Genetic Variability of Avian Escherichia coli Strains Evaluated by Enterobacterial Repetitive Intergenic Consensus and Repetitive Extragenic Palindromic Polymerase Chain Reaction

2001 ◽  
Vol 45 (1) ◽  
pp. 173 ◽  
Author(s):  
Alexandre Carvalho de Moura ◽  
Kinue Irino ◽  
Marilda Carlos Vidotto
Keyword(s):  
Escherichia Coli ◽  
Polymerase Chain Reaction ◽  
Genetic Variability ◽  
Enterobacterial Repetitive Intergenic Consensus ◽  
Chain Reaction ◽  
Polymerase Chain ◽  
Repetitive Extragenic Palindromic

scholarly journals Genetic Characterization Among Carbapenem-resistant Escherichia coli Strains Using Enterobacterial Repetitive Intergenic Consensus Polymerase Chain Reaction (ERIC-PCR) Fingerprinting in South Africa

2020 ◽  
Author(s):  
Kingsley Ehi Ebomah ◽  
Anthony Ifeanyi Okoh
Keyword(s):  
Escherichia Coli ◽  
Polymerase Chain Reaction ◽  
Antimicrobial Agents ◽  
Genetic Relatedness ◽  
Carbapenem Resistance ◽  
Beta Lactam ◽  
Enterobacterial Repetitive Intergenic Consensus ◽  
Chain Reaction ◽  
E Coli ◽  
Polymerase Chain

Abstract Background Carbapenems belong to beta-lactam class of antibiotics usually considered as the last line of defense because they can be effective against severe infections caused by prevalent multidrug-resistant (MDR) pathogens. However, carbapenems can be deactivated by bacteria that produce carbapenemase (beta-lactamase). This study was conducted to screen for carbapenem-resistance genes (CRGs) harbored by pathogenic strains of Escherichia coli recovered from different environmental samples. We also assessed the genetic relatedness among selected E. coli pathotypes using enterobacterial repetitive intergenic consensus-polymerase chain reaction (ERIC-PCR).Method: Molecular identification and characterization of the presumptive isolates were performed using PCR and isolates that exhibited antimicrobial resistance (AMR) phenotypically were further screened for some relevant CRGs (blaNDM−1, blaKPC and blaOXA−48−like). Furthermore, ERIC-PCR was used to determine the similarity and diversity of 31 E. coli strains which were randomly selected from the different sources analyzed in this study.Result Our findings revealed a total of 238 presumptive E. coli isolates, out of which 192 were confirmed positive for uidA gene. Further screening revealed 77 (40%) isolates belong to six key E. coli pathotypes and 70 of them exhibited phenotypic AMR. Additionally, twenty-nine (41%) of the 70 MDR pathogenic E. coli strains harbored CRGs; with 24 strains harboring blaNDM−1, 8 harboring blaKPC and 2 harboring blaOXA−48−like genes.Conclusion Findings also suggest that the selected E. coli pathotypes belonged to different genomic clusters, while the cluster analysis showed a possible genetic diversity among aquatic and farm isolates. Proper treatment of final effluents before discharge as well as the development of more effective strategies to control and manage the use of antimicrobial agents were strongly recommended.

scholarly journals Identification, characterization and molecular epidemiology of Escherichia coli isolated from lamb and goat kids with diarrhoea

2013 ◽  
Vol 82 (4) ◽  
pp. 357-362 ◽  
Author(s):  
Süheyla Türkyılmaz ◽  
Seza Eskiizmirliler ◽  
Serra Tunaligil ◽  
Bulent Bozdogan
Keyword(s):  
Escherichia Coli ◽  
Polymerase Chain Reaction ◽  
Antibiotic Resistance ◽  
Small Ruminants ◽  
Multi Drug Resistance ◽  
Enterobacterial Repetitive Intergenic Consensus ◽  
Chain Reaction ◽  
E Coli ◽  
Neonatal Diarrhoea ◽  
Polymerase Chain

Neonatal diarrhoea is a serious health problem on commercial farms. EnterovirulentEscherichia coliis a significant aetiological agent of neonatal diarrhoea. In this work, identification and classification ofE. coliisolates obtained from lambs and goat kids with diarrhoea were studied along with antibiotic resistance and clonal relationships of enterovirulent strains. A total of 107E. colistrains isolated from animals on 43 farms were investigated. Specific virulence genes were determined by multiplex and uniplex polymerase chain reaction. Testing of antibiotic susceptibility was carried out by the Vitek II compact system. The relationship ofE. coliisolates was determined by enterobacterial repetitive intergenic consensus polymerase chain reaction. A total of 39 (36.4%) enterovirulentE. colistrains were identified and of this 19 (48.7%) were shiga toxigenic, 12 (30.8%) enterotoxigenic and 8 (20.5%) enteropathogenic. Three isolates (7.7%) were found to be positive for extended spectrum beta lactamase; 10 (25.6%) isolates showed multi-drug resistance to antimicrobials. A total of 28 types were detected by enterobacterial repetitive intergenic consensus polymerase chain reaction. Twenty strains had distinct types while 5 types were common for 2 strains and 3 types were common for 3 strains. This is the first current determination of types, clonality and antibiotic resistance of enterovirulentE. coliisolated from small ruminants with diarrhoea. The results of this study showed that the rates of shiga toxigenic, enterotoxigenic and enteropathogenic isolates ofE. coliare high in the western part of Turkey. Although these isolates were not clonal, presence of multidrug resistant isolates may cause public health problems.

Molecular Analysis of Uropathogenic E.coli Isolates from Urinary Tract Infections

2019 ◽  
Vol 19 (3) ◽  
pp. 322-326 ◽  
Author(s):  
Hassan Valadbeigi ◽  
Elham Esmaeeli ◽  
Sobhan Ghafourian ◽  
Abbas Maleki ◽  
Nourkhoda Sadeghifard
Keyword(s):  
Escherichia Coli ◽  
Polymerase Chain Reaction ◽  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Multiplex Polymerase Chain Reaction ◽  
Virulence Genes ◽  
Uropathogenic Escherichia Coli ◽  
Chain Reaction ◽  
Polymerase Chain ◽  
Tract Infections

Introduction: The aim of the current study was to investigate the prevalence of virulence genes in uropathogenic Escherichia coli (UPEC) isolates in Ilam. Materials and Methods: For this purpose, a total of 80 UPEC isolates were collected for patients with UTIs during a 6 months period. The multiplex polymerase chain reaction (multiplex PCR) was used to detect the papEF, fimH, iucD, hlyA, fyuA, and ompT genes. Results: The prevalence of fimH, papEF, iucD, fyuA, hlyA, hlyA, and ompT genes were 87.5%, 47.5%, 60%, 67.5%, 27.5%, 47.5% and 71.2%, respectively. Among all of the isolates, 27 profiles were obtained. Conclusion: Our findings demonstrated that the most prevalence was found for fimH, and different distribution of virulence genes suggested different ability of pathogenicity.

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