Repository logo
  • English
  • 中文
  • Log In
    New user? Click here to register.Have you forgotten your password?
Repository logo
    Communities & Collections
    Research Outputs
    Fundings & Projects
    People
    Organizations
    Statistics
  • English
  • 中文
  • Log In
    New user? Click here to register.Have you forgotten your password?
  1. Home
  2. .TMU Publications / 北醫出版品(教師升等著作 / 教學實踐 / 學位論文)
  3. .博碩士學位論文
  4. 101學年度
  5. 台灣產一枝香、福木和柃木之抗發炎、抗癌與抗氧化成分之活性及其機轉探討
 
  • Details
Options

台灣產一枝香、福木和柃木之抗發炎、抗癌與抗氧化成分之活性及其機轉探討

Other Title
Studies on the Bioactivities and Mechanisms of Anti-inflammatory, Antitumor and Antioxidant Constituents from Taiwanese Vernonia cinerea, Garcinia subelliptica, and Eurya japonica
Type
thesis
Date Issued
2013-06-27
Author(s)
郭楊麗明
Advisor
何秀娥
Subjects
系所名稱:藥學系(碩博士班)
Description
學位別:博士
語文別:中文
指導教授:何秀娥
共同指導教授:
口試委員:吳永昌;沈雅敬;蔡維人;侯文琪;王靜瓊;李宗徽
中文關鍵字:抗發炎, 抗癌, 抗氧化, 一枝香, 福木, 柃木
Abstract
本論文乃研究台灣產三種植物 (一枝香、福木和柃木) 所獲致的活性成分包括一枝香的倍半萜類 (hirsutinolide-type sesquiterpenoids)、福木的蒽酮類 (xanthochymol) 以及柃木的木質素 (lignans) 和黃酮類 (flavonoids)化合物為主,檢測其抗發炎、抗癌和抗氧化活性,並探討其藥理機轉,以及應用電腦模擬實驗結果去解釋化學結構在藥理作用上的機轉。
Hirsutinolides系列化合物,經生物活性測試後,發現其抗發炎作用皆有一定的抑制效果,但並無明顯的抗癌作用。進一步利用電腦模擬方式探討化合物與活性的作用關係;以固定某一結合位點於NF-?羠的 A chain上第38號位置上的Cysteine (Cys38),搜尋到一枝香其中一個hirsutinolide 化合物成分:8α-tigloyloxyhirsutinolide-13-O-acetate 與NF-?羠上胺基酸A chain上的5個胺基酸具有良好的鍵結關係。這可說明為何8α-tigloyloxyhirsutinolide-13-O-acetate可以做為抗發炎的最佳藥物,其結果亦有益於化學結構與生物活性關係 (SAR) 的闡釋。
福木所含xanthochymol可抑制多種人類癌細胞 (ED50 約 4 ~ 5 ?嵱),我們除了證實其可抑制細胞週期的G1期外,同時訊息傳遞蛋白相對於G1期的cyclin D1也被抑制;這些結果顯示xanthochymol的抗癌作用並非作用於DNA Topoisomerase I 和II上。在動物實驗亦顯示xanthochymol 可抑制腫瘤細胞的生長。
至於台灣產的柃木,我們除了解析其中獲致的四種新的木質素化學結構外,並檢測lignans和部分的flavonoids抗氧化活性,發現其抗氧化效果頗佳,功效近於維生素E的抗氧化能力,且SAR結論顯示木質素苯環上的氫氧基與甲氧基鄰位時,可呈現較佳的抗氧化活性。
URI
https://203.71.86.71/handle/123456789/14040

Copyright Notice

● The digital content on this platform is part of the Taipei Medical University Institutional Repository, featuring various academic works and outputs from the institution. It offers free access to academic research and public education for non-commercial use.

● Please use the content appropriately and within legal boundaries to respect copyright owners' rights. For commercial use, please obtain prior authorization from the copyright owner. Users must not use TMUIR for any illegal purposes.

● By utilising the platform, users are deemed to have fully accepted and understood all the regulations set out in this statement, relevant laws of the Republic of China, all international internet regulations, and usage conventions.

● TMUIR is committed to protecting the interests of copyright owners. If you believe that any material on this website infringes copyright, please contact our staff at libirtmu@gmail.com, and we will remove the work from the repository.

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Cookie settings
  • Privacy policy
  • End User Agreement
  • Send Feedback