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Dopamine에 의해 산화적 스트레스를 받은 Neuronal Cell에 뇌 보호 효과를 가지는 수종 생약추출물의 검색
구억,이학주,이동호,이현정,함아롬,마응천 한국생약학회 2009 생약학회지 Vol.40 No.1
Parkinson’s disease (PD) is the second most common neurodegenerative disorder after Alzhemier’s disease. Neuropathologically, PD is characterized by the selective loss of dopaminergic neurons. The neuronal toxicity of cytosolic excess dopamine (DA) has been described in many studies using several cell lines. In dopaminergic neurons, cytosolic excess DA is easily oxidized via monoamine oxidase (MAO)-B, tyrosinase or by auto-oxidation to produce neurotoxic metabolites such as DA quinone. So, in the present study, we induced cell death by treatment of DA (600 µM) in human neuroblastoma SH-SY5Y cell which was treated samples before 24 hr, and cell viability was measured by fluorescence activated cell sorter (FACs) analysis. Of those tested, the extracts of Poria cocos (赤茯笭)(whole), Gastrodia elata (rhizomes), Eucommia ulmoides (炒)(barks), Syneilesis palmata (whole), Acorus gramineus (rhizomes), Ligustrum japonicum (leaves) showed neuroprotective effects in dose dependent manner.
Nitric oxide에 의해 산화적 스트레스를 받은 Neuronal cell에 항산화 효과를 가지는 수종 생약추출물의 검색
구억,이학주,이동호,이현정,함아롬,조은영,마응천 한국생약학회 2008 생약학회지 Vol.39 No.4
The objective of this study is screening the anti-oxidative effects of several plant MeOH extracts against oxidative stress in Neuroblastoma cell. Oxidative stress has been implicated in the pathogenesis of many neurotoxicity, neurodegenerative disorders and cell death. This oxidative stress is generated by ROS (Reactive Oxygen Species) such as nitric oxide, nitrogen dioxide, peroxyl, superoxide (O2 - ), hydroxyl, alkoxyl. So, in the present study, we induced oxidative stress by treatment of sodium nitroprusside (2.5 mM) in human neuroblastoma SH-SY5Y cell which was treated samples before 24hr, and cell viability was measured by MTT reduction assay. Of those tested, the extracts of Paeonia japonica (roots), Eucommia ulmoides (炒)(barks), Paeonia japonica (曝乾)(roots), Phyllostachys bambusoides (stems), Polygala tenuifolia (去心, 炒)(roots), Paeonia japonica (roots), Polygala tenuifolia (roots), Machilus thunbergii (barks), Mallotus japonicus (leaves), Poria cocos (whole), Sophora flavescens (roots), Angelica tenuissima (roots), Angelica gigas (當歸尾)(roots) showed anti-oxidative effects[EC50<15.20 μg/ml(Carnosine:Positive control)]in dose dependent manner.