Gastritis and Helicobacter pylori: forty years of antibiotic therapy.

Helicobacter pylori has now been propelled into the forefront of gastroenterology, particularly the treatment of gastroduodenal ulcer, whereas its role in gastritis is still widely ignored, although this disease sparked much of the original observations. Forty years ago, it was shown for the first time that antibiotics can eliminate gastric ammonia production in man which suggested that this was due to eradication of bacterial urease activity. It was also found that the gastric juice ammonia concentration correlates with hypo- or anacidity in uremics and with mucosal inflammation in subjects with gastritis. In patients with nonalcoholic and alcoholic gastritis, the histology as well as the symptoms of gastritis were strikingly improved by antibiotic treatment. Beneficial effects of eradication of gastric urease activity and the resulting decreased ammonia production were also shown in patients with hepatic encephalopathy. Broader studies and clinical applications of these earlier findings are now warranted.