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Establishment of novel critical limb ischemia model and application of MR spectroscopy to disaster medical diagnosis

Research Project

Project/Area Number 18K16404
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55030:Cardiovascular surgery-related
Research InstitutionJikei University School of Medicine

Principal Investigator

Ohta Hiroki  東京慈恵会医科大学, 医学部, 講師 (70408376)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords災害医療 / コンパートメント症候群 / 下肢虚血 / MRスペクトロスコピー / 虚血再灌流障害 / 血管造影 / 低侵襲 / マーモセット / 低侵襲血管造影法 / 動物モデル / MRI / 重症下肢虚血モデル / トランスレーショナルリサーチ
Outline of Final Research Achievements

In this study, we developed an angiographic method specifically for small animals and established a minimally invasive and highly reproducible model of lower limb ischemia. Furthermore, we demonstrated the applicability of this technique to disease models such as cerebral infarction and renal failure. Non-invasive diagnosis using MR spectroscopy (MRS) allowed for a detailed analysis of temporal changes in compartment syndrome, employing relevant metabolic parameters. The application of MRS in evaluating tissue metabolic activity will enable early diagnosis of compartment syndrome and the formulation of appropriate treatment plans. The results of this study highlight the importance of developing diagnostic methods using MRS in the field of disaster medicine.

Academic Significance and Societal Importance of the Research Achievements

本研究で成功した小動物用血管造影法の開発は、低侵襲で再現性が高く、脳梗塞や腎不全などの疾患モデルにも応用できることが示された。これにより、さまざまな疾患の研究や治療法の開発に寄与する可能性がある。また、透視下で視認可能なマイクロファイバーの開発により血流遮断の精度が向上しました。この技術は動物実験の信頼性を高めるだけでなく、臨床的な応用にもつながる可能性がある。
またMRスペクトロスコピー法(MRS)を用いた非侵襲的診断法により、コンパートメント症候群の経時的変化を詳細に解析でき、早期診断と適切な治療計画の策定が可能となり、災害医療の現場での診療の向上に繋がることが期待される。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (16 results)

All 2023 2022 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Patent(Industrial Property Rights) (4 results) (of which Overseas: 1 results)

  • [Journal Article] A Novel Rat Model of Embolic Cerebral Ischemia Using a Cell-Implantable Radiopaque Hydrogel Microfiber2023

    • Author(s)
      Komatsu Teppei、Ohta Hiroki、Takakura Naoki、Hata Junichi、Kitagawa Tomomichi、Kurashina Yuta、Onoe Hiroaki、Okano Hirotaka James、Iguchi Yasuyuki
    • Journal Title

      Translational Stroke Research

      Volume: - Issue: 3 Pages: 0-0

    • DOI

      10.1007/s12975-023-01144-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vascular embolization of radiopaque hydrogel microfiber using ultra-minimally invasive technique for stage-adjustable renal failure model2022

    • Author(s)
      Ohta Hiroki、Takakura Naoki、Komatsu Teppei、Kurashina Yuta、Hiroka Yuya、Okano Hirotaka J.、Onoe Hiroaki
    • Journal Title

      Materials & Design

      Volume: 219 Pages: 110802-110802

    • DOI

      10.1016/j.matdes.2022.110802

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Marmoset angiography just by percutaneous puncture of the caudal ventral artery2021

    • Author(s)
      Ohta Hiroki、Komatsu Teppei、Muta Kanako、Koizumi Makoto、Iguchi Yasuyuki、Okano Hirotaka James
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 4 Pages: e0250576-e0250576

    • DOI

      10.1371/journal.pone.0250576

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A novel model of ischemia in rats with middle cerebral artery occlusion using a microcatheter and zirconia ball under fluoroscopy2021

    • Author(s)
      Komatsu Teppei、Ohta Hiroki、Motegi Haruhiko、Hata Junichi、Terawaki Koshiro、Koizumi Makoto、Muta Kanako、Okano Hirotaka James、Iguchi Yasuyuki
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 1-11

