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Journal of Lipids
Volume 2011 (2011), Article ID 549137, 6 pages
http://dx.doi.org/10.1155/2011/549137
Research Article

LDL-C/HDL-C Ratio Predicts Carotid Intima-Media Thickness Progression Better Than HDL-C or LDL-C Alone

1Division of Cardio-Vascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan
2Department of Community Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan

Received 24 February 2011; Revised 25 April 2011; Accepted 14 May 2011

Academic Editor: Angeliki Chroni

Copyright © 2011 Mika Enomoto et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

High-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) are strong predictors of atherosclerosis. Statin-induced changes in the ratio of LDL-C to HDL-C (LDL-C/HDL-C) predicted atherosclerosis progression better than LDL-C or HDL-C alone. However, the best predictor of subclinical atherosclerosis remains unknown. Our objective was to investigate this issue by measuring changes in carotid intima-media thickness (IMT). A total of 1,920 subjects received health examinations in 1999, and were followed up in 2007. Changes in IMT (follow-up IMT/baseline ) were measured by ultrasonography. Our results showed that changes in IMT after eight years were significantly related to HDL-C (inversely, ) and to LDL-C/HDL-C ratio ( ). When the LDL-C/HDL-C ratios were divided into quartiles, analysis of covariance showed that increases in the ratio were related to IMT progression ( ). This prospective study demonstrated the LDL-C/HDL-C ratio is a better predictor of IMT progression than HDL-C or LDL-C alone.