ABSTRACT
【Objective】 To explore the distribution of ApoE polymorphism in Shaanxi province and its correlation with lipid level and coronary heart disease type. 【Methods】 ApoE genotypes in the whole blood of 11 533 patients with cardiovascular diseases admitted to The First Affiliated Hospital of Xi’an Jiaotong University from January 2019 to December 2019 were detected by PCR-fluorescent probe method. Then 3 884 patients with coronary heart disease were selected to detect the lipid level and classified for the analysis of ApoE polymorphism. 【Results】 The proportion of E2/E2, E2/E3, E3/E3, E2/E4, E4/E4 and E3/E4 was 0.69%, 11.66%, 70.31%, 1.17%, 0.83% and 15.34%, respectively. E3 genotype was the highest (71.48%), followed by E4 (16.17%), and E2 was the least (12.35%). There was no statistical difference in the distribution of ApoE polymorphism in patients with cardiovascular disease accompanied with or without coronary heart disease. Compared with those of E2, the total cholesterol (TC) and low-density lipoprotein (LDL-C) levels of E3 and E4 increased significantly (P0.008 3). 【Conclusion】 The polymorphism of ApoE in Shaanxi is mainly E3 type, and there is no statistical difference in the distribution of coronary heart disease and other cardiovascular diseases. ApoE gene polymorphism is correlated with blood lipid level and coronary heart disease, but the relationship with different types of coronary heart disease needs to be further determined.