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Why does neuropathic pain spread beyond the area of control of the injured peripheral nerves?

Research Project

Project/Area Number 20H03775
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

Baba Hiroshi  新潟大学, 医歯学系, 教授 (00262436)

Co-Investigator(Kenkyū-buntansha) 倉部 美起  新潟大学, 医歯学系, 助教 (30635579)
渡部 達範  新潟大学, 医歯学総合病院, 特任講師 (30748330)
大西 毅  新潟大学, 医歯学総合病院, 助教 (60804573)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Keywords神経障害性疼痛 / 脊髄 / グリア / トロンボスポンディン / Ca2+ イメージング / 後根刺激 / Ca イメージング / パッチクランプ / イメージング / 脊髄スライス / in vitro イメージング / 脊髄後角
Outline of Research at the Start

末梢神経損傷による神経障害性疼痛は時として傷害された神経の支配領域を超えて頭尾方向に広がり、脊髄レベルでの異常興奮が頭尾方向に広がっているとしか考えられないことがある。その現象の仮説として、我々は神経障害によって脊髄内のアストロサイトからトロンボスポンディンというタンパク質が放出され、それが脊髄内を頭尾方向に広がっていくことによって異常なシナプス新生が起き、異分節に疼痛領域が広がるのではないかと考えた。しかし、これまで神経損傷やトロンボスポンディンの脊髄内投与により、脊髄内興奮領域が頭尾方向に広がることを証明した報告はないため、脊髄内イメージング法や電気生理学的方法によって証明しようと考えた。

Outline of Final Research Achievements

Thrombospondin is released from astrocytes, a type of glial cell, in the spinal cord when peripheral nerves are damaged. We injected thrombospondin into the spinal cord cavity and examined the escape behavior of rats to mechanical stimulation of the hindlimb plantar and femoral regions, and found that the escape threshold decreased over time and the range of escape increased. The spinal cord was removed from these rats, and the intensity of excitation of spinal dorsal horn cells by sensory input from a single dorsal root and its spatial extent in the cephalocaudal direction were examined by Ca2+ imaging, and it was found that the range of neural excitation was greatly expanded compared to normal animals.

Academic Significance and Societal Importance of the Research Achievements

末梢神経が損傷されることによって生じる痛みは損傷神経の支配部位を超えて広がることが明らかとなった。その機序には脊髄後角での神経興奮が頭尾方向に広がりやすくなっているという可塑性変化に基づくものである。その可塑性変化には脊髄内のアストロサイトから分泌されるトロンボスポンディンが関与している可能性が高い。末梢神経損傷による神経障害性疼痛では時間経過により痛みが強まるとともに、疼痛領域は損傷された神経の支配領域にとどまらず隣接する神経支配領域に広がり、異分節の脊髄領域に入力する非侵害性感覚情報によって痛みが生じてしまうことがあるが、それを医学的に証明したことに社会的意義があると思われる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (21 results)

All 2022 2021 2020 Other

All Journal Article (15 results) (of which Peer Reviewed: 15 results,  Open Access: 8 results) Presentation (5 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] Epidural administration of 2% Mepivacaine after spinal anesthesia does not prevent intraoperative nausea and vomiting during cesarean section: A prospective, double-blinded, randomized controlled trial2022

    • Author(s)
      Takayuki Kita, Kenta Furutani, Hiroshi Baba
    • Journal Title

      Medicine (Baltimore)

      Volume: 101 Issue: 26 Pages: e29709-e29709

    • DOI

      10.1097/md.0000000000029709

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structural and functional properties of spinal dorsal horn neurons after peripheral nerve injury change overtime via astrocyte activation2022

    • Author(s)
      Kurabe Miyuki、Sasaki Mika、Furutani Kenta、Furue Hidemasa、Kamiya Yoshinori、Baba Hiroshi
    • Journal Title

      iScience

      Volume: 25 Issue: 12 Pages: 105555-105555

    • DOI

      10.1016/j.isci.2022.105555

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neuronal Nitric Oxide Synthase Suppression Confers the Prolonged Analgesic Effect of Sciatic Nerve Block With Perineural Dexamethasone in Postoperative Pain Model Mice2022

    • Author(s)
      Keiichiro Matsuda, Mika Sasaki, Hiroshi Baba, Yoshinori Kamiya
    • Journal Title

      The Journal of Pain

      Volume: 23 Pages: 1765-1778

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Norepinephrine Restores Inhibitory Tone of Spinal Lamina X Circuitry, thus Contributing to Analgesia Against Inflammatory Pain2022

    • Author(s)
      Nobuko Ohashi, Daisuke Uta, Masayuki Ohashi, Hiroshi Baba
    • Journal Title

      Neuroscience

      Volume: 490 Pages: 224-235

    • DOI

      10.1016/j.neuroscience.2022.03.023

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analgesic effect of ivabradine against inflammatory pain mediated by hyperpolarization-activated cyclic nucleotide?gated cation channels expressed on primary afferent terminals in the spinal dorsal horn2022

    • Author(s)
      Ohashi Nobuko、Uta Daisuke、Ohashi Masayuki、Baba Hiroshi
    • Journal Title

