alexa Nanoparticles made from novel starch derivatives for transdermal drug delivery.
Materials Science

Materials Science

Journal of Nanomedicine & Nanotechnology

Author(s): SantanderOrtega MJ, Stauner T, Loretz B, OrtegaVinuesa JL, BastosGonzlez D,

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Abstract The goal of this paper was aimed to the formulation of nanoparticles by using two different propyl-starch derivatives - referred to as PS-1 and PS-1.45 - with high degrees of substitution: 1.05 and 1.45 respectively. A simple o/w emulsion diffusion technique, avoiding the use of hazardous solvents such as dichloromethane or dimethyl sulfoxide, was chosen to formulate nanoparticles with both polymers, producing the PS-1 and PS-1.45 nanoparticles. Once the nanoparticles were prepared, a deep physicochemical characterization was carried out, including the evaluation of nanoparticles stability and applicability for lyophilization. Depending on this information, rules on the formation of PS-1 and PS-1.45 nanoparticles could be developed. Encapsulation and release properties of these nanoparticles were studied, showing high encapsulation efficiency for three tested drugs (flufenamic acid, testosterone and caffeine); in addition a close to linear release profile was observed for hydrophobic drugs with a null initial burst effect. Finally, the potential use of these nanoparticles as transdermal drug delivery systems was also tested, displaying a clear enhancer effect for flufenamic acid. This article was published in J Control Release and referenced in Journal of Nanomedicine & Nanotechnology

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