期刊
BULLETIN OF EXPERIMENTAL BIOLOGY AND MEDICINE
卷 131, 期 6, 页码 523-525出版社
CONSULTANTS BUREAU
DOI: 10.1023/A:1012381914518
关键词
arrhythmias; cannabinoid receptors; K+ channels
Preliminary intravenous injection of cannabinoid receptor agonist HU-210 (0.05 mg/kg) reduced the incidence of ventricular arrhythmias during 10-min coronary occlusion and 10-min reperfusion in chloralose-anesthetized rats. Preliminary injection of type I cannabinoid receptor antagonist SR 141716A (3 mg/kg) had no effect on the antiarrhythmic effect of HU-210, while type II cannabinoid receptor antagonist SR 144528 (1 mg/kg) completely abolished the effect of HU-210. Preconditioning with glibenclamide (0.3 mg/kg), an inhibitor of ATP-dependent K+-channels, did not affect the antiarrhythmic activity of HU-210. These findings suggest that antiarrhythmic effect of HU-210 is mediated through activation of type II cannabinoid receptors rather than activation of K+-channels.
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