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Certain form of tomatoes could be key to prostate cancer prevention
Date:5/29/2008

COLUMBIA, Mo. New cancer research from the University of Missouri suggests that eating a certain form of tomato product could be the key to unlocking the prostate cancer-fighting potential of the tomato. The positive effect of tomato products has been suggested in many studies, but, until now, researchers did not know exactly what caused this effect.

It appears that the greatest protective effect from tomatoes comes from rehydrating tomato powder into tomato paste, said Valeri Mossine, research assistant professor of biochemistry in the College of Agriculture, Food and Natural Resources. Processing of many edible plants through heating, grinding, mixing or drying dramatically increases their nutritional value and cancer-fighting potential.

Mossine and his colleagues found that FruHis an organic carbohydrate present in dehydrated tomato products exerts a strong protective effect against prostate cancer. Rats, injected with prostate cancer-causing chemicals, were divided into groups and fed different diets. The group fed a diet of tomato paste plus additional FruHis demonstrated the longest survival rate. Only 10 percent in that group had developed prostate tumors. Sixty percent in the control group had tumors; 30 percent of the group fed tomato powder had tumors; and 25 percent of the group fed tomato paste alone had prostate tumors.

Before this study, researchers attributed the protective effect of tomatoes to ascorbic acid, carotenoids or phenolic compounds. FruHis may represent a novel type of potential dietary antioxidant, Mossine said. Our ongoing research now focuses on unraveling the mechanisms behind why this has a beneficial effect. This knowledge may lead to other avenues of research and drug development for prostate and other cancers. Results of this study certainly warrant clinical trials.


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Contact: Jennifer Faddis
faddisj@missouri.edu
573-882-6217
University of Missouri-Columbia
Source:Eurekalert

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