Medical College of Wisconsin
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Metabolic syndrome, insulin resistance, and brachial artery vasodilator function in Framingham Offspring participants without clinical evidence of cardiovascular disease. Am J Cardiol 2008 Jan 01;101(1):82-8

Date

12/26/2007

Pubmed ID

18157970

Pubmed Central ID

PMC2214853

DOI

10.1016/j.amjcard.2007.07.053

Scopus ID

2-s2.0-37349031781   80 Citations

Abstract

The metabolic syndrome (MS), a clustering of metabolic disturbances, is associated with increased cardiovascular risk. Limited information is available about the relations between MS, insulin resistance, and vascular function. We measured brachial artery flow-mediated dilation (n = 2,123) and reactive hyperemia (n = 1,521) in Framingham Offspring participants without diabetes or clinical cardiovascular disease (mean age 59 +/- 9 years, 57% women). MS, determined by National Cholesterol Education Program criteria, was present in 36% of participants. Insulin resistance was determined using Homeostatic Model Assessment. In age- and gender-adjusted models, MS was associated with lower flow-mediated dilation and reactive hyperemia. There was progressively lower vasodilator function with increasing number of MS components (p for trend <0.0001). In multivariable models adjusting for the 5 MS components as continuous variables, MS (presence vs absence) remained associated with lower flow-mediated dilation (2.84 +/- 0.12% vs 3.17 +/- 0.08%, p = 0.0496) and reactive hyperemia (50.8 +/- 1.0 vs 54.4 +/- 0.7 cm/s, p = 0.009). Insulin resistance was inversely associated with flow-mediated dilation and reactive hyperemia in age- and gender-adjusted models, but these relations were not significant in models adjusting for the MS components. In conclusion, our observations are consistent with the hypothesis that MS and insulin resistance impair vascular function predominantly through the influence of the component metabolic abnormalities that comprise MS.

Author List

Hamburg NM, Larson MG, Vita JA, Vasan RS, Keyes MJ, Widlansky ME, Fox CS, Mitchell GF, Levy D, Meigs JB, Benjamin EJ

Author

Michael E. Widlansky MD Associate Director, Professor in the Medicine department at Medical College of Wisconsin




MESH terms used to index this publication - Major topics in bold

Blood Flow Velocity
Brachial Artery
Female
Humans
Hyperemia
Insulin Resistance
Male
Metabolic Syndrome
Middle Aged
Models, Cardiovascular
Multivariate Analysis
Vasodilation
jenkins-FCD Prod-484 8aa07fc50b7f6d102f3dda2f4c7056ff84294d1d