title: Influence of Helicobacter pylori infection and the effects of its eradication on gastric emptying in non-ulcerative dyspepsia.
abstract: OBJECTIVE
  The aim of the present study was to clarify the effects of Helicobacter pylori infection and its eradication on gastric emptying.
  
  
  METHODS
  Out of a total of 52 patients with non-ulcerative dyspepsia, 34 H.pylori-positive patients were enrolled. Antimicrobial drugs for the eradication of H. pylori were administered to 19 out of the 34 H. pylori-positive patients. Gastric emptying was evaluated according to the acetaminophen method. Inflammatory changes and intracellular periodic acid-Schiff-positive substances in the antral mucosa were examined in biopsy specimens.
  
  
  RESULTS
  Although gastric emptying was significantly prolonged in the patients with non-ulcerative dyspepsia compared with the control group (P < 0.01), there was no difference in gastric emptying between H. pylori-positive and -negative patients, with all patients showing significantly less gastric emptying than the control group. The H. pylori eradication rate was 58% (11 out of 19) and gastric emptying improved significantly in seven patients whose infection was eradicated and whose dyspeptic symptoms disappeared. The ammonia concentration in gastric juice, inflammatory changes in the gastric mucosa and the index of periodic acid-Schiff-positive substances improved significantly when H. pylori was successfully eradicated compared with patients in whom eradication was unsuccessful. As gut hormones may affect gastroduodenal motility associated with H. pylori infection, we also studied the levels of serum gastrin and cholecystokinin. In the patients whose infection was eradicated, serum gastrin decreased significantly, but the cholecystokinin level did not change significantly, although there was a non-significant trend for cholecystokinin to increase.
  
  
  CONCLUSIONS
  These results suggest that delayed gastric emptying is partly associated with H. pylori infection and that the infection may contribute to the development of non-ulcerative dyspepsia.
authors.affiliation: Second Department of Internal Medicine, Oita Medical University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Murakami
authors.forename: T
authors.initials: T
authors.lastname: Fujioka
authors.forename: K
authors.initials: K
authors.lastname: Shiota
authors.forename: A
authors.initials: A
authors.lastname: Ito
authors.forename: K
authors.initials: K
authors.lastname: Fujiyama
authors.forename: R
authors.initials: R
authors.lastname: Kodama
authors.forename: Y
authors.initials: Y
authors.lastname: Kawasaki
authors.forename: T
authors.initials: T
authors.lastname: Kubota
authors.forename: M
authors.initials: M
authors.lastname: Nasu
mesh_terms: D000328:Adult; D000368:Aged; D000658:Amoxicillin / Q000627:therapeutic use; D002766:Cholecystokinin / Q000097:blood; D004415:Dyspepsia / Q000097:blood / Q000188:drug therapy / Q000382:microbiology / Q000503:physiopathology*; D005260:Female; D005746:Gastric Emptying / Q000502:physiology*; D005755:Gastrins / Q000097:blood; D005756:Gastritis / Q000097:blood / Q000188:drug therapy / Q000382:microbiology / Q000503:physiopathology*; D016481:Helicobacter Infections / Q000097:blood / Q000188:drug therapy / Q000382:microbiology / Q000503:physiopathology*; D016480:Helicobacter pylori / Q000187:drug effects / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010406:Penicillins / Q000627:therapeutic use
chemical_list: D005755:Gastrins; D010406:Penicillins; D000658:Amoxicillin; D002766:Cholecystokinin