As we compared the virulence factor
gene content of the 3 collections, we also compared the proportion of phylogenetic groups and subgroups and of resistant strains.
The infections could be more severe in immune-suppressed individuals like cancer and neutropenic patients.2 Various virulence factors
are produced by P.
Agarose gel electrophoresis image that shown the PCR product of a virulence factor
gene (iss) at (258 bp) in different bacterial isolates.
A virulence factor
that STEC and EPEC can have in common is the adherence factor intimin, which has the encoding sequence eaeA.
Table 4 showed that the most common virulence factors
possessed by the isolates were hemolysin and biofilm formation and are acid resistant.
Lynett et al., "cagE is a virulence factor
associated with Helicobacter pylori-induced duodenal ulceration in children," The Journal of Infectious Diseases, vol.
Primer pair sequences for real time PCR of the virulence factor
are 5' -TGAATCCTGTCGCTAATG-3' as the forward primer; and 5'-TATCATCCGACCTTTCACT-3' as the reverse primer (15).
faecium isolates are characterized by a high frequency of genes encoding putative virulence factors
, such as collagen adhesin (acm gene), enterococcal surface protein (esp gene), hyaluronidase (hyl gene), gelatinase (gelE gene), endocarditis antigen (efa gene), and cytolysin (cyl operon) .
It most closely resembles Group A streptococcus in genetic sequencing and also shares many of the same virulence factors
resulting in similar clinical manifestations.
Manganese-dependent regulation of the endocarditis-associated virulence factor
EfaA of Enterococcus faecalis.
capsulatum, CBP1 is a secreted virulence factor
that promotes intracellular replication of yeast [45, 46].
The virulence factor
in some species of GCS most frequently mentioned is the M protein, the protein that also belongs to group A streptococci [2, 5, 7, 10, 12, 14, 21, 22].