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. 2020 Jul:251:126340.
doi: 10.1016/j.chemosphere.2020.126340. Epub 2020 Feb 27.

Urinary bisphenol A concentrations and adiposity measures at age 7 years in a prospective birth cohort

Jianqiu Guo  1 , Jiming Zhang  1 , Chunhua Wu  1 , Hongxi Xiao  1 , Shenliang Lv  1 , Dasheng Lu  2 , Xiaojuan Qi  3 , Chao Feng  2 , Weijiu Liang  4 , Xiuli Chang  1 , Yubin Zhang  1 , Hao Xu  4 , Yang Cao  5 , Guoquan Wang  2 , Zhijun Zhou  6
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Urinary bisphenol A concentrations and adiposity measures at age 7 years in a prospective birth cohort

Jianqiu Guo et al. Chemosphere. 2020 Jul.

Abstract

Bisphenol A (BPA) exposure during early life may increase risk of childhood obesity, however, prospective evidence of birth cohort is limited and inconclusive. We aimed to explore the associations of maternal and childhood BPA exposure with child adiposity measures, including body mass index, waist circumference and skinfold thickness and waist to height ratio of children at 7 years. 430 mother-child pairs were examined from a population-based prospective cohort in a rural area of East China. BPA concentrations of spot urine samples were quantified in mothers and their children aged 3 and 7 years. Maternal urinary BPA concentration was significantly positively associated with waist circumference in children aged 7 years (β = 0.508 cm, 95% CI: 0.067, 0.950). These significant associations were not modified by child sex, but they were only observed among girls in sex-stratified analyses. Risk of central obesity related to prenatal BPA exposure was significantly higher in the second and the third tertile than those in the first tertile (odds ratio, OR = 2.510, 95% CI = 1.146, 5.499; OR = 2.584, 95% CI = 1.186, 5.631, respectively; p for trend = 0.022). The present findings suggested that prenatal exposure to BPA may enhance waist circumference of children and thereby increase risk of central obesity in school-age girls.

Keywords: Adiposity measures; Bisphenol A; Central obesity; School-age children; Waist circumference.

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Conflict of interest statement

Declaration of competing interest The authors declare no competing financial interest.

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