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dc.contributor.authorYasuhara, Fabiana [UNIFESP]
dc.contributor.authorGomes, Gisele Renata de Oliveira [UNIFESP]
dc.contributor.authorSiu, Erica Rosanna [UNIFESP]
dc.contributor.authorSuenaga, Claudia Igushi [UNIFESP]
dc.contributor.authorMarostica, Elisabeth [UNIFESP]
dc.contributor.authorPorto, Catarina Segreti [UNIFESP]
dc.contributor.authorLazari, Maria de Fatima Magalhaes [UNIFESP]
dc.identifier.citationBiology of Reproduction. Madison: Soc Study Reproduction, v. 79, n. 3, p. 432-441, 2008.
dc.description.abstractThe efferent ductules express the highest amount of estrogen receptors ESR1 (ERalpha) and ESR2 (ERbeta) within the male reproductive tract. Treatment of rats with the antiestrogen fulvestrant (ICI 182,780) causes inhibition of fluid reabsorption in the efferent ductules, leading to seminiferous tubule atrophy and infertility. To provide a more comprehensive knowledge about the molecular targets for estrogen in the rat efferent ductules, we investigated the effects of ICI 182,780 treatment on gene expression using a microarray approach. Treatment with ICI 182,780 increased or reduced at least 2-fold the expression of 263 and 98 genes, respectively. Not surprisingly, several genes that encode ion channels and macromolecule transporters were affected. Interestingly, treatment with ICI 182,780 markedly altered the expression of genes related to extracellular matrix organization. Matrix metalloproteinase 7 (Mmp7), osteopontin (Spp1), and neuronal pentraxin 1 (Nptx1) were among the most altered genes in this category. Upregulation of Mmp7 and Spp1 and downregulation of Nptx1 were validated by Northern blot. Increase in Mmp7 expression was further confirmed by immunohistochemistry and probably accounted for the decrease in collagen content observed in the efferent ductules of ICI 182,780-treated animals. Downregulation of Nptx1 probably contributed to the extracellular matrix changes and decreased amyloid deposition in the efferent ductules of ICI 182,780-treated animals. Identification of new molecular targets for estrogen action may help elucidate the regulatory role of this hormone in the male reproductive tract.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt
dc.publisherSoc Study Reproduction
dc.relation.ispartofBiology of Reproduction
dc.rightsAcesso aberto
dc.subjectEfferent ductulesen
dc.subjectGene regulationen
dc.subjectMale reproductive tracten
dc.titleEffects of the antiestrogen fulvestrant (ICI 182,780) on gene expression of the rat efferent ductulesen
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.description.affiliationUniversidade Federal de São Paulo, Dept Pharmacol, Sect Expt Endocrinol, Escola Paulista Med,INFAR, BR-04044020 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Pharmacol, Sect Expt Endocrinol, Escola Paulista Med,INFAR, BR-04044020 São Paulo, Brazil
dc.description.sponsorshipIDFAPESP: 2003/10132-0pt
dc.description.sourceWeb of Science

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