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Published on: May 2, 2018
[Enterotoxigenic Bacteroides fragilis as a factor in diarrhea]
1Inönü Universitesi Tip Fakültesi, Mikrobiyoloji ve Klinik Mikrobiyoloji Anabilim Dali, Malatya.
Insights
Enterotoxigenic Bacteroides fragilis (ETBF) causes diarrheal diseases in children and adults. This review covers ETBF
Area of Science:
- Microbiology
- Gastroenterology
- Molecular Biology
Context:
- Diarrheal diseases remain a significant global health concern with unclear etiologies for many cases.
- Enterotoxigenic Bacteroides fragilis (ETBF) is implicated in diarrheal illnesses in children and adults.
- B. fragilis toxin (BFT) plays a role in intestinal pathophysiology.
Purpose:
- To review the molecular pathogenesis of ETBF.
- To summarize the epidemiology of ETBF infections.
- To discuss laboratory diagnostic methods for ETBF.
Summary:
- ETBF strains produce B. fragilis toxin (BFT), which stimulates intestinal secretion and causes cytotoxicity.
- BFT's role in inflammatory bowel disease and colon cancer is suggested through nuclear activation and oncogene expression.
- This review consolidates current knowledge on ETBF as a diarrheal pathogen.
Impact:
- Highlights the importance of ETBF in diarrheal disease etiology.
- Provides insights into the potential link between ETBF and chronic gastrointestinal conditions.
- Aids in understanding and diagnosing ETBF infections.
Abstract:
The etiology of almost half of the diarrheal diseases has not been cleared yet, in spite of modern diagnostic methods. Bacteroides fragilis strains which secrete an enterotoxin are termed as enterotoxigenic B.fragilis (ETBF). These strains are associated with diarrheal diseases in children above 1 year of age and in adults. B. fragilis toxin (BFT) stimulates intestinal secretion and in-vitro cytotoxic response in HT29/C1 cells. Recent studies suggest that BFT is related to inflammatory bowel disease and colon cancer by triggering nuclear activation with potential oncogene expression. In this review, the molecular pathogenesis, epidemiology and laboratory diagnosis of ETBF have been reviewed to focus on ETBF as a diarrheal agent.
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