Restricted accessResearch articleFirst published online 2019-06
Chemopreventive Activity of Red Ginseng Oil in a Mouse Model of Azoxymethane/Dextran Sulfate Sodium-Induced Inflammation-Associated Colon Carcinogenesis
Our previous studies have demonstrated antioxidant and cytoprotective properties of red ginseng oil (RGO). However, the role of RGO in models of intestinal inflammation has not been elucidated. In this study, we evaluated the chemopreventive effect of RGO in a mouse model of azoxymethane/dextran sulfate sodium (AOM/DSS)-induced colitis and explored its underlying mechanisms. Male C57BL/6 mice were intraperitoneally injected with a single dose of AOM (10 mg/kg), followed by 1.5% DSS in drinking water for 7 days to produce colon carcinogenesis. RGO at 10 or 100 mg/kg was orally given for 17 weeks. RGO supplementation reduced the plasma nitric oxide (NO) concentration as well as lipid peroxidation and inhibited the production of proinflammatory factors such as inducible NO synthase, cyclooxygenase-2, interleukin 1β, IL-6, and tumor necrosis factor-α in the mouse colitis tissue. Increased phosphorylation levels of p65 and IκB by AOM/DSS exposure were attenuated by the presence of RGO. In addition, RGO supplementation induced the activity of primary antioxidant enzymes such as superoxide dismutase and catalase as well as the expression of nuclear factor erythroid 2–related factor 2-mediated antioxidant enzyme hemeoxygenase-1 in the colons of AOM/DSS-treated mice. These findings indicate that RGO may be a potent natural chemopreventive agent for ameliorating inflammatory bowel diseases.
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