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Bacterial overgrowth as a cause of irritable bowel syndrome.
Curr Opin Gastroenterol. 2006 Nov; 22(6):669-73.CO

Abstract

PURPOSE OF REVIEW

To review recently published studies investigating any association between gut flora and symptoms of irritable bowel syndrome.

RECENT FINDINGS

Experimental studies demonstrate associations between gut flora, gut motility, mucosal inflammation and visceral hypersensitivity. Scientific bases for possible benefits of selected probiotics on irritable bowel symptoms have been identified. Disturbances in viable counts of fecal flora have been demonstrated in patients with irritable bowel syndrome. Results of studies based on breath tests are conflicting as to whether the prevalence of small intestinal bacterial overgrowth is increased in this group. Nonetheless, a longitudinal analysis based on bacteriological assessments of serial small intestinal aspirates suggests that this entity should be considered in patients with irritable bowel symptoms, especially in the setting of predisposition to bacterial overgrowth. Clinical trials of probiotic treatment for irritable bowel syndrome have yielded conflicting results.

SUMMARY

Recent studies provide increasing support for the concept that disturbances in gut flora occur in patients with irritable bowel syndrome and that such abnormalities may contribute to irritable bowel syndrome-type symptoms. The relative importance of disturbed gut flora to symptom pathogenesis, along with the therapeutic potential of modulation of the gut flora for amelioration of irritable bowel syndrome symptoms, however, remains to be fully defined.

Authors+Show Affiliations

Gastrointestinal and Liver Unit and University of New South Wales, Sydney, NSW, Australia. sriordan@ozemail.com.auNo affiliation info available

Pub Type(s)

Journal Article
Review

Language

eng

PubMed ID

17053447

Citation

Riordan, Stephen M., and Robert Kim. "Bacterial Overgrowth as a Cause of Irritable Bowel Syndrome." Current Opinion in Gastroenterology, vol. 22, no. 6, 2006, pp. 669-73.
Riordan SM, Kim R. Bacterial overgrowth as a cause of irritable bowel syndrome. Curr Opin Gastroenterol. 2006;22(6):669-73.
Riordan, S. M., & Kim, R. (2006). Bacterial overgrowth as a cause of irritable bowel syndrome. Current Opinion in Gastroenterology, 22(6), 669-73.
Riordan SM, Kim R. Bacterial Overgrowth as a Cause of Irritable Bowel Syndrome. Curr Opin Gastroenterol. 2006;22(6):669-73. PubMed PMID: 17053447.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bacterial overgrowth as a cause of irritable bowel syndrome. AU - Riordan,Stephen M, AU - Kim,Robert, PY - 2006/10/21/pubmed PY - 2007/1/24/medline PY - 2006/10/21/entrez SP - 669 EP - 73 JF - Current opinion in gastroenterology JO - Curr Opin Gastroenterol VL - 22 IS - 6 N2 - PURPOSE OF REVIEW: To review recently published studies investigating any association between gut flora and symptoms of irritable bowel syndrome. RECENT FINDINGS: Experimental studies demonstrate associations between gut flora, gut motility, mucosal inflammation and visceral hypersensitivity. Scientific bases for possible benefits of selected probiotics on irritable bowel symptoms have been identified. Disturbances in viable counts of fecal flora have been demonstrated in patients with irritable bowel syndrome. Results of studies based on breath tests are conflicting as to whether the prevalence of small intestinal bacterial overgrowth is increased in this group. Nonetheless, a longitudinal analysis based on bacteriological assessments of serial small intestinal aspirates suggests that this entity should be considered in patients with irritable bowel symptoms, especially in the setting of predisposition to bacterial overgrowth. Clinical trials of probiotic treatment for irritable bowel syndrome have yielded conflicting results. SUMMARY: Recent studies provide increasing support for the concept that disturbances in gut flora occur in patients with irritable bowel syndrome and that such abnormalities may contribute to irritable bowel syndrome-type symptoms. The relative importance of disturbed gut flora to symptom pathogenesis, along with the therapeutic potential of modulation of the gut flora for amelioration of irritable bowel syndrome symptoms, however, remains to be fully defined. SN - 0267-1379 UR - https://www.unboundmedicine.com/medline/citation/17053447/Bacterial_overgrowth_as_a_cause_of_irritable_bowel_syndrome_ L2 - https://doi.org/10.1097/01.mog.0000245544.80160.46 DB - PRIME DP - Unbound Medicine ER -