Abstract：
BACKGROUND:Barrett's esophagus (BE) is characterized by a distinct Th2-predominant cytokine profile. However, antigens that shift the immune response toward the Th2 profile are unknown. AIM:We examined the effects of rebamipide on the esophageal microbiome and BE development in a rat model. METHODS:BE was induced by esophagojejunostomy in 8-week-old male Wistar rats. Rats were divided into control and rebamipide-treated group receiving either a normal or a 0.225 % rebamipide-containing diet, respectively, and killed 8, 16, 24, and 32 weeks after the operation. PCR-amplified 16S rDNAs extracted from esophageal samples were examined by terminal-restriction fragment length polymorphism (T-RFLP) analysis to assess microbiome composition. The dynamics of four bacterial genera (Lactobacillus, Clostridium, Streptococcus, and Enterococcus) were analyzed by real-time PCR. RESULTS:The incidences of BE in the control and rebamipide group at 24 and 32 weeks were 80 and 100, and 20 and 33 %, respectively. T-RFLP analysis of normal esophagus revealed that the proportion of Clostridium was 8.3 %, while that of Lactobacillales was 71.8 %. The proportions of Clostridium increased and that of Lactobacillales decreased at 8 weeks in both groups. Such changes were consistently observed in the control but not in the rebamipide group. Clostridium and Lactobacillus expression was lower and higher, respectively, in the rebamipide group than in the control group. CONCLUSIONS:Rebamipide reduced BE development and altered the esophageal microbiome composition, which might play a role in BE development.
journal_name
Dig Dis Scijournal_title
Digestive diseases and sciencesauthors
Kohata Y,Nakahara K,Tanigawa T,Yamagami H,Shiba M,Watanabe T,Tominaga K,Fujiwara Y,Arakawa Tdoi
10.1007/s10620-015-3662-4subject
Has Abstractpub_date
2015-09-01 00:00:00pages
2654-61issue
9eissn
0163-2116issn
1573-2568journal_volume
60pub_type
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