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Investigation of the therapeutics for neuropathic pain through GABAergic transmission

Research Project

Project/Area Number 17K07078
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Nerve anatomy/Neuropathology
Research InstitutionUniversity of the Ryukyus

Principal Investigator

Takayama Chitoshi  琉球大学, 医学(系)研究科(研究院), 教授 (60197217)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords慢性疼痛 / GABA伝達機構 / K, Cl共輸送体(KCC2) / ミクログリア / モデルマウス / 遺伝子改変マウス / 神経障害性疼痛 / 疼痛行動評価 / K+, Cl- 共輸送体(KCC2) / 小胞型GABA輸送体(VGAT) / ノックアウトマウスヘテロ接合体 / 疼痛行動検査 / K+,C1-共輸送体(KCC2) / 小胞型GABA輸送体 / ノックアウトマウス / 脛骨神経 / 腓腹神経 / 電子顕微鏡解析 / γ-アミノ酪酸(GABA) / グリシン / ワーラー変性 / K+,C1-共輸送体(KCC2) / 疼痛行動解析 / 腓骨神経 / GABAergic signaling / neuropathic pain / knockout mice / K+-Cl- co-transporter 2 / VGAT/VIAAT
Outline of Final Research Achievements

Neuropathic pain, including chronic lumbar pain, is a serious problem worldwide.
To reveal the mechanisms underlying the neuropathic pain through changes in GABAergic action,and to establish the treatments for neuropathic pain,we examined neuropathic pain model mice and gene-targeted mice. We found that neuropathic pain may be caused by reduced GABAergic synaptic inhibition, resulting from elevated the intracellular chloride ion concentration after the reduction of KCC2 by activated microglia.

Academic Significance and Societal Importance of the Research Achievements

神経障害性疼痛は、神経の損傷が修復後も長く続き、難治性である。本研究では、GABAの抑制性の低下が、疼痛を起こすこと、その上流にはKCC2の発現低下、さらに、ミクログリアの活性化があることを突き止めた。これにより、いくつかの治療法の糸口が見えた。1つ目は、脊髄後角においてKCC2の機能を上げ、GABAの抑制性を強めることである。KCC2には複数の作用薬が知られており、その上流のミクログリアの働きを弱める方法も知られている。2つ目は、GABA作用薬を強くすることで、痛みを軽減させることである。実際にこれらの治療法が有効かを解析し、慢性疼痛に苦しむ患者への福音としたい。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (23 results)

All 2020 2019 2018 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 6 results,  Acknowledgement Compliant: 1 results) Presentation (17 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Development and persistence of neuropathic pain through microglial activation and KCC2 decreasing after mouse tibial nerve injury2020

    • Author(s)
      Kosaka Yoshinori、Yafuso Tsukasa、Shimizu-Okabe Chigusa、Kim Jeongtae、Kobayashi Shiori、Okura Nobuhiko、Ando Hironobu、Okabe Akihito、Takayama Chitoshi
    • Journal Title

      Brain Research

      Volume: 1733 Pages: 146718-146718

    • DOI

      10.1016/j.brainres.2020.146718

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hyper-formation of GABA and glycine co-releasing terminals in the mouse cerebellar nuclei after deprivation of GABAergic inputs from Purkinje cells.2020

    • Author(s)
      Kobayashi S, Kim J, Yanagawa Y, Suzuki N, Saito H, Takayama C.
    • Journal Title

      Neuroscience

      Volume: 426 Pages: 88-100

    • DOI

      10.1016/j.neuroscience.2019.11.030

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Embryonic development of GABAergic terminals in the mouse hypothalamic nuclei involved in feeding behavior2018

    • Author(s)
      Masato Kobayashi, Chigusa Shimizu-Okabe, Jeongtae Kim, Shiori Kobayashi, Masayuki Matsushita, Hiroaki Masuzaki, Chitoshi Takayama
    • Journal Title

      Neuroscience Research

      Volume: 17 Pages: 30313-30319

    • DOI

      10.1016/j.neures.2017.11.007

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Changes in the expression and localization of signaling molecules in mouse facial motor neurons during regeneration of facial nerves2018

    • Author(s)
      Jeongtae Kim, Shiori Kobayashi, Chigusa Shimizu-Okabe, Akihito Okabe, Changjong Moon, Taekyun Shin, Chitoshi Takayama
    • Journal Title

      Journal of Chemical Neuroanatomy

      Volume: 88 Pages: 13-21

    • DOI

      10.1016/j.jchemneu.2017.11.002

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of brown rice-specific γ-oryzanol on epigenetic modulation of dopamine D2 receptors in brain striatum in high-fat-diet-induced obesity in mice.2017

    • Author(s)
      Kozuka C, Kaname T, Shimizu-Okabe C, Takayama C, Tsutsui M, Matsushita M, Abe K, Masuzaki H
    • Journal Title

      Diabetologia

      Volume: 60 Issue: 8 Pages: 1502-1511

    • DOI

      10.1007/s00125-017-4305-4

    • NAID

      120006937804

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Marked augmentation of PLGA nanoparticle-induced metabolically beneficial impact of γ-oryzanol on fuel dyshomeostasis in genetically obese-diabetic ob/ob mice.2016

    • Author(s)
      Kozuka C, Shimizu-Okabe C, Takayama C, Nakano K, Morinaga H, Kinjo A, Fukuda K, Kamei A, Yasuoka A, Kondo T, Abe K, Egashira K, Masuzaki H.
    • Journal Title

      Drug Deliv.

