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• W2015997966 endingPage "1644" @default.
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• W2015997966 abstract "Organic and inorganic mass spectrometries were used to investigate the biochemical response of mice (Mus musculus) to inorganic arsenic exposure using liver as the target organ. The toxicological effects of trivalent inorganic arsenic after oral administration (3 mg kg−1 body weight and per day) were investigated over a period of 7 days using metallomics, metabonomics and redox proteomics approaches. Size-exclusion chromatography (SEC) with ICP-MS detection was combined with anion exchange chromatography (AEC) to characterize the biological response of the exposed mice. On the other hand, direct infusion mass spectrometry (DI-ESI-QTOF-MS) of polar and lipophilic extracts using positive and negative modes of acquisition (ESI+/ESI−) provided information about time-dependent changes in endogenous metabolites identified by Partial Least Square-Discriminant Analysis (PLS-DA). Finally, the study has been complemented with the evaluation of up/down-regulation of enzymes related to oxidative stress such as superoxide dismutase (SOD), glutathione reductase (GR), catalase (CAT) and peroxidases in connection with metal toxicity issues. The results show that the inorganic arsenic methylation in the liver may reach the saturation point upon chronic exposure to the element. On the other hand, SEC-ICP-MS coupling provided information about metal containing-proteins and metabolites related to arsenic exposure (metallomics) which has been correlated with the changes in the global metabolism (metabonomics), also considering their consequences on the redox status of protein and protein expression (redox proteomics). Our study shows that arsenic causes biochemical pathway alterations, such as energy metabolism (e.g. glycolysis, Krebs cycle), amino acid metabolism, choline metabolism and degradation of membrane phospholipids (apoptosis). This work illustrates the high reliability of the integrated use of organic mass spectrometry for the metabonomic study of biochemical effects induced by As2O3, with inorganic mass spectrometry for metallomic and speciation assessment of arsenic biomethylation in the liver of exposed mice, and redox proteomics to evaluate inhibition of enzymatic activity in different proteins such as superoxide dismutase (SOD), catalase (CAT) and glutathione reductase (GR) caused by this element. In conclusion, the integration of metallomics, metabolomics and redox proteomics results provides a more comprehensive evaluation about the biological response in experiments dealing with exposure to toxic metals." @default.
• W2015997966 created "2016-06-24" @default.
• W2015997966 creator A5018738940 @default.
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• W2015997966 creator A5028425742 @default.
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• W2015997966 date "2013-01-01" @default.
• W2015997966 modified "2023-09-24" @default.
• W2015997966 title "Analysis of the biological response of mouse liver (Mus musculus) exposed to As2O3 based on integrated -omics approaches" @default.
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• W2015997966 doi "https://doi.org/10.1039/c3mt00186e" @default.
• W2015997966 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24091382" @default.
• W2015997966 hasPublicationYear "2013" @default.
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