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Agricultura Técnica

versão impressa ISSN 0365-2807


PEREZ-RIVERO, J-J et al. Phytoestrogen Consumption and their Effects in Different Organs and Systems of Domestic Animals. Agric. Téc. [online]. 2007, vol.67, n.3, pp.325-331. ISSN 0365-2807.

Phytoestrogens are plant-derived compounds having similar effects to estrogens. Several phytostrogen groups have been identified being the most characteristics the isoflavones like genistein, coumestans like coumestrol, and lignans represented by the enterolactone. Depending on the doses, they can act as agonists or antagonists of steroidal hormones. This apparently bimodal function is due to their capacity to interact with the alpha form of the estrogen receptor (ERα) in several organs of the female reproductive tract and to the beta form ERβ present in prostate, testis, ovaries, limph nodes and brain regions. It has been observed that an increase in genistein or coumestrol induces an increase in haemorrhagic follicles, miscarriages, LH-FSH surge suppression and even estrogenic syndrome, whereas in males, induces alterations in testis development and a decrease in sperm count. In this review, a panoramic view of the actual research of phytostrogen impact on the reproductive function and perspectives mainly for domestic animals is presented

Palavras-chave : coumestrol; genistein; estrogen receptors.

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