作者
Sara E Maloney, Ian E Stewart, Jeffrey B Mecham, Mercedes Gonzalez-Juarrero, Bernd Meibohm, Anthony J Hickey
发表日期
2023/8/18
期刊
JoVE (Journal of Visualized Experiments)
期号
198
页码范围
e65756
简介
Dry powder inhalers offer numerous advantages for delivering drugs to the lungs, including stable solid-state drug formulations, device portability, bolus metering and dosing, and a propellant-free dispersal mechanism. To develop pharmaceutical dry powder aerosol products, robust in vivo testing is essential. Typically, initial studies involve using a murine model for preliminary evaluation before conducting formal studies in larger animal species. However, a significant limitation in this approach is the lack of suitable device technology to accurately and reproducibly deliver dry powders to small animals, hindering such models' utility. To address these challenges, disposable syringe dosators were developed specifically for intrapulmonary delivery of dry powders in doses appropriate for mice. These dosators load and deliver a predetermined amount of powder obtained from a uniform bulk density powder bed. This …
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