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Improvement of Endothelial Function With Dietary Flavanols Is Associated With Mobilization of Circulating Angiogenic Cells in Patients With Coronary Artery Disease

Heiss, Christian, Jahn, Sarah, Taylor, Melanie, Real, Wendy May, Angeli, Franca S., Wong, Maelene L., Amabile, Nicolas, Prasad, Megha, Rassaf, Tienush, Ottaviani, Javier I. , Mihardja, Shirley, Keen, Carl L., Springer, Matthew L., Boyle, Andrew, Grossman, William, Glantz, Stanton A., Schroeter, Hagen and Yeghiazarians, Yerem (2010) Improvement of Endothelial Function With Dietary Flavanols Is Associated With Mobilization of Circulating Angiogenic Cells in Patients With Coronary Artery Disease Journal of the American College of Cardiology, 56 (3). pp. 218-224.

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Abstract

Objectives In patients with coronary artery disease (CAD) medically managed according to currently accepted guidelines, we tested whether a 1-month dietary intervention with flavanol-containing cocoa leads to an improvement of endothelial dysfunction and whether this is associated with an enhanced number and function of circulating angiogenic cells (CACs).

Background Dietary flavanols can improve endothelial dysfunction. The CACs, also termed endothelial progenitor cells, are critical for vascular repair and maintenance of endothelial function.

Methods In a randomized, controlled, double-masked, cross-over trial, 16 CAD patients (64 ± 3 years of age) received a dietary high-flavanol intervention (HiFI [375 mg]) and a macronutrient- and micronutrient-matched low-flavanol intervention (LoFI [9 mg]) twice daily in random order over 30 days.

Results Endothelium-dependent vasomotor function, as measured by flow-mediated vasodilation of the brachial artery, improved by 47% in the HiFI period compared with the LoFI period. After HiFI, the number of CD34+/KDR+-CACs, as measured by flow cytometry, increased 2.2-fold as compared with after LoFI. The CAC functions, as measured by the capacity to survive, differentiate, proliferate, and to migrate were not different between the groups. The HiFI led to a decrease in systolic blood pressure (mean change over LoFI: −4.2 ± 2.7 mm Hg), and increase in plasma nitrite level (mean change over LoFI: 74 ± 32 nM). Applying a mixed-effects linear regression model, the results demonstrated a significant increase in flow-mediated vasodilation and a decrease in systolic blood pressure with increasing levels of CD34+/KDR+-CACs.

Conclusions Sustained improvements in endothelial dysfunction by regular dietary intake of flavanols are associated with mobilization of functional CACs. (Effect of Cocoa Flavanols on Vascular Function in Optimally Treated Coronary Artery Disease Patients: Interaction Between Endothelial Progenitor Cells, Reactivity of Micro- and Macrocirculation; NCT00553774).

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Biosciences and Medicine > Department of Clinical and Experimental Medicine
Faculty of Health and Medical Sciences > School of Biosciences and Medicine
Faculty of Health and Medical Sciences
Authors :
NameEmailORCID
Heiss, Christianc.heiss@surrey.ac.uk
Jahn, Sarah
Taylor, Melanie
Real, Wendy May
Angeli, Franca S.
Wong, Maelene L.
Amabile, Nicolas
Prasad, Megha
Rassaf, Tienush
Ottaviani, Javier I.
Mihardja, Shirley
Keen, Carl L.
Springer, Matthew L.
Boyle, Andrew
Grossman, William
Glantz, Stanton A.
Schroeter, Hagen
Yeghiazarians, Yerem
Date : 13 July 2010
Identification Number : 10.1016/j.jacc.2010.03.039
Copyright Disclaimer : © 2010 by the American College of Cardiology Foundation
Uncontrolled Keywords : Nutrition; Angiogenic cells; Flow-mediated vasodilation; Coronary artery disease; Flavanols.
Depositing User : Diane Maxfield
Date Deposited : 14 Aug 2018 13:59
Last Modified : 14 Aug 2018 13:59
URI: http://epubs.surrey.ac.uk/id/eprint/848930

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