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Modification of inorganic arsenic toxicity in children by selenium : taking telomere length as the endpoint

Research Project

Project/Area Number 16H05254
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Hygiene and public health
Research InstitutionNational Institute for Environmental Studies

Principal Investigator

Watanabe Chiho  国立研究開発法人国立環境研究所, その他部局等, 理事長 (70220902)

Co-Investigator(Kenkyū-buntansha) 稲岡 司  佐賀大学, 農学部, 教授 (60176386)
吉永 淳  東洋大学, 生命科学部, 教授 (70222396)
小西 祥子  東京大学, 大学院医学系研究科(医学部), 准教授 (70451771)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2018: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2017: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2016: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywordsひ素 / カドミウム / セレニウム / テロメア / テロメア長 / ひ素` / セレン / 酸化ストレス / 東南アジア / 南アジア / 小児期曝露 / アジア / 低体重出生 / 鉛 / 臍帯血 / 周産期曝露 / 環境 / 免疫機能 / ヒ素
Outline of Final Research Achievements

Arsenic contamination of groundwater has been reported for various Southeast and South Asian countries; in a couple of regions, serious health problem is already apparent. In the current study, we recruited approx. 400 mother-newborn pairs and examined their arsenic (as well as cadmium and lead) exposure and its potential effects on the telomere length (TL). As the result, urinary concentrations of arsenic and cadmium negatively correlated with cord blood TL. Since TL is associated with the risk of various chronic diseases (like CHD), and newborn TL is a major determinant of adult TL (i.e., TL is reported to have a tracking nature), this relationship will be worth to further follow up. As far as we know, this is the first report that showed perinatal exposure to metals affects TL.

Academic Significance and Societal Importance of the Research Achievements

周産期の金属類への曝露が新生児のテロメア長(TL)と関係があることを示した初の報告である.成人期におけるTLは多くの慢性疾患のリスクを増加することが示されているが,成人期のTLの個人差は,新生児期にすでに固定されていることが示唆されており,その意味で,新生児期のTLに影響を与える要因を知ることは重要である.今回の結果はひ素では中等度の曝露レベルで,またカドミウムでは腎障害に至らないような濃度レベルでの影響であり,各金属の毒性学においても今後,検討に値するものと考える.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (14 results)

All 2019 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Int'l Joint Research] ヤンゴン医科大学(ミャンマー)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Yangon Medical University I(Myanmar)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Arsenic Exposure through drinking water and oxidative stress status: A cross-sectional study in the Ayeyarwady region, Myanmar.2019

    • Author(s)
      Kyi Mar Wai, Masahiro Umezaki, Satoko Kosaka, Ohn Mar, Mitsutoshi Umemura, Chiho Watanabe
    • Journal Title

      Journal of Trace Elements in Medicine and Biology

      Volume: -

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] In-utero arsenic exposure and growth of infants from birth to 6 months of age: a prospective cohort study in rural Bangladesh2019

    • Author(s)
      Kyi Mar Wai, Ping Han Ser, Sk Akhtar Ahmad, Rabeya Yasmin, Yasunori Ito, Shoko Konishi, Chiho Watanabe
    • Journal Title

      International Journal of Environmental Health Research

      Volume: -

    • Related Report
      2018 Annual Research Report
  • [Journal Article] In-utero arsenic exposure and growth of infants from birth to 6 months of age: a prospective cohort study in rural Bangladesh2019

    • Author(s)
      Wai Kyi Mar、Ser Ping Han、Ahmad Sk Akhtar、Yasmin Rabeya、Ito Yasunori、Konishi Shoko、Umezaki Masahiro、Watanabe Chiho
    • Journal Title

      International Journal of Environmental Health Research

      Volume: - Issue: 4 Pages: 1-14

    • DOI

      10.1080/09603123.2019.1597835

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Impact of prenatal heavy metal exposure on newborn leucocyte telomere length: A birth-cohort study2018

    • Author(s)
      Kyi Mar Wai, Masahiro Umezaki, Satoko Kosaka, Ohn Mar, Mitsutoshi Umemura, Toki Fillman, Chiho Watanabe
    • Journal Title

      Environmental Pollution

      Volume: 243 Pages: 1414-1421

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Prenatal Heavy Metal Exposure and Adverse Birth Outcomes in Myanmar: A Birth-Cohort Study2017

    • Author(s)
      Wai KM, Mar O, Kosaka S, Umemura M, Watanabe C
    • Journal Title

      International Journal of Environmental Research and Public Health

      Volume: 14 Issue: 11 Pages: 1339-1339

    • DOI

      10.3390/ijerph14111339

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Behavioral aspects of chemical use: balancing an intrinsic conflict.2017

    • Author(s)
      Chiho Watanabe
    • Journal Title

      Current Opinion in Environmental Sustainability

      Volume: 25 Pages: 84-89

    • DOI

      10.1016/j.cosust.2017.08.001

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] Environmental Health in Human Ecological Perspective: Introduction.2018

    • Author(s)
      C. Watanabe
    • Organizer
      International Conference of the Society for Human Ecology, Lisbon. July 7-10, 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Environmental contamination by heavy metals and its impact on maternal and child health in Myanmar.2018

    • Author(s)
      Kyi Mar Wai
    • Organizer
      International Conference of the Society for Human Ecology, Lisbon. July 7-10, 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] カドミウム曝露とテロメア長との関連.2018

    • Author(s)
      水野 佑紀,小西 祥子,今井 秀樹,藤森 英治,児島 伸彦,吉永 淳.
    • Organizer
      メタルバイオサイエンス研究会2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] 重金属類曝露とテロメア長との関連2018

    • Author(s)
      水野 佑紀,小西 祥子,今井 秀樹,藤森 英治,児島 伸彦,吉永 淳.
    • Organizer
      第6回メタロミクス研究フォーラム
    • Related Report
      2018 Annual Research Report
  • [Presentation] Prenatal Cadmium Exposure and Adverse Birth Outcomes in Myanmar: A Birth-Cohort Study2017

    • Author(s)
      Kyi Mar Wai, Chiho WATANABE
    • Organizer
      49th Asia Pacific Consortium for Public Health at Yonsei University International Campus, South Korea
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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