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Cranberry Juice Shows Promise Blocking Staph Infections

Posted Sep 01 2010 7:30pm

Expanding their scope of study on the mechanisms of bacterial infection, researchers at Worcester Polytechnic Institute (WPI) have reported the surprise finding from a small clinical study that cranberry juice cocktail blocked a strain of Staphylococcus aureus (S. aureus) from beginning the process of infection.

The data was reported in a poster presentation at the American Chemical Society’s national meeting in Boston on August 23, 2010, by Terri Camesano, professor of chemical engineering at WPI. “Most of our work with cranberry juice has been with E. coli and urinary tract infections, but we included Staphylococcus aureus in this study because it is a very serious health threat,” Camesano said. “This is early data, but the results are surprising.”

The virulent form of E. coli that Camesano studies is the primary cause of most urinary tract infections. Strains of S. aureus can cause a range of “staph infections” from minor skin rashes to serious bloodstream infections. One particular strain, known as Methicillin-resistant Staphylococcus aureus, or MRSA, is a growing public health problem in hospitals, nursing homes, and other institutions because it doesn’t respond to most antibiotics.

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