Summary
Otic medications containing triamcinolone or dexamethasone were administered twice daily for 21 days to 2 groups of 4 healthy dogs each. Serum alkaline phosphatase, γ-glutamyltransferase, alanine transaminase, and aspartate transaminase activities, and serum bile acid and lipoprotein-X concentrations were assayed for 35 days.
Increased serum activities for γ-glutamyltransferase, alkaline phosphatase, and alanine transaminase were detected by day 7 and peaked at day 21. Increases were greater in dogs given the dexamethasone-containing medication. Enzyme activity returned to baseline by day 35. Serum aspartate transaminase activity and bile acid and lipoprotein-X concentrations did not increase.