研究化疗药物阿霉素在磁性纳米微球表面的吸脱附行为.测定常温时磁性微球静态交换动力学曲线、吸附等温线,求得磁性微球液膜吸附的平衡速率常数为k=0.0072min-1及吸附等温线方程为1/q=0.1305C-1e+0.0054.测定静态脱附曲线,经超声多次脱附实验的结果是阿霉素浓度维持在13ug/ml.透射电镜(TEM)可观察到吸附前后的形貌的不同,激光粒度仪测定磁性微球聚集体的粒径平均为782.3nm.结果表明:阿霉素在磁性微球表面的吸附符合Langmuir型吸附,载药微球在水中可以缓慢释放药物,并且保持了亚微米级的粒径.
参考文献
[1] | 常津 .医用磁性纳米材料的制备-制备条件对有效粒径的影响[J].中国生物医学工程学报,1996,15(04):378-381. |
[2] | Rudge S;Peterson C;Vessely C et al.Adsorption and desorption of chemotherapeutic drugs from a magnetically targeted carrier (MTC)[J].Journal of Controlled Release,2001,74(1-3):335-340. |
[3] | Luiz C.A.Oliveira;Rachel.V.R.A.Rios;Jose D.Fabris .Activated carbon/iron oxide magnetic composites for the adsorption of contaminants in water[J].Carbon: An International Journal Sponsored by the American Carbon Society,2002(12):2177-2183. |
[4] | Rudge SR;Kurtz TL;Vessely CR;Catterall LG;Williamson DL .Preparation, characterization, and performance of magnetic iron-carbon composite microparticles for chemotherapy.[J].Biomaterials,2000(14):1411-1420. |
[5] | 曾碧榕,廖志楠,夏海平,丁马太,何旭敏,蓝伟光.6-氨基青霉烷酸在弱碱性阴离子树脂IRA67上的吸附研究[J].离子交换与吸附,2003(03):277-281. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%