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The complex interplay among bacterial motility and virulence factors in different Escherichia coli infections.
- Source :
-
European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology [Eur J Clin Microbiol Infect Dis] 2014 Dec; Vol. 33 (12), pp. 2157-62. Date of Electronic Publication: 2014 Jun 24. - Publication Year :
- 2014
-
Abstract
- Motility mediated by the flagella of Escherichia coli is important for the bacteria to move toward host cells. Here, we present the relationship among bacterial motility, virulence factors, antimicrobial susceptibility, and types of infection. A total of 231 clinical E. coli isolates from different infections were collected and analyzed. Higher-motility strains (motility diameter ≥6.6 mm) were more common in spontaneous bacterial peritonitis (SBP) (SBP 59 %, colonization 32 %, urinary tract infection 16 %, urosepsis 34 %, and biliary tract infection 29 %; p < 0.0001). Compared with the higher-motility group, there was a higher prevalence of afa and ompT genes (p = 0.0160 and p = 0.0497, respectively) in E. coli strains with lower motility. E. coli isolates with higher and lower motility were in different phylogenetic groups (p = 0.018), with a lower prevalence of A and B1 subgroups in higher-motility strains. Also, the patterns of virulence factors and antibiotic susceptibility of E. coli isolates derived from various infections were significantly different. This study demonstrates that the prevalence of higher-motility strains was greater in E. coli isolates from SBP compared to other types of infection. Various types of E. coli infection were associated with differences in bacterial motility, virulence factors, and antibiotic susceptibility. More bacterial virulence factors may be necessary for the development of extraintestinal infections caused by E. coli isolates with lower motility.
- Subjects :
- Adhesins, Escherichia coli genetics
Anti-Bacterial Agents pharmacology
Escherichia coli drug effects
Escherichia coli genetics
Flagella genetics
Humans
Microbial Sensitivity Tests
Virulence
Virulence Factors genetics
Escherichia coli pathogenicity
Escherichia coli Infections microbiology
Escherichia coli Proteins genetics
Virulence Factors physiology
Subjects
Details
- Language :
- English
- ISSN :
- 1435-4373
- Volume :
- 33
- Issue :
- 12
- Database :
- MEDLINE
- Journal :
- European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 24957011
- Full Text :
- https://doi.org/10.1007/s10096-014-2171-2