Associations Between Phthalate, Eosinophil, and Aeroallergen Sensitization in Schoolchildren

Overview

Journal J Korean Med Sci

Specialty General Medicine

Date 2023 Nov 21

PMID 37987110

Authors

Jeongsik Yi

Ho-Sang Shin

Man Yong Han

Hee Jin Choi

Mi Seon Lee

Myongsoon Sung

Affiliations

Soon will be listed here.

Abstract

Background: Phthalates and bisphenol A (BPA) are endocrine-disrupting chemicals and may cause immunological disorders in children. Therefore, according to the region, we investigated urinary phthalates and BPA levels and the relationship between urinary phthalate, aeroallergen sensitization, and eosinophil count during the coronavirus disease 2019 pandemic.

Methods: In total, 203 schoolchildren (134 residential and 69 industrial) aged 7-10 years were enrolled between July 2021 and July 2022. The BPA, metabolites of four high-molecular-weight phthalates (Σ4HMWP) and three low-molecular-weight phthalates (Σ3LMWP), were measured in the urine samples. Total eosinophil count and transepidermal water loss (TEWL) were also measured along with the skin prick test.

Results: The two groups had no differences in terms of BPA. The industrial group had significantly more plastic container usage, and there was a difference in the Σ3LMWP ( < 0.001) between the two groups but no difference in the Σ4HMWP ( = 0.234). The quartiles of urinary Σ4HMWP and Σ3LMWP ( < were not associated with the total eosinophil count, vitamin D level, or TEWL. After adjusting for cofactors, the quartiles of urinary Σ4HMWP and Σ3LMWP were significantly associated with total eosinophil count ( < 0.001) but not with aeroallergen sensitization or vitamin D.

Conclusion: Exposure to phthalates was significantly associated with eosinophil count but not with aeroallergen sensitization or vitamin D. Therefore, reducing the use of plastic containers may effectively prevent exposure to phthalates and reduce Th2 cell-mediated inflammation in children.

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