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Abstract
This research focuses on the fabrication and evaluation of solid lipid nanoparticles (SLNs) for improved ocular delivery of voriconazole (VCZ). Compritol and palmitic acid were selected as lipid carriers based on drug solubility and partitioning behavior. Poloxamer and soya lecithin were the choice for surfactant, while sodium taurocholate was used as a co-surfactant. The particle sizes of the SLNs determined by zetasizer and transmission electron microscopy (TEM) were found within the desired range. The in vitro release study of SLNs exhibited a sustained-release property of the drug. The ex vivo studies displayed enhanced corneal drug permeation from SLNs in comparison to the drug suspension. Further, the corneal hydration studies, histopathology and Hen's Egg Test Chorio Allantoic Membrane (HETCAM) assay confirmed the non-irritancy of the nano-formulation. The in vivo study confirmed the higher availability of VCZ (from SLN) in aqueous humor with minimal nasolacrymal drainage in contrast to the drug suspension. A good in-vitro in-vivo correlation (IVIVC) further confirmed the potential of SLN as an effective carrier for ocular delivery.
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