Lecithin:cholesterol acyltransferase (LCAT) and cholesteryl ester (CE) transfer activity accumulate linearly in the recirculated medium of the isolated perfused rabbit liver. The appearance of both activities in the perfusate was blocked by the addition of 10 microM colchicine, indicating that these two proteins are synthesized and secreted by the liver. CE transfer activity catalyzed the net t...

Incubation of cultured arterial smooth muscle cells with large concentrations of low density lipoproteins (LDL) resulted in a net increase in cell cholesterol and cholesteryl ester mass that was dependent on LDL concentration and time of incubation. Use of an inhibitor of acyl-CoA:cholesterol acyl-transferase (ACAT) reduced the accumulation of cholesteryl ester mass by 40% (range 25% to 50%), s...

The concentration dependence and tissue distribution of high density lipoprotein (HDL) cholesteryl ester and apolipoprotein (apo) transport were determined in apoA-I knockout mice (apoA-I-/-) that lack normal HDL in plasma. Rates of HDL cholesteryl ester clearance were highly sensitive to plasma HDL cholesteryl ester concentrations with clearance rates falling by 80% in the liver and by 95% in ...