开心胶囊对大鼠心梗后左室非梗塞区胶原改建的影响

Effect of Kaixin Capsule in Reconstructing the Collagen of Non-infarct Region of Left Ventricle in Rats after Myocardial Infarction

【目的】探讨中药复方开心胶囊对大鼠心梗后心室重构的影响及作用机理。【方法】结扎左冠状动脉主干造成大鼠心梗后心室重构模型 ,术后 3d给予开心胶囊 (西洋参、黄芪、麦冬、川芎、香附等组成 ) 8周后 ,用羟脯氨酸法及放免法检测大鼠非梗塞区左室心肌胶原总量及循环和心肌局部血管紧张素Ⅱ、醛固酮含量。【结果】模型组大鼠左室非梗塞区胶原总量高于假手术组 (P <0 0 1)。开心胶囊高、低剂量组胶原总量较模型组降低 (P <0 0 1) ,与开搏通组相近 (P >0 0 5 )。【结论】开心胶囊可以抑制胶原蛋白的合成 ,增加心肌顺应性。对肾素—血管紧张素—醛固酮系统的影响可能是其作用机制之一。

To explore the effect of Kaixin Capsule (KC, composed of Radix Panacis Quinquefolii, Radix Astragali, Radix Ophiopogonis, Rhizoma Chuanxiong,Rhizoma Cyperi, etc.) in reconstructing the collagen of non infarct region of left ventricle in rats after myocardial infarction (MI) and to study its mechanism.Seventy rats were allocated to mimic operation group (Group Ⅰ), model group (Group Ⅱ), high dosage KC group (Group Ⅲ), low dosage KC group (Group Ⅳ) and positive control group (Group Ⅴ). Rat models of left ventricle reconstruction were established by the ligation of the main stem of left coronary artery. Three days after modeling, the rats were treated with KC for eight weeks. And then the total collagen content in the myocardium of non infarct region and angiotensin Ⅱ (AngⅡ) and aldosterone (ALD) levels in blood and myocardium were measured by oxyproline hydroxyproline method and radioimmunoassay. The total collagen content was higher in Group Ⅱ than that in Group Ⅰ (P<0 01), and it was decreased in Group Ⅲ and Group Ⅳ as compared with that in Group Ⅱ(P<0 01) and similar to that in Group Ⅴ (P>0 05) . [Conclusion]KC can inhibit the production of collagen and increase myocardial compliance and its mechanism may be involved in the regulation of rennin angiotensin aldosterone system.