Effects of 3 genosides on bio-thermodynamic expression of splenic lymphocyte in mice / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To establish a new method for screening active ingredients of Chinese herbs by determining different bio-thermodynamic effects of 3 genosides on splenic lymphocyte of mice.</p><p><b>METHODS</b>Using a thermal bioactivity monitoring system, the maximum heat output (mHO), average metabolic heat (MH) and constant of decrease rate (DR) of lymphocyte were determined based on the growth metabolic power-time curve, and the outcomes were verified by MIT.</p><p><b>RESULTS</b>The mHO and MH increased and the DR decreased after lymphocytes being exposed to the 3 genosides in different concentrations, arranged upon their potency as genoside Rg3 > genoside Rg2 > genoside Rg1 (merely insignificant effect). MTT showed the same results.</p><p><b>CONCLUSION</b>Heat activity monitoring system could precisely display the different bio-thermal dynamic effects of 3 genosides on splenic lymphocyte.</p>

Methodological study on quality evaluation of rhubarb based on purgative bioassay / 中国中药杂志

<p><b>OBJECTIVE</b>To establish a method suitable to determine the purgative biopotency of rhubarb and construct a new quality evaluation pattern of rhubarb.</p><p><b>METHOD</b>A series of factors such as observation index (mass of feces in 10 hours), animal strain (ICR mice), sex (male) and the dose of diphenoxylate complex (50 mg x kg(-1)) was investigated and fixed. The purgative biopotency as well as anthraquinone determination was used to evaluate the quality of different rhubarb samples.</p><p><b>RESULT</b>There wasn't a good linear relationship between the purgative biopotency and content of anthraquinone. The quality difference of rhubarb samples could be well characterized by combination of purgative biopotency determination and anthraquinone determination.</p><p><b>CONCLUSION</b>The purgative biopotency determination can be used in quality control and evaluation of rhubarb.</p>