A New Liposomal-Drug-in-Adhesive Patch for Transdermal Delivery of Sodium Diclofenac

Seyed Mojtaba Taghizadeh, Sara Bajgholi

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DOI: 10.4236/jbnb.2011.225069                

Abstract

Liposomes are known to have considerable potential as drug carriers such as liposomal suspension, freeze dried and cream-based systems among many other liposomal formulations. In this study a new drug-in-adhesive patch was fabricated using liposome-based nanocarrier. Transfersomes as ultra-deformable liposomes are based on phosphatidylcholin 95% (phospholipon 90G) and phosphatidylcholin 50% (phosal 50PG) were prepared and further optimized in a final acrylic patch system for effective adhesion. The prepared liposomes were added to an acrylic adhesive to obtain a new hybrid transdermal patch termed as “lipo-drug-in-adhesive” patch system. The sodium diclofenac was selected as a model drug and the permeation of the drug across rat skin was evaluated (P > 0.05), using the lipo-drug-in-adhesive patch system with various percentages of transfersomes (4% - 8%w/w) and constant concentration of the drug (2% w/w). The peel strength and tack value of samples were also examined and quantified. The maximum flux of sodium diclofenac was observed in samples containing 8% (w/w) phosphatidylcholin 50%. The peel strength and tack value in samples containing phosphatidylcholin 50% were lower than those samples containing phosphatidylcholin 95%. It was observed that with increased amount of liposome in drug-in-adhesive patch system, the rate of skin permeation of the drug was also increased. It can be concluded that the developed lipo-drug-in-adhesive patch system enhances the drug release potential of transdermal delivering systems.

Keywords

Liposome, Sodium Diclofenac, Acrylic Adhesive, Peel Strength, Tack Value

Conflicts of Interest

The authors declare no conflicts of interest.

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