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2007 Fiscal Year Annual Research Report

大脳皮質体性感覚野における痛覚情報処理機構の解明

Research Project

Project/Area Number 17200027
Research InstitutionKyushu University

Principal Investigator

吉村 恵  Kyushu University, 大学院・医学研究院, 教授 (10140641)

Co-Investigator(Kenkyū-buntansha) 片渕 俊彦  九州大学, 大学院・医学研究院, 准教授 (80177401)
古江 秀昌  九州大学, 大学院・医学研究院, 助教 (20304884)
Keywords大脳皮質 / 体性感覚野 / EPSC / 同期化 / bursting / GABA / 脳波 / in vivo パッチクランプ
Research Abstract

痛覚情報は末梢から脊髄後角に入力し、修飾、統合を受けた後、視床を介して第一次体性感覚野に投射される。今までの研究から大脳皮質を欠損していても痛みを感じることが出来ることから視床のレベルで処理されていると考えられてきたが、PETやfMRIなどのイメージング技術の発達によってSIやSIIも痛み情報の処理に関与していることが明らかにされている。そこで、in vivoラット標本を用い、SIからパッチクランプ記録を行い末梢皮膚刺激によって誘起された応答がどのような処理を受けるかを解析した。記録を行った殆どの細胞でEPSCの重畳によるburstingが観察され、その頻度はEEGの頻度と一致した。このburstingはCNQXで抑制されること、視床にGABA_A受容体作動薬を投与することによって可逆的に抑制されることから、視床におけるGABAニューロンの発火が視床-大脳皮質投射ニューロンの同期化をコントロニルしていることが示唆された。皮膚に非侵害性の触刺激を加えるとburstingに重畳してEPSCの群発が観察された。機械的痛み刺激を加えた時にも同様にEPSCの重畳が見られた。しかしながらそれらのEPSCの振幅は活動電位を発生するには十分ではなかった。また、その頻度も低かった。脊髄後角細胞からのパッチクランプ記録では十分な振幅のEPSCが観察され、current clamp条件下では活動電位を惹起した。これらの事から、痛覚情報は脊髄から視床、大脳皮質と伝達されるにつれ、より要素的なものに変換され大脳皮質に伝えられている可能性が考えられた。また、麻酔薬の濃度を下げるとその頻度および振幅が増大することから麻酔薬による抑制作用も否定できず、今後無麻酔条件下での解析が必要と考えられる。

  • Research Products

    (42 results)

All 2008 2007

All Journal Article (9 results) (of which Peer Reviewed: 6 results) Presentation (31 results) Book (2 results)

  • [Journal Article] Cell type specific excitatory and inhibitory circuits involving primary afferents in the substantia gelatinosa of the rat spinal dorsal horn in vitro.2007

    • Author(s)
      Yasaka T., et. al.
    • Journal Title

      Journal of Physiology(London) 581(2)

      Pages: 603-618

    • Peer Reviewed
  • [Journal Article] Involvement of Kv channel subtypes on GABA release in mechanically dissociated neurons from the rat substantia nigra.2007

    • Author(s)
      Shimada H., et. al.
    • Journal Title

      Brain Research 1141

      Pages: 74-83

    • Peer Reviewed
  • [Journal Article] Slow oscillation of membrane currents mediated by glutamatergic inputs of rat somatosensory cortical neurons: in vivo patch-clamp analysis.2007

    • Author(s)
      Doi A., et. al.
    • Journal Title

      European Journal of Neuroscience 26(9)

      Pages: 2565-2575

    • Peer Reviewed
  • [Journal Article] Reduced pain behaviors and extracellular signal-related protein kinase activation in primary sensory neurons by peripheral tissue injury in mice lacking platelet-activating factor receptor.2007

    • Author(s)
      Tsuda M., et. al.
    • Journal Title

      Journal of Neurochemistry 102(5)

