Résumé
Objective To investigate the significance of combined detection of serum lipoprotein-associated phospholipase A2 (Lp-PLA2) and small dense low-density lipoprotein cholesterol (sdLDL-C) in the clinical diagnosis of coronary heart disease.Methods 100 patients with coronary heart disease were selected as the ex-periment group ,and 50 healthy subjects who underwent the health assessment were selected as the control group.The levels of serum Lp-PLA2 ,sdLDL-C ,homocysteine (Hcy) ,triglyceride (TG) ,total cholesterol (TC) ,high density lipoprotein cholesterol (HDL-C) ,low density lipoprotein cholesterol (LDL-C) ,and the de-gree of coronary heart disease (CHD) were measured and the correlation was analyzed.Results Compared with the control group ,the level of Lp-PLA2 ,sdLDL-C and Hcy increased significantly ,and the level of HDL-C was lower ,and the difference was statistically significant (P＜0.05) ;there was a positive correlation between Lp-PLA2 and sdLDL-C ,Hcy ,TG ,TC and LDL-C (r=0.430 ,0.633 ,0.259 ,0.450 ,0.269 ,P=0.026 , 0.013 ,0.028 ,0.032 ,0.023).There was a negative correlation between Lp-PLA2 and HDL-C (r= -0.632 , P=0.01).In 0- ＜20 points ,20- ＜40 points and ≥40 points experiment groups ,the levels of Lp-PLA2 and sdLDL-C were significantly higher than those in the control group ,and the differences were significant (P＜0.05) ;there was also a significant difference in the level of Lp-PLA2 and sdLDL-C between 0- ＜20 points ,20- ＜40 points and ≥40 points experiment groups (P＜0.05).The positive rates of the combined detection of Lp-PLA2 and sdLDL-C in the acute coronary syndrome (ACS) group and the stable angina (SAP) group were significantly higher than those of the single test ,and the differences were statistically significant (χ2=4.246 , 4.974 ,P=0.039 ,0.026).Conclusion Lp-PLA2 and sdLDL-C levels are both higher in patients with coronary heart disease than those in healthy people.The combined detection of Lp-PLA2 and sdLDL-C has a certain clinical significance for assessing the development and prognosis of patients with coronary heart disease.