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Next-generation biomonitoring of the early-life chemical exposome in neonatal and infant development
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Next-generation biomonitoring of the early-life chemical exposome in neonatal and infant development
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Next-generation biomonitoring of the early-life chemical exposome in neonatal and infant development
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Journal Article
Next-generation biomonitoring of the early-life chemical exposome in neonatal and infant development
2022
Overview
Exposure to synthetic and natural chemicals is a major environmental risk factor in the etiology of many chronic diseases. Investigating complex co-exposures is necessary for a holistic assessment in exposome-wide association studies. In this work, a sensitive liquid chromatography-tandem mass spectrometry approach was developed and validated. The assay enables the analysis of more than 80 highly-diverse xenobiotics in urine, serum/plasma, and breast milk; with detection limits generally in the pg-ng mL
−1
range. In plasma of extremely-premature infants, 27 xenobiotics are identified; including contamination with plasticizers, perfluorinated alkylated substances and parabens. In breast milk samples collected longitudinally over the first 211 days post-partum, 29 analytes are detected, including pyrrolizidine- and tropane alkaloids which have not been identified in this matrix before. A preliminary estimation of daily toxicant intake via breast milk is conducted. In conclusion, we observe significant early-life co-exposure to multiple toxicants, and demonstrate the method’s applicability for large-scale exposomics-type cohort studies.
Exposure to synthetic and natural toxicants is a major risk factor in the etiology of disease. Here, authors describe the development of a method to quantify >80 xenobiotics and apply it to assess early-life exposure in vulnerable infants.
