All four isolates obtained in the present study were negative for all additional virulence factors
tested, including beta-2 toxin encoding-gene (cpb2), already reported in other wild animals, and enterotoxin encoding gene (cpe), an important virulence factor
In addition, the O antigen is required for proper functionality or expression of other outer membrane virulence factors
This highlights the importance of the present study that aimed at targeting a virulence factor
of the human pathogen S.
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) .
Manganese-dependent regulation of the endocarditis-associated virulence factor
EfaA of Enterococcus faecalis.
Seropositivity for Antibodies to DRS-G, a Virulence Factor
from Streptococcus dysgalactiae subsp.
Therefore it is deduced that PVL, g-hemolysis and LukED may be important virulence factors
in the pathogenesis of S.
Research on prevalent Candida species along with their virulence factors
in a given set up would be an important tool to prove the relation between the infective species of Candida and infection.
Some studies have identified just 2 or 3 virulence factor
genes, while others have detected up to 6.
T1 NI NI NI NI T2 NI NI NI NI T3 NI NI NI NI T4 - - + + NI: Not isolated; -: Negative reaction to virulence factor
; +: Positive reaction to virulence factor
faecium isolates biofilm formation was the most commonly observed virulence factor
(51%) followed by haemolysis production (20%).
In a comparison of virulence factors
between biofilm-forming isolates and planktonic cells, significant difference was seen for plasma coagulase and hemolysin production.