scholarly journals Identification and characterization of OmpT‐like proteases in uropathogenic Escherichia coli clinical isolates

2019 ◽  
Vol 8 (11) ◽  
Author(s):  
Isabelle Desloges ◽  
James A. Taylor ◽  
Jean‐Mathieu Leclerc ◽  
John R. Brannon ◽  
Andrea Portt ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Uropathogenic Escherichia Coli ◽  
Clinical Isolates ◽  
Identification And Characterization

Identification and characterization of class 1 integrons among multidrug-resistant uropathogenic Escherichia coli strains in Mexico

2022 ◽  
Vol 162 ◽  
pp. 105348
Author(s):  
Edgar González-Villalobos ◽  
Rosa María Ribas-Aparicio ◽  
Laura Belmont-Monroy ◽  
Gerardo Aparicio-Ozores ◽  
H. Ángel Manjarrez-Hernández ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Multidrug Resistant ◽  
Uropathogenic Escherichia Coli ◽  
Class 1 Integrons ◽  
Class 1 ◽  
Identification And Characterization

scholarly journals Identification and Characterization of a Novel FosA7 Member from Fosfomycin-Resistant Escherichia coli Clinical Isolates from Canadian Hospitals

2020 ◽  
Vol 65 (1) ◽  
pp. e00865-20
Author(s):  
Kieran A. Milner ◽  
Denice C. Bay ◽  
David Alexander ◽  
Andrew Walkty ◽  
James A. Karlowsky ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Susceptibility ◽  
Susceptibility Testing ◽  
Clinical Isolates ◽  
Phenotypic Characterization ◽  
Content Type ◽  
E Coli ◽  
Fosfomycin Resistance ◽  
Identification And Characterization

ABSTRACTHere, we characterize the fosA genes from three Escherichia coli clinical isolates recovered from Canadian patients. Each fosA sequence was individually overexpressed in E. coli BW25113, and antimicrobial susceptibility testing was performed to assess their role in fosfomycin resistance. The findings from this study identify and functionally characterize FosA3, FosA8, and novel FosA7 members and highlight the importance of phenotypic characterization of fosA genes.

scholarly journals Isolation and characterization of escherichia coli in ready-to-eat foods vended in Islamic University, Kushtia

1970 ◽  
Vol 18 ◽  
pp. 99-103 ◽  
Author(s):  
S Biswas ◽  
MAK Parvez ◽  
M Shafiquzzaman ◽  
S Nahar ◽  
MN Rahman
Keyword(s):  
Escherichia Coli ◽  
Pattern Analysis ◽  
University Campus ◽  
Rflp Pattern ◽  
E Coli ◽  
Fish Meat ◽  
Isolation And Characterization ◽  
Food Borne ◽  
Identification And Characterization

Context: Escherichia coli is shed in the feces of warm blooded animals and humans and thus potential for public health. Detection and characterization of E. coli in the ready-to-eat (RTE) foods concerns due to their presence indicates fecal contamination of the food.   Objective: To identify, characterize and RFLP pattern analysis of E. coli isolated from RTE foods vended in Islamic University campus, Kushtia.   Materials and Methods: Fifty samples from four types of consumed foods in six student halls of residence, some temporary restaurants of Islamic University, Kushtia were assessed for bacterial contamination by standard methods. Identification and characterization of E. coli isolates were performed using IMViC tests. Genomic DNA was used to perform RFLP pattern analysis.   Results: Thirty seven out of 50 (74%) examined samples of RTE foods had E. coli contamination. The highest number of E. coli was isolated from vegetable oriented RTE foods (90.90%) and fish, meat and cereals samples were also significantly E. coli positive. RFLP profiling of two E. coli isolates were observed.   Conclusion: The results of this study provide evidence that some RTE foods had unsatisfactory levels of contamination with E. coli. Thus street vended RTE food could be important potential vehicles for food-borne diseases. Molecular characterization may be exploited to identify food borne pathogen among different species.  Keywords: Ready-to-eat foods; Escherichia coli; RFLP pattern DOI: http://dx.doi.org/10.3329/jbs.v18i0.8783 JBS 2010; 18(0): 99-103

scholarly journals IDENTIFICATION OF AMPC Β-LACTAMASE-PRODUCING CLINICAL ISOLATES OF ESCHERICHIA COLI

2017 ◽  
Vol 10 (12) ◽  
pp. 357
Author(s):  
Tanushree Barua Gupta ◽  
Malini Shariff ◽  
Thukral Ss ◽  
S.s Thukral
Keyword(s):  
Escherichia Coli ◽  
Detection Method ◽  
Clinical Isolates ◽  
Confirmatory Test ◽  
Chain Reaction ◽  
E Coli ◽  
Resistance To Penicillin ◽  
Polymerase Chain ◽  
Third Generation Cephalosporins

  Objective: Indiscriminate use of β-lactam antibiotics has resulted in the emergence of β-lactamase enzymes. AmpC β-lactamases, in particular, confer resistance to penicillin, first-, second-, and third-generation cephalosporins as well as monobactams and are responsible for antibiotic resistance in nosocomial pathogens. Therefore, this study was undertaken to screen nosocomial Escherichia coli isolates for the presence and characterization of AmpC β-lactamases. The study also envisaged on the detection of inducible AmpC β-lactamases and extended-spectrum β-lactamases (ESBLs) in AmpC β-lactamase-producing E. coli.Methods: A total of 102 clinical isolates of E. coli, were subjected to cefoxitin screening, and screen-positive isolates were further subjected to inhibitor-based detection method, phenotypic confirmatory test, disc antagonism test, polymerase chain reaction (PCR), and isoelectric focusing (IEF).Results: In this study, 33% of E. coli were resistant to cefoxitin, of which 35% were found to be positive for AmpC β-lactamase by inhibitor-based phenotypic test. Of the AmpC-positive isolates, 83% were positive for ESBLs, whereas 25% were producing inducible AmpC β-lactamases. PCR and IEF showed CIT and EBC types of AmpC β-lactamases present in the tested isolates.Conclusion: Our study showed the presence of inducible AmpC enzymes and ESBLs in E. coli isolates and PCR identified more isolates to be AmpC producers.

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