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  5. FXYD2蛋白質在脊髓損傷動物之表現
 
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FXYD2蛋白質在脊髓損傷動物之表現

Other Title
The expression of FXYD2 protein in spinal cord injury animals
Type
thesis
Date Issued
2013-01-25
Author(s)
陳郁雯
Advisor
楊良友
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:英文
指導教授:楊良友
共同指導教授:
口試委員:陳彥州;林靜茹
中文關鍵字:脊髓損傷;星狀細胞;神經細胞
Abstract
脊髓損傷(Spinal Cord Injury) 最常見是由車禍意外、從高處摔落或是運動傷害等所造成。受傷該處的神經細胞因直接受到撞擊而死亡,接著又因二次傷害(secondary injury)所引發的神經細胞死亡,因而造成脊髓的永久損傷,傷勢嚴重者常導致全身癱瘓或半身癱瘓。研究至今對於脊髓損傷仍然沒有有效的治療方式,因此研究脊髓損傷造成神經細胞死亡的相關細胞及分子機制是目前世界上重要的研究課題之一,而其研發成果也成為找尋治療脊髓損傷藥物的關鍵。過去的初步研究發現脊髓損傷會誘導Fxyd2基因的表現增加,另外研究也發現Fxyd2基因剔除鼠於脊髓損傷後其脊髓損傷的程度明顯會比正常基因型老鼠的脊髓損傷輕微。這些證據均顯示FXYD2可能在中樞神經系統之中對於神經的受損與修復扮演一定的功能與角色。因此,在本研究中我們將探討脊髓損傷是否會影響FXYD2蛋白質的展現。我們利用自製抗體來探討在大鼠脊髓損傷後其FXYD2蛋白的表現。我們的結果顯示FXYD2蛋白質在正常大鼠脊髓主要表現於神經細胞當中,然而在星狀細胞中其表現則不顯著。此外,脊髓損傷顯著降低FXYD2蛋白質的表現量。免疫螢光染色實驗進一步發現FXYD2蛋白質在脊髓損傷的動物於星狀細胞中的表現量明顯增加,而在去除Fxyd2基因的小鼠其glial scar (GFAP的免疫染色)比起正常基因型的小鼠來的少。以上的證據整體顯示FXYD2蛋白質似乎在脊髓受損後glial scar的形成扮演重要的角色。
URI
https://203.71.86.71/handle/123456789/13937

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