title: [Bicarbonate deficiency and duodenal peptic ulcer].
abstract: OBJECTIVE
  The study of alkaline gastric secretion in health and disease and its changes in response to blockers of H2-histamine receptors.
  
  
  METHODS
  The trial enrolled 74 patients with duodenal ulcer (DU), 28 patients with chronic gastric (CG) and 16 healthy controls. The secretion was studied initially, in administration of ranitidine, in stimulation with hydrochloric acid.
  
  
  RESULTS
  DU patients demonstrated a significant reduction of gastric secretion of bicarbonates in the basal and stimulated phases and a 3-fold decrease in the proportion alkaline/acid secretion. There was also a trend to acidosis. Administration of H2-histamine receptors provided recovery of acid-alkaline balance.
  
  
  CONCLUSIONS
  Bicarbonate deficiency is an important element of duodenal ulcer pathogenesis.
authors.forename: Iu S
authors.initials: IuS
authors.lastname: Malov
authors.forename: A N
authors.initials: AN
authors.lastname: Kulikov
mesh_terms: D000136:Acid-Base Equilibrium / Q000187:drug effects; D000328:Adult; D001639:Bicarbonates / Q000032:analysis / Q000378:metabolism*; D002908:Chronic Disease; D004381:Duodenal Ulcer / Q000188:drug therapy / Q000378:metabolism*; D015738:Famotidine / Q000494:pharmacology; D005260:Female; D005750:Gastric Juice / Q000737:chemistry / Q000187:drug effects; D005753:Gastric Mucosa / Q000187:drug effects / Q000378:metabolism; D005756:Gastritis / Q000188:drug therapy / Q000378:metabolism; D006635:Histamine H2 Antagonists / Q000494:pharmacology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008875:Middle Aged; D011899:Ranitidine / Q000494:pharmacology; D013270:Stomach / Q000187:drug effects
chemical_list: D001639:Bicarbonates; D006635:Histamine H2 Antagonists; D015738:Famotidine; D011899:Ranitidine