sábado, 25 de febrero de 2012

Más evidencias del American Journal of Enology and Viticulture, 2011

Antioxidant Effects

The antioxidant effects associated with moderate wine drinking may be one of the factors responsible for the French Paradox. A high fat diet is known to cause high levels of oxidative damage to plasma lipoproteins, which is counteracted by antioxidants present in wine. Oxidative stress is also associated with chronic diseases, including atherosclerosis, heart failure, cancer, and neurological degeneration, and is believed to accelerate the aging process. Red wine has been shown to protect against each of these conditions by increasing plasma antioxidant capacity, suppressing reactive oxygen species generation, increasing serum oxygen radical absorbance capacity, and decreasing oxidative DNA damage. The oxidation of LDL cholesterol is strongly associated with cardiovascular disease. It has been demonstrated that wine flavonoids protect against LDL oxidation (Aviram and Fuhrman 2002,Ursini and Sevanian 2002). Wine procyanidins have been shown to be especially active in preventing lipid oxidation of foods while in the digestive tract, indicating that red wine consumption with a meal affords the most protection (Ursini and Sevanian 2002).

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