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February 13, 2002

Is the Size of Low-Density Lipoprotein Particles Related to the Risk of Coronary Heart Disease?

Author Affiliations

Stephen J.LurieMD, PhD, Senior EditorIndividualAuthor

JAMA. 2002;287(6):712-713. doi:10.1001/jama.287.6.711

To the Editor: Dr Campos and colleagues reported that larger low-density lipoprotein (LDL) particle size is associated with increased risk for recurrent clinical events in patients with coronary heart disease (CHD).1 Their conclusion that larger, cholesterol-enriched LDL can be more atherogenic is consistent with evidence from animal models2 as well as with an earlier case-control study of normolipidemic patients with angiographically defined CHD.3 However, their data do not exclude an atherogenic role for small, dense LDL, which has been strongly related to the risk for developing CHD in several other large cohorts4 and for which multiple proatherogenic features have been demonstrated in vitro. For example, compared with midsized LDL, subspecies at both extremes of the LDL size and density distribution have been shown to have reduced LDL receptor affinity.5