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Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
Published on: February 23, 2014
Pathogenesis, treatment, and prevention of pneumococcal pneumonia
Tom van der Poll1, Steven M Opal
1Centre for Infection and Immunity Amsterdam, Centre for Experimental and Molecular Medicine, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands. t.vanderpoll@amc.uva.nl
Abstract:
Pneumococcus remains the most common cause of community-acquired pneumonia worldwide. Streptococcus pneumoniae is well adapted to people, and is a frequent inhabitant of the upper airways in healthy hosts. This seemingly innocuous state of colonisation is a dynamic and competitive process in which the pathogen attempts to engage the host, proliferate, and invade the lower airways. The host in turn continuously deploys an array of innate and acquired cellular and humoral defences to prevent pneumococci from breaching tissue barriers. Discoveries into essential molecular mechanisms used by pneumococci to evade host-sensing systems that are designed to contain the pathogen provide new insights into potential treatment options. Versatility of the genome of pneumococci and the bacteria's polygenic virulence capabilities show that a multifaceted approach with many vaccine antigens, antibiotic combinations, and immunoadjuvant therapies will be needed to control this microbe.
Insights
Streptococcus pneumoniae causes pneumonia worldwide. Understanding how this bacterium evades host defenses reveals new strategies for vaccines and antibiotics to combat pneumococcal infections.
Area of Science:
- Microbiology
- Immunology
- Infectious Diseases
Background:
- Streptococcus pneumoniae is a leading cause of community-acquired pneumonia globally.
- It commonly colonizes the upper airways of healthy individuals.
- Colonization is a dynamic process involving pathogen proliferation and host invasion.
Purpose of the Study:
- To explore molecular mechanisms of pneumococcal evasion of host defenses.
- To identify potential therapeutic targets for controlling pneumococcal infections.
Main Methods:
- Analysis of molecular mechanisms used by Streptococcus pneumoniae.
- Investigation of host-pathogen interactions during colonization and invasion.
Main Results:
- Pneumococci employ sophisticated strategies to evade host-sensing systems.
- Understanding these evasion tactics offers insights into novel treatment approaches.
Conclusions:
- A multifaceted approach is necessary to control Streptococcus pneumoniae.
- This includes diverse vaccine antigens, antibiotic combinations, and immunoadjuvant therapies.
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