Online extraction of antihypertensive drugs and their metabolites from untreated human serum samples using restricted access carbon nanotubes in a column switching liquid chromatography system
| Autor: | Carolina Tosin Bueno, Alexandre C. Pereira, José Eduardo Krieger, E M Krieger, Henrique Dipe de Faria, Paulo Caleb Junior Lima Santos, Eduardo Costa Figueiredo |
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| Rok vydání: | 2017 |
| Předmět: |
Analyte
02 engineering and technology Tandem mass spectrometry Mass spectrometry 01 natural sciences Biochemistry Analytical Chemistry Pharmacokinetics Limit of Detection Tandem Mass Spectrometry Liquid chromatography–mass spectrometry Humans Sample preparation Antihypertensive Agents Chromatography High Pressure Liquid Detection limit Chromatography Nanotubes Carbon Chemistry 010401 analytical chemistry Organic Chemistry Extraction (chemistry) Reproducibility of Results General Medicine 021001 nanoscience & nanotechnology 0104 chemical sciences 0210 nano-technology Blood Chemical Analysis |
| Zdroj: | Journal of Chromatography A. 1528:41-52 |
| ISSN: | 0021-9673 |
| Popis: | A novel analytical method was developed to determine 5 antihypertensive drugs of different pharmacological classes (angiotensin-converting enzyme inhibitors, calcium channel blockers, α-2 adrenergic receptor agonists, angiotensin II receptor blockers, and aldosterone receptor antagonists) and some of their metabolites in human serum. The untreated samples were directly analyzed in a column switching system using an extraction column packed with restricted access carbon nanotubes (RACNTs) in an ultra-high performance liquid chromatography coupled to a mass spectrometer (UHPLC-MS/MS). The RACNTs column was able to exclude approximately 100% of proteins from the samples in 2.0min, maintaining the same performance for about 300 analytical cycles. The method was validated in accordance with Food and Drug Administration (FDA) guidelines, being linear for all the determined analytes in their respective analytical ranges (coefficients of determination higher than 0.99) with limits of detection (LODs) and quantification (LOQs) ranging from 0.09 to 10.85μgL-1 and from 0.30 to 36.17μgL-1, respectively. High recovery values (88-112%) were obtained as well as suitable results for inter and intra-assay accuracy and precision. The method provided an analytical frequency of 5 samples per hour, including the sample preparation and separation/detection steps. The validated method was successfully used to analyze human serum samples of patients undergoing treatment with antihypertensive drugs, being useful for pharmacometabolomic, pharmacogenomic, and pharmacokinetic studies. |
| Databáze: | OpenAIRE |
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