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Development of bioactive implants with both antibacterial and osteogenic properties

Research Project

Project/Area Number 18K09028
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Fujibayashi Shunsuke  京都大学, 医学研究科, 特定教授 (30362502)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords抗菌性 / 骨形成促進 / 骨吸収抑制 / 銀 / ストロンチウム / ガリウム / 黄色ブドウ球菌 / 大腸菌 / 骨形成 / チタン金属 / インプラント / 生体活性
Outline of Final Research Achievements

In this study, we examined Sr and Ag ions treated titanium metal (SrAg-Ti), which simultaneously releases antibacterial Ag ions and osteogenic Sr ions, and Ga ions treated titanium (Ga-Ti), which releases both antibacterial and bone resorption inhibitory Ga ions. In vitro experiments, SrAg-Ti showed high osteogenic effect and inhibition of Staphylococcus aureus and Escherichia coli growth, while in vivo experiments showed higher bone bonding ability and antibacterial effect against S. aureus. In vitro experiments, Ga-Ti showed inhibition of S. aureus growth, and in vivo experiments showed higher bone ability and antibacterial effect against S. aureus.

Academic Significance and Societal Importance of the Research Achievements

整形外科手術で用いるインプラントの重大な合併症として、「インプラント周囲の感染」と「インプラントの弛みやインプラント周囲の骨脆弱化」が挙げられる。患者は長期間の治療を強いられ、莫大な医療コストがかかる。抗菌性を有するイオンと骨形成促進作用あるいは骨吸収抑制作用を有するイオンを同時に徐放するバイオ機能を付加したインプラントが実用化されれば、患者の負担軽減と医療コスト削減につながる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (4 results)

All 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Bioactivity and antibacterial activity of strontium and silver ion releasing titanium2020

    • Author(s)
      Masamoto Kazutaka、Fujibayashi Shunsuke、Yamaguchi Seiji、Otsuki Bungo、Okuzu Yaichiro、Kawata Tomotoshi、Goto Koji、Shimizu Takayoshi、Shimizu Yu、Kawai Toshiyuki、Hayashi Makoto、Morizane Kazuaki、Imamura Masashi、Ikeda Norimasa、Takaoka Yusuke、Matsuda Shuichi
    • Journal Title

      Journal of Biomedical Materials Research Part B: Applied Biomaterials

      Volume: 109 Issue: 2 Pages: 238-245

    • DOI

      10.1002/jbm.b.34695

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In vitro study of antibacterial and osteogenic activity of titanium metal releasing strontium and silver ions2020

    • Author(s)
      Okuzu Yaichiro、Fujibayashi Shunsuke、Yamaguchi Seiji、Masamoto Kazutaka、Otsuki Bungo、Goto Koji、Kawai Toshiyuki、Shimizu Takayoshi、Morizane Kazuaki、Kawata Tomotoshi、Shimizu Yu、Hayashi Makoto、Matsuda Shuichi
    • Journal Title

      Journal of Biomaterials Applications

      Volume: 35 Issue: 6 Pages: 670-680

    • DOI

      10.1177/0885328220959584

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ガリウムイオン担持チタン金属の評価2020

    • Author(s)
      林信実、藤林俊介、山口誠二、高岡佑輔、池田周正、清水孝彬、河井利之、大槻文悟、後藤公志、松田秀一
    • Organizer
      第35回日本整形外科学会基礎学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] SrおよびAgイオン徐放性チタンインプラントの骨結合性および抗菌性評価2019

    • Author(s)
      正本和誉、藤林俊介、山口誠二、大槻文悟、奥津弥一郎、川田交俊、後藤公志、清水孝彬、清水優、河井利之、松田秀一
    • Organizer
      第39回整形外科バイオマテリアル研究会
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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