    • DOI

      10.1038/s41598-021-92321-w

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Utilizing Dynamic Phosphorous-31 Magnetic Resonance Spectroscopy for the Early Detection of Acute Compartment Syndrome: A Pilot Study on Rats2021

    • Author(s)
      Ohta Hiroki、Vo Nhat-Minh Van、Hata Junichi、Terawaki Koshiro、Shirakawa Takako、Okano Hirotaka James
    • Journal Title

      Diagnostics

      Volume: 11 Issue: 4 Pages: 586-586

    • DOI

      10.3390/diagnostics11040586

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 再生医療実装化を加速する低侵襲血管内アプローチ法とマイクロデバイス2023

    • Author(s)
      太田裕貴
    • Organizer
      日本再生医療学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Development of Ultra-Minimally Invasive Disease Model and novel therapeutic intervention strategies friendly to common marmosets using “Ohta Method”2022

    • Author(s)
      太田裕貴, 小松鉄平, 小泉誠, 牟田佳那子, 岡野ジェイムス洋尚
    • Organizer
      第11回 日本マーモセット研究会大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] CATHETER DELIVERY OF RADIOPAQUE CELL-ENCAPSULATED HYDROGEL MICROFIBERS FOR CELL THERAPY2021

    • Author(s)
      Naoki Takakura, Hiroki Ohta, Teppei Komatsu, Yuta Kurashina, Hirotaka J Okano, Hiroaki Onoe
    • Organizer
      The 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences (uTAS 2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 幹細胞を含有可能な放射線視認性ハイドロゲルマイクロファイバーを用いた新規ラット脳梗塞モデルの開発.2021

    • Author(s)
      小松鉄平,太田裕貴,高倉直輝,北川友通,畑純一,寺脇幸四郎,小泉誠,牟田佳那子,倉科佑太,尾上弘晃,岡野ジェイムス洋尚,井口保之
    • Organizer
      第46回日本脳卒中学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Radiopaque Hydrogel Microfiber for Arterial Embolization.2020

    • Author(s)
      Takakura N, Ohta H, Komatsu T, Kurashina Y, Okano HJ, Onoe H.
    • Organizer
      The 24th International Conference on Miniaturized Systems for Chemistry and Life Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Acute Compartment Syndrome Model in Rats: An Early Evaluation with In Vivo Dynamic 31P-MR Spectroscopy at 9.4 T.2020

    • Author(s)
      Minh Van Nhat Vo, Ohta H, Hata J, Terawaki K, Okano HJ, Shirakawa T.
    • Organizer
      The 5th ISMRM-JPC Annual Scientific Meeting (ISMRM JPC 2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] X線イメージング可能な細胞含有ハイドロゲルマイクロファイバ2019

    • Author(s)
      高倉直樹、太田裕貴、小松鉄平、倉科佑太、岡野ジェイムス洋尚、尾上弘晃
    • Organizer
      第10回日本機械学会
    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] X線不透過マイクロゲルファイバ2020

    • Inventor(s)
      太田裕貴ら
    • Industrial Property Rights Holder
      太田裕貴ら
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report
    • Overseas
  • [Patent(Industrial Property Rights)] 歩行障害検出装置2020

    • Inventor(s)
      太田裕貴,岡野ジェイムス洋尚,大木隆生
    • Industrial Property Rights Holder
      太田裕貴,岡野ジェイムス洋尚,大木隆生
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-196397
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 挫滅症候群の診断補助方法およびそれに使用されるプログラム2020

    • Inventor(s)
      太田裕貴ら
    • Industrial Property Rights Holder
      太田裕貴ら
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-200769
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] X線不透過マイクロゲルファイバ2019

    • Inventor(s)
      太田裕貴
    • Industrial Property Rights Holder
      太田裕貴
    • Industrial Property Rights Type
      特許
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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