TABLE 3

Inhibition of human liver microsomal amodiaquine N-deethylase activity by montelukast at varying microsomal protein concentrations


Microsomal Protein Concentration

IC50 (Mean ± S.E.)

IC90
μM μM
0.025 mg/ml 0.020 ± 0.002 0.23
0.1 mg/ml 0.072 ± 0.005 0.64
0.3 mg/ml 0.18 ± 0.01 1.7
1.0 mg/ml 0.71 ± 0.06 6.5
2.0 mg/ml
2.0 ± 0.1
18