Abstract
Management of rheumatic disorders are limited by the inability to provide long-term drug delivery due to the irritation to gastric mucosa and poor availability of drugs, which may be overcome by prolonging the drug release. The nanostructured carriers (NP)based gel was developed as potential topical system for aceclofenac topical delivery. In the present study, chitosan-sodium alginate nanoparticles were investigated using a novel gel base for the prolonged topical delivery NSAID aceclofenac. A modified ionotropic gelation method was used to produce aceclofenac loaded nano particulate systems. Drug content, particle properties such as size, size distribution and zeta potential were determined. The nano particulate system was encapsulated using a novel hydrophilic polymer pemulen in different proportions. The nanoparticles remained within the colloidal range and it was uniformly dispersed in pemulen gel preparation. The gels were evaluated for spredability, extrudability and in vitro, in vivo studies. The optimized formulations were characterized by FT-IR, DSC. In conclusion, nanoparticle based gel could be a promising vehicle for topical delivery of aceclofenac and the novel gel base pemulen can be used for the incorporation topical drugs. Key words: Pemulen, aceclofenac, sodium alginate, transdermal, chitosan, nanoparticle, topical delivery, gel.
Highlights
Aceclofenac is a cyclooxygenase inhibitor used in the treatment of osteoarthritis, rheumatoid arthritis and in management of acute pain in adults
Nanoparticle based gel could be a promising vehicle for topical delivery of aceclofenac and the novel gel base pemulen can be used for the incorporation topical drugs
The preparation of sodium alginate aceclofenac nanoparticles was based on ionotropic gelation process using aqueous phases of the poly cationic chitosan and poly anionic alginate
Summary
Aceclofenac is a cyclooxygenase inhibitor used in the treatment of osteoarthritis, rheumatoid arthritis and in management of acute pain in adults It shows high antiinflammatory and analgesic activities with the incidence of gastric side effects and high therapeutic index (Fei et al, 2012). Nano particles are promising delivery carriers that have been utilized for formulation and delivery of various drugs. For topical administration, they are usually incorporated into gel or cream to increase their residence time, their stability and characteristics. The current study aimed at developing nano particulate topical formulation of aceclofenac using a novel polymer pemulen as a gel base for topical delivery
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