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The G-Protein Coupled Receptor Kinase 2 (GRK2) Orchestrates Hair Follicle Homeostasis

research The G-Protein Couple Receptor Kinase 2 (GRK2) Orchestrates Hair Follicle Homeostasis

April 2024 in “bioRxiv (Cold Spring Harbor Laboratory)”

In a keratinocyte-specific knockout mouse model, this study found that deleting GRK2 disrupted hair follicle homeostasis, causing cyst-like structures, abnormal growth patterns, and eventual hair loss, suggesting potential links to immune-mediated alopecias.

research SOCS3 treatment prevents the development of alopecia areata by inhibiting CD8+ T cell-mediated autoimmune destruction

16 citations , March 2017 in “Oncotarget”

This study suggests that SOCS3 treatment may effectively inhibit alopecia areata by suppressing CD8+ T cell activity and IFN-γ production.

research Hair follicle immune privilege in autoimmune and immune-mediated alopecias: paths toward reestablishing immune tolerance

March 2026 in “Frontiers in Medicine”

This study provides a framework for understanding different types of alopecias based on immune privilege collapse at specific follicular sites, revealing distinct patterns in immune effector programs and stromal influences depending on the alopecia type.

research Frontal Fibrosing Alopecia. An Example of Disrupted Aryl Hydrocarbon Receptor-Mediated Immunological Homeostasis in the Skin?

8 citations , July 2020 in “Clinical, cosmetic and investigational dermatology”

This review hypothesizes that excessive facial photo-protection may contribute to frontal fibrosing alopecia by disrupting immunological homeostasis through the aryl hydrocarbon receptor-kynurenine pathway, but it reports no new clinical results.

research RETRACTED: Explore the genetic exposure to alopecia areata

2 citations , July 2024 in “Skin Research and Technology”

Copper may protect against alopecia areata, while certain inflammatory markers increase risk.

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Community Join

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community Prolactin the Cause of Hair Loss? ABS-201 the Cure?

29 upvotes 2 months ago

Prolactin may contribute to hair loss, but targeting its receptor won't cure androgenetic alopecia. ABS-201 could be a useful alternative or adjuvant therapy, similar to JAK inhibitors, but not more effective than HMI-115.

community The Real Cause Of Androgenetic Alopecia

675 upvotes 1 year ago

Androgenetic alopecia is caused by DHT affecting hair growth. Finasteride and minoxidil are used to manage hair loss by blocking DHT and promoting hair growth.

community DHT Harms Scalp Microbiome: DHT Itch is REAL

413 upvotes 1 year ago

Increased Malassezia and Cutibacterium in the scalp microbiome are linked to higher sebum production and inflammation in androgenetic alopecia (AGA). Treatments include ciclopirox shampoo, benzoyl peroxide shampoo, clobetasol propionate, calcipotriol, minoxidil, finasteride, and dutasteride.

community Another molecular pathway to promote scarless healing and regenerate hair follicles

14 upvotes 8 months ago

Carnosic acid in rosemary extract may enhance skin repair and promote hair follicle regeneration. It could be used alone or with verteporfin for scarless healing after dermal wounding.

community PP405: The Ultimate Hair Loss Drug for Complete Hair Growth

211 upvotes 1 year ago

PP405 is a new hair loss treatment in phase 2 trials that may promote hair growth by increasing lactate production and activating hair follicle stem cells. It could potentially replace hormone-disrupting treatments like Minoxidil and finasteride.

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Learn

7 / 7 results

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Stem Cell Factor

learn Baricitinib

JAK inhibitor that reduces inflammation and immune attacks on hair follicles, leading to potential hair regrowth, especially in alopecia areata cases

learn Alopecia Areata

autoimmune disorder causing patchy hair loss

learn Neem Oil

natural substance from Neem tree with medicinal and pesticidal properties

learn TDM-105795

What types of alopecia or hair loss conditions might TDM-105795 be designed to target based on current research? TDM-105795 may target non-scarring alopecia, particularly androgenetic alopecia.
How does TDM-105795 differ from more established hair loss ingredients when included in experimental or emerging treatments? TDM-105795 targets thyroid hormone receptors, differing from established treatments like minoxidil and finasteride.

learn Tofacitinib

What is tofacitinib, and why is it discussed in relation to autoimmune-related hair loss such as alopecia areata? Tofacitinib is a prescription JAK inhibitor approved for rheumatoid arthritis, psoriatic arthritis and ulcerative colitis — not for alopecia areata. It is discussed for hair loss because a 2014 case report and a 2016 open-label trial reported regrowth in severe alopecia areata, but that use is off-label, the regrowth relapsed after stopping, and the drug carries an FDA boxed warning.
What are the key limitations and considerations surrounding tofacitinib in hair loss products and therapies? Reported hair regrowth with tofacitinib comes from alopecia areata, an autoimmune condition — mostly from small, non-randomized studies, with relapse common after stopping. There is no good evidence it helps pattern hair loss, and it is not approved for hair loss anywhere.

Experts

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

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Hairo Fallas