Navigation Links
Study Explains How Cranberries Prevent Urinary Infections
Date:7/31/2008

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Camesano said that unpublished work also shows cranberry juice has potent effects on disease-causing bacteria, but that the effect is temporary.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:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... October 13, 2017 , ... Ellevate Network, the leading network for professional ... action towards gender equality at their inaugural Summit in New York City in June. ... a social audience of over 3 million. To watch the Mobilize Women video, ...
(Date:10/13/2017)... VA (PRWEB) , ... October 13, 2017 , ... ... of DevOps and Agile Software Development, has been awarded a contract by the ... Blanket Purchase Agreement (BPA) aims to accelerate the enterprise use of Agile methodologies ...
(Date:10/12/2017)... Francisco, CA (PRWEB) , ... October 12, 2017 ... ... Dr. Cheng, are now treating sleep apnea using cutting-edge Oventus O2Vent ... apnea, a serious sleep disorder characterized by frequent cessation in breathing. Oral appliances ...
(Date:10/12/2017)... ... 12, 2017 , ... The American College of Medical Informatics (ACMI) will present ... the Opening Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s Annual Symposium ... Collen, a pioneer in the field of medical informatics, this prestigious award is presented ...
(Date:10/12/2017)... ... 12, 2017 , ... HMP , a leader in healthcare events and ... Eddie Digital Award for ‘Best B-to-B Healthcare Website.’ Winners were announced during the Eddie ... annual award competition recognizes editorial and design excellence across a range of sectors. This ...
Breaking Medicine News(10 mins):
(Date:9/27/2017)... Israel and NEW YORK , Sept. 27, ... with mobile health and big data solutions, today announced that its MyDario ... Please check your local TV listings for when The Dr. Oz Show ... ... season this month. ...
(Date:9/23/2017)... , Sept. 22, 2017 Janssen Biotech, ... complete response letter from the U.S. Food and Drug ... approval of sirukumab for the treatment of moderately to ... indicates additional clinical data are needed to further evaluate ... to severely active RA. ...
(Date:9/19/2017)... medical device company developing a non-invasive, robotically assisted, platform therapy that uses pulsed sound energy ... ... Jim Bertolina, PhD ... Tom Tefft ... executive Josh Stopek , PhD, who has led R&D and business development teams at ...
Breaking Medicine Technology: