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Celiac Disease Health Center

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New Treatment for Celiac Disease?

Research Shows Blocking a Protein May Reverse Celiac Disease Symptoms
WebMD Health News
Reviewed by Laura J. Martin, MD

Feb. 9, 2011 -- Blocking an inflammatory protein called interleukin-15 (IL-15) may help treat the symptoms of celiac disease and prevent the development of celiac disease in certain at-risk people, according to new research in mice published in Nature.

Celiac disease is an autoimmune and inflammatory condition that is triggered by gluten, the protein found in wheat, barley, and rye. When people with celiac disease eat gluten, it triggers an inflammatory response that damages the lining of the small intestine. Symptoms include gas, bloating, cramping, and constipation. People with celiac disease are also at risk for nutritional shortfalls including vitamin B12, vitamin B1 (thiamine), vitamin K, vitamin D, calcium, iron, and folate. Risk factors for developing celiac disease include family history of celiac disease and/or a personal or family history of other autoimmune diseases, including rheumatoid arthritis (RA).

Gluten-free diets are the treatment of choice for celiac disease. Such foods are becoming increasingly available because of the dramatic uptick in rates of celiac disease and other conditions that may respond to gluten-free diets.

In the new study, researchers blocked IL-5 in mice genetically altered to have celiac disease and found that the disease symptoms were reversed, and the mice were once again able to eat gluten.

Is Blocking IL-15 the Key to Treating Celiac Disease?

“We have identified one mechanism by which people lose tolerance to gluten,” says author Bana Jabri, MD, PhD, an associate professor of medicine and pathology and co-director of the Digestive Disease Research Core Center at the University of Chicago. “IL-15 may be a critical element that drives the loss of tolerance to gluten, and we can now think about pathways to block it and potentially develop therapies for celiac disease.”

Medications that block IL-15 are being developed for other inflammatory diseases, including RA.

The new research also shows that retinoic acid, a vitamin-A derivative found in acne treatments such as Retin-A and Accutane, may be complicit in the onset of celiac disease.

Vitamin A in these patients is a bad idea,” she says. “Patients at risk should be careful about using retinoids." This may even include topical retinoids if they can enter the bloodstream, she says.

Those two molecules act together to promote inflammation, she says. “The vitamin A derivative seems to fuel the IL-15, but if you block IL-15, retinoids are OK,” she says.

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