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Tropical Journal of Pharmaceutical Research

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Development and evaluation of floating microspheres of curcumin in alloxan-induced diabetic rats

Kapil Kumar, Navin Chandra Pant, S Ahmad, M.V. Fateh, A.K. Rai, Bipin Verma, Himanshu Chaurasia

Abstract


Purpose: To prepare and evaluate floating microspheres of curcumin for prolonged gastric residence and to study their effect on alloxan-induced diabetic rats.

Methods: Floating microsphere were prepared by emulsion-solvent diffusion method, using hydroxylpropyl methylcellulose, chitosan and Eudragit S 100 polymer in varying proportions. Ethanol/dichloromethane blend was used as solvent in a ratio of 1:1. The floating microspheres were evaluated for flow properties, particle size, incorporation efficiency, as well as in-vitro floatability and drug release. The anti-diabetic activity of the floating microspheres of batch FM4 was performed on alloxaninduced diabetic rats.

Result: The floating microspheres had particle size, buoyancy, drug entrapment efficiency and yield in the ranges of 255.32 - 365.65 μm, 75.58 - 89.59, 72.6 - 83.5, and 60.46 - 80.02 %, respectively. Maximum drug release after 24 h was 82.62 % for formulation FM4 and 73.879, 58.613 and 46.106 % for formulations FM1, FM2, and FM3 respectively. In-vivo data obtained over a 120-h period indicate that curcumin floating microspheres from batch FM4 showed the better glycemic control than control and a commercial brand of the drug.

Conclusion: The developed floating curcumin delivery system seems economical and effective in diabetes management in rats, and enhances the bioavailability of the drug.

Keywords: Gastro-retentive, Sustained release, Bioavailability, Curcumin, Floating microspheres, Diabetes




http://dx.doi.org/10.4314/tjpr.v15i9.1
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