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Exploration of the non-systematic organizing principle of the brain that coexists with and share the same tissue space with the systematic organizing priciple

Research Project

Project/Area Number 16KT0174
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section特設分野
Research Field Constructive Systems Biology
Research InstitutionKumamoto University

Principal Investigator

Fukuda Takaichi  熊本大学, 大学院生命科学研究部(医), 教授 (50253414)

Research Collaborator Shigematsu Naoki  
Project Period (FY) 2016-07-19 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsGABA / インターニューロン / ギャップ結合 / 海馬 / 歯状回 / 介在ニューロン / パルブアルブミン / 樹状突起 / 細胞構築 / gap junction / カラム / 大脳皮質 / 神経科学 / 脳の構成原理 / ランダム
Outline of Final Research Achievements

Distribution pattern of parvalbumin (PV)-positive neurons that are major GABAergic interneurons in the hippocampus and neocortex was explored using immunohistochemical method and mathematical analysis. PV neurons in the CA1 region of the hippocampus were distributed in both the stratum pyramidale and a thin lamina at the border between the stratum oriens and alveus. Somata of the latter population showed a random pattern with their dendrites extending in the same lamina and forming gap junction-coupled plexus. PV neurons in the dentate gyrus were also distributed in a thin lamina between the granule cell layer and hilus, showed a random pattern, and formed gap junction-coupled dendritic nets in the lamina. These structures are thought to facilitate flexible regulation of neuronal activities involved in memory formation.

Academic Significance and Societal Importance of the Research Achievements

これまでの神経科学は、脳における情報処理過程の解明において、その緻密な秩序的構成に注目して解析が行われてきた。しかしながら、情報処理を担うニューロン群と並立する制御システムニューロン(GABA作動性インターニューロン)の解剖学的構造は、むしろ無秩序性に基づいた構成原理を示唆している。本研究は、このことをマウスの海馬において明らかにし、記憶形成回路に革新的見方をもたらした。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (9 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results)

  • [Journal Article] Gap Junctions Interconnect Different Subtypes of Parvalbumin-Positive Interneurons in Barrels and Septa with Connectivity Unique to Each Subtype.2018

    • Author(s)
      Shigematsu N, Nishi A, Fukuda T
    • Journal Title

      Cerebral Cortex

      Volume: in press Issue: 4 Pages: 1414-1429

    • DOI

      10.1093/cercor/bhy038

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Structural organization of dendritic reticulum linked by gap junctions in layer 4 of the visual cortex2017

    • Author(s)
      Fukuda T
    • Journal Title

      Neuroscience

      Volume: 340 Pages: 76-90

    • DOI

      10.1016/j.neuroscience.2016.10.050

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 海馬と新皮質の制御系を構成するGABAニューロンがギャップ結合を介して連結するネットワークを既知の神経回路にいかに組み込むか?2019

    • Author(s)
      福田孝一
    • Organizer
      第124回日本解剖学会総会・全国学術集会シンポジウム
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 体性感覚野ミニバレル領域におけるパルブアルブミン陽性ニューロンの分布と形態の3次元的解析2019

    • Author(s)
      重松直樹、福田孝一
    • Organizer
      第124回日本解剖学会総会・全国学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 形と機能の本質に迫るためのさまざまな顕微鏡解析技法2018

    • Author(s)
      福田孝一
    • Organizer
      第60回日本顕微鏡学会九州支部集会・学術講演会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Gap junctions mediate the connectivity among different subtypes of parvalbumin-positive interneurons in layer 4 of the mouse barrel cortex.2018

    • Author(s)
      Naoki Shigematsu, Takaichi Fukuda
    • Organizer
      Neuroscience 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gap junctions mediate the connectivity among different subtypes of parvalbumin-positive interneurons in layer 4 of the mouse barrel cortex2018

    • Author(s)
      Shigematsu N, Nishi A, Fukuda T
    • Organizer
      Neuroscience 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] マウス1次体性感覚野におけるバレル局在型パルブアルブミン陽性ニューロンに対する視床ー皮質間入力の分布様式2018

    • Author(s)
      重松直樹、福田孝一
    • 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] 連続切片三次元再構築の威力2016

    • Author(s)
      福田孝一
    • Organizer
      第48回に本臨床分子形態学会総会・学術集会
    • Place of Presentation
      熊本市
    • Year and Date
      2016-09-23
    • Related Report
      2016 Research-status Report
    • Invited

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Published: 2016-07-20   Modified: 2023-03-08  

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