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http://dx.doi.org/10.5352/JLS.2005.15.3.486

Effects of Exercise on Axonal Regeneration and Growth-associated Protein (GAP­43) Expression Following Sciatic Nerve Injury in Rats  

Seo Tae-Beom (Research Institute of Sports Medicine, Hannam University, Department of Oriental Medicine Daejon University, Department of Physical Education, Korea University)
Yoon Sung-Jin (Department of Physical Education, Korea University)
Kim Kyung-Tae (Department of Physical Education, Korea University)
Yoon Jae-Suk (Research Institute of Sports Medicine, Hannam University)
Yoon Jin-Hwan (Research Institute of Sports Medicine, Hannam University)
Park Sung-Tae (Research Institute of Sports Medicine, Hannam University)
Han In-Sun (Department of Oriental Medicine, Daejon University)
Namgung Uk (Department of Oriental Medicine, Daejon University)
Publication Information
Journal of Life Science / v.15, no.3, 2005 , pp. 486-491 More about this Journal
Abstract
Physical activity can improve sensorimotor recovery after peripheral nerve injury. Growth-associated protein 43 (GAP-43) is highly correlated with neuronal development and axonal regeneration and present in large quantities in the axonal growth cone. Using immunofluorescene staining and anterograde and retorgrade techniques, we identified enhanced axonal regrowth in distal stump of the sciatic nerve 3-14 days after crush injury in rats with treadmill training. We also carried out western blot to investigate GAP-43 protein expression in injured sciatic nerve. GAP-43 protein levels were highly induced in the injured sciatic nerve 3, 7 and 14 days compared with sedentary group. Thus, the present data provide a new evidence that treadmill training promoted axonal re-growth after injury and increased GAP-43 protein levels in the regenerating nerve.
Keywords
axonal regeneration; retrograde; anterograde; GAP-43;
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