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Enteropathogenic and enterohaemorrhagic Escherichia coli: more subversive elements
G Frankel1, A D Phillips, I Rosenshine
1Department of Biochemistry, Imperial College of Science, Technology and Medicine, London, UK. g.frankel@ic.ac.uk
Molecular Microbiology
|February 13, 1999
Summary
Enteropathogenic (EPEC) and enterohaemorrhagic Escherichia coli (EHEC) cause significant human illness by forming attaching and effacing (A/E) lesions in the intestine. Recent research advances have revolutionized understanding of EPEC pathogenesis and A/E lesion formation.
Area of Science:
- Microbiology
- Pathogenesis
- Molecular Biology
Background:
- Enteropathogenic (EPEC) and enterohaemorrhagic Escherichia coli (EHEC) are significant global health threats.
- These bacteria induce 'attaching and effacing' (A/E) lesions in the intestinal mucosa, disrupting epithelial cell function.
- EPEC, identified early in human disease, has had its pathogenic mechanisms elucidated since the late 1980s.
Purpose of the Study:
- To review recent breakthroughs in understanding EPEC pathogenesis.
- To highlight advancements in the molecular mechanisms underlying A/E lesion formation.
- To discuss new findings on bacterial colonization and host-pathogen interactions.
Main Methods:
- Review of recent scientific literature and data.
- Analysis of genetic basis for A/E lesion formation.
- Examination of signal transduction and protein translocation pathways.
Main Results:
- New data have revolutionized fundamental concepts of EPEC pathogenesis.
- Significant progress has been made in understanding the genetic basis of A/E lesion formation.
- Key developments include insights into host cell receptors and intestinal colonization mechanisms.
Conclusions:
- Recent research has significantly advanced the understanding of EPEC and EHEC pathogenesis.
- The molecular basis of A/E lesion formation is increasingly understood.
- These findings have broad implications for bacterial pathogenesis research.