Abstract
This study was designed to determine whether irisolidone and its glycoside kakkalide, which are the major constituents of the flower of Pueraria lobata (Kudzu) can attenuate ethanol-induced gastritic injury in mice. Irisolidone and kakkalide inhibited IL-8 secretion and NF-κB activation in lipopolysaccharide-stimulated KATO III cells. Therefore, we investigated their protective effects against ethanol-induced gastric injury in mice. Pretreatment with kakkalide or irisolidone decreased the area of hemorrhagic ulcerative lesions caused by ethanol and suppressed stomach myeloperoxidase activity, CXCL4 secretion, and NF-κB activation. The ameliorating effect of irisolidone was more potent than that of kakkalide. Irisolidone may attenuate ethanol-induced gastritis by inhibiting the infiltration of immune cells, particularly neutrophils, through the regulation of CXCL-4 or IL-8 secretion.
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