alexa Hyaluronic acid as an internal phase additive to obtain ofloxacin PLGA microsphere by double emulsion method.
General Science

General Science

Journal of Biotechnology & Biomaterials

Author(s): Wu G, Chen L, Li H, Wang YJ

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Abstract Hyaluronic acid (HA) was used as an internal phase additive to improve the loading efficiency of ofloxacin, a hydrophilic drug encapsulated by hydrophobic polylactic-co-glycolic acid (PLGA) materials, through a double emulsion (water-in-oil-in-water) solvent extraction/evaporation method. Results from laser distribution analysis show that polyelectrolyte additives have low impact on the average particle size and distribution of the microspheres. The negatively charged HA increases the drug loading efficiency as well as the amount of HA in microspheres. Burst release can be observed in the groups with the polyelectrolyte additives. The release rate decreases with the amount of HA inside the microspheres in all negatively charged polyelectrolyte-added microsphere groups. This article was published in Biomed Mater Eng and referenced in Journal of Biotechnology & Biomaterials

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