Abstract
Ofurace, oxadixyl, and alachlor were studied for their effect on hepatic xenobiotic biotransformation in male rats by dosing i.p. with 1 or 100 mg/kg of chemical for 7 days. Ofurace decreased ethoxyresorufin-O-deethylase and aniline p-hydroxylase activities but induced ethoxycoumarin-O-deethylase activity. Glutathione S-transferase and aminopyrine N-demethylase activities responded in a non dose-dependent manner, while cytochrome P-450 content and aldrin epoxidase activities were unchanged. Oxadixyl induced P-450 content, and ethoxycoumarin-O-deethylase and aminopyrine N-demethylase activities. It left ethoxyresorufin-O-deethylase, aldrin epoxidase and epoxide hydrolase activities unchanged and decreased aniline p-hydroxylase activities. Alachlor induced all activities excepting aldrin epoxidase (no change) and aniline p-hydroxylase (decreased). The data indicate that each of these acylanilide pesticides interacts with the monooxygenase system but with differing patterns.
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