Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 2
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Environmental quality of an estuary in Amazon delta using immunohistochemical and morphological analyses of gill as biomarkers Biological Sciences
Montes, Caroline da Silva; Ferreira, Maria Auxiliadora Pantoja; Santos, Simone do Socorro Damasceno dos; Rocha, Rossineide Martins.
In this study, histological, ultrastructural, and immunohistochemical observations of the gill tissue of two fish species (Plagioscion squamosissimus and Lithodoras dorsalis) were used as biomarkers to assess the ecological conditions of an estuary in the Amazon delta, by relating the health status of the fishes to environmental quality. The gill tissue was analyzed both qualitatively and semi-quantitatively. Marked differences in the type and severity of lesions were verified between species and among study sites. A variety of severe damages were confirmed histologically in specimens from the two impacted areas (B and C), including aneurysms, epithelial lifting, and intense hyperplasia. Electron microscopy and immunohistochemical analyses also revealed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.06.03.00-2; 2.10.07.00-4; 2.11.01.00-0 histology; TUNEL; Teleost; Barcarena; Industrial effluents ecotoxicologia.
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/24541
Imagem não selecionada

Imprime registro no formato completo
Opioid system manipulation during testicular development: results on sperm production and sertoli cells population - doi: 10.4025/actascibiolsci.v33i2.5940 Biological Sciences
Cajú, Fernanda Mafra; Universidade Federal Rural de Pernambuco; Queiroz, Gian Carlo D'Angelo; Universidade Federal Rural de Pernambuco; Torres, Sandra Maria; Universidade Federal Rural de Pernambuco; Tenório, Bruno Mendes; Universidade Federal Rural de Pernambuco; Silva Júnior, Valdemiro Amaro; Universidade Federal Rural de Pernambuco.
The Sertoli cell has fundamental importance to the development and maintenance of spermatogenesis, as well as it has a directly proportional numerical relationship to sperm production. The proliferative period of this cell in rats occurs between 13 days pre-natal and 21 days pos-natal, when is established the final population in adult animals. The Leydig cell can modulate the Sertoli cell proliferation during fetal and neonatal period through β-endorphin. The manipulation of opioidergic system can promote changes in parameters related to development of nervous, endocrine and reproductive systems. By the way, the main purpose of this present work was to compare the effects of the blockade of opioid receptor blocking in Sertoli cells using...
Tipo: Estudo histomorfológico Palavras-chave: 2.06.00.00-3; 2.06.03.00-2; 2.07.02.00-0 Naltrexone; Testis development; Spermatogenesis; Wistar rats Morfologia; Histologia; Fisiologia de Órgão e Sistemas Naltrexone; Testis development; Spermatogenesis; Wistar rats.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5940
Registros recuperados: 2
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional