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• W1963564425 abstract "Background Reflux-induced injury and oxidative stress result in esophageal inflammation and the potential for progression to intestinal metaplasia and adenocarcinoma. Proton-pump inhibitors represent the standard medical approach, but anti-inflammatories and antioxidants offer novel therapeutic possibilities. Materials and methods Six weeks after an esophagojejunostomy reflux procedure, female Wistar rats (n = 100) were randomized to receive either an antioxidant (vitamin C, 8 mg or 28 mg/day), a cyclooxygenase-2 (COX-2) inhibitor (rofecoxib, 1 mg/day), or no therapy. After sacrifice 16 weeks later, esophageal injury was scored using pathologic and image analysis scoring. Results Esophagitis was present in all 63 animals completing the study and severe in 27 (43%). No animal developed metaplasia or tumor. The extent of inflammation and esophageal ulceration were not significantly different between experimental groups. Conclusions In this model of reflux injury, antioxidants and COX-2 inhibitors failed to ameliorate the severe inflammation induced. Further experimental designs should evaluate these novel approaches in less severe experimental models. Reflux-induced injury and oxidative stress result in esophageal inflammation and the potential for progression to intestinal metaplasia and adenocarcinoma. Proton-pump inhibitors represent the standard medical approach, but anti-inflammatories and antioxidants offer novel therapeutic possibilities. Six weeks after an esophagojejunostomy reflux procedure, female Wistar rats (n = 100) were randomized to receive either an antioxidant (vitamin C, 8 mg or 28 mg/day), a cyclooxygenase-2 (COX-2) inhibitor (rofecoxib, 1 mg/day), or no therapy. After sacrifice 16 weeks later, esophageal injury was scored using pathologic and image analysis scoring. Esophagitis was present in all 63 animals completing the study and severe in 27 (43%). No animal developed metaplasia or tumor. The extent of inflammation and esophageal ulceration were not significantly different between experimental groups. In this model of reflux injury, antioxidants and COX-2 inhibitors failed to ameliorate the severe inflammation induced. Further experimental designs should evaluate these novel approaches in less severe experimental models." @default.
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• W1963564425 date "2007-09-01" @default.
• W1963564425 modified "2023-09-26" @default.
• W1963564425 title "Neither Antioxidants nor COX-2 Inhibition Protect Against Esophageal Inflammation in an Experimental Model of Severe Reflux" @default.
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• W1963564425 doi "https://doi.org/10.1016/j.jss.2007.01.002" @default.
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