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A study on mechanism of mild traumatic brain injury

Research Project

Project/Area Number 19K12782
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionTottori University

Principal Investigator

TAMURA Atsutaka  鳥取大学, 工学研究科, 教授 (30394836)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords軽微な脳損傷 / 脳脊髄液漏出症 / 脊髄硬膜 / 二軸引張 / コンタクトスポーツ / 脳脊髄液減少症
Outline of Research at the Start

申請者は髄液の漏出に伴う脳の下垂が脳組織と頭蓋底との直接的な接触をもたらし,痛みに繋がるのではないかと予想しており,本研究ではこの仮説の検証に挑む.具体的には脊髄硬膜の材料強度を力学実験で精確に把握するとともに,組織内の線維配向がその微視的な破壊プロセスに及ぼす影響を明らかにする.同時に計測データを反映した有限要素モデルを活用して流体(髄液)と構造(脊髄)の連成を考慮した傷害解析を行う.本研究は脳脊髄液減少症から軽微な脳損傷さらには重篤な頭部外傷に至る機序を初めて関連づけるものと言える.

Outline of Final Research Achievements

The dura mater is the thick and outermost layer and is the strongest membrane among the spinal meninges. Thus, mechanical failure of the dura mater can lead to spontaneous cerebrospinal fluid leaks or hypovolemia, resulting in a complication or exacerbation of unfavorable symptoms involved in a mild traumatic brain injury. In this study, we employed a custom equiload biaxial tensile tester to investigate the mechanical properties of porcine meningeal dura mater along the whole length of the spine. The resultant strain of the dorsal side was greater than that of the ventral side (P < 0.01), while the circumferential direction was significantly stiffer than the longitudinal direction (P < 0.01) at lower strains regardless of the spinal level. Further, Young’s modulus was significantly less on the dorsal side than on the ventral side at higher strains (P < 0.05), suggesting that the dorsal side is readily elongated by spinal flexion even within the range of physiological motion.

Academic Significance and Societal Importance of the Research Achievements

脳脊髄液漏出症の受傷メカニズムは解明されておらず,有効な対策や効果的な治療法は未だ確立されていない.そのため,脳脊髄液漏出症の予防には依然として多くの課題が残されているのが現状である.しかしながら,人体有限要素モデルを活用し,現実の事故を忠実に模擬した衝突解析を実行することができれば,今まで原因不明とされてきた脊髄硬膜の損傷メカニズムを解明する糸口を掴めるのではないかと期待される.本研究で得られた成果は数値解析に直接応用可能であり,近い将来,脳脊髄液漏出症の受傷メカニズム解明に大いに寄与するものと考えられる.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (27 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (17 results) (of which Int'l Joint Research: 1 results) Remarks (2 results)

  • [Int'l Joint Research] Wayne State University(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Effect of anatomical sites on the mechanical properties of spinal dura subjected to biaxial stretching2022

    • Author(s)
      Atsutaka Tamura, Soichiro Nishikawa
    • Journal Title

      Journal of Engineering and Science in Medical Diagnostics and Therapy

      Volume: 5 Issue: 1 Pages: 011008-011008

    • DOI

      10.1115/1.4053341

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A study of the nerve root damage in whiplash injury occurrence mechanisms using human head-neck finite element model2021

    • Author(s)
      Junji Hasegawa, Atsutaka Tamura, Naoyuki Kubota
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 87 Issue: 900 Pages: 21-00103-21-00103

    • DOI

      10.1299/transjsme.21-00103

    • NAID

      130008078058

    • ISSN
      2187-9761
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Finite element model of a cultured vascular smooth muscle cell subjected to uniaxial stretch: Effect of orientation angle of stress fibers on biomechanical responses2021

    • Author(s)
      Atsutaka Tamura、Kei Makabe、Hatsune Yamashita、Jun-ichi Hongu
    • Journal Title

      Proc. ASME. IMECE2021

      Volume: 5

    • DOI

      10.1115/imece2021-68844

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modeling elastic lamina buckling in the unloaded aortic media2021

    • Author(s)
      TAMURA Atsutaka、KATO Yuya、MATSUMOTO Koki
    • Journal Title

      Mechanical Engineering Journal

      Volume: 8 Issue: 1 Pages: 20-00277-20-00277

    • DOI

      10.1299/mej.20-00277

    • NAID

      130007986847

    • ISSN
      2187-9745
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanical characterization of spinal dura using a PD-controlled biaxial tensile tester2020

    • Author(s)
      TAMURA Atsutaka、YANO Wataru、YOSHIMURA Daichi、NISHIKAWA Soichiro
    • Journal Title

      Journal of Mechanics in Medicine and Biology

      Volume: 20 Issue: 05 Pages: 2050023-2050023

    • DOI

      10.1142/s0219519420500232

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Modeling of elastic lamina buckling coupled with smooth muscle layer deformation in the aortic media: technique for readily implementing residual stresses2020

