Bioavailability of bioadhesive microspheres of silybin
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Bioavailability of bioadhesive microspheres of silybin
Journal of Chongqing Medical UniversityVol. 38, Issue 7, Pages: 1020-1023(2014)
作者机构:
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
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Published:2014,
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Tang Zhijie, Zhou Dingli, Ke Lingling, et al. Bioavailability of bioadhesive microspheres of silybin. [J]. Journal of Chongqing Medical University 38(7):1020-1023(2014)
DOI:
Tang Zhijie, Zhou Dingli, Ke Lingling, et al. Bioavailability of bioadhesive microspheres of silybin. [J]. Journal of Chongqing Medical University 38(7):1020-1023(2014)DOI:
Bioavailability of bioadhesive microspheres of silybin
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.