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Elucidation of chronic pain mechanism by approach from physiologically active substances, neural circuits and aging

Research Project

Project/Area Number 20K18079
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionUniversity of Occupational and Environmental Health, Japan

Principal Investigator

Matsuura Takanori  産業医科大学, 医学部, 非常勤医師 (90821679)

Project Period (FY) 2020-04-01 – 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 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords慢性疼痛 / 神経可塑性 / 視床下部 / オキシトシン / LTP / LTD / アジュバント関節炎 / 炎症性生理活性物質 / NO / MMP / 炎症性サイトカイン / 骨代謝産物 / 視床下部ペプチド / 長期増強
Outline of Research at the Start

慢性疼痛において、大脳辺縁系を含む中枢神経系の変化は情動面の恐怖や不安という感情にも関与しており重要であるとされている。本申請課題では、末梢組織から放出される骨代謝産物ならびに炎症性サイトカインならびにマトリックスプロテアーゼ (MMP) のような炎症性生理活性物質と大脳辺縁系における神経細胞の可塑性ならびに下行性疼痛抑制系との関連について分子基盤を解明すると同時に、これらの生理活性物質における生体逃避反応について、ホールセル・パッチクランプ法ならびに行動学を用いて解明することを目標とする。

Outline of Final Research Achievements

In chronic pain, changes in the central nervous system, including the limbic system, are considered to be an important area involved in emotions such as fear and anxiety. In this study, we investigated the mechanism of chronic pain, which increases with age, in relation to neuroplastic changes in the central nervous system (especially in areas involved in chronic pain) and descending pain inhibiting pathway (especially the hypothalamic oxytocin system) by means of bioactive substances such as inflammatory cytokines and matrix proteases (MMPs) released from the peripheral tissues. We investigated the relationship between the neuroplasticity in the central nervous system (especially in areas involved in chronic pain) and the decrease in the descending pain inhibiting pathway (with a particular focus on the hypothalamic oxytocin system) by using the Whole Cell Patch Clamp technique, and clarified part of the molecular system of this relationship.

Academic Significance and Societal Importance of the Research Achievements

超高齢化社会の日本において、運動器の慢性変性疾患を扱う整形外科医にとって、日常診療の中で骨粗鬆症ならびに変性疾患に伴う慢性疼痛患者といかに向き合うかというのは大きなテーマの一つである。近年、骨粗鬆症ならびに変性疾患の病態として持続性慢性炎症説があり、注目を集めているが、これらの慢性炎症性物質と慢性疼痛のメカニズムの関与については不明な点が多い。今研究では加齢に伴い増加する慢性疼痛の機序が、①大脳辺縁系領域での神経可塑性変化にて来たすこと、また②神経ペプチドを中心とする下行疼痛抑制系の低下にて来たす可能性があることを報告した。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (5 results)

All 2022 2021 2020

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Oxytocin in the anterior cingulate cortex attenuates neuropathic pain and emotional anxiety by inhibiting presynaptic long-term potentiation2021

    • Author(s)
      Xu-Hui Li, Takanori Matsuura, Man Xue, Qi-Yu Chen, Ren-Hao Liu, Jing-Shan Lu, Wantong Shi, Kexin Fan, Zhaoxiang Zhou, Zhuang Miao, Jiale Yang, Sara Wei, Feng Wei, Tao Chen, Min Zhuo
    • Journal Title

      Cell Reports

      Volume: 36(3) Issue: 3 Pages: 109411-109411

    • DOI

      10.1016/j.celrep.2021.109411

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Presynaptic glutamatergic transmission and feedback system of oxytocinergic neurons in the hypothalamus of a rat model of adjuvant arthritis.2020

    • Author(s)
      Fujitani T, Matsuura T, Kawasaki M, Suzuki H, Nishimura H, Baba K, Yamanaka Y, Ohnishi H, Ueta Y, Sakai A
    • Journal Title

      Molecular Pain

      Volume: 16 Pages: 1-15

    • DOI

      10.1177/1744806920943334

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Limitations of self-report tools in pain evaluation with acute osteoporotic vertebral fractures2022

    • Author(s)
      Takanori Matsuura, Youhei Yoshimi, Shiho Takahashi, Nami Tanaka, Hanae Morinaga, Asuka Hayata, Minami Onishi, Yousuke Nagano, Hideo Ohnishi
    • Organizer
      IASP World Congress on Pain
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Nitric oxide contributes to the maintenance of LTP in the oxytocin-mRFP1 neuron of the rat hypothalamus2022

    • Author(s)
      松浦 孝紀
    • Organizer
      第43回 日本疼痛学会
    • Related Report
      2021 Research-status Report
  • [Presentation] アジュバント関節炎モデルラットにおける視床下部オキシトシン作動性ニューロンでのシナプス前グルタミン酸作動性伝達ならびにフィードバックシステム2021

    • Author(s)
      松浦 孝紀、藤谷 晃亮、川﨑 展、鈴木 仁士、西村 春来、馬場 一彦、山中 芳亮、大西 英生、上田 陽一、酒井 昭典
    • Organizer
      第42回日本疼痛学会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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