安宫牛黄丸中汞、砷在正常和脑缺血模型大鼠体内的吸收与分布研究

目的:在正常大鼠和脑缺血大鼠灌胃服用安宫牛黄丸后,比较研究该药的朱砂和雄黄中汞和砷在大鼠体内的吸收和分布特点。方法:安宫牛黄丸以灌胃正常大鼠和脑缺血模型大鼠,药后在不同时间采血样、断头处死动物,取出大鼠的肝脏、肾脏和脑组织并制备匀浆,经微波消解,以原子吸收光谱仪检测总汞、总砷。结果:安宫牛黄丸灌胃正常大鼠后1h血液中的总汞、总砷含量最高;总汞在血液、肾脏中含量最高;总砷在血液中含量最高。安宫牛黄丸灌胃于脑缺血24 h模型大鼠后1 h在体内的汞和砷的分布特点同于正常大鼠。结论:安宫牛黄丸在血液中的达峰时间为1h;汞主要分布于血液、肾脏,而砷在血液中的浓度最高;汞和砷在正常大鼠和脑缺血模型大鼠的体内分布特点没有明显区别。

Absorption and Distribution of Mercury and Arsenic from Realgar and Cinnabar of Angong Niuhuang Pill in Normal Rats and Rats with Cerebral Ischemia

Objective: To study comparatively the characteristics of absorption and distribution of mercury and arsenic from realgar and cinnabar of Angong Niuhuang Pill in normal rats and the rats with cerebral ischemia after oral administration . Method: The blood samples and homogenates of liver , kidney and brain were prepared at various intervals after the animals were treated with Angong Niuhuang pill ig. The levels of total mercury and total arsenic in the blood and the organ homogenates were measured with Mi-crowava Accelerated Reaction System and AAs, respectively. Result: The blood concentrations of mercury and arseic reached the highest point in normal rats at one hour following single oral dosing of Angong Niuhuang pill. In normal rats, the mercury distribution was characterized by its higher level in blood and kidneys than in other organs, while a higher distribution of arsenic was found in blood than in organs. No difference in the distribution of mercury or arsenic was found between normal rats and rats with cerebral ischemia after the treatment with the pill. Conclusion: The highest level of mercury or arsenic in blood occurs at one hour after oral administration of the pill in normal rats. There is a higher distribution of mercury in blood and kidneys, while a higher distribution of the arsenic only in blood. There is no significant difference in the distribution of mercury or arsenic between the normal rats and the ischemic rats.