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丹参素对甲亢大鼠血管平滑肌的保护作用 被引量:1

Effects of Danshensu on Vascular Reactivity in Hyperthyroidism Rat
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摘要 目的:观察甲状腺素连续给予对大鼠胸主动脉收缩舒张性能的影响以及丹参素的作用。方法:大鼠ig左甲状腺素(Levo-thyroxine,L-thy)15d,观察大鼠离体胸主动脉环对去甲肾上腺素(NE)、氯化钾(KCl),乙酰胆碱(Ach)反应性的改变,以及丹参素10mg/kg的治疗作用。结果:甲状腺素给药15d,大鼠胸主动脉内皮依赖性舒张功能下降,血清中NO含量降低,NOS活性下降。血管对KCl诱发的收缩敏感性降低。丹参素能有效干预甲亢对血管平滑肌的影响,恢复血管正常收缩舒张状态。结论:甲状腺素连续给予,大鼠血管平滑肌收缩舒张功能减弱,丹参素可能通过保护NOS功能以及平滑肌上钙通道干预甲亢血管平滑肌反应性的变化。 Objective:To observe the effects of Danshensu on the thoracic aorta reactivity in hyperthyroidism rat s which induced by Levo-thyroxine(L-thy)for 15days.Methods:Male rats were divided into three groups:normal control,L-thy 15d and Danshensu treated group.The levels of NO,total NOS and eNOS in serum were measured.Concentration-dependent contractile responses of aortic rings to NE(10-9mol/L-10-5mol/L)and KCl(10,20,40,80mmol/L)were measured by MedLab biological signal collection.Concentration-dependent relaxat...
出处 《中医药学报》 CAS 2009年第1期9-11,0,共4页 Acta Chinese Medicine and Pharmacology
基金 国家自然科学基金资助项目:丹参多组分多靶点间接药动学-药效学模型研究(No:30772609)
关键词 左甲状腺素 血管平滑肌 收缩 丹参素 Levo-thyroxine vascular smooth muscle contractile responses Danshensu
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