November 2022 in “Journal of Investigative Dermatology” This study found that human scalp hair follicles produce neurohormones and responded to GHRH stimulation by prolonging hair growth, suggesting a functional peripheral HPS neuroendocrine signaling axis in the skin.
72 citations
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October 2009 in “The FASEB journal” This study found that thyrotropin-releasing hormone (TRH) acts as a potent stimulator of hair growth in human scalp hair follicles, promoting elongation and prolonging the anagen phase.
284 citations
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May 2002 in “Proceedings of the National Academy of Sciences” In vitro, this study suggests that CRH may act as an autocrine hormone in human sebocytes, influencing lipid synthesis and potentially impacting skin disorders related to alterations in sebaceous lipid formation.
10 citations
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February 2013 in “British Journal of Dermatology” This study found that TRH modulates specific keratins in human scalp tissue, suggesting its potential influence on hair growth and the need for further exploration of neuroendocrine controls in keratin expression.
April 2025 in “Annals of Medicine” This study suggests that the key mechanism of stress-related hair loss involves CRH-induced PTEN loss, which reduces autophagy and increases apoptosis in dermal papilla cells, highlighting potential therapeutic targets like PTEN activation or autophagy enhancement.