Chitosan-based crosslinking for controlled topical drug release in rhinosinusitis

Area of Science:

• Biomaterials Science
• Drug Delivery Systems
• Polymer Chemistry

Background:

• Chitosan, a natural polysaccharide, is recognized for its biocompatibility and biodegradability.
• Its potential as a drug delivery vector is actively explored in pharmaceutical research.
• Understanding crosslinking effects on drug release kinetics is crucial for therapeutic applications.

Purpose of the Study:

• To evaluate the efficacy of crosslinked chitosan as a drug delivery vector.
• To investigate the influence of chitosan crosslinking on drug release profiles.
• To determine if drug hydrophilicity affects release kinetics from crosslinked chitosan.

Main Methods:

• Chitosan was crosslinked using established chemical methods.
• Therapeutics with varying hydrophilicity were loaded into the crosslinked chitosan matrix.
• In vitro drug release studies were conducted over an extended period.
• Drug release kinetics were analyzed to assess the impact of crosslinking and drug properties.

Main Results:

• Crosslinking chitosan resulted in a prolonged release of incorporated therapeutics.
• Sustained drug release was observed irrespective of the drug's hydrophilic nature.
• The biocompatibility of chitosan supports its use in drug delivery formulations.

Conclusions:

• Crosslinked chitosan serves as a viable and promising platform for prolonged drug delivery.
• While crosslinking generally enhances drug release duration, specific strategies may be needed for highly hydrophilic drugs to achieve optimal sustained release.
• Further research into tailored approaches for hydrophilic therapeutics is warranted.