July 2012

Institute of Bioresearches and Sustainable Development (IBSD), Imphal, a research institute under Department of Biotechnology, Govt. of India, invites applications from the suitable candidates for the following positions for its extramural research project funded by Department of Biotechnology, Govt. of India.

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About Authors:
^*Sunil kumar, Amit kumar shahi, Ravi shanker, R. singh, Dr. R. ParthSarthy, Dr S.K. Prajapati
Kamla Nehru institute of technology and management, Sultanpur.
Bundelkhand university, Department of pharmacy, Jhansi
*sunil.sunilpharma.kumar@gmail.com

ABSTRACT
The purpose of this research is to design proniosomal powder drug delivery system of flurbiprofen in a trial to overcome the adverse effects associated with oral administration of the drug. Conventional chemotherapy for the treatment of intracellular infection is no more effective due to limited permeation of drug into cell. This can be overcome by the use of vesicular drug delivery system. Encapsulation of a drug in vesicular structure can be predicted to prolong the existence of the drug in the systemic circulation and thus enhance penetration into target tissue and reduce toxicity.Proniosomal powder are generally present in transparent, translucent or white texture, which makes them physically stable during storage and transport. Due to the limited solvent system present, the proniosomes formed were the mixture of many phases of liquid crystal, viz. lamellar, hexagonal and cubic phase liquid crystals.The potential of proniosomes as a transdermal drug delivery system for flurbiprofenwas investigated by encapsulating the drug in various formulations of proniosomal powder composed of various ratios of sorbitan fatty acid esters, cholesterol, prepared by slurry method. The formulated systems were characterized in vitro for size, vesicle count, drug entrapment, drug release profiles and vesicular stability at different storage conditions. Stability studies for proniosomal powder were carried out for 4 weeks. The method of proniosome loading resulted in an encapsulation yield of 30.6 – 75.4%. Proniosomes were characterised by transmission electron microscopy. In vitro studies showed prolonged release of entrapped flurbiprofen. At refrigerated conditions, higher drug retention was observed. It is evident from this study that proniosomes are a promising prolonged delivery system for captopril and have reasonably good stability characteristics.

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