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  5. 麩醯胺對於糖尿病下肢缺血小鼠內皮前驅細胞之影響
 
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麩醯胺對於糖尿病下肢缺血小鼠內皮前驅細胞之影響

Other Title
Effects of glutamine on endothelial progenitor cells in diabetes mice subjected to hind limb ischemia
Type
thesis
Date Issued
2016-06-22
Author(s)
蘇小慈
Advisor
葉松鈴
Subjects
系所名稱:保健營養學研究所
Description
學位別:碩士
語文別:中文
指導教授:葉松鈴
共同指導教授:
口試委員:羅慧珍;楊素卿
中文關鍵字:糖尿病;下肢缺血;麩胺酸;內皮前驅細胞
英文關鍵字:diabetic;ischemic limb;glutamine;endothelial progenitor cells
Abstract
糖尿病為常見之慢性代謝異常疾病,有高心血管疾病發生風險,可能與糖尿病患體內較低的內皮前驅細胞 (endothelial progenitor cells, EPCs)有關。EPCs由骨髓細胞生成,會分化為具有功能之內皮細胞,能夠修復內皮細胞並參與血管新生作用。麩醯胺 (glutamine, GLN) 為人體中含量最豐富的游離胺基酸,先前研究指出GLN具有抗氧化、抗發炎及免疫調節之作用。本實驗以糖尿病下肢缺血動物模式探討給予GLN對EPCs調動及血管內皮修復之影響。實驗共分八組分別為糖尿病、糖尿病缺血1、7、21天犧牲組、糖尿病麩醯胺及糖尿病缺血麩醯胺1、7、21天犧牲組。以AIN-93G為基本飲食,麩醯胺組以含量占總氮量25%之GLN取代部分酪蛋白。實驗結果發現添加GLN的組別會顯著增加糖尿病缺血小鼠血液EPCs比率、血漿stromal-derived factor (SDF)-1濃度、肌肉vascular endothelial growth factor (VEGF)蛋白表現量、肌肉matrix metalloproteinase-9、SDF-1、hypoxia-inducible factors-1、VEGF mRNA表現量,組織免疫染色也顯示缺血組織有較高的CD31表現量。本研究結果顯示飲食中添加GLN能促進EPCs之調動、增加血液EPCs比率,並有助於改善缺血組織之血管修復作用。
URI
https://203.71.86.71/handle/123456789/57487

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