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Nam S, Hillyer MB, Condon BD, Lum JS, Richards MN, Zhang Q. Silver Nanoparticle-Infused Cotton Fiber: Durability and Aqueous Release of Silver in Laundry Water. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:13231-13240. [PMID: 32286814 DOI: 10.1021/acs.jafc.9b07531] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Although the application of silver nanoparticles to commercial antibacterial items is well-established, there have been increasing concerns that such particles might leach out, particularly into laundry water from textile products. A recently developed process wherein silver nanoparticles are synthesized in situ within the cotton fiber itself promises, however, to achieve the desired washing durability. In this study, the silver release behavior of the silver nanoparticle-infused cotton fabric during consecutive launderings in water and a detergent solution was analyzed. Silver nanoparticles (12 ± 3 nm in diameter) were uniformly produced throughout the entire volume of cotton fiber with a concentration of 3017 ± 56 mg/kg. A combination of colorimetric, spectroscopic, and elemental analyses showed (1) nonlinear silver release behavior, with a rapid release from externally formed nanoparticles during the initial washing and a plateau-like release from internally formed nanoparticles during extended washing, and (2) superior nanoparticle-leach resistance compared to those in commercial and laboratory-prepared textiles analyzed in the literature. The internal nanoparticles immobilized within cotton fiber exhibited persistent antibacterial activity after 50 home laundering cycles.
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Affiliation(s)
- Sunghyun Nam
- Southern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, New Orleans, Louisiana 70124, United States
| | - Matthew B Hillyer
- Southern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, New Orleans, Louisiana 70124, United States
| | - Brian D Condon
- Southern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, New Orleans, Louisiana 70124, United States
| | - June S Lum
- Chemical Biological Innovative Materials & Ensemble Development Team, U.S. Army Combat Capabilities Development Command Soldier Center, Natick, Massachusetts 01760, United States
| | - Molly N Richards
- Chemical Biological Innovative Materials & Ensemble Development Team, U.S. Army Combat Capabilities Development Command Soldier Center, Natick, Massachusetts 01760, United States
| | - Qingbo Zhang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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Taylor SE, Pearce CI, Chowdhury I, Kovarik L, Leavy I, Baum S, Bary AI, Flury M. Long-term accumulation, depth distribution, and speciation of silver nanoparticles in biosolids-amended soils. JOURNAL OF ENVIRONMENTAL QUALITY 2020; 49:1679-1689. [PMID: 33169390 DOI: 10.1002/jeq2.20156] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/28/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
Biosolids can be a source of metals and metal nanoparticles. The objective of this study was to quantify and characterize the accumulation and transport of silver (Ag) in a natural soil that has received agronomically recommended rates of biosolids as fertilizer from 1994 to 2017. Total Ag concentrations were measured in biosolids and soil samples collected from 0 to 10 cm between 1996 and 2017. The depth distribution of Ag in soil to 60-cm depth was measured in 2017. Electron microscopy, in combination with X-ray spectroscopy, and X-ray absorption spectroscopy were used to characterize the Ag. The Ag concentrations in the biosolids-amended soil increased steadily from 1996 until 2007, after which the concentrations leveled off at about 1.25 mg Ag kg-1 soil. This corresponded with a decrease of Ag concentrations in biosolids over time. The majority of the Ag (82%) was confined to the top 10 cm of the soil, small amounts (14%) were detected at 10-to-20-cm depth, and trace amounts (4%) were detected at 30-to-40-cm depth. The Ag in the biosolids was identified as S-containing nanoparticles (Ag2 S) with a diameter of 10-12 nm; however, in soil, the Ag concentrations were too low to allow identification of Ag speciation. This study shows that in a real-world field scenario, biosolids applied at agronomic rates represent a long-term, economically viable source of crop nutrients without increasing the concentration of total Ag in soil above a maximum of 1.5 mg Ag kg-1 . This concentration is below estimated ecotoxicity limits for Ag2 S in soil.
