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Thyroid function disrupting effects of fetal exposure to POPs on ADHD symptoms in children

Research Project

Project/Area Number 18K10042
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 58020:Hygiene and public health-related: including laboratory approach
Research InstitutionHokkaido University

Principal Investigator

Itoh Sachiko  北海道大学, 環境健康科学研究教育センター, 特任講師 (90580936)

Co-Investigator(Kenkyū-buntansha) 荒木 敦子  北海道大学, 環境健康科学研究教育センター, 特任教授 (00619885)
山崎 圭子  北海道大学, 環境健康科学研究教育センター, 特任講師 (60732120)
須山 聡  北海道大学, 大学病院, 特任助教 (70758581)
岸 玲子  北海道大学, 環境健康科学研究教育センター, センター特別招へい教授 (80112449)
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: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords出生コホート / 胎児期曝露 / 内分泌攪乱作用 / 甲状腺ホルモン / 甲状腺抗体 / 注意欠如多動症 / POPs / 抗甲状腺抗体 / ADHD / 出生前向きコホート / POPs
Outline of Final Research Achievements

We investigated the associations between prenatal exposure to perfluoroalkyl substances(PFASs) and the thyroid hormones(THs) and thyroid antibodies(TAs) in maternal and cord blood while considering maternal TAs status. Maternal PFASs were differently associated with THs and TAs of children between in maternal TA-negative group and TAs-positive group, and between boys and girls. Additionally, we investigated the impact of maternal PFAS exposure on children’s attention deficit hyperactive disorder(ADHD) symptoms at 8 years with the mediating effect of TH and TA. Significant inverse associations were found between some PFASs in maternal serum and ADHD symptoms among firstborn children. Assuming causality, we found only one significance: the maternal FT4 mediated 16.3% of the estimated effect of PFUnDA exposure on hyperactivity-impulsivity among firstborn children.

Academic Significance and Societal Importance of the Research Achievements

本研究は、出生後の児の神経発達に重要な役割を果たす母児の甲状腺ホルモンについて、妊娠中の有機フッ素化合物(PFASs)への曝露との関連があること、およびその関連における母の甲状腺ホルモン抗体の関与の可能性を示唆した。妊娠中のPFASs曝露は発達障害のひとつである注意欠如多動症(ADHD)の発症とも関連することが指摘されている。本研究の結果からは甲状腺ホルモン・甲状腺抗体の媒介はわずかであったが、これらの結果は妊娠中のPFASs曝露と子どものADHD発症メカニズム解明の糸口となることが期待される。

Report

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

    (17 results)

All 2020 2019 2018 Other

All Journal Article (9 results) (of which Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (6 results) (of which Int'l Joint Research: 4 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Associations between prenatal exposure to organochlorine pesticides and thyroid hormone levels in mothers and infants: The Hokkaido study on environment and children's health2020

    • Author(s)
      Yamazaki Keiko、Itoh Sachiko、Araki Atsuko、Miyashita Chihiro、Minatoya Machiko、Ikeno Tamiko、Kato Shizue、Fujikura Kaori、Mizutani Futoshi、Chisaki Yoichi、Kishi Reiko
    • Journal Title

      Environmental Research

      Volume: 189 Pages: 109840-109840

    • DOI

      10.1016/j.envres.2020.109840

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Risk factors for motor coordination problems in preschool‐age children2020

    • Author(s)
      Suyama Satoshi、Yagyu Kazuyori、Araki Atsuko、Miyashita Chihiro、Itoh Sachiko、Minatoya Machiko、Yamazaki Keiko、Tamura Naomi、Nakai Akio、Saito Takuya、Kishi Reiko
    • Journal Title

      Pediatrics International

      Volume: 62 Issue: 10 Pages: 1177-1183

    • DOI

      10.1111/ped.14275

    • NAID

      120007160282

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Association between perfluoroalkyl substance exposure and thyroid hormone/thyroid antibody levels in maternal and cord blood: The Hokkaido Study2019

    • Author(s)
      Itoh Sachiko、Araki Atsuko、Miyashita Chihiro、Yamazaki Keiko、Goudarzi Houman、Minatoya Machiko、Ait Bamai Yu、Kobayashi Sumitaka、Okada Emiko、Kashino Ikuko、Yuasa Motoyuki、Baba Toshiaki、Kishi Reiko
    • Journal Title

      Environment International

      Volume: 133 Pages: 105139-105139

    • DOI

      10.1016/j.envint.2019.105139

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] アジアにおける有機フッ素化合物の胎児期曝露が及ぼす時の健康影響2018

    • Author(s)
      伊藤佐智子, 荒木敦子, 宮下ちひろ, 岸玲子
    • Journal Title

      北海道公衆衛生学雑誌

      Volume: 32 (2) Pages: 43-54

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 【表彰論文要旨】環境化学物質曝露、特に残留性有機汚染物質(POPs)による内分泌系への影響~甲状腺並びに性ホルモン2018

