Paradoxical progression of atherosclerosis related to low-density lipoprotein reduction and exposure to ezetimibe

European Heart Journal
Allen J TaylorEric J Stanek

Abstract

Ezetimibe reduces low-density lipoprotein cholesterol (LDL-C) but has complex actions on cholesterol transport and metabolism, and thus, LDL-C reduction may not solely define its overall effects. We explored the relationship between treatment effects and cumulative exposure to ezetimibe, with its effects on carotid intima-media thickness (CIMT) in ARBITER 6-HALTS. This analysis includes the 159 patients randomized to ezetimibe within ARBITER 6-HALTS that completed the final imaging endpoint assessment. Eligibility criteria for ARBITER 6-HALTS included known coronary artery disease (CAD) or high risk for coronary heart disease, and treatment with a statin with LDL-C <100 mg/dL and high-density lipoprotein cholesterol <50 or 55 mg/dL for men and women, respectively. The mean CIMT was measured in the far wall of the distal common carotid artery. We analysed the univariate and multivariate relationships of the change in CIMT with baseline characteristics, on-treatment effects, and cumulative ezetimibe exposure (treatment duration × dose × adherence). Ezetimibe reduced LDL-C from 84 ± 23 to 66 ± 20 mg/dL. No net effect on CIMT was observed (baseline CIMT 0.898 ± 0.151 mm; net change -0.002 mm; P = 0.52). There was an inverse relatio...Continue Reading

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Citations

Aug 6, 2013·Current Atherosclerosis Reports·Catherine Martel, Gwendalyn J Randolph
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