[The pepsinogen-pepsin system in gastroduodenal pathology in children].

The changes in the pepsinogen pepsin system reflect the degree of morphological alterations in the gastric mucosa. Based on the results of examining 98 children suffering from gastroduodenal diseases, the possibility is shown of distinguishing genetic and biochemical markers of duodenal ulcer. The characteristic features of the isoenzymic spectrum of pepsinogen-pepsin in different gastroduodenal diseases are demonstrated.