Enterococcus faecium L-3 in Eradication of Helicobacter pylori: In-vivo and In-vitro

Abstract

Usage of probiotics as component of anti-helicobacter therapy had been recently approved as a promising trend in the clinical practice. Over the years, we observed high efficacy of probiotic multi bacteriocinogenic strain Enterococcus faecium L-3 as an additional component of the standard triple therapy in eradication of Helicobacter pylori (H.p.) in patients with chronic gastritis associated with H. pylori infection. The cultivation of H.p. in the presence of live probiotic cultures of E. faecium L-3, Escherichia coli M17, Lactobacillus plantarum 8R-A3 showed superior antagonistic activity of enterococci relatively to other tested bacteria. The anti-helicobacter activity of chemically synthesized enterococcal bacteriocins EntB and Enxβ were studied using 6 strains of H. pylori. The strain-specific action of synthetic enterocins used was determined. Testing of sensitivity of H. pylori. to probiotics and their metabolites in vitro would be important for the selection and prediction of the clinical effectiveness of probiotics as well as development of new anti-helicobacter drugs and lines of combined therapies based on enterocins.