375083

Phenotypic Detection of Some Beta-lactamases and Enterobacterial Repetitive Intergenic Consensus Genotyping (ERIC) of Natively Isolated Uropathogenic Escherichia coli

Article

Last updated: 05 Jan 2025

Subjects

-

Tags

Clinical microbiology

Abstract

Background:  β-lactamases comprise wide number of enzymes sharing a common goal which is the hydrolysis of β-lactam anibiotics. Enterobacterial Repetitive Intergenic Consensus –Polymerase Chain Reaction is considered as one of the most reliable fingerprinting technique that provides sharp and fast results with relatively low cost. Objective: The current study aimed to isolate Uropathogenic E. coli and explore the possession of some β-lactamases phenotypically and to genetically typing the β-lactam resistant isolates. Methodology: During the study period between November 2023 and January 2024, (80) urine samples were collected from (66 )female and (14 )male patients , who visited hospitals in Al- Najaf Al-Ashraf province in order to isolate uropathogenic Escherichia coli. Identification was done using cultural and biochemical tests supported by utilizing Vitek-2 system. Antibiotic sensitivity test was used to determine pattern of resistance, Screening tests of β-lactamases comprised (DDST) and (CST) on those showed resistance to ceftriaxone. Genetic study included the use of Enterobacterial Repetitive Intergenic Consensus –Polymerase Chain Reaction (ERIC-PCR) technique to determine genetic variation of those isolates. Results: In this study (26) isolates were obtained. AST results showed that total number of isolates were resistant to tetracycline, while (84.6%) were resistant to trimethoprim, (53.8%) were resistant to ceftriaxone. While resistant and sensitive isolates were equal regarding ciprofloxacin.. Results showed that out of 14 cefitriaxone resistant isolates three (21.4%) of isolates were resistant to imipenem. Screening method of (MBLs) showed that threes isolates (EC3, EC8, and EC14) gave positive results (MBL producers) for both tests. Regarding the screening the Extended spectrum beta lactamases, results were negative where the isolates were either susceptible to β-lacatam antibiotics involved in the test, or resistant to all antibiotics used. Furthermore, genetic analysis of (ERIC-PCR)  revealed at similarity ≥ 70% the presence of 9 different clusters, eight of them with single isolate, other three clusters with two identical pattern each. Identical pattern was shown in two of MBL producers (EC3, EC14). Conclusion: We conclude that native Escherichia coli isolates had the ability to produce metallo beta-lactamases, they produced various ERIC patterns, which reflects the high genetic variation these bacteria possess, though they caused the same infection (urinary tract infection), and presence of convergence may reflect phenotypic similarity of resistance pattern.

DOI

10.21608/ejmm.2024.307213.1289

Keywords

Beta-lactamases, MBL, ERIC –PCR, Escherichia coli, UTI

Authors

First Name

Ebtehal

Last Name

Edrees

MiddleName

E.

Affiliation

Department of Pathological Analyses, Faculty of Science, University of Kufa, Najaf, Iraq

Email

ebtehaledrees22@yahoo.com

City

najaf

Orcid

-

First Name

Ahmed

Last Name

Hussein

MiddleName

A.

Affiliation

Department of Pathological Analyses, Faculty of Science, University of Kufa, Najaf, Iraq

Email

ahmedhussein22@yahoo.com

City

najaf

Orcid

-

First Name

Noor

Last Name

Al-Buhamrah

MiddleName

A.

Affiliation

Department of Pathological Analyses, Faculty of Science, University of Kufa, Najaf, Iraq

Email

noorabdul22@yahoo.com

City

najaf

Orcid

-

Volume

33

Article Issue

4

Related Issue

49337

Issue Date

2024-10-01

Receive Date

2024-08-13

Publish Date

2024-10-01

Page Start

75

Page End

82

Print ISSN

1110-2179

Online ISSN

2537-0979

Link

https://ejmm.journals.ekb.eg/article_375083.html

Detail API

https://ejmm.journals.ekb.eg/service?article_code=375083

Order

10

Type

New and original researches in the field of Microbiology.

Type Code

2,038

Publication Type

Journal

Publication Title

Egyptian Journal of Medical Microbiology

Publication Link

https://ejmm.journals.ekb.eg/

MainTitle

Phenotypic Detection of Some Beta-lactamases and Enterobacterial Repetitive Intergenic Consensus Genotyping (ERIC) of Natively Isolated Uropathogenic Escherichia coli

Details

Type

Article

Created At

28 Dec 2024