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Affiliation(s)
- Stephen E Taylor
- Dep. of Crop & Soil Sciences, Washington State Univ., Pullman, WA, 99164, USA
- Dep. of Crop & Soil Sciences, Washington State Univ., Puyallup, WA, 98371, USA
- Energy and Environment Directorate, Pacific Northwest National Lab., Richland, WA, 99352, USA
| | - Carolyn I Pearce
- Dep. of Crop & Soil Sciences, Washington State Univ., Pullman, WA, 99164, USA
- Energy and Environment Directorate, Pacific Northwest National Lab., Richland, WA, 99352, USA
| | - Indranil Chowdhury
- Dep. of Civil & Environmental Engineering, Washington State Univ., Pullman, WA, 99164, USA
| | - Libor Kovarik
- Physical and Computational Sciences Directorate, Pacific Northwest National Lab., Richland, WA, 99352, USA
| | - Ian Leavy
- Energy and Environment Directorate, Pacific Northwest National Lab., Richland, WA, 99352, USA
| | - Steven Baum
- Energy and Environment Directorate, Pacific Northwest National Lab., Richland, WA, 99352, USA
| | - Andy I Bary
- Dep. of Crop & Soil Sciences, Washington State Univ., Pullman, WA, 99164, USA
- Dep. of Crop & Soil Sciences, Washington State Univ., Puyallup, WA, 98371, USA
| | - Markus Flury
- Dep. of Crop & Soil Sciences, Washington State Univ., Pullman, WA, 99164, USA
- Dep. of Crop & Soil Sciences, Washington State Univ., Puyallup, WA, 98371, USA
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53
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Urstoeger A, Wimmer A, Kaegi R, Reiter S, Schuster M. Looking at Silver-Based Nanoparticles in Environmental Water Samples: Repetitive Cloud Point Extraction Bridges Gaps in Electron Microscopy for Naturally Occurring Nanoparticles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:12063-12071. [PMID: 32846092 DOI: 10.1021/acs.est.0c02878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The growing use of silver-based nanoparticles (Ag-b-NPs) in everyday products goes hand in hand with their release into the environment, resulting in ng L-1 traces in natural water bodies. In order to assess their fate, possible transformations and ecotoxicology-essential information to proper risk assessment-particle size, shape, and chemical composition have to be determined. Transmission electron microscopy coupled with energy dispersive X-ray spectroscopy (TEM-EDX) is a powerful tool for determining these particle characteristics, but it requires high particle concentrations in order to produce statistically reliable results. In this study, we will present the extraction of Ag-b-NPs at environmentally relevant concentrations down to 5 ng L-1 from artificial as well as environmental water samples via cloud point extraction on a repetitive basis. The combination with an on-grid centrifugation technique ensures an efficient concentration and deposition of the extracted particles onto the TEM grid for subsequent TEM-EDX measurements. Furthermore, electron microscopy investigations were supplemented by single particle inductively coupled plasma mass spectrometry (sp-ICP-MS) measurements. Ag-b-NPs were successfully visualized and characterized at environmentally relevant concentrations of 5 ng L-1 with TEM-EDX and sp-ICP-MS measurements. Their size, shape, and chemical composition were not affected by the sample preparation.
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Affiliation(s)
- Alexander Urstoeger
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching 85748, Germany
| | - Andreas Wimmer
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching 85748, Germany
| | - Ralf Kaegi
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, Dübendorf 8600, Switzerland
| | - Simon Reiter
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching 85748, Germany
| | - Michael Schuster
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching 85748, Germany
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54
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de Oliveira IM, Cavallin MD, Corrêa DEDC, Razera A, Mariano DD, Ferreira F, Romano MA, Marino Romano R. Proteomic Profiles of Thyroid Gland and Gene Expression of the Hypothalamic-Pituitary-Thyroid Axis Are Modulated by Exposure to AgNPs during Prepubertal Rat Stages. Chem Res Toxicol 2020; 33:2605-2622. [PMID: 32972137 DOI: 10.1021/acs.chemrestox.0c00250] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Silver nanoparticles (AgNPs) have potent antimicrobial activity and, for this reason, are incorporated into a variety of products, raising concern about their potential risks and impacts on human health and the environment. The developmental period is highly dependent on thyroid hormones (THs), and puberty is a sensitive period, where changes in the hormonal environment may have permanent effects. We evaluated the hypothalamic-pituitary (HP)-thyroid axis after exposure to low doses of AgNPs using a validated protocol to assess pubertal development and thyroid function in immature male rats. For stimulatory events of the HP-thyroid axis, we observed an increase in the expression of Trh mRNA and serum triiodothyronine. Negative feedback reduced the hypothalamic expression of Dio2 mRNA and increased the expression of Thra1, Thra2, and Thrb2 mRNAs. In the pituitary, there was a reduced expression of Mct-8 mRNA and Dio2 mRNA. For peripheral T3-target tissues, a reduced expression of Mct-8 mRNA was observed in the heart and liver. An increased expression of Dio3 mRNA was observed in the heart and liver, and an increased expression of Thrb2 mRNA was observed in the liver. The quantitative proteomic profile of the thyroid gland indicated a reduction in cytoskeletal proteins (Cap1, Cav1, Lasp1, Marcks, and Tpm4; 1.875 μg AgNP/kg) and a reduction in the profile of chaperones (Hsp90aa1, Hsp90ab1, Hspa8, Hspa9, P4hb) and proteins that participate in the N-glycosylation process (Ddost, Rpn1 and Rpn2) (15 μg AgNP/kg). Exposure to low doses of AgNPs during the window of puberty development affects the regulation of the HP-thyroid axis with further consequences in thyroid gland physiology.
