Typical and atypical EPEC seem to constitute two groups of distinct organisms that have in common the LEE pathogenicity island
. Atypical EPEC are closer to STEC in genetic characteristics, serotypes, production of toxins, reservoir, and other epidemiologic aspects.
Interplay between pathogenicity island
carriage, resistance profile and plasmid acquisition in uropathogenic Escherichia coli.
Investigating the presence of virulence factors coded as different pathogenicity islands
will guide us in the matter of discovering Salmonella pathogenesis.
coli pathotypes have emerged overtime through the transfer of virulence factors from other bacterial species by way of mobile genetic elements such as pathogenicity islands
, transposons, and plasmids (7).
E.coli have many virulence factors, including adhesin, enterotoxin, shiga toxigenic and pathogenicity island
which is widely distributed among diarrheic pigs (Zhang et al., 2007; Contrepois et al., 1989).
"A Novel Putative Enterococcal Pathogenicity Island
Linked to the esp Virulence Gene of Enterococcus faecium and Associated with Epidemicity." Journal of Bacteriology, 186(3): 672-682.
Some studies have associated several virulence genes with the APEC pathotype, and these genes maybe present on plasmids or chromosomal DNA fragments called PAIs (pathogenicity islands
These features suggest that this DNA fragment is a horizontally acquired transposon-like element (9) and together with the frequent association of the usp gene with UPEC strains, imply that this DNA fragment could be the previously unrecognized pathogenicity island
(PAI) of UPEC.
The cag pathogenicity island
(cag-PAI), a major determinant of H.
A bacteriophage encoding a pathogenicity island
, a type-IV pilus and a pahage receptor in cholera bacteria.
The Salmonella Pathogenicity Island
(SPI) 1 contributes more than SPI2 to the colonization of the chicken by Salmonella enterica serovar Typhimurium BMC Microbiology 9:3 Disponible en: http://www biomed central com/1471-2180/9/3
The pathogenicity island
studied is a prototype of a new family of virulent DNA recently discovered which also can be transferred to other species of bacteria such as Listeria monocytogenes, responsible for a large number of intoxications.