Table 2

CYP2C9 and CYP2C19 content in human liver microsomes

Liver SampleP-450 Content2-aCYP2C92-bCYP2C192-b
pmol/mg
A276111.135.4
B28068.936.1
C137104.715.5
D414118.516.0
E22118.4BD2-c
F15568.6BD2-c
G333117.71.9
H1,090nd2-d 28.6
I29375.73.0
  • 2-a Aggregate P-450 content, as determined from the CO-reduced spectrum.

  • 2-b Immunoreactive enzyme content, CYP2C9 and CYP2C19 levels in human liver samples were quantified on Western blots staining with anti-CYP2C9-P and polyspecific anti-CYP2C19, respectively.

  • 2-c BD, below limits of detection.

  • 2-d nd, not determined.