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Will the extension of the duration of social isolation not induce the aggravation of the depressive state, but induce the manic state?

Research Project

Project/Area Number 16K10208
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Psychiatric science
Research InstitutionUniversity of Fukui

Principal Investigator

Omata Naoto  福井大学, 学術研究院医学系部門, 客員教授 (30334832)

Co-Investigator(Kenkyū-buntansha) 清野 泰  福井大学, 高エネルギー医学研究センター, 教授 (50305603)
Research Collaborator MIZUNO tomoyuki  
MATSUMOTO hiyori  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
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: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords社会的孤立 / 短期間 / 長期間 / うつ様行動 / 不安様行動 / リチウム / 神経可塑性 / ノルエピネフリン / 気分障害 / 病態仮説 / 糖代謝
Outline of Final Research Achievements

The loading of social isolation (SI) for 3 weeks to rats induced depressive-like or anxiety-related behavior, but the extension of the duration of SI to 8 weeks decreased (not increased) these behavioral changes. Furthermore, these behavioral changes were normalized by lithium administration. The changes of the expression of neuronal plasticity-related proteins were observed after the loading of SI for 3 weeks, and these changes became clearer after the loading of SI for 8 weeks.
From these results, it was suggested that the damage of neuronal plasticity become more severe as the duration of the loading of SI is extended, and depressive state followed by manic state appears. Lithium might exert its clinical effect against depressive and manic states by the improvement of neuronal plasticity.

Academic Significance and Societal Importance of the Research Achievements

あるストレスに持続的に暴露されると、神経可塑性の障害が重篤化していくのに伴い、うつ状態から躁状態に移行する可能性が示唆された。このことから、躁は神経可塑性の障害がうつ以上に進行した状態ということになる。本研究により、気分障害の新たな病態仮説が示すことが出来た。従来の創薬の基盤でもあるモノアミン仮説とは異なる仮説であり、今後は新たな創薬に繋がっていく可能性がある。また、精神病理学的な立場からは、躁の方がうつよりも深い階層に位置するとも論じられている。本研究は、この立場の生物学的な基盤を示したとも考えられ、従って、本研究は生物学的精神医学と精神病理学との架け橋となっていくことが期待される。

Report

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

    (7 results)

All 2019 2018 2017 2016

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] Psychosis is an extension of mood swings from the perspective of neuronal plasticity impairments2019

    • Author(s)
      Mizuno T.、Matsumoto H.、Mita K.、Kogauchi S.、Kiyono Y.、Kosaka H.、Omata N.
    • Journal Title

      Medical Hypotheses

      Volume: 124 Pages: 37-39

    • DOI

      10.1016/j.mehy.2019.02.001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A variant at 9q34.11 is associated with HLA-DQB1*06:02 negative essential hypersomnia2018

    • Author(s)
      Miyagawa T, Khor SS, Toyoda H, Kanbayashi T, Imanishi A, Sagawa Y, Kotorii N, Kotorii T, Ariyoshi Y, Hashizume Y, Ogi K, Hiejima H, Kamei Y, Hida A, et al.
    • Journal Title

      J Hum Genet

      Volume: 63 Issue: 12 Pages: 1259-1267

    • DOI

      10.1038/s10038-018-0518-8

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mania is an extension of depression from the perspective of neuronal plasticity ? Evaluation of our hypothesis through the affective spectrum2017

    • Author(s)
      Omata Naoto、Mizuno Tomoyuki、Matsumoto Hiyori、Mitsuya Hironori、Mita Kayo、Kiyono Yasushi、Wada Yuji
    • Journal Title

      Medical Hypotheses

      Volume: 102 Pages: 87-88

    • DOI

      10.1016/j.mehy.2017.03.018

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Scopolamine Ointment for Clozapine-Associated Sialorrhea: A Case Report.2017

    • Author(s)
      Goto T, Kato M, Matsumura Y, Omata N, Yoshida M, Watanabe K, Takahashi T, Higashima M, Wada Y.
    • Journal Title

      J Clin Psychopharmacol

      Volume: 37 Issue: 1 Pages: 106-7

    • DOI

      10.1097/jcp.0000000000000613

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] 福井大学精神医学講座の「気分障害モデル動物における中枢神経系の神経可塑性および酸化ストレス の定量評価研究」2019

    • Author(s)
      水野智之、小俣直人、松本日和、三田香代、小垣内咲子、清野泰、小坂浩隆
    • Organizer
      第115回日本精神神経学会学術総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 精神疾患における化学的不均衡仮説への疑問2017

    • Author(s)
      小俣直人、水野智之、松本日和、三田香代、和田有司
    • Organizer
      第36回躁うつ病の薬理・生化学的研究懇話会
    • Related Report
      2017 Research-status Report
  • [Presentation] 社会的孤立の負荷期間延長による情動変化に対するリチウムの効果2016

    • Author(s)
      松本日和、小俣直人、水野智之、三田香代、三屋博宣、和田有司
    • Organizer
      第3回西日本生物学的精神医学研究会
    • Place of Presentation
      大阪第一ホテル(大阪市)
    • Year and Date
      2016-09-30
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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