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  • Title: Preparation and characterisation of vancomycin-impregnated gelatin microspheres/silk fibroin scaffold.
    Author: Lan Y, Li W, Guo R, Zhang Y, Xue W, Zhang Y.
    Journal: J Biomater Sci Polym Ed; 2014; 25(1):75-87. PubMed ID: 24053472.
    Abstract:
    A type of antibacterial silk fibroin (SF) scaffold was developed and characterised as a potential functional wound dressing for acute trauma treatment. To achieve this, SF solution was mixed with previously fabricated vancomycin (Vm)-loaded gelatin (G) microspheres, followed by a freeze-drying step. Some physical and antimicrobial properties of the prepared Vm/G/SF scaffolds were investigated and the results demonstrated that the average pore size and porosity of the composite scaffold were 60-80 μm and 75%, respectively. The compressive stress and compressive modulus of Vm/G/SF scaffold were 140 and 468 KPa, respectively. Compared with Vm/G microspheres and Vm/SF scaffold, the Vm/G/SF scaffold has slower release rate of Vm. In addition, the Vm release rate of Vm/G/SF scaffold matched well with the degradation rate of SF scaffold. With respect to the antimicrobial effect, the results showed that the Vm/G/SF scaffold had good antimicrobial activity against Staphylococcus aureus (gram-positive), which is a gram-positive bacteria commonly found in infected wounds.
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