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Hassanen EI, Morsy EA, Abuowarda M, Ibrahim MA, Shaalan M. Silver and gold nanoparticles as a novel approach to fight Sarcoptic mange in rabbits. Sci Rep 2024; 14:10618. [PMID: 38724594 PMCID: PMC11081955 DOI: 10.1038/s41598-024-60736-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 04/26/2024] [Indexed: 05/12/2024] Open
Abstract
Various kinds of pets have been known to contract the ectoparasite Sarcoptes scabiei. Current acaricides are becoming less effective because of the resistance developed by the mite besides their adverse effects on the general activity and reproductive performance of domestic pets. For this reason, the present study aims to discover a novel and safe approach using silver and gold nanoparticles to fight Sarcoptic mange in rabbits as well as to explain their mechanism of action. 15 pet rabbits with clinical signs of Sarcoptic mange that were confirmed by the microscopic examination were used in our study. All rabbits used in this study were assessed positive for the presence of different developing stages of S. scabiei. Three groups of rabbits (n = 5) were used as follows: group (1) didn't receive any treatment, and group (2 and 3) was treated with either AgNPs or GNPs, respectively. Both nanoparticles were applied daily on the affected skin areas via a dressing and injected subcutaneously once a week for 2 weeks at a dose of 0.5 mg/kg bwt. Our results revealed that all rabbits were severely infested and took a mean score = 3. The skin lesions in rabbits that didn't receive any treatments progressed extensively and took a mean score = of 4. On the other hand, all nanoparticle-treated groups displayed marked improvement in the skin lesion and took an average score of 0-1. All NPs treated groups showed remarkable improvement in the microscopic pictures along with mild iNOS, TNF-α, and Cox-2 expression. Both nanoparticles could downregulate the m-RNA levels of IL-6 and IFγ and upregulate IL-10 and TGF-1β genes to promote skin healing. Dressing rabbits with both NPs didn't affect either liver and kidney biomarkers or serum Ig levels indicating their safety. Our residual analysis detected AgNPs in the liver of rabbits but did not detect any residues of GNPs in such organs. We recommend using GNPs as an alternative acaricide to fight rabbit mange.
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Affiliation(s)
- Eman I Hassanen
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt.
| | - Eman A Morsy
- Department of Poultry Disease, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt
| | - Mai Abuowarda
- Department of Parasitology, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt
| | - Marwa A Ibrahim
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt
| | - Mohamed Shaalan
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt
- Polymer Institute, Slovak Academy of Science, Bratislava, Slovakia
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2
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Salla RF, Oliveira FN, Jacintho JC, Cirqueira F, Tsukada E, Vieira LG, Rocha TL. Microplastics and TiO 2 nanoparticles mixture as an emerging threat to amphibians: A case study on bullfrog embryos. Environ Pollut 2024; 346:123624. [PMID: 38387544 DOI: 10.1016/j.envpol.2024.123624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/06/2024] [Accepted: 02/19/2024] [Indexed: 02/24/2024]
Abstract
Emerging contaminants can act as contributing factors to the decline of amphibian populations worldwide. Recently, scientists have drawn attention to the potential ecotoxicity of microplastics and nanomaterials in amphibians, however, their possible effects on embryonic developmental stages are still absent. Thus, the present study analyzed the developmental toxicity of environmentally relevant concentrations of polyethylene microplastics (PE MPs; 60 mg/L) and titanium dioxide nanoparticles (TiO2 NPs; 10 μg/L), isolated or in combination (Mix group) on bullfrog embryos, Aquarana catesbeiana, adapting the Frog Embryo Teratogenesis Assay (FETAX, 96h). Allied to the FETAX protocol, we also analyzed the heart rate and morphometric data. The exposure reduced the survival and hatching rates in groups exposed to TiO2 NPs, and to a lesser extent, also affected the Mix group. TiO2 NPs possibly interacted with the hatching enzymes of the embryos, preventing hatching, and reducing their survival. The reduced effects in the Mix group are due to the agglomeration of both toxicants, making the NPs less available for the embryos. PE MPs got attached to the gelatinous capsule of the chorion (confirmed by fluorescence microscopy), which protected the embryos from eventual direct effects of the microplastics on the hatching and survival rates. Although there were no cardiotoxic effects nor morphometric alterations, there was a significant increase in abdominal edemas in the hatched embryos of the PE MPs group, which indicates that osmoregulation might have been affected by the attachment of the microplastics on the embryos' gelatinous capsule. This study presents the first evidence of developmental toxicity of environmental mixtures of microplastics and nanoparticles on amphibians and reinforces the need for more studies with other amphibian species, especially neotropical specimens that could present bigger sensibility. Our study also highlighted several features of the FETAX protocol as useful tools to evaluate the embryotoxicity of several pollutants on amphibians.
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Affiliation(s)
- Raquel Fernanda Salla
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil; Post-graduation Program of Biotechnology and Environmental Monitoring, Federal University of São Carlos (UFSCar), Campus Sorocaba, Sorocaba, São Paulo, Brazil
| | - Fagner Neves Oliveira
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil; Laboratory for Research in Morphology and Ontogeny, Institute for Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Jaqueline C Jacintho
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil
| | - Felipe Cirqueira
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil
| | - Elisabete Tsukada
- Post-graduation Program of Biotechnology and Environmental Monitoring, Federal University of São Carlos (UFSCar), Campus Sorocaba, Sorocaba, São Paulo, Brazil
| | - Lucélia Gonçalves Vieira
- Laboratory for Research in Morphology and Ontogeny, Institute for Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Thiago Lopes Rocha
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil.
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Adedara IA, Ileola-Gold AV, Adelaja UA, Njoku CA, Ikeji CN, Owoeye O, Farombi EO. Exogenous taurine administration abates reproductive dysfunction in male rats exposed to silver nanoparticles. Environ Toxicol 2024; 39:61-74. [PMID: 37638810 DOI: 10.1002/tox.23945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/18/2023] [Accepted: 08/13/2023] [Indexed: 08/29/2023]
Abstract
The broad contemporary applications of silver nanoparticles (AgNPs) have been associated with various toxicities including reproductive toxicity. Taurine is well acknowledged for its potent pharmacological role in numerous disease models and chemically-mediated toxicity. We investigated the effect of taurine on AgNPs-induced reproductive toxicity in male rats. The animals were intraperitoneally injected with AgNPs (200 μg/kg) alone or co-administered with taurine at 50 and 100 mg/kg for 21 successive days. Exogenous taurine administration significantly abated AgNPs-induced oxidative injury by decreasing the levels of oxidative stress indices while boosting antioxidant enzymes activities and glutathione level in the hypothalamus, testes and epididymis of exposed animals. Taurine administration alleviated AgNPs-induced inflammatory response and caspase-3 activity, an apoptotic biomarker. Moreover, taurine significantly improved spermiogram, reproductive hormones and the marker enzymes of testicular function in AgNPs-treated animals. The ameliorative effect of taurine on pathological lesions induced by AgNPs in the exposed animals was substantiated by histopathological data. This study provides the first mechanistic evidence that taurine supplementation affords therapeutic effect against reproductive dysfunction associated with AgNPs exposure in male rats.
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Affiliation(s)
- Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ayomitan V Ileola-Gold
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Uthman A Adelaja
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Chiwueze A Njoku
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Cynthia N Ikeji
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olatunde Owoeye
- Department of Anatomy, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ebenezer O Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
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Njoku CA, Ileola-Gold AV, Adelaja UA, Ikeji CN, Owoeye O, Adedara IA, Farombi EO. Amelioration of neurobehavioral, biochemical, and morphological alterations associated with silver nanoparticles exposure by taurine in rats. J Biochem Mol Toxicol 2023; 37:e23457. [PMID: 37437208 DOI: 10.1002/jbt.23457] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/18/2023] [Accepted: 07/04/2023] [Indexed: 07/14/2023]
Abstract
The adverse effect of silver nanoparticles (AgNPs) on the nervous system is an emerging concern of public interest globally. Taurine, an essential amino acid required for neurogenesis in the nervous system, is well-documented to possess antioxidant, anti-inflammatory, and antiapoptotic activities. Yet, there is no report in the literature on the effect of taurine on neurotoxicity related to AgNPs exposure. Here, we investigated the neurobehavioral and biochemical responses associated with coexposure to AgNPs (200 µg/kg body weight) and taurine (50 and 100 mg/kg body weight) in rats. Locomotor incompetence, motor deficits, and anxiogenic-like behavior induced by AgNPs were significantly alleviated by both doses of taurine. Taurine administration enhanced exploratory behavior typified by increased track plot densities with diminished heat maps intensity in AgNPs-treated rats. Biochemical data indicated that the reduction in cerebral and cerebellar acetylcholinesterase activity, antioxidant enzyme activities, and glutathione level by AgNPs treatment were markedly upturned by both doses of taurine. The significant abatement in cerebral and cerebellar oxidative stress indices namely reactive oxygen and nitrogen species, hydrogen peroxide, and lipid peroxidation was evident in rats cotreated with AgNPs and taurine. Further, taurine administration abated nitric oxide and tumor necrosis factor-alpha levels cum myeloperoxidase and caspase-3 activities in AgNPs-treated rats. Amelioration of AgNPs-induced neurotoxicity by taurine was confirmed by histochemical staining and histomorphometry. In conclusion, taurine via attenuation of oxido-inflammatory stress and caspase-3 activation protected against neurotoxicity induced by AgNPs in rats.
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Affiliation(s)
- Chiwueze A Njoku
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ayomitan V Ileola-Gold
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Uthman A Adelaja
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Cynthia N Ikeji
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olatunde Owoeye
- Department of Anatomy, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ebenezer O Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
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5
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Tedla G, Rogers K. Characterization of 3D printing filaments containing metal additives and their particulate emissions. Sci Total Environ 2023; 875:162648. [PMID: 36906034 PMCID: PMC10947787 DOI: 10.1016/j.scitotenv.2023.162648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/01/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Polylactic acid (PLA) filaments are widely used in fused filament fabrication (FFF) processes (3D printing). Filament additives such as metallic particles incorporated into PLA to modify functional and aesthetic features of print objects are becoming increasingly popular. However, the identities and concentrations of low percentage and trace metals in these filaments have not been well described in either the literature or product safety information included with the product. We report the structures and concentrations of metals in selected Copperfill, Bronzefill and Steelfill filaments. We also report size-weighted number concentrations and size-weighted mass concentrations of particulate emissions as a function of print temperature for each filament. Particulate emissions were heterogenous in shape and size with airborne particles below 50 nm diameter dominating the size-weighted particle concentrations and larger particles (approximately 300 nm) dominating the mass weighted particle concentration. Results indicate that potential exposure to particles in the nano-size range increase when using print temperatures above 200o C. Because inhalation exposure to nanoparticles has been linked to adverse health outcomes, we suggest that using lower print temperatures for specific metal-fill filaments may reduce their operational hazard.
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Affiliation(s)
- Getachew Tedla
- Oak Ridge Institute of Science and Education, Research Triangle Park, NC 27711, United States of America
| | - Kim Rogers
- Watershed and Ecosystem Characterization Division, Center for Environmental Measurement and Modeling, USEPA, RTP, NC 27711, United States of America.
