Circulating Osteogenic Progenitor Cells in Mild, Moderate, and Severe Aortic Valve Stenosis

Mohammed Al-Hijji, Nupoor Narula, Jason L. Go, Sundeep Khosla, Maurice Enriquez-Sarano, Darrell Loeffler, Ryan Lennon, Lilach O. Lerman, Amir Lerman

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The aim of this study was to characterize endothelial progenitor cells with osteoblastic phenotype (EPC-OCNs) and their role in individuals with varying degrees of aortic stenosis (AS). Peripheral blood mononuclear cells retrieved from blood samples of individuals with mild (n=40), moderate (n=35), or severe (n=103) AS from September 16, 2008, through March 30, 2015, were analyzed by flow cytometry for the EPC surface markers CD34, CD133, and kinase insert domain receptor (KDR) and the osteoblastic cell surface marker OCN. Levels of EPC-OCNs were correlated with AS severity and calcifications. Patients with severe AS had significantly elevated numbers of total circulating EPC-OCNs, including the EPC-OCN subtypes CD133 + /OCN + , CD34 + /CD133 + /OCN + , and CD133 + /KDR + /OCN + , compared with those with mild AS. Individuals with moderate AS also had significantly increased numbers of the circulating progenitor cell CD133 + /OCN + compared with patients with mild AS. There was a significant association between total circulating EPC-OCN levels and aortic valve (AV) calcification, AV mean gradient, and AV area measured by echocardiography. In summary, this study found the presence of circulating EPC-OCNs in patients with progressive AV stenosis. These findings might support the potential role for EPC-OCNs in the progression of AV stenosis and calcification.

Original languageEnglish (US)
Pages (from-to)652-659
Number of pages8
JournalMayo Clinic proceedings
Issue number4
StatePublished - Apr 2019

ASJC Scopus subject areas

  • General Medicine


Dive into the research topics of 'Circulating Osteogenic Progenitor Cells in Mild, Moderate, and Severe Aortic Valve Stenosis'. Together they form a unique fingerprint.

Cite this