Objective: To investigate the hepatoprotective effect of Xijiao Dihuang Decoction(犀角地黄汤,XJDHD) on lipopolysaccharide(LPS)-and tumor necrosis factor alpha(TNF-α)-induced acute liver failure(ALF)as well as the und...Objective: To investigate the hepatoprotective effect of Xijiao Dihuang Decoction(犀角地黄汤,XJDHD) on lipopolysaccharide(LPS)-and tumor necrosis factor alpha(TNF-α)-induced acute liver failure(ALF)as well as the underlying mechanism of action, and to clarify the key herbs and components of XJDHD. Methods:LPS/D-galactosamine(D-GalN) or TNF-α/D-GalN were intraperitoneally injected into C57BL/6J mice to induce ALF. Simultaneously, XJDHD or its individual herbs and components were orally administered. Survival rates, transaminase levels in serum, and hepatic histology were examined to evaluate the effects of XJDHD.The terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling(TUNEL) assay and real-time polymerase chain reaction were additionally performed to expound the mechanism underlying the anti-apoptotic activity of XJDHD. Results: Oral administration of XJDHD protected mice from lethal liver failure induced by LPS and TNF-α, with notable amelioration of liver injury in histology and a significant decrease in transaminase levels in serum. XJDHD signi?cantly inhibited apoptosis of hepatocytes and enhanced expression of the antiapoptosis genes, c-Flip, Iap1, Gadd45 b and A20(all P<0.05). In addition, Rehmannia glutinosa Libosch. was identi?ed as the key herb of XJDHD and galactose as the effective component of Rehmannia glutinosa Libosch.that protects against ALF. Conclusions: XJDHD inhibits TNF-α-induced apoptosis of hepatocytes by promoting the expression of nuclear factor κB-regulated anti-apoptotic genes. Rehmannia glutinosa Libosch. may be the most effective herb of XJDHD and galactose is an active component in this protection.展开更多
目的观察中药生地黄免煎颗粒对神经生长抑制因子Nogo-A蛋白表达的影响。方法将实验大鼠分为用药组、模型组和假手术组,采用生地黄免煎颗粒溶液灌胃的方式作用于MCAO模型大鼠,分别在造模后第3、7、14 d 3个时间点采用Western Blot方法观...目的观察中药生地黄免煎颗粒对神经生长抑制因子Nogo-A蛋白表达的影响。方法将实验大鼠分为用药组、模型组和假手术组,采用生地黄免煎颗粒溶液灌胃的方式作用于MCAO模型大鼠,分别在造模后第3、7、14 d 3个时间点采用Western Blot方法观察Nogo-A蛋白的表达。结果经MCAO造模造成脑缺血损伤之后,Nogo-A蛋白的表达出现升高趋势,且随时间呈现先上升后下降的趋势,在第7日表达最为活跃;MCAO造模后经生地黄免煎颗粒溶液灌胃干预以后,Nogo-A蛋白的表达水平在3个时间点上均较模型组降低,且呈现先升高后又缓慢恢复的趋势;相对于模型组,在造模后第14日,生地黄对Nogo-A蛋白的表达有明显的下调作用。结论生地黄免煎颗粒能够在一定程度上下调MCAO造模后引起的Nogo-A蛋白表达升高,有利于中枢神经缺血后的神经再生。展开更多
基金Supported by the National Natural Science Foundation of China(No.81072766)Beijing Natural Science Foundation(No.7112066)215 Program from Beijing Public Health Bureau(No.2013-2-11)
文摘Objective: To investigate the hepatoprotective effect of Xijiao Dihuang Decoction(犀角地黄汤,XJDHD) on lipopolysaccharide(LPS)-and tumor necrosis factor alpha(TNF-α)-induced acute liver failure(ALF)as well as the underlying mechanism of action, and to clarify the key herbs and components of XJDHD. Methods:LPS/D-galactosamine(D-GalN) or TNF-α/D-GalN were intraperitoneally injected into C57BL/6J mice to induce ALF. Simultaneously, XJDHD or its individual herbs and components were orally administered. Survival rates, transaminase levels in serum, and hepatic histology were examined to evaluate the effects of XJDHD.The terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling(TUNEL) assay and real-time polymerase chain reaction were additionally performed to expound the mechanism underlying the anti-apoptotic activity of XJDHD. Results: Oral administration of XJDHD protected mice from lethal liver failure induced by LPS and TNF-α, with notable amelioration of liver injury in histology and a significant decrease in transaminase levels in serum. XJDHD signi?cantly inhibited apoptosis of hepatocytes and enhanced expression of the antiapoptosis genes, c-Flip, Iap1, Gadd45 b and A20(all P<0.05). In addition, Rehmannia glutinosa Libosch. was identi?ed as the key herb of XJDHD and galactose as the effective component of Rehmannia glutinosa Libosch.that protects against ALF. Conclusions: XJDHD inhibits TNF-α-induced apoptosis of hepatocytes by promoting the expression of nuclear factor κB-regulated anti-apoptotic genes. Rehmannia glutinosa Libosch. may be the most effective herb of XJDHD and galactose is an active component in this protection.
文摘目的观察中药生地黄免煎颗粒对神经生长抑制因子Nogo-A蛋白表达的影响。方法将实验大鼠分为用药组、模型组和假手术组,采用生地黄免煎颗粒溶液灌胃的方式作用于MCAO模型大鼠,分别在造模后第3、7、14 d 3个时间点采用Western Blot方法观察Nogo-A蛋白的表达。结果经MCAO造模造成脑缺血损伤之后,Nogo-A蛋白的表达出现升高趋势,且随时间呈现先上升后下降的趋势,在第7日表达最为活跃;MCAO造模后经生地黄免煎颗粒溶液灌胃干预以后,Nogo-A蛋白的表达水平在3个时间点上均较模型组降低,且呈现先升高后又缓慢恢复的趋势;相对于模型组,在造模后第14日,生地黄对Nogo-A蛋白的表达有明显的下调作用。结论生地黄免煎颗粒能够在一定程度上下调MCAO造模后引起的Nogo-A蛋白表达升高,有利于中枢神经缺血后的神经再生。
