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The effect of omega-3 polyunsaturated fatty acids on antidepressant-like behavior

Research Project

Project/Area Number 19K08086
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52030:Psychiatry-related
Research InstitutionNational Center of Neurology and Psychiatry

Principal Investigator

Takeuchi Eri  国立研究開発法人国立精神・神経医療研究センター, 神経研究所 遺伝子疾患治療研究部, 科研費研究員 (70712777)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsω-3多価不飽和脂肪酸 / うつ様行動 / 情動行動 / 多価不飽和脂肪酸 / 抑うつ / 側坐核
Outline of Research at the Start

多くの疫学調査から体内に摂取されたω-3多価不飽和脂肪酸はうつ病の症状を改善させることが示されているが、その作用メカニズムについては不明であった。申請者らはω-3多価不飽和脂肪酸を食摂取したマウスは抑うつ様行動が減少し、この減少には腹側被蓋野-側坐核ドパミン神経系が関与することを明らかにした。そこで本研究では、ω-3多価不飽和脂肪酸摂取により腹側被蓋野-側坐核ドパミン神経の活動を変化させる分子機構の同定および情動行動を変化させる神経機構について検討し、抑うつ様行動を減少させるメカニズムの解明を目指す。

Outline of Final Research Achievements

The beneficial effects of omega-3 polyunsaturated fatty acid (ω-3 PUFA) supplementation on major depressive disorder have been actively studied, but the underlying mechanism remains unknown. The present study examined the mechanisms that behavioral changes in mice fed a diet high in ω-3 PUFAs (high ω-3 diet). Mice fed a high ω-3 diet exerted shorter immobility times in the forced swim test (FST) than mice fed a control diet. The shorter immobility times were observed in both male and female mice. The reduction of immobility time was abolished by microinjection of an antagonist for D2-like receptor and an antagonist for D1-like receptor into the nucleus accumbens (NAc). Moreover, we found that tyrosine hydroxylase-positive cells increased in the ventral tegmental area (VTA) in mice fed the high ω-3 diet. These results suggest that modulation of the VTA-NAc dopaminergic pathway is one of the mechanisms by which a high ω-3 diet reduces the immobility behavior in the mouse FST.

Academic Significance and Societal Importance of the Research Achievements

多くの疫学調査から、体内に摂取されたω-3多価不飽和脂肪酸はうつ病の症状を改善させることが示されているが、その作用メカニズムについては不明であった。本研究成果から、ω-3多価不飽和脂肪酸の摂取によるうつ様行動の減少には側坐核-腹側被蓋野ドパミン神経系が関与することが示唆された。本研究成果は、栄養摂取による新規治療法の開発にも繋がることが期待される。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2022 2020 2019

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] デュシェンヌ型筋ジストロフィーの脳症状に対するエクソン・スキップ治療2022

    • Author(s)
      竹内絵理、青木吉嗣
    • Journal Title

      Dementia Japan : 日本認知症学会誌

      Volume: 36 Pages: 265-270

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Participation of the nucleus accumbens dopaminergic system in the antidepressant-like actions of a diet rich in omega-3 polyunsaturated fatty acids2020

    • Author(s)
      Takeuchi Eri、Yamada Daisuke、Suzuki Satoshi、Saitoh Akiyoshi、Itoh Masayuki、Hayashi Takashi、Yamada Mitsuhiko、Wada Keiji、Sekiguchi Masayuki
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 3 Pages: e0230647-e0230647

    • DOI

      10.1371/journal.pone.0230647

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 筋ジストロフィー犬CXMDJは不安様行動が増加する2022

    • Author(s)
      竹内絵理、橋本泰昌、今村道博、本橋紀夫、菊水健史、関口正幸、青木吉嗣
    • Organizer
      第8回日本筋学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Role of dystrophin Dp427 in neurobehavior of canines with Duchenne Muscular Dystrophy2022

    • Author(s)
      Eri Takeuchi, Yasumasa Hashimoto, Michihiro Imamura, Takefumi Kikusui, Masayuki Sekiguchi, Yoshitsugu Aoki
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 筋ジストロフィー犬の中枢神経症状の解析2022

    • Author(s)
      竹内絵理、橋本泰昌、今村道博、菊水健史、関口正幸、青木吉嗣
    • Organizer
      第69回日本実験動物学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Dp427欠損の筋ジストロフィー犬を対象とした中枢神経症状の解析2022

    • Author(s)
      竹内絵理、青木吉嗣
    • Organizer
      第9回筋ジストロフィーのCNS障害研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] The nucleus accumbens dopaminergic systems involve in anti-depressant-like actions of a diet rich in ω-3 polyunsaturated fatty acid in mice2019

    • Author(s)
      Eri Takeuchi, Daisuke Yamada, Satoshi Suzuki, Akiyoshi Saitoh, Masayuki Itoh, Takashi Hayashi, Mitsuhiko Yamada, Keiji Wada and Masayuki Sekiguchi
    • Organizer
      6th Congress of Asian College of Neuropsychopharmacology (6th AsCNP)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Involvement of the ventral tegmental area-nucleus accumbens dopaminergic systems in antidepressant-like action of omega-3 polyunsaturated fatty acid-rich diets2019

    • Author(s)
      Eri Takeuchi, Daisuke Yamada, Akiyoshi Saitoh, Masayuki Itoh, Takashi Hayashi, Mitsuhiko Yamada, Keiji Wada and Masayuki Sekiguchi
    • Organizer
      Neuro2019
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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