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Challenge to identifying the chronification processes of fatigue and anti-fatigue and health strategies

Research Project

Project/Area Number 20K21777
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 59:Sports sciences, physical education, health sciences, and related fields
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

CUI Yilong  国立研究開発法人理化学研究所, 生命機能科学研究センター, チームリーダー (60312229)

Co-Investigator(Kenkyū-buntansha) 鈴木 治和  国立研究開発法人理化学研究所, 生命医科学研究センター, 副センター長 (80333293)
Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords疲労 / ストレス / 恒常性 / 神経・内分泌・免疫 / トランスクリプトーム解析 / 脳内炎症 / 脳腸相関 / PET / 恒常性破綻 / 慢性疲労 / 未病 / 先制医療
Outline of Research at the Start

本研究では、日常的な疲労蓄積から徐々に慢性疲労に陥るプロセスを再現した慢性疲労動物モデルを用いて、体温・睡眠・循環機能・活動量・自律神経機能などの生体信号を経時的に連続記録し、慢性疲労に陥る臨界期を同定する。また、トランスクリプトームなどの網羅的な検討を行い、慢性化に陥る特徴的なバイオマーカーや関連の分子プロセスを探索する。更には、それらの分子プロセスの動態を非侵襲的なPETイメージングで経時的に解析すると同時に、その分子プロセスを制御可能な有効な方法論を探索し、抗疲労・健康戦略の創出に挑戦する。

Outline of Final Research Achievements

In the present study, we investigated functional changes in sleep and body temperature regulation systems with chronification processes in a unique chronic fatigue animal model, in which repeated short-term rest periods during the long-lasting fatigue loading were utilized for gradual disruption of homeostatic function and accumulation of fatigue. We found that the sleep- and thermoregulatory functions adaptively changed in the early phase of fatigue loading, but disrupted in the late phase. Especially, the autonomic heat dissipation appeared at a lower body temperature rather than a higher body temperature in the late phase, indicating thermoregulatory dysfunction. Furthermore, we also demonstrated that the chronification of fatigue might be associated with increased oxidative stress and elevated levels of inflammatory cytokines, such as Il-1β

Academic Significance and Societal Importance of the Research Achievements

疲労は日常生活の中で誰もが経験する主観的な感覚であるが、その実態は未だに不明で詳細な分子神経基盤も明らかになっていない。昨今のコロナ感染後の後遺症として最も頻繁に訴える症状が倦怠感であるが、有効な緩和・治療法は確立されていない。本研究では病的な慢性疲労の背景には、睡眠・体温調節などの恒常性維持機構の異常が関わっていること、また全身性の酸化トレスや炎症反応の活性化が関与しており、倦怠感惹起には脳内の炎症が深く関わっている可能性を示唆した。これらの結果は疲労の分子神経生物学的な基盤の解明に科学的な根拠を示し、コロナ感染後の倦怠感の緩和・治療法の確立に重要な実験データを提供していると考えられる。

Report

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

    (9 results)

All 2023 2022 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (4 results) (of which Invited: 1 results)

  • [Journal Article] Synthesis of 11C-Radiolabeled Eribulin as a Companion Diagnostics PET Tracer for Brain Glioblastoma2023

    • Author(s)
      Niwa T., Tahara T., Chase C.E., Fang F.G., Nakaoka T., Irie S., Hayashinaka, E. Wada Y., Mukai H., Masutomi K., Watanabe Y., Cui Y.L., Hosoya T
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 96 Issue: 3 Pages: 283-283

    • DOI

      10.1246/bcsj.20220335

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrolyzed hydrogen water alleviates abdominal pain through suppression of colonic tissue inflammation in a rat model of inflammatory bowel disease2022

    • Author(s)
      Hu D, Huang T., Shigeta M., Ochi Y., Kabayama S., Watanabe Y., Cui Y.L.
    • Journal Title

      Nutrients

      Volume: 14 Issue: 21 Pages: 4451-4451

    • DOI

      10.3390/nu14214451

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] <i>N</i>-Methylamide-structured SB366791 derivatives with high TRPV1 antagonistic activity: toward PET radiotracers to visualize TRPV12022

    • Author(s)
      Kida Tatsuya、Takahashi Nobuaki、Mori Masayuki X.、Sun Jiacheng H.、Oota Hideto、Nishino Kosuke、Okauchi Takashi、Ochi Yuta、Kano Daisuke、Tateishi Ukihide、Watanabe Yasuyoshi、Cui Yilong、Mori Yasuo、Doi Hisashi
    • Journal Title

      RSC Medicinal Chemistry

      Volume: 13 Issue: 10 Pages: 1197-1204

    • DOI

      10.1039/d2md00158f

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Alleviation of the chronic stress response attributed to the antioxidant and anti-inflammatory effects of electrolyzed hydrogen water2021

    • Author(s)
      Hu Di、Li Danxi、Shigeta Mika、Ochi Yuta、Okauchi Takashi、Neyama Hiroyuki、Kabayama Shigeru、Watanabe Yasuyoshi、Cui Yilong
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 535 Pages: 1-5

    • DOI

      10.1016/j.bbrc.2020.12.035

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Homeostatic disturbance of thermoregulatory functions in rats with chronic fatigue2020

    • Author(s)
      Li D, Hu D, Shigeta M, Ochi Y. Watanabe Y, Li F, Cui YL
    • Journal Title

      Neuroscience Research

      Volume: in press Pages: 45-50

    • DOI

      10.1016/j.neures.2020.04.005

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 疲労の慢性化と神経・内分泌・免疫機能の破綻について2022

    • Author(s)
      崔翼龍、胡迪、渡辺恭良
    • Organizer
      第18回日本疲労学会総会・学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 疲労の慢性化およびその分子神経メカニズムについて2021

    • Author(s)
      崔翼龍、胡迪、渡辺恭良
    • Organizer
      第17回日本疲労学会総会・学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 慢性疲労動物を用いた疲労の慢性化機序解析2021

    • Author(s)
      胡迪、李丹渓、重田美香、越智祐太、渡辺恭良、崔翼龍
    • Organizer
      第17回日本疲労学会総会・学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 抗疲労・健康と電解水素水2021

    • Author(s)
      樺山繁、中山昌明、崔翼龍、渡辺恭良
    • Organizer
      第17回日本疲労学会総会・学術集会
    • Related Report
      2021 Research-status Report

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Published: 2020-08-03   Modified: 2024-01-30  

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