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  • P-ISSN 1010-0695
  • E-ISSN 2288-3339

The Study on Regenerative Effects of Ginseng on Injured Axonal and Non-Neuronal cell

Journal of Korean Medicine / Journal of Korean Medicine, (P)1010-0695; (E)2288-3339
2008, v.29 no.5, pp.14-28


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Abstract

Objective:This study was carried out to understand effects of ginseng(hearinafter ; GS, Panax Ginseng) extract on regeneration responses on injured sciatic nerves in rats. Methods:Using white mouse, we damaged sciatic nerve & central nerve, and then applied GS to the lesion. Then we observed regeneration of axon and non-neuron. Results: 1.NF-200 protein immunostaining for the visualization of axons showed more distal elongation of sciatic nerve axons in GS-treated group than saline-treated control 3 and 7 days after crush injury. 2.GAP-43 protein was increased in the injured sciatic nerve and further increased by GS treatment. Enhanced GAP-43 protein signals were also observed in DRG prepared from the rats given nerve injury and GS treatment. 3.GS treatment in vivo induced enhanced neurite outgrowth in preconditioned DRG sensory neurons. In vitro treatment of GS on sensory neurons from intact DRG also caused increased neurite outgrowth. 4.Phospho-Erk1/2 protein levels were higher in the injured nerve treated with GS than saline. Phospho-Erk1/2 protein signals were mostly found in the axons in the injured nerve. 5.NGF and Cdc2 protein levels showed slight increases in the injured nerves of GS-treated group compared to saline-treated group. 6.The number of Schwann cell population was significantly increased by GS treatment in the injured sciatic nerve. GS treatment with cultured Schwann cells increased proliferation and Cdc2 protein signals. 7.GS pretreatment into the injured spinal cord generated increased astrocyte proliferation and oligodendrocytes in culture. In vitro treatment of GS resulted in more differentiated pericytoplasmic processes compared with saline treatment. 8.More arborization around the injury cavity and the occurrence at the caudal region of CST axons were observed in GS-treated group than in saline-treated group. Conclusion:GS extract may have the growth-promoting activity on regenerating axons in both peripheral and central nervous systems.

keywords
ginseng, axon, non-neuron, ginseng, axon, non-neuron


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