Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult rats

Detalhes bibliográficos
Autor(a) principal: Silva, Sandra Maria Souza da
Data de Publicação: 2020
Outros Autores: Elias, Laíse de Souza, Silva, Romildo Luciano da, Medeiros, Paloma Lys de, Vieira, Jeymesson Raphael Cardoso, Teixeira, Álvaro Aguiar Coelho, Wanderley-Teixeira, Valéria
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa e Ensino em Ciências Exatas e da Natureza
Texto Completo: https://cfp.revistas.ufcg.edu.br/cfp/index.php/RPECEN/article/view/1597
Resumo: Cloridrato de cimetidina, um bloqueador de receptores H2 das células parietais gástricas, que age reduzindo a secreção de ácido no estômago e tem sido estudado como substância xenoestrogênica. O uso crônico da cimetidina produz distúrbios homonais e toxidade no aparelho reprodutor masculino, além de reduzir o estradiol 2-hidroxilado e aumentar níveis séricos de estradiol e prolactina em mulheres, levando a hiperprolactinemia, que pode ser fator de risco para o câncer. A melatonina, neurohormônio sintetizado pela glândula pineal tem importante papel na função reprodutiva, regulando a produção de estrógeno, progesterrona e prolactina. O estudo testou a hipótese de que a melatonina pode bloquear ou reduzir os efeitos estrogênicos da cimetidina no estroma uterino, interferindo nos receptores de estrógeno, no teor de fibras colágenas e nos níveis hormonais em ratas adultas. Quarenta e cinco (45) ratas albinas divididas em três grupos: I – tratadas com placebo (controle); II – tratado com cimetidina (50 mg/kg) e III – tratado com cimetidina (50 mg/kg) associada à melatonina (200 μg/100 g). Os experimentos foram conduzidos por 7, 14 e 19 dias. Nos grupos tratados apenas com cimetidina, observou-se marcações mais intensas dos receptores REα, maior distribuição das fibras colágenas no endométrio, elevação dos níveis séricos de estrogênio, prolactina e redução da progesterona, nos animais tratados por 19 dias. Na associação cimetidina e melatonina, acredita-se que a melatonina bloqueou esses efeitos. A melatonina tem atividade citoprotetora para efeitos crônicos da cimetidina no estroma endometrial, por reduzir ou prevenir o aumento da síntese de fibras de colágeno pelos fibroblastos regulando a atividade do estrogênio sérico, bem como a expressão de seus receptores endometriais, além de manter os níveis normais de progesterona e prolactina.Palavras chave: Melatonina, receptor de estrógeno, xenoestrógeno, morfometria, níveis hormonais.
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spelling Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult ratsCloridrato de cimetidina, um bloqueador de receptores H2 das células parietais gástricas, que age reduzindo a secreção de ácido no estômago e tem sido estudado como substância xenoestrogênica. O uso crônico da cimetidina produz distúrbios homonais e toxidade no aparelho reprodutor masculino, além de reduzir o estradiol 2-hidroxilado e aumentar níveis séricos de estradiol e prolactina em mulheres, levando a hiperprolactinemia, que pode ser fator de risco para o câncer. A melatonina, neurohormônio sintetizado pela glândula pineal tem importante papel na função reprodutiva, regulando a produção de estrógeno, progesterrona e prolactina. O estudo testou a hipótese de que a melatonina pode bloquear ou reduzir os efeitos estrogênicos da cimetidina no estroma uterino, interferindo nos receptores de estrógeno, no teor de fibras colágenas e nos níveis hormonais em ratas adultas. Quarenta e cinco (45) ratas albinas divididas em três grupos: I – tratadas com placebo (controle); II – tratado com cimetidina (50 mg/kg) e III – tratado com cimetidina (50 mg/kg) associada à melatonina (200 