黄精心血管活性部位的筛选

目的研究黄精中具心血管活性的部位及其对实验性心肌缺血的影响。方法采用系统溶剂分离法对黄精各个活性部位进行提取分离,注射异丙肾上腺素致大鼠心肌缺血造模后对黄精提取分离的各部位心血管活性进行药效学研究。结果黄精中具心血管活性的最佳部位为正丁醇萃取物,此部位主要含有一些苷类及苷元类成分;其次为水溶性部位,具有较强心血管活性,主要含有一些生物碱盐、黄酮类、苷类及部分苷元类成分;再次为综合提取物黄精乳液,而石油醚萃取物、氯仿萃取物、水提乙醇沉淀物心血管活性极弱。结论中药黄精心血管活性的最佳活性部位为中等极性部分。

A Screening Test for the Active Cardiovascular Components from Rhizoma Polygonati

Objective To screen the active cardiovascular components from Rhizoma Polygonati and to observe the effect on myocardial ischemia rat.Methods The active components from Rhizoma Polygonati were extracted by system solvent separation methods,and their cardiovascular effects on the rat models induced by subcutaneous injection of isoproterenol were tracked to find out the optimal active cardiovascular components.Results Among the extracts from Rhizoma Polygonati,the n-Butanol(EB)extract which consisted of glycosides and aglycons,was the best active cardiovascular component;aqueous extract which consisted of alkaloids,flavonoids,glycosides and aglycons,was the better component;the emulsion of Rhizoma Polygonati,which consisted of petroleum ether extract,chloroform extract and water-ethanol extract had less cardiovascular activity.Conclusions The parts with medium polarity from Rhizoma Polygonati have the best cardiovascular activities.