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Updated: Aug 16, 2026

Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice
Published on: March 17, 2014
Pseudomonas aeruginosa: role in the pathogenesis of the CF lung lesion
Andrew J Currie1, David P Speert, Donald J Davidson
1Division of Infectious and Immunological Diseases, Department of Pediatrics and British Columbia Research Institute for Children's and Women's Health, University of British Columbia, Vancouver, British Columbia, Canada.
Abstract:
Lung disease is the leading cause of morbidity and mortality in individuals with cystic fibrosis (CF), with P. aeruginosa the main pulmonary infectious agent. Although CF patients can become infected with other microorganisms (such as Burkholderia cepacia complex, Staphylococcus aureus, Haemophilus influenzae, and atypical mycobacteria), P. aeruginosa predominates, eventually infecting approximately 80% of patients. Once established, P. aeruginosa infection usually persists until death. The interaction between the CF host and this opportunistic pathogen is unique and most likely directly contributes to the classical end-stage pathology of CF lung disease. However, the extent to which this constitutes success by the pathogen or failure by the host, or both, is yet to be determined. Many important questions remain regarding host susceptibility, the role of both innate and adaptive immune defenses, bacterial infectivity and transmission, and pathogen virulence factors. Here, we discuss some recent advances toward understanding this complex interaction between host and pathogen and how the interplay influences the CF lung lesion.
Insights
Cystic fibrosis (CF) lung disease is driven by Pseudomonas aeruginosa infections. Understanding the complex host-pathogen interaction is key to improving outcomes for CF patients.
Area of Science:
- Pulmonary Medicine
- Microbiology
- Immunology
Background:
- Lung disease is the primary cause of death in cystic fibrosis (CF).
- Pseudomonas aeruginosa is the predominant opportunistic pathogen in CF lungs, infecting up to 80% of patients.
- Established P. aeruginosa infections in CF typically persist lifelong, contributing to end-stage lung pathology.
Purpose of the Study:
- To review recent advances in understanding the complex interaction between the CF host and P. aeruginosa.
- To explore how this host-pathogen interplay influences CF lung lesions.
- To identify remaining questions regarding host susceptibility, immune defenses, bacterial transmission, and virulence factors.
Main Methods:
- Literature review of recent research on CF and P. aeruginosa.
- Analysis of host-pathogen interactions in the context of CF lung disease.
- Discussion of current knowledge gaps and future research directions.
Main Results:
- P. aeruginosa infection is a critical factor in CF lung disease progression.
- The unique host-pathogen interaction significantly contributes to CF lung pathology.
- Recent advances highlight the complexity of immune responses, bacterial virulence, and transmission dynamics.
Conclusions:
- Further research is needed to elucidate host susceptibility and immune defense roles.
- Understanding pathogen virulence and transmission is crucial for therapeutic development.
- Addressing these complex interactions is essential for improving CF patient outcomes.
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