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Establishment of collagen selective treatment of fibrotic organs by ultrasound

Research Project

Project/Area Number 21K18084
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 90130:Medical systems-related
Research InstitutionTokyo Metropolitan University

Principal Investigator

Yagi Ippei  東京都立大学, システムデザイン研究科, 助教 (30884150)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Discontinued (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords線維症 / コラーゲン線維 / 超音波 / 柔軟化 / キャビテーション / 線維化 / 治療デバイス / コラーゲン選択性 / 繊維化
Outline of Research at the Start

線維症の組織に対して超音波キャビテーションによる柔軟性の改善効果を検証する。線維症は、コラーゲン繊維の異常な蓄積により臓器が弾性を失い、生命機能を低下する疾患群である。これは先進国の死因の45%に関連があり、根本的な治療薬がない未解決の医療問題である。一方、超音波により発生するキャビテーション現象は、ミクロな気泡の膨張・収縮過程で局所的に高圧場を生み出す。本現象を利用して体内のコラーゲン線維を機械的に切断する事により、組織の柔軟性を回復させる。本研究を通じて線維症の新たな治療法を提案し、世界初となる体外・低侵襲治療デバイスの実現を図る。

Outline of Final Research Achievements

The prototype of the therapeutic device and verification of the principle in animal tissues have been completed, and the goal of verification at the tissue level has been achieved. Since further animal experiments are beyond the scope of this research project, we would like to move up this research period by one year and proceed with subsequent research under Grant-in-Aid for Scientific Research (KAKENHI) Basic B starting in FY2023, based on the previous year's application. Research results have been reported through 5 refereed papers, 2 commentary articles, 2 international conferences, and 10 domestic conferences.

Academic Significance and Societal Importance of the Research Achievements

本研究は、電気工学的手法を用いた低侵襲治療を開発し、線維化治療の新しいアプローチを提供しました。これにより、患者の負担を軽減し、治療効果の向上が期待されます。具体的には、超音波によるキャビテーションや加熱・牽引技術で組織の柔軟性を改善し、機能回復を促進します。また、難治性食道狭窄の治療に応用し、治療デバイスの効果を豚の食道組織で確認しました。これにより、患者の生活の質向上や医療費削減が見込まれます。研究成果は広く報告され、国際特許出願も行われており、技術の普及と進展が期待されます。この研究は線維化治療に革新的な進展をもたらし、多くの患者に貢献する可能性があります。

Report

(3 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Research-status Report
  • Research Products

    (19 results)

All 2023 2022 2021

All Journal Article (7 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (10 results) (of which Int'l Joint Research: 1 results) Patent(Industrial Property Rights) (2 results) (of which Overseas: 1 results)

  • [Journal Article] Technology Trends in Ultrasound Therapy2023

    • Author(s)
      YAGI Ippei
    • Journal Title

      The Journal of The Institute of Electrical Engineers of Japan

      Volume: 143 Issue: 7 Pages: 408-411

    • DOI

      10.1541/ieejjournal.143.408

    • ISSN
      1340-5551, 1881-4190
    • Year and Date
      2023-07-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanical changes in fibrous tissue exposed to non-convergent ultrasound2023

    • Author(s)
      Ippei Yagi, Kazuki Koike, Satoshi Uchida
    • Journal Title

      IEEJ Transactions on Electrical and Electronic Engineering

      Volume: 18(9) Issue: 9 Pages: 1482-1486

    • DOI

      10.1002/tee.23866

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Synergistic effects of heating and traction during fibrous tissue elongation2023

    • Author(s)
      YAGI Ippei、KOIKE Kazuki、UCHIDA Satoshi
    • Journal Title

      Journal of Biomechanical Science and Engineering

      Volume: 18 Issue: 2 Pages: 22-00379-22-00379

    • DOI

      10.1299/jbse.22-00379

    • ISSN
      1880-9863
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Correlation between Mechanical Properties and Collagen Degeneration in Fibrous Tissue2023

    • Author(s)
      Ippei Yagi, Kazuki Koike, Eiko Kato, Satoshi Uchida, Takaaki Kakihana, Hironori Sunakawa
    • Journal Title

      45th Annual International Conference of the IEEE Engineering in Medicine & Biology Society

      Volume: - Pages: 1257-1261

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 線維症治療を目指して -超音波キャビテーションの可能性-2021

    • Author(s)
      八木一平
    • Journal Title

      静電気学会誌

      Volume: Vol.45, No.3 Pages: 98-99

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Basic study of dielectric properties of cancer cells by dielectrophoretic velocimetry2021

    • Author(s)
      Yutong Guo,Ippei Yagi,Satoshi Uchida,Fumiyoshi Tochikubo,Masayo Takano,Yoshikazu Wakizaka,Takaharu Enjoji
    • Journal Title

      Electron Comm Jpn.

