Endothelial progenitor cells mobilization after maximal exercise according to heart failure severity

Figure 1 Boolean analysis. A and B: Flow cytometry analysis for the identification of cellular populations using monoclonal antibodies CD45; C: VEGFR₂; D: CD34; E: CD133. In all samples, the CD34 expression was weak. CPET: Cardiopulmonary exercise testing; VEGFR₂: Vascular endothelial growth factor receptor 2.

Figure 2 Boxplots representing the acute mobilization of each endothelial cellular population before and after a symptom limited maximal cardiopulmonary exercise testing between two severity groups according to the median value of peak oxygen uptake. Group 1: Peak oxygen uptake (VO₂) < 18.0 mL/kg/min; Group 2: Peak VO₂ ≥ 18.0 mL/kg/min). ^aP < 0.05 indicates statistically significantly increase.