Document Type : Original Article (s)
Authors
1
Department of Physical Education and Sport Sciences, School of Humanities, Bojnourd Branch, Islamic Azad University, Bojnourd, Iran
2
Associate Professor, Department of Exercise Physiology, School of Sport Sciences, University of Mazandaran, Sari, Iran
3
Associate Professor, Department of Exercise Physiology, School of Sport Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
4
Assistant Professor, Department of Physical Education and Sport Sciences, School of Humanities, Bojnourd Branch, Islamic Azad University, Bojnourd, Iran
5
PhD of Nutrition, Food Safety Research Center (Salt), Semnan University of Medical Sciences, Semnan, Iran
Abstract
Background: Brain ischemia/reperfusion causes structural and functional damage in the hippocampus. Physical activity is an essential method for early rehabilitation after a stroke. The aim of this study was to determine the effect of 8 weeks of early endurance training on treadmill on improvement of the neurons of CA1 region of hippocampus and expression of A2A protein following cerebral ischemia/reperfusion in male rats.Methods: 21 male Wistar rats were randomly divided into three groups of sham, ischemia + control, and ischemia + exercise. 24 hours after induction of ischemia, the rats in exercise group ran 5 days a week, for 8 weeks. Ischemia was induced by blocking both common carotid arteries for 45 minutes. Ladder test, hematoxylin and eosinophil (H&E) staining, and immunohistochemical method were used to evaluate functional status, neuronal death, and protein expression, respectively.Findings: The brain ischemia was associated with an increase in neuronal death in the CA1 region of hippocampus, and reduced cognitive function and motor learning. Early training significantly decreased cell death, as well as impaired cognitive function and motor learning. Moreover, in ischemia + exercise group, expression of A2A did not change significantly compared to the ischemia + control group.Conclusion: This study showed that early training on treadmill, as a rehabilitation stimulant, would have protective effects against cell death, and can improve motor function.
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