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Development of the subperiosteal bioreactor technology using temperature-responsive bioabsorbable gel sustained release of PRP

Research Project

Project/Area Number 19K19070
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57040:Regenerative dentistry and dental engineering-related
Research InstitutionNagasaki University

Principal Investigator

Koga Takamitsu  長崎大学, 医歯薬学総合研究科(歯学系), 客員研究員 (50779428)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords多血小板血漿 / 凍結乾燥保存 / 歯槽骨再生 / 温度応答性高分子ゲル / 骨膜
Outline of Research at the Start

これまで歯槽骨再生治療では自家骨や人工骨等の移植骨を用いた骨再生手術が主に行われてきたが、本研究では手術操作を必要とせず、注射器で骨膜下に成長因子を含有させた生体吸収性ゲルを注入するという容易な手技で骨再生を図る方法の開発を考案した。

Outline of Final Research Achievements

In this study, we developed bone regeneration technique by an easy procedure to inject the bioabsorbable gel which incorporated growth factors under the periosteum with a syringe.
A certain degree of osteoinductivity were confirmed in animal experiment of bioabsorbable gel mixed with freeze-dry platelet-rich plasma. We are conducting detailed analysis about the mechanism of this bone osteoinductivity.
Also, we examined the safety of freeze-dried platelet-rich plasma in a human body as a pilot study in clinical research. The results obtained in this study suggested that FD-PRP can be used safely for bone engineering in clinical practice. We published an article in Journal of Clinical Medicine and presented in the conference.

Academic Significance and Societal Importance of the Research Achievements

本研究では、生体吸収性ゲルに成長因子を添加し局所応用することで、骨誘導が行える可能性が示唆され、低侵襲な骨再生治療の先駆け的研究に位置付けられる。今回は歯槽骨再生を主眼に研究を進めたが、本技術は骨膜下であればいずれの部位でも応用可能であり、整形外科分野などへの応用も期待できる。
また骨再生治療が必要となる場合の多くは高齢者であり、全身状態に問題がある場合は侵襲度の高い治療は避けざるを得ないのが現状である。しかし本技術のように治療の低侵襲化を進めることで適応症は拡大し、ひいては国民の健康増進に寄与すると考えられる。

Report

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

    (2 results)

All 2021 2020

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (1 results)

  • [Journal Article] Clinical Safety Assessment of Autologous Freeze-Drying Platelet-Rich Plasma for Bone Regeneration in Maxillary Sinus Floor Augmentation: A Pilot Study2021

    • Author(s)
      Koga Takamitsu、Nakatani Yuya、Ohba Seigo、Hara Masahito、Sumita Yoshinori、Nagai Kazuhiro、Asahina Izumi
    • Journal Title

      Journal of Clinical Medicine

      Volume: 10 Issue: 8 Pages: 1678-1678

    • DOI

      10.3390/jcm10081678

    • NAID

      120007174516

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 凍結乾燥保存多血小板血漿(FD-PRP)による組織再生治療技術を用いた歯槽骨再生療法の検討(パイロット試験)2020

    • Author(s)
      古賀喬充,中谷佑哉,原 昌士,住田吉慶,大場誠悟,長井一浩,朝比奈 泉
    • Organizer
      日本口腔外科学会
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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