注射用三磷酸腺苷辅酶胰岛素对心肌梗死动物心功能改善作用的实验研究

Experimental study on the effect of adenosine disodium triphosphate on myocardial infarction rats

目的研究注射用三磷酸腺苷辅酶胰岛素(ADT)对心肌梗死大鼠心功能的改善作用。方法结扎大鼠冠状动脉左前降支,造成急性心肌梗死模型,造模成功大鼠按心肌缺血程度随机分组,分别给予0.9%NaCl、ADT 1,2,4mg·(kg·d)-1以及依那普利10 mg·(kg·d)-1,另设8只大鼠作为假手术,给予0.9%NaCl。连续给药30 d,通过彩色多普勒超声心动图、血流动力学、心脏重量、肺水含量以及Ⅰ、Ⅲ型胶原的测定,研究ADT对实验大鼠的左心室功能、左心室构型、心肌肥厚程度、肺水肿、心肌梗死范围和心肌重塑等改善作用。结果与模型组比较,ADT可以改善心肌梗死大鼠的左心室功能,明显提高左心室的射血分数,降低左室舒张末压,缩小左心室腔体积,降低肺水含量,减少心肌梗死的范围,抑制心室重塑等。结论 ADT能改善心肌梗死大鼠的心功能。

Objective To investigate the effect of adenosine disodium triphosphate（ADT） on myocardial infarction in rats.Methods The a-cute myocardial infarction rat model was induced by ligation of the left anterior descending coronary artery.The model rats were divided into five groups randomly：model group, ADT 1, 2, 4 mg· （kg· d） -1 and enal-aprilat 10 mg· （ kg· d） -1 , and the other 8 rats received sham surgery.The effect of ADT on myocardial infarction rats included left ventricular of configuration , the degree of myocardial hypertrophy and pulmonary ede-ma, scope of myocardial infarction and myocardial remodeling were deter-mined by color Doppler echocardiography , hemodynamic , heart weight , lung water content and the content of collagen type ⅠandⅢafter contin-uous dosing for 30 days.Results Compared with model , ADT can im-prove left ventricular function of myocardial infarction rats , improve sig-nificantly left ventricular ejection fraction significantly , reduce left ven-tricular end-diastolic pressure and cavity size , the lung water content and the range of myocardial infarction , inhibit ventricular remodeling , etc.Conclusion ADT can improve the cardiac function after myocardial infarction in rats.