Interpenetrated Polymer Network Systems (PEG/PNIPAAm) Using Gamma Irradiation: Biological Evaluation for Potential...

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Medical Device Technology

Background:

• The rise of antimicrobial resistance (AMR) necessitates novel strategies to prevent device-associated infections.
• Current treatments often rely on antibiotics, contributing to AMR and potential patient side effects.
• Developing effective, drug-free antimicrobial and antibiofouling materials is crucial for biomedical applications.

Purpose of the Study:

• To investigate the antimicrobial and antibiofouling potential of synthesized PEG/NiPAAm interpenetrated polymer networks (IPNs).
• To evaluate the biocompatibility and mechanical properties of these IPNs for medical device applications.
• To offer a drug-free alternative for preventing bacterial colonization and infections in medical settings.

Main Methods:

• Synthesis and characterization of PEG/NiPAAm interpenetrated polymer networks (IPNs).
• Evaluation of IPN cytocompatibility using BALB/3T3 murine fibroblast cells.
• Assessment of albumin adsorption to determine antifouling properties.
• Bacterial inhibition tests against common pathogens (E. coli, S. aureus, S. epidermidis).
• Mechanical testing for resistance to medical/surgical manipulation.

Main Results:

• IPNs demonstrated excellent cytocompatibility, with cell viability ranging from 90-98%.
• Minimal albumin adsorption (<0% change) indicated significant antibiofouling potential.
• Effective inhibition of bacterial growth (E. coli, S. aureus, S. epidermidis) was observed after 48 hours.
• Mechanical properties were suitable for medical/surgical handling.

Conclusions:

• PEG/NiPAAm IPNs exhibit promising antimicrobial, antibiofouling, and biocompatible properties.
• These materials present a viable, drug-free option for antifouling coatings on medical devices.
• The findings support the potential application of these IPNs in combating AMR and improving patient safety.