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GlossaryTropomyosin receptor kinase A (TrkA)

receptor protein involved in nerve growth and hair follicle health

Tropomyosin receptor kinase A (TrkA) is a protein that plays a crucial role in the development and function of the nervous system. It is a receptor for nerve growth factor (NGF), which is essential for the survival, growth, and maintenance of certain types of neurons. TrkA is also involved in pain perception and can influence hair growth by affecting the health of hair follicles.

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New Effects of Caffeine on Corticotropin-Releasing Hormone (CRH)-Induced Stress Along the Intrafollicular Classical Hypothalamic-Pituitary-Adrenal (HPA) Axis (CRH-R1/2, IP3-R, ACTH, MC-R2) and the Neurogenic Non-HPA Axis (Substance P, p75NTR and TrkA) in Ex Vivo Human Male Androgenetic Scalp Hair Follicles

research New Effects of Caffeine on Corticotropin-Releasing Hormone (CRH)-Induced Stress Along the Intrafollicular Classical Hypothalamic-Pituitary-Adrenal (HPA) Axis (CRH-R1/2, IP3-R, ACTH, MC-R2) and the Neurogenic Non-HPA Axis (Substance P, p75NTR and TrkA) in Ex Vivo Human Male Androgenetic Scalp Hair Follicles

12 citations, April 2020 in “British Journal of Dermatology”

Caffeine may help reduce stress-induced hair loss.

Optogenetically Controlled TrkA Activity Improves the Regenerative Capacity of Hair-Follicle-Derived Stem Cells to Differentiate into Neurons and Glia

research Optogenetically Controlled TrkA Activity Improves the Regenerative Capacity of Hair-Follicle-Derived Stem Cells to Differentiate into Neurons and Glia

6 citations, September 2020 in “Advanced Biology”

Blue-light activation of TrkA improves hair-follicle stem cells' ability to become neurons and glial cells.

Effects of the Selective TrkA Agonist Gambogic Amide on Pigmentation and Growth of Human Hair Follicles In Vitro

research Effects of the Selective TrkA Agonist Gambogic Amide on Pigmentation and Growth of Human Hair Follicles In Vitro

6 citations, August 2019 in “PLOS ONE”

Gambogic Amide helps maintain hair color and promotes hair growth.

Probing the Effects of Stress Mediators on the Human Hair Follicle

research Probing the Effects of Stress Mediators on the Human Hair Follicle

159 citations, December 2007 in “American Journal of Pathology”

Stress-related substance P may lead to hair loss and negatively affect hair growth.

research Psychological Stress-Induced Pathogenesis of Alopecia Areata: Autoimmune and Apoptotic Pathways

3 citations, July 2023 in “International journal of molecular sciences”

Stress may contribute to hair loss in alopecia areata by affecting immune responses and cell death in hair follicles.

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