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

Synergistic effects of artificial nerve conduit transplantation and therapeutic ultrasound on peripheral nerve injury

Research Project

Project/Area Number 19K19793
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 59010:Rehabilitation science-related
Research InstitutionKyoto University

Principal Investigator

ITO Akira  京都大学, 医学研究科, 助教 (50762134)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords超音波 / 物理療法 / 理学療法 / 末梢神経損傷 / リハビリテーション / 末梢神経 / 再生 / メカニカルストレス
Outline of Research at the Start

理学療法などによるメカニカルストレスの負荷や調整が、移植された細胞の生着・増殖・分化・機能化を促進させる“治療”として作用する可能性が報告されるようになった。しかしながら、細胞移植後にどのようなメカニカルストレスを負荷すればよいのか、さらにはその背景にある作用メカニズムについては不明な点が多く、実験動物を用いた基礎的なデータの蓄積が必須である。超音波治療は、これまで様々な組織において再生促進効果が報告されている。本研究では、申請者らが開発した人工神経導管移植術と超音波治療によるメカニカルストレス負荷の相乗治療効果を検証し、その作用メカニズムの解明に挑む。

Outline of Final Research Achievements

In order to improve artificial nerve conduits to promote peripheral nerve regeneration, we attempted to create a nerve conduit using a three-dimensional bioprinter. Using bioink containing alginate and nanocellulose and gelatin methacrylate, we were able to form a cylindrical shape with an inner diameter of 2.5 mm. The cell viability of the sculpted nerve conduits was checked, and the viability decreased to about 50% until 3 days after incubation, after which a recovery trend was observed.
Next, we examined the changes in the expression of neurotrophic factors by ultrasound stimulation. As a result, it was suggested that increased expression of brain-derived neurotrophic factor was involved as one of the mechanisms of action of ultrasound therapy in peripheral nerve regeneration.

Academic Significance and Societal Importance of the Research Achievements

本研究では、三次元バイオプリンターを用いた細胞含有神経導管の作成に成功した。これは末梢神経再生医療の発展における基盤となる成果となる。また、超音波治療による末梢神経再生に寄与する作用メカニズムとして、脳由来神経栄養因子の発現上昇の関与を示唆し、さらにその経時的変化を明らかにした。この成果は、超音波治療の開始時期や継続期間の設定におけるエビデンスを提供する。

Report

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

    (12 results)

All 2021 2020 2019 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 3 results) Remarks (2 results)

  • [Journal Article] Low-Intensity Pulsed Ultrasound Prompts Both Functional and Histologic Improvements While Upregulating the Brain-Derived Neurotrophic Factor Expression after Sciatic Crush Injury in Rats2021

    • Author(s)
      Wang T, Ito A, Xu S, Kawai H, Kuroki H, Aoyama T.
    • Journal Title

      Ultrasound Med Biol.

      Volume: Epub Issue: 6 Pages: 1586-1595

    • DOI

      10.1016/j.ultrasmedbio.2021.02.009

    • NAID

      120007052719

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrasound therapy with optimal intensity facilitates peripheral nerve regeneration in rats through suppression of pro-inflammatory and nerve growth inhibitor gene expression2020

    • Author(s)
      Ito A, Wang T, Nakahara R, Kawai H, Nishitani K, Aoyama T, Kuroki H.
    • Journal Title

      PLoS One

      Volume: 15 Issue: 6 Pages: e0234691-e0234691

    • DOI

      10.1371/journal.pone.0234691

    • NAID

      120006867161

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3D Kinematic Analysis for the Functional Evaluation in the Rat Model of Sciatic Nerve Crush Injury2020

    • Author(s)
      Wang T, Ito A, Tajino J, Kuroki H, Aoyama T
    • Journal Title

      J. Vis. Exp

      Volume: 156 Issue: 156

    • DOI

      10.3791/60267

    • NAID

      120006870866

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-dimensional motion analysis for evaluating motor function in rodents with peripheral nerve injury2019

    • Author(s)
      Ito Akira、Tianshu Wang、Tajino Junichi
    • Journal Title

      Neural Regeneration Research

      Volume: 14 Issue: 12 Pages: 2077-2077

    • DOI

      10.4103/1673-5374.262581

    • NAID

      120006867157

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ラット坐骨神経挫滅損傷モデルに対する超音波刺激効果のメカニズム検証‐遺伝子発現の経時的変化に着目して.2020

    • Author(s)
      伊藤明良,王天舒,徐仕軒,青山朋樹,黒木裕士.
    • Organizer
      第25回日本基礎理学療法学会学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 坐骨神経挫滅損傷モデルラットに対する運動機能回復促進に最適な超音波照射開始時期の検証.2020

    • Author(s)
      河合秀紀,伊藤明良,王天舒,中畑晶博,中原崚,徐仕軒,青山朋樹,黒木裕士.
    • Organizer
      第25回日本基礎理学療法学会学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Three-dimensional analysis to evaluate effects of rehabilitation and cell therapy on functional motor recovery after peripheral nerve injury in rodents.2019

    • Author(s)
      Ito A, Aoyama T, Tajino J, Kuroki H.
    • Organizer
      13th International Society of Physical and Rehabilitation Medicine World Congress
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Both functional and histological recovery are not completed within six weeks after sciatic nerve crush injury: a comprehensive 3D kinematic analysis on rats.2019

    • Author(s)
      Tianshu Wang, Akira Ito, Ryo Nakahara, Akihiro Nakahata, Jue Zhang, Hideki Kawai, Naoko Kubo, Hiroshi Kuroki, Tomoki Aoyama.
    • Organizer
      Eighth Annual International Symposium on Regenerative Rehabilitation
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Kinematic Analysis for Understanding Functional Changes Over Time and Correlations between Functional and Histomorphometric Data Following Sciatic Nerve Crush Injury in Rats.2019

    • Author(s)
      Tianshu Wang, Akira Ito, Ryo Nakahara, Akihiro Nakahata, Xiang Ji, Jue Zhang, Hideki Kawai, Naoko Kubo, Hiroshi Kuroki, Tomoki Aoyama.
    • Organizer
      13th International Society of Physical and Rehabilitation Medicine World Congress
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] ラット坐骨神経挫滅損傷モデルに対する超音波刺激効果検証.2019

    • Author(s)
      伊藤明良,王天舒,中原崚,中畑晶博,張ジュエ,河合秀紀,久保菜央子,新家佑基,青山朋樹,黒木裕士.
    • Organizer
      第24回日本基礎理学療法学会学術大会
    • Related Report
      2019 Research-status Report
  • [Remarks] 京都大学大学院医学研究科人間健康科学系リハビリテーション科学コース運動機能解析学分野

    • URL

      https://kuroki-lab.hs.med.kyoto-u.ac.jp/

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
  • [Remarks] 京都大学再生リハビリテーションユニット

    • URL

      http://regenerative-rehabilitation.com/jp/

    • Related Report
      2020 Annual Research Report 2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi