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Effects of chronic experimental streptozotocin-induced diabetes on the noradrenergic and peptidergic innervation of the rat alimentary tract

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Abstract

Immunohistologic localization of tyrosine hydroxylase (TOH), dopamine-β-hydroxylase (DBH) and selected neuropeptides (vasoactive intestinal polypeptide, gastrin-releasing peptide (GRP)/bombesin, substance P, Leu-enkephalin, Met-enkephalin, dynorphin B, neuropeptide Y (NPY), somatostatin) was used to investigate the innervation of the small bowel in a rat model of diabetic autonomic neuropathy. Paravascular mesenteric nerves (extrinsic) and intramural nerves of chronically (12-18 month) diabetic rats were characterized by the presence of numerous, markedly swollen dystrophic axons which stained intensely for TOH and DBH. The peptidergic complement of axons, however, showed no evidence of comparable dystrophic axonopathy.

Original languageEnglish
Pages (from-to)353-360
Number of pages8
JournalBrain Research
Volume458
Issue number2
DOIs
StatePublished - Aug 23 1988

Keywords

  • Diabetes
  • Neuroaxonal dystrophy
  • Neuropathy
  • Neuropeptide
  • Sympathetic

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