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oai:repisalud.isciii.es:20.500.12105/201462024-10-03T06:46:05Zcom_20.500.12105_15322com_20.500.12105_2051col_20.500.12105_16967col_20.500.12105_16983

00925njm 22002777a 4500 dc Valvi, Damaskini author Casas, Maribel author Romaguera, Dora author Monfort, Nuria author Ventura, Rosa author Martinez, David author Sunyer, Jordi author Vrijheid, Martine author 2015-10 BACKGROUND: Human evidence on the effects of early life phthalate exposure on obesity and cardiovascular disease risks, reported by experimental studies, is limited to a few cross-sectional studies. OBJECTIVES: We evaluated the associations between prenatal phthalate exposure and childhood growth and blood pressure in a Spanish birth cohort study. METHODS: We assessed exposure using the average of two phthalate metabolite spot-urine concentrations collected from the mothers in the first and third pregnancy trimesters (creatinine-adjusted, n = 391). Study outcomes were the difference in age-and sex-specific z-scores for weight between birth and 6 months of age; and repeated age-and sex-specific z-scores for body mass index (BMI) at 1, 4, and 7 years; waist-to-height ratio at 4 and 7 years; and age-and height-specific z-scores for systolic and diastolic blood pressure at 4 and 7 years. RESULTS: The sum of five high-molecular-weight phthalate metabolites (Sigma HMWPm) was associated with lower weight z-score difference between birth and 6 months (beta per doubling of exposure = -0.41; 95% CI: -0.75, -0.06) and BMI z-scores at later ages in boys (beta = -0.28; 95% CI: -0.60, 0.03) and with higher weight z-score difference (beta = 0.24; 95% CI: -0.16, 0.65) and BMI z-scores in girls (beta = 0.30; 95% CI: -0.04, 0.64) (p for sex interaction = 0.01 and 0.05, respectively). The sum of three low-molecular-weight phthalates (Sigma LMWPm) was not significantly associated with any of the growth outcomes. Sigma HMWPm and Sigma LMWPm were associated with lower systolic blood pressure z-scores in girls but not in boys. CONCLUSIONS: This study suggests that prenatal phthalate exposure may be associated with postnatal growth and blood pressure in a sex-specific manner. Inconsistencies with previous cross-sectional findings highlight the necessity for evaluating phthalate health effects in prospective studies. Valvi D, Casas M, Romaguera D, Monfort N, Ventura R, Martinez D, et al. Prenatal Phthalate Exposure and Childhood Growth and Blood Pressure: Evidence from the Spanish INMA-Sabadell Birth Cohort Study. Environ Health Perspect. 2015 Oct;123(10):1022-9. Epub 2015 Apr 7. 10.1289/ehp.1408887 1552-9924 0091-6765 Environmental Health Perspectives http://hdl.handle.net/20.500.13003/10682 25850106 L606301160 2-s2.0-84930638624 http://hdl.handle.net/20.500.12105/20146 366698200024 Prenatal Phthalate Exposure and Childhood Growth and Blood Pressure: Evidence from the Spanish INMA-Sabadell Birth Cohort Study