[Oxygen metabolism disturbances in the pathogenesis of gastric and duodenal diseases].

Oxygen metabolism disturbances are the pathogenetic factors of many diseases, including digestive tract diseases. Last time much attention was given to importance of active oxygen form, oxygen free radicals. Free radicals are one of the tissue aggressive factors and they are the pathogenic factor of gastritis and duodenitis, stress ulcer, gastric and duodenal ulcer disease and gastric cancer. In this paper the review of investigations of oxygen metabolism in gastric and duodenal diseases was presented.