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Ketorolac tromethamine liposomes: encapsulation and release studies
Barbara Ruozi1, Giovanni Tosi, Flavio Forni
1Department of Pharmaceutical Sciences, University of Modena and Reggio Emilia, Modena, Italy.
Journal of Liposome Research
|January 6, 2006
Summary
Cationic liposomes effectively encapsulate ketorolac tromethamine, enhancing drug content and controlling release. These liposomes show promise as drug carriers for improved therapeutic outcomes.
Area of Science:
- Pharmaceutical Sciences
- Materials Science
- Biotechnology
Background:
- Liposomes are versatile nanocarriers for drug delivery.
- Ketorolac tromethamine is a non-steroidal anti-inflammatory drug (NSAID) with analgesic properties.
- Controlled drug release is crucial for optimizing therapeutic efficacy and minimizing side effects.
Purpose of the Study:
- To prepare and characterize liposomes loaded with ketorolac tromethamine.
- To investigate the influence of lipid composition on encapsulation efficiency and vesicle properties.
- To evaluate the in vitro release profile of ketorolac tromethamine from cationic liposomes.
Main Methods:
- Thin-layer evaporation method for liposome preparation.
- Atomic Force Microscopy (AFM) and Transmission Electron Microscopy (TEM) for physical characterization.
- In vitro drug release studies to assess release kinetics.
Main Results:
- Liposome formulation significantly impacts ketorolac tromethamine encapsulation efficiency.
- Cationic liposomes, containing dimethyldioctadecylammonium bromide and N-[1-(2,3-dioleoyloxy)propyl]-N,N,N-trimethylammonium chloride with phosphatidylcholine, exhibited higher drug entrapment compared to other formulations.
- Vesicle size and lipid composition influenced drug release profiles.
Conclusions:
- Cationic liposomes demonstrate superior encapsulation of ketorolac tromethamine.
- These liposomes serve as effective carriers for controlled in vitro release of ketorolac tromethamine.
- The findings suggest potential for developing advanced drug delivery systems for NSAIDs.
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