TY  - THES
T1  - Bio-nano interactions in the peripheral lungs: role of pulmonary surfactant components in alveolar macrophage clearance of nanoparticles
A1  - Ruge,Christian Arnold
Y1  - 2012/07/03
N2  - Bio-nano interactions can be considered as the sum of complex processes and reactions occurring when nanoparticles (NP) get in contact with living systems. Regarding deposition of NPs in the lungs, interactions with the here primarily encountered biological matter, i.e. pulmonary surfactant (PS) are of particular interest, as they might play a significant role the further biological fate of such systems. Therefore, the central topic of this work was to investigate the binding of relevant components from PS to model NPs with chemically differing surface modifications. Moreover, effects of PS biomolecules on NP uptake by alveolar macrophages (AM) as the main clearance pathway for particulate matter from the peripheral lungs were studied. It could be demonstrated that adsorption of surfactant proteins A (SP-A) and D (SP-D) to NPs occurs in a manner primarily dependent on particle material properties. In addition, the further interaction of such protein-particles complexes with AMs is greatly influenced by these proteins. Furthermore, it could be shown that surfactant lipids can modulate such protein-mediated effects, leading to the overall conclusion that the complex interplay of PS components potentially assimilates the AM clearance of NPs, regardless of their surface properties. In summary, these findings contribute to a better understanding of how NP-based systems interact at the air- blood-barrier.
KW  - Surfactant-Proteine
KW  - Surfactant-Protein A
KW  - Nanopartikel
KW  - Alveolarphagozyt
KW  - Clearance
KW  - Pharmazeutische Technologie
CY  - Saarbrücken
PB  - Universitäts- und Landesbibliothek
AD  - Postfach 151141, 66041 Saarbrücken
UR  - http://scidok.sulb.uni-saarland.de/volltexte/2012/4888
ER  -