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Affiliation(s)
- Isabela Medeiros de Oliveira
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, 85040-080 Parana, Brazil
| | - Mônica Degraf Cavallin
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, 85040-080 Parana, Brazil
| | - Deborah Elzita do Carmo Corrêa
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, 85040-080 Parana, Brazil
| | - Amanda Razera
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, 85040-080 Parana, Brazil
| | - Danielle Dobner Mariano
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, 85040-080 Parana, Brazil
| | - Francine Ferreira
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, 85040-080 Parana, Brazil
| | - Marco Aurélio Romano
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, 85040-080 Parana, Brazil
| | - Renata Marino Romano
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, 85040-080 Parana, Brazil
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55
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Zorraquín-Peña I, Cueva C, González de Llano D, Bartolomé B, Moreno-Arribas MV. Glutathione-Stabilized Silver Nanoparticles: Antibacterial Activity against Periodontal Bacteria, and Cytotoxicity and Inflammatory Response in Oral Cells. Biomedicines 2020; 8:E375. [PMID: 32977686 PMCID: PMC7598685 DOI: 10.3390/biomedicines8100375] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 09/10/2020] [Accepted: 09/22/2020] [Indexed: 12/16/2022] Open
Abstract
Silver nanoparticles (AgNPs) have been proposed as new alternatives to limit bacterial dental plaque because of their antimicrobial activity. Novel glutathione-stabilized silver nanoparticles (GSH-AgNPs) have proven powerful antibacterial properties in food manufacturing processes. Therefore, this study aimed to evaluate the potentiality of GSH-AgNPs for the prevention/treatment of oral infectious diseases. First, the antimicrobial activity of GSH-AgNPs against three oral pathogens (Porphyromonas gingivalis, Fusobacterium nucleatum, and Streptococcus mutans) was evaluated. Results demonstrated the efficiency of GSH-AgNPs in inhibiting the growth of all bacteria, especially S. mutans (IC50 = 23.64 μg/mL, Ag concentration). Second, GSH-AgNPs were assayed for their cytotoxicity (i.e., cell viability) toward a human gingival fibroblast cell line (HGF-1), as an oral epithelial model. Results indicated no toxic effects of GSH-AgNPs at low concentrations (≤6.16 µg/mL, Ag concentration). Higher concentrations resulted in losing cell viability, which followed the Ag accumulation in cells. Finally, the inflammatory response in the HGF-1 cells after their exposure to GSH-AgNPs was measured as the production of immune markers (interleukins 6 and 8 (IL-6 and IL-8) and tumor necrosis factor-alpha (TNF-α)). GSH-AgNPs activates the inflammatory response in human gingival fibroblasts, increasing the production of cytokines. These findings provide new insights for the use of GSH-AgNPs in dental care and encourage further studies for their application.
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Affiliation(s)
| | | | | | | | - M. Victoria Moreno-Arribas
- Institute of Food Science Research (CIAL), CSIC-UAM, C/Nicolás Cabrera, 9, Campus de Cantoblanco, 28049 Madrid, Spain; (I.Z.-P.); (C.C.); (D.G.d.L.); (B.B.)
