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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]
The human gene SRD5A2 encodes the 3-oxo-5α-steroid 4-dehydrogenase 2 enzyme, also known as 5α-reductase type 2 (5αR2), [5] [6] one of three isozymes of 5α-reductase. 5αR2 catalyzes the conversion of the male sex hormone testosterone into the more potent androgen , dihydrotestosterone .
The human 5α-reductase-2 gene (SRD5A2) is located on the short arm of chromosome 2 at band 23 and encodes a 254 amino acid protein, called 5α-reductase type 2. The 5α-reductase-1 gene (SRD5A1) is located in band 15 on the short arm of chromosome 5 and encodes a 259 amino acid protein, called 5α-reductase type 1.
Finasteride is a 5-alpha-reductase inhibitor, which blocks the conversion of testosterone into DHT. ... But changes in testosterone levels are probably not to blame for any changes in function you ...
Finasteride is a 5-alpha reductase inhibitor that’s used to treat androgenetic alopecia or androgenic alopecia (the clinical terms for male pattern baldness) and benign prostatic hyperplasia ...
3-Oxo-5α-steroid 4-dehydrogenase 1 is an enzyme that in humans is encoded by the SRD5A1 gene. [5] It is one of three forms of steroid 5α-reductase.. Steroid 5α-reductase (EC 1.3.99.5) catalyzes, among other reactions, the conversion of testosterone into the more potent androgen, 5α-dihydrotestosterone (DHT).
Finasteride is one of two 5-alpha reductase inhibitors, along with dutasteride. 5-alpha reductase is an enzyme that your body eventually converts into a hormone called dihydrotestosterone (DHT).
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.