• Journal Article

Relation of cholesterol and lipoproteinparameters with carotid artery plaque characteristics: The Atherosclerosis Risk in Communities (ARIC) carotid MRI study

Citation

Virani, S. S., Catellier, D., Pompeii, L. A., Nambi, V., Hoogeveen, R. C., Wasserman, B. A., ... Ballantyne, C. M. (2011). Relation of cholesterol and lipoproteinparameters with carotid artery plaque characteristics: The Atherosclerosis Risk in Communities (ARIC) carotid MRI study. Atherosclerosis, 219(2), 596-602. DOI: 10.1016/j.atherosclerosis.2011.08.001

Abstract

Objective
There is a paucity of data regarding relations of apolipoproteins (apolipoprotein B [ApoB] and apolipoprotein A-1 [Apo A-1]), lipoprotein particle measures (low-density lipoprotein particle concentration [LDLp] and high-density lipoprotein particle concentration [HDLp]), and lipoproteincholesterol measures (low-density lipoproteincholesterol [LDL-C], non-high-density lipoproteincholesterol [non-HDL-C], and high-density lipoproteincholesterol [HDL-C]) with atherosclerotic plaque burden, plaque eccentricity, and lipid-rich core presence as a marker of high-risk plaques.

Methods
Carotidartery magnetic resonance imaging was performed in 1670 Atherosclerosis Risk in Communities study participants. Vessel wall and lipid cores were measured; normalized wall index (NWI), standard deviation (SD) of wall thickness (measure of plaque eccentricity) were calculated; and lipid cores were detected in vessels with ?1.5 mm thickness. Fasting concentrations of cholesterol, ApoB and Apo A-1, and LDLp and HDLp were measured.

Results
Measures of plaque burden (carotid wall volume, wall thickness, and NWI) were positively associated with atherogenic cholesterol and lipoproteins (p < 0.05 for total cholesterol, LDL-C, non-HDL-C, ApoB, and LDLp), but not with HDL-C, Apo A-1, or HDLp. SD of wall thickness was associated with total cholesterol (p 0.01) and non-HDL-C (p 0.02). Although measures of atherogenic or anti-atherogenic cholesterol or lipoprotein were not individually associated with detection of a lipid-rich core, their ratios (total cholesterol/HDL-C, non-HDL-C/HDL-C, and LDLp/HDLp) were associated with lipid-rich core presence (p ? 0.05).

Conclusion
Extent of carotid atherosclerosis is associated with atherogenic cholesterol and lipoproteins. Atherogenic/anti-atherogenic cholesterol or particle ratios were associated with presence of a detectable lipid-rich core.