4.6 Article

Effect of Sub-Minimum Inhibitory Concentrations of Tyrosol and EDTA on Quorum Sensing and Virulence of Pseudomonas aeruginosa

Journal

INFECTION AND DRUG RESISTANCE
Volume 13, Issue -, Pages 3501-3511

Publisher

DOVE MEDICAL PRESS LTD
DOI: 10.2147/IDR.S264805

Keywords

PAO1; C. violaceum; signal molecules; real-time PCR; exotoxins; QS regulatory genes

Ask authors/readers for more resources

Introduction: Pseudomonas aeruginosa is considered a dangerous pathogen, as it causes many human diseases, besides that it is resistant to almost all types of antibacterial agents. So, new strategies to overcome P. aeruginosa infection have evolved to attenuate its virulence factors and inhibit its quorum-sensing (QS) activity. Purpose: This study investigated the effect of tyrosol and EDTA as anti-quorum-sensing and antivirulence agents against P. aeruginosa PAO1. Methods: Anti-quorum activity of sub-minimum inhibitory concentrations (sub-M1Cs) of tyrosol and EDTA was tested using Chromobacterium violaceum (CV 12,472) biosensor bioassay. Miller assay was used to assess the inhibition of QS signal molecules by beta-galactosidase activity determination. Also, their effects on the production of protease, lipase, lecithinase, and motility were tested. The inhibitory effects of these molecules on QS regulatory genes and exotoxins genes expression were evaluated by real-time PCR. Results: Tyrosol and EDTA at sub-M1Cs inhibited the production of violacein pigment. Both compounds inhibited QS molecules production and their associated virulence factors (protease, lipase, lecithinase, and motility) (P <= 0.05). Besides, the expression levels of QS regulatory genes (lasI, lasR, rhII, rhIR, pqsA, and pqsR) and exotoxins genes (exoS and exoY) were significantly reduced (P <= 0.05). Conclusion: Both tyrosol and EDTA can be used to fight P. aeruginosa infection as antiquorum-sensing and anti-virulence agents at their sub-MICs.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Biotechnology & Applied Microbiology

Effect of Tyrosol and Farnesol on Virulence and Antibiotic Resistance of Clinical Isolates of Pseudomonas aeruginosa

Shaymaa Hassan Abdel-Rhman, Areej Mostafa El-Mahdy, Mohammed El-Mowafy

BIOMED RESEARCH INTERNATIONAL (2015)

Article Chemistry, Applied

Synthesis of novel dyes based on curcumin for the creation of antibacterial silk fabrics

Hatem Gaffer, Hamada Mashaly, Shaymaa Hassan Abdel-Rhman, Mamdouh Hammouda

PIGMENT & RESIN TECHNOLOGY (2017)

Article Biotechnology & Applied Microbiology

Role of Pseudomonas aeruginosa lipopolysaccharides in modulation of biofilm and virulence factors of Enterobacteriaceae

Shaymaa H. Abdel-Rhman

ANNALS OF MICROBIOLOGY (2019)

Article Microbiology

Virulence Characteristics, Serotyping and Phylogenetic Typing of Clinical and Environmental Escherichia coli Isolates

Soha El-Shaer, Shaymaa Hassan Abdel-Rhman, Rasha Barwa, Ramadan Hassan

JUNDISHAPUR JOURNAL OF MICROBIOLOGY (2018)

Article Infectious Diseases

Comparative Assessment of Different PCR-Based Typing Methods of Pseudomonas aeruginosa Isolates

Shaymaa H. Abdel-Rhman, Dina E. Rizk

Summary: This study evaluated the performance of various PCR-based typing techniques in determining the genetic diversity of Pseudomonas aeruginosa urinary isolates. RAPD primer (P-640) showed the highest discrimination power, while ERIC-PCR excelled in most marker parameters. Combining data from different methods can enhance the performance and predictive power of typing methods.

INFECTION AND DRUG RESISTANCE (2021)

Article Microbiology

Characterization of Integrons and Quinolone Resistance in Clinical Escherichia coli Isolates in Mansoura City, Egypt

Shaymaa H. Abdel-Rhman, Rehab M. Elbargisy, Dina E. Rizk

Summary: This study reported a high prevalence of PMQR genes and integrons among clinical E. coli isolates. Although PMQR genes are not cassette-born, they were associated with the presence of integrons, contributing to the widespread of quinolone resistance in Egypt.

INTERNATIONAL JOURNAL OF MICROBIOLOGY (2021)

No Data Available