Investigate the Prevalence & Mechanisms of Biofilm Formation in Indwelling devices (e.g., catheters, prosthetics) & its Role in Persistent Infection and the Efficacy of Novel Anti-Biofilm Strategies or Coatings

Abstract

Objective: To evaluate the biofilm formation by Staphylococcus aureus along with Pseudomonas aeruginosa on sili-cone and polyurethane surfaces as well as to evaluate the antimicrobial efficacy of polymer-based coatings in reducing biofilm adherence and associated complications.
Methodology: For research we used in vitro model to investigate biofilm formation by S. aureus and P. aeruginosa on silicone and polyurethane surfaces. The reduction of bacterial adhesion, extracellular polymeric substances (EPS) pro-duction and the total biofilm density was evaluated for polymer-based antimicrobial coatings. We performed microscopic analysis along with viability testing to confirm the results.
Results: The results were very different after using these coatings. P. aeruginosa made more biofilms than S. aureus, and silicone surfaces kept biofilms with high biomass levels. Polymer-based antimicrobial coatings worked very well to stop biofilm from forming and sticking. Microscopic analysis and viability assessment verified a substantial reduction in biofilm density on coated surfaces. The coatings also made it harder for bacteria to stick to surfaces and made less EPS.
Conclusion: The results show how important it is to have better material engineering and polymer-based antimicrobial coatings to reduce infections related to biofilms in medical implants. Future studies should focus on improving the formu-lation of the coatings and evaluate extended use of antibiotics in clinical settings. Sophisticated preventive mechanisms could help to increase the service life and safety of in-vivo medical implants.
Keywords: bacterial adhesion, biofilm, indwelling devices, catheter infections, and antimicrobial coatings.