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Novel therapeutic strategies for ventricular fibrillation as a mechanism of 3-dimensional scroll wave with filament.

Research Project

Project/Area Number 18H02802
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 53020:Cardiology-related
Research InstitutionThe University of Tokyo

Principal Investigator

YAMAZAKI MASATOSHI  東京大学, 大学院工学系研究科(工学部), 特任准教授 (30627328)

Co-Investigator(Kenkyū-buntansha) 富井 直輝  東京大学, 大学院工学系研究科(工学部), 助教 (00803602)
佐久間 一郎  東京大学, 大学院工学系研究科(工学部), 教授 (50178597)
辻 幸臣  長崎大学, 医歯薬学総合研究科(医学系), 講師 (60432217)
本荘 晴朗  名古屋大学, 環境医学研究所, 准教授 (70262912)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywords心室細動 / 3次元スクロール / フィラメント / VFストーム / スパイラル
Outline of Final Research Achievements

This study aimed to elucidate the mechanism of VF initiation and maintenance and depicting the 3D scroll waves that sustain VF. The goal is to construct the technical foundation for the clinical application of a new myocardial ablation technique. The applicants established a rabbit VF storm model where severe arrhythmia with repeated VF occurred and an implantable cardioverter-defibrillator was frequently triggered. When we implemented our proposed “phase dispersion analysis” during VF, we succeeded in continuously capturing the stump of a stable 3D scroll wave anchored in the septum.

Academic Significance and Societal Importance of the Research Achievements

VT/VFを駆動する3次元スクロールの理論的研究は盛んであるが、生体心でフィラメントの可視化に成功しているのは申請者のみである。理論・計算科学的研究から、スクロールの中心に位置するフィラメントは興奮性の低下した心筋において弯曲・延長・分裂することが報告されている。興奮性が異なる2種類のVFモデルを使用することで、生体心のフィラメント・キネティクスを解明し、新たな切り口からアプローチする革新的治療法開発に役立つ新知見を提供することが可能である。3次元スクロールを電極データのみから予測するプログラムの完成は、本質的な治療法の存在しなかったVF患者に対する個別化治療の確立につながる可能性がある。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (39 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (11 results) Journal Article (10 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 10 results,  Open Access: 5 results) Presentation (15 results) (of which Int'l Joint Research: 12 results,  Invited: 15 results) Remarks (3 results)

  • [Int'l Joint Research] Brown University/Cleveland clinic/University of Michigan(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Duisburg-Essen(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Universite de Montreal/McGill University(カナダ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] CNIC(スペイン)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Brown University/Cleveland Clinic/University of Michigan(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Duisburg-Essen(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Universite de Montreal/McGill University(カナダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] CNIC(スペイン)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Brown University/University of Michigan/The University of Oklahoma(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Duisburg-Essen(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Universite de Montreal/McGill University(カナダ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Cardiac macrophages prevent sudden death during heart stress.2021

    • Author(s)
      Sugita J, Fujiu K, Nakayama Y, Matsubara T, Matsuda J, Oshima T, Liu Y, Maru Y, Hasumi E, Kojima T, Seno H, Asano K, Ishijima A, Tomii N, Yamazaki M, Kudo F, Sakuma I, Nagai R, Manabe I, Komuro I.
    • Journal Title

      Nat Commun.

      Volume: 12(1) Issue: 1 Pages: 1910-1910

    • DOI

      10.1038/s41467-021-22178-0

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spatial phase discontinuity at the center of moving cardiac spiral waves2021

    • Author(s)
      Tomii Naoki、Yamazaki Masatoshi、Ashihara Takashi、Nakazawa Kazuo、Shibata Nitaro、Honjo Haruo、Sakuma Ichiro
    • Journal Title

      Computers in Biology and Medicine

      Volume: 130 Pages: 104217-104217

    • DOI

      10.1016/j.compbiomed.2021.104217

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Validation of Intraoperative Catheter Phase Mapping Using a Simultaneous Optical Measurement System in Rabbit Ventricular Myocardium2020

    • Author(s)
      Tomii N, Asano K, Seno H, Ashihara T, Sakuma I, Yamazaki
    • Journal Title

      Circulation Journal

      Volume: 84 Issue: 4 Pages: 609-615

    • DOI

      10.1253/circj.CJ-19-1020

    • NAID

      130007815573

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2020-03-25
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanism of electrical Defibrillation. Current states and future perspective.2020

    • Author(s)
      Shibata N, Inada S, Nakazawa K, Tomii N, Yamazaki M, Seno H, Honjo H, Sakuma I.
    • Journal Title

      Adv Biomed Eng. 2020;9:125-137

      Volume: 9 Pages: 125-137

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cardiac Spiral Wave Termination by Linear Regional Cooling toward Anatomical Boundary of Heart2020

    • Author(s)
      Seno H, Tomii N, Yamazaki M, Honjo H, Shibata N, Sakuma I
    • Journal Title

      Journal of Medical and Biological Engineering

      Volume: in press Issue: 3 Pages: 400-408

    • DOI

      10.1007/s40846-020-00517-8

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spiral Wave Reentry Control by Electrical Stimulus-Induced Virtual Electrode Polarization2019

    • Author(s)
      谷田部純弥、山﨑正俊、柴田仁太郎、富井直輝、佐久間一郎
    • Journal Title

      Transactions of Japanese Society for Medical and Biological Engineering

      Volume: 57 Issue: 2-3 Pages: 49-57

    • DOI

      10.11239/jsmbe.57.49

    • NAID

      130007691681

    • ISSN
      1347-443X, 1881-4379
    • Year and Date
      2019-06-10
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Atrial Infarction-induced Spontaneous Focal Discharges and Atrial Fibrillation in Sheep: Role of Dantrolene-Sensitive Aberrant Ryanodine Receptor Calcium Release.2018

    • Author(s)
      Avula UM, Yamazaki M, Hernandez J, Valdivia C, Chu A, Rojas-Pena A, Kaur K, Ramos-Mondragon R, Anumonwo J, Nattel S, Valdivia H, Kalifa J.
    • Journal Title

      Circ Arrhythm Electrophysiol.

