Protective Effect of Probucol on Rats with Renal Ischemia-reperfusion Injury and the Mechanism / 华中科技大学学报(医学版)

ABSTRACT

Objective The aim of the study was to investigate the protective effect of probucol on oxidative stress injury in rats with ischemia-reperfusion injury(IRI)and its mechanism. Methods Thirty male Sprague-Dawley rats were randomly di-vided into sham operation group(S group),ischemia-reperfusion group(IR group),and probucol treatment group(probucol+IR group,P+IR group).Rats in the S and IR groups were fed with warm water every day,and rats in P+IR group were treated with probucol.After 1 week,rat model of renal ischemia and reperfusion was established.Right kidneys of the rats were re-moved.In IR and P+ IR groups,the left renal artery was clamped with a non-invasive artery clamp,and after 30 minutes the blood vessels restored patency by loosening the clamp.After reperfusion,the S and IR groups were perfused with warm water every day,and the P+IR group was treated with probucol for 1 week.After 1 week,all the rats were sacrificed and the blood and kidney tissue specimens were taken.The blood biochemical indexes of the rats were measured,and the pathological changes of the kidneys were observed.Results The levels of blood urea nitrogen(BUN),serum creatinine(SCr)and blood lipids in P+ IR group were significantly lower than those in IR group(all P<0.05);in P+IR group,the level of superoxide dismutase(SOD)in serum and renal tissue was increased significantly(all P<0.05),meanwhile,the levels of malondialdehyde(MDA)were significantly decreased (P<0.05).In P+IR group,the pathological damage of kidney tissue was reduced,and renal index was significantly improved(P<0.05).Conclusion Probucol can increase the activity of SOD in blood and kidney of rats with IRI,improve renal function,reduce the level of blood lipids,reduce the pathological injury of renal tissue,and play a role in renal protection.