Phthalate monoesters in association with uterine leiomyomata in Shanghai

Jing Sun, Meiru Zhang, Liqian Zhang, Dong Zhao, Shuguang Li, Bo Chen
In: International Journal of Environmental Health Research · 2015 · vol. 26(3) , pp. 306–316 · doi:10.1080/09603123.2015.1111310 · PMID:26608625 · W2230113124
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Abstract

Phthalates are ubiquitous environmental pollutants because of the broad use of plastics. We conducted a case-control study to determine whether uterine leiomyomata were related to exposure to phthalates. Urine specimens and questionnaires were collected from 61 cases and 61 age-matched controls. Nine phthalate monoesters were determined by ultra performance liquid chromatography coupled with tandem mass spectroscopy. Cases had significantly higher levels of creatinine-adjusted mono-iso-butyl phthalate (MiBP), mono-n-butyl phthalate (MnBP), mono-2-ethylhexyl phthalate (MEHP), mono-2-ethyl-5-oxohexyl phthalate, mono-2-ethyl-5-hydroxyhexyl phthalate (MEHHP), mono(2-ethyl-5-carboxypentyl) phthalate (MECPP), total di(2-ethylhexyl) phthalate metabolites (∑DEHPmet), and total dibutyl phthalate metabolites (∑DBP(met)) than controls. After adjusting for potential confounders, logistic regression analyses demonstrated that leiomyomata were positively associated with MiBP, MnBP, MEHP, MEHHP, MECPP, ∑DEHP(met), and ∑DBP(met). In summary, our data support the hypothesis that uterine leiomyomata are related to phthalate exposure.

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