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          Institute: MPI für Herz- und Lungenforschung (W. G. Kerckhoff Institut)     Collection: Publikationen des W. G. Kerckhoff-Instituts     Display Documents

ID: 559754.0, MPI für Herz- und Lungenforschung (W. G. Kerckhoff Institut) / Publikationen des W. G. Kerckhoff-Instituts
Biophysical investigation of pulmonary surfactant surface properties upon contact with polymeric nanoparticles in vitro
Authors:Beck-Broichsitter, M.; Ruppert, C.; Schmehl, T.; Guenther, A.; Betz, T.; Bakowsky, U.; Seeger, W.; Kissel, T.; Gessler, T.
Title of Journal:Nanomedicine
Audience:Not Specified
Abstract / Description:Nanoparticulate drug carriers have been proposed for the targeted and controlled release of pharmaceuticals to the lung. However, inhaled particles may adversely affect the biophysical properties of pulmonary surfactant. This study examines the influence of polymeric nanoparticles with distinct physicochemical properties on the adsorption and dynamic surface tension lowering properties of pulmonary surfactant. Nanoparticles had a mean size of 100 nm with narrow size distributions. Although poly(styrene) and poly(D,L-lactide-co-glycolide) nanoparticles revealed a dose-dependent influence on biophysics of pulmonary surfactant, positively-charged nanoparticles made from poly(butyl methacrylate-co-(2-dimethylaminoethyl) methacrylate-co-methyl methacrylate) showed no effect. This behavior is attributed to the differences in zeta-potential and surface hydrophobicity, which in turn involves an altered adsorption pattern of the positively charged surfactant proteins to the nanoparticles. This study suggests that polymeric nanoparticles do not substantially affect the biophysical properties of pulmonary surfactant and may be a viable drug-delivery vehicle for the inhalative treatment of respiratory diseases.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für physiologische und klinische Forschung
External Affiliations:Medical Clinic II, Department of Internal Medicine, Justus-Liebig-Universitat, Giessen, Germany.; Department of Pharmaceutics and Biopharmacy, Philipps-Universitat, Marburg, Germany.
Identifiers:ISSN:1549-9642 (Electronic) 1549-9634 (Linking)
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