Synthesis and Antimicrobial Activity of 3D Micro–Nanostructured Diatom Biosilica Coated by Epitaxially Growing Ag-AgCl Hybrid Nanoparticles DOI Creative Commons
Zhanar Bekissanova, Viorica Railean‐Plugaru,

Izabela Wojtczak

et al.

Biomimetics, Journal Year: 2023, Volume and Issue: 9(1), P. 5 - 5

Published: Dec. 23, 2023

The 3D (three-dimensional) micro–nanostructured diatom biosilica obtained from cultivated diatoms was used as a support to immobilize epitaxially growing AgCl-Ag hybrid nanoparticles ((Ag-AgCl)NPs) for the synthesis of nanocomposites with antimicrobial properties. prepared composites that contained grown (Ag-AgCl)NPs were investigated in terms their morphological and structural characteristics, elemental mineral composition, crystalline forms, zeta potential, photoluminescence properties using variety instrumental methods including SEM (scanning electron microscopy), TEM (transmission EDX (energy-dispersive X-ray spectroscopy), XRD (X-ray powder diffraction), zeta-potential measurement, spectroscopy. content (AgCl-Ag)NPs amounted 4.6 mg/g 8.4 AgClNPs/AgNPs ratios percentage 86/14 51/49, respectively. Hybrid evenly dispersed dominant size 5 25 nm composite an amount silver. average 7.5 nm; also, there 1–2 particles 20–40 nm. potential mechanism studied. MIC (the minimum inhibitory concentration method) approach investigate activity against microorganisms Klebsiella pneumoniae, Escherichia coli, Staphylococcus aureus. containing natural showed resistance bacterial strains American Type Cultures Collection clinical isolates (diabetic foot infection wound isolates).

Language: Английский

Hydrogel Assisted Synthesis of Polymeric Materials Based on Chitosan, Oxidized Pectin, and Tantalum MOF Nanostructures as Potent Antibiotic Agents Against Common Pathogenic Strains Between Humans and Aquatic DOI

F. Al-dolaimy,

Usama S. Altimari, Alzahraa S. Abdulwahid

et al.

Journal of Inorganic and Organometallic Polymers and Materials, Journal Year: 2023, Volume and Issue: 34(2), P. 874 - 884

Published: Sept. 27, 2023

Language: Английский

Citations

8
Sulfonyldibenzoate coordination polymers as bioactive dopants for polysaccharide films with antibacterial and antibiofilm properties DOI Creative Commons
Tiago A. Fernandes, Filipa Macedo,

Rafaela G. Cabral

et al.

RSC Applied Interfaces, Journal Year: 2023, Volume and Issue: 1(1), P. 98 - 109

Published: Nov. 2, 2023

Silver( i ) and copper( ii sulfonyldibenzoate coordination polymers were assembled applied as bioactive dopants for hybrid biopolymer films with remarkable antibacterial biofilm inhibition activity.

Language: Английский

Citations

2
Engineering of Brewery Waste-Derived Graphene Quantum Dots with Zno Nanoparticles for Treating Multi-Drug Resistant Bacterial Infections DOI

Lekshmi Chandran,

Agnieszka Krzemińska,

Sathyavathi Sudararaju

et al.

Published: Jan. 1, 2024

Multidrug-resistant microbial infections represent a serious hazard to human health and have proven difficult treat in clinical settings. In this study, the antibacterial efficiency of graphene quantum dots (GQDs) derived from brewery spent grain combination with zinc oxide (ZnO) nanoparticles against methicillin-resistant Staphylococcus aureus (MRSA) isolated wound specimens is investigated for first time. The crystallinity, d-spacing, π-π stacking nanomaterials were confirmed by X-ray diffraction analysis. underlying sheet-like morphology BSG-derived reduced (BrGO) was revealed using field emission scanning electron microscopy. Raman analysis evidenced an ID/IG ratio 0.95 BrGO, which indicates higher degree structural defects disorder, while ZnO/GQDs composite, blue shift E2H peak indicated decrease particle size strain crystal structure. high-resolution transmission microscopy used investigate layered structure average GQDs (27 nm). Interestingly, composites showed better activity compared individual ZnO, against, Escherichia coli, aureus. also demonstrated significant disinfecting MRSA (ATCC isolates specimens). Density functional theory (DFT) calculations substantial clustering groups at edges nanomaterial. disinfection mechanism elucidated time DFT calculations. Cytotoxicity experiments 3T3 mouse embryo fibroblasts testified that are not toxic mammalian cells concentrations up 50 ug/mL.