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Varga M, Žuna Pfeiffer T, Begović L, Mlinarić S, Horvatić J, Miloloža T, Štolfa Čamagajevac I. Physiological Response of Nutrient-Stressed Lemna gibba to Pulse Colloidal Silver Treatment. Plants (Basel) 2023; 12:1367. [PMID: 36987055 PMCID: PMC10055381 DOI: 10.3390/plants12061367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/23/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
Wastewater is a source of many environmental pollutants and potentially high concentrations of essential plant nutrients. Site-specific nutrient levels may influence the response of exposed plants to a chemical stressor. In the present study, we focused on the responses of model aquatic macrophyte swollen duckweed (Lemna gibba L.) to a short pulse exposure and a commercially available colloidal silver product as a potential environmental chemical stressor, combined with two levels of total nitrogen and phosphorus nutrition. Treatment with the commercially available colloidal silver product caused oxidative stress in L. gibba plants under both high and low nutrient levels. Plants grown and treated under high nutrient levels showed lower levels of lipid peroxidation and hydrogen peroxide accumulation, as well as higher levels of photosynthetic pigment content in comparison to treated plants under low nutrient levels. Higher free radical scavenging activity for plants treated with silver in combination with high nutrient levels resulted in better overall protection from silver-induced oxidative stress. The results showed that external nutrient levels significantly affected the L. gibba plant's response to the colloidal silver presence in the environment and that nutrient levels should be considered in the assessment of potential environmental impact for contaminants.
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7
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Thornton LL, Carlson DE, Wiesner MR. Predicting emerging chemical content in consumer products using machine learning. Sci Total Environ 2022; 834:154849. [PMID: 35405240 DOI: 10.1016/j.scitotenv.2022.154849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/20/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
Chemical ingredients in consumer products are continually changing. To understand our exposure to chemicals and their consequent risk, we need to know their concentrations in products, or chemical weight fractions. Unfortunately, manufacturers rarely report comprehensive weight fraction data on product labels. The goal of this study was to evaluate the utility of machine learning strategies for predicting weight fractions when chemical constituent data are limited. A "data-poor" framework was developed and tested using a small dataset on consumer products containing engineered nanomaterials to represent emerging substances. A second, more traditional framework was applied to a "data-rich" product dataset comprised of bulk-scale organic chemicals for comparison purposes. Feature variables included chemical properties, functional use categories (e.g., antimicrobial), product categories (e.g., makeup), product matrix categories, and whether weight fractions were manufacturer-reported or experimentally obtained. Classification into three weight fraction bins was done using a random forest or nonlinear support vector classifier. An ablation study revealed that functional use data improved predictive performance when included alongside chemical property data, suggesting the utility of functional use categories in evaluating the safety and sustainability of emerging chemicals. Models could roughly stratify material-product observations into order of magnitude weight fractions with moderate success; the best of these achieved an average balanced accuracy of 73% on the nanomaterials product data. Framework comparisons also revealed a positive trend in sample size versus average balanced accuracy, suggesting great promise for machine learning approaches with continued investment in chemical data collection.
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Affiliation(s)
- Luka Lila Thornton
- Duke University, Department of Civil and Environmental Engineering, 121 Hudson Hall, Durham, NC 27708, USA; Center for the Environmental Implications of NanoTechnology (CEINT), USA.
| | - David E Carlson
- Duke University, Department of Civil and Environmental Engineering, 121 Hudson Hall, Durham, NC 27708, USA; Duke University, Department of Biostatistics and Bioinformatics, Duke University Medical Center, 2424 Erwin Road, Suite 1102 Hock Plaza, Durham, NC 27710, USA
| | - Mark R Wiesner
- Duke University, Department of Civil and Environmental Engineering, 121 Hudson Hall, Durham, NC 27708, USA; Center for the Environmental Implications of NanoTechnology (CEINT), USA
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Zhang Q, Hu Y, Masterson CM, Jang W, Xiao Z, Bohloul A, Garcia-Rojas D, Puppala HL, Bennett G, Colvin VL. When Function is Biological: Discerning How Silver Nanoparticle Structure Dictates Antimicrobial Activity. iScience 2022; 25:104475. [PMID: 35789852 PMCID: PMC9249613 DOI: 10.1016/j.isci.2022.104475] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 05/05/2022] [Accepted: 05/20/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Qingbo Zhang
- Department of Chemistry and School of Engineering, Brown University, Providence RI 02912, USA
| | - Yue Hu
- Department of Chemistry and School of Engineering, Brown University, Providence RI 02912, USA
| | - Caitlin M. Masterson
- Department of Chemistry and School of Engineering, Brown University, Providence RI 02912, USA
| | - Wonhee Jang
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | - Zhen Xiao
- Department of Chemistry and School of Engineering, Brown University, Providence RI 02912, USA
| | - Arash Bohloul
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | | | - Hema L. Puppala
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | - George Bennett
- Department of Biosciences, Rice University, Houston, TX 77005, USA
| | - Vicki L. Colvin
- Department of Chemistry and School of Engineering, Brown University, Providence RI 02912, USA
- Corresponding author
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Guilloteau E, Djouina M, Caboche S, Waxin C, Deboudt K, Beury D, Hot D, Pichavant M, Dubuquoy L, Launay D, Vignal C, Choël M, Body-Malapel M. Exposure to atmospheric Ag, TiO 2, Ti and SiO 2 engineered nanoparticles modulates gut inflammatory response and microbiota in mice. Ecotoxicol Environ Saf 2022; 236:113442. [PMID: 35367877 DOI: 10.1016/j.ecoenv.2022.113442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/08/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
The development of nanotechnologies is leading to greater abundance of engineered nanoparticles (EN) in the environment, including in the atmospheric air. To date, it has been shown that the most prevalent EN found in the air are silver (Ag), titanium dioxide (TiO2), titanium (Ti), and silicon dioxide (SiO2). As the intestinal tract is increasingly recognized as a target for adverse effects induced by inhalation of air particles, the aim of this study was to assess the impact of these 4 atmospheric EN on intestinal inflammation and microbiota. We assessed the combined toxicity effects of Ag, Ti, TiO2, and SiO2 following a 28-day inhalation protocol in male and female mice. In distal and proximal colon, and in jejunum, EN mixture inhalation did not induce overt histological damage, but led to a significant modulation of inflammatory cytokine transcript abundance, including downregulation of Tnfα, Ifnγ, Il1β, Il17a, Il22, IL10, and Cxcl1 mRNA levels in male jejunum. A dysbiosis was observed in cecal microbiota of male and female mice exposed to the EN mixture, characterized by sex-dependent modulations of specific bacterial taxa, as well as sex-independent decreased abundance of the Eggerthellaceae family. Under dextran sodium sulfate-induced inflammatory conditions, exposure to the EN mixture increased the development of colitis in both male and female mice. Moreover, the direct dose-response effects of individual and mixed EN on gut organoids was studied and Ag, TiO2, Ti, SiO2, and EN mixture were found to generate specific inflammatory responses in the intestinal epithelium. These results indicate that the 4 most prevalent atmospheric EN could have the ability to disturb intestinal homeostasis through direct modulation of cytokine expression in gut epithelium, and by altering the inflammatory response and microbiota composition following inhalation.
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Affiliation(s)
- Eva Guilloteau
- University of Lille, Inserm, CHU Lille, U1286- INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France
| | - Madjid Djouina
- University of Lille, Inserm, CHU Lille, U1286- INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France
| | - Ségolène Caboche
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, UMR2014 - US41 - PLBS-Plateformes Lilloises de Biologie & Santé, F-59000 Lille, France
| | - Christophe Waxin
- University of Lille, Inserm, CHU Lille, U1286- INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France
| | - Karine Deboudt
- Université du Littoral Côte d'Opale, EA 4493 - LPCA - Laboratoire de Physico-Chimie de l'Atmosphère, 59140 Dunkerque, France
| | - Delphine Beury
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, UMR2014 - US41 - PLBS-Plateformes Lilloises de Biologie & Santé, F-59000 Lille, France
| | - David Hot
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, UMR2014 - US41 - PLBS-Plateformes Lilloises de Biologie & Santé, F-59000 Lille, France
| | - Muriel Pichavant
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France
| | - Laurent Dubuquoy
- University of Lille, Inserm, CHU Lille, U1286- INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France
| | - David Launay
- University of Lille, Inserm, CHU Lille, U1286- INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France
| | - Cécile Vignal
- University of Lille, Inserm, CHU Lille, U1286- INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France
| | - Marie Choël
- University of Lille, CNRS, UMR 8516 - LASIRE - Laboratoire de Spectroscopie pour les Interactions, la Réactivité et l'Environnement, F-59000 Lille, France
| | - Mathilde Body-Malapel
- University of Lille, Inserm, CHU Lille, U1286- INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France.
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Abreu CBD, Gebara RC, Reis LLD, Rocha GS, Alho LDOG, Alvarenga LM, Virtuoso LS, Assis M, Mansano ADS, Longo E, Melão MDGG. Toxicity of α-Ag 2WO 4 microcrystals to freshwater microalga Raphidocelis subcapitata at cellular and population levels. Chemosphere 2022; 288:132536. [PMID: 34637867 DOI: 10.1016/j.chemosphere.2021.132536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/07/2021] [Accepted: 10/08/2021] [Indexed: 05/29/2023]
Abstract
Silver-based materials have microbicidal action, photocatalytic activity and electronic properties. The increase in manufacturing and consumption of these compounds, given their wide functionality and application, is a source of contamination to freshwater ecosystems and causes toxicity to aquatic biota. Therefore, for the first time, we evaluated the toxicity of the silver tungstate (α-Ag2WO4), in different morphologies (cube and rod), for the microalga Raphidocelis subcapitata. To investigate the toxicity, we evaluated the growth rate, cell complexity and size, reactive oxygen species (ROS) production and chlorophyll a (Chl a) fluorescence. The α-Ag2WO4 - R (rod) was 1.7 times more toxic than α-Ag2WO4-C (cube), with IC10 and IC50 values of, respectively, 8.68 ± 0.91 μg L-1 and 13.72 ± 1.48 μg L-1 for α-Ag2WO4 - R and 18.60 ± 1.61 μg L-1 and 23.47 ± 1.16 μg L-1 for α-Ag2WO4-C. The release of silver ions was quantified and indicated that the silver ions dissolution from the α-Ag2WO4 - R ranged from 34 to 71%, while the Ag ions from the α-Ag2WO4-C varied from 35 to 97%. The α-Ag2WO4-C induced, after 24 h exposure, the increase of ROS at the lowest concentrations (8.81 and 19.32 μg L-1), whereas the α-Ag2WO4 - R significantly induced ROS production at 96 h at the highest concentration (31.76 μg L-1). Both microcrystal shapes significantly altered the cellular complexity and decreased the Chl a fluorescence at all tested concentrations. We conclude that the different morphologies of α-Ag2WO4 negatively affect the microalga and are important sources of silver ions leading to harmful consequences to the aquatic ecosystem.
