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Immunohistochemical Localization of Neuropeptides in Bovine Pancreas
Author(s) -
Myojin T.,
Kitamura N.,
Hondo E.,
Baltazar E. T.,
Pearson G. T.,
Yamada J.
Publication year - 2000
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1046/j.1439-0264.2000.00257.x
Subject(s) - galanin , vasoactive intestinal peptide , neuropeptide , medicine , endocrinology , pancreas , enteroendocrine cell , neuropeptide y receptor , calcitonin , calcitonin gene related peptide , immunohistochemistry , endocrine system , substance p , pancreatic polypeptide , biology , enkephalin , glucagon , hormone , receptor , opioid
Summary The occurrence and density of distribution of nerves and endocrine cells that are immunoreactive for neuropeptides in the bovine pancreas were studied by immunohistochemistry. The six neuropeptides localized were galanin (GAL), substance P (SP), methionine‐enkephalin (MENK), neuropeptide Y (NPY), calcitonin gene‐related peptide (CGRP) and vasoactive intestinal polypeptide (VIP). The exocrine pancreas was shown to have an appreciable number of GAL‐ and SP‐immunoreactive nerve fibres but few fibres showing immunoreactivity for VIP and CGRP. Numerous MENK‐, GAL‐, SP‐, and NPY‐immunoreactive nerve fibres were seen in the endocrine portion of the pancreas. Nerve cell bodies in the intrapancreatic ganglia showed immunoreactivity for all of the neuropeptides except CGRP. Endocrine cells showing immunoreactivity for GAL and SP were observed in the large islets and islets of Langerhans, respectively. The present results indicate a characteristic distribution of neuropeptides in the bovine pancreas, which may regulate both exocrine and endocrine secretions of pancreas.