Language: Английский

Citations

0
Synergistic Antibacterial Effect of Antimicrobial Peptides and Cus-Loaded Zif-8 Nanoparticles with Photothermal Therapy DOI
Duoduo Zhang,

S. De Bie,

Mhd Anas Tomeh

et al.

Published: Jan. 1, 2024

Antimicrobial resistance (AMR) has emerged as a significant threat to human health. peptides (AMPs) have proven be an effective strategy against antibiotic-resistant bacteria, given their capacity swiftly disrupt microorganism membranes and alter cell morphology. However, common limitation lies in the inherent toxicity of many AMPs vulnerability protease degradation within body. Photothermal therapy (PTT) stands out widely utilized approach combating bacterial infections, boasting high efficiency non-invasive benefits. To enhance stability antibacterial efficacy AMPs, novel involving combination PTT been proposed. This study focuses on encapsulation At10, new type AMP designed by our group, copper sulfide nanoparticles (CuS NPs) zeolitic imidazolate framework-8 (ZIF-8) form At10/CuS@ZIF-8 nanoparticles. The encapsulated CuS NPs exhibit notable photothermal properties upon exposure near-infrared radiation. induces cleavage ZIF-8, facilitating release which effectively targets exert its effects. Bacteria treated with light radiation exhibited not only membrane folding intracellular matrix outflow but also fracture. synergistic strategy, integrating unique NPs, pH responsiveness holds promising potential for widespread application treatment infections.

Language: Английский

Citations

0
Synthesis and Antimicrobial Activity of 3D Micro–Nanostructured Diatom Biosilica Coated by Epitaxially Growing Ag-AgCl Hybrid Nanoparticles DOI Creative Commons
Zhanar Bekissanova, Viorica Railean‐Plugaru,

Izabela Wojtczak

et al.

Biomimetics, Journal Year: 2023, Volume and Issue: 9(1), P. 5 - 5

Published: Dec. 23, 2023

The 3D (three-dimensional) micro–nanostructured diatom biosilica obtained from cultivated diatoms was used as a support to immobilize epitaxially growing AgCl-Ag hybrid nanoparticles ((Ag-AgCl)NPs) for the synthesis of nanocomposites with antimicrobial properties. prepared composites that contained grown (Ag-AgCl)NPs were investigated in terms their morphological and structural characteristics, elemental mineral composition, crystalline forms, zeta potential, photoluminescence properties using variety instrumental methods including SEM (scanning electron microscopy), TEM (transmission EDX (energy-dispersive X-ray spectroscopy), XRD (X-ray powder diffraction), zeta-potential measurement, spectroscopy. content (AgCl-Ag)NPs amounted 4.6 mg/g 8.4 AgClNPs/AgNPs ratios percentage 86/14 51/49, respectively. Hybrid evenly dispersed dominant size 5 25 nm composite an amount silver. average 7.5 nm; also, there 1–2 particles 20–40 nm. potential mechanism studied. MIC (the minimum inhibitory concentration method) approach investigate activity against microorganisms Klebsiella pneumoniae, Escherichia coli, Staphylococcus aureus. containing natural showed resistance bacterial strains American Type Cultures Collection clinical isolates (diabetic foot infection wound isolates).

Language: Английский

Citations

1