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INTERNATIONAL JOURNAL OF PHARMACEUTICAL RESEARCH

A Step Towards Excellence
ISSN
0975-2366
2009 To 2013

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IJPRT ISSUE

January - March 6 [1] 2014

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Development and Evaluation of Mucoadhesive Microspheres of an Anti-Diabetic Drug with Natural Polymer

Author: Uploaded By-Admin, Nishanth Kumar N, Ramakrishna Raparla, Santhosh Kumar M
Abstract: Gliclazide is an oral hypoglycemic agent used in the treatment of non-insulin dependent diabetes mellitus. Among the people who are suffering from long term disorders, the major had been categorized under the people who are suffering from diabetes and a dosage form is needed for them that should provide continuous therapy and should have a high margin of safety. Microencapsulation plays a great role in providing such a kind of dosage form. Gliclazide microspheres with a coat consisting of alginate and xanthan gum were prepared by orifice-ionic gelation method and emulsification gelation technique. The prepared gliclazide microspheres were evaluated for surface morphology and particle shape, Carr’s index, microencapsulation efficiency, drug release characteristics, compatibility studies rheological studies. The microspheres were found discrete, more spherical and free flowing with emulsion ionic gelation technique. The microsphere size was found in the range 498±12-598±10µm. Sharp endothermic peaks were found from the microspheres formulated with polymers indicating the compatibility between the drug and the polymer xanthan gum. The encapsulation efficiency was found around 57.50±0.59%-61.68±0.43% and percentage drug content is in the range of 19.96±0.48% - 30.09±0.65%. Drug release from the microspheres was found slow, followed zero order release kinetics with non-fickian release mechanism stating release depended on the coat: core ratio and the method employed in the preparation of microspheres. Among two techniques emulsification gelation technique was found to be more suitable for slow and complete release over a long period. These microspheres showed good mucoadhesive property in the in vitro wash of test.
Keyword: Gliclazide, xanthan gum, orifice ionic gelation technique, emulsification ionic gelation technique.
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Ulrich's International Periodical Dictionary
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