Abstract：Objectives: To investigate whether atorvastatin can induce heme oxygenase-l (HO-1) expression in rat kidneys to prevent contrast- induced acute kidney injury(CI-AKI) and its related mechanisms. Methods: 48 healthy Sprague-Dawley male rats were randomly divided into the blank control group, model group , atorvastatin group and zinc protoporphyrin IX(ZnPPIX) group. A rat model of CI-AKI was established by intramuscular injection of gentamicin sulfate for 2 days and then intravascular injection of 76% meglumine diatrizoate. Atorvastatin group and ZnPPIX group were pretreated with atorvastatin/ZnPPIX before using meglumine diatrizoate. We detected changes in serum creatinine (Scr) before and after model establishment, measured the interleukin-6(IL-6), monocyte chemotactic protein 1 (MCP-1),malondialdehyde(MDA) and total antioxidant capacity (T- AOC) as well as the protein expression of HO-1, Bax, Bcl-2 in the renal tissue, and analyzed the renal cell apoptosis index(AI). Results: After contrast agent injection, compared with the control group,the SCr of the other three groups were significantly increased and reached the CI-AKI standard, Meanwhile, the inflammatory and oxidative stress markers and AI were also significantly increased. Compared with the model group, in atorvastatin group, the expression of HO-1 protein in renal tissue increased significantly, while the level of inflammation and oxidative stress and both AI and SCr decreased significantly (P＜0.05),in ZnPPIX group, the expression of HO-1 protein in renal tissue also increased, but the level of inflammation and oxidative stress and both AI and SCr increased significantly(P＜0.05). Conclusion: Atorvastatin can induce expression of HO-1 protein in rat kidney throuh which inhibit the renal inflammation and oxidative stress and cell apoptosis, thereby protecting against CI-AKI.
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2018, Vol. 24 
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