[Effects of statins on coronary atherosclerotic plaque in patients with coronary heart disease and type 2 diabetes with mild elevated LDL-C].
OBJECTIVE
To evaluate the effects of statins on coronary atherosclerotic plaque in patients with stable angina pectoris and type 2 diabetes with mild elevated low density lipoprotein-cholesterol (LDL-C).


METHODS
Seventy-eight patients with stable angina pectoris and type 2 diabetes mellitus and mild elevated LDL-C were treated with (n=40) or without (n=38) statins for 12 months. Coronary artery angiography (CAG) and intravascular ultrasound (IVUS) were performed at baseline and after 12 months on lesion and reference segment to compare the plaque volume, lumen volume, vascular volume and remodeling index was calculated as vascular volume index (VVI) at lesion divided by VVI at reference segment One coronary lesion with 50%-70% stenosis was selected as target plaque in each patient.


RESULTS
Baseline clinical and angiographic data were comparable between the two groups. After 12 months, LDL-C decreased 31.5% in statin group and remained unchanged in non-statin group. After 12 months, plaque volume was significantly increased [ (76.1 +/- 13.0) mm3 vs. (95.0 +/- 21.9) mm3 , P < 0.05], lumen volume was significantly decreased [(65.0 +/- 10.9) mm3 vs. (45.4 +/- 6.6) mm3, P < 0.05 ] and vascular volume remained unchanged in non-statins group; plaque volume was also significantly increased [(79.5 +/- 15.2) mm3 vs. (87.5 +/- 17.9) mm3 , P < 0.05] while lumen volume and vascular volume remained unchanged in statin group. Remodeling index (RI) remained unchanged in non-statin group but significantly increased in statin group (0.91 +/- 0.08 vs. 0.95 +/- 0.10, P < 0.05) after 12 months.


CONCLUSIONS
Chronic statin therapy could retard the coronary atherosclerotic progression in patients with stable angina pectoris and type 2 diabetes with mild elevated LDL-C.
Wang
Xiao-fei
XF
Department of Cardiology, Tianjin First Central Hospital, Clinical College of Tianjin Medical University, Tianjin 300192, China. wangxiaofei@medmail.com.cn
Lu
Cheng-zhi
CZ
Chen
Xin
X
D000368:Aged; D008078:Cholesterol, LDL / Q000097:blood; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000188:drug therapy*; D003924:Diabetes Mellitus, Type 2 / Q000097:blood / Q000188:drug therapy*; D005260:Female; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome; D014463:Ultrasonography
D008078:Cholesterol, LDL; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors