Abd El-Baky RM, Ibrahim RA, Mohamed DS, Ahmed EF, Hashem ZS. Prevalence of Virulence Genes and Their Association with Antimicrobial Resistance Among Pathogenic
E. coli Isolated from Egyptian Patients with Different Clinical Infections.
Infect Drug Resist 2020;
13:1221-1236. [PMID:
32425560 PMCID:
PMC7196243 DOI:
10.2147/idr.s241073]
[Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 04/04/2020] [Indexed: 12/20/2022] Open
Abstract
Introduction
Escherichia (E.) coli can cause intestinal and extra-intestinal infections which ranged from mild to life-threatening infections. The severity of infection is a product of many factors including virulence properties and antimicrobial resistance.
Objectives
To determine the antibiotic resistance pattern, the distribution of virulence factors and their association with one another and with some selected resistance genes.
Methods
Virulence properties were analyzed phenotypically while antimicrobial susceptibility was tested by Kirby-Bauer agar disc diffusion method. In addition, 64 E. coli isolates were tested for 6 colicin genes, fimH, hlyA, traT, csgA, crl virulence genes and bla−CTX-M-15, bla−oxa-2, and bla−oxa-10 resistance genes by polymerase chain reaction (PCR).
Results
Extra-intestinal pathogenic E. coli isolated from urine and blood samples represented a battery of virulence factors and resistance genes with a great ability to produce biofilm. Also, a significant association (P<0.05) among most of the tested colicin, virulence and resistance genes was observed. The observed associations indicate the importance and contribution of the tested factors in the establishment and the progress of infection especially with Extra-intestinal E. coli (ExPEC) which is considered a great challenging health problem.
Conclusion
There is a need for studying how to control these factors to decrease the rate and the severity of infections. The relationship between virulence factors and resistance genes is complex and needs more studies that should be specific for each area.
Collapse