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Glossary Androgen Receptor

protein in cells that binds male hormones to regulate genes

The androgen receptor (AR) is a type of protein found inside cells that binds to androgens, which are male hormones like testosterone and dihydrotestosterone. This binding activates the receptor, allowing it to enter the cell nucleus and influence the expression of specific genes, playing a crucial role in the development and maintenance of male characteristics, as well as in conditions like androgenic alopecia (male pattern baldness).

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Research

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research Androgen receptor in rat liver: Characterization and separation from a male-specific estrogen-binding protein

24 citations , January 1989 in “Archives of biochemistry and biophysics”

This study found that androgen binding in male rat livers involves specific androgen receptors, which decrease with castration and are inducible in female livers with testosterone.

research Efficacy of metformin therapy in adolescent girls with androgen excess: relation to sex hormone–binding globulin and androgen receptor polymorphisms

15 citations , August 2010 in “Fertility and sterility”

This study found that girls with polycystic ovary syndrome and longer SHBG and AR gene repeats experienced greater improvements in lipid and androgen levels after one year of metformin treatment.

research Relative binding affinity of novel steroids to androgen receptors in hamster prostate

5 citations , January 2005 in “Journal of Enzyme Inhibition and Medicinal Chemistry”

This study found that certain steroidal compounds, especially 10a–10c, demonstrated strong antiandrogenic activity by binding to the androgen receptor and reducing prostate weight in a hamster model.

Crystallization and Preliminary X-Ray Analysis of the Human Androgen Receptor Ligand-Binding Domain with a Coactivator-Like Peptide and Selective Androgen Receptor Modulators

research Crystallization and preliminary X-ray analysis of the human androgen receptor ligand-binding domain with a coactivator-like peptide and selective androgen receptor modulators

1 citations , November 2008 in “Acta crystallographica”

This study reports the crystallization of the human androgen receptor's ligand-binding domain with nonsteroidal ligands, which may aid in understanding the differences in binding compared to steroidal ligands.

research Discovery of an Androgen Receptor Degrader Featuring a Pyridazinyl Glutarimide CRBN-Binding Motif for Transdermal Treatment of Androgenetic Alopecia

May 2026 in “Journal of Medicinal Chemistry”

In this study, the authors developed a novel PROTAC named dAR-6–1, which demonstrated superior hair regeneration in an AGA mouse model compared to minoxidil, highlighting its promise as a therapy due to potent AR degradation and excellent skin permeability.

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Community Join

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community Bicalutamide effect on androgens?

5 upvotes 5 years ago

Bicalutamide blocks androgen receptors, preventing testosterone and DHT from binding, which can help with hair loss but may cause feminization. It is not recommended for those who do not want feminization effects.

community Having androgen receptor density and sensitivity at wrong f*ing place

in Satire 7 upvotes 1 year ago

The conversation discusses hair loss treatments, focusing on the use of topical minoxidil, microneedling, finasteride, and dutasteride, while debating the role of testosterone and DHT in hair loss. It also touches on the potential liver health impacts of these treatments and the genetic sensitivity of hair follicles to androgens.

community Is there a topical androgen receptor blocker so we don't have to fuck with the enzyme and destroy our allopregnanolone, but go and hit the end target straight?

in Treatment 44 upvotes 2 years ago

The conversation discusses topical androgen receptor blockers for hair loss, mentioning Clascoterone, Pyrilutamide, GT20029, and RU58841. Ketoconazole's effectiveness and application methods are also debated.

community Why was fluridil abandoned and never made past phase 2?

5 upvotes 4 years ago

Fluridil was abandoned due to its weak effectiveness and low binding affinity to the androgen receptor, making it less competitive against DHT and testosterone. Users discuss its limited results compared to other treatments like pyrilutamide and RU58841.

community How is the GT20029 different to pyrilutamide as an androgenic antagonist

1 year ago

GT20029 and pyrilutamide are both androgen antagonists but work differently; GT20029 degrades the androgen receptor, while pyrilutamide blocks DHT from binding. GT20029 is expected to have similar efficacy to CosmeRNA.

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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 GT20029

research compound made to degrade androgen receptors in scalp

What is GT20029 and how does it work as a topical anti-androgen for hair loss? GT20029 is a topical anti-androgen that degrades androgen receptors to combat hair loss.

learn Exosomes

What does Fluridil do on the scalp, and how does it block the DHT hormone? Fluridil blocks DHT by binding to androgen receptors in hair follicles, preventing hair loss.

learn Bicalutamide

a nonsteroidal anti-androgen, most commonly used orally for women

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 Overview

learn Stem Cell Factor

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 KX-826

Kintor Pharmaceutical: KX-826, a New Name in Hair Loss Research KX-826 (pyrilutamide) is an experimental topical androgen receptor blocker from Kintor Pharmaceutical. It is not approved as a medicine anywhere; the company reports that its China Phase III trial met its primary endpoint at 24 weeks, but the trial data has been released through corporate announcements rather than peer-reviewed journals and long-term safety is unknown.

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