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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 9 Role of 5α-reductase in health and disease

101 citations , April 1994 in “Baillière's clinical endocrinology and metabolism”

This review discusses the role of 5α-reductase enzymes in androgen action and related disorders, noting that their specific inhibitory drugs show promise for conditions like benign prostatic hypertrophy; it reports no new clinical results.

Nonsteroidal Inhibitors of Human Type I Steroid 5α-Reductase

research Nonsteroidal inhibitors of human type I steroid 5-.alpha.-reductase

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.

Dihydrotestosterone Stimulates 5α-Reductase Activity in Pubic Skin Fibroblasts

research Dihydrotestosterone Stimulates 5a-Reductase Activity in Pubic Skin Fibroblasts*

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.

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Community Join

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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 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 Intriguing Molecular Structures and Questions (DHT, Progesterone, Fin, etc)

7 upvotes 2 years ago

The conversation discusses the molecular structures of compounds that reduce DHT levels, including finasteride and Ashwagandha. It explores the potential of using Ashwagandha topically as a 5a reductase inhibitor.

community 3 months 5g Min only before/after, 26 y/o

in Is this regrowth? 451 upvotes 1 year ago

The user experienced significant hair regrowth after three months of using 5 mg oral minoxidil nightly and plans to add finasteride to maintain progress. Many recommend combining minoxidil with finasteride or dutasteride to prevent future hair loss.

community Mechanism of action of alfatradiol (17 alpha estradiol)

5 upvotes 2 years ago

The conversation discusses the mechanism of action of alfatradiol (17 alpha estradiol) in treating hair loss. It explores theories that it either inhibits 5 alpha reductase to prevent T->DHT conversion or aromatizes scalp T into 17-alpha-estradiol to save hair.

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