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  • Title: [The protective effects of ischemic preconditioning on the kidney injury following with ischemia/reperfusion of limbs and the possible mechanisms].
    Author: Wang YL, Zhao CX, Jing YL, Zheng HP, Cui GJ, Zhang SS.
    Journal: Zhongguo Ying Yong Sheng Li Xue Za Zhi; 2009 Nov; 25(4):492-5. PubMed ID: 21158041.
    Abstract:
    AIM: To explore the protective effects of ischemic preconditioning on the kidney injury following with ischemia/reperfusion (I/R) of limbs. METHODS: The models of I/R injury of limbs were constructed in rabbits. The blood from right external jugular vein, renal artery and renal vein represent the peripheral blood, into and out-flowing kidney blood (IKB, OKB) respectively. Superoxide dismutase (SOD), malondialdehyde (MDA), blood uria nitrogen (BUN) in peripheral blood and SOD, MDA, nitric oxide (NO) in IKB and OKB were measured, as well as SOD, MDA, induced nitric oxide synthase (iNOS) in kidney were detected in different groups. The effects of ischemic preconditioning (IPC) on the kidney injury were observed. RESULTS: Compared with control group, the activity of SOD in peripheral blood, IKB, OKB and kidney decreased, and the content of MDA increased after 4 h ischemia followed by 4 h reperfusion. The content of BUN in peripheral blood, NO in IKB, OKB and iNOS in kidney increased remarkably as well. SOD increased and MDA, NO, BUN, iNOS decreased significantly by ischemic preconditioning (IPC) before ischemia/reperfusion. The correlation analysis indicated that MDA was negatively correlated with SOD and positively correlated with NO, BUN. CONCLUSION: Oxygen free radicals metabolic confusion of kidney occurred in the course of I/R of limbs, IPC could strengthen the resistance of peroxidation in kidney and had protective effects on the kidney injury following with ischemia/reperfusion (I/ R) of limbs
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