ArticleBMC microbiology2025
Detection of AdeAB, TetA, and TetB efflux pump genes in clinical isolates of tetracycline-resistant Acinetobacter baumannii from patients of Suez Canal University Hospitals.
Article in BMC microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Genetic characterization of tigecycline and carbapenem resistant Acinetobacter baumannii in a tertiary care hospital of Northern India.BMC microbiology · 2026Article
- Impact of Incremental Antiseptic Selection on Antibiotic Cross-Resistance and Enhanced Biofilm Formation inInternational journal of microbiology · 2026Article
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6 authors.
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Abstract
backgroundAcinetobacter baumannii is an opportunistic bacteria associated primarily with hospital-acquired infections. Its tendency to acquire or donate resistance genes to neighboring bacteria is a major concern. Tetracyclines have shown promise in treating A. baumannii infections, but tetracycline resistance is growing globally in A. baumannii isolates.
objectivesThe study aimed to study (1) the prevalence of multidrug-resistant (MDR) A. baumannii infections at Suez Canal University Hospitals, (2) the distribution of efflux pump genes AdeA &B, TetA, and TetB, and (3) the effect of efflux pump inhibitor (CCCP) on tetracycline-resistant isolates.
methodsClinical samples (457) were collected (blood, urine, sputum, ETA, pus, and pleural fluid), followed by A. baumannii isolation and identification, PCR detection of efflux pump genes, and detection of tetracycline susceptibility and its MIC before and after treatment with the efflux pump inhibitor (CCCP).
resultsA total of 31 A. baumannii isolates were recovered (6.78%). The highest rate of isolation was from the ICU (48.3%) from the ET aspirate samples (48.3%). The efflux system AdeA and TetB genes were distributed in 100% of isolates, whereas AdeB was found in 93.5% of isolates and the TetA gene in 87.1% of isolates. All A. baumannii isolates were MDR showing resistance to three or more classes of antibiotics. 45% of the isolates showed a 4-fold reduction of MIC and 12.9% showed a 2-fold reduction in the MIC.
conclusionsEfflux pump is an important mechanism for tetracycline resistance among A. baumannii isolates.
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