2018年1月
Prenatal exposure to dioxin-like compounds is associated with decreased cord blood IgE and increased risk of wheezing in children aged up to 7 years: The Hokkaido study
SCIENCE OF THE TOTAL ENVIRONMENT
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- 巻
- 610
- 号
- 開始ページ
- 191
- 終了ページ
- 199
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.scitotenv.2017.07.248
- 出版者・発行元
- ELSEVIER SCIENCE BV
Introduction: In utero exposure to dioxin-like compounds (DLCs) may cause imbalance of immune development in early infancy. However, there are few epidemiological studies into the effects of in utero exposure to DLCs on allergies and infections during childhood. This study evaluates associations between concentrations of maternal DLCs and cord blood immunoglobulin (Ig) E, as well as allergies and infections during childhood.
Method: We recruited 514 pregnant women in a maternity hospital in Sapporo, Japan, and measured concentrations of DLCs in 426 maternal blood samples using high-resolution gas chromatography/high-resolution mass spectrometry. We examined the relationship between concentrations of maternal DLCs and cord blood IgE at birth (n = 239), as well as for allergies and infections in children at 3.5 (n = 327) and 7 (n = 264) years, using regression analysis adjusted for confounding variables.
Results: We found a positive association between maternal DLC concentrations and frequency of wheezing in children aged up to 7 years [odds ratio (OR); 7.81 (95% confidence interval (CI), 1.42 to 42.9)]. At 3.5 years, boys showed inverse associations between maternal DLC concentrations and cord blood IgE [partial regression coefficient; -0.87 (95% CI), -1.68 to -0.06], and frequency of wheezing [OR; 0.03 (95% CI), 0.00 to 0.94] but girls did not.
Discussion: As one reason for the significant association observed at 7 but absent at 3.5 years, we suggest that allergic symptoms are more obvious in older children due to matured immune function.
Conclusion: The findings suggest that prenatal exposure to DLCs may modify offspring immune responses and result in increased risk of allergy among children of school age. (C) 2017 Elsevier B.V. All rights reserved.
Method: We recruited 514 pregnant women in a maternity hospital in Sapporo, Japan, and measured concentrations of DLCs in 426 maternal blood samples using high-resolution gas chromatography/high-resolution mass spectrometry. We examined the relationship between concentrations of maternal DLCs and cord blood IgE at birth (n = 239), as well as for allergies and infections in children at 3.5 (n = 327) and 7 (n = 264) years, using regression analysis adjusted for confounding variables.
Results: We found a positive association between maternal DLC concentrations and frequency of wheezing in children aged up to 7 years [odds ratio (OR); 7.81 (95% confidence interval (CI), 1.42 to 42.9)]. At 3.5 years, boys showed inverse associations between maternal DLC concentrations and cord blood IgE [partial regression coefficient; -0.87 (95% CI), -1.68 to -0.06], and frequency of wheezing [OR; 0.03 (95% CI), 0.00 to 0.94] but girls did not.
Discussion: As one reason for the significant association observed at 7 but absent at 3.5 years, we suggest that allergic symptoms are more obvious in older children due to matured immune function.
Conclusion: The findings suggest that prenatal exposure to DLCs may modify offspring immune responses and result in increased risk of allergy among children of school age. (C) 2017 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.scitotenv.2017.07.248
- ISSN : 0048-9697
- eISSN : 1879-1026
- PubMed ID : 28803196
- Web of Science ID : WOS:000411897700021