journal article·2015-02-09

Pulmonary Insulin-like Growth Factor I Delivery from Trehalose and Silk-Fibroin Microparticles

Isabel Schultz, Frederic Vollmers, Tessa Lühmann, Jens-Christoph Rybak, Ronja Wittmann, Katharina Stank, Hartwig Steckel, Boris Kardziev, Michael Schmidt, Petra Högger, Lorenz Meinel

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Abstract

Insulin-like growth factor I (IGF-I) is a strong anabolic peptide with promising therapeutic value in muscle wasting diseases such as sarcopenia. We report a pulmonary IGF-I delivery system deploying silk-fibroin (SF) as carrier and in comparison to trehalose. Both IGF-I delivery systems were characterized regarding IGF-I integrity, IGF-I release profiles and aerodynamic properties. Transepithelial in vitro transport of IGF-I using the pulmonary Calu-3 model cell system followed comparable kinetics and mechanism of uptake as earlier demonstrated for insulin (INS), for which effective pulmonary delivery is known. Microparticles were spray-dried using either trehalose or SF, resulting in geometries allowing alveolar deposition. The effective IGF-I shuttling through the epithelial barrier of the lung was demonstrated in an ex vivo human lung lobe model, and expanded the exciting possibility of this administration route to this effective and anabolic peptide.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Silk-based biomaterials and applications · Knee injuries and reconstruction techniques · Electrospun Nanofibers in Biomedical Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany

Institute for Pharmacy, University of Kiel, Grasweg 9a, DE-24118 Kiel, Germany

Thoraxzentrum Bezirk Unterfranken, DE-97702, Germany

Medical Clinic and Polyclinic I, University of Wuerzburg, DE-97080, Germany

Funding

Bayerische Forschungsstiftung · German Academic Exchange Service

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