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

Role of glial cells in the neural mechanism of blood pressure elevation during exercise stress

Research Project

Project/Area Number 20K19368
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 59010:Rehabilitation science-related
Research InstitutionNational Hospital Organization Murayama Medical Center

Principal Investigator

Yoshizawa Masashi  独立行政法人国立病院機構村山医療センター(臨床研究部), 電気生理学研究室, 共同研究員 (40836277)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords高血圧 / 低酸素 / 交感神経活動 / グリア細胞 / マイクログリア / ミノサイクリン / 低酸素換気応答 / 中枢性血圧調節 / 交感神経応答 / 運動負荷 / 血圧上昇 / 中枢性血圧調整
Outline of Research at the Start

リハビリテーションにおいて運動療法は重要です。しかし、リハビリテーションが必要な高齢者や脳血管障害の患者では不安定な血圧のため円滑なリハビリテーションを遂行できない場合があります。運動中に血圧が上昇する機構の中で中枢神経が関与するメカニズムについては未解明な点が多いです。近年、脳内の様々な神経調節メカニズムには神経細胞(ニューロン)のみならず、神経膠細胞(グリア細胞)という神経細胞をサポートする細胞の重要性がわかってきました。本研究では、特に運動時の血圧調節にグリア細胞がどのようにかかわるかを検討し、円滑なリハビリの遂行に寄与することはもとより、高血圧症の病態解明にも貢献していきます。

Outline of Final Research Achievements

The details of the neural mechanism by which blood pressure increases during exercise are unknown. Recently, it has become known that glial cells, in addition to neurons, are involved in the central blood pressure regulation mechanism, which is the increase in sympathetic nerve activity due to stress and the resulting increase in blood pressure. In this study, to elucidate the mechanism of blood pressure elevation during exercise, we analyzed how blood pressure and respiratory parameters are affected during hypoxia using minocycline, which suppresses microglial activity.
Administration of minocycline decreased blood pressure before hypoxic loading, but did not affect the response to hypoxia-induced blood pressure elevation.
But it was found to attenuate the response to hypoxia-induced ventilatory augmentation.

Academic Significance and Societal Importance of the Research Achievements

我々の結果からは、マイクログリアは中枢性血圧調節機構と中枢性呼吸調節機構とに対して異なる方向性で修飾を行っているものと考えられた。運動に伴う血圧上昇にマイクログリアが積極的に関わっているという示唆は得られなかったものの、中枢神経系の調節機構に確かにグリア細胞が関与しており、それぞれのパラメーターに対して促進的、抑制的のいずれにも複雑に関与していることが判明した。このことは、中枢性の血圧・呼吸の応答機序の解明のための道筋の一つとなったと考えられる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2023 2022 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (6 results)

  • [Journal Article] Minocycline prevents hypoxia-induced seizures2023

    • Author(s)
      Fukushi Isato、Ikeda Keiko、Takeda Kotaro、Yoshizawa Masashi、Kono Yosuke、Hasebe Yohei、Pokorski Mieczyslaw、Okada Yasumasa
    • Journal Title

      Frontiers in Neural Circuits

      Volume: 17 Pages: 1006424-1006424

    • DOI

      10.3389/fncir.2023.1006424

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of microglia in blood pressure and respiratory responses to acute hypoxic exposure in rats2022

    • Author(s)
      Yoshizawa Masashi、Fukushi Isato、Takeda Kotaro、Kono Yosuke、Hasebe Yohei、Koizumi Keiichi、Ikeda Keiko、Pokorski Mieczyslaw、Toda Takako、Okada Yasumasa
    • Journal Title

      The Journal of Physiological Sciences

      Volume: 72 Issue: 1 Pages: 1-13

    • DOI

      10.1186/s12576-022-00848-y

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Coherence analysis of the calcium activity of putative astrocytic and neuronal cells on the L5 ventral horn and neural output in activated lumbar CPG networks2022

    • Author(s)
      Yazawa Itaru、Okazaki Shuntaro、Yokota Shigefumi、Takeda Kotaro、Fukushi Isato、Yoshizawa Masashi、Onimaru Hiroshi、Okada Yasumasa
    • Journal Title

      Neuroscience Letters

      Volume: 771 Pages: 136421-136421

    • DOI

      10.1016/j.neulet.2021.136421

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Activation of Astrocytes in the Persistence of Post-hypoxic Respiratory Augmentation2021

    • Author(s)
      Fukushi Isato、Takeda Kotaro、Pokorski Mieczyslaw、Kono Yosuke、Yoshizawa Masashi、Hasebe Yohei、Nakao Akito、Mori Yasuo、Onimaru Hiroshi、Okada Yasumasa
    • Journal Title

      Frontiers in Physiology

      Volume: 12 Pages: 757731-757731

    • DOI

      10.3389/fphys.2021.757731

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Microglial Involvement in Stress-induced Prolonged Sympathetic Nervous Excitation in Rats2020

    • Author(s)
      Masashi Yoshizawa
    • Organizer
      第43回神経科学大会
    • Related Report
      2020 Research-status Report
  • [Presentation] ストレス刺激による循環応答におけるマイクログリアの関与2020

    • Author(s)
      吉沢 雅史 福士 勇人 河野 洋介 長谷部 洋平 小泉 敬一 武田 湖太郎 岡田 泰昌 戸田 孝子
    • Organizer
      第56回日本小児循環器学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Astrocytes mediate the post-hypoxic persistent respiratory augmentation.2020

    • Author(s)
      Fukushi I, Takeda K, Pokorski M, Kono Y, Yoshizawa M, Hasebe Y, Nakao A, Mori Y, Onimaru H, Okada Y.
    • Organizer
      Experimental Biology 2021 Meeting
    • Related Report
      2020 Research-status Report
  • [Presentation] Astrocytes play an active role in persistence of respiratory augmentation in the recovery phase after hypoxic exposure.2020

    • Author(s)
      Fukushi I, Kono Y, Takeda K, Yokota S, Onimaru H, Pokorski M, Okada Y.
    • Organizer
      Experimental Biology 2020 Meeting, April 2020, San Diego, U. S. A.
    • Related Report
      2020 Research-status Report
  • [Presentation] Role of Microglia in Ventilatory and Blood Pressure Responses to Acute Hypoxia.2020

    • Author(s)
      Okada Y, Yoshizawa M, Fukushi I, Takeda K, Kono Y, Hasebe Y, Koizumi K, Toda T.
    • Organizer
      Experimental Biology 2020 Meeting, April 2020, San Diego, U. S. A.
    • Related Report
      2020 Research-status Report
  • [Presentation] Microglial Involvement in Stress‐induced Prolonged Sympathetic Nervous Excitation in Rats.2020

    • Author(s)
      Yoshizawa M, Fukushi I, Takeda K, Kono Y, Hasebe Y, Koizumi K, Toda T, Okada Y.
    • Organizer
      Experimental Biology 2020 Meeting, April 2020, San Diego, U. S. A.
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi