Antifibrillatory actions of bepridil and butyl-MDI, two intracellular calcium antagonists.

Antifibrillatory actions of bepridil and butyl-MDI, two intracellular calcium antagonists.
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贝普地尔和丁基 MDI(两种细胞内钙拮抗剂)的抗纤维颤动作用。

DOI:
10.1016/0014-2999(85)90107-4
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发表时间:
1985
影响因子:
5
通讯作者:
Lucchesi,BR
Lucchesi,BR
中科院分区:
医学2区
文献类型:
--
作者:
Lynch,JJ;Rahwan,RG;Lucchesi,BR

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研究了两种细胞内钙拮抗剂bepridil和butyl-methyl edioxyindene (BU-MDI)在麻醉犬体内的抗纤颤和电生理作用。贝比地尔(1.0-10.0 mg/kg静脉注射)显著增加无阻塞冠状动脉血流测定的心室颤动电阈值,并与心室兴奋性显著降低和心室心肌传导进行性抑制相关。BU-MDI (3.0-30.0 mg/kg静脉注射)在通畅的冠状动脉血流期间没有显著改变心室颤动阈值,也没有显著改变心室兴奋性、传导性或难固性等电生理特性。然而,贝比地尔(10mg /kg静脉注射)或BU-MDI (30mg /kg静脉注射)均可导致短暂性心肌缺血时测定的心室颤动阈值显著升高,使阈值恢复到相应的非缺血水平。这些结果表明,抑制细胞内钙的作用和/或可用性可能在短暂缺血时bumdi和bepridil的抗纤颤作用中起作用。
The antifibrillatory and electrophysiologic actions of bepridil and butyl-methylenedioxyindene (BU-MDI), two intracellular calcium antagonists, were examined in anesthetized dogs. The administration of bepridil (1.0–10.0 mg/kg i.v.) significantly increased the electrical threshold for ventricular fibrillation determined during unobstructed coronary flow, and was associated with a significant decrease in ventricular excitability and a progressive depression in ventricular myocardial conduction. BU-MDI (3.0–30.0 mg/kg i.v.) did not significantly alter ventricular fibrillation thresholds during unobstructed coronary flow, nor did it significantly alter electrophysiologic properties such as ventricular excitability, conduction or refractoriness. The administration of either bepridil (10 mg/kg i.v.) or BU-MDI (30 mg/kg i.v.), however, resulted in significant increases in the ventricular fibrillation thresholds determined during transient myocardial ischemia, restoring the threshold values to corresponding non-ischemic levels. These results suggest that an inhibition of the action and/or availability of intracellular calcium may play a role in the antifibrillatory actions of BU-MDI and bepridil during transient ischemia.
新型抗心绞痛药贝普地尔的抗心律失常和电生理作用。
DOI: 10.1097/00005344-198003000-00010
发表时间: 1980
影响因子: 3
作者:
K. Kane;E. Winslow
通讯作者: E. Winslow
硝苯地平、地尔硫卓、苯普地尔和维拉帕米被心脏和平滑肌吸收。
DOI: 10.1016/0014-2999(83)90330-8
发表时间: 1983
影响因子: 5
作者:
Pang,DC;Sperelakis,N
通讯作者: Sperelakis,N
苯普地尔对肌浆网 Ca 依赖性 ATP 酶活性的影响。
DOI: --
发表时间: 1981
影响因子: 5.8
作者:
A. Younès;C. Fontanarava;J. Schneider
通讯作者: J. Schneider
DOI: --
发表时间: 1975
影响因子: --
作者:
E. Moore;J. Spear
通讯作者: J. Spear
Bépridil 是一种新的氧化磷酸化效应物。
DOI: --
发表时间: 1977
期刊: Biochimie
影响因子: 3.9
作者:
A. Younès;N. Moins;M. Habert
通讯作者: M. Habert