The virulence markers of Salmonella enterica serovar Typhimurium. Different phage-type strains isolated in Slovakia
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
16681151
DOI
10.1007/bf02931441
Knihovny.cz E-resources
- MeSH
- Bacterial Adhesion MeSH
- Enterotoxins genetics MeSH
- Bacteriophage Typing * MeSH
- Hydrophobic and Hydrophilic Interactions MeSH
- Humans MeSH
- Plasmids genetics MeSH
- Movement MeSH
- Polymerase Chain Reaction methods MeSH
- Salmonella typhimurium classification genetics isolation & purification pathogenicity MeSH
- Siderophores genetics MeSH
- Virulence genetics MeSH
- Animals MeSH
- Check Tag
- Humans MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Geographicals
- Slovakia MeSH
- Names of Substances
- Enterotoxins MeSH
- Siderophores MeSH
Phage-typing determination of cell-surface hydrophobicity, motility, and serovar-specific virulence plasmid was performed in a collection of 154 clinical isolates of S. enterica serovar Typhimurium (SeT) isolated in Slovakia. All isolates were also examined in PCR for the presence of both stn (enterotoxin) and iroB (siderophore) genes. The DT104 was the definitive phage type most frequently identified (37.7 %), the second most frequently isolated phage type was DT41 (5.8 %); the occurrence of other phage types was not epidemiologically significant. On the basis of virulence-marker investigation, 46.1 % of isolates were hydrophobic in the assay of bacterial adherence to xylene, and 97.4 % were hydrophobic in salt-aggregation test. Motility of more than 50 mm was expressed by 20.8 % isolates. The serovar-specific 90-kb virulence plasmid was contained in 138 (89.6 %) of isolates. All SeT isolates were found (according to PCR) to carry the Salmonella-enterotoxin (stn) gene and the siderophore (iroB) gene. The increasing incidence of SeT DT104 human strains in Slovakia requires continuous attention; this can be markedly improved by surveillance efficiency and made possible by determining relationships between sporadic isolates.
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