title: Development and validation of a quantitative assay for the measurement of miltefosine in human plasma by liquid chromatography-tandem mass spectrometry.
abstract: A sensitive and specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay for the quantification of miltefosine is presented. A 250 microL human EDTA plasma aliquot was spiked with miltefosine and extracted by a solid-phase extraction method. Separation was performed on a Gemini C18 column (150 mm x 2.0 mm I.D., 5 microm) using an alkaline eluent. Detection was performed by positive ion electrospray ionization followed by triple-quadrupole mass spectrometry. The assay has been validated for miltefosine from 4 to 2000 ng/mL using 250 microL human EDTA plasma samples. Results from the validation demonstrate that miltefosine can be accurately and precisely quantified in human plasma. At the lowest level, the intra-assay precision was lower than 10.7%, the inter-assay precision was 10.6% and accuracies were between 95.1 and 109%. This assay is successfully used in a clinical pharmacokinetic study with miltefosine.
authors.affiliation: Department of Pharmacy & Pharmacology, Slotervaart Hospital/The Netherlands Cancer Institute, Louwesweg 6, 1066 EC Amsterdam, The Netherlands. thomas.dorlo@slz.nl
authors.forename: Thomas P C
authors.initials: TP
authors.lastname: Dorlo
authors.forename: Michel J X
authors.initials: MJ
authors.lastname: Hillebrand
authors.forename: Hilde
authors.initials: H
authors.lastname: Rosing
authors.forename: Teunis A
authors.initials: TA
authors.lastname: Eggelte
authors.forename: Peter J
authors.initials: PJ
authors.lastname: de Vries
authors.forename: Jos H
authors.initials: JH
authors.lastname: Beijnen
mesh_terms: D000981:Antiprotozoal Agents / Q000097:blood* / Q000493:pharmacokinetics; D002853:Chromatography, Liquid / Q000379:methods*; D006801:Humans; D010767:Phosphorylcholine / Q000031:analogs & derivatives* / Q000097:blood / Q000493:pharmacokinetics; D012680:Sensitivity and Specificity; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D000981:Antiprotozoal Agents; D010767:Phosphorylcholine; C039128:miltefosine