      Volume: 104 Issue: 2

    • DOI

      10.1002/ecj.12318

    • NAID

      210000178462

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Basic verification of cancer cell separation characteristics in a dielectrophoretic device using microcylindrical electrodes2021

    • Author(s)
      Hideo Miyamukai, Ippei Yagi, Satoshi Uchida, Masayo Takano, Yoshikazu Wakizaka, Takaharu Enjoji
    • Journal Title

      Electron Comm Jpn.

      Volume: 104 Issue: 4

    • DOI

      10.1002/ecj.12328

    • NAID

      210000178592

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 線維症病変の新規治療技術の検討2023

    • Author(s)
      佐藤廉, 加藤英子, 八木一平, 内田諭, 砂川弘憲, 柿花隆昭
    • Organizer
      2023年度静電気学会春期講演会, 2023-3
    • Related Report
      2022 Annual Research Report
  • [Presentation] 局所加熱による線維性組織の機械特性変化2023

    • Author(s)
      小池一輝, 加藤英子, 八木一平, 内田諭
    • Organizer
      2023年度静電気学会春期講演会, 2023-3
    • Related Report
      2022 Annual Research Report
  • [Presentation] 加熱・牽引による線維性組織の柔軟・伸長効果,2022

    • Author(s)
      八木一平, 小池一輝, 内田諭
    • Organizer
      第54回日本結合組織学会学術大会, O2-2, P37, 2022-6
    • Related Report
      2022 Annual Research Report
  • [Presentation] 加熱・牽引による線維性組織の柔軟化の検討2022

    • Author(s)
      八木一平, 小池一輝, 内田諭
    • Organizer
      第 61 回日本生体医工学会大会, O1-2-2-5, 2022-6
    • Related Report
      2022 Annual Research Report
  • [Presentation] 808 nm 半導体レーザー加熱による線維性組織の熱変性特性,2022

    • Author(s)
      小池一輝, 八木一平, 内田諭
    • Organizer
      第 46 回静電気学会全国大会, 8pC-2, 2022-9
    • Related Report
      2022 Annual Research Report
  • [Presentation] 線維性組織における機械特性とコラーゲン変性の関係2022

    • Author(s)
      八木一平, 小池一輝, 加藤英子, 内田諭, 柿花隆昭, 砂川弘憲
    • Organizer
      第33回バイオフロンティア講演会, 1C06, 2022-12
    • Related Report
      2022 Annual Research Report
  • [Presentation] 線維性組織における熱および牽引の相乗効果の検討2022

    • Author(s)
      小池一輝, 内田諭, 八木一平
    • Organizer
      2022年電子情報通信学会総合大会, A-4-3, 2022-3
    • Related Report
      2022 Annual Research Report
  • [Presentation] 線維性組織における熱および牽引の相乗効果の検討2022

    • Author(s)
      小池一輝, 内田諭, 八木一平
    • Organizer
      2022年電子情報通信学会総合大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Softening connective tissue using ultrasound cavitation2021

    • Author(s)
      Ippei Yagi, Satoshi Uchida
    • Organizer
      20th Annual International Symposium for Therapeutic Ultrasound
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超音波キャビテーションによる軟部組織の柔軟化(Ⅲ)コラーゲン変性の要素検討2021

    • Author(s)
      小池一輝, 内田諭, 八木一平
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] コラーゲン分解装置およびコラーゲン分解装置の作動方法2022

    • Inventor(s)
      八木一平
    • Industrial Property Rights Holder
      八木一平
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] 超音波と特定波長の照射による軟部組織コラーゲンの選択的分解方法2021

    • Inventor(s)
      八木一平
    • Industrial Property Rights Holder
      八木一平
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-102278
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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