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Effects of pesticide exposure on central synapse formation

Research Project

Project/Area Number 19K19407
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 58020:Hygiene and public health-related: including laboratory approach
Research InstitutionUniversity of Toyama

Principal Investigator

Izumi Hironori  富山大学, 医学部, 技術専門職員 (00377342)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords農薬曝露 / 神経シナプス形成 / 発達神経毒性 / 有機リン系農薬 / ピレスロイド系農薬 / 神経毒性
Outline of Research at the Start

農薬曝露による神経系への影響として、高次脳機能障害を伴う発達障害が問題視されている。本研究では、グルホシネート(有機リン系農薬)やデルタメトリン(ピレスロイド系農薬)の曝露による神経シナプス形成への影響評価を通して、神経発達障害の病態発症機構の解明に取り組む。農薬曝露に起因するシナプス病態を明らかにすることで、多様な神経発達障害の治療戦略の基盤構築に大きく貢献できる。

Outline of Final Research Achievements

The purpose of this study is to elucidate the pathogenic mechanism underlying neurodevelopmental disorders through evaluation of the effects of pesticide exposure on the synapse formation in central nervous system.
Our study showed changes in the amount of presynaptic differentiation in cultured neurons of fetal mice with maternal exposure to organophosphorus pesticide, glufosinate ammonium (GLA) compared to saline-control group. We also identified differentially expressed genes related to nervous system development between GLA-treated and saline-control groups by the transcriptome analysis of primary cultured cortical neurons.
On the other hand, through the production and analysis of Ptprd gene mutant mice, we found that this gene contributes to the induction of specific presynaptic differentiation. In addition, we demonstrated that changes in social behavior was induced in mutant mice in which presynaptic competitive interactions are genetically biased.

Academic Significance and Societal Importance of the Research Achievements

本研究によって、これまで農薬曝露による中枢神経系への影響では明らかになっていなかった神経シナプスにおける病態を新たな知見として得られたことは学術的に大きな意義がある。本研究の応用により、農薬を含む化学物質が高次脳機能に与える影響を簡便且つ高感度に検出可能なリスク評価法の開発が期待できる。また、シナプス病態から学習・行動異常を引き起こす細胞集団の特徴付けを行うことで、神経発達障害に対する治療戦略の基盤構築に結び付くと考えられる。

Report

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

    (11 results)

All 2022 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results)

  • [Journal Article] グルホシネートの発達神経毒性のリスク評価2022

    • Author(s)
      和泉宏謙, 出村舞奈, 今井彩子, 吉田知之, 小川良平, 森寿
    • Journal Title

      生理学技術研究会報告

      Volume: 44

    • Related Report
      2021 Annual Research Report
  • [Journal Article] BST1 regulates nicotinamide riboside metabolism via its glycohydrolase and base-exchange activities.2021

    • Author(s)
      Yaku K, Palikhe S, Izumi H, Yoshida T, Hikosaka K, Hayat F, Karim M, Iqbal T, Nitta Y, Sato A, Migaud ME, Ishihara K, Mori H, Nakagawa T
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 6767-6767

    • DOI

      10.1038/s41467-021-27080-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Generation and characterization of a Meflin-CreERT2 transgenic line for lineage tracing in white adipose tissue2021

    • Author(s)
      Kuwano Takahide, Izumi Hironori, Aslam Muhammad Rahil, Igarashi Yoshiko, Bilal Muhammad, Nishimura Ayumi, Watanabe Yoshiyuki, Nawaz Allah, Kado Tomonobu, Ikuta Koichi, Yamamoto Seiji, Sasahara Masakiyo, Fujisaka Shiho, Yagi Kunimasa, Mori Hisashi, Tobe Kazuyuki
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 3 Pages: e0248267-e0248267

    • DOI

      10.1371/journal.pone.0248267

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Canonical versus non-canonical transsynaptic signaling of neuroligin 3 tunes development of sociality in mice2021

    • Author(s)
      Yoshida T, Yamagata A, Imai A, Kim J, Izumi H, Nakashima S, Shiroshima T, Maeda A, Iwasawa-Okamoto S, Azechi K, Osaka F, Saitoh T, Maenaka K, Shimada T, Fukata Y, Fukata M, Matsumoto J, Nishijo H, Takao K, Tanaka S, Okabe S, Tabuchi K, Uemura T, Mishina M, Mori H & Fukai S
    • Journal Title

      Nature Communications

      Volume: 12(1) Issue: 1 Pages: 1848-1848

    • DOI

      10.1038/s41467-021-22059-6

    • NAID

      120006996978

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CRISPR/Cas9 システムを用いたノックインマウスの作製2021

    • Author(s)
      和泉宏謙、吉田知之、森寿
    • Journal Title

      生理学技術研究会報告

      Volume: 43

    • Related Report
      2020 Research-status Report
  • [Presentation] グルホシネートの発達神経毒性のリスク評価2022

    • Author(s)
      和泉宏謙, 出村舞奈, 今井彩子, 吉田知之, 小川良平, 森寿
    • Organizer
      第44回生理学技術研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] シナプス形成を指標としたグルホシネート曝露による中枢神経系への影響評価2021

    • Author(s)
      和泉宏謙、出村舞奈、今井彩子、吉田知之、小川良平、森寿
    • Organizer
      第55回日本実験動物技術者協会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Effect of the herbicide glufosinate-ammonium exposure on neural synapse formation2021

    • Author(s)
      Izumi Hironori, Maina Demura, Ayako Imai, Tomoyuki Yoshida, Ryohei Ogawa, Hisashi Mori
    • Organizer
      第4回医薬品毒性機序研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 新規ルシフェラーゼ基質アカルミネ塩酸塩「TokeOni」を利用した生体マウス脳内における神経活動依存的なBDNF遺伝子発現誘導の可視化2021

    • Author(s)
      福地守, 齊藤亮平, 齊藤亮平, 牧昌次郎, 萩原なみ, 中島夢奈, 和泉宏謙, 三反崎聖, 森寿
    • Organizer
      第141回日本薬学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] CRISPR/Cas9 システムを用いたノックインマウスの作製2021

    • Author(s)
      和泉宏謙
    • Organizer
      第43回生理学技術研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] グルホシネートばく露に伴う中枢神経系への影響評価2020

    • Author(s)
      和泉宏謙、出村舞奈、今井彩子、吉田知之、小川良平、森寿
    • Organizer
      第93回日本薬理学会年会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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