TABLE 2

Mean relative distribution (percentage) of [14C]muraglitazar metabolites produced by human cDNA-expressed P450 enzymes


Expressed P450

Mean Relative Distribution (n = 2)a
Parent
M10
M11
M14
M15
Totalb
%
HLM (no NADPH) 94.77 0.39 0.06 0.12 0.25 95.59
HLM 85.59 3.13 0.78 1.27 1.86 92.63
1A2 90.21 0.54 0.23 0.06 0.30 91.64
2A6 89.32 0.49 0.08 0.08 0.26 90.23
2B6 90.25 0.51 0.00 0.00 0.00 90.76
2C8 89.42 1.12 0.07 0.22 1.87 92.70
2C9 90.64 3.03 0.13 0.05 0.32 94.17
2C18 91.75 0.50 0.06 0.12 0.25 92.68
2C19 68.40 6.33 18.24 0.13 0.26 93.36
2D6 82.90 1.11 0.41 0.07 0.76 85.25c
2E1 93.84 0.31 0.08 0.08 0.16 94.47
3A4 81.39 2.56 0.17 3.82 0.67 88.61d
3A5
92.35
0.57
0.09
0.33
0.41
93.75
  • a Metabolites were selected based on those predominant in vivo in human metabolites (Zhang et al., 2006). The variability between two runs was less than 15%.

  • b Total was less than 100% because low levels of degradation products eluted between 17 and 22 min on HPLC were observed in all incubations including no-NADPH control incubations.

  • c Less than 90% because M9, M16, and other radioactive peaks were prominent peaks in the incubations.

  • d Less than 90% because M1, M9, M16, and other radioactive peaks were significant peaks in the incubations.