A comparison of basal and induced hepatic microsomal cytochrome P450 monooxygenase activities in the cynomolgus monkey (Macaca fascicularis) and man
1999
1. The specific activities of hepatic microsomal cortisol 6β-hydroxylase, coumarin 7-hydroxylase, S-mephenytoin 4'-hydroxylase and phenoxazone hydroxylase and the O-dealkylations of seven homologous alkoxyresorufins were 6-fold higher, whereas tolbutamide hydroxylase was almost 5-fold lower in the UT monkey than in man. 3. Phenobarbitone induced (2-6-fold) coumarin 7-hydroxylase, cortisol 6β-hydroxylase, S-mephenytoin N-demethylase, phenoxazone hydroxylase and benzyloxyresorufin O-dealkylase activities, but not the O-dealkylations of pentoxyresorufin or other alkoxyresorufins, in monkey. 4. Rifampicin induced (2-3-fold) cortisol 6β-hydroxylase, S-mephenytoin 4′-hydroxylase, S-mephenytoin N-demethylase and tolbutamide hydroxylase activities, the O-dealkylations of methoxy-, ethoxy- and propoxyresorufi...
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