      Pages: 1658-1668

    • Peer Reviewed
  • [Journal Article] 感覚回路の再生と慢性疼痛2007

    • Author(s)
      吉村 恵
    • Journal Title

      脊椎脊髄ジャーナル 20(8)

      Pages: 879-880

  • [Journal Article] Analysis of hypnotic or analgesic effect of anesthetic agents by in-vivo patch clamp recordings from somatosensory cortex in rats.2007

    • Author(s)
      Shiokawa H., et. al.
    • Journal Title

      麻酔 56

      Pages: S99-107

    • Peer Reviewed
  • [Journal Article] Function of spinal GABA receptor and its modulation.2007

    • Author(s)
      Yoshimura M., et. al.
    • Journal Title

      麻酔 56

      Pages: S141-151

    • Peer Reviewed
  • [Journal Article] Recent insights into mechanisms for analgesic effect by calcitonin2007

    • Author(s)
      Ito A., et. al.
    • Journal Title

      日本臨床 65(S9)

      Pages: 386-390

  • [Journal Article] Chronic pain and neurotrophic factor.2007

    • Author(s)
      Yoshimura M.
    • Journal Title

      医学のあゆみ 223(9)

      Pages: 687-691

  • [Presentation] Increased mechanical synaptic inputs to the rat spinal dorsal horn in vivo following inflammation.2008

    • Author(s)
      Furue H., et. al.
    • Organizer
      The 85th Annual Meeting of the Physiological Society of Japan
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      20080325-27
  • [Presentation] Selective modulation of excitatory synaptic transmission in excitatory interneurons in the adult rat spinal dorsal horn through TRPA1 agonist-sensitive C fibres2008

    • Author(s)
      Uta D., et. al.
    • Organizer
      The 85th Annual Meeting of the Physiological Society of Japan
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      20080325-27
  • [Presentation] In vivo intracellular recording analysis of itch signal transduction in rat dorsal root ganglion cells.2008

    • Author(s)
      Hachisuka J., et. al.
    • Organizer
      The 85th Annual Meeting of the Physiological Society of Japan
    • Place of Presentation
      Tokyo,Japan
    • Year and Date
      20080325-27
  • [Presentation] 成熟ラットの後根神経節細胞を用いた局所麻酔薬の活動電位抑制効果の比較2008

    • Author(s)
      歌 大介, et. al.
    • Organizer
      第30回脊髄機能診断学研究会
    • Place of Presentation
      東京
    • Year and Date
      2008-02-02
  • [Presentation] ガン性癒痛モデルにおける痛覚伝達系異常の行動学的および電気生理学的解析2008

    • Author(s)
      柳澤 義和, et. al.
    • Organizer
      第30回脊髄機能診断学研究会
    • Place of Presentation
      東京
    • Year and Date
      2008-02-02
  • [Presentation] Central sensitization induced by switching of subunit in AMPA receptor following inflammatory pain2007

    • Author(s)
      Katano T., et. al.
    • Organizer
      The 30th Annual Meeting of the Molecular Biology Society of Japan and The 80th Annual Meeting of the Japanese Biochemical Society
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      20071211-15
  • [Presentation] Functional loss of synaptic inputs to spinal superficial dorsal horn neurons through cold-sensitive afferent fibers in cadherin-8 deficient mice2007

    • Author(s)
      Furue H., et. al.
    • Organizer
      The 7th Japan-Korea Joint Symposium of Brain Sciences, and Cardiac and Smooth Muscles
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      20071208-10
  • [Presentation] Modulation of sensory inputs from inflamed region to the primary sensory cortex2007

    • Author(s)
      Yoshimura M, Koga K and Furue H.
    • Organizer
      The 2nd International Symposium on Design of Artificial Environments
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      20071129-1201
  • [Presentation] Increased noxious mechanical synaptic inputs to the rat spinal dorsal horn from A delta and C fibers: in vivo patch-clamp and intracellular recordings from spinal an ddorsal root ganglionn eurons2007

