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Chitosan and its role in ocular therapeutics
Sheetu Wadhwa1, Rishi Paliwal, Shivani Rai Paliwal
1Nanomedicine Research Centre, Department of Pharmaceutics, Indo-Soviet Friendship College of Pharmacy, Moga, Punjab, India.
Mini Reviews in Medicinal Chemistry
|January 29, 2010
Summary
Chitosan, a natural polymer, shows promise for ocular drug delivery due to its mucoadhesive properties. This review explores chitosan formulations for sustained and controlled delivery of various therapeutic agents to the eye.
Area of Science:
- Biomaterials Science
- Ophthalmology
- Drug Delivery
Background:
- Natural polymers are increasingly utilized in ocular drug delivery systems.
- Chitosan, a modified carbohydrate polymer, offers unique properties beneficial for ophthalmic applications.
- Its polycationic nature facilitates mucoadhesion to the ocular surface.
Purpose of the Study:
- To review the applications of chitosan and its formulations in ocular therapeutics.
- To discuss the potential of chitosan for sustained and controlled drug delivery in the eye.
- To summarize the fate and toxicological aspects of chitosan in ocular tissues.
Main Methods:
- Literature review of studies on chitosan in ocular drug delivery.
- Analysis of chitosan's interaction with ocular mucosa.
- Evaluation of various chitosan-based formulations (gels, inserts, nanoparticles, etc.).
Main Results:
- Chitosan enhances mucoadhesion through ionic and hydrogen bonding interactions.
- Chitosan-based formulations enable sustained and controlled release of drugs, genes, and proteins.
- Various chitosan formulations have been developed for targeted ocular delivery.
Conclusions:
- Chitosan is a versatile natural polymer for developing advanced ocular drug delivery systems.
- Chitosan-based formulations offer significant potential for improved ocular therapeutics.
- Further research into chitosan's ocular fate and toxicology is warranted.
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