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Brain Environmental Variability and Pathological Control by Psychosomatic Functional Linkage

Research Project

Project/Area Number 22K15218
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 46030:Function of nervous system-related
Research InstitutionTohoku University

Principal Investigator

YOKO Ikoma  東北大学, 生命科学研究科, 助教 (20838510)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywordsグリア細胞 / 迷走神経刺激 / てんかん / 脳内環境 / 心身機能連関 / ファイバーフォトメトリー / 末梢中枢機能連関
Outline of Research at the Start

体調や気分次第で思考そのものが変わるのは、末梢/グリアからの影響によるものと考えられる。本研究では、末梢神経である迷走神経を求心性に刺激し、中枢脳へ刺激を送り込む方法を活用して、てんかん病態治療の新戦略を開拓する。迷走神経刺激(VNS)から中枢脳機能変化へと至る道筋はグリア細胞が担う。外部からの刺激に鋭敏に反応し、また脳内環境を強力に支配しているのは、グリア細胞だからである。本研究では、VNSと中枢神経刺激を組み合わせ、グリア細胞活動を的確に誘導し、病態制御の最適化を目指す。本研究の目的は、心身機能連関のメカニズムを明らかにすることで、心の成り立ちを全身性に理解することである。

Outline of Final Research Achievements

The activity of neurons in the brain is subject to various regulations from peripheral nerves and glial cells around the neurons. The vagus nerve is a peripheral nerve and stimulating these nerve fibers could send signals to the central brain and such vagus nerve stimulation (VNS) has been used to cure epilepsy in human patients. However, the mechanisms of the VNS therapy is still unknown. It is possible that VNS affects the glial cells in the brain, which are sensitive to external stimuli. In this study, I used mice to clarify how the response of glial cells changes during the development of epileptiform symptoms, and also examined the response of glial cells when antiepileptic effects are induced by the VNS. It was suggested that glial cell-mediated changes in the brain environment may produce antiepileptic effects.

Academic Significance and Societal Importance of the Research Achievements

てんかんの有病率は全人口の1%にも及ぶが、てんかん焦点の外科的切除以外の根本的な治癒の方法は未だに見つかっていない。その中、首のあたりにある迷走神経を脳に向かって刺激する方法(迷走神経刺激法;VNS)で、難治性のてんかんが治癒されることがあることが発見されて、大いに注目を浴びているが、治癒のメカニズムは明らかではない。そこで、本研究では、実験動物のマウスを用いて、てんかん様症状が発展したり、VNSによって抗てんかん作用を誘導した時の脳の活動を調べることにした。研究の結果、VNSから中枢脳機能変化へと至る経路には、外部からの刺激に鋭敏に反応するグリア細胞が担う可能性が示唆された。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (17 results)

All 2024 2023 2022 Other

All Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 8 results) Presentation (5 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results) Remarks (3 results)

  • [Journal Article] Astrocyte switch to the hyperactive mode2024

    • Author(s)
      Shun Araki, Ichinosuke Onishi, Yoko Ikoma, Ko Matsui
    • Journal Title

      GLIA

      Volume: N/A Issue: 8 Pages: 1418-1434

    • DOI

      10.1002/glia.24537

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anxiety control by astrocytes in the lateral habenula2024

    • Author(s)
      Tan Wanqin、Ikoma Yoko、Takahashi Yusuke、Konno Ayumu、Hirai Hirokazu、Hirase Hajime、Matsui Ko
    • Journal Title

      Neuroscience Research

      Volume: - Pages: 1-15

    • DOI

      10.1016/j.neures.2024.01.006

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Glial tone of aggression2024

    • Author(s)
      Asano Y, Sasaki D, Ikoma Y, Matsui K
    • Journal Title

      Neuroscience Research

      Volume: N/A Pages: 39-51

    • DOI

      10.1016/j.neures.2023.11.008

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Properties of REM sleep alterations with epilepsy2023

    • Author(s)
      Ikoma Yoko、Takahashi Yusuke、Sasaki Daichi、Matsui Ko
    • Journal Title

