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| Registros recuperados : 4 | |
| 1. |  | LIMA, M. da P.; ZOGHBI, M. das G. B.; ANDRADE, E. H. A.; SILVA, T. M. D.; FERNANDES, C. S. Constituintes voláteis das folhas e dos galhos de Cinnamomum zeylanicum Blume (Lauraceae). Acta Amazonica, Manaus, v. 35, n. 3, p. 363-366, jul./set. 2005.| Biblioteca(s): Embrapa Florestas. |
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| 3. | | LIMA, M. da P.; SILVA, T. M. D.; SILVA, J. D. da; ZOGHBI, M. das G. B.; ANDRADE, E. H. A. Essential oil composition of leaf and fine stem of Aniba canelilla (Kunth) Mez from Manaus, Brazil. Acta Amazonica, Manaus, v. 34, n. 2, p. 329-330, abr./jun. 2004.| Biblioteca(s): Embrapa Florestas. |
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| 4. | | CARVALHO, L. E. de; LIMA, M. da P.; MÁXIMO, A. da C.; PEREIRA. E. C. da S.; MOREIRA, A. dos S. M.; FERREIRA, A. G.; VÉRAS, S. de M.; SOUZA, M. G. de. Estudo em raiz e ráquis foliar de Spathelia excelsa: fitoquímica e atividade frente ao fungo Moniliophthora perniciosa associado ao cupuaçuzeiro (Theobroma grandiflorum). Química Nova, v. 35, n. 11, p. 2237-2240, 2012.| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| Registros recuperados : 4 | |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
12/12/2018 |
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Data da última atualização: |
24/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
WOHLRES-VIANA, S.; ARASHIRO, E. K. N.; MINARE, T. P.; FERNANDES, C. A. C.; GRAZIA, J. G. V.; SIQUEIRA, L. G. B.; MACHADO, M. A.; VIANA, J. H. M. |
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Afiliação: |
S. WOHLRES-VIANA, UFJF; E. K. N. ARASHIRO, UFF; T. P. MINARE, Universidade José do Rosario Vellano, Alfenas, MG; C. A. C. FERNANDES, Universidade Jose do Rosario Vellano / Biotran Biotecnologia Animal, Alfenas, MG; J. G. V. GRAZIA, UFMG; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; MARCO ANTONIO MACHADO, CNPGL; JOAO HENRIQUE MOREIRA VIANA, Cenargen. |
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Título: |
Differential expression of LHCGR and its isoforms is associated to the variability in superovulation responses of Gir cattle. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Theriogenology, v. 126, p. 68-74, 2019. |
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DOI: |
10.1016/j.theriogenology.2018.12.004 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract The aim of this study was to evaluate the pattern of expression of LHCGR isoforms in Gir heifers characterized as good (10.3 ± 1.2 ova/embryos per flush, n = 5) or poor responders (1.1 ± 0.3 ova/embryos per flush, n = 5) to superovulation protocols. In both groups, an adapted ultrasound-guided follicular aspiration system was used to collect granulosa cells from 8 mm follicles formed either during a synchronized, non-stimulated follicular wave (no stimulation control, NS) or on the fourth day of a superovulation protocol (SOV) induced with 200 IU of pFSH. The recovered follicular fluid was centrifuged and granulosa cells were washed with NaCl 0.9% and kept in RNAlater®. RNA extraction was performed using a commercial RNeasy Micro Kit and eluted samples were quantified and reverse transcribed using the commercial Superscript III kit. cDNA samples were amplified by real-time PCR using a primer to target LH/hCG receptor gene - not selective for LHCGR isoforms (total LHCGR) - and four sets of isoforms selective primers (S1, S10, S10 + 11, and S11). Analyses were performed using the REST software and expression levels are shown as mean ± SEM. Under physiological conditions (NS), poor responders had a higher expression of total LHCGR (4.9 ± 1.7 fold-change, P < 0.01) as well as isoforms S10, S11 and S10 + 11, compared to good responders. In both phenotypes, superovulation down-regulated total LHCGR expression (-0.5 ± 0.2 and -0.9 ± 0.0 for good and poor responders, respectively; P < 0.05). However, in poor responders the exogenous FSH treatment up-regulated the S10 (2.4 ± 2.0; P < 0.05), S10 + 11 (3.8 ± 3.2; P < 0.01), and S1 isoforms (1.8 ± 1.3; P < 0.05), compared to good responders We conclude that down-regulation of total LHCGR, associated to up-regulation of their inactive isoforms, may have compromised follicle development and thus contributed to the low efficiency of superovulation in heifers with a poor responder phenotype. MenosAbstract The aim of