Both serum apolipoprotein B and the apolipoprotein B/apolipoprotein A-I ratio are associated with carotid intima-media thickness.
BACKGROUND
Previous studies indicated that apolipoprotein measurements predicted cardiovascular disease (CVD) risk; however, associations between apolipoproteins and carotid intima-media thickness (CIMT) were less explored.


RESULTS
The cross-sectional study included 6069 participants aged 40 years or older with NGT from Shanghai, China. Serum fasting traditional lipids (total cholesterol [TC], low-density lipoprotein cholesterol [LDL-C], high-density lipoprotein cholesterol [HDL-C] and triglycerides [TG]), apoA-I and apoB were assessed. A high-resolution B-mode ultrasonography was performed to measure CIMT. We found CIMT increased progressively across the quartiles of serum apoB (p for trend <0.0001). In logistic regression, concentrations of apoB (odds ratio [OR] 1.27, 95% confidence interval [CI] 1.18-1.36), TC (OR 1.23, 95% CI 1.14-1.32), LDL-C (OR 1.25, 95% CI 1.16-1.34) and TG (OR 1.11, 95% CI 1.04-1.20) were significantly related to elevated CIMT after adjusted for age and sex. Meanwhile, the apoB/apoA-I ratio (OR 1.25, 95% CI 1.17-1.34) related to elevated CIMT. ApoB (OR 1.23, 95% CI 1.00-1.51) and the apoB/apoA-I ratio (OR 1.19, 95% CI 1.04-1.36) remained significantly associated with elevated CIMT, after adjusted for the traditional CVD risk factors including traditional lipids.


CONCLUSIONS
There were significant associations between serum apoB, the apoB/apoA-I ratio and elevated CIMT. Serum apoB and the apoB/apoA-I ratio might be independent predictors of early atherosclerosis in NGT.
Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health, Rui-Jin Hospital, Shanghai Jiao Tong University School of Medicine, E-Institute of Shanghai Universities, Shanghai, China.
Fei
F
Huang
Zhi
Z
Yang
Baihui
B
Xu
Yufang
Y
Bi
Min
M
Xu
Yu
Y
Xu
Jieli
J
Lu
Yu
Y
Liu
Meng
M
Dai
Wenzhong
W
Zhou
Weiqing
W
Wang
Yuhong
Y
Chen
D000368:Aged; D016632:Apolipoprotein A-I / Q000097:blood*; D001055:Apolipoproteins B / Q000097:blood*; D002339:Carotid Arteries / Q000033:anatomy & histology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017539:Tunica Intima
D016632:Apolipoprotein A-I; D001055:Apolipoproteins B