    • Author(s)
      TAMURA Atsutaka、KATO Yuya、MATSUMOTO Koki
    • Journal Title

      Journal of Biomechanical Science and Engineering

      Volume: 15 Issue: 4 Pages: 20-00324-20-00324

    • DOI

      10.1299/jbse.20-00324

    • NAID

      130007937544

    • ISSN
      1880-9863
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Modelling traumatic brain injury in pedestrian involved in backover collisions2020

    • Author(s)
      TAMURA Atsutaka、YANG King H.
    • Journal Title

      International Journal of Vehicle Safety

      Volume: 11 Issue: 3 Pages: 229-229

    • DOI

      10.1504/ijvs.2020.109271

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 脊髄硬膜の表面形状計測および微小圧子による押込試験2022

    • Author(s)
      坂上千佳乃, 本宮潤一, 田村篤敬
    • Organizer
      日本機械学会中国四国支部第60期総会・講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 二軸引張を受けた脊髄硬膜コラーゲン線維の変形挙動観察2022

    • Author(s)
      西川蒼一郎, 本宮潤一, 田村篤敬
    • Organizer
      日本機械学会中国四国支部第60期総会・講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 内圧負荷を考慮した大動脈血管壁の数値モデリング2022

    • Author(s)
      松本昂暉, 本宮潤一, 田村篤敬
    • Organizer
      日本機械学会中国四国支部第60期総会・講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 後突プリクラッシュフェーズにおける頸部筋の緊張に関する基礎検討2022

    • Author(s)
      上村春貴, 本宮潤一, 田村篤敬
    • Organizer
      日本機械学会中国四国学生会第52回学生員卒業研究発表講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 血管平滑筋細胞の配向方向がストレスファイバーの張力に及ぼす影響2022

    • Author(s)
      田邉康裕, 田村篤敬
    • Organizer
      日本機械学会中国四国学生会第52回学生員卒業研究発表講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 数値シミュレーションを用いたアフリカツメガエル胚の機械的特性に関する検討2022

    • Author(s)
      磯部友誠, 松本健郎, 田村篤敬
    • Organizer
      日本機械学会中国四国学生会第52回学生員卒業研究発表講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 血管中膜のリングモデル:血管壁内の残留応力と弾性板座屈の関係2022

    • Author(s)
      松本昂暉, 田村篤敬
    • Organizer
      日本機械学会第32回バイオフロンティア講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Finite element model of a cultured vascular smooth muscle cell subjected to uniaxial stretch: Effect of orientation angle of stress fibers on biomechanical responses2021

    • Author(s)
      Atsutaka Tamura, Kei Makabe, Hatsune Yamashita, Jun-ichi Hongu
    • Organizer
      ASME 2021 International Mechanical Engineering Congress & Exposition
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 脊髄硬膜の二軸引張試験2021

    • Author(s)
      西川蒼一郎, 本宮潤一, 田村篤敬
    • Organizer
      日本機械学会 2021年度年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 押込試験装置を活用した生体組織の表面形状計測2021

    • Author(s)
      坂上千佳乃, 田村篤敬
    • Organizer
      日本機械学会中国四国学生会第51回学生員卒業研究発表講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] マイクロインデンテーションによるブタ脊髄の粘弾性特性評価2021

    • Author(s)
      矢野航, 濱田初幸, 河鰭 一彦, 本宮潤一, 田村篤敬
    • Organizer
      日本機械学会中国四国支部第59期総会・講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 解剖学的部位が脊髄硬膜の力学特性に及ぼす影響2021

    • Author(s)
      西川蒼一郎, 本宮潤一, 田村篤敬
    • Organizer
      日本機械学会中国四国支部第59期総会・講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] マイクロインデンテーション試作機を活用したブタ脊髄の力学特性評価2020

    • Author(s)
      矢野航, 濱田初幸, 河鰭一彦, 田村篤敬
    • Organizer
      日本機械学会2020年度年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 非対称な二軸引張負荷が脊髄硬膜の力学応答に及ぼす影響2020

    • Author(s)
      西川蒼一郎, 本宮潤一, 田村篤敬
    • Organizer
      日本機械学会第31回バイオフロンティア講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 等荷重二軸引張を受けたブタ脊髄硬膜に関する基礎的検討2020

    • Author(s)
      西川蒼一郎,田村篤敬
    • Organizer
      日本機械学会 中国四国学生会 第50回学生員卒業研究発表講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 生体軟組織の力学特性評価を目指した押込試験装置の開発2020

    • Author(s)
      矢野航,田村篤敬
    • Organizer
      日本機械学会 中国四国支部 第58期総会・講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] PD制御を活用した等荷重二軸引張試験装置の開発2019

    • Author(s)
      矢野航,吉村大地,本宮潤一,田村篤敬
    • Organizer
      日本機械学会 第30回バイオフロンティア講演会
    • Related Report
      2019 Research-status Report
  • [Remarks] 鳥取大学 研究者詳細

    • URL

      http://researchers.adm.tottori-u.ac.jp/html/100001154_ja.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] 鳥取大学工学部附属 先進機械電子システム研究センター

    • URL

      http://www.ames.eng.tottori-u.ac.jp/tamura.html

    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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