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Objectives : The present study was conducted to evaluate protective effects of Combined Extract of young persimmon fruit and citrus peel (PCM) in Reflux Esophagitis(RE) rats. Methods : Twenty-four Sprague-Dawley (SD) rats were divided four groups and each group had six rats ; Normal group, RE control group, RE group treated PCM 50 ,100 mg/kg body weight group. Reflux esophagitis was induced that tied the pylorus and fundus in SD rats stomach. PCM was administered at 50, 100 mg/kg body weight 2 hrs prior to induction of RE. After 6 hrs, the effects of PCM treated rats were compared with those of normal and control rats. We have performed an analysis such as pH of stomach secretion, oxidative stress biomarkers in serum, and western blot. Results : The increased esophageal mucosa damage by RE was markedly improved by PCM treatment in a dosedependent manner. Also, the administration of PCM decreased the elevated serum reactive oxygen species (ROS) and peroxynitrite (ONOO) in serum. The protein expressions of anti oxidant such as SOD, catalase, GPx exhibited down-regulation by PCM treatment in tissues. And, PCM effectively reduce inflammatory cytokines such as inflammation-related proteins cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), Tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) in RE rats. In addition, NFκB and p-IκBɑ were decreased in PCM-adiministrated RE rats. But there was no difference on stomach secretion pH between reflux esophagitis rats and PCM administration rat group. Conclusions : In conclusion, administration of PCM (50, 100mg/kg body weight) made esophagus have less inflammation and injury by decreased NFκB path way. These findings suggest that PCM could have Improving effects on reflux esophagitis.

Improving Effects on Rats with Reflux Esophagitis Treated with Combined Extract of Young persimmon fruit and Citrus peel