目的:探讨醋柴胡不同提取部位治疗肝郁证的效果及可能机制。方法:SD大鼠随机分出空白组,其余夹尾制备肝郁模型。造模成功后给予醋柴胡不同部位提取液治疗3d,测定血清谷丙转氨酶(ALT)、谷草转氨酶(AST)、总胆酸(TBA),肝脏组织的Na+-K+AT...目的:探讨醋柴胡不同提取部位治疗肝郁证的效果及可能机制。方法:SD大鼠随机分出空白组,其余夹尾制备肝郁模型。造模成功后给予醋柴胡不同部位提取液治疗3d,测定血清谷丙转氨酶(ALT)、谷草转氨酶(AST)、总胆酸(TBA),肝脏组织的Na+-K+ATP酶、Ca2+-Mg2+ATP酶活性,RT-PCR法检测P-gp m RNA含量。结果:造模后,与空白组比较,模型组各肝功检测指标均升高(P<0.05,P<0.01),而醋柴胡多个部位均能降低肝郁模型大鼠的ALT、AST和TBA水平;增强ATP酶活力,其中水提液部位(WE)、正丁醇部位(BE)的Na+-K+、Ca2+-Mg2+ATP酶活力明显提高(P<0.05);RT-PCR实验显示醋柴胡各部位均能降低P-gp基因表达(P<0.05,P<0.01)。结论:醋柴胡各部位能够改善肝郁证导致的肝损伤,其机制与Na+-K+ATP酶、Ca2+-Mg2+ATP酶、P-gp调控有关。展开更多
The micelles behavior of amphiphilic block copolymer P（Styrene\|b\|acrylic acid）, in aqueous solvent was studied by dynamic light scattering and TEM techniques. The diameters of micelle decreased and then increased ...The micelles behavior of amphiphilic block copolymer P（Styrene\|b\|acrylic acid）, in aqueous solvent was studied by dynamic light scattering and TEM techniques. The diameters of micelle decreased and then increased with the decrease of the pH of the solution, and the similar phenomenon was also detected with the increase of the concentration of the calcium ion. Without added acid, the micelles were small spheres of low polydispersity with an average diameter 48 nm. When the value of pH was less than 2, the micelles were unstable. It was found that the Ca\+\{2+\} was linked with the carboxyl in the same micelle when the concentration of the CaCl\-2 was less than 0\^2 mg/mL. The diameter of micelle was smaller than the one without Ca\+\{2+\}. The Ca\+\{2+\} was linked with the carboxyl between the different micelles when the concentration of the CaCl\-2 was more than 0\^5 mg/mL and the micelle was unstable. The diameters of micelles（from 37 nm to 100 nm） can be controlled by adding an appropriate concentration of CaCl\-2 between 0\^2\0\^5 mg/mL.展开更多
文摘目的:探讨醋柴胡不同提取部位治疗肝郁证的效果及可能机制。方法:SD大鼠随机分出空白组,其余夹尾制备肝郁模型。造模成功后给予醋柴胡不同部位提取液治疗3d,测定血清谷丙转氨酶(ALT)、谷草转氨酶(AST)、总胆酸(TBA),肝脏组织的Na+-K+ATP酶、Ca2+-Mg2+ATP酶活性,RT-PCR法检测P-gp m RNA含量。结果:造模后,与空白组比较,模型组各肝功检测指标均升高(P<0.05,P<0.01),而醋柴胡多个部位均能降低肝郁模型大鼠的ALT、AST和TBA水平;增强ATP酶活力,其中水提液部位(WE)、正丁醇部位(BE)的Na+-K+、Ca2+-Mg2+ATP酶活力明显提高(P<0.05);RT-PCR实验显示醋柴胡各部位均能降低P-gp基因表达(P<0.05,P<0.01)。结论:醋柴胡各部位能够改善肝郁证导致的肝损伤,其机制与Na+-K+ATP酶、Ca2+-Mg2+ATP酶、P-gp调控有关。
文摘The micelles behavior of amphiphilic block copolymer P（Styrene\|b\|acrylic acid）, in aqueous solvent was studied by dynamic light scattering and TEM techniques. The diameters of micelle decreased and then increased with the decrease of the pH of the solution, and the similar phenomenon was also detected with the increase of the concentration of the calcium ion. Without added acid, the micelles were small spheres of low polydispersity with an average diameter 48 nm. When the value of pH was less than 2, the micelles were unstable. It was found that the Ca\+\{2+\} was linked with the carboxyl in the same micelle when the concentration of the CaCl\-2 was less than 0\^2 mg/mL. The diameter of micelle was smaller than the one without Ca\+\{2+\}. The Ca\+\{2+\} was linked with the carboxyl between the different micelles when the concentration of the CaCl\-2 was more than 0\^5 mg/mL and the micelle was unstable. The diameters of micelles（from 37 nm to 100 nm） can be controlled by adding an appropriate concentration of CaCl\-2 between 0\^2\0\^5 mg/mL.
