The virulence plasmid-borne genes encoding Yersinia adhesin A (YadA) and several Yersinia secreted proteins (Yops) are involved in the inhibition of phagocytosis and killing of Yersinia enterocolitica by human granulocytes. One of these Yops, YopH, dephosphorylates multiple tyrosine-phosphorylated proteins in eukaryotic cells and is involved in the inhibition of phagocytosis of Y. enterocolitic...

Thirteen different serogroup strains of Yersinia pseudotuberculosis and two strains of Yersinia enterocolitica O:3 were examined for the presence of plasmids and plasmid-mediated properties, calcium growth dependency, and autoagglutination. Two Y. enterocolitica strains and eight serogroup (IA, IIA, IIC, III, IVA, VB, VI, and VIII) strains, except for five serogroups (IB, IIB, IVB, VA, and VII)...

OBJECTIVE To analyze the impact of depletion of the twin arginine translocation (TAT) system on virulence and physiology of Yersinia enterocolitica for a better understanding of its pathogenicity. METHODS We constructed a DeltatatC::SpR mutant of Yersinia enterocolitica by P1 phage mediated transduction using Escherichia coli K-12 DeltatatC::SpR strain as a donor. RESULTS A P1-mediated gene...

Pathogenic Yersinia spp. counteract host defense mechanisms by modulating the cellular signal relay in response to infection. Subversion of the antiapoptotic NF-kappaB signaling pathway by the Yersinia enterocolitica virulence protein YopP crucially determines the induction of apoptosis in Yersinia-infected macrophages. Here, we analyzed a panel of pathogenic, phylogenetically distinct Y. enter...

Enteropathogenic species Yersinia pseudotuberculosis and enterocolitica are of great importance worldwide due to their ability survive preserve pathogenic properties in biotic abiotic environments. They can cause sporadic flare-up diseases. Therefore, it is extremely important use modern methods diagnosing diseases caused by these pathogens.
 The article analyzes the laboratory diagnostics...

During the last few years it has become apparent that human infections due to Yersinia enterocolitica (formerly Pasteurella X) are relatively common in several countries (Nilehn, 1969; Simond, 1970; Von Noyen, Vandepitte, and Isebaert, 1970). Patients with this bacterial infection have shown various symptoms, such as fever, diarrhoea, abdominal pain, colic, headache, backache, arthralgia, and e...

This study was performed to evaluate the antimicrobial pattern of isolates from raw cow milk and pork samples. A total of 150 (75 raw cow milk, 75 pork) samples were collected in and around Namakkal, Tamilnadu and were examined for the presence of Yersinia enterocolitica. Pork 29.3% (22/75) were significantly contaminated with Yersinia enterocolitica than raw cow milk samples.10.6%(8/75). Yersi...

Yersinia enterocolitica serotype O:9 has identical O-antigens to those of Brucella abortus and has apparently caused false-positive reactions in numerous brucellosis serologic tests in elk (Cervus canadensis) from southwest Montana. We investigated whether a similar phenomenon was occurring in brucellosis antibody-positive bison (Bison bison) using Y. enterocolitica culturing techniques and mul...

Pork products are a substantial source of human yersiniosis, a foodborne disease caused by Yersinia enterocolitica. Thus, the ability to eliminate this agent from pig herds would be an important step in producing human pathogen-free pork. Pig herds free from Y. enterocolitica O:3/biovar 4 have been established and maintained. According to serologic and cultural testing results, 15 of 16 specifi...