Small dense low-density lipoprotein cholesterol is a useful marker of metabolic syndrome in patients with coronary artery disease.
OBJECTIVE
An evaluation of the relation between small dense low-density lipoprotein cholesterol (sd-LDL-C) levels measured by the heparin-magnesium precipitation method and metabolic syndrome (MetS).


METHODS
We have prospectively measured sd-LDL-C levels by the heparin-magnesium precipitation method in 112 Japanese patients (male/female=80/32) with coronary artery disease (CAD) who received percutaneous coronary intervention (PCI). Patients were diagnosed with MetS according to modified Japanese criteria.


RESULTS
A total of 36 patients (32%) met the criteria for MetS. Sd-LDL-C levels were significantly higher in the MetS group than non-MetS group (20.7 +/- 1.5 mg/dL vs. 17.1 +/- 1.0 mg/dL, p=0.042), especially among patients without lipid-lowering therapy (26.4 +/- 2.6 mg/dL vs. 17.5 +/- 1.5 mg/dL, p= 0.0034). Sd-LDL-C levels gradually increased with the number of components used to define MetS (0; 14.5 +/- 1.8 mg/dL, 1; 16.5 +/- 1.8 mg/dL, 2; 16.7 +/- 1.3 mg/dL, 3; 19.3 +/- 1.7 mg/dL, 4; 23.1 +/- 2.1 mg/dL, 5; 40.0 mg/dL, p=0.0071). High-sensitivity C-reactive protein (hs-CRP) levels were significantly higher in the patients with MetS (1.09 +/- 0.17 mg/L vs. 0.67 +/- 0.09 mg/L, p=0.0204).


CONCLUSIONS
The sd-LDL-C level measured by the heparin-magnesium precipitation method is a useful marker of MetS in Japanese patients with CAD.
Nozue
Tsuyoshi
T
Division of Cardiology, Department of Internal Medicine, Yokohama Sakae Kyosai Hospital, Federation of National Public Service Personnel Mutual Associations, Japan. nozue2493@yahoo.co.jp
Michishita
Ichiro
I
Ishibashi
Yuki
Y
Ito
Shimpei
S
Iwaki
Taku
T
Mizuguchi
Ichiro
I
Miura
Motohiro
M
Ito
Yasuki
Y
Hirano
Tsutomu
T
D000368:Aged; D015415:Biomarkers / Q000097:blood*; D002097:C-Reactive Protein / Q000378:metabolism; D011232:Chemical Precipitation; D002624:Chemistry, Clinical / Q000379:methods; D003324:Coronary Artery Disease / Q000097:blood* / Q000150:complications / Q000175:diagnosis; D005260:Female; D006493:Heparin; D006801:Humans; D008077:Lipoproteins, LDL / Q000032:analysis / Q000097:blood*; D008274:Magnesium; D008297:Male; D024821:Metabolic Syndrome / Q000097:blood* / Q000150:complications / Q000175:diagnosis; D011446:Prospective Studies
D015415:Biomarkers; D008077:Lipoproteins, LDL; D006493:Heparin; D002097:C-Reactive Protein; D008274:Magnesium