title: Determination of vinflunine in rat plasma by liquid chromatography-electrospray ionization mass spectrometry for a pharmacokinetic study.
abstract: A rapid, simple and sensitive high-performance liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS) method for the quantification of vinflunine in rat plasma was developed and validated. After making alkaline with NaOH, plasma was extracted with ethyl acetate and determined by LC-MS. The analysis was carried out on a Shimadzu VP-ODS column (150 mmx4.6 mm ID, packed with 5 microm C18 Silica RP particle). The mobile phase consisted of methanol-10 mM ammonium acetate buffer (80:20, v/v) with the flow rate of 1.0 ml/min. LC-MS was performed in the selected ion monitoring (SIM) mode using target ions at m/z: 817.3 for vinflunine and m/z: 373.2 for finasteride (IS). Chromatographic separation was achieved in less than 6 min and the calibration curve was linear over a concentration range of 0.025-6.25 microg/ml. The intra-assay and inter-assay variability values were less than 8.6%. The accuracy ranged from 91.5 to 105.6%. The established method has been successfully applied to a pharmacokinetic study of vinflunine in rats.
authors.affiliation: Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, 210009, PR China.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Zhao
authors.forename: Xiaoquan
authors.initials: X
authors.lastname: Liu
authors.forename: Yongsheng
authors.initials: Y
authors.lastname: Wang
authors.forename: Jiao
authors.initials: J
authors.lastname: Zhong
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.forename: Guangji
authors.initials: G
authors.lastname: Wang
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000097:blood* / Q000493:pharmacokinetics; D019540:Area Under Curve; D002138:Calibration; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005260:Female; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization; D014747:Vinblastine / Q000031:analogs & derivatives* / Q000097:blood / Q000493:pharmacokinetics
chemical_list: D000970:Antineoplastic Agents; C111217:vinflunine; D014747:Vinblastine