Characterization of four Escherichia albertii isolates collected from animals living in Antarctica and Patagonia

Escherichia albertii is a recently discovered species with a limited number of well characterized strains. The aim of this study was to characterize four of the E. albertii strains, which were among 41 identified Escherichia strains isolated from the feces of living animals on James Ross Island, Ant...

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Bibliographic Details
Published in:Journal of Veterinary Medical Science
Main Authors: GRILLOVÁ, Linda, SEDLÁČEK, Ivo, PÁCHNÍKOVÁ, Gabriela, STAŇKOVÁ, Eva, ŠVEC, Pavel, HOLOCHOVÁ, Pavla, MICENKOVÁ, Lenka, BOSÁK, Juraj, SLANINOVÁ, Iva, ŠMAJS, David
Format: Text
Language:English
Published: The Japanese Society of Veterinary Science 2017
Subjects:
Bacteriology
Patagonia
Ross Island
Antarc*
Antarctica
James Ross Island
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5797873/
http://www.ncbi.nlm.nih.gov/pubmed/29249728
https://doi.org/10.1292/jvms.17-0492
Description
Summary:Escherichia albertii is a recently discovered species with a limited number of well characterized strains. The aim of this study was to characterize four of the E. albertii strains, which were among 41 identified Escherichia strains isolated from the feces of living animals on James Ross Island, Antarctica, and Isla Magdalena, Patagonia. Sequencing of 16S rDNA, automated ribotyping, and rep-PCR were used to identify the four E. albertii isolates. Phylogenetic analyses based on multi-locus sequence typing showed these isolates to be genetically most similar to the members of E. albertii phylogroup G3. These isolates encoded several virulence factors including those, which are characteristic of E. albertii (cytolethal distending toxin and intimin) as well as bacteriocin determinants that typically have a very low prevalence in E. coli strains (D, E7). Moreover, E. albertii protein extracts caused cell cycle arrest in human cell line A375, probably because of cytolethal distending toxin activity.

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