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Article
Aging and Endothelial Progenitor Cell Telomere Length in Healthy Men
Clinical Chemistry and Laboratory Medicine
  • Erich J Kushner
  • Gary P. Van Guilder
  • Owen J Maceneaney
  • Jennifer N Cech
  • Brian L Stauffer
  • Christopher A DeSouza
Document Type
Article
Publication Date
1-1-2009
Abstract
BACKGROUND: Telomere length declines with age in mature endothelial cells and is thought to contribute to endothelial dysfunction and atherogenesis. Bone marrow-derived circulating endothelial progenitor cells (EPCs) are critical to vascular health as they contribute to both reendothelialization and neovascularization. We tested the hypothesis that EPC telomere length decreases with age in healthy adult humans. METHODS: Peripheral blood samples were collected from 40 healthy, non-obese, sedentary men: 12 young (age 21-34 years), 12 middle-aged (43-55 years) and 16 older (57-68 years). Putative EPCs were isolated from peripheral blood mononuclear cells and telomere length was determined using genomic DNA preparation and Southern hybridization techniques. RESULTS: EPC telomere length (base pairs) was approximately 20% (p=0.01) lower in the older (8492+523 bp) compared to the middle-aged (10,565+572 bp) and young (10,205+501 bp) men. Of note, there was no difference in EPC telomere length between the middle-aged and young men. CONCLUSIONS: These results demonstrate that EPC telomere length declines with age in healthy, sedentary men. Interestingly, telomere length was well preserved in the middle-aged compared to young men, suggesting that EPC telomere shortening occurs after the age of 55 years.
Pages
7
Type
text
Format
application/pdf
Language
en
PMCID
PMC2646422
DOI of Published Version
10.1515/CCLM.2009.016
Publisher
De Gruyter
Rights

In Copyright - Non-Commercial Use Permitted
http://rightsstatements.org/vocab/InC-NC/1.0/

Comments

This is the NIH Public Access Authors Manuscript. This article was published in Clin Chem Lab Med. 2009 ; 47(1): 47–50. doi:10.1515/CCLM.2009.016

Citation Information
Erich J Kushner, Gary P. Van Guilder, Owen J Maceneaney, Jennifer N Cech, et al.. "Aging and Endothelial Progenitor Cell Telomere Length in Healthy Men" Clinical Chemistry and Laboratory Medicine Vol. 47 Iss. 1 (2009) p. 47 - 50
Available at: http://works.bepress.com/gary-vanguilder/28/