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[Induced modifications of liver cytochrome P-450 levels as a function of age in rats].

In this paper we showed age effect on hepatic level of cytochrome P-450. We discussed effects of inductors on this hemoprotein also. Cytochrome P-450 content increased to 1-month of life, but decreased to 4-month. In the oldest rats cytochrome P-450 increased again. Content of this hemoprotein was induced by phenobarbital and beta-naphthoflavone in all examined groups, especially strong in young animals. Induction effect of dexamethasone was observed in 4-20-month of life.