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  5. 枸杞多醣萃取物與甜菜鹼對大鼠肝臟星狀HSC-T6細胞活化 與纖維化之影響
 
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枸杞多醣萃取物與甜菜鹼對大鼠肝臟星狀HSC-T6細胞活化 與纖維化之影響

Other Title
Effects of Lycium barbarum polysaccharides extract and betaine on cell activation and liver fibrosis in rat hepatic stellate HSC-T6 cells
Type
thesis
Date Issued
2016-06-27
Author(s)
李柏盈
Advisor
趙振瑞
Subjects
系所名稱:保健營養學研究所
Description
學位別:碩士
語文別:中文
指導教授:趙振瑞
共同指導教授:
口試委員:蔡英傑;楊素卿
中文關鍵字:枸杞多醣體;肝臟星狀細胞;肝纖維化
英文關鍵字:Lycium barbarum polysaccharides;hepatic stellate cells;liver fibrosis
Abstract
根據行政院衛生福利部公布之資料,2014年臺灣癌症前十大死因中,肝和肝內膽管癌排名高居第二,死亡百分比為17.7%,顯示肝臟疾病影響國人健康不容忽視。肝纖維化的成因與氧化壓力密切相關,其會促使肝臟星狀細胞活化與轉形生長因子(transforming growth factor-β, TGF-β)分泌,使膠原蛋白過度累積於細胞外基質,造成纖維化。枸杞多醣體(Lycium barbarum polysaccharides, LBP)在過去活體研究模式下顯示可藉抑制氧化壓力、發炎反應與細胞凋亡達到護肝的效果。本研究使用H2O2誘導細胞活化後,給予枸杞多醣萃取物,探討其對大鼠肝臟星狀HSC-T6細胞活化與纖維化指標之影響。結果顯示,細胞經5 μM H2O2誘導活化24小時後,α-平滑肌肌動蛋白(α-smooth muscle actin, α-SMA)、TGF-β1及基質金屬蛋白酶(matrix metalloproteinase, MMP)-2蛋白表現量較控制組顯著上升,10、50 μg/mL的LBP及betaine皆可以使α-SMA蛋白表現量顯著下降;50 μg/mL LBP與betaine可以使TGF-β1與matrix metalloproteinase (MMP)-2蛋白表現量顯著下降。10 μg/mL LBP可組織金屬蛋白酶抑制物(tissue inhibitor of metalloproteinase, TIMP)-1蛋白表現量顯著較控制組降低;10 μg/mL betaine可使TIMP-2蛋白表現量顯著較控制組及誘發組高。顯示LBP與枸杞活性成分之一的betaine可抑制細胞活化與纖維化指標,可能可以減緩肝纖維化的發生,對於TIMP-1與TIMP-2蛋白表現亦有潛在調控的可能。
URI
https://203.71.86.71/handle/123456789/57465

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