      Brain

      Volume: N/A Issue: 6 Pages: 2431-2442

    • DOI

      10.1093/brain/awac499

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Local brain environment changes associated with epileptogenesis2022

    • Author(s)
      Ikoma Yoko、Sasaki Daichi、Matsui Ko
    • Journal Title

      Brain

      Volume: 146 Issue: 2 Pages: 576-586

    • DOI

      10.1093/brain/awac355

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Control of the central brain environment by vagus nerve stimulation2022

    • Author(s)
      生駒 葉子、松井 広
    • Journal Title

      The Autonomic Nervous System

      Volume: 59 Issue: 4 Pages: 366-370

    • DOI

      10.32272/ans.59.4_366

    • ISSN
      0288-9250, 2434-7035
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multifaceted roles of orexin neurons in mediating methamphetamine-induced changes in body temperature and heart rate2022

    • Author(s)
      Miyata Kohei、Ikoma Yoko、Murata Koshi、Kusumoto-Yoshida Ikue、Kobayashi Kenta、Kuwaki Tomoyuki、Ootsuka Youichirou
    • Journal Title

      IBRO Neuroscience Reports

      Volume: 12 Pages: 108-120

    • DOI

      10.1016/j.ibneur.2022.01.002

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Optogenetic stimulus-triggered acquisition of seizure resistance2022

    • Author(s)
      Shimoda Yoshiteru、Beppu Kaoru、Ikoma Yoko、Morizawa Yosuke M.、Zuguchi Satoshi、Hino Utaro、Yano Ryutaro、Sugiura Yuki、Moritoh Satoru、Fukazawa Yugo、Suematsu Makoto、Mushiake Hajime、Nakasato Nobukazu、Iwasaki Masaki、Tanaka Kenji F.、Tominaga Teiji、Matsui Ko
    • Journal Title

      Neurobiology of Disease

      Volume: 163 Pages: 105602-105602

    • DOI

      10.1016/j.nbd.2021.105602

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Involvement of A5/A7 noradrenergic neurons and B2 serotonergic neurons in nociceptive processing: a fiber photometry study.2022

    • Author(s)
      Moriya S, Yamashita A, Masukawa D, Sakaguchi J, Ikoma Y, Sameshima Y, Kambe Y, Yamanaka A, *Kuwaki T.
    • Journal Title

      Neural Regen Res

      Volume: 17(4) Issue: 4 Pages: 881-886

    • DOI

      10.4103/1673-5374.322465

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Optical measurements of brain environment shifts dependent on brain states2024

    • Author(s)
      Yoko Ikoma
    • Organizer
      第101回日本生理学会大会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 神経回路動作と行動変容につながる脳内環境シフトの光計測2023

    • Author(s)
      生駒 葉子
    • Organizer
      第33回神経行動薬理若手研究者の集い
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] こころとからだをつなぐ 末梢神経とグリア細胞2023

    • Author(s)
      生駒 葉子
    • Organizer
      WPJ-WEBシンポジウム
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Brain environmental changes associated with epilepsy development and sudden death.2023

    • Author(s)
      Ikoma Y, Sasaki D, Matsui K
    • Organizer
      Annual Meeting of The Physiological Society of Japan
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Brain environmental changes precede neuronal activity shifts to REM sleep.2023

    • Author(s)
      Takahashi Y, Sasaki D, Ikoma Y, Matsui K
    • Organizer
      Annual Meeting of The Physiological Society of Japan
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Remarks] 東北大学 超回路脳機能分野 メンバーページ

    • URL

      http://www.ims.med.tohoku.ac.jp/matsui/member-YokoIkoma.html

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
  • [Remarks] researchmap

    • URL

      https://researchmap.jp/neko22

    • Related Report
      2023 Annual Research Report
  • [Remarks] researchmap 生駒葉子

    • URL

      https://researchmap.jp/neko22

    • Related Report
      2022 Research-status Report

URL: 

Published: 2022-04-19   Modified: 2025-01-30  

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