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肥大型心筋症における心室細動の発生メカニズムとその予防-臨床及び基礎からの検討-

Research Project

Project/Area Number 12770353
Research Category

Grant-in-Aid for Encouragement of Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Circulatory organs internal medicine
Research InstitutionKeio University

Principal Investigator

三好 俊一郎  慶應義塾大学, 医学部, 助手 (10296577)

Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2001: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2000: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywordsウサギ / 肥大型心筋症 / 心室性不整脈 / 突然死 / 活動電位 / パッチクランプ / 激発活動 / E4031
Research Abstract

Beta受容体に対する自己抗体は、同じ程度の心病変でありながら、より不整脈死が多い心筋症患者群でより高率に検出される。ゆえに我々が用いた、Beta受容体自己免疫型肥大型心筋症ウサギは、それら患者に対する、治療法の選択に重要であると考える。微小電極法による活動電位記録によると、より低頻度刺激時に活動電位の延長を認め、その他のVmaxや活動電位振幅などに大きな変化はなかった。肥大型心筋症ウサギの3割に異常なEarly after depolarization型の活動電位が観察され、1例に自発的なTriggered activityによる不整脈を観察した。現在、その活動電位の延長が、どのイオンチャネルの変化により起こっているのかをパッチクランプ法により解析中である。

Report

(2 results)
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] S, Tahara., S, Miyoshi et, al: "Potassium channel blocker activates extracellular single-regulated kinase through Pyk2 and epidermal growth factor receptor in rat cardiomyocytes"Journal of american college of cardiology. 38-5. 1554-63 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T, Sato., S, Miyoshi et, al: "Electrophysiologic findings of a patient with inappropriate sinus achycardia cured by selective radiofrequency catheter ablation"J Electrocardiol. 33(4). 381-6 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 三田村秀雄, 三好俊一郎 他: "Brugada症候群の治療"呼吸と循環. 49-5. 445-450 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T, Sato., S, Miyoshi.et, al: "Electropharmacologic effects of pilsicainide, a pure sodium channel blocker, on the remodeled atrium subjected to chronic rapid pacing"J Cardiovasc Pharmacol. 38(6). 812-20 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S, Takatsuki., S, Miyoshi et, al: "Respiratory cycle-dependent left atrial tachycardia"J Cardiovasc Electrophysiol. 12(10). 1202 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T, Sato., S, Miyoshi et, al: "Recovery of electrophysiological parameters after conversion of atrial fibrillation"Int J Cardiol. 79(2-3). 183-9 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T Kato,S Miyoshi et al.: "Calmodulin Kinases II and IV and Calcineurin are involved in Leukemia Inhibitory Factor-induced Cardiac hypertrophy in Rats"Circulation Research. 87. 937-945 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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