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中国临床药理学与治疗学 ›› 2000, Vol. 5 ›› Issue (1): 14-17.

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肾上腺髓质素逆转去甲肾上腺素和内皮素的缩血管作用

严晓伟, Christoph Schalcher1, Wolfgang Kiowski1   

  1. 中国医学科学院、中国协和医科大学 、北京协和医院心脏内科,北京 100730;
    1瑞士苏黎世大学医院心脏内科
  • 收稿日期:2000-02-10 出版日期:2000-03-26 发布日期:2020-11-26
  • 作者简介:严晓伟,男,心内科副主任,副教授,主要从事临床心血管药理学研究。

Adrenomedullin abolish the vasoconstrictive effect of norepinephrine and endothelin

YAN Xiao-Wei, Christoph Schalcher1, Wolfgang Kiowski1   

  1. Division of Cardiology,PUMC Hospital,Beijing 100730;
    1Division of Cardiology,University Hospital,Zurich,Switzerland
  • Received:2000-02-10 Online:2000-03-26 Published:2020-11-26

摘要: 目的 肾上腺髓质素(ADM) 为新型的血管扩张物质,有关 ADM与其它血管收缩物质的相互作用尚无报道。方法 本文以 14 例正常志愿者为对象,分两组经肱动脉分别注射 ADM或/和去甲肾上腺素(NE) (n =7),及 ADM或/和内皮素(n =7),观察前臂血流量的变化,并将单独用药和联合用药进行比较 。结果 经肱动脉注射 ADM,可使前臂血流量较用药前增加 3倍,血管扩张作用在停药后 40 min 逐渐消失。经肱动脉注射 NE 或内皮素,分别使前臂血流量下降 61%和73%。低浓度的 ADM与 NE 或内皮素联合输注,即可完全逆转后两者的血管收缩作用。结论 ADM为强烈的血管扩张剂,单次注射作用持续约 40 min 。在前臂阻力血管低浓度的 ADM可以逆转高浓度的 NE 或内皮素的血管收缩作用 。

关键词: 肾上腺髓质素, 内皮素, 去甲肾上腺素, 前臂体积描记

Abstract: Aim Adrenomelullin is a novel vasodilator with a potent hemodynamic effect on human arterioals.The interaction of adrenomedulling with vasoconstrictors in normal volunteers have not been investigated.Methods 14 normal volunteers were divided into two groups randomly with a double blind manner.Group A (n =7) were treated with ADM or/and norepinephrine and group B(n =7),ADM or/and endothelin,through brachial artery infu-sion of different doses.Forearm blood flow were observed (with plethysmography)before,during and after durg administration.Results Intraarterial infusion of ADM resulted a three-fold increase of forearm blood flow.The vasodilation effect of ADM disappeared 40 minutes after drug discontinuation.Intraarterial infusion of norepinephrine and endothelin resulted 61%and 73%decrease of FBF,respectively.Combined infusion of low dose ADM with high dose norepinephine or endothelin could abolish the vasoconstrictive effects of pre-mentioned vasoconstristors.Conclusion ADM is a potent vasodilator.Its vasodila-tion effect lasts 40 min after discontinuation of infusion.In forearm resistance arteries,ADM can abolish the vasoconstrictive effects of high dose norepinephrine or endothelin.

Key words: adrenomedullin, endothelin, norepinephrine, forearm plethysmography

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