参附注射液对大鼠心肌缺血再灌注损伤的影响

目的观察单味中药红参、附子及参附注射液对大鼠心肌缺血再灌注损伤的保护作用。方法4 0只雄性SD大鼠随机分为假手术组、缺血再灌注组、参附组、红参组及附子组。结扎冠状动脉左前降支使心肌缺血 ,6 0min后恢复血流并持续 2 4 0min ,复制缺血再灌注损伤模型。治疗组分别于缺血再灌注前 10min经右颈内静脉注射参附注射液 10mg/kg ,红参注射液 9mg/kg ,附子注射液 1mg/kg。模型组及假手术组给予等体积生理盐水。观察心肌梗死面积的大小 ,光镜和透射电镜下的心肌病理变化 ,测定血清乳酸脱氢酶(LDH)、磷酸肌酸激酶 (CK)及心肌组织丙二醛 (MDA)和超氧化物歧化酶 (SOD)值。评价红参、附子单独使用或参附合用对大鼠心肌缺血再灌注损伤的保护作用。结果参附组、红参组及附子组与模型组比较 ,心肌梗死面积明显缩小 ,血清LDH、CK值降低 ,心肌组织MDA值减小 ,SOD值升高。光镜及透射电镜下心肌细胞变性坏死程度及心肌细胞超微结构形态改变显著减轻。治疗组组间比较 ,参附组优于红参组和附子组。红参组和附子组之间比较 ,差异无显著性。结论红参、附子或参附合用对大鼠心肌缺血再灌注损伤均有保护作用。参附合用疗效优于红参和附子单独应用

英文摘要:

ObjectiveTo observe the protective effect of Panax Ginseng (PG), Aconitum Carmichaeli (AC), and their combination (PG AC) on myocardial ischemia/reperfusion injury in rats. MethodsRat’s ischemia reperfusion injury model was established by ligating left anterior descending coronary artery for 60 min followed by reperfusion for 240 min. Forty male rats were randomly divided into five groups, the sham operation group, the model group, the three treated groups. The three treated groups were treated with PG, AC and PG AC respectively by given the drugs 10 min before ischemia reperfusion, and to the sham operation group and the model group, saline was given instead. The infarction area, pathologic changes of myocardial tissue (under light and electron microscopy), activity of creatine phosphokinase (CK) and lactate dehydrogenase (LDH) in serum, content of malondialdehyde (MDA) and superoxide dismutase (SOD) in myocardial tissue were observed to evaluate the protective effect of treatment. ResultsThe area of acute myocardial infarction was lesser, activity of LDH and CK were lower in the three treated groups than those in the model group. Content of SOD was significantly higher and that of MDA was markedly lower in the former three than those in the model group. Light and electron microscopic examination showed that the necrotic degeneration and pathologic changes of myocardiocytes in the treated groups were significantly milder than that of the model group. As comparing the effect between the three treated groups, PG AC showed the best, and insignificant difference was shown between PG and AC. ConclusionBoth PG and AC, and their combination have obviously protective effects on myocardium against ischemia reperfusion injury, which of PG AC is superior to that of PG or AC used singly.

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