African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 4962

Full Length Research Paper

Detection of uropathogenic Escherichia coli virulence factors in patients with urinary tract infections in Iran

Aazam Karimian1*, Hassan Momtaz2 and Mahbobe Madani3
1, 3Department of Microbiology, Falavarjan Branch, Islamic Azad University, Falavarjan-Iran. 2Department of Microbiology, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.
Email: [email protected]

  •  Accepted: 06 September 2012
  •  Published: 11 October 2012


Besides all human infectious diseases, urinary tract infections have a high prevalence and in the majority of cases Escherichia coli is a dominance bacterium which can cause pyelonephritis and cystitis. In this present study, a total of 123 strains of E. coli isolated from patients with urinary tract infections were tested in a polymerase chain reaction for detection of E. coli’s virulence factors. Results showed that fimH gene with 79.67% had the highest and tsh and usp genes respectively with 0.0% and 1.62% had the lowest presence rates of virulence genes in E. coli isolated from patients with urinary tract infections. Also the presence of cnf1, hlyA, pap, iroN, afa, iuc, iha, ompT and irp2virulence genes were 50.4, 50.4, 50.4, 42.27, 8.13, 10.56, 17.88, 4.87 and 11.38%, respectively. The significant differences (P<0.05) were seen between presence of cnf1, hlyA, pap with ompT and afa virulence genes. So, results indicated the high presence of virulence genes in patients with urinary tract infections in Iran.   


Key words: Uropathogenic Escherichia coli, Virulence genes, PCR, Iran.

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