Correlation between LDL-C/HDL-C Ratio and the Severity of Coronary Artery Lesion in Patients with Coronary Heart Disease / 中山大学学报(医学科学版)

ABSTRACT

[Objective]To explore the correlations between different indices of lipoprotein cholesterol and apolipopro-tein of coronary heart disease(CHD)patients,especially that between low density lipoprotein cholesterol(LDL-C)and high density lipoprotein cholesterol(HDL-C)and that between apolipoprotein A1(apoA1)and apolipoprotein B100 (apoB100),as well as the correlations between these indices,indices ratios and the severity of coronary artery lesion.[Methods]301 coronary heart disease patients hospitalized to accept percutaneous coronary intervention(PCI)in the Third Affiliated Hospital of Sun Yat-sen University during 2013-2014 were recruited in the study. Fasting serum lipid indices including triglycerides(TG),total cholesterol(TC),LDL-C,HDL-C,apoA1 and apoB100 were examined before surgery.Gensini score was calculated to evaluate the severity of coronary artery lesion. 153 patients whose Gensini score was less than 50 were assigned to Group A,while 148 patients with Gensini score greater than or equal 50 were distributed to Group B.[Results]Positive correlations were found between LDL-C and HDL-C(r=0.161,P=0.005), apoA1 and apoB100(r=0.358,P<0.001),apoB100 and LDL-C(r=0.487,P<0.001),apoA1 and LDL-C(r=0.178, P=0.002)by linear correlation analysis. No significant correlation was found between apoB100 and HDL-C. None of LDL-C,HDL-C,TC was correlated with Gensini score. However,LDL-C/HDL-C ratio was positively correlated with Gensini score(r=0.148,P=0.01). The results showed no significant correlations between apoB100,apoB100/apo A1 ratio and Gensini score but negative correlation between apoA1 and Gensini score(r=-0.129,P=0.025). The positive correlation between HDL-C/LDL-C ratio and Gensini score was still valid after multi-factors adjustment (β=5.071,P=0.018).[Conclusion]Of patients with coronary heart disease,there exist some correlations between LDL-C and HDL-C,apoA1 and apoB100,while the correlation between LDL-C and HDL-C is relatively weak.The LDL-C/HDL-C ratio,weakly positively correlated with the severity of coronary artery lesion,is a risk factor of coronary artery lesion,while the level of apoA1,negatively correlated with the severity of coronary artery lesion,could play a protective role.