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Intestinal microbiota in functional bowel disorders: a Rome foundation report
Magnus Simrén1, Giovanni Barbara, Harry J Flint
1Department of Internal Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-41345, Sweden. magnus.simren@medicine.gu.se
Gut
|June 26, 2012
Summary
Gut microbiota alterations are implicated in functional gastrointestinal disorders (FGID), particularly irritable bowel syndrome (IBS). Emerging research explores microbiota-directed therapies for FGID, showing promising results despite study limitations.
Area of Science:
- Gastroenterology
- Microbiology
- Immunology
Background:
- Functional gastrointestinal disorders (FGID), including irritable bowel syndrome (IBS), are increasingly linked to gut host-microbial interactions.
- Infectious gastroenteritis can precipitate FGID in susceptible individuals, highlighting the role of microbial disturbances.
- Small intestinal bacterial overgrowth in IBS has been debated due to reliance on unvalidated breath tests.
Framework:
- Culture-independent molecular techniques, such as 16S rRNA profiling, offer advanced insights into FGID microbiota composition.
- Studies reveal significant quantitative and qualitative shifts in mucosal and fecal gut microbiota in FGID patients, especially IBS.
- Current hypotheses propose that dysbiotic microbiota trigger immune responses, increase gut permeability, and affect neural pathways.
Implementation:
- Microbiota-based interventions, including dietary changes, prebiotics, probiotics, synbiotics, and antibiotics, are under investigation.
- Existing clinical trials show promise but are often limited by small sample sizes and suboptimal study designs.
- This review critically assesses microbiota's role in FGID pathogenesis and evaluates microbiota-directed therapeutic strategies.
Implications:
- The gut microbiota is a viable therapeutic target for managing FGID.
- Further research is needed to refine microbiota-directed interventions for FGID.
- Clinical guidance is provided for modulating gut microbiota in IBS patients.
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