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Default Application of NMR spectroscopy in the development of a biomimetic approach for hydrophobic drug association with physical hydrogels.

Application of NMR spectroscopy in the development of a biomimetic approach for hydrophobic drug association with physical hydrogels.

Related Articles Application of NMR spectroscopy in the development of a biomimetic approach for hydrophobic drug association with physical hydrogels.

Colloids Surf B Biointerfaces. 2013 Dec 19;115C:391-399

Authors: Lůpez-Cebral R, Martin-Pastor M, Paolicelli P, Casadei MA, Seijo B, Sanchez A

Abstract
The clinical application of sparingly soluble drugs is hampered by the wide range of problems associated to their delivery. Herein we present a new physical hydrogel as a delivery system for these drugs. The strategy behind the design of this delivery system involved the incorporation of the protein albumin into the hydrogel with the aim of exploiting its intrinsic capacity to bind small hydrophobic molecules. Prednisolone and ketoconazole were used as model drug molecules. A combination of the saturation transfer difference (STD) spectra and a novel double titration assay followed by NMR was applied to study all of the possible binding modes between albumin and each drug. Finally, the ability of the hydrogel system to release the two model drugs was corroborated. The results of the release studies were in agreement with the drug binding capacities derived from the NMR studies, thus confirming that the potential of the NMR approach as a predictive technique could be useful in evaluating the designs of new drug delivery systems.


PMID: 24503293 [PubMed - as supplied by publisher]



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