    • Author(s)
      伊藤佐智子
    • Journal Title

      北海道公衆衛生学雑誌

      Volume: 32 (2) Pages: 22-26

    • Related Report
      2018 Research-status Report
    • Open Access
  • [Journal Article] Association of Maternal Serum Concentration of Hydroxylated Polychlorinated Biphenyls with Maternal and Neonatal Thyroid Hormones: The Hokkaido Birth Cohort Study2018

    • Author(s)
      Itoh S., Baba T., Yuasa M., Miyashita C., Kobayashi S., Araki A., Sasaki S., Kajiwara J., Hori T., Todaka T., Fujikura K., Nakajima S., Kato S., Kishi R.
    • Journal Title

      Environmental Research

      Volume: 167 Pages: 583-590

    • NAID

      120006941678

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association of prenatal exposure to PCDD/Fs and PCBs with maternal and infant thyroid hormones: The Hokkaido Study on Environment and Children's Health.2018

    • Author(s)
      Baba T., Ito S., Yuasa M., Yoshioka E., Miyashita C., Araki A., Sasaki S., Kobayashi S., Kajiwara J., Hori T., Kato S., Kishi R
    • Journal Title

      Sci Total Environ

      Volume: 615 Pages: 1239-1246

    • NAID

      120006796030

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 環境化学物質による次世代の性ホルモンへの影響2018

    • Author(s)
      荒木敦子, 伊藤佐智子, 宮下ちひろ, 湊屋街子, 岸玲子
    • Journal Title

      日本衛生学雑誌

      Volume: 73 Pages: 313-321

    • NAID

      130007492090

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 2万人規模の出生コーホートと,500人規模の小コーホートからなる北海道スタディが目指してきたもの:環境と子どもの健康―先天異常・発達・アレルギーの15年におよぶ経験と成果2018

    • Author(s)
      岸玲子,荒木敦子,宮下ちひろ,伊藤佐智子,湊屋街子,小林澄貴,山﨑圭子,アイツバマイゆふ,三浦りゅう,田村菜穂美
    • Journal Title

      日本衛生学雑誌

      Volume: 73(2) Pages: 164-177

    • NAID

      130007378561

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 13歳児における随伴性陰性変動と胎児期の有機フッ素化合物曝露濃度との関連―北海道スタディ―2020

    • Author(s)
      山崎圭子, 岸玲子
    • Organizer
      第38回日本生理心理学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Relationship between event-related brain potentials during Go/NoGo task and parental characteristics or attention-deficit/hyperactivity disorder tendency: The Hokkaido study.2019

    • Author(s)
      Yamazaki K., Itoh S., Araki A., Kishi R
    • Organizer
      Cognitive Neuroscience Society at our 26th Annual Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] ERP P3 of school age children and prenatal exposure to dioxin: the Hokkaido Study on Environment and Children’s Health.2018

    • Author(s)
      Yamazaki K., Araki A., Miyashita C., Itoh S., Ikeno T., Nakajima S., Kajiwara J., Hori T., R Kishi
    • Organizer
      IOP 2018(International organization of psychophysiology)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Prenatal exposure to perfluorinated alkyl substances and behavioral and coordination development of children at preschool age: The Hokkaido Study on Environment and Children’s Health2018

    • Author(s)
      Minatoya M., Itoh S., Araki A., Miyashita C., Yamazaki K., Suyama S., Goudarzi H., Okada E., Kashino I., Kishi R
    • Organizer
      ISEE/ES AC2018(International Society for Environmental Epidemiology/International Society of Exposure Science Asia Chapter 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Prenatal exposure to perfluorinated alkyl substances and childhood ADHD risk at 6 years old: the Hokkaido Study on Environment and Children’s Health2018

    • Author(s)
      Yamazaki K., Itoh S., Araki A., Miyashita C., Minatoya M., Tamura N., Goudarzi H., Okada E., Kashino I., Kishi R
    • Organizer
      ISEE/ES AC2018(International Society for Environmental Epidemiology/International Society of Exposure Science Asia Chapter 2018).
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 13歳児におけるGo/NoGo課題時のERPと両親・児の特徴との関連:予備的検討2018

    • Author(s)
      山崎圭子, 岸玲子
    • Organizer
      第36回日本生理心理学大会
    • Related Report
      2018 Research-status Report
  • [Book] Health Impacts of Developmental Exposure to Environmental Chemicals. (Chapter 6) Thyroid Hormone System and Development2020

    • Author(s)
      Itoh S
    • Total Pages
      22
    • Publisher
      Springer Nature
    • ISBN
      9789811505201
    • Related Report
      2020 Annual Research Report
  • [Remarks] 環境と健康に関する研究・北海道スタディ

    • URL

      https://www.cehs.hokudai.ac.jp/hokkaidostudy/outcome/

    • Related Report
      2020 Annual Research Report

URL: 

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

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