[Characteristics of collagen metabolism in duodenal ulcer].

We studied the content of collagen metabolites in patients with duodenal ulcer (blood plasma, urea, and samples of the duodenal mucous tunic and mouth fluid). We also defined the role of an affected collagen metabolism in the formation and cicatrization of duodenal ulcer; finally, we ascertained that the nature of the detected changes in different biological substrate is unidirectional.