      Pain

      Volume: 163 Issue: 7 Pages: 1356-1369

    • DOI

      10.1097/j.pain.0000000000002523

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Low-dose Droperidol Reduces the Amplitude of Transcranial Electrical Motor-evoked Potential2021

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

      Journal of Neurosurgical Anesthesiology

      Volume: Publish Ahead of Print Issue: 4 Pages: 424-428

    • DOI

      10.1097/ana.0000000000000784

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of the Kampo medicine Yokukansan for perioperative anxiety and postoperative pain in women undergoing breast surgery: A randomized, controlled trial2021

    • Author(s)
      Tanaka Moegi、Tanaka Tsunehiko、Takamatsu Misako、Shibue Chieko、Imao Yuriko、Ando Takako、Baba Hiroshi、Kamiya Yoshinori
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 11 Pages: e0260524-e0260524

    • DOI

      10.1371/journal.pone.0260524

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Propofol reduces the amplitude of transcranial electrical motor-evoked potential without affecting spinal motor neurons: a prospective, single-arm, interventional study2021

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

      Journal of Anesthesia

      Volume: - Issue: 3 Pages: 434-441

    • DOI

      10.1007/s00540-021-02927-7

    • NAID

      40022573940

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epidural Administration of Ropivacaine Reduces the Amplitude of Transcranial Electrical Motor?Evoked Potentials2020

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

      Anesthesia & Analgesia

      Volume: Publish Ahead of Print Issue: 4 Pages: 1-1

    • DOI

      10.1213/ane.0000000000005236

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [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
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Congenital Tracheal Aplasia Without Prenatal Diagnosis Masked by Maternal Obesity and Gestational Diabetes2020

    • Author(s)
      Yamamoto Tomohiro、Kurabe Miyuki、Matsumoto Kensuke、Sugai Shunya、Baba Hiroshi
    • Journal Title

      A & A Practice

      Volume: 14 Issue: 6 Pages: e01200-e01200

    • DOI

      10.1213/xaa.0000000000001200

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quadratus lumborum block type 2 for pedicle groin flap analgesia: a case report2020

    • Author(s)
      Watanabe Tatsunori、Moriya Koji、Baba Hiroshi
    • Journal Title

      JA Clinical Reports

      Volume: 6 Issue: 1 Pages: 36-36

    • DOI

      10.1186/s40981-020-00342-7

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Downfolding of the epiglottis into the laryngeal inlet after tracheal intubation using the McGRATHTM MAC videolaryngoscope: a case report2020

    • Author(s)
      Soma Haruno、Furutani Kenta、Hibino Ayaka、Hibino Akinobu、Baba Hiroshi
    • Journal Title

      JA Clinical Reports

      Volume: 6 Issue: 1 Pages: 42-42

    • DOI

      10.1186/s40981-020-00349-0

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Efficacy of a novel urinary catheter for men with a local anesthetic injection port for catheter-related bladder discomfort: a randomized controlled study2020

    • Author(s)
      Imai Hidekazu、Seino Yutaka、Baba Hiroshi
    • Journal Title

      Journal of Anesthesia

      Volume: 34 Issue: 5 Pages: 688-693

    • DOI

      10.1007/s00540-020-02807-6

    • NAID

      40022379647

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] SUZYTM forceps facilitate nasogastric tube insertion under McGRATHTM MAC videolaryngoscopic guidance2020

    • Author(s)
      Furutani Kenta、Watanabe Tatsunori、Matsuda Keiichiro、Kamiya Yoshinori、Baba Hiroshi
    • Journal Title

      Medicine

      Volume: 99 Issue: 41 Pages: e22545-e22545

    • DOI

      10.1097/md.0000000000022545

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 細胞内Ca2+と神経興奮の関係-細胞内Ca2+イメージングは活動電位発生頻度を推定する方法となりえるか2022

    • Author(s)
      馬場 洋
    • Organizer
      日本麻酔科学会69回学術集会(神戸)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 臨床医の基礎研究 -古典的Ca2+イメージング法と古典的パッチクランプ法による痛みの研究-2021

    • Author(s)
      馬場 洋
    • Organizer
      生理学研究所 痛み研究会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 脊髄X層におけるノルアドレナリンの鎮痛機序2020

    • Author(s)
      大橋宣子、大橋正幸、馬場 洋
    • Organizer
      第67回日本麻酔科学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] イバブラジンは脊髄後角ニューロンに作用し鎮痛効果を発揮する2020

    • Author(s)
      大橋宣子、大橋正幸、馬場 洋
    • Organizer
      第67回日本麻酔科学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 高齢者の帯状疱疹後神経痛に対する薬物療法の検討2020

    • Author(s)
      日比野亮信、内藤夏子、田中萌生、清水大喜、馬場 洋
    • Organizer
      第54回日本ペインクリニック学会
    • Related Report
      2020 Annual Research Report
  • [Remarks] 新潟大学 大学院 医歯学総合研究科 麻酔科学分野・研究分野紹介・疼痛機序研究班

    • URL

      https://www.med.niigata-u.ac.jp/ane/profile/profile.html

    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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