Ursolic acid is a potent anti-inflammatory agent. Thus,
it has been recommended for use in burn ointments4. It not only
inhibits human leucocyte elastase(HLE), but also 5-lipoxygenase and cyclooxygenase
activity21, 22. Ursolic acid (1.0 mg/ear) inhibited TPA-induced mouse ear edema
by 72.4%23. Hirota and coworkers24 determined that 200 mg and 50 mg applications of
ursolic acid inhibited 12-O-hexadecanoyl-16-hydroxyphorbol-13-acetate (HPPA) -
induced inflammation by 49% and 33%, respectively. In addition, it inhibited concanavalin
A (Con A) induced histamine release, which can cause severe inflammation, by 95% at a
concentration of 0.001 M25.