Oxidative Stress and Ischemia-Reperfusion Injury in Gastrointestinal Tract and Antioxidant, Protective Agents

J Clin Biochem Nutr. 2007 Jan;40(1):1-12. doi: 10.3164/jcbn.40.1.


Exacerbation of hypoxic injury after reoxygenation is a crucial mechanism mediating organ injury in transplantation, and in myocardial, hepatic, gastrointestinal, cerebral, renal, and other ischemic syndromes. The occlusion and reperfusion of the splanchnic artery is a useful animal model to elucidate the mechanism of gastrointestinal injury induced by ischemia-reperfusion (I/R). Although xanthine oxidase is a major source of reactive oxygen species (ROS), which plays an important role in the I/R-induced intestinal injury, there are many other sources of intracellular ROS. Various treatment modalities have been successfully applied to attenuate the I/R injury in animal models. This review focuses on the role of oxidant stress in the mechanism of I/R injury and the use of antioxidant agents for its treatment.

Keywords: antioxidant; ischemia-reperfusion; oxidant stress.