[Colonic microenvironment in familial helicobacter infection].

To elucidate the significance of the familial microenvironment in the genesis of Helicobacter infection, a clinical and instrumental investigation was made of 13 families selected by the probands who had digestive diseases associated with H. pylori: gastroduodenitis and duodenal ulcer disease. The occurrence of Helicobacter infection and gastritis in the family members was ascertained to be largely determined by their concurrent residence in the limited area, i.e. by the way of life. The contribution of the "family" factor in antral gastritis, fundal gastritis, and H. pylori infection was 60.0, 40.0, and about 90.0%, respectively. The patients with gastroenterological abnormalities associated with H. pylori were found to show changes in the species-specific and quantitative composition of the colonic microbiocenosis, which were symptomatic and revealed by bacteriological studies in 47.5% of cases and severe in 32.5%. When antihelicobacter therapy is planned, a through treatment of all family members and, if possible, pets should be made. Colonic microbiocenosis should be monitored while treating Helicobacter infection.