RESUMO
Objective:To explore serum level of high sensitive C reactive protein(hsCRP)and expression of CX3C chemokine receptor 1(CX3CR1)on peripheral blood mononuclear cells(PBMC)in patients with coronary heart disease(CHD)and its clinical significance.Methods:A total of 153 CHD patients treated in our hospital from Mar 2016 to Mar 2017 were selected,including 50 cases with stable angina pectoris(SAP),52 cases with unstable angina pectoris(UAP)and 51 cases with acute myocardial infarction(AMI);according to coronary lesion degree assessed by Gensini score,153 CHD patients were divided into mild coronary disease group(n=43),moderate coronary dis-ease group(n=56)and severe coronary disease group(n=54).Another 45 healthy subjects were selected as healthy control group during the same period.Serum hsCRP level and CX3CR1 expression on PBMC were measured and compared among all groups,the correlation among serum hsCRP level,CX3CR1 expression and Gensini score were analyzed.Results:Compared with healthy control group,there were significant rise in serum hsCRP level[(2.36 ± 1.67)mg/L vs.(5.07 ± 2.16)mg/L vs.(13.59 ± 5.23)mg/L vs.(27.46 ± 8.24)mg/L]and CX3CR1 expression on PBMC[(0.48 ± 0.25)% vs.(11.13 ± 5.42)% vs.(20.56 ± 9.73)% vs.(37.49 ± 12.82)%]in SAP group,UAP group and AMI group,and AMI group> UAP group> SAP group,there was significant difference between any two groups,P=0.001 all.Compared with mild coronary disease group,there were significant rise in serum hsCRP level[(6.31 ± 1.83)mg/L vs.(17.42 ± 6.58)mg/L vs.(35.26 ± 9.74)mg/L]and CX3CR1 expression on PBMC [(6.59 ± 1.43)% vs.(25.86 ± 9.37)% vs.(42.57 ± 13.28)%]in moderate and severe coronary disease group,and those of severe coronary disease group were significantly higher than those of moderate coronary disease group,P=0.001 all.Linear correlation analysis indicated that serum hsCRP level and CX 3CR1 expression on PBMC were sig-nificantly correlated with Gensini score(r=0.768,0.897,P=0.001 both).Conclusion:Serum hsCRP level and CX3CR1 expression significantly rise in CHD patients along with the aggregation of coronary disease,which are ex-pected to be reference indexes predicting severity of CHD.