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重庆医科大学药学院药物分析教研室、重庆市生物化学和分子药理重点实验室,重庆,400016
纸质出版日期:2014,
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唐直婕, 周定利, 柯玲玲, 等. 水飞蓟宾生物黏附微球的生物利用度[J]. 重庆医科大学学报, 2014,38(7):1020-1023.
Tang Zhijie, Zhou Dingli, Ke Lingling, et al. Bioavailability of bioadhesive microspheres of silybin[J]. Journal of Chongqing Medical University, 2014,38(7):1020-1023.
目的:建立兔血浆中水飞蓟宾生物黏附微球浓度的反相高效液相色谱测定方法,研究水飞蓟宾生物黏附微球的代谢动力学及相对生物利用度。方法:色谱柱,Agilent Zorbax C18(250 mm × 4.6 mm,5 μm);流动相A,20 mmol/L KH2PO4缓冲溶液(pH 3.0);流动相B,甲醇(A∶B=55∶45,V/V)。12只健康大白兔进行随机交叉实验,给药剂量为20 mg/kg。结果:生物黏附微球和混悬液的主要药动学参数:峰浓度Cmax分别为(905.94±230.16) ng/ml和(321.32±86.65) ng/ml;达峰时间T(peak)分别为(4.70±1.02) h和(1.66±1.00) h;半衰期t1/2分别为(4.07±0.12) h和(1.64±0.09) h;药物曲线下面积AUC0-24分别为(11 841.35±579.58) ng·h/ml和(1 537.34±156.43) ng·h/ml。由2种制剂的AUC0-24计算,生物黏附微球的相对生物利用度为(770.2±370.5)%。结论:水飞蓟宾生物黏附微球的生物利用度是速释制剂混悬液的7.7倍,明显提高了水飞蓟宾在体内的吸收。
Objective:To establish reversed phase-high performance liquid chromatography(RP-HPLC) for the determination of sily-bin in rabbit plasma and to provide a method for studying pharmacokinetics and relative bioavailability of bioadhesive microspheres of silybin. Methods:Separation was achieved using an Agilent Zorbax C18 column(250 mm×4.6 mm).The mobile phase were:A,20 mmol/L KH2PO4 buffer,pH=3.0;B,methanol(A∶B=55∶45,V/V). A randomized cross-over design was performed on 12 healthy rabbits. Results:Main pharmacokinetic parameters of bioadhesive microspheres and suspensions:Cmax(905.94±230.16) ng/ml and (321.32±86.65) ng/ml;T(peak)(4.70±1.02) h and (1.66±1.00) h;t1/2(4.07±0.12) h and (1.64±0.09) h;AUC0-24(11 841.35±579.58)(ng·h)/ml and (1 537.34±156.43) (ng·h)/ml,respectively. Relative bioavailability of the bioadhesive microspheres to suspensions was (770.2±370.5)%. Conclusion:Relative bioavailability of bioadhesive microspheres is 770% to suspensions of silybin and bioadhesive micro-spheres promote the absorption of silybin.
水飞蓟宾反相高效液相色谱法相对生物利用度
silybinreversed phase-high performance liquid chromatographyrelative bioavailability
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