PT - JOURNAL ARTICLE AU - R B van Breemen AU - C Fenselau TI - Acylation of albumin by 1-O-acyl glucuronides. DP - 1985 May 01 TA - Drug Metabolism and Disposition PG - 318--320 VI - 13 IP - 3 4099 - http://dmd.aspetjournals.org/content/13/3/318.short 4100 - http://dmd.aspetjournals.org/content/13/3/318.full SO - Drug Metab Dispos1985 May 01; 13 AB - Representative examples of drug metabolites containing a carboxylic acid group conjugated to glucuronic acid are shown to be active chemical electrophiles, which acylate albumin in vitro through transesterification reactions. Based on these and other observations, we propose that this acylating reactivity is characteristic of 1-O-acyl glucuronides as a class, and that albumin is representative of many susceptible biopolymers. The hypothesis is advanced that this reaction can occur in vivo as well, and that it may offer a molecular mechanism for the physiological activity or toxicity of some xenobiotic and lipophilic compounds.