Levels of Urinary Metabolites of Organophosphate Flame Retardants, TDCIPP, and TPHP, in Pregnant Women in Shanghai.
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Flame retardants are widely used in consumer products to reduce their flammability. Previously used flame retardants have been sequentially banned due to their environmental and human toxicity. Currently, tris(1,3-dichloropropyl) phosphate (TDCIPP) and triphenyl phosphate (TPHP) are among the most commonly used flame retardants. TDCIPP and TPHP are reproductive toxins and have carcinogenic, neurotoxic, and endocrine-disrupting properties. Although high levels of TDCIPP and TPHP have been found in drinking water, seawater, and office air in China, data regarding human exposure are lacking. In this study, we assessed the level of urinary TPHP and TDCIPP metabolites (DPHP and BDCIPP, resp.) in a cohort of pregnant women (N = 23) from Shanghai, China, using liquid chromatography-tandem mass spectrometry. DPHP were detected in 100% urine samples, while only four urine samples had detectable level of BDCIPP in this cohort (17% detected). Geometric means of DPHP and BDCIPP concentrations were 1.1 ng/mL (interquartile range [IQR]: 0.6, 1.5 ng/mL) and 1.2 ng/mL (IQR: 0.6, 2.2 ng/mL), respectively. In this small cohort, urinary DPHP and BDCIPP levels were not significantly correlated with miscarriages, neonatal birthweight, gestational diabetes, or maternal age. These data suggest that exposure to TPHP is widespread, and they demonstrate the feasibility of using urinary biomarkers to measure exposures to modern flame-retardant chemicals.
Published Version (Please cite this version)10.1155/2016/9416054
Publication InfoFeng, L; Li, Y-J; Liu, L; Murtha, Amy; Ouyang, F; Shen, H; ... Zhang, JJ (2016). Levels of Urinary Metabolites of Organophosphate Flame Retardants, TDCIPP, and TPHP, in Pregnant Women in Shanghai. J Environ Public Health, 2016. pp. 9416054. 10.1155/2016/9416054. Retrieved from http://hdl.handle.net/10161/16014.
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Professor of Obstetrics and Gynecology
Dr. Amy Murtha is a Professor in the Department of Obstetrics and Gynecology and Department of Pediatrics, and past Vice Chair for Research in Obstetrics and Gynecology. After graduating from the Medical College of Pennsylvania in 1992 she completed her residency in OB-GYN and fellowship in Maternal Fetal Medicine (MFM) at Duke University then joined the faculty at Duke in 1998. Dr. Murtha served as interim Chair for the Department of OB-GYN and Fellowship Director for the mater