Resumo

LENIS SANIN, Yasser Yohan; GUTIERREZ GOMEZ, María Teresa  e  TARAZONA MORALES, Ariel Marcel. PHYTOSTROGEN EFFECTS ON ANIMAL REPRODUCTION. Rev. Fac. Nac. Agron. Medellín [online]. 2010, vol.63, n.2, pp.5555-5565. ISSN 0304-2847.

Phytoestrogens are compounds produced as secondary metabolites in some plants and forajes for animal and human consumption. Its importance is that when they are consumed they can have endogenous activity of agonizing or antagonizing the estrogens. It is known five families of phytoestrogens classified according to their chemical structure as (flavonoids, isoflavones, coumestans, lignans and stilbenes). Despite the fact that phytoestrogens affect vital systems such as the kidney, nervous, cardiovascular and others, one of the most affected is the reproductive tract, in which is the focuses of this review; however, the literature is controversial because they has shown both carcinogenic and anticarcinogenic effects. The mechanism of action of phytoestrogens is mediated by stimulation or inhibition of the receptors ERa and ERb that are specific to estrogen, and therefore are considered of importance in animal production systems and human health because they may cause alterations on the reproductive physiology. The aim of this review is to show the state of the art about the knowledge of the effect of phytoestrogens on reproduction and highlight gaps in knowledge.

Palavras-chave : Quistosis; estrogen; isoflavones; lignans; coumestans.

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