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Involvement of glycation stress, sleep and melatonin in amyloid beta aggregation

Research Project

Project/Area Number 20K11593
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionDoshisha University

Principal Investigator

Yonei Yoshikazu  同志社大学, 生命医科学部, 教授 (40191655)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsアルツハイマー型認知症 / アミロイドβ(Aβ)貪食 / ミクログリア / 糖化ストレス / 睡眠の質 / メチルグリオキサール / アクロレイン / メラトニン / 糖化アミロイドβ(Aβ) / Aβ貪食 / グリアプロテクション / 認知症 / amyloid-β(Aβ) / Aβクリアランス / Aβ40/42比 / アミロイドβ / アミロイドβ 40/42比 / マクロファージ / 睡眠 / 2型糖尿病
Outline of Research at the Start

糖化ストレスは認知症の発症リスクとして報告されている。今回は「Aβ凝集が糖化ストレスにより生じる」と仮定した。In vitro実験で糖化Aβを作成しその構造変化を解析、凝集Aβとの比較を行う。糖化Aβは難分解性であることが予測されるが、第一にAβ分解酵素、AGEs分解酵素やメラトニンを用いて、第二に培養ミクログリアを用いて、凝集Aβを効率的に分解する条件を模索することを研究目的とした。睡眠の質を高め、内因性メラトニン分泌を促すことで、糖化ストレスを減らし認知症予防に貢献できる可能性が期待できる。

Outline of Final Research Achievements

We measured the plasma amyloid-β(Aβ) 40/42 ratio in 69 subjects undergoing health checkups and, in experiments, evaluated the Aβ phagocytosis using the primary cultured microglia to analyze the relationship between Alzheimer's disease (AD) risk factors(glycative stress and "poor sleep quality") and Aβ clearance. Multiple regression analysis identified atherosclerosis and glycative stress (skin autofluorescence measured by AGE Reader) as factors that increase the objective variable Aβ40/42 ratio, and Aβ40/42 ratio was significantly higher in those with "poor sleep quality" than in the others. Experimentally, Aβ phagocytosis was enhanced by melatonin (an indicator hormone for sleep quality) and markedly decreased in response to glycated Aβ(methylglyoxal- or acrolein-conjugated types). In conclusions,it is assumed that the maintenance of Aβ clearance homeostasis by countermeasures against glycative stress and "high sleep quality" is important to prevent the progression of AD.

Academic Significance and Societal Importance of the Research Achievements

神経回路の広範な破壊を伴うADについては、治療による機能回復が困難であるため、発症後の治療よりも発症・進展予防に重点を置いた方が、患者にとって社会的意義はより大きいと思われる。今回の研究結果より、「睡眠の質」低下と糖化ストレスがAβクリアランスを低下させる因子であることが示唆された。「睡眠の質」向上に伴い分泌が増加するメラトニンは終末糖化産物(AGEs)分解促進作用などの抗糖化ストレス作用を有する。ADの予防戦略については、「睡眠の質」改善と糖化ストレス対策を主軸に置いた、早期からの生活習慣改善によりAβの糖化予防とAβクリアランスの恒常性を維持する方向にパラダイムシフトすべきと考える。

Report

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

    (9 results)

All 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (3 results)

  • [Journal Article] Amyloid beta clearance and microglia: Effects of glycative stress and melatonin2022

    • Author(s)
      Yonei Y, Taira T, Otaka S, Sekiguchi S, manum-or-Rashis ANM, Yagi M, Masuzaki H
    • Journal Title

      Glycative Stress Research

      Volume: 9 Issue: 3 Pages: 135-145

    • DOI

      10.24659/gsr.9.3_135

    • ISSN
      2188-3602, 2188-3610
    • Year and Date
      2022-09-30
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Glycative Stress and the progression of Alzheimer-type Dementia: From the Perspective of Amyloid-beta Clearance2022

    • Author(s)
      Yonei Y, Yagi M, Mamun-or-Rashid ANM, Sato K.
    • Journal Title

      Medical Research Archives

      Volume: 10 Issue: 12 Pages: 3374-3374

    • DOI

      10.18103/mra.v10i12.3374

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Plasma amyloid ϐ 40/42 ratio and its characteristics2021

    • Author(s)
      Meno M, Yokota S, Hashimoto M, Yagi M, Yonei Y.
    • Journal Title

      Glycative Stress Research

      Volume: 8 Issue: 2 Pages: 62-72

    • DOI

      10.24659/gsr.8.2_62

    • NAID

      130008076795

    • ISSN
      2188-3602, 2188-3610
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of mats with “A Distinctive 4-Layer 3-Dimensional Structure” on sleep quality and gut microbiota: A non-controlled open-label study2021

    • Author(s)
      Haasbroek K, Yagi M, Ando M, Nonomura T, Shimura Y, Yonei Y.
    • Journal Title

      Glycative Stress Research

      Volume: 8 Issue: 2 Pages: 73-86

    • DOI

      10.24659/gsr.8.2_73

    • NAID

      130008076793

    • ISSN
      2188-3602, 2188-3610
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anti-aging Medical Check-up and Evidence of Its Benefits2021

    • Author(s)
      Yonei Y, Yagi M, Meno M.
    • Journal Title

      Ningen Dock International

      Volume: 8 Issue: 1 Pages: 3-8

    • DOI

      10.11320/ningendockitn.8.1_3

    • NAID

      130008023035

    • ISSN
      2187-8072, 2187-8080
    • Related Report
      2020 Research-status Report
  • [Journal Article] Effect of the newly developed articulatory panels (Aural Sonic): A pilot clinical trial.2020

    • Author(s)
      Fukushima M, UenakaS , Yagi M, Takabe W, Yonei Y.
    • Journal Title

      Glycative Stress Research

      Volume: 7 Issue: 2 Pages: 123-131

    • DOI

      10.24659/gsr.7.2_123

    • NAID

      130007886634

    • ISSN
      2188-3602, 2188-3610
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 糖化ストレスからみた認知症対策2022

    • Author(s)
      米井嘉一
    • Organizer
      第25回糖化ストレス研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ミクログリアamyloid β貪食能と糖化ストレス2022

    • Author(s)
      米井 嘉一、八木 雅之、ANM Mamun-or-Rashid
    • Organizer
      第32回日本メイラード学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] アンチエイジング健診データからみた血漿Aβ40/42 比の意義.2021

    • Author(s)
      米井嘉一、川端万葉、横田早貴、橋本美帆、八木雅之.
    • Organizer
      第21回日本抗加齢医学会総会
    • Related Report
      2021 Research-status Report

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

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