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Red wine compound could help seniors walk away from mobility problems
Date:8/19/2012

us studies have shown that resveratrol an antioxidant found in red wine and dark-skinned fruits might help reduce inflammation, lower cholesterol, slash the risk of heart disease and certain cancers and, perhaps, have some anti-aging effects in the body. Resveratrol is available as a dietary supplement and is abundant in foods such as red grapes, blueberries and nuts.

To determine its effects on balance and mobility, Cavanaugh, Erika N. Allen and colleagues fed young and old laboratory mice a diet containing resveratrol for eight weeks. They periodically tested the rodents' ability to navigate a steel mesh balance beam, counting the number of times that each mouse took a misstep. Initially, the older mice had more difficulty maneuvering on the obstacle. But by week four, the older mice made far fewer missteps and were on par with the young mice.

While it is unclear how resveratrol works in the body, Cavanagh's team found some clues. In laboratory experiments, they exposed neural cells to a neurotransmitter called dopamine, which in large amounts can induce cell death. However, neurons treated with resveratrol before being exposed to dopamine survived. On closer examination, the researchers found that resveratrol mitigated the damage done by oxygen free radicals, generated by the breakdown of the dopamine, and activated protein signaling pathways that appeared to promote cell survival.

Although she is encouraged by the results, Cavanaugh notes that resveratrol does have some drawbacks. For instance, it is poorly absorbed by the body. In fact, she calculates that a 150-pound person would have to drink almost 700 4-ounce glasses of red wine a day to absorb enough resveratrol to get any beneficial effects. That's why she and her colleagues are investigating similar man-made compounds that mimic the effects of resveratrol and might be more bioavailable to the body. They're also trying to determine how much resveratrol actually enters t
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Contact: Michael Bernstein
m_bernstein@acs.org
215-418-2056 (Philadelphia Press Center, Aug. 17-23)
202-872-6042

Michael Woods
m_woods@acs.org
215-418-2056 (Philadelphia Press Center, Aug. 17-23)
202-872-6293
American Chemical Society


Source:Eurekalert

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