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Affiliation(s)
- Cínthia Bruno de Abreu
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil.
| | - Renan Castelhano Gebara
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
| | - Larissa Luiza Dos Reis
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
| | - Giseli Swerts Rocha
- Department of Hydraulic and Sanitation (NEEA/CRHEA/SHS), São Carlos School of Engineering, University of São Paulo, Avenida Trabalhador São-Carlense 400, 13560-970, São Carlos, SP, Brazil
| | - Lays de Oliveira Gonçalves Alho
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
| | - Laís Mendes Alvarenga
- Chemistry Institute - Federal University of Alfenas (UNIFAL-MG), Gabriel Monteiro da Silva, 700, Centro, 37130-000, Alfenas, MG, Brazil
| | - Luciano Sindra Virtuoso
- Chemistry Institute - Federal University of Alfenas (UNIFAL-MG), Gabriel Monteiro da Silva, 700, Centro, 37130-000, Alfenas, MG, Brazil
| | - Marcelo Assis
- Center for Development of Functional Materials (CDMF), Federal University of São Carlos - (UFSCar), P.O, Box 676, 13565-905, São Carlos, SP, Brazil
| | - Adrislaine da Silva Mansano
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
| | - Elson Longo
- Center for Development of Functional Materials (CDMF), Federal University of São Carlos - (UFSCar), P.O, Box 676, 13565-905, São Carlos, SP, Brazil
| | - Maria da Graça Gama Melão
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
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11
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An X, Liu L, Schaefer M, Yan B, Scholz C, Hillmer S, Wang K, Luo Y, Ji H, Gladkich J, Herr I. Alpha-Lipoic Acid Prevents Side Effects of Therapeutic Nanosilver without Compromising Cytotoxicity in Experimental Pancreatic Cancer. Cancers (Basel) 2021; 13:4770. [PMID: 34638256 PMCID: PMC8507678 DOI: 10.3390/cancers13194770] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/16/2021] [Accepted: 09/20/2021] [Indexed: 01/14/2023] Open
Abstract
Silver nanoparticles (AgNPs) have attracted attention in cancer therapy and might support the treatment of pancreatic ductal adenocarcinoma (PDAC). Silver is in clinical use in wound dressings, catheters, stents and implants. However, the side effects of systemic AgNP treatment due to silver accumulation limit its therapeutic application. We evaluated whether the antioxidant and natural agent α-lipoic acid might prevent these side effects. We synthesized AgNPs using an Ionic-Pulser® Pro silver generator and determined the concentration by inductively coupled plasma-optical emission spectrometry. The effect of α-lipoic acid was examined in four PDAC and two nonmalignant cell lines by MTT, FACS analysis, TEM, xenotransplantation and immunohistochemistry. The viability of PDAC cells was nearly totally abolished by AgNP treatment, whereas nonmalignant cells largely resisted. α-Lipoic acid prevented AgNP-induced cytotoxicity in nonmalignant cells but not in PDAC cells, which might be due to the higher sensitivity of malignant cells to silver-induced cytotoxicity. α-Lipoic acid protected mitochondria from AgNP-induced damage and led to precipitation of AgNPs. AgNPs reduced the growth of tumor xenografts, and cotreatment with α-lipoic acid protected chick embryos from AgNP-induced liver damage. Together, α-lipoic acid strongly reduced AgNP-induced side effects without weakening the therapeutic efficacy.
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Affiliation(s)
- Xuefeng An
- Department of General, Visceral & Transplant Surgery, Molecular OncoSurgery, Section Surgical Research, University of Heidelberg, 69120 Heidelberg, Germany; (X.A.); (L.L.); (M.S.); (B.Y.); (K.W.); (Y.L.); (H.J.); (J.G.)
| | - Li Liu
- Department of General, Visceral & Transplant Surgery, Molecular OncoSurgery, Section Surgical Research, University of Heidelberg, 69120 Heidelberg, Germany; (X.A.); (L.L.); (M.S.); (B.Y.); (K.W.); (Y.L.); (H.J.); (J.G.)
| | - Michael Schaefer
- Department of General, Visceral & Transplant Surgery, Molecular OncoSurgery, Section Surgical Research, University of Heidelberg, 69120 Heidelberg, Germany; (X.A.); (L.L.); (M.S.); (B.Y.); (K.W.); (Y.L.); (H.J.); (J.G.)
| | - Bin Yan
- Department of General, Visceral & Transplant Surgery, Molecular OncoSurgery, Section Surgical Research, University of Heidelberg, 69120 Heidelberg, Germany; (X.A.); (L.L.); (M.S.); (B.Y.); (K.W.); (Y.L.); (H.J.); (J.G.)
| | - Christian Scholz
- Institute of Earth Sciences, University of Heidelberg, 69120 Heidelberg, Germany;
| | - Stefan Hillmer
- Electron Microscopy Core Facility, University of Heidelberg, 69120 Heidelberg, Germany;
| | - Kangtao Wang
- Department of General, Visceral & Transplant Surgery, Molecular OncoSurgery, Section Surgical Research, University of Heidelberg, 69120 Heidelberg, Germany; (X.A.); (L.L.); (M.S.); (B.Y.); (K.W.); (Y.L.); (H.J.); (J.G.)
| | - Yiqiao Luo
- Department of General, Visceral & Transplant Surgery, Molecular OncoSurgery, Section Surgical Research, University of Heidelberg, 69120 Heidelberg, Germany; (X.A.); (L.L.); (M.S.); (B.Y.); (K.W.); (Y.L.); (H.J.); (J.G.)
| | - Huihui Ji
- Department of General, Visceral & Transplant Surgery, Molecular OncoSurgery, Section Surgical Research, University of Heidelberg, 69120 Heidelberg, Germany; (X.A.); (L.L.); (M.S.); (B.Y.); (K.W.); (Y.L.); (H.J.); (J.G.)
| | - Jury Gladkich
- Department of General, Visceral & Transplant Surgery, Molecular OncoSurgery, Section Surgical Research, University of Heidelberg, 69120 Heidelberg, Germany; (X.A.); (L.L.); (M.S.); (B.Y.); (K.W.); (Y.L.); (H.J.); (J.G.)
| | - Ingrid Herr
- Department of General, Visceral & Transplant Surgery, Molecular OncoSurgery, Section Surgical Research, University of Heidelberg, 69120 Heidelberg, Germany; (X.A.); (L.L.); (M.S.); (B.Y.); (K.W.); (Y.L.); (H.J.); (J.G.)
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12
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Radwan IM, Potter PM, Dionysiou DD, Al-Abed SR. Silver Nanoparticle Interactions with Surfactant-Based Household Surface Cleaners. Environ Eng Sci 2021; 38:481-488. [PMID: 34675467 PMCID: PMC8525430 DOI: 10.1089/ees.2020.0160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Silver nanoparticles (AgNPs) are the most widely used engineered nanomaterials in consumer products, primarily due to their antimicrobial properties. This widespread usage has resulted in concerns regarding potential adverse environmental impacts and increased probability of human exposure. As the number of AgNP consumer products grows, the likelihood of interactions with other household materials increases. AgNP products have the potential to interact with household cleaning products in laundry, dishwashers, or during general use of all-purpose surface cleaners. This study has investigated the interaction between surfactant-based surface cleaning products and AgNPs of different sizes and with different capping agents. One AgNP consumer product, two laboratory-synthesized AgNPs, and ionic silver were selected for interaction with one cationic, one anionic, and one nonionic surfactant product to simulate AgNP transformations during consumer product usage before disposal and subsequent environmental release. Changes in size, morphology, and chemical composition were detected during a 60 min exposure to surfactant-based surface cleaning products using ultraviolet-visible (UV/Vis) spectroscopy, transmission electron microscopy-energy dispersive X-ray spectroscopy (TEM-EDX), and dynamic light scattering (DLS). Generally, once AgNP suspensions were exposed to surfactant-based surface cleaning products, all the particles showed an initial aggregation, likely due to disruption of their capping agents. Over the 60 min exposure, cleaning agent-1 (cationic) showed more significant particle aggregates than cleaning agent-2 (anionic) and cleaning agent-3 (nonionic). In addition, UV/Vis, TEM-EDX, and DLS confirmed formation of incidental AgNPs from interaction of ionic silver with all surfactant types.
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Affiliation(s)
- Islam M. Radwan
- Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, Ohio, USA
- Environmental Division, National Institute of Oceanography and Fisheries (NIOF), Alexandria, Egypt
| | - Phillip M. Potter
- Oak Ridge Institute for Science and Education, U.S. Environmental Protection Agency, Cincinnati, Ohio, USA
| | - Dionysios D. Dionysiou
- Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, Ohio, USA
| | - Souhail R. Al-Abed
- Center for Environmental Solutions and Emergency Response, U.S. Environmental Protection Agency, Cincinnati, Ohio, USA
- Corresponding author: Center for Environmental Solutions and Emergency Response, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, USA. Phone: (513) 569-7849; Fax: (513) 569-7879;
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13
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Ashraf SA, Siddiqui AJ, Elkhalifa AEO, Khan MI, Patel M, Alreshidi M, Moin A, Singh R, Snoussi M, Adnan M. Innovations in nanoscience for the sustainable development of food and agriculture with implications on health and environment. Sci Total Environ 2021; 768:144990. [PMID: 33736303 DOI: 10.1016/j.scitotenv.2021.144990] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/27/2020] [Accepted: 01/01/2021] [Indexed: 05/14/2023]
Abstract
A rapid increase in world population is leading to the rise in global demand of food and agriculture (agri) products. Nanotechnology and its applications have emerged as one of the most pioneering and promising technology for transforming conventional food and agri industries, with the aim of sustainable farming, improving the food security, quality and safety which could revolutionize the food and agri industries. Current developments in nanotechnology have led to the new paths progressively and bringing the radical changes the way food is perceived throughout the farming, transportation, processing, packaging, storage, monitoring and consumption. This review brings the current updates on novel nanomaterials in food and agri industries. Emphasis is given on the importance of nanotechnological applications, offering complete food solutions from farm to fork; including nutraceutical and functional foods, improving bioavailability, efficiency, nutritional status, nano-additives, food texture, color, taste and packaging. Agricultural sector also witnessed several nano-based products, such as nano-fertilizer, nano-pesticide, nano growth promoters and many more for the development of sustainable farming and crop improvement. Despite of numerous advantages of nanotechnology, there are still toxicity challenges, safety concerns, which needs to be addressed and demands transformations in regulatory policies. Rapid development is projected to transform several foods and agri sectors, with rapid increase in market stake and investment. Government agencies, private research centers as well as academicians are also coming together to explore the benefits of nanotechnology to improve food scarcity in the coming years.
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Affiliation(s)
- Syed Amir Ashraf
- Department of Clinical Nutrition, College of Applied Medical Sciences, University of Hail, Hail, PO Box 2440, Saudi Arabia
| | - Arif Jamal Siddiqui
- Department of Biology, College of Science, University of Hail, Hail, PO Box 2440, Saudi Arabia
| | - Abd Elmoneim O Elkhalifa
- Department of Clinical Nutrition, College of Applied Medical Sciences, University of Hail, Hail, PO Box 2440, Saudi Arabia
| | - Mohammed Idrees Khan
- Department of Clinical Nutrition, College of Applied Health Sciences in Arras, Qassim University, Qassim, Saudi Arabia
| | - Mitesh Patel
- Bapalal Vaidya Botanical Research Centre, Department of Biosciences, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India
| | - Mousa Alreshidi
- Department of Biology, College of Science, University of Hail, Hail, PO Box 2440, Saudi Arabia
| | - Afrasim Moin
- Department of Pharmaceutics, College of Pharmacy, University of Hail, Hail, PO Box 2440, Saudi Arabia
| | - Ritu Singh
- Department of Environmental Sciences, School of Earth Sciences, Central University of Rajasthan, Ajmer, India
| | - Mejdi Snoussi
- Department of Biology, College of Science, University of Hail, Hail, PO Box 2440, Saudi Arabia; Laboratory of Genetics, Biodiversity and Valorisation of Bioressources, High Institute of Biotechnology-University of Monastir, Monastir 5000, Tunisia
| | - Mohd Adnan
- Department of Biology, College of Science, University of Hail, Hail, PO Box 2440, Saudi Arabia.
