Significance of changes of serum ICAM-1 and LDH activity in different severity of vascular lesions of coronary heart disease

Objective:To analyze the relationship between serum ICAM-1,lactate dehydrogenase(LDH)and coronary heart disease(CHD)by clinical detection of serum ICAM-1 and LDH Objective to investigate the relationship between the severity of different types of coronary artery stenosis(CHD)and its role in the progression of CHD.Methods:180 patients with chest pain and coronary angiography were selected,including 145 patients with CHD diagnosed by coronary angiography and 35 patients without abnormal coronary angiography(control group).The 145 patients with CHD were further divided into mild partial stenosis group(a-chd,stenosis development≤49%),moderate partial stenosis group(b-chd,stenosis development 50%~74%)and severe partial stenosis group(c-chd,stenosis development≥75%).The levels of ICAM-1 and LDH in serum of patients were detected by ELISA,and the differences of ICAM-1 and LDH activities in different degrees of coronary artery disease and control group were statistically analyzed.Results:in the control group,HDL was higher than that in the c-chd group(P<0.05),neutrophils in the control group was lower than that in the c-chd group(P<0.05);ICAM-1,LDH and Gensini scores in the a-chd group,b-chd group and c-chd group were higher than those in the control group(P<0.05-P<0.01),and gradually increased with the aggravation of different coronary artery stenosis processes(P<0.05-P<0.01).The levels of serum ICAM-1 and LDH increased significantly with the increase of the number of CHD lesions(P<0.01).The levels of ICAM-1 and LDH were positively correlated with Gensini score(LDH r=0.409,P<0.01 and ICAM-1 r=0.463,P<0.01).The levels of ICAM-1 and neutrophils were positively correlated(r=0.208,P<0.01).The levels of LDH and ICAM-1 were negatively correlated with HDL(LDH r=-0.184,P<0.05 and ICAM-1)There was a negative correlation between LDH and total protein(r=-0.218,P<0.01),and a positive correlation between ICAM-1 and LDH(r=0.441,P<0.01).Conclusion:the levels of serum ICAM-1 and LDH gradually increase with the aggravation of different coronary artery stenosis,and there is a certain linear relationship between them.