Small intestinal bacterial overgrowth (SIBO) is a clinical condition characterized by a malabsorption syndrome due to an increase in microorganisms within the small intestine. The main mechanisms restricting bacterial colonization in the upper gut are the gastric acid barrier, mucosal and systemic immunity and intestinal clearance. When these mechanisms fail, bacterial overgrowth develops. Diarrhea, steatorrhea, chronic abdominal pain, bloating and flatulence are common symptoms and are similar to those observed in irritable bowel syndrome. Breath tests (glucose and/or lactulose breath tests) have been proposed as a sensitive and simple tool for the diagnosis of bacterial overgrowth, being non-invasive and inexpensive compared to the gold standard represented by the culture of intestinal aspirates. Antibiotic therapy is the cornerstone of SIBO treatment. Current SIBO treatment is based on empirical courses of broad-spectrum antibiotics since few controlled studies concerning the choice and duration of antibiotic therapy are available at present.
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- Small intestinal bacterial overgrowth
- Breath tests
- Irritable bowel syndrome
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Prof. Antonio Gasbarrini
Internal Medicine Department, Catholic University of Sacred Heart
Gemelli Hospital, Largo A. Gemelli, 8
IT–00168 Rome (Italy)
Tel. +39 06 3015 4294, Fax +39 06 3550 2775, E-Mail firstname.lastname@example.org
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Number of Figures : 0, Number of Tables : 0, Number of References : 19
Digestive Diseases (Clinical Reviews)
Vol. 25, No. 3, Year 2007 (Cover Date: September 2007)
Journal Editor: Malfertheiner, P. (Magdeburg)
ISSN: 0257–2753 (print), 1421–9875 (Online)
For additional information: http://www.karger.com/DDI
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