Payments from Asia and South East Asia and Africa. In addition, a time and dose dependence of the embryotoxic response was observed . Antiviral properties: Silver nanoparticles Properties (diameter 5-20 nm, average diameter ~10 nm) inhibit HIV-1 virus replication. Incubation for 24 h of morula stage embryos with silver NPs impaired their ability to reach the blastocyst stage, increased the percentage of apoptotic cells and reduced ability to undergo in vitro outgrowth. Nancy A. Monteiro-Riviere, Francesca Larese Filon, in, Adverse Effects of Engineered Nanomaterials, Nanostructures for drug delivery: pharmacokinetic and toxicological aspects, Adrian G. Ciucă, ... Ecaterina Andronescu, in, Encyclopedia of Food Microbiology (Second Edition), Karin Sørig Hougaard, Luisa Campagnolo, in, μM silver NPs were transferred to the uterus of pseudo-pregnant females, implantation success was significantly decreased compared to non-exposed blastocysts. Based on their good antimicrobial function and nontoxicity, silver nanoparticles have been used as an effective topical application for improving wound healing.
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Silver NPS up-regulated the P38 MAPK/p53-mitochondrial caspase-3 pathway in lung cancer cell line A549 and induced cell apoptosis, and NPs synthesized from Melia dubia leaf were cytotoxic to human breast cancer cell line KB (Castro-Aceituno, Ahn, et al., 2016; Kathiravan, Ravi, et al., 2014; Sankar, Karthik, et al., 2013). AgNPs play an important role in … Conjugated Silver nanoparticles with heparin derivative (glucose or DAPHP) at a concentration of 10 μg/CAM have no lethal effects when compared to unconjugated silver nanoparticles. Adrian G. Ciucă, ... Ecaterina Andronescu, in Nanostructures for Drug Delivery, 2017.
Several data are available on the effect of silver NPs on embryonic development of other aquatic species [42–44].
Nanocomposite materials are structures made up of nanoparticles with dimensions below 100 nm diffused in a polymeric matrix. NPs synthesized from aqueous rhizome extract of Acorus calamus reduced the viability of Hep2, COLO205 and SH-sy5y and up-regulated apoptosis in Hep2 cell lines, and in in-vivo toxicity studies revealed that male Wistar rats treated with silver nanoparticles at 5 mg/kg did not alter any serum biochemical markers but a twofold increase in concentration alters biochemical properties of TNF-α and IL-6 cytokine levels for up to 29 days and after 84 days complete elimination of silver from the rats was observed (Nakkala, Mata, et al., 2018).
prepared polyvinylpyrrolidone (PVP) coated silver nanoparticles with a size of approximately 2–3 nm inducing the formation of thicker blood vessels at concentrations of 0.5, 1, 5, 10, 20 μg/mL when compared to untreated blood vessels.
doi: 10.1021/nl0155274. Chauret, in Encyclopedia of Food Microbiology (Second Edition), 2014. These factors affect the chemical reactivity of materials as well as their mechanical, optical, electric, and magnetic properties.
The strong inhibitory action of nanosilver was also observed after 60 h of contact. In animal models, nanosilver alters the expression of matrix metallo-proteinases (proteolytic enzymes that are important in various inflammatory and repair processes) , suppresses the expression of tumor necrosis factor (TNF)- , interleukin (IL)-12, and IL-1 , and induces apoptosis of inflammatory cells (Bhol & Schechter, 2005, 2007). The results showed that the penetration of silver nanoparticles was restricted to the reticular dermis of intact human skin, and large aggregates of silver (up to 750 nm) could be observed below the epidermis without affecting the concentration of silver ions in the circulation . More research is needed to assess the potential of nanoparticles for the food industry. Silver NPs at 500 nm decreased 50% viability through apoptosis of Dalton's lymphoma ascites (DLA) cells at a concentration of 500 nM (Sriram, Kanth, et al., 2010).
Also in in-vitro, silver nanoparticles at 400 μg/mL completely inhibited the tube formation of HUVECs and also inhibited HIF-1 function (Yang, Yao, et al., 2016).
