Prenatal exposure to di-ethyl phthalate (Dep) is related to increasing neonatal ige levels and the altering of the immune polarization of helper-t cells

Chang Ku Tsai, Hsin Hsin Cheng, Te Yao Hsu, Jiu Yao Wang, Chih Hsing Hung, Ching Chang Tsai, Yun Ju Lai, Yu Ju Lin, Hsin Chun Huang, Julie Y.H. Chan, You Lin Tain, Chih Cheng Chen, Ti An Tsai, Hong Ren Yu

研究成果: Article同行評審


Introduction: Phthalates are substances that are added to plastic products to increase their plasticity. These substances are released easily into the environment and can act as endocrine disruptors. Epidemiological studies in children have showed inconsistent findings regarding the relationship between prenatal or postnatal exposure to phthalates and the risk of allergic disease. Our hypothesis is that prenatal exposure to phthalates may contribute to the development of allergies in children. Material and methods: The objective of this study was to determine the associations between urinary phthalate metabolite concentrations in pregnant women, maternal atopic diathesis, maternal lifestyle, and cord blood IgE. Pregnant mothers and paired newborns (n = 101) were enrolled from an antenatal clinic. The epidemiologic data and the clinical information were collected using standard questionnaires and medical records. The maternal blood and urine samples were collected at 24–28 weeks gestation, and cord blood IgE, IL-12p70, IL-4, and IL-10 levels were determined from the newborns at birth. The link between phthalates and maternal IgE was also assessed. To investigate the effects of phthalates on neonatal immunity, cord blood mononuclear cells (MNCs) were used for cytokine induction in another in vitro experiment. Results: We found that maternal urine monoethyl phthalate (MEP) (a metabolite of di-ethyl phthalate (DEP)) concentrations are positively correlated with the cord blood IgE of the corresponding newborns. The cord blood IL-12p70 levels of mothers with higher maternal urine MEP groups (high DEP exposure) were lower than mothers with low DEP exposure. In vitro experiments demonstrated that DEP could enhance IL-4 production of cord blood MNCs rather than adult MNCs. Conclusion: Prenatal DEP exposure is related to neonatal IgE level and alternation of cytokines relevant to Th1/Th2 polarization. This suggests the existence of a link between prenatal exposure to specific plasticizers and the future development of allergies.

期刊International journal of environmental research and public health
出版狀態Published - 2021 六月 2

All Science Journal Classification (ASJC) codes

  • 污染
  • 公共衛生、環境和職業健康
  • 健康、毒理學和誘變


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