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How Fecal Transplant Eases Tough Infection

Goal is an easier delivery method for treating C. difficile

WebMD News from HealthDay

By Alan Mozes

HealthDay Reporter

TUESDAY, June 17, 2014 (HealthDay News) -- Patients suffering from the nasty bacterial infection known as Clostridium difficile often must choose between standard antibiotics and a procedure known as fecal transplantation to deal with the digestive tract disorder.

The fecal transplant involves harvesting good bacteria from the stool of a healthy donor and inserting it into the intestines of a sick patient.

The process often succeeds where antibiotics fail -- by restoring healthy bacteria and functioning to the recipient's gut, new research suggests. But the procedure is poorly understood and invasive.

Researchers want to fashion a new treatment with all the upside and none of the downside for treating recurrent C. difficile, one of the most common infections acquired in American health care settings.

"Basically what we're trying to do is figure out why fecal transplantation works," said Dr. Vincent Young, an associate professor in the division of infectious diseases at the University of Michigan in Ann Arbor.

"We know we have to replace the patient's bacteria. But we don't know what role they play once we do," Young added.

"It could be that the bacteria we use needs to be living. Or it could be that the bacteria produce something that we can isolate, and then deliver directly to patients without living bacteria and, therefore, without fecal matter. That's the hope," he said.

Young and his team published their findings in the May/June online edition of mBio.

The U.S. Centers for Disease Control and Prevention estimates that about 14,000 Americans die of C. difficile each year. Most at risk are older people who take antibiotics and also get medical care, the CDC noted. It's believed antibiotics disrupt the balance of bacteria in the gut, increasing susceptibility to infection.

Antibiotics are one option for treating the severe diarrhea, vomiting and abdominal discomfort that can follow infection.

However, roughly 40 percent of treated patients experience disease recurrence. What's more, antibiotics sweep out good bacteria along with the bad.

As an alternative, fecal transplantation essentially places an army of good bacteria into besieged territory, where it "smart-bombs" only the bad C. difficile bacteria that might otherwise elude antibiotics.

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