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Updated: May 29, 2026

Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Endostatin and vascular endothelial growth factor: potential regulators of endothelial progenitor cell number in
Ewa Wątorek1, Maria Paprocka, Danuta Duś
1Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wrocław, Poland. ewatorek@wp.pl
Insights
Patients with chronic kidney disease (CKD) have fewer circulating endothelial progenitor cells (EPCs), potentially impairing vascular repair and increasing cardiovascular risk. Elevated endostatin levels in CKD patients warrant further study.
Area of Science:
- Nephrology
- Cardiology
- Vascular Biology
Background:
- Chronic kidney disease (CKD) is linked to increased cardiovascular mortality.
- Circulating endothelial progenitor cells (EPCs) are crucial for vascular repair.
- Reduced EPCs may contribute to heightened cardiovascular risk in CKD patients.
Purpose of the Study:
- To quantify circulating EPCs in CKD patients.
- To investigate the relationship between EPCs and factors like VEGF and endostatin.
- To explore the impact of renal impairment severity on EPC levels.
Main Methods:
- Study included 139 patients with varying CKD severity (predialysis, hemodialysis, peritoneal dialysis).
- Plasma levels of vascular endothelial growth factor (VEGF) and endostatin were measured using ELISA.
- Circulating EPCs (CD34+VEGFR2+) were quantified via flow cytometry.
Main Results:
- A positive correlation was found between VEGF, EPCs (CD34+VEGFR2+), and glomerular filtration rate.
- Endostatin levels progressively increased with renal impairment, highest in hemodialysis and peritoneal dialysis groups.
- EPC counts were significantly reduced in predialysis and hemodialysis CKD patients compared to controls.
Conclusions:
- Decreased circulating EPCs in CKD patients may compromise vascular regeneration, elevating cardiovascular risk.
- Elevated endostatin levels in CKD warrant further investigation into their effects on endothelial function and progenitor cells.
Introduction:
Cardiovascular mortality is significantly increased in patients with chronic kidney disease (CKD). The number of circulating endothelial progenitor cells (EPCs) may affect vascular regenerative potential and thus influence cardiovascular mortality.
Objectives:
The aim of the study was to assess the number of circulating EPCs and the factors that potentially affect these cells, including vascular endothelial growth factor (VEGF) and endostatin, in patients with CKD.
Patients And Methods:
The study involved 139 patients divided into groups depending on the severity of renal impairment: 67 predialysis patients with CKD, 46 patients on hemodialysis (HD), and 26 patients on peritoneal dialysis (PD). Plasma levels of VEGF and endostatin were measured by enzyme-linked immunosorbent assays. The number of circulating EPCs, defined as CD34+VEGFR2+, was assessed in the whole blood using flow cytometry.
Results:
There was a positive correlation between VEGF and CD34+VEGFR2+ and the glomerular filtration rate. Endostatin levels increased with renal impairment. The highest endostatin levels were observed in HD and PD patients. The number of EPCs was significantly lower in predialysis patients with CKD and in HD patients, while in PD patients it was nonsignificantly lower compared with the control group.
Conclusions:
In patients with CKD, a decrease in circulating EPCs may impair vascular regenerative potential and thus contribute to a higher cardiovascular risk. The effect of significantly increased endostatin levels on the endothelial function and progenitors in patients with CKD requires further investigation.
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