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Analysis of compensatory primary sensory projections in a neonatal rat spinal cord transection model

Research Project

Project/Area Number 16K07030
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Nerve anatomy/Neuropathology
Research InstitutionYokohama City University

Principal Investigator

Funakoshi Kengo  横浜市立大学, 医学研究科, 教授 (60291572)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords脊髄損傷 / 一次感覚神経 / 後根神経節 / 運動ニューロン / コンドロイチン硫酸 / ペリニューロナルネット / 神経科学 / 解剖学 / 再生医学 / 細胞・組織
Outline of Final Research Achievements

In neonatal rats whose spinal cord has been transected, spontaneous recovery of hindlimb motor function is concurrent with an increase in nerve projections from the periphery to the motor area of the spinal cord. Around the motor neurons, an extracellular matrix called the perineuronal net regulates synaptic plasticity. We clarified that changes in chondroitin sulfate, the main component of the perineuronal net, were related to the ability of sensory inputs to induce recovery of motor function.

Academic Significance and Societal Importance of the Research Achievements

損傷された中枢神経系の機能をいかに回復させるかは、重要な医学的課題の一つであり、国内外でさまざまな取り組みがなされている。本研究の結果は、脊髄損傷からの運動機能の回復においては、末梢から脊髄への感覚入力の増加と、運動領域における細胞外マトリックスの変化が重要な役割を担っていることを示唆するものである。本研究の成果は、成人の脊髄損傷の画期的な治療法の開発につながる可能性を秘めている。

Report

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

    (5 results)

All 2018 2017 2016

All Presentation (5 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Presentation] Changes in primary afferent fiber projections and motoneuronal perineuronal nets after spinal cord transection of juvenille rats2018

    • Author(s)
      Masahito Takiguchi, Yoshihiko Ikeda, Kengo Katsuki, Takashi Akaike, Kaoru Shindo, Kengo Funakoshi
    • Organizer
      8th Asia Pacific International Congress of Anatomists
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 幼若期脊髄損傷モデルラットにおける一次知覚線維とペリニューロナルネットの解析2018

    • Author(s)
      赤池隆, 新藤薫, 宮下郁苗, 池田佳彦, 香月健吾, 滝口雅人,船越健悟
    • Organizer
      日本解剖学会全国学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] Compensatory primary sensory projections after neonatal spinal transection2017

    • Author(s)
      Funakoshi K
    • Organizer
      BIT's 8th Annual World Congress of NeuroTalk - 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Compensatory primary sensory projections after neonatal spinal transection.2016

    • Author(s)
      Funakoshi K
    • Organizer
      Dubai International Healthcare Summit-2016
    • Place of Presentation
      Dubai, UAE
    • Year and Date
      2016-10-18
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 新生仔期及び幼若期脊髄損傷ラットにおける一次知覚線維の脊髄への投射による後肢運動の機能代償メカニズムの解析2016

    • Author(s)
      池田佳彦, 香月健吾, 丁一澤, 宮下郁苗, 武田昭仁, 滝口雅人, 船越健悟
    • Organizer
      日本解剖学会関東支部第104回学術集会
    • Place of Presentation
      横浜市立大学八景キャンパス(神奈川県横浜市)
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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