LPS-induced phosphorylation of JNK/SAPK and c-Jun were attenuated by statin and farnesyltransferase inhibitor in the liver. To assess the effects on JNK/SAPK activation, we examined the phosphorylation status of JNK/SAPK and c-Jun at 18 h after LPS injection. Immunoblot analysis (IB) revealed that LPS increased phosphorylation of JNK/SAPK and c-Jun. Both simvastatin and farnesyltransferase inhibitor, FTI-277, decreased phosphorylation of JNK/SAPK and c-Jun in LPS-administered mice, as compared with vehicle. Neither LPS nor the inhibitors significantly altered the protein expression of JNK/SAPK and c-Jun. **p<0.01 vs without LPS, §p<0.05 vs LPS + vehicle.