Apolipoprotein A-I-containing lipoproteins and atherosclerosis.

Apolipoprotein A-I-containing lipoproteins represent a heterogeneous group of lipoparticles. Recent studies suggest that a specific subpopulation within the lipoprotein (AI) subclass may be more effective than other lipoproteins in promoting cholesterol efflux from cells and in the different steps of reverse cholesterol transport. This review describes the different apolipoprotein A-I-containing HDL subfractions, their role in reverse cholesterol transport, and their metabolic interconversions and relationship with lipoprotein-modifying enzymes.