摘要
目的:探讨艾叶醇提物对热敏通道TRPV1的影响。方法:运用全细胞膜片钳技术,在转染人源TRPV1的HEK293细胞上,测量艾叶醇提物对细胞跨膜电流的影响。结果:全细胞膜片钳数据显示,艾叶醇提物可以激活TRPV1通道并产生较为明显的跨膜电流;与TRPV1激动剂辣椒素比较,艾叶诱发的电流密度、电流-电压的关系与其十分相似;在进行2个浓度测试中,艾叶生药3mg/ml与10mg/ml比较,10mg/ml的艾叶醇提物具有更强的激动剂效应,甚至超过了10μM辣椒素激动TRPV1所产生的电流。结论:艾叶醇提物中含有TRPV1激动剂,艾叶温经散寒、止痛功效的分子机制可能与其活化热敏通道TRPV1有关。
Objective: To investigate the effect of ethanol extracts of Artemisiae argyi on thermosensitive channel,Transient Receptor Potential Vanilloid 1(TRPV1). Methods: Whole cell voltage clamp technique was used to record transmembrane currents induced by the Artemisiae argyi extracts in HEK 293 cells that expressed human TRPV1. Results: Whole cell voltage clamp technique date shows: Ethanol extracts of Artemisiae argyi evoked robust currents comparable to that by the known TRPV1 agonist, capsaicin, in current density and current-voltage relationship. Conclusions: The ethanol extracts of Artemisiae argyi contain at least one TRPV1 agonist,which may underlie the warm the meridian and dissipate cold to relieve pain effects of Artemisiae argyi.
引文
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