      Volume: in press Issue: 3

    • DOI

      10.1161/circep.117.005659

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Interaction of Phase Singularities on Spiral Wave Tail: Reconsideration of Caputuring Excitable Gap.2018

    • Author(s)
      Tomii N, Yamazaki M, Arafune T, Kamiya K, Nakazawa K, Honjo H, Shibata N, Sakuma I.
    • Journal Title

      Am J Physiol Heart Circ Physiol.

      Volume: in press Issue: 2 Pages: 318-326

    • DOI

      10.1152/ajpheart.00558.2017

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Biobank-driven genomic discovery yields new insight into atrial fibrillation biology.2018

    • Author(s)
      Nielsen JB, Yamazaki M et al.
    • Journal Title

      Nature Genetics

      Volume: 50(9) Issue: 9 Pages: 1234-1239

    • DOI

      10.1038/s41588-018-0171-3

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electrical storm: mechanistic and therapeutic considerations to avoid death in the survivors.2018

    • Author(s)
      Tsuji Y, Dobrev D
    • Journal Title

      J Thorac Dis

      Volume: 10 (Suppl 33) Issue: S33 Pages: S4053-S4056

    • DOI

      10.21037/jtd.2018.09.111

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Possibility of heavy ion irradiation for arrhythmia therapy.2020

    • Author(s)
      Yamazaki M
    • Organizer
      The 59th Annual Conference of Japanese Society for Medical and Biological Engineering/The 11th Asian Pacific Conference on Medical and Biological Engineering
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Anti-arrhythmic effects of heavy ion irradiation in animal AF model.2020

    • Author(s)
      Yamazaki M
    • Organizer
      Heart Rhythm Society’s 40th Annual Scientific Sessions
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 心房細動のメカニズムを探る:光学マッピングで見た心房細動のスパイラルリエントリー2020

    • Author(s)
      山﨑正俊
    • Organizer
      夏のEPフェス:JHRS夏季EPweb講演会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Experimental visualization of rotor as a mechanism of arrhythmia using ex-vivo optical mapping.2020

    • Author(s)
      Yamazaki M
    • Organizer
      The 97th Annual Meeting of the Physiological Society of Japan
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Anti-arrhythmic effects by heavy ion irradiation in animal AF model2019

    • Author(s)
      Yamazaki M
    • Organizer
      Tokyo-Taipei-Seoul Arrhythmia Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Background of Spatio-temporal Dispersion Guided Ablation from Translational Research.2019

    • Author(s)
      Yamazaki M
    • Organizer
      The 66th Annual Meeting of the Japanese Heart Rhythm Society 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 渦巻き型旋回興奮波(Rotor)と心房細動 ~Optical mappingによるExTRa mappingの検証~2019

    • Author(s)
      山崎正俊
    • Organizer
      第66回 日本不整脈心電学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 重粒子線による不整脈抑制メカニズム ~加齢・高脂血症による心房細動発生と重粒子線照射の効果を光学マッピングで診る~2019

    • Author(s)
      山崎正俊
    • Organizer
      第66回 日本不整脈心電学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Spatio-temporal Dispersion of Multipolar Electrogram, a Visually Recognizable Electric Footprint of Rotor during Cardiac Fibrillation.2019

    • Author(s)
      Yamazaki M, Tsuji Y, Tomii N, Arafune T, Honjo H, Kodama I, Sakuma I
    • Organizer
      The 83rd Annual Scientific Meeting of the Japanese Circulation Society
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Spatio-temporal Electrogram Dispersion, a Visually Recognizable Electric Footprint of Rotational Activity during Atrial Fibrillation.2019

    • Author(s)
      Yamazaki M
    • Organizer
      US-Japan (AMED) Workshop on Engineering in Medicine and Biology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Therapeutic Agents to Avoid ICD shocks-associated Worsening Heart Failure2019

    • Author(s)
      Tsuji Y and Yamazaki M
    • Organizer
      The 83rd Annual Scientific Meeting of the Japanese Circulation Society
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Atrial ischemia/infarction-induced spontaneous focal discharges and 3-dimensional atrial scroll wave in an ovine atrial fibrillation model.2018

    • Author(s)
      Yamazaki M
    • Organizer
      The 65th Annual Meeting of the Japanese Heart Rhythm Society
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Rotor dynamics and cardiac fibrillation.2018

    • Author(s)
      Yamazaki M
    • Organizer
      The 2018 International Congress on Electrocardiology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] New mapping Systems for AF Ablation: Rotors and High Density, Tool or Toy?2018

    • Author(s)
      Nakagawa H and Yamazaki M
    • Organizer
      Heart Rhythm Society’s 38th Annual Scientific Sessions
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Late sodium current and ischemic ventricular arrhythmia2018

    • Author(s)
      Honjo H
    • Organizer
      The 11th Asia Pacific Heart Rhythm Society Scientific Session
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] Bioengineering Approaches in Arrhythmia Research

    • URL

      https://www.youtube.com/watch?v=9yXxdRpzwJc

    • Related Report
      2019 Annual Research Report
  • [Remarks] Biomedical Precision Engineering Laboratory

    • URL

      http://www.bmpe.t.u-tokyo.ac.jp/index.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] Department of Bioengineering

    • URL

      http://www.bioeng.t.u-tokyo.ac.jp/faculty/55_yamazaki.html

    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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