μg/100 g). Os experimentos foram conduzidos por 7, 14 e 19 dias. Nos grupos tratados apenas com cimetidina, observou-se marcações mais intensas dos receptores REα, maior distribuição das fibras colágenas no endométrio, elevação dos níveis séricos de estrogênio, prolactina e redução da progesterona, nos animais tratados por 19 dias. Na associação cimetidina e melatonina, acredita-se que a melatonina bloqueou esses efeitos. A melatonina tem atividade citoprotetora para efeitos crônicos da cimetidina no estroma endometrial, por reduzir ou prevenir o aumento da síntese de fibras de colágeno pelos fibroblastos regulando a atividade do estrogênio sérico, bem como a expressão de seus receptores endometriais, além de manter os níveis normais de progesterona e prolactina.Palavras chave: Melatonina, receptor de estrógeno, xenoestrógeno, morfometria, níveis hormonais.Unidade Acadêmica de Ciências Exatas e da Natureza/CFP/UFCGSilva, Sandra Maria Souza daElias, Laíse de SouzaSilva, Romildo Luciano daMedeiros, Paloma Lys deVieira, Jeymesson Raphael CardosoTeixeira, Álvaro Aguiar CoelhoWanderley-Teixeira, Valéria2020-12-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://cfp.revistas.ufcg.edu.br/cfp/index.php/RPECEN/article/view/159710.29215/pecen.v4i0.1597Pesquisa e Ensino em Ciências Exatas e da Natureza; v. 4 (2020): Pesquisa e Ensino em Ciências Exatas e da Natureza; 01-142526-823610.29215/pecen.v4i0reponame:Pesquisa e Ensino em Ciências Exatas e da Naturezainstname:Universidade Federal de Campina Grande (UFCG)instacron:UFCGporhttps://cfp.revistas.ufcg.edu.br/cfp/index.php/RPECEN/article/view/1597/pdf/*ref*/Adriaens I., Jacquet P., Cortvrindt R., Janssen K. & Smitz J. (2006) Melatonin has dose-dependent effects on folliculogenesis, oocyte maturation capacity and steroidogenesis. Toxicology, 228: 333–343. I: http://dx.doi.org/10.1016/j.tox.2006.09.018/*ref*/Akingbemi B.T., Sottas C.M., Koulova A.I., Klinefelter G.R. & Hardy M.P. (2004) The inhibition of testicular steroidogenesis by the xenoestrogen bisphenol A is associated with reduced pituitary luteinizing hormone secretion and decreased steroidogenic enzyme gene expression in rat Leydig cells. Endocrinology, 145(2): 592–603. http://dx.doi.org/10.1210/en.2003-1174/*ref*/Bredfeldt T.G., Greathouse K.L., Safe S.H., Hung M.C., Bedford M.T. & Walker C.L. (2010) Xenoestrogen-induced regulation of EZH2 and histone methylation via estrogen receptor signaling to PI3K/AKT. Molecular Endocrinology, 24(5): 993–1006. https://doi.org/10.1210/me.2009-0438/*ref*/Bromer J.G., Zhou Y., Taylor M.B., Doherty L. & Taylor H.S. (2010) Bisphenol-A exposure in utero leads to epigenetic alterations in the developmental programming of uterine estrogen response. Federation of American Societies for Experimental Biology, 24: 2273–2280. https://doi.org/10.1096/fj.09-140533/*ref*/Christin-Maître S., Delemer B., Touraine P. & Young J. (2007) Prolactinoma and estrogens: pregnancy, contraception and hormonal replacement therapy. Annales d'Endocrinologie, 68: 106–112. https://doi.org/10.1016/j.ando.2007.03.008/*ref*/Close F.T. & Freeman M.E. (1997) Effects of ovarian steroid hormones on dopamine-controlled prolactin secretory responses in vitro. Neuroendocrinology, 65: 430–435. https://doi.org/10.1159/000127206/*ref*/Cotton R.B., Shah L.P., Stanley D.P., Ehinger N.J., Brown N., Shelton E.L., Slaughter J.C., Baldwin H.S., Paria B.C. & Reese J. (2013) Cimetidine–associated patent ductus arteriosus is mediated via a cytochrome P450 mechanism independent of H2 receptor antagonism. 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Journal of Comparative Neurology, 522: 358–371. https://doi.org/10.1002/cne.23400Direitos autorais 2020 Autor e Revista mantêm os direitos da publicaçãoinfo:eu-repo/semantics/openAccess2022-08-31T14:45:02Zoai:ojs.cfp.revistas.ufcg.edu.br:article/1597Revistahttps://cfp.revistas.ufcg.edu.br/cfp/index.php/RPECENPUBhttps://cfp.revistas.ufcg.edu.br/cfp/index.php/RPECEN/oai||cienciasexatasenatureza@gmail.com2526-82362526-8236opendoar:2022-08-31T14:45:02Pesquisa e Ensino em Ciências Exatas e da Natureza - Universidade Federal de Campina Grande (UFCG)false
