1.After one hour occlusion of superior mesenteric artery in rats and just before releasing the clamp, SOD (superoxide dismutase), CAT(catalase), ALLO(allopurinal), SOD+CAT, SOD+ALLO, SOD+CAT+ALLO were administrated seperately to the animal.
2.Through a midline abdominal incision, the superior mesenteric artery (SMA) was occluded for 60 minutes with an atraumatic vascular clamp and followed by reperfusion for 120 minutes in I/R group and SF group.
