title: Prevalence of Campylobacter pylori as demonstrated by histology or CLO-test in different types of gastritis. A study in 5 clinically predefined groups of patients.
abstract: The prevalence of Campylobacter pylori infection as detected by histology was studied in 5 predefined groups of patients. The associated histologic and endoscopic findings were registered. Validity of CLO-test was tested against the histologic detection. The following groups of patients were studied: A) Non-ulcer dyspepsia (defined by one or all of three symptoms: heartburn, nausea/inappetence, halitosis/belching) B) control group (no specific symptoms, no ulcer, no history of gastric surgery) C) Duodenal ulcer D) Gastric ulcer E) Billroth I or II resection of the stomach. 200 patients were recruited for group A-C, in group D 134 patients and in group E 113 patients were studied. A mean prevalence of 60% was observed. Prevalence was highest in patients with duodenal ulcer (86%). In group D a prevalence of 65%, in A and E a prevalence of 54%, and in B of 40% were seen. The overall test sensitivity of the CLO-test compared against the histologic detection rate was 75%, the specificity 81%. Sensitivity was reduced in group A (69%) and E (53%) and in patients with inactive chronic gastritis (67%). In all groups patients with active forms of gastritis showed the highest prevalence of C. pylori infection. The specificity of the CLO-test was reduced in patients with duodenal ulcer (46%) and gastric ulcer (48%). Decreased specificity observed after therapy with histamin receptor (H2) blockers may explain this finding. The relationship of C. pylori infection with active types of gastritis or gastro-duodenal ulcer hints at a causal relation but is no definite proof of its etiologic role. The validity of the CLO-test seems questionable in patients with gastroduodenal ulcer or operated stomach.
authors.affiliation: Gemeinschaftspraxis für Pathologie, Freiburg, FRG.
authors.forename: H K
authors.initials: HK
authors.lastname: Koch
authors.forename: B
authors.initials: B
authors.lastname: Baumert
authors.forename: U
authors.initials: U
authors.lastname: Koch
authors.forename: M
authors.initials: M
authors.lastname: Oehlert
authors.forename: W
authors.initials: W
authors.lastname: Oehlert
mesh_terms: D000863:Antacids / Q000494:pharmacology; D000932:Antiemetics / Q000494:pharmacology; D002169:Campylobacter Infections / Q000150:complications* / Q000453:epidemiology / Q000473:pathology; D015331:Cohort Studies; D005069:Evaluation Studies as Topic; D005260:Female; D005756:Gastritis / Q000150:complications* / Q000188:drug therapy / Q000473:pathology; D006635:Histamine H2 Antagonists / Q000494:pharmacology; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011933:Reagent Kits, Diagnostic; D012680:Sensitivity and Specificity
chemical_list: D000863:Antacids; D000932:Antiemetics; D006635:Histamine H2 Antagonists; D011933:Reagent Kits, Diagnostic