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Title: The effects of albendazole and its metabolites on hepatic cytochromes P450 activities in mouflon and rat. Author: Baliharová V, Velík J, Lamka J, Balarinová R, Skálová L. Journal: Res Vet Sci; 2003 Dec; 75(3):231-9. PubMed ID: 13129672. Abstract: Albendazole (ABZ) is a benzimidazole anthelmintic widely used in veterinary medicine. The effects of ABZ on cytochromes P450 were investigated in primary cultures of mouflon (Ovis musimon) and rat (Rattus norvegicus) hepatocytes. Besides ABZ, its two main metabolites (albendazole-sulphoxide, ABZSO and albendazole-sulphone, ABZSOO) were tested to clarify which compound is responsible for the induction potency of this benzimidazole drug. After 48 h incubation of hepatocytes with benzimidazoles (0.2-25 microM), ethoxyresorufin O-deethylation (EROD) and benzoxyresorufin O-dearylation (BROD) were measured and the P4501A and 3A protein levels were determined by Western blotting. All benzimidazoles provoked a significant increase of EROD and BROD activities in rat hepatocytes. ABZSO and ABZSOO seemed to be responsible for the induction effect of ABZ on P450s in rat. In mouflon, no pharmacologically significant induction of EROD and BROD activities by benzimidazoles tested was observed. From this point of view, anthelmintic therapy of mouflons with ABZ seems to be safe.[Abstract] [Full Text] [Related] [New Search]