIVA, R.; SALES, T. S.; SILVA, D. P. C. da; REIS, M. V. dos; SOUZA, A. C. de; ROSA, S. D. V. F. da. |
| As a consequence of the difficulty in conventional coffee seed storage, biotechnological alternatives such as cryopreservation have been investigated. The objective of this study was to develop a protocol for the cryopreservation of Coffea arabica L. (cv. ?Catuaí Vermelho? - IAC 144) zygotic embryos by vitrification. For the cryopreservation study, the embryos were immersed in Plant Vitrification Solution 2 at different times (0, 10, 25, 50, 100, and 250 min) and two temperatures (0 and 25 °C). Subsequently, the best thawing time was determined in a water bath (1, 3, 5 minutes or directly in Recovery Solution). An anatomical study was conducted on non-stored and stored embryos, with or without the use of Plant Vitrification Solution 2. The immersion in... |
| Tipo: Artigo de periódico |
Palavras-chave: Liquid nitrogen; PVS2; TTC test; Ex situ conservation; Histology; Thawing. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1065188 |
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| VILELA, R. A.; LOURENÇO JUNIOR, J. DE B.; JACINTO, M. A. C.; BARBOSA, A. V. C.; PANTOJA, M. H. DE A.; OLIVEIRA, C. M. C.; GARCIA, A. R.. |
| The thermolytic capacity test is used to assess the adaptability of animals to existing environmental conditions. However, there is insufficient information on the relationship between histomorphometry and adaptability of buffaloes. Thus, this study aimed to assess the use of thermolysis pathways by buffaloes reared in a hot and humid environment so as to understand the relationships between environment, skin morphological characteristics, and heat storage, as well as the intensity and proportionality of use of its ways of dissipating heat to maintain homeothermy. The heat tolerance test, associated with the evaluations via infrared thermography, was applied to 10 female Murrah buffaloes and tegument histomorphometry was carried out. The animals exhibited... |
| Tipo: Artigo de periódico |
Palavras-chave: Acclimatization; Infrared thermography; Precision livestock farming; Bubalus Bubalis; Heat stress; Histology; Thermoregulation. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1145185 |
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| GALLEGO RÚA,Adriana María; HENAO RAMÍREZ,Ana María; URREA TRUJILLO,Aura Inés; ATEHORTÚA GARCÉS,Lucía. |
| In order to understand the causes of lack of regeneration in cacao somatic embryos, two cacao varieties with different responses to regeneration potential were described based on their capacity to store different compounds. It is well known that seed reserves play a central role in the regenerative capability of somatic embryos; thus, we followed histochemical changes and reserve fluctuations of proteins, polysaccharides and polyphenols during somatic embryogenesis (SE) in the two cacao varieties. The study showed that, in somatic embryos of the regenerating variety, polyphenols were localized mainly in the periphery of the embryo (epidermal cells) and proteins were the main storage substance in the embryo expression medium, while the non-regenerating... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidants; Histology; Reserve accumulation; Recalcitrance; Somatic embryogenesis. |
| Ano: 2016 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2016000200002 |
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| Maciel, Simone Alencar; Universidade Federal do Acre; Fermino Junior, Paulo Cesar Poeta; Universidade Federal do Acre; Silva, Ricardo Alexandre; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Scherwinski-Pereira, Jonny Everson; Embrapa Recursos Genéticos e Biotecnologia. |
| The objective of this study was to morpho-anatomically characterize nodular embryogenic calluses from zygotic embryos of peach palm during the induction of somatic embryogenesis. Immature zygotic embryos were pre-treated in MS medium added to Picloram and 2,4-D (25 µM) and BAP (0, 5, 10 µM). After three months, primary calluses were transferred to MS induction medium added to Picloram and 2,4-D (450 µM). After six months, the embryogenic calluses were then histologically analyzed and cultivated in the maturation medium. The competent tissues of the zygotic embryos differentiated embryogenic calluses under action of both Picloram and 2,4-D auxins (450 µM), where the presence of multi-granular structures were observed.... |
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Palavras-chave: Bactris gasipaes; Micropropagation; Histology; Morphology; Callus anatomy; Somatic embryos 5.00.00.00-4 Bactris gasipaes; Micropropagation; Histology; Morphology; Callus anatomy; Somatic embryos Ciências Agrárias. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3248 |
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| Figueiredo Júnior, Jalceyr Pessoa; Costa, Fernando Guilherme Perazzo; Guerra, Ricardo Romão; Santana, Marcelo Helder Medeiros; Lima, Matheus Ramalho de; Pinheiro, Sarah Gomes. |
| An experiment was carried out to evaluate the requirement of digestible methionine for growing pullets at growth phase (7 to 12 weeks of age). A completely randomized design was distributed in five treatments, six replicates, and 15 pullets per experimental unit. 450 Dekalb White pullets from the 7th weeks of age, with an average initial weight of 313.14 ± 12.49 g were used. Dietary treatments consisted in five diets supplemented with DL-Methionine which resulted in five levels of digestible methionine (0.266, 0.294, 0.322, 0.350, and 0.378 %). Performance, serological blood, histopathology and histomorphometry data were evaluated. Quadratic responses were observed for final live weight (p < 0.0143), weight gain (p < 0.0073), feed conversion... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzymatic profile Essential amino acid Histology Morphometry. enzymatic profile; Essential amino acid; Histology; Morphometry.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47222 |
