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Is Mycobacterium avium subspecies paratuberculosis (MAP) associated with Crohn's Disease?

Patterson, J. M.; Winstead, C.; Milligan, K.

2021-09-27 gastroenterology
10.1101/2021.09.27.21263960 medRxiv
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ObjectiveThis retroactive meta-analysis assesses the relationship between Mycobacterium avium subspecies paratuberculosis (MAP) and Crohns Disease (CD). MethodsA meta-analysis of PCR- and culture-based studies was conducted to determine if there is a relationship between MAP and Crohns Disease. The chi-squared test of independence was also conducted to determine if MAP infection and Crohns disease onset are independent events. ResultsThe studies analyzed were able to provide evidence that Mycobacterium avium subspecies paratuberculosis is highly associated with Crohns disease. It is also shown that, regardless of detection method, MAP can effectively be detected in Crohns patients. ConclusionMAP is strongly connected with Crohns Disease. SummaryThis paper examines the incidence of MAP in the tissue of Crohns disease patients. We found evidence to support MAP being strongly associated with Crohns disease.

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