A new Shiga toxin
2 variant (Stx2f) from Escherichia coli isolated from pigeons.
EHEC strains are characterized by the ability to form attaching and effacing (A/E) lesions on the surface of epithelial cells in the gastrointestinal tract (4), and the production of shiga toxins
All members of the group spew lethal Shiga toxins
, which cause intestinal bleeding and can hit a person's other organs with deadly force.
A multiplex PCR assay was performed using previously published primer sequences to detect the presence of virulence genes encoding for enterohemolysin (ehxA) (10), intimin (eae) (10), and Shiga toxins
(stxl and stx2) (11).
Mitomycin C Induction of Bacterial Lysis, Shiga Toxin
1a Production, and Prophage Induction
Prevalence and genetic profiling of virulence determinants of Non-O157 shiga toxin
producing Escherichia coli isolated from cattle, beef and humans, Calcutta, India.
Genomic analysis of EAEC and EAEC-STEC O104:H4 strains revealed high similarity, and it has been suggested that EAEC-STEC O104:H4 strains evolved from EAEC O104:H4 strains by uptake of Shiga toxin
2 (Stx2)-producing bacteriophages (3,4).
coli bacteria around the world that cause disease by producing a toxin called Shiga toxin
We send these isolates out to the state lab for shiga testing, and they have always come back as negative for shiga toxin
Struture, biology, and relative toxicity of Shiga toxin
family members for cells and animals.
The outbreak isolates are distinguished from other O104:H4 strains because they contain genes encoding Shiga toxin
2 (Stx2) and a distinct set of additional virulence and antibiotic resistance factors.
1) Escherichia coli 0157:H7 and other strains that produce Shiga toxin
are collectively known as Shiga toxin
-producing E coli (STEC).