Navigation Links
Study Explains How Cranberries Prevent Urinary Infections

Juice changes properties of bacteria to form barrier against illness

THURSDAY, July 31 (HealthDay News) -- Researchers at Worcester Polytechnic Institute say that have solved the mystery of how cranberry juice prevents urinary tract infections.

Their study, published in the current issue of Colloids and Surfaces: B, shows that the juice changes the thermodynamic properties of bacteria in the urinary tract to form an energy barrier that prevents infections from developing.

The research team found that when bacteria with hair-like projections known as fimbriae, which is present on virulent bacteria that cause urinary tract infections, is exposed to even low concentrations of cranberry juice that energy levels increased to levels that made it difficult for the bacteria attach to a cell.

When the bacteria and urinary tract cells were placed in a solution, fewer and fewer attachments were observed as the concentrations of cranberry juice were added to the mix.

Cranberry juice did not appear to affect bacteria without fimbriae, which suggests something in the juice may directly change the molecular structure of the fimbriae themselves.

"Our results show that, at least for urinary tract infections, cranberry juice targets the right bacteria -- those that cause disease -- but has no effect on non-pathogenic organisms, suggesting that cranberry juice will not disrupt bacteria that are part of the normal flora in the gut," Terri Camesano, an associate professor of chemical engineering at WPI, said in a university news release. "We have also shown that this effect occurs at concentrations of cranberry juice that are comparable to levels we would expect to find in the urinary tract."

Camesano said that unpublished work also shows cranberry juice has potent effects on disease-causing bacteria, but that the effect is temporary. "This suggests that to realize the antibacterial benefits of cranberry, one must consume cranberry juice regularly, perhaps daily," she said.

Other work her lab did shows that regular cranberry juice cocktail and sugar-free cranberry juice both work effectively to prevent urinary tract infections.

More information

The U.S. National Library of Medicine has more about urinary tract infections.

-- Kevin McKeever

SOURCE: Worcester Polytechnic Institute, news release, July 21, 2008

Copyright©2008 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. UNC study: Common vaginal infection may increase risk of HIV infection
2. Communication gap exists between seniors and surgeons, study finds
3. Liver damage in hepatitis C patients could be treated with warfarin, says study
4. On-X Life Technologies Significantly Reduces Study Management Costs with TEMPO from Clinipace
5. J.D. Power and Associates Study Ranks Kaiser Permanente Highest in Member Satisfaction in South Atlantic Region
6. Cocaine addiction linked to voluntary drug use and cellular memory, UCSF study shows
7. Study Finds Spice-Rich Marinades Can Reduce Harmful Compounds When Grilling
8. New study shows calcium significantly improves childrens bone health
9. Searching for shut eye: Penn study identifies possible sleep gene
10. Bariatric patients have 65% lower chance of complications at top hospitals: HealthGrades study
11. New study finds healthy children of Alzheimer patients show early brain changes
Post Your Comments:
(Date:6/27/2016)... , ... June 27, 2016 , ... recently awarded ... Eyeglasses . , Millions of individuals in the United States and Canada wear ... a way to both correct vision and make a fashion statement. Even celebrities use ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... PawPaws ... a new product that was developed to enhance the health of felines. The formula ... , The two main herbs in the PawPaws Cat Kidney Support Supplement ...
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs surgery services, can ... Surgery and to Dr. Russell Peckham for medical and surgical dermatology. , Dr. Dorsey ... cancer. The selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was under ...
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern Californian, Dr. Omkar ... M.D from the David Geffen School of Medicine at UCLA. He trained in Internal ... complete his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where he had ...
(Date:6/24/2016)... Los Angeles, CA (PRWEB) , ... June 24, 2016 , ... ... plastic surgery procedures that most people are unfamiliar with. The article goes on to ... known procedures, but also many of these less common operations such as calf and ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... , June 27, 2016  VMS Rehab Systems, ... Board will take whatever measures required to build a ... stock which is currently listed on the OTC Markets-pink ... Company Chairman and CEO, "We are seeing an anomaly ... to understand, not only by the Company, but shareholders ...
(Date:6/24/2016)... SAN FRANCISCO, Calif. , June 24, 2016 ... GBT ), a biopharmaceutical company developing novel therapeutics ... significant unmet needs, today announced the closing of ... shares of common stock, at the public offering ... shares in the offering were offered by GBT. ...
(Date:6/24/2016)... , June 24, 2016 The Academy ... of recommendations that would allow biopharmaceutical companies ... with entities that make formulary and coverage decisions, a ... "value" of new medicines. The recommendations address ... not appear on the drug label, a prohibition that ...
Breaking Medicine Technology: