Table 1: Inhibition of the Formation of Oxidative Epo B Metabolites by Various P450 Inhibitors

Metabolite 1 Metabolite 2 Metabolite 3
No inhibitor 100 100 100
2 µM ketoconazole 0 17 101
10 µM sulfaphenazole 93 88 100
5 µM furafylline 101 83 118
30 µM ticlopidine 133 80 54

The value indicated is the residual activity of oxidation of Epo B by a pool of human liver microsomes in the presence or not of specific inhibitors.