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  5. 評估2, 3, 5, 4’-tetrahydroxystilbene-2-O-d-glucoside對於阿茲海默症的病理生理現象之影響
 
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評估2, 3, 5, 4’-tetrahydroxystilbene-2-O-d-glucoside對於阿茲海默症的病理生理現象之影響

Other Title
Evaluation of the effect of 2, 3, 5, 4’-tetrahydroxystilbene-2-O-d-glucoside on the pathophysiology of Alzheimer’s disease
Type
thesis
Date Issued
2016-07-19
Author(s)
劉璟
Advisor
徐松柏
楊良友
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:徐松柏
共同指導教授:楊良友
口試委員:陳彥州;蕭哲志;彭志維
中文關鍵字:阿茲海默症;何首烏;病理生理現象;認知功能障礙
英文關鍵字:Polygonum multiflora;2, 3, 5, 4’-tetrahydroxystilbene-2-O-d-glucoside;THSG;pathophysiology;cognitive deficit
Abstract
2, 3, 5, 4’-tetrahydroxystilbene-2-O-d-glucoside (THSG)是從何首烏中 (Polygonum multiflora, PM)萃取出來的主要成分。近年來THSG逐漸被發現有神經保護及抗發炎反應的效果,有研究在in vitro實驗中觀察到THSG可以抑制BV2細胞株的增生以及TNF-α、IL-1β等細胞激素的mRNA表現量;另外在帕金森氏症的動物模型中也觀察到THSG可以抑制神經細胞之凋亡。發炎反應及神經死亡也是會出現在阿茲海默症中的病理生理現象,因此本研究利用THSG此效用作為著立點來觀察其對阿茲海默症之病理生理現象的影響,探討THSG對於阿茲海默症是否也具有神經保護的效果。本研究中分為兩個實驗: (1)THSG預防效果實驗:以管餵方式給予6個月的THSG藥物於尚未達到發病年齡之3個月大之APP/PS1小鼠,探討THSG是否能延緩或預防阿茲海默症之病理生理現象及認知功能的衰退 (2)THSG治療效果實驗:以管餵方式給予6個月THSG藥物治療於相當於阿茲海默症中後期之12個月大的APP/PS1小鼠,探討THSG是否能改善阿茲海默症之病理生理現象以及學習記憶能力。
本研究實驗結果發現THGS並不會參與APP的水解反應也不會影響Aβ之堆積量,然而在預防效果實驗中THSG可以有效地抑制APP/PS1小鼠皮質層中星狀細胞的活化;在THSG治療效果實驗中,THSG可以抑制年齡18個月大之APP/PS1小鼠皮質層中的神經細胞死亡,而透過新物辨識測試也觀察到經過6個月THSG的治療後APP/PS1小鼠的學習認知功能可以回復到和野生型小鼠一樣的程度。本研究證實THSG可以作為阿茲海默症之潛力藥物,其可以改善阿茲海默症之病理生理現象以及實質的改善學習認知功能。
URI
https://203.71.86.71/handle/123456789/57594

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