Abstract
Background and aims
Endothelial progenitor cells (EPCs) are bone marrow derived pluripotent vascular progenitor cells capable to contribute to reendothelialization and neovascularization. The number of circulating EPCs has been established as a biomarker of cardiovascular risk and is known to decrease with age. We determined the number of EPCs in teenagers and evaluated the influence of traditional risk factors focusing on overweight.
Methods
79 male adolescents were enrolled (age 13–17 years; 42 of normal weight: 64.1 ± 7.6 kg; 37 above the 90th BMI-percentile: 96.9 ± 20.5 kg). 41 healthy adults served as controls. EPCs were counted by flow cytometry (CD34+/−CD133/KDR). Besides traditional risk factors, cholesterol, and high sensitive CRP different cytokines were determined.
Results
Overweight adolescents have a higher systolic blood pressure, higher hsCRP, higher HbA(1c) and lower HDL. The number of CD34-negative EPCs, but not CD34-positive EPCs is higher in overweight adolescents. The overall level of EPCs is lower in adolescents compared to adults.
Conclusions
Overweight in adolescents influences EPCs in early life. CD34-negative EPCs might be more sensitive to the early risk profile and may represent a biological marker of occult vascular damage. Beginning insulin resistance, endothelial damage and elevation of EPCs could indicate the higher risk for future cardiovascular disease in obese teenagers.
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Acknowledgments
We thank Annett Schmidt for excellenct technical assistance. We also appreciate the support of Claudia Vilser and Niko Fiedler. CJ is supported by IZKF, Jena.
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Jung, C., Fischer, N., Fritzenwanger, M. et al. Endothelial progenitor cells in adolescents: impact of overweight, age, smoking, sport and cytokines in younger age. Clin Res Cardiol 98, 179–188 (2009). https://doi.org/10.1007/s00392-008-0739-5
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DOI: https://doi.org/10.1007/s00392-008-0739-5