Hybridization of strains of Escherichia coli O157 with probes derived from the eaeA gene of enteropathogenic E. coli and the eaeA homolog from a Vero cytotoxin-producing strain of E. coli O157
نویسندگان
چکیده
منابع مشابه
Enteropathogenic Escherichia coli O157 Strains from Brazil
We describe two serogroup O157 Escherichia coli strains from Brazilian infants with diarrhea. A variety of assays indicate that these strains belong to the enteropathogenic, not the enterohemorrhagic, pathotype. These strains possess a novel bfpA allele encoding the type IV pilin characteristic of typical enteropathogenic E. coli strains. Our results emphasize the pitfalls of classifying pathog...
متن کاملDetection of the eaeA Gene in Escherichia coli Isolated from Broiler Chickens by Polymerase Chain Reaction
The aim of this study was to isolate Escherichia coli from chickens and to determine the presence of the eaeA gene, a virulence factor detected in Escherichia coli, in the isolates by polymerase chain reaction (PCR). Different chicken organs (lung, liver and spleen) were inoculated onto blood agar and biochemical tests were performed on the suspicious isolates. Escherichiacoliwas isolated from ...
متن کاملComparative pathogenicity of Escherichia coli O157 and intimin-negative non-O157 Shiga toxin-producing E coli strains in neonatal pigs.
We compared the pathogenicity of intimin-negative non-O157:H7 Shiga toxin (Stx)-producing Escherichia coli (STEC) O91:H21 and O104:H21 strains with the pathogenicity of intimin-positive O157:H7 and O157:H(-) strains in neonatal pigs. We also examined the role of Stx2d-activatable genes and the large hemolysin-encoding plasmid of O91:H21 strain B2F1 in the pathogenesis of STEC disease in pigs. W...
متن کاملSurface properties of the Vero cytotoxin-producing Escherichia coli O157:H7.
Strains of Escherichia coli serotype O157:H7 are Vero cytotoxin-producing enteric pathogens which have been associated with sporadic cases and outbreaks of hemorrhagic colitis and with the hemolytic uremic syndrome in humans. In addition to toxin production, adherence of many pathogenic bacteria to intestinal mucosal surfaces is a critical primary step in the pathogenesis of diarrheal diseases....
متن کاملThe surveillance of vero cytotoxin-producing Escherichia coli O157 in Wales, 1990 to 1998.
Population-based surveillance for Vero cytotoxin-producing Escherichia coli (VTEC) O157 has been carried out in Wales since 1990. The annual incidence has remained stable during the 9-year period (mean: 1.6 cases per 100,000 population); the rate is highest in children younger than 5 years of age. Blood in the stool is reported in fewer than half the cases, indicating the importance of screenin...
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ژورنال
عنوان ژورنال: Journal of Clinical Microbiology
سال: 1994
ISSN: 0095-1137,1098-660X
DOI: 10.1128/jcm.32.4.897-902.1994