[Antioxidant components of erythrocytes and digestive secretions in childhood gastroduodenal diseases].

Enzymatic and nonenzymatic components of the antioxidant system were studied in the erythrocytes, saliva and gastric juice of 20 healthy volunteers, 113 children with chronic gastroduodenitis and duodenal ulcerous disease. A decrease in the activity of superoxide dismutase and imbalance of the glutathione redox system were found both in the erythrocytes and the digestive secrets of children with gastroduodenal pathology. The rate of impairments depended on the gastric functional state, on the nature of disease development; the most pronounced alterations were detected in the gastric juice.