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CaN抑制剂对大鼠心肌缺血再灌注损伤保护作用的实验研究 被引量:2

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摘要 目的观察CaN抑制剂FK506对大鼠心肌缺血再灌注(I/R)心律失常和心肌梗死面积的影响,探讨CaN抑制剂在I/R损伤中所起的作用。方法取Wistar大鼠40只,随机分成4组:假手术组,FK506假手术组,I/R损伤模型组,FK506干预组(0.05mg/kg)。观察各组I/R平均动脉压、心率、心律失常、血清心肌酶、心肌梗死面积。结果I/R损伤模型组和FK506干预组平均动脉压分别为(66.50±9.79)mmHg、(80.33±7.37)mmHg,两组与基础平均动脉压〔(84.67±6.80)mmHg〕比较,FK506可以减少缺血期平均动脉压下降,差异具有统计学意义(P<0.05);I/R损伤模型组和FK506干预组室性早搏的总数分别(508±196)次、(227±169)次,室速持续时间分别为(37.5±12.7)s、(8.7±9.8)s,室颤持续时间分别为(16.5±9.6)s、(9.1±9.1)s,两组比较,FK506可减少心律失常发生率,显著缩短心律失常持续时间,降低室颤发生率和死亡率,差异具有统计学意义(P<0.05);I/R组和干预组CK值分别为(3571±601)U/I、(3132±692)U/I,与假手术组(941±449)U/I比较,差异具有统计学意义(P<0.05);两组LDH值分别为(6878±703)U/I、(4851±672)U/I,与假手术组(3283±1097)U/I比较,差异具有统计学意义(P<0.05);I/R组和干预组梗死区占缺血区面积分别为(64.4±9.5)%、(49.8±4.1)%,两组比较,FK506可明显减小缺血再灌注心肌梗死面积,差异具有统计学意义(P<0.01)。结论FK506对大鼠心肌缺血再灌注损伤具有保护作用。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2009年第4期428-430,共3页 Chinese Journal of Gerontology
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共引文献18

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