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http://dx.doi.org/10.5352/JLS.2009.19.3.403

Effects of Treadmill Exercise on Memory, Hippocampal Cell Proliferation, BDNF, TrkB, and Forebrain Cholinergic Cells in Adolescent Rats  

Lee, Hee-Hyuk (Department of Sports Science, Hannam University)
Publication Information
Journal of Life Science / v.19, no.3, 2009 , pp. 403-410 More about this Journal
Abstract
This study investigated the effects of treadmill exercise on memory ability, cell proliferation, BDNF, and TrkB in the hippocampus and forebrain cholinergic cells in adolescent rats. Male Sprague-Dawley rats (4 weeks old) were randomly assigned to the following two groups: the sedentary group (n=10) and the exercise group (n=10). Rats in the exercise group were forced to run on a treadmill for 30 min, five times per week for 4 weeks. The latency of the step-through avoidance task was used in order to evaluate memory ability. Hippocampal brain-derived neurotrophic factor (BDNF) and tropomyosin-related kinase B (TrkB) expression were assessed by Western blotting. Hippocampal cell proliferation and forebrain cholinergic cells were assessed by immunohistochemistry. The present study showed that treadmill running during the adolescent period significantly improved memory capability, increased hippocampal cell proliferation, up-regulated hippocampal BDNF and TrkB expression, and enhanced the number of forebrain cholinergic cells. These results suggest that regular exercise during the adolescent period may enhance memory function.
Keywords
Exercise; adolescent period; memory; cell proliferation; BDNF;
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