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Gari, Merce; Moos, Rebecca; Bury, Daniel; Kasper-Sonnenberg, Monika; Jankowska, Agnieszka; Andysz, Aleksandra; Hanke, Wojciech; Nowak, Dennis ORCID logoORCID: https://orcid.org/0000-0001-7871-8686; Böse-O'Reilly, Stephan ORCID logoORCID: https://orcid.org/0000-0003-0204-3103; Koch, Holger M. and Polanska, Kinga (2021): Human-Biomonitoring derived exposure and Daily Intakes of Bisphenol A and their associations with neurodevelopmental outcomes among children of the Polish Mother and Child Cohort Study. In: Environmental Health, Vol. 20, No. 1, 95

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Background Bisphenol A (BPA) is an industrial chemical mostly used in the manufacture of plastics, resins and thermal paper. Several studies have reported adverse health effects with BPA exposures, namely metabolic disorders and altered neurodevelopment in children, among others. The aim of this study was to explore BPA exposure, its socio-demographic and life-style related determinants, and its association with neurodevelopmental outcomes in early school age children from Poland. Methods A total of 250 urine samples of 7 year-old children from the Polish Mother and Child Cohort Study (REPRO_PL) were analyzed for BPA concentrations using high performance liquid chromatography with online sample clean-up coupled to tandem mass spectrometry (online-SPE-LC-MS/MS). Socio-demographic and lifestyle-related data was collected by questionnaires or additional biomarker measurements. Emotional and behavioral symptoms in children were assessed using mother-reported Strengths and Difficulties Questionnaire (SDQ). Cognitive and psychomotor development was evaluated by Polish adaptation of the Intelligence and Development Scales (IDS) performed by trained psychologists. Results Urinary BPA concentrations and back-calculated daily intakes (medians of 1.8 mu g/l and 46.3 ng/kg bw/day, respectively) were similar to other European studies. Urinary cotinine levels and body mass index, together with maternal educational level and socio-economic status, were the main determinants of BPA levels in Polish children. After adjusting for confounding factors, BPA has been found to be positively associated with emotional symptoms (beta: 0.14, 95% CI: 0.022;0.27). Cognitive and psychomotor development were not found to be related to BPA levels. Conclusions This study represents the first report of BPA levels and their determinants in school age children in Poland. The exposure level was found to be related to child emotional condition, which can have long-term consequences including social functioning and scholastic achievements. Further monitoring of this population in terms of overall chemical exposure is required.

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