Journal
EXPERT OPINION ON DRUG DELIVERY
Volume -, Issue -, Pages -Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17425247.2023.2244881
Keywords
Albumin; inhaled; lung permeability; nebulized; pharmacokinetics; sheep; >
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The objective of this study was to explore the potential of utilizing endogenous albumin and albumin absorption mechanisms in the lungs to enhance the permeability and absorption of inhaled drug delivery systems that bind albumin. The permeability of human albumin through different types of lung cells was investigated, and the pulmonary pharmacokinetics of bovine serum albumin was studied in sheep.
ObjectivesDrug delivery systems typically show limited access to the lung interstitium and absorption after pulmonary delivery. The aim of this work was to undertake a proof-of-concept investigation into the potential of employing endogenous albumin and albumin absorption mechanisms in the lungs to improve lung interstitial access and absorption of inhaled drug delivery systems that bind albumin.MethodsThe permeability of human albumin (HSA) through monolayers of primary human alveolar epithelia, small airway epithelia, and microvascular endothelium were investigated. The pulmonary pharmacokinetics of bovine serum albumin (BSA) was also investigated in efferent caudal mediastinal lymph duct-cannulated sheep after inhaled aerosol administration.ResultsMembrane permeability coefficient values (P-app) of HSA increased in the order alveolar epithelia
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