A novel cell compatible impingement system to study in vitro drug absorption from dry powder aerosol formulations
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- 作者：Michael Bur ; Barbara Rothen-Rutishauser ; Hanno Huwer ; Claus-Michael Lehr
- 关键词：Calu-3 ; Air interface deposition ; Cell compatible impingement system ; Multi stage liquid impinger ; Transport experiment ; Dry powder aerosol
- 刊名：European Journal of Pharmaceutics and Biopharmaceutics
- 出版年：2009
- 出版时间：June 2009
- 年：2009
- 卷：72
- 期：2
- 页码：350-357
- 全文大小：412 K
文摘
A modified Astra type multistage liquid impinger (MSLI) with integrated bronchial cell monolayers was used to study deposition and subsequent drug absorption on in vitro models of the human airway epithelial barrier. Inverted cell culture of Calu-3 cells on the bottom side of cell culture filter inserts was integrated into a compendial MSLI. Upside down cultivation did not impair the barrier function, morphology and viability of Calu-3 cells. Size selective deposition with subsequent absorption was studied for three different commercially available dry powder formulations of salbutamol sulphate and budesonide. After deposition without size separation the absorption rates from the aerosol formulations differed but correlated with the size of the carrier lactose particles. However, after deposition in the MSLI, simulating relevant impaction and causing the separation of small drug crystals from the carrier lactose, the absorption rates of the three formulations were identical, confirming the bioequivalence of the three formulations.