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KMID : 0387420090200010021
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Korean Society of Oriental Neuropsychiatry
2009 Volume.20 No. 1 p.21 ~ p.42
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The Protective Effect of Chunghyul-dan(Qingxuedan) Against 6-hydroxydopamine Induced Neurotoxicity.
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Kim Kwang-Ho
Kim Jong-Woo
Chung Sun-Yong
Oh Myung-Sook
Hwang Wei-Wan
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Abstract
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Objectives: This Study was performed to assess the antioxidant and neuroprotective effect of Chunghyul-dan(Qingxuedan) in PC12 cells and primary rat mesencephalic dopaminergic neurons.
Methods: The anioxidant effect was investigated using the DPPH radical and ABTS cation scavenging assays and total polyphenol amout of Chunghyul-dan(Qingxuedan). The neuroprotective effect of Chunghyul-dan(Qingxuedan) in PC12 cells was evaluated using MTT assay. The scavenging activity of Chunghyul-dan(Qingxuedan) on ROS production induced by 6-OHDA(6-hydroxydopamine) in PC12 cells was evaluated, as well as the attenuating effect on GSH reduction. Finally, we examined the neuroprotective effect of Chunghyul-dan(Qingxuedan) against 6-OHDA-induced toxicity in the primary culture of rat mesencephalic doperminergic neurons.
Results: Chunghyul-dan(Qingxuedan) showed concentration-dependent scavenging activities in DPPH radical and ABTS cation scavenging assays and it was not cytotoxic to PC12 cells. In post- and co-treatment, Chunghyul-dan(Qingxuedan) protected PC12 cells from the 6-OHDA induced toxicity at 50 and 100 μg/mL significantly. And Chunghyul-dan(Qingxuedan) decreased the 6-OHDA induced ROS production at a dose dependent manner, while increaing the 6-OHDA induced GSH reduction at 50 and 100 μg/mL significantly. Finally, Chunghyul-dan(Qingxuedan) showed signicant protection of rat mescencephalic dopaminergic neurons from 6-OHDA at 1 μg/mL.
Conclusions: These results demonstrate that Chunghyul-dan(Qingxuedan) has the antioxidant and neuroprotective effect against 6-OHDA induced cytotoxicity through decreasing ROS production and increasing GSH reduction.
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KEYWORD
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Chunghyul-dan(Qingxuedan), Antioxidant, Neuroprotective, DPPH radical, ABTS cation, ROS
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