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New blood test could help millions with gastrointestinal disorders

Date:
October 16, 2013
Source:
Cedars-Sinai Medical Center
Summary:
For the first time, a simple blood test may be the best way to determine if a patient is suffering from Irritable Bowel Syndrome (IBS), or another serious condition such as Inflammatory Bowel Disease (IBD,).

For the first time, a simple blood test may be the best way to determine if a patient is suffering from Irritable Bowel Syndrome (IBS), or another serious condition such as Inflammatory Bowel Disease (IBD,) according to Cedars-Sinai physician researcher Mark Pimentel, MD, lead author of a multicenter clinical trial.

Researchers conclusively identified a test for antibodies that form against a particular protein, vinculin, found in the guts of patients, many of whom suffered acute gastroenteritis at some point.

"This is a major breakthrough. It is the first test with a high specificity for IBS, likely based on a pathological mechanism of the disease," said Pimentel, the director of the Cedars-Sinai GI Motility Program and the GI Motility Laboratory. Pimentel is co-author of the study and results were presented for the first time this week at the American College of Gastroenterology's 78th Annual Scientific Meeting in San Diego, Calif.

In the study, 221 patients were evaluated; some had a diagnosis of IBS, some were diagnosed with IBD and some were healthy, with no symptoms. Anti-vinculin antibodies were significantly elevated in IBS patients as compared to those with IBD or those who were healthy.

"Until this study, there had been no accurate biomarkers identified specifically for IBS. The new blood test has the potential to distinguish IBS from IBD and reduce the need for unnecessary testing, expense and years of suffering," says Pimentel.

Irritable Bowel Syndrome is the most common gastrointestinal disorder in the U.S., afflicting 30 million people. Food poisoning has been identified as a significant risk factor for developing the disorder which is characterized by a cluster of symptoms including diarrhea, bloating and abdominal pain. But millions of patients are never diagnosed correctly. A simple blood test at the first sign of symptoms means patients who have IBS could get effective treatment sooner.

More than a decade ago, Pimentel went up against the conventional medical understanding of IBS when his research suggested the overgrowth of bacteria in the gut was a contributing cause of the condition. Today, antibiotics play a key therapeutic role in bringing relief to millions of patients. A definitive blood test for IBS would represent a significant new development.


Story Source:

The above story is based on materials provided by Cedars-Sinai Medical Center. Note: Materials may be edited for content and length.


Cite This Page:

Cedars-Sinai Medical Center. "New blood test could help millions with gastrointestinal disorders." ScienceDaily. ScienceDaily, 16 October 2013. <www.sciencedaily.com/releases/2013/10/131016095939.htm>.
Cedars-Sinai Medical Center. (2013, October 16). New blood test could help millions with gastrointestinal disorders. ScienceDaily. Retrieved April 20, 2014 from www.sciencedaily.com/releases/2013/10/131016095939.htm
Cedars-Sinai Medical Center. "New blood test could help millions with gastrointestinal disorders." ScienceDaily. www.sciencedaily.com/releases/2013/10/131016095939.htm (accessed April 20, 2014).

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