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5α-Reductase inhibitors (5-ARIs), also known as dihydrotestosterone (DHT) blockers, are a class of medications with antiandrogenic effects which are used primarily in the treatment of enlarged prostate and scalp hair loss. They are also sometimes used to treat excess hair growth in women and as a component of hormone therapy for transgender ...
This is a list of 5α-reductase inhibitors (5α-RIs), drugs which inhibit one or more isoforms of the enzyme 5α-reductase.This enzyme is responsible for the conversion of the androgen hormone testosterone into the more potent dihydrotestosterone (DHT) and is essential for the production of neurosteroids like allopregnanolone, tetrahydrodeoxycorticosterone (THDOC), and 3α-androstanediol from ...
A small risk of gynecomastia has been associated with 5α-reductase inhibitors (1.2–3.5%). [36] [41] Based on reports of 5α-reductase type 2 deficiency in males and the effectiveness of 5α-reductase inhibitors for hirsutism in women, reduced body and/or facial hair growth is a likely potential side effect of these drugs in men.
Finasteride, sold under the brand names Proscar and Propecia among others, is a medication used to treat pattern hair loss and benign prostatic hyperplasia (BPH) in men. [6] It can also be used to treat excessive hair growth in women [7] and as gender-affirming treatment in trans women. [8]
5α-Reductase type 1 inactivated male mice have reduced bone mass and forelimb muscle grip strength, which has been proposed to be due to lack of 5α-reductase type 1 expression in bone and muscle. [29] In 5 alpha reductase type 2 deficient males, the type 1 isoenzyme is thought to be responsible for their virilization at puberty. [6]
For comparison, the clinical dosage range of spironolactone in humans is usually about 4 to 8 mg/kg. [30] There is also mixed/conflicting evidence that spironolactone may inhibit 5α-reductase, and thus the synthesis of the potent androgen DHT from testosterone, to some extent.
Roizen, who has written about longevity, takes supplements every day. They include multivitamins and aspirin. A doctor who's 78 but says he has a biological age of 57.6 shared five of the ...
5α-Dihydrocortisol (5α-DHF), also known as hydrallostane or as allodihydrocortisol, [1] is a metabolite of cortisol that is formed by 5α-reductase. [2] [3] It is present in the aqueous humor of the eye, is produced in the lens of the eye, and is involved in regulating the formation of the aqueous humor.