New antibiotic-eluting mesh used for soft tissue reinforcement

Area of Science:

• Biomaterials Science
• Infectious Disease Research
• Surgical Innovation

Background:

• Post-operative infections are a significant complication of soft tissue repair using surgical prostheses.
• Current treatment for mesh-related infections involves mesh removal, highlighting the need for preventative strategies.

Purpose of the Study:

• To develop and evaluate a novel antibiotic-eluting mesh to mitigate post-operative infections.
• To assess the feasibility of coating existing polypropylene prostheses with an anti-infective agent.

Main Methods:

• Utilized airbrush spraying technology to apply a coating of poly(ε-caprolactone) (PCL) and ofloxacin onto polypropylene mesh.
• Investigated PCL as a degradable polymer for drug delivery, focusing on its coating properties and impact on mesh biomechanics.
• Assessed the in vitro antibacterial activity of the ofloxacin-eluting mesh against Escherichia coli, including adherence, biofilm formation, and zone of inhibition.

Main Results:

• Poly(ε-caprolactone) formed a homogeneous, smooth coating on polypropylene filaments without significantly altering biomechanical properties.
• The ofloxacin-eluting mesh demonstrated effective in vitro antibacterial activity, even at low drug concentrations.
• The coating provided a burst release followed by sustained diffusion of ofloxacin over several days.

Conclusions:

• Airbrush coating of ofloxacin-PCL on existing prostheses is a promising approach to reduce post-operative infections.
• Further in vivo studies are necessary to confirm the clinical effectiveness of this antibiotic-eluting mesh.
• This technology offers a potential solution to a significant complication in soft tissue repair.