Enterococcus faecalis and Candida albicans in the dental root canal and periapical infections.

Objective: The aim of the present study was to examine the prevalence of Enterococcus faecalis and Candida albicans in endodontic infections.

Methods: Samples for microbiological examination were collected from 32 patients with deep dental caries, infected dental root canal, or periapical infection.

Results: Cultivation of the dental samples yielded four strains of Enterococcus faecalis (12.

[Susceptibility of Staphylococcus aureus biofilms to vancomycin, gemtamicin and rifampin].

Study Objectives: To detect biofilm formation in Staphylococcus aureus strains and to determine the minimal biofilm inhibition concentrations (MBIC) and the minimal biofilm eradicating concentrations (MBEC) of vancomycin, gentamicin and rifampin. To compare the MBIC and MBEC with the minimal inhibition concentration (MIC) and minimal bactericidal concentration (MBC) data for planktonic Staphylococcus aureus forms that are commonly used in antimicrobial susceptibility testing for the purposes of individualized therapy.

Patients And Methods: Fifteen S.

Clinical pseudomonas aeruginosa: potential factors of pathogenicity and resistance to antimicrobials.

Resistance to 17 antimicrobials, surface hydrophobicity, motility, biofilm, production of N-acylhomoserine lactone signal molecules (N-butyrylhomoserine lactone and N-3-oxolauroylhomoserine lactone) and response to oxidative stress were analyzed in 47 clinical Pseudomonas aeruginosa strains. In addition to natural resistance, the strains demonstrated the greatest level of resistance to cefotaxime (91.5%).

Hemolytic uremic syndrome caused by verotoxin-producing Escherichia coli O26. Case report.

Verotoxin-producing Escherichia coli (VTEC) are nowadays among the most important emerging group of food-borne pathogens (VTEC strains cause gastroenteritis that can be complicated by the hemorrhagic colitis or hemolytic uremic syndrome, HUS). Escherichia coli 026 producing verotoxin 2 was isolated and its identity confirmed by examination of phenotype and genotype; the strain was first described in Slovakia in association with the development of HUS in a 4-year-old girl.

Antimicrobial activity of Mahonia aquifolium crude extract and its major isolated alkaloids.

The crude extract of Mahonia aquifolium (Pursh) Nutt. stem bark and its two main protoberberine alkaloids, berberine and jatrorrhizine, were tested for their in vitro antimicrobial activity. Twenty strains of coagulase-negative staphylococci and 20 strains of Propionibacterium acnes isolated from skin lesions of patients with a severe form of acne, and 20 strains of Candida sp.