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  5. 自組裝型微胞體與自乳化型奈米乳液提升 Sirolimus 與 Everolimus 之口服生體可用率
 
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自組裝型微胞體與自乳化型奈米乳液提升 Sirolimus 與 Everolimus 之口服生體可用率

Other Title
Oral Bioavailability Enhancement of Sirolimus and Everolimus by Self-Assembling Micelles and Self-Emulsifying Nanoemulsions
Type
thesis
Date Issued
2018-07-12
Author(s)
洪如盈
Advisor
何元順
許明照
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:何元順
共同指導教授:許明照
口試委員:楊沂淵;莊國祥;張榮善
中文關鍵字:Sirolimus;Everolimus;自組裝型微胞體;自乳化型奈米乳液;口服生體可用率
英文關鍵字:Sirolimus;Everolimus;Self-Assembling Micelles;Self-Emulsifying nanoemulsions;Oral Bioavailability
Abstract
水難溶性藥物包括 sirolimus 與 everolimus 等口服投與一般所遭遇的最大難題是難以達到足夠的口服生體可用率。水難溶性藥物的低水溶解度是導致生體可用率降低的最主要原因,因此研發增強藥物的水溶解度之製劑技術勢必要的。
本實驗分別使用自組裝型卵磷質與兩性高分子聚合物混合奈米微胞體之技術來製備 sirolimus 的奈米微胞體載體劑型,於口服後能自組裝的形成奈米微胞體載體來攜載 sirolimus,及固體分散體將藥物高度均勻分散在適宜的載體物質中所形成的一種固體物質,本實驗使用溶劑法,將藥物和載體共溶於有機溶劑中揮發溶劑,使藥物與載體材料同時析出,經乾燥即得到藥物與載體材料混合成的固體分散體。而奈米乳液是由適當比例的油相、界面活性劑與輔助界面活性劑組成的膠體分散體,於口服後形成奈米乳液載體來攜載 everolimus,屆時均達到提高其水溶解度,因而增強口服生體可用率之目的。利用自組裝型卵磷質與兩性高分子聚合物混合奈米微胞體之技術,最佳處方比例為活性成分、卵磷脂與 D-α-Tocopheryl polyethylene glycol 1000 succinate (TPGS) 分別為 1:3:7 與 1:5:5,粒徑大小分別為 246.80 ± 4.75 (PI=1.13 ± 0.04) 與 314.10 ± 6.91 (PI=0.70 ± 0.10) nm,藥物負載率分別為 24.31 與 17.66%,而藥物包覆率皆達到88%。固體分散技術最佳處方比例為活性成分、卵磷脂與Polyvinylpyrrolidone K-30 (PVP K-30) 為 1:2:10。自乳化型奈米乳液所得最佳處方比例分別為0.1g奈米乳液中含5mg的活性成分,粒徑大小170.8 ± 2.21 (PI=0.758 ± 0.04) nm。由本研究結果顯示自組裝型微胞體、固體分散體與自乳化型奈米乳液系統皆可有
效的作為難溶性藥物載體,增進其溶離速率與溶離量,因此相對有效的提高其生體可用率。
URI
https://203.71.86.71/handle/123456789/58267

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