Determination of trovafloxacin in human body fluids by high-performance liquid chromatography.
For the quantitative determination of trovafloxacin (a new naphthyridinone antibacterial agent) in serum and urine a simple isocratic HPLC method with fluorimetric detection is described. Serum was deproteinised with a mixture of acetonitrile and perchloric acid. The protein-free extract was separated on a reversed-phase column (Nucleosil 100-5 C18) and quantified by means of fluorescence (excitation 275 nm, emission 405 nm). The mobile phase consisted of a mixture of 250 ml acetonitrile and 750 ml distilled water containing 10 mmol/l tetrabutylammonium phosphate. Urine was diluted with 0.25 mol/l phosphoric acid 1:20 (v/v) which was adjusted to pH 3.6 with sodium hydroxide solution. Diluted urine samples were separated on a cation-exchange column (Nucleosil 100-5 SA) and also detected by means of fluorescence. Trovafloxacin was sufficiently separated from endogenous compounds. Results of validation are given. The method was applied successfully to a study of healthy volunteers.
Institute for Clinical Chemistry and Pathobiochemistry, Universitätsklinikum Benjamin Franklin, Freie Universität Berlin, Germany.
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Hartwig
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Lode
D000890:Anti-Infective Agents / Q000097:blood / Q000493:pharmacokinetics* / Q000652:urine; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D024841:Fluoroquinolones; D006801:Humans; D009287:Naphthyridines / Q000097:blood / Q000493:pharmacokinetics* / Q000652:urine; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence
D000890:Anti-Infective Agents; D024841:Fluoroquinolones; D009287:Naphthyridines; C080163:trovafloxacin