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Effect of basic fibroblast growth factor injection on peripheral nerve injury at the watershed zone in a rat model

Research Project

Project/Area Number 19K09612
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionToho University

Principal Investigator

Ochi Kensuke  東邦大学, 医学部, 研究員 (70445203)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords末梢神経 / 神経損傷 / 神経虚血 / 神経内血流 / bFGF / bFGF / 末梢神経再生促進 / 難治性末梢神経障害
Outline of Research at the Start

ヒト末梢神経内部には血流量に乏しい「分水嶺」が存在するという新知見を見出した筆者は、従来の治療法に「分水嶺部の血流改善」という要素を加えることで、難治性末梢神経障害に対する新規治療法を開発できるのではないかと着想した。ラット急性神経損傷モデルの損傷神経に対して神経剥離術と分水嶺内血管新生因子注入を併用したところ、神経機能回復が有意に促進された。本研究の目的は上記急性神経障害モデルに対する研究を完成させると同時に、慢性神経障害モデルに対しても同様の検証を加えることにより、難治性末梢神経障害に対す新規治療法開発とその機序解明の基盤とすることである。

Outline of Final Research Achievements

Nerve blood flow plays a crucial role in the recovery of traumatic nerve injury, and the longitudinal distribution of nerve blood flow along the length of peripheral nerves was not uniform. Well defined watershed areas of nerve blood flow were observed at lower-thigh level of rat sciatic and tibial nerves. In bFGF group, mechanical sensation thresholds of von Frey test were significantly elevated compared to PBS and Clip groups at all time-points after crush injury. bFGF group showed a significantly faster recovery of motor nerve conduction velocity in sciatic-tibial nerves than those in PBS and Clip groups, although none of rats in bFGF, PBS and Clip groups showed a full recovery of nerve conductions. bFGF therapy is a potent candidate for treatment of traumatic nerve injury at the watershed zone of nerve blood flow along the proximal-distal extent of nerve, with a potential of enhanced nerve regeneration via angiogenic and neurotrophic factors.

Academic Significance and Societal Importance of the Research Achievements

「神経内分水嶺内部への血管新生因子注入は、損傷神経の再生を促進させる」ことが初めて実証されたことは学術的に極めて意義深い。またこの効果は神経内への血管新生因子注入のみならず、神経外への血管新生因子注入でも獲得されることが示唆されたことは本法を臨床応用する上で大きな進捗であった。ヒトの各種難治性末梢神経障害に対する有効な新規治療法開発の目処がついたことから、その社会的意義も極めて大きいと考えている。

Report

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

    (7 results)

All 2023 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] Effect of basic fibroblast growth factor injection on peripheral nerve injury at the watershed zone in a rat model2023

    • Author(s)
      Ariizumi T, Nukada H, Ochi K, et al.
    • Journal Title

      J Oral Maxil Surg Med Pathol

      Volume: 35 Issue: 2 Pages: 123-128

    • DOI

      10.1016/j.ajoms.2022.08.014

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Possible guarded prognosis for childhood-onset spontaneous posterior interosseous nerve palsy: two case reports2021

    • Author(s)
      Kensuke Ochi, Atsuhito Seki
    • Journal Title

      Possible guarded prognosis for childhood-onset spontaneous posterior interosseous nerve palsy: two case reports

      Volume: 47 Issue: 3 Pages: 329-332

    • DOI

      10.1177/17531934211039180

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nurse-like cells in rheumatoid arthritis: Formation of survival niches cooperating between the cell types2019

    • Author(s)
      Ochi T, Sawai T, , Ochi K. et al.
    • Journal Title

      Mod Rheumatol.

      Volume: 29 Issue: 3 Pages: 401-405

    • DOI

      10.1080/14397595.2018.1483305

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 外傷性末梢神経障害に対する超音波ガイド下ハイドロリリースの有効性2020

    • Author(s)
      山崎梓、堀田亮太郎、越智健介、八木橋操六、額田均、穴澤卯圭、高野正行
    • Organizer
      日本口腔外科学会関東支部学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Early Results of a Multicenter Prospective Study of Spontaneous Anterior and Posterior Interosseous Nerve Palsy2019

    • Author(s)
      Ochi K., Kato H., iNPS-JAPAN study group
    • Organizer
      74th American Society for Surgery of the Hand
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Preliminary Results from Japanese Multicenter Study for Spontaneous Anterior Interosseous Nerve Palsy and Posterior Interosseous Nerve Palsy (iNPS-JAPAN)2019

    • Author(s)
      Ochi K., Kato H., iNPS-JAPAN study group
    • Organizer
      第62回日本手外科学会学術集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 特発性前骨間神経麻痺と特発性後骨間神経麻痺の特徴2019

    • Author(s)
      越智健介, 加藤博之, 堀内行雄, 額田均
    • Organizer
      第29回日本末梢神経学会
    • Related Report
      2019 Research-status Report
    • Invited

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Published: 2019-04-18   Modified: 2024-01-30  

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