Maternal Exposure to Fine Particulate Matter and Its Chemical Components Increasing the Occurrence of Gestational Diabetes Mellitus in Pregnant Japanese Women

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  • Michikawa Takehiro
    Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo, Japan
  • Morokuma Seiichi
    Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
  • Yamazaki Shin
    Health and Environmental Risk Division, National Institute for Environmental Studies, Ibaraki, Japan
  • Yoshino Ayako
    Regional Environment Conservation Division, National Institute for Environmental Studies, Ibaraki, Japan
  • Sugata Seiji
    Regional Environment Conservation Division, National Institute for Environmental Studies, Ibaraki, Japan
  • Takami Akinori
    Regional Environment Conservation Division, National Institute for Environmental Studies, Ibaraki, Japan
  • Nakahara Kazushige
    Department of Obstetrics and Gynaecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
  • Saito Shinji
    Tokyo Metropolitan Research Institute for Environmental Protection, Tokyo, Japan
  • Hoshi Junya
    Tokyo Metropolitan Research Institute for Environmental Protection, Tokyo, Japan
  • Kato Kiyoko
    Department of Obstetrics and Gynaecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
  • Nitta Hiroshi
    Health and Environmental Risk Division, National Institute for Environmental Studies, Ibaraki, Japan
  • Nishiwaki Yuji
    Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo, Japan

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説明

<p>Introduction: PM2.5 exposure is a suspected risk factor for diabetes. It is hypothesized that maternal PM2.5 exposure contributes to the development of gestational diabetes mellitus (GDM). The association between PM2.5 exposure and GDM is controversial and limited evidence is available for the exposure to PM2.5 chemical components. We investigated the association between maternal exposure to total PM2.5 mass and its components, particularly over the first trimester (early placentation period), and GDM.</p><p>Methods: Data were obtained from the Japan Perinatal Registry Network database, which includes all live births and stillbirths after 22 weeks of gestation at 39 cooperating hospitals in 23 Tokyo wards (2013-2015). At one fixed monitoring site, we performed daily filter sampling of fine particles and measured daily concentrations of carbon and ion components. The average concentrations of total PM2.5 and its components over the 3 months before pregnancy and the first (0-13 gestational weeks) and second (14-27 gestational weeks) trimesters were calculated and assigned to each woman. We estimated the odds ratios (ORs) of GDM in a multilevel logistic regression model.</p><p>Results: Among 82,773 women (mean age at delivery = 33.7 years) who delivered singleton births, 3,953 (4.8%) had GDM. In the multiexposure period model, an association between total PM2.5 exposure and GDM was observed for exposure over the first trimester (OR per interquartile range (IQR = 3.63 μg/m3) increase = 1.09; 95% confidence interval (CI) = 1.02-1.16), but not for the 3 months before pregnancy or the second trimester. For PM2.5 components, only organic carbon exposure over the first trimester was positively associated with GDM (OR per IQR (0.51 μg/m3) increase = 1.10; 1.00-1.21).</p><p>Conclusions: This is the first evidence that exposure to total PM2.5 and one of its components, organic carbon, over the first trimester increases GDM occurrence in Japan.</p>

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  • JMA Journal

    JMA Journal 5 (4), 480-490, 2022-10-17

    公益社団法人 日本医師会 / 日本医学会

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