Simultaneous quantitation of meperidine, normeperidine, tramadol, propoxyphene and norpropoxyphene in human plasma using solid-phase extraction and gas chromatography/mass spectrometry: Method validation and application to cardiovascular safety of therapeutic doses
| Autor: | Guillermo Alberto Keller, Roberto A. Diez, Nicolás Fernández, Nancy Mónica Olivera, Patricia N. Quiroga, Guillermo Di Girolamo |
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| Rok vydání: | 2017 |
| Předmět: |
Analyte
Meperidine Propoxyphene Mass spectrometry 030226 pharmacology & pharmacy 01 natural sciences Gas Chromatography-Mass Spectrometry Analytical Chemistry 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine medicine Humans Solid phase extraction Derivatization Tramadol Spectroscopy Dextropropoxyphene Chromatography Norpropoxyphene Solid Phase Extraction 010401 analytical chemistry Organic Chemistry Heart 0104 chemical sciences Analgesics Opioid chemistry Gas chromatography Drug Monitoring Gas chromatography–mass spectrometry medicine.drug |
| Zdroj: | Rapid communications in mass spectrometry : RCM. 31(23) |
| ISSN: | 1097-0231 |
| Popis: | RATIONALE Several opioid analgesics have been related to the prolongation of cardiac repolarization, a condition which can be fatal. In order to establish a correct estimation of the risk/benefit balance of therapeutic doses of meperidine, normeperidine, tramadol, propoxyphene and norpropoxyphene, it was necessary to develop an analytical method to determinate plasma concentrations of these opioids. METHODS Here we describe a method which incorporates strong alkaline treatment to obtain norpropoxyphene amide followed by a one-elution step solid-phase extraction, and without further derivatization. Separation and quantification were achieved by gas chromatography/electron ionization mass spectrometry (GC/EI-MS) in selected-ion monitoring mode. Quantification was performed with 500 μL of plasma by the addition of deuterated analogues as internal standards. RESULTS The proposed method has been validated in the linearity range of 25-1000 ng/mL for all the analytes, with correlation coefficients higher than 0.990. The lower limit of quantification was 25 ng/mL. The intra- and inter-day precision, calculated in terms of relative standard deviation, were 2.0-12.0% and 6.0-15.0%, respectively. The accuracy, in terms of relative error, was within a ± 10% interval. The absolute recovery and extraction efficiency ranged from 81.0 to 111.0% and 81.0 to 105.0%, respectively. CONCLUSIONS A GC/MS method for the rapid and simultaneous determination of meperidine, normeperidine, tramadol, propoxyphene and norpropoxyphene in human plasma was developed, optimized and validated. This procedure was shown to be sensitive and specific using small specimen amounts, suitable for application in routine analysis for forensic purposes and therapeutic monitoring. To our knowledge, this is the first full validation of the simultaneous determination of these opioids and their metabolites in plasma samples. |
| Databáze: | OpenAIRE |
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