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Phthalate exposure and subfecundity in preconception couples: A nested case-control study
Ecotoxicology and Environmental Safety ( IF 6.8 ) Pub Date : 2024-05-08 , DOI: 10.1016/j.ecoenv.2024.116428 Anxin Yin , Lisha Mao , Congcong Zhang , Bingcheng Du , Xu Xiong , An Chen , Lu Cheng , Zhichun Zhang , Xingying Li , Ying Zhou , Hong Jiang
Ecotoxicology and Environmental Safety ( IF 6.8 ) Pub Date : 2024-05-08 , DOI: 10.1016/j.ecoenv.2024.116428 Anxin Yin , Lisha Mao , Congcong Zhang , Bingcheng Du , Xu Xiong , An Chen , Lu Cheng , Zhichun Zhang , Xingying Li , Ying Zhou , Hong Jiang
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Phthalates (PAEs) are endocrine-disrupting chemicals ubiquitously found in the environment. This study aimed to examine the association between exposure of PAEs and subfecundity in preconception couples. This is a nested case-control study based on preconception cohort. Preconception couples with intention to conceive were enrolled and followed up until a clinically confirmed pregnancy or 12 menstrual cycles of preparation for conception. A total of 107 couples with subfecundity- time to pregnancy (TTP) more than 12 menstrual cycles, and 144 couples ≤12 cycles were included in the analysis. The levels of PAE metabolites in one spot urine samples were detected and compared between the groups. The weighted quantile sum (WQS) regression model and Bayesian kernel machine regression (BKMR) model were used to examine the joint effects of couples’ exposure to PAEs on subfecundity. Using the multivariate binary logistic regression model, compared to the lowest quartile of urinary ∑PAEs concentration group, both preconception females (aOR=2.42, 95% CI: 1.10–5.30, =0.027) and males (aOR=2.99, 95% CI: 1.36–6.58, =0.006) in the highest quartile group had an increased risk of subfecundity, and a dose-response relationship was observed between PAEs and the risk of subfecundity. The WQS analyses found that co-exposure to PAE mixture was a risk factor for subfecundity in preconception female (aOR=1.76, 95% CI: 1.38–2.26, <0.001), male (aOR=1.58, 95% CI: 1.20–2.08, =0.001), and couple (aOR=2.39, 95% CI: 1.61–3.52, <0.001). The BKMR model found a positive combined effect of mixed exposure to PAEs on the risk of subfecundity. PAEs increase the risk of subfecundity in preconception couples. Our research reinforced the need of monitoring PAE exposure for the purpose of improving human reproductive health.
更新日期：2024-05-08
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