Vinul rosu, spre deosebire de alte bauturi alcoolice, ar putea contribui la prevenirea infarctului prin intermediul unui mecanism celular bine specificat. Compusii polifenolici din vinul rosu de tip Cabernet Sauvignon impiedica producerea endotelinei – 1, o peptida care contracta vasele sanguine, fiind astfel un factor recunoscut in dezvoltarea bolilor coronariene. Acelasi test, realizat pe vinuri albe sau roze, a aratat ca acestea nu au aceasta calitate. Pentru ca vinul roze testat era de aceeasi origine (Cabernet Sauvignon), cercetatorii au ajuns la concluzia ca substantele din vinul rosu care impiedica sinteza peptidei ET-1 sunt continute in pielita strugurilor in momentul procesului vinificarii.
Polifenolii din vinul rosu sunt, de altfel, atat de puternici incat chiar si consumul foarte moderat de vin rosu este suficient pentru manifestarea eficientei mecanismului celular.
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