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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

A column switching ultrahigh-performance liquid chromatography-tandem mass spectrometry method to determine anandamide and 2-arachidonoylglycerol in plasma samples

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Autor(es):
Marchioni, Camila ; Donizeti de Souza, Israel ; Fernandes Grecco, Caroline ; Alexandre Crippa, Jose ; Tumas, Vitor ; Eugenia Costa Queiroz, Maria
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: ANALYTICAL AND BIOANALYTICAL CHEMISTRY; v. 409, n. 14, p. 3587-3596, MAY 2017.
Citações Web of Science: 8
Resumo

This study reports a fast, sensitive, and selective column switching ultrahigh-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method to determine the endocannabinoids (eCBs), anandamide (AEA), and 2-arachidonoylglycerol (2-AG) in plasma samples. This bidimensional system used a restricted access media column (RP-8 ADS, 25 mm x 4 mm x 25 mu M) in the first dimension and a core-shell Kinetex C18 (100 mm x 2, 1.7 mm x 1 mu M) column in the second dimension, followed by detection in a mass spectrometer triple quadrupole (multiple reactions monitoring mode) operating in the positive mode. RP-8 ADS was used for trace enrichment of eCBs (reverse phase partitioning) and macromolecular matrix size exclusion; the core-shell column was used for the chromatographic separation. The column switching UHPLC-MS/MS method presented a linear range spanning from 0.1 ng mL(-1) (LOQ) to 6 ng mL(-1) for AEA and from 0.04 ng mL(-1) (LOQ) to 10 ng mL(-1) for 2-AG. Excluding the LLOQ values, the precision assays provided coefficients of variation lower than 8% and accuracy with relative standard error values lower than 14%. Neither carryover nor matrix effects were detected. This high-throughput column switching method compared to conventional methods is time saving as it involves fewer steps, consumes less solvent, and presents lower LLOQ. The column switching UHPLC-MS/MS method was successfully applied to determine AEA and 2-AG in plasma samples obtained from Alzheimer's disease patients. (AU)

Processo FAPESP: 15/07619-1 - Cromatografia líquida acoplada à espectrometria de massas em tandem no modo column switching para análises de endocanabinóides e de fármacos em amostras biológicas
Beneficiário:Maria Eugênia Queiroz Nassur
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 16/13639-8 - Cromatografia líquida de ultra eficiência acoplada à espectrometria de massas em Tandem no modo column switching para a determinação de endocanabinoides e canabinoides em amostras biológicas de pacientes com a Doença de Parkinson
Beneficiário:Camila Marchioni
Linha de fomento: Bolsas no Brasil - Doutorado Direto