Virulence factors andin Vitro adherence ofEnterococcus strains to urinary catheters
| Autor: | Beata Sobieszczańska, E. Mróz, Ł. Wojciech, Ewa Dworniczek, R. Adamski, K. Kuzko, Alicja Seniuk |
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| Rok vydání: | 2003 |
| Předmět: |
Virulence
Strain (chemistry) biology Virulence Factors Hemolysin General Medicine In Vitro Techniques biochemical phenomena metabolism and nutrition biology.organism_classification Streptococcaceae Microbiology Bacterial Adhesion In vitro Catheters Indwelling Enterococcus Biofilms Enterococcus faecalis Microscopy Electron Scanning Gelatinase Urinary Catheterization Hydrophobic and Hydrophilic Interactions Bacteria |
| Zdroj: | Folia Microbiologica. 48:671-678 |
| ISSN: | 1874-9356 0015-5632 |
| DOI: | 10.1007/bf02993477 |
| Popis: | The ability to adhere in vitro to urinary catheters and the presence of enterococcal virulence factors was determined in 30 Enterococcus urinary isolates (12 E. faecalis, 12 E. faecium, 3 E. casseliflavus, 3 E. gallinarum). Silicone, siliconized latex and polyvinyl chloride (PVC) were examined by sonication quantitative culture technique and scanning electron microscope. As compared to E. faecalis and E. faecium, E. casseliflavus and E. gallinarum displayed lower adhesion to all synthetic materials. All the tests performed showed higher adherence of all tested strains to siliconized latex and silicone than to PVC. Biofilmforming ability was observed in 5 E. faecalis but in none of the remaining strains. The gene coding enterococcal surface protein (Esp) was detected in 7 E. faecalis and 6 E. faecium strains. Gelatinase was found in 1 E. faecalis, 2 E. faecium and hemolysins were found in 6 E. faecalis and 1 E. faecium strains. All E. casseliflavus and E. gallinarum strainswere negative for these traits. Hydrophobic type of cell surface (measured by its affinity for n-hexadecane) was shown in a few isolates. Bacterial adherence was not significantly associated with the above pathogenic factors. |
| Databáze: | OpenAIRE |
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