alexa Positive Association between Circulating CD34-Positive
ISSN: 2167-7182

Journal of Gerontology & Geriatric Research
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Research Article

Positive Association between Circulating CD34-Positive Cells and Urinary Sodium Excretion in Elderly Japanese Men: The Nagasaki Islands Study

Yuji Shimizu1*, Shimpei Sato1, Jun Koyamatsu2, Hirotomo Yamanashi2, Mami Tamai3, Koichiro Kadota1, Kazuhiko Arima4,
Hironori Yamasaki5, Noboru Takamura6 and Takahiro Maeda1,2
1 Department of Community Medicine, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
2 Department of Island and Community Medicine, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
3 Unit of Translational Medicine, Department of Immunology and Rheumatology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
4 Department of Public Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
5 Center for Health and Community Medicine, Nagasaki University, Nagasaki Japan
6 Department of Global Health, Medicine and welfare, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
Corresponding Author : Yuji Shimizu
Department of Community Medicine
Nagasaki University Graduate School of Biomedical Science
Nagasaki-shi, Sakamoto 1-12-4
Nagasaki, 852-8523, Japan
Tel: +81-95-819-7578
Fax: +81-95-819-7189
E-mail: [email protected]
Received December 18, 2013; Accepted January 17, 2014; Published January 20, 2014
Citation: Shimizu Y, Sato S, Koyamatsu J, Yamanashi H, Tamai M, et al. (2014) Positive Association between Circulating CD34-Positive Cells and Urinary Sodium Excretion in Elderly Japanese Men: The Nagasaki Islands Study. J Gerontol Geriat Res 3:145. doi:10.4172/2167-7182.1000145
Copyright: © 2014 Shimizu Y. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 

Abstract

Increasing evidence points to involvement of circulating Endothelial Progenitor Cells (EPCs) in maintenance of the vasculature. On the other hand, daily salt intake is reportedly associated with vascular damage such as seen in atherosclerosis and arteriosclerosis. However, no study has investigated the association between circulating endothelial progenitor cells and salt intake in relation to vascular status. To investigate the association between EPCs (CD34-positive cells) and estimated total volume of daily urinary sodium excretion, which is known to be a marker of daily salt intake, we conducted a cross-sectional study of 94 elderly Japanese men aged 60-89 years who underwent general health checks. There was a slightly but significantly positive association between number of circulating CD34- positive cells and daily urinary sodium excretion especially for the participants without a history of Cardiovascular Disease (CVD). A simple analysis of the relationship between these two variables yielded r=0.21 (P=0.039) for total subjects, r=0.29 (P=0.009) for participants without and r=0.18 (P=0.538) for participants with a history of CVD. This suggests that vascular damage due to a high daily intake of salt may stimulate EPC production in healthy elderly Japanese men especially in those without a history of CVD.

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