title: Factor analysis of plasma lipoprotein components.
abstract: Serum phospholipids were analyzed for their content of long-chained fatty acids together with other components of lipoproteins (total- and HDL-cholesterol, apolipoproteins A-I and B, triglycerides), in 60 coronary heart disease patients and 30 control individuals. Some of the individual variations in content of the various components showed co-variation with each other. This formed the basis for the extraction of 7 'factors' by the statistical procedure 'factor analysis'. Analysis of variance was performed with the 'factor scores' for subgroups of high and low age and high and low total serum cholesterol. The analysis revealed two unexpected factors which discriminated with statistical significance between young, hypercholesterolaemic patients and controls. One factor was a positive risk factor and the other a negative one. They could possibly be dependent on the existence of two at present uncharacterized subgroups of lipoproteins. These lipoproteins contained, according to the analysis, large amounts of certain fatty acids. It is suggested that fatty acid analysis might be useful in the characterization of lipoproteins that are involved in the development of atherosclerosis.
mesh_terms: D000368:Aged; D016632:Apolipoprotein A-I; D001054:Apolipoproteins A / Q000097:blood; D001055:Apolipoproteins B / Q000097:blood; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D003327:Coronary Disease / Q000097:blood*; D005163:Factor Analysis, Statistical; D005227:Fatty Acids / Q000097:blood; D005260:Female; D006801:Humans; D008074:Lipoproteins / Q000097:blood*; D008075:Lipoproteins, HDL / Q000097:blood; D008297:Male; D008875:Middle Aged; D010743:Phospholipids / Q000097:blood; D012307:Risk Factors; D014280:Triglycerides / Q000097:blood
chemical_list: D016632:Apolipoprotein A-I; D001054:Apolipoproteins A; D001055:Apolipoproteins B; D008076:Cholesterol, HDL; D005227:Fatty Acids; D008074:Lipoproteins; D008075:Lipoproteins, HDL; D010743:Phospholipids; D014280:Triglycerides; D002784:Cholesterol