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

Research and development of sheet scaffold for meniscal repair

Research Project

Project/Area Number 20K09418
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionOsaka Medical and Pharmaceutical University

Principal Investigator

Otsuki Shuhei  大阪医科薬科大学, 医学部, 講師 (20589840)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords半月板 / シート / 再生基材 / scaffold / ポリグリコール酸 / 力学強度
Outline of Research at the Start

半月板損傷は縫合手術が25%、部分切除が75%を占めている。部分切除が行われた膝関節は変形性膝関節症への進行リスクが上昇することが知られている。縫合困難な半月板損傷に対して、シートで包み込み治療することが本研究の新規性である。強度と、再生を促すような新規半月板シートが確立すれば、日本で年間2万件以上行われている半月板切除率は減少し、無理のない半月板温存治療が示すことができる。20%以上と言われる再断裂率低下にも繋がることが期待できる。

Outline of Final Research Achievements

We developed a novel meniscus sheet scaffold (Meniscus Sheet Scaffold; MSS) composed of polyglycolic acid (PGA) and poly(L-lactic acid)-caprolactone copolymer (P(LA/CL)). In this study, we performed meniscus lapping treatment using the developed sheet and investigated its effectiveness.
Results: The tensile strength of MSS was maintained more than 90% from the initial point to 4 weeks after hydrolysis, and more than 60% of the strength was maintained after 8 weeks. The cell viability ratio was increased from 2 to 4 weeks. Cartilage degeneration was suppressed in the MSS group.
Conclusion: Meniscus wrapping treatment with MSS may be useful for improving the environment of poor meniscus injury, promoting cell uptake and proliferation into the injured area, and accelerating meniscus healing from early stage, which may be useful for good histological repair of the meniscus and suppressing the progression of cartilage degeneration relative to the meniscus.

Academic Significance and Societal Importance of the Research Achievements

縫合困難な半月板損傷に対する治療は部分切除が主に行われるが、切除後の変形性膝関節症増悪が問題である。ポリグリコール酸(PGA)とポリL乳酸-カプロラクトン共重合体(P(LA/CL))からなる2層性新規半月板シートを用いた半月板ラッピング治療は、劣悪な半月板損傷の環境を改善することで、損傷部への細胞取り込みと増殖を促進し、早期から半月板治癒の促進効果が明らかとなり、半月板の良好な組織学的修復と相対する軟骨の変性進行抑制に有用な可能性が示唆された。

Report

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

    (3 results)

All 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Development of a novel meniscal sheet scaffold and its effectiveness for meniscal regeneration in a rabbit defect model2021

    • Author(s)
      Kuniaki Ikeda , Shuhei Otsuki, Nobuhiro Okuno, Shunsuke Sezaki, Kosuke Nakagawa, Yuki Miyamoto, Yoshinori Okamoto, Hitoshi Wakama, Tomohiro Okayoshi , Masashi Neo
    • Journal Title

      J Biomater Appl .

      Volume: 36 Issue: 3 Pages: 517-527

    • DOI

      10.1177/08853282211000523

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of a Pressure-Sensitive Conductive Rubber Sensor for Analyzing Meniscal Injury in Porcine Models2021

    • Author(s)
      Shunsuke Sezaki,Shuhei Otsuki, Kuniaki Ikeda, Yoshinori Okamoto, Hitoshi Wakama, Tomohiro Okayoshi , Masashi Neo
    • Journal Title

      Appl Bionics Biomech

      Volume: 3 Pages: 4931092-4931092

    • DOI

      10.1155/2021/4931092

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Patent(Industrial Property Rights)] 半月板再生基材2020

    • Inventor(s)
      大槻周平、池田邦明、瀬崎峻輔
    • Industrial Property Rights Holder
      大槻周平、池田邦明、瀬崎峻輔
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi