Comparison of two preparation methods of ultrasound microbubbles loaded with paclitaxel
10.3321/j.issn:1003-3289.2009.07.007
- VernacularTitle:比较两种制备载紫杉醇超声微泡的方法
- Author:
Mei ZHU
;
Zheng LIU
;
Ping ZHANG
;
Hongmin LIANG
;
Kaibin TAN
;
Chixue FU
;
Peijing LI
;
Yunhua GAO
;
Rui LI
- Publication Type:Journal Article
- Keywords:
Paclitaxel;
Microbubbles;
Ultrasonography;
Drug delivery;
Contrast media
- From:
Chinese Journal of Medical Imaging Technology
2009;25(7):1148-1151
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare two effective preparation methods for paclitaxel-loaded lipid microbubbles, and to evaluate the physiochemical properties as for acoustic activated drug delivery. Methods Paclitaxel-loaded lipid microbubbles were prepared with two methods: one was mixed with phospholipids directly (Ⅰ); the other was added in triacetin, then mixed with phospholipids (Ⅱ). Concent ration, size, pH, drug entrapment efficiency, drug-loading amounts of these two kinds of paclitaxel-loaded lipid microbubbles were studied, while drug release with ultrasound and tumor imaging enhanced on rabbit breast tumor were observed. Results There was no significant difference in tumor imaging between two kinds of microbubbles which could be ruptured by low energy ultrasound. Compared with Ⅰ, the mean diameter of Ⅱ decreased significantly ([ 1.07±0.38] μm vs [2.79± 0.41] μm, P<0.01), the surface potencial was higher ([19.10±0.32] mV vs [-5.90±0.21] mV, P<0.01), whereas entrapment efficiency and drug-loading amounts increased markedly ([ 95.00±1.22]% vs [36.10±4.74]%, P<0.01; [5.60±0.11]% vs [0.50±0.04]%, P<0.01). Conclusion The Ⅱ paclitaxel-loaded lipid microbubbles added triacetin have an important clinical value.