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| Cruz, Zilma Maria Almeida; Universidade Vila Velha; Castro, Rodrigo Roque Lesqueves de; Universidade Vila Velha; Canal, Adriana; Azevedo Júnior, Romildo Rocha; Universidade Vila Velha; Silva, Ary Gomes da; Universidade Vila Velha; Ramos, Alessandro; Universidade Vila Velha. |
| The effects of polluted water at three sites in the Marinho River, Brazil, on Oreochromis niloticus (Nile tilápia) were investigated using histological, hematological and biochemical approaches. Fish exposed to the impacted water demonstrated that histological changes in gills were accompanied by nuclear and micronuclei abnormalities in cells. The activity of liver and plasma biomarkers (alkaline phosphatase (ALP), acid phosphatase (ACP), alanine aminotransferase (ALT), aspartate aminotransferase (AST) and liver glutathione S-transferase (GST)) showed an expressive change due to the. The results were also correlated with the highest levels of Cu+2, Zn+2 and Mn+2 in the water. The data of this study evidenced the importance of using a set of biomarkers to... |
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Palavras-chave: Aminotransferases; Phosphatases; Glutathione-S-transferase; Histology; Cell abnormality; Tilapia. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13207 |
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| Machado-Santos, Clarice; Universidade Federal da Bahia.; Teixeira, Monalisa Jales; Médica Veterinária Autônoma; Sales, Armando; Universidade Federal Rural do Rio de Janeiro; Abidu-Figueiredo, Marcelo; Universidade Federal Rural do Rio de Janeiro. |
| The broad-snouted caiman, Caiman latirostris, is widely distributed in countries of South America. In Brazil it is considered an endangered species because of natural habitat destruction and illegal hunting. In reptiles, the thyroid gland plays an integral part in ecdysis, reproduction, tail regeneration, growth, endocrine function and metabolism rate. The aim of the present study was to characterize the thyroid gland morphology of C. latirostris, based on histochemical and immunohistochemical techniques. The thyroid glands were fixed in Bouin's fluid and serial cross sections were stained with hematoxylin-eosin, Mallory’s trichrome, periodic acid-Schiff (PAS) and Alcian blue (AB pH 1.5 and 2.5). The immunohistochemical technique for 5-HT-IR cells was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências biológicas Thyroid; Histology; Reptiles; 5-HT Histologia. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18444 |
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| REIS,TATIANE C.; SOARES,MARCUS A.; SANTOS,JOSÉ B. DOS; SANTOS,CONCEIÇÃO A. DOS; SERRÃO,JOSE EDUARDO; ZANUNCIO,JOSÉ C.; FERREIRA,EVANDER A.. |
| Abstract Herbicides can impact non-target metabolic pathways in natural enemies and lead to the reduction of these populations in the field. Behavioral characteristics, morphology and histology of reproductive structures and reproduction of females of Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) were evaluated under the effect of the herbicides atrazine, nicosulfuron and the mixture of both. The number of mature oocytes per ovary was lower in females exposed to the herbicides atrazine, nicosulfuron and the mixture of both. Herbicides did not affect the longevity and mortality of P. nigrispinus, therefore, they are selective for this predator. On the other hand, herbicides can cause sublethal effects by affecting the reproduction of predators. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavior; Histology; Morphology; Reproduction; Herbicides. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703625 |
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| BECEGATO,ESTELLA Z.; ANDRADE,JANAINA P.; GUIMARÃES,JULIANA P.; VERGARA-PARENTE,JOCIERY E.; MIGLINO,MARIA ANGELICA; SILVA,FERNANDA M. DE OLIVEIRA E. |
| The reproductive morphology of cetaceans is poorly studied and, despite the large number of strandings, reports on this subject are scarce due to access to carcasses mostly in an advanced state of decomposition. The present study aimed to describe histological characteristics of the female genital tract ofSotalia guianensis, in order to assist in future studies on the reproductive biology of these animals. Females of different ages, from stranding events on beaches in northeastern Brazil, were used. Fragments of all organs were collected and processed for light and scanning electron microscopy. Histological analyses showed that these structures were similar to those found in terrestrial mammals, with some peculiarities, such as the presence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Female genital system; Anatomy; Histology; Guiana dolphin. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401727 |
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| 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 |
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| Registros recuperados: 216 | |
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