title: Fruit juice-induced endothelium-dependent relaxations in isolated porcine coronary arteries: evaluation of different fruit juices and purees and optimization of a red fruit juice blend.
abstract: Numerous studies have indicated that several polyphenol-rich sources such as red wine and green tea are potent inducers of endothelium-dependent relaxations in isolated arteries. As various fruits and berries are known to contain high levels of polyphenols, the aim of the present study was to assess the ability of selected pure fruit juices and purees as well as blends to cause endothelium-dependent relaxations in isolated arteries. Vascular reactivity was assessed using porcine coronary artery rings, and fruit juices, purees and blends were characterized for their content in vitamin C, total phenolic, sugar and antioxidant activity. Fruit juices and purees caused variable concentration-dependent relaxations, with blackcurrant, aronia, cranberry, blueberry, lingonberry, and grape being the most effective fruits. Several blends of red fruits caused endothelium-dependent relaxations. Relaxations to blend D involved both a NO- and an EDHF-mediated components. The present findings indicate that some berries and blends of red fruit juices are potent inducers of endothelium-dependent relaxations in the porcine coronary artery. This effect involves both endothelium-derived NO and EDHF, and appears to be dependent on their polyphenolic composition rather than on the polyphenolic content.
authors.affiliation: UMR CNRS 7213, Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, 74, route du Rhin, 67401 Illkirch, France.
authors.forename: Cyril
authors.initials: C
authors.lastname: Auger
authors.forename: Jong-Hun
authors.initials: JH
authors.lastname: Kim
authors.forename: Sandrine
authors.initials: S
authors.lastname: Trinh
authors.forename: Thierry
authors.initials: T
authors.lastname: Chataigneau
authors.forename: Anne M
authors.initials: AM
authors.lastname: Popken
authors.forename: Valérie B
authors.initials: VB
authors.lastname: Schini-Kerth
mesh_terms: D000818:Animals; D001205:Ascorbic Acid / Q000494:pharmacology; D001628:Beverages; D001685:Biological Factors / Q000378:metabolism; D003331:Coronary Vessels / Q000187:drug effects*; D005638:Fruit; D059808:Polyphenols / Q000494:pharmacology; D013552:Swine; D013662:Tea / Q000737:chemistry*; D014920:Wine
chemical_list: D001685:Biological Factors; D059808:Polyphenols; D013662:Tea; C067410:endothelium-dependent hyperpolarization factor; D001205:Ascorbic Acid