title: H. pylori infection and reflux oesophagitis: a case-control study.
abstract: OBJECTIVE
  To examine the relationship between H. pylori and gastro-oesophageal reflux disease (GORD) in Iran.
  
  
  METHODS
  In this study 51 GORD patients (referred to endoscopy at Taleghani hospital) were compared with 49 age-sex matched controls. Diagnosis of H. pylori was made by gastric mucosal biopsy and rapid urease test (positive if the result of one or both diagnostic methods was positive). Updated Sydney system was used to report histopathological changes.
  
  
  RESULTS
  The frequency of H. pylori infection based on rapid urease test and histology was 88.2% (45) in patients and 77.6% (38) in controls, which showed no significant difference. The frequency of H. pylori infection was significantly higher in the antrum than in the corpus and cardia. The mean activity, inflammation, and gastritis scores were also higher in the antrum of patients than in the antrum of controls. The mean scores were significantly higher in the corpus of controls than in the corpus of patients. Diffuse active gastritis was observed in a significantly larger number of controls, while the frequency of diffuse chronic gastritis was higher in patients. There was no significant difference in the frequency of other histological findings between patients and controls.
  
  
  CONCLUSIONS
  H. pylori infection cannot prevent GORD in this region.
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, Golestan Hospital, Ahwaz Jundishapur University of Medical Sciences, PO Box 89, Ahwaz, Iran. ehajiani@ajums.ac.ir
authors.forename: Rahim
authors.initials: R
authors.lastname: Masjedizadeh
authors.forename: Eskandar
authors.initials: E
authors.lastname: Hajiani
authors.forename: Koorosh
authors.initials: K
authors.lastname: Moezardalan
authors.forename: Saeed
authors.initials: S
authors.lastname: Samie
authors.forename: Mohammad-Javad
authors.initials: MJ
authors.lastname: Ehsani-Ardakani
authors.forename: Ali
authors.initials: A
authors.lastname: Daneshmand
authors.forename: Mohammad-Reza
authors.initials: MR
authors.lastname: Zali
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002299:Cardia / Q000382:microbiology / Q000473:pathology; D016022:Case-Control Studies; D004942:Esophagitis, Peptic / Q000453:epidemiology / Q000382:microbiology* / Q000473:pathology; D004947:Esophagus / Q000382:microbiology* / Q000473:pathology; D005260:Female; D005753:Gastric Mucosa / Q000382:microbiology / Q000473:pathology; D016481:Helicobacter Infections / Q000150:complications* / Q000453:epidemiology / Q000473:pathology; D016480:Helicobacter pylori; D006801:Humans; D007492:Iran / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011706:Pyloric Antrum / Q000382:microbiology / Q000473:pathology