Exposure to ethinylestradiol during prenatal development and postnatal supplementation with testosterone causes morphophysiological alterations in the prostate of male and female adult gerbils

Autor(es)

Silva Perez, Ana Paula ^[1] ; Biancardi, Manoel Francisco ^[1] ; Goes, Rejane Maira ; dos Santos, Fernanda Alcantara ^[2] ; Taboga, Sebastiao Roberto ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, UNICAMP, Grad Program Cell & Struct Biol, Inst Biol, Campinas, SP - Brazil

^[2] Univ Fed Goias, Dept Morphol, Goiania, Go - Brazil

^[3] Sao Paulo State Univ, IBILCE UNESP, Dept Biol, Lab Microscopy & Microanal, Inst Biosci Humanities & Exact Sci, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Experimental Pathology; v. 92, n. 2, p. 121-130, APR 2011.
• Citações Web of Science: 18

Resumo

P>Steroids perform significant functions in prostatic development and growth, so that interferences of this equilibrium may predispose the gland to the development of diseases during the life. Embryonic and neonatal exposure to xenoestrogens, many of them with endocrine-disrupting potential, has been related to the induction of disturbances in reproductive system organs. Thus, this study aimed to analyse morphological and immunocytochemical aspects of prostate in both male and female adult gerbils either exposed to ethinylestradiol during the prenatal phase (pregnant females received 10 mu g/kg, by gavage) (EE group) or exposed to testosterone (1 mg/kg) during the postnatal period (EE/T group). Serological analysis revealed a rise in estradiol levels in adult males and females of the EE group. A higher incidence of prostatic intraepithelial neoplasia (PIN) was observed in the male and female prostate of the treated groups, besides an increase in collagen and reticular fibres. Immunocytochemistry showed an increase in prostatic epithelial cells immunoreactive to AR and a presence of a smooth muscle layer, evidenced by alpha actin, in injured regions this way absent in prostatic epithelial buds. These pieces of evidence suggest that the alterations verified in the prostate in adulthood of both sexes may be due to the high oestrogen levels. Either males or females of the EE/T group showed normalized estradiol levels, although prostatic lesions could be observed. While the prostatic gland of male gerbils was more affected than the female prostate, this study showed that the exposure to EE during this critical period of development disrupts the prostate of both sexes in terms of prostatic lesions. (AU)

• Processo FAPESP: 07/06234-2 - Desenvolvimento da próstata masculina e feminina do gerbilo da Mongólia sob efeito da exposição intra-uterina e pós-natal de etinil estradiol
• Beneficiário: Ana Paula da Silva Perez
• Modalidade de apoio: Bolsas no Brasil - Mestrado