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Two major pathways metabolize testosterone into 17-keto steroids, primarily estradiol (E2) and dihydrotestosterone (DHT). DHT is further metabolized to 3<math>\a ...-3 ketone to a hydroxyl group, and the formation of an aromatic ring A. [[Estradiol]] is the major estrogen.

...so by alterating related hormones. For example, the estrogens estrone and estradiol are biosynthetically produced by the enzyme [[aromatase]], respectively, fr

...so by alterating related hormones. For example, the estrogens estrone and estradiol are biosynthetically produced by the enzyme [[aromatase]], respectively, fr

...le=A randomized, open, parallel-group study on the preventive effect of an estradiol-releasing vaginal ring (Estring) on recurrent urinary tract infections in p

...re mediated by estrogen. Within the brain, testosterone is converted to ([[estradiol]])<ref>This conversion is by [[aromatisation]]; the enzyme aromatase is exp

(DHEAS)), estrogens (estrone and estradiol), sex hormone-binding globulin (SHBG), IGF-I and IGF-

* [[Estradiol]]

...aceptive that supplies a progestin (etonogestrel) and an estrogen (ethinyl estradiol). The ring is used intravaginally for 21 days followed by a seven-day hormo

...be directly converted by [[aromatase]] to the estrogens [[estrone]] and [[estradiol]], respectively). Increased blood levels of [[progesterone]] are associated