title: Determination of albendazole metabolites in plasma by HPLC.
abstract: Albendazole is an antihelminthic agent belonging to the benzimidazole class and has been used successfully in the treatment of neurocysticercosis. We report here a method for the determination of the two major albendazole metabolites in plasma, albendazole sulfone and albendazole sulfoxide. The method consists of drug extraction from 500 microL of plasma previously acidified with chloroform-isopropanol (9:1, v/v) and extract purification with n-hexane immediately before chromatographic analysis. Separation of drugs and of the internal standard (mebendazole) was performed on an RP-18 column using acetonitrile-0.25N sodium acetate buffer (3:7, v/v), pH 5.0, as the mobile phase and using detection at 290 nm.
authors.affiliation: Faculty of Pharmacy, Federal University of Maranhão, Brazil.
authors.forename: M E
authors.initials: ME
authors.lastname: Valois
authors.forename: O M
authors.initials: OM
authors.lastname: Takayanagui
authors.forename: P S
authors.initials: PS
authors.lastname: Bonato
authors.forename: V L
authors.initials: VL
authors.lastname: Lanchote
authors.forename: D
authors.initials: D
authors.lastname: Carvalho
mesh_terms: D000293:Adolescent; D000328:Adult; D015766:Albendazole / Q000031:analogs & derivatives* / Q000097:blood; D002648:Child; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results
chemical_list: C027187:albendazole sulfone; D015766:Albendazole; C027186:albendazole sulfoxide