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New, 'designer' fiber may help address fiber intolerance and ease IBS symptoms
Date:1/16/2014

(CHICAGO) A newly-developed, "designer" dietary fiber with an added potential prebiotic effect may eliminate the side effects of current treatment for Irritable Bowel Syndrome (IBS) which affects 10-20 percent of the population, disproportionately women.

The collaboration between a gastroenterologist at Rush and a carbohydrate chemist at Purdue University led to the development of the new product, a natural starch derived from a mixture of seaweed and starch in which the release of starch fiber in the gastrointestinal tract can be delayed, slowed and controlled to occur in the colon, rather than in the stomach and upper intestine.

"This new product prevents the discomfort and bloating associated with current fiber therapies, while getting our new fiber into the colon and specifically distal colon where traditional fiber products typically do not reach and where many diseases of colon-like cancers develop," said Dr. Ece Mutlu, principal investigator the phase II trial that will begin at Rush in January 2014. "This can provide an effective treatment for IBS, decrease the risk of colon cancer and possibly inflammatory diseases like colitis," she added. The study seeks 200 people who have been diagnosed with IBS and constipation.

In an earlier Phase I study with 60 patients suffering from constipation, the newly designed fiber was shown to be safe, better tolerated and with fewer side effects than currently available fiber treatments for constipation, and it had a positive effect on intestinal microbiota composition by promoting the growth of "healthy" bacteria in the colon.

"We wanted to create a fiber with a slow rate of fermentation to avoid rapid expansion of the gut and thus decrease the likelihood of common side effects of conventionally used fibers like bloating," said Dr. Ali Keshavarzian, professor and director of gastroenterology at Rush.

The fiber is also designed to produce a high level of a short chain
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Contact: Nancy DiFiore
nancy_difiore@rush.edu
312-942-5159
Rush University Medical Center
Source:Eurekalert

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