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Association of cholesterol concentrations in low-density lipoprotein, high-density lipoprotein, and high-density lipoprotein subfractions, and of apolipoproteins AI and AII, with coronary stenosis and left ventricular function

Association of cholesterol concentrations in low-density lipoprotein, high-density lipoprotein, and high-density lipoprotein subfractions, and of apolipoproteins AI and AII, with coronary stenosis and left ventricular function

Journal of Laboratory and Clinical Medicine 109(1): 19-26

We examined the association of cholesterol levels in serum lipoprotein fractions, as well as of serum apolipoprotein-AI (apo-AI) adn apo-AII levels, with coronary artery stenosis (CAS) and left ventricle function in a group of 43 patients with angina pectoris (33 men and 10 women) subjected to angiography. Cholesterol level in VLDL, LDL, HDL2, and HDL3 fractions was determined after separation of these fractions by density gradient ultracentrifugationl. HDL-cholesterol is the sum of cholesterol in HDL2 and HDL3. Cineangiography yielded scores for CAS and for left ventricle ejection fraction (LVEF). On univariate regression CAS was correlated weakly with LDL-cholesterol (positive) and with HDL3-cholesterol and HDL-cholesterol (negative), and more strongly with LDL-cholesterol/HDL-cholesterol (positive), but not with HDL2-cholesterol. LVEF was correlated positively with HDL3-cholesterol, HDL-cholesterol, apo-AI, and apo-AII. Of other "risk factors", none was correlated with CAS, and a history of previous myocardial infarction (PMI) was the only one significantly correlated with LVEF. CAS itself was also correlated negatively with LVEF. In multiple regression analysis with two or three independent variables, the relation of HDL(3)-cholesterol with CAS remained significant when other risk factors were taken into account. LVEF remained related positively with HDL(3)-cholesterol, apo-AI, or apo-AII, when either of them was tested in combination with other risk factors; of these only PMI made a significant independent contribution. Conclusions for this patient group (with low HDL-cholesterol): (1) HDL3-cholesterol, and not HDL2-cholesterol, is informative for CAS; (2) HDL(3)-cholesterol, apo-AI, or apo-AII, as well as CAS and PMI, are associated with LVEF; the relations of the HDL parameters with LVEF are independent of CAS or PMI.

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Accession: 004790273

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PMID: 3098880

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