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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: |
07/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAES, V. M.; VIEIRA, L. A.; CORREIA, H. H. V.; SA, N. A. R.; MOURA, A. A. A.; SALES, A. D.; RODRIGUES, A. P. R.; MAGALHÃES-PADILHA, D. M.; SANTOS, F. W.; APGAR, G. A.; CAMPELLO, C. C.; CAMARGO, L. S. de A.; FIGUEIREDO, J. R. |
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Afiliação: |
V. M. Paes, LAMOFOPA - CE; L. A. Vieira, LAMOFOPA - CE; H. H. V. Correia, LAMOFOPA - CE; N. A. R. Sa, LAMOFOPA - CE; A. A. A. Moura, Universidade Federal do Ceará; A. D. Sales, LAMOFOPA - CE; A. P. R. Rodrigues, LAMOFOPA - CE; D. M. Magalhães-Padilha, Universidade Potiguar; F. W. Santos, Universidade Estadual do Pampa; G. A. Apgar, Southern Illinois University, Carbondale, Illinois, USA; C. C. Campello, LAMOFOPA - CE; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; J. R. Figueiredo, LAMOFOPA - CE. |
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Título: |
Effect of heat stress on the survival and development of in vitro cultured bovine preantral follicles and on in vitro maturation of cumulus-oocyte complex. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Theriogenology, n. 86, p. 994-1003, 2016. |
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Idioma: |
Português |
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Conteúdo: |
Abstract The deleterious effect of heat stress (HS) on competence of oocytes from antral follicles is well recognized, but there is a lack of data regarding its impact on the viability and growth of preantral follicles. In this study, we used in vitro preantral follicle cultures to investigate the effects of HS on the following parameters: survival and development of primordial follicles after in vitro culture of ovarian fragments (experiment I); growth and antrum formation of isolated advanced secondary follicles (experiment II); and maturation rates after in vitro maturation (IVM) of cumulus?oocyte complexes (COCs) from antral follicles (>2?6 mm) grown in vivo (experiment III). Furthermore, the following end points were evaluated in all experiments: follicle/oocyte survival, reactive oxygen species (ROS), estradiol (E2) and progesterone (P4) production, as well asmRNA expression for select genes related to stress (HSP70) and apoptosis (MCL1 and BAX). In all experiments, HS consisted of exposing the structures (ovarian fragments, isolated preantral follicles and COCs) to 41 C for 12 hours and then to 38.5 C until the end of the culture (7 days for experiments I and II and 24 hours for experiment III). The temperature for the control group was held at 38.5 C for the entire culture period. Heat stress increased (P < 0.05) the percentage of developing follicles (intermediate, primary, and secondary follicles) at 12 hours and increased levels of ROS at all evaluated time points (12, 24 hours, and D7), when compared to the control (experiment I). Heat stress did not affect (P > 0.05) any identified end points when preantral follicles were cultured in their isolated form (experiment II). However, in experiment III, HS decreased (P < 0.05) both the rates of metaphase II after 24 hours and E2 production at 12 hours of IVM. Moreover, HS increased (P < 0.0001) levels of P4 after IVM and ROS production at every evaluated time point, compared with the control (12 and 24 hours). In conclusion, HS caused: (1) early activation of primordial follicles; (2) an increase in ROS production by early preantral follicles enclosed in ovarian tissue and by COCs; (3) a short-term reduction of E2 production by COCs; and (4) an increase in P4 secretion from COCs. However, HS did not affectin vitro culture of advanced isolated secondary follicles. Experimental evidence indicates that preantral follicles are less sensitive to HS than COC. MenosAbstract The deleterious effect of heat stress (HS) on competence of oocytes from antral follicles is well recognized, but there is a lack of data regarding its impact on the viability and growth of preantral follicles. In this study, we used in vitro preantral follicle cultures to investigate the effects of HS on the following parameters: survival and development of primordial follicles after in vitro culture of ovarian fragments (experiment I); growth and antrum formation of isolated advanced secondary follicles (experiment II); and maturation rates after in vitro maturation (IVM) of cumulus?oocyte complexes (COCs) from antral follicles (>2?6 mm) grown in vivo (experiment III). Furthermore, the following end points were evaluated in all experiments: follicle/oocyte survival, reactive oxygen species (ROS), estradiol (E2) and progesterone (P4) production, as well asmRNA expression for select genes related to stress (HSP70) and apoptosis (MCL1 and BAX). In all experiments, HS consisted of exposing the structures (ovarian fragments, isolated preantral follicles and COCs) to 41 C for 12 hours and then to 38.5 C until the end of the culture (7 days for experiments I and II and 24 hours for experiment III). The temperature for the control group was held at 38.5 C for the entire culture period. Heat stress increased (P < 0.05) the percentage of developing follicles (intermediate, primary, and secondary follicles) at 12 hours and increased levels of ROS at all evaluated time points... Mostrar Tudo |
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Palavras-Chave: |
Bovine; Oocyte; Preantral follicle. |
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Thesaurus Nal: |
heat stress; in vitro culture. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03440naa a2200325 a 4500
001 2062969
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aPAES, V. M.
