Serum ox-LDL level is reduced with the extent of stenosis in coronary arteries

Oxidized LDL (ox-LDL) lipoproteins are proposed as important modified particles triggering proinflammatory events through receptor-mediated pathways. We evaluated the circulating ox-LDL level on the concept that the chronic immune events may affect ox-LDL clearance as the vessel stenosis develops in coronary arteries. One hundred sixty five subjects underwent coronary angiography and then, subdivided into four subgroups controls (n=85); SVD, 2VD and 3VD (n=80). The serum ox-LDL level and other biochemical parameters were measured using ELISA method and routine laboratory techniques, respectively. The serum ox-LDL level in the control group (4.81±1.41 mU/mg) was significantly higher than patients (4.28±1.73 mU/mg, P<0.05). The ox-LDL/LDL ratio was conversely reduced with the extent of stenosis as compared with the controls (P