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Effect of environmental enrichment on neonatal white matter injury in rat

Research Project

Project/Area Number 17K16303
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Embryonic/Neonatal medicine
Research InstitutionNagoya City University

Principal Investigator

Ueda Yoshitomo  名古屋市立大学, 医薬学総合研究院(医学), 研究員 (30758420)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords低酸素虚血性白質傷害 / 豊かな環境飼育 / 皮質内微小電気刺激 / 水平梯子歩行試験 / 運動マップ / 皮質興奮性 / リハビリテーション / ゴルジ染色 / 大脳皮質 / 低酸素虚血性白質障害 / 小児期リハビリテーション / インスリン様成長因子2型 / 発達期白質障害 / 脳室周囲白質軟化症(PVL) / 皮質内微小刺激(ICMS) / インスリン様成長因子2(IGF-2)
Outline of Final Research Achievements

The effect of environmental enrichment (EE), which is considered as a basic model for the research of children rehabilitation, was examined in a rat model of neonatal white matter injury (NWMI) from the aspect of the recovery of disturbed motor functions and the electrophysiological response to intracerebral microstimulation (ICMS).we found that EE from postnatal day 25th for 5 weeks in the model cause functional recovery of disturbed motor functions (beam walk ability test, horizontal ladder test, hindlimb retraction test), the expansion of motor map comparable to normal rat, and normalization of the threshold of the cortex to ICMS. Thus, the effect of EE on NWMI was clearly revealed by our experiments.

Academic Significance and Societal Importance of the Research Achievements

ラットを用いた本研究は、動物レベルにおいて発育期のリハビリテーションが障害された運動機能を改善すること、またそれを裏付ける電気生理学的な証拠が確実に示された。今後このメカニズムを詳細に動物レベルで解析を進めて行くことによって、新生児低酸素虚血性白質傷害に対する小児期のリハビリテーションが効果を持つことという事実を科学的な証明を与えることに繋がり、ヒトへの本実験結果の還元が期待される。また、薬剤などによる効果を調べていくことにより、更なる治療効果の展開へと繋がる。

Report

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

    (12 results)

All 2020 2019 2018 2017

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (8 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Dynamic Interaction between Cortico-Brainstem Pathways during Training-Induced Recovery in Stroke Model Rats2019

    • Author(s)
      Ishida A, Kobayashi K, Ueda Y, Shimizu T, Tajiri N, Isa T, Hida H
    • Journal Title

      J Neurosci

      Volume: 39 Issue: 37 Pages: 7306-7320

    • DOI

      10.1523/jneurosci.0649-19.2019

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Alterations of both dendrite morphology and weaker electrical responsiveness in the cortex of hip area occur before rearrangement of the motor map in neonatal white matter injury model rats2018

    • Author(s)
      Ueda Y, Bando Y, Misumi S, Ogawa S, Ishida A, Jung CG, Shimizu T, Hida H
    • Journal Title

      Frontiers in Neurology

      Volume: 9 Pages: 443-443

    • DOI

      10.3389/fneur.2018.00443

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Monosodium glutamate ingestion during the development period reduces aggression mediated by the vagus nerve in a rat model of attention deficit hyperactivity disorder2018

    • Author(s)
      Nishigaki R, Yokoyama Y, Shimizu Y, Marumoto R, Misumi S, Ueda Y, Ishida A, Shibuya Y, Hida H
    • Journal Title

      Brain Research

      Volume: 1690 Pages: 40-50

    • DOI

      10.1016/j.brainres.2018.04.006

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Disorganization of oligodendrocyte development in the layer II/III of the sensorimotor cortex causes motor coordination dysfunction in a model of white matter injury in neonatal rats2018

    • Author(s)
      Ueda Y, Misumi S, Suzuki M, Ogawa S, Nishigaki R, Ishida A, Cha-Gyun Jung, Hida H.
    • Journal Title

      Neurochemical Research

      Volume: 43(1) Issue: 1 Pages: 127-37

    • DOI

      10.1007/s11064-017-2352-3

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Enriched environment affects neuronal dendrite morphology and oligodendrocyte differentiation in neonatal white matter injury model2020

    • Author(s)
      Atsunori Hattori, Naoki Tajiri, Yoshitomo Ueda, Akimasa Ishida, Takeshi Shimizu, Hideki Hida
    • Organizer
      日本生理学会2020
    • Related Report
      2019 Annual Research Report
  • [Presentation] Effect of environmental enrichment on neonatal white matter injury in rat2019

    • Author(s)
      Atsunori Hattori, Yoshitomo Ueda, Naoki Tajiri, Shino Ogawa, Akimasa Ishida, Takeshi Shimizu, Hideki Hida
    • Organizer
      日本神経科学会2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] Functional recovery by enriched environment in neonatal white matter injury: evidence from morphological and electrophysiological assessments2019

    • Author(s)
      Atsunori Hattori, Yoshitomo Ueda, Naoki Tajiri, Hideki Hida
    • Organizer
      Society for Neuroscience 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Enriched environment during the period of development attenuates hindlimb dysfunction in neonatal white matter injury model2019

    • Author(s)
      Tajiri N, Hattori A, Ueda Y, Ogawa S, Ishida, A, Shimizu T, Hida H
    • Organizer
      第96回日本生理学会 / FAOPS 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Insulin-like growth factor-2, an increasing factor in neonatal white matter injury brain, promotes the differentiation of oligodendrocyte progenitor cells in vitro2018

    • Author(s)
      Ogawa S, Hagiwara M, Shimizu T, Ueda, Y, Misumi S, Ishida A, Hida H.
    • Organizer
      ASNTR-25/INTR-15
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 発育期の豊かな環境飼育が新生児低酸素虚血性白質障害モデルラットに与える影響2018

    • Author(s)
      服部篤紀,田尻直輝,上田佳朋, 小川紫野, 石田章真、清水健史、飛田秀樹
    • Organizer
      中部日本生理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Insulin-like growth factor-2, an increasing factor in neonatal white matter injury brain, promotes the differentiation of oligodendrocyte progenitor cells in vitro2018

    • Author(s)
      Ogawa S, Hagiwara M, Shimizu T, Ueda, Y, Misumi S, Ishida A, Hida H
    • Organizer
      ASNTR-25/INTR-15
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Caspar-positive cell decrease and dendritic morphological change in the sensorimotor cortex are related to motor coordination dysfunction in neonatal white matter injury model rat2017

    • Author(s)
      Ueda Y, Bando Y, Misumi S, Ishida A, Hida H.
    • Organizer
      Neuroscience 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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

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