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research The 5 Alpha-Reductase Isozyme Family: A Review of Basic Biology and Their Role in Human Diseases

218 citations , December 2011 in “Advances in Urology”

The document concludes that the 5 alpha-reductase enzymes are important in steroid metabolism and related to various human diseases, with inhibitors used to treat conditions like male pattern baldness and prostate issues.

Rat Steroid 5α-Reductase Kinetic Characteristics: Extreme pH-Dependency of the Type II Isozyme in Prostate and Epididymis Homogenates

research Rat steroid 5α-reductase kinetic characteristics: Extreme pH-dependency of the type II isozyme in prostate and epididymis homogenates

13 citations , August 1995 in “The Journal of Steroid Biochemistry and Molecular Biology”

The activity of a specific rat enzyme in the prostate and epididymis is highly dependent on the acidity level.

research Cyclohex-1-ene Carboxylic Acids: Synthesis and Biological Evaluation of Novel Inhibitors of Human 5α Reductase

6 citations , March 2003 in “Archiv Der Pharmazie”

Scientists made new substances that can block an enzyme linked to prostate issues and hair loss, with potential for creating a new treatment.

Synthesis of Phenanthridin-3-One Derivatives: Non-Steroidal Inhibitors of Steroid 5-Alpha-Reductase

research Synthesis of phenanthridin-3-one derivatives: Non-steroidal inhibitors of steroid 5-α-reductase

20 citations , June 1995 in “Tetrahedron Letters”

New chemicals were made that can block an enzyme linked to hair loss, prostate growth, and acne.

research LY191704: a selective, nonsteroidal inhibitor of human steroid 5 alpha-reductase type 1.

53 citations , June 1993 in “Proceedings of the National Academy of Sciences of the United States of America”

LY191704 is a compound that effectively blocks a specific enzyme involved in hormone conversion and could help treat enlarged prostate and hair loss.

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community 28M experiencing thinning - first timer here, please help

in Treatments 370 upvotes 8 months ago

A 28-year-old male experiencing hair thinning is considering minoxidil and finasteride. Minoxidil helps regrow hair, while finasteride prevents further loss; both are usually lifelong treatments.

community Finasteride affects both 5a reductase and 5b reductase

8 upvotes 6 years ago

Finasteride not only inactivates the 5a reductase enzyme but also affects the 5b reductase enzyme in a dose-dependent manner, which can impact sexual behavior and brain activity. The user experienced significant hair regrowth and side effects on 1mg of finasteride, which diminished after reducing the dose to 0.5mg, leading to no side effects and further hair improvement.

community From the research study: "Dihydrotestosterone and the concept of 5a-reductase inhibition in human benign prostatic hyperplasia" - G. Bartsch, R.S. Rittmaster, H. Klocker (2002) in the "World Journal of Urology".

in Research/Science 23 upvotes 4 years ago

Dutasteride is a stronger 5AR inhibitor than finasteride and can significantly lower DHT levels. Reduced doses of dutasteride may lower side effects.

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

in Research/Science 25 upvotes 3 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.

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