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Enhancement of Susceptibility to Ouabain in Ischemic Rat Heart Masato Tani 1 , James R Neely 2 1Department of Geriatrics, Keio University School of Medicine 2Geisinger Clinic, Weis Center for Research Keyword: 再灌流傷害(reperfusion injury) , ジギタリス(digitalis) , Na/Kポンプ(Na/K pump) pp.37-43
Published Date 1991/1/15
DOI https://doi.org/10.11477/mf.1404900204
  • Abstract
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During 10 mins of reperfusion after 25 mins global ischemia, subtoxic doses of ouabain (50, 100,μM) were used and followed by 20 mins reperfusion with standard buffer. At these doses ouabain had no harmful effects with 29% and 45% increase in developed pressure in aerobic hearts. Intracellular Na+ (Na1), 45Ca2+uptake and recovery of ventricular function were measured. Na1 increased from 15 to 64,μmol/g dw with no increase in 45Ca2+ uptake during ischemia. Upon reperfusion with standard buffer, additional gain in Na1 at 2mins (73μmol/g dw) was followed by a rapid decline (at 10 mins : 48,μmol/g dw).


Copyright © 1991, 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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