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III类抗心律失常药物对犬心脏缺血性心肌损伤的影响。

Effects of antiarrhythmic agents classified as class III group on ischaemia-induced myocardial damage in canine hearts.

作者信息

Sano T, Sugiyama S, Taki K, Hanaki Y, Shimada Y, Ozawa T

机构信息

Department of Anesthesiology, Faculty of Medicine, University of Nagoya, Japan.

出版信息

Br J Pharmacol. 1990 Mar;99(3):577-81. doi: 10.1111/j.1476-5381.1990.tb12971.x.

Abstract
  1. The cardioprotective effects of antiarrhythmic agents classified as class III, amiodarone, sotalol and E-4031, were investigated in anaesthetized dogs. 2. The left anterior descending coronary artery was occluded for 2 h. 3. Heart mitochondria were prepared from both the ischaemic and non-ischaemic areas, and their function was estimated polarographically. 4. Activities of the lysosomal enzymes, N-acetyl-beta-glucosaminidase and beta-glucuronidase, were measured in each fraction. 5. Two hour occlusion induced ventricular arrhythmias, and amiodarone, sotalol and E-4031 greatly suppressed the development of arrhythmias. 6. Amiodarone, sotalol and E-4031 significantly protected mitochondria against ischaemia, and prevented ischaemia-induced leakage of lysosomal enzymes. 7. Antiarrhythmic agents classified as class III show cardioprotective effects, which might participate in their antiarrhythmic effect.
摘要
  1. 研究了Ⅲ类抗心律失常药物胺碘酮、索他洛尔和E-4031对麻醉犬的心脏保护作用。2. 左冠状动脉前降支闭塞2小时。3. 从缺血区和非缺血区制备心脏线粒体,并用极谱法评估其功能。4. 测量各组分中溶酶体酶N-乙酰-β-氨基葡萄糖苷酶和β-葡萄糖醛酸酶的活性。5. 两小时的闭塞诱发室性心律失常,胺碘酮、索他洛尔和E-4031能显著抑制心律失常的发生。6. 胺碘酮、索他洛尔和E-4031能显著保护线粒体免受缺血损伤,并防止缺血诱导的溶酶体酶泄漏。7. Ⅲ类抗心律失常药物具有心脏保护作用,这可能参与了它们的抗心律失常作用。

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