Table 2

Inhibition of morphine glucuronidation by FNZ in dog and human liver microsomes

SpeciesMorphine Glucuronidation RateMorphine Glucuronidation Rate with 50 μM FNZPercentage of Inhibition
nmol/min/mg of protein
Dog 12338  ± 12048
Human F5.5  ± 0.33.7  ± 0.332

FNZ (50 μM) inhibited morphine glucuronidation in dog and human liver microsomes. Assays are described in Materials and Methods. Values represent an average of two incubations or mean ± S.D. of three incubations.