17 citations
,
December 2018 in “The World Journal of Men s Health” This study concluded that administering dutasteride for more than 8 weeks in rats could lead to irreversible erectile dysfunction, even after stopping the medication.
15 citations
,
January 2017 in “Experimental Neurology” This study found that finasteride significantly reduced levodopa-induced dyskinesia in both male and female rats without diminishing l-DOPA's motor benefits, indicating potential for clinical trials in Parkinson's patients.
15 citations
,
February 2015 in “Han-gug chugsan sigpum hag-hoeji/Korean journal for food science of animal resources” This study concludes that egg shell membrane hydrolysates, particularly Fraction I, may effectively mitigate UV-B radiation-induced wrinkles and promote skin collagen and hyaluronic acid production, suggesting potential use in functional cosmetics.
15 citations
,
June 1995 in “The Journal of Clinical Endocrinology and Metabolism” This study found that finasteride significantly reduced dihydrotestosterone levels but did not provide clear evidence of impaired libido or erectile function compared to placebo in men.
14 citations
,
April 2021 in “Biology” This study found that ethanol extract of Tubtim Chumphae rice bran downregulates SRD5A gene expression, similarly to finasteride, suggesting potential use as an anti-hair loss product.
13 citations
,
November 2019 in “Scientific reports” This study found that inhibiting 5α-reductase in molluscs provokes a specific shell morphology, suggesting gastropods might have unique 5α-reductase substrates absent in vertebrates.
13 citations
,
January 2005 in “Chemical and Pharmaceutical Bulletin” This study reported that newly synthesized progesterone derivatives significantly reduced prostate weight in testosterone-treated hamsters, with 5alpha-reductase inhibitory activity dependent on the size of the substituent at C-17.
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.
12 citations
,
March 1995 in “Journal of the American Chemical Society” Finasteride modifies 5-alpha-reductases through a two-step process, affecting inhibitor potency and possibly causing side effects.
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.
10 citations
,
October 2018 in “Sexual medicine reviews” This review discusses sexual side effects in men with androgenic alopecia treated with 5-alpha reductase inhibitors and reports no new clinical findings.
10 citations
,
August 2014 in “Skin research and technology” This study found that variations in sleep patterns, free testosterone, and 5-alpha-reductase type 1 activity are associated with changes in sebum excretion in women, which may contribute to variability in acne studies.
9 citations
,
July 2011 in “The Journal of Sexual Medicine” This article examines 5 alpha-reductase inhibitors and their link to persistent sexual dysfunction, but it reports no new clinical findings.
4 citations
,
May 2021 in “Biomedicines” This review explores the potential role of caveolin-1 in cicatricial alopecia, particularly frontal fibrosing alopecia, and discusses possibilities for targeted therapies without providing new research results.
3 citations
,
April 2021 in “Journal of Medicinal Chemistry” This study suggests that finasteride may inhibit the enzyme PNMT, potentially contributing to its sexual and psychological side effects.
3 citations
,
March 2018 in “European Urology Supplements” This study found that Finnish men using 5-alpha-reductase inhibitors before or after bladder cancer diagnosis had improved disease-specific survival compared to non-users, suggesting potential benefits of the treatment.
2 citations
,
July 2025 in “Discover Chemistry.” This study explored the optimization of phytochemicals from Alstonia boonei to develop potential 5-alpha reductase inhibitors for Benign Prostatic Hyperplasia, finding promising analogs with enhanced binding affinity and stability compared to Finasteride, warranting further experimental validation.
2 citations
,
January 2025 in “Frontiers in Pharmacology” In a rat model of benign prostatic hyperplasia, this study found that purple corn extract may improve symptoms by inhibiting prostate enlargement, reducing androgen receptor signaling, and exerting anti-inflammatory effects.
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.
2 citations
,
February 2018 in “InTech eBooks” This article discusses adverse immune-mediated skin reactions associated with TNF-alpha inhibitors, highlighting paradoxical reactions such as psoriasis that occur despite being treated with medications intended to alleviate the condition.
2 citations
,
August 2016 in “British Journal of Clinical Pharmacology” This study found that from 2011 to 2015, a substantial portion of women in the Netherlands dispensed finasteride or dutasteride were not using adequate contraception, prompting calls for improved risk management.
This study suggests that 9-Octadecenoic acid (Z)-, 2,3-dihydroxypropyl ester from African Yam bean seeds may inhibit the human 5α-reductase II enzyme, potentially helping manage BPH, although further studies are needed.
November 2023 in “Scientific reports” This study presents the first report on cloning and characterizing the full-length cDNA of SRD5A1 in Indian catfish (Clarias magur), revealing expression differences across reproductive phases and increased expression post-Ovatide administration in ovaries and testis.
March 2010 in “Ejc Supplements” This article discusses the paradoxical effects of valproic acid on hair, reporting both drug-induced hair loss and the potential for hair growth when used topically, but presents no original research findings.
12 citations
,
March 2017 in “Medicinal Chemistry Research” This study found that certain curcumin analogs derived from natural plant sources exhibit anti-androgen activity by inhibiting steroid 5-alpha reductase, identifying key structural features for their potency and safety in treating androgen-related conditions.
11 citations
,
December 2018 in “Assay and Drug Development Technologies” This review highlights the challenges in screening for steroid 5 alpha-reductase inhibitors and discusses significant variability in the effectiveness of finasteride and dutasteride, calling for standardized testing methods to develop safer, more specific inhibitors from herbal preparations.
March 2026 in “Scientific Reports” This study found that Cnidium officinale extract and its compound ferulic acid improved hair growth by promoting dermal papilla cell function and mitochondrial activity, suggesting their potential as a new treatment option for alopecia, possibly through estrogen receptor alpha activation.
61 citations
,
January 2008 in “Biological & Pharmaceutical Bulletin” In this study, finasteride dose-dependently inhibited stress-induced increases in allopregnanolone in rats, while enhancing 20alpha-reduction of progesterone without affecting 3alpha-dihydroprogesterone or 11-deoxycorticosterone levels.
36 citations
,
March 2014 in “Biomaterials” This study found that the 11R-No. 10 peptide, delivered transdermally, significantly inhibited melanogenesis and produced a whitening effect in a UV-induced sun-tanning guinea pig model without cytotoxicity.
1 citations
,
January 2016 in “Asian-Australasian journal of animal sciences” In this study, the expression of Gnαs was significantly higher in black mice compared to white mice, suggesting its potential involvement in coat color formation in mice.