Growth Hormone Operates as a Neuroendocrine Regulator of Human Hair Growth Ex Vivo
January 2019
in “
The journal of investigative dermatology/Journal of investigative dermatology
”
TLDR Growth hormone is important for regulating human hair growth.
The study demonstrated that growth hormone (GH) acted as a neuroendocrine regulator of human hair follicles (HFs) ex vivo, with GH receptor (GHR) expression confirmed in female human scalp HFs, particularly in the outer root sheath (ORS). Treatment with recombinant GH induced premature catagen development, suggesting GH promotes hair follicle regression through increased expression of transforming growth factor-β2 (TGF-β2), despite also up-regulating insulin-like growth factor 1 (IGF-1). The study analyzed 39-44 HFs from three female donors, highlighting the complex role of GH in hair biology and suggesting potential therapeutic targets for hair growth regulation.