The number of circulating CD34-positive cells is an independent predictor of coronary artery calcification progression: Sub-analysis of a prospective multicenter study

Keishi Ichikawa, Toru Miyoshi, Kazuhiro Osawa, Takashi Miki, Kunihisa Kohno, Kazufumi Nakamura, Yasushi Koyama, Hiroshi Ito

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Decreases in circulating CD34-positive cells are associated with increases in cardiovascular events. We investigated the association between the number of CD34-positive cells and the progression of coronary artery calcification (CAC), a marker of atherosclerosis, in patients with hyper-cholesteremia under statin therapy in a sub-analysis of a multicenter study. Methods: In the principal study, patients with CAC scores of 1–999 were treated with pitavastatin. Measurement of CAC by non-enhanced computed tomography and a blood test were performed at baseline and at 1-year follow-up. Patients were divided into two groups: CAC progression (change in CAC score > 0) and non-progression. The number of circulating CD34-positive cells was counted using flow cytometry. Results: A total of 156 patients (mean age 67 years, 55% men) were included in this sub-analysis. CD34 positive cell numbers at baseline as a continuous variable was inversely correlated with annual change in the log-transformed CAC score (r = –0.19, p = 0.02). When patients were divided into high and low CD34 groups based on the median value of 0.8 cells/μL, the adjusted change in CAC score in the low-CD34 group was significantly greater than that in the high-CD34 group (54.2% vs. 20.8%, re-spectively, p = 0.04). In multiple logistic analysis, a low CD34-positive cell number was an independent predictor of CAC progression, with an odds ratio of 2.88 (95% confidence interval 1.28–6.49, p = 0.01). Conclusions: Low numbers of CD34-positive cells are associated with CAC progression in patients with hypercholesterolemia under statin therapy. The number of CD34-positive cells may help to identify patients at increased cardiovascular risk.

Original languageEnglish
Pages (from-to)423-431
Number of pages9
JournalCardiology Journal
Volume29
Issue number3
DOIs
Publication statusPublished - May 31 2022

Keywords

  • computed tomography
  • coronary artery calcification
  • endothelial progenitor cells
  • hypercholesterolemia

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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