The cardioprotective effect of necrostatin requires the cyclophilin-d component of the mitochondrial permeability transition pore

被引：144
作者：
Lim, S. Y. [1 ]
Davidson, S. M. [1 ]
Mocanu, M. M. [1 ]
Yellon, D. M. [1 ]
Smith, C. C. T. [1 ]
机构：
[1] UCL Hosp, Sch Med, Hatter Cardiovasc Inst, London WC1E 6HX, England
来源：
CARDIOVASCULAR DRUGS AND THERAPY | 2007年 / 21卷 / 06期
基金：
英国惠康基金;
关键词：
necrostatin; mitochondrial permeability transition pore; cyclophilin-D;
D O I：
10.1007/s10557-007-6067-6
中图分类号：
R5 [内科学];
学科分类号：
1002 ; 100201 ;
摘要：
Background Necrostatin (Nec-1) protects against ischemia-reperfusion (IR) injury in both brain and heart. We have previously reported in this journal that necrostatin can delay opening of the mitochondrial permeability transition pore (MPTP) in isolated cardiomyocytes. Aim The aim of the present study was to investigate in more detail the role played by the MPTP in necrostatin-mediated cardioprotection employing mice lacking a key component of the MPTP, namely cyclophilin-D. Method Anaesthetized wild type (WT) and cyclophilin-D knockout (Cyp-D-/-) mice underwent an open-chest procedure involving 30 min of myocardial ischemia and 2 h of reperfusion, with subsequent infarct size assessed by triphenyltetrazolium staining. Nec-1, given at reperfusion, significantly limited infarct size in WT mice (17.7 +/- 3% vs. 54.3 +/- 3%, P < Ce0.05) but not in Cyp-D-/- mice (28.3 +/- 7% vs. 30.8 +/- 6%, P > 0.05). Conclusion The data obtained in Cyp-D-/- mice provide further evidence that Nec-1 protects against myocardial IR injury by modulating MPTP opening at reperfusion.
引用
收藏
页码：467 / 469
页数：3
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