245 $aEffect of heat stress on the survival and development of in vitro cultured bovine preantral follicles and on in vitro maturation of cumulus-oocyte complex.$h[electronic resource]
260 $c2016
520 $aAbstract The deleterious effect of heat stress (HS) on competence of oocytes from antral follicles is well recognized, but there is a lack of data regarding its impact on the viability and growth of preantral follicles. In this study, we used in vitro preantral follicle cultures to investigate the effects of HS on the following parameters: survival and development of primordial follicles after in vitro culture of ovarian fragments (experiment I); growth and antrum formation of isolated advanced secondary follicles (experiment II); and maturation rates after in vitro maturation (IVM) of cumulus?oocyte complexes (COCs) from antral follicles (>2?6 mm) grown in vivo (experiment III). Furthermore, the following end points were evaluated in all experiments: follicle/oocyte survival, reactive oxygen species (ROS), estradiol (E2) and progesterone (P4) production, as well asmRNA expression for select genes related to stress (HSP70) and apoptosis (MCL1 and BAX). In all experiments, HS consisted of exposing the structures (ovarian fragments, isolated preantral follicles and COCs) to 41 C for 12 hours and then to 38.5 C until the end of the culture (7 days for experiments I and II and 24 hours for experiment III). The temperature for the control group was held at 38.5 C for the entire culture period. Heat stress increased (P < 0.05) the percentage of developing follicles (intermediate, primary, and secondary follicles) at 12 hours and increased levels of ROS at all evaluated time points (12, 24 hours, and D7), when compared to the control (experiment I). Heat stress did not affect (P > 0.05) any identified end points when preantral follicles were cultured in their isolated form (experiment II). However, in experiment III, HS decreased (P < 0.05) both the rates of metaphase II after 24 hours and E2 production at 12 hours of IVM. Moreover, HS increased (P < 0.0001) levels of P4 after IVM and ROS production at every evaluated time point, compared with the control (12 and 24 hours). In conclusion, HS caused: (1) early activation of primordial follicles; (2) an increase in ROS production by early preantral follicles enclosed in ovarian tissue and by COCs; (3) a short-term reduction of E2 production by COCs; and (4) an increase in P4 secretion from COCs. However, HS did not affectin vitro culture of advanced isolated secondary follicles. Experimental evidence indicates that preantral follicles are less sensitive to HS than COC.
650 $aheat stress
650 $ain vitro culture
653 $aBovine
653 $aOocyte
653 $aPreantral follicle
700 1 $aVIEIRA, L. A.
700 1 $aCORREIA, H. H. V.
700 1 $aSA, N. A. R.
700 1 $aMOURA, A. A. A.
700 1 $aSALES, A. D.
700 1 $aRODRIGUES, A. P. R.
700 1 $aMAGALHÃES-PADILHA, D. M.
700 1 $aSANTOS, F. W.
700 1 $aAPGAR, G. A.
700 1 $aCAMPELLO, C. C.
