The clinical role of combined serum C1q And hsCRP in predicting coronary artery disease.

Abstract Objective C1q has been shown to be associated with coronary heart disease (CAD) and can co-deposit with C-reactive protein (CRP) in atherosclerotic plaques. However, few studies have been conducted between C1q, CRP parameters and CAD. The aim of this study is to explore the relationship between C1q and CRP parameters and assess their clinical significance in CAD. Methods 238 total patients who underwent coronary artery angiography were enrolled and divided into control group (n=65), stable CAD group (n=47) and unstable angina group (UA group, n=126). Patients’ data were collected from self-administered questionnaires and electrical medical records. The severity of coronary stenosis was presented by Gensini score. The relationship between C1q, CRP parameters and CAD were evaluated by multivariate regression analysis and their predicting performance were assessed by ROC analysis and odds ratio analysis. Results Compared with control group, C1q was showed significantly lower in stable CAD (P=0.004) and UA groups (P=0.008), while hsCRP was higher in UA group (P=0.024). Serum C1q was weakly positively associated with hsCRP (r=0.24, P Conclusions Reduced serum C1q and increased hsCRP are independently associated with CAD and could be potential predictors for CAD diagnosis. Furthermore, combined C1q and hsCRP showed better performance in predicting CAD than using single one.