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Masoud-Landgraf, L; Johler, S; Badura, A; Feierl, G; Luxner, J; Wagner-Eibel, U; Eber, E; Zarfel, G; Grisold, AJ.
Genetic and Phenotypic Characteristics of Staphylococcus aureus Isolates from Cystic Fibrosis Patients in Austria.
Respiration. 2015; 89(5):390-395 [OPEN ACCESS]
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Autor/innen der Med Uni Graz:
Badura Alexandra
Eber Ernst
Feierl Gebhard
Grisold Andrea
Luxner Josefa
Masoud-Landgraf Lilian
Wagner-Eibel Ute
Zarfel Gernot
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Abstract:
Cystic fibrosis (CF) is the most common life-limiting inherited disease in Caucasian populations. While pathological changes can be seen in various organs, morbidity and mortality are mainly related to the respiratory tract, with patients suffering from chronic bronchopulmonary infections with characteristic pathogens including Staphylococcus aureus. To date, there is only very limited data on the genetic and phenotypic characteristics of S. aureus in CF patients. Therefore, in our study, we characterized 58 S. aureus isolates collected from CF patients in Austria by spa typing, DNA microarray profiling, as well as antimicrobial susceptibility testing in order to determine common genomic and antimicrobial resistance features. The tested strain collection exhibited high genomic diversity. The 58 isolates were assigned to 16 clonal complexes and 48 spa types and differed greatly regarding their virulence and resistance gene profiles. The predominant clonal complexes were MLST CC30 (22%), CC15 (16%), CC45 (14%), and CC5 (12%), complexes that are highly prevalent worldwide among S. aureus strains isolated from humans colonized or infected with S. aureus. DNA microarray profiles showed a wide variety of genes encoding antimicrobial resistance and virulence factors such as various leukocidins, haemolysins, enterotoxins, exfoliative toxins, toxic shock syndrome toxin, as well as genes involved in adhesion and immune evasion. While a large number of strains exhibited resistance to one or several antimicrobial agents, methicillin-resistant S. aureus was found at a low prevalence of 3% (n = 2) only. The two methicillin-resistant S. aureus isolates were assigned to CC152/t355 (SCCmecV) and CC5/t001 (SCCmecI). This is the first study to genetically characterize S. aureus isolates in CF patients in Austria. © 2015 S. Karger AG, Basel.
Find related publications in this database (using NLM MeSH Indexing)
Bacterial Toxins - genetics
Bacterial Typing Techniques -
Cystic Fibrosis - microbiology
DNA, Bacterial - genetics
Drug Resistance, Multiple, Bacterial - genetics
Enterotoxins - genetics
Genotype -
Humans -
Oligonucleotide Array Sequence Analysis -
Phenotype -
Staphylococcus aureus - genetics
Staphylococcus aureus - pathogenicity
Virulence -

Find related publications in this database (Keywords)
Staphylococcus aureus
Cystic fibrosis
spa typing
Antimicrobial resistance
Virulence genes
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