RESUMEN
Objective To evaluate the correlation between serum homocysteine (Hcy) level,serum uric acid level and coronary lesion severity in patients with coronary artery disease (CAD).Methods A total of 622 patients receiving coronary angiography from January 2015 to December 2015 were retrospectively studied.They were divided into two groups according to the findings on coronary angiography.Those with ≥ 50％ stenosis were defined as coronary artery disease.According to SYNTAX score,CAD patients were divided into three groups:low risk group (1-22),moderate risk group (23-32) and high risk group (＞ 33).Fasting serum Hcy levels,fasting serum uric acid levels,fasting blood lipids including total cholesterol (TC),triglycerides (TG),high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) were determined.Then,patients were divided into two groups according to the serum Hcy level for observing the relationship between the serum Hcy and the SYNTAX score.Results TC,LDL-C were significant higher in SYNTAX score high-risk group and moderate risk group compared with normal group.There were no statistically significant differences in TC and LDL-C between the normal group and the low-risk group (P ＞ 0.05).Compared with normal coronary group,Hcy in high risk group and moderate risk group was significant higher.There were no statistically significant differences in age,sex,TC,TG,HDL-C,LDL-C between normal Hcy group and high Hcy group (P ＞ 0.05).The SYNTAX score was significantly higher in high Hcy group than that in normal group (P ＜ 0.05).Multivariate logistic regression analysis suggested that serum Hcy was associated with coronary lesion severity.Compared with normal coronary group in the same gender,uric acid level in high risk group and moderate risk group was significant higher (P ＜ 0.05).Multivariate logistic regression analysis showed that serum uric acid was associated with coronary lesion severity.(P ＜ 0.05) Conclusions Serum Hcy and high uric acid level are the risk factors of coronary lesion severity.With the increased Hcy level and uric acid level,the increase in the severity degree of coronary artery lesions represents a greater cardiovascular risk.