title: Proportions of mono- and diacetylated forms of alpha MSH in individual neurointermediate lobe extracts of Cyprinus carpio L.
abstract: The proportions of the mono- and diacetylated forms of alpha MSH in individual carp neurointermediate lobe (NIL) extracts, as assessed by HPLC and RIA, fluctuate within a narrow range (mono/mono- + diacetyl alpha MSH = 3-14%). These results obtained on individuals of different sex and age show that the diacetylated form predominates in the NIL of all individuals where it represents in the mean 90% of the acetylated forms. The relatively low fluctuation of the proportions of the acetylated forms suggests that the possibility for a physiological modulation of the diacetylation step may be limited in this species of fish.
mesh_terms: D000107:Acetylation; D000818:Animals; D002347:Carps; D002851:Chromatography, High Pressure Liquid; D005260:Female; D008297:Male; D009074:Melanocyte-Stimulating Hormones / Q000302:isolation & purification*; D010902:Pituitary Gland / Q000032:analysis*
chemical_list: D009074:Melanocyte-Stimulating Hormones