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  5. 白藜蘆醇對高糖引起小老鼠間質細胞生長抑制現象的作用
 
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白藜蘆醇對高糖引起小老鼠間質細胞生長抑制現象的作用

Other Title
The Effects of Resveratrol on High Glucose-Induced Growth Arrest in Mouse Mesangial Cells
Type
thesis
Date Issued
2010-06-10
Author(s)
陳怡安
Advisor
林裕峰
Subjects
系所名稱:臨床醫學研究所
Description
學位別:碩士
語文別:中文
指導教授:林裕峰
共同指導教授:
口試委員:簡志誠;許永和
中文關鍵字:白藜蘆醇;高糖環境;抗氧化;凋亡
Abstract
背景:糖尿病腎病變是造成腎衰竭最主要的原因之一,血糖的控制不佳會增加心血管疾病的發生率。慢性的高糖環境下會對腎臟細胞,形成莫大的氧化壓力,氧化產物的過度製造增加,導致腎臟間質細胞的生長抑制及凋亡。我們評估白藜蘆醇這一個多酚構造、多功能的植物天然抗毒素是否可經由抗氧化、抗發炎的過程,減少小鼠腎臟間質細胞暴露在高糖環境下生長抑制及凋亡的現象。研究方法與材料:小鼠腎臟間質細胞分別被培養在含有6.25mM 較低糖分,及35mM 較高糖分環境下,和加入白藜蘆醇做治療。藉由顯微鏡、MTT test觀察其生長狀況。H2-DCFDA偵測細胞內過氧化物質含量。細胞的凋亡判定是運用流式細胞儀和Annexin-V以及propidium iodine的染色。藉由反轉錄聚合脢連鎖反應實驗測量TGFβ及HO-1含量。以及使用ELISA kit 定量 caspsae3。結果:高糖環境會有抑制間質細胞生長、造成細胞內ROS 上升(約增加~70 %;p < 0.05)及促進細胞凋亡現象(增加約1.5~1.8倍;p < 0.05) 。這些反應可因加入合理的生理劑量內的白藜蘆醇(1-2.5μM)而減少。此外也可以下降TGF-β,誘導HO-1酵素生成。可阻斷caspase 3 活性在高糖環境下(p < 0.05)。結論:我們證實了白藜蘆醇經由抗氧化過程可以減緩小鼠腎臟間質細胞暴露在高糖環境下凋亡的現象,而可以改善間質細胞數目的平衡。
URI
https://203.71.86.71/handle/123456789/13175

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