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He X, Gopinath K, Sathishkumar G, Guo L, Zhang K, Lu Z, Li C, Kang ET, Xu L. UV-Assisted Deposition of Antibacterial Ag-Tannic Acid Nanocomposite Coating. ACS Appl Mater Interfaces 2021; 13:20708-20717. [PMID: 33900718 DOI: 10.1021/acsami.1c03566] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The marked increase in bacterial colonization of medical devices and multiple drug resistance to traditional antibiotics underline the pressing need for developing novel antibacterial surface coatings. In the present investigation, natural polyphenol tannic acid (TA)-capped silver nanoparticles (TA-Ag NPs) were synthesized via an environmentally friendly and sustainable one-step redox reaction under UV irradiation with a simultaneous and uniform deposition on polydimethylsiloxane (PDMS) and other substrate surfaces. In the synthesis process, the dihydroxyphenyl and trihydroxyphenyl groups of TA actively participate in Ag+ reduction, forming co-ordination linkages with Ag NPs and bestowing the deposition on the PDMS surface. The physico-chemical features of TA-Ag NPs were characterized in detail. Microscopic examination, surface elemental analysis, and wettability measurements clearly reveal the decoration of TA-Ag NPs on the substrate surfaces. The modified PDMS surfaces can kill the adhered bacteria or resist the bacterial adhesion, and no live bacteria can be found on their surfaces. Most importantly, the modified PDMS surfaces exhibit predominant antibacterial effects both in vitro in the catheter bridge model and in vivo in a rat subcutaneous infection model. On the other hand, the functionalized surfaces exhibit only a negligible level of cytotoxicity against L929 mouse fibroblasts with no side effects on the major organs of Sprague-Dawley rats after implantation, indicating their biocompatibility for potential biomedical applications.
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Affiliation(s)
- Xiaodong He
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
| | - Kasi Gopinath
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
| | - Gnanasekar Sathishkumar
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
| | - Lingli Guo
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
| | - Kai Zhang
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, Southwest University, Chongqing 400715, P. R. China
| | - Zhisong Lu
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, Southwest University, Chongqing 400715, P. R. China
| | - Changming Li
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
| | - En-Tang Kang
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 117576, Singapore
| | - Liqun Xu
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, Southwest University, Chongqing 400715, P. R. China
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15
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Gillois K, Stoffels C, Leveque M, Fourquaux I, Blesson J, Mils V, Cambier S, Vignard J, Terrisse H, Mirey G, Audinot JN, Theodorou V, Ropers MH, Robert H, Mercier-Bonin M. Repeated exposure of Caco-2 versus Caco-2/HT29-MTX intestinal cell models to (nano)silver in vitro: Comparison of two commercially available colloidal silver products. Sci Total Environ 2021; 754:142324. [PMID: 33254900 DOI: 10.1016/j.scitotenv.2020.142324] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 06/12/2023]
Abstract
Colloidal silver products are sold for a wide range of disinfectant and health applications. This has increased the potential for human exposure to silver nanoparticles (AgNPs) and ions (Ag+), for which oral ingestion is considered to be a major route of exposure. Our objective was to evaluate and compare the toxicity of two commercially available colloidal silver products on two human intestinal epithelial models under realistic exposure conditions. Mesosilver™ and AgC were characterized and a concentration range between 0.1 and 12 μg/mL chosen. Caco-2 cells vs. co-culture of Caco-2 and mucus-secreting HT29-MTX cells (90/10) were used. Repeated exposure was carried out to determine cell viability over 18 days of cell differentiation in 24-well plates. Selected concentrations (0.1, 1, and 3 μg/mL) were tested on cells cultured in E-plates and Transwells with the same repeated exposure regimen, to determine cell impedance, and cell viability and trans-epithelial electrical resistance (TEER), respectively. Silver uptake, intracellular localisation, and translocation were determined by CytoViva™, HIM-SIMS, and ICP-MS. Genotoxicity was determined on acutely-exposed proliferating Caco-2 cells by γH2AX immunofluorescence staining. Repeated exposure of a given concentration of AgC, which is composed solely of ionic silver, generally exerted more toxic effects on Caco-2 cells than Mesosilver™, which contains a mix of AgNPs and ionic silver. Due to its patchy structure, the presence of mucus in the Caco-2/HT29-MTX co-culture only slightly mitigated the deleterious effects on cell viability. Increased genotoxicity was observed for AgC on proliferating Caco-2 cells. Silver uptake, intracellular localisation, and translocation were similar. In conclusion, Mesosilver™ and AgC colloidal silver products show different levels of gut toxicity due to the forms of distinct silver (AgNPs and/or Ag+) contained within. This study highlights the applicability of high-resolution (chemical) imaging to detect and localize silver and provides insights into its uptake mechanisms, intracellular fate and cellular effects.
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Affiliation(s)
- Kévin Gillois
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Charlotte Stoffels
- Luxembourg Institute of Science and Technology (LIST), 41, rue de Brill, Belvaux L-4422, Luxembourg
| | - Mathilde Leveque
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Isabelle Fourquaux
- Centre de Microscopie Électronique Appliquée à la Biologie, CMEAB, 133 route de Narbonne, 31062 Toulouse, France
| | - Justine Blesson
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Valérie Mils
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Sébastien Cambier
- Luxembourg Institute of Science and Technology (LIST), 41, rue de Brill, Belvaux L-4422, Luxembourg
| | - Julien Vignard
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Hélène Terrisse
- Université de Nantes, CNRS, Institut des Matériaux Jean Rouxel, IMN, F-44000 Nantes, France
| | - Gladys Mirey
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Jean-Nicolas Audinot
- Luxembourg Institute of Science and Technology (LIST), 41, rue de Brill, Belvaux L-4422, Luxembourg
| | - Vassilia Theodorou
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | | | - Hervé Robert
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Muriel Mercier-Bonin
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France.
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16
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Leino V, Airaksinen R, Viluksela M, Vähäkangas K. Toxicity of colloidal silver products and their marketing claims in Finland. Toxicol Rep 2020; 8:106-113. [PMID: 33437653 PMCID: PMC7786010 DOI: 10.1016/j.toxrep.2020.12.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 11/21/2020] [Accepted: 12/21/2020] [Indexed: 01/30/2023] Open
Abstract
AIMS The aim was to investigate the marketing practices, beliefs and health claims regarding the use of colloidal silver in Finland. Silver nanoparticles (AgNPs) are potentially toxic due to their small size and Ag+-release capabilities, and the use of colloidal silver products containing AgNPs can cause a wide variety of adverse effects such as argyria. METHODS Contents of three company websites selling colloidal silver were reviewed, and the claims used in the marketing of colloidal silver were compared to the scientific information about silver. In Facebook posts and discussion about colloidal silver were analyzed. RESULTS In Finland, the marketing of colloidal silver products on websites selling the products did not follow the regulations of authorities; several scientifically unfounded claims about the efficacy and medical use of colloidal silver were found. After the Finnish Broadcasting Company (Yle) documentary and an intervention by authorities, contents of the websites were changed, but still questionable information and misleading claims could be found. In the analyzed Facebook groups attitudes towards medical use of colloidal silver were uncritically positive, internal use was highly promoted and the restrictions of use were considered unjustified. CONCLUSIONS The use of quackery products such as colloidal silver can be dangerous, and their use and marketing should be controlled and restricted.
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Key Words
- APTT, active partial thromboplastin time
- ATP, adenosine triphosphate
- AgNPs, silver nanoparticles
- Colloidal silver
- Evira, the finnish food safety authority
- Fimea, the finnish medicines agency
- LDH, lactate dehydrogenase
- NOAEL, no observable adverse effect level
- Pseudo-medicine
- Quackery
- ROS, reactive oxygen species
- RfD, reference dose
- Silver nanoparticles
- Social media
- THL, the finnish institute for health and welfare
- Tukes, the finnish safety and chemicals agency
- U.S. EPA, the environmental protection agency of the USA
- WHO, the World Health Organization
- Web-based advertising
- Yle, the finnish broadcasting company
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Affiliation(s)
- Veera Leino
- School of Pharmacy/Toxicology, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | | | - Matti Viluksela
- School of Pharmacy/Toxicology, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
- Finnish Institute for Health and Welfare, Kuopio, Finland
| | - Kirsi Vähäkangas
- School of Pharmacy/Toxicology, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
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17
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Laycock A, Wright MD, Römer I, Buckley A, Smith R. Characterisation of particles within and aerosols produced by nano-containing consumer spray products. Atmos Environ X 2020; 8:100079. [PMID: 33392499 PMCID: PMC7770152 DOI: 10.1016/j.aeaoa.2020.100079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 05/08/2020] [Accepted: 05/09/2020] [Indexed: 06/12/2023]
Abstract
Nanoparticles have been incorporated into a range of consumer spray products, providing the potential for inadvertent inhalation by users and bystanders. The levels and characteristics of nanoparticle inhalation exposures arising from the use of such products are important inputs to risk assessments and informing dose regimes for in vitro and in vivo studies investigating hazard potentials. To date, only a small number of studies have been undertaken to explore both the aerosols generated from such products and the metal nanoparticles within them. The objective of the current study was to add to the limited data in this field by investigating a range of nano-containing spray products available within the UK. Six products were selected and the nanoparticles characterised using a combination of techniques, including: inductively coupled plasma mass spectrometry (ICP-MS), dynamic light scattering (DLS), nanoparticle tracking analysis (NTA), transmission electron microscopy energy-dispersive X-ray spectroscopy (TEM-EDX) and single particle ICP-MS (spICP-MS). The aerosol produced by these products, when sprayed within a glovebox, was characterised by scanning mobility particle sizer (SMPS) and an aerodynamic particle sizer (APS). A cascade impactor with thirteen stages (NanoMOUDI) was used with one product to generate information on the size specific nanoparticle elemental distribution within the aerosol. The results demonstrated the presence of solid nanoparticles (silver, gold or silica) in each of the products at low concentrations (<13 ppm). TEM and (sp)ICP-MS provided reliable information on nanoparticle size, shape, number and mass, while the light scattering methods were less effective due to the complex matrices of the products and their lack of chemical specificity. The aerosols varied significantly across products, with particle and mass concentrations spanning 5 orders of magnitude (10 - 106 cm-3 and 0.3-7600 μg m-3, respectively). The NanoMOUDI results clearly indicated non-uniform distribution of silver within different aerosol particle size ranges.
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Affiliation(s)
- Adam Laycock
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Harwell Campus, Didcot, OX11 0RQ, UK
| | - Matthew D. Wright
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Harwell Campus, Didcot, OX11 0RQ, UK
| | - Isabella Römer
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Harwell Campus, Didcot, OX11 0RQ, UK
| | - Alison Buckley
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Harwell Campus, Didcot, OX11 0RQ, UK
| | - Rachel Smith
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Harwell Campus, Didcot, OX11 0RQ, UK
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Park J, Ham S, Kim S, Jang M, Lee J, Kim S, Park D, Lee K, Kim H, Kim P, Yoon C. Physicochemical characteristics of colloidal nanomaterial suspensions and aerosolized particulates from nano-enabled consumer spray products. Indoor Air 2020; 30:925-941. [PMID: 32201992 DOI: 10.1111/ina.12668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/11/2020] [Accepted: 03/15/2020] [Indexed: 06/10/2023]
Abstract
Physicochemical properties between colloidal engineered nanomaterials (ENMs) and aerosols released from consumer spray products were characterized. A dynamic light scattering (DLS), transmission electron microscopy (TEM), and inductively coupled plasma mass spectrometer (ICP-MS) were used to evaluate the suspended ENMs in the products. Direct-reading instruments, TEM, and ICP-MS were used to characterize the properties of aerosolized ENMs. The aerosolized organic compounds with ENMs were assumed to be vaporized for a short time after spraying. The median diameter of ENMs in product solutions measured by DLS was about 200-350 nm, while individual particle was confirmed from 3 to 50 nm by TEM. The size of aerosolized ENMs was ranged from 7 to 44 nm, and their aggregates were about 100-1000 nm in near distance. Some inorganic substances including raw nanomaterials were also found in the aerosol. The particles released from the propellant sprays were identified in far distance, while they were not found in far distance when pump sprays were used. The number concentration from the propellant sprays increased up to 6000 particles/cm3 /g at near distance and dispersed to far distance, while the most of droplets emitted from pump sprays were settled down near sprayer's location. We found other metals besides labeled ENMs are included in each product and the characteristics of the particles are different when they are sprayed.