      Volume: 24 Issue: 1 Pages: 558-568

    • DOI

      10.1080/10717544.2017.1279237

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 脊髄におけるグリシントランスポーター1の発達変化2020

    • Author(s)
      清水千草、小俣大輔、友寄竜司、岡野貴江、小林しおり、岡部明仁、高山千利
    • Organizer
      第97回 日本生理学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] KCC2の発現低下は、脛骨神経損傷による運動障害を軽減する2020

    • Author(s)
      安藤博之、屋冨祖司、小坂祥範、小林しおり、大倉信彦、清水千草、高山千利
    • Organizer
      第125回 日本解剖学会総会・全国学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] The expression pattern of glycine transporter 1 (GlyT1) during development in the spinal cord2019

    • Author(s)
      Chigusa Shimizu-Okabe, Ryuji Tomoyose, Kie Henzan, Shiori Kobayashi, Chitosi Takayama
    • Organizer
      NEURO2019、第42回日本神経科学大会、第62回日本神経化学会大会
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Relationship between changes in GABAergic action and peripheral neuropathic pain after mouse tibial nerve injury2019

    • Author(s)
      高山千利
    • Organizer
      第48回内藤コンファレンス
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 脊髄発達過程におけるグリシントランスポーター1(GlyT1)の発現変化2019

    • Author(s)
      清水千草、友寄竜司、平安山貴江、小林しおり、岡部明仁、高山千利
    • Organizer
      日本解剖学会第75回九州支部学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] K+-Cl-共輸送体(KCC2)の発現低下は、脛骨神経損傷による運動障害を軽減する2019

    • Author(s)
      安藤博之、屋冨祖司、小坂祥範、小林しおり、大倉信彦、清水千草、高山千利
    • Organizer
      日本解剖学会第75回九州支部学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Hyper-formation of GABA and glycine co-releasing terminals in the mouse cerebellar nuclei after deprivation of GABAergic inputs from Purkinje cells2019

    • Author(s)
      Shiori Kobayashi, Jeongtae Kim, Yuchio Yanagawa, Noboru Suzuki, Hiromitsu Saito, Chitoshi Takayama
    • Organizer
      2019 The 3rd Ryudai-OIST Symposium
    • Related Report
      2019 Annual Research Report
  • [Presentation] 脊髄におけるグリシントランスポーター1(GlyT1)の発達変化2019

    • Author(s)
      清水千草、平安山貴江、小林しおり、高山千利
    • Organizer
      第124回 日本解剖学会総会・全国学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] Distinct development of the glycinergic terminals in the ventral and dorsal horns of the mouse cervical spinal cord.2018

    • Author(s)
      Chigusa Shimizu, Masanobu Sunagawa, Shiori Kobayashi, Jeongtae Kim, Chitoshi Takayama
    • Organizer
      11th FENS ヨーロッパ神経科学学会
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Modulation of respiration-related activities activated by GABA and Cl- co-transporters in the perinatal mouse hypoglossal nucleus.2018

    • Author(s)
      Akihito Okabe, Chigusa Shimizu, Jongtae Kim, Shiori Kobayashi, Chitoshi Takayama
    • Organizer
      11th FENS ヨーロッパ神経科学学会
    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Re-arrangement of synaptic connections associated with altered inhibitory input of Purkinje cell-specific vesicular GABA transporter knockout mice.2018

    • Author(s)
      Shiori Kobayashi, Jeongtae Kim, Chigusa Shimizu-Okabe, Chitoshi Takayama
    • Organizer
      第41回日本神経科学大会
    • Related Report
      2018 Research-status Report 2017 Research-status Report
  • [Presentation] Promotion of lipid excretion and improvement of intestinal environment by wx/ae rice which is rich in resistant starch2018

    • Author(s)
      Chigusa Shimizu, Shiori Kobayashi, Hidetoshi Saze, Chisayo Kozuka, Yu Miyazaki, Shogo Arakaki, Yuta Ogura, Hiroaki Masuzaki, Jeongtae Kim, Akihito Okabe, Chitoshi Takayama
    • Organizer
      第95回日本生理学会大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 神経回路形成後にみられる入力変動にともなう抑制性入力の可塑的変化2018

    • Author(s)
      小林しおり、金正泰、清水千草、柳川右千夫、 高山千利
    • Organizer
      第123回日本解剖学会総会・全国学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] Distinct development of the glycinergic terminals in the ventral and dorsal horns of the mouse cervical spinal cord2018

    • Author(s)
      Chigusa Shimizu, Masanobu Sunagawa, Shiori Kobayashi, Jeongtae Kim, Chitoshi Takayama
    • Organizer
      11th FENS ヨーロッパ神経科学学会
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] マウス脛骨神経損傷モデルを用いた神経障害性疼痛とGABA伝達機構の変化2017

    • Author(s)
      Yoshinori Kosaka, Tsukasa Yafuso, Jeongtae Kim, Chigusa Shimizu, Akihito Okabe, Chitoshi Takayama
    • Organizer
      第40回日本神経科学大会
    • Related Report
      2017 Research-status Report
  • [Presentation] wx/ae米は腸内環境を改善し、脂質の排泄を促進する2017

    • Author(s)
      清水千草、小林しおり、佐瀬英俊、小塚智沙代、宮崎悠、新垣正悟、小倉裕太、益崎裕章、高山千利
    • Organizer
      第38回日本肥満学会
    • Related Report
      2017 Research-status Report
  • [Presentation] マウス脛骨神経損傷による疼痛の発生及び回復とGABA機能の変化2017

    • Author(s)
      小坂祥範、屋富祖司、金正泰、小林しおり、清水千草、高山千利
    • Organizer
      日本解剖学会第73回九州支部学術集会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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