Abstract
We developed a magnetic solid lipid nanoparticles formulation of paclitaxel (PTX-loaded MSLNs) via emulsification-diffusion method. The physicochemical characterization of PTX-loaded MSLNs was performed by AFM, DLS, determination of entrapment efficiency (EE) and drug loading (DL), DSC, VSM, and physical stability. The in vitro effect of temperature and pulsed magnetic hyperthermia on drug release were studied. PTX-loaded MSLNs had a particle diameter around 250 nm with a narrow size distribution, spherical morphology, EE of 67.3 ± 1.2% and a DL of 17.1 ± 0.4 μg/mg. A decrease of the melting point of the lipid was observed following the preparation of the MSLNs. A threefold increase in the in vitro drug release rate was seen when temperature was raised from 25 to 43 °C. The lipid coating of MPs confer a temperature-dependent drug release and magnetic hyperthermia was used to trigger controlled PTX release from MSLNs.
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