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[Group D streptococci and enterococci: identification, sensitivity to antibiotics and a study of the high level resistance to aminosides (Charles Nicolle Hospital in Tunis)].

197 strains of enterococcus and group D Streptococcus were isolated from human material at Charles Nicolle Hospital (Tunis) and identified by biochemical tests: 174, Enterococcus faecalis, 6 Enterococcus faecium, 2 Enterococcus durans and 15 Streptococcus bovis. The sensitivity to antibiotics was studied: all Enterococcus faecium were resistant at least to one antibiotic, 15% of Enterococcus faecalis were sensitive for all antibiotics tested the other species were frequently sensitive. High level resistance to aminoglycosides were frequent in Enterococcus faecalis 40%: among these strains high level resistance to gentamicin accounts for 12% and 18 frequently associated with resistance to kanamycin and streptomycin, this situation present therapeutic problems in case of severe infection.

Aminoglycosides↗
PubMed1989

[The effect of enterococci on normalizing the intestinal microflora in experimental dysbacteriosis].

The normal microflora of the intestine produces essential influence on the vital activity of the host. The exposure of the body to the action of different unfavorable factors (roentgen radiation, the administration of antibiotics, Salmonella infection, etc) results in changes in the normal microflora of the gastrointestinal tract. This work was aimed at the study of the influence of Streptococcus faecium YDC-48 on the intestinal microflora of mice in experimental (chemotherapeutic, postirradiation) dysbacteriosis and Salmonella infection. The effect of the oral administration of S. faecium YDC-48 on the correction of the intestinal microflora of mice in cases of dysbacteriosis etiology was studied. The intragastric administration of S. faecium YDC-48 was found to induce an increase in the level of lactobacterin and a decrease in the number of opportunistic microorganisms in chemotherapeutic and postirradiation dysbacteriosis. The oral administration of S. faecium YDC-48 decreased the manifestations of intestinal dysbacteriosis in experimental Salmonella infection. The possibility of developing a preparation on the basis of S. faecium YDC-48, a representative of normal intestinal microflora, is discussed.

Ampicillin↗
PubMed1989

[Influence of enterococci on the recovery of intestinal microflora changed by antibiotic therapy and carbohydrate nutrition].

The process of intestinal microflora normalization after a course of antibiotic therapy was studied on mice and in persons with using S. faecium UDS-86. It was shown that oral inoculation of strain UDS-86 influenced correction of the intestinal microflora in the mice and persons after the antibiotic therapy and carbohydrate nutrition. Oral inoculation of S. faecium UDS-86 resulted in lower quantities of potentially pathogenic organisms and higher levels of lactobacteria in the intestine at the background of dysbacteriosis induced by the antibiotic therapy and carbohydrate nutrition. Possible development of a preparation, eubiotic based on S. faecium UDS-86 is discussed.

Animals↗
PubMed1986

Susceptibility of enterococci. I. Inhibitory and bactericidal activity of several chemoantibiotics against Streptococcus faecalis and Streptococcus faecium.

The authors present a microbiological study of 100 strains of Enterococcus (70 strains of Streptococcus faecalis and 30 strains of Streptococcus faecium) tested for susceptibility to the following antibiotics, amoxicillin, ampicillin + flucloxacillin, piperacillin, rifampicin, vancomycin, netilmicin, ofloxacin, and norfloxacin. The assessment of minimum inhibitory and minimum bactericidal concentrations of these substances indicates that all have good inhibitory activity except netilmicin, which is active at higher concentrations; with rifampicin and vancomycin showing very poor bactericidal activity. The bactericidal activity of penicillins was hard to assess because of tolerance and paradoxical effect phenomena. The quinolones showed good inhibitory and bactericidal activity.

Anti-Bacterial Agents↗
PubMed1986

Susceptibility of enterococci. II. Inhibitory and bactericidal activity of drugs in combination against Streptococcus faecalis and Streptococcus faecium.

The microbiological utility of antibiotic combinations against Streptococcus faecalis and Streptococcus faecium strains was studied. The drugs used were netilmicin + amoxicillin (20 strains); netilmicin + piperacillin (20 strains); netilmicin- + vancomycin (20 strains); netilmicin + rifampicin (20 strains). Netilmicin used in combination with the penicillins was advantageous against Streptococcus faecalis, but not uniformly against Streptococcus faecium. The combinations of netilmicin with vancomycin or rifampicin were no more effective than the single drugs in most cases, although the response varied for the different strains of the two species.

Anti-Bacterial Agents↗