62 citations
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December 1966 in “Endocrinology” This study observed that injecting mice with α-MSH resulted in black hair regrowth in shaved and plucked areas, suggesting a potential link to the agent darkening hair in animals with a specific pituitary tumor.
9 citations
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January 2005 in “Experimental Dermatology” This study found that human hair follicles can function like a peripheral hypothalamic-pituitary-adrenal axis, synthesizing cortisol in response to corticotropin-releasing hormone and adrenocorticotropic hormone stimulation.
5 citations
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May 2017 in “Journal of the European Academy of Dermatology and Venereology” In this study, plasma levels of MSH and cortisol in patients with alopecia areata did not show significant changes compared to healthy controls.
489 citations
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June 2005 in “The FASEB Journal” This study found that human scalp hair follicles can respond to corticotropin releasing hormone stimulation similarly to the classical HPA axis, including up-regulating cortisol production and activating neuroendocrine feedback loops.
46 citations
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November 1997 in “Journal of Neural Transmission” Seborrhea in Parkinson's disease may be linked to hormones, not autonomic impairment.