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Glossary 5α-reductase activity

enzyme converts testosterone into potent androgen dihydrotestosterone (DHT)

5α-reductase activity refers to the function of the enzyme 5α-reductase, which converts testosterone into dihydrotestosterone (DHT), a more potent androgen. This process is significant in various biological functions, including the development of male characteristics and the regulation of hair growth. Elevated 5α-reductase activity is often associated with conditions like androgenetic alopecia (male pattern baldness) and benign prostatic hyperplasia.

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research 5α-reductase activity in the prostate

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.

research 5α-Reductase activity in the human hair follicle concentrates in the dermal papilla

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.

research 5α-reductase activity in women with polycystic ovary syndrome: a systematic review and meta-analysis

20 citations , March 2017 in “Reproductive Biology and Endocrinology”

Women with PCOS have higher 5α-reductase activity, which may be linked to insulin resistance.

research Synthesis and activity of 8-substituted benzo[c]quinolizin-3-ones as dual inhibitors of human 5α-reductases 1 and 2

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.

research Enzyme Inhibitory Activities of Marine Sponges Against Cholinesterase and 5α-Reductase

June 2019

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.

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community Does caffeine inhibit 5-α-reductase?

4 upvotes 6 years ago

Caffeine may promote hair growth and potentially inhibit 5-α-reductase activity in hair follicles, but its effectiveness and systemic impact remain unclear. Users discuss using topical caffeine solutions, with some experiencing no side effects compared to finasteride.

community 5 alpha reductase type 1 is in brain tissue producing the main endogenous gabaergic allopregnanolone, not 2. How can finasteride as a 5ar2 lower that?

27 upvotes 1 year ago

Finasteride and dutasteride are discussed for hair loss, with concerns about their effects on neurosteroids and potential side effects like depression. Alternatives like topical estrogen and lifestyle changes are considered, with varying opinions on mental health and hair regrowth.

community Sugar and Hair loss connections

in Research/Science 41 upvotes 1 year ago

High sugar diets may worsen hair loss by increasing 5α-reductase activity and androgen levels, especially in women with PCOS. A low sugar diet might reduce scalp DHT levels, similar to finasteride, but genetics also significantly influence hair loss.

community Androsterone as a Neurosteroid Replacement Strategy for 5α-Reductase Inhibitor–Associated Sexual and Affective Dysfunction

in Research/Science 36 upvotes 2 months ago

Androsterone may help with sexual and affective dysfunction from finasteride by replacing disrupted neurosteroids without increasing androgenic side effects. Controlled testing is needed to confirm its effectiveness and safety.

community What About Phytosterol Alternatives - Rice Bran Oil - Natural DHT Blockers

3 upvotes 2 years ago

The conversation discusses natural DHT blockers like rice bran oil, which may reduce 5α-reductase activity similarly to Minoxidil and Dutasteride. One user argues that finasteride is more reliable and effective than natural alternatives.

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