Abstract
From the past few decades, tremendous awareness has been laid on the use of natural polymers in ocular drug delivery. Chitosan, a modified natural carbohydrate polymer, has number of applications in the field of ophthalmics and attracted a great deal of attention of scientific community, academicians and environmentalists due to its unique features. Chitosan has been explored for the delivery of drugs, genes, biotechnological products, proteins and peptides to the target site within ocular tissues. Chitosan being a polycationic in nature interacts with the polyanionic surface of ocular mucosa through hydrogen bonding /ionic interactions and enhance the mucoadhesive effect of formulation. Sustained and controlled ocular delivery can be achieved with chitosan based formulations like chitosan gels, inserts, chitosan coated liposome/niosome and chitosan nanoparticles. This review discussed various aspects related to chitosan and chitosan based formulations particularly developed for ocular therapeutics. The fate and toxicological consideration related to chitosan, resulting with its interaction to ocular tissues, has also been summed up in addition.
Keywords: Chitosan, ocular delivery, nanoparticles, ocular toxicity
Mini-Reviews in Medicinal Chemistry
Title: Chitosan and its Role in Ocular Therapeutics
Volume: 9 Issue: 14
Author(s): Sheetu Wadhwa, Rishi Paliwal, Shivani Rai Paliwal and S. P. Vyas
Affiliation:
Keywords: Chitosan, ocular delivery, nanoparticles, ocular toxicity
Abstract: From the past few decades, tremendous awareness has been laid on the use of natural polymers in ocular drug delivery. Chitosan, a modified natural carbohydrate polymer, has number of applications in the field of ophthalmics and attracted a great deal of attention of scientific community, academicians and environmentalists due to its unique features. Chitosan has been explored for the delivery of drugs, genes, biotechnological products, proteins and peptides to the target site within ocular tissues. Chitosan being a polycationic in nature interacts with the polyanionic surface of ocular mucosa through hydrogen bonding /ionic interactions and enhance the mucoadhesive effect of formulation. Sustained and controlled ocular delivery can be achieved with chitosan based formulations like chitosan gels, inserts, chitosan coated liposome/niosome and chitosan nanoparticles. This review discussed various aspects related to chitosan and chitosan based formulations particularly developed for ocular therapeutics. The fate and toxicological consideration related to chitosan, resulting with its interaction to ocular tissues, has also been summed up in addition.
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Cite this article as:
Wadhwa Sheetu, Paliwal Rishi, Rai Paliwal Shivani and P. Vyas S., Chitosan and its Role in Ocular Therapeutics, Mini-Reviews in Medicinal Chemistry 2009; 9 (14) . https://dx.doi.org/10.2174/138955709791012292
DOI https://dx.doi.org/10.2174/138955709791012292 |
Print ISSN 1389-5575 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5607 |
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