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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
06/11/2002 |
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Data da última atualização: |
06/11/2002 |
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Autoria: |
ZHANG, J.; MASSMANN, G. A.; MIRABILE, C. P.; FIGUEROA, J. P. |
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Título: |
Nonpregnant sheep uterine type I and type III nitric oxide synthase expression is differentially regulated by estrogen. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Biology of Reproduction, v. 60, n. 5, p. 1198-1203, 1999. |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to characterize the effect of estrogen on lhe expression of neuronal and endothelial isoforms of nitric oxide (NO) synthase (NOS) in myometrium, endometrium, and caruncle (nonglandular endometrium) in nonpregnant sheep. Twenty sheep were castrated during synchronized estrus (Days 14-16) and 4 days after surgery treated i.v. through lhe jugular with 100 ug/day of estradiol-17Betha for 5 (n = 6) or 8 (n = 6) days or with vehicle (n = 8). Nitric oxide synthase mRNA was measured by ribonuclease protection assar, and NOS protein mass was measured by Western immunoblotting. Data were analyzed by ANOVA and Tukey's testo The three distinct uterine compartments studied contained lhe mRNA and protein for lhe neuronal (type I NOS) and lhe endothelial (type 111 NOS) isoforms of NOS. However, no inducible NOS was detected. Estrogen exhibited a differential effect on NOS expression in a tissue compartment- and NOS isoform-specific manner. In myometrium and caruncles, but not in endometrium, type I NOS mRNA and protein mass increased significantly (p < 0.05) after 5 or 8 days of estrogen. In contrast, type 111 NOS increased significantly in myometrium only after 8 days, whereas in endometrium and caruncles the increase was significant in the 5-day treatment group (p < 0.05). We conclude that the expression of type I NOS and type 111 NOS in the uterus are differentially regulated by estrogen. This differential regulation suggests that the NO produced within the uterus serves more than one physiological role. In myometrium it mar be a uterorelaxant and regulate glucose utilization, and in endometrium and myometrium it mar regulate blood flow. MenosThe aim of this study was to characterize the effect of estrogen on lhe expression of neuronal and endothelial isoforms of nitric oxide (NO) synthase (NOS) in myometrium, endometrium, and caruncle (nonglandular endometrium) in nonpregnant sheep. Twenty sheep were castrated during synchronized estrus (Days 14-16) and 4 days after surgery treated i.v. through lhe jugular with 100 ug/day of estradiol-17Betha for 5 (n = 6) or 8 (n = 6) days or with vehicle (n = 8). Nitric oxide synthase mRNA was measured by ribonuclease protection assar, and NOS protein mass was measured by Western immunoblotting. Data were analyzed by ANOVA and Tukey's testo The three distinct uterine compartments studied contained lhe mRNA and protein for lhe neuronal (type I NOS) and lhe endothelial (type 111 NOS) isoforms of NOS. However, no inducible NOS was detected. Estrogen exhibited a differential effect on NOS expression in a tissue compartment- and NOS isoform-specific manner. In myometrium and caruncles, but not in endometrium, type I NOS mRNA and protein mass increased significantly (p < 0.05) after 5 or 8 days of estrogen. In contrast, type 111 NOS increased significantly in myometrium only after 8 days, whereas in endometrium and caruncles the increase was significant in the 5-day treatment group (p < 0.05). We conclude that the expression of type I NOS and type 111 NOS in the uterus are differentially regulated by estrogen. This differential regulation suggests that the NO produced within the ute... Mostrar Tudo |
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Thesagro: |
Endocrinologia; Estrógeno; Ovino; Prenhez; Reprodução Animal; Útero. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02338naa a2200229 a 4500
001 1528831
005 2002-11-06
008 1999 bl uuuu u00u1 u #d
100 1 $aZHANG, J.
245 $aNonpregnant sheep uterine type I and type III nitric oxide synthase expression is differentially regulated by estrogen.
