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| 1 | Tojapride Reverses Esophageal Epithelial Inflammatory Responses on Reflux Esophagitis Model Rats显示文摘Objective To investigate the mechanism of Tojapride,a Chinese herbal formula extract,on strengthening the barrier function of esophageal epithelium in rats with reflux esophagitis(RE).Methods Ten out of 85 SD rats were randomly selected as the sham group(n10),and 75 rats were developed a reflux esophagitis model(RE)by the esophageal and duodenal side-to-side anastomosis.Fifty successful modeling rats were divided into different medicated groups through a random number table including the model,low-,medium-,and high-dose of Tojapride as well as omeprazole groups(n10).Three doses of Tojapride[5.73,11.46,22.92 g/(kg•d)]and omeprazole[4.17 mg/(kg•d)]were administrated intragastrically twice daily for 3 weeks.And the rats in the sham and model groups were administered 10 mL/kg distilled water.Gastric fluid was collected and the supernatant was kept to measure for volume,pH value and acidity.Esophageal tissues were isolated to monitor the morphological changes through hematoxylin-eosin(HE)staining,and esophageal epithelial ultrastructure was observed by transmission electron microscopy.The expressions of nuclear factor kappa-light-chain-enhancer of activated B cells p65(NF-KBp65),κB kinase beta(IKKß),occludin,and zonula occludens-1(ZO-1)in the esophageal tissues were measured by immunohistochemistry and Western blot,respectively.Results The gastric pH value in the model group was significantly lower than the sham group(P<0.05).Compared with the model group,gastric pH value in the omeprazole and medium-dose of Tojapride groups were significantly higher(P<0.05).A large area of ulceration was found on the esophageal mucosa from the model rats,while varying degrees of congestion and partially visible erosion was observed in the remaining groups.Remarkable increase in cell gap width and decrease in desmosome count was seen in RE rats and the effect was reversed by Tojapride treatment.Compared with the sham group,the IKKßlevels were significantly higher in the model group(P<0.05).However,the IKKßlevels were down-regulated after treatment by all doses of Tojapride(P<0.01 or P<0.05).The occluding and ZO-1 levels decreased in the model group compared with the sham group(Ps0.01 or Ps0.05),while both indices were significantly up-regulated in the Tojapride-treated groups(P<0.01 or P<0.05).Conclusions Tojapride could improve the pathological conditions of esophageal epithelium in RE rats.The underlying mechanisms may involve in down-regulating the IKKßexpression and elevating ZO-1 and occludin expression,thereby alleviating the inflammation of the esophagus and strengthening the barrier function of the esophageal epithelium. | YIN Xiao-lan ZHONG Linda LIN Cheng-yuan SHI Xiao-shuang ZHANG Jiao CHEN Zheng-yi CHE Hui MA Xiang-xue TIAN Ya-xin DUAN Yuan-zhi LU Lin Jl Hai-jie ZHAO Ying-pan TANG Xu-dong WANG Feng-yun | 2021 | Chinese Journal of Integrative Medicine2021，27，8： | 4 |
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