Preparation，characterization and in vitro anti-inflammatory activity of tetrandrine-loaded chitosan-stearic acid nano micelles modified with folic acid
- VernacularTitle:叶酸修饰的粉防己碱壳聚糖-硬脂酸纳米胶束的制备、表征及体外抗炎活性考察
- Author:
Fei XUE
1
;
Lan YANG
1
;
Jinhua CHANG
1
;
Pei LIU
1
;
Ruxing WANG
1
Author Information
1. Institute of Chinese Materia Medica of Chengde Medical University/Hebei Provincial Key Laboratory of Research and Development for Chinese Materia Medica，Hebei Chengde 067000，China
- Publication Type:Journal Article
- Keywords:
tetrandrine;
nano micelles;
preparation techno-
- From:
China Pharmacy
2024;35(8):925-930
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To prepare tetrandrine （TET）-loaded chitosan（CS）-stearic acid （SA） nano micelles modified with folic acid （FA）（ FA-CS-SA/TET nano micelles）， characterize them and study the anti-inflammatory effect in vitro. METHODS FA- CS-SA/TET nano micelles were prepared by ultrasonic method； the preparation technology was optimized by orthogonal test and validation test was also performed with the mass ratio of FA-CS-SA to TET， ultrasound power and ultrasound times as the factors， using the comprehensive score of entrapment efficiency （EE）， drug loading （DL） and particle size as evaluation index. FA-CS-SA/ TET nano micelles prepared by the optimal technology were characterized， and their release performance in vitro was investigated. RAW264.7 cells were used as subjects to investigate their anti-inflammatory activity in vitro. RESULTS The optimal preparation technology included that the mass ratio of FA-CS-SA to TET was 2∶1， ultrasonic power was 200 W， and the ultrasonic frequency was 200 times. The parameters of FA-CS-SA/TET nano micelles prepared by optimized technology included that EE was （98.86± 0.30）%， DL was （28.57±0.34）%， the average particle size was （227.0±9.4） nm， polydispersity index was 0.42±0.04， and the Zeta potential was（12.6±2.3）mV， respectively. The nano micelles were uniform in appearance and round in shape. The nano micelles were released quickly in 0.5% sodium dodecyl sulfate solution， with a cumulative release rate of （79.49±3.43）% within 72 hours， and its anti-inflammatory effect was stronger than that of TET raw materials. CONCLUSIONS FA-CS-SA/TET nano micelles are prepared successfully in the study， with good drug loading performance， uniform particle size， and good in vitro anti-inflammatory activity.
