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Registro Completo |
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
07/10/2022 |
Data da última atualização: |
07/10/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MACEDO, T. J. S.; MENEZES, V. G.; BARBERINO, R. S.; SILVA, R. L. S.; GOUVEIA, B. B.; MONTE, A. P. O.; LINS, T. L. B. G.; SANTOS, J. M. S.; BEZERRA, M. E. S.; WISCHRAL, A.; QUEIROZ, M. A. A.; ARAUJO, G. G. L. de; BATISTAM A. M.; MATOS, M. H. T. |
Afiliação: |
T. J. S. MACEDO, UNIVASF; V. G. MENEZES, UNIVASF; R. S. BARBERINO, UNIVASF; R. L. S. SILVA, UNIVASF; B. B. GOUVEIA, UNIVASF; A. P. O. MONTE, UNIVASF; T. L. B. G. LINS, UNIVASF; J. M. S. SANTOS, UNIVASF; M. E. S. BEZERRA, UNIVASF; A. WISCHRAL, UFRPE; M. A. A. QUEIROZ, UNIVASF; GHERMAN GARCIA LEAL DE ARAUJO, CPATSA; A. M. BATISTA, URFPE; M. H. T. MATOS., UNIVASF. |
Título: |
Leptin decreases apoptosis and promotes the activation of primordial follicles through the phosphatidylinositol-3-kinase/protein kinase B pathway in cultured ovine ovarian tissue. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Zygote, v. 29, n. 6, p. 445-451, 2021. |
DOI: |
https://doi.org/10.1017/S0967199421000034 |
Idioma: |
Inglês |
Conteúdo: |
This study evaluated the effects of leptin on primordial follicle survival and activation after in vitro culture of ovine ovarian tissue and if leptin acts through the phosphatidylinositol-3-kinase/protein kinase B (PI3K/Akt) pathway. Ovarian fragments were fixed for histology (fresh control) or cultured for 7 days in control medium (α-MEMþ) alone or supplemented with leptin (1, 5, 10, 25 or 50 ng/ml). Follicle morphology, activation and apoptosis were analyzed. Next, the fragments were cultured in the medium that showed the best results in the absence or the presence of the PI3K inhibitor (LY294002), and immunohistostaining of p-Akt protein was assessed. After culture, the percentage of normal follicles decreased (P < 0.05) in all treatments compared with the fresh control. Moreover, control medium and 1 ng/ml leptin had similar (P > 0.05) percentages of normal follicles, which were significantly higher than those in other treatments. However, culture with 1 ng/ml leptin maintained apoptosis similarly (P > 0.05) to that of the fresh control and lower (P < 0.05) than that in α-MEMþ. Leptin did not influence follicle activation (P > 0.05) compared with the control medium (α-MEMþ). Culture in 1 ng/ml leptin with LY294002 decreased the normal follicles and increased apoptosis, inhibited follicle activation (P < 0.05), and reduced p-Akt immunostaining, compared with the medium containing 1 ng/ml leptin without PI3K inhibitor. In conclusion, leptin at 1 ng/ml reduces apoptosis and promotes the activation of primordial follicles compared with the fresh control after in vitro culture of ovine ovarian tissue possibly through the PI3K/Akt pathway. MenosThis study evaluated the effects of leptin on primordial follicle survival and activation after in vitro culture of ovine ovarian tissue and if leptin acts through the phosphatidylinositol-3-kinase/protein kinase B (PI3K/Akt) pathway. Ovarian fragments were fixed for histology (fresh control) or cultured for 7 days in control medium (α-MEMþ) alone or supplemented with leptin (1, 5, 10, 25 or 50 ng/ml). Follicle morphology, activation and apoptosis were analyzed. Next, the fragments were cultured in the medium that showed the best results in the absence or the presence of the PI3K inhibitor (LY294002), and immunohistostaining of p-Akt protein was assessed. After culture, the percentage of normal follicles decreased (P < 0.05) in all treatments compared with the fresh control. Moreover, control medium and 1 ng/ml leptin had similar (P > 0.05) percentages of normal follicles, which were significantly higher than those in other treatments. However, culture with 1 ng/ml leptin maintained apoptosis similarly (P > 0.05) to that of the fresh control and lower (P < 0.05) than that in α-MEMþ. Leptin did not influence follicle activation (P > 0.05) compared with the control medium (α-MEMþ). Culture in 1 ng/ml leptin with LY294002 decreased the normal follicles and increased apoptosis, inhibited follicle activation (P < 0.05), and reduced p-Akt immunostaining, compared with the medium containing 1 ng/ml leptin without PI3K inhibitor. In conclusion, leptin at 1 ng/ml reduc... Mostrar Tudo |
Palavras-Chave: |
Adipocina; Danos no DNA; Folículos ovarianos; Leptina; Oócito; Primordial folículo. |
Thesagro: |
Ovelha. |
Thesaurus Nal: |
