TITLE

High prevalence of Mycobacterium avium subspecies paratuberculosis IS 900 DNA in gut tissues from individuals with Crohn's disease

AUTHOR(S)
Autschbach, F.; Eisold, S.; Hinz, U.; Zinser, S.; Linnebocher, M.; Giese, I.; Löffler, I.; Büchler, M. W.; Schmidt, J.
PUB. DATE
July 2005
SOURCE
Gut;Jul2005, Vol. 54 Issue 7, p944
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background and aims: Conflicting results exist about the presence of Mycobacterium avium subspecies paratuberculosis (MAP) specific IS 900 DNA in Crohn's disease (CD) tissues. Therefore, we examined IS 900 in a large number of gut samples from patients with CD (n = 100) and ulcerative colitis (UC, n = 100), and in non-inflamed control tissues (nIBD, n =100). We hypothesised that IS 900 DNA detection might be associated with distinct clinical phenotypic characteristics in CD. Methods: The prevalence of MAP DNA in surgically resected tissues was examined using a mechanical-enzymatic disruption technique and nested IS 900 specific polymerase chain reaction (PCR). CD patients were stratified according to the criteria of the Vienna classification and other clinical characteristics. Results: IS 900 PCR detection rate was significantly higher in CD tissue samples (52%) than in UC (2%) or nIBD (5%) specimens (p<0.0001). In CD patients, IS 900 DNA was detected in samples from both diseased small bowel (47%) as well as from the colon (61%). No firm association between MAP specific IS 900 detection rates and clinical phenotypic characteristics in CD could be established. However, corticosteroid medication constituted a factor which tended to have a negative influence on IS 900 DNA detection rates in CD (p<0.01). Conclusions: The presence of MAP specific IS 900 DNA is a predominant feature of CD. Therapeutic intervention against MAP might represent a potential target for disease mitigation in Crohn's disease.
ACCESSION #
17496261

 

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