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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/13952

Title: Circulating Apoptotic Endothelial Cells and Apoptotic Endothelial Microparticles Independently Predict the Presence of Cardiac Allograft Vasculopathy
Authors: Singh, Neha
Van Craeyveld, Eline
Tjwa, Marc
Ciarka, Agnieszka
Emmerechts, Jan
Droogne, Walter
Gordts, Stephanie C.
Carlier, Vincent
Jacobs, Frank
FIEUWS, Steffen
Vanhaecke, Johan
Van Cleemput, Johan
De Geest, Bart
Issue Date: 2012
Abstract: Objectives Maintenance of endothelial homeostasis may prevent the development of cardiac allograft vasculopathy (CAV). This study investigated whether biomarkers related to endothelial injury and endothelial repair discriminate between CAV-negative and CAV-positive heart transplant recipients. Background CAV is the most important determinant of cardiac allograft survival and a major cause of death after heart transplantation. Methods Fifty-two patients undergoing coronary angiography between 5 and 15 years after heart transplantation were recruited in this study. Flow cytometry was applied to quantify endothelial progenitor cells (EPCs), circulating endothelial cells (CECs), and endothelial microparticles. Cell culture was used for quantification of circulating EPC number and hematopoietic progenitor cell number and for analysis of EPC function. Results The EPC number and function did not differ between CAV-negative and CAV-positive patients. In univariable models, age, creatinine, steroid dose, granulocyte colony-forming units, apoptotic CECs, and apoptotic endothelial microparticles discriminated between CAV-positive and CAV-negative patients. The logistic regression model containing apoptotic CECs and apoptotic endothelial microparticles as independent predictors provided high discrimination between CAV-positive and CAV-negative patients (C-statistic 0.812; 95% confidence interval: 0.692 to 0.932). In a logistic regression model with age and creatinine as covariates, apoptotic CECs (p = 0.0112) and apoptotic endothelial microparticles (p = 0.0141) were independent predictors (C-statistic 0.855; 95% confidence interval: 0.756 to 0.953). These 2 biomarkers remained independent predictors when steroid dose was introduced in the model. Conclusions The high discriminative ability of apoptotic CECs and apoptotic endothelial microparticles is a solid foundation for the development of clinical prediction models of CAV. (J Am Coll Cardiol 2012;60:324-31) (C) 2012 by the American College of Cardiology Foundation
Notes: [Singh, Neha; Van Craeyveld, Eline; Tjwa, Marc; Emmerechts, Jan; Gordts, Stephanie C.; Carlier, Vincent; Jacobs, Frank; De Geest, Bart] Univ Leuven, Ctr Mol & Vasc Biol, B-3000 Louvain, Belgium. [Tjwa, Marc] Goethe Univ Frankfurt, Lab Vasc Hematol Angiogenesis, Inst Transfus Med, Frankfurt, Germany. [Ciarka, Agnieszka; Droogne, Walter; Vanhaecke, Johan; Van Cleemput, Johan] Univ Hosp Leuven, Div Cardiol, Louvain, Belgium. [Fieuws, Steffen] Univ Hasselt, Louvain, Belgium. [Fieuws, Steffen] Univ Leuven, Interuniv Inst Biostat & Stat Bioinformat, B-3000 Louvain, Belgium. bart.degeest@med.kuleuven.be
URI: http://hdl.handle.net/1942/13952
DOI: 10.1016/j.jacc.2012.02.065
ISI #: 000306486300009
ISSN: 0735-1097
Category: A1
Type: Journal Contribution
Validation: ecoom, 2013
Appears in Collections: Research publications

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