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Affiliation(s)
- Jihoon Park
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe Forschungsgesellschaft mbH, Saarbrücken, Germany
- Department of Environmental Health Sciences, Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Seunghon Ham
- Department of Occupational and Environmental Medicine, College of Medicine, Gachon University, Incheon, Republic of Korea
| | - Sunju Kim
- Department of Environmental Health Sciences, Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Miyeon Jang
- Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, Ulsan, Republic of Korea
| | - Jinho Lee
- Northern Seoul Regional Office, Korea Occupational Safety and Health Agency, Seoul, Republic of Korea
| | - Sungkyoon Kim
- Department of Environmental Health Sciences, Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Donguk Park
- Department of Environmental Health, Korea National Open University, Seoul, Republic of Korea
| | - Kiyoung Lee
- Department of Environmental Health Sciences, Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Hyunmi Kim
- Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon, Republic of Korea
| | - Pilje Kim
- Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon, Republic of Korea
| | - Chungsik Yoon
- Department of Environmental Health Sciences, Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
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19
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Cacciatore FA, Brandelli A, Malheiros PDS. Combining natural antimicrobials and nanotechnology for disinfecting food surfaces and control microbial biofilm formation. Crit Rev Food Sci Nutr 2020; 61:3771-3782. [PMID: 32811167 DOI: 10.1080/10408398.2020.1806782] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The elimination of microbial surface contaminants is one of the most important steps in Good Manufacturing Practices in order to maintain food safety. This is usually achieved by detergents and chemical sanitizers, although an increased demand exists for the use of natural products for disinfection purposes. Several natural substances present antibacterial activity against the main foodborne pathogens, demonstrating great potential for use in the food industry. Some difficulties such as high volatility, residual taste and/or degradation by exposure to harsh processing conditions have been reported. Nanoparticle encapsulation appears as a strategy to protect bioactive compounds, maintaining their antimicrobial activity and providing controlled release as well. This article presents the potential of natural antimicrobials and their combination with nanotechnological strategies as an alternative for food surface disinfection and prevent microbial biofilm formation.
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Affiliation(s)
- Fabiola Ayres Cacciatore
- Departamento de Ciência de Alimentos, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Adriano Brandelli
- Departamento de Ciência de Alimentos, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.,Centro de Nanociência e Nanotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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20
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Rogers KR, Henson TE, Navratilova J, Surette M, Hughes MF, Bradham KD, Stefaniak AB, Knepp AK, Bowers L. In vitro intestinal toxicity of commercially available spray disinfectant products advertised to contain colloidal silver. Sci Total Environ 2020; 728:138611. [PMID: 32344222 PMCID: PMC7786200 DOI: 10.1016/j.scitotenv.2020.138611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 04/08/2020] [Accepted: 04/08/2020] [Indexed: 05/22/2023]
Abstract
The use of colloidal silver-containing products as dietary supplements, immune boosters and surface disinfectants has increased in recent years which has elevated the potential for human exposure to silver nanoparticles and ions. Product mislabeling and long-term use of these products may put consumers at risk for adverse health outcomes including argyria. This study assessed several physical and chemical characteristics of five commercial products as well as their cytotoxicity using a rat intestinal epithelial cell (IEC-6) model. Concentrations of silver were determined for both the soluble and particulate fractions of the products. Primary particle size distribution and elemental composition were determined by transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS), respectively. Hydrodynamic diameters were measured using nanoparticle tracking analysis (NTA) and dynamic light scattering (DLS). The effect of gastrointestinal (GI) simulation on the colloidal silver products was determined using two systems. First, physical and chemical changes of the silver nanoparticles in these products was assessed after exposure to Synthetic Stomach Fluid (SSF) resulting in particle agglomeration, and the appearance of AgCl on the surfaces and between particles. IEC-6 cells were exposed for 24 h to dilutions of the products and assessed for cell viability. The products were also treated with a three-stage simulated GI system (stomach and intestinal fluids) prior to exposure of the IEC-6 cells to the isolated silver nanoparticles. Cell viability was affected by each of the consumer products. Based on the silver nitrate and commercial silver nanoparticle dose response, the cytotoxicity for each of the colloidal silver products was attributed to the particulate silver, soluble silver or non‑silver matrix constituents.
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Affiliation(s)
- Kim R Rogers
- Watershed and Ecosystem Characterization Division, Center for Environmental Measurement and Modeling, Office of Research and Development, USEPA, RTP, NC 27711, United States.
| | - Taylor E Henson
- Oak Ridge Institute for Science and Education, Research Triangle Park, NC 27711, United States; Chemical Characterization and Exposure Division, Center for Computational Toxicology and Exposure, Office of Research and Development, USEPA, RTP, NC 27711, United States
| | - Jana Navratilova
- Watershed and Ecosystem Characterization Division, Center for Environmental Measurement and Modeling, Office of Research and Development, USEPA, RTP, NC 27711, United States
| | - Mark Surette
- Watershed and Ecosystem Characterization Division, Center for Environmental Measurement and Modeling, Office of Research and Development, USEPA, RTP, NC 27711, United States
| | - Michael F Hughes
- Chemical Characterization and Exposure Division, Center for Computational Toxicology and Exposure, Office of Research and Development, USEPA, RTP, NC 27711, United States
| | - Karen D Bradham
- Watershed and Ecosystem Characterization Division, Center for Environmental Measurement and Modeling, Office of Research and Development, USEPA, RTP, NC 27711, United States
| | - Aleksandr B Stefaniak
- National Institute for Occupational Safety and Health, Morgantown, WV 26506, United States
| | - Alycia K Knepp
- National Institute for Occupational Safety and Health, Morgantown, WV 26506, United States
| | - Lauren Bowers
- National Institute for Occupational Safety and Health, Morgantown, WV 26506, United States
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21
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De Leersnyder I, Rijckaert H, De Gelder L, Van Driessche I, Vermeir P. High Variability in Silver Particle Characteristics, Silver Concentrations, and Production Batches of Commercially Available Products Indicates the Need for a More Rigorous Approach. Nanomaterials (Basel) 2020; 10:E1394. [PMID: 32708985 PMCID: PMC7408040 DOI: 10.3390/nano10071394] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/08/2020] [Accepted: 07/14/2020] [Indexed: 01/28/2023]
Abstract
Due to the beneficial properties of silver, it is anticipated that the number of commercially available applications will keep growing during the next decade. In this study, 14 different commercial products that claim to contain solid silver were characterized by visual analysis, UV-VIS spectroscopy, inductive coupled plasma optical emission spectrometry (ICP-OES), scanning transmission electron microscopy with energy dispersive x-ray spectroscopy (STEM-EDX), and dynamic light scattering (DLS). Moreover the variation between production batches-which has never been researched before-was investigated. All four techniques corroborated that some products were highly concentrated and contained spherically-shaped silver nanoparticles (AgNPs), while in others, no (solid) silver was detected or only irregularly-shaped silver particles with a high size polydispersity were present. For almost all products, a significant difference between the claimed and measured silver concentration was detected and a high variability between different production batches of the same product was observed. Our results show the need for a more rigorous approach regarding the manufacturing, labeling, and use of silver-containing products.
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Affiliation(s)
- Ilse De Leersnyder
- Department of Green Chemistry and Technology, Laboratory of Chemical Analysis (LCA), Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium;
| | - Hannes Rijckaert
- Department of Chemistry, Sol-gel Center for Research on Inorganic Powders and Thin film Synthesis (SCRiPTS), Faculty of Sciences, Ghent University, 9000 Ghent, Belgium; (H.R.); (I.V.D.)
| | - Leen De Gelder
- Department of Biotechnology, Laboratory for Environmental Biotechnology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium;
| | - Isabel Van Driessche
- Department of Chemistry, Sol-gel Center for Research on Inorganic Powders and Thin film Synthesis (SCRiPTS), Faculty of Sciences, Ghent University, 9000 Ghent, Belgium; (H.R.); (I.V.D.)
| | - Pieter Vermeir
- Department of Green Chemistry and Technology, Laboratory of Chemical Analysis (LCA), Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium;
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Bolaños-Benítez V, McDermott F, Gill L, Knappe J. Engineered silver nanoparticle (Ag-NP) behaviour in domestic on-site wastewater treatment plants and in sewage sludge amended-soils. Sci Total Environ 2020; 722:137794. [PMID: 32199365 DOI: 10.1016/j.scitotenv.2020.137794] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/03/2020] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
Untreated sludge from small-scale on-site domestic wastewater treatment systems (septic tanks) was spiked with 20, 60 and 100 nm silver nanoparticles (Ag-NPs) to investigate Ag-NP behaviour in these systems that are widely distributed in rural areas. In addition, the release of Ag-NPs from a previously spiked clay-rich loam reference soil (LUFA 2.4) was evaluated, in the presence and absence of untreated sludge, to simulate the common practice of sludge disposal by spreading on agricultural land. Single particle ICP-MS was used to determine Ag-NP size distribution and the results were compared with total Ag (Ag-NP and ionic) measured in acid digested samples. As documented previously for large municipal scale wastewater treatment plants, Ag-NPs are found to be overwhelmingly (~98%) retained in the sludge in these small-scale systems. The Ag-NP retention efficiency on the LUFA reference soil amended with sludge is approximately 10 times greater than that of LUFA soil alone (in the absence of sludge). For soil spiked with 60 nm Ag-NPs, the calculated average diameter of Ag-NPs in the supernatant, after 24 h was 45 ± 3 nm (dissolution rate 7.2E-06 mol/m2·h for 60 nm Ag-NP), smaller than that of supernatant from the combined sludge/soil system (52 ± 2 nm), indicating lower Ag-NP dissolution rates in the sludge-amended soil. This study provides new information about the leachability of Ag-NPs from septic tank sludge and suggests that the effluent and sludge from septic tanks are potential sources of both nano- and dissolved ionic-Ag to environmental waters.
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Affiliation(s)
| | - Frank McDermott
- School of Earth Sciences, University College Dublin, Belfield, Dublin 4, Ireland
| | - Laurence Gill
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, The University of Dublin, Ireland
| | - Jan Knappe
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, The University of Dublin, Ireland
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23
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Some S, Sarkar B, Biswas K, Jana TK, Bhattacharjya D, Dam P, Mondal R, Kumar A, Deb AK, Sadat A, Saha S, Kati A, Ocsoy I, Franco OL, Mandal A, Mandal S, Mandal AK, İnce İA. Bio-molecule functionalized rapid one-pot green synthesis of silver nanoparticles and their efficacy toward the multidrug resistant (MDR) gut bacteria of silkworms ( Bombyx mori). RSC Adv 2020; 10:22742-22757. [PMID: 35514551 PMCID: PMC9054587 DOI: 10.1039/d0ra03451g] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 05/20/2020] [Indexed: 01/29/2023] Open
Abstract
The present study aimed to synthesise bio-molecule functionalized silver nanoparticles (AgNPs) using leaf extract from mulberry variety S-1635 (Morus alba L.) and to explore its antibacterial efficacy against multidrug resistant (MDR) gut bacteria isolated from natural infection observed from silkworm larvae in rearing conditions. AgNPs formation was established by surface plasmon resonance at 480 nm. The crystallinity of the synthesised AgNPs was checked by HR-TEM and XRD analysis. SEM and TEM characterisation further exhibited the spherical, monodispersed, well scattered nature of the AgNPs with an average particle size of 11.8 nm ± 2.8. The presence of (111), (200), (220) and (311) planes in Bragg's reflections confirmed the face-cantered-cubic crystalline silver. EDX analysis confirmed the presence of elemental silver. FT-IR spectra revealed functional groups were responsible for the reduction of silver ions. The zeta potential value of -17.3 mV and -25.6 mV was recorded in MH and DMEM/F-12 media, respectively. The LC-QTOF/MS and HRMS spectra disclosed the presence of bioactive compounds like flavonoid, gallic acid, and stigmasterol, which are probably involved in the reduction and functionalization of AgNPs. The antibacterial efficacy of bio-molecule functionalized AgNPs and the naked AgNPs was tested on Gram-positive and Gram-negative bacteria isolated from silkworms and characterized by using 16S rDNA and gyrB genes. The cytotoxicity of AgNPs was tested on WRL-68, HEK-293, ACHN, and HUH-7 cell lines using MTT assay. This study provides an insight into the application of bio-molecule functionalized AgNPs for combating various silkworm pathogens which severely affect the agro-rural economy of developing countries.
