In all cases of myocardial infarction, median serum levels of APO-A1, ox-LDL and PLA2 were 120.36 mg/dl, 23.72 ng/ml and 4.1 ng/ml, respectively, whereas the mean serum Apo-B, anti-oxidized LDL antibody and PON-1 levels were 83.48 ± 27.98 mg/dl, 14.6 ± 1.8 ng/ml and 3.12 ± 1.07 ng/ml respectively. Here, PON1 is linked to myocardial infarction.