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Updated: Nov 4, 2025
Pseudomonas aeruginosa Induced Lung Injury Model
Published on: October 29, 2014
A Mouse Model of Pseudomonas aeruginosa Pneumonia
Brian W LeBlanc1,2, Craig T Lefort3,4
1Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI, USA.
Abstract:
The rapid innate immune response to respiratory infection is essential to prevent the systemic dissemination of pathogens. This chapter outlines an experimental mouse model of respiratory infection by gram-negative Pseudomonas aeruginosa and analyses of leukocyte trafficking in the lungs. The reader will learn two methods to induce respiratory infection in mice that differ in whether the initial bolus is targeted within a specific lobe of the lung. We then describe a technique based on tissue digestion and flow cytometry that allows the investigator to distinguish leukocytes within different compartments of the lung, and discuss the advantages and limitations to such an approach.
Insights
This study details a mouse model for Pseudomonas aeruginosa respiratory infection, analyzing immune cell movement in the lungs. It provides methods to track immune cell responses critical for fighting lung infections.
Area of Science:
- Immunology
- Microbiology
- Respiratory Medicine
Background:
- The innate immune system rapidly responds to respiratory infections to prevent pathogen spread.
- Pseudomonas aeruginosa is a gram-negative bacterium causing significant respiratory infections.
Purpose of the Study:
- To outline an experimental mouse model for Pseudomonas aeruginosa respiratory infection.
- To analyze leukocyte trafficking within the lungs following infection.
- To describe methods for inducing and analyzing respiratory infections in mice.
Main Methods:
- Two distinct methods for inducing respiratory infection in mice are presented, varying in inoculum targeting.
- A technique involving lung tissue digestion and flow cytometry is described.
- This technique distinguishes leukocytes in different lung compartments.
Main Results:
- The study provides a framework for analyzing leukocyte recruitment and distribution in the lung post-infection.
- The described methods allow for detailed investigation of immune cell dynamics in response to P. aeruginosa.
Conclusions:
- The experimental model and analytical techniques facilitate the study of innate immune responses in the lung.
- Understanding leukocyte trafficking is crucial for developing strategies against respiratory pathogens like P. aeruginosa.
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