Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

MODIFICATION OF BIOLOGICAL PROPERTIES OF ENTEROCOCCI UNDER THE CONDITIONS OF INTERMICROBIAL INTERACTION WITH PROTOZOAN BLASTOCYSTIS

Bugero N.V. 1 Potaturkina-Nesterova N.I. 2
1 Federal State Budgetary Educational Institution of Higher Professional Education UlGPU named after I. N. Ulyanov
2 Federal State Budgetary Educational Institution of Higher Professional Education
Enterococci being a component of normal microflora of human digestive tract take on enormous importance in provision of colonization resistance of the mucosa. At the same time they are representatives of the group of opportunistic pathogenic bacteria, which can cause autoinfection, and in case of accumulation in an environment - can result in exogenous infection. The work contains the results of modification of biological properties of enterococci under the conditions of intermicrobial interaction with protozoan blastocystis. It was demonstrated that being a component of intestinal microbiocenosis at blastocystis invasion two enterococci species were isolated: E.faecium and E.faecalis. Most frequent in the culture was E.faecalis, it was isolated in 61,38 ±1,2% of cases (255 strains). An intensification of virulence of Blastocystis spp. has resulted in statistically significant intestinal bacterization with E.faecalis strains. Their colonization value has changed from lg 2,1±0,3 to lg 8,6±0,3 CFU/g. During the studies of persistent activity (ALA, ALFa and AGA) of E.faecalis strains, the most intense was ALfA of the strains, it was detected in 96,66±7,3 % of cases.