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Development of the prevention system of hearing loss by exercise focusing on the PGC-1alpha/Nrf2 passway.

Research Project

Project/Area Number 18H02949
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 56050:Otorhinolaryngology-related
Research InstitutionTohoku University

Principal Investigator

KATORI Yukio  東北大学, 医学系研究科, 教授 (20261620)

Co-Investigator(Kenkyū-buntansha) 永富 良一  東北大学, 医工学研究科, 教授 (20208028)
本藏 陽平  東北大学, 医学系研究科, 非常勤講師 (20810146)
池田 怜吉  東北大学, 大学病院, 講師 (30645742)
川瀬 哲明  東北大学, 医工学研究科, 教授 (50169728)
鈴木 淳  東北大学, 大学病院, 講師 (80735895)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Fiscal Year 2021: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords加齢性難聴 / 酸化ストレス / Nrf2経路 / マウス / 運動 / 抗酸化作用 / PGC-1α/Nrf2経路 / Nrf2欠損マウス / 騒音性難聴 / 騒音負荷 / CDDP / 内耳 / 蝸牛 / PGC-1α / Nrf2 / 難聴 / 抗酸化能 / ミトコンドリア機能
Outline of Final Research Achievements

Oxidative stress is known to cause hearing loss. In this study, we raised keap-1 knockdown mice with enhanced antioxidant capacity (activated the Nrf2 pathway) for a year and examined their hearing and cochlea tissue. In mice with enhanced antioxidation, it was found that there was less cell degeneration of the inner ear after 12 months, and that changes in age-related hearing loss seen in normal cases could be prevented from the low to mid-frequency range.
On the other hand, we used mutated mice (Nrf2 deficiency) that are vulnerable to oxidative stress to investigate whether exercise works to prevent age-related hearing loss. At present, it is difficult to set the exercise load conditions, and no significant difference has been obtained.

Academic Significance and Societal Importance of the Research Achievements

超高齢社会となった本邦では、75歳以上で男女ともに6割以上が難聴になると報告されており(内田ら、日老医誌 2012)、コミュニケーション能力や精神機能の低下を防ぐために、難聴の予防や治療が重要な課題になっている。本研究では、抗酸化能を増強したkeap1ノックダウンマウスを用いた実験で、正常マウスに比べて12ヶ月後の聴力低下ならびに内耳組織の変性が少ないことを明らかにした。この成果は、加齢性難聴を予防するうえで、抗酸化能の強化を励行する基礎的な根拠になると考えられる。一方、目的の一つであった、難聴予防における運動の効果は検証できておらず、今後の継続的な研究課題と考えている。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (11 results)

All 2021 2020 2019 2018

All Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (5 results)

  • [Journal Article] Activation of the NRF2 pathway in Keap1-knockdown mice attenuates progression of age-related hearing loss2020

    • Author(s)
      Oishi Tetsuya、Matsumaru Daisuke、Ota Nao、Kitamura Hiroshi、Zhang Tianxiang、Honkura Yohei、Katori Yukio、Motohashi Hozumi
    • Journal Title

      npj Aging and Mechanisms of Disease

      Volume: 6 Issue: 1 Pages: 14-14

    • DOI

      10.1038/s41514-020-00053-4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development and growth of auricular cartilage and muscles: A study using human fetuses.2020

    • Author(s)
      Yohei Honkura, Shogo Hayashi, Ji Hyun Kim, Gen Murakami, Hiroshi Abe, Jose Francisco Rodriguez-Vazquez, Yukio Katori
    • Journal Title

      International journal of pediatric otorhinolaryngology

      Volume: 133 Pages: 109973-109973

    • DOI

      10.1016/j.ijporl.2020.109973

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The incudopetrosal joint of the human middle ear: a transient morphology in fetuses.2020

    • Author(s)
      Rodriguez-Vazquez JF, Yamamoto M, Kim JH, Jin ZW, Katori Y, Murakami G.
    • Journal Title

      J Anat.

      Volume: in press Issue: 1 Pages: 1-12

    • DOI

      10.1111/joa.13181

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of enriched endogenous omega-3 fatty acids on age-related hearing loss in mice2019

    • Author(s)
      Honkura Yohei、Suzuki Jun、Sakayori Nobuyuki、Inada Hitoshi、Kawase Tetsuaki、Katori Yukio、Osumi Noriko
    • Journal Title

      BMC Research Notes

      Volume: 12 Issue: 1 Pages: 768-768

    • DOI

      10.1186/s13104-019-4809-8

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] “Passenger gene” problem in transgenic C57BL/6 mice used in hearing research2019

    • Author(s)
      Suzuki Jun、Inada Hitoshi、Han Chul、Kim Mi-Jung、Kimura Ryuichi、Takata Yusuke、Honkura Yohei、Owada Yuji、Kawase Tetsuaki、Katori Yukio、Someya Shinichi、Osumi Noriko
    • Journal Title

      Neuroscience Research

      Volume: - Pages: 30469-9

    • DOI

      10.1016/j.neures.2019.10.007

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 老化と聴力障害 酸化ストレスによる内耳障害予防に対する転写因子NRF2の役割2018

    • Author(s)
      本蔵陽平
    • Journal Title

      医学のあゆみ

      Volume: 266 Pages: 588-591

    • Related Report
      2018 Annual Research Report
  • [Presentation] 蝸牛シナプス障害モデル動物を用いた研究に必要な実験手技2021

    • Author(s)
      鈴木淳
    • Organizer
      日本耳科学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 騒音性難聴の発症とその予防に対する,転写因子NRF2の機能の解明2019

    • Author(s)
      本藏 陽平
    • Organizer
      第29回日本耳科学会ネクストジェネレーションセッション
    • Related Report
      2019 Annual Research Report
  • [Presentation] “ Hidden hearing loss” の治療法開発にむけて2019

    • Author(s)
      鈴木 淳
    • Organizer
      第29回日本耳科学会ネクストジェネレーションセッション
    • Related Report
      2019 Annual Research Report
  • [Presentation] 転写因子NRF2活性化による加齢性難聴予防効果の検討2018

    • Author(s)
      本蔵陽平、大石哲也、川瀬哲明、香取幸夫
    • Organizer
      日本耳科学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 抗酸化作用およびミトコンドリア機能に着目した難聴予防法の検討2018

    • Author(s)
      本蔵陽平
    • Organizer
      日本抗加齢医学会
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2023-01-30  

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