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細胞サスペンジョン力学による医工学研究の新展開

Research Project

Project/Area Number 22300149
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomedical engineering/Biological material science
Research InstitutionTohoku University

Principal Investigator

石川 拓司  Tohoku University, 工学(系)研究科(研究院), 准教授 (20313728)

Project Period (FY) 2010 – 2014
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2011: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2010: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords生体流体力学 / 数値解析 / 血液 / 微生物 / レオロジー
Research Abstract

本研究課題では,実験・理論解析・数値シミュレーションを駆使することで,細胞間の多体干渉現象および複雑流路内での振舞いを新たに解明し,まず始めに細胞サスペンジョン力学を確立することを目的とする.そして細胞サスペンジョン力学を応用し,従来の手法では議論が困難な生命システムを定量的に解明する.これにより,従来は経験的・定性的な議論に留まっていた医工学の分野に,ブレークスルーを生み出すことを目的とする.本年度は主に以下の2つの研究課題を遂行した.
1.細胞間の多体干渉モデルの構築
微生物の2体干渉現象を多体間に拡張し,まず始めに遊泳微生物がどのようなメゾスケール流動構造を示すか実験的に調べた.微生物には大腸菌を用い,共焦点マイクロPIVシステムを用いて高濃度溶液内の大腸菌の運動,および周囲流体の流動を計測した.次に,高濃度バクテリア溶液に対する数理モデルを構築した.本研究では球形以外の形状を取り扱えるよう従来の計算コードを改良し,高濃度バクテリア溶液の数理モデルを提案した.赤血球に対しては,我々の開発してきた境界要素法を赤血球に拡張し,高濃度赤血球サスペンジョンに対する高精度な数理モデルを構築した.
2.複雑流路内の細胞サスペンジョン流動の解明
血液にごく少量のがん細胞を混入し,狭さく部や分岐・合流部における挙動を調べた.そしてがん細胞の軸集中や壁面への集中など,力学的なに引き起こされる特異な流動現象を解明した.次に,開発した多体干渉を表現できる細胞サスペンジョンモデルを用い,実験に対応する複雑流路内の流れのシミュレーションを行った.そしてシミュレーション結果と実験結果を比較検討することにより,信頼性の高い細胞サスペンジョンシミュレータを開発した.

Report

(1 results)
  • 2010 Annual Research Report
  • Research Products

    (14 results)

All 2011 2010 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (3 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Patient-specific modeling of pulmonary air flow using GPU cluster for the application in medical practice2011

    • Author(s)
      T.Miki, X.Wang, T.Aoki, Y.Imai, T.Ishikawa, K.Takase, T.Yamaguchi
    • Journal Title

      Computer Methods in Biomechanics and Biomedical Engineering

      Volume: 14

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A High-order Cartesian Local Mesh Refinement (LMR) Method for the Computational Fluid Dynamics of Physiological Flow in Multi-generation Branched Vessel2011

    • Author(s)
      T.Miki, Y.Imai, T.Ishikawa, S.Wada, T.Aoki, T.Yamaguchi
    • Journal Title

      International Journal for Numerical Methods in Biomedical Engineering

      Volume: 27 Pages: 424-435

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Blood flow and cancer cell adhesion in a microchannel with bifurcation and confluence2011

    • Author(s)
      T.Ishikawa, H.Fujiwara, N.Matsuki, Y.Imai, H.Ueno, T.Yamaguchi
    • Journal Title

      Biomedical Microdevices

      Volume: 13 Pages: 159-167

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fluid particle diffusion through high-hematocrit blood flow within a capillary tube2011

    • Author(s)
      M.Saadatmand, T.Ishikawa, N.Matsuki, M.J.Abdekhodaie, Y.Imai, H.Ueno, T.Yamaguchi
    • Journal Title

      Journal of Biomechanics

      Volume: 44 Pages: 170-175

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Patient-specific morphological and blood flow analysis of pulmonary artery in the case of severe deformations of the lung due to pneumothorax2010

    • Author(s)
      J-J.Christophe, T.Ishikawa, N.Matsuki, Y.Imai, K.Takase, M.Thiriet, T.Yamaguchi
    • Journal Title

      Journal of Biomechanical Science and Engineering

      Volume: 5 Pages: 485-498

    • NAID

      130000422532

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrodynamic entrapment of bacteria swimming near a solid surface2010

    • Author(s)
      D.Giacche, T.Ishikawa, T.Yamaguchi
    • Journal Title

      Physical Review E

      Volume: 82

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrodynamic interaction of two unsteady model microorganisms2010

    • Author(s)
      D.Giacche, T.Ishikawa
    • Journal Title

      Journal of Theoretical Biology

      Volume: 267 Pages: 252-263

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Designing a clinical education program for engineers : The ESTEEM Project2010

    • Author(s)
      N.Matsuki, M.Takeda, M.Yamano, Y.Imai, T.Ishikawa, T.Yamaeuchi
    • Journal Title

      Journal of Interprofessional Care

      Volume: 24 Pages: 738-741

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fluid particle diffusion in a semi-dilute suspension of model micro-organisms2010

    • Author(s)
      T.Ishikawa, J.T.Locsei, T.J.Pedley
    • Journal Title

      Physical Review E

      Volume: 82

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Hydrodynamic interaction of two unsteady squirmers2010

    • Author(s)
      T.Ishikawa
    • Organizer
      Bulletin of the American Physical Society, DFD 2010
    • Place of Presentation
      米国,ロングビーチ
    • Year and Date
      2010-11-22
    • Related Report
      2010 Annual Research Report
  • [Presentation] ISuspension biomechanics of swimming micro-organisms2010

    • Author(s)
      T.Ishikawa
    • Organizer
      KIST-Tohoku Joint Symp.Nanobiomed.Eng.
    • Place of Presentation
      韓国,ソウル
    • Year and Date
      2010-08-04
    • Related Report
      2010 Annual Research Report
  • [Presentation] Blood flow and cancer cell adhesion in a microchannel with bifurcation and confluence2010

    • Author(s)
      T.Ishikawa
    • Organizer
      17th Congress of the European Society of Biomec hanics, ESB2010
    • Place of Presentation
      英国,グラスゴー
    • Year and Date
      2010-07-05
    • Related Report
      2010 Annual Research Report
  • [Book] Handbook of Physics in Medicine and Biology, Chapter 17 "Fluid dynamics"2010

    • Author(s)
      T.Ishikawa (Eds.Robert Splinter)
    • Total Pages
      548
    • Publisher
      CRC Press
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.pfsl.mech.tohoku.ac.jp/

    • Related Report
      2010 Annual Research Report

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Published: 2010-08-23   Modified: 2016-04-21  

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