Effects of Tetrandrine on Aggregation and Morphological Changes of Platelets in Rabbits / 第三军医大学学报

ABSTRACT

The effects of tetrandrine on the aggregation and morphological changes of platelets were studied by using the rabbit platelet-rich plasma prepared with centri-fugation.It was found that tetrandrine could markedly inhibit the platelet aggregation induced by ADP,collagen,and arachidonic acid with an IC50(50% inhibitory concentration) of 38.9,30.3 and 44.3?g/ml respectively.The platelets pretreated with tetrandrine could not be stimulated to initiate morphological changes and granule release,and their normal structures were well preserved.In addition,di-pyridamole could enhance but excessive amount of extracellular calcium could weaken the inhibition of tetrandrine on platelet aggregation.