Oxygen free radical-induced histamine release during intestinal ischemia and reperfusion

Eur Surg Res. 1989;21(6):297-304. doi: 10.1159/000129042.

Abstract

Acute mesenteric ischemia is highly lethal and therefore a serious problem for surgery and intensive care medicine; accordingly its pathophysiology warrants further study. Oxygen free radicals (OFR) play a role in the intestinal mucosal damage that develops during reperfusion after ischemia. Histamine (H) is generally released in various types of tissue ischemia. The link between H release and OFR has only been studied in in vitro systems. We tested the hypothesis that OFR may be involved in H release following reperfusion of the ischemic gut. The artery supplying a segment of the ileum was occluded for 1 or 2 h in anesthetized dogs. On reperfusion, a release of H into the venous effluent of the segment was demonstrated. Pretreatment of the animals with allopurinol (an inhibitor of xanthine oxidase), or with MTDQ-DA [6,6'-methylene-bis(2,2-dimethyl-4-methanesulfonic acid sodium-1,2-dihydroquinoline)], a superoxide anion scavenger, or with a combination of allopurinol and MTDQ-DA resulted in an inhibition of H release. We conclude that OFR may play a role in the local H release following intestinal ischemia.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Allopurinol / pharmacology
  • Animals
  • Antioxidants / pharmacology
  • Dogs
  • Female
  • Free Radicals
  • Histamine / blood
  • Histamine Release / drug effects*
  • Ileum / blood supply*
  • Ischemia / metabolism*
  • Male
  • Mesenteric Vascular Occlusion / metabolism
  • Oxygen / metabolism
  • Quinolines / pharmacology
  • Reperfusion Injury / metabolism*

Substances

  • Antioxidants
  • Free Radicals
  • Quinolines
  • Allopurinol
  • Histamine
  • 6,6'-methylenebis(2,2-dimethyl-4-methanesulfonic acid-1,2-dihydroquinoline)
  • Oxygen