Comparative Effect of Treadmill Exercise on Mature BDNF Production in Control versus Stroke Rats
Open Access
- 4 September 2012
- journal article
- research article
- Published by Public Library of Science (PLoS) in PLOS ONE
- Vol. 7 (9), e44218
- https://doi.org/10.1371/journal.pone.0044218
Abstract
Physical exercise constitutes an innovative strategy to treat deficits associated with stroke through the promotion of BDNF-dependent neuroplasticity. However, there is no consensus on the optimal intensity/duration of exercise. In addition, whether previous stroke changes the effect of exercise on the brain is not known. Therefore, the present study compared the effects of a clinically-relevant form of exercise on cerebral BDNF levels and localization in control versus stroke rats. For this purpose, treadmill exercise (0.3 m/s, 30 min/day, for 7 consecutive days) was started in rats with a cortical ischemic stroke after complete maturation of the lesion or in control rats. Sedentary rats were run in parallel. Mature and proBDNF levels were measured on the day following the last boot of exercise using Western blotting analysis. Total BDNF levels were simultaneously measured using ELISA tests. As compared to the striatum and the hippocampus, the cortex was the most responsive region to exercise. In this region, exercise resulted in a comparable increase in the production of mature BDNF in intact and stroke rats but increased proBDNF levels only in intact rats. Importantly, levels of mature BDNF and synaptophysin were strongly correlated. These changes in BDNF metabolism coincided with the appearance of intense BDNF labeling in the endothelium of cortical vessels. Notably, ELISA tests failed to detect changes in BDNF forms. Our results suggest that control beings can be used to find conditions of exercise that will result in increased mBDNF levels in stroke beings. They also suggest cerebral endothelium as a potential source of BDNF after exercise and highlight the importance to specifically measure the mature form of BDNF to assess BDNF-dependent plasticity in relation with exercise.Keywords
This publication has 43 references indexed in Scilit:
- Circulating and Brain BDNF Levels in Stroke Rats. Relevance to Clinical StudiesPLOS ONE, 2011
- Exercise influences hippocampal plasticity by modulating brain-derived neurotrophic factor processingNeuroscience, 2011
- Body-Weight–Supported Treadmill Rehabilitation after StrokeNew England Journal of Medicine, 2011
- The Effects of Voluntary, Involuntary, and Forced Exercises on Brain-Derived Neurotrophic Factor and Motor Function Recovery: A Rat Brain Ischemia ModelPLOS ONE, 2011
- Microglial Involvement in Neuroplastic Changes Following Focal Brain Ischemia in RatsPLOS ONE, 2009
- Exercise-induced improvement in cognitive performance after traumatic brain injury in rats is dependent on BDNF activationBrain Research, 2009
- Treadmill Exercise Activates Subcortical Neural Networks and Improves Walking After StrokeStroke, 2008
- Brain‐derived neurotrophic factor functions as a metabotrophin to mediate the effects of exercise on cognitionEuropean Journal of Neuroscience, 2008
- Focal Photothrombotic Lesion of the Rat Motor Cortex Increases BDNF Levels in Motor-Sensory Cortical Areas Not Accompanied by Recovery of Forelimb Motor SkillsJournal of Neurotrauma, 2007
- Brain-Derived Neurotrophic Factor: A Newly Described Mediator of AngiogenesisTrends in Cardiovascular Medicine, 2007