title: Effect of rebamipide in treatment of Helicobacter pylori-associated duodenal ulcer: attenuation of chemokine expression and nitrosative damage.
abstract: Production of cytokines along with increased activity of nitric oxide synthase has been implicated as one of the contributing mechanisms of Helicobacter pylori-mediated gastroduodenal diseases. We aimed to evaluate the effect of rebamipide in treating Helicobacter pylori-associated duodenal ulcers in terms of cytokine production and nitrosative damage of the gastric mucosa. In patients with duodenal ulcers, rebamipide or placebo were given randomly after eradication. Mucosal cytokine production was measured by enzyme linked immunoassay, and nitrotyrosine immunoexpression was measured by immunohistochemistry. The inflammatory activity and degree of neutrophil infiltration were graded accordingly. The mucosal production of RANTES, interleukin-8, and TNF-alpha showed a significant decrease after eradication in patients with rebamipide after-treatment. The nitrotyrosine immunoreactivity of gastric epithelium was significantly decreased in the rebamipide group. Rebamipide treatment after eradication resulted in a significant reduction in chemokine production along with nitrotyrosine immunoexpression in Helicobacter pylori-associated duodenal ulcers.
authors.affiliation: Department of Internal Medicine, Sung Kyun Kwan University College of Medicine, Seoul, Korea.
authors.forename: K W
authors.initials: KW
authors.lastname: Choi
authors.forename: Y C
authors.initials: YC
authors.lastname: Lee
authors.forename: I S
authors.initials: IS
authors.lastname: Chung
authors.forename: J J
authors.initials: JJ
authors.lastname: Lee
authors.forename: M H
authors.initials: MH
authors.lastname: Chung
authors.forename: N Y
authors.initials: NY
authors.lastname: Kim
authors.forename: S W
authors.initials: SW
authors.lastname: Kim
authors.forename: J G
authors.initials: JG
authors.lastname: Kim
authors.forename: I H
authors.initials: IH
authors.lastname: Roe
authors.forename: S W
authors.initials: SW
authors.lastname: Lee
authors.forename: H Y
authors.initials: HY
authors.lastname: Jung
authors.forename: M G
authors.initials: MG
authors.lastname: Choi
authors.forename: K B
authors.initials: KB
authors.lastname: Hahm
authors.forename: W S
authors.initials: WS
authors.lastname: Hong
authors.forename: J H
authors.initials: JH
authors.lastname: Kim
mesh_terms: D000328:Adult; D000409:Alanine / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D000975:Antioxidants / Q000627:therapeutic use*; D018946:Chemokine CCL5 / Q000096:biosynthesis; D016207:Cytokines / Q000096:biosynthesis*; D004359:Drug Therapy, Combination; D004381:Duodenal Ulcer / Q000188:drug therapy* / Q000378:metabolism / Q000382:microbiology*; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005753:Gastric Mucosa / Q000378:metabolism*; D016481:Helicobacter Infections / Q000150:complications* / Q000188:drug therapy / Q000378:metabolism; D016480:Helicobacter pylori; D006801:Humans; D007150:Immunohistochemistry; D007375:Interleukin-1 / Q000096:biosynthesis; D016209:Interleukin-8 / Q000096:biosynthesis; D008297:Male; D015363:Quinolones / Q000627:therapeutic use*; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis; D014443:Tyrosine / Q000031:analogs & derivatives* / Q000096:biosynthesis
chemical_list: D000975:Antioxidants; D018946:Chemokine CCL5; D016207:Cytokines; D007375:Interleukin-1; D016209:Interleukin-8; D015363:Quinolones; D014409:Tumor Necrosis Factor-alpha; C002744:3-nitrotyrosine; D014443:Tyrosine; C052785:rebamipide; D000409:Alanine