The Role of Flagella in Pseudomonas aeruginosa Resistance to Surfactant Protein A
Author Information
Author(s): Zhang Shiping, McCormack Francis X., Levesque Roger C., O'Toole George A., Lau Gee W.
Primary Institution: University of Cincinnati College of Medicine
Hypothesis
Does the flagellum of Pseudomonas aeruginosa play a role in its resistance to clearance by surfactant protein A?
Conclusion
The flagellum of Pseudomonas aeruginosa is crucial for resisting membrane permeabilization and clearance by surfactant protein A.
Supporting Evidence
- Flagellar mutants were more susceptible to SP-A-mediated membrane permeabilization.
- Nonmucoid, motile revertants of CF isolates reacquired resistance to SP-A-mediated membrane permeabilization.
- SP-A did not enhance phagocytosis of flagellar mutants compared to wild-type strains.
Takeaway
Pseudomonas aeruginosa needs its flagella to avoid being killed by a protein in the lungs called surfactant protein A.
Methodology
The study used genetically-engineered mice and a library of Pseudomonas aeruginosa mutants to assess the role of flagella in resistance to surfactant protein A.
Potential Biases
Potential bias in the selection of mutants and the specific mouse models used.
Limitations
The study primarily focused on specific mutants and may not represent all strains of Pseudomonas aeruginosa.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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