Surface-Functionalised Copper Oxide Nanoparticles: A Pathway to Multidrug-Resistant Pathogen Control in Medical...

Area of Science:

• Materials Science
• Nanotechnology
• Biomedical Engineering

Background:

• Antibiotic resistance is a growing global health threat.
• Copper oxide nanoparticles (CuONPs) show potential as antimicrobial agents.
• Medical devices require effective antimicrobial surfaces to prevent infections.

Purpose of the Study:

• To synthesize and characterize glutamic acid-coated copper oxide nanoparticles (GA-CuONPs).
• To functionalize medical-grade silicone tubing with GA-CuONPs.
• To evaluate the antimicrobial efficacy and biocompatibility of the coated silicone.

Main Methods:

• Synthesis of GA-CuONPs using glutamic acid.
• Functionalization of silicone tubing with GA-CuONPs via an oxysilane bonding agent.
• Antimicrobial testing against Gram-positive and Gram-negative bacteria, including multidrug-resistant strains.
• Cytotoxicity assays using human cells.
• Adherence and leaching tests.

Main Results:

• GA-CuONPs exhibited significant antimicrobial activity against a broad spectrum of bacteria.
• The GA-CuONP coating demonstrated no toxicity to human cells.
• The coating showed stable adherence to silicone tubing without leaching.
• Effective functionalization was achieved using the oxysilane bonding agent.

Conclusions:

• GA-CuONP coatings offer a promising strategy for enhancing the antimicrobial properties of medical devices.
• This method provides a versatile approach for both manufacturing and ad hoc modification of medical equipment.
• The developed coating addresses the critical need for solutions against antibiotic-resistant pathogens.