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Erythromycin ethosomal systems: physicochemical characterization and enhanced antibacterial activity
1Department of Pharmaceutics, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, POB 12065, Jerusalem 91120, Israel.
Current Drug Delivery
|November 25, 2005
Summary
Erythromycin ethosomes effectively deliver antibacterial agents through skin barriers, significantly improving treatment outcomes for staphylococcal infections in vivo and in vitro.
Area of Science:
- Pharmaceutical Sciences
- Dermatology
- Microbiology
Background:
- Bacterial infections pose a significant health challenge, requiring effective drug delivery systems.
- Overcoming biological barriers like the stratum corneum is crucial for topical antibacterial efficacy.
Purpose of the Study:
- To design and characterize erythromycin ethosomes (EE) as a novel drug delivery system.
- To evaluate the in vitro and in vivo antibacterial efficiency of EE against Staphylococcus aureus.
Main Methods:
- Ethosomes were characterized using TEM, CLSM, DLS, and DSC.
- In vitro antibacterial activity was assessed via inhibition zones and Minimum Inhibitory Concentration (MIC).
- In vivo efficacy was evaluated on ICR mice models with S. aureus skin infections.
Main Results:
- Ethosomes successfully encapsulated erythromycin (78.6%) and were stable for one year.
- EE demonstrated enhanced antibacterial activity against S. aureus strains, including resistant ones, reducing MIC values.
- Topical application of EE in mice led to complete infection inhibition, unlike hydroethanolic solutions.
Conclusions:
- Ethosomes serve as efficient carriers for erythromycin delivery into deep skin layers.
- EE holds significant potential for eradicating staphylococcal infections through enhanced topical delivery.