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Gentamicin-loaded silk/nanosilver composite scaffolds for MRSA-induced chronic osteomyelitis
Peng Zhang1, Jianzhong Qin1, Bo Zhang2
1Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Suzhou 215004, People's Republic of China.
Abstract:
Methicillin-resistant Staphylococcus aureus (MRSA) often induces chronic osteomyelitis and then bone defects. Here, gentamicin-loaded silk/nanosilver composite scaffolds were developed to treat MRSA-induced chronic osteomyelitis. AgNO3 was reduced with silk as a reducing agent in formic acid, forming silver nanoparticles in situ that were distributed uniformly in the composite scaffolds. Superior antibacterial properties against MRSA were achieved for the composite scaffolds, without the compromise of osteogenesis capacity. Then gentamicin was loaded on the scaffolds for better treatment of osteomyelitis. In vivo results showed effective inhibition of the growth of MRSA bacteria, confirming the promising future in the treatment of chronic osteomyelitis.
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