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Antiarrhythmic Effects of Magnesium on Single Ventricular Myocytes Masahiro Aomine 1 , Youichi Tatsukawa 2 , Tsuguhisa Ehara 3 1Department of Food and Nutrition, Nakamura Gakuen College 2Department of Physiology, Medical College of Oita 3Department of Physiology, Saga Medical School Keyword: マグネシウム , 抗不整脈作用 , 心室筋細胞 , magnesium , antiarrhythmic effect , ventricular cell pp.677-683
Published Date 1992/7/15
DOI https://doi.org/10.11477/mf.1404900505
  • Abstract
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Despite magnesium ions (Mg)'s widespread use for antiarrhythmic purposes, little is known concerning its antiarrhythmic mechanisms. We, therefore, examined Mg effects on delayed afterdepolarization (DAD), early afterdepolarization (EAD) , triggered activity (TA) and aftercontraction (AC), using isolated ventricular cells and/or ventricular papillary muscle. In the experi-ments using the multicellular preparation, ACs were measured, with the use of a strain gauge. ACs were induced in isolated rat papillary muscle superfused with low K+ (0.5 mM) medium, after a train stimulation (2-5Hz, 10-30 beats).


Copyright © 1992, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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