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  • Title: alpha-Melanotropin, beta-endorphin and adrenocorticotropin-like immunoreactivities are colocalized within duodenal myenteric plexus perikarya.
    Author: Wolter HJ.
    Journal: Brain Res; 1985 Jan 28; 325(1-2):290-3. PubMed ID: 2983829.
    Abstract:
    The opioid peptide beta-endorphin co-exists with alpha-melanotropin and adrenocorticotropin within myenteric neuronal cell bodies of the rat duodenum. Adjacent serial sections through the myenteric and submucous plexus have been stained alternately with antisera directed against alpha-melanotropin, beta-endorphin and adrenocorticotropin. This resulted in nearly superimposable immunofluorescences for the 3 peptides within neuronal cell bodies of the myenteric plexus. An alpha-melanotropin staining was always linked by an immunofluorescence for beta-endorphin, adrenocorticotropin and vice versa. These staining patterns were not seen in the submucous plexus. Some tangentially cut nerve fibers running through the longitudinal muscle layer revealed a coexistence of adrenocorticotropin and alpha-melanotropin. The colocalization of beta-endorphin, alpha-melanotropin and adrenocorticotropin within the same perikarya may reflect a physiological role for the 3 peptides in the nervous system of the rat duodenum.
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