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Analysis of glymphatic system dysfunction in normal pressure hydrocephalus.

Research Project

Project/Area Number 20K16650
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52030:Psychiatry-related
Research InstitutionNagasaki University

Principal Investigator

Morimoto Yoshiro  長崎大学, 医歯薬学総合研究科(医学系), 講師 (70816686)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords正常圧水頭症 / CFAP43 / CFAP43遺伝子 / グリンパティックシステム
Outline of Research at the Start

我々は、CFAP43遺伝子の機能喪失性変異により脳室内繊毛の微細構造異常が起こり、正常圧水頭症の原因となることを報告した。その研究の発端となった家系内では精神症状を高率で発症していたことから、髄液の灌流異常が精神症状の一因となる可能性が示唆された。本研究では、CFAP43遺伝子ノックアウトマウスの髄液クリアランス能(グリンパティックシステム)を評価することにより、正常圧水頭症の精神症状が生じるメカニズムを解明し、精神疾患に対する新たな診断・治療法の開発への臨床応用を目指す。

Outline of Final Research Achievements

First, we attempted to breed sufficient numbers of CFAP43 knockout mice in the analysis
However, 1) the probability of CFAP43 knockout mice becoming pregnant/being born is low 2) Even if they are born, they are eaten and killed by their mothers.Due to these circumstances, it was difficult to obtain a sufficient number of CFAP43 knockout mice for analysis, even after a considerable number of breeding attempts.Due to the limited number of CFAP43 knockout mice, an attempt was made to create a protocol to measure the ventricles of the brain using micro CT.However, 1) The brains and ventricles of the knockout mice were extremely small, making accurate delineation difficult. 2) Due to phenotypic differences at the individual level, there are no clear criteria for determining the degree of ventricular enlargement that constitutes "hydrocephalus".For these two reasons, it was difficult to measure ventricular enlargement in the mouse pups using micro-CT.

Academic Significance and Societal Importance of the Research Achievements

上記の解析を行う中で、CFAP43ノックアウトマウスにおける以下の特徴が示唆された。(1)個体・組織・細胞レベルにおいて、表現系が均一ではないこと。(2)CFAP43遺伝子は、ハプロ不全においても何らかの表現系を来たす可能性があること。
今後のCFAP43遺伝子の機能解析および表現系発現に繋がるメカニズムを解明するにあたっては、本研究において明かとなった上記2つの課題について取り組む必要があると考えられた。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (5 results)

All 2023 2022 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Clinical and Biological Overlap between Schizophrenia, Autism Spectrum Disorder, and Trauma and Stress-Related Disorders: The Three-Tree Model of SCZ-ASD-TSRD2023

    • Author(s)
      Shimizu Hitomi、Morimoto Yoshiro、Yamamoto Naoki、Kumazaki Hirokazu、Ozawa Hiroki、Imamura Akira
    • Journal Title

      Schizophrenia - Recent Advances and Patient-Centered Treatment Perspectives

      Volume: 1

    • DOI

      10.5772/intechopen.106004

    • ISBN
      9781803554051, 9781803554068
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intracranial calcification and psychotic symptoms after irradiation in a patient with Fanconi anemia: A case report2022

    • Author(s)
      Iki Soichiro、Shimizu Hitomi、Morimoto Yoshiro、Yamamoto Naoki、Ohashi Aiko、Tayama Tatsuyuki、Imamura Akira、Ozawa Hiroki
    • Journal Title

      Psychiatry and Clinical Neurosciences Reports

      Volume: 1 Issue: 2

    • DOI

      10.1002/pcn5.10

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Overlap Between Epilepsy and Neurodevelopmental Disorders: Insights from Clinical and Genetic Studies2022

    • Author(s)
      Shimizu Hitomi、Morimoto Yoshiro、Yamamoto Naoki、Tayama Tatsuyuki、Ozawa Hiroki、Imamura Akira
    • Journal Title

      Epilepsy(internet)

      Volume: 1 Pages: 41-54

    • DOI

      10.36255/exon-publications-epilepsy-neurodevelopmental-disorders

    • ISBN
      9780645332049
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A unique missense variant in the E1A-binding protein P400 gene is implicated in schizophrenia by whole-exome sequencing and mutant mouse models2021

    • Author(s)
      Yoshiro Morimoto, Shinji Ono, Shintaro Yoshida, Hiroyuki Mishima, Akira Kinoshita, Takeshi Tanaka, Yoshihiro Komohara, Naohiro Kurotaki, Tatsuya Kishino, Yuji Okazaki, Hiroki Ozawa, Koh-ichiro Yoshiura, Akira Imamura
    • Journal Title

      Translational Psychiatry

      Volume: 11 Issue: 1 Pages: 132-132

    • DOI

      10.1038/s41398-021-01258-1

    • NAID

      120007000270

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Patent(Industrial Property Rights)] 統合失調症の発症リスクを試験する方法、該方法に用いるキット、及び統合失調症のモデル哺乳動物2020

    • Inventor(s)
      吉浦孝一郎, 森本芳郎
    • Industrial Property Rights Holder
      吉浦孝一郎, 森本芳郎
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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