title: Incorporation of cholesterol into serum high and low density lipoproteins.
abstract: Excess cholesterol (CHL) was incorporated into serum lipoproteins by incubation with Celite-dispersed CHL or CHL crystals. The initial rates of uptake were 15 and 7 mol CHL/ mol lipoprotein X h-1 for low (LDL) and high (HDL) density lipoprotein, respectively. Saturation values were obtained after 48 h and were 90 and 65 mol CHL/mol LDL, and 42 and 32 mol/mol HDL using CHL on Celite and CHL crystals, respectively. Characterization of the lipoproteins showed a small change in electrophoretic mobility and an increase in molecular masses, especially after incubation with CHL on Celite. Spectroscopic methods showed only minor effects on the protein moieties.
mesh_terms: D002784:Cholesterol / Q000097:blood*; D006801:Humans; D007700:Kinetics; D008075:Lipoproteins, HDL / Q000096:biosynthesis / Q000097:blood*; D008077:Lipoproteins, LDL / Q000096:biosynthesis / Q000097:blood*
chemical_list: D008075:Lipoproteins, HDL; D008077:Lipoproteins, LDL; D002784:Cholesterol