Preparation and Optimization of Vancomycin hydrochloride Encapsulated Multivesicular Liposomes for Sustained Locoregional Delivery
International Pharmacy Acta,
Vol. 4 No. 1 (2021),
2 June 2021
Osteomyelitis is a destructive inflammatory condition of the bone that is usually caused by a wide range of microorganisms especially Staphylococcus aureus. Considering the downsides of systemic antibiotic therapies as well as conventional local drug delivery systems such as using polymethylmethacrylate, this study aimed to develop, characterize and optimize vancomycin hydrochloride loaded multivesicular liposomes (MVLs) as a proper therapeutic option for the treatment of osteomyelitis.
Methods and Results:
A 23 full factorial design technique was applied to determine the effects of three variables (lipid to drug ratio, triolein content and cholesterol to phospholipid ratio) on the encapsulation efficiency and release profile of vancomycin hydrochloride loaded MVLs to optimize the final formulation. Further characterization was performed on the optimized formula by evaluating the morphology, size and storage stability. The average drug encapsulation efficiency and the mean diameter of the optimized formulation was 54.7 ± 0.3% and 9.019 ± 0.26 µm, respectively with a span value of 0.188. Additionally, the spherical and multivesicular nature of MVLs was visible using optical microscopy (x400). The optimized formula showed an in vitro sustained release characteristic with proper stability and insignificant change in size, morphology and EE% for 30 days at 4°C.
This study suggests that vancomycin hydrochloride loaded MVLs might have the potential to be used in the treatment of chronic osteomyelitis as a biocompatible drug carrier with a high antibiotic entrapment capacity as well as controlled drug release.
- Vancomycin hydrochloride; Multivesicular liposomes; Osteomyelitis; Sustained release; Factorial design.
How to Cite
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