title: Determination of vinca alkaloids in human plasma by liquid chromatography/atmospheric pressure chemical ionization mass spectrometry.
abstract: A sensitive assay was developed for the quantitation of vinblastine, desacetylvinblastine and vincristine using liquid chromatography-atmospheric pressure chemical ionization mass spectrometry (LC-APCI-MS). Analyses were performed on an Ultrasphere C18 microbore column using ammonium acetate as mobile phase. The calibration curves were linear across the range of 0.51-4.00 ng/ml (0.63-4.93 nM) for vinblastine, 0.74-3.93 ng/ml (0.96-5.11 nM) for desacetylvinblastine and 0.30-3.95 ng/ml (0.36-4.79 nM) for vincristine. Vinca alkaloid concentrations were measured with an accuracy and precision within 11%. This assay could be implemented to determine the plasma concentrations for pharmacokinetic studies of vinblastine, desacetylvinblastine and vincristine in conjunction with clinical trials.
authors.affiliation: Department of Medicine, University of Chicago Medical Center, IL 60637, USA.
authors.forename: J
authors.initials: J
authors.lastname: Ramírez
authors.forename: K
authors.initials: K
authors.lastname: Ogan
authors.forename: M J
authors.initials: MJ
authors.lastname: Ratain
mesh_terms: D002852:Chromatography, Ion Exchange; D002853:Chromatography, Liquid / Q000379:methods; D006801:Humans; D013058:Mass Spectrometry; D014747:Vinblastine / Q000097:blood; D014748:Vinca Alkaloids / Q000097:blood*; D014750:Vincristine / Q000097:blood
chemical_list: D014748:Vinca Alkaloids; D014750:Vincristine; D014747:Vinblastine