392297

Molecular detection and the frequency of a pore-forming toxin in <i>Enterococcus faecalis</i> isolated from urinary tract infections

Article

Last updated: 04 May 2025

Subjects

-

Tags

Molecular microbiology

Abstract

Background: Enterococcus faecalis is a causative agent for urinary tract infections (UTIs) in Iraq and worldwide, even though it is a commensal bacterium in human and animal intestines. It can cause different illnesses due to its ability to produce various virulence factors. A pore-forming toxin (cytolysin) is the most virulence factor in this bacterium. Objective: This study aims to molecularly investigate the frequency of cytolysin toxin among E. faecalis isolated from UTIs. Methods: A hundred and eighty urine specimens were collected from females diagnosed with UTIs. Traditional laboratory and molecular methods were used for bacterial identification and toxin detection using a modified DNA extraction method. Results:  The findings revealed that 27.7% (50\180) of causative agents in UTIs were E. faecalis based on the molecular technique that targeted a housekeeping gene (ddI) with specific primers using polymerase chain reaction (PCR). Most of the isolates harboured the cytolysin toxin gene (cylLL) with a frequency rate of 92% (46\50). Conclusions: A considerable prevalence of cytolysin-positive isolates in UTIs, which is a worrying indicates of the extensive spreading of a toxic strain in UTIs. The modified method for DNA extraction in gene detection was successfully used to amplify a housekeeping gene (ddI) and a virulence gene (cylLL) for cytolysin toxin detection, and this approach can be utilised for rapid bacterial identification and gene detection in medical and research purposes with a large sample size in an inexpensive manner within a short time.

DOI

10.21608/mid.2024.324353.2252

Keywords

Enterococcus faecalis, pore-forming toxin, cylLL gene, Urinary Tract infections, gene detection

Authors

First Name

Husam

Last Name

Auhim

MiddleName

Sabah

Affiliation

Department of Biology, Collage of Sciences, University of Baghdad, Baghdad. Iraq

Email

husam.auhim@sc.uobaghdad.edu.iq

City

Baghdad

Orcid

0000-0003-1086-741X

First Name

Nisreen

Last Name

Odaa

MiddleName

Hadi

Affiliation

Department of Biology, Collage of Sciences, University of Baghdad, Baghdad. Iraq

Email

nisreen.odaa@sc.uobaghdad.edu.iq

City

Baghdad

Orcid

0000-0001-7297-1728

Volume

6

Article Issue

2

Related Issue

55370

Issue Date

2025-05-01

Receive Date

2024-09-27

Publish Date

2025-05-01

Page Start

948

Page End

956

Print ISSN

2682-4132

Online ISSN

2682-4140

Link

https://mid.journals.ekb.eg/article_392297.html

Detail API

http://journals.ekb.eg?_action=service&article_code=392297

Order

392,297

Type

Original Article

Type Code

1,157

Publication Type

Journal

Publication Title

Microbes and Infectious Diseases

Publication Link

https://mid.journals.ekb.eg/

MainTitle

Molecular detection and the frequency of a pore-forming toxin in <i>Enterococcus faecalis</i> isolated from urinary tract infections

Details

Type

Article

Created At

04 May 2025