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Mechanisms of blood glucose re-distribution to enhance blood glucose supply to active muscle - focusing on glucose uptake in inactive muscle

Research Project

Project/Area Number 20K11326
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59020:Sports sciences-related
Research InstitutionThe University of Tokushima

Principal Investigator

RA Song-Gyu  徳島大学, 教養教育院, 准教授 (60741999)

Co-Investigator(Kenkyū-buntansha) 檜垣 靖樹  福岡大学, スポーツ科学部, 教授 (10228702)
川中 健太郎  福岡大学, スポーツ科学部, 教授 (80339960)
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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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)
Keywords血糖 / 糖取り込み / 非活動筋 / TXNIP / AMPK / ストレスホルモン
Outline of Research at the Start

実験動物を対象とした運動負荷実験を用いて、運動中に活動筋において糖取り込みが増加するとき、対照的に非活動筋において糖の取り込みが低下する可能性について検証する。また、その非活動筋の糖取り込みの低下にチオレドキシン相互作用タンパク質(TXNIP)の発現が関与している可能性を検証する。さらには、分子生物学的手法を用いて運動時に非活動筋においてTXNIPが増加する分子機序を明らかにする。

Outline of Final Research Achievements

We have previously shown that thioredoxin-interacting protein (TXNIP), which inhibits skeletal muscle glucose uptake, is decreased in exercised muscle during exercise. However, changes in TXNIP in non-exercised muscle have not been clarified.
In the present study, we examined changes in skeletal muscle glucose uptake and TXNIP in both exercised and non-exercised muscle during exercise. The results of this study revealed that the expression of TXNIP increased during exercise in non-exercised muscle, in contrast to exercised muscle. The results also indicated that the activity level of AMPK in the muscle may be involved in this change in TXNIP. However, glucose uptake in non-exercised muscle did not decrease with increasing TXINP.

Academic Significance and Societal Importance of the Research Achievements

本研究の結果から、運動時に糖の取り込みが高まる活動筋とは対照的に、非活動筋においては糖取り込みを負に制御するTXNIPの発現量が高まることが示された。すなわち、運動中には非活動筋においてTXNIP発現量が高まり糖取り込みが低下することで、残った血糖を活動筋へ分配する血糖維持機構が存在する可能性がある。非活動筋に着目した研究を進めることで、持久性アスリートの運動パフォーマンス向上に資する成果が期待される。

Report

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

    (10 results)

All 2023 2022 2021 2020

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results)

  • [Journal Article] Effect of Taurine on the Regulation of Glucose Uptake in the Skeletal Muscle2022

    • Author(s)
      Ra Song-Gyu
    • Journal Title

      Advances in Experimental Medicine and Biology

      Volume: 1370 Pages: 305-309

    • DOI

      10.1007/978-3-030-93337-1_29

    • ISBN
      9783030933364, 9783030933371
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Acute bout of exercise downregulates thioredoxin-interacting protein expression in rat contracting skeletal muscles2020

    • Author(s)
      Song-Gyu Ra, Emi Kawamoto, Keiichi Koshinaka, Maiko Iwabe, Yuki Tomiga, Hiroki Iizawa, Hiroki Honda, Yasuki Higaki, Kentaro Kawanaka.
    • Journal Title

      Physiological Reports

      Volume: 8(11) Issue: 11

    • DOI

      10.14814/phy2.14388

    • NAID

      120007126556

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] タウリン摂取がマウス骨格筋の糖・脂質代謝関連因子へ及ぼす影響2023

    • Author(s)
      羅 成圭、志内 哲也
    • Organizer
      第9回国際タウリン研究会日本部会
    • Related Report
      2022 Annual Research Report
  • [Presentation] スポーツ栄養学分野における研究成果を実践現場で活用するために2022

    • Author(s)
      羅 成圭
    • Organizer
      第77回日本体力医学会大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Muscle contraction regulates skeletal muscle TXNIP expression related to local glucose uptake2021

    • Author(s)
      Song-Gyu Ra
    • Organizer
      2021 Korean Society of Exercise Physiology annual conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 運動後の非活動筋における糖取り込みとTXNIPの関与2021

    • Author(s)
      羅成圭、本田紘基、川中健太郎.
    • Organizer
      第76回日本体力医学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] assive stretch improves insulin-stimulated glucose transport together with downregulation of TXNIP in rat soleus muscle2020

    • Author(s)
      Hiroki Honda, Song-Gyu Ra, Hiroki Iizawa, Shihoko Nakashima, Yuki Tomiga, Yasuki Higaki, Kentaro Kawanaka.
    • Organizer
      American College of Sports Medicine’s Annual Meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Passive stretch improves insulin-stimulated glucose transport together with downregulation of TXNIP in rat immobilized soleus muscle2020

    • Author(s)
      Hiroki Honda, Song-Gyu Ra, Hiroki Iizawa, Shihoko Nakashima, Yuki Tomiga, Yasuki Higaki, Kohei Kido, Kentaro Kawanaka.
    • Organizer
      Integrative Physiology of Exercise 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 受動的なストレッチはラットヒラメ筋のTXNIP発現量を減少させるとともにインスリン抵抗性を改善する2020

    • Author(s)
      本田紘基、羅成圭、飯澤拓樹、中島志穂子、冨賀裕貴、檜垣靖樹、木戸康平、川中健太郎.
    • Organizer
      第75回日本体力医学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 短期間の走運動は海馬BDNFのDNAメチル化レベルを低下させる2020

    • Author(s)
      冨賀裕貴、坂井一哉、伊藤愛、羅成圭、上原吉就、川中健太郎、檜垣靖樹.
    • Organizer
      第75回日本体力医学会大会
    • Related Report
      2020 Research-status Report

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

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