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Chronic Bacterial Pathogens: Mechanisms of Persistence
Mariana X Byndloss1, Renee M Tsolis1
1Department of Medical Microbiology and Immunology, School of Medicine, University of California at Davis, Sacramento, CA 95817.
Microbiology Spectrum
|May 27, 2016
Summary
Chronic bacterial infections, like those caused by Brucella abortus and Salmonella Typhi, persist by evading immune responses. These diverse pathogens share common strategies for long-term colonization within the host
Area of Science:
- Microbiology
- Immunology
- Pathogenesis
Background:
- Many bacterial pathogens cause acute infections cleared by immunity.
- A subset establish persistent, lifelong infections.
- Chronic infection strategies vary across diverse bacterial species.
Purpose of the Study:
- Compare persistence strategies of Brucella abortus and Salmonella enterica serovar Typhi.
- Identify common immune evasion mechanisms used by these distinct pathogens.
- Understand chronic intracellular infections of the mononuclear phagocyte system.
Main Methods:
- Comparative analysis of bacterial pathogenesis.
- Review of host-pathogen interactions.
- Genomic and functional strategy comparison.
Main Results:
- Brucella abortus and Salmonella Typhi, despite genomic differences, share common persistence strategies.
- Both pathogens effectively evade immune clearance.
- Chronic intracellular infections are established within the mononuclear phagocyte system.
Conclusions:
- Distinct bacterial pathogens can employ convergent strategies for chronic infection.
- Understanding these shared mechanisms is crucial for developing treatments against persistent bacterial infections.
- The mononuclear phagocyte system is a key niche for chronic intracellular bacterial pathogens.
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