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Gen Physiol Biophys ; 31(1): 47-55, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-22447830

RESUMEN

Quercetin and epigallocatechin gallate are two of the most abundant polyphenols in dietary plants, including apples, onions, red wine and green tea. The bioactivity of polyphenols is linked to their ability to interact with cell membranes without being internalized. The aim of the present study was to assess the short-time effect of these polyphenols on membrane anisotropy and transmembrane potential of U937 monocytes and Jurkat T lymphoblasts. Results showed that quercetin and epigallocatechin gallate induced, after 20 minutes cell exposure, a dose-dependent increase of membrane anisotropy and polarization. Anisotropy increase was correlated with the reduction of lipid peroxidation. Our results could indicate that the antioxidant capacity of the tested polyphenols is due to their stabilizing effect on the cell membranes, thus contributing to cell protection in various pathologies and as adjuvant therapy in highly toxic treatment regimens.


Asunto(s)
Catequina/análogos & derivados , Membrana Celular/fisiología , Fluidez de la Membrana/fisiología , Potenciales de la Membrana/fisiología , Quercetina/farmacología , Antioxidantes/farmacología , Catequina/farmacología , Membrana Celular/efectos de los fármacos , Humanos , Células Jurkat , Fluidez de la Membrana/efectos de los fármacos , Potenciales de la Membrana/efectos de los fármacos , Estadística como Asunto , Células U937
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