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Published on: October 22, 2013
Campylobacter jejuni-mediated disease pathogenesis: an update
Matthias Zilbauer1, Nick Dorrell, Brendan W Wren
1Infectious Diseases and Microbiology Unit, Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK. m.zilbauer@ich.ucl.ac.uk <m.zilbauer@ich.ucl.ac.uk>
Insights
Campylobacter jejuni infection causes widespread diarrheal disease, especially in young children. Recent genomic insights are advancing our understanding of its pathogenesis and host immune responses.
Area of Science:
- Microbiology
- Immunology
- Infectious Diseases
Background:
- Campylobacter jejuni is the leading cause of bacterial diarrhea globally.
- Young children are the most susceptible population to C. jejuni infections.
- Severe post-infectious complications, like Guillain-Barré syndrome, can arise.
Purpose of the Study:
- To highlight recent advancements in C. jejuni research.
- To focus on disease pathogenesis and early host immune responses.
- To explore the role of glycosylation systems in bacterial virulence.
Main Methods:
- Genomic sequence analysis of various C. jejuni strains.
- Investigation of bacterial glycosylation systems (O- and N-linked).
- Review of current literature on host-pathogen interactions.
Main Results:
- Genome sequencing has accelerated research into C. jejuni genetics and pathogenesis.
- C. jejuni possesses unique O- and N-linked glycosylation systems.
- These systems likely influence bacterial virulence, survival, and host interactions.
Conclusions:
- Understanding C. jejuni pathogenesis is crucial due to its significant health burden.
- Glycosylation systems represent a key area for modulating virulence and host response.
- Further research is needed to fully elucidate host immunity and disease mechanisms.
Abstract:
Infection by Campylobacter jejuni is considered to be the most prevalent cause of bacterial-mediated diarrhoeal disease worldwide. Both in the developing and the developed world, young children remain most susceptible. Although disease is generally mild and self-limiting, severe post-infectious complications such as Gullain-Barré syndrome may occur. Despite the significant health burden caused by the organism, our current understanding of disease pathogenesis remains in its infancy. Elucidation of the genome sequences of many different C. jejuni strains in recent years has started to accelerate research in Campylobacter genetics, pathogenesis and host immunity in response to infection. Campylobacter jejuni is the first prokaryote shown to code for both O- and N-linked glycosylation systems, a feature that is likely to not only modulate bacterial virulence and survival, but also influence host-pathogen interactions and disease outcome. Here recent developments in C. jejuni research, with a particular focus on disease pathogenesis including early host immune responses, are highlighted.
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