• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2015 Fiscal Year Annual Research Report

心室細動における自発的スパイラル波の生成メカニズムの解明

Research Project

Project/Area Number 25610036
Research InstitutionMeiji University

Principal Investigator

二宮 広和  明治大学, 総合数理学部, 教授 (90251610)

Co-Investigator(Kenkyū-buntansha) 稲垣 正司  国立研究開発法人国立循環器病研究センター, 研究所, 室長 (80359273)
上山 大信  明治大学, 総合数理学部, 教授 (20304389)
Project Period (FY) 2013-04-01 – 2016-03-31
Keywords応用数学 / 数理医学 / スパイラル形成 / 自由境界問題
Outline of Annual Research Achievements

これまでの研究から,FitzHugh-Nagumo方程式の特異極限問題として新しい自由境界問題を導出した.この自由境界問題は,これまでに導出されている特異極限問題より,
(1) 活性因子の分布の極限がステップ関数となり,興奮領域の情報だけがとりだせること
(2) wave front interactionモデルと異なり,興奮因子間の相互作用が考慮されていること
(3) 新しい波の生成が行われないこと
などの利点を持っており,数学的解析が容易になった.この方程式の2次元進行スポット解の存在については,昨年度得られたが,これを多次元に拡張した.さらに,この方程式を用いてtipの自発的生成条件を解析的に求め,それを数学的に扱うための数学的基盤整備を行った.障害物は,スパイラル波の生成する役割と消滅する役割の両面をもっている.1つの障害物の形状に関するスパイラル波生成条件をもとに,複数の障害物によるスパイラル波生成条件に関しても調べた.また,上記の利点を活かすことで,1次元興奮波の大域的ダイナミクスを特徴付けることに成功した.多次元空間において興奮波のコアは,渦糸のようになるため,そのダイナミクスを捉えることは一般に難しいが,他の反応拡散系と興奮波系を組み合わせることにより,その動きの可視化にも成功した.

  • Research Products

    (18 results)

All 2016 2015 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Peer Reviewed: 7 results,  Acknowledgement Compliant: 2 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 8 results,  Invited: 4 results)

  • [Int'l Joint Research] National Taiwan University/National Tsing Hua University/Tamkang University(台湾)

    • Country Name
      その他の国・地域
    • Counterpart Institution
      National Taiwan University/National Tsing Hua University/Tamkang University
    • # of Other Institutions
      1
  • [Journal Article] Traveling wave solutions with convex domains for a free boundary problem2016

    • Author(s)
      H. Monobe and H. Ninomiya:
    • Journal Title

      Discrete and continuous dynamical systems. Ser. A

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] A reaction diffusion model for understanding phyllotactic formation2016

    • Author(s)
      Y. Tanaka, M. Mimura and H. Ninomiya
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics

      Volume: 33 Pages: 183-205

    • DOI

      10.1007/s13160-015-0202-8

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Traveling spots on multi-dimensional excitable media2015

    • Author(s)
      Y.-Y. Chen, H. Ninomiya and R. Taguchi:
    • Journal Title

      Journal of Elliptic and Parabolic Equations,

      Volume: 1 Pages: 281-305

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Periodic Breathing in Heart Failure Explained by Dynamic and Static Properties of Respiratory Control2015

    • Author(s)
      T. Miyamoto, H. Nakahara, S. Ueda, K. Manabe, E. Kawai, M. Inagaki, T. Kawada, M. Sugimachi
    • Journal Title

      Clin Med Insights Cardiol.

      Volume: 29-9 Pages: 133-142

    • DOI

      10.4137/CMC.S18761. eCollection 2015

    • Peer Reviewed / Open Access
  • [Journal Article] A novel technique to predict pulmonary capillary wedge pressure utilizing central venous pressure and tissue Doppler tricuspid/mitral annular velocities2015

    • Author(s)
      K. Uemura, M. Inagaki, C. Zheng, M. Li, T. Kawada, M. Sugimachi
    • Journal Title

      Heart Vessels.

      Volume: 30 Pages: 516-526

    • DOI

      10.1007/s00380-014-0525-4

    • Peer Reviewed
  • [Journal Article] Acetylcholine Suppresses Ventricular Arrhythmias and Improves Conduction and Connexin-43 Properties During Myocardial Ischemia in Isolated Rabbit Hearts.2015

    • Author(s)
      T. Aiba, T. Noda, I. Hidaka, M. Inagaki, RG. Katare, M. Ando, K. Sunagawa, T. Sato, M. Sugimachi
    • Journal Title

      J Cardiovasc Electrophysiol

      Volume: 26 Pages: 678-85

    • DOI

      10.1111/jce.12663

    • Peer Reviewed
  • [Journal Article] Maze solving using temperature-induced Marangoni flow2015

