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  5. 二羥基異黃酮對星狀神經膠細胞的抗發炎作用
 
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二羥基異黃酮對星狀神經膠細胞的抗發炎作用

Other Title
Anti-inflammation Effect of Daidzein in Astroglial Cells
Type
thesis
Date Issued
2007-06-25
Author(s)
林鈺珊
Advisor
許秀蘊
Subjects
系所名稱:藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:許秀蘊
共同指導教授:孫瑞昇
口試委員:陳博光;蔡東湖
中文關鍵字:二羥基異黃酮;星狀神經膠細胞;阿茲海默症
Abstract
阿茲海默症是ㄧ種在老年族群中常見到的失智症。病理上的特徵包括有:神經細胞的減少、神經膠細胞上有amyloid-β(Aβ) 產生不正常的堆積,以及神經元內部出現神經纖維纏繞的現象。這些病理表現中,Aβ在阿茲海默症的病程扮演了重要的角色。Aβ堆積的位置通常在神經膠細胞上,神經膠細胞中的星狀神經膠細胞是影響神經元生長的ㄧ個重要細胞,Aβ會直接刺激星狀神經膠細胞產生活化的現象。當星狀神經膠細胞活化的時候,會釋放出一些發炎性物質或生長因子來對抗外來的傷害。但是,如果刺激性傷害不斷的產生,導致星狀神經膠細胞不斷的被活化,大量的發炎性物質作用下,就可能會造成慢性發炎的現象。過量的發炎反應本身也是一種刺激,會造成更多的傷害,以及導致神經退化性疾病的產生。所以,Aβ和發炎反應都是造成阿茲海默症病理表現的重要原因。這篇研究主要是想探討:在受到Aβ和lipopolysaccharide(LPS)的刺激之前,先加入
具有抗發炎作用的藥物daidzein,daidzein是否能減少促進發炎的物質產生。結果顯示daidzein可以減少NO的產生以及降低interleukin-1 (IL-1)、interleukin-6 (IL-6) 和tumor necrosis factor-alpha (TNF-α)的mRNA表現,daidzein在正常情形下也可以促進星狀神經膠細胞的生長;在受到Aβ和LPS刺激下,也可以對星狀神經膠細胞產生保護作用。所以根據結果推測,先加入daidzein或許可以改善發炎反應並且延緩阿茲海默症進一步的惡化。
URI
https://203.71.86.71/handle/123456789/12191
https://hdl.handle.net/11296/ugc3aj
File(s)
No Thumbnail Available
Name

C0183506.pdf

Size

10.06 MB

Format

Adobe PDF

Checksum

(MD5):9d82fad464742ffc71f7c6eeaaefdbfc

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