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Visualization of Pseudomonas aeruginosa within the Sputum of Cystic Fibrosis Patients
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Visualization of Pseudomonas aeruginosa within the Sputum of Cystic Fibrosis Patients

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Cystic Fibrosis and Pseudomonas aeruginosa: the Host-Microbe Interface

Sankalp Malhotra1,2, Don Hayes2,3,4, Daniel J Wozniak5,4,6

  • 1Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA.

Clinical Microbiology Reviews
|May 31, 2019
PubMed

Insights

Cystic fibrosis (CF) lung disease involves a damaging interplay between host immunity and chronic Pseudomonas aeruginosa infections. Understanding this host-pathogen interaction is key to improving CF patient outcomes.

Area of Science:

  • Immunology
  • Microbiology
  • Pulmonology

Background:

  • Cystic fibrosis (CF) involves a hyperinflammatory immune response and chronic pulmonary infections.
  • Pseudomonas aeruginosa is a common pathogen in CF lungs, accelerating disease progression.
  • P. aeruginosa exhibits resistance to host defenses and antibiotics due to virulence factors and adaptive mutations.

Purpose of the Study:

  • To review the host-pathogen interface in CF pulmonary disease.
  • To discuss disease progression, focusing on host and bacterial factors.
  • To examine immune effectors, bacterial virulence, and their localization in the CF lung.

Main Methods:

  • Review of existing literature on CF pathophysiology.
  • Analysis of host immune factors, including reactive oxygen species (ROS) and antimicrobial peptides.
  • Examination of P. aeruginosa virulence factors and adaptive mutations.
  • Discussion of host-bacterial factor distribution in CF lung anatomical niches.

Main Results:

  • The CF lung exhibits a complex interaction between a dysfunctional immune system and persistent P. aeruginosa infection.
  • Neutrophil-derived factors like ROS and antimicrobial peptides play critical roles in CF lung disease.
  • P. aeruginosa employs virulence factors and adaptive mutations to evade host immune responses.
  • Host and bacterial factors are distributed within specific anatomical niches in the CF lung.

Conclusions:

  • The host-pathogen interface is central to CF pulmonary disease pathogenesis.
  • Targeting P. aeruginosa virulence and host inflammatory responses may offer therapeutic strategies.
  • Further research into the spatial distribution of host and bacterial factors can elucidate disease mechanisms.
Keywords:
ROSairwayantimicrobial peptidescystic fibrosisinflammationinnate immunitylung infectionreactive oxygen species

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