Journal
METHODS AND PROTOCOLS
Volume 6, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/mps6050097
Keywords
amiodarone; solid lipid nanoparticles; controlled delivery
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This study aimed to improve the solubility of amiodarone by encapsulating it into solid lipid nanoparticles using Compritol(R) 888 ATO (pellets) (C888) as a lipid matrix and Transcutol(R) (T) as a surfactant. Among the tested formulations, P5 showed the most favorable pharmaco-technical properties and the potential for controlled delivery of amiodarone in oral pharmaceutical products.
In various drug delivery systems, solid lipid nanoparticles are dominantly lipid-based nanocarriers. Amiodarone hydrochloride is an antiarrhythmic agent used to treat severe rhythm disturbances. It has variable and hard-to-predict absorption in the gastrointestinal tract because of its low solubility and high permeability. The aims of this study were to improve its solubility by encapsulating amiodarone into solid lipid nanoparticles using two excipients-Compritol (R) 888 ATO (pellets) (C888) as a lipid matrix and Transcutol (R) (T) as a surfactant. Six types of amiodarone-loaded solid lipid nanoparticles (AMD-SLNs) were obtained using a hot homogenization technique followed by ultrasonication with varying sonication parameters. AMD-SLNs were characterized by their size distribution, polydispersity index, zeta potential, entrapment efficiency, and drug loading. Based on the initial evaluation of the entrapment efficiency, only three solid lipid nanoparticle formulations (P1, P3, and P5) were further tested. They were evaluated through scanning electron microscopy, Fourier-transform infrared spectrometry, near-infrared spectrometry, thermogravimetry, differential scanning calorimetry, and in vitro dissolution tests. The P5 formulation showed optimum pharmaco-technical properties, and it had the greatest potential to be used in oral pharmaceutical products for the controlled delivery of amiodarone.
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