TY - JOUR T1 - Biodisposition studies with the acyl-coenzyme A: cholesterol acyltransferase inhibitor 2,2-dimethyl-N-(2,4,6-trimethoxyphenyl)dodecanamide, CI-976. JF - Drug Metabolism and Disposition JO - Drug Metab Dispos SP - 1112 LP - 1118 VL - 21 IS - 6 AU - T F Woolf AU - A Black AU - Y Y Shum AU - W McNally AU - H Lee AU - T Chang Y1 - 1993/11/01 UR - http://dmd.aspetjournals.org/content/21/6/1112.abstract N2 - 2,2-Dimethyl-N-(2,4,6-trimethoxyphenyl)dodecanamide, CI-976, is a newly developed fatty acid anilide being evaluated as a plasma lipid regulator and antiatherosclerotic agent. Disposition studies with CI-976 were conducted in rats and monkeys. In rats, CI-976 (suspension, 50 mg/kg) was approximately 30% bioavailable, with 46% of the administered radioactivity recovered in urine suggesting presystemic metabolism. The intravenous elimination half-life of CI-976 in rats was approximately 8 hr. Radioactivity derived from [14C]CI-976 was almost completely recovered in rats after either oral or intravenous administration. In bile duct-cannulated rats receiving either an oral or intravenous dose, biliary excretion was the major route of drug-derived radioactivity elimination. There was no evidence for unchanged drug in urine or bile. In monkeys, 13% urinary recovery and 5% bioavailability was achieved after a single 50 mg/kg suspension dose. Similar values were obtained following a 250 mg/kg dose. Monkeys displayed a CI-976 elimination half-life of 0.6 hr after a 2 mg/kg intravenous dose. No unchanged drug was excreted in urine. In summary, CI-976 exhibits moderate absorption and bioavailability in the rat, but lower absorption and bioavailability in monkey. A special difference in CI-976 elimination half-life was observed consistent with in vitro metabolism results. ER -