Endothelial progenitor cells correlate with endothelial function in patients with coronary artery disease
- 199 Downloads
Endothelial progenitor cells (EPC) predict morbidity and mortality in patients at cardiovascular risk.Patients with low EPC counts and impaired endothelial colony forming activity have a higher incidence for cardiovascular events compared to patients with high EPC counts and favorable colony forming activity. The pathophysiological basis for this finding may be an insufficient endothelial cell repair by EPC.We postulate that EPC influence coronary endothelial function which itself is relevant for the outcome of patients at cardiovascular risk. To test this hypothesis in humans, endothelial function was invasively assessed in 90 patients with coronary heart disease by quantitative coronary angiography during intracoronary acetylcholine infusion. Flow cytometry of mononuclear cells isolated from peripheral blood was performed to assess CD133+ or CD34+/KDR+ EPC. EPC function was assessed ex vivo by determination of endothelial colony forming units. Low EPC number as well as impaired endothelial colony forming activity correlated with severely impaired coronary endothelial function in univariate analysis. Multivariate analysis revealed that only the number of EPC predicts severe endothelial dysfunction independent of classical cardiovascular risk factors. Endothelial function closely correlates with the number of circulating EPC providing new mechanistic insights and options for risk assessment in patients with coronary heart disease.
Key wordsendothelial progenitor cells endothelial function atherosclerosis
- 2.Assmus B, Schachinger V, Teupe C, Britten M, Lehmann R, Dobert N, Grunwald F, Aicher A, Urbich C, Martin H, Hoelzer D, Dimmeler S, Zeiher AM (2002) Transplantation of Progenitor Cells and Regeneration Enhancement in Acute Myocardial Infarction (TOPCAREAMI). Circulation 106:3009–3017CrossRefPubMedGoogle Scholar
- 4.Fontaine V, Filipe C, Werner N, Gourdy P, Billon A, Garmy-Susini B, Brouchet L, Bayard F, Prats H, Doetschman T, Nickenig G, Arnal JF (2006) Essential role of bone marrow fibroblast growth factor- 2 in the effect of estradiol on reendothelialization and endothelial progenitor cell mobilization. Am J Pathol 169:1855–1862CrossRefPubMedGoogle Scholar
- 18.Schachinger V, Erbs S, Elsasser A, Haberbosch W, Hambrecht R, Holschermann H, Yu J, Corti R, Mathey DG, Hamm CW, Suselbeck T, Assmus B, Tonn T, Dimmeler S, Zeiher AM (2006) Intracoronary bone marrow-derived progenitor cells in acute myocardial infarction. N Engl J Med 355:1210–1221CrossRefPubMedGoogle Scholar
- 24.Walter DH, Rittig K, Bahlmann FH, Kirchmair R, Silver M, Murayama T, Nishimura H, Losordo DW, Asahara T, Isner JM (2002) Statin therapy accelerates reendothelialization: a novel effect involving mobilization and incorporation of bone marrow-derived endothelial progenitor cells. Circulation 105:3017–3024CrossRefPubMedGoogle Scholar