25 citations
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September 2005 in “International Journal of Developmental Neuroscience” This study found that in rats, morphine exposure may increase 5alpha-reductase activity in the CNS, leading to decreased testosterone levels, an effect blocked by finasteride.
177 citations
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June 1991 in “The Journal of Clinical Endocrinology & Metabolism” This study found that caucasian subjects had higher serum levels of 5 alpha-reduced androgen metabolites compared to Chinese subjects, suggesting racial differences in 5 alpha-reductase activity and a potential mechanism for increased body hair in caucasian men.
21 citations
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January 2003 in “Skin pharmacology and physiology” This study found that dutasteride completely suppressed the formation of 5alpha-dihydro metabolites in cultured human skin cells, suggesting its potential use in acne and androgenetic alopecia.
54 citations
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July 2002 in “Clinical and Experimental Dermatology” This article provides a critical overview of recent discoveries in the genetics and molecular processes involved in androgenetic alopecia, focusing on its polygenic basis and DHT dependency, but reports no new clinical results.
57 citations
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May 1986 in “Clinics in endocrinology and metabolism” This review found that women with idiopathic hirsutism may have increased 5α-reductase activity, as indicated by elevated levels of a dihydrotestosterone-reduced metabolite, but more research is needed to confirm its clinical relevance as a biomarker.