摘要
目的 研究花椒油素对CaCl2和钙离子载体A23187调节血小板及其中Ca2+浓度的作用。方法 比浊法测定血小板聚集,用Fura-2/AM荧光法测定细胞内游离钙的水平。结果 花椒油素显著地抑制CaCl2和A23187诱导的血小板聚集,前者的抑制率为9.0%(67.1%,后者的抑制率为18.1%(72.5%。明显降低A23187诱导的血小板胞质游离Ca2+浓度,降低率为12.8%(63.4%。结论 花椒油素抑制聚集作用与降低细胞内游离Ca2+水平之间呈线性正相关(P<0.01)。
Objective To study the effects of xanthoxylin on platelet aggregation and freeCa2+ level induced by CaCl2 and A23187. Methods Platelet aggregation and free Ca2+ level in the platelet cytosol were measured by turbidimetry and fluorimetry of Fura-2/AM. Results Xanthoxylin at the concentration of 0.037, 0.185, 0.924, 9.240, 92.40 μmol/L significantly inhibited CaCl2 and A23187-induced platelet aggregation, with the inhibition rates ranging from 9.0% to 67.1% for CaCl2 and from 18.1% to 72.5% for A23187. A23187-induced free-Ca2+ level in the platelet cytosol was also significantly reduced (from 12.8% to 63.4%). Conclusion The inhibition rate of platelet aggregation was positively correlated with the reduction rate of cytosolic free-Ca2+ level by xanthoxylin.
出处
《第一军医大学学报》
CSCD
2000年第6期513-514,共2页
Journal of First Military Medical University
关键词
花椒油素
钙离子
钙离子载体
血小板聚集
xanthoxylin
calcium ion
calcimycin
platelet aggregation
cytosolic free Ca2+
fluorescence analysis