首页|Development of dexamethasone-loaded mixed polymeric micelles for nasal delivery
Development of dexamethasone-loaded mixed polymeric micelles for nasal delivery
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NSTL
Elsevier
Our study aimed to formulate a novel dexamethasone (DXM)-loaded, mixed polymeric micelle-based drug delivery system, focusing on the auspicious nose-to-brain pathway, as a key delivery route to treat central nervous system (CNS) associated diseases. Polymeric micelles might be a solution to deliver drugs to the place of action compared to conventional formulations. Due to low Z-average (89.92 +/- 2.7 nm), a polydispersity index of 0.216 +/- 0.014 and high surface polarity (52.23%), a significant increase in water solubility (14-fold) was experienced. This increase resulted in favourable dissolution profile at nasal and axonal conditions with high in vitro permeability value (14.6x10- 6 cm/s) on polar brain (porcine) lipid extract. Modified Side-bi-side (R) type diffusion study confirmed rapid and efficient passive diffusion through the nasal mucosa contributed by strong mucoadhesive properties. The final formulation met all the requirements of a nasal drug delivery system with rapid onset of action, meaning DXM can reach the CNS and there it can exert its beneficial effects in pathological conditions.
NSTL
Elsevier
