title: Effect of non-steroidal anti-inflammatory drugs on gastric and duodenal prostaglandin concentrations in patients with Helicobacter pylori infection.
abstract: OBJECTIVE
  Both Helicobacter pylori and non-steroidal anti-inflammatory drugs are reported to affect gastroduodenal prostaglandin synthesis. However, their influence on gastric mucosal prostaglandins remains unclear. The aim of this study was to investigate the influence of nonsteroidal anti-inflammatory drugs on mucosal prostaglandin synthesis in patients with Helicobacter pylori infection.
  
  
  METHODS
  We enrolled 87 Helicobacter pylori-infected patients in this study (gastric ulcer: 33, duodenal ulcer: 41, and non-ulcer dyspepsia: 13). Of them, 27 patients received non-steroidal anti-inflammatory drugs. Endoscopy was performed and biospy specimens from gastric body, antrum and duodenal bulb were assessed for Helicobacter pylori and prostaglandin concentration.
  
  
  RESULTS
  A significantly lower mucosal prostaglandin E2 level at gastric body (142.2 +/- 28.1 ng/mg vs. 222.0 +/- 12.4 ng/mg, mean +/- SEM) and antrum (131.3 +/- 26.4 ng/mg vs. 226.0 +/- 19.0 ng/mg) was noted in Helicobacter pylori-infected gastric ulcer patients with non-steroidal anti-inflammatory drugs ingestion than in that of patients without non-steroidal anti-inflammatory drugs ingestion (p < 0.05). Using a multivariate analysis, we found that non-steroidal anti-inflammatory drug was an independent variable affecting gastric and duodenal mucosal prostaglandin E2 synthesis in patients with Helicobacter pylori-infected gastric ulcer.
  
  
  CONCLUSIONS
  Non-steroidal anti-inflammatory drugs decrease gastroduodenal mucosal prostaglandin E2 synthesis in gastric ulcer patients with Helicobacter pylori infection.
authors.affiliation: Department of Medicine, Veterans General Hospital-Taipei, Taiwan, R.O.C.
authors.forename: G Y
authors.initials: GY
authors.lastname: Tseng
authors.forename: H J
authors.initials: HJ
authors.lastname: Lin
authors.forename: H Y
authors.initials: HY
authors.lastname: Lin
authors.forename: C L
authors.initials: CL
authors.lastname: Perng
authors.forename: F Y
authors.initials: FY
authors.lastname: Lee
authors.forename: W C
authors.initials: WC
authors.lastname: Lo
authors.forename: S H
authors.initials: SH
authors.lastname: Tsay
authors.forename: A S
authors.initials: AS
authors.lastname: Li
authors.forename: F Y
authors.initials: FY
authors.lastname: Chang
authors.forename: S D
authors.initials: SD
authors.lastname: Lee
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology*; D015232:Dinoprostone / Q000032:analysis; D004379:Duodenal Neoplasms / Q000473:pathology*; D004415:Dyspepsia / Q000473:pathology*; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology; D016481:Helicobacter Infections / Q000473:pathology*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged; D011453:Prostaglandins / Q000032:analysis*; D013274:Stomach Neoplasms / Q000473:pathology*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D011453:Prostaglandins; D015232:Dinoprostone