• Nihon Shokakibyo Gakkai Zasshi · Jan 1990

    [Role of free radicals and lipid peroxidation in gastric mucosal injury induced by ischemia-reperfusion in rats].

    • T Yoshikawa, S Ueda, S Takahashi, Y Naito, H Oyamada, Y Morita, T Tanigawa, T Takemura, S Sugino, and M Kondo.
    • First Department of Medicine, Kyoto Prefectural University of Medicine.
    • Nihon Shokakibyo Gakkai Zasshi. 1990 Jan 1; 87 (1): 8-15.

    AbstractIschemia and reperfusion is of the greatest importance in the pathology of various diseases. This study was designed to investigate the role of oxygen-derived free radicals and lipid peroxidation in gastric mucosal injury induced by ischemia-reperfusion in rats. Clamping of the celiac artery in rats reduced the gastric mucosal blood flow to 10% of that measured before the clamping. Gastric mucosal injury, such as spotty and linear hemorrhagic erosions, was seen in rats 60 min of the reperfusion following 30 min of ischemia. Thiobarbituric acid (TBA) reactants in the gastric mucosa were increased after the reperfusion. The increase in gastric mucosal lesions and TBA reactants were significantly inhibited by the treatment with SOD+ catalase and allopurinol. These results suggest that oxygen-derived free radicals and lipid peroxidation may play an important role in the pathogenesis of acute gastric mucosal lesions induced by ischemia-reperfusion.

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