Titre du document / Document title

Mechanism-based inactivation of COX-1 by red wine m-hydroquinones: A structure-activity relationship study

Auteur(s) / Author(s)

SZEWCZUK Lawrence M. ⁽¹⁾ ; PENNING Trevor M. ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Biochemistry & Biophysics and Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, ETATS-UNIS

Résumé / Abstract

Resveratrol (1) is a m-hydroquinone found in red wine, which has antiinflammatory, cardiovascular protective (antiplatelet), and cancer chemopreventive properties. It is a potent peroxidase-dependent mechanism-based inactivator of COX-1, a desired target for antiplatelet agents, and has no similar effect on COX-2. Much attention has focused on resveratrol (1) as being the sole agent responsible for the cardioprotective effects associated with red wine consumption (commonly known as the French paradox). In this study we show that other red wine constituents, namely, the catechins (2, 3) and epicatechins (4, 5), act as peroxidase mediated mechanism-based inactivators of COX-1 but not of COX-2. Structure-activity relationships identify these agents as being as effective as resveratrol with respect to their ability to specifically inactivate COX-1. We show that resorcinol (6) is the minimum structure necessary for mechanism-based inactivation of COX-1. These findings imply that resveratrol is not the sole agent responsible for the antiplatelet activity of red wine and suggest that all dietary m-hydroquinones should be examined for cardioprotective effects.

Revue / Journal Title

Journal of natural products   ISSN 0163-3864   CODEN JNPRDF 

Source / Source

2004, vol. 67, n^o11, pp. 1777-1782 [6 page(s) (article)] (27 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Chemical Society, Washington, DC, ETATS-UNIS  (1979) (Revue)

Mots-clés anglais / English Keywords

Peroxidases ; Enzyme ; Oxidoreductases ; Cardioprotective agent ; Anticoagulant ; Peroxidase ; Cyclooxygenase 1 inhibitor ; Cyclooxygenase 1 ; Enzyme inhibitor ; Antiplatelet agent ; Food ; Red wine ; Diphenols ; Stilbene derivatives ; Resorcinol ; Epimer ; Enantiomer ; Catechin ; Flavonoid ; Polyphenol ; Resveratrol ; Structure activity relation ; Mechanism of action ;

Mots-clés français / French Keywords

Peroxidases ; Enzyme ; Oxidoreductases ; Epicatéchine ; Cardioprotecteur ; Anticoagulant ; Peroxidase ; Inhibiteur cyclooxygenase 1 ; Cyclooxygenase 1 ; Inhibiteur enzyme ; Inhibiteur thromboagrégation ; Aliment ; Vin rouge ; Diphénols ; Stilbène dérivé ; Résorcinol ; Epimère ; Enantiomère ; Catéchine ; Flavonoïde ; Polyphénol ; Resvératrol ; Relation structure activité ; Mécanisme action ;

Mots-clés espagnols / Spanish Keywords

Peroxidases ; Enzima ; Oxidoreductases ; Cardioprotector ; Anticoagulante ; Peroxidase ; Inhibidor cyclooxygenase 1 ; Cyclooxygenase 1 ; Inhibidor enzima ; Inhibidor tromboagregación ; Alimento ; Vino tinto ; Difenoles ; Estilbeno derivado ; Resorcina ; Epímero ; Enantiómero ; Catequina ; Flavonoide ; Polifenol ; Resveratrol ; Relación estructura actividad ; Mecanismo acción ;

Localisation / Location

INIST-CNRS, Cote INIST : 4127, 35400012127750.0010