    • Author(s)
      P. Lovass, M. Branicki, R. Toth, A. Braun, K. Suzuno, D. Ueyama, and I. Lagzi
    • Journal Title

      RSC Advances

      Volume: 5 Pages: 48563-48568

    • DOI

      10. 1039/C5RA08207B

    • Peer Reviewed
  • [Presentation] Central Donepezil Infusion Prevents Progression of Cardiac Remodeling and Improves Long-term Survival in Chronic Heart Failure Rats with Myocardial Infarction2016

    • Author(s)
      M. Li, C. Zheng, T. Kawada, M. Inagaki, K. Uemura, T. Shishido, M. Sugimachi
    • Organizer
      第80回日本循環器学会学術集会
    • Place of Presentation
      仙台
    • Year and Date
      2016-03-18 – 2016-03-20
    • Int'l Joint Research
  • [Presentation] Obstacle-induced spiral formation in excitable media and ventricular fibrillation2016

    • Author(s)
      H. Ninomiya
    • Organizer
      ALGORITMY, Conference on Scientific Computing,
    • Place of Presentation
      Vysoke Tatry, Podbanske (スロバキア)
    • Year and Date
      2016-03-13 – 2016-03-18
    • Int'l Joint Research / Invited
  • [Presentation] Mechanism of spontaneous spiral formation on heterogeneous discretized excitable media2016

    • Author(s)
      D. Ueyama
    • Organizer
      GDRI ReaDiNet Stochastic PDE's, Large Scale Interacting Systems and Applications to Biology
    • Place of Presentation
      University Paris-Sud and ENSTA(フランス)
    • Year and Date
      2016-03-10 – 2016-03-10
    • Int'l Joint Research / Invited
  • [Presentation] 興奮場の特異極限問題と不整脈への応用2015

    • Author(s)
      二宮広和
    • Organizer
      北大PDEセミナー
    • Place of Presentation
      北海道大学(札幌)
    • Year and Date
      2015-11-30 – 2015-11-30
    • Invited
  • [Presentation] Central donepezil infusion prevents progression of cardiac remodeling and dysfunction in chronic heart failure rats with extensive myocardial infarction2015

    • Author(s)
      M. Li, C. Zheng, T. Kawada, M. Inagaki, K. Uemura, T. Shishido, M. Sugimachi
    • Organizer
      ESC CONGRESS LONDON 2015
    • Place of Presentation
      ロンドン(イギリス)
    • Year and Date
      2015-08-29 – 2015-09-02
    • Int'l Joint Research
  • [Presentation] ドネペジルの早期投与による再灌流心筋梗塞ラットにおける心臓リモデリングの抑制作用2015

    • Author(s)
      李 梅花、鄭 燦、川田 徹、稲垣 正司、上村 和紀、宍戸 稔聡、杉町 勝
    • Organizer
      第36回日本循環制御医学会総会
    • Place of Presentation
      名古屋
    • Year and Date
      2015-06-05 – 2015-06-06
  • [Presentation] Beneficial effects of Central Donepezil Infusion on Cardiac Remodeling in Chronic Heart Failure Rats with Extensive Myocardial Infarction2015

    • Author(s)
      M. Li, C. Zheng, T. Kawada, M. Inagaki, K. Uemura, T. Shishido, M. Sugimachi
    • Organizer
      HAKATA Cardiovascular Conference 2015
    • Place of Presentation
      福岡
    • Year and Date
      2015-05-29 – 2015-05-30
    • Int'l Joint Research
  • [Presentation] Vagus Nerve Stimulation for the Treatment of Heart Failure2015

    • Author(s)
      M. Inagaki, M. Li, M. Sugimachi
    • Organizer
      第79回日本循環器学会学術集会
    • Place of Presentation
      大阪
    • Year and Date
      2015-04-24 – 2015-04-26
    • Int'l Joint Research / Invited
  • [Presentation] Early Donepezil Treatment is Superior to Metoprolol for Preventing Cardiac Remodeling in Reperfused Myocardial Infarction Rats2015

    • Author(s)
      M. Li, C. Zheng, M. Inagaki, K. Uemura, M. Sugimachi
    • Organizer
      第79回日本循環器学会学術集会
    • Place of Presentation
      大阪
    • Year and Date
      2015-04-24 – 2015-04-26
    • Int'l Joint Research
  • [Presentation] Losartan Increases Urine Output and Dose not Affects Thirst and Fluid Consumption in Heart Failure Rats2015

    • Author(s)
      C. Zheng, M. Li, T. Kawada, K. Uemura, M. Inagaki, M. Sugimachi
    • Organizer
      第79回日本循環器学会学術集会
    • Place of Presentation
      大阪
    • Year and Date
      2015-04-24 – 2015-04-26
    • Int'l Joint Research

URL: 

Published: 2017-01-06   Modified: 2022-02-16  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi