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  5. 前處理牛樟芝之乙醇萃取物能加強Amphotericin B細胞毒性之反應研究
 
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前處理牛樟芝之乙醇萃取物能加強Amphotericin B細胞毒性之反應研究

Other Title
Pretreatment with an ethanolic extract of
Taiwanofungus camphoratus (Antrodia camphorata)
enhances the cytotoxicity of Amphotericin B
Type
thesis
Date Issued
2012-06-14
Author(s)
陳玲儀
Advisor
蘇慶華
Subjects
系所名稱:醫學人文研究所
Publisher
醫學人文研究所
Description
學位別:博士
語文別:中文
指導教授:蘇慶華
共同指導教授:
口試委員:許瑞祥;呂思潔;陳建志;蘇正堯
中文關鍵字:樟芝;細胞凋亡;兩性黴素;細胞週期;抗黴菌藥
Abstract
牛樟芝是一種臺灣特有的藥用真菌,具有數種包括抗癌功效在內的藥
理功用。本研究針對前處理牛樟芝之乙醇萃取物,再施以Amphotericin
B (一種抗真菌藥物),來研究其特殊之抗癌機轉。研究發現牛樟芝之
乙醇萃取物與Amphotericin B均能引發劑量依存性之細胞毒性,前處
理牛樟芝之乙醇萃取物能加強Amphotericin B之細胞毒性。此外,牛
樟芝之乙醇萃取物與Amphotericin B引發顯著之細胞凋亡,引發磷酯
絲胺酸外翻與粒線體膜電位之喪失。分析細胞週期的結果顯示牛樟芝
之乙醇萃取物與Amphotericin B造成細胞停留在G2/M之位置,並在48
小時後引發顯著的細胞凋亡,這些反應皆較單獨使用Amphotericin B
為大。甚者,牛樟芝之乙醇萃取物與Amphotericin B能增加p21Cip1/Waf1
與促凋亡蛋白Bax,並減少抗凋亡蛋白Bcl-2之表現。在動物實驗中,
牛樟芝之乙醇萃取物與Amphotericin B之處理能有效抑制HT29異種
植腫瘤之生長。總而言之,本研究結果顯示牛樟芝之乙醇萃取物與
Amphotericin B共同處理能有效引發細胞凋亡並抑制腫瘤生長,未來
牛樟芝之乙醇萃取物與Amphotericin B可能作為輔助醫療的新選擇與
新方向。
URI
https://203.71.86.71/handle/123456789/11088

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