title: Novel direct high-performance liquid chromatographic method for determination of salicylate glucuronide conjugates in human urine.
abstract: A novel direct high-performance liquid chromatographic (HPLC) assay for the simultaneous determination of three salicylate glucuronide conjugates and other salicylate metabolites in human urine has been developed. Salicylate glucuronide conjugates were purified by HPLC from the urine of a volunteer after oral administration of aspirin and identified by selective hydrolysis with beta-glucuronidase and with sodium hydroxide. This method gave high reproducibility with coefficients of variation less than 10%. The total urinary recovery of salicylic acid after a single 1.2-g dose of soluble aspirin was greater than 90%. This assay has been successfully used to re-evaluate the capacity-limited pharmacokinetics of salicylic acid in humans.
authors.affiliation: Department of Pharmacy, University of Otago Medical School, Dunedin, New Zealand.
authors.forename: J J
authors.initials: JJ
authors.lastname: Shen
authors.forename: S
authors.initials: S
authors.lastname: Wanwimolruk
authors.forename: M S
authors.initials: MS
authors.lastname: Roberts
mesh_terms: D000284:Administration, Oral; D001241:Aspirin / Q000008:administration & dosage / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005965:Glucuronates / Q000652:urine*; D006626:Hippurates / Q000652:urine*; D006801:Humans; D012459:Salicylates / Q000378:metabolism / Q000652:urine*
chemical_list: D005965:Glucuronates; D006626:Hippurates; D012459:Salicylates; C066070:salicylacyl glucuronide; C000693:salicylurate; C049960:1-salicylate glucuronide; D001241:Aspirin