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Mechanism of REM sleep behavior disorder in glycine receptor-deficient mice

Research Project

Project/Area Number 16K18987
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field General physiology
Research InstitutionUniversity of Tsukuba

Principal Investigator

Hondo Mari  筑波大学, 国際統合睡眠医科学研究機構, 研究員 (70639195)

Project Period (FY) 2016-04-01 – 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: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsレム睡眠行動障害 / グリシン / 前運動ニューロン / レム睡眠行動異常症(RBD) / オレキシン / レム睡眠 / グリシン受容体 / 睡眠覚醒 / レム睡眠行動異常症 / 神経科学
Outline of Final Research Achievements

REM sleep behavior disorder (RBD) is a REM sleep parasomnia characterized by a loss of REM atonia and accompanied by high probability for developing α-synuclein disorders. To study the neuronal mechanism of RBD and find new drug targets, a good genetic model of RBD would be useful. In this study, we evaluated a novel RBD model, which is developed by a specific deletion of glycinergic transmission on cholinergic neurons. Mice with selective deletion of glycine receptors in cholinergic neurons displayed excessive body and limb movements during REM sleep, including jerking, kicking, punching, and chewing, behaviors that resemble human RBD.

Academic Significance and Societal Importance of the Research Achievements

RBDは、神経変性疾患の初期症状であると考えられており、この初期症状を制御することで病気の進展を予防できるのではないかといった考えから、その全容解明が非常に期待されている。本研究では新規にターゲットを絞った遺伝子改変マウスを作成し、RBDの発症にはグリシン単独の作用で十分であることを初めて示した。RBDの発現メカニズムが明らかになれば、RBDから進展する神経変性疾患のより効果的な治療・予防法を提案することが可能となり、現代社会が問題とする健康寿命延伸に対する社会的貢献度は極めて大きいといえることから、今後さらにその詳細を明らかにしていきたい。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (2 results)

All 2020 2018

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results)

  • [Journal Article] a-Synuclein BAC transgenic mice exhibit RBD-like behaviour and hyposmia:a prodromal Parkinson’s disease model2020

    • Author(s)
      Taguchi T, Ikuno M, Hondo M, Parajuli LK, Taguchi K, Ueda J, Sawamura M, Okuda S, Nakanishi E, Hara J, Uemura N, Hatanaka Y, Ayaki T, Matsuzawa S, Tanaka M, El-Agnaf OMA, Koike M, Yanagisawa M, Uemura MT, Yamakado H, Takahashi R
    • Journal Title

      BRAIN

      Volume: 143 Issue: 1 Pages: 249-265

    • DOI

      10.1093/brain/awz380

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 特集・睡眠医科学 レム睡眠行動障害(RBD)のしくみ2018

    • Author(s)
      本堂茉莉、上田壮志
    • Journal Title

      分子精神医学

      Volume: 18(4) Pages: 34-41

    • Related Report
      2018 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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