Comparison of the curdione in brain of blood stasis pregnant rats and its offsprings with the normal group rats by UPLC-Q-TOF-MS

Curdione is a main active component of curcuma rhizomes (Ezhu), which shows an excellent antithrombotic activity. In this study, the concentration of Curdione in pregnant rats and their offspring brain was determined using ultra-performance liquid chromatography-quadrupole time-of-flight/mass spectrometry (UPLC-Q-TOF-MS) method. The water extraction then alcohol precipitation extract from Ezhu was administered through tail intravenous injection. The pharmacokinetic parameters were analyzed to compare the differences between the blood stasis group rats and normal group rats. Using Schisandrol A as an internal standard, samples were extracted using dichloromethane and isopropanol (90:10, v/v). Calibration plot was linear over the range of 0.5-200 mu gmL(-1) for Curdione in brain with the lower quantification limit being 0.5 mu g mL(-1). The recoveries of Curdione and IS from brain were more than 93.31% and 90.90% separately. The RSD for both intra- and inter-day precision were <6.49%, RE were -14.84%similar to-2.8%. The pharmacokinetic parameters C-max and AUC among the four kinds of rats had significant difference. The Curdione distributed in rat brain in model group is less than normal group. Ezhu medicine may show the therapeutic effect but not the reproductive toxicity on mother or unborn baby to cure the pregnant women under the adaptive symptoms.