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| Registros recuperados : 26 | |
| 2. |  | PERES, R. F. G.; CABRAL, D. D.; TETZNER, T. A. D. Avaliação terapêutica das bases farmacológicas: abamectin, doramectin, ivermectin e moxidectin em ovinos a nível de campo em Uberlândia, MG. In: CONGRESSO BRASILEIRO DE MEDICINA VETERINÁRIA, 31., 2004, São luis. A medicina veterinária no novo milênio: transformação social, preservação ambiental e segurança alimentar: resumos. São Luis, Sociedade Brasileira de Medicina Veterinária, 2004. Seção produção animal e agronegócio. 1 CD-ROM.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 8. | | SARAIVA, N. Z.; PERECIN, F.; MÉO, S. C.; FERREIRA, C. R.; TETZNER, T. A. D.; GARCIA, J. M. Demecolcine effects on microtubule kinetics and chemically assisted enucleation of bovine oocytes. Cloning and Stem Cells, v. 11, n. 1, p. 141-152, mar. 2009.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 9. | | SARAIVA, N. Z.; PERECIN, F.; MÉO, S. C.; FERREIRA, C. R.; TETZNER, T. A. D.; VANTINI, R.; GARCIA, J. M. Efeitos da demecolcina sobre a cinética da maturação nuclear e a migração dos grânulos corticais em oócitos bovinos. Acta Scientiae Veterinariae, v. 35, supl. 3, p. s1276, 2007; In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE TECNOLOGIA DE EMBRIÕES, 21., 2007, Salvador. Anais... Salvador: UFRGS, 2007. p. 1276.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 10. | | TETZNER, T. A. D.; SARAIVA, N. Z.; PERECIN, F.; NICIURA, S. C. M.; FERREIRA, C. R.; OLIVEIRA, C. S.; GARCIA, J. M. The effects of ovalbumin as a protein source during the in vitro production of bovine embryos. Revista Brasileira de Zootecnia, v. 40, n. 10, p. 2135-2141, oct. 2011.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 11. | | TETZNER, T. A. D.; SARAIVA, N. Z.; OLIVEIRA, C. S.; NICIURA, S. C. M.; SOUZA M. M.; LIMA, M. R.; GARCIA J. M. Effects of culture with ovalbumin in absence of fetal bovine serum and bovine serum albumin on in vitro production of cattle embryos. In: ANNUAL CONFERENCE OT THE INTERNATIONAL EMBRYO TRANSFER SOCIETY, 36., 2010, Cordoba. Proceedings... Córdoba: ITES, 2010; Reproduction, Fertility and development, v. 22, n. 1, p. 197, 2010.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 12. | | SARAIVA, N. Z.; OLIVEIRA, C. S.; TETZNER, T. A. D.; LIMA, M. R. de; NICIURA, S. C. M.; GARCIA, J. M. Effects of demecolcine on the meiotic cell-cycle and microtubular kinetics of activated bovine oocytes submitted to chemical enucleation. In: ANUAL CONFERENCE OF INTERNATIONAL EMBRYO TRANSFER SOCIETY, 24., Phoenix, Arizona. Phoenix: CSIRO, 2012 p. 119| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 13. | | SARAIVA, N. Z.; PERECIN, F.; MÉO, S. C.; FERREIRA, C. R.; TETZNER, T. A. D.; OLIVEIRA, J. C.; GARCIA, J. M. Effects of demecolcine on microtubule composition and chemically assisted enucleation of bovine oocytes. Reproduction, Fertility and Development, v. 20, n. 1, p. 107-108, 2008.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 14. | | TETZNER, T. A. D.; SARAIVA, N. Z.; PERECIN, F.; OLIVEIRA, C. S.; MONTEIRO, F. M.; LIMA, M. R.; NICIURA, S. C. M.; FERREIRA, C. R.; GARCIA, J. M. Effects of embryonic fluid and serum replacer as protein sources for in vitro maturation of bovine oocytes. In: INTERNATIONAL SYMPOSIUM ANIMAL BIOLOGY OF REPRODUCTIVE, 3., 2010, Águas de São Pedro: CBRA: USP/FMVZ, 2010| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 15. | | SARAIVA, N. Z.; OLIVEIRA, C. S.; TETZNER, T. A. D.; LIMA, M. R. de; NICIURA, S. C. M.; GARCIA, J. M. Expressão dos genes xist, g6pd e hspa1 em blastocistos bovinos reconstituídos por tn a partir de oócitos receptores produzidos por enucleação assistida quimicamente. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE TECNOLOGIA DE EMBRIÕES, 25., 2011, Cumbuco. O impacto das biotecnologias reprodutivas na saúde e produção animal - anais. Cumbuco: SBTE, 2011. p. 437| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 16. | | SARAIVA, N. Z.; OLIVEIRA, C. S.; TETZNER, T. A. D.; LIMA, M. R. de; MELO, D. S. de; NICIURA, S. C. M.; GARCIA, J. M. Chemically assisted enucleation results in higher G6PD expression in early bovine female embryos obtained by somatic cell nuclear transfer. Cellular Reprogramming, v. 14, n. 5, p. 1-11, 2012.