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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
12/12/2012 |
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Data da última atualização: |
09/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAMPOS JUNIOR, P. H. A.; ASSUNÇÃO, C. M.; CARVALHO, B. C. de; BATISTA, R. I. T. P.; GARCIA, R. M. G.; VIANA, J. H. M. |
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Afiliação: |
PAULO HENRIQUE ALMEIDA CAMPOS JUNIOR, UFMG; CAROLINA MARINHO ASSUNÇÃO, UFJF; BRUNO CAMPOS DE CARVALHO, CNPGL; RIBRIO IVAN TAVARES PEREIRA BATISTA, UFJF; RAUL MARCEL GONZALEZ GARCIA, UFJF; JOAO HENRIQUE MOREIRA VIANA, CNPGL. |
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Título: |
Follicular populations, recruitment and atresia in the ovaries of different strains of mice. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Reproductive Biology, v. 12, n. 1. p. 41-55, 2012. |
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DOI: |
https://doi.org/10.1016/S1642-431X(12)60076-X |
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Idioma: |
Inglês |
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Conteúdo: |
Follicular atresia is a key event in the selection of the ovulatory follicles and occurs during all developmental stages. The aims of the study were to evaluate the follicular population as well as the rates of follicular recruitment and atresia in different strains of mice. Ovaries were obtained from four strains of mice: G1/Swiss, G2/F1 Swiss×C57BL/6, G3/inbred strain C57BL/6, and G4/F1 C57BL/6×Swiss. All mice used in the study were 60 days old. Ovaries collected from the mice were fixed and processed for histological analysis. The G2 ovaries were also used to examine immunolocalization of active caspase-3. The pimordial follicle population was smaller in G3 mice than in G1, G2 and G4 groups (7 565±1 845 vs. 17 180±3 159, 14 785±3 319 and 13 325±2 685, respectively; p<0.05). The rate of follicular recruitment in G3, however, was higher than in the other groups (29.2% vs. 18.2%, 17.3% and 13.0% in G1, G2 and G4, respectively; p<0.05), resulting in a similar (p>0.05) number of antral follicles among groups. The small follicular pool in G3 mice was also associated with a lower rate of follicular atresia (11.4% vs. 17.2%, 16.7% and 13.6% for G3, G1, G2 and G4, respectively; p<0.05). The number of follicles stained with active caspase-3 was higher (p<0.05) during the final stage of preantral folliculogenesis than in other stages of follicular development suggesting that apoptosis in mice occurs earlier in comparison to large animals. Thus, it was concluded that differences in follicle reservoir among mice strains are compensated by an increased rate of follicular recruitment and a decreased rate of follicular atresia; and atresia occurs in mice mainly at the end of the preantral stage of folliculogenesis. MenosFollicular atresia is a key event in the selection of the ovulatory follicles and occurs during all developmental stages. The aims of the study were to evaluate the follicular population as well as the rates of follicular recruitment and atresia in different strains of mice. Ovaries were obtained from four strains of mice: G1/Swiss, G2/F1 Swiss×C57BL/6, G3/inbred strain C57BL/6, and G4/F1 C57BL/6×Swiss. All mice used in the study were 60 days old. Ovaries collected from the mice were fixed and processed for histological analysis. The G2 ovaries were also used to examine immunolocalization of active caspase-3. The pimordial follicle population was smaller in G3 mice than in G1, G2 and G4 groups (7 565±1 845 vs. 17 180±3 159, 14 785±3 319 and 13 325±2 685, respectively; p<0.05). The rate of follicular recruitment in G3, however, was higher than in the other groups (29.2% vs. 18.2%, 17.3% and 13.0% in G1, G2 and G4, respectively; p<0.05), resulting in a similar (p>0.05) number of antral follicles among groups. The small follicular pool in G3 mice was also associated with a lower rate of follicular atresia (11.4% vs. 17.2%, 16.7% and 13.6% for G3, G1, G2 and G4, respectively; p<0.05). The number of follicles stained with active caspase-3 was higher (p<0.05) during the final stage of preantral folliculogenesis than in other stages of follicular development suggesting that apoptosis in mice occurs earlier in comparison to large animals. Thus, it was concluded that differences in f... Mostrar Tudo |
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Palavras-Chave: |
Folliculogenesis. |
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Thesaurus Nal: |
apoptosis; caspase-3; heterosis. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02495naa a2200241 a 4500
001 1942169
005 2024-02-09
008 2012 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/S1642-431X(12)60076-X$2DOI
100 1 $aCAMPOS JUNIOR, P. H. A.
