Metabolism of dehydroepiandrosterone and dehydroepiandrosterone sulfate in tissue extracts of rabbit ovaries
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Metabolism of dehydroepiandrosterone sulfate and estrone-sulfate by human platelets.
The aim of the present research was to study the uptake of DHEAS, and to establish the intracrine capacity of human platelets to produce sex steroid hormones. The DHEAS transport was evaluated through the uptake of [(3)H]-DHEAS in the presence or absence of different substrates through the organic anion transporting polypeptide (OATP) family. The activity of sulfatase enzyme was evaluated, and ...
متن کاملSerum dehydroepiandrosterone, dehydroepiandrosterone sulfate, and pregnenolone sulfate concentrations in patients with hyperthyroidism and hypothyroidism.
BACKGROUND Dehydroepiandrosterone (DHEA) and dehydroepiandrosterone sulfate (DHEA-S) have been suggested to have protective effects against cardiovascular disease, cancer, immune-modulated diseases, and aging. We examined serum concentrations of DHEA, DHEA-S, and pregnenolone sulfate (PREG-S) in patients with thyroid dysfunction. METHODS Steroids extracted with methanol from serum sample were...
متن کاملConversion of dehydroepiandrosterone sulfate to androst-5-enediol-3-sulfate by soluble extracts of rat testis.
3 H-Androst-5-ene-17-one-3B-pl sulfate is converted to 3B-androst-5-ene-lW-ol-3f3-yl sulfate by soluble extracts of rat testis in the presence of added NAM%2 or NADPH2. The conversion was approximately 4 times greater than the conversion of 3H-androst-5-ene-17-one-3B_ol to 3%androst-5-ene+3@,17&diol under similar incubation conditions. The same extracts converted 3H-androst5-ene-17-one-3@-ol to...
متن کاملSerum levels of dehydroepiandrosterone and dehydroepiandrosterone sulfate and the risk of developing gastric cancer.
Although the incidence of gastric cancer varies widely between countries it is nonetheless a leading cause of cancer deaths worldwide. Migration studies indicate that dietary choices are an important exogenous factor. The United States has a very low incidence of gastric cancer, suggesting that exogenous etiological agents are at a minimum and providing a favorable setting for detecting importa...
متن کاملDehydroepiandrosterone Sulfate and Breast Cancer Risk1
It has been suggested that dehydroepiandrosterone (DHEA) and its sulfate ester, dehydroepiandrosterone sulfate (DHEAS), have a protec tive effect against breast cancer. In our investigation, DHEAS levels were measured in plasma obtained and frozen in 1972-1974 from 534 women aged 50-79 yr. This group, which has been followed for 15 yr, included 21 incident cases of breast cancer, 20 cases with ...
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ژورنال
عنوان ژورنال: Steroids
سال: 1969
ISSN: 0039-128X
DOI: 10.1016/0039-128x(69)90008-7