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56
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Johnson CR, Tran MN, Michelitsch LM, Abraham S, Hu J, Gray KA, Hartmann EM. Nano-enabled, antimicrobial toothbrushes - How physical and chemical properties relate to antibacterial capabilities. JOURNAL OF HAZARDOUS MATERIALS 2020; 396:122445. [PMID: 32298860 DOI: 10.1016/j.jhazmat.2020.122445] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 02/17/2020] [Accepted: 02/29/2020] [Indexed: 05/06/2023]
Abstract
Over the past two decades, Ag and Zn nanoparticles have been integrated into various consumer products as a biocide. While some nano-enabled consumer products have been shown to have antibacterial properties, their antibacterial efficacy as well as the human and environmental health outcomes are not fully known. In this study, we examine a nanoparticle-enabled product that also serves as a conduit for human exposure to bacteria: toothbrushes. We utilize a combination of chemical analyses, laboratory experiments, and microscopy to characterize the nano-enabled toothbrush bristles. Our analysis showed the majority of measured Ag and Zn particles ranged from approximately 50 to 100 nm in size and were located on the surface and within bristles. During simulated brushing, antimicrobial bristles released both Ag and Zn, the majority of which was released in particulate form. While our results demonstrate that antimicrobial bristles have enhanced bactericidal properties compared to control samples, we also show that the surface topography influences nanoparticle retention, microbial adhesion, and bactericidal activity. We thus conclude that Ag or Zn content alone is insufficient to predict antimicrobial properties, which are further governed by the bioavailability of Ag or Zn at the bristle surface.
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Affiliation(s)
- Clayton R Johnson
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, 60208, United States.
| | - Mia Nhu Tran
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, 60208, United States
| | - Lisa-Marie Michelitsch
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, 60208, United States
| | - Simi Abraham
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, 60208, United States
| | - Jinglin Hu
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, 60208, United States
| | - Kimberly A Gray
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, 60208, United States
| | - Erica M Hartmann
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, 60208, United States.
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57
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Shi JH, Axson JL, Bergin IL, Ault AP. Nanoparticle Digestion Simulator Reveals pH-Dependent Aggregation in the Gastrointestinal Tract. Anal Chem 2020; 92:12257-12264. [PMID: 32786449 DOI: 10.1021/acs.analchem.0c01844] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Determining the physicochemical properties of ingested nanoparticles within the gastrointestinal tract (GIT) is critical for evaluating the impact of environmental exposure and potential for nanoparticle drug delivery. However, it is challenging to predict nanoparticle physicochemical properties at the point of intestinal absorption due to the changing chemical environments within the GIT. Herein, a dynamic nanoparticle digestion simulator (NDS) was constructed to examine nanoparticle evolution due to changing pH and salt concentrations in the stomach and upper intestine. This multicompartment, flow-through system simulates digestion by transferring gastrointestinal fluids and digestive secretions at physiologically relevant time scales and flow rates. Pronounced differences in aggregation and aggregate stability were observed with silver nanoparticles (citrate-coated) with an initial hydrodynamic diameter (Dh) of 24.6 ± 0.4 nm examined under fasted (pH 2) and fed (pH 5) gastric conditions using nanoparticle tracking analysis (NTA) for size distributions and transmission electron microscopy with energy dispersive X-ray spectroscopy (TEM-EDX) for morphology and elemental composition. Under fasted stomach conditions, particles aggregated to Dh = 130 ± 10 nm and remained as large aggregates in the upper intestinal compartments (duodenum and jejunum) ending with Dh = 110 ± 20 nm and a smaller mode at 59 ± 8 nm. In contrast, under fed conditions, nanoparticles aggregated to 60 ± 10 nm in the stomach, then disaggregated to individual nanoparticles (26 ± 2 nm) in the intestinal compartments. The NDS provides an analytical approach for studying nanoparticle physicochemical modifications within the GIT and the impacts of intentionally and unintentionally ingested nanoparticles.
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Affiliation(s)
- Jia H Shi
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jessica L Axson
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ingrid L Bergin
- Unit for Laboratory Animal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, United States
| | - Andrew P Ault
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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58
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Samutrtai P, Krobthong S, Roytrakul S. Proteomics for Toxicological Pathways Screening: A Case Comparison of Low-concentration Ionic and Nanoparticulate Silver. ANAL SCI 2020; 36:981-987. [PMID: 32115467 DOI: 10.2116/analsci.20p018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
LC-MS/MS-based proteomics coupled with an online bioinformatics platform was under evaluation for applicability to toxicological pathways evaluation at low cytotoxic concentration (LC10) of silver nanoparticles (AgNP) and ionic silver in human carcinoma cells after 48 h of exposure. Significantly, differentially-expressed proteins (One-way ANOVA, p < 0.05) with more than 4-fold compared to the control were subjected to functional pathway analysis by STITCH. SOTA clustering indicated a similarity of the protein expression between AgNP and the control group. We established a resemblance of proteins in the cell cycle pathway affected by both Ag substances. The differences in the toxicological pathways from AgNO3 were involved in the cellular organization and metabolic process of macromolecules, while the nucleic acid metabolic process was altered by AgNP. The present study supported the practicability of LC-MS/MS-based proteomics coupled with STITCH for the identification of toxicological pathways in both silvers. We appraised this platform technology to be promising and powerful for a toxicological screening of other new substances.