    • Author(s)
      Hachisuka J., et. al.
    • Organizer
      The 37th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      San Diego, USA
    • Year and Date
      20071103-07
  • [Presentation] The effects of momoamines on lumber motoneurons in transverse slices from young adult rat using whole-cell patch-clamp recording2007

    • Author(s)
      Hisamitsu R., et. al.
    • Organizer
      The 37th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      San Diego, USA
    • Year and Date
      20071103-07
  • [Presentation] Electrophysiological and morphological analyzes of excitatory effect of TRPAl agonists on synaptic transmission in substantia gelatinosa neurons of the adult rat spinal cord2007

    • Author(s)
      Uta D., et. al.
    • Organizer
      The 37th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      San Diego, USA
    • Year and Date
      20071103-07
  • [Presentation] In vivo and slice patch-clamp analyses of plastic changes in descending inhibition of spinal noxious mechanical synaptic transmission in ovariectomized rats.2007

    • Author(s)
      Furue H., et. al.
    • Organizer
      The 37th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      San Diego, USA
    • Year and Date
      20071103-07
  • [Presentation] Intra-and translaminar neuronal connectivity of superficial spinal dorsal hornneurons demonstrated by laser scanning photostimulation.2007

    • Author(s)
      Kato G., et. al.
    • Organizer
      The 37th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      San Diego, USA
    • Year and Date
      20071103-07
  • [Presentation] Cortical membrane potential fluctuations may be modified by thalamocortical inputs in rat barrel cortexm vivo2007

    • Author(s)
      Mizuno M., et. al.
    • Organizer
      The 37th Annual Meeting of the Society for Neuroscience
    • Place of Presentation
      San Diego, USA
    • Year and Date
      20071103-07
  • [Presentation] Behavioral and electrophysiological analyses of spinal nociceptive transmission in a murine model of cancer-induced bone pain2007

    • Author(s)
      Yanagizawa Y., et. al.
    • Organizer
      The 22nd Annual Research Meeting of the Japanese Orthopaedic Association
    • Place of Presentation
      Shizuoka, Japan
    • Year and Date
      20071025-26
  • [Presentation] ラット後根神経節細胞からのin vivo細胞内記録法開発-痒みのシグナル伝達の解析-.2007

    • Author(s)
      蜂須賀 淳一, et. al.
    • Organizer
      第58回西日本生理学会
    • Place of Presentation
      福岡
    • Year and Date
      20071019-20
  • [Presentation] 炎症ラット脊髄膠様質におけるAMPA受容体Ca2+透過性の可塑的変化-In vivoパッチクランプ法を用いた解析-2007

    • Author(s)
      古江 秀昌, et. al.
    • Organizer
      第58回西日本生理学会
    • Place of Presentation
      福岡
    • Year and Date
      20071019-20
  • [Presentation] In vivo patch clamp analysis of synaptic responses evoked in primary somatosensory cortex in inflamed rats2007

    • Author(s)
      Koga K, Shiokawa H, Mizuno M, Doi A, Takase-Mizuguchi H, Furue H and Yoshimura M.
    • Organizer
      The 30th Annual Meeting of the Japan Neuroscience Society
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      20070910-12
  • [Presentation] Plastic modification of TRP channel activities in the spinal dorsal horn following peripheral nerve injury2007

    • Author(s)
      Yoshimura M., et. al.
    • Organizer
      The 30th Annual Meeting of the Japan Neuroscience Society
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      20070910-12
  • [Presentation] Impairment of afferent synaptic inputs for mechanical and cold sensation to substantia gelationsa neurons of the rat spinal dorsal hom through cadherin-8 expressing synaptic glomeruli.2007

    • Author(s)
      Furue H., et. al.
    • Organizer
      The 30th Annual Meeting of the Japan Neuroscience Society
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      20070910-12
  • [Presentation] In vivo patch-clamp analysis of plastic changes in descending serotonergic inhibition of noxious mechanical transmission to substantia gelatiosa neurons through 5-HT1A receptors in ovariectomized rats.2007

