• Users Online: 140
  • Home
  • Print this page
  • Email this page
Home About us Editorial board Search Ahead of print Current issue Archives Submit article Instructions Subscribe Contacts Login 
Year : 2012  |  Volume : 37  |  Issue : 4  |  Page : 262-267

The reliability of endothelial progenitor cells (CD34+, KDR+, and CD34+/KDR+) in the diagnosis of coronary artery disease and its severity

1 Department of Internal Medicine, Assiut University Hospital, Assiut, Egypt
2 Department of Clinical Pathology, Assiut University Hospital, Assiut, Egypt

Correspondence Address:
Eman M. Sewify
Department of Internal Medicine, Assiut University Hospital, P.O. Box 71526, Assiut
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.7123/01.EJH.0000419284.25275.82

Rights and Permissions


Bone marrow-derived endothelial progenitor cells (EPCs) play an integral role in the regulation and protection of the endothelium, as well as new vessel formation. Changes in EPC number and function during coronary heart disease allow their use as a biomarker. However, so far, there is no suggested definite level at which we can diagnose coronary artery disease (CAD) or determine the severity of the disease.

Aim of the work

To assess the sensitivity, specificity, and accuracy of the circulating EPCs count to diagnose coronary heart disease and to predict the severity of the disease.

Patients and methods

The percentage and count of circulating EPCs (CD34+KDR+, CD34+, and KDR+) were measured by flow cytometry in 52 patients who underwent diagnostic angiography. The correlation between the level of the EPCs on the one hand and the presence or absence of CAD and the Gensini score calculated for each patient on the other was determined.


Thirty-eight patients were found to have CAD and 14 had normal coronaries. For those with CAD, 22 had single-vessel disease and 16 had multiple vessel disease. It was found that EPCs (CD34+KDR+% and count and CD34+%) were significantly lower in patients with CAD compared with those with normal coronaries. CD34+KDR+% had an AUROC of 0.846 to diagnose CAD, with a sensitivity of 45.5%, a specificity of 100%, a positive predictive value (PPV) of 100%, a negative predictive value (NPV) of 64.3%, and an accuracy of 72.75%. CD34+% and count and CD34+KDR+ count were negatively correlated with the Gensini score. CD34+% has an AUROC of 0.802 to diagnose the Gensini score of more than 6, with a sensitivity of 100%, a specificity of 55.2%, a PPV of 69%, an NPV of 100%, and an accuracy of 77.6%.


EPCs decrease in patients with CAD compared with those without CAD. CD34+KDR+% can diagnose CAD with a sensitivity, specificity, PPV, NPV, and accuracy of 45.55, 100, 100, 64.3, and 72.75%. CD34% can help to exclude the presence of severe CAD with a sensitivity, specificity, PPV, NPV, and accuracy of 100, 55.2, 69, 100, and 77.6%, respectively.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded122    
    Comments [Add]    

Recommend this journal