title: Mycobacterium avium subspecies paratuberculosis and Crohn's disease: a systematic review and meta-analysis.
abstract: This systematic review assesses the evidence for an association between Mycobacterium avium subspecies paratuberculosis (MAP) and Crohn's disease. We analysed 28 case-control studies comparing MAP in patients with Crohn's disease with individuals free of inflammatory bowel disease (IBD) or patients with ulcerative colitis. Compared with individuals free of IBD, the pooled odds ratio (OR) from studies using PCR in tissue samples was 7.01 (95% CI 3.95-12.4) and was 1.72 (1.02-2.90) in studies using ELISA in serum. ORs were similar for comparisons with ulcerative colitis patients (PCR, 4.13 [1.57-10.9]; ELISA, 1.88 [1.26-2.81]). The association of MAP with Crohn's disease seems to be specific, but its role in the aetiology of Crohn's disease remains to be defined.
authors: Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
authors: Martin
authors: M
authors: Feller
authors: Karin
authors: K
authors: Huwiler
authors: Roger
authors: R
authors: Stephan
authors: Ekkehardt
authors: E
authors: Altpeter
authors: Aijing
authors: A
authors: Shang
authors: Hansjakob
authors: H
authors: Furrer
authors: Gaby E
authors: GE
authors: Pfyffer
authors: Thomas
authors: T
authors: Jemmi
authors: Andreas
authors: A
authors: Baumgartner
authors: Matthias
authors: M
authors: Egger
mesh_terms: D016022:Case-Control Studies; D003424:Crohn Disease / Q000382:microbiology*; D006801:Humans; D009162:Mycobacterium avium; D016927:Mycobacterium avium subsp. paratuberculosis; D010283:Paratuberculosis / Q000453:epidemiology*; D018579:Patient Selection