Polydopamine/graphene oxide coatings loaded with tetracycline and green Ag nanoparticles for effective prevention of biofilms
Journal article, 2023

Bacterial adhesion and biofilm formation are significant challenges for medical devices and implants. Surface modification to alter the surface properties of biomedical device surfaces to prevent the biofilm formation is an important driving force for the development of anti-biofilm coatings. Here, a simple and feasible method to fabricate antibacterial coatings that combines the adhesion properties of polydopamine (PDA) and the high drug loading capacity of graphene oxide (GO). Tetracycline and green-synthesized silver nanoparticles were successfully assembled onto the coating surface, endowing the coating an anti-biofilm effect and exhibit strong inhibitory effect on S. aureus and E. coli biofilms by a factor of more than 1000 (3 log10 units). Kirby-Bauer diffusion test, colony forming unit (CFU) counts, biofilm topography studies and live/dead staining were used to evaluate the antibacterial activity of the coatings. This study is proposed that PDA/GO coatings loaded with antibiotics or silver nanoparticles can be used as a potential approach to prevent infection associated with implantable biomedical devices.

Graphene oxide

Antibiofilm coatings

Tetracycline

Ag nanoparticles

Polydopamine

Author

Jian Zhang

Chalmers, Life Sciences, Systems and Synthetic Biology

Priyanka Singh

Technical University of Denmark (DTU)

Zhejian Cao

Chalmers, Life Sciences, Systems and Synthetic Biology

Shadi Rahimi

Chalmers, Life Sciences, Systems and Synthetic Biology

Santosh Pandit

Chalmers, Life Sciences, Systems and Synthetic Biology

Ivan Mijakovic

Chalmers, Life Sciences, Systems and Synthetic Biology

Technical University of Denmark (DTU)

Applied Surface Science

0169-4332 (ISSN)

Vol. 626 157221

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Subject Categories

Materials Chemistry

Other Chemistry Topics

Medical Materials

DOI

10.1016/j.apsusc.2023.157221

More information

Latest update

7/28/2023