Questioning ZnO, Ag, and Ag/ZnO nanoparticles as antimicrobial agents for textiles: Do they guarantee total protection against bacteria and SARS-CoV-2?

Silva, Daniel José da; Duran, Adriana Feliciano Alves; Cabral, Aline Diniz; Fonseca, Fernando L. A.; Bueno, Rodrigo F.; Rosa, Derval S.

doi:10.1016/j.jphotobiol.2022.112538

Cited by 15 publications

(9 citation statements)

References 45 publications

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“…In this sense, metal oxide nanoparticles have been generating great interest in the scientific community because they are considered non-toxic and of low cost, besides being versatile to be designed in various types of nanostructures, not being alien to the zinc oxide nanoparticles (ZnO NP) [ 1 , 2 ], where diversity of applications are being explored due to their photocatalytic properties, in photo-electronics, photovoltaic cells and sensors [ 3 ], besides being biodegradable and having the capacity to be absorbed by the body because they can be dissolved in ions, becoming elements applied to the nutritional cycle, as well as being applied in in-vivo bio-detection, although there are still many questions to address and investigate about biodegradability and the consequences on the nutritional cycle [ 4 ]. Thus, and considering the intrahospital contamination at the level of bacteria, fungi, and viruses, research is being carried out on the application of ZnO NPs in different formats, being textile impregnation the most developed because they would prevent the transmission of dangerous pathogens that remain on textile surfaces for long periods [ 5 ]. On the other hand, it is important to consider the method of synthesis of nanomaterials since the management of morphology, size, and colloidal mono-dispersity will depend on it, and from this, new properties will be obtained.…”

Section: Introductionmentioning

confidence: 99%

Enhanced antimicrobial efficacy of biogenic ZnO nanoparticles through UV-B activation: A novel approach for textile garment

Asmat-Campos,

Rojas-Jaimes,

Simbrón de la Cruz

et al. 2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

Enhanced antimicrobial efficacy of biogenic ZnO nanoparticles through UV-B activation: A novel approach for textile garment

Asmat-Campos,

Rojas-Jaimes,

Simbrón de la Cruz

et al. 2024

Heliyon

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“…Nearly 1800 commercial healthcare nanomaterial products like skin creams and band-aids are already available on the market [ 18 , 19 ]. To date, tremendous techniques have been employed for preparing nanomaterials [ 20 , 21 ]. Chemical techniques, in particular, are scalable, affordable, and controllable options.…”

Section: Introductionmentioning

confidence: 99%

Zinc Oxide and Magnesium-Doped Zinc Oxide Nanoparticles Ameliorate Murine Chronic Toxoplasmosis

Sarhan,

Felemban,

Alelwani

et al. 2024

Pharmaceuticals

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Toxoplasma gondii causes a global parasitic disease. Therapeutic options for eradicating toxoplasmosis are limited. In this study, ZnO and Mg-doped ZnO NPs were prepared, and their structural and morphological chrematistics were investigated. The XRD pattern revealed that Mg-doped ZnO NPs have weak crystallinity and a small crystallite size. FTIR and XPS analyses confirmed the integration of Mg ions into the ZnO framework, producing the high-purity Mg-doped ZnO nanocomposite. TEM micrographs determined the particle size of un-doped ZnO in the range of 29 nm, reduced to 23 nm with Mg2+ replacements. ZnO and Mg-doped ZnO NPs significantly decreased the number of brain cysts (p < 0.05) by 29.30% and 35.08%, respectively, compared to the infected untreated group. The administration of ZnO and Mg-doped ZnO NPs revealed a marked histopathological improvement in the brain, liver, and spleen. Furthermore, ZnO and Mg-doped ZnO NPs reduced P53 expression in the cerebral tissue while inducing CD31 expression, which indicated a protective effect against the infection-induced apoptosis and the restoration of balance between free radicals and antioxidant defense activity. In conclusion, the study proved these nanoparticles have antiparasitic, antiapoptotic, and angiogenetic effects. Being nontoxic compounds, these nanoparticles could be promising adjuvants in treating chronic toxoplasmosis.

