Medical Definition of Melanotropin

1. A polypeptide hormone secreted by the intermediate lobe of the hypophysis in humans (in neurohypophysis in certain other species) which causes dispersion of melanin by melanophores, resulting in darkening of the skin, presumably by promoting melanin synthesis; this effect is readily demonstated in some lower vertebrates, such as frogs and fish; alpha-melanotropin is an N-acetylated peptide with 13 amino acids; beta-melanotropin has 22 amino acids. Synonym: intermedin, melanocyte-stimulating hormone, melanophore-expanding principle. (05 Mar 2000)

Lexicographical Neighbors of Melanotropin

melanostatin
melanostibite
melanotekite
melanothallite
melanotic
melanotic carcinoma
melanotic freckle
melanotic neuroectodermal tumour of infancy
melanotic pigment
melanotic progonoma
melanotic whitlow
melanotonin
melanotrichous
melanotroph
melanotropin (current term)
melanotropin-releasing factor
melanotropin-releasing hormone
melanotropin release-inhibiting hormone
melanotype
melanotypes
melanous
melanovanadite
melanterite
melanterites
melanure
melanurenic acid
melanuria
melanuric
melanuric acid

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