Fachbereich Veterinärmedizin



    ExPEC-typical virulence-associated genes correlate with successful colonization by intestinal E. coli in a small piglet group (2008)

    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Schierack, Peter
    Walk, Nicole
    Ewers, Christa
    Wilking, Hendrik
    Steinrück, Hartmut
    Filter, Matthias
    Wieler, Lothar H
    Environmental microbiology; 10(7) — S. 1742–1751
    ISSN: 1462-2912
    DOI: 10.1111/j.1462-2920.2008.01595.x
    Pubmed: 18373678
    Institut für Mikrobiologie und Tierseuchen

    Robert-von-Ostertag-Str. 7-13
    Gebäude 35
    14163 Berlin
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    Abstract / Zusammenfassung

    Upon studying the transmission of Escherichia coli from a sow to five of her piglets, we observed domination of the coliform flora in piglets by a single E. coli clone, especially after weaning. This haemolytic cloneH1 did not harbour any virulence determinants typical for intestinal pathogenic E. coli isolates from swine but had a virulence gene profile very similar to extraintestinal E. coli (ExPEC), including genes coding for P fimbriae and several iron acquisition systems, besides having an affiliation to the phylogenetic B2 group. Overall, we show that the presence of higher numbers of ExPEC-typical virulence-associated genes (VAGs) in clones correlate with their successful colonization ability in piglets. We conclude that VAGs typical for ExPEC also support intestinal colonization in healthy pigs. Faeces of healthy domestic pigs can harbour high numbers of ExPEC-similar E. coli and are suggested to be a potential risk for the transmission of such bacteria to other hosts.