![]() The data suggest that pro-opiomelanocortin is expressed in the adrenal medulla of humans but is not detectable in the adrenal glands of many other mammalian species.ĪAAS, founded in 1848, has evolved into the world's largest multidisciplinary scientific society with nearly 130,000 members and subscribers. ![]() The α-melanotropin-like immunoreactivity cochromatographed on gel filtration and reverse-phase high-performance liquid chromatography with desacetyl α-melanotropin. Analysis of the β-endorphin like immunoreactivity using region specific radioimmunoassays interfacing with gel filtration and reverse-phase high-performance liquid chromatography showed the majority of the β-endorphin-like material to exist as nonacetylated β-endorphin-(1-31) with a small percentage of lipotropin-sized molecules. No $\alpha $-melanotorpin, $\beta $-endorphin, or adrenocorticotropic hormone could be found in adrenal extracts from several other mammalian species. Distribution studies showed the presence of pro-opiomelanocortin fragments in the adrenal medulla. ![]() Lower quantities of immunoreactive adrenocorticotropic hormone could also be detected. ![]() Extracts from adult human adrenals contained high concentrations of immunoreactive β-endorphin and α-melanotropin. ![]()
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