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Infectious serologies and autoantibodies in inflammatory bowel disease: insinuations at a true pathogenic role.

Abstract：

:The aim of this study was to reevaluate the role of infection in inflammatory bowel disease (IBD). Sera from 119 patients with IBD [80 with Crohn's disease (CD); 39 with ulcerative colitis] and 98 healthy controls were assessed using the Bio-Rad BioPlex 2200 for the presence of Toxoplasma gondii, cytomegalovirus, Epstein-Barr virus, Treponema pallidum, and Saccharomyces cerevisiae. Hepatitis B virus, hepatitis C virus (HCV), and anti-Helicobacter pylori antibodies were assessed by ELISA. In addition, sera were tested for a panel of antibodies associated with thrombophilia as well as various autoantibodies. Titers of antibodies toward HCV and T. gondii, and S. cerevisiae were higher in IBD patients than in controls, while the H. pylori autoantibodies were less prevalent among the patient population. Several thrombophilia-associated antibodies were more common in CD patients, and a single patient had a thromboembolic event. Our results show an excess of anti-HCV and anti-T. gondii antibodies among patients with IBD compared to healthy controls. Whereas the former may be the result of immunosuppression from the inflammatory disease itself or from the medications used to treat it, the latter association suggests that T. gondii is involved in the etiopathogenesis of IBD, and especially CD, in humans, as has been shown in the murine model. However, our findings also reiterate the positive association between CD and anti-S. cerevisiae antibodies as well as the negative association with H. pylori infections. These, in turn, lend indirect support to the "hygiene hypothesis" in IBD as well as the newly proposed role of commensal bacteria in the initiation of the disease process.

journal_name

Ann N Y Acad Sci

journal_title

Annals of the New York Academy of Sciences

authors

Lidar M,Langevitz P,Barzilai O,Ram M,Porat-Katz BS,Bizzaro N,Tonutti E,Maieron R,Chowers Y,Bar-Meir S,Shoenfeld Y

doi

10.1111/j.1749-6632.2009.04673.x

subject

Has Abstract

pub_date

2009-09-01 00:00:00

pages

640-8

eissn

0077-8923

issn

1749-6632

pii

NYAS4673

journal_volume

1173

pub_type

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Infectious serologies and autoantibodies in inflammatory bowel disease: insinuations at a true pathogenic role.