Presence of alpha-melanocyte-stimulating hormone in bovine pituitary intraglandular colloid of intermediate lobe origin.
Alpha-melanocyte-stimulating hormone (alpha-MSH), one of several peptide hormones originating in the intermediate lobe of the pituitary as proopiomelanocortin, was discovered in bovine pituitary intraglandular colloid by using radioimmunoassay. The quantity of alpha-MSH varied from 5 to 368 micrograms/mg protein in the three pools. The importance of this finding is discussed in light of the possibility that the colloid is a transport medium for alpha-MSH and other intermediate lobe hormones.
D000818:Animals; D002417:Cattle; D005260:Female; D008297:Male; D009074:Melanocyte-Stimulating Hormones / Q000032:analysis*; D010902:Pituitary Gland / Q000032:analysis*; D011506:Proteins / Q000032:analysis; D011863:Radioimmunoassay
D011506:Proteins; D009074:Melanocyte-Stimulating Hormones