RT Journal Article T1 Mass spectrometry based analytical approaches and pitfalls for toxicometabolomics of arsenic in mammals: A tutorial review A1 García Barrera, Tamara A1 Rodríguez Moro, Gema A1 Callejón Leblic, María Belén A1 Arias Borrego, Ana A1 Gómez Ariza, José Luis AB The present review focus on the analytical platforms and the workflow for toxicometabolomics with aspecial emphasis on their strengths and pitfalls presenting as a case study the toxicometabolomics ofarsenic in mammals.Although powerful analytical methods and techniques are currently available for metabolomics, themain “bottleneck” is still the absence of unified protocols for sample preparation (e.g. quenching, solventsused) as well as several important factors in toxicometabolomics, which drastically affect themetabolism (e.g. selection of model organisms, xenobiotic doses, chemical form of the xenobiotic,exposure route, biological sample). In this context, the applicability to complex samples, higher sensitivity,specificity and the possibility to perform quantitative analysis offered by MS is crucial to probexenobiotic induced metabolic changes to evaluate the stress responses.Nowadays, the use of different metabolomic platforms allowed determining important changes in themetabolism induced by arsenic in mammals such as alterations in the energy (e.g. Glycolysis, Kreb'scycle), amino acid, lipid, nucleotide and androgen metabolisms. PB Elsevier SN 0003-2670 YR 2017 FD 2017 LK https://hdl.handle.net/10272/22966 UL https://hdl.handle.net/10272/22966 LA eng NO García-Barrera, T., Rodríguez-Moro, G., Callejón-Leblic, B., Arias-Borrego, A., & Gómez-Ariza, J. L. (2018). Mass spectrometry based analytical approaches and pitfalls for toxicometabolomics of arsenic in mammals: A tutorial review. In Analytica Chimica Acta (Vol. 1000, pp. 41–66). Elsevier BV. https://doi.org/10.1016/j.aca.2017.10.019 NO This work was supported by the projects CTM2012-38720-C03-01 and CTM2015-67902-C-1-P from the Spanish Ministry of Economy and Competitiveness, and P12-FQM-0442 from the Regional Ministry of Economy, Innovation, Science and Employment (Andalusian Government, Spain). Gema Rodríguez Moro thanks the Spanish Ministry of Economy and Competitiveness and Belén Callejón Leblic thanks the Ministry of Education, Culture and Sport for predoctoral scholarships. DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026