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Biotransformed blueberry juice fights fat and diabetes

02.09.2009
New study published in the International Journal of Obesity

Juice extracted from North American lowbush blueberries, biotransformed with bacteria from the skin of the fruit, holds great promise as an anti-obesity and anti-diabetic agent.

The study, published in the International Journal of Obesity, was conducted by researchers from the Université de Montréal, the Institut Armand-Frappier and the Université de Moncton who tested the effects of biotransformed juices compared to regular blueberry drinks on mice.

"Results of this study clearly show that biotransformed blueberry juice has strong anti-obesity and anti-diabetic potential," says senior author Pierre S. Haddad, a pharmacology professor at the Université de Montréal's Faculty of Medicine. "Biotransformed blueberry juice may represent a novel therapeutic agent, since it decreases hyperglycemia in diabetic mice and can protect young pre-diabetic mice from developing obesity and diabetes."

The scientists tested the effect of biotransformed blueberry juice on a group of mice prone to obesity, insulin resistance, diabetes and hypertension. Incorporating biotransformed blueberry juice into the water of mice reduced their food intake and their body weight. "These mice were an excellent model that closely resembles obesity and obesity-linked type 2 diabetes in humans," says Dr. Haddad, who is also director of the CIHR Team in Aboriginal Anti-Diabetic Medicines at the Université de Montréal.

Biotransformation of the blueberry juice was achieved with a new strain of bacteria isolated from the blueberry flora, specifically called Serratia vaccinii, which increases the fruit's antioxidant effects. "The identification of the active compounds in biotransformed blueberry juice may result in the discovery of promising new antiobesity and antidiabetic molecules," says Dr. Haddad.

As for the impact of blueberry products on diabetes, says Tri Vuong, lead author and recent PhD graduate from the Université de Montréal's Department of Pharmacology: "Consumption of fermented blueberry juice gradually and significantly reduced high blood glucose levels in diabetic mice. After three days, our mice subjects reduced their glycemia levels by 35 percent."

About the Study:

The article "Antiobesity and antidiabetic effects of biotransformed blueberry juice in KKAy mice," published in the International Journal of Obesity, was authored by Tri Vuong, Ali Benhaddou-Andaloussi, Antoine Breault , Despina Harbilas, Louis C. Martineau, Pierre S. Haddad of the Université de Montréal and Diane Vallerand, C. Ramassamy of the Institut Armand-Frappier, C. Matar of the Université de Moncton.

Partners in Research:

This study was funded by the Canadian Institutes of Health Research, the Atlantic Canada Opportunities Agency and the Fonds de recherche sur la nature et les technologies.

On the Web:

About cited article from the International Journal of Obesity: http://www.nature.com/ijo/journal/vaop/ncurrent/full/ijo2009149a.html

About the Université de Montréal's Department of Pharmacology: http://www.pharmco.umontreal.ca

About Pierre S. Haddad: www.pharmco.umontreal.ca/apropos/LaboHaddad/LabHaddad.htm

About the INRS-Institut Armand-Frappier: www.iaf.inrs.ca

About the Université de Moncton: www.umoncton.ca

For more information, please contact:
Sylvain-Jacques Desjardins
International press attaché
Université de Montréal
Telephone: 514-343-7593
Email: sylvain-jacques.desjardins@umontreal.ca

Sylvain-Jacques Desjardins | EurekAlert!
Further information:
http://www.umontreal.ca

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