Objective To evaluate the effects of non-wounded leg ischemic post-conditioning on the serum TNF-α and NO level of rats undergoing pancreas transplantation. Methods Group Sham consisted of 6 normal SD rats. 12 diabetic SD rats were randomly assigned to 2 groups: I/R group consisted of 6 diabetic rats which received ischemia reperfusion and NWLIPO group consisted of 6 diabetic rats which received ischemic post-conditioning. Blood glucose was measured before and after reperfusion. The level of serum NO and TNF-α was monitored 2 hours after long-time reperfusion. Results The level of blood glucose and TNF-α in NWLIPO group was lower than that in I/R group (P＜0. 01) while the level of NO was higher in NWLIPO group than in I/R group (P＜0.01). Conclusion Non-wounded leg ischemic post-conditioning can increase serum NO synthesis and down-regulate TNF-α.

Objective:To investigate the expression and function of RIP3 in the liver of rats following ischemic postconditioning.Methods:The model of 70％ hepatic ischemia and reperfusion was established,then a total of forty healthy adult male Sprague-Dawley(SD) rats were divided randomly into four groups,ten rats in each group:a sham-operation group (Sham group);an ischemia reperfusion injury group(IR group);an ischemic postconditioning group(IPO group);an ischemic postconditioning and necrostatin-1 group (Nec-1 group).The blood samples and liver tissues were collected.The serum levels of ALT and AST were detected,and the liver histological examination was performed.Western-bolt was used to detect the TNF-α and RIP3 levels.Results:Compared with the IR group,ALT and AST in serum were significantly declined in the IPO group (P＜0.05);The liver damage after ischemia and reperfusion was improved obviously in the IPO group compared to which in the IR group;The Suzuki's scores was increased in the IR group compared to which in the IPO group (P＜0.05);There was a low grade of TNF-α and RIP3 in the Sham group,whereas the level of TNF-α and RIP3 significantly increased in the IR and IPO and Nec-1 group(P＜0.05);Compared with the IR group,the level of RIP3 was further decreased in the IPO group (P＜0.05);Compared with the IPO group,the level of RIP3 was further decreased in the Nec-1 group (P＜0.05).Conclusion:RIP3-mediated necroptosis was involved during hepatic ischemia postconditioning,and the protective effect of ischemia postconditioning may act as reducing necroptosis by cutting down the levels of RIP3.