Irritable Bowel Syndrome Identifying Genetic Defect

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Irritable Bowel Syndrome Identifying Genetic Defect

Researchers identify genetic defect that causes a subset of irritable bowel syndrome

Identifying Genetic Defect, Is (IBS) caused by genetics, diet, past trauma, anxiety? All are thought to play a role, but now, for the first time, researchers have reported a defined genetic defect that causes a subset of IBS. The research was published in the journal Gastroenterology.

Researchers estimate that approximately 15 to 20 percent of the Western world has IBS. It is a common disorder that affects the large intestine. Most patients with the disorder commonly experience symptoms of cramping, , gas, and constipation. Most treatments for IBS target these symptoms.

Researchers found that patients with a subset of IBS have a specific genetic defect, a mutation of the SCN5A gene. This defect causes patients to have a disruption in bowel function, by affecting the Nav1.5 channel, a sodium channel in the gastrointestinal smooth muscle and pacemaker cells.

The research is in early stages, but the results of this study give researchers hope of finding therapies for these patients.

This gives us hope that from only treating symptoms of the disease, we can now work to find disease-modifying agents, which is where we really want to be to affect long-term treatment of IBS, says Gianrico Farrugia, M.D., a study author, Mayo Clinic gastroenterologist and director of the Mayo Clinic Center for Individualized Medicine.

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