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  5. 紅肉李對STZ誘發之糖尿病大鼠認知功能及大腦神經退化相關蛋白質表現的影響
 
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紅肉李對STZ誘發之糖尿病大鼠認知功能及大腦神經退化相關蛋白質表現的影響

Other Title
Effects of oriental plums on the expressions of the cognitive function- and the cerebral neurodegeneration-related proteins in STZ-induced diabetic rats
Type
thesis
Date Issued
2012-06-15
Author(s)
李高廷
Advisor
林士祥
Subjects
系所名稱:保健營養學研究所
Publisher
保健營養學研究所
Description
學位別:碩士
語文別:中文
指導教授:林士祥
共同指導教授:
口試委員:沈賜川;陳玉華
中文關鍵字:阿茲海默症;糖尿病;紅肉李;metformin;認知功能
Abstract
超過95%的阿茲海默症病人屬於偶發性阿茲海默症。過去研究指出第二型糖尿病為偶發性阿茲海默症的危險因子之一,其主要原因可能是胰島素抗性導致胰島素訊息傳遞的受損,使腦部蛋白質表現異常而造成認知功能衰退。在動物及臨床研究上,多酚類物質已被應用於預防阿茲海默症的發生,然而至今仍缺乏多酚類物質預防糖尿病引起阿茲海默症的動物研究。本實驗目的為探討富含多酚類物質的紅肉李(Prunus salicina Lindl)對第二型糖尿病大鼠認知功能及大腦神經退化之相關蛋白質表現的影響。將nicotinamide/streptozotocin誘發的第二型糖尿病大鼠介入紅肉李飲食兩個月,並對照糖尿病用藥metformin之正控制飲食。以莫氏水迷宮及被動迴避試驗評估大鼠的認知功能,並評估胰島素抗性、血清脂質過氧化程度及大腦中阿茲海默症病理蛋白質β-澱粉樣蛋白(Aβ)及磷酸化tau蛋白的表現。結果發現餵食紅肉李可顯著改善糖尿病大鼠的高血糖、胰島素抗性及空間學習能力,降低血清脂質過氧化程度、大腦皮質Aβ及磷酸化tau蛋白的表現(p < 0.05),並減少海馬迴Aβ的堆積。紅肉李可能透過降低高血糖、胰島素抗性及氧化壓力,而降低大腦中阿茲海默症病理蛋白質的表現,進而減緩糖尿病大鼠認知功能的衰退。
URI
https://203.71.86.71/handle/123456789/10994

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