[Genetic mechanisms of Salmonella enteritidis biodiversity and clinical features of salmonellosis]

Autor: A R, Mavziutov, R T, Murzabaeva, R G, Nazmutdinova, I A, Mirsaiapova
Rok vydání: 2010
Předmět:
Zdroj: Zhurnal mikrobiologii, epidemiologii i immunobiologii. (5)
ISSN: 0372-9311
Popis: To assess prevalence of fragments of Escherichia coli pathogenicity islands in Salmonella enteritidis strains as well as to study clinical signs of disease caused by these strains in adults.Ninety-six patients with salmonellosis were studied. Ninety strains of S. enteritidis were isolated and tested by PCR for the presence of genes associated with pathogenicity islands of E. coli: hlyA, hlyB, sfaG, and sfaA.It was determined that DNA fragments homologous to pathogenicity islands of E. coli were present in 87 (96.7%) of S. enteritidis clinical isolates. Disease caused by Salmonella strains which possess only sfaG was mostly mild--7 (33.3%), whereas strains which had sfaG with fragments of hlyA and/or hlyB caused severe disease--7 (50%). sfaA fragments were found mostly in combination with other genes. In such cases the disease was mostly severe--6 (42.8%).Correlation between presence of E. coli pathogenicity islands in Salmonella spp., their antibiotic resistance and severity of infection was established.
Databáze: OpenAIRE