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The development of the novel strategy for the prevention of PTSD, and of the novel treatment using neuromodulation.

Research Project

Project/Area Number 18K07562
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52030:Psychiatry-related
Research InstitutionHiroshima University

Principal Investigator

Fuchikami Manabu  広島大学, 医系科学研究科(医), 講師 (40403571)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsPTSDの発症機序 / PTSDの予防法 / PTSDの新規治療法 / PTSDの異常な神経回路 / PTSD / グルココルチコイド / 神経活動操作
Outline of Final Research Achievements

Although the relationship between PTSD and corticosteroids is widely recognized, the present study is the first study indicated that activation of hippocampal glucocorticoid receptor (GR) in response to severe stress triggers the pathophysiological cascade that leads to impaired fear extinction, and the inhibition of hippocampal GR immediately after stress could be useful for preventing the development of PTSD.
In addition, neuromodulation approaches such as deep brain stimulation, may represent a promising treatment option for patients with PTSD who remain symptomatic even after conventional psychotherapy and/or medications, and the combined approach of neuromodulation with exposure-based therapy may lead to better therapeutic responses in PTSD. Our results indicated that neuronal activation with an adjunctive combination of exposure therapy could be useful for treating the impaired fear extinction characteristic of patients with PTSD.

Academic Significance and Societal Importance of the Research Achievements

外傷的ストレスによってストレスホルモンが放出され、PTSDの発症に至る分子生物学的機序の一端を明らかにする一方で、形成されたPTSDの神経回路異常を神経活動操作によって修正する方法を提唱するなど、基礎神経科学、臨床精神医学の双方の発展に寄与する重要な知見が得られたと考えられる。

Report

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

    (6 results)

All 2021 2020 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Chemogenetic activation of the mPFC alleviates impaired fear memory extinction in an animal model of PTSD2021

    • Author(s)
      Omura Jun、Fuchikami Manabu、Araki Motoaki、Miyagi Tatsuhiro、Okamoto Yasumasa、Morinobu Shigeru
    • Journal Title

      Progress in Neuro-Psychopharmacology and Biological Psychiatry

      Volume: 108 Pages: 110090-110090

    • DOI

      10.1016/j.pnpbp.2020.110090

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The role of glucocorticoid receptors in the induction and prevention of hippocampal abnormalities in an animal model of posttraumtic stress disorder2020

    • Author(s)
      Araki M, Fuchikami M, Omura J, Miyagi T, Nagashima N, Okamoto Y, Morinobu S
    • Journal Title

      Psychopharmacology

      Volume: in press Issue: 7 Pages: 2125-2137

    • DOI

      10.1007/s00213-020-05523-x

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] The role of glucocorticoid receptor in the induction and the prevention of the hippocampal abnormalities in an animal model of PTSD2018

    • Author(s)
      Motoaki Araki, Manabu Fuchikami, Jun Omura, Tatsuhiro Miyagi, Nobuyuki Nagashima, Shigeru Morinobu, Yasumasa Okamoto
    • Organizer
      第40回日本生物学的精神医学会・第61回日本神経化学会大会 合同年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Chemogenetic activation of medial prefrontal cortex excitatory neurons alleviated the impaired fear extinction of an animal model of PTSD.2018

    • Author(s)
      Jun Omura, Manabu Fuchikami, Motoaki Araki, Tatsuhiro Miyagi, Sigeru Morinobu
    • Organizer
      第40回日本生物学的精神医学会・第61回日本神経化学会大会 合同年会
    • Related Report
      2018 Research-status Report
  • [Presentation] The role of glucocorticoid receptor in the induction and the prevention of the hippocampal abnormalities in an animal model of PTSD2018

    • Author(s)
      Motoaki Araki, Manabu Fuchikami, Jun Omura, Tatsuhiro Miyagi, Nobuyuki Nagashima, Shigeru Morinobu, Yasumasa Okamoto
    • Organizer
      Society for Neuroscience 2018 Annual Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Chemogenetic activation of medial prefrontal cortex excitatory neurons alleviated the impaired fear extinction of an animal model of PTSD.2018

    • Author(s)
      Jun Omura, Manabu Fuchikami, Motoaki Araki, Tatsuhiro Miyagi, Sigeru Morinobu, Yasumasa Okamoto
    • Organizer
      Society for Neuroscience 2018 Annual Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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

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