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http://dx.doi.org/10.4040/jkan.2011.41.2.197

The Effect of Treadmill Exercise on Ischemic Neuronal Injury in the Stroke Animal Model: Potentiation of Cerebral Vascular Integrity  

Kang, Kyoung-Ah (Department of Nursing, Mokpo Catholic University)
Seong, Ho-Hyun (College of Nursing Science, Kyung Hee University)
Jin, Han-Byeol (College of Nursing Science, Kyung Hee University)
Park, Jong-Min (College of Nursing Science, Kyung Hee University)
Lee, Jong-Min (Department of Rehabilitation, College of Medicine, Konkuk University)
Jeon, Jae-Yong (Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Kim, Youn-Jung (College of Nursing Science, East West Nursing Institute, Kyung Hee University)
Publication Information
Journal of Korean Academy of Nursing / v.41, no.2, 2011 , pp. 197-203 More about this Journal
Abstract
Purpose: This study was done to identify whether pre-conditioning exercise has neuroprotective effects against cerebral ischemia, through enhance brain microvascular integrity. Methods: Adult male Sprague-Dawley rats were randomly divided into four groups: 1) Normal (n=10); 2) Exercise (n=10); 3) Middle cerebral artery occlusion (MCAo), n=10); 4) Exercise+MCAo (n= 10). Both exercise groups ran on a treadmill at a speed of 15 m/min, 30 min/day for 4 weeks, then, MCAo was performed for 90 min. Brain infarction was measured by Nissl staining. Examination of the remaining neuronal cell after MCAo, and microvascular protein expression on the motor cortex, showed the expression of Neuronal Nuclei (NeuN), Vascular endothelial growth factor (VEGF) & laminin. Results: After 48 hr of MCAo, the infarct volume was significantly reduced in the Ex+MCAo group ($15.6{\pm}2.7%$) compared to the MCAo group ($44.9{\pm}3.8%$) (p<.05), and many neuronal cells were detected in the Ex+ MCAo group ($70.8{\pm}3.9%$) compared to the MCAo group ($43.4{\pm}5.1%$) (p<.05). The immunoreactivity of laminin, as a marker of microvessels and Vascular endothelial growth factor (VEGF) were intensively increased in the Ex+MCAo group compared to the MCAo group. Conclusion: These findings suggest that the neuroprotective effects of exercise pre-conditioning reduce ischemic brain injury through strengthening the microvascular integrity after cerebral ischemia.
Keywords
Exercise; Brain ischemia; Evidence-based nursing;
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Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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