title: Albendazole sulphoxide concentrations in plasma of endemic normals from a lymphatic filariasis endemic region using liquid chromatography.
abstract: A simple and sensitive reversed-phase isocratic HPLC method for the determination of albendazole and its metabolites has been developed. The mobile phase consisting of acetonitrile-water-perchloric acid (70%) (30:110:0.06 (v/v/v)) was pumped at a flow rate of 0.80 ml/min on a 5 microm, reverse phase, Discovery RPamide C16 column with UV detection at 290 nm. The calibration graphs were linear in the range of 0.05- 1 microg/ml for albendazole, albendazole sulphoxide and albendazole sulphone. The limit of quantification was 50 ng/ml for albendazole, 25 ng/ml for albendazole sulphoxide and 30 ng/ml for albendazole sulphone. The within-day and day-to-day coefficient of variation averaged 4.98 and 6.95% for albendazole, 3.83 and 6.83% for albendazole sulphoxide and 3.44 and 5.51% for albendazole sulphone, respectively. The mean extraction recoveries of albendazole, albendazole sulphoxide and albendazole sulphone were 79.25, 93.03 and 88.78%, respectively. The method was applied to determine the plasma levels of albendazole sulphoxide in endemic normals administered with albendazole during pharmacokinetic studies.
authors.affiliation: Institute of Life Sciences, Nalco square, Chandrasekharpur, Near Kalinga Hospital, Bhubaneswar, Orissa 751023, India. reemasarinm@yahoo.com
authors.forename: Reema
authors.initials: R
authors.lastname: Sarin
authors.forename: A P
authors.initials: AP
authors.lastname: Dash
authors.forename: V K
authors.initials: VK
authors.lastname: Dua
mesh_terms: D000328:Adult; D015766:Albendazole / Q000031:analogs & derivatives* / Q000097:blood* / Q000493:pharmacokinetics; D000871:Anthelmintics / Q000097:blood* / Q000493:pharmacokinetics; D002138:Calibration; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D012015:Reference Standards; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000871:Anthelmintics; D015766:Albendazole; C027186:albendazole sulfoxide