[Objective] This study aimed to investigate the trace elements in Rehman- nia glutinosa Libosch. by using principal component analysis and clustering analysis. [Method] Principal component analysis and clustering anal...[Objective] This study aimed to investigate the trace elements in Rehman- nia glutinosa Libosch. by using principal component analysis and clustering analysis. [Method] Principal component analysis and clustering analysis of R. glutinosa medicinal materials from different sources were conducted with contents of six trace elements as indices. [Result] The principal component analysis could comprehen- sively evaluate the quality of R. glutinosa samples with objective results which was consistent with the results of clustering analysis. [Conclusion] Principal component analysis and clustering analysis methods can be used for the quality evaluation of Chinese medicinal materials with multiple indices.展开更多
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
基金Supported by Fund of Sichuan Provincial Administration of traditional Chinese Medicine(2008-12)~~
文摘[Objective] This study aimed to investigate the trace elements in Rehman- nia glutinosa Libosch. by using principal component analysis and clustering analysis. [Method] Principal component analysis and clustering analysis of R. glutinosa medicinal materials from different sources were conducted with contents of six trace elements as indices. [Result] The principal component analysis could comprehen- sively evaluate the quality of R. glutinosa samples with objective results which was consistent with the results of clustering analysis. [Conclusion] Principal component analysis and clustering analysis methods can be used for the quality evaluation of Chinese medicinal materials with multiple indices.
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.
