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Chitosan/cyclodextrin nanoparticles as drug delivery system

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Abstract

One of the most attractive areas of research in drug delivery is the design of nanomedicines consisting of nanosystems that are able to deliver drugs to the right place, at appropriate time. Natural polysaccharides, due to their outstanding merits, have received more and more attention in the field of drug delivery systems. In particular, polysaccharides seem to be the most promising materials in the preparation of nanometric carriers. The main goal of the present study was to investigate the potential of a recent generation of hybrid polysaccharide nanocarriers, composed of chitosan (CS) and an anionic cyclodextrin, carboxymethyl-β-cyclodextrin (CM-β-CD), for the encapsulation of a model drug, sulindac. CS and CM-β-CD were processed to nanoparticles (NPs) via the ionotropic gelation technique. The stoichiometric ratio between these two polymers was found to influence particle size and zeta potential. Decreasing CS:CM-β-CD ratio led to an increase in particle size and decrease in zeta potential. DSC and FTIR analyses confirmed formation of NPs and encapsulation of sulindac inside them. Release profiles indicate a continuous release of the drug throughout 24 h. However, the rate of release was more rapid during the first hours; about 55–90% of the drug being released after 3 h.

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Correspondence to Hussein Osman Ammar.

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Ammar, H.O., El-Nahhas, S.A., Ghorab, M.M. et al. Chitosan/cyclodextrin nanoparticles as drug delivery system. J Incl Phenom Macrocycl Chem 72, 127–136 (2012). https://doi.org/10.1007/s10847-011-9950-5

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  • DOI: https://doi.org/10.1007/s10847-011-9950-5

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