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  5. 橄欖果萃取物對於高脂血症倉鼠之脂質代謝、抗氧化活性與粒線體功能的影響
 
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橄欖果萃取物對於高脂血症倉鼠之脂質代謝、抗氧化活性與粒線體功能的影響

Other Title
Effects of olive fruit extract on lipid metabolism, antioxidant activity and mitochondrial function in hyperlipidemic hamsters
Type
thesis
Date Issued
2014-06-24
Author(s)
王玟茵
Advisor
謝榮鴻
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:謝榮鴻
共同指導教授:
口試委員:許瑞芬;陳玉華
中文關鍵字:高脂高膽固醇飲食;橄欖果萃取物;粒線體;抗氧化;降血脂
Abstract
高脂血症為體內脂質代謝異常之疾病,易演變成動脈粥狀硬化,為心血管疾病的危險因子。橄欖果中含有許多酚類化合物,其中hydroxytyrosol 為主要酚類化合物,具有抗氧化、改善粒線體功能及降低血中脂質之功效。本實驗藉由高脂高膽固醇飲食誘發倉鼠高脂血症,給予橄欖果萃取物後,能否改善脂質代謝異常、抗氧化酵素活性及胰島素抗性,並評估對粒線體功能可能影響。本實驗使用5週齡雄性倉鼠,適應兩週後依體重隨機分為六組,控制組 (C);高脂高膽固醇飲食組 (N);高脂高膽固醇飲食給予低劑量 (L)、中劑量組 (M)、高劑量橄欖果萃取物 (H) 及正控制組為高脂高膽固醇飲食給予N-Acetyl Cysteine (NAC) (P),介入八週後予以犧牲,取其血液、肝臟、脂肪及糞便進行分析。實驗八週後,發現給予橄欖果萃取物可降低血中脂質、血糖、胰島素及胰島素抗性、脂質過氧化終產物及改善粒線體質子滲漏的情形,也可改善高密度脂蛋白膽固醇、脂質氧化酵素活性、抗氧化酵素活性、粒線體功能及增加糞便中性固醇濃度。總言之,橄欖果萃取物可藉由降低因高脂高膽固醇飲食所誘發之氧化傷害,增加抗氧化酵素的活性,進而延緩粒線體功能受損,改善胰島素抗性,降低脂質過氧化,亦可增加體內膽固醇的排出,減少體內脂質的累積,達到改善血脂異常的作用。
URI
https://203.71.86.71/handle/123456789/56720

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