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Affiliation(s)
- Sudip Some
- Chemical Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Biraj Sarkar
- Department of Microbiology, Laboratory of Molecular Bacteriology, University of Calcutta 700019 India
| | - Kinkar Biswas
- Laboratory of Organic Synthesis, Department of Chemistry, Raiganj University Raiganj-733134 India
| | - Tushar K Jana
- Department of Physics, Vidyasagar University Midnapore-721102 India
| | - Debjoy Bhattacharjya
- Cytogenetics & Plant Biotechnology Research Unit, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Paulami Dam
- Chemical Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Rittick Mondal
- Chemical Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Anoop Kumar
- ANMOL Laboratory, Department of Biotechnology, North Bengal University Darjeeling-734013 India
| | - Apurba K Deb
- Department of Physics, Raiganj University Raiganj-733134 India
| | - Abdul Sadat
- Insect Ecology and Conservation Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Soumen Saha
- Cytogenetics & Plant Biotechnology Research Unit, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Ahmet Kati
- Department of Biotechnology, Institution of Health Sciences, University of Health Sciences Uskudar Istanbul 34668 Turkey
- Department of Medical Microbiology, School of Medicine, Acibadem Mehmet Ali Aydınlar University 34752 Ataşehir Istanbul Turkey
| | - Ismail Ocsoy
- Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University 38039 Kayseri Turkey
| | - Octavio L Franco
- S-INOVA Biotech, Post-Graduate Program in Biotechnology, Catholic University Dom Bosco Campo Grande Mato Grosso Do Sul Brazil
| | - Amitava Mandal
- Molecular Complexity Laboratory, Department of Chemistry, Raiganj University Raiganj-733134 India
| | - Sukhendu Mandal
- Department of Microbiology, Laboratory of Molecular Bacteriology, University of Calcutta 700019 India
| | - Amit Kumar Mandal
- Chemical Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
- Centre for Nanotechnology Sciences, Raiganj University Raiganj-733134 India
| | - İkbal Agah İnce
- Department of Medical Microbiology, School of Medicine, Acibadem Mehmet Ali Aydınlar University 34752 Ataşehir Istanbul Turkey
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24
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Peloquin DM, Baumann EJ, Luxton TP. Multi-method assessment of PVP-coated silver nanoparticles and artificial sweat mixtures. Chemosphere 2020; 249:126173. [PMID: 32065993 PMCID: PMC7449241 DOI: 10.1016/j.chemosphere.2020.126173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 02/04/2020] [Accepted: 02/09/2020] [Indexed: 05/19/2023]
Abstract
Research presented here utilizes silver nanoparticles (AgNPs) as a case study for how the immediate local environment alters the physical and chemical properties of nanomaterials. Dermal exposure is a primary route for exposure to many of the consumer products containing AgNPs. Interactions between AgNPs and human sweat/perspiration are critical for understanding how changes in Ag speciation will impact exposure. Previous studies have examined silver release from AgNP-containing products after exposure to artificial sweat (AS), however there is no basic assessment of how mixtures of AgNPs and AS alter the physical and chemical properties of AgNPs. The current research evaluated changes in size, aggregation, chemical composition, and silver speciation of four different sizes of AgNPs exposed to four different formulations of AS. The AS formulations were from standardized methods with different chemical compositions, ionic strengths, and pH. Samples were collected at four-time intervals for analysis using dynamic light scattering , UV-Vis spectroscopy, and single-particle inductively coupled plasma-mass spectrometry . Each mixture was also prepared for speciation analysis using X-ray absorption spectroscopy and scanning electron microscopy coupled to energy-dispersive X-ray analysis. The equivalent diameter measurements from the three techniques followed the order of DLS > UV-Vis > spICP-MS. Speciation analyses indicate significant changes for the smaller NPs, while the largest (100 nm) NPs had less measurable differences. This study shows the need to fully understand what specific information an analytical technique might provide and to use those techniques properly in tandem to give the fullest answer to a given research question.
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Affiliation(s)
- Derek M Peloquin
- Oak Ridge Institute for Science and Education, 1299 Bethel Valley Rd, Oak Ridge, TN, 37830, USA; U.S. Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Dr, Cincinnati, OH, 45268, USA.
| | - Eric J Baumann
- Oak Ridge Institute for Science and Education, 1299 Bethel Valley Rd, Oak Ridge, TN, 37830, USA; Pegasus Technical Services, Inc., 46 East Hollister Street, Cincinnati, OH, 45219, USA.
| | - Todd P Luxton
- U.S. Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Dr, Cincinnati, OH, 45268, USA.
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25
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Hadrup N, Sharma AK, Loeschner K, Jacobsen NR. Pulmonary toxicity of silver vapours, nanoparticles and fine dusts: A review. Regul Toxicol Pharmacol 2020; 115:104690. [PMID: 32474071 DOI: 10.1016/j.yrtph.2020.104690] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 05/12/2020] [Accepted: 05/26/2020] [Indexed: 12/17/2022]
Abstract
Silver is used in a wide range of products, and during their production and use, humans may be exposed through inhalation. Therefore, it is critical to know the concentration levels at which adverse effects may occur. In rodents, inhalation of silver nanoparticles has resulted in increased silver in the lungs, lymph nodes, liver, kidney, spleen, ovaries, and testes. Reported excretion pathways of pulmonary silver are urinary and faecal excretion. Acute effects in humans of the inhalation of silver include lung failure that involved increased heart rate and decreased arterial blood oxygen pressure. Argyria-a blue-grey discoloration of skin due to deposited silver-was observed after pulmonary exposure in 3 individuals; however, the presence of silver in the discolorations was not tested. Argyria after inhalation seems to be less likely than after oral or dermal exposure. Repeated inhalation findings in rodents have shown effects on lung function, pulmonary inflammation, bile duct hyperplasia, and genotoxicity. In our evaluation, the range of NOAEC values was 0.11-0.75 mg/m3. Silver in the ionic form is likely more toxic than in the nanoparticle form but that difference could reflect their different biokinetics. However, silver nanoparticles and ions have a similar pattern of toxicity, probably reflecting that the effect of silver nanoparticles is primarily mediated by released ions. Concerning genotoxicity studies, we evaluated silver to be positive based on studies in mammalian cells in vitro and in vivo when considering various exposure routes. Carcinogenicity data are absent; therefore, no conclusion can be provided on this endpoint.
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Affiliation(s)
- Niels Hadrup
- National Research Centre for the Working Environment, DK, 2100, Copenhagen, Denmark.
| | - Anoop K Sharma
- Division for Risk Assessment and Nutrition, Group for Chemical Risk Assessment and GMO, National Food Institute, Technical University of Denmark, Denmark
| | - Katrin Loeschner
- Division for Food Technology, Research Group for Nano-Bio Science, National Food Institute, Technical University of Denmark, Denmark
| | - Nicklas R Jacobsen
- National Research Centre for the Working Environment, DK, 2100, Copenhagen, Denmark.
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26
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Abstract
The remarkable advances coming about through nanotechnology promise to revolutionize many aspects of modern life; however, these advances come with a responsibility for due diligence to ensure that they are not accompanied by adverse consequences for human health or the environment. Many novel nanomaterials (having at least one dimension <100 nm) could be highly mobile if released into the environment and are also very reactive, which has raised concerns for potential adverse impacts including, among others, the potential for neurotoxicity. Several lines of evidence led to concerns for neurotoxicity, but perhaps none more than observations that inhaled nanoparticles impinging on the mucosal surface of the nasal epithelium could be internalized into olfactory receptor neurons and transported by axoplasmic transport into the olfactory bulbs without crossing the blood-brain barrier. From the olfactory bulb, there is concern that nanomaterials may be transported deeper into the brain and affect other brain structures. Of course, people will not be exposed to only engineered nanomaterials, but rather such exposures will occur in a complex mixture of environmental materials, some of which are incidentally generated particles of a similar inhalable size range to engineered nanomaterials. To date, most experimental studies of potential neurotoxicity of nanomaterials have not considered the potential exposure sources and pathways that could lead to exposure, and most studies of nanomaterial exposure have not considered potential neurotoxicity. Here, we present a review of potential sources of exposures to nanoparticles, along with a review of the literature on potential neurotoxicity of nanomaterials. We employ the linked concepts of an aggregate exposure pathway (AEP) and an adverse outcome pathway (AOP) to organize and present the material. The AEP includes a sequence of key events progressing from material sources, release to environmental media, external exposure, internal exposure, and distribution to the target site. The AOP begins with toxicant at the target site causing a molecular initiating event and, like the AEP, progress sequentially to actions at the level of the cell, organ, individual, and population. Reports of nanomaterial actions are described at every key event along the AEP and AOP, except for changes in exposed populations that have not yet been observed. At this last stage, however, there is ample evidence of population level effects from exposure to ambient air particles that may act similarly to engineered nanomaterials. The data give an overall impression that current exposure levels may be considerably lower than those reported experimentally to be neurotoxic. This impression, however, is tempered by the absence of long-term exposure studies with realistic routes and levels of exposure to address concerns for chronic accumulation of materials or damage. Further, missing across the board are "key event relationships", which are quantitative expressions linking the key events of either the AEP or the AOP, making it impossible to quantitatively project the likelihood of adverse neurotoxic effects from exposure to nanomaterials or to estimate margins of exposure for such relationships.
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Affiliation(s)
- William K. Boyes
- Neurological and Endocrine Toxicology Branch, Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC USA 27711
| | - Christoph van Thriel
- Leibniz Research Centre for Working Environment and Human Factors, TU Dortmund, Ardeystr. 67, 44139 Dortmund, Germany
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27
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Zhang M, Yang J, Tang L, Pan X, Zhang D. What occurs in colloidal gas aphron-induced separation of titanium dioxide nanoparticles? Particle fate analysis by tracking technologies. Sci Total Environ 2020; 716:137104. [PMID: 32044498 DOI: 10.1016/j.scitotenv.2020.137104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/02/2020] [Accepted: 02/02/2020] [Indexed: 06/10/2023]
Abstract
As an important method of enriching, separating and removing nanoparticles, colloidal gas aphrons (CGAs) need to be investigated for the fate and interfacial behaviors of particles during the process. It is beneficial to sufficiently interpreting the process performance and mechanisms. This study employed complementary tracking technologies to analyze the extensively-used engineered nanoparticles - TiO2 nanoparticles (TiO2-NPs) in effluent and floats of CGA process. Results denote that, at the optimum SDS relative dosage of 0.78 mg/mg TiO2, the particle number concentration was largely reduced by 2-4 orders of magnitude based on nanoparticle tracking analysis (NTA) whilst approximately 84.0% of TiO2-NPs were separated according to inductively coupled plasma-mass spectrometry (ICP-MS). NTA shows the change of overall particle dispersion status in the water phase while ICP-MS provides the Ti-related separation effect. Particularly, the particle size variation for the scenario of overdosing CGAs was clearly observed by NTA. Micro-Raman, dynamic laser scattering and small angle laser light scattering exhibited advantages in obtaining the configuration and morphology of flocs. The large flocs with open structure were apt to form and be favorably separated at the appropriate CGA dosage. However, overdosing CGAs weakened the capture capacity of bubbles and gave rise to small and dense aggregates. This work, for the first time, shows the change of nanoparticles in water and solid phases using the important and novel nanoparticle collection method - CGA technology. It also provides a reference to other flotation-related technologies for studying the nanoparticle fate and the process performance.
