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[Clinico-pathogenetic aspects of peptic ulcer in children].

Overall 98 children with duodenal ulcer were examined. It is shown that the rise of the products of lipid peroxidation in gastric juice enhances the aggressive properties of gastric juice and stimulates defence reactions of the gastric mucosa and duodenum. Lipid oxidation and the antioxidant systems of gastric juice were discovered to be disordered. The changes thus revealed are of diagnostic importance for detecting the recurrent nature of the disease.