Antibodies to flagellin indicate reactivity to bacterial antigens in IBS patients

Schoepfer, A M; Schaffer, T; Seibold-Schmid, B; Müller, S; Seibold, F (2008). Antibodies to flagellin indicate reactivity to bacterial antigens in IBS patients. Neurogastroenterology and motility, 20(10), pp. 1110-8. Oxford: Blackwell Science 10.1111/j.1365-2982.2008.01166.x

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One of the several possible causes of irritable bowel syndrome (IBS) is thought to be low-grade mucosal inflammation. Flagellin, the primary structural component of bacterial flagellae, was shown in inflammatory bowel disease patients to activate the innate and adaptive immunity. It has not yet been conclusively established if IBS patients show reactivity to luminal antigens. In 266 patients [112 IBS, 61 Crohn's disease (CD), 50 ulcerative colitis (UC) and 43 healthy controls (HC)], we measured antibodies to flagellin (FAB, types A4-Fla2 and Fla-X), anti-Saccharomyces cerevisiae antibodies (ASCA) (both ELISA), antipancreas antibodies (PAB) and perinuclear antineutrophil cytoplasmatic antibodies (p-ANCA) (both IF). All IBS patients had normal fecal calprotectin (mean 21 microg mL(-1), SD 6.6) and fulfilled the ROME II criteria. Frequencies of antibodies in patients with IBS, CD, UC and HC, respectively, are as follows (in per cent): antibodies against A4-Fla2: 29/48/8/7; antibodies against Fla-X: 26/52/10/7; ASCA: 6/59/0/2; p-ANCA: 0/10/52/0; and PAB: 0/28/0/0. Antibodies against A4-Fla2 and Fla-X were significantly more frequent in IBS patients than in HC (P = 0.004 and P = 0.009). Antibodies to A4-Fla2 and Fla-X were significantly more frequent in IBS patients with antecedent gastroenteritis compared to non-postinfectious IBS patients (P = 0.002 and P = 0.012). In contrast to ASCA, PAB and p-ANCA, antibodies against A4-Fla2 and Fla-X were found significantly more often in IBS patients, particularly in those with postinfectious IBS, compared to HC. This observation supports the concept that immune reactivity to luminal antigens has a putative role in the development of IBS, at least in a subset of patients.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Visceral Surgery and Medicine > Gastroenterology
UniBE Contributor:	Schöpfer, Alain, Schaffer, Thomas, Seibold-Schmid, Beatrice, Müller, Stefan Jürg, Seibold, Frank Werner
ISSN:	1350-1925
ISBN:	18694443
Publisher:	Blackwell Science
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 15:05
Last Modified:	05 Dec 2022 14:20
Publisher DOI:	10.1111/j.1365-2982.2008.01166.x
PubMed ID:	18694443
Web of Science ID:	000259237300005
URI:	https://boris.unibe.ch/id/eprint/28397 (FactScience: 120525)