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Development of a powerful bone-fixing polymer-coated screw by applying a novel surface modification technology

Research Project

Project/Area Number 21K12671
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionJikei University School of Medicine

Principal Investigator

Ushiku Chikara  東京慈恵会医科大学, 医学部, 講師 (10338874)

Co-Investigator(Kenkyū-buntansha) 田中 賢  九州大学, 先導物質化学研究所, 教授 (00322850)
穴田 貴久  九州大学, 先導物質化学研究所, 准教授 (30398466)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords中間水コンセプト / osseointegration / 高分子 / ポリ(2-メトキシエチルアクリレート;PMEA) / 皮質骨多孔化 / 高分子修飾 / ポリ(2-メトキシエチルアクリレート) / 骨結合性 / Osseointegration / 中間水 / 金属製インプラント
Outline of Research at the Start

骨折治療手術などで汎用される金属製インプラントは、即時的な一次固定と漸次的な二次固定によって、骨との間に強固に骨性結合(ossointegration)される。本研究では、金属製インプラントの化学的表面修飾によって骨との接着性を向上して初期固定と二次固定の両方を促進させる金属製インプラント表面の高分子修飾法を開発することを目的とする。本研究は金属製インプラント表面における骨再生効果を時間軸で捉え、二種類の高分子表面修飾による即時、漸次の二期的な骨性結合(osseointegration)の促進を誘導する画期的手法を提案する。

Outline of Final Research Achievements

In this study, the osseointegration of the PMEA-modified titanium implant was verified in vivo. The results of mechanical tests (push-in test) and histological bone morphometry (gap width between the implant and cortical bone, cortical bone porosity area/cortical bone area) showed that PMEA suppressed bone resorption around the bone pits, minimizing cortical bone resorption around the implant immediately after placement of the implants, and that the bone formation that occurred at the same time minimized cortical bone resorption between the implant and the pits, and that the bone resorption around the implant was reduced by PMEA. The resulting bone formation narrowed the gap between the round bar and cortical bone surface, and mechanical bone connectivity was enhanced at an early stage.

Academic Significance and Societal Importance of the Research Achievements

本研究グループが確立した中間水コンセプトに基づき開発された表面改質技術は、生体適合性を有し、簡便に低コストで種々の材料表面への修飾に応用することができる。本研究では、PMEA修飾チタン製インプラントが骨固着性(osseointegration)を促進することを、in vivoで確かめた。骨粗鬆症を背景とした骨関連手術の成功のために、骨固着性(osseointegration)を早く確実に獲得できるインプラント開発が望まれるが、PMEA修飾インプラントはその期待に応える実現性が高い技術である。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (17 results)

All 2023 2022 2021

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (8 results) (of which Int'l Joint Research: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Incidence and Risk Factors for Pneumonia in the Chronic Phase of Cervical Spinal Cord Injury with Complete Motor Paralysis2023

    • Author(s)
      Ushiku Chikara、Suda Kota、Michikawa Takehiro、Harmon Satoko Matsumoto、Komatsu Miki、Tsuji Osahiko、Takahata Masahiko、Saito Mitsuru、Iwasaki Norimasa、Minami Akio
    • Journal Title

      Spine Surgery and Related Research

      Volume: 7 Issue: 4 Pages: 333-340

    • DOI

      10.22603/ssrr.2022-0254

    • ISSN
      2432-261X
    • Year and Date
      2023-07-27
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cervical kyphosis surgery using a cervical pedicle screw placed with a U-shaped wire that enables observation of the lateral edge of the cortical bone of the spinal canal: A case report and literature review2023

    • Author(s)
      Ushiku Chikara、Akiyama Shoshi、Kanai Tomoaki、Sawada Naomu、Saito Mitsuru
    • Journal Title

      Medicine

      Volume: 102 Issue: 46 Pages: e36088-e36088

    • DOI

      10.1097/md.0000000000036088

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Risk factors of AIS C incomplete cervical spinal cord injury for poor prognosis?The significance of anorectal evaluation2023

    • Author(s)
      Tsuji Osahiko、Suda Kota、Michikawa Takehiro、Takahata Masahiko、Ozaki Masahiro、Konomi Tsunehiko、Matsumoto Harmon Satoko、Komatsu Miki、Ushiku Chikara、Menjo Yusuke、Iimoto Seiji、Watanabe Kota、Nakamura Masaya、Matsumoto Morio、Minami Akio、Iwasaki Norimasa
    • Journal Title

      Journal of Orthopaedic Science

      Volume: 28 Issue: 6 Pages: 1227-1233

    • DOI

      10.1016/j.jos.2022.10.007

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Clinical study of preoperative skeletal muscle mass as a predictor of physical performance recovery following palliative surgery for spinal metastases2023

