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2020 Fiscal Year Annual Research Report

Perfluorinated alkyl substances exposure and onset of puberty - birth cohort and in vitro studies

Research Project

Project/Area Number 18H03035
Research InstitutionHokkaido University

Principal Investigator

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)

Co-Investigator(Kenkyū-buntansha) 小島 弘幸  北海道医療大学, 薬学部, 教授 (10414286)
小林 澄貴  北海道大学, 環境健康科学研究教育センター, 特任講師 (10733371)
守屋 仁彦  北海道大学, 医学研究院, 客員准教授 (20374233)
宮下 ちひろ  北海道大学, 環境健康科学研究教育センター, 特任准教授 (70632389)
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)
アイツバマイ ゆふ  北海道大学, 環境健康科学研究教育センター, 特任講師 (90752907)
池中 良徳  北海道大学, 獣医学研究院, 准教授 (40543509)
Project Period (FY) 2018-04-01 – 2022-03-31
Keywords内分泌かく乱作用 / 有機フッ素化合物 / 出生コーホート / 遺伝子多型 / 核内受容体 / 細胞アッセイ系 / 生殖ホルモン
Outline of Annual Research Achievements

疫学研究では、既存の出生コーホート「北海道スタディ」を用いた。9-11歳の前思春期の子どもから収集した血漿中性ステロイドホルモン14物質の一斉分析法の妥当性評価と測定を実施した。主要なホルモン中央値は、エストラジオール6.78 pg/mL、DHEA-S 270.4 ng/mL、プロゲステロン <LOD、テストステロン 0.13 ng/mLだった。胎児期の有機フッ素化合物(PFAS)曝露によるホルモンへの影響として、エストロゲン受容体ESR1の遺伝子多型と、第2指/第4指比との関連を検討した。第2指/第4指比は、胎児期テストステロン曝露を骨伸長をサロゲートマーカーとして評価する指標である。胎児期のPFOA曝露レベルが高いと、第2指/第4指比は増加して女性傾向を示し、さらにこの関連はESR1のrs2077647のAA型で顕著であった。PFAS曝露によるホルモンへの影響は遺伝子多型によって異なる可能性を示唆した。
ヒト肝細胞に近い性質を示すHepaRG細胞株に0.1% DMSO(コントロール群)、PFOA 10 microM(低用量群)、PFOA 100 microM(高用量群)をそれぞれ24時間曝露して得られたmRNAを用いて網羅的遺伝子発現(GeneChip)解析を行った。コントロール群との比較により、低用量群では上昇97個、抑制93個の遺伝子が、高用量群では上昇517個、抑制479個の遺伝子を見出した(変動倍率1.5以上、P < 0.05)。パスウェイ解析の結果、核内受容体関連遺伝子が最も多く抽出された。特に高倍率変動した遺伝子には、核内受容体PPARalphaやCAR活性化に伴うCYP4A11, CYP3A4, CYP2B6が含まれていた。さらに、いくつかのmiRNAが見出され、これらに制御されている遺伝子群は曝露マーカーになり得る可能性があると考えられた。

Research Progress Status

翌年度、交付申請を辞退するため、記入しない。

Strategy for Future Research Activity

翌年度、交付申請を辞退するため、記入しない。

  • Research Products

    (21 results)

All 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (10 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 10 results,  Open Access: 5 results) Presentation (9 results) (of which Int'l Joint Research: 7 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] University of Antwerp(ベルギー)

    • Country Name
      BELGIUM
    • Counterpart Institution
      University of Antwerp
  • [Journal Article] Secular trends of urinary phthalate metabolites in 7-year old children and association with building characteristics: Hokkaido study on environment and children's health2021

    • Author(s)
      Ketema Rahel Mesfin、Ait Bamai Yu、Ikeda-Araki Atsuko、Saito Takeshi、Kishi Reiko
    • Journal Title

      International Journal of Hygiene and Environmental Health

      Volume: 234 Pages: 113724~113724

    • DOI

      10.1016/j.ijheh.2021.113724

    • Peer Reviewed / Open Access
  • [Journal Article] Combined exposure to phthalate esters and phosphate flame retardants and plasticizers and their associations with wheeze and allergy symptoms among school children2020

    • Author(s)
      Araki Atsuko、Ait Bamai Yu、Bastiaensen Michiel、Van den Eede Nele、Kawai Toshio、Tsuboi Tazuru、Miyashita Chihiro、Itoh Sachiko、Goudarzi Houman、Konno Satoshi、Covaci Adrian、Kishi Reiko
    • Journal Title

      Environmental Research

      Volume: 183 Pages: 109212~109212

    • DOI

      10.1016/j.envres.2020.109212

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Association of exposure to prenatal phthalate esters and bisphenol A and polymorphisms in the ESR1 gene with the second to fourth digit ratio in school-aged children: Data from the Hokkaido study2020

    • Author(s)
      Nishimura Yoko、Moriya Kimihiko、Kobayashi Sumitaka、Araki Atsuko、Sata Fumihiro、Mitsui Takahiko、Itoh Sachiko、Miyashita Chihiro、Cho Kazutoshi、Kon Masafumi、Nakamura Michiko、Kitta Takeya、Murai Sachiyo、Kishi Reiko、Shinohara Nobuo
    • Journal Title

      Steroids

      Volume: 159 Pages: 108637~108637

    • DOI

      10.1016/j.steroids.2020.108637

    • Peer Reviewed / Open Access
  • [Journal Article] Endocrine-Distributing Chemicals and Reproductive Function2020

    • Author(s)
      Araki Atsuko、Jensen Tina Kold
    • Journal Title

      Health Impacts of Developmental Exposure to Environmental Chemicals

      Volume: 5 Pages: 101~129

    • DOI

      10.1007/978-981-15-0520-1_5

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of prenatal exposure to per- and polyfluoroalkyl substances on childhood allergies and common infectious diseases in children up to age 7years: The Hokkaido study on environment and children's health2020

    • Author(s)
      Ait Bamai Yu、Goudarzi Houman、Araki Atsuko、Okada Emiko、Kashino Ikuko、Miyashita Chihiro、Kishi Reiko
    • Journal Title

      Environment International

      Volume: 143 Pages: 105979~105979

    • DOI

      10.1016/j.envint.2020.105979

    • Peer Reviewed / Open Access
  • [Journal Article] Effects of CLIC4 on Fucoxanthinol-Induced Apoptosis in Human Colorectal Cancer Cells2020

    • Author(s)
      Yokoyama Reo、Kojima Hiroyuki、Takai Rie、Ohta Tohru、Maeda Hayato、Miyashita Kazuo、Mutoh Michihiro、Terasaki Masaru
    • Journal Title

      Nutrition and Cancer

      Volume: 73 Pages: 889~898

    • DOI

      10.1080/01635581.2020.1779760

    • Peer Reviewed / Open Access
  • [Journal Article] Alteration of fecal microbiota by fucoxanthin results in prevention of colorectal cancer in AOM/DSS mice2020

    • Author(s)
      Terasaki Masaru、Uehara Osamu、Ogasa Shinya、Sano Taishi、Kubota Atsuhito、Kojima Hiroyuki、Tanaka Takuji、Maeda Hayato、Miyashita Kazuo、Mutoh Michihiro
    • Journal Title

      Carcinogenesis

      Volume: 42 Pages: 210~219

    • DOI

      10.1093/carcin/bgaa100

    • Peer Reviewed
  • [Journal Article] Triclocarban, Triclosan, Bromochlorophene, Chlorophene, and Climbazole Effects on Nuclear Receptors: An in Silico and in Vitro Study2020

    • Author(s)
      Masa Kenda, Natasa Karas Kuzelicki, Mitsuru Iida, Hiroyuki Kojima, Marija Sollner Dolenc
    • Journal Title

      Environmental Health Perspectives

      Volume: 128 Pages: 107005~107005

    • DOI

      10.1289/EHP6596

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Inhibitory effects of organophosphate esters on carboxylesterase activity of rat liver microsomes2020

    • Author(s)
      Tsugoshi Yukie、Watanabe Yoko、Tanikawa Yuka、Inoue Chika、Sugihara Kazumi、Kojima Hiroyuki、Kitamura Shigeyuki
    • Journal Title

      Chemico-Biological Interactions

      Volume: 327 Pages: 109148~109148

    • DOI

      10.1016/j.cbi.2020.109148

    • Peer Reviewed
  • [Journal Article] Continuity of Tumor Microenvironmental Suppression in AOM/DSS Mice by Fucoxanthin May Be Able to Track With Salivary Glycine2020

    • Author(s)
      TERASAKI MASARU、KIMURA RYOTA、KUBOTA ATSUHITO、KOJIMA HIROYUKI、TANAKA TAKUJI、MAEDA HAYATO、MIYASHITA KAZUO、MUTOH MICHIHIRO
    • Journal Title

      In Vivo

      Volume: 34 Pages: 3205~3215

    • DOI

      10.21873/invivo.12156

    • Peer Reviewed
  • [Presentation] Cell-based assay法を用いたUV吸収剤のホルモン受容体を介したエストロゲン・抗アンドロゲン作用の検出2020

    • Author(s)
      1.桜木優太、寺崎将、小島弘幸
    • Organizer
      日本薬学会北海道支部第147回例会
  • [Presentation] ベンゾトリアゾール系UV吸収剤のAhRアゴニスト活性と免疫系に及ぼす影響2020

    • Author(s)
      2.窪田篤人、桜木優太、寺崎将、室本竜太、高田秀重、小島弘幸
    • Organizer
      日本薬学会第141年会
  • [Presentation] Urinary cotinine levels of Japanese school children and associated demographic characteristics: the Hokkaido Study2020

    • Author(s)
      Minatoya M., Miyashita C., Araki A., Ait Bamai Y., Kobayashi S., Kishi R
    • Organizer
      10th VIRTUAL International Conference Children’s Health and Environment
    • Int'l Joint Research
  • [Presentation] Phthalates in house dust and their metabolites in children’s urine summary of the finding in Japan.2020

    • Author(s)
      Ait Bamai Y., Araki A., Kishi R
    • Organizer
      30th Annual Meeting International Society of Exposure Science (ISES)
    • Int'l Joint Research
  • [Presentation] Environmental Chemical Exposure and Children’s Health The Hokkaido Study2020

    • Author(s)
      Araki A
    • Organizer
      8th Sapporo Summer Symposium for One Health (SaSSOH)
    • Int'l Joint Research / Invited
  • [Presentation] Biomonitoring of Phthalate Metabolites in Children: The Hokkaido Study2020

    • Author(s)
      Ketema R.M., Ait Bamai Y., Araki A, Saito T, Kishi R
    • Organizer
      8th Sapporo Summer Symposium for One Health
    • Int'l Joint Research
  • [Presentation] Mercury levels in pregnant women in Japanese general population and children’s birth size.2020

    • Author(s)
      Araki A., Miyashita C., Kobayashi S., Kishi R
    • Organizer
      Annual Conference of the International Society for Environmental Epidemiology
    • Int'l Joint Research
  • [Presentation] PFAS and BPA exposures in utero and their alteration of DNA methylation at birth: the Hokkaido Study in collaboration with Taiwan cohorts.2020

    • Author(s)
      Araki A., Miyashita C., Miura R., Wang SL., ChenML., Kishi R
    • Organizer
      32nd Annual Conference of the International Society for Environmental Epidemiology
    • Int'l Joint Research
  • [Presentation] Changing trends in urinary phthalate metabolites in elementary school children; 2012-20172020

    • Author(s)
      Ketema R.M., Ait Bamai Y., Araki A, Saito T, Kishi R
    • Organizer
      32nd Annual Conference of the International Society for Environmental Epidemiology
    • Int'l Joint Research
  • [Remarks] 環境と子どもの健康に関する北海道研究・北海道スタディ「これまでにわかったこと」

    • URL

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

URL: 

Published: 2021-12-27  

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