This review discusses 5-alpha reductase inhibitors, highlighting their long-term efficacy and tolerability in treating benign prostate hyperplasia, while also noting sexual dysfunction as a common adverse effect.
3 citations
,
October 2010 in “Wiley-VCH Verlag GmbH & Co. KGaA eBooks” Finasteride safely treats enlarged prostate and male-pattern baldness.
March 2020 in “StatPearls” This article describes the use, action, and considerations for 5-alpha-reductase inhibitors in treating benign prostatic hyperplasia and androgenic alopecia but provides no new clinical results, emphasizing existing knowledge and guidelines for healthcare providers.
64 citations
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March 2008 in “Neuropsychopharmacology” 42 citations
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August 2012 in “Psychoneuroendocrinology” Finasteride reduces certain behaviors caused by D1-like receptor agonists but not by D2-like receptor agonists in mice.
136 citations
,
July 2014 in “Proceedings of the National Academy of Sciences of the United States of America” This study identified mutations in the FGF5 gene as a cause of extreme eyelash growth in Pakistani families, highlighting a potential target for regulating eyelash growth.
6 citations
,
July 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This review evaluates the use of 5α-reductase inhibitors in feminising hormone therapy, finding their additive feminising benefits unclear due to their specific action on testosterone conversion, with concerns highlighted regarding limited supporting evidence and safety signals, particularly for psychiatric and sexual effects.
April 2017 in “Austin Journal of Cancer and Clinical Research” This article reviews the role and controversies of 5α-reductase inhibitors like finasteride and dutasteride in managing prostate cancer, without presenting new research results.
4 citations
,
April 2019 in “DOAJ (DOAJ: Directory of Open Access Journals)” This review highlights available treatments for frontal fibrosing alopecia, noting that 5-alpha reductase inhibitors, intralesional steroids, and hydroxychloroquine currently have the most evidence supporting their use, while other treatments show variable results and require further study.
May 2018 in “KU ScholarWorks (The University of Kansas)” This study found that in animal models of Tourette syndrome, stress-induced tic-like behaviors and sensorimotor gating deficits were reduced by finasteride, suggesting a role for neurosteroids like allopregnanolone.
4 citations
,
April 2018 in “Biotechnology Letters” Human growth factor 20 can boost mouse whisker growth.
February 2020 in “Definitions” This study found that finasteride treatment may decrease contraction of seminal vesicle tissue and alter some semen parameters in male rabbits.
This review concluded that 5α-reductase inhibitors like finasteride and dutasteride offer limited additional feminising effects in hormone therapy for transfeminine individuals, with the clearest use being androgenetic alopecia treatment; more research is needed for other potential benefits.
5 citations
,
November 2020 in “Dermatologic Therapy” This study found that a mutant form of the FGF5s protein, FGF5sC93S, significantly increased hair count after 24 weeks of application on human scalps, suggesting its potential as a hair growth treatment.
186 citations
,
December 2011 in “Molecules” This study reported that while no synthesized compounds surpassed finasteride in 5α-reductase inhibitory activity, certain 4-azasteroid-2-oximes exhibited notable inhibition.
July 2024 in “Journal of Investigative Dermatology” PP405 may help hair growth by activating hair follicle stem cells.
124 citations
,
January 1996 in “Dermatology” This article reviews the biochemical properties of 5 alpha-reductase isoforms and highlights the limited dermatological use of inhibitors like finasteride, especially for type 1 isozyme-targeting agents, while suggesting further clinical exploration.
2 citations
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November 2007 in “Hair transplant forum international” This abstract introduces the concept of follicular units (FUs) in the human scalp but presents no new research findings.
3 citations
,
October 1995 in “International Journal of Dermatology” This study confirms that finasteride inhibits the conversion of testosterone to dihydrotestosterone in human dermal fibroblasts, suggesting potential therapeutic use for androgen-related skin disorders.
8 citations
,
September 2021 in “EMBO Molecular Medicine” This study found that a 5-mer peptide called P5 promotes hair growth by activating adiponectin receptor 1, suggesting its potential use as a topical treatment for alopecia.
1 citations
,
June 2021 in “Singapore Medical Journal” This study suggests that type I 5-alpha reductase may also play a role in hair growth, with dutasteride potentially being more potent than finasteride in modulating key hair growth gene expressions.
20 citations
,
January 2016 in “Intractable & Rare Diseases Research” In this clinical experience, treating frontal fibrosing alopecia with oral finasteride, hydroxychloroquine, tacrolimus, and excimer laser was associated with optimal results in patients with active inflammation.
34 citations
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July 1993 in “PubMed” This article reviews the characteristics and uses of finasteride for benign prostatic hyperplasia, noting variable symptom improvement and ongoing investigation in other DHT-mediated conditions, and reports no new clinical results.
March 2016 in “The Journal of Urology” This historical review traces the discovery of 5-alpha reductase inhibitors, widely used in urology, from the study of guevedoces, Dominican children with a rare disorder leading to significant androgenization at puberty.
June 2001 in “International Journal of Cosmetic Surgery and Aesthetic Dermatology” This review discusses advances in 5α-reductase inhibitors for treating male androgenetic alopecia and reports no new clinical results.
February 2025 in “Iranian journal of pharmaceutical research” 23 citations
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March 2019 in “Gene” In this study, researchers found that the evolutionary and structural features of the oFGF5 gene in sheep may influence hair follicle development and hair growth regulation.
February 2022 in “Research Square (Research Square)” In this study, researchers successfully expressed recombinant human FGF5 protein in Arabidopsis, finding that this protein inhibits hair regeneration both in vitro and in vivo.
8 citations
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October 2018 in “Journal of The American Academy of Dermatology” This study evaluated treatments for frontal fibrosing alopecia and found hydroxychloroquine and 5a-reductase inhibitors to be most effective, with 70-72% of patients experiencing stabilization or improvement, but limitations in treatment consistency and assessment methods remain.
8 citations
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January 1991 in “European Urology” This study found that the 5α-steroid metabolite profile in men with inherited 5α-reductase deficiency is similar to those taking the drug finasteride, suggesting the gene affects multiple steroid substrates.