Melanocortin System
Definition
The melanocortin system is a neuroendocrine signaling network comprising melanocortin peptides (alpha-MSH, beta-MSH, gamma-MSH, and ACTH) derived from proopiomelanocortin (POMC) and their five G protein-coupled receptors (MC1R through MC5R). This system regulates diverse physiological processes including skin pigmentation (MC1R), adrenal steroidogenesis (MC2R), energy homeostasis and appetite (MC3R/MC4R), and exocrine gland function (MC5R). Synthetic melanocortin analogs such as melanotan II and bremelanotide (PT-141) target specific melanocortin receptor subtypes and have been studied for their effects on pigmentation and sexual function.
Related Terms
Related Compounds
PT-141
An in-depth review of PT-141 (Bremelanotide), a cyclic melanocortin receptor agonist, covering its mechanism of action, pharmacokinetics, research applications in sexual function, melanocortin pharmacology, CNS-mediated arousal pathways, safety profile, and dosing in research models.
Read monographMelanotan 2
An in-depth review of Melanotan 2, a synthetic cyclic analog of alpha-melanocyte-stimulating hormone, covering its mechanism of action, pharmacokinetics, research applications in melanogenesis, pigmentation, appetite modulation, melanocortin receptor pharmacology, safety profile, and dosing in research models.
Read monographRelated Studies
Bremelanotide for the Treatment of Hypoactive Sexual Desire Disorder: Two Randomized Phase 3 Trials (RECONNECT)
Kingsberg SA, Clayton AH, Portman D, et al. · Obstetrics and Gynecology (2019)
Eumelanin and the photoprotection of skin color: linking experimental studies and clinical outcomes
Dorr RT, Lines R, Levine N, et al. · Journal of the American Academy of Dermatology (1996)