Table 4

Kinetic parameters for metabolism of MDZ and inhibition by ITZ, ITZ-OH, and KTZ in rat microsomes

Metabolism of MDZKi
KmVmax
μM nmol/mg protein/min μM
ITZ7.16  ± 0.182.09  ± 0.020.23  ± 0.01
ITZ-OH7.03  ± 0.464.00  ± 0.0918.2  ± 1.1
KTZ6.84  ± 0.463.92  ± 0.100.16  ± 0.01
  • Km, Vmax, andKi represent Michaelis-Menten constant, maximum metabolic reaction velocity, and inhibition constant, respectively. Values are means ± S.D. (n = 3).