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Prevalence, virulence determinants, and genetic diversity in Yersinia enterocolitica isolated from slaughtered pigs and pig carcasses.
Int J Food Microbiol
September 2022
Institute of Food Safety, Animal Health and Environment BIOR, LV-1076 Rīga, Latvia.
Yersinia enterocolitica is an important zoonotic foodborne pathogen that could be transferred from infected pigs to their carcasses at slaughter, with subsequent introduction of the pathogen into the food chain. The aim of the present study was to study the prevalence, virulence characteristics, and genetic diversity of Y. enterocolitica isolates present in slaughtered pig tonsils and carcasses by using the WGS approach.
View Article and Find Full Text PDFA multi-omic systems approach to elucidating Yersinia virulence mechanisms.
Mol Biosyst
January 2013
Biological Sciences Division, Pacific Northwest National Laboratory, P. O. Box 999, Richland, WA 99352, USA.
Article Synopsis
- The study compares the closely related pathogens Yersinia pestis (YP) and Yersinia pseudotuberculosis (YPT), both of which have similar genomes but different mortality rates.
- Through a multi-omic analysis at relevant temperatures, it was found that YP shows higher expression levels of key virulence factors compared to YPT, suggesting that regulatory changes and unique genes contribute to YP's increased pathogenicity.
- The research also used global transcriptome and proteome data along with computational network analysis to identify potential new virulence factors in Yersinia based on their expression patterns.
Biofilm development on Caenorhabditis elegans by Yersinia is facilitated by quorum sensing-dependent repression of type III secretion.
PLoS Pathog
January 2011
School of Molecular Medical Sciences, Centre for Biomolecular Science, University of Nottingham, Nottingham, United Kingdom.
Yersinia pseudotuberculosis forms biofilms on Caenorhabditis elegans which block nematode feeding. This genetically amenable host-pathogen model has important implications for biofilm development on living, motile surfaces. Here we show that Y.
View Article and Find Full Text PDFCharacterization of the ysa pathogenicity locus in the chromosome of Yersinia enterocolitica and phylogeny analysis of type III secretion systems.
J Mol Evol
July 2002
Microbial Pathogenesis Unit, Christian de Duve Institute of Cellular Pathology and Faculté de Médecine, Université Catholique de Louvain, Belgium.
Several Gram negative bacteria use a complex system called "type III secretion system" (TTSS) to engage their host. The archetype of TTSS is the plasmid-encoded "Yop virulon" shared by the three species of pathogenic Yersinia (Y. pestis, Y.
View Article and Find Full Text PDF[The relationship of plasmids from environmental Yersinia isolates and the virulence plasmid of enteropathogenic Yersinia strains].
Berl Munch Tierarztl Wochenschr
October 2002
Robert Koch-Institut Berlin, Projekt Horizontaler Gentransfer, Nordufer 20, D-13353 Berlin.
The human pathogenic strains of Yersinia harbour a conserved plasmid carrying the Yop virulon. The virulence plasmid of Yersinia enterocolitica strains belonging to the serogroups O:3 and O:9 were used as probes to detect homologous sequences in plasmids of "avirulent" Yersinia strains. "Avirulent" Yersinia strains (Y.
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