10 citations
,
January 2017 in “Journal of Evidence-Based Complementary & Alternative Medicine” This study found that several local vegetables from Northern Thailand demonstrated significant antioxidant and 5α-reductase inhibitory activities, suggesting their potential for development into health-promoting products.
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.
33 citations
,
May 2013 in “Andrologia” This study identified several herbs, including Ganoderma lucidum and Urtica dioica, that showed promising 5α-reductase inhibitory activity suggesting potential use in managing androgenic disorders.
4 citations
,
January 2016 in “Journal of analytical & bioanalytical techniques” This study evaluated a hair growth gel with Hibiscus rosa sinensis, Eclipta alba, and Solanum nigrum extracts, demonstrating consistent homogeneity, 5 α-reductase inhibitory activity, and no skin irritation.
40 citations
,
March 2016 in “The Journal of Clinical Endocrinology & Metabolism” This study suggests that daughters of women with PCOS may have altered androgen metabolism in early childhood, with increased 5α-reductase activity potentially contributing to PCOS development.
November 2022 in “Journal of Investigative Dermatology” This study found that a lotion containing specific plant extracts significantly increased the number of anagen hairs and the anagen/telogen ratio in subjects with androgenetic alopecia after three months of use.
17 citations
,
March 2020 in “Frontiers in Chemistry” This study isolated new geranylated coumarins from Mammea siamensis flowers and found that several of these compounds inhibit testosterone 5α-reductase.
This study suggests that Nepenthes kampotiana Lecomte ethanol extract may promote hair growth and inhibit cell death in models of androgenic alopecia, indicating potential as a treatment option.
10 citations
,
August 1998 in “Journal of Investigative Dermatology” This study observed that the compound EM-402 reduced 5α-reductase activity and sebaceous gland size in the flank organs and ears of hamsters, indicating potent localized anti-androgenic effects without systemic action.
19 citations
,
May 2014 in “Molecules” This study found that the methanolic heartwood extract of Avicennia marina significantly inhibits 5α-reductase type 1, reducing 5α-DHT production by 52% in a cell-based assay with human hair dermal papilla cells.
18 citations
,
June 2009 in “Journal of Molecular Endocrinology” This study found that exposure to finasteride impaired spermatogenesis in male Xenopus laevis by affecting sex-specific feedback mechanisms in the hypothalamus–pituitary–gonad axis.
12 citations
,
January 2018 in “Journal of Drug Delivery Science and Technology” This study developed solid lipid nanoparticles for effective delivery of shRNA-encoding plasmids, showing reduced 5α-reductase levels in DU-145 cells without significant cytotoxicity.
February 2026 in “Toxicology Letters” This study used an in silico/in vitro approach to identify potential inhibitors of the enzyme SRD5A2, finding that the androgen receptor modulator MK-0773 is a moderate inhibitor, although it does not act as a covalent inhibitor like finasteride.
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.
January 2026 in “Applied Biological Chemistry” This study found that Ishophloroglucin A from brown seaweed may treat androgenic alopecia by inhibiting 5α-reductase and promoting hair growth-related factors in human dermal papilla cells.
15 citations
,
January 1998 in “Journal of Clinical Periodontology” Finasteride helps treat hair loss by blocking enzyme activity.
13 citations
,
August 1995 in “The Journal of Steroid Biochemistry and Molecular Biology” This study found that the pH dependency of rat steroid 5α-reductase type II isozyme significantly affects its kinetic properties, including Vmax and Km, suggesting past discrepancies in literature may arise from these pH variances during assays.
October 2022 in “Endocrine journal” In this study of male patients with 46,XY 5α-reductase type 2 deficiency, DHT therapy was effective in achieving penile enlargement during infancy, while testosterone replacement therapy proved more beneficial during puberty, possibly due to increased conversion to DHT.
26 citations
,
October 2011 in “International Journal of Biological Macromolecules” This study found that some synthesized heterocyclic derivatives showed promising 5α-reductase inhibitor, antiviral, and anti-tumor activities, surpassing several reference drugs in effectiveness.
49 citations
,
October 2017 in “Nutrients” This study observed that the ethyl acetate extract of Equisetum debile showed high activity against 5α-reductase and lipid peroxidation with no cytotoxicity on dermal papilla cells.
45 citations
,
February 2005 in “Steroids” This study reported that certain newly synthesized steroidal derivatives showed stronger inhibitory activity against the 5α-reductase enzyme than finasteride in hamsters, suggesting their potential as enzyme inhibitors.
January 2010 in “Research and Practice on Chinese Medicines” This study found that coffee extraction and its active compound, caffeotannic acid, showed high enzyme inhibition activity against 5a-reductase in an in vitro model.
September 2020 in “Current Enzyme Inhibition” In this study, researchers found that steroidal 17β-carboxamides 1-4 significantly inhibited 5α-reductase enzyme activity and reduced prostate weight more effectively than finasteride in a hamster model, without toxic side effects, suggesting potential for treating benign prostatic hyperplasia.
August 2025 in “ACS Omega” This study synthesized and evaluated hydroxycinnamate derivatives for their ability to inhibit human SRD5A1, finding that three compounds showed significant inhibitory activity and low cytotoxicity. Compound 10a notably reduced SRD5A1 protein expression in cells, suggesting potential for nonsteroidal treatment of androgen-related conditions.
3 citations
,
September 2016 in “Natural Product Communications” This study identified 8-hydroxy germacrene B from Curcuma aeruginosa as a highly potent in-vitro 5-alpha reductase inhibitor with significant anti-androgenic activity, while exhibiting mild cytotoxicity on prostate cancer cells without affecting human dermal papilla cells at tested concentrations.
19 citations
,
June 2010 in “Journal of acupuncture and meridian studies” This study found that emodin from Polygonum multiflorum showed 5alpha-reductase inhibitory activity, which was more potent than alizarin but less potent than riboflavin.
January 2026 in “Frontiers in Natural Products” This study found that combining shikimic acid with Prunus mume fruit extract significantly reduces type I 5α-reductase levels in testosterone-stressed skin sebocytes, surpassing the effects of shikimic acid or standard acne treatments alone, and shows promise for stable, non-irritating acne remedies in cosmetic formulations.
89 citations
,
February 1993 in “Journal of Medicinal Chemistry” This research article focuses on nonsteroidal inhibitors of human type I steroid 5-alpha-reductase but reports no new results.
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.
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.