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Electrochemical characterization of repaglinide and its determination in human plasma using liquid chromatography with dual-channel coulometric detection
D. Jirovský, Z. Bartošová, J. Skopalová, V. Maier
Jazyk angličtina Země Nizozemsko
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- elektrochemické techniky metody MeSH
- hypoglykemika krev chemie MeSH
- karbamáty krev chemie MeSH
- kolorimetrie metody MeSH
- koncentrace vodíkových iontů MeSH
- lidé MeSH
- lineární modely MeSH
- piperidiny krev chemie MeSH
- reprodukovatelnost výsledků MeSH
- senzitivita a specificita MeSH
- thiazolidindiony analýza MeSH
- vysokoúčinná kapalinová chromatografie metody MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
A simple, fast and sensitive HPLC method employing dual-channel coulometric detection for the determination of repaglinide in human plasma is presented. The assay involved extraction of repaglinide by ethyl acetate and isocratic reversed-phase liquid chromatography with dual-channel coulometric detection. The mobile phase composition was 50mM disodium hydrogen phosphate/acetonitrile (60:40, v/v), pH of the mobile phase 7.5 set up with phosphoric acid. For all analyses, the first cell working potential was +380mV, the second was +750mV (vs. Pd/H(2)). Calibration curve was linear over the concentration range of 5-500nmolL(-1). Rosiglitazone was used as an internal standard. The limit of detection (LOD) was established at 2.8nmolL(-1), and the lower limit of quantification (LLOQ) at 8.5nmolL(-1). The developed method was applied to human plasma samples spiked with repaglinide at therapeutical concentrations. It was confirmed that the method is suitable for pharmacokinetic studies or therapeutic monitoring.
Citace poskytuje Crossref.org
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- $a Jirovský, David $u Department of Analytical Chemistry, Palacký University, tř. 17. listopadu 1192/12, CZ 771 46 Olomouc, Czech Republic. david.jirovsky@upol.cz
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