DEVELOPMENT OF NANOGEL OF OFLOXACIN FOR OCULAR DRUG DELIVERY

Multiple anatomical and physiological obstacles have always made ocular drug administration difficult. Different novel drug delivery systems, including nanogels, nanoparticles, liposomes, dendrimers, implants, contact lenses, nanosuspensions, microneedles, and in situ thermosensitive gels, have been developed to get around the barriers to improve ocular Bioavailability. For the encapsulation of visitor molecules, nanogel has become a flexible drug delivery technology in this aspect. Numerous techniques for the creation of nanogels have been developed over time, such as Concomitant polymerization and crosslinking, Separate polymerization and crosslinking, Micro templating/crosslinking, etc. In this work, Ofloxacin-loaded Nanostructured Lipid Carrier has been prepared with the help of Design expert software (Version 7.1.5) taking amount of liquid lipid, and homogenization speed as independent variables and particle size, spreadability coefficient, % entrapment efficiency as responses. Dynamic Light Scattering (DLS) was used for studying the particle size. The results confirmed the size of the NLC within the nano range (78.79- 648.4 nm). From the experiment, optimized product was found to be 78.79 nm with 66.2% drug entrapment efficiency and 0.359 gm. cm/sec spreadability coefficient. From the optimized formulation drug diffused gradually in increasing order and maintained a constant rate after a few hours with a diffusion rate of 89.79% in 7 hours. In ex-vivo permeation study through goat skin, it has been found that the permeation of ofloxacin through goat ocular skin from the optimized product is around 71.33% in 7 hours.