Background & Aim: Occlusion of organs artery results in ischemia and the opening of occluded artery leads to tissue lesion identified as reperfusion injury(RI). Oxygen-derived free radicals seem to be involved in the reperfusion injury. In this experimental study the effects of 5-aminosalicylic acid(5-ASA), a prescribed drug for ulcerative colitis, was assessed. 5-ASA is a potent scavenger ...