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Affiliation(s)
- Pawitrabhorn Samutrtai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA)
| | - Sucheewin Krobthong
- Proteomics Research Laboratory, Genome Technology Research Unit, BIOTEC, National Science and Technology Development Agency
| | - Sittiruk Roytrakul
- Proteomics Research Laboratory, Genome Technology Research Unit, BIOTEC, National Science and Technology Development Agency
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59
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Wu F, Seib M, Mauel S, Klinzing S, Hicks AL. A citizen science approach estimating titanium dioxide released from personal care products. PLoS One 2020; 15:e0235988. [PMID: 32726346 PMCID: PMC7390335 DOI: 10.1371/journal.pone.0235988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/25/2020] [Indexed: 11/19/2022] Open
Abstract
Titanium dioxide (TiO2) is a common component in personal care products (PCP), which through use enters the wastewater treatment plant (WWTP) and ultimately the environment. A citizen science approach is utilized here to inform the prevalence and usage of TiO2 containing PCP on a household scale, which generates information as to the quantity of TiO2 entering the WWTP, and the portion ultimately discharged to the environment. Meanwhile, citizen science sourced inventories were generated to estimate the quantity of TiO2, and potentially nanoscale TiO2 entering the WWTP from consumer products and to determine which products had the greatest contribution. The estimated values were compared with water samples from the WWTP which quantified the amount of total titanium present using ICP-AES. These values were at a similar level with other top-down estimation approaches and suggest that a citizen science approach is valid to estimate the loading of TiO2, and potentially other emerging contaminants, while at the same time engaging with community stakeholders.
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Affiliation(s)
- Fan Wu
- School of Environment, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, China
- Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Matt Seib
- Madison Metropolitan Sewerage District, Madison, WI, United States of America
| | - Samantha Mauel
- Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Sydney Klinzing
- Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Andrea L. Hicks
- Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, United States of America
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60
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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. THE SCIENCE OF THE TOTAL ENVIRONMENT 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] [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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61
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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] [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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62
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Wu J, Wang G, Vijver MG, Bosker T, Peijnenburg WJGM. Foliar versus root exposure of AgNPs to lettuce: Phytotoxicity, antioxidant responses and internal translocation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 261:114117. [PMID: 32062092 DOI: 10.1016/j.envpol.2020.114117] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/22/2020] [Accepted: 01/31/2020] [Indexed: 05/25/2023]
Abstract
Whether toxicity of silver nanoparticles (AgNPs) to organisms originates from the nanoparticles themselves or from the dissolved Ag-ions is still debated, with the majority of studies claiming that extracellular release of Ag-ions is the main cause of toxicity. The objective of this study was to determine the contributions of both particles and dissolved ions to toxic responses, and to better understand the underlying mechanisms of toxicity. In addition, the pathways of AgNPs exposure to plants might play an important role and therefore are explicitly studied as well. We systematically assessed the phytotoxicity, internalization, biodistribution, and antioxidant responses in lettuce (Lactuca sativa) following root or foliar exposure to AgNPs and ionic Ag at various concentrations. For each endpoint the relative contribution of the particle-specific versus the ionic form was quantified. The results reveal particle-specific toxicity and uptake of AgNPs in lettuce as the relative contribution of particulate Ag accounted for more than 65% to the overall toxicity and the Ag accumulation in whole plant tissues. In addition, particle toxicity is shown to originate from the accumulation of Ag in plants by blocking nutrient transport, while ion toxicity is likely due to the induction of excess ROS production. Root exposure induced higher toxicity than foliar exposure at comparable exposure levels. Ag was found to be taken up and subsequently translocated from the exposed parts of plants to other portions regardless of the exposure pathway. These findings suggest particle related toxicity, and demonstrate that the accumulation and translocation of silver nanoparticles need to be considered in assessment of environmental risks and of food safety following consumption of plants exposed to AgNPs by humans.
