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Molecular Screening of Virulence Genes in Extraintestinal Pathogenic Escherichia coli Isolated from Human Blood Culture in Brazil
Joint Authors
Cyoia, Paula S.
Vidotto, Marilda C.
Kobayashi, Renata K. T.
Nakazato, Gerson
Neves, Meiriele S.
Tomazetto, Geizecler
Koga, Vanessa L.
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-15
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Extraintestinal pathogenic Escherichia coli (ExPEC) is one of the main etiological agents of bloodstream infections caused by Gram-negative bacilli.
In the present study, 20 E.
coli isolates from human hemocultures were characterized to identify genetic features associated with virulence (pathogenicity islands markers, phylogenetic group, virulence genes, plasmid profiles, and conjugative plasmids) and these results were compared with commensal isolates.
The most prevalent pathogenicity island, in strains from hemoculture, were PAI IV536, described by many researchers as a stable island in enterobacteria.
Among virulence genes, iutA gene was found more frequently and this gene enconding the aerobactin siderophore receptor.
According to the phylogenetic classification, group B2 was the most commonly found.
Additionally, through plasmid analysis, 14 isolates showed plasmids and 3 of these were shown to be conjugative.
Although in stool samples of healthy people the presence of commensal strains is common, human intestinal tract may serve as a reservoir for ExPEC.
American Psychological Association (APA)
Koga, Vanessa L.& Tomazetto, Geizecler& Cyoia, Paula S.& Neves, Meiriele S.& Vidotto, Marilda C.& Nakazato, Gerson…[et al.]. 2014. Molecular Screening of Virulence Genes in Extraintestinal Pathogenic Escherichia coli Isolated from Human Blood Culture in Brazil. BioMed Research International،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-473697
Modern Language Association (MLA)
Koga, Vanessa L.…[et al.]. Molecular Screening of Virulence Genes in Extraintestinal Pathogenic Escherichia coli Isolated from Human Blood Culture in Brazil. BioMed Research International No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-473697
American Medical Association (AMA)
Koga, Vanessa L.& Tomazetto, Geizecler& Cyoia, Paula S.& Neves, Meiriele S.& Vidotto, Marilda C.& Nakazato, Gerson…[et al.]. Molecular Screening of Virulence Genes in Extraintestinal Pathogenic Escherichia coli Isolated from Human Blood Culture in Brazil. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-473697
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-473697