Objective To study the anti-inflammatory effect and mechanisms of the water extract of white peony root in comparison with the total glucosides of paeonia( TGP). Methods The anti-inflammatory effects of the water extract of white peony root and TGP were measured in three models: mice ear swelling induced by xylene,rats paw swelling induced by albumen and mice chronic granuloma induced by agar. Subsequently,the levels of PGE2 in the serum of agar-induced granuloma mice,and the levels of NO,MDA and PGE2 in sw...