title: Helicobacter pylori infection, serum gastrin, and gastric acid secretion in teen-age subjects with duodenal ulcer, gastritis, or normal mucosa.
abstract: BACKGROUND
  Many studies have confirmed the close association of Helicobacter pylori with duodenal ulcer (DU) in adults. However, in the subtype of DU known as 'childhood' or 'early onset DU' genetic factors seem to play a prominent role in the pathogenesis. The aim of this study was to investigate the prevalence of H. pylori in teen-age subjects with DU, gastritis, and normal mucosa and to examine the relationship of H. pylori to serum gastrin levels and gastric acid secretion.
  
  
  METHODS
  Sixty-one teen-age subjects (24 with DU, 14 with gastritis, and 23 normal subjects) were investigated for the presence of H. pylori, antral histology, gastrin levels, basal acid output (BAO), and maximal acid output (MAO).
  
  
  RESULTS
  All 24 patients with DU and 8 of 14 with gastritis were infected with H. pylori; none of the normal subjects were infected. Mean gastritis scores and fasting serum gastrin levels were significantly higher in patients with DU or H. pylori-positive gastritis than in subjects with H. pylori-negative gastritis or normal mucosa (p < 0.05). The difference in serum gastrin levels was also significant when patients with DU were compared with those with H. pylori-positive gastritis (p < 0.05). BAO and MAO were significantly higher in patients with DU than in subjects with H. pylori-positive gastritis or normal mucosa (p < 0.05), but there was no difference between subjects with H. pylori-positive gastritis and those with normal mucosa.
  
  
  CONCLUSIONS
  H. pylori infection is associated closely with teen-age DU and gastritis and with hypergastrinemia but does not affect BAO and MAO in most infected teen-age subjects.
authors.affiliation: First Dept. of Internal Medicine, Hiroshima University School of Medicine, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Haruma
authors.forename: H
authors.initials: H
authors.lastname: Kawaguchi
authors.forename: K
authors.initials: K
authors.lastname: Kohmoto
authors.forename: S
authors.initials: S
authors.lastname: Okamoto
authors.forename: M
authors.initials: M
authors.lastname: Yoshihara
authors.forename: K
authors.initials: K
authors.lastname: Sumii
authors.forename: G
authors.initials: G
authors.lastname: Kajiyama
mesh_terms: D000293:Adolescent; D000328:Adult; D004381:Duodenal Ulcer / Q000097:blood / Q000209:etiology / Q000503:physiopathology*; D005260:Female; D005744:Gastric Acid / Q000378:metabolism*; D005753:Gastric Mucosa / Q000378:metabolism*; D005755:Gastrins / Q000097:blood*; D005756:Gastritis / Q000097:blood / Q000209:etiology / Q000503:physiopathology*; D016481:Helicobacter Infections / Q000150:complications / Q000453:epidemiology / Q000503:physiopathology*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D015995:Prevalence; D012189:Retrospective Studies
chemical_list: D005755:Gastrins