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  5. 探討香砂六君子湯透過調控CYP450表現對汰癌勝藥物動力學之影響
 
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探討香砂六君子湯透過調控CYP450表現對汰癌勝藥物動力學之影響

Other Title
The influence of Xiang Sha Liu Jun Zi Tang on pharmacokinetic properties of paclitaxel through cytochrome P450 regulation
Type
thesis
Date Issued
2022-07-07
Author(s)
ALINAFE MAGRET KAPELEMERA
Advisor
李佳蓉;王靜瓊
Subjects
系所名稱:中草藥臨床藥物研發博士學位學程
Publisher
中草藥臨床藥物研發博士學位學程
Description
口試委員:林麗純 Lin, Lie-Chwen;吳育澤 Wu, Yu-Tse;謝政穎 Hsieh Cheng-ying;李佳蓉 Chia-Jung Lee;王靜瓊 Ching-Chung Wang
網際網路,開放日期為2022-07-20
Abstract
Paclitaxel是一種常用於治療乳癌的化療藥物,主要利用CYP-450酵素進行代謝,在治療過程中,伴隨有神經疼痛、心毒性等嚴重的副作用。國人就醫習慣,常併中草藥以降低或是緩解化療藥物造成的副作用,利用搜尋健保資料庫,香砂六君子湯(XSLJZT)是最常與Paclitaxel併用的處方。本研究利用Sprague Dawley大鼠,進行不同時間預先投於香砂六君子湯的策略,藉由分析藥物動力學參數,與CYP-450酵素的表現,評估香砂六均子湯與Paclitaxel併用,是否會對其產生影響,並利用體外酵素實驗與細胞實驗,評估其相關方劑之可能作用。本研究結果顯示,香砂六君子湯分別於Paclitaxel給藥前2小時、 3、5 和 7 天預先給藥,在預給藥 3、5和7天組別,Paclitaxel的濃度與時間曲線下面積 (AUC) 分別增加了2、3和4倍。而在Paclitaxel給藥前2小時預給藥的組別中未觀察到AUC有顯著變化。在大鼠肝臟組織中發現,香砂六君子湯會抑制 CYP3A1/2 和 CYP3A4 酶的表現。此外HepG2細胞結果顯示,香砂六君子湯及其相關方劑,皆會抑制CYP3A1/2和CYP3A酵素表現。最後利用人類肝臟微粒體萃取物之體外酵素實驗,確定香砂六君子湯可以競爭性且可逆的抑制CYP-450酵素活性。實驗結論,香砂六君子湯可能透過抑制代謝酵素,改變Paclitaxel的血中濃度,未來在臨床的應用時,可以藉由調整Paclitaxel的劑量,降低其副作用,對於臨床具有很重要的價值。
URI
https://handle.ncl.edu.tw/11296/mfkz38
https://203.71.86.71/handle/123456789/10917

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