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Ingestion of nitric oxide donor could alleviate the decline of sarcoplasmic reticulum functions following eccentric contraction.

Research Project

Project/Area Number 18K10817
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 InstitutionUniversity of Miyazaki

Principal Investigator

Matsunaga Satoshi  宮崎大学, 教育学部, 教授 (70221588)

Co-Investigator(Kenkyū-buntansha) 和田 正信  広島大学, 総合科学研究科, 教授 (80220961)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords一酸化窒素供与体 / 筋収縮力 / 筋小胞体 / 伸張性収縮 / 一酸化窒素供給体 / 筋小胞体機能 / 筋疲労 / 一酸化窒素 / 細胞内Ca2+調節機能 / 筋機能低下の抑止
Outline of Final Research Achievements

We examined whether ingestion of nitric oxide donor would alleviate the decline of muscle contractile properties and sarcoplasmic reticulum (SR) functions in rat fast-twitch muscle following eccentric contraction (ECC). Dietary nitric oxide donor of 5-days could attenuate ECC-induced decline of the maximal tetanic force and SR Ca2+ATPase activity. The results using immunoblotting showed that ingestion of nitric oxide donor could also alleviate ECC-induced decline in protein content of ryanodine receptor, which is one of SR Ca2+-regulatory proteins.

Academic Significance and Societal Importance of the Research Achievements

我々は、一酸化窒素の基質の1つである硝酸塩摂取により伸張性収縮による筋発揮張力の減退緩和の可能性を示してきた。近年、一酸化窒素供給体は、硝酸塩より一酸化窒素を効率よく産生できる物質であることが示された。本研究では、5日間の一酸化窒素供給体の摂取により、伸張性収縮に伴う筋収縮力を顕著に緩和させること、並びにこれは筋小胞体による細胞内Ca2+調節機能の減退緩和に起因することを示した。また、これは活動性の筋疲労予防に、一酸化窒素の経口投与が効果的である可能性を示すものであった。しかしながら、この機能減退緩和に最適な一酸化窒素供給体の濃度や摂取期間等については、未だ不明な部分が多く残されている。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (3 results)

All 2020 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (1 results)

  • [Journal Article] 硝酸塩経口摂取が女子大学生エリートカヌー選手の無酸素性運動能力に及ぼす影響2020

    • Author(s)
      谷口夢結, 福田佳尉, 福田侑季実, 山﨑裕太, 松永須美子, 松永 智
    • Journal Title

      宮崎大学教育学部紀要

      Volume: 95 Pages: 230-239

    • NAID

      120007120337

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Effect of dietary nitrate on force production and sarcoplasmic reticulum Ca2+ handling in rat fast-twitch muscles following eccentric contraction.2018

    • Author(s)
      S. Matsunaga, C. Aibara, D. Watanabe, K. Kanzaki, Y. Morizaki, S. Matsunaga-Futatsuki, M. Wada
    • Journal Title

      Open J. Appl. Sci.

      Volume: 8 Issue: 12 Pages: 607-618

    • DOI

      10.4236/ojapps.2018.812049

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 一酸化窒素供給体の摂取が伸張性収縮による筋小胞体機能の減退を抑制する2019

    • Author(s)
      松永 智、森﨑由理江、塩瀬圭佑、松永須美子、和田正信
    • Organizer
      日本体力医学会第1回南九州地方大会
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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