57 citations
,
February 1983 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” This study found that pubic skin fibroblasts respond to androgens, increasing 5α-reductase activity via an androgen receptor-mediated mechanism, suggesting its potential as a marker of androgen action in vitro.
53 citations
,
June 1993 in “Proceedings of the National Academy of Sciences of the United States of America” This study identified LY191704 as a specific noncompetitive inhibitor of human 5 alpha-reductase type 1, which may be useful in treating endocrine disorders related to DHT overproduction.
53 citations
,
January 1986 in “Endocrinology” This rat study suggests that 5α-dihydrotestosterone plays a critical role in inhibiting nipple development in male fetuses by causing the regression of the nipple anlage in utero.
51 citations
,
July 2013 in “Brain Research” Testosterone needs to be converted to DHT to reduce stress response in male rats.
50 citations
,
August 1985 in “Journal of steroid biochemistry/Journal of Steroid Biochemistry” This study found that spironolactone directly inhibits 5 alpha-reductase activity in hirsute women, resulting in decreased conversion of testosterone to dihydrotestosterone, which may contribute to its therapeutic effects.
47 citations
,
January 2003 in “Current opinion in urology” This review discusses recent advancements in understanding the use of 5 alpha-reductase inhibitors for benign prostatic hyperplasia, indicating that dual isoenzyme inhibitors like dutasteride may enhance treatment outcomes, but no new clinical results are presented.
35 citations
,
May 1986 in “Clinics in endocrinology and metabolism” This study concludes that high skin 5α-reductase activity may contribute to hirsutism, but the specific regulatory mechanisms and genetic factors remain unclear.
31 citations
,
January 1995 in “The American journal of medicine” This article reviews the role of 5α-reductase in cutaneous hyperandrogenism and the potential of 5α-reductase inhibitors and antiandrogens in treating conditions like hirsutism and male-pattern baldness, reporting no clinical results.
28 citations
,
May 1986 in “Clinics in endocrinology and metabolism” This review discusses the potential of 4-azasteroids as 5α-reductase inhibitors for treating hirsutism, reporting their promising effects in animal studies but noting no clinical trials have been conducted yet.
22 citations
,
January 2001 in “Chemical & Pharmaceutical Bulletin” This study found that two new progesterone derivatives showed higher antiandrogenic effects and 5α-reductase inhibition than finasteride in hamsters, particularly reducing seminal vesicle weight and flank organ size.
22 citations
,
September 1994 in “The Journal of Clinical Endocrinology and Metabolism” This study found that three months of oral finasteride treatment significantly decreased dihydrotestosterone levels and hair growth in hirsute women without negatively affecting gonadotropin secretion.
17 citations
,
January 2013 in “Talanta” A new method was developed to accurately measure enzyme activity related to prostate health.
17 citations
,
July 2003 in “Metabolism-clinical and Experimental” This study found that young women with female-pattern hair loss exhibit increased testosterone production rates while dihydrotestosterone production rates remain within or below the normal range.
14 citations
,
February 1998 in “Bioorganic & Medicinal Chemistry Letters” This study explored how modifying the 8-substituent of 8-bromobenzoquinolinone affects its selectivity in inhibiting both 5 alpha-reductase isozymes in the scalp.
12 citations
,
January 2018 in “Pharmacology & pharmacy” This study found that components derived from Uromedic® pumpkin seeds, especially Δ7-sterols, may inhibit DHT production and AR binding, potentially benefiting prostate and bladder health by moderating these mechanisms.
12 citations
,
April 1995 in “Journal of Medicinal Chemistry” In this study, 4-substituted N-(1,1-dimethylethyl)-3-oxo-4-androstene-17.beta.-carboxamides were synthesized and evaluated in vitro as potential 5 alpha-reductase inhibitors and antiandrogens.
11 citations
,
May 1996 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” This study reported that 5 alpha-reductase type 2 is the predominant enzyme in pubic skin fibroblasts across normal men, women, and hirsute patients, suggesting potential treatment options for idiopathic hirsutism.
9 citations
,
August 2000 in “Journal of Periodontal Research” Finasteride reduces testosterone conversion, progesterone lessens this, and levamisole enhances finasteride's effect.
9 citations
,
March 1991 in “Endocrinology” This study in rats suggests that combining the 5 alpha-reductase inhibitor 4-MA with the antiandrogen Flutamide may enhance prostate cancer therapy by additively inhibiting prostatic growth and mRNA levels of androgen-sensitive prostatic binding proteins.
8 citations
,
June 2017 in “Steroids” This study evaluated novel steroid compounds for their ability to inhibit 5α-reductase, showing that compound 16a significantly reduced rat prostate weight more than epristeride and exhibited excellent in vitro inhibitory potency, indicating its potential as a lead candidate for further benign prostatic hyperplasia drug research.
8 citations
,
February 2010 in “Journal of Dermatology” This study observed that a topical liposome formulation of a 5‐α‐reductase inhibitor effectively reduced the size of treated sebaceous glands and induced apoptosis in a hamster model, suggesting potential benefits for acne treatment.
7 citations
,
January 1989 in “Archives of Dermatological Research” The side gland of Suncus murinus is a good model for studying human sebaceous glands.
3 citations
,
January 2023 in “Clinical cancer investigation journal” This theoretical study suggests that certain cannabinoid derivatives could potentially be effective as androgen receptor and 5α-reductase enzyme inhibitors, indicating they may be promising candidates for prostate cancer treatment based on their higher affinity to target proteins compared to standard drugs.
3 citations
,
February 2021 in “Molecules” In this study, researchers developed a sensitive assay to measure the inhibition of steroid 5-α reductase (5AR) by chemicals like finasteride and dutasteride, revealing species-specific differences in inhibitor efficacy between human and fish cell lines.
2 citations
,
March 2020 in “Baghdad Science Journal” This study found that among men with Benign Prostatic Hyperplasia, treatment with the 5α-reductase inhibitor finasteride for three months significantly reduced levels of dihydrotestosterone and estradiol, hormones involved in prostate enlargement, without altering follicle-stimulating hormone or luteinizing hormone levels.
2 citations
,
November 2018 in “Indian Journal of Pharmaceutical Education” This study designed a novel model for 5a-reductase enzyme inhibitors using pharmacophore and 3D QSAR techniques, potentially allowing for improved prediction and development of drug therapies targeting benign prostatic hyperplasia.
1 citations
,
July 2023 in “Zenodo (CERN European Organization for Nuclear Research)” This study investigates the potential of onion extract as a treatment for androgenetic alopecia by using in silico and ADME/T analyses to examine how active compounds from onions interact with the 5-alpha-reductase enzyme.
1 citations
,
October 2019 in “مجله كليه طب الكندي” In this study, researchers highlight the role of androgens like dihydrotestosterone in the pathophysiology of acne, pointing to the enzyme 5a-reductase type 1 as potentially more active in individuals with acne, which may contribute to hormonal influences in the condition's development.
1 citations
,
November 1995 in “Postgraduate medical journal” This article presents a case of 5-alpha-reductase deficiency in a Saudi individual, reporting no new research findings.
May 2026 in “RECIMA21 - Revista Científica Multidisciplinar - ISSN 2675-6218” This study reviewed recent scientific evidence on the neuroendocrine and metabolic impacts of chronic use of 5-alpha reductase inhibitors, detailing its association with sexual dysfunction, mood disorders, insulin resistance, and other metabolic disorders, suggesting persistent biopsycho-social risks beyond transient side effects in users.