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用４５Ｃａ２＋摄入法测定了大鼠血小板摄取细胞外Ｃ２＋，观察山豆根碱对血小板摄取Ｃａ２＋的影响、结果表明，静息血小板可迅速摄取细胞外Ｃａ２＋，呈时间和浓度依赖性；ＡＤＰ促进血小板摄取Ｃａ２＋；山豆根碱以浓度依赖方式抑制静息的和ＡＤＰ诱导的血小板摄取细胞外Ｃａ２＋。这提示山豆根碱抑制血小板聚集的作用机制之一与阻止细胞外Ｃａ２＋内流入血小板，降低血小板胞浆内Ｃａ２＋浓度有关。
The uptake of extracellular C2 + in rat platelets was measured by 45Ca2 + ingestion. The effect of salbutamol on platelet Ca2 + uptake was observed. The results showed that resting platelets could rapidly uptake extracellular Ca2 + in a time and concentration dependent manner. ADP promoted platelet Uptake of Ca2 +; and that of erucicase inhibited resting and ADP-induced uptake of extracellular Ca2 + in a concentration-dependent manner. This suggests that one of the mechanisms of inhibition of platelet aggregation by root of farnesol is related to preventing extracellular Ca2 + from flowing into platelets and decreasing platelet cytoplasmic Ca2 + concentration.