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Published on: November 5, 2019
Mechanisms of meningococcal colonisation
Kaushali Trivedi1, Christoph M Tang, Rachel M Exley
1Centre for Molecular Microbiology and Infection, Faculty of Medicine, Flowers Building, Imperial College London, London SW7 2AZ, UK.
Abstract:
Despite advances against infectious diseases over the past century, Neisseria meningitidis remains a major causative agent of meningitis and septicaemia worldwide. Its adaptation for survival in the human nasopharynx makes the meningococcus a highly successful commensal bacterium. Recent progress has been made in understanding the mechanisms that enable neisserial colonisation, in terms of the role of type IV pili, the impact of other adhesins, biofilm formation, nutrient acquisition and resistance to host immune defences. Refinements in cell-based and in vivo models will lead to improved understanding of the colonisation process, and hopefully to more effective vaccines and therapeutic strategies.
Insights
Neisseria meningitidis causes meningitis and septicaemia globally. Understanding its adaptation and colonization mechanisms, including pili and immune resistance, is key to developing new vaccines and treatments.
Area of Science:
- Microbiology
- Infectious Diseases
- Immunology
Background:
- Neisseria meningitidis is a significant global cause of meningitis and septicaemia.
- It thrives as a commensal bacterium in the human nasopharynx, highlighting its adaptive success.
Purpose of the Study:
- To explore the mechanisms enabling Neisseria meningitidis colonization.
- To identify factors contributing to its survival and virulence.
Main Methods:
- Review of recent research on neisserial colonization.
- Analysis of the roles of type IV pili, adhesins, and biofilm formation.
- Examination of nutrient acquisition and host immune defense evasion strategies.
Main Results:
- Type IV pili, adhesins, and biofilm formation are crucial for colonization.
- Nutrient acquisition and resistance to host immunity are vital for survival.
- Advances in cell-based and in vivo models are improving understanding.
Conclusions:
- Understanding Neisseria meningitidis colonization mechanisms is advancing.
- Improved models are expected to facilitate the development of more effective vaccines and therapies against meningococcal diseases.
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Bacterial Meningitis II: Pathophysiology
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