Novel dry powder inhalation carrier:drug-carried lactose microparticles with flower shape and nanoporous structure
10.16438/j.0513-4870.2017-2017-0349
- VernacularTitle:新型干粉吸入剂载体:含纳米孔结构的药用花形载体乳糖微粒
- Author:
Song-wen TAN
1
;
Xu TAN
1
Author Information
1. Au High Tech Ltd., Sydney 2007, Australia
- Publication Type:ORIGINAL ARTICLES
- Keywords:
dry powder inhalation;
carrier;
lactose;
pore structure;
tiotropium bromide
- From:
Acta Pharmaceutica Sinica
2017;52(9):1466-1470
- CountryChina
- Language:Chinese
-
Abstract:
This work was designed to study a novel dry powder inhalation (DPI) carrier for drug loading and release of tiotropium bromide (asthma medicine). The synthesized lactose drug-carrier with a flower shape was crystalline. The carrier with a micro-meso-macroporous structure had advantages of high pore surface area, high capacity of drug loading and fast release of drug. In the study of loading tiotropium bromide, the drug was distributed at the core of carrier using the solution-based method, while the morphology was changed a little and the amount of loaded drug was 5% (w/w). Using the crystallization-based method, the drug was distributed at the shell of carrier, while the morphology was changed a lot and the amount of loaded drug was 49% (w/w). In addition, with the impact of carrier structure, the drug release rate was increased first and then decreased thereafter using the solution-based method, while the drug release rate was decreased first and then increased thereafter using the crystallization-based method. Thus, the lactose microparticles can be used as a novel drug carrier for dry powder inhalation.
