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Interleukin-10 (IL-10) genotypes in inflammatory bowel disease
A Tagore1, W M Gonsalkorale, V Pravica
1School of Biological Sciences, University of Manchester, UK.
Tissue Antigens
|November 7, 1999
Summary
Individuals with a genetic predisposition for lower Interleukin-10 (IL-10) production may face a higher risk of developing inflammatory bowel disease (IBD), particularly ulcerative colitis (UC). This finding links specific IL-10 genotypes to IBD susceptibility.
Area of Science:
- Immunogenetics
- Gastroenterology
Background:
- Interleukin-10 (IL-10) is a key anti-inflammatory cytokine.
- Human IL-10 production is genetically determined, influencing high or low producer phenotypes.
Purpose of the Study:
- To investigate the association between IL-10 genotypes and idiopathic inflammatory bowel disease (IBD).
- To test the hypothesis that IBD patients are more likely to possess low IL-10 producer genotypes.
Main Methods:
- DNA extraction from blood cells of Crohn's disease (CD) and ulcerative colitis (UC) patients.
- IL-10 genotyping to identify high (-1082*G allele) and low producer genotypes.
Main Results:
- The high IL-10 producer allele frequency was significantly lower in the overall IBD group (41% vs. 51%, P=0.03).
- UC patients showed a decreased frequency of the high IL-10 producer allele compared to controls (37% vs. 51%, P=0.04).
Conclusions:
- A significant association exists between IL-10 genotypes and IBD.
- Genetic predisposition to lower IL-10 production appears to increase the risk for developing IBD, especially UC.