dc.title.none.fl_str_mv Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult rats
title Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult rats
spellingShingle Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult rats
Silva, Sandra Maria Souza da
title_short Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult rats
title_full Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult rats
title_fullStr Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult rats
title_full_unstemmed Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult rats
title_sort Associative administration of cimetidine and exogenous melatonin on the endometrial receptors of estrogen, collagen and hormone levels in adult rats
author Silva, Sandra Maria Souza da
author_facet Silva, Sandra Maria Souza da
Elias, Laíse de Souza
Silva, Romildo Luciano da
Medeiros, Paloma Lys de
Vieira, Jeymesson Raphael Cardoso
Teixeira, Álvaro Aguiar Coelho
Wanderley-Teixeira, Valéria
author_role author
author2 Elias, Laíse de Souza
Silva, Romildo Luciano da
Medeiros, Paloma Lys de
Vieira, Jeymesson Raphael Cardoso
Teixeira, Álvaro Aguiar Coelho
Wanderley-Teixeira, Valéria
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv
dc.contributor.author.fl_str_mv Silva, Sandra Maria Souza da
Elias, Laíse de Souza
Silva, Romildo Luciano da
Medeiros, Paloma Lys de
Vieira, Jeymesson Raphael Cardoso
Teixeira, Álvaro Aguiar Coelho
Wanderley-Teixeira, Valéria
description Cloridrato de cimetidina, um bloqueador de receptores H2 das células parietais gástricas, que age reduzindo a secreção de ácido no estômago e tem sido estudado como substância xenoestrogênica. O uso crônico da cimetidina produz distúrbios homonais e toxidade no aparelho reprodutor masculino, além de reduzir o estradiol 2-hidroxilado e aumentar níveis séricos de estradiol e prolactina em mulheres, levando a hiperprolactinemia, que pode ser fator de risco para o câncer. A melatonina, neurohormônio sintetizado pela glândula pineal tem importante papel na função reprodutiva, regulando a produção de estrógeno, progesterrona e prolactina. O estudo testou a hipótese de que a melatonina pode bloquear ou reduzir os efeitos estrogênicos da cimetidina no estroma uterino, interferindo nos receptores de estrógeno, no teor de fibras colágenas e nos níveis hormonais em ratas adultas. Quarenta e cinco (45) ratas albinas divididas em três grupos: I – tratadas com placebo (controle); II – tratado com cimetidina (50 mg/kg) e III – tratado com cimetidina (50 mg/kg) associada à melatonina (200 μg/100 g). Os experimentos foram conduzidos por 7, 14 e 19 dias. Nos grupos tratados apenas com cimetidina, observou-se marcações mais intensas dos receptores REα, maior distribuição das fibras colágenas no endométrio, elevação dos níveis séricos de estrogênio, prolactina e redução da progesterona, nos animais tratados por 19 dias. Na associação cimetidina e melatonina, acredita-se que a melatonina bloqueou esses efeitos. A melatonina tem atividade citoprotetora para efeitos crônicos da cimetidina no estroma endometrial, por reduzir ou prevenir o aumento da síntese de fibras de colágeno pelos fibroblastos regulando a atividade do estrogênio sérico, bem como a expressão de seus receptores endometriais, além de manter os níveis normais de progesterona e prolactina.Palavras chave: Melatonina, receptor de estrógeno, xenoestrógeno, morfometria, níveis hormonais.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-20