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Affiliation(s)
- Juan Wu
- Institute of Environmental Sciences (CML), Leiden University, PO Box 9518, 2300 RA, Leiden, the Netherlands.
| | - Guiyin Wang
- Institute of Environmental Sciences (CML), Leiden University, PO Box 9518, 2300 RA, Leiden, the Netherlands; College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Martina G Vijver
- Institute of Environmental Sciences (CML), Leiden University, PO Box 9518, 2300 RA, Leiden, the Netherlands
| | - Thijs Bosker
- Institute of Environmental Sciences (CML), Leiden University, PO Box 9518, 2300 RA, Leiden, the Netherlands; Leiden University College, Leiden University, P.O. Box 13228, 2501 EE, The Hague, the Netherlands
| | - Willie J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, PO Box 9518, 2300 RA, Leiden, the Netherlands; National Institute of Public Health and the Environment, Center for the Safety of Substances and Products, P. O. Box 1, 3720 BA, Bilthoven, the Netherlands
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63
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Mukherjee M, Gangopadhyay K, Das R, Purkayastha P. Development of Non-ionic Surfactant and Protein-Coated Ultrasmall Silver Nanoparticles: Increased Viscoelasticity Enables Potency in Biological Applications. ACS OMEGA 2020; 5:8999-9006. [PMID: 32337464 PMCID: PMC7178788 DOI: 10.1021/acsomega.0c00825] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
To enhance the interactivity with biological cells, we developed ultrasmall (5 nm in diameter) Ag NPs coated with a mixture of Tween-20 (Tw-20) surfactant and human serum albumin (HSA) or hemoglobin (Hb) proteins. These were tested with cancerous and healthy cell lines to investigate the therapeutic applicability. Using the established concept of generation of reactive oxygen species (ROS) and the ROS-induced oxidative stress in carcinogenic cells by Ag NPs, we found that the presently synthesized Ag NPs selectively destroyed the cancerous cells. A mixture of Tw-20 with protein, where the surfactant was in large excess, created a coating over the Ag NPs resulting weaker protein-protein interactions and facilitating interfacial protein-surfactant interactions, which leads to an increase in the film viscoelasticity to enhance the stability of the Ag NPs and cell viability. Moreover, this concept has been applied to drug delivery using a model fluorophore (fluorescein) on Ag NPs to explore the prospects in photodynamic therapy. The results are encouraging and deserve further investigation.
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Affiliation(s)
- Mousumi Mukherjee
- Department
of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research
(IISER) Kolkata, Mohanpur 741246, West Bengal, India
| | - Kaustav Gangopadhyay
- Department
of Biological Sciences, Indian Institute
of Science Education and Research (IISER) Kolkata, Mohanpur 741246, West Bengal, India
| | - Rahul Das
- Department
of Biological Sciences, Indian Institute
of Science Education and Research (IISER) Kolkata, Mohanpur 741246, West Bengal, India
| | - Pradipta Purkayastha
- Department
of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research
(IISER) Kolkata, Mohanpur 741246, West Bengal, India
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64
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Kobos L, Alqahtani S, Xia L, Coltellino V, Kishman R, McIlrath D, Perez-Torres C, Shannahan J. Comparison of silver nanoparticle-induced inflammatory responses between healthy and metabolic syndrome mouse models. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2020; 83:249-268. [PMID: 32281499 PMCID: PMC7493428 DOI: 10.1080/15287394.2020.1748779] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Silver nanoparticles (AgNPs) are utilized in surgical implants and medical textiles, thus providing access to the circulation. While research has been conducted primarily in healthy models, AgNP-induced toxicity evaluations in disease conditions are critical, as many individuals have preexisting conditions. Specifically, over 20% of United States adults suffer from metabolic syndrome (MetS). It was hypothesized that MetS may increase susceptibility to AgNP-mediated toxicity due to induction of differential inflammation and altered biodistribution. Mice were injected with 2 mg/kg AgNPs, and organs assessed for inflammatory gene expression (TNF-α, CXCL1, CXCL2, CCL2, TGF-β, HO-1, IL-4, IL-13), and Ag content. AgNPs were determined to induce differential inflammation in healthy and MetS mice. While AgNP exposure increased TNF-α, CXCL1, TGF-β, HO-1, and IL-4 expression within healthy mouse spleens, MetS-treated animals demonstrated decreased CXCL1, IL-4, and IL-13 expression. Healthy and MetS mice livers exhibited similar inflammatory responses to one another. AgNPs localized primarily to the liver and spleen, although Ag was present in all examined organs. In organs of minor AgNP deposition, such as kidney, gene expression was variable. Induction of inflammatory genes did not correspond with biodistribution, suggesting disease-related variations in AgNP-mediated adverse responses. These findings indicate that disease may influence inflammation and biodistribution, impacting AgNP clinical applications.
