Abstract

The use of a modified, adequate method of quantification of estrogen receptors has permitted us to prove the existence of sex-specific peculiarities in rat liver estrogen reception and their significance for the realization of sex-dependent changes in angiotensinogen plasma level after estrogenization. Endocrine mechanisms for the formation of sex-related differences in hepatic estrogen receptor content in rats were investigated in detail. The investigation shows that androgens have negative regulatory influence on the hepatic estrogen receptor level in rats. Estrogens and adrenal and thyroid hormones do not take part in the regulation of hepatic estrogen receptor content in rats. It has been proven that the decisive role in keeping up a certain estrogen receptor concentration in hepatocytes belongs to pituitary growth hormone. It was shown for the first time that androgens are able to inhibit the stimulatory effect of growth hormone on hepatic estrogen receptors.

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