摘要
目的:建立血浆中LS-177的分析方法,测定LS-177与大鼠、比格犬和人的血浆蛋白结合率。方法:采用平衡透析法模拟LS-177在体内与血浆蛋白的结合过程,采用UPLC-MS/MS方法对透析外液和内液中LS-177的含量进行测定,计算LS-177与大鼠、比格犬和人的血浆蛋白结合率。结果:LS-177低、中、高(25,50和100 ng·m L-1) 3个浓度的大鼠血浆蛋白结合率分别是(81. 2±5. 2)%,(77. 2±6. 2)%,(79. 8±5. 2)%;比格犬血浆蛋白结合率分别是(84. 2±2. 7)%,(82. 5±3. 1)%,(84. 1±3. 9)%;人血浆蛋白结合率分别是(84. 0±3. 4)%,(81. 7±4. 0)%,(80. 5±3. 4)%。结论:建立的LS-177蛋白结合率测定方法简便、稳定、可靠,LS-177血浆蛋白结合率不具有明显的浓度依赖性和种属差异。
Objective: To establisha method for the analysis of LS-177 in plasma and determination the plasma protein binding rate of LS-177 and different species plasma protein( Rat,Beagle and human). Methods:Equilibrium dialysis method was utilized to imitate the binding process between LS-177 and different species plasma protein. The concentration of LS-177 in and out of the dialysis membrane was determined by UPLC-MS/MS and the plasma protein binding rates of LS-177 and different species plasma protein( Rat,Beagle and human) were calculated.Results: Plasma protein binding rates of LS-177 at three various concentrations( 25,50 and 100 ng·m L-1) were( 81. 2 ±5. 2) %,( 77. 2 ±6. 2) %,( 79. 8 ± 5. 2) % in rat plasma;( 84. 2 ± 2. 7) %,( 82. 5 ± 3. 1) %,( 84. 1 ±3. 9) % in beagle plasma and( 84. 0 ± 3. 4) %,( 81. 7 ± 4. 0) %,( 80. 5 ± 3. 4) % in human plasma,respectively.Conclusion: This method for determining plasma protein binding rates of LS-177 was simple,stable and reliable.The plasma protein binding rate of LS-177 has no significance concentration dependent and species differences.
引文
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