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Affiliation(s)
- Lisa Kobos
- School of Health Sciences, College of Human and Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Saeed Alqahtani
- School of Health Sciences, College of Human and Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
- National Center for Pharmaceuticals, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11461, Saudi Arabia
| | - Li Xia
- School of Health Sciences, College of Human and Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Vincent Coltellino
- School of Health Sciences, College of Human and Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Riley Kishman
- School of Health Sciences, College of Human and Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Daniel McIlrath
- School of Health Sciences, College of Human and Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Carlos Perez-Torres
- School of Health Sciences, College of Human and Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Jonathan Shannahan
- School of Health Sciences, College of Human and Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
- Address correspondence to: Dr. Jonathan Shannahan, School of Health Sciences, College of Human and Health Sciences, Purdue University, 550 Stadium Mall Dr., West Lafayette, IN, 47907, USA.
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65
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Silver nanoparticles, research and development in Mexico: a bibliometric analysis. Scientometrics 2020. [DOI: 10.1007/s11192-020-03367-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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66
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Kalia A, Manchanda P, Bhardwaj S, Singh G. Biosynthesized silver nanoparticles from aqueous extracts of sweet lime fruit and callus tissues possess variable antioxidant and antimicrobial potentials. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1735420] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Department of Soil Science, College of Agriculture, Punjab Agricultural University, Ludhiana, India
| | - Pooja Manchanda
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, India
| | - Shiwani Bhardwaj
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, India
| | - Gurupkar Singh
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, India
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67
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The role and influence of hydrogeochemistry in the behaviour and fate of silver nanoparticles in freshwater systems. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2130-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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68
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Yuan B, Sui M, Lu H, Wang J, Qin J. The combined effect of light irradiation and chloride on the physicochemical properties of silver nanoparticles. RSC Adv 2020; 10:228-235. [PMID: 35492535 PMCID: PMC9047535 DOI: 10.1039/c9ra09261g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/10/2019] [Indexed: 11/21/2022] Open
Abstract
The evolution of various properties of Ag NPs during light irradiation in Cl−-containing water were investigated, and the mechanism was deeply studied.
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Affiliation(s)
- Bojie Yuan
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Minghao Sui
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Hongtao Lu
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Jingyu Wang
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Jie Qin
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
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69
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Tan Z, Guo X, Yin Y, Wang B, Bai Q, Li X, Liu J, Jiang G. Freezing Facilitates Formation of Silver Nanoparticles under Natural and Simulated Sunlight Conditions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:13802-13811. [PMID: 31697066 DOI: 10.1021/acs.est.9b05926] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Freezing is essential in the light-mediated transformation of organic pollutants. However, the effects of the freezing process on the reduction of Ag+ by natural organic matter (NOM) remains unclear, causing significant uncertainties in the natural formation of silver nanoparticles (AgNPs). This study investigated the sunlight-induced reduction of Ag+ by NOM under natural or controlled freezing processes. Natural (outdoor) freezing experiments demonstrated intense aggregation and precipitation of AgNPs in three aqueous media, including a NOM solution and two river water samples, under natural sunlight irradiation. Indoor experiments under simulated sunlight irradiation and controlled freezing processes showed that freezing at -20 °C and repeated freeze-thaw cycles (-20 to 4 °C) drastically accelerated the formation and growth of AgNPs compared to maintenance at 4 °C. Finally, under the natural freezing process, commercial AgNPs were found to influence the redox reduction of Ag+ probably through a reduction in dissolution rates and homoaggregation with AgNPs newly formed in the river water samples. Additionally, the enhancement effect of freezing on AgNP formation was confirmed in the presence of Ag+ and AgNPs both at environmentally relevant concentration levels, especially upon light irradiation. This work emphasizes the importance of freezing processes on the natural formation of AgNPs.
