Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0011854 (type 1 diabetes)
 20,749 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Three variants in the caspase recruitment domain 15/nucleotide-binding oligomerization domain 2 (CARD15/NOD2) gene have been shown to be associated with Crohn's disease (CD). There is a strong support for shared genetic determinants between various autoimmune and inflammatory diseases. In particular, linkage of type 1 diabetes (T1D) and other autoimmune and inflammatory diseases has been reported on chromosome 16, encompassing the region containing the CARD15 gene. We therefore considered this gene as a good candidate for the T1D locus mapped to this region, and we tested the three CARD15 variants in the susceptibility to T1D in two independent settings: family based association analysis in Scandinavian multiplex families that we previously showed to be linked to this region, and case/control association study in a large cohort of French diabetic patients. We found no evidence for association of these variants with T1D overall, nor in subgroups of patients with or without the major risk genotypes at HLA-DRB1, at insulin (INS), or positive or negative for autoantibodies specific to other autoimmune diseases. Our results do not support a role for CD-associated CARD15 variants in the susceptibility to T1D, and suggest that another gene is responsible for the shared susceptibility between autoimmune and inflammatory diseases mapping to this region.
 ...
PMID:Crohn's disease associated CARD15 (NOD2) variants are not involved in the susceptibility to type 1 diabetes. 1619 36

Nucleotide-binding oligomerization domain-containing protein 2 (Nod2) is an innate immune receptor. To investigate the role of Nod2 in susceptibility to the autoimmune disease, type 1 diabetes mellitus (T1DM), we generated Nod2-/- non-obese diabetic (NOD) mice. The Nod2-/-NOD mice had different composition of the gut microbiota compared to Nod2+/+NOD mice and were significantly protected from diabetes, but only when housed separately from Nod2+/+NOD mice. This suggested that T1DM susceptibility in Nod2-/-NOD mice is dependent on the alteration of gut microbiota, which modulated the frequency and function of IgA-secreting B-cells and IL-10 promoting T-regulatory cells. Finally, colonizing germ-free NOD mice with Nod2-/-NOD gut microbiota significantly reduced pro-inflammatory cytokine-secreting immune cells but increased T-regulatory cells. Thus, gut microbiota modulate the immune system and T1D susceptibility. Importantly, our study raises a critical question about the housing mode in the interpretation of the disease phenotype of genetically-modified mouse strains in T1DM studies.
 ...
PMID:Nucleotide-binding oligomerization domain-containing protein 2 (Nod2) modulates T1DM susceptibility by gut microbiota. 2859 85