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Investigation of the stress-induced synaptic changes and its molecular mechanism in the anterior cingulate cortex

Research Project

Project/Area Number 16K08528
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Environmental physiology(including physical medicine and nutritional physiology)
Research InstitutionSaitama Medical University

Principal Investigator

Yasushi Hojo  埼玉医科大学, 医学部, 助教 (20536875)

Project Period (FY) 2016-10-21 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords帯状回 / ストレス / グルココルチコイド受容体 / オシレーション / ドーパミン受容体 / シナプス / グルココルチコイド
Outline of Final Research Achievements

The anterior cingulate cortex (ACC), which is responsible for higher order process including attention, empathy and decision making, is vulnerable to stress. In the ACC, however, the site of action of glucocorticoid, released from adrenal upon stress, remains unclear. We identified the cell type which expresses glucocorticoid receptor in mouse ACC, i.e., glutametargic and GABAergic (parvalbumin- and somatostatin-positive) neurons. Neural circuits of these neurons mainly play a role in generating network oscillation which is associated with the higher order process in ACC above. We also investigated the effect of glucocorticoid on the network oscillation by using the mouse ACC slice. In glucocorticoid-treated group, the magnitude of dopamine-induced modulatory effect on oscillation power was suppressed, suggesting that glucocorticoid alters ACC function via dopaminergic system in ACC.

Academic Significance and Societal Importance of the Research Achievements

ストレスに対して影響を受けやすいと言われていた前部帯状回において、ストレス時に分泌されるホルモンがどの種類の細胞に作用するかを明らかにした点、また、注意・共感・意思決定といった高次脳機能を発揮する際に観測される神経回路の発振現象が、このストレスホルモンによって変化することを明らかにした点。以上二点から、前部帯状回の高次機能がストレスによってどのように変化させられるのか、その解明につながることが期待される。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2020 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (5 results)

  • [Journal Article] Chronic Restraint Stress Affects Network Oscillations in the Anterior Cingulate Cortex in Mice2020

    • Author(s)
      Ito Rina、Nakano Takanari、Hojo Yasushi、Hashizume Miki、Koshiba Mamiko、Murakoshi Takayuki
    • Journal Title

      Neuroscience

      Volume: 437 Pages: 172-183

    • DOI

      10.1016/j.neuroscience.2020.04.021

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Identification of cell types that express glucocorticoid receptors in mouse anterior cingulate cortex2019

    • Author(s)
      Yasushi Hojo, Mai Kawata, Rina Ito,Miki Hashizume,Takanari Nakano, Takayuki Murakoshi
    • Organizer
      The 42nd annual meeting of the Japan Neuroscience Society
    • Related Report
      2019 Annual Research Report
  • [Presentation] The effect of glucocorticoid on dopamine receptors in the anterior cingulate cortex of mice2018

    • Author(s)
      Hojo, Y., Matsunaga, T., Komatsu, M., Ito K., Hashimoto T., Takizawa, K., Noguchi S., Ito, R., Hashizume, M., Nakano, T. & Murakoshi, T.
    • Organizer
      日本神経科学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Effects of glucocorticoid on pre-pulse inhibition and network oscillation in anterior cingulate cortex in mice2017

    • Author(s)
      松永洸昴、小松睦実、伊藤健治、瀧澤恵子、伊藤吏那、中野貴成、北條泰嗣、村越隆之
    • Organizer
      第90回日本薬理学会年会
    • Place of Presentation
      長崎ブリックホール
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] プレパルス抑制(PPI)と前部帯状回皮質(ACC)神経回路オシレーションに対するグルココルチコイド投与の影響2017

    • Author(s)
      松永洸昴、小松睦実、伊藤健治、瀧澤恵子、伊藤吏那、中野貴成、北條泰嗣、村越隆之
    • Organizer
      第26回神経行動薬理若手研究者の集い
    • Place of Presentation
      福岡大学
    • Year and Date
      2017-03-14
    • Related Report
      2016 Research-status Report
  • [Presentation] Effect of glucocorticoid on prepulse inhibition and network oscillation in the anterior cingulate cortex of mice2017

    • Author(s)
      Hojo, Y., Matsunaga, T., Komatsu, M., Ito K., Takizawa, K., Ito, R., Hashizume, M., Nakano, T. & Murakoshi, T.
    • Organizer
      日本神経科学会
    • Related Report
      2017 Research-status Report

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Published: 2016-10-24   Modified: 2021-02-19  

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