Associations of trimester-specific exposure to bisphenols with size at birth: A Chinese prenatal cohort study

Jie Hu, Hongzhi Zhao, Joseph M. Braun, Tongzhang Zheng, Bin Zhang, Wei Xia, Wenxin Zhang, Jiufeng Li, Yanqiu Zhou, Han Li, Jun Li, Aifen Zhou, Yiming Zhang, Stephen L. Buka, Simin Liu, Yang Peng, Chuansha Wu, Minmin Jiang, Wenqian Huo, Yingshuang ZhuKunchong Shi, Yuanyuan Li, Zongwei CAI*, Shunqing Xu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Background: Bisphenol A (BPA) is an endocrine disruptor that affects fetal growth in experimental studies. Bisphenol F (BPF) and bisphenol S (BPS), which have been substituted for BPA in some consumer products, have also shown endocrine-disrupting effects in experimental models. However, the effects of BPF and BPS on fetal growth in humans are unknown. Objectives: Our goal was to investigate trimester-specific associations of urinary concentrations of BPA, BPF, and BPS with size at birth. Methods: The present study included 845 pregnant women from Wuhan, China (2013-2015), who provided one urine sample in each of the first, second, and third trimesters. Linear regressions with generalized estimating equations were applied to estimate trimester-specific associations of urinary bisphenol concentrations with birth weight, birth length, and ponderal index. Linear mixed-effects models were used to identify potential critical windows of susceptibility to bisphenols by comparing the exposure patterns of newborns in the 10th percentile of each birth anthropometric measurement to that of those in the 90th percentile. Results: Medians (25th-75th percentiles) of urinary concentrations of BPA, BPF, and BPS were 1.40 (0.19-3.85), 0.65 (0.34-1.39), and 0.38 (0.131.11) ng/mL, respectively. Urinary BPA concentrations in different trimesters were inversely, but not significantly, associated with birth weight and ponderal index. Urinary concentrations of BPF and BPS during some trimesters were associated with significantly lower birth weight, birth length, or ponderal index, with significant trend p-values (ptrend < 0.05) across quartiles of BPF and BPS concentrations. The observed associations were unchanged after additionally adjusting for other bisphenols. In addition, newborns in the 10th percentile of each birth anthropometry measure had higher BPF and BPS exposures during pregnancy than newborns in the 90th percentile of each outcome. Conclusions: Prenatal exposure to BPF and BPS was inversely associated with size at birth in this cohort. Replication in other populations is needed.

Original languageEnglish
Article number107001
JournalEnvironmental Health Perspectives
Volume127
Issue number10
DOIs
Publication statusPublished - Oct 2019

Scopus Subject Areas

  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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