Association between phthalate metabolite mixture in neonatal cord serum and birth outcomes

邻苯二甲酸盐 出生体重 代谢物 混淆 医学 内分泌学 脐带 胎龄 后代 内科学 怀孕 生理学 化学 生物 免疫学 遗传学 有机化学
作者
Xiaozhen Zhang,Caihong Xu,Y. Li,Zhongkai Chen,Fei Xu,Haoyu Zhang,Lei Ding,Yongfeng Lin,Nan Zhao
出处
期刊:Science of The Total Environment [Elsevier]
卷期号:919: 170614-170614 被引量:1
标识
DOI:10.1016/j.scitotenv.2024.170614
摘要

Prenatal exposure to phthalates (PAEs) is ubiquitous among Chinese neonates. PAEs entering the body will be transformed to various hydrolyzed and oxidated PAE metabolites (mPAEs). PAEs and mPAEs exposure may lead to adverse birth outcomes through disruption of multiple hormone signaling pathways, induction of oxidative stress, and alterations in intracellular signaling processes. In this study, the concentrations of 11 mPAEs in 318 umbilical cord serum samples from neonates in Jinan were quantified with HPLC-ESI-MS. Multiple linear regression, Bayesian kernel machine regression, and quantile g-computation models were utilized to investigate the effects of both individual mPAE and mPAE mixture on birth outcomes. Stratified analysis was performed to explore whether these effects were gender-specific. mPAE mixture was negatively associated with birth length (BL) z-score, birth weight (BW) z-score, head circumference (HC) z-score, and ponderal index (PI). Mono(2-ethylhexyl) phthalate (MEHP) manifested negative associations with BL(z-score), BW(z-score), HC(z-score), and PI, whereas mono(2-carboxymethylhexyl) phthalate (MCMHP) was negatively associated with BW(z-score) and PI within the mPAE mixture. Stratified analysis revealed that the negative associations between mPAE mixture and four birth outcomes were attenuated in female infants, while the positive impact of mono(2-ethyl-5carboxypentyl) phthalate (MECPP) on BL(z-score) and BW(z-score) could be detected only in females. In summary, our findings suggest that prenatal exposure to phthalates may be associated with intrauterine growth restriction, and these effects vary according to the gender of the infant.
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