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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
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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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| 1. |  | FARIA, D. A. de; BORBA FILHO, A. B.; MATOS, V. A. T. de; CARVALHO, E. A. de; CARVALHO, C. G. P. características agronômicas de genótipos de girassol cultivados em campo verde - mt, na safrinha de 2016. In: REUNIÃO NACIONAL DE PESQUISA DE GIRASSOL, 22.; SIMPÓSIO NACIONAL SOBRE A CULTURA DO GIRASSOL, 10., 2017, Lavras. Anais... Londrina: Embrapa Soja, 2017. p. 125-128. (Embrapa Soja. Documentos, 395). Editado por Regina Maria Villas Bôas de Campos Leite. Título em inglês: Agronomic characteristics of sunflower genotypes cultivated in campo
verde - mt, on off-season of 2016.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 2. | | AMABILE, R. F.; MATOS, V. A. T.; DALCHIAVON, F. C.; BORBA FILHO, A. B.; ALVES, A. D.; FREITAS, R. J.; ANSELMO, J. L.; SILVA, A. G.; GODINHO, V. de P. C.; CARVALHO, C. G. P. Adaptabilidade e estabilidade de híbridos de girassol de segunda safra de verão no Brasil, anos agrícolas 2016 e 2017. Planaltina, DF : Embrapa Cerrados, 2020. 18 p. (Embrapa Cerrados. Boletim de Pesquisa e Desenvolvimento, 356).| Tipo: Boletim de Pesquisa e Desenvolvimento |
| Biblioteca(s): Embrapa Cerrados; Embrapa Rondônia; Embrapa Soja. |
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| 3. | | ASSIS, R. G. da S.; VIEIRA, L. H.; AMABILE, R. F.; GODINHO, V. de P. C.; MATOS, V. A. T. de; RAMOS, N. P.; SILVA, A. G. da; CARVALHO, C. G. P. Adaptabilidade e estabilidade de híbridos de girassol em segunda safra de verão no Brasil. In: JORNADA ACADÊMICA DA EMBRAPA SOJA, 18., 2023, Londrina. Resumos expandidos... Londrina: Embrapa Soja, 2023. (Embrapa Soja. Documentos, 453). Regina Maria Villas Bôas de Campos Leite, Larissa Alexandra Cardoso Moraes, Kelly Catharin, Editoras Técnicas. p. 120-125.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados; Embrapa Rondônia; Embrapa Soja. |
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