In addition to the IL2/IL21 locus, we observed association of the TT genotype of SNP rs1545620 in MYO9B with UC (P = 0.0169; OR = 0.29, 95% CI 0.11-0.78) and association of rs17375018 in IL23R with pancolitis in Chinese UC patients (P = 0.002; OR = 2.38, 95% CI 1.41-4.02).
Genome-wide association studies (GWAS) in several populations have demonstrated significant association of the IL23R gene with IBD (Crohn's disease (CD) and ulcerative colitis (UC)) and psoriasis, suggesting that perturbation of the IL-23 signaling pathway is relevant to the pathophysiology of these diseases.
Most of the divergence in allele frequency among CD and UC was noted in NOD2/autophagy pathway SNPs, while most SNPs with similar frequencies were in IL-22/23 Th17, adaptive immunity, and barrier pathways.
We have successfully implemented NOD2/CARD15 HRMA assays, which may contribute to the development of genetic profiles for risk prediction of developing CD and for differential diagnosis of CD vs. UC.
One hundred and eighty unrelated IBD patients [57 Crohn's disease (CD) and 123 ulcerative colitis (UC)] and 186 healthy controls were genotyped for the following known genetic susceptibility variants: NOD2 - Arg702Trp (rs2066844), rs2066845" genes_norm="64127">Gly908Arg (rs2066845) and Leu1007insC (rs2066847), as well as IL23R - rs11209026;rs901312933" genes_norm="149233;55054">Arg381Gln (rs11209026) and ATG16L1 - rs2241880;s2241880;rs1384936174" genes_norm="55054;64127">Thr300Ala (rs2241880).
The presence of NOD2 allelic variants was primarily associated with fibrostenosis, secondarily with small bowel disease and small bowel surgery, and was inversely associated with UC-like disease.
One hundred and eighty unrelated IBD patients [57 Crohn's disease (CD) and 123 ulcerative colitis (UC)] and 186 healthy controls were genotyped for the following known genetic susceptibility variants: NOD2 - Arg702Trp (rs2066844), rs2066845" genes_norm="64127">Gly908Arg (rs2066845) and Leu1007insC (rs2066847), as well as IL23R - rs11209026;rs901312933" genes_norm="149233;55054">Arg381Gln (rs11209026) and ATG16L1 - rs2241880;s2241880;rs1384936174" genes_norm="55054;64127">Thr300Ala (rs2241880).
The present study was aimed at describing expression of innate immunity genes (NOD2, RIP2, α-defensins HD5 and HD6) in inflamed colon and in ileum of children with ulcerative colitis.
The present study was aimed at describing expression of innate immunity genes (NOD2, RIP2, α-defensins HD5 and HD6) in inflamed colon and in ileum of children with ulcerative colitis.
In contrast, PAB and GAB antibodies were not associated with NOD2/CARD15 or TLR4, response to medical therapy, or need for surgery.No associations were found in UC.
Novel genetic risk markers for ulcerative colitis in the IL2/IL21 region are in epistasis with IL23R and suggest a common genetic background for ulcerative colitis and celiac disease.
The number of NOD2(+) intestinal MCs was significantly increased in the Crohn's disease (CD) specimens compared to Ulcerative colitis (UC) specimens and controls.