• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Lactate-induced mitochondrial and metabolic adaptations

Research Project

Project/Area Number 21K21249
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0909:Sports sciences, physical education, health sciences, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Takahashi Kenya  東京大学, 大学院総合文化研究科, 助教 (40909917)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords乳酸 / ミトコンドリア / 骨格筋
Outline of Research at the Start

ミトコンドリアは、エネルギー産生を担う細胞内小器官で、運動パフォーマンスや健康の保持・増進に貢献する。申請者は、これまでの研究において、乳酸が骨格筋ミトコンドリアの量を向上させることを明らかにしてきた。近年では、骨格筋ミトコンドリアの量と機能の変化は必ずしも一致しないことやミトコンドリア量よりも機能の重要性が高いことが報告されている。そこで、本研究では、乳酸が骨格筋ミトコンドリアの機能に与える影響を明らかとすることを目的とする。さらに、乳酸による骨格筋ミトコンドリアの適応が、エネルギー代謝および運動パフォーマンスに与える影響を明らかにする。

Outline of Final Research Achievements

Lactate production increases during high-intensity exercise, which is recently recognized as a key factor for inducing physiological adaptation, such as mitochondrial biogenesis. Recently, it was reported that high-intensity exercise training increased not only mitochondrial content, but also mitochondrial respiratory function, raising the possibility that lactate may be relevant to adaptation of mitochondrial respiratory function induced by high-intensity exercise training. A hypothesis of this study was therefore that lactate administration would enhance mitochondrial function in skeletal muscle. This study showed that lactate administration altered mitochondrial protein content, enzyme activity, and mitochondrial respiratory function.

Academic Significance and Societal Importance of the Research Achievements

運動は、骨格筋ミトコンドリア量だけではなく機能も向上させることで、運動パフォーマンスの改善や健康の保持増進に貢献することが示されつつある。しかしながら、どのような因子が運動による骨格筋ミトコンドリアの機能向上に貢献しているのかについては不明な点が多い。本研究では、乳酸がミトコンドリアの機能を向上させる可能性が示された。したがって、乳酸のデータを活用することで、ミトコンドリア機能向上という観点から、より効果的な運動トレーニングを行うことが期待できる。

Report

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

    (10 results)

All 2023 2022 2021

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

  • [Journal Article] Effects of Endurance Training on Metabolic Enzyme Activity and Transporter Proteins in Skeletal Muscle of Ovariectomized Mice.2023

    • Author(s)
      Takahashi K, Kitaoka Y, Matsunaga Y, Hatta H.
    • Journal Title

      Med Sci Sports Exerc

      Volume: 55 Issue: 2 Pages: 186-198

    • DOI

      10.1249/mss.0000000000003045

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sex-specific differences in the metabolic enzyme activity and transporter levels in mouse skeletal muscle during postnatal development2023

    • Author(s)
      Takahashi K, Kitaoka Y, Hatta H.
    • Journal Title

      Appl Physiol Nutr Metab

      Volume: - Issue: 5 Pages: 361-378

    • DOI

      10.1139/apnm-2022-0462

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of Lactate Administration on Mitochondrial Respiratory Function in Mouse Skeletal Muscle2022

    • Author(s)
      Takahashi Kenya、Tamura Yuki、Kitaoka Yu、Matsunaga Yutaka、Hatta Hideo
    • Journal Title

      Frontiers in Physiology

      Volume: 13

    • DOI

      10.3389/fphys.2022.920034

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of endurance training on metabolic enzyme activity and transporter protein levels in the skeletal muscles of orchiectomized mice2022

    • Author(s)
      Takahashi K, Kitaoka Y, Hatta H.
    • Journal Title

      J Physiol Sci

      Volume: 72 Issue: 1 Pages: 14-14

    • DOI

      10.1186/s12576-022-00839-z

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lactate administration does not affect denervation-induced loss of mitochondrial content and muscle mass in mice2021

    • Author(s)
      Kenya Takahashi, Yu Kitaoka, Yutaka Matsunaga, Hideo Hatta
    • Journal Title

      FEBS Open Bio.

      Volume: 11 Issue: 10 Pages: 2836-2844

    • DOI

      10.1002/2211-5463.13293

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Effect of lactate administration on mitochondrial respiratory function in mouse skeletal muscle2022

    • Author(s)
      Takahashi Kenya、Tamura Yuki、Kitaoka Yu、Matsunaga Yutaka、Hatta Hideo
    • Organizer
      18th International Biochemistry of Exercise Conference
    • Related Report
      2022 Annual Research Report
  • [Presentation] マウスの成長に伴う骨格筋エネルギー代謝酵素の変化および性差2022

    • Author(s)
      高橋謙也、北岡祐、八田秀雄
    • Organizer
      第30回運動生理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 持久的トレーニングが卵巣摘出マウスにおける全身性代謝および骨格筋代謝酵素に与える影響.2022

    • Author(s)
      高橋謙也、北岡祐、松永裕、八田秀雄
    • Organizer
      第77回体力医学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Effects of endurance training on exercise performance and muscle metabolic enzyme activity in orchiectomized mice2022

    • Author(s)
      Takahashi Kenya、Kitaoka Yu、Hatta Hideo
    • Organizer
      The 100th Anniversary Annual Meeting of The Physiological Society of Japan
    • Related Report
      2022 Annual Research Report
  • [Presentation] 乳酸投与が骨格筋ミトコンドリアの呼吸機能に与える影響2021

    • Author(s)
      高橋謙也、田村優樹、北岡祐、松永裕、八田秀雄
    • Organizer
      第29回運動生理学会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-10-22   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi