In conclusion, the ethanol extract of O. aristatus and its
bioactive compound (ursolic acid) are able to inhibit LPSstimulated
NO, PGE2 and intracellular ROS production in
RAW 264.7 cells. We observed that EEOA and ursolic acid are
also able to inhibit protein and mRNA expression of iNOS and
COX-2 in the LPS-stimulated RAW264.7 cells. Taken together,
the ethanol extract of O. aristatus may provide a beneficial effect
for inflammatory-mediated diseases.