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“…Recently, cotton fabrics modified with Ag, ZnO, and Ag/ZnO NPs were developed, and their bactericidal activity against Escherichia coli and Staphylococcus aureus , photocatalytic activity, and antiviral activity against Delta SARS-CoV-2 were tested. These fabrics showed antimicrobial properties against both bacteria, but they reduced only part of the SARS-CoV-2 virions during the first 15 min of direct contact and caused damage only to the biological structures on the viral surface particle, while the viral RNA remained intact [ 64 ].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and Antifungal Properties of Polyester, Polylactide, and Cotton Nonwovens and Fabrics, by Means of Stable Aqueous Dispersions Containing Copper Silicate and Some Metal Oxides

et al. 2023

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Literature reviews have described the applications of silver, copper, and zinc ions and metallic particles of Cu, Ti, and Zn oxides, which have been found to be useful antimicrobial reagents for the biofunctionalization of various materials and their surfaces. For this purpose, compositions of water dispersions containing emulsions of synthetic copolymers based on acrylic and vinyl monomers, polysaccharides (hydroxyethyl cellulose and starch), and various additives with wetting and stabilizing properties were used. Many stable water dispersions of different chemical compositions containing bioactive chemical compounds (copper silicate hydrate, titanium dioxide, and zinc oxide (and other auxiliary substances)) were developed. They were used for the preparation of thin hybrid coatings having good antimicrobial properties against Gram-negative bacteria (Escherichia coli), Gram-positive bacteria (Staphylococcus aureus), and yeast fungus (Candida albicans). Polyester (PES) and polylactide (PLA) nonwovens were modified using the dip-coating method, while PES and cotton fabrics were biofunctionalized by means of dip-coating and coating methods. The antimicrobial (antibacterial and antifungal) properties of the textile materials (nonwovens and fabrics) biofunctionalized with the above-mentioned bioactive agents exhibiting antimicrobial properties (CuSiO3, TiO2, ZnO, or ZnO∙SiO2) were strongly dependent on the agents’ content in the water dispersions. The PES and PLA nonwovens, modified on the surface with water compositions containing copper silicate hydrate, showed good antibacterial properties against the Gram-negative bacteria Escherichia coli, even at a content of 1 wt.% CuSiO3∙xH2O, and against the Gram-positive bacteria Staphylococcus aureus, at the content of at least 5 wt.% CuSiO3∙xH2O. The bacterial growth reduction factor (R) was greater than 99% for most of the samples tested. Good antifungal properties against the fungus Candida albicans were found for the PES and PLA nonwoven fabrics modified with dispersions containing 5–7 wt.% CuSiO3∙xH2O and 4.2–5.0 wt.% TiO2. The addition of TiO2 led to a significant improvement in the antifungal properties of the PES and PLA nonwovens modified in this way. For the samples of PES WIFP-270 and FS F-5 nonwovens, modified with water dispersions containing 5.0 wt.% CuSiO3∙xH2O and 4.2–5.0 wt.% TiO2, the growth reduction factor for the fungus Candida albicans (R) reached values in the range of 80.9–98.0%. These new biofunctionalized polymeric nonwoven textile materials can find practical applications in the manufacture of filters for hospital air-conditioning systems and for the automotive industry, as well as in air purification devices. Moreover, similar antimicrobial modification of fabrics with the dip-coating or coating methods can be applied, for example, in the fabrication of fungi- and mold-resistant garden furniture.

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Questioning ZnO, Ag, and Ag/ZnO nanoparticles as antimicrobial agents for textiles: Do they guarantee total protection against bacteria and SARS-CoV-2?

Cited by 15 publications

References 45 publications

Enhanced antimicrobial efficacy of biogenic ZnO nanoparticles through UV-B activation: A novel approach for textile garment

Enhanced antimicrobial efficacy of biogenic ZnO nanoparticles through UV-B activation: A novel approach for textile garment

Zinc Oxide and Magnesium-Doped Zinc Oxide Nanoparticles Ameliorate Murine Chronic Toxoplasmosis

Antibacterial and Antifungal Properties of Polyester, Polylactide, and Cotton Nonwovens and Fabrics, by Means of Stable Aqueous Dispersions Containing Copper Silicate and Some Metal Oxides

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