Journal
ACS APPLIED BIO MATERIALS
Volume 4, Issue 1, Pages 559-570Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsabm.0c01125
Keywords
magnetoelectric; electroactive environment; nanocomposites; antimicrobial materials on demand; magnetic bioreactor
Funding
- FCT-Fundacao para a Ciencia e Tecnologia [UID/FIS/04650/2019 2020, UID/BIO/04469/2019, PTDC/BTM-MAT/28237/2017, PTDC/EMD-EMD/28159/2017]
- FCT [SFRH/BPD/121464/2016, SFRH/BPD/121526/2016]
- Stimulus of Scientific Employment, Individual Support [CEECIND/03975/2017]
- Spanish State Research Agency (AEI)
- European Regional Development Fund (ERFD) [PID2019-106099RBC43/AEI/10.13039/501100011033]
- Basque Government Industry and Education Department [PIBA-2018-06]
- Spanish Ministry of Economy, Industry and Competitiveness (MINECO) [MAT2016-76824-C3-1-R]
- Regional Government of Madrid [S2018/NMT-4321]
- Fundação para a Ciência e a Tecnologia [UID/BIO/04469/2019] Funding Source: FCT
Ask authors/readers for more resources
The emergence of antimicrobial resistance is a significant public health issue, prompting the urgent need for advanced antimicrobial strategies. In this study, nanocomposite films incorporating nickel nanowires were developed to enhance antimicrobial activity through magnetic stimulation. Results showed that dynamic magnetic conditions significantly improved bacterial growth inhibition compared to static conditions, demonstrating the potential of materials to enhance antimicrobial activity on demand.
The emergence of antimicrobial resistance is considered a public health problem due to the overuse and misuse of antibiotics which are losing efficacy toward an increasing number of microorganisms. Advanced antimicrobial strategies via development of alternative drugs and materials able to control microbial infections, especially in clinical settings, are urgently needed. In this work, nanocomposite films were developed from the piezoelectric polyvinylidene fluoride (PVDF) polymer, filled with nickel nanowires (NiNws) in an attempt to control and enhance the antimicrobial activity of the materials via applying a magnetic stimulus. The material was achieved through crystallization of PVDF in the electroactive beta-phase upon incorporation of anisotropic and negatively charged NiNws in the polymeric matrix at a concentration of 1.5 wt %. The nanocomposites have shown to possess certain antimicrobial properties, which could be considerably boosted through the application of a magnetic field. In fact, more than 55% of bacterial growth inhibition was obtained by employing controlled dynamic magnetic conditions for representative Gram-positive and Gram-negative bacteria, compared to only 25% inhibition obtained under static conditions, i.e., without magnetic stimuli application, with the antibiofilm activity dearly improved as well upon dynamic conditions. This work demonstrates a proof-of-concept for materials able to boost on demand their antimicrobial activity and opens the room for applications in novel medical devices with improved control of healthcare-associated infections.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available