700 1 $aCAMARGO, L. S. de A.
700 1 $aFIGUEIREDO, J. R.
773 $tTheriogenology$gn. 86, p. 994-1003, 2016.
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Embrapa Gado de Leite (CNPGL) |
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| 3. |  | PEDREIRA, C. G.; PEDREIRA, B. C. e; LARA, M. A. Leaf photosynthesis of Panicum spp. grasses as determined by level of insertion, portion of the leaf blade, and light intensity. In: ASA CSSA SSSA International Annual Meetings, 2011, San Antonio, Texas. Fundamentals for life: soil, crop, and environmental sciences. Madison: ASA, 2011.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrossilvipastoril. |
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| 7. | | TONATO, G.; GUARDA, V. DEL A.; LARA, M. A. S.; SARTURI, J. O.; SANTOS, P. M. Uso de dessecante no pré-emurchecimento de Brachiaria brizantha - cv Marandu visando a conservação deforragem, parâmetros morfológicos. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 44., Jaboticabal, SP. Anais... Jaboticabal: SBZ: UNESP, 2007. 1 CD-ROM| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 8. | | ABREU, U. G. P. de; EGITO, A. A.; GRATTAPAGLIA, D.; LARA, M. A. C. Variabilidade genética das matrizes do núcleo de conservação do bovino pantaneiro avaliada por meio do índice prioritário para conservação e polimorfismos protéicos. In: SIMPÓSIO DE RECURSOS GENÉTICOS PARA AMÉRICA LATINA Y EL CARIBE, SIRGEALC, 6., 2007, Chapingo, México. Por la valoración de los recursos genéticos para el desarrollo sustentable en América Latina y el Caribe: memoria. Chapingo: Universidad Autónoma Chapingo, 2007. p. 327| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 9. | | ABREU, U. G. P.; EGITO, A. A.; SANTOS, S. A.; GRATTAPAGLIA, D.; LARA, M. A. C. Variabilidade genética das matrizes do núcleo de conservação do bovino pantaneiro avaliada por meio do índice prioritário para conservação e polimorfismos proteícos. In: SIMPÓSIO DE RECURSOS GENÉTICOS PARA AMÉRICA LATINA Y EL CARIBE, SIRGEALC, 6., 2007, Chapingo, México. Por la valoración de los recursos genéticos para el desarrollo sustentable en América Latina y el Caribe: memoria. Chapingo: Universidad Autónoma Chapingo, 2007. p. 353| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 15. | | GUARDA, V. DEL A.; LARA, M. A. S.; SARTURI, J. O.; TONATO, F.; SANTOS, P. M. Parâmetros fisiológicos de Brachiaria brizantha - cv, Marandu, submetidos a doses de glifosato no processo de conservação de forragem. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 44., Jaboticabal, SP. Anais... Jaboticabal: SBZ: UNESP, 2007.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 19. | | ABREU, U. G. P. de; COBUCI, J. A.; PIMENTEL, C. M.; SERENO, J. R. B.; LARA, M. A. C. Analise da curva de crescimento da raca de bovino pantaneiro. In: SIMPOSIO DE RECURSOS GENETICOS PARA A AMERICA LATINA E CARIBE - SIRGEALC, 3.; REUNIAO LATINO AMERICANA DE ESPECIALISTAS EM ARACHIS, 3.; REUNIAO LATINO AMERICANA DE ESPECIALISTAS EM RECURSOS GENETICOS FLORESTAIS, 3., 2001, Londrina. Anais... Londrina: IAPAR, 2001. p.465-467.| Biblioteca(s): Embrapa Pantanal. |
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| 20. | | ABREU, U. G. P.; McMANUS, C.; MORENO-BERNAL, F.E.; LARA, M. A. C.; SERENO, J. R. B. Genetic and environmental factors influencing birth and 205 day weights of Pantaneiro calves. Archivos de Zootecnia, Cordoba, v.51, n.193/194, p.83-89, 2002.| Biblioteca(s): Embrapa Pantanal. |
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| Registros recuperados : 64 | |
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