, Volume 27, Issue 8, pp 857-862
Date: 28 Nov 2010

Ischemic preconditioning and remote ischemic preconditioning have protective effect against cold ischemia–reperfusion injury of rat small intestine

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Abstract

Purpose

To investigate the protective effect of ischemic preconditioning (IPC) and remote ischemic preconditioning (RIPC) against cold ischemia–reperfusion injury (IRI) associated with small bowel transplantation (SBT).

Methods

Male Lewis rats weighing 200–300 g were used for this study. The rats were assigned to three groups: control, ischemic preconditioning (IPC), or remote ischemic preconditioning (RIPC). Heterotopic SBT was thereafter performed. The recipient rats were killed 3, 6, 12 and 24 h after transplantation. Specimens from the intestine were histologically scored according to a grading system (Park et al.). Serum lactate dehydrogenase (LDH), aspirate aminotransferase (AST), alanine aminotransferase (ALT) were examined and heme oxygenase-1 (HO-1) were analyzed by ELISA where HO-1 served as an indicator of protection against IRI.

Results

The values of tissue injury were significantly lower in the IPC and RIPC groups than in control group at 3 h after SBT. The serum LDH, AST and ALT levels also significantly decreased in the IPC and RIPC groups at 3 h after SBT, but these protective effects against cold IRI diminished by 12 and 24 h after SBT. The serum HO-1 level significantly increased in the IPC and RIPC groups 3 h after SBT.

Conclusion

Both IPC and RIPC were found to ameliorate ischemia–reperfusion injury after rat SBT in the early phase. HO-1 may therefore play a protective role against cold IRI.