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December 2011 in “Advances in Urology” The document concludes that the 5 alpha-reductase enzymes are important in steroid metabolism and related to various human diseases, with inhibitors used to treat conditions like male pattern baldness and prostate issues.
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150 citations
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December 2008 in “The Journal of Sexual Medicine” 5-alpha reductase inhibitors can cause sexual side effects like erectile dysfunction, but the exact reasons are unclear.
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January 1994 in “European Urology” Finasteride works better than Permixon in reducing dihydrotestosterone levels.
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November 2012 in “Expert Opinion on Drug Safety” 5-alpha reductase inhibitors can cause sexual side effects like erectile dysfunction and reduced sexual desire, sometimes lasting after stopping the drug.
70 citations
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June 1993 in “Biochemistry” Finasteride slowly binds to 5-alpha-reductase, affecting enzyme stability and inhibitor potency.
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February 1997 in “Teratology” Finasteride, when given in high oral doses to pregnant monkeys, caused genital abnormalities in male fetuses, but not in female fetuses or those exposed to intravenous finasteride.
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September 1994 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride reduces scalp DHT levels, potentially treating male pattern baldness.
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November 1995 in “The Journal of Clinical Endocrinology & Metabolism” Females with 5 alpha-reductase-2 deficiency have less body hair, no acne, normal fertility, and delayed menarche.
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May 1996 in “The Journal of Clinical Endocrinology & Metabolism” Different mutations in the 5 alpha-reductase-2 gene were found in affected individuals in the Dominican Republic, suggesting no common ancestry.
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July 2013 in “Brain Research” Testosterone needs to be converted to DHT to reduce stress response in male rats.
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January 2003 in “Current opinion in urology” A new drug, dutasteride, is at least as effective as the older drug, finasteride, for treating enlarged prostate and may have additional uses.
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October 2014 in “Current Opinion in Endocrinology, Diabetes and Obesity” 5-alpha reductase deficiency leads to male sexual development issues and treatments like finasteride help with prostate enlargement and hair loss.
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April 2008 in “The Cochrane library” 5-alpha-reductase inhibitors can lower prostate cancer risk but may increase high-grade tumors and cause sexual side effects.
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November 2020 in “Journal of The European Academy of Dermatology and Venereology” 5-alpha-reductase inhibitors may reduce COVID-19 symptoms in bald males.
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35 citations
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April 2013 in “Sexual medicine reviews” 5-alpha reductase inhibitors slightly increase the risk of sexual and mood side effects, and breast growth in men.
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February 1992 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride and minoxidil together promote hair growth better than either alone.
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January 2016 in “Skin appendage disorders” The document concludes that sexual and psychiatric side effects from 5-alpha-reductase inhibitors are reported, but more high-quality research is needed to understand how often they occur.
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October 1994 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride reduces hair growth and is safe for women with excessive hair.
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July 2016 in “PubMed” 5-alpha reductase inhibitors are generally safe but can cause sexual side effects and require patient education on risks.