Mucoadhesive microspheres based formulation development of ziprasidone hydrochloride for nasal delivery
The purpose of research work was to develop and optimize mucoadhesive microspheres of Ziprasidone hydrochloride for nasal delivery with the aim to enhance the residence time and improve therapeutic efficacy. Mucoadhesive drug delivery systems are those that provide intimate contact of the drug with the mucosa for an extended period of time. In our present work, mucoadhesive chitosan microspheres were prepared by emulsification method using liquid paraffin as external phase. Ten different formulations were developed. Results show that as the concentration of polymer increases it affects the particle size, production yield, encapsulation efficiency, swelling index, in-vitro mucoadhesion and in-vitro drug release of mucoadhesive microspheres. The in vitro mucoadhesion of microspheres was investigated using freshly isolated goat nasal mucosa. The mucoadhesion for M0, M1, M2, and M9 was tested. The mucoadhesion property was satisfactory. The M2 exhibited lowest mucoadhesion of 68.9%, and M0 displayed highest mucoadhesion of 87.5%. The In Vitro release studies it revealed that 84.1% of drug release from formulation M1 at 7hrs. The 50% of the drug was released from the formulation M2 and 70.67% from formulation M9.This formulations were further used for SEM for particles size analysis, mucoadhesion test and in-vitro drug release. The In-vitro % drug release data suggest that the maximum and sustained drug release was obtained for formulation M1.The present study showed that Ziprasidone hydrochloride chitosan microspheres can deliver intanasally which can improve the therapeutic outcome for the Epileptic seizure.
Keywords: Ziprasidone hydrochloride, Mucoadhesive microspheres, Nasal drug delivery, Drug Entrapment efficiency.
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