Back to Search Start Over

Circulating Endothelial Progenitor Cells in Patients with ANCA-Associated Vasculitis.

Authors :
Závada, Jakub
Kideryová, Linda
Pytlík, Robert
Vaňková, Zdenka
Tesař, Vladimír
Source :
Kidney & Blood Pressure Research; 2008, Vol. 31 Issue 4, p247-254, 8p, 1 Chart, 4 Graphs
Publication Year :
2008

Abstract

Background/Aims: Bone marrow-derived endothelial progenitor cells (EPCs) are believed to contribute to endothelial repair after vascular damage. To investigate the potential for microvascular repair in patients with ANCA-associated vasculitis (AAV), we conducted a cross-sectional study determining the number of circulating EPCs in patients with AAV, chronic uremia, atherosclerosis, and in healthy volunteers. Methods: The number of circulating EPCs was determined by colony-forming assay in 41 patients with AAV, 15 hemodialysis patients (without vasculitis), 13 patients with peripheral arterial occlusive disease (PAOD), and 25 healthy controls. Results: Patients with AAV had a significantly lower number of CFU-Hill than healthy subjects (median 0.3 vs. 19.5 CFU-Hill/ml blood, p < 0.0001), but not than patients on hemodialysis or with PAOD. Neither institution of treatment nor entering remission increased the number of EPCs in AAV patients. The number of EPCs did not correlate with markers of disease activity. AAV patients with glomerular filtration rate <15 ml/min had an even lower number of circulating EPCs than patients with better preserved renal function (median 0.05 vs. 1.2 CFU-Hill/ml, p = 0.015) and patients with anti-MPO positivity had a trend towards a higher number of EPCs than patients with anti-PR3 antibodies (median 3.1 vs. 0.18 CFU-Hill/ml, p = 0.06). Conclusion: Patients with AAV have a significant and persistent deficiency of circulating EPCs. A low number of EPCs could reflect an impaired mechanism of vascular repair and may contribute to repeated relapses in these patients. Copyright © 2008 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14204096
Volume :
31
Issue :
4
Database :
Complementary Index
Journal :
Kidney & Blood Pressure Research
Publication Type :
Academic Journal
Accession number :
34217344
Full Text :
https://doi.org/10.1159/000142690