A reproducible, simple and sensitive HPLC assay for determination of ofloxacin in plasma and lung tissue. Application in pharmacokinetic studies

• Published in: Journal of pharmaceutical and biomedical analysis Vol. 12; no. 11; p. 1463
• Main Authors: Fabre, D, Bressolle, F, Kinowski, J M, Bouvet, O, Paganin, F, Galtier, M
• Format: Journal Article
• Language: English
• Published: England 01-11-1994
• Subjects: Chromatography, High Pressure Liquid - methods; Drug Stability; Humans; Lung - metabolism; Lung Diseases, Obstructive - blood; Lung Diseases, Obstructive - metabolism; Ofloxacin - analysis; Ofloxacin - blood; Ofloxacin - chemistry; Ofloxacin - pharmacokinetics; Reproducibility of Results; Sensitivity and Specificity
• ISSN: 0731-7085
• DOI: 10.1016/0731-7085(94)00076-X

A high-performance liquid chromatographic method with fluorometric detection was developed for the analysis of ofloxacin in plasma and lung tissue. The detection was performed at 280 nm for excitation and 500 nm for emission. The procedure involves the addition of an internal standard followed by treatment of the samples with acetonitrile and dichloromethane. The proposed technique is reproducible, selective, reliable and sensitive. Linear detector response was observed for the calibration curve standards in the range of 0.1-5 micrograms ml-1 for plasma and 0.025-2.5 micrograms g-1 for lung tissue. The limit of quantitation is 5 ng ml-1 or 5 ng g-1. The accuracy of the method is good; that is, the relative error is < 10%. This method was applied to the pharmacokinetic study of ofloxacin in 24 chronic obstructive pulmonary disease patients.