Fachbereich Veterinärmedizin



    Arcobacter butzleri isolates exhibit pathogenic potential in intestinal epithelial cell models (2016)

    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Karadas, G. (WE 8)
    Bücker, R.
    Sharbati, S. (WE 3)
    Schulzke, J.D.
    Alter, T. (WE 8)
    Gölz, G. (WE 8)
    Journal of Applied Microbiology; 120(1) — S. 218–225
    ISSN: 1364-5072
    DOI: 10.1111/jam.12979
    Pubmed: 26481610
    Institut für Lebensmittelsicherheit und -hygiene

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    Abstract / Zusammenfassung

    AIMS: The pathogenic potential of Arcobacter butzleri isolates on human (HT-29/B6) and porcine epithelial (IPEC-J2) cells was investigated by in vitro assays.

    METHODS AND RESULTS: Five of six A. butzleri isolates were able to adhere and invade HT-29/B6 cells while only four isolates adhered and two invaded IPEC-J2 cells. Two non- or poorly invasive A. butzleri isolates were highly cytotoxic to differentiated HT-29/B6 cells but none to IPEC-J2 cells as determined by WST-assays. Epithelial integrity of cell monolayers, monitored by measurement of the transepithelial electrical resistance (TER), was decreased by all A. butzleri isolates in HT-29/B6 and IPEC-J2 cells to 30-15% and 90-50% respectively.

    CONCLUSION: The A. butzleri strain-specific pathomechanisms observed with the human colon cell line HT-29/B6, like adhesion, invasion and cytotoxicity might all contribute to epithelial barrier dysfunction, which could explain a leak-flux type of diarrhoea in humans. In contrast, porcine cells seem to be less susceptible to A. butzleri.

    SIGNIFICANCE AND IMPACT OF THE STUDY: Arcobacter butzleri has enteric pathogenic potential, characterized by defined interactions with human epithelial cells and strain-specific pathomechanisms.