title: Simultaneous quantitative assay of atazanavir and 6 other HIV protease inhibitors by isocratic reversed-phase liquid chromatography in human plasma.
abstract: Several liquid chromatography methods for assay of antiretroviral drugs in human plasma have been described, but none included atazanavir. The authors describe a user-friendly, validated, and rapid technique, derived from a procedure the authors have already published, allowing simultaneous quantification of amprenavir, indinavir, lopinavir, nelfinavir (and its M8 metabolite), ritonavir, saquinavir, efavirenz, and nevirapine. Assays were performed after diethyl ether liquid-liquid extraction from 250 microL plasma samples. Chromatographic separation was achieved on an X-TERRA column using a 58% water (with 3 mM pyrrolidine) and 42% acetonitrile mobile phase; 240 nm ultraviolet wavelength was used for atazanavir detection. This method has been in routine use in our laboratory for antiretroviral drug monitoring and now allows quantitative assay of a novel HIV protease inhibitor, atazanavir, with satisfactory intra- and interassay precision (CV<12%).
authors.affiliation: Laboratoire de Pharmacologie, Hôpital de Pontchaillou, 35033 Rennes, France. olivier.tribut@chu-rennes.fr
authors.forename: Olivier
authors.initials: O
authors.lastname: Tribut
authors.forename: Marie-Clémence
authors.initials: MC
authors.lastname: Verdier
authors.forename: Cédric
authors.initials: C
authors.lastname: Arvieux
authors.forename: Hervé
authors.initials: H
authors.lastname: Allain
authors.forename: Christian
authors.initials: C
authors.lastname: Michelet
authors.forename: Danièle
authors.initials: D
authors.lastname: Bentué-Ferrer
mesh_terms: D000069446:Atazanavir Sulfate; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D017320:HIV Protease Inhibitors / Q000097:blood*; D006801:Humans; D009842:Oligopeptides / Q000097:blood*; D011725:Pyridines / Q000097:blood*
chemical_list: D017320:HIV Protease Inhibitors; D009842:Oligopeptides; D011725:Pyridines; D000069446:Atazanavir Sulfate