Objective To investigate the changes in mRNA,protein levels and activity of acyl-coenzyme A:cholesterol acyltransferase-1 (ACAT1) of foam cells (FCs) derived from vascular smooth muscle cells (VSMCs).Methods Mouce VSMCs were cultured with oxidized low density lipoprotein (ox-LDL) of 100 g/mL for 72 hours to generate FCs.The mRNA,protein levels and activity of ACAT1 were determined by semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR),Western-blot and marked radioisotopes respectively...