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Affiliation(s)
- Zhiqiang Tan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
| | - Xiaoru Guo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yongguang Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Bowen Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
- School of Environmental Sciences , Liaoning University , Shenyang , Liaoning 110036 , China
| | - Qingsheng Bai
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Xia Li
- School of Environmental Sciences , Liaoning University , Shenyang , Liaoning 110036 , China
| | - Jingfu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology , Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
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70
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Hussain Z, Thu HE, Sohail M, Khan S. Hybridization and functionalization with biological macromolecules synergistically improve biomedical efficacy of silver nanoparticles: Reconceptualization of in-vitro, in-vivo and clinical studies. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101169] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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71
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Wimmer A, Beyerl J, Schuster M. Copper Drinking Water Pipes as a Previously Undocumented Source of Silver-Based Nanoparticles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:13293-13301. [PMID: 31593441 DOI: 10.1021/acs.est.9b04271] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Wastewater streams are widely known to release silver-based nanoparticles (Ag-b-NPs) into the environment with a plethora of unknown consequences. Until recently, studies have commonly associated Ag-b-NP sources with products that contain these NPs for antimicrobial reasons, such as fabrics, cosmetics, and medical products. However, our study reveals that there is a thus far completely undocumented source of Ag-b-NPs: copper drinking water pipes. We applied cloud point extraction hyphenated to electrothermal atomic absorption spectrometry or single-particle inductively coupled plasma mass spectrometry to analyze the concentration and perform size-selective quantification of Ag-b-NPs in tap water passing through copper pipes. Up to 83 ng of total silver and 25 ng of Ag-b-NPs were present in tap water samples per liter, which resulted in an NP proportion of approximately 30% of total silver. In total, 96% of the measurable particle sizes ranged from 10 to 36 nm. Additionally, 53 μg of copper was released per liter tap water on average. The measurements included tap water from different sampling days and from four different buildings with varying ages, whereas Ag-b-NPs could be detected in the tap water of two buildings. Silver traces in the copper pipe material of 27.5 ± 4.4 μg g-1 were found to be responsible for the release of nanoparticulate silver into the tap water.
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Affiliation(s)
- Andreas Wimmer
- Division of Analytical Chemistry, Department of Chemistry , Technical University of Munich , Garching 85748 , Germany
| | - Jessica Beyerl
- Division of Analytical Chemistry, Department of Chemistry , Technical University of Munich , Garching 85748 , Germany
| | - Michael Schuster
- Division of Analytical Chemistry, Department of Chemistry , Technical University of Munich , Garching 85748 , Germany
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72
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Wamucho A, Unrine JM, Kieran TJ, Glenn TC, Schultz CL, Farman M, Svendsen C, Spurgeon DJ, Tsyusko OV. Genomic mutations after multigenerational exposure of Caenorhabditis elegans to pristine and sulfidized silver nanoparticles. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:113078. [PMID: 31479814 DOI: 10.1016/j.envpol.2019.113078] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/31/2019] [Accepted: 08/17/2019] [Indexed: 06/10/2023]
Abstract
Our previous study showed heritable reproductive toxicity in the nematode Caenorhabditis elegans after multigenerational exposure to AgNO3 and silver nanoparticles (Ag-NPs). The aim of this study was to determine whether such inheritable effects are correlated with induced germline mutations in C. elegans. Individual C. elegans lineages were exposed for 10 generations to equitoxic concentrations at EC30 of AgNO3, Ag-NPs, and sulfidized Ag-NPs (sAg-NPs), a predominant environmentally transformed product of pristine Ag-NPs. The mutations were detected via whole genome DNA sequencing approach by comparing F0 and F10 generations. An increase in the total number of variants, though not statistically significant, was observed for all Ag treatments and the variants were mainly contributed by single nucleotide polymorphisms (SNPs). This potentially contributed towards reproductive as well as growth toxicity shown previously after ten generations of exposure in every Ag treatment. However, despite Ag-NPs and AgNO3 inducing stronger reproductive toxicity than sAg-NPs, exposure to sAg-NPs resulted in higher mutation accumulation with significant increase in the number of transversions. Thus our results suggest that other mechanisms of inheritance, such as epigenetics, may be at play in Ag-NP- and AgNO3-induced multigenerational and transgenerational reproductive toxicity.
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Affiliation(s)
- Anye Wamucho
- Department of Plant and