245 $aFollicular populations, recruitment and atresia in the ovaries of different strains of mice.$h[electronic resource]
260 $c2012
520 $aFollicular atresia is a key event in the selection of the ovulatory follicles and occurs during all developmental stages. The aims of the study were to evaluate the follicular population as well as the rates of follicular recruitment and atresia in different strains of mice. Ovaries were obtained from four strains of mice: G1/Swiss, G2/F1 Swiss×C57BL/6, G3/inbred strain C57BL/6, and G4/F1 C57BL/6×Swiss. All mice used in the study were 60 days old. Ovaries collected from the mice were fixed and processed for histological analysis. The G2 ovaries were also used to examine immunolocalization of active caspase-3. The pimordial follicle population was smaller in G3 mice than in G1, G2 and G4 groups (7 565±1 845 vs. 17 180±3 159, 14 785±3 319 and 13 325±2 685, respectively; p<0.05). The rate of follicular recruitment in G3, however, was higher than in the other groups (29.2% vs. 18.2%, 17.3% and 13.0% in G1, G2 and G4, respectively; p<0.05), resulting in a similar (p>0.05) number of antral follicles among groups. The small follicular pool in G3 mice was also associated with a lower rate of follicular atresia (11.4% vs. 17.2%, 16.7% and 13.6% for G3, G1, G2 and G4, respectively; p<0.05). The number of follicles stained with active caspase-3 was higher (p<0.05) during the final stage of preantral folliculogenesis than in other stages of follicular development suggesting that apoptosis in mice occurs earlier in comparison to large animals. Thus, it was concluded that differences in follicle reservoir among mice strains are compensated by an increased rate of follicular recruitment and a decreased rate of follicular atresia; and atresia occurs in mice mainly at the end of the preantral stage of folliculogenesis.
650 $aapoptosis
650 $acaspase-3
650 $aheterosis
653 $aFolliculogenesis
700 1 $aASSUNÇÃO, C. M.
700 1 $aCARVALHO, B. C. de
700 1 $aBATISTA, R. I. T. P.
700 1 $aGARCIA, R. M. G.
700 1 $aVIANA, J. H. M.
773 $tReproductive Biology$gv. 12, n. 1. p. 41-55, 2012.
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Embrapa Gado de Leite (CNPGL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
06/04/2010 |
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Data da última atualização: |
06/04/2010 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA FILHO, E. C. de. |
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Afiliação: |
EDUARDO CYRINO DE OLIVEIRA FILHO, CPAC. |
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Título: |
A importância da toxicologia nos cursos de ciências da saúde e no entedimento dos processos de saúde e ambiente. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: CONGRESSO DE ENSINO PESQUISA E EXTENSÃO, 7.; ENCONTRO DE INICIAÇÃO CIENTÍFICA DO UNICEUB, 7., 2009, Brasília, DF. Caminhos para a sustentabilidade: [resumos]. Brasília, DF: UniCEUB, 2009. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Thesagro: |
Toxicologia. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 00585naa a2200133 a 4500
001 1663249
005 2010-04-06
008 2009 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA FILHO, E. C. de
245 $aA importância da toxicologia nos cursos de ciências da saúde e no entedimento dos processos de saúde e ambiente.
260 $c2009
300 $c1 CD-ROM.
650 $aToxicologia
773 $tIn: CONGRESSO DE ENSINO PESQUISA E EXTENSÃO, 7.; ENCONTRO DE INICIAÇÃO CIENTÍFICA DO UNICEUB, 7., 2009, Brasília, DF. Caminhos para a sustentabilidade: [resumos]. Brasília, DF: UniCEUB, 2009.
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