260 $c1999
520 $aThe aim of this study was to characterize the effect of estrogen on lhe expression of neuronal and endothelial isoforms of nitric oxide (NO) synthase (NOS) in myometrium, endometrium, and caruncle (nonglandular endometrium) in nonpregnant sheep. Twenty sheep were castrated during synchronized estrus (Days 14-16) and 4 days after surgery treated i.v. through lhe jugular with 100 ug/day of estradiol-17Betha for 5 (n = 6) or 8 (n = 6) days or with vehicle (n = 8). Nitric oxide synthase mRNA was measured by ribonuclease protection assar, and NOS protein mass was measured by Western immunoblotting. Data were analyzed by ANOVA and Tukey's testo The three distinct uterine compartments studied contained lhe mRNA and protein for lhe neuronal (type I NOS) and lhe endothelial (type 111 NOS) isoforms of NOS. However, no inducible NOS was detected. Estrogen exhibited a differential effect on NOS expression in a tissue compartment- and NOS isoform-specific manner. In myometrium and caruncles, but not in endometrium, type I NOS mRNA and protein mass increased significantly (p < 0.05) after 5 or 8 days of estrogen. In contrast, type 111 NOS increased significantly in myometrium only after 8 days, whereas in endometrium and caruncles the increase was significant in the 5-day treatment group (p < 0.05). We conclude that the expression of type I NOS and type 111 NOS in the uterus are differentially regulated by estrogen. This differential regulation suggests that the NO produced within the uterus serves more than one physiological role. In myometrium it mar be a uterorelaxant and regulate glucose utilization, and in endometrium and myometrium it mar regulate blood flow.
650 $aEndocrinologia
650 $aEstrógeno
650 $aOvino
650 $aPrenhez
650 $aReprodução Animal
650 $aÚtero
700 1 $aMASSMANN, G. A.
700 1 $aMIRABILE, C. P.
700 1 $aFIGUEROA, J. P.
773 $tBiology of Reproduction$gv. 60, n. 5, p. 1198-1203, 1999.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 6 | |
| 1. |  | SILVA, M. O. C. C. B. da; CARPANEZZI, A. A. Identificação e diferenciação das espécies nativas de Rubus encontradas em alguns pontos da Região Metropolitana de Curitiba-PR. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 2., 2003, Colombo. Anais. Colombo: Embrapa Florestas, 2003. 019R. 1 CD-Rom. (Embrapa Florestas. Documentos, 86). Organizado por Patricia Póvoa de Mattos, Celso Garcia Auer, Rejane Stumpf Sberze, Katia Regina Pichelli e Paulo César Botosso.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 3. | | SILVA, M. O. C. C. B. da; CARPANEZZI, A. A. Produção de mudas de Cortaderia selloana (Schultes) Ascherson & Graebner por divisão de touceira: resultados preliminares. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 2., 2003, Colombo. Anais. Colombo: Embrapa Florestas, 2003. 014R. 1 CD-ROM. (Embrapa Florestas. Documentos, 86). Organizado por Patricia Póvoa de Mattos, Celso Garcia Auer, Rejane Stumpf Sberze, Katia Regina Pichelli e Paulo César Botosso.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 5. | | BAGGIO, A, J.; CARPANEZZI, A. A.; SOARES, A. de O.; SILVA, M. O. C. C. B. da. Regeneração de bracatingais do sistema agroflorestal tradicional sem uso do fogo. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 5., 2004, Curitiba. SAFs: desenvolvimento com proteção ambiental: anais. Colombo: Embrapa Florestas, 2004. p. 64-66. (Embrapa Florestas. Documentos, 98).| Biblioteca(s): Embrapa Florestas. |
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| 6. | | SEQUEIRA, F. P.; SILVA, M. O. C. C. B. da; ZUFFELLATO-RIBAS, K. C.; CARPANEZZI, A. A. Produção de mudas de Ipomoea acuminata (Vahl) Roem. & Schult. por estaquia: resultados preliminares. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 2., 2003, Colombo. Anais. Colombo: Embrapa Florestas, 2003. 015R. 1 Cd-Rom. (Embrapa Florestas. Documentos, 86). Organizado por Patricia Póvoa de Mattos, Celso Garcia Auer, Rejane Stumpf Sberze, Katia Regina Pichelli e Paulo César Botosso.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 6 | |
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