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Review: Do patients with functional gastrointestinal disorders have an altered gut flora?

Alimentary Pharmabiotic Centre, Department of Medicine, University College Cork, Cork, Ireland e.quigley{at}ucc.ie

The description of the de novo development of irritable bowel syndrome (IBS) following an episode of bacterial gastroenteritis (postinfectious IBS) illustrated the potential for a luminal factor (a bacterial pathogen) to cause this common gastrointestinal ailment. As a consequence of these and other observations as well as results of experiments involving animal models, the enteric flora and the immune response that it generates in the host have, somewhat surprisingly, come centre-stage in IBS research with their potential to induce the pathophysiological changes that are associated with IBS. While evidence for immune dysfunction both in the mucosa and systemically continues to accumulate, methodological limitations have hampered a full delineation of the nature of the microbiota in IBS. The latter is eagerly awaited and may yet provide a firm rationale for the use of certain probiotics and antibiotics in IBS, whose benefits have now been described with some consistency.

Key Words: irritable bowel syndrome • gastroenteritis • probiotics

Therapeutic Advances in Gastroenterology, Vol. 2, No. 4 Suppl, s23-s30 (2009)
DOI: 10.1177/1756283X09335636


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