Airflow Limitation and Endothelial Dysfunction. Unrelated and Independent Predictors of Atherosclerosis

American Journal of Respiratory and Critical Care Medicine
Divay ChandraFrank C Sciurba

Abstract

Lower FEV1 is associated with increased prevalence of atherosclerosis; however, causal mechanisms remain elusive. To determine if systemic endothelial dysfunction mediates the association between reduced FEV1 and increased atherosclerosis. Brachial artery endothelial function, pulmonary function, coronary artery calcium, and carotid plaque were assessed in 231 Pittsburgh SCCOR (Specialized Centers for Clinically Oriented Research) study participants; peripheral arterial endothelial function, pulmonary function, and coronary artery calcium were assessed in 328 HeartSCORE (Heart Strategies Concentrating on Risk Evaluation) study participants. Lower FEV1 was independently associated with increased atherosclerosis in both cohorts (per 25% lower % predicted FEV1: odds ratio [OR], 1.76; 95% confidence interval [CI], 1.30-2.40; P < 0.001 for carotid plaque in SCCOR participants) (per 25% lower % predicted FEV1: OR, 1.35; 95% CI, 1.02-1.77; P = 0.03 for coronary artery calcium in HeartSCORE participants). Similarly, reduced endothelial function was independently associated with increased atherosclerosis in both cohorts (per SD lower endothelial function: OR, 1.30; 95% CI, 1.01-1.67; P = 0.04 for carotid plaque in SCCOR participants) (p...Continue Reading

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