Circulating progenitor cells and coronary microvascular dysfunction: Results from the NHLBI-sponsored Women's Ischemia Syndrome Evaluation – Coronary Vascular Dysfunction Study (WISE-CVD)

Girum Mekonnen, Salim S. Hayek, Puja K. Mehta, Qunna Li, Ernestine Mahar, Liping Mou, Tanya S. Kenkre, John W. Petersen, Babak Azarbal, Bruce Samuels, R. David Anderson, Tara Sedlak, Melody Zaya, Megha Agarwal, Afsaneh Haftbaradaran, Margo Minissian, Eileen Handberg, Carl J. Pepine, Christopher R. Cogle, C. Noel Bairey MerzEdmund K. Waller, Arshed A. Quyyumi

Research output: Contribution to journalArticlepeer-review

Abstract

Background and aims Ischemia stimulates a reparative response resulting in mobilization of circulating progenitor cells (CPCs). We hypothesized that women with chronic myocardial ischemia from coronary microvascular disease (CMD) will mobilize CPCs. Methods In 123 women with ischemic symptoms and signs but no obstructive coronary artery disease (CAD) enrolled in the Women's Ischemia Syndrome Evaluation – Coronary Vascular Dysfunction Study (WISE-CVD), we measured coronary flow reserve (CFR) in response to intracoronary adenosine. Peripheral blood CPCs were measured using flow cytometry for expression of CD34, CD133, CXCR4, and VEGFR2. Results Subjects were 53 ± 11 years, BMI 30 ± 8; 44% hypertensive, 11% diabetic, 23% hyperlipidemic and 7% smokers. Lower CFR correlated inversely with higher levels of hematopoietic-enriched CD34+ (r = −0.23, p = 0.011), CD34+/CD133+ (r = −0.24, p = 0.008), and CD34+/CXCR4+ (r = −0.19, p = 0.036) cells. In multivariable regression analyses, after adjusting for traditional cardiovascular risk factors, lower CFR remained significantly associated with elevated levels of CD34+ (β −0.18, p = 0.042), CD34+/CD133+ (β −0.24, p = 0.036), and CD34+/CXCR4+ (β −0.22, p = 0.050) cells. We found no association between CFR and CD34+/VEGFR2+ cells. Conclusions In women with non-obstructive CAD, impaired CFR is associated with higher levels of CPCs, suggesting that chronic myocardial ischemia from CMD stimulates CPC mobilization. The functional significance of elevated CPCs in these subjects requires further investigation as a potential biomarker and treatment target.

Original languageEnglish (US)
Pages (from-to)111-117
Number of pages7
JournalAtherosclerosis
Volume253
DOIs
StatePublished - Oct 1 2016
Externally publishedYes

Keywords

  • Circulating progenitor cells
  • Coronary flow reserve
  • Microvascular function

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Fingerprint

Dive into the research topics of 'Circulating progenitor cells and coronary microvascular dysfunction: Results from the NHLBI-sponsored Women's Ischemia Syndrome Evaluation – Coronary Vascular Dysfunction Study (WISE-CVD)'. Together they form a unique fingerprint.

Cite this