1,3-二苯-1,3-丙二酮在小鼠体内的组织分布

目的：研究1,3-二苯-1,3-丙二酮（1,3-diphenyl-1,3-propanedione，DPPD）在小鼠体内各组织中的分布特征。方法：雄性ICR小鼠灌胃给予DPPD后，于不同时间点采集小鼠肝、心、脾、肺、肾及肌组织，以高效液相色谱法（high performance liquid chromatography, HPLC）测定各组织中DPPD的浓度。Thermo Kinetica 4.4.1软件计算药物代谢动力学参数。结果：灌胃给予小鼠DPPD后，DPPD浓度在肝、肾组织中较高（肝AUC_tot=41.92 μg·h/g，肾AUC_tot=40.40 μg·h/g），给药后肝、肺组织内的药物浓度迅速达到最大值，T_max分别为0.32 h和0.33 h，而肌组织的药物浓度则在3.85 h时才达到最大值。DPPD在肝内浓度的最大值C_max=31.20 μg/mL，该浓度值亦为所有受检组织中的最高浓度。给药后24 h仍能在各组织中检测到较低浓度的DPPD。结论：DPPD在各组织中分布不均，肝、肾和肌组织中药物分布量较大，而肺、脾组织中分布较少，且各组织中药物浓度的动态变化规律也各不相同。

Tissue distribution of 1,3-diphenyl-1,3-propanedione in mice

Objective:To investigate tissue distribution characteristics of 1,3-diphenyl-1,3-propanedione(DPPD) in mice.Methods: Male ICR mice were dosed with DPPD 500 mg/kg via oral gavage,and the tissue samples of the heart,liver,spleen,lungs,kidneys and muscle of each mouse were collected as scheduled.At each time point,the concentrations of DPPD in the mouse tissues were measured by high performance liquid chromatography(HPLC) method.The main pharmacokinetic parameters were calculated by Thermo Kinetica 4.4.1 software.Results: DPPD was absorbed rapidly after oral administration.The concentrations of DPPD in the liver and in the kidney were higher,respectively(liver:AUCtot=41.92 μg·h/g,kidney: AUCtot=40.40 μg·h/g).The drug concentrations showed a rapid distribution in the liver and lungs(Tmax=0.32 h and 0.33 h respectively) after oral administration,but in the muscle the maximum was 3.85 h.The maximum concentration of DPPD was in the liver(Cmax=31.20 μg/g),which was also the highest tissue concentration of all the subjects.DPPD could be detected at the low concentration within 24 h in all the tissues involved.Conclusion: DPPD distributed unevenly in various tissues.In the liver,kidney and muscle,the amount of the drug concentration was larger,and was lower in the lungs and spleen.