台灣常用治肝病中藥方劑對肝硬化的實驗療效研究
黃怡超
國立陽明大
在台灣有許多因慢性B型肝炎而致肝硬化及肝癌之病人,對台灣民眾之健康與死亡率影響甚鉅。肝硬化是”進行性肝纖維化過程”所致的,肝纖維化是一個動態的過程,在某些階段為可逆的。因此,目前醫學界仍致力於尋找阻延肝纖維化之藥物。在台灣,中藥方劑如加味逍遙散,龍膽瀉肝湯,小柴胡湯等為常用於治肝病有關之證候,且在衛生署許可證張數及藥廠、醫院銷售量兩項指標皆名列前茅,唯其在西醫療效評估,或保肝作用機轉上,在重要醫學期刊文獻之數據資料仍甚缺乏。本研究即要探討上列三種中藥方劑在肝硬化動物之療效及可能副作用,以作為下一步臨床療效評估之參考依據。
本計畫中,我們擬以大白鼠接受(1)膽管結紮,或(2)1% dimethylnitrosamine兩種方式引致肝硬化,再分別給予一低劑量與一高劑量之下列方劑之一:加味逍遙散,龍膽瀉肝湯,小柴胡湯,以建立量效關係。草藥以胃管連續餵食一週或四週,療效測量指標包括:(1)血流動力學(肝門靜脈壓,週身血壓與血管阻力,臟腑血流等),(2)血清生化檢查,(3)肝組織切片衡量肝纖維化程度,(4)肝組織細胞耗氧速率,脂質過氧化物含量與自由基清除酵素活性,(5)以RT-PCR衡量肝組織TGF-b1與pro-collagen亞型之表現。
此研究將能對中草藥抗肝纖維化做療效評估,並對其血流動力效應,可能之肝腎副作用,與作用機轉有所瞭解,以作為下一步臨床試驗之參考。
關鍵字:肝硬化、抗肝纖維化藥物、中藥方劑
Therapeutic Study of Chinese Herbal Combinations on Cirrhotic Rats
Huang Yi-Tsau
Institute of Traditional Medicine, School of Medicine, National Yang-Ming University
Many patients with chronic active hepatitis in Taiwan are prone to the development of cirrhosis and/or hepatoma, which together contribute to high morbidity and mortality in afflicted patients. Cirrhosis is pathogenetically due to “liver fibrogenesis”, which is a dynamic, complex, and progressive process. At some stages, it is reversible and potentially amenable to drug treatment. Progressive hepatic fibrosis can lead to cirrhosis with portal hypertension and hyperdynamic circulation. Current therapeutic research on cirrhosis is directed to lessening fibrosis or correcting cirrhotic hemodynamic consequences, especially portal hypertension. Many hepato-protective drugs or herbs exert their effects through inhibiting signaling cascades of hepatic transforming growth factor-b1 (TGF-b1), lipid peroxidation or reactive oxygen species. In this study, we plan to investigate the therapeutic (anti-fibrotic and hemodynamic) effects of three most commonly prescribed Chinese herbal combinations
關鍵字:Liver Cirrhosis、Anti-fibrosis agent、Chinese Herbs