GW24-e3099 Association between very low-density lipoprotein cholesterol level and 5-year progression of carotid plaque. (1st October 2013)

• Record Type: Journal Article
• Authors: Fan, Zhao; Qi, Yue; Liu, Jing; Liu, Jun; Wang, Wei; Xie, Wuxiang; Wang, Miao; Qin, Lanping; Sun, Jiayi; Zhao, Dong
• Is Part Of: Heart. Volume 99(2013)Supplement 3
• Page Start: A124
• Page End: A125
• Publication Date: 2013-10-01
• Subjects: Heart -- Diseases -- Treatment -- Periodicals; Cardiology -- Periodicals; 616.12
• DOI: 10.1136/heartjnl-2013-304613.339
• Languages: English
• ISSNs: 1355-6037

Abstract

Abstract : Objectives: To explore the association between baseline very low-density lipoprotein cholesterol level (VLDL-C) and 5-year progression of carotid plaque. Methods: Study subjects were recruited from two Chinese cohorts [the People's Republic of China - United States of America collaborative study (USA-PRC study) and the Chinese multi-provincial cohort study (CMCS)]. A total of 2030 subjects, aged 38 to 74 years, who had complete blood lipids information and B-mode ultrasound of carotid artery examination for both the baseline survey in 2002 and reexamination in 2007 were included in this analysis. Baseline VLDL-C was categorised into three groups according to ATP III criteria: optimal level (VLDL-C < 20 mg/dL), elevated level (VLDL-C = 20∼29 mg/dL) and high level (VLDL-C ≥30 mg/dL). The progression of carotid plaque was defined as the appearance of at least one plaque at reexamination in a previously plaque-free arterial segment. Results: The 5-year progression rate of carotid plaque was 48.5% in all 2030 subjects (men 52.9% vs. women 45.6%). The rates increased with the levels of VLDL-C (43.3%, 50.0%, and 53.9% for the optimal, elevated, and high level group, respectively, P < 0.001). In subjects with normal LDL-C level, the progression rates of carotid plaque also increased with VLDL-C level (38.8%, 41.6%, and 48.9% respectively for the optimal, elevated, and high level group, P = 0.015). In multivariate logistic analysis, the odds ratio for the progression of carotid plaque was 1.40 (95%CI = 1.13-1.74, P = 0.002) after adjusting for age and sex, and 1.29 (95%CI = 1.03-1.61, P = 0.025) after adjusting for other non-lipid risk factors (hypertension, diabetes, obesity and smoking) for high level of VLDL-C compared to low level group. However, the association between VLDL-C and progression of carotid plaque was attenuated and became nonsignificant after further adjustment for LDL-C and/or HDL-C (P > 0.05). Conclusions: The progression rate of carotid plaque was high in the middle-aged and elderly population, and higher rate was found for those with higher baseline VLDL-C, even in subjects with normal LDL-C level. Given the complex relationship among serum lipid components, the role of VLDL-C in the development of atherosclerosis needs further investigation.