Progesterone has a number of important functions throughout the human body. While the roles of progesterone are well known, the possible actions and implications of progesterone metabolites in different tissues remain to be determined. Ther…
The human aldo-keto reductase AKR1C2 converts 5α-dihydrotestosterone to the less active 3α-androstanediol and has a minor 20-ketosteroid reductase activity that metabolises progesterone to 20α-hydroxyprogesterone. AKR1C2 is expressed in dif…
Human aldo-keto reductases 1C1-1C4 (AKR1C1-AKR1C4) function in vivo as 3-keto-, 17-keto-, and 20-ketosteroid reductases and regulate the activity of androgens, estrogens, and progesterone and the occupancy and transactivation of their corre…
Human 17β-hydroxysteroid dehydrogenase (17β-HSD) type 1 is an enzyme that acts at the pre-receptor level. It catalyzes the NADPH-dependent reduction of the weak estrogen estrone into the most potent estrogen 17β-estradiol, which exerts prol…
BACKGROUND: Human 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1) acts at a pre-receptor level. It catalyzes NADPH-dependent reduction of the weak estrogen estrone into the most potent estrogen estradiol, which exerts its proliferative e…
The AKR1C aldo-keto reductases (AKR1C1-AKR1C4) are enzymes that interconvert steroidal hormones between their active and inactive forms. In this manner, they can regulate the occupancy and trans-activation of the androgen, estrogen and prog…
The human aldo-keto reductases 1C1 and 1C3 (AKR1C1 and AKR1C3) are important 20-ketosteroid reductases in pre-receptor regulation of progesterone action. Both AKR1C1 and AKR1C3 convert progesterone to the less potent metabolite 20α-hydroxyp…
17β-Hydroxysteroid dehydrogenase type 1 (17β-HSD1) is an enzyme that catalyzes NADPH-dependent reduction of the weak estrogen, estrone, into the most potent estrogen, estradiol, which exerts proliferative effects via the estrogen receptors.…
Human hydroxysteroid dehydrogenase (HSD) AKR1C1 is a member of the aldo-keto reductase superfamily, and it functions mainly as a 20alpha-HSD. It catalyzes the reduction of the potent progesterone to the weak 20alpha-hydroxyprogesterone, and…
Carcinogenesis of hormone-related cancers involves hormone-stimulated cell proliferation, which increases the number of cell divisions and the opportunity for random genetic errors. In target tissues, steroid hormones are interconverted bet…