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Evaluation of risk factor under oxidative stress in aging by EPR imaging

Research Project

Project/Area Number 19K07920
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52010:General internal medicine-related
Research InstitutionHealth Sciences University of Hokkaido

Principal Investigator

EMOTO Miho  北海道医療大学, 医療技術学部, 講師 (10578735)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords酸化ストレス / aging / EPRイメージング / ナイトロオキサイド化合物 / 老化
Outline of Research at the Start

本研究では、酸化ストレスという観点から老齢マウスと若齢マウスとの間にどのような共通点や差異があるのか?という問いを立て、レドックス状態の相対的指標を非侵襲的に画像化できるEPRイメージング法と、in vitroによる複数の脳内酸化ストレスマーカーの情報を統合し、老化により脳内ではどのような変化が起きたのかを明らかにする画像指標(Risk factor map)を作成する事を目的とする。Risk factor mapにより酸化ストレスによる様々な疾患の危険性を画像から判断でき、将来的には予防医学への寄与が期待できるものである。

Outline of Final Research Achievements

Our previous studies reveal that amyloid-beta level correlates to the oxidative stress level of Alzheimer’s disease model mice. This study focuses on the same and different points of oxidative stress for control and aged mice brain using the EPR imaging method. The EPR imaging and the concentration of oxidative stress substances, such as ascorbic acid, glutathione, and SOD, were combined and remapped. The remapping image shows the risk factor for oxidative stress levels for aged mice compared to control mice.

Academic Significance and Societal Importance of the Research Achievements

超高齢社会となっている我が国では、更なる高齢化に向けて長期的な対応策を打ち出すことが喫緊の課題となっている。
老化による健康に対する影響はで言えば、最も深刻なものの一つがアルツハイマー病に代表される認知症問題である。平成29年高齢社会白書(内閣府)によると、2025年には65歳以上の高齢者の約5分の1は認知症有病者になる推計があるとされている。また、認知症に関わる医療費は、年間1.9兆円、介護費が6.4兆円などと認知症には莫大な費用が必要という試算がある。この事から、老化に関する科学的根拠に基づく知見が増え認知症の予防が可能となれば、日本経済にも非常に大きな波及効果をもたらすことが可能となる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2021 2020 2019 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results) Remarks (2 results)

  • [Journal Article] Early detection of redox imbalance in the APPswe/PS1dE9 mouse model of Alzheimer’s disease by in vivo electron paramagnetic resonance imaging2021

    • Author(s)
      Emoto Miho C.、Sato-Akaba Hideo、Hamaue Naoya、Kawanishi Katsuya、Koshino Hisashi、Shimohama Shun、Fujii Hirotada G.
    • Journal Title

      Free Radical Biology and Medicine

      Volume: 172 Pages: 9-18

    • DOI

      10.1016/j.freeradbiomed.2021.05.035

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Three-dimensional electron paramagnetic resonance imaging of mice using ascorbic acid sensitive nitroxide imaging probes2021

    • Author(s)
      Sato-Akaba Hideo、Emoto Miho C.、Yamada Ken-ichi、Koshino Hisashi、Fujii Hirotada G.
    • Journal Title

      Free Radical Research

      Volume: 55 Issue: 9-10 Pages: 950-957

    • DOI

      10.1080/10715762.2021.1991918

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Design and Fabrication of Compact Arrayed Magnet for Biological EPR Imaging2020

    • Author(s)
      Sato-Akaba Hideo、Okada Yuki、Tsuji Kentaro、Emoto Miho C.、Fujii Hirotada G.
    • Journal Title

      Applied Magnetic Resonance

      Volume: - Issue: 8 Pages: 1-13

    • DOI

      10.1007/s00723-020-01256-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Early administration of galantamine from preplaque phase suppresses oxidative stress and improves cognitive behavior in APPswe/PS1dE9 mouse model of Alzheimer's disease2019

    • Author(s)
      Saito Taro、Hisahara Shin、Iwahara Naotoshi、Emoto Miho C.、Yokokawa Kazuki、Suzuki Hiromi、Manabe Tatsuo、Matsumura Akihiro、Suzuki Syuuichirou、Matsushita Takashi、Kawamata Jun、Sato-Akaba Hideo、Fujii Hirotada G.、Shimohama Shun
    • Journal Title

      Free Radical Biology and Medicine

      Volume: 145 Pages: 20-32

    • DOI

      10.1016/j.freeradbiomed.2019.09.014

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Transplantation of Mesenchymal Stem Cells Improves Amyloid-β Pathology by Modifying Microglial Function and Suppressing Oxidative Stress2019

    • Author(s)
      Yokokawa Kazuki、Iwahara Naotoshi、Hisahara Shin、Emoto Miho C.、Saito Taro、Suzuki Hiromi、Manabe Tatsuo、Matsumura Akihiro、Matsushita Takashi、Suzuki Syuuichirou、Kawamata Jun、Sato-Akaba Hideo、Fujii Hirotada G.、Shimohama Shun
    • Journal Title

      Journal of Alzheimer's Disease

      Volume: 72 Issue: 3 Pages: 867-884

    • DOI

      10.3233/jad-190817

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Glutathione and Ascorbic Acid on the Brain Redox Status in Transgenic Mouse Model of Alzheimer’s Disease Evaluated by EPR Imaging2019

    • Author(s)
      Miho C Emoto, Naoya Hamaue, Hideo Sato-Akaba, Hirotada G Fujii
    • Journal Title

      Free Radical Biology and Medicine

      Volume: 145 Pages: S100-S101

    • DOI

      10.1016/j.freeradbiomed.2019.10.268

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Development of digital EPR imaging system for biological applications.2021

    • Author(s)
      Hideo Sato-Akaba, Miho C. Emoto, Hirotada G. Fujii
    • Organizer
      ISMAR-APNMR-NMRSJ-SEST2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Brain imaging of small animals by compact bench-top EPR imager.2021

    • Author(s)
      Hirotada G Fujii, Hideo Sato-Akaba, Miho C Emoto
    • Organizer
      ISMAR-APNMR-NMRSJ-SEST2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Brain redox status of Alzheimer's disease model mouse using piperidine nitroxide Tempone with EPR imaging system2021

    • Author(s)
      Emoto Miho, Sato-Akaba H, Fujii H
    • Organizer
      第49回日本磁気共鳴医学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] アルツハイマー病モデルマウスを用いた脳内酸化ストレスのイメージング研究2019

    • Author(s)
      江本美穂
    • Organizer
      第72回日本酸化ストレス学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Effect of Glutathione and Ascorbic Acid on the Brain Redox Status in Transgenic Mouse Model of Alzheimer’s Disease Evaluated by EPR Imaging2019

    • Author(s)
      Miho C Emoto, Naoya Hamaue, Hideo Sato-Akaba, Hirotada G Fujii
    • Organizer
      The Society for Redox Biology and Medicine's 26th Annual Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Brain redox imaging using blood-brain barrier-permeable nitroxide probes with different lipophilicity2019

    • Author(s)
      Emoto Miho, Sato S, Sato-Akaba H, Fujii H
    • Organizer
      第47回日本磁気共鳴医学会大会
    • Related Report
      2019 Research-status Report
  • [Remarks] 江本研究室

    • URL

      http://www.hoku-iryo-u.ac.jp/~emoto/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 江本研究室 北海道医療大学

    • URL

      http://www.hoku-iryo-u.ac.jp/~emoto/index.html

    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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