Objective: Serum uric acid (UA) is considered as a marker of natural progression of chronic heart failure (CHF). Progression of CHF associates with declining of circulating mononuclear progenitor cells (MPCs) in the blood. The objective of this study was to evaluate the interrelationship between SUA concentrations and proangiogenic MPCs in ischemic CHF patients.
Methods: The study was structured retrospectively after determining the coronary artery disease (CAD) by contrast-enhanced spiral computed tomography angiography in 126 subjects (54 male), aged 48 to 62 years, with CHF. Serum UA level was measured by enzymatic method and N-terminal proBNP (NT-pro-BNP) level was examined by immunoelectrochemiluminesence method. All biomarkers were measured at baseline.
Results: Concentrations of SUA were distributed by quartiles (Me; IQR): QI=20.11 (19.06; 22.33) mmol/l; QII=27.53 (23.2; 31.10) mmol/l; QIII=35.80 (32.0; 39.0) mmol/l; and QIV=44.9 (40.00; 49.60) mmol/l. Cox proportional adjusted Odds Ratios analyses for CD14+CD309+ and CD14+CD309+Tie2+ MPCs by SUA Quartiles (Q) has showed that high Q (Q3 and Q4) of SUA versus low Q (Q1 and Q2) associated with increased risk of depletion of both CD14+CD309+ and CD14+CD309+Tie2+ MPCs. The ROC analysis has been showed that there was the cut-off point for the SUA level with the best prognostic potential on the risk of decreasing MPCs in both models equal 31.5 mmol/l.
Conclusion: Circulated level of proangiogenic MPCs is declined progressively depended on quartiles of serum UA level in CHF subjects. We suggest that mild elevation of serum UA might be considered as a predictor of low proangiogenic MPCs in CHF patients.