Bimetallic Nanoparticles for Antimicrobial Applications

Arora, Naman; Kavitha, Thangavelu; Karanikolos, Georgios N.

doi:10.3389/fchem.2020.00412

Cited by 137 publications

(69 citation statements)

References 123 publications

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“…The antimicrobial activity of bimetallic NPs has been assessed against numerous types of pathogenic bacteria, especially E. coli, P. aeruginosa, and S. mutans, which are mainly responsible for human epidemics. Bimetallic NPs exhibit remarkable performance compared with commonly used antibiotics and other antimicrobial treatments, as pathogens cannot develop resistance to them because they suppress the generation of biofilms and accelerate other correlated processes [62].…”

Section: Bimetallic Npsmentioning

confidence: 99%

Multimetallic Nanoparticles as Alternative Antimicrobial Agents: Challenges and Perspectives

Basavegowda

Baek

2021

Molecules

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Recently, infectious diseases caused by bacterial pathogens have become a major cause of morbidity and mortality globally due to their resistance to multiple antibiotics. This has triggered initiatives to develop novel, alternative antimicrobial materials, which solve the issue of infection with multidrug-resistant bacteria. Nanotechnology using nanoscale materials, especially multimetallic nanoparticles (NPs), has attracted interest because of the favorable physicochemical properties of these materials, including antibacterial properties and excellent biocompatibility. Multimetallic NPs, particularly those formed by more than two metals, exhibit rich electronic, optical, and magnetic properties. Multimetallic NP properties, including size and shape, zeta potential, and large surface area, facilitate their efficient interaction with bacterial cell membranes, thereby inducing disruption, reactive oxygen species production, protein dysfunction, DNA damage, and killing potentiated by the host’s immune system. In this review, we summarize research progress on the synergistic effect of multimetallic NPs as alternative antimicrobial agents for treating severe bacterial infections. We highlight recent promising innovations of multimetallic NPs that help overcome antimicrobial resistance. These include insights into their properties, mode of action, the development of synthetic methods, and combinatorial therapies using bi- and trimetallic NPs with other existing antimicrobial agents.

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Section: Bimetallic Npsmentioning

confidence: 99%

Multimetallic Nanoparticles as Alternative Antimicrobial Agents: Challenges and Perspectives

Basavegowda

Baek

2021

Molecules

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“…Noble metal NPs, such as silver (Ag) and gold (Au), have been shown to exhibit strong and sustainable antibacterial action against a wide array of microorganisms; therefore, they have been utilized in medical devices, food preservatives, dental resin composites, cosmetics, medical device coatings, implants, and medical instruments 4 . Bimetallic NPs have gained specific attention in the last decade due to their optical, electronic, magnetic, and catalytic properties, which, in most cases, are significantly distinct from their monometallic counterparts 4 . Bimetallic NPs are synthesized by combining two different metal elements, resulting in various morphologies and structures 5 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and design of Ag–Fe bimetallic nanoparticles as antimicrobial synergistic combination therapies against clinically relevant pathogens

Padilla-Cruz

Garza-Cervantes

Vasto-Anzaldo

et al. 2021

Sci Rep

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The inappropriate use of antibiotics and the inadequate control of infections have led to the emergence of drug-resistant strains. In recent years, metallo-pharmaceutics and metallic nanoparticles have been proposed as potential alternative antimicrobials due to their broad-spectrum antimicrobial properties. Moreover, recent findings have shown that combinations of transition metal compounds can exhibit synergistic antimicrobial properties. Therefore, the synthesis and design of bimetallic nanoparticles is a field worth exploring to harness the interactions between groups of metals and organic complex structures found in different microbial targets, towards the development of more efficient combinatorial antimicrobials composed of synergistic metals. In this study, we present a green synthesis of Ag–Fe bimetallic nanoparticles using an aqueous extract from the leaves of Gardenia jasminoides. The characterization of the nanoparticles demonstrated that the synthesis methodology produces homogenously distributed core–shell Ag–Fe structures with spherical shapes and average diameter sizes of 13 nm (± 6.3 nm). The Ag–Fe bimetallic nanoparticles showed magnetic and antimicrobial properties; the latter were evaluated against six different, clinically relevant multi-drug-resistant microbial strains. The Ag–Fe bimetallic nanoparticles exhibited an antimicrobial (bactericidal) synergistic effect between the two metals composing the bimetallic nanoparticles compared to the effects of the mono-metallic nanoparticles against yeast and both Gram-positive and Gram-negative multidrug-resistant bacteria. Our results provide insight towards the design of bimetallic nanoparticles, synthesized through green chemistry methodologies, to develop synergistic combinatorial antimicrobials with possible applications in both industrial processes and the treatment of infections caused by clinically relevant drug-resistant strains.

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“…The synergism plays a significant role in the enhanced antimicrobial efficiencies of multi-metallic nanoparticles surpassing monometallic counterparts because of the integration of different metals [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. In recent times, a detailed study has been carried out on the synergistic effect of bimetallic nanoparticles against bacteria and yeast species with characteristic Minimum Inhibitory Concentration (MIC) values [ 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Facile Bio-Fabrication of Ag-Cu-Co Trimetallic Nanoparticles and Its Fungicidal Activity against Candida auris

Kamli

Srivastava

Hajrah

et al. 2021

JoF

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Candida auris is an emergent multidrug-resistant pathogen that can lead to severe bloodstream infections associated with high mortality rates, especially in hospitalized individuals suffering from serious medical problems. As Candida auris is often multidrug-resistant, there is a persistent demand for new antimycotic drugs with novel antifungal action mechanisms. Here, we reported the facile, one-pot, one-step biosynthesis of biologically active Ag-Cu-Co trimetallic nanoparticles using the aqueous extract of Salvia officinalis rich in polyphenols and flavonoids. These medicinally important phytochemicals act as a reducing agent and stabilize/capping in the nanoparticles’ fabrication process. Fourier Transform-Infrared, Scanning electron microscopy, Transmission Electron Microscopy, Energy dispersive X-Ray, X-ray powder diffraction and Thermogravimetric analysis (TGA) measurements were used to classify the as-synthesized nanoparticles. Moreover, we evaluated the antifungal mechanism of as-synthesized nanoparticles against different clinical isolates of C. auris. The minimum inhibitory concentrations and minimum fungicidal concentrations ranged from 0.39–0.78 μg/mL and 0.78–1.56 μg/mL. Cell count and viability assay further validated the fungicidal potential of Ag-Cu-Co trimetallic nanoparticles. The comprehensive analysis showed that these trimetallic nanoparticles could induce apoptosis and G2/M phase cell cycle arrest in C. auris. Furthermore, Ag-Cu-Co trimetallic nanoparticles exhibit enhanced antimicrobial properties compared to their monometallic counterparts attributed to the synergistic effect of Ag, Cu and Co present in the as-synthesized nanoparticles. Therefore, the present study suggests that the Ag-Cu-Co trimetallic nanoparticles hold the capacity to be a lead for antifungal drug development against C. auris infections.

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Bimetallic Nanoparticles for Antimicrobial Applications

Cited by 137 publications

References 123 publications

Multimetallic Nanoparticles as Alternative Antimicrobial Agents: Challenges and Perspectives

Multimetallic Nanoparticles as Alternative Antimicrobial Agents: Challenges and Perspectives

Synthesis and design of Ag–Fe bimetallic nanoparticles as antimicrobial synergistic combination therapies against clinically relevant pathogens

Facile Bio-Fabrication of Ag-Cu-Co Trimetallic Nanoparticles and Its Fungicidal Activity against Candida auris

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