Abstract:
AIM:To assess whether polymorphisms in NOD2 and ATG16L1 affect cytokine responses and mycobacterium avium subspecies paratuberculosis (MAP) survival in monocytes from Crohn's disease (CD) patients. METHODS:Monocytes were isolated from peripheral blood of CD patients of known genotype for common single nucleotide polymorphisms of NOD2 and ATG16L1. Monocytes were challenged with MAP and bacterial persistence assessed at subsequent time-points. Cytokine responses were assayed using a Milliplex multi-analyte profiling assay for 13 cytokines. RESULTS:Monocytes heterozygous for a NOD2 polymorphism (R702W, P268S, or 1007fs) were more permissive for growth of MAP (P = 0.045) than those without. There was no effect of NOD2 genotype on subsequent cytokine expression. The T300A polymorphism of ATG16L1 did not affect growth of MAP in our model (P = 0.175), but did increase expression of cytokines interleukin (IL)-10 (P = 0.047) and IL-6 (P = 0.019). CONCLUSION:CD-associated polymorphisms affected the elimination of MAP from ex vivo monocytes (NOD2), or expression of certain cytokines (ATG16L1), implying independent but contributory roles in the pathogenesis of CD.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Glubb DM,Gearry RB,Barclay ML,Roberts RL,Pearson J,Keenan JI,McKenzie J,Bentley RWdoi
10.3748/wjg.v17.i23.2829subject
Has Abstractpub_date
2011-06-21 00:00:00pages
2829-37issue
23eissn
1007-9327issn
2219-2840journal_volume
17pub_type
杂志文章abstract::Coeliac disease (CD) is a complex condition resulting from an interplay between genetic and environmental factors. When diagnosing the condition, serological testing and genotyping are useful in excluding CD, although the gold standard of testing is currently histopathological examination of the small intestine. There...
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