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- W2591703600 abstract "Remote ischemic preconditioning (RIPC) induces a prolonged late phase of multi-organ protection against ischemia-reperfusion (IR) injury. In the present study, we tested the hypothesis that RIPC confers late protection against myocardial IR injury by upregulating expression of IL-10. Mice were exposed to lower limb RIPC or sham leg ischemia. After 24 h, mice with RIPC demonstrated decreased myocardial infarct size and improved cardiac contractility following 30-min ischemia and 120-min reperfusion (I-30/R-120), accompanied by increased phosphorylation of Akt and eNOS in the heart. These effects of RIPC were completely blocked by anti-IL-10 receptor antibodies. Moreover, in IL-10 KO mice, RIPC was no longer able to provide cardioprotection against IR injury. IL-10 receptors were expressed in cardiomyocytes under basal conditions. Stimulation with exogenous IL-10 increased Akt phosphorylation and decreased myocardial infarct size after I-30/R-120 in isolated perfused hearts. Wildtype mice with RIPC demonstrated increased plasma IL-10 levels, while in the preconditioned gastrocnemius muscle, the phosphatase PTEN was inactivated and expression of IL-10 was increased through Stat3. Myocyte-specific PTEN inactivation led to increased Stat3 phosphorylation and IL-10 protein expression in the gastrocnemius muscle. Taken together, these results suggest that RIPC induces late protection against myocardial IR injury by increasing expression of IL-10 in the remote muscle, followed by release of IL-10 into the circulation, and activation of protective signaling pathways in the heart. This study provides a scientific basis for the use of RIPC to confer systemic protection against IR injury." @default.
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- W2591703600 date "2012-08-03" @default.
- W2591703600 modified "2023-09-22" @default.
- W2591703600 title "Abstract 15: Remote Ischemic Preconditioning Confers Late Protection Against Myocardial Ischemia-Reperfusion Injury in Mice by Upregulating Interleukin-10" @default.
- W2591703600 doi "https://doi.org/10.1161/res.111.suppl_1.a15" @default.
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