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Sci. Pharm. 2012, 80(3), 749-764; doi:10.3797/scipharm.1202-12

Nanostructured Lipid Carriers (NLC)-Based Gel for the Topical Delivery of Aceclofenac: Preparation, Characterization, and In Vivo Evaluation

1
Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh-786004, Assam, India
2
Department of Pharmacology, M. K. C. G. Medical College and Hospital, Berhampur, Orissa, India
3
Department of Pharmaceutics, Bengal School of Technology, Hoogly, West Bengal, India
*
Author to whom correspondence should be addressed.
Received: 19 February 2012 / Accepted: 13 March 2012 / Published: 18 June 2012
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Abstract

The aim of this study was to prepare nanostructured lipid carriers (NLC)-based topical gel of aceclofenac for the treatment of inflammation and allied conditions. Stearic acid as the solid lipid, oleic acid as the liquid lipid, pluronic F68 as the surfactant, and phospholipon 90G as the co-surfactant were used. NLCs were prepared by melt-emulsification, low-temperature solidification, and high-speed homogenization methods. Characterization of the NLC dispersion was carried out through particle size analysis, scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and an in vitro release study. The anti-inflammatory effect of the NLC gel was assessed by the rat paw edema technique and compared to marketed aceclofenac gel. The NLC dispersions exhibited d90% between 233 nm and 286 nm. All of the NLC showed high entrapment efficiency ranging from 67% to 82%. The particle size of NLC was further confirmed by the SEM study. The result of DSC showed that aceclofenac was dispersed in NLC in an amorphous state. Both the entrapment and release rate were affected by the percentage of oleic acid, but the method of preparation affected only the entrapment efficiency. The nanoparticulate dispersion was suitably gelled and assessed for in vitro permeation. Finally, NLC-based gels were found to possess superior (almost double) the anti-inflammatory activity compared to the marketed product. The anti-inflammatory activity of NLC gel showed a rapid onset of action, as well as a prolonged duration of action as compared with the marketed gel.
Keywords: Aceclofenac; Nanostructured lipid carriers (NLC); Topical gel; Nanoparticle Aceclofenac; Nanostructured lipid carriers (NLC); Topical gel; Nanoparticle
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

PATEL, D.; DASGUPTA, S.; DEY, S.; ROJA RAMANI, Y.; RAY, S.; MAZUMDER, B. Nanostructured Lipid Carriers (NLC)-Based Gel for the Topical Delivery of Aceclofenac: Preparation, Characterization, and In Vivo Evaluation. Sci. Pharm. 2012, 80, 749-764.

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