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Abstract Title:

Exposure to phthalates and bisphenol A are associated with atopic dermatitis symptoms in children: a time-series analysis.

Abstract Source:

Environ Health. 2017 Mar 9 ;16(1):24. Epub 2017 Mar 9. PMID: 28274229

Abstract Author(s):

Eun-Hye Kim, Byoung-Hak Jeon, Jihyun Kim, Young-Min Kim, Youngshin Han, Kangmo Ahn, Hae-Kwan Cheong

Article Affiliation:

Eun-Hye Kim

Abstract:

BACKGROUND: Despite increasing evidence on the relationship between exposure to phthalates and bisphenol A with allergies and asthma, reports on atopic dermatitis (AD) with these chemicals are few. We assessed the association between AD symptoms and the exposure to phthalates and bisphenol A and in children.

METHODS: We surveyed 18 boys with AD (age 3-7 years) in a day care center in Seoul between May 2009 and April 2010. AD symptoms were recorded by using a daily symptom diary. We collected 460 series of pooled urine twice a day, in the morning and afternoon, over 230 working days and measured the concentrations of mono-2-ethyl-5-oxohexyl phthalate (5-oxo-MEHP), mono-2-ethyl-5-hydroxyhexyl phthalate (5-OH-MEHP), mono-isobutyl phthalate (MnBP) and bisphenol A glucuronide (BPAG) in the pooled urine. Logistic regression was used for statistical analysis.

RESULTS: Most phthalate metabolite levels were higher in the morning than in the afternoon (p < 0.0001). There was seasonal variation in the levels of phthalates and bisphenol A metabolites. Levels of 5-OH-MEHP, MnBP, and BPAG were highest in summer (p < 0.0001). Manifestation of AD symptoms was associated with an increase in urinary levels of MnBP (adjusted odds ratio, aOR = 2.85, 95% CI: 1.12-7.26 per 1 μg/L of MnBP) and BPAG (aOR = 1.79, 95% CI: 0.91-3.52 per 1 μg/L BPAG) on the same day. The levels of MnBP and BPAG in the previousday increased AD symptoms (aOR = 2.74, 95% CI: 1.21-6.20, for 1 μg/L of MnBP and aOR = 2.01, 95% CI: 1.08-3.74 for 1 μg/L BPAG).

CONCLUSION: Our results suggest that exposure to phthalates and bisphenol A is associated with aggravation of AD symptoms in children.

Study Type : Human Study

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Sayer Ji
Founder of GreenMedInfo.com

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