Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 11/10/2011
Publication Date: 4/6/2012
Citation: Yan L, DeMars LC. Non-motorized voluntary running does not affect experimental and spontaneous metastasis in mice. Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 March 31-April 4; Chicago, IL. Philadelphia (PA): AACR; 2012; 2012. Abst nr 595.
Technical Abstract: The present study investigated the effects of non-motorized voluntary running on experimental metastasis of B16BL/6 melanoma and spontaneous metastasis of Lewis lung carcinoma (LLC) in male C57BL/6 mice. After 9 weeks of running, mice (n = 30 per group) received an intravenous injection of B16BL/6 cells or a subcutaneous injection of LLC cells, and then they continued with their running activities. Experiments were terminated 2 weeks after the intravenous injection of B16BL/6 cells or 2 weeks after surgical removal of the primary tumor from mice subcutaneously injected with LLC cells. Mice in the running group ran an average of 4-6 km/day for the duration of the experiment. Voluntary running reduced body weight compared with sedentary controls, but there were no differences in the number and size of lung metastases between groups with either model. Voluntary running significantly reduced plasma insulin and leptin levels and increased adiponectin level in mice with and without LLC compared with their respective sedentary controls. Having LLC significantly increased plasma concentrations of vascular endothelial growth factor (VEGF), platelet-derived growth factor-BB (PDGF-BB), PDGF-AB and monocyte chemotactic protein-1 (MCP-1) in mice. Voluntary running significantly increased plasma PDGF-BB and PDGF-AB, but not VEGF and MCP-1, in mice with LLC compared with their sedentary counterparts. In summary, non-motorized voluntary running was favorable to body weight and the expression of related adipokines, but at 4-6 km/day it did not affect either experimental or spontaneous metastasis in mice.