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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format article
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dc.identifier.uri.fl_str_mv https://cfp.revistas.ufcg.edu.br/cfp/index.php/RPECEN/article/view/1597
10.29215/pecen.v4i0.1597
url https://cfp.revistas.ufcg.edu.br/cfp/index.php/RPECEN/article/view/1597
identifier_str_mv 10.29215/pecen.v4i0.1597
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language por
dc.relation.none.fl_str_mv https://cfp.revistas.ufcg.edu.br/cfp/index.php/RPECEN/article/view/1597/pdf
/*ref*/Adriaens I., Jacquet P., Cortvrindt R., Janssen K. & Smitz J. (2006) Melatonin has dose-dependent effects on folliculogenesis, oocyte maturation capacity and steroidogenesis. Toxicology, 228: 333–343. I: http://dx.doi.org/10.1016/j.tox.2006.09.018
/*ref*/Akingbemi B.T., Sottas C.M., Koulova A.I., Klinefelter G.R. & Hardy M.P. (2004) The inhibition of testicular steroidogenesis by the xenoestrogen bisphenol A is associated with reduced pituitary luteinizing hormone secretion and decreased steroidogenic enzyme gene expression in rat Leydig cells. Endocrinology, 145(2): 592–603. http://dx.doi.org/10.1210/en.2003-1174
/*ref*/Bredfeldt T.G., Greathouse K.L., Safe S.H., Hung M.C., Bedford M.T. & Walker C.L. (2010) Xenoestrogen-induced regulation of EZH2 and histone methylation via estrogen receptor signaling to PI3K/AKT. Molecular Endocrinology, 24(5): 993–1006. https://doi.org/10.1210/me.2009-0438
/*ref*/Bromer J.G., Zhou Y., Taylor M.B., Doherty L. & Taylor H.S. (2010) Bisphenol-A exposure in utero leads to epigenetic alterations in the developmental programming of uterine estrogen response. Federation of American Societies for Experimental Biology, 24: 2273–2280. https://doi.org/10.1096/fj.09-140533
/*ref*/Christin-Maître S., Delemer B., Touraine P. & Young J. (2007) Prolactinoma and estrogens: pregnancy, contraception and hormonal replacement therapy. Annales d'Endocrinologie, 68: 106–112. https://doi.org/10.1016/j.ando.2007.03.008
/*ref*/Close F.T. & Freeman M.E. (1997) Effects of ovarian steroid hormones on dopamine-controlled prolactin secretory responses in vitro. Neuroendocrinology, 65: 430–435. https://doi.org/10.1159/000127206
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dc.rights.driver.fl_str_mv Direitos autorais 2020 Autor e Revista mantêm os direitos da publicação
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2020 Autor e Revista mantêm os direitos da publicação
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Unidade Acadêmica de Ciências Exatas e da Natureza/CFP/UFCG
publisher.none.fl_str_mv Unidade Acadêmica de Ciências Exatas e da Natureza/CFP/UFCG
dc.source.none.fl_str_mv Pesquisa e Ensino em Ciências Exatas e da Natureza; v. 4 (2020): Pesquisa e Ensino em Ciências Exatas e da Natureza; 01-14
2526-8236
10.29215/pecen.v4i0
reponame:Pesquisa e Ensino em Ciências Exatas e da Natureza
instname:Universidade Federal de Campina Grande (UFCG)
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instname_str Universidade Federal de Campina Grande (UFCG)
instacron_str UFCG
institution UFCG
reponame_str Pesquisa e Ensino em Ciências Exatas e da Natureza
collection Pesquisa e Ensino em Ciências Exatas e da Natureza
repository.name.fl_str_mv Pesquisa e Ensino em Ciências Exatas e da Natureza - Universidade Federal de Campina Grande (UFCG)
repository.mail.fl_str_mv ||cienciasexatasenatureza@gmail.com
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