羟氯喹对心肌梗死后心室重塑的影响

目的：探讨羟氯喹对心肌梗死后心室重塑的影响.方法：按Maisel方法建立心肌梗死与假手术模型,将术后3d仍存活的SD大鼠按不同干预条件再分为心肌梗死羟氯喹组（n=11,A组）,心肌梗死安慰剂组（n=15,B组）,假手术羟氯喹组（n=7,C组）,假手术安慰剂组（n=7,D组）.计算术后3～87d各组死亡率.多普勒超声仪测定心脏结构指标舒张末期室间隔厚度（IVSd）,舒张末期左室后壁厚度（LVPWd）,左室舒张末期内径（LVDd）和功能指标短轴缩短率（FS）,射血分数（EF）.WesternBlot测定心肌梗死周边组织P-Akt,P53蛋白表达.结果：A,B,C,D各组死亡率分别为9%,40%,0%,0%.B组IVSd,LVPWd先变厚尔后逐渐变薄,LVDd逐渐变大,FS,EF逐渐下降;A组IVSd,LVPWd逐渐变厚,LVDd无明显变化,FS,EF逐渐升高.术后87d,A组与B组IVSd分别为（0.11±0.01）,（0.12±0.01）cm;LVPWd分别为（0.15±0.01）,（0.13±0.01）cm;LVDd分别为（0.64±0.01）,（0.72±0.01）cm;FS分别为（29.44±2.13）%,（20.39±1.83）%;EF分别为（62.23±2.33）%,（47.99±1.89）%;P-Akt蛋白IOD分别为（1.12±0.21）,（0.58±0.18）（P均〈0.05）,而2组间P53蛋白IOD差异无统计学意义.C组与D组IVSd分别为（0.13±0.01）,（0.12±0.01）cm;LVPWd分别为（0.15±0.01）,（0.14±0.01）cm（P均〈0.05）;LVDd分别为（0.60±0.01）,（0.57±0.01）cm;FS分别为（34.33±2.13）%,（35.57±1.78）%;EF分别为（69.82±2.91）%,（71.15±2.11）%;P-Akt蛋白IOD分别为（0.78±0.20）,（0.62±0.23）;P53蛋白IOD分别为（0.49±0.22）,（0.32±0.19）.结论：羟氯喹可通过调控心肌Akt蛋白表达及活性,明显改善心肌梗死后心室重塑.

Effect of hydroxychloroquine on ventricular remodeling after myocardial infarction in rats

AIM:To investigate the effect of hydroxychloroquine on ventricular remodeling after myocardial infarction (MI)in rats. METHODS: MI and sham-operation were established by Maisel's method. Three days after operation, surviving Sprague-Dawley (SD)rats were divided into MI hydroxychloroquine group (n=11, group A), MI placebo group (n=15, group B), sham-operation hydroxychloroquine group (n=7, group C)and sham-operation placebo group (n=7,group D), which were treated with hydroxychloroquine and physiological sal...