title: Analysis of blood and urine samples from Macaca mulata for pyronaridine by high-performance liquid chromatography with electrochemical detection.
abstract: We describe a high-performance liquid chromatographic method with electrochemical detection for quantifying pyronaridine in rhesus monkey (Macaca mulata) blood and urine samples. The detection limit is 20 ng/ml at a signal-to-noise ratio of 4 in 0.5-ml samples of blood or urine. Blood analysis includes a liquid-liquid extraction and a subsequent solid-phase extraction that removes an interferent present in blood. For urine, a back-extraction is substituted for the solid-phase extraction step. The method uses an analogue of amodiaquine as internal standard, a 10-microns rigid macroporous styrene-divinylbenzene copolymer column and a mobile phase of 1% (v/v) triethylamine in methanol-water (34:66, v/v). The method was applied to samples of blood and urine from a monkey after a single intramuscular dose of pyronaridine tetraphosphate (160 mg as base).
authors.affiliation: Control Technology Branch, Centers for Disease Control, Atlanta, GA 30333.
authors.forename: S A
authors.initials: SA
authors.lastname: Wages
authors.forename: L C
authors.initials: LC
authors.lastname: Patchen
authors.forename: F C
authors.initials: FC
authors.lastname: Churchill
mesh_terms: D000818:Animals; D000962:Antimalarials / Q000032:analysis* / Q000097:blood / Q000652:urine; D002851:Chromatography, High Pressure Liquid; D004563:Electrochemistry; D008253:Macaca mulatta; D009287:Naphthyridines / Q000032:analysis* / Q000097:blood / Q000652:urine
chemical_list: D000962:Antimalarials; D009287:Naphthyridines; C027871:pyronaridine