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dc.contributor.advisor김원기-
dc.contributor.author연화-
dc.creator연화-
dc.date.accessioned2016-08-25T11:08:19Z-
dc.date.available2016-08-25T11:08:19Z-
dc.date.issued2006-
dc.identifier.otherOAK-000000012691-
dc.identifier.urihttps://dspace.ewha.ac.kr/handle/2015.oak/187046-
dc.identifier.urihttp://dcollection.ewha.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000012691-
dc.description.abstract허혈성 뇌졸중시 뇌에서는 많은 병리생리학적 변화가 일어난다. 주요한 경로로는 세포내로 흥분성 신경전달물질 및 칼슘등의 과도한 유입, 활성산소, 질소종의 과도한 생성, 염증성 반응 등이 일어나는 것으로 보고되고 있다. 본 연구는 새로운 뇌졸중 치료약물 개발의 목적으로 sauchinone의 신경보호작용을 알아내기 위하여 뇌졸중의 in vitro 모델 시트템을 이용하여 포도당결핍/재산소공급, NMDA 독성반응, 염증반응, 화학주성 등 실험을 수행하였다. 결과 10M의 sauchinone은 포도당결핍/재산소공급 모델과 NMDA 처리 모델에서 신경세포의 사멸을 억제하였고, 또한 뇌허혈시 미토콘드리아 기능장애를 막아주는 역할을 한다고 밝혀졌다. 지질다당류를 처리한 소교세포에서는 염증성 싸이토카인인 TNF-, IL-6 의 분비를 감소시켰으나 sauchinone은 활성산소, 질소종의 생성을 억제하지 못하였다. 이러한 작용 외에도 sauchinone은 MCP-1에 의한 화학 주성을 완벽하게 억제하였다. Sauchinone의 뇌허혈 세포모델에서의 복합성 보호작용은 이 물질의 뇌허혈 치료약물 개발가능성을 보여주고 있다.;Multifarious of pathophysiological changes occur after cerebral ischemia in the brain. The major pathways involve activation of ionotropic glutamate receptors, generation of reactive oxygen and nitrogen species and inflammatory cascades following ischemia also contributes to brain injury. To develop novel therapeutic strategies to reduce brain damage in ischemic stroke we investigated the neuroprotective effects of sauchinone in in vitro cerebral ischemic models. (oxygen glucose deprivation/re-oxygenation, N-methy-D-aspartate toxicity, inflammation and migration). At 10mM, sauchinone protected the neuronal cell injury caused by oxygen-glucose deprivation (OGD)/re-oxygenation or stimulated by NMDA in mixed neuronal-glial cells. It also contributed to inhibition of mitochondrial dysfunction. Altouh sauchinone did not block the formation of free radicals it decreased the production of proinflammatory cytokines (IL-6, TNF-a) in LPS-treated microglia. In addition, sauchinone also blocked microglial migration induced by MCP-1 stimulation. These combined actions of sauchinone indicate its therapeutic value in ischemic stroke.-
dc.description.tableofcontentsABSTRACT = ⅴ INTRODUCTION = 1 MATERIALS AND METHODS = 6 A. Cell cultures = 6 1. Pure microglia culture = 6 2. Mixed neuronal-glial culture = 6 B. Assessment of cell injury or death = 7 C. Oxygen-glucose deprivation followed by reoxygenation = 7 D. NMDA-induced cytotoxicity = 8 E. Membrane potential measurement = 8 F. Cytosolic [Ca2+]i measuremnet = 9 G. Isolation of liver mitochondria = 10 H. Measurement of MPTP opening in isolated mitochondria = 11 I. Free radical scavenging activity: 1,1-diphenyl-2- picrylhydrazyl(DPPH) test = 11 J. Nitrite assay = 12 K. Enzyme-linked immunosorbent assay (ELISA) = 12 L. Migration assay = 12 M. Statistical analysis = 13 RESULTS = 14 1. Protective effect of sauchinone on OGD/re-oxygenation or NMDA caused neuronal cell death. = 14 2. Effects of sauchinone on plasma membrane potential and Ca2+ influx caused by NMDA exposure = 19 3. Effects of sauchinone on MPT = 22 4. Sauchinone did not decrease ROS/RNS formation by LPS treatment = 24 5. Sauchinone reduced the release of cytokines production by LPS treatment = 28 6. Sauchinone blocked MCP-1-induced chemotaxis = 32 DISCUSSION = 34 REFERENCES = 37 국문초록 = 48-
dc.formatapplication/pdf-
dc.format.extent3871155 bytes-
dc.languageeng-
dc.publisher이화여자대학교 대학원-
dc.titleNeuroprotective effects of sauchinone in in vitro cerebral ischemia models-
dc.typeMaster's Thesis-
dc.format.pageⅴ, 49-
dc.identifier.thesisdegreeMaster-
dc.identifier.major대학원 의학과-
dc.date.awarded2006. 8-
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일반대학원 > 의학과 > Theses_Master
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