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<dc:title xml:lang="fr">Effet protecteur des anthocyanes sur la fonction endothéliale vasculaire en condition physiologique et physiopathologique : caractérisation des mécanismes impliqués et rôle des sucres conjugués aux anthocyanes</dc:title>
<dcterms:alternative xml:lang="en">Protective effect of anthocyanins on vascular endothelial function in physiological and physiopathological conditions : characterization of the mechanisms involved and role sugars conjugated with anthocyanins</dcterms:alternative>
<dc:subject xml:lang="fr">Cyanidine-3-O-glucoside</dc:subject>
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<dc:subject xml:lang="fr">Monoxyde d’azote</dc:subject>
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<tef:elementdEntree autoriteExterne="061730882" autoriteSource="Sudoc">Cellules endothéliales</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Les produits riches en anthocyanes sont de puissants stimulateurs de la formation endothéliale de monoxyde d’azote (NO). L'objectif de l'étude était d'investiguer les mécanismes d’accumulation intracellulaire des cyanidines via les transporteurs de glucose conduisant à la formation de NO et à la protection vasculaire. Nos résultats indiquent que le cyanidine-3-Oglucoside provoque une formation soutenue de NO par l’activation rédox-sensible de la NO synthase endothéliale (eNOS) laquelle persiste pendant plusieurs heures et permet de prévenir l’adhésion des plaquettes et les cellules THP-1 aux cellules endothéliales. L'activation de la eNOS nécessite l'accumulation intracellulaire de cyanidines conjuguées via le cotransporteur sodium-glucose 1 et dépend fortement de la nature du sucre. Dans l'ensemble, les résultats suggèrent que les cyanidines conjuguées à un sucre actif améliorent et/ou préservent la fonction endothéliale protectrice et, par conséquent, la santé cardiovasculaire.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Anthocyanin-rich products are powerful stimulators of endothelial nitric oxide (NO) formation. The objective of this study was to investigate the mechanisms of intracellular cyanidin accumulation via glucose transporters, leading to NO production and vascular protection. Our findings indicate that cyanidin-3-O-glucoside induces sustained NO formation through redox-sensitive activation of endothelial NO synthase (eNOS). This effect persists for several hours and prevents the adhesion of platelets and THP-1 cells to endothelial cells. eNOS activation requires intracellular accumulation of conjugated cyanidins via the sodium-glucose co-transporter 1 and is strongly influenced by the type of sugar. Overall, the results suggest that cyanidins conjugated with an active sugar enhance and/or preserve the protective endothelial function,thereby promoting cardiovascular health.</dcterms:abstract>
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