Sevoflurane Preconditioning Attenuates Myocardial Ischemia/Reperfusion Injury via Caveolin-3-Dependent Cyclooxygenase-2 Inhibition

Article; Proceedings Paper

关键词: CARDIAC PROTECTION;    IN-VIVO;    CARDIOPROTECTION;    ADIPONECTIN;    ANESTHESIA;    INFARCTION;    CAVEOLAE;    HEART;    MODEL;   

DOI  :  10.1161/CIRCULATIONAHA.112.000045

来源: SCIE

【 摘 要 】

Background-The inhaled anesthetic sevoflurane has been demonstrated to protect against myocardial ischemia/reperfusion (MI/R) injury via mechanisms involving AMP-activated protein kinase (AMPK) and caveolin-3 (Cav-3). However, the relative contributions of AMPK and Cav-3 to sevoflurane preconditioning (SF-PreCon)-mediated cardioprotection and their precise underlying mechanisms of action remain incompletely understood. Methods and Results-SF-PreCon (consisting of 3 cycles of 15-minute exposure to 2% sevoflurane before 30 minutes of MI) decreased MI/R injury in wild-type mice (caspase-3 activity, -29.1%; infarct size, -20.2%; and left ventricular end diastolic pressure, -33.8%). In cardiac-specific AMPK alpha 2 dominant-negative overexpressing mice, the cardioprotective effect of SF-PreCon was largely retained (caspase-3 activity, -26.7%; infarct size, -16.7%; and left ventricular end-diastolic pressure, -25.9%; P<0.01). In contrast, SF-PreCon failed to significantly protect Cav-3 knockout mice against MI/R injury (P>0.05). SF-PreCon significantly decreased MI/R-induced superoxide generation in wild-type (-43.6%) and AMPK dominant-negative overexpressing mice (-35.5%; P<0.01) but not in Cav-3 knockout mice. SF-PreCon did not affect nicotinamide adenine dinucleotide phosphate oxidase expression but significantly inhibited cyclooxygenase-2 expression in wild-type (-38.7%) and AMPK dominant-negative overexpressing mice (-35.8%) but not in Cav-3 knockout mice. Conclusions-We demonstrate for the first time SF-PreCon mediates cardioprotection against MI/R injury via caveolin-3-dependent cyclooxygenase-2 inhibition and antioxidative effects.

【 授权许可】

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