At the nanometer scale, the properties or characteristics of silver will change its electrical properties. Marius Boboc, ... Alexandru Mihai Grumezescu, in Nanostructures for Antimicrobial Therapy, 2017. TEM confirmed the presence of Ag NP in the stratum corneum and the outermost surface of the epidermis but not in the dermis. Silver NPs find their utility in daily activities. Silver (Ag) Nanoparticles, nanodots or nanopowder are spherical or nanoflake high surface area metal particles with properties and uses that include inhibiting transmission of HIV and other viruses. Epub 2020 Sep 17. These properties may even be of such high value that they can justify the early price of nanomaterials. -, Li C.Y., Zhang Y.J., Wang M., Zhang Y., Chen G., Li L., Wu D., Wang Q. Some studies have indicated that silver nanoparticles, at concentrations ranging from 6 to 60 μg ml−1, are very efficient at removing and killing various bacterial cells (e.g., Listeria spp., Salmonella spp., E. coli, Pseudomonas spp., and S. aureus) adhered to stainless steel, suggesting that silver nanoparticles could be used as sanitizers in the food industry, perhaps for small surfaces such as utensils.
2015;10:4203–4222. Silver nanoparticles at a high 400 nm concentration decreased inflammatory cytokines (TNF-α, IL-12) and VEGF growth factors that are produced by NFDFs and NHEKs (Franková et al., 2016). Manikandan R, Manikandan B, Raman T, Arunagirinathan K, Prabhu NM, Jothi Basu M, Perumal M, Palanisamy S, Munusamy A. Spectrochim Acta A Mol Biomol Spectrosc. NPs synthesized from Ginseng fresh leaves inhibited B16BL6 melanoma and A549 lung cancer cells at a concentration of 100 μg/mL (Singh, Singh, et al., 2016). Gold nanoparticles (average diameter ~10 nm) showed relatively low anti HIV-1 activity (6-20%) when compared to silver nanoparticles (98%). The data suggested that normal silver nanoparticles have 60–70% lethal effects whereas the conjugated nanoparticles improve the safety profile of the metals (Kemp, Kumar, et al., 2009). Silver nanoparticles are part of the emerging nanotechnology that have gained increasing interest in the field of nanomedicine because of their particular properties and therapeutic potential in treating a … Multidisciplinary Digital Publishing Institute (MDPI). Keywords:
Inorganic salts are the best source for synthesizing silver nanoparticles and depending on the synthesizing methods silver nanoparticles are available at different structures most commonly triangular and hexagonal shapes (Besinis, De Peralta, et al., 2014). Nancy A. Monteiro-Riviere, Francesca Larese Filon, in Adverse Effects of Engineered Nanomaterials, 2012. National Center for Biotechnology Information, Unable to load your collection due to an error, Unable to load your delegates due to an error, Characterization of silver nanoparticles (AgNPs) prepared from, Biological synthesis of various shapes of AgNPs using culture supernatant of various, Dose-dependent antibacterial activity of biologically synthesized AgNPs in, Differential antibacterial activity of AgNPs synthesized with, Effect of AgNPs on vascular endothelial growth factor (VEGF)-induced proliferation of (, Anticancer activity of biologically synthesized AgNPs using. The active packaging system increased the shelf life of cheese, due to silver ion’s ability to control the microbial proliferation, without affecting the functional dairy microorganisms and the sensory characteristics of the product.
Silver NPs were found to block VEGF- and IL-1β-induced permeability in retinal endothelial cells from porcine retina, and this inhibitory effect was dependent on the modulation via Src phosphorylation at Y419.65 A novel study has demonstrated the antitumor activity of biologically synthesized silver NPs in a Dalton’s lymphoma ascites tumor system in vitro, by activation of the caspase 3 enzyme, which is known to have a potent inhibitory effect on disease progression in a mouse model, leading to a potent restorative effect in the treated tumor volume.66, M. Mastromatteo, ... M.A. Silver nanoparticles (AgNPs) are one of the most vital and fascinating nanomaterials among several metallic nanoparticles that are involved in biomedical applications. Preparation and Antimicrobial Activity of Inorganic Nanoparticles, Marius Boboc, ... Alexandru Mihai Grumezescu, in, Nanomedicine: Nanotechnology, Biology and Medicine.
2014;35:393–400. A chitosan coating containing silver oxide was used to wrap foods or to coat perishable fruits and vegetables. Although the applications of nanotechnology to food industry are rather limited, achievements and discoveries in this sector are beginning to impact the food industry as well and in particular, food packaging.
In addition, previous reports showed that the reactive oxygen species (ROS) formed at the surface of the silver nanoparticles or by the released free silver ions under certain conditions may induce cell death of either mammalian cells or microbial cells, which endows the silver nanoparticles with unique antibacterial and antifungal effects .
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