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 17. | | SARAIVA, N. Z.; OLIVEIRA, C. S.; TETZNER, T. A. D.; SOUZA, M. M.; LIMA, M. R. de; NICIURA, S. C. M.; GARCIA, J. M. Bovine cytoplasts prepared by demecolcine-induced enucleation of activated oocytes. In: ANNUAL CONFERENCE OT THE INTERNATIONAL EMBRYO TRANSFER SOCIETY, 36., 2010, Cordoba. Proceedings... Córdoba: ITES, 2010; Reproduction, Fertility and development, v. 22, n. 1, 2010. p. 197| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 18. | | MEO, S. C.; FERREIRA, C. R.; PERECIN, F.; SARAIVA, N. Z.; TETZNER, T. A. D.; YAMAZAKI, W.; LEA, C. L. V.; MEIRELLES, F. V.; GARCIA, J. M. Karyoplast exchange between strontium- and 6-DMAP-parthenogenetically activated zygotes of cattle. Animal Reproduction Science, v. 116, n. 3-4, p. 381-385, dec. 2009.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 19. | | SARAIVA, N. Z.; OLIVEIRA, C. S.; TETZNER, T. A. D.; SOUZA, M. M.; LIMA, M. R.; NICIURA, S. C. M.; GARCIA, J. M. Métodos alternativos de enucleação oocitária utilizados na transferência nuclear em animais. Revista Brasileira de Reprodução Animal, v. 34, n. 4, p. 197-205, out./dez. 2010.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 20. | | TETZNER, T. A. D.; SARAIVA, N. Z.; PERECIN, F.; FERREIRA, C. R.; MÉO, S. C.; OLIVEIRA, C. S.; MELO, D. S.; MONTEIRO, F. M.; VANTINI, R.; GARCIA, J. M. Efeitos da substituição do soro fetal bovino (SFB) e da albumina sérica bovina (BSA) pela ovalbumina (OVA) na produção in vitro de embriões bovinos. Acta Scientiae Veterinariae, v. 35, supl. 3, p. s1181, 2007; In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE TECNOLOGIA DE EMBRIÕES, 21., 2007, Salvador. Anais... Salvador: UFRGS, 2007.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| Registros recuperados : 26 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
23/08/2012 |
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Data da última atualização: |
22/02/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
SARAIVA, N. Z.; OLIVEIRA, C. S.; TETZNER, T. A. D.; LIMA, M. R. de; MELO, D. S. de; NICIURA, S. C. M.; GARCIA, J. M. |
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Afiliação: |
NAIARA ZOCCAL SARAIVA, Universidade Estadual Paulista; CLARA SLADE OLIVEIRA, UNESP; TATIANE ALMEIDA DRUMMOND TETZNER, UNESP; MARINA RAGAGNIN DE LIMA, UNESP/JABOTICABAL; DANILAS SALINET DE MELO, UNESP/JABOTICABAL; SIMONE CRISTINA MEO NICIURA, CPPSE; JOAQUIM MANSANO GARCIA, UNESP/JABOTICABAL. |
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Título: |
Chemically assisted enucleation results in higher G6PD expression in early bovine female embryos obtained by somatic cell nuclear transfer. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Cellular Reprogramming, v. 14, n. 5, p. 1-11, 2012. |
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DOI: |
10.1089/cell.2011.0077 |
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Idioma: |
Inglês |
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Conteúdo: |
Despite extensive efforts, low efficiency is still an issue in bovine somatic cell nuclear transfer (SCNT). The hypothesis of our study was that the use of cytoplasts produced by chemically assisted enucleation (EN) would improve nuclear reprogramming in nuclear transfer (NT)?derived embryos because it results in lower damage and higher cytoplasm content than conventional EN. For that purpose, we investigated the expression of two X-linked genes: X inactive-specific transcript (XIST) and glucose 6-phosphate dehydrogenase (G6PD). In the first experiment, gene expression was assessed in day-7 female blastocysts from embryonic cell NT (ECNT) groups [conventional, ECNT conv; chemically assisted, ECNT deme (demecolcine)]. Where as in the ECNT conv group, only one embryo (25%; n = 4) expressed XIST transcripts, most embryos showed XIST expression (75%; n = 4) in the ECNT deme group. However, no significant differences in transcript abundance of XIST and G6PD were found when comparing the embryos from all groups. In a second experiment using somatic cells as nuclear donors, we evaluated gene expression profiles in female SCNT-derived embryos. No significant differences in relative abundance (RA) of XIST transcripts were observed among the groups. Nonetheless, higher ( p < 0.05) levels of G6PD were observed in SCNT deme and in vitro?derived groups in comparison to SCNT conv. To know whether higher G6PD expression in embryos derived from SCNT chemically assisted EN indicates higher metabolism in embryos considered of superior quality or if the presence of higher reactive oxygen species (ROS) levels generated by the increased oxygen consumption triggers G6PD activation, the expression of genes related to stress response should be investigated in embryos produced by that technique. MenosDespite extensive efforts, low efficiency is still an issue in bovine somatic cell nuclear transfer (SCNT). The hypothesis of our study was that the use of cytoplasts produced by chemically assisted enucleation (EN) would improve nuclear reprogramming in nuclear transfer (NT)?derived embryos because it results in lower damage and higher cytoplasm content than conventional EN. For that purpose, we investigated the expression of two X-linked genes: X inactive-specific transcript (XIST) and glucose 6-phosphate dehydrogenase (G6PD). In the first experiment, gene expression was assessed in day-7 female blastocysts from embryonic cell NT (ECNT) groups [conventional, ECNT conv; chemically assisted, ECNT deme (demecolcine)]. Where as in the ECNT conv group, only one embryo (25%; n = 4) expressed XIST transcripts, most embryos showed XIST expression (75%; n = 4) in the ECNT deme group. However, no significant differences in transcript abundance of XIST and G6PD were found when comparing the embryos from all groups. In a second experiment using somatic cells as nuclear donors, we evaluated gene expression profiles in female SCNT-derived embryos. No significant differences in relative abundance (RA) of XIST transcripts were observed among the groups. Nonetheless, higher ( p < 0.05) levels of G6PD were observed in SCNT deme and in vitro?derived groups in comparison to SCNT conv. To know whether higher G6PD expression in embryos derived from SCNT chemically assisted EN indicates higher m... Mostrar Tudo |
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Palavras-Chave: |
Higher G6PD; Nuclear transfer; Somatic cell. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
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100 1 $aSARAIVA, N. Z.
245 $aChemically assisted enucleation results in higher G6PD expression in early bovine female embryos obtained by somatic cell nuclear transfer.$h[electronic resource]
260 $c2012
520 $aDespite extensive efforts, low efficiency is still an issue in bovine somatic cell nuclear transfer (SCNT). The hypothesis of our study was that the use of cytoplasts produced by chemically assisted enucleation (EN) would improve nuclear reprogramming in nuclear transfer (NT)?derived embryos because it results in lower damage and higher cytoplasm content than conventional EN. For that purpose, we investigated the expression of two X-linked genes: X inactive-specific transcript (XIST) and glucose 6-phosphate dehydrogenase (G6PD). In the first experiment, gene expression was assessed in day-7 female blastocysts from embryonic cell NT (ECNT) groups [conventional, ECNT conv; chemically assisted, ECNT deme (demecolcine)]. Where as in the ECNT conv group, only one embryo (25%; n = 4) expressed XIST transcripts, most embryos showed XIST expression (75%; n = 4) in the ECNT deme group. However, no significant differences in transcript abundance of XIST and G6PD were found when comparing the embryos from all groups. In a second experiment using somatic cells as nuclear donors, we evaluated gene expression profiles in female SCNT-derived embryos. No significant differences in relative abundance (RA) of XIST transcripts were observed among the groups. Nonetheless, higher ( p < 0.05) levels of G6PD were observed in SCNT deme and in vitro?derived groups in comparison to SCNT conv. To know whether higher G6PD expression in embryos derived from SCNT chemically assisted EN indicates higher metabolism in embryos considered of superior quality or if the presence of higher reactive oxygen species (ROS) levels generated by the increased oxygen consumption triggers G6PD activation, the expression of genes related to stress response should be investigated in embryos produced by that technique.
653 $aHigher G6PD
653 $aNuclear transfer
653 $aSomatic cell
700 1 $aOLIVEIRA, C. S.
700 1 $aTETZNER, T. A. D.
700 1 $aLIMA, M. R. de
700 1 $aMELO, D. S. de
700 1 $aNICIURA, S. C. M.
700 1 $aGARCIA, J. M.
773 $tCellular Reprogramming$gv. 14, n. 5, p. 1-11, 2012.
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