title: Simultaneous high-performance liquid chromatographic determination of the antiretroviral agents amprenavir, nelfinavir, ritonavir, saquinavir, delavirdine and efavirenz in human plasma.
abstract: This article describes a method for the simultaneous determination of four licensed HIV protease inhibitors (amprenavir, nelfinavir, saquinavir and ritonavir) and two novel non-nucleoside reverse transcriptase inhibitors (efavirenz and delavirdine) in human plasma in a single run. Plasma samples (500 microl) were treated by liquid-liquid extraction with methyl tert.-butyl ether. The compounds were separated by reversed-phase liquid chromatography on a C(18) column with spectrophotometric detection at 260 nm. The method is linear over the specific ranges investigated, accurate (inaccuracy <11.7%) and showed intra-day and inter-day precision within the ranges of 0.9-7.0 and 1.9-8.8%, respectively. The six compounds were stable in plasma after 6 months of storage at -20 degrees C and after five freeze-thaw cycles.
authors.affiliation: Hôpital Necker Enfants Malades, Service Pharmacie, Paris, France.
authors.forename: V
authors.initials: V
authors.lastname: Proust
authors.forename: K
authors.initials: K
authors.lastname: Toth
authors.forename: A
authors.initials: A
authors.lastname: Hulin
authors.forename: A M
authors.initials: AM
authors.lastname: Taburet
authors.forename: F
authors.initials: F
authors.lastname: Gimenez
authors.forename: E
authors.initials: E
authors.lastname: Singlas
mesh_terms: D019380:Anti-HIV Agents / Q000097:blood*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D017320:HIV Protease Inhibitors / Q000097:blood*; D006801:Humans; D015203:Reproducibility of Results; D018894:Reverse Transcriptase Inhibitors / Q000097:blood*; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet
chemical_list: D019380:Anti-HIV Agents; D017320:HIV Protease Inhibitors; D018894:Reverse Transcriptase Inhibitors