Effect of ischemia preconditioning on renal ischemia/ reperfusion injury in rats

Abstract

Objective: To study the effect of ischemia preconditioning (IP) on renal ischemia/rep er-fusion (I/R)-associated functional injury and expression of renal adhesion molecules in rats. Materials and Methods: The ischemia preconditioning plan adopted in this experiment involved renal warm ischemia for 6 min. and blood flow for 4 min., repeated four times. The Wistar rat kidneys used for warm ischemia preconditioning were subjected to 60 min of renal warm ischemia followed by reperfusion. The rat kidneys with ischemia/ reperfusion were compared with the ischemia preconditioning group to observe rat renal function and changes in the expression of renal adhesion molecules ICAM-1, P--Selectin, and E-Selectin. Results: The expression of rat renal adhesion molecules (ICAM-1, P-Selectin, and E-Se-lectin) with ischemia preconditioning was significantly lower than that of the ischemia/ reperfusion group. Serum creatinine was significantly lower than that in the ischemia/ reperfusion group after 48 hours. Conclusions: Ischemia preconditioning has a protective effect on renal function. Reduced expression of renal adhesion molecules is likely a mechanism involved in the observed protection.