Remote ischemic postconditioning protects myocardium by inhibiting the expression of RAGE
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    Abstract:

    Objective:This study aimed to investigate the role of receptor for advanced glycation end products(RAGE)in improving myocardial ischemia and reperfusion after remote ischemic postconditioning. Methods:Thirty-four C57/B6 mice aged 8-9 weeks were randomly divided into six groups:the sham operation group(sham),the FPS-ZM1 control group(FZM1),the ischemia and resperfusion group(IR),the FPS-ZM1 intervention group(FZM1+IR),the RIPostC group(RIPostC+IR)and the RIPostC intervention group(RIPostC+FZM1+IR). The anterior descending coronary artery was ligated to create myocardial ischemia-reperfusion model of mouse. The left ventricular ejection fraction(LVEF)and left ventricular shortening fraction(LVFS)of mice were detected by mouse cardiac ultrasonography,and the inflammatory factor IL-6,NF-κB P65 protein and RAGE protein were detected by enzyme-linked immunoassay(ELISA)and Western blotting. Results:①RIPostC significantly increased LVEF(P < 0.01)and LVFS(P < 0.01)compared with the I/R group. ②Compared with the IR group,RIPostC significantly reduced the expression of RAGE(P < 0.001). ③RIPostC significantly reduced the expression of NF-κB P65(P < 0.001)and IL-6(P < 0.001)compared with the I/R group. Conclusion:RIPostC was effective in protecting against myocardial ischemia-reperfusion injury. The cardioprotective effects of RIPostC may be achieved directly by inhibiting the expression of RAGE and thereby reducing the inflammatory response.

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冯楚炎,王向明,屠甜甜,Deeraj Mungun,许婷婷,徐婉莹,郭 妍.远端缺血后适应通过抑制RAGE的表达实现对心肌的保护作用[J].南京医科大学学报(自然科学版英文版),2019,(4):500-504.

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History
  • Received:October 17,2018
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  • Online: May 07,2019
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