ArticlePloS one2018
Association between possession of ExoU and antibiotic resistance in Pseudomonas aeruginosa.
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.
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Who cites it
44 citing papers in PubMed, 79 citations in OpenAlex.
- Comparative study of antibiotic resistance and virulence profiles of exoU and exoS Pseudomonas aeruginosa isolates from urinary tract infections and microbial keratitis in Bangladesh and India.World journal of microbiology & biotechnology · 2026Article
- Topical formulation of repurposed FDA-approved compounds inhibits Pseudomonas aeruginosa ExoU and improves corneal infection outcomes.PLoS pathogens · 2026Article
- Antibiotic resistance mechanisms and global resistance patterns of Pseudomonas aeruginosa in microbial keratitis.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026Review
- Antimicrobial Cyclic Peptidomimetics.Macromolecular rapid communications · 2026Article
- Effects of repeated culture in sub-inhibitory concentrations of ciprofloxacin on resistance and genetic characteristics of an ocular Pseudomonas aeruginosa isolate.World journal of microbiology & biotechnology · 2026Article
- Genomic, proteolytic, and phenotypic characterization ofMicrobiology spectrum · 2026Article
- Development of a Highly Specific RPA/CRISPR-Cas13a Assay for Detection ofCurrent issues in molecular biology · 2026Article
- Comprehensive characterization of virulence factors in Pseudomonas aeruginosa clinical isolates from Bushehr, Iran: High proportion of exoU-positive isolates.BMC microbiology · 2026Article
- Comparison of virulence factors genes between exoU and exoS Pseudomonas aeruginosa in microbial keratitis.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026Article
- Draft genome sequence ofMicrobiology resource announcements · 2026Article
- Comparative phenotypic and genotypic analysis of distinctFrontiers in cellular and infection microbiology · 2026Article
- Structural and functional insights into Pseudomonas aeruginosa's secretion systems 1-6: regulation, role in microbial keratitis and drug targets.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026Review
- Synergistic activity of ceftazidime/avibactam combined with aztreonam against MBL-producingFrontiers in cellular and infection microbiology · 2026Article
- Indole-Acetic Acid Impairs Pseudomonas aeruginosa Virulence and Alters Lung Infection in Mice.MicrobiologyOpen · 2025Article
- Coexistence of Multidrug Resistance and Hypervirulence-Associated Genes in Clinical Carbapenem-ResistantJournal of microbiology and biotechnology · 2025Article
- Differences in antimicrobial resistance between exoU and exoS isolates of Pseudomonas aeruginosa.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2025Article
- Multidrug resistance in Pseudomonas aeruginosa: genetic control mechanisms and therapeutic advances.Molecular biomedicine · 2024Review
- Characterization ofAnimals : an open access journal from MDPI · 2024Article
- Use of the Naturally Occurring Bacteriophage Grouping Model for the Design of Potent Therapeutic Cocktails.Antibiotics (Basel, Switzerland) · 2024Article
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Corrections and comments
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Virulent strains of Pseudomonas aeruginosa are often associated with an acquired cytotoxic protein, exoenzyme U (ExoU) that rapidly destroys the cell membranes of host cells by its phospholipase activity. Strains possessing the exoU gene are predominant in eye infections and are more resistant to antibiotics. Thus, it is essential to understand treatment options for these strains. Here, we have investigated the resistance profiles and genes associated with resistance for fluoroquinolone and beta-lactams. A total of 22 strains of P. aeruginosa from anterior eye infections, microbial keratitis (MK), and the lungs of cystic fibrosis (CF) patients were used. Based on whole genome sequencing, the prevalence of the exoU gene was 61.5% in MK isolates whereas none of the CF isolates possessed this gene. Overall, higher antibiotic resistance was observed in the isolates possessing exoU. Of the exoU strains, all except one were resistant to fluoroquinolones, 100% were resistant to beta-lactams. 75% had mutations in quinolone resistance determining regions (T81I gyrA and/or S87L parC) which correlated with fluoroquinolone resistance. In addition, exoU strains had mutations at K76Q, A110T, and V126E in ampC, Q155I and V356I in ampR and E114A, G283E, and M288R in mexR genes that are associated with higher beta-lactamase and efflux pump activities. In contrast, such mutations were not observed in the strains lacking exoU. The expression of the ampC gene increased by up to nine-fold in all eight exoU strains and the ampR was upregulated in seven exoU strains compared to PAO1. The expression of mexR gene was 1.4 to 3.6 fold lower in 75% of exoU strains. This study highlights the association between virulence traits and antibiotic resistance in pathogenic P. aeruginosa.
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