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ORIGINAL ARTICLE
Year : 2022  |  Volume : 18  |  Issue : 78  |  Page : 435-442

Protective effect of fermented Cudrania tricuspidata fruit extracts on acute rat reflux esophagitis


Agricultural College, Yanbian University, Yanji City, Jilin Province, People's Republic of China Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju-si, Jeollanam-do; Department of Crop Science and Biotechnology, Chonbuk National University, Jeonju, Republic of Korea

Correspondence Address:
Byung-Kil Choo
Department of Crop Science and Biotechnology, Chonbuk National University, Jeonju - 54896
Republic of Korea
Hyeon-Hwa Nam
Herbal Medicine Resources Research Center Korea Institute of Oriental Medicine, Naju-si, Jeollanam-do, 58245
Republic of Korea
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/pm.pm_481_21

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Background: Reflux esophagitis (RE) is a type of gastroesophageal reflux disease (GERD) that severely reduces the quality of life. The Cudrania tricuspidata (C. tricuspidata) fruit is commonly used in food and has medicinal values such as clearing heat, relaxing muscles, and collaterals. Objectives: We evaluated fermented C. tricuspidata fruit extract (FCt) in this study. We measured its anti-inflammatory activity by using LPS-induced Raw 264.7 cell model and evaluated its role in improving acute reflux esophagitis in rats. Materials and Methods: The gastrodin content before and after fermentation was determined. NO production in cell supernatant was measured using the Griess reagent method, and TNF-α and IL-1β secretion was detected using the Quantikine ELISA kit. Expression level of proteins was measured by western blotting. Immunofluorescence assay was used for confirming the activation of NF-κB. The protective effects of FCt on RE were conducted in the rat RE model by observing esophageal tissue damage and inflammatory proteins expression levels in the esophagus. Results: The results showed that the content of gastrodin in C. tricuspidata fruit increased upon fermentation. FCt inhibited the production of NO, TNF-α, and IL-1β and the activation of NF-κB. In addition, FCt significantly improved esophageal tissue damage caused by acid reflux and inhibited the expression of inflammatory proteins iNOS and COX-2 in esophageal tissue. The term of tight junction (claudin-4) is increased to maintain the barrier function of cell tissues. Conclusion: We suggested that FCt could consider being a candidate medicine material for treating RE.


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