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293014

Insight into quorum sensing genes <i>Las</i>R and <i>Rhl</i>R, their related virulence factors and antibiotic resistance pattern in <i>Pseudomonas aeruginosa</i> isolated from oc

Article

Last updated: 25 Dec 2024

Subjects

-

Tags

Antimicrobial resistance

Abstract

Background:  Pseudomonas aeruginosa can cause several ocular infections that are associated with adverse outcomes, owing to the production of different virulence factors that are regulated by quorum-sensing (QS) mechanisms. The current study aims to detect different QS dependent virulence factors, antibiotic resistance patterns in P. aeruginosa associated with ocular infections to correlate them with QS genes and to assess their impact on visual outcome. Methods: several ocular specimens were collectedfor isolation ofP. aeruginosa. Antibiotic susceptibility was evaluated. The presence of QS genes (rhlR and lasR) was identifiedby PCR. The isolates were assessed for their capability to produce virulence factors such as pyocyanin, protease, twitching motility, exopolysaccharides, and biofilm. Results: Out of 55 P. aeruginosa isolates, 38.2% were MDR, 29.1% were XDR, and 12.7% were PDR. The highest sensitivity was to meropenem 67.3% while the lowest sensitivity was to ceftazidime18.2%. The frequency of studied virulence factors, exopolysaccharides production, biofilm formation, twitching motility, protease, and pyocyanin production was 94.5%, 89.1%, 83.6%, 81.8%, and 78.2% respectively. Quorum-sensing genes lasR and rhlR were identified in 89% and 81.8% of the isolates respectively. The assessed virulence factors and antibiotic resistance pattern were significantly correlated with the presence of QS system. Conclusion: This study emphasized the importance of the QS system in regulating the formation of virulence factors and antimicrobial resistance in P. aeruginosa. Consequently, anti-QS and anti-virulence therapy can be a promising substitute to antibiotic therapy currently available.

DOI

10.21608/mid.2023.197968.1480

Keywords

Key words: P. aeruginosa, Quorum sensing, Virulence factors, Antibiotic resistance

Authors

First Name

Esraa

Last Name

Mohamed

MiddleName

A.

Affiliation

Department of Medical Microbiology and Immunology, Faculty of Medicine, Tanta University, Egypt

Email

esraaaziz87@gmail.com

City

Tanta

Orcid

-

First Name

Amin

Last Name

Nawar

MiddleName

E.

Affiliation

Department of Ophthalmology, faculty of medicine, Tanta University, Egypt

Email

nawar20012002@gmail.com

City

Tanta

Orcid

-

First Name

Eman

Last Name

Hegazy

MiddleName

E.

Affiliation

Department of Medical Microbiology and Immunology, Faculty of Medicine, Tanta University, Egypt

Email

eman.hegazi@med.tanta.edu.eg

City

Tanta

Orcid

0000-0001-9263-1894

Volume

4

Article Issue

2

Related Issue

40831

Issue Date

2023-05-01

Receive Date

2023-03-04

Publish Date

2023-05-01

Page Start

575

Page End

589

Print ISSN

2682-4132

Online ISSN

2682-4140

Link

https://mid.journals.ekb.eg/article_293014.html

Detail API

https://mid.journals.ekb.eg/service?article_code=293014

Order

27

Type

Original Article

Type Code

1,157

Publication Type

Journal

Publication Title

Microbes and Infectious Diseases

Publication Link

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

MainTitle

Insight into quorum sensing genes <i>Las</i>R and <i>Rhl</i>R, their related virulence factors and antibiotic resistance pattern in <i>Pseudomonas aeruginosa</i> isolated from ocular Infections

Details

Type

Article

Created At

25 Dec 2024