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Affiliation(s)
- Ming Zhang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Junhan Yang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Linfeng Tang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xiangliang Pan
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Daoyong Zhang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
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Wasukan N, Kuno M, Maniratanachote R. Molecular Docking as a Promising Predictive Model for Silver Nanoparticle-Mediated Inhibition of Cytochrome P450 Enzymes. J Chem Inf Model 2019; 59:5126-5134. [PMID: 31714078 DOI: 10.1021/acs.jcim.9b00572] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Cytochrome P450 (CYP) enzymes are responsible for oxidative metabolisms of a large number of xenobiotics. In this study, we investigated interactions of silver nanoparticles (AgNPs) and silver ions (Ag+) with six CYP isoforms, namely, CYP1A2, CYP2C9, CYP2C19, CYP2D6, CYP2E1, and CYP3A4, within CYP-specific inhibitor-binding pockets by molecular docking and quantum mechanical (QM) calculations. The docking results revealed that the Ag3 cluster, not Ag+, interacted with key amino acids of CYP2C9, CYP2C19, and CYP2D6 within a distance of about 3 Å. Moreover, the QM analysis confirmed that the amino acid residues of these CYP enzymes strongly interacted with the Ag3 cluster, providing more insight into the mechanism of the potential inhibition of CYP enzyme activities. Interestingly, these results are consistent with previous in vitro data indicating that AgNPs inhibited activities of CYP2C and CYP2D in rat liver microsomes. It is suggested that the Ag3 cluster is a minimal unit of AgNPs for in silico modeling. In summary, we demonstrated that molecular docking, together with QM analysis, is a promising tool to predict AgNP-mediated CYP inhibition. These methods are useful for deeper understanding of reaction mechanisms and could be used for other nanomaterials.
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Affiliation(s)
- Nootcharin Wasukan
- National Science and Technology Development Agency (NSTDA) , 111 Thailand Science Park , Khlong Luang , Pathum Thani 12120 , Thailand
| | - Mayuso Kuno
- Department of Chemistry, Faculty of Science , Srinakharinwirot University , Sukhumwit 23 , Wattana District, Bangkok 10110 , Thailand
| | - Rawiwan Maniratanachote
- National Science and Technology Development Agency (NSTDA) , 111 Thailand Science Park , Khlong Luang , Pathum Thani 12120 , Thailand
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do Amaral DF, Guerra V, Motta AGC, de Melo E Silva D, Rocha TL. Ecotoxicity of nanomaterials in amphibians: A critical review. Sci Total Environ 2019; 686:332-344. [PMID: 31181520 DOI: 10.1016/j.scitotenv.2019.05.487] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 05/15/2019] [Accepted: 05/31/2019] [Indexed: 06/09/2023]
Abstract
Nanomaterials (NMs) have been used in a growing number of commercial products, and their rapid expansion could lead to their release into the aquatic environments. However, there is limited knowledge about the impact of NMs in the biota, especially the amphibians. The present study revised the historical use of amphibian species as a model system for nanoecotoxicological studies and summarized the data available in the scientific literature about the genotoxic, mutagenic, histopathological, embryotoxic and reproductive effects of NMs in different groups of amphibians. The interaction, bioaccumulation, mode of action (MoA) and ecotoxicity of NMs on amphibians were also revised. The nanoecotoxicological studies were conducted with 11 amphibian species, being eight species of the order Anura and three species of the order Caudata. Xenopus laevis was the most studied species. The studies were conducted mainly with inorganic NMs (72%) compared to organic ones. The nanoecotoxicity depends on NM behavior and transformation in the environment, as well as the developmental stages of amphibians. The known effects of NMs in amphibians were mainly reported with reactive oxygen species (ROS) production, oxidative stress, and genotoxic effects. Results emphasize the need for further studies testing the ecotoxicity of different NMs, concentrations and exposure periods at environmentally relevant approaches. Furthermore, standard protocols for nanoecotoxicological tests using amphibians are required. Revised data showed that amphibians are suitable organisms to assess the environmental impact of NMs and indicated significant research gaps concerning the ecotoxicity of NMs on freshwater ecosystems and recommendations for future researches.
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Affiliation(s)
- Diogo Ferreira do Amaral
- Laboratory of Mutagenesis, Department of Genetics, Federal University of Goiás, Goiânia, Goiás, Brazil; Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Vinicius Guerra
- Laboratory of Herpetology and Animal Behavior, Department of Ecology, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Andreya Gonçalves Costa Motta
- Laboratory of Mutagenesis, Department of Genetics, Federal University of Goiás, Goiânia, Goiás, Brazil; Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Daniela de Melo E Silva
- Laboratory of Mutagenesis, Department of Genetics, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Thiago Lopes Rocha
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil.
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Radwan IM, Gitipour A, Potter PM, Dionysiou DD, Al-Abed SR. Dissolution of Silver Nanoparticles in Colloidal Consumer Products: Effects of Particle Size and Capping Agent. J Nanopart Res 2019; 21:1-155. [PMID: 32184700 PMCID: PMC7077831 DOI: 10.1007/s11051-019-4597-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 07/02/2019] [Indexed: 05/20/2023]
Abstract
The utilization of silver nanoparticles (AgNPs) in consumer products has significantly increased in recent years, primarily due to their antimicrobial properties. Increased use of AgNPs has raised ecological concerns. Once released into an aquatic environment, AgNPs may undergo oxidative dissolution leading to the generation of toxic Ag+. Therefore, it is critical to investigate the ecotoxicological potential of AgNPs and determine the physicochemical parameters that control their dissolution in aquatic environments. We have investigated the dissolution trends of aqueous colloidal AgNPs in five products, marketed as dietary supplements and surface sanitizers. The dissolution trends of AgNPs in studied products were compared to the dissolution trends of AgNPs in well-characterized laboratory-synthesized nanomaterials: citrate-coated AgNPs, polyvinylpyrrolidone-coated AgNPs, and branched polyethyleneimine-coated AgNPs. The characterization of the studied AgNPs included: particle size, anion content, metal content, silver speciation, and capping agent identification. There were small differences in the dissolved masses of Ag+ between products, but we did not observe any significant differences in the dissolution trends obtained for deionized water and tap water. The decrease of the dissolved mass of Ag+ in tap water could be due to the reaction between Ag+ and Cl-, forming AgCl and affecting their dissolution. We observed a rapid initial Ag+ release and particle size decrease for all AgNP suspensions due to the desorption of Ag+ from the nanoparticles surfaces. The observed differences in dissolution trends between AgNPs in products and laboratory-synthesized AgNPs could be caused by variances in capping agent, particle size, and total AgNP surface area in suspensions.
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Affiliation(s)
- Islam M. Radwan
- University of Cincinnati, Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), 2600 Clifton Avenue, Cincinnati, OH 45221-001, United States
- National Institute of Oceanography and Fisheries , Marine Chemistry Department, Environmental Division, Qayet-Bey, Al-Anfoushy, Alexandria 21556, Egypt
| | - Alireza Gitipour
- Pegasus Technical Services, Inc., 46 E. Hollister St., Cincinnati, OH 45219, United States
| | - Phillip M. Potter
- Oak Ridge Institute for Science and Education, U.S. Environmental Protection Agency, National Risk Management Research Laboratory, 5995 Center Hill Avenue, Cincinnati, OH 45224, United States
| | - Dionysios D. Dionysiou
- University of Cincinnati, Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), 2600 Clifton Avenue, Cincinnati, OH 45221-001, United States
| | - Souhail R. Al-Abed
- U.S. Environmental Protection Agency, National Risk Management Research Laboratory, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, United States
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Ale A, Liberatori G, Vannuccini ML, Bergami E, Ancora S, Mariotti G, Bianchi N, Galdopórpora JM, Desimone MF, Cazenave J, Corsi I. Exposure to a nanosilver-enabled consumer product results in similar accumulation and toxicity of silver nanoparticles in the marine mussel Mytilus galloprovincialis. Aquat Toxicol 2019; 211:46-56. [PMID: 30946994 DOI: 10.1016/j.aquatox.2019.03.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/22/2019] [Accepted: 03/26/2019] [Indexed: 06/09/2023]
Abstract
The incorporation of silver nanoparticles (AgNPs) in commercial products is increasing rapidly. The consequent release of AgNPs into domestic and industrial wastewater raises environmental concerns due to their anti-microbial properties and toxicity to non-target aquatic organisms. The aim of the present study was to investigate the effects of nanArgen™ (Nanotek S.A.), a AgNP-enabled consumer product, in the marine bivalve Mytilus galloprovincialis. Two environmentally relevant concentrations of nanArgen™ (1 and 10 μg/L) were tested in vivo for 96 h, and Ag was quantified in mussel soft tissue and natural seawater (NSW). nanArgen™ suspensions were characterized via TEM, SEM, EDS, DLS, and UV-vis optical analysis. Several molecular and biochemical responses were investigated in exposed mussels: lysosomal membrane stability by Neutral Red Retention Time (NRRT) assay; micronucleus (MN) frequency in hemocytes; metallothionein (MT) protein content and gene expression (mt10 and mt20); catalase (CAT) and glutathione-S-transferase (GST) activities; malondialdehyde (MDA) accumulation in digestive glands; and efflux activity of ATP-binding cassette transport proteins (ABC) in gill biopsies. SEM, TEM and DLS analyses confirmed the presence of well-defined AgNPs in nanArgen™ which were roughly spherical with an average particle size of approx. 30 ± 10 nm. DLS analysis revealed the formation of AgNP aggregates in nanArgen™ suspension in NSW (Z-average of 547.80 ± 90.23 nm; PDI of 0.044). A significant concentration-dependent accumulation of Ag was found in mussels' whole soft tissue in agreement with a concentration-dependent decrease in NRRT and an increase of MN frequency in hemocytes and GST activities in digestive glands. A significant increase in MDA levels and MT via both molecular and biochemical tests, were also observed but only at the highest nanArgen™ concentration (10 μg/L). No changes were observed in CAT activities. ABC efflux activities in gill biopsies showed a significant decrease (p < 0.05) only at the lowest concentration (1 μg/L). On such basis, nanArgen™ is shown to be able to induce toxicity and Ag accumulation in marine mussels similarly to AgNPs and in short-term exposure conditions at environmentally relevant concentrations. AgNP-enabled products, instead of pristine AgNPs, should be the focus of future ecotoxicity studies in order to address any risks associated to their widespread use, disposal and uncontrolled release into the aquatic environment for non target species.
