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Chronic consumption of flavanol-rich cocoa improves endothelial function and decreases vascular cell adhesion molecule in hypercholesterolemic postmenopausal women.
J Cardiovasc Pharmacol. 2006; 47 Suppl 2:S177-86; discussion S206-9.JC

Abstract

Endothelial dysfunction characterizes many disease states including subclinical atherosclerosis. The consumption of flavanol-rich cocoa and cocoa-based products has been shown to improve endothelial function in both compromised and otherwise normal, healthy individuals when administered either acutely or over a period of several days, or weeks. Women experience increased risk for cardiovascular disease after menopause, which can be associated with endothelial dysfunction. Whether a flavanol-rich cocoa-based product can improve endothelial function in hypercholesterolemic postmenopausal women is not known. The purpose of the present study was to determine whether chronic dietary administration of flavanol-rich cocoa improves endothelial function and markers of cardiovascular health in hypercholesterolemic postmenopausal women. Thirty-two postmenopausal hypercholesterolemic women were randomly assigned to consume a high-flavanol cocoa beverage (high cocoa flavanols (CF)--446 mg of total flavanols), or a low-flavanol cocoa beverage (low CF--43 mg of total flavanols) for 6 weeks in a double-blind study (n=16 per group). Endothelial function was determined by brachial artery-reactive hyperemia. Plasma was analyzed for lipids (total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol), hormones (follicle-stimulating hormone), total nitrate/nitrite, activation of cellular adhesion markers (vascular cell adhesion molecule 1, intercellular adhesion molecule 1, E-Selectin, P-Selectin), and platelet function and reactivity. Changes in these plasma markers were then correlated to brachial reactivity. Brachial artery hyperemic blood flow increased significantly by 76% (P<0.05 vs. baseline) after the 6-week cocoa intervention in the high CF group, compared with 32% in the low CF cocoa group (P=ns vs. baseline). The 2.4-fold increase in hyperemic blood flow with high CF cocoa closely correlated (r2=0.8) with a significant decrease (11%) in plasma levels of soluble vascular cell adhesion molecule-1. Similar responses were not observed after chronic use of low CF. There were no significant differences between high and low CF in other biochemical markers and parameters measured. This study is the first to identify beneficial vascular effects of flavanol-rich cocoa consumption in hypercholesterolemic postmenopausal women. In addition, our results suggest that reductions in plasma soluble vascular cell adhesion molecule-1 after chronic consumption of a flavanol-rich cocoa may be mechanistically linked to improved vascular reactivity.

Authors+Show Affiliations

Department of Nutrition, University of California, Davis, CA 95616, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16794456

Citation

Wang-Polagruto, Janice F., et al. "Chronic Consumption of Flavanol-rich Cocoa Improves Endothelial Function and Decreases Vascular Cell Adhesion Molecule in Hypercholesterolemic Postmenopausal Women." Journal of Cardiovascular Pharmacology, vol. 47 Suppl 2, 2006, pp. S177-86; discussion S206-9.
Wang-Polagruto JF, Villablanca AC, Polagruto JA, et al. Chronic consumption of flavanol-rich cocoa improves endothelial function and decreases vascular cell adhesion molecule in hypercholesterolemic postmenopausal women. J Cardiovasc Pharmacol. 2006;47 Suppl 2:S177-86; discussion S206-9.
Wang-Polagruto, J. F., Villablanca, A. C., Polagruto, J. A., Lee, L., Holt, R. R., Schrader, H. R., Ensunsa, J. L., Steinberg, F. M., Schmitz, H. H., & Keen, C. L. (2006). Chronic consumption of flavanol-rich cocoa improves endothelial function and decreases vascular cell adhesion molecule in hypercholesterolemic postmenopausal women. Journal of Cardiovascular Pharmacology, 47 Suppl 2, S177-86; discussion S206-9.
Wang-Polagruto JF, et al. Chronic Consumption of Flavanol-rich Cocoa Improves Endothelial Function and Decreases Vascular Cell Adhesion Molecule in Hypercholesterolemic Postmenopausal Women. J Cardiovasc Pharmacol. 2006;47 Suppl 2:S177-86; discussion S206-9. PubMed PMID: 16794456.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chronic consumption of flavanol-rich cocoa improves endothelial function and decreases vascular cell adhesion molecule in hypercholesterolemic postmenopausal women. AU - Wang-Polagruto,Janice F, AU - Villablanca,Amparo C, AU - Polagruto,John A, AU - Lee,Luke, AU - Holt,Roberta R, AU - Schrader,Heather R, AU - Ensunsa,Jodi L, AU - Steinberg,Francene M, AU - Schmitz,Harold H, AU - Keen,Carl L, PY - 2006/6/24/pubmed PY - 2006/11/11/medline PY - 2006/6/24/entrez SP - S177-86; discussion S206-9 JF - Journal of cardiovascular pharmacology JO - J. Cardiovasc. Pharmacol. VL - 47 Suppl 2 N2 - Endothelial dysfunction characterizes many disease states including subclinical atherosclerosis. The consumption of flavanol-rich cocoa and cocoa-based products has been shown to improve endothelial function in both compromised and otherwise normal, healthy individuals when administered either acutely or over a period of several days, or weeks. Women experience increased risk for cardiovascular disease after menopause, which can be associated with endothelial dysfunction. Whether a flavanol-rich cocoa-based product can improve endothelial function in hypercholesterolemic postmenopausal women is not known. The purpose of the present study was to determine whether chronic dietary administration of flavanol-rich cocoa improves endothelial function and markers of cardiovascular health in hypercholesterolemic postmenopausal women. Thirty-two postmenopausal hypercholesterolemic women were randomly assigned to consume a high-flavanol cocoa beverage (high cocoa flavanols (CF)--446 mg of total flavanols), or a low-flavanol cocoa beverage (low CF--43 mg of total flavanols) for 6 weeks in a double-blind study (n=16 per group). Endothelial function was determined by brachial artery-reactive hyperemia. Plasma was analyzed for lipids (total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol), hormones (follicle-stimulating hormone), total nitrate/nitrite, activation of cellular adhesion markers (vascular cell adhesion molecule 1, intercellular adhesion molecule 1, E-Selectin, P-Selectin), and platelet function and reactivity. Changes in these plasma markers were then correlated to brachial reactivity. Brachial artery hyperemic blood flow increased significantly by 76% (P<0.05 vs. baseline) after the 6-week cocoa intervention in the high CF group, compared with 32% in the low CF cocoa group (P=ns vs. baseline). The 2.4-fold increase in hyperemic blood flow with high CF cocoa closely correlated (r2=0.8) with a significant decrease (11%) in plasma levels of soluble vascular cell adhesion molecule-1. Similar responses were not observed after chronic use of low CF. There were no significant differences between high and low CF in other biochemical markers and parameters measured. This study is the first to identify beneficial vascular effects of flavanol-rich cocoa consumption in hypercholesterolemic postmenopausal women. In addition, our results suggest that reductions in plasma soluble vascular cell adhesion molecule-1 after chronic consumption of a flavanol-rich cocoa may be mechanistically linked to improved vascular reactivity. SN - 0160-2446 UR - https://www.unboundmedicine.com/medline/citation/16794456/Chronic_consumption_of_flavanol_rich_cocoa_improves_endothelial_function_and_decreases_vascular_cell_adhesion_molecule_in_hypercholesterolemic_postmenopausal_women_ L2 - http://dx.doi.org/10.1097/00005344-200606001-00013 DB - PRIME DP - Unbound Medicine ER -