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Genetic link found between spinal arthritis and inflammatory bowel disease
29 December 2010
Researchers at the University of Queensland in Australia have found that a form of spinal arthritis is genetically linked to Inflammatory Bowel Disease. Ankylosing Spondylitis (AS) is a common form of arthritis involving chronic inflammation particularly of the spinal and pelvic joints, which causes pain, stiffness, and often disability. AS patients appear to be highly susceptible to Inflammatory Bowel Disease (IBD), including Crohn's disease. Similarly, the development of AS is common in IBD patients.
In order to test whether genes associated with Crohn's disease are also associated with AS, Professor Matt Brown and his colleagues searched for known genetic markers of Crohn's disease in the genomes of more than 2700 AS patients, working with colleagues from England, North America and Canada. The results revealed that both AS and Crohn's disease share several similar genetic variations, and identified seven genes affecting both conditions.
When the researchers took a closer look at the function of the genes they had identified, they found that four of the genes are known to influence the activation of a recently discovered class of helper T-cells called Th17 cells. Identifying the involvement of these immune cells greatly increases what is known about how AS develops, and points to potential new therapies for this form of arthritis. This study highlights the value of studies that look into individual genes that might be involved in related diseases.
"It seemed likely that common pathogenic pathways may be acting in the development of both diseases" said Matt Brown.
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