Nanosuspension: a new vehicle for the improvement of the delivery of drugs to the ocular surface. Application to Amphotericin-B.

Summary of "Nanosuspension: a new vehicle for the improvement of the delivery of drugs to the ocular surface. Application to Amphotericin-B."

Present limitations in the management of ophthalmic fungal infections include the inability to provide long-term extraocular drug delivery without compromising intraocular structures and/or systemic drug exposure. In the present study, the potential of Eudragit RS 100 nanoparticles as a new vehicle for the improvement of the delivery of drugs to the ocular mucosa was investigated. Amphotericin-B was chosen as a model compound because of its potential usefulness for the treatment of the fungal diseases. A solvent displacement technique was used to produce Amphotericin-B loaded Eudragit nanoparticles. These nanoparticles had a mean size range of 150-290 nm, a zeta potential of + 19-28 mV. Even after 6 months of stability study results were unchanged, this was very much suitable for ocular application. In vitro release studies revealed that maximum amount of drug was released within 24hrs (60%). The results obtained from microbial assay showed that the antifungal activity of drug-loaded nanoparticles was equal or slightly lower than that of free AmB solution. In vivo experiments showed that, following topical instillation of nanosuspension to rabbit's eye, there was no irritation. From these results, we can conclude that Eudragit RS 100 nanosuspension may represent an interesting vehicle to deliver the drug in eye.


School of Pharmacy and Technology Management, NMIMS University, Mumbai, Maharastra, India.

Journal Details

This article was published in the following journal.

Name: Nanomedicine : nanotechnology, biology, and medicine
ISSN: 1549-9642


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