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  5. 普伐他汀鈉作用於馬兜鈴酸誘導小鼠腎病變之蛋白質體分析
 
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普伐他汀鈉作用於馬兜鈴酸誘導小鼠腎病變之蛋白質體分析

Other Title
Proteomics analysis of the effects of pravastatin sodium on aristolochic acid nephropathy in mice
Type
thesis
Date Issued
2013-06-28
Author(s)
廖芸珮
Advisor
陳世銘
Subjects
系所名稱:藥學系(碩博士班)
Description
學位別:碩士
語文別:中文
指導教授:陳世銘
共同指導教授:
口試委員:田履黛;張偉嶠
中文關鍵字:馬兜鈴酸腎病變;普伐他汀鈉;蛋白質體
Abstract
本研究利用蛋白質體分析方法,比較馬兜鈴酸腎病變小鼠與服用普伐他汀鈉 (pravastatin sodium)小鼠之腎臟組織蛋白質表現差異,期望能藉此評估 pravastatin sodium 作用於馬兜鈴酸腎病變之機轉。
所有6週齡雄性C3H/He小鼠均先投予馬兜鈴酸 (AA) 飲用水 0.5 毫克/公斤/天 8週,後2週治療組投予pravastatin sodium 20 毫克/公斤/天,AA組則投予於等量蒸餾水。控制組則給予正常飲用水10週。腎臟組織均質後,利用螢光高效能液相層析儀 (FD-HPLC) 分離並定量,收集表現量有差異的蛋白質,再以液相層析串聯質譜儀 (LC-MS/MS) 定性。
實驗結果顯示10種蛋白質與腎病變相關,在pravastatin組表現量上升之蛋白包含fumarate hydratase、isocitrate dehydrogenase、malate dehydrogenase、Hsp70,表現量分別為AA組的 1.5、1.39、1.39、10.58倍;在pravastatin治療組表現量下降蛋白包含cytochrome c、calreticulin、SOD-1、glutathione peroxidase、peroxiredoxin 4、ATP synthase,表現量約為AA組的 0.2-0.6倍。本研究發現於治療組中促進凋亡的蛋白cytochrome c、calreticulin 表現量下降,抑制凋亡路徑的蛋白Hsp70顯著增加;而AA組抗氧化酵素表現量較高的原因可能為AA誘導抗氧化酵素增加以緩解氧化壓力,而 pravastatin本身具有抗氧化機轉降低細胞內氧化壓力,可調控體內抗氧化之酵素之表現量下降。推論 pravastatin可能之腎臟保護機轉為:抑制細胞凋亡途徑、改善氧化壓力、增加參與檸檬酸循環的酵素表現量。
本研究結果將有助於找到馬兜鈴酸腎病變的生物標誌,期待可以應用至早期診斷,進一步了解pravastatin sodium作用於馬兜鈴酸腎病變之機轉。
URI
https://203.71.86.71/handle/123456789/14051

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