    • Author(s)
      Omori Y., et. al.
    • Organizer
      The 30th Annual Meeting of the Japan Neuroscience Society
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      20070910-12
  • [Presentation] Patch-clamp analysis of membrane properties of bursting neurons in the young adult rat ventral horn in vitro.2007

    • Author(s)
      Hisamitsu R., et. al.
    • Organizer
      The 30th Annual Meeting of the Japan Neuroscience Society
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      20070910-12
  • [Presentation] Analogy of A-beta afferents termination in pathological conditions with immature state.2007

    • Author(s)
      Yoshimura M., et. al.
    • Organizer
      Second International Congress on Neuropathic Pain
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      20070607-10
  • [Presentation] Modification of bursting activities in somatosensory cortex in inflamed-rats in vivo2007

    • Author(s)
      Koga K, et. al.
    • Organizer
      Second International Congress on Neuropathic Pain
    • Place of Presentation
      Berlin, -Germany
    • Year and Date
      20070607-10
  • [Presentation] Serotonin system in poly I:C-induced fatigue model in rats2007

    • Author(s)
      Katafuchi T., et. al.
    • Organizer
      International Symposium: Interaction of the nervous and immune systems in health and diseas
    • Place of Presentation
      St.Petersburg, Russia
    • Year and Date
      20070531-0602
  • [Presentation] Functional role of GABA receptor and its modification in the spinal dorsal horn2007

    • Author(s)
      Yoshimura M., et. al.
    • Organizer
      The 54th Annual Meeting of Japanese Society of Anesthesiologists
    • Place of Presentation
      Sapporo, Japan
    • Year and Date
      20070531-0602
  • [Presentation] Analysis of hypnotic or analgesic effect of anesthetic agents by in-vivo patch clamp recordings from somatosensory cortex in rats.2007

    • Author(s)
      Shiokawa H., et. al.
    • Organizer
      The 54th Annual Meeting of Japanese Society of Anesthesiologists
    • Place of Presentation
      Sapporo, Japan
    • Year and Date
      20070531-0602
  • [Presentation] In vivo intracellular recording analysis of action potentials elicited by 5-HT-induced itch stimuli in rat dorsal root ganelion neurons2007

    • Author(s)
      Hachisuka J., et. al.
    • Organizer
      17th International Symposium of Itch
    • Place of Presentation
      Osaka, Japan
    • Year and Date
      2007-09-15
  • [Presentation] Activation of TRPA1 reduces C afferent-evoked excitatory synaptic transmission but enhances the miniature release in substantia gelatinosa of the adult rat spinal cord2007

    • Author(s)
      Uta D., et. al.
    • Organizer
      The 29th Annual Meeting of JASP
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      2007-07-07
  • [Presentation] Electrophysiotogical analysis of effects of Neurotropin on serotonergic neurons in the Nucleus Raphe Magnus.2007

    • Author(s)
      Okai H., et. al.
    • Organizer
      The 29th Annual Meeting of JASP
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      2007-07-07
  • [Presentation] In vivoパッチクランプ記録法を用いた下行性痛覚伝達系の作用機序-シナプス前抑制vsシナプス後抑制-.2007

    • Author(s)
      吉村 恵
    • Organizer
      第21回日本ニューロモデュレーション学会
    • Place of Presentation
      東京
    • Year and Date
      2007-05-12
  • [Book] Patch-Clamp Analysis:advanced techniques2007

    • Author(s)
      Furue H., et. al.
    • Total Pages
      475
    • Publisher
      Humana Press
  • [Book] 人工環境デザインハンドブック2007

    • Author(s)
      片渕 俊彦, et. al.
    • Total Pages
      461
    • Publisher
      丸善

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Published: 2010-02-04   Modified: 2016-04-21  

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