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Updated: Jun 13, 2026
10:33
Generation of Alginate Microspheres for Biomedical Applications
Published on: August 12, 2012
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In Vitro Release Dynamics of Atorvastatin-Loaded Alginate Particles for Enhanced Periodontal Treatment
Imke Hlawa1, Thomas Reske2, Oleksandra Chabanovska1
1Department of Operative Dentistry and Periodontology, Rostock University Medical Center, 18057 Rostock, Germany.
Polymers
|February 13, 2025
Summary
New alginate microparticles, created using ultrasound, offer a stable, controlled delivery system for atorvastatin to treat periodontitis, potentially improving upon current methods.
Area of Science:
- Biomaterials Science
- Drug Delivery Systems
- Periodontal Therapeutics
Background:
- Periodontitis is a chronic inflammatory disease leading to tooth loss.
- Statins show promise as anti-inflammatory agents for periodontitis.
- Effective local drug delivery systems are needed for periodontal statin therapy.
Purpose of the Study:
- To develop and evaluate ultrasound-assisted alginate microparticles for localized atorvastatin delivery.
- To assess the stability and drug release characteristics of these microparticles compared to conventional hydrogels.
Main Methods:
- Atorvastatin was encapsulated into alginate microparticles (10-400 µm) using an ultrasound-assisted technique.
- Microparticles were incubated in artificial saliva at 37°C to simulate physiological conditions.
- Drug release was quantified using high-performance liquid chromatography; methylcellulose hydrogel served as a control.
Main Results:
- Alginate microparticles demonstrated a >10-fold increase in mean dissolution time versus methylcellulose, indicating enhanced stability.
- Increasing atorvastatin concentration prolonged the 50% drug release time (t50%) from 1 to 11 hours.
- Covalent cross-linking of alginate with divinyl sulfone further delayed initial drug release by 3 hours (p < 0.05).
Conclusions:
- Ultrasound-assisted fabrication is effective for producing stable alginate microparticles for drug delivery.
- These alginate microparticles offer a promising, biocompatible carrier for localized statin delivery in periodontal treatment.
- The developed system addresses the need for improved drug carriers in clinical dentistry.
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