目的：研究二十五味珊瑚丸、如意珍宝丸、二十味沉香丸联合用药对大鼠局灶性脑缺血损伤的保护作用。方法：80只SD大鼠随机分为4组。假手术组和模型组每日灌胃给予生理盐水（1 mL/100 g）；阳性对照组每日灌胃给予尼莫地平（1.89 mg/100 g）；联合给药组每日早中晚分别灌胃给予二十五珊瑚丸（7 mg/100 g）、如意珍宝丸（31.5 mg/100 g）、二十味沉香丸（49 mg/100 g）。7天后采用改良线栓法制备大鼠大脑中动脉阻塞（MCAO）模型，并于缺血24 h后，2，3，5-氯化三苯基四氮唑（TTC）染色观察脑梗死面积；干湿重法计算脑含水量；并检测缺血脑组织NO含量（硝酸还原酶法）、血清SOD活性（黄嘌呤氧化酶法）；血清MDA 含量（TBA法）；血清LDH 活性（丙酮酸法）。结果：与模型组相比，联合给药能够显著降低脑缺血大鼠脑梗塞面积、脑含水量及缺血脑组织中NO含量，提高血清SOD活性、减少脂质过氧化产物MDA含量并使LDH活性降低。结论：实验结果表明，二十五味珊瑚丸、如意珍宝丸、二十味沉香丸联合用药可通过减少梗死灶、减轻脑水肿、抑制氧化应激反应等，对缺血脑组织产生一定保护作用。

This study was aimed to investigate the preventing efficacy of the combined using of Er-Shi-Wu-Wei Shan-Hu (ESWWSH) pill, Ru-Yi Zhen-Bao (RYZB) pill, Er-Shi-Wei Chen-Xiang (ESWCX) pill on the focal cerebral ischemia injury in rats. A total of 80 Sprague-Dawley (SD) rats were randomly divided into four groups. In the sham operation group and the MCAO model group, normal saline was given orally every day (1 mL/100 g). In the positive control group, nimodipine was given orally every day (1.89 mg/100 g). In the drug combination group, ESWWSH pill (7 mg/100 g), RYZB pill (31.5 mg/100 g), ESWCX pill (49 mg/100 g), were separately given in the morning, noon and evening every day. Improved MCAO was used in the model establishment after 7-day intragastrical administration. After 24 h brain infarction, TTC method was used in the determination of the cerebral infarct size. Drying and weighing method was used in the calculation of brain water content. Determinations were made on content of NO in ischemic brain issues (nitrate reductase method); activities of SOD in serum (xanthine oxidase method); content of MDA in serum (TBA method); and activities of LDH in serum (pyruvate method). The results showed that compared with the MCAO model group, the combined using of three Tibetan classical prescriptions can obviously reduce the cerebral infarct size, brain water content and the NO content in brain issues, increase the activity of SOD, reduce the content of MDA, and reduce the activity of LDH in serum. It was concluded that the research preliminarily showed that the combined using of ESWWSH pill, RYZB pill and ESWCX pill can protect the ischemic brain tissues, such as reducing the cerebral infarct size, alleviating brain edema, and inhibiting oxidative stress reactions.

国家自然科学基金委面上项目（81274184）：三个藏药经典方早中晚组合给药协同治疗脑缺血机制探讨，负责人：谭睿。