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Most therapeutic proteins are classified as class III drugs according to the Biopharmaceutical Classification System means that the low permeability across the intestinal epithelium is the rate-limited step for their oral absorption. Cationic chitosan nanoparticles have been found to open the tight junctions between epithelial cells. On the other hand, bioadhesive delivery devices could prolong the...
In the present study, we developed novel insulin-loaded hyaluronic acid (HA) nanoparticles for insulin delivery. The insulin-loaded HA nanoparticles were prepared by reverse-emulsion-freeze-drying method. This method led to a homogenous population of small HA nanoparticles with average size of 182.2 nm and achieved high insulin entrapment efficiencies (approximately 95%). The pH-sensitive HA nanoparticles...
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