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1997 Fiscal Year Final Research Report Summary

Hemodynamic Interactions of Anesthetics and K Channel Openers in Chronically Instrumented Dogs

Research Project

Project/Area Number 07457359
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Anesthesiology/Resuscitation studies
Research InstitutionNagasaki University

Principal Investigator

SUMIKAWA Koji  Nagasaki University School of Medicine Professor, 医学部, 教授 (60028660)

Co-Investigator(Kenkyū-buntansha) HASUO Hiroshi  Nagasaki University School of Medicine, Hospital, Assistant, 医学部・附属病院, 助手 (40271126)
FUJIE Toru  Nagasaki University School of Medicine, Hospital, Assistant, 医学部・附属病院, 助手 (90190008)
Project Period (FY) 1995 – 1997
KeywordsChronically Instrumented Dog / Anesthetics / Potassium Channels / Hemodynamics / Coronary Hemodynamics / Sevoflurane / Isoflurane
Research Abstract

The present study was carried out to determine the hemodynamic interactions of KATP channel openers and anesthetics in chronically instrumented dogs.
Dogs were chronically instrumented to measure mean arterial pressure (MAP), heart rate (HR), left circumflex coronary blood flow (CBF), cardiac output (CO), and regional contractile function (%SS). Hemodynamics were measured continuously in the conscious state or during anesthesia.
The KATP channel openers, cromakalim, nicorandil and JTV-506, were shown to have selectively potent effect on coronary vasodilation. The effects of coronary vasodilation caused by isoflurane and sevoflurane were completely abolished by a KATP channel closer, glibenclamide, suggesting that the activity of KATP channels might contribute the mechanism underlying volatile anesthetics on vasodilation. Isoflurane enhances the vasodilating action of cromakalim on both systemic and coronary vasculature and attenuates the cromakalim-induced increases in CO and myocardial contractility. The results also suggest that when the pharmacology of KATP channel openers are studied in animals, the effect of anesthetics should be excluded. The experiment of arrhythmias indicated that Ito but not KATP channels might be involved in the mechanism in producing halothane-epinephrine arrhythmias.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Sumikawa K, Zhang S et al.: "Role of ATP-sensitive potassium channel in coronary and systemic hemodynamic actions of sevoflurane in chronically instrumented dogs" Anesthesiology. 85・3. A543 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Zhang S, Sumikawa K, et al.: "The ATP-sensitive potassium channel opener alters MAC for halothane but not for isoflurane in dogs" Acta Med Nagasaki. 42. 22-26 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Zhang S, Hasuo H, et al.: "Effect of JTV506, a novel ATP-sensitive potassium channel opener on systemic and coronary hemodynamics in chronically instrumented dogs" Anesthesiology. 87・3. A546 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sumikawa K, Zhang S, et al.: "Role of ATP-sensitive potassium channel in systemic and coronary hemodynamic actions of isoflurane in chronically instrumented dogs" Anesth Analg. 84. S550 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Zhang S, Todoroki S et al.: "Role of potassium channels in halothan-epinephrine arrbythmias" Res Commun Mol Pathol Pharmacol. 100・3. 339-350 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tomiyasu S, Hara T.et al.: "Comparative analysis of systemic and coronary hemodynamics during sevoflurane-and isoflurane-induced hypotension in dogs" J Cardiorasc Pharmacol. in press.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sumikawa K,Zang S,Ureshino H,Shibata O,Morooka H: "Rele of ATP-Sensitive Potassium Channel in Coronary and Systemic Hemodynamic Actions of Sevoflurane in Chronically Instrumented Dogs" Anesthesiology. 85 (3). A543 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sumikawa K,Zhang S,Shibata O,Ureshino H,Fujigaki T: "The ATP-Sensitive Potassium Channel Opener AltersMAC for Halothane but not for Isoflurane in Dogs" Abstract Book of 11th World Congress of Anaesthesiologists.574 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Zhang S,Sumikawa K,Shibata O,Ureshino H,Todoroki S: "The ATP-Sensitive Potassium Channel Opener Alters MAC for Halothane but not for Isoflurane in Dogs" Acta Med.Nagasaki. 42. 22-26 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Zhang S,Hasuo H,Shibata O,Morooka H,Sumikawa K: "Effect of JTV506, A Novel ATP-Sensitive Potassium Channel Opener, Systemic and Coronary Hemodynamics in Chronically Instrumented Dogs" Anesthesiology. 87 (3). A546 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Zhang S,Sumikawa K,Ureshino H,Tomiyasu S,Shibata O: "Comparative Effects of KATP Channel Opener, Nicorandil, JTV506 and Cromakalim, on Systemic and Coronary Hemodynamics in Chronically Instrumented Dogs" Anesthesiology. 87 (3). A606 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sumikawa K,Zhang S,Ureshino H,Shibata O,Morooka H,Hasuo H: "Role of ATP-Sensitive Potassium Channel in Systemic and Coronary Hemodynamic Actions of Isoflurane in Chronically Instrumented Dogs" Anesth Analg. 84. S550 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Zhang S,Todoroki S,Ureshino H,Morooka H,Makita T,Shibata O,Sumikawa K: "Role of Potassium Channelds in Halothane-Epinephrine Arrhythmias" Res Commun Mol Path pharmacol. 100 (3). 339-350 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tomiyasu S,Hara T,Hasuo H,Ureshino H,Sumikawa K: "Comparative Analysis of Systemic and Coronary Hemodynamics during Sevoflurane- and Isoflurane-Induced Hypotension in Dogs" J Cardiovasc Pharmacol. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sakai K,Zhang S,Tomiyasu S,Ureshino H,Sumikawa K: "Interaction of KATP Channel Opener and Isoflurane on Systemic and Coronary Hemodynamics" Anesthesiology. 89 (3). A611 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sumikawa K: "Comparative Effects of KATP Channel Openers on Systemic and Coronary Hemodynamics in Chronically Instrumented Dogs" Abstract Book of 10th Asian Australasian Congress of Anaesthesiologists.FE4. (1998)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-12-08  

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