Second generation lipid nanoparticles (NLC) as an oral drug carrier for delivery of Lercanidipine hydrochloride (cas 132866-11-6)

Add time:08/26/2019    Source:sciencedirect.com

Lercanidipine hydrochloride is a calcium channel blocker used in the treatment of hypertension. It is a poor water soluble drug with absolute bioavailability of 10%. The aim of this study was to design lercanidipine hydrochloride-loaded nanostructured lipid carriers to investigate whether the bioavailability of the same can be improved by oral delivery. Lercanidipine hydrochloride nanostructured lipid carriers were prepared by the method of solvent evaporation at a high temperature and solidification by freeze drying. The nanostructured lipid carriers were evaluated for particle size analysis, zeta potential, entrapment efficiency, in vitro drug diffusion, ex vivo permeation studies and pharmacodynamic study. The resultant nanostructured lipid carriers had a mean size of 214.97 nm and a zeta potential of −31.6 ± 1.5 mV. More than 70% lercanidipine hydrochloride was entrapped in the NLCs. The SEM studies indicated the formation of type 2 nanostructured lipid carriers. The in vitro release studies demonstrated 19.36% release in acidic buffer pH 1.2 indicating that the drug entrapped in the nanostructured lipid carriers remains entrapped at acidic pH. The ex vivo studies indicated that the drug release was enhanced from 10% to 60.54% at blood pH in 24 h. The in vivo pharmacodynamic study showed that NLCs released lercanidipine hydrochloride in a controlled manner for a prolonged period of time as compared to plain drug. These results clearly indicate that nanostructured lipid carriers are a potential controlled release formulation for lercanidipine hydrochloride and may be a promising drug delivery system for the treatment of hypertension.

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