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Glossary5α-reductase (SRD5A)

enzyme converting testosterone into potent dihydrotestosterone (DHT)

5α-reductase is an enzyme that converts testosterone into dihydrotestosterone (DHT), a more potent androgen hormone. This enzyme plays a significant role in various biological processes, including the development of male characteristics and the regulation of hair growth. Inhibitors of 5α-reductase, such as finasteride, are commonly used to treat conditions like male pattern baldness and benign prostatic hyperplasia.

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research SRD5A3 Is Required for Converting Polyprenol to Dolichol and Is Mutated in a Congenital Glycosylation Disorder

260 citations, July 2010 in “Cell”

Mutations in the SRD5A3 gene cause a new type of glycosylation disorder by blocking the production of a molecule necessary for protein glycosylation.

Selected Variants of the Steroid-5-Alpha-Reductase Isoforms SRD5A1 and SRD5A2 and the Sex Steroid Hormone Receptors ESR1, ESR2, and PGR: No Association with Female Pattern Hair Loss Identified

research Selected Variants of the Steroid-5-Alpha-Reductase Isoforms SRD5A1 and SRD5A2 and the Sex Steroid Hormone Receptors ESR1, ESR2, and PGR: No Association with Female Pattern Hair Loss Identified

18 citations, February 2012 in “Experimental Dermatology”

No link found between specific genes and female pattern hair loss.

research Effects on Steroid 5-Alpha Reductase Gene Expression of Thai Rice Bran Extracts and Molecular Dynamics Study on SRD5A2

14 citations, April 2021 in “Biology”

Thai rice bran extracts, especially from Tubtim Chumphae rice, can significantly reduce the activity of hair loss genes, with x-tocopherol showing potential as an anti-hair loss product.

In Vitro and In Vivo Regulation of SRD5A mRNA Expression of Supercritical Carbon Dioxide Extract from Asparagus Racemosus Root as Anti-Sebum and Pore-Minimizing Active Ingredients

research In Vitro and In Vivo Regulation of SRD5A mRNA Expression of Supercritical Carbon Dioxide Extract from Asparagus Racemosus Root as Anti-Sebum and Pore-Minimizing Active Ingredients

8 citations, February 2022 in “Molecules”

Asparagus racemosus root extract reduced sebum and pore size in men but not in women.

research Altered Methylation Pattern of the SRD5A2 Gene in the Cerebrospinal Fluid of Post-Finasteride Patients: A Pilot Study

8 citations, July 2019 in “Endocrine connections”

Finasteride affects SRD5A2 gene pattern, possibly causing lasting side effects.

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Community Join

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community Anyone experienced weight gain on dutasteride?

in Finasteride/Dutasteride 6 upvotes 2 years ago

Dutasteride can lead to increased cholesterol and liver fat. The user is reconsidering its use due to high cholesterol and lipid levels despite a healthy lifestyle.

community A systematic bro-science review of DHT, 5AR, neurosteroids, sexual health and 5AR inhibitors

in Research/Science 37 upvotes 2 years ago

Hair loss treatments, specifically 5AR inhibitors, can impact neurosteroids and sexual health. The effects of topical fin/dut on tissue-specific DHT levels are unclear.

community CRISPR Is Curing People Right Now. Genetic Hair Loss is Next?

in Technology 107 upvotes 3 months ago

CRISPR shows promise for treating hair loss by targeting specific genes. Current treatments include Minoxidil and finasteride, but CRISPR could offer a more precise solution, though it is still expensive and in early stages.

community My hair after 3 steroid cycles

in Progress Pictures 27 upvotes 6 months ago

A user shared their hair progress after three steroid cycles, using 5% minoxidil and 100mg RU58841 daily. They are considering a hair transplant due to paranoia about shedding.

community M44 Hairloss Trichotest and Finasteride

in Finasteride/Dutasteride 6 upvotes 1 year ago

User received Trichotest results not recommending Finasteride. They are on Oral Minoxidil 2.50 and considering adding Finasteride.

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