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中国临床药理学与治疗学 ›› 2004, Vol. 9 ›› Issue (4): 382-385.

• 研究原著 • 上一篇    下一篇

盐酸埃他卡林对血管内皮细胞分泌功能的影响

贾国栋, 刘国树, 汪海1   

  1. 解放军总医院南楼心肾科, 北京100853;
    1军事医学科学院毒物药物研究所, 北京100850
  • 收稿日期:2003-12-25 修回日期:2004-02-20 出版日期:2004-04-26 发布日期:2020-11-20
  • 通讯作者: 汪海, 男, 博士, 教授, 博士生导师, 国家新药审评委员, 研究方向:心血管药理学。Tel:010-66932651 Fax:010-68211656 E-mail:wh@ni c.bmi.ac.cn
  • 作者简介:贾国栋, 男, 博士, 主治医师, 主要从事心血管疾病临床和基础研究。Tel:010-66937653 E-mail:301jgd@sina.com。刘国树, 男, 博士, 教授, 博士生导师, 中华医学会心血管病分会秘书。
  • 基金资助:
    国家863 计划重大专项(№2002AA2Z3137)

Effects of iptakalim hydrochloride on secretion function of blood vessel endothelial cells

JIA Guo-Dong, LIU Guo-Shu, WANG Hai1   

  1. Department of Cardiology and Nephrology, PLA General Hospital, Beijing 100853, China;
    1Institute of Pharmacology and Toxicology, Academy of Military Medical Science, Beijing 100850, China
  • Received:2003-12-25 Revised:2004-02-20 Online:2004-04-26 Published:2020-11-20

摘要: 目的:研究新型抗高血压药物盐酸埃他卡林(Ipt) 对血管内皮细胞分泌功能的影响。方法:采用灌流消化法分离小牛主动脉内皮细胞(BAEC), 观察Ipt 对BAEC 分泌内皮素-1(ET-1)、前列环素(PGI2)和一氧化氮(NO) 的影响, 同时观察Ipt 对培养的BAEC 胞浆游离Ca2+浓度的影响。结果:在Ipt 浓度为10-6 mol·L-1及以上时, 能够剂量依赖性地抑制培养的BAEC 合成分泌ET-1, 并在Ipt 10-5 mol·L-1及以上时促进NO 的合成分泌, 同时在Ipt 浓度为10-4 mol·L-1及以上时, 显著地增高BAEC 胞浆游离Ca2+浓度。结论:Ipt 通过抑制内皮细胞合成分泌ET-1 和促进NO 的合成分泌, 从而使ET 和NO 的平衡状态得到改善;尚能增加内皮细胞[ Ca2+] i, 有利于内皮细胞合成NO 增加, 从而增强内皮介导的舒血管效应。

关键词: 盐酸埃他卡林, 血管内皮细胞, 内皮素-1, 前列环素, 一氧化氮

Abstract: AIM: To study the effects of the novel antihypertensive drug Iptakalim hydrochloride (Ipt) on the secretion function of blood vessel endothelial cells. METHODS: Bovine aortic endothelial cells (BAEC) were obtained by using digestion technique.Effects of Ipt on the endothelin-1 (ET-1), prostacyclin (PGI2) and nitric oxide (NO) secretion by BAEC were studied and effects of Ipt on the intracellular calcium concentration in BAEC were examined by miocrofluorometry of Fura-2/AM loaded cells.RESULTS: Ipt at 10-6 mol·L-1 or more could inhibit cultured bovine aortic endothelial cells from producing and releasing endothelin-1 in a concentrationdependent manner, together with an increase in NO production.Moreover, Ipt at 10-4 mol·L-1 or more induced a rapid elevation of intracellular calcium concentration in BAEC.CONCLUSION: Ipt can improve the balance between the release of relaxing and contracting factors from the endothelium by inhibiting ET-1 production and enhancing NO production in BAEC.The elevation effect of [ Ca2+] i by Ipt is essential for the cytoplasm synthesis of NO, and the effect may favorably enhance endotheliummediated dilation.

Key words: iptakalim hydrochloride, endothelial cells, endothelin-1, prostacyclin, nitric oxide

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