The relationship between non-HDL cholesterol and coronary collateral circulation

Abstract

Objective Non high density lipoprotein cholesterol (non HDL-C) covers all aterojenic lipoproteins and correlates with C reactive protein (CRP) which is reliable marker of inflammation. CRP is related to poor angiographic coronary collateral circulation (CCC). We aimed to show whether non HDL-C is associated with CCC.Methods Patients who underwent coronary angiography for stable coronary artery disease and at least one epicardial coronary artery occluded in the proximal or middle region were included in the study. Accrording to the Rentrop scoring system Rentrop 0 and 1 were considered to be poor CCC, and Rentrop 2 and 3 were considered to be good CCC. Non-HDL-C was calculated by subtracting HDL-C from total cholesterol (TC).Results 84 patients were included in the study. While 44 patients (52%) had good CCC, 40 patients (48%) had poor CCC. TC was found to be higher in the poor CCC group than in the good CCC group (224.3 ± 35.6 vs 179.2 ± 25.5 p = 0.000). HDL-C levels were found to be lower in the poor CCC group than in the good CCC group (37.3 ± 9.8 vs 44.1 ± 8.6 p = 0.001). Non-HDL-C cholesterol levels were higher in the group with poor CCC (185.7 ± 39.2 vs 132.8 ± 28.1 p = 0.000). CRP levels were found to be higher in the poor CCC group (3.73 ± 2.5 vs 1.67 ± 1.4 p = 0,000).Conclusion Non-HDL-C is independent predictors of poor CCC.