• Ibrahim Berber, Cagatay Aydin, Nural Cevahir, Cigdem Yenisey, Gulistan Gumrukcu, Goksel Kocbil, Gurkan Tellioglu, and Koray Tekin.
• Department of General Surgery, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey.
• Surg. Today. 2009 Jan 1; 39 (5): 407-13.

PurposeWe investigated whether Tempol, a water-soluble antioxidant, prevents the harmful effects of superior mesenteric ischemia/reperfusion on intestinal tissues in rats.MethodsThe rats were divided into three groups of 10. In group 1, the superior mesenteric artery (SMA) was isolated but not occluded, and in groups 2 and 3 the superior mesenteric artery was occluded for 60 min. After that, the clamp was removed and reperfusion began. In group 3, 5 min before the start of reperfusion, a bolus dose of 30 mg/kg Tempol was administered intravenously and continued at a dose of 30 mg/kg for 60 min. All animals were euthanized after 24 h and tissue samples were collected for analysis.ResultsThere was a significant increase in myeloperoxidase activity, malondialdehyde levels, and the incidence of bacterial translocation in group 2, with a decrease in glutathione levels. These parameters were found to be normalized in group 3. The intestinal mucosal injury score in group 2 was significantly higher than those in groups 1 and 3.ConclusionTempol prevents bacterial translocation while precluding the harmful effects of ischemia/reperfusion injury on intestinal tissues in a rat model of superior mesenteric artery occlusion.

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