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The melanocyte-stimulating hormones, known collectively as MSH, also known as melanotropins or intermedins, are a family of peptide hormones and neuropeptides consisting of α-melanocyte-stimulating hormone (α-MSH), β-melanocyte-stimulating hormone (β-MSH), and γ-melanocyte-stimulating hormone (γ-MSH) that are produced by cells in the pars intermedia of the anterior lobe of the pituitary ...
stimulates melanocytes to produce melanin: 44 Luteinizing hormone: LH Peptide: anterior pituitary: gonadotropes: LHR → cAMP: In female: ovulation. In male: stimulates Leydig cell production of testosterone. 45 Melanocyte stimulating hormone: MSH or α-MSH Peptide: anterior pituitary/pars intermedia: Melanotroph: melanocortin receptor → cAMP
α-Melanocyte-stimulating hormone (α-MSH) is an endogenous peptide hormone and neuropeptide of the melanocortin family, with a tridecapeptide structure and the amino acid sequence Ac-Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH 2.
They are adrenocorticotropic hormone (ACTH), α-melanocyte stimulating hormone (MSH), β-MSH, and γ-MSH. In addition to agonists which activate melanocortin receptors, there are two antagonists which inhibit receptor activity, agouti and agouti-related protein (AgRP).
In males: Stimulates testosterone synthesis from Leydig cells (interstitial cells) Prolactin: PRL: Lactotrophs: Stimulates milk synthesis and release from mammary glands Mediates sexual gratification: Melanocyte-stimulating hormone: MSH: Melanotropes in the Pars intermedia of the Anterior Pituitary: Stimulates melanin synthesis and release from ...
A melanotroph (or melanotrope) is a cell in the pituitary gland that generates melanocyte-stimulating hormone (α‐MSH) from its precursor pro-opiomelanocortin. Chronic stress can induce the secretion of α‐MSH in melanotrophs and lead to their subsequent degeneration. [1]
Α-Melanocyte-stimulating hormone; Β-Melanocyte-stimulating hormone; Γ-Melanocyte-stimulating hormone; Minigastrin; Luis Moroder; N. N-terminal prohormone of brain ...
β-Melanocyte-stimulating hormone (β-MSH) is an endogenous peptide hormone and neuropeptide. [1] It is a melanocortin, specifically, one of the three types of melanocyte-stimulating hormone (MSH), and is produced from proopiomelanocortin (POMC). [1] It is an agonist of the MC 1, MC 3, MC 4, and MC 5 receptors. [1]