| 摘 要： | Objective:To investigate the effect of Shaoyao Gancao Decoction(芍药甘草汤,SGD) on the pharmacokinetics of intravenously administered paclitaxel in rats.Methods:Paclitaxel was intravenously administered to rats(3 mg/kg) with or without the concomitant administration of SGD(752 mg/kg,a single day or 14 consecutive days pretreatment).The paclitaxel in the serum was quantified using a simple and rapid ultra performance liquid chromatography(UPLC) method for the pharmacokinetic study.The pharmacokinetic parameters were calculated via a non-compartment model using the computer program DAS 2.0.Results:The pharmacokinetic parameters of paclitaxel were significantly altered in response to 14 consecutive days of pretreatment with SGD.The area under the curve(AUC_(0-t),from 4 820 ± 197 to 4 205 ± 186 ng·mL~(-1)·h~(-1))and AUC_(0-∞)(from 5 237 ±280 to 4 514 ± 210 ng·mL~(-1)·h~(-1)) significantly decreased in response to the 14-day pretreatment with SGD.The values of V_(dss)(L/kg) were 10.74 ±1.08 and 9.35 ±0.49,those of CL(L/kg) were0.67 ±0.03 and 0.57 ±0.03 and the t_(1/2)(h) values were 11.17 ±0.84 and 11.32 ±0.93,respectively,for the14-day SGD pretreatment and intravenous paclitaxel alone.The AUC_(0-t) and AUC_(0-∞) values decreased by13%and 14%(P0.01),respectively.The area under the curve decreased significantly(P0.01),and the total clearance increased by 1.2-fold(P0.01),after 14 consecutive days of pretreatment with SGD.A single-day pretreatment with SGD did not significantly affect the pharmacokinetic parameters of paclitaxel.Conclusions:SGD administration for 14 consecutive days increased the metabolism of paclitaxel,while a 1-day pretreatment had little effect.The results would contribute important information to the study on interaction between Chinese medicines and chemotherapy and also help to utilize SGD better in the adjunctive therapy of cancer patients.
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