西洋参茎叶皂甙(100,300,500μg/ml)可剂量依赖性使培养大鼠心肌细胞动作电位的波幅、波宽、阈电住、最大舒张电位,最大除极速度及复极50%水平的动作电位波宽一致性减小。与二氯化锰(0.1μg/ml)和异搏定(1μmol/L)比较可产生相似作用。钙离子(200mmol/l)可翻转西洋参茎叶皂甙(300μg/ml)的作用。初步观察表明,该药可能具有钙通道阻断作用。
Abstract
In this experiment,PQS(100,300,500μg/ml)decreased the amplitude of actionpotential, overshooting, threshold, maximum diastolic potenlic,maximum rate of depolarizationand action potential duration at 50%level repolarization in cultivated rat cardiac cells. The effectsof PQS(300~500μg/ml) were similar to those of MnCl2(0.1μg/ml) and verapamil(1.0μmol/L)。The Ca ̄(2+)(200mmol/L)could reverse the effect of PQS(300μg/ml)on inhibiting electricalparameter of action potential of rat cells. The results indicated that PQS may affect calcium channel block.
关键词
西洋参茎叶皂甙 /
心肌细胞 /
细胞培养 /
动作电位
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Key words
PQS /
myocardiocyte /
cell culture /
action potential
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参考文献
1任贵兴,王铁生,吕兴山,等.西洋参茎叶总皂甙、氨基酸及无机元素含量的研究.特产科学实验,1987,(4):1.
2杨世杰,钟国赣,张文杰,等.西洋参塞叶皂甙对大鼠培养心肌细胞氧化损伤的保护作用.中国中药杂志,1992,9(17):555.
3杨世杰,马兴元,矢岛道夫,等.西洋参サポニノの心筋取缩力に対すゐ而作用.愛知医科大学医学会志.1992,9(17):555.
4李松云,郭力达,王健春,等?西洋参茎叶皂甙抗失血性休克及对心脏的保护作用.中华医学杂志,1990,7(70) :411.
5赵光东,赵德化,盛宝恒.西洋参茎叶皂甙的抗实验性心律失常作用.第四军医大学学报,1987,8(5):309.
6江岩,汪淑衍,张保国,等.硒与培养心肌细胞的自发性搏动.应用生理学杂志,1987,3(1):26.
7Payct MD, Schannc OF, Ruiz-Ccrctti E. Compatition for slow channel of Ca2+,Mn2+,verapamil, and D-600 in rat ventricular muscle. Moi Cell Cardiol, 1980,12 : 635.
8Sperelakis N. Electrophysiology of calcium antagonist. J Mol cell cardiol,1987,19(Suppl Ⅱ) : 19.
9Tsien RM, Hess P, McCIeskey EW, et al. Calcium chan nels : Mechanisms of electivity permeation and blocd.Ann Rev Biophys Chem,1987,16 : 265.
10Lee KS, Tsien RW. Mechanism of calcium channel blockade by verapamil, D 600; diltiazem and nitrendipine in single dialyed heart cells. Nature,19S3;302 : 790a.
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脚注
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