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Affiliation(s)
- Analía Ale
- Laboratorio de Ictiología, Instituto Nacional de Limnología (INALI-CONICET-UNL), Paraje El Pozo, Ciudad Universitaria UNL, Santa Fe, Argentina.
| | - Giulia Liberatori
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli 4, Siena, Italy.
| | - Maria Luisa Vannuccini
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli 4, Siena, Italy
| | - Elisa Bergami
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli 4, Siena, Italy
| | - Stefania Ancora
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli 4, Siena, Italy
| | - Giacomo Mariotti
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli 4, Siena, Italy
| | - Nicola Bianchi
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli 4, Siena, Italy
| | - Juan M Galdopórpora
- Universidad de Buenos Aires, CONICET, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Facultad de Farmacia y Bioquímica, Cátedra de Química Analítica Instrumental, Buenos Aires, Argentina
| | - Martín F Desimone
- Universidad de Buenos Aires, CONICET, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Facultad de Farmacia y Bioquímica, Cátedra de Química Analítica Instrumental, Buenos Aires, Argentina
| | - Jimena Cazenave
- Laboratorio de Ictiología, Instituto Nacional de Limnología (INALI-CONICET-UNL), Paraje El Pozo, Ciudad Universitaria UNL, Santa Fe, Argentina; Departamento de Ciencias Naturales, Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral (FHUC-UNL), Paraje El Pozo, Ciudad Universitaria UNL, Santa Fe, Argentina
| | - Ilaria Corsi
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli 4, Siena, Italy
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Ortenzio J, Degn L, Goldstein-Plesser A, McGee JK, Navratilova J, Rogers K, Zucker RM, Boyes WK. Determination of Silver Nanoparticle Dose in vitro. NanoImpact 2019; 14:100156. [PMID: 34316524 PMCID: PMC8312577 DOI: 10.1016/j.impact.2019.100156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
An important issue for interpreting in vitro nanomaterial testing is quantifying the dose delivered to target cells. Considerations include the concentration added to the culture, the proportion of the applied dose that interacts with the target cells, and the amount that is eventually absorbed by the target cells. Rapid and efficient techniques are needed to determine delivered doses. Previously, we demonstrated that TiO2 and silver nanoparticles (AgNP) were absorbed by cells in a dose dependent manner between 1 μg/ml and 30 μg/ml and were detected in cells by light scatter using a flow cytometer. Here, we compare four potential indices of the dose of AgNP to cells, including: inductively coupled plasma - mass spectrometry (ICP-MS); flow cytometry side scatter (SSC); and amount of silver deposited to the cell layer as estimated with both an integrated Volumetric Centrifugation Method - In Vitro Sedimentation, Diffusion and Dosimetry Model (VCM-ISDD) and a Distorted Grid (DG) model. A retinal pigment epithelial cell line was exposed to 20 nm or 75 nm citrate-coated AgNP for 24 hr. The relationships between particle sizes and internalized doses varied according to the dose metric. Twenty-four hours after exposure, the cell layer contained a greater mass of silver when treated with 75 nm AgNP than with 20 nm AgNP. When the dose was expressed as the number of particles or as the total surface area of absorbed particles, however, the reverse was true; the dose to the cells was higher after exposure to 20 than 75 nm AgNP. Flow cytometry SSC increased with dose for both sizes of AgNP, and was correlated with Ag in cells measured by ICP-MS. The rate of SSC increase was greater for 75 than for 20 nm AgNP, suggesting it could be used as an indicator of cellular dose after accounting for particle size and composition. Silver was detected by ICP-MS in re-suspended supernates of the isolated cell layer suggested that not all the silver deposited to the cell layer was absorbed by the cells. Both the VCM-ISDD and DG models estimated the proportion of Ag deposited to the cellular layer, which in both cases was greater than the amount of silver in the cells measured by ICP-MS. Modeled deposition more closely compared to the total Ag deposition by ICP-MS, i.e. mass of silver in the cells plus the resuspended, unabsorbed Ag from the cell layer. ICP-MS indicated the mass of silver in cells from AgNP treatment, but not whether the Ag was in the form of particles or dissolved ions. Deposition models predicted the amount of AgNP deposited to the cell layer, but not cellular uptake. Flow cytometry SSC was correlated to cellular uptake of particle-form AgNP and could be calibrated against ICP-MS to indicate mass of cellular uptake. Therefore, a combination of approaches may be required to accurately understand cellular dosimetry of in vitro nanotoxicology experiments. In summary, cellular dosimetry is an important consideration for nanotoxicology experiments, and not necessarily related to the applied dose.
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Affiliation(s)
- Jayna Ortenzio
- Oak Ridge Institute for Science and Education (ORISE) appointee at the National Health and Environmental Effects Research Laboratory, USEPA, RTP, NC 27711
| | - Laura Degn
- Toxicity Assessment Division, MD B105-04, National Health and Environmental Effects Research Laboratory, Office of Research and Development, USEPA, RTP, NC 27711
| | - Alice Goldstein-Plesser
- Oak Ridge Institute for Science and Education (ORISE) appointee at the National Health and Environmental Effects Research Laboratory, USEPA, RTP, NC 27711
| | - John K. McGee
- EPH Division, MD B105-02 NHEERL, ORD, U.S. E.P.A., Research Triangle Park, NC 27711, USA
| | - Jana Navratilova
- National Research Council Fellow at the National Exposure Research Laboratory, USEPA, RTP, NC 27711
| | - Kim Rogers
- Exposure Methods & Measurements Division, National Exposure Research Laboratory, USEPA, RTP, NC 27711
| | - Robert M. Zucker
- Toxicity Assessment Division, MD B105-04, National Health and Environmental Effects Research Laboratory, Office of Research and Development, USEPA, RTP, NC 27711
| | - William K. Boyes
- Toxicity Assessment Division, MD B105-04, National Health and Environmental Effects Research Laboratory, Office of Research and Development, USEPA, RTP, NC 27711
- Corresponding author: 109 T.W. Alexander Drive, B105-04, NHEERL/TAD/NB, U.S. EPA, Research Triangle Park, NC 27711, United States, Telephone: +1-919-541-7538; Fax:+1-919-541-4849;
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Martín-Yerga D. Electrochemical Detection and Characterization of Nanoparticles with Printed Devices. Biosensors (Basel) 2019; 9:E47. [PMID: 30925772 PMCID: PMC6627282 DOI: 10.3390/bios9020047] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 03/16/2019] [Accepted: 03/25/2019] [Indexed: 12/15/2022]
Abstract
Innovative methods to achieve the user-friendly, quick, and highly sensitive detection of nanomaterials are urgently needed. Nanomaterials have increased importance in commercial products, and there are concerns about the potential risk that they entail for the environment. In addition, detection of nanomaterials can be a highly valuable tool in many applications, such as biosensing. Electrochemical methods using disposable, low-cost, printed electrodes provide excellent analytical performance for the detection of a wide set of nanomaterials. In this review, the foundations and latest advances of several electrochemical strategies for the detection of nanoparticles using cost-effective printed devices are introduced. These strategies will equip the experimentalist with an extensive toolbox for the detection of nanoparticles of different chemical nature and possible applications ranging from quality control to environmental analysis and biosensing.
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Affiliation(s)
- Daniel Martín-Yerga
- Department of Chemical Engineering, KTH Royal Institute of Technology, 100-44 Stockholm, Sweden.
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Affiliation(s)
- Serenella Medici
- Department of Chemistry and Pharmacy, University of Sassari, 07100 Sassari, Italy
| | - Massimiliano Peana
- Department of Chemistry and Pharmacy, University of Sassari, 07100 Sassari, Italy
| | - Valeria M. Nurchi
- Department of Life and Environmental Sciences, University of Cagliari, 09042 Cagliari, Italy
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Varga M, Horvatić J, Barišić L, Lončarić Z, Dutour Sikirić M, Erceg I, Kočić A, Štolfa Čamagajevac I. Physiological and biochemical effect of silver on the aquatic plant Lemna gibba L.: Evaluation of commercially available product containing colloidal silver. Aquat Toxicol 2019; 207:52-62. [PMID: 30521985 DOI: 10.1016/j.aquatox.2018.11.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/20/2018] [Accepted: 11/20/2018] [Indexed: 06/09/2023]
Abstract
This paper aims to evaluate the effects of a product containing colloidal silver in the aquatic environment, using duckweed Lemna gibba as a model plant. Therefore, growth parameters, photosynthetic pigments content and protein content as physiological indices were evaluated. Changes in the content of non-enzymatic antioxidants and activity of several antioxidant enzymes, alongside with the accumulation of hydrogen peroxide and lipid peroxidation end-products were assessed to explore the potential of colloidal silver to induce oxidative stress. The commercially available colloidal silver product contained a primary soluble form of silver. The treatment with colloidal silver resulted in significant physiological and biochemical changes in L. gibba plants and a consequent reduction of growth. Accumulation of silver caused altered nutrient balance in the plants as well as a significant decrease in photosynthetic pigments content and protein concentration. The antioxidative response of L. gibba plants to treatment with colloidal silver was inadequate to protect the plants from oxidative stress caused by metal accumulation. Silver caused concentration-dependent and time-dependent hydrogen peroxide accumulation as well as the elevation of lipid peroxidation levels in L. gibba plants. The use of commercially available products containing colloidal silver, and consequent accumulation of silver, both ionic and nanoparticle form in the environment, represents a potential source of toxicity to primary producers in the aquatic ecosystem.
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Affiliation(s)
- Martina Varga
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Janja Horvatić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Lara Barišić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Zdenko Lončarić
- Faculty of Agrobiotechnical Sciences, Josip Juraj Strossmayer University of Osijek, Ulica kralja Petra Svačića 1d, HR-31000, Osijek, Croatia
| | | | - Ina Erceg
- Rudjer Rošković Institute, Bijenička ulica 54, HR-10000, Zagreb, Croatia
| | - Aleksandra Kočić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Ivna Štolfa Čamagajevac
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000, Osijek, Croatia.
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Potter PM, Navratilova J, Rogers KR, Al-Abed SR. Transformation of Silver Nanoparticle Consumer Products during Simulated Usage and Disposal. Environ Sci Nano 2019; 6:592-598. [PMID: 31728194 PMCID: PMC6854907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Twenty-two silver nanoparticle (AgNP) consumer products (CPs) were analyzed with respect to their silver speciation. Three CPs and three lab-synthesized particles were selected to simulate environmental fate and transport by simulating their intended usage and disposal methods. Since many of these products are meant for ingestion, we simulated their usage by exposing them to human synthetic stomach fluid followed by exposure to wastewater sludge. We found that during the products individual exposure to wastewater sludge, the conversion rate of silver to AgCl and Ag2S was affected by both the amount of silver ion present and the properties of the AgNP. The rates of conversion of metallic silver to silver sulfide was heavily dependent on the particle size for the lab-synthesized particles, with 90 nm PVP-capped particles reacting to a much lesser extent than the 15 nm PVP-capped or the citrate-capped particles. We observed similar sulfidation rates on two of the tested CPs with the 15 nm lab-synthesized particles despite containing silver nanoparticles >5 times larger, indicating the presence of other influencing factors. Pre-treatment with synthetic stomach fluid modified the rates of Ag2S formation. Due to the variable composition of CPs and the conditions they are exposed to between manufacture, sale, use, and disposal, their final composition may be somewhat unpredictable in the environment. In the present study, we have achieved a more accurate approximation of the expected interactions between silver nanoparticle-containing CPs and environmental media by utilizing real CPs and evaluating them with solid phase and aqueous phase analytical techniques.
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Affiliation(s)
- Phillip M. Potter
- Oak Ridge Institute for Science and Education (ORISE), USEPA, Cincinnati, OH 45220, USA
| | - Jana Navratilova
- Oak Ridge Institute for Science and Education (ORISE), USEPA, RTP, NC 27709, USA
| | - Kim R. Rogers
- National Exposure Research Laboratory (NERL), USEPA, RTP, NC 27709, USA
| | - Souhail R. Al-Abed
- National Risk Management Research Laboratory (NRMRL), USEPA, Cincinnati, OH 45220, USA; Oak Ridge Institute for Science and Education (ORISE), USEPA, Cincinnati, OH 45220, USA
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