ArticleAmerican journal of rhinology & allergy2019
Ivacaftor, a Cystic Fibrosis Transmembrane Conductance Regulator Potentiator, Enhances Ciprofloxacin Activity Against Pseudomonas aeruginosa.
Article in American journal of rhinology & allergy, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
34 citing papers in PubMed, 47 citations in OpenAlex.
- Article
- In Vitro Restoration of Colistin Susceptibility by Ivacaftor Synergy with Limited Reproducibility in a Murine Pneumonia Model.Antibiotics (Basel, Switzerland) · 2026Article
- Ceragenins in Combination with Ivacaftor Prevent the Formation of Biofilm by Bacteria That Cause Rhinosinusitis.Pharmaceutics · 2025Article
- Lipopolysaccharide Causes Acquired CFTR Dysfunction in Murine Nasal Airways.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2025Article
- Elexacaftor-tezacaftor-ivacaftor pharmacokinetics with concurrent tacrolimus administration after lung transplant.Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society · 2025Observational
- Changing profile of bacterial infection and microbiome in cystic fibrosis: when to use antibiotics in the era of CFTR-modulator therapy.European respiratory review : an official journal of the European Respiratory Society · 2024Review
- Effect of CFTR Modulators on Oxidative Stress and Autophagy in Non-CFTR-Expressing Cells.International journal of molecular sciences · 2024Article
- Safety and Pharmacokinetics of a Ciprofloxacin and Azithromycin Stent for Chronic Rhinosinusitis.The Laryngoscope · 2024Article
- Drug metabolism of ciprofloxacin, ivacaftor, and raloxifene by Pseudomonas aeruginosa cytochrome P450 CYP107S1.The Journal of biological chemistry · 2024Article
- Hypoxia-induced cystic fibrosis transmembrane conductance regulator dysfunction is a universal mechanism underlying reduced mucociliary transport in sinusitis.International forum of allergy & rhinology · 2024Article
- New Antimicrobial Strategies to Treat Multi-Drug Resistant Infections Caused by Gram-Negatives in Cystic Fibrosis.Antibiotics (Basel, Switzerland) · 2024Review
- Article
- Activity of Delafloxacin and Comparator Fluoroquinolones against Multidrug-ResistantAntibiotics (Basel, Switzerland) · 2023Article
- How Three Self-Secreted Biofilm Exopolysaccharides ofInternational journal of molecular sciences · 2023Review
- Article
- In vitro antibacterial effects of combination of ciprofloxacin with compounds isolated from Streptomyces luteireticuli NIIST-D75.The Journal of antibiotics · 2023Article
- Mutual Effects of Single and Combined CFTR Modulators and Bacterial Infection in Cystic Fibrosis.Microbiology spectrum · 2023Article
- The Impact of Highly Effective Modulator Therapy on Cystic Fibrosis Microbiology and Inflammation.Clinics in chest medicine · 2022Review
- Use of elexacaftor/tezacaftor/ivacaftor among cystic fibrosis lung transplant recipients.Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society · 2022Article
- Is there a role for antibiotics in the treatment of chronic rhinosinusitis?The Journal of allergy and clinical immunology · 2022Review
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
backgroundMethods to improve the clinical efficacy of currently available antibiotics against multidrug resistant bacteria in cystic fibrosis (CF) chronic rhinosinusitis (CRS) are greatly needed. Ivacaftor, a cystic fibrosis transmembrane conductance regulator potentiator, was recently identified as having potentially beneficial off-target effects as a weak inhibitor of bacterial DNA gyrase and topoisomerase IV. The objective of the current study is to evaluate whether ivacaftor enhances the antimicrobial activity of ciprofloxacin against Pseudomonas aeruginosa.
methodsThe planktonic growth of the PAO-1 strain of P. aeruginosa was studied in the presence of ciprofloxacin and/or ivacaftor. Effects were measured according to optical density of cultured PAO-1 at 600 nm. For a static PAO-1 biofilm assay, the PAO-1 strain was inoculated and cultured for 72 h in the presence of the drugs. Formed PAO-1 biofilms were quantified by crystal violet staining and imaged with confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM).
resultsPAO-1 growth was significantly reduced in the presence of ivacaftor (8 or 16 µg/mL) and ciprofloxacin (0.02 or 0.05 µg/mL) compared to ciprofloxacin alone ( P < .001). Similarly, ivacaftor (8 or 16 µg/mL) showed a significant reduction of PAO-1 biofilms when treated with 0.05 µg/mL of ciprofloxacin. Significant synergism was noted between ciprofloxacin and 16 µg/mL of ivacaftor ( P < .0001) in reducing planktonic growth and biofilm formation. Quantitative measurements with crystal violet staining were correlated to CLSM and SEM images.
conclusionIvacaftor enhanced ciprofloxacin's antimicrobial activity against P. aeruginosa. Further studies evaluating the efficacy of ivacaftor/ciprofloxacin combination for P. aeruginosa for CF CRS are warranted.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.