[Particular features of the relationship of Helicobacter pylori and G cells in patients with duodenal ulcer, with special reference to the Helicobacter pylori strain].

Helicobacter pylori positive form of duodenal ulcer (CagA+ and CagA-) was studied in 120 patients with duodenal ulcer (DU). CagA+ was found in 78 patients (65%); CagA(-)--in 42 (35%). Diagnostic criteria of symbiosis between Helicobacter pylori and macroorganisms have been established.

[The role of immune links in the gastric acid-forming function in peptic ulcer patients].

Results are of a comparative analysis of immunological and biochemical parameters in 116 patients with duodenal ulcer before operative treatment and in the follow-up (1-3 years) after different types of vagotomy. A close relationship has been established between the immune and neurohumoral links of regulation and state of the acid forming gastric function in patients with ulcer disease.