Objective: To explore the effect of Yuxintong (YXT) on the endothelin converting enzyme (ECE) and the nitric oxide synthase (NOS) gene expression levels and cooper-zinc-superoxide dismutase(SOD) activity.

• 目的：探讨益气活血复方愈心痛胶囊对缺血心肌组织内皮素转换酶（ECE）、一氧化氮合酶（NOS）基因表达和铜锌超氧化物歧化酶（铜锌－SOD）免疫组织化学反应的影响，阐明愈心痛胶囊抗心肌缺血的作用机制。