title: Duodenogastric reflux sustains Helicobacter pylori infection in the gastric stump.
abstract: BACKGROUND
  Duodenogastric reflux (DGR) and Helicobacter pylori infection have been suspected of being contributing agents to the genesis of gastritis and subsequent cancer, but compelling, conclusive data about the exact relationship have been lacking.
  
  
  METHODS
  We investigated the effect of DGR on H. pylori infection in 95 gastrectomized subjects divided into four groups according to type of reconstruction: the jejunal pouch interposition group (JPI, n = 36); the Roux-en-Y group (RY, n = 17); the Billroth I group (B-I, n = 20); and the Billroth II group (B-II, n = 22). The following items were examined for each group: the duration of DGR; the prevalence of H. pylori infection; other bacterial identification and quantity; and the severity of gastritis.
  
  
  RESULTS
  The percent of total time of DGR was lower in the JPI (7%) and RY groups (28%) than in the B-I (59%) and B-II groups (88%) (P < 0.02). The prevalence of H. pylori infection was lower in the JPI (28%) and RY groups (29%) than in the B-I (60%) and B-II groups (73%) (P < 0.02). Inversely, the JPI and the RY groups had a higher quantity of other bacteria than the B-I group (P = 0.02). For all four groups, the stomachs infected with H. pylori were fewer than those tested negative for the organism (P < 0.0001). Inflammation scores were lower in both the JPI and RY groups than in the B-I and B-II groups (P < 0.05, respectively).
  
  
  CONCLUSIONS
  Duodenogastric reflux facilitates the survival of H. pylori in the gastric stump after a distal gastrectomy.
authors.affiliation: Dept. of Gastroenterologic Surgery, Division of Cancer Medicine, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nakagawara
authors.forename: K
authors.initials: K
authors.lastname: Miwa
authors.forename: S
authors.initials: S
authors.lastname: Nakamura
authors.forename: T
authors.initials: T
authors.lastname: Hattori
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004383:Duodenogastric Reflux / Q000150:complications*; D005260:Female; D005743:Gastrectomy / Q000379:methods; D018530:Gastric Stump / Q000503:physiopathology*; D005756:Gastritis / Q000209:etiology* / Q000473:pathology; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged; D013270:Stomach / Q000821:virology; D013274:Stomach Neoplasms / Q000601:surgery