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Metabolomic Signatures of Exposure to Nitrate and Trihalomethanes in Drinking Water and Colorectal Cancer Risk in a Spanish Multicentric Study (MCC-Spain)

代谢组学 结直肠癌 化学 混淆 多元分析 环境化学 癌症 医学 内科学 色谱法
作者
José A. Alcolea,Carolina Donat‐Vargas,Anastasia Chrysovalantou Chatziioannou,Pekka Keski‐Rahkonen,Nivonirina Robinot,A. Molina,Pilar Amiano,Inés Gómez‐Acebo,Gemma Castaño‐Vinyals,Léa Maitre,Marc Chadeau‐Hyam,Sonia Dagnino,Sibo Cheng,Augustin Scalbert,Paolo Víneis,Manolis Kogevinas,Cristina M. Villanueva
出处
期刊:Environmental Science & Technology [American Chemical Society]
卷期号:57 (48): 19316-19329 被引量:1
标识
DOI:10.1021/acs.est.3c05814
摘要

We investigated the metabolomic profile associated with exposure to trihalomethanes (THMs) and nitrate in drinking water and with colorectal cancer risk in 296 cases and 295 controls from the Multi Case-Control Spain project. Untargeted metabolomic analysis was conducted in blood samples using ultrahigh-performance liquid chromatography-quadrupole time-of-flight mass spectrometry. A variety of univariate and multivariate association analyses were conducted after data quality control, normalization, and imputation. Linear regression and partial least-squares analyses were conducted for chloroform, brominated THMs, total THMs, and nitrate among controls and for case-control status, together with a N-integration model discriminating colorectal cancer cases from controls through interrogation of correlations between the exposure variables and the metabolomic features. Results revealed a total of 568 metabolomic features associated with at least one water contaminant or colorectal cancer. Annotated metabolites and pathway analysis suggest a number of pathways as potentially involved in the link between exposure to these water contaminants and colorectal cancer, including nicotinamide, cytochrome P-450, and tyrosine metabolism. These findings provide insights into the underlying biological mechanisms and potential biomarkers associated with water contaminant exposure and colorectal cancer risk. Further research in this area is needed to better understand the causal relationship and the public health implications.
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