Effect of rosuvastatin or its combination with omega-3 fatty acids on circulating CD34+ progenitor cells and on endothelial colony formation in patients with mixed dyslipidaemia
2016
Abstract Background and aims Hypercholesterolaemia is associated with a reduced number of circulating progenitor cells, a defect that is restored by statin therapy. We studied the effect of rosuvastatin monotherapy or its combination with omega-3 polyunsaturated fatty acids (ω-3 PUFAs) on progenitor cell number and function in patients with mixed dyslipidaemia. Methods Fifty patients with mixed dyslipidaemia and fifty-five normolipidaemic, apparently healthy, age- and sex-matched volunteers participated in the study. Patients were randomized to receive a daily dose of either 40 mg rosuvastatin (R group, n = 26) or 10 mg rosuvastatin plus 2 g of ω-3 PUFAs (R + O group, n = 24). The number of circulating CD34 + and CD34 + /KDR + progenitor cells as well as the number of colony-forming units-endothelial cells (CFU-ECs) at 10 days of culture were assessed at baseline and 3 months post-treatment. Results The number of CD34 + and CD34 + /KDR + cells per 10,000 leukocytes as well as the number of CFU-ECs were significantly lower in both patient groups compared with healthy volunteers (all p = 0.03). A 3-month treatment with either R or R + O significantly increased circulating CD34 + and CD34 + /KDR + cells as well as the number of CFU-ECs compared with baseline (all p = 0.03). Importantly, the increase in the above parameters was inversely correlated with therapy-induced reduction in lipid parameters in both patient groups. Conclusions Patients with mixed dyslipidaemia exhibit low numbers of circulating CD34 + and CD34 + /KDR + cells as well as CFU-ECs in culture, a defect restored by 3-month treatment with either high-rosuvastatin dose or a combination of low-rosuvastatin dose with ω-3 PUFAs. The pathophysiological meaning of our results regarding the increased cardiovascular risk in these patients remains to be established.
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