Abstract
Chitosan-cyclodextrin hybrid nanoparticles (NPs) were obtained by the ionic gelation process in the presence of glutathione (GSH), chosen as a model drug. NPs were characterized by means of transmission electron microscopy and zeta-potential measurements. Furthermore, a detailed X-ray photoelectron spectroscopy study was carried out in both conventional and depth-profile modes. The combination of controlled ion-erosion experiments and a scrupulous curve-fitting approach allowed for the first time the quantitative study of the GSH in-depth distribution in the NPs. NPs were proven to efficiently encapsulate GSH in their inner cores, thus showing promising perspectives as drug carriers.
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Thanks are due to G. Trapani (Pharmaco-Chemistry Department, University of Bari) for helpful discussions.
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Ieva, E., Trapani, A., Cioffi, N. et al. Analytical characterization of chitosan nanoparticles for peptide drug delivery applications. Anal Bioanal Chem 393, 207–215 (2009). https://doi.org/10.1007/s00216-008-2463-4
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DOI: https://doi.org/10.1007/s00216-008-2463-4