A new study suggests that cranberry juice, a well documented remedy to help prevent urinary tract infections, may also work against gastrointestinal viruses.
Study co-author Patrice Cohen, a undergraduate researcher at St. Francis College in Brooklyn, says that so far, the results have been achieved only in the laboratory, and more study is needed to see if those results are creditable.
Cohen says if further tests in the field do prove successful it could in theory make a big difference, as hundreds of thousands of children die from gastroenteritis each year throughout the world.
Cohen and her team worked with cell cultures and focused in the laboratory on an intestinal monkey rotavirus which causes diarrhea, called SA-11 and a pool of goat intestinal reoviruses which cause inflammation of the small intestine. They exposed both of the cultures to cranberry juice.
They found that cranberry juice prevented the SA-11 virus from attaching to red blood cells or infecting host cells, and when they looked at the SA-11 cell cultures under high-magnification microscopes, there were no viral particles in those treated with juice, and says Cohen, the effect was immediate.
She says they also tried to determine if there was a dose response, and found that a dose of 1:16, cranberry juice to virus, was effective.
In order to determine if the effect had something to do with the pH of cranberry juice, they looked at two samples, one of virus was exposed to cranberry juice, and the other virus was exposed to an equivalent amount of liquid with the same pH as cranberry juice.