Dry powder aerosol containing muco-inert particles for excipient enhanced growth pulmonary drug delivery.

Dry powder aerosol containing muco-inert particles for excipient enhanced growth pulmonary drug delivery.
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DOI:
10.1016/j.nano.2020.102262
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发表时间:
2020-10
期刊:
Nanomedicine : nanotechnology, biology, and medicine
影响因子:
--
通讯作者:
Xu Q
Xu Q
中科院分区:
其他
文献类型:
--
作者:
Chai G;Hassan A;Meng T;Lou L;Ma J;Simmers R;Zhou L;Rubin BK;Zhou QT;Longest PW;Hindle M;Xu Q

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顽固的痰液对用于治疗囊性纤维化(CF)肺部感染的气溶胶抗生素构成了关键的扩散屏障。我们使用致密聚乙二醇包被的聚苯乙烯纳米颗粒(PS-PEG NP)作为模型粘液惰性颗粒(MIP)进行了一项概念验证研究,该模型采用赋形剂增强生长(EEG)策略配制为粉末,旨在最大限度地减少胸外气道损失,最大限度地在气道中沉积,并进一步克服 CF 肺部的痰屏障。通过喷雾干燥制备含有 PS-PEG MIP 的脑电图气雾剂,并产生几何直径约为 2 μm 的离散球形颗粒;超过 80% 的粉末剂量是通过新型小动物干粉吸入器 (DPI) 输送的。从 EEG 气溶胶中释放的 MIP 具有与悬浮液制剂相当的人体气道粘液和 CF 痰液扩散特性。这些特性使该制剂成为治疗 CF 肺部感染的有前景的肺部药物递送系统。含有粘液惰性颗粒(MIP)的干粉气雾剂作为一种有前景的肺部药物输送平台。微米级赋形剂促进生长(EEG)气雾剂颗粒可实现干粉吸入器良好的排空效率,并最大限度地减少口腔损失。气道中的高湿度增加了气溶胶颗粒的尺寸并增强了气道沉积。从 EEG 气溶胶颗粒中释放的 MIP 迅速扩散到痰中以释放药物。
Tenacious sputum poses a critical diffusion barrier for aerosol antibiotics used to treat cystic fibrosis (CF) lung infection. We conducted a proof-of-concept study using dense poly(ethylene glycol) coated polystyrene nanoparticles (PS-PEG NPs) as model muco-inert particles (MIP) formulated as a powder using an excipient enhanced growth (EEG) strategy, aiming to minimize extrathoracic airway loss, maximize deposition in the airway and further overcome the sputum barrier in the CF lungs. The EEG aerosol formulation containing PS-PEG MIP was prepared by spray drying and produced discrete spherical particles with geometric diameter of approximately 2 μm; and >80% of the powder dose was delivered from a new small-animal dry powder inhaler (DPI). The MIP released from the EEG aerosol had human airway mucus and CF sputum diffusion properties comparable to the suspension formulation. These properties make this formulation a promising pulmonary drug delivery system for CF lung infections. Dry powder aerosol containing muco-inert particles (MIP) as a promising pulmonary drug delivery platform. Micrometer-sized excipient enhanced growth (EEG) aerosol particles achieve good emptying efficiency from dry powder inhalers and minimize mouth-throat losses. The high humidity in the airway increases aerosol particle size and enhance airway deposition. MIP released from the EEG aerosol particles rapidly diffuse into the sputum to release drug.
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影响因子: --
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