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Circulating Progenitor Cells and Coronary Collaterals in Chronic Total Occlusion

Abstract

Background: The role of circulating progenitor cells (CPC) in collateral formation that occurs in the presence of chronic total occlusions (CTO) of a coronary artery is not well established. In stable patients with a CTO, we investigated whether CPC levels are associated with (a) collateral development and (b) ischemic burden, as measured by circulating high sensitivity troponin-I (hsTn-I) levels.

Methods: CPCs were enumerated by flow cytometry as CD45 blood mononuclear cells expressing CD34 and both CD34 and CD133 epitopes. The association between CPC counts and both Rentrop collateral grade (0, 1, 2, or 3) and hsTn-I levels were evaluated using multivariate regression analysis, after adjusting for demographic and clinical characteristics.

Results: In 89 patients (age 65.5, 72% male, 27% Black), a higher CPC count was positively associated with a higher Rentrop collateral grade; [CD34+ adjusted odds ratio (OR) 1.49 95% confidence interval (CI) (0.95, 2.34) P = 0.082] and [CD34+/CD133+ OR 1.57 95% CI (1.05, 2.36) P = 0.028]. Every doubling of CPC counts was also associated with lower hsTn-I levels [CD34+ β -0.35 95% CI (-0.49, -0.15) P = 0.002] and [CD34+/CD133+ β -0.27 95% CI (-0.43, -0.08) P = 0.009] after adjustment.

Conclusion: Individuals with higher CPC counts have greater collateral development and lower ischemic burden in the presence of a CTO.

References
1.
Fefer P, Knudtson M, Cheema A, Galbraith P, Osherov A, Yalonetsky S . Current perspectives on coronary chronic total occlusions: the Canadian Multicenter Chronic Total Occlusions Registry. J Am Coll Cardiol. 2012; 59(11):991-7. DOI: 10.1016/j.jacc.2011.12.007. View

2.
Vicencio J, Yellon D, Sivaraman V, Das D, Boi-Doku C, Arjun S . Plasma exosomes protect the myocardium from ischemia-reperfusion injury. J Am Coll Cardiol. 2015; 65(15):1525-36. DOI: 10.1016/j.jacc.2015.02.026. View

3.
Sahoo S, Mathiyalagan P, Hajjar R . Pericardial Fluid Exosomes: A New Material to Treat Cardiovascular Disease. Mol Ther. 2017; 25(3):568-569. PMC: 5363198. DOI: 10.1016/j.ymthe.2017.02.002. View

4.
Musialek P, Tekieli L, Kostkiewicz M, Majka M, Szot W, Walter Z . Randomized transcoronary delivery of CD34(+) cells with perfusion versus stop-flow method in patients with recent myocardial infarction: Early cardiac retention of ⁹⁹(m)Tc-labeled cells activity. J Nucl Cardiol. 2010; 18(1):104-16. PMC: 3032199. DOI: 10.1007/s12350-010-9326-z. View

5.
Asahara T, Masuda H, Takahashi T, Kalka C, Pastore C, Silver M . Bone marrow origin of endothelial progenitor cells responsible for postnatal vasculogenesis in physiological and pathological neovascularization. Circ Res. 1999; 85(3):221-8. DOI: 10.1161/01.res.85.3.221. View