237 citations
,
December 2001 in “Urology” This review discusses the role of 5α-reductase in prostate development and BPH, and reports no new clinical results; ongoing trials are exploring dual isozyme inhibitors for improved treatment efficacy.
41 citations
,
March 1998 in “Archives of Dermatological Research” This study found that androgen metabolism within hair follicles varies significantly between compartments, with dermal papillae showing high 5α-reductase activity, suggesting a key role in androgen-driven hair growth responses.
20 citations
,
March 2017 in “Reproductive Biology and Endocrinology” Women with PCOS have higher 5α-reductase activity, which may be linked to insulin resistance.
![Synthesis and Activity of 8-Substituted Benzo[c]quinolizin-3-ones as Dual Inhibitors of Human 5α-Reductases 1 and 2](/images/assets/efc54340-66d6-4f27-9930-045ac023f903/small/15248.jpg)
9 citations
,
November 2004 in “Bioorganic & Medicinal Chemistry Letters” This study identified potent dual inhibitors of 5α-reductases 1 and 2 that may aid in designing new drugs for related diseases.
This study reported that methanolic extracts from marine sponges, particularly Petrosia sp. and Agelas nakamurai, showed significant enzyme inhibitory activities, with Petrosia sp. exhibiting notable 5?-reductase inhibition.
25 citations
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November 2015 in “Journal of Ethnopharmacology” This study found that Cacumen platycladi extract significantly promoted hair growth and reduced dihydrotestosterone levels by inhibiting 5α-reductase activity in an androgen-sensitive mouse model.
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.
1 citations
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April 2022 in “Applied sciences” This study reports the development of a microemulsion using Momordica charantia extract, which demonstrated strong antioxidant and 5α-reductase inhibitory activity, potentially aiding hair loss management. The microemulsion was stable over 12 weeks, suggesting its future potential for cosmetic or pharmacological applications.
August 2021 in “International Journal of Research in Dermatology” This study observed that Amarantha hair oil contains β-sitosterol, which is suggested to promote hair growth.
January 2023 in “Rasayan journal of chemistry/Rasayan journal of Chemistry” This study suggests that compounds from Sansevieria trifasciata Prain may have promising potential as effective 5α-reductase inhibitors for alopecia treatment, outperforming finasteride in binding affinity tests.
December 2017 in “Dong-ui saengni byeongni hakoeji” This study found that Cynanchi Wilfordii Radix has strong antioxidant activity and may reduce key factors involved in male hair loss in dermal papilla cells.
40 citations
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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.
32 citations
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September 2011 in “Journal of Neuroendocrinology” In this study, inhibiting the formation of 5α-reduced steroids in pregnant rats shortened gestation time, reduced litter size, and impaired cognitive and neuroendocrine function in their juvenile offspring.
24 citations
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February 2007 in “Hormone and metabolic research” This study suggests that inhibiting 5α-reductase activity alone, particularly with the type 1 inhibitor MK386, may not effectively reduce sebocyte activity or improve acne.
14 citations
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July 2016 in “Journal of Endocrinology” This study observed that equine epididymis mainly expresses the type 1 isoform of 5α-reductase and effectively converts progesterone and testosterone to DHP and DHT, while finasteride and dutasteride inhibited this activity.
![Synthesis and 5α-Reductase Inhibitory Activity of 8-Substituted Benzo[ƒ]Quinolinones Derived from Palladium Mediated Coupling Reactions](/images/assets/2aedba8c-b0ac-4fa3-9ac7-9f375a016bba/small/15581.jpg)
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.
![Activity of 17β-(N-Alkyl/Arylformamido) and 17β-[(N-Alkyl/Aryl) Alkyl/Arylamido]-4-Methyl-4-Aza-5α-Androstan-3-Ones as 5α-Reductase Inhibitors in the Hamster Flank Organ and Ear](/images/assets/861159f1-7bd4-420c-a16b-4829458efe68/small/15592.jpg)
10 citations
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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.
8 citations
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March 2012 in “Mass spectrometry letters” This study observed that the isotope-dilution GC-MS technique can assess 5α-reductase activity more effectively than conventional methods in rat liver S9 fractions, particularly at low testosterone levels.
8 citations
,
October 1998 in “Comparative Biochemistry and Physiology Part C: Pharmacology, Toxicology and Endocrinology” Proscar (finasteride) blocks 5α-reductase in sea urchin ovaries and testes, suggesting potential treatment for androgen-related conditions.
January 2009 in “Lishizhen Medicine and Materia Medica Research” The researchers reported that the aqueous extract of Urtica fissa E.Pritz inhibited 5α-reductase activity in vitro.
186 citations
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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.
33 citations
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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.
April 2011 in “Journal of Medicinal Plants Research” This study found that Ocimum basilicum L. showed the highest 5α-reductase inhibitory activity among ten Thai plants, despite no correlation between enzyme inhibition and total phenolic content.
3 citations
,
June 2018 in “Bioorganic & medicinal chemistry” This study identified that derivatives 4, 4b, and 4c strongly inhibited the enzyme type 1 5α-reductase and decreased reproductive organ weights in hamsters, suggesting potential as prodrugs for prostate tumor growth inhibition.
February 2025 in “Global Academic Journal of Pharmacy and Drug Research” This study reported that compounds from the root of Beta vulgaris, specifically 4-picoline and Betalain, showed potential as effective anti-hair loss treatments by demonstrating significant inhibitory activity against the enzyme 5α-reductase in a computational molecular docking study.
34 citations
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February 1999 in “Journal of Dermatological Science” This study found that minoxidil increased 17ß-hydroxysteroid dehydrogenase activity by nearly 40% in dermal papilla cells from balding scalps but not in nonbalding scalp cells or dermal fibroblasts.
28 citations
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February 1999 in “Archives of Dermatological Research” Finasteride potentially treats hair loss by reducing DHT production.
17 citations
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January 2013 in “Talanta” A new method was developed to accurately measure enzyme activity related to prostate health.
6 citations
,
April 2017 in “Frontiers in Pharmacology” This study found that several compounds from Yangxue Shengfa capsule may promote hair growth by enhancing cell proliferation in vitro, suggesting potential use in treating androgenetic alopecia.
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.