Adipokines; DNA damage; Leptin; Oocytes; Ovarian follicles; Sheep. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02982naa a2200445 a 4500 001 2147186 005 2022-10-07 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1017/S0967199421000034$2DOI 100 1 $aMACEDO, T. J. S. 245 $aLeptin decreases apoptosis and promotes the activation of primordial follicles through the phosphatidylinositol-3-kinase/protein kinase B pathway in cultured ovine ovarian tissue. 260 $c2021 520 $aThis study evaluated the effects of leptin on primordial follicle survival and activation after in vitro culture of ovine ovarian tissue and if leptin acts through the phosphatidylinositol-3-kinase/protein kinase B (PI3K/Akt) pathway. Ovarian fragments were fixed for histology (fresh control) or cultured for 7 days in control medium (α-MEMþ) alone or supplemented with leptin (1, 5, 10, 25 or 50 ng/ml). Follicle morphology, activation and apoptosis were analyzed. Next, the fragments were cultured in the medium that showed the best results in the absence or the presence of the PI3K inhibitor (LY294002), and immunohistostaining of p-Akt protein was assessed. After culture, the percentage of normal follicles decreased (P < 0.05) in all treatments compared with the fresh control. Moreover, control medium and 1 ng/ml leptin had similar (P > 0.05) percentages of normal follicles, which were significantly higher than those in other treatments. However, culture with 1 ng/ml leptin maintained apoptosis similarly (P > 0.05) to that of the fresh control and lower (P < 0.05) than that in α-MEMþ. Leptin did not influence follicle activation (P > 0.05) compared with the control medium (α-MEMþ). Culture in 1 ng/ml leptin with LY294002 decreased the normal follicles and increased apoptosis, inhibited follicle activation (P < 0.05), and reduced p-Akt immunostaining, compared with the medium containing 1 ng/ml leptin without PI3K inhibitor. In conclusion, leptin at 1 ng/ml reduces apoptosis and promotes the activation of primordial follicles compared with the fresh control after in vitro culture of ovine ovarian tissue possibly through the PI3K/Akt pathway. 650 $aAdipokines 650 $aDNA damage 650 $aLeptin 650 $aOocytes 650 $aOvarian follicles 650 $aSheep 650 $aOvelha 653 $aAdipocina 653 $aDanos no DNA 653 $aFolículos ovarianos 653 $aLeptina 653 $aOócito 653 $aPrimordial folículo 700 1 $aMENEZES, V. G. 700 1 $aBARBERINO, R. S. 700 1 $aSILVA, R. L. S. 700 1 $aGOUVEIA, B. B. 700 1 $aMONTE, A. P. O. 700 1 $aLINS, T. L. B. G. 700 1 $aSANTOS, J. M. S. 700 1 $aBEZERRA, M. E. S. 700 1 $aWISCHRAL, A. 700 1 $aQUEIROZ, M. A. A. 700 1 $aARAUJO, G. G. L. de 700 1 $aBATISTAM A. M. 700 1 $aMATOS, M. H. T. 773 $tZygote$gv. 29, n. 6, p. 445-451, 2021.
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Embrapa Semiárido (CPATSA) |
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Registros recuperados : 7 | |
2. | | SOUZA, S. A. M. de; LOURENÇO JÚNIOR, J. de B.; LOURENÇO L. de F. H.; AMANJAS, C. C.; SOUSA, C. L.; COSTA, N. A. da; CARVALHO, L. O. D. de M.; SANTOS, N. de F. A. dos. Avaliação do rendimento e das características físico-químicas de carne-de-sol elaborada com corte secundário em baby búfalo. In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE CARNES, 1., 2001, São Pedro, SP. Carne: qualidade e segurança para os consumidores do novo milênio - anais. São Pedro: ITAL-CTC, 2001. p. 299-300. il.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
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3. | | LOURENÇO, V. V.; LOURENÇO JUNIOR, J. de B.; LOURENÇO, L. de F. H.; SOUSA, C. L.; COSTA, N. A. da; CARVALHO, L. O. D. de M.; SANTOS, N. de F. A. dos. Avaliação microbiológica e sensorial de carne de baby búfalo. In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE CARNES, 1., 2001, São Pedro, SP. Anais... São Pedro: ITAL-CTC, 2001. p. 442-443. il.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
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4. | | NORONHA, G. N.; JOELE, M. R. S. P.; LOURENÇO JUNIOR, J. de B.; NAHUM, B. S.; NERES, L. de S.; RODRIGUES, A. M. da C.; LOURENÇO, L. de F. H.; SILVA, O. L. L. Composição centesimal, física e sensorial de carne de búfalos terminados em sistema tradicional e silvipastoril na Amazônia Oriental. In: CONGRESSO BRASILEIRO DE BUIATRIA, 10.; SEMANA DO MÉDICO VETERINÁRIO DO PARÁ, 37.; SIMPÓSIO PARAENSE DE MEDICINA VETERINÁRIA, 5., 2013, Belém, PA. Anais... Belém, PA: Associação Brasileira de Buiatria, 2013.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
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6. | | JOELE, M. R. S. P.; LOURENÇO JUNIOR, J. de B.; NAHUM, B. S.; NERES, L. de S.; LOURENÇO, L. de F. H.; RODRIGUES, E. C. N.; NORONHA, G. N. Perfil de ácidos graxos de carne de búfalos terminados em sistemas tradicional e silvipastoril. In: CONGRESSO BRASILEIRO DE BUIATRIA, 10.; SEMANA DO MÉDICO VETERINÁRIO DO PARÁ, 37.; SIMPÓSIO PARAENSE DE MEDICINA VETERINÁRIA, 5., 2013, Belém, PA. Anais... Belém, PA: Associação Brasileira de Buiatria, 2013.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
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7. | | MOURA, M. M.; AZEVEDO, N. A. A.; LOURENÇO JUNIOR, J. de B.; LOURENÇO, L. de F. H.; AMANJÁS, C. C.; SOUSA, C. L.; COSTA, N. A. da; CARVALHO, L. O. D. de M.; SANTOS, N. de F. A. dos. Rendimento e características físico-químicas de "babybúrger" elaborado com corte secundário de baby búfalo. In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE CARNES, 1., 2001, São Pedro, SP. Anais... São Pedro: ITAL-CTC, 2001. p. 301-302. Il.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Amazônia Oriental. |
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Registros recuperados : 7 | |
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