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Do Hg, Pb, and Al exposures effect development of non-cognitive and prefrontal function?

Research Project

Project/Area Number 20H01664
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 09030:Childhood and nursery/pre-school education-related
Research InstitutionKokugakuin University Hokkaido Junior College

Principal Investigator

KUSANAGI Emiko  國學院大學北海道短期大学部, その他部局等, 教授 (90341718)

Co-Investigator(Kenkyū-buntansha) 星 信子  札幌大谷大学短期大学部, その他部局等, 教授 (20320575)
高橋 義信  札幌医科大学, 医療人育成センター, 准教授 (30226906)
中村 光一  北海道大学, 歯学研究院, 助教 (50580932)
八若 保孝  北海道大学, 歯学研究院, 教授 (60230603)
森口 佑介  京都大学, 文学研究科, 准教授 (80546581)
高橋 文  北海道情報大学, 医療情報学部, 教授 (50736098)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Keywords思春期 / 金属暴露 / 気質 / 実行機能 / 運動機能 / 家庭環境 / 子どもの困難さ / 問題行動 / 運動発達 / 前頭葉機能 / 金属曝露
Outline of Research at the Start

近年、発達障害児が増加している。本障害の認知度上昇、診断基準の変更、診断の低年齢化が原因ともいわれるが、これら説明率は約半分に過ぎず、残りの増加原因は明らになっていない。現在リスク要因の一つとして挙がっている金属暴露に着目し、疾患・障害の発現以前に子どもの非認知能力である気質や脳機能に影響が及ぶ可能性を仮定し、これまで幼児期及び学童期の子どもの縦断研究を実施してきた。これら対象者を追跡し、急激に心理・脳機能に変化が生じる思春期において気質、問題行動、実行機能、脳前頭葉機能、金属暴露量を再度測定し、これら心理・脳機能特性に及ぼす金属暴露の影響を検討し、同時に金属暴露源についても調査を行う。

Outline of Final Research Achievements

This longitudinal study measured participants' exposure to toxic and essential metals during adolescence, as well as their home environment and nutritional intake, to examine the effects on their temperament, executive function, behavioral difficulties, and motor functions. The development of effortful control (EC) during adolescence was observed to be negatively related to mercury exposure in early childhood. Emotional problems were positively related to mercury exposure during the fetal period and infancy. Adolescent selenium exposure was positively related to executive function. In boys, aluminum exposure during adolescence was negatively related to EC, and lead exposure in early childhood was negatively related to fine motor development, indicating a higher susceptibility of boys to toxic metals. Children's difficulties were more strongly related to their EC than to parenting behaviors. The intake of essential metals and nutrients was considered important for the development of EC.

Academic Significance and Societal Importance of the Research Achievements

有害・必須の複数金属暴露量についての研究、また長期暴露データが本邦に乏しい中、思春期の子どもの複数金属暴露量についてのデータは貴重な資料となる。また暴露量の個人差が幼児期から安定していることを示した。半数以上の子どもの水銀暴露量は、米国環境保護庁等が推奨する毛髪中水銀濃度(1.0 μg/g未満)を超えていた。さらに子どもの問題行動には養育行動よりもECが強く関係し、EC発達には必須金属や栄養素摂取が関係することを示した。各家庭の測定した水道水中有害金属濃度は水道法の基準を満たしていた。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (14 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 4 results) Remarks (1 results)

  • [Int'l Joint Research] Bowdoin College(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Levels of Toxic and Essential Elements and Associated Factors in the Hair of Japanese Young Children2023

    • Author(s)
      Kusanagi Emiko、Takamura Hitoshi、Hoshi Nobuko、Chen Shing-Jen、Adachi Mayumi
    • Journal Title

      International Journal of Environmental Research and Public Health

      Volume: 20 Issue: 2 Pages: 1186-1186

    • DOI

      10.3390/ijerph20021186

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 思春期までの子どもの気質に関する長期縦断研究(1) 思春期子どもの気質及び問題行動と胎・乳児期から学童期金属暴露との関係2024

    • Author(s)
      草薙恵美子・ 星信子・ 高橋義信・ 中村光一・ 八若保孝・ 鈴木翔斗・ 武田希美・ 髙村仁知・ 森口佑介
    • Organizer
      日本発達心理学会第35回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 思春期までの子どもの気質に関する長期縦断研究(2)幼児期から思春期までの気質の安定性2024

    • Author(s)
      星信子・ 草薙恵美子・ 高橋義信・ 森口佑介
    • Organizer
      日本発達心理学会第35回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] The longitudinal relationships of metal exposures and nutrition with adolescent development2024

    • Author(s)
      Kusanagi, E., Hoshi, N., Takahashi, Y., Nakamura, K., Yawaka, Y., Takeda, N., Takamura, H., & Moriguchi, Y.
    • Organizer
      The 33rd International Congress of Psychology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Longitudinal Effects of the Home Environment on the Temperament of Japanese Adolescents2024

    • Author(s)
      Hoshi, N., Kusanagi, E., Takahashi, Y., & Moriguchi, Y.
    • Organizer
      The 33rd International Congress of Psychology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 子どもの乳歯エナメル質中金属濃度と毛髪中金属濃度の関係2023

    • Author(s)
      草薙恵美子, 中村光一, 八若保孝, 鈴木翔斗, 武田希美, 髙村仁知, 高橋義信, 星信子, 森口佑介
    • Organizer
      第2回環境化学物質3学会合同大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Level of Metals in Deciduous Teeth and the Development of Children’s Temperament2023

    • Author(s)
      Kusanagi, E., Nakamura, K., Yawaka, Y., Suzuk, S., Takeda, N., Hoshi, N., Takahashi, N., Chen, S.-J., & Moriguchi, Y.
    • Organizer
      Society for Research in Child Development 2023 Biennial Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 胎・乳幼児期金属暴露と子どもの発達2023

    • Author(s)
      草薙恵美子・中村光一・八若保孝・鈴木翔斗・武田希美・星信子・高橋 義信・森口 佑介
    • Organizer
      日本発達心理学会第34回大会発表
    • Related Report
      2021 Annual Research Report
  • [Presentation] 思春期問題行動への学童期気質及び養育行動の影響2022

    • Author(s)
      草薙恵美子・高橋 義信・星 信子・森口 佑介・髙村 仁知
    • Organizer
      日本心理学会第86回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 金属暴露および栄養素と前頭葉機能の発達の関連2021

    • Author(s)
      森口 佑介・草薙 恵美子・高橋 義信・髙村 仁知・星 信子・陳 省仁
    • Organizer
      日本赤ちゃん学会第21回学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Effects of the Home Environment, Exposure to Metals, and Food Nutrition on Temperament of Japanese Children2021

    • Author(s)
      Hoshi, N., Moriguchi, Y., Kusanagi, E., Takamura, H., & Takahashi, Y.
    • Organizer
      The 32th International Congress of Psychology
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 子どもが幼児期から学童期にかけての父母の気質の安定性2021

    • Author(s)
      星信子・草薙恵美子・森口 祐介・高村 仁知
    • Organizer
      日本心理学会第85回大会
    • Related Report
      2020 Annual Research Report
  • [Remarks] The Global Temperament Project

    • URL

      https://doi.org/10.1037/dev0001732

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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