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Hyperocclusive state and MRONJ

Research Project

Project/Area Number 20K18604
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionHiroshima University

Principal Investigator

Mine Yuichi  広島大学, 医系科学研究科(歯), 講師 (60605989)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
KeywordsMRONJ / 咬合性外傷 / 実験的過剰咬合 / 顎骨壊死 / ONJ / 薬剤関連顎骨壊死 / 過剰咬合
Outline of Research at the Start

補綴歯科治療において顎堤の状態不良は、治療の成功を妨げる大きな要因となる。薬剤関連顎骨壊死(MRONJ)は複数のリスク要因が提唱されているものの、医学的なエビデンスの裏付けがなされていないのものも多い。本研究では、実験的過剰咬合誘導MRONJモデルマウスと骨様細胞集塊によるin vitro骨壊死モデルの統合解析により、MRONJの発症および重症化機序解明に資する研究を推進する。

Outline of Final Research Achievements

Osteonecrosis of the jaw (ONJ) is a serious adverse event that is associated with antiresorptive agents, and it manifests as bone exposure in the maxillofacial region. This in vivo model exhibited ONJ in alveolar bone, particularly in the mandible. Moreover, the experimental hyperocclusion induced remarkable alveolar bone resorption in both mouse mandible and maxilla, whereas N-BP treatment completely prevented alveolar bone resorption. In this study, we also modeled trauma by exposing clumps of mesenchymal stem cells (MSCs)/extracellular matrix complex to hydrostatic pressure in combination with N-BP. Hydrostatic pressure loading induced lactate dehydrogenase (LDH) release by calcified cell clumps that were differentiated from MSCs; this LDH release was enhanced by N-BP priming. These in vivo and in vitro models may contribute further insights into the effect of excessive mechanical loading on ONJ onset in patients with occlusal trauma.

Academic Significance and Societal Importance of the Research Achievements

補綴歯科治療において顎堤は、義歯やインプラントを支持する上で重要な役割を果たしており、その状態不良は補綴歯科治療の成功を妨げる大きな要因となる。薬剤関連顎骨壊死は、本邦を含め複数のポジションペーパーが関連学会から示されている。しかしながら、その発症メカニズムは未だ明確にはなっていない。本研究では、過剰な咬合力や義歯の使用による口腔内の刺激と薬剤関連顎骨壊死の関連について、その一端を明らかにすることを目指し研究を推進した。

Report

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

    (9 results)

All 2022 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Lansoprazole and zoledronate delays hard tissue healing of tooth extraction sockets in dexamethasone-treated mice2022

    • Author(s)
      Yoshioka Reina、Mine Yuichi、Kaku Masato、Nikawa Hiroki、Murayama Takeshi
    • Journal Title

      Biomedicine & Pharmacotherapy

      Volume: 150 Pages: 112991-112991

    • DOI

      10.1016/j.biopha.2022.112991

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Automated segmentation of articular disc of the temporomandibular joint on magnetic resonance images using deep learning2022

    • Author(s)
      Ito Shota、Mine Yuichi、Yoshimi Yuki、Takeda Saori、Tanaka Akari、Onishi Azusa、Peng Tzu-Yu、Nakamoto Takashi、Nagasaki Toshikazu、Kakimoto Naoya、Murayama Takeshi、Tanimoto Kotaro
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 221-221

    • DOI

      10.1038/s41598-021-04354-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Detecting the presence of supernumerary teeth during the early mixed dentition stage using deep learning algorithms: A pilot study2022

    • Author(s)
      Mine Yuichi、Iwamoto Yuko、Okazaki Shota、Nakamura Kentaro、Takeda Saori、Peng Tzu‐Yu、Mitsuhata Chieko、Kakimoto Naoya、Kozai Katsuyuki、Murayama Takeshi
    • Journal Title

      International Journal of Paediatric Dentistry

      Volume: - Issue: 5 Pages: 678-685

    • DOI

      10.1111/ipd.12946

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Occlusal Trauma and Bisphosphonate-Related Osteonecrosis of the Jaw in Mice2021

    • Author(s)
      Mine Yuichi、Okuda Karin、Yoshioka Reina、Sasaki Yuuki、Peng Tzu-Yu、Kaku Masato、Yoshiko Yuji、Nikawa Hiroki、Murayama Takeshi
    • Journal Title

      Calcified Tissue International

      Volume: 110 Issue: 3 Pages: 380-392

    • DOI

      10.1007/s00223-021-00916-2

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] In Vivo Efficacy of Lacticaseibacillus rhamnosus L8020 in a Mouse Model of Oral Candidiasis2021

    • Author(s)
      Ito Rei、Mine Yuichi、Yumisashi Yoshie、Yoshioka Reina、Hamaoka Misa、Taji Tsuyoshi、Murayama Takeshi、Nikawa Hiroki
    • Journal Title

      Journal of Fungi

      Volume: 7 Issue: 5 Pages: 322-322

    • DOI

      10.3390/jof7050322

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Evaluation of Extraction Socket Healing in Zoledronate-medicated Mice Combining Lansoprazole2021

    • Author(s)
      Yoshioka R, Mine Y, Nikawa H, Murayama T
    • Organizer
      2021 IADR/AADR/CADR General Session & Exhibition
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ランソプラゾールおよびゾレドロネート投与マウスの抜歯窩解析2021

    • Author(s)
      吉岡玲奈,峯 裕一,和智貴紀,二川浩樹,村山 長
    • Organizer
      日本老年歯科医学会第32回学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 実験的過剰咬合におけるビスフォスフォネート投与マウスのBRONJ様病態解析2020

    • Author(s)
      峯 裕一, 蓑田芽萌理, 吉岡玲奈, 牧平清超, 二川浩樹, 村山 長
    • Organizer
      日本補綴歯科学会第129回学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Lansoprazole Delays Extraction Socket Healing in Bisphosphonate-medicated Mice2020

    • Author(s)
      Yoshioka R, Mine Y, Nikawa H, Murayama T
    • Organizer
      The 34th Annual Scientific Meeting of International Association of Dental Research - South East Asia Division (IADR-SEA)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2023-01-30  

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