EVALUATION OF THE INDUCTION OF HEPATIC DRUG-METABOLIZING ENZYMES IN THE RAT AND MOUSE TREATED WITH TEMAZEPAM USING TRIMETHADIONE AS THE INDICATOR

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In the present paper we report the effect of high doses of temazepam on drug-metabolism induction in rat and mouse. Temazepam induced a dose-dependent and reversible increase of hepatic microsomal drug-metabolizing enzymes in the rat, dose-correlated increase of dimethadione / trimethadione ratios in plasma of the rat, and dose-related shortening of hexobarbital-induced sleeping time in the mouse. In this study trimethadione is considered a good indicator for estimating the state of hepatic enzyme induction.