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Physiological analysis of spinal cord-brain coupling in neuropathic pain and elucidation of glial cell activation mechanism.

Research Project

Project/Area Number 18H02897
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 55050:Anesthesiology-related
Research InstitutionNiigata University

Principal Investigator

Kamiya Yoshinori  新潟大学, 医歯学系, 准教授 (90381491)

Co-Investigator(Kenkyū-buntansha) 佐々木 美佳  新潟大学, 医歯学系, 助教 (20774061)
倉部 美起  新潟大学, 医歯学系, 助教 (30635579)
大西 毅  新潟大学, 医歯学総合病院, 助教 (60804573)
渡部 達範  新潟大学, 医歯学総合病院, 助教 (30748330)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2018: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Keywords神経障害性疼痛 / 脊髄-脳連関 / フラビン蛋白蛍光イメージング法 / in vivoパッチクランプ法 / グリア活性化 / セロトニン / 脊髄ー脳連関 / in vivo脊髄パッチクランプ法 / フラビンタンパク蛍光イメージング / 生理学的解析 / グリア細胞活性化機構 / 脊髄-脳連関 / 脊髄―脳連関 / 脊髄細胞外記録 / 脊髄―能連関 / フラビン蛋白蛍光イメージング
Outline of Final Research Achievements

In this study, physiological changes in neuronal excitation in the spinal dorsal horn, the relay point of perception, and in the primary sensory cortex, the endpoint of perception, were measured longitudinally after peripheral nerve injury using flavoprotein fluorescence imaging and in vivo patch-clamp techniques. Although pain thresholds were consistently lowered after peripheral nerve injury, excitation in the cerebral cortex increased over time, while excitation in the spinal cord tended to decrease. The patch-clamp technique revealed that excitatory and inhibitory synaptic transmission in the spinal cord changes dynamically over time. The changes in synaptic transmission in the dorsal horn of the spinal cord could be suppressed by astrocyte inhibition, but astrocyte inhibition was ineffective in different chronic pain models.

Academic Significance and Societal Importance of the Research Achievements

神経障害性疼痛は難治性慢性疼痛の代表的なものだが,受容する神経回路でどのように成立・維持されているのか解明の余地があった.本研究では生理学的実験手法を用い,大脳皮質1次知覚野と脊髄後角では神経興奮の経時的な変化に違いがあることが初めて明確に示すことができ,脊髄後角における興奮性及び抑制性のシナプス伝達のインバランスが生じ,長期的には抑制性シナプス伝達が強く抑制されることが明らかになった.アストロサイトの活性化と慢性疼痛の関連については,これまでの報告通りに神経障害性疼痛では有効だったが,オピオイドによる痛覚過敏のような異なるモデルでは無効で,成因による疼痛維持機構の違いの一端が明らかになった.

Report

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

    (10 results)

All 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (4 results)

  • [Journal Article] Serotonin Plays a Key Role in the Development of Opioid-Induced Hyperalgesia in Mice2021

    • Author(s)
      Sasaki Mika、Kamiya Yoshinori、Bamba Keiko、Onishi Takeshi、Matsuda Keiichiro、Kohno Tatsuro、Kurabe Miyuki、Furutani Kenta、Yanagimura Harue
    • Journal Title

      The Journal of Pain

      Volume: - Issue: 6 Pages: 715-729

    • DOI

      10.1016/j.jpain.2020.12.008

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Low-dose droperidol suppresses transcranial electrical motor-evoked potential amplitude: a retrospective study2020

    • Author(s)
      Deguchi Hiroyuki、Furutani Kenta、Mitsuma Yusuke、Kamiya Yoshinori、Baba Hiroshi
    • Journal Title

      Journal of Clinical Monitoring and Computing

      Volume: Publish Ahead of Print Issue: 1 Pages: 1-1

    • DOI

      10.1007/s10877-020-00464-4

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Bolus Dose of Ketamine Reduces the Amplitude of the Transcranial Electrical Motor-evoked Potential: A Randomized, Double-blinded, Placebo-controlled Study2019

    • Author(s)
      Furutani K, Degichi H, Matsuhashi M, Mitsuma Y, Kamiya Y, Baba H
    • Journal Title

      J Neurosurg Anesthesiol

      Volume: Oct, 16 Issue: 3 Pages: 1-1

    • DOI

      10.1097/ana.0000000000000653

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Acute spatial spread of NO-mediated potentiation during hindpaw ischaemia in mice.2019

    • Author(s)
      Onishi T, Watanabe T, Sasaki M, Kamiya Y, Horie M, Tsukano H, Hishida R, Kohno T, Takebayashi H, Baba H, Shibuki K
    • Journal Title

      J Physiol.

      Volume: 597 Issue: 13 Pages: 3441-3455

    • DOI

      10.1113/jp277615

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neurosteroid dehydroepiandrosterone sulphate enhances pain transmission in rat spinal dorsal horn2019

    • Author(s)
      Yamamoto Goh、Kamiya Yoshinori、Sasaki Mika、Ikoma Miho、Baba Hiroshi、Kohno Tatsuro
    • Journal Title

      British Journal of Anaesthesia

      Volume: 印刷中 Issue: 2 Pages: e215-e225

    • DOI

      10.1016/j.bja.2019.03.026

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neural block therapy for radiation enteritis: a case report2019

    • Author(s)
      Tanaka Moegi、Kamiya Yoshinori、Shimizu Hiroki、Watanabe Tatsunori、Naito Natsuko、Baba Hiroshi
    • Journal Title

      JA Clinical Reports

      Volume: 5 Issue: 1

    • DOI

      10.1186/s40981-019-0239-9

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 脳神経外科の術後痛管理の実際2020

    • Author(s)
      紙谷義孝、栗田秀一郎
    • Organizer
      日本臨床麻酔学会 第40回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 神経障害性疼痛モデルマウスの大脳皮質一次体性感覚野及び脊髄後角における神経活動の経時的変化の解析2019

    • Author(s)
      番場景子, 渡部達範, 大西毅, 紙谷義孝, 馬場洋
    • Organizer
      第66回日本麻酔科学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] モルヒネ慢性投与による痛覚過敏は脊髄後角のセロトニンによって生じ、一部5HT-3受容体を介する2019

    • Author(s)
      紙谷義孝, 佐々木美佳, 田中萌生, 番場景子
    • Organizer
      第66回日本麻酔科学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Opioid-induced hyperalgesia induced by chronic administration of morphine is caused by serotonin in spinal dorsal horn and, in part, through the 5-HT3 receptor.2019

    • Author(s)
      Mika Sasaki, Yoshinori Kamiya, Keiko Bamba, Moegi Tanaka, Takeshi Ohnishi
    • Organizer
      Neuroscience 2019
    • Related Report
      2019 Annual Research Report

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

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