this study was to evaluate the pattern of expression of LHCGR isoforms in Gir heifers characterized as good (10.3 ± 1.2 ova/embryos per flush, n = 5) or poor responders (1.1 ± 0.3 ova/embryos per flush, n = 5) to superovulation protocols. In both groups, an adapted ultrasound-guided follicular aspiration system was used to collect granulosa cells from 8 mm follicles formed either during a synchronized, non-stimulated follicular wave (no stimulation control, NS) or on the fourth day of a superovulation protocol (SOV) induced with 200 IU of pFSH. The recovered follicular fluid was centrifuged and granulosa cells were washed with NaCl 0.9% and kept in RNAlater®. RNA extraction was performed using a commercial RNeasy Micro Kit and eluted samples were quantified and reverse transcribed using the commercial Superscript III kit. cDNA samples were amplified by real-time PCR using a primer to target LH/hCG receptor gene - not selective for LHCGR isoforms (total LHCGR) - and four sets of isoforms selective primers (S1, S10, S10 + 11, and S11). Analyses were performed using the REST software and expression levels are shown as mean ± SEM. Under physiological conditions (NS), poor responders had a higher expression of total LHCGR (4.9 ± 1.7 fold-change, P < 0.01) as well as isoforms S10, S11 and S10 + 11, compared to good responders. In both phenotypes, superovulation down-regulated total LHCGR expression (-0.5 ± 0... Mostrar Tudo |
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Palavras-Chave: |
In vivo embryo production. |
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Thesaurus NAL: |
Embryo transfer; Luteinizing hormone. |
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Categoria do assunto: |
--
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02857naa a2200253 a 4500
001 2106166
005 2023-01-24
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1016/j.theriogenology.2018.12.004$2DOI
100 1 $aWOHLRES-VIANA, S.
245 $aDifferential expression of LHCGR and its isoforms is associated to the variability in superovulation responses of Gir cattle.$h[electronic resource]
260 $c2019
520 $aAbstract The aim of this study was to evaluate the pattern of expression of LHCGR isoforms in Gir heifers characterized as good (10.3 ± 1.2 ova/embryos per flush, n = 5) or poor responders (1.1 ± 0.3 ova/embryos per flush, n = 5) to superovulation protocols. In both groups, an adapted ultrasound-guided follicular aspiration system was used to collect granulosa cells from 8 mm follicles formed either during a synchronized, non-stimulated follicular wave (no stimulation control, NS) or on the fourth day of a superovulation protocol (SOV) induced with 200 IU of pFSH. The recovered follicular fluid was centrifuged and granulosa cells were washed with NaCl 0.9% and kept in RNAlater®. RNA extraction was performed using a commercial RNeasy Micro Kit and eluted samples were quantified and reverse transcribed using the commercial Superscript III kit. cDNA samples were amplified by real-time PCR using a primer to target LH/hCG receptor gene - not selective for LHCGR isoforms (total LHCGR) - and four sets of isoforms selective primers (S1, S10, S10 + 11, and S11). Analyses were performed using the REST software and expression levels are shown as mean ± SEM. Under physiological conditions (NS), poor responders had a higher expression of total LHCGR (4.9 ± 1.7 fold-change, P < 0.01) as well as isoforms S10, S11 and S10 + 11, compared to good responders. In both phenotypes, superovulation down-regulated total LHCGR expression (-0.5 ± 0.2 and -0.9 ± 0.0 for good and poor responders, respectively; P < 0.05). However, in poor responders the exogenous FSH treatment up-regulated the S10 (2.4 ± 2.0; P < 0.05), S10 + 11 (3.8 ± 3.2; P < 0.01), and S1 isoforms (1.8 ± 1.3; P < 0.05), compared to good responders We conclude that down-regulation of total LHCGR, associated to up-regulation of their inactive isoforms, may have compromised follicle development and thus contributed to the low efficiency of superovulation in heifers with a poor responder phenotype.
650 $aEmbryo transfer
650 $aLuteinizing hormone
653 $aIn vivo embryo production
700 1 $aARASHIRO, E. K. N.
700 1 $aMINARE, T. P.
700 1 $aFERNANDES, C. A. C.
700 1 $aGRAZIA, J. G. V.
700 1 $aSIQUEIRA, L. G. B.
700 1 $aMACHADO, M. A.
700 1 $aVIANA, J. H. M.
773 $tTheriogenology$gv. 126, p. 68-74, 2019.
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