Yun-xia HU, Jin CHANG, Yi GUO, Chun-sheng KANG, Xu-bo YUAN, Cun-xia SONG. The Degradation and Release Behavior of 5-Fluorouracil-loaded PLGA/O-CMC Nanoparticles in vitro[J]. Polymer Bulletin, 2004,17(5):62-68.
Yun-xia HU, Jin CHANG, Yi GUO, Chun-sheng KANG, Xu-bo YUAN, Cun-xia SONG. The Degradation and Release Behavior of 5-Fluorouracil-loaded PLGA/O-CMC Nanoparticles in vitro[J]. Polymer Bulletin, 2004,17(5):62-68. DOI: 10.14028/j.cnki.1003-3726.2004.05.009.
Due to the attractive biodegradation and physicochemical properties
poly (D
L-lactide-coglycolic acid) (PLGA)and
o
-carboxymethyl chitosan(
O
-CMC) were chosen to microencapsulate 5-fluorouracil (5-FU) by improved W/O/W method.The mean size of the resulting5-FU-loaded nanoparticles (NPs) was 98.5nm with fine polydispersity (0.192) and high Zeta potential (61.48eV).The drug-loading level and encapsulation efficiency of the NPs were 18.9% and 86%
respectively.SEM was used to study the morphological change of NPs during the degradation;and the weight loss of NPs and pH change of degradation medium were traced as well.The investigation of 5-FU release behavior from NPs showed that(1) the release kinetics of5-FU from NPs in early12hours was coincided with Hugucbi release equation;(2)the release kinetics in20days was coincided with Zero-level release.
关键词
O-羧甲基壳聚糖聚乳酸-乙醇酸共聚物纳米微粒抗癌药物
Keywords
O-Carboxymethylated chitosan(O-CMC)Poly (DL-lactide-co-glycolic acid) (PLGA)Nanoparticles(NPs)Anticancer drug