AGT and atherosclerosis: A few studies have showed that the renin-angiotensin system (RAS) participates in the pathogenesis of atherosclerosis (AS) process, angiotensin II(AngII) which is the main active factor in renin-angiotensin system improves the absorption of oxidized low density lipoprotein through a combination with the cell membrane of AngIIreceptor, affects fibrinolysis function of vascular endothelium and inflammation, and thereby accelerates the occurrence and development of AS (4, 5).