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  4. 戊乙醯梔子?抑癌作用之研究---對肝致癌物作用之影響
 
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戊乙醯梔子?抑癌作用之研究---對肝致癌物作用之影響

  • Details
Project title
82學年度國家科學及技術委員會補助研究計畫
Acronym
專題研究計畫
Internal ID
NSC82-0412-B040-008
Principal Investigator
Wang, Chao-Chung  
Status
research project
Start Date
August 1, 1992
End Date
July 31, 1993
Organizations
School of Medicine  
Partner Organizations
National Science and Technology Council  
Project Web Site
https://www.grb.gov.tw/search/planDetail?id=3133
Keywords
戊乙醯梔子□
黃麴毒素
致癌作用
化學預防作用
Description
梔子在中國醫學上被用來抗發炎,利膽及保肝 之作用,本研究室發現梔子的主要成份之一 Geniposide,過去已證實此物質具有利膽,抗發炎等作 用,我們則進一步發現它在抑制AFB/sub 1/致癌作用 的活性,但從梔子中分離Geniposide較不穩定且產率低,我們已從一修飾乙醯化方法製得一結晶並已 鑑定為Penta-acetyl Geniposide,此物質更為穩定,產率 更高,初步的實驗已顯示它已有較高的活性,因此 本計畫目的擬進一步完成它在抗癌活性方面的研 究,並同時與Geniposide作比較.本年度所要完成的項 目為:(I)Penta-acetyl Geniposide對AFB/sub 1/對鼠肝急性損傷之 保護作用,以AST, ALT及□-GT為肝功能指標,並同時 比較有關AFB/sub 1/去毒的物質及酵素,如GSH, GSH S- transferase, Glycinylcysteine Synthetase等之活性.(□)Penta-acetyl Geniposide對AFB/sub 1/致鼠癌化之作用, 利用我們已發表過的模式,觀察Penta-acetyl Geniposide 抑制AFB/sub 1/致鼠肝癌化的情形,以病理切片,r-GT foci及血清生化值分析.(□)Penta-acetyl Geniposide抑制AFB/sub 1/可能機制之探 討,包括:ぇ在Hepatocyte中對AFB/sub 1/ Biotransformation的影響.え對於AFB/sub 1/-DNA結合之作用的影響.ぉ對AFB/sub 1/-8,9-epoxide形成的影響.
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