Progesterone, 5-pregnene-3,20-dione, and desoxycorticosterone were found to be partial but significant inhibitors of estrone-induced growth of the uterus of hypophysectomized rats but they did not depress the amount of growth elicited by testosterone. The presence of both the 2-carbon side chain at position 17 and an oxygenated function at position 3 is necessary for the inhibitory activity of ...

Metabolic processes involving side-chain and ring cleavage of progesterone, 17-hydroxyprogesterone, 11-deoxycortisol and 16-dehydropregnenolone by Arthrobacter simplex were studied. The formation of the metabolites from progesterone indicates a pathway somewhat different from normal in the enzymic reaction sequence, and the 17-hydroxyprogesterone metabolites reveal a non-enzymic rearrangement s...

Abstract Background Prior spontaneous preterm birth is a strong risk factor for the recurrence of in subsequent pregnancy and has been evaluated prevention studies using progesterone (natural administered orally or vaginally, 17-hydroxyprogesterone caproate [17-OHPC]) as selection criterion. Based on findings randomized, placebo-controlled study, 17-OHPC was approved use 2011 by Food Drug Admin...

Estradiol 17 beta prevented the fall in the microbicidal activity of the myeloperoxidase-H2O2-halide system induced by high H2O2 concentrations. In contrast, when the H2O2 (and halide) concentrations were low the myeloperoxidase-H2O2-halide antimicrobial system was inhibited by estradiol. These properties of estradiol 17 beta were shared by estradiol 17 alpha, estrone, estriol, ethinyl estradio...

Generally, progestogens, i.e. progesterone in combination with oestradiol esters, are used primarily in the treatment of menstrual irregularities to maintain endangered pregnancies. Their derivatives are orally active medroxyprogesterone acetate including hydroxyprogesterone caproate, chlormadinone acetate, megestrol acetate. Naturally occurring glucocorticoids are often used in medicine such a...