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Overexpression of Aldo-Keto Reductase 1C3 in LNCaP Cells Diverts Androgen Metabolism Towards Testosterone Resulting in Resistance to the 5α-Reductase Inhibitor Finasteride

research Overexpression of aldo-keto reductase 1C3 (AKR1C3) in LNCaP cells diverts androgen metabolism towards testosterone resulting in resistance to the 5α-reductase inhibitor finasteride

45 citations , January 2012 in “The Journal of Steroid Biochemistry and Molecular Biology”

This study found that overexpression of AKR1C3 in prostate cancer cells redirected androgen metabolism towards testosterone production, which facilitated cell proliferation, potentially reducing the effectiveness of finasteride treatment.

Effect of Testosterone Supplementation With and Without a Dual 5α-Reductase Inhibitor on Fat-Free Mass in Men With Suppressed Testosterone Production

research Effect of Testosterone Supplementation With and Without a Dual 5α-Reductase Inhibitor on Fat-Free Mass in Men With Suppressed Testosterone Production

124 citations , March 2012 in “JAMA”

This abstract discusses the unclear role of dihydrotestosterone (DHT) in postembryonic life in marsupials and possibly humans, reporting no new findings.

research Negative Impact of Testosterone Deficiency and 5α-Reductase Inhibitors Therapy on Metabolic and Sexual Function in Men

31 citations , January 2017 in “Advances in Experimental Medicine and Biology”

This review discusses the negative health impacts of testosterone deficiency and the potential adverse effects of 5α-reductase inhibitors, emphasizing the need for patient-physician discussions regarding these treatments.

research Screening 5a-reductase Inhibitors from Plant Extraction for Treatment of Androgenic Alopecia in vitro

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.

research Selective non-steroidal inhibitors of 5α-reductase type 1

49 citations , January 2004 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology”

This review discusses the development and selectivity of 5 alpha-reductase inhibitors, particularly non-steroidal ones, and reports no new clinical trial results.

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Community Join

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community Supposedly dairy contains precursors to DHT that are already 5a-reduced and convert to DHT independent of 5a-reductase inhibition

26 upvotes 5 months ago

Dairy may contain DHT precursors that could affect hair loss and prostate health, with some users noting reduced hair shedding after eliminating dairy. Individual responses to dairy and DHT blockers vary, with some attributing hair health to diet changes and others seeing no impact.

community Did anybody use beta sisterol for hair loss? I saw in many articles in the internet that said that beta sisterol blocks dht by inhibiting 5a reductase type 2 enzyme and some reviews of people who said that it worked better than saw palmetto in terms of stoping hair loss and helping prostate.

in Research/Science 9 upvotes 3 years ago

Beta-sitosterol may inhibit 5-alpha reductase type 2 enzyme, potentially reducing DHT levels and promoting hair growth, similar to finasteride but possibly with fewer side effects. Its effectiveness and side effects compared to other treatments like saw palmetto and finasteride remain uncertain due to limited research.

community Connection between Finasteride and cortisol???

3 upvotes 2 years ago

Finasteride may temporarily increase cortisol levels by inhibiting the 5a-reductase enzyme, potentially causing fatigue and insomnia. The body might adjust over time, but some users report prolonged issues with elevated cortisol and sleep disturbances.

community Testosterone in Reference Range Doesn't Cause Hair Loss

52 upvotes 2 years ago

Testosterone within the normal range does not significantly contribute to male pattern baldness (MPB); DHT is the main factor that can be controlled. Genetics play a crucial role in hair loss, and treatments like finasteride and dutasteride, which block DHT, can help despite potentially raising testosterone levels.

community Scalp testosterone does NOT cause hair loss, what is this baseless claim ?

in Research/Science 13 upvotes 5 months ago

DHT, not testosterone, causes hair loss. Treatments like finasteride, dutasteride, and RU58841 target DHT to manage hair loss.

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Learn

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learn Cyproterone

a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor

learn RU58841

a potent but unapproved and potentially problematic topical anti-androgen

learn Pyrilutamide

highly targeted anti-androgen that might have minimal systemic effects

learn Clascoterone

a novel topical treatment that inhibits DHT on androgen receptors

learn Minoxidil

An essential vasodilator with some anti-androgenic effects

learn Bicalutamide

Can bicalutamide stop DHT from shrinking your hair follicles? Bicalutamide blocks androgens at the receptor rather than lowering DHT, and some dermatologists prescribe it off-label for women with pattern hair loss. The published evidence is retrospective case series and one small pilot study, with no randomized trial; it is a prescription drug that requires liver monitoring and is contraindicated in pregnancy.

learn Follistatin

How does follistatin compare to finasteride or dutasteride for treating androgenic alopecia? Finasteride and dutasteride are prescription drugs with large controlled trials showing they lower DHT and slow androgenic hair loss, at the cost of documented hormonal side effects; follistatin targets a different, regenerative pathway but has only one small phase 1 human trial behind it, so it is experimental with unknown safety rather than a comparable alternative.

learn Fluridil

How is Fluridil different from other DHT blockers like finasteride? Fluridil is a topical androgen-receptor blocker applied to the scalp, while finasteride is an oral 5-alpha-reductase inhibitor that lowers DHT throughout the body. Finasteride is FDA-approved and far better studied; Fluridil rests on one 43-man trial and is not licensed as a hair-loss medicine, so its long-term safety and effect size are unknown.

learn Finasteride

Is Finasteride unbeatable or are there equally powerful alternatives? Trials report finasteride as the single medication with the strongest measured effect in male androgenetic alopecia, while dutasteride, minoxidil, topical finasteride, PRP, LLLT and microneedling all have supporting studies and are often reported to work better in combination. Finasteride, dutasteride and oral minoxidil are prescription-only, and several of these uses are off-label.

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