[The anti-ulcer action of zinc sulfate in models of acute and chronic ulcerogenesis in the rat duodenum].

The 5-day pretreatment of rats with zinc sulfate (50 or 150 mg/kg/day per os) significantly reduce the rate, the number, and area of cystamine-induced duodenal lesions in rats. Pretreatment with zinc sulfate in a dose of 15 mg/kg/day over a 5-day period or single administration of zinc sulfate (50 mg/kg) did not markedly reduce the above-mentioned lesion parameters. The administration of zinc sulfate (50 or 150 mg/kg/day per os) during 7 days results in a dose-dependent, significant decrease in the area of chronic acetate-induced gastric and duodenal lesions in rats.

[Zinc metabolism in duodenal ulcer].

Zinc concentrations were measured in blood and gastroduodenal mucosa of patients with duodenal ulcer in remission and exacerbation. These were found reduced in plasma but elevated in gastroduodenal mucosa. Healing of the ulcer lesion was associated with positive shifts in zinc metabolism which recovered normal values in ulcer remission.

[Anthropogenic factors of the environment and the problem of health].

The literature and author's own data on the influence of the anthropogenic chemical factors of environmental pollution on the human organism are discussed. Detection of latent preclinical changes in the human organism subjected to anthropogenic and environmental exposures is shown to be of great significance for health promotion. Prevention measures aimed at improving the environmental and health status of people are considered.