    • Author(s)
      Ushiku Chikara、Akiyama Shoshi、Ikegami Taku、Inoue Takeshi、Shinohara Akira、Kobayashi Shunsuke、Kajiwara Takayoshi、Arimura Daigo、Katsumi Shunsuke、Obata Shintaro、Soshi Shigeru、Saito Mitsuru
    • Journal Title

      Journal of Orthopaedic Science

      Volume: 28 Issue: 4 Pages: 874-879

    • DOI

      10.1016/j.jos.2022.06.006

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Octacalcium phosphate crystals including a higher density dislocation improve its materials osteogenecity2022

    • Author(s)
      Hamai Ryo、Sakai Susumu、Shiwaku Yukari、Anada Takahisa、Tsuchiya Kaori、Ishimoto Takuya、Nakano Takayoshi、Suzuki Osamu
    • Journal Title

      Applied Materials Today

      Volume: 26 Pages: 101279-101279

    • DOI

      10.1016/j.apmt.2021.101279

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of bound water content on cell adhesion strength to water-insoluble polymers2021

    • Author(s)
      Nishida Kei、Anada Takahisa、Kobayashi Shingo、Ueda Tomoya、Tanaka Masaru
    • Journal Title

      Acta Biomaterialia

      Volume: 134 Pages: 313-324

    • DOI

      10.1016/j.actbio.2021.07.058

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Attachment and Growth of Fibroblast Cells on Poly (2-Methoxyethyl Acrylate) Analog Polymers as Coating Materials2021

    • Author(s)
      Anjum Rubaiya、Nishida Kei、Matsumoto Haruka、Murakami Daiki、Kobayashi Shingo、Anada Takahisa、Tanaka Masaru
    • Journal Title

      Coatings

      Volume: 11 Issue: 4 Pages: 461-461

    • DOI

      10.3390/coatings11040461

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of simultaneous hydrolysis of OCP and PLGA on bone induction of a PLGA-OCP composite scaffold in a rat femoral defect2021

    • Author(s)
      Oizumi Itsuki、Hamai Ryo、Shiwaku Yukari、Mori Yu、Anada Takahisa、Baba Kazuyoshi、Miyatake Naohisa、Hamada Soshi、Tsuchiya Kaori、Nishimura Shin-nosuke、Itoi Eiji、Suzuki Osamu
    • Journal Title

      Acta Biomaterialia

      Volume: 124 Pages: 358-373

    • DOI

      10.1016/j.actbio.2021.01.048

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 金属表面改質技術を用いた高分子修飾インプラントの骨固着性についての検討2023

    • Author(s)
      池上 拓、牛久智加良、穴田貴久、森岡和仁、田中賢、斎藤 充
    • Organizer
      第38回日本整形外科基礎学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 中間水コンセプトに基づく生体適合性高分子修飾金属製インプラントの骨結合性向上メカニズムの検討2023

    • Author(s)
      池上 拓、牛久智加良、穴田貴久、森岡和仁、栗原泰季、田中賢、斎藤 充
    • Organizer
      第42回バイオマテリアル研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 生体適合性高分子コーティングが骨形成に与える影響の解析2023

    • Author(s)
      栗原泰季, 穴田貴久, 門柚里, 池上拓, 牛久智加良, 田中賢
    • Organizer
      第22回 日本再生医療学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] 高分子コーティング基板が骨芽細胞分化に与える影響の解析2022

    • Author(s)
      栗原 泰季, 門 柚里, 穴田 貴久, 田中 賢
    • Organizer
      日本化学会秋季事業 第12回 CSJ化学フェスタ2022
    • Related Report
      2022 Research-status Report
  • [Presentation] 金属表面改質技術を用いた高分子修飾インプラントの骨固着性についての検討2022

    • Author(s)
      池上 拓、牛久智加良、穴田貴久、田中賢、斎藤 充
    • Organizer
      第41回バイオマテリアル研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] ポリ 2-メトキシエチルアクリレー ト)類似体コーティングの骨芽細胞分化に与える影響2022

    • Author(s)
      穴田貴久, 門柚里, 本田義知, 田中賢
    • Organizer
      第21回日本再生医療学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 長管骨骨膜上における徐放性FGF2の長管骨内osseointegration促進効果の検討2021

    • Author(s)
      牛久智加良、池上 拓、斎藤 充
    • Organizer
      第40回バイオマテリアル研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] PMEA類似体高分子コーティング基板 の骨芽細胞分化への影響2021

    • Author(s)
      穴田貴久, 門柚里, 本田義知, 田中賢
    • Organizer
      第43回日本バイオマテリアル学会/第8回アジアバイオ マテリアル学会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] ポリマー化合物2022

    • Inventor(s)
      穴田貴久、門柚里、西田慶、田中賢
    • Industrial Property Rights Holder
      穴田貴久、門柚里、西田慶、田中賢
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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