Role of gap junction involved with endothelium-derived hyperpolarizing factor for the quercetin-induced vasodilatation in rat mesenteric artery

► Quercetin dilates the mesenteric artery via endothelium-dependent mechanisms. ► NO plays a minor role in quercetin-induced vasodilatation. ► Glycyrrhetinic acids attenuated quercetin-induced vasodilatation.