223 citations
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December 2010 in “The Journal of Sexual Medicine” This review discusses persistent adverse effects of 5α‐reductase inhibitors, like diminished libido and erectile dysfunction, in some patients and highlights the need for patient discussions before therapy, especially for androgenetic alopecia.
3 citations
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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.
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.
January 2008 in “OhioLink ETD Center (Ohio Library and Information Network)” This study found evidence of structurally and functionally distinct AR-SARM protein complexes, which may contribute to understanding how SARMs achieve tissue-selective effects.
November 2023 in “Expert Opinion on Pharmacotherapy” This abstract does not provide any specific results or findings but describes male androgenic alopecia as a progressive and psychologically distressing hair-loss disorder involving hair follicle miniaturization.
13 citations
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January 2019 in “Endocrine journal” This study found that transdermal DHT treatment increased penile length in boys with 5α-reductase type 2 deficiency, but post-pubertal growth was limited and carried potential prostate complications.
15 citations
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July 2016 in “Urologic Clinics of North America” This study found that combining 5-alpha reductase inhibitors with alpha-blockers provided the best symptomatic relief and reduced the risk of clinical progression for BPH, while PDE5 inhibitors could offset sexual side effects.
January 2019 in “Oncogen” This report suggests that for prostate cancer patients with cardiovascular disease, prescribing the GnRH antagonist degarelix may reduce cardiac events compared to using GnRH agonists, although prescribing should consider potential cardiac risks, particularly in patients with pre-existing conditions or older age.
1 citations
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July 2018 in “Current Sexual Health Reports” This review discusses the occurrence of persistent sexual, physical, neurological, and psychiatric side effects known as post-finasteride syndrome after 5x-reductase inhibitor treatment, and emphasizes the importance of evaluating these risks for patients with benign prostatic hyperplasia or androgenic alopecia.
18 citations
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December 2005 in “Journal of Medicinal Chemistry” In this study, novel substituted benzoyl benzoic acids and phenylacetic acids were potent and selective inhibitors of human steroid 5alpha-reductase type 2, with one compound showing promising bioavailability in rats for potential clinical evaluation.
111 citations
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August 2015 in “Reviews in Endocrine and Metabolic Disorders” 5α-reductase inhibitors may cause persistent sexual dysfunction and depression, needing more research on long-term effects.
27 citations
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February 2005 in “Journal of Cellular Biochemistry” This study found that rat male costochondral chondrocytes, unlike female chondrocytes, respond to testosterone through metabolism to dihydrotestosterone, which shows a maturation-state dependent effect in male growth plate cells.
32 citations
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January 1990 in “Clinical Endocrinology” This study found that women with female pattern androgenic alopecia have significantly higher levels of certain androgens and androgen sulfates compared to normal premenopausal women, suggesting markers for diagnosis and treatment efficacy.
December 2022 in “Acta Ophthalmologica” In this study, dutasteride treatment in retinitis pigmentosa mice increased photoreceptor survival and reduced glial activation, suggesting it may offer a neuroprotective effect.
26 citations
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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.
23 citations
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July 1979 in “Canadian journal of biochemistry” This study found that administering spironolactone or canrenone to castrated male rats significantly decreased the availability of cytoplasmic androgen receptor binding sites, suggesting canrenone mediates spironolactone's antiandrogenic effects in skin.
September 2025 in “Consilium Medicum” This study discusses the role of 5α-reductase inhibitors in managing lower urinary tract symptoms caused by benign prostatic hyperplasia and suggests their potential use in other conditions like prostate cancer chemoprevention and androgenetic alopecia treatment, emphasizing appropriate dosing to reduce surgical complications.
2 citations
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August 2017 in “Drug and therapeutics bulletin” This article reviews various updates in dermatology, including drug safety alerts and treatment options, and reports no new clinical results.
This study found that using 5α-reductase inhibitors during active surveillance for low-risk prostate cancer reduced prostate volume by 23% and was associated with a lower progression rate.
18 citations
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November 2012 in “Current opinion in urology” This review discusses hormonal control and treatment options for benign prostatic hyperplasia, highlighting similar efficacy and safety between finasteride and dutasteride, and reports no clinical results; further studies are suggested for new therapeutic agents.
22 citations
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August 2014 in “Clinical endocrinology” This study suggests that the use of finasteride for benign prostate hyperplasia may increase the risk of osteoporosis diagnosis, particularly at higher doses.
August 2024 in “Research Square (Research Square)” This study found that women taking 5α-reductase inhibitors (5aRI) for alopecia had a lower risk of breast cancer compared to those not using these medications, with no increased risk of developing ovarian or endometrial cancer.
December 2022 in “JAMA network open” This study found that men using 5-alpha-reductase inhibitors showed an increased risk for dementia shortly after starting treatment, which diminished over time, and a consistent association with depression, but no link to suicide.
5 citations
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January 2022 in “Clinical cancer investigation journal” This study suggests that certain Dibenzo derivatives may be promising candidates for prostate cancer treatment due to their potential interactions with the androgen receptor and 5α-reductase enzyme.
47 citations
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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.
August 2025 in “medRxiv (Cold Spring Harbor Laboratory)” This study reports that using 5-alpha reductase inhibitors is associated with a 31% increased risk of depression, highlighting that the choice of comparator group significantly affects study results.
91 citations
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May 2003 in “PubMed” This study found that neuroactive steroids, through their interaction with the sigma1 receptor, influence the acquisition of cocaine's rewarding effects in mice, suggesting a role in drug addiction vulnerability.
22 citations
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February 2002 in “Planta Medica” In this study, osthenol was identified as a highly potent inhibitor of 5alpha-reductase type I in LNCaP cells, significantly outperforming finasteride.
2 citations
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September 2025 in “Frontiers in Endocrinology” This review critically evaluates the evidence for SARMs' tissue selectivity and suggests their clinical benefits over traditional androgens are not yet well-supported by robust evidence, underscoring the need for further head-to-head trials.
19 citations
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July 2005 in “Steroids” In this study, researchers developed a sensitive LC–MS–MS assay to measure 3α-androstanediol levels in rat plasma and observed that testosterone raises these levels via a 5α-reductase pathway.