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Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_10 | Pages 31 - 31
1 Oct 2022
v. Dijk B v. Duyvenbode FH de Vor L Nurmohamed FRHA Lam M Poot A Ramakers R Koustoulidou S Beekman F v. Strijp J Rooijakkers S Dadachova E Vogely HC Weinans H van der Wal BC
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Aim

Implant infections caused by Staphylococcus aureus are difficult to treat due to biofilm formation, which complicates surgical and antibiotic treatment. Herewith we introduce an alternative approach using monoclonal antibodies (mAbs) targeting S. aureus and provide the biodistribution and specificity in a mouse implant infection model.

Methods

4497-IgG1targeting S. aureus Wall Teichoic Acid was labeled to Indium-111 using “CHXA” as a chelator. SPECT-CT scans were performed at 24, 72 and 120 hours after administration in Balb/cAnNCrl mice with a subcutaneous implant pre-colonized with biofilm of S. aureus. Biodistribution over the various organs of this labelled antibody was visualized and quantified using SPECT-CT imaging and compared to uptake at the target tissue with implant infection.