TABLE 1

Inducing agent properties

Data were compiled from Gilman et al. (1990); Blumberg et al. (1998); Zhang et al. (1998); Moore et al. (2000a,b); Dussault et al. (2001); and Morello et al. (2003).


Agent

F

Species

PXR Activation
hPXR
mPXR
Dexamethasone 78% Human 0 ++
Nelfinavir ND 0 0
Nifedipine 50% Human ++ +
PCN ND 0 +++
Rifampin 76% Rat +++ 0/+
St. John's wort ND ++ ND
Tamoxifen
>95%
Human
+
0
  • F, oral bioavailability; hPXR, human PXR; mPXR, mouse PXR; 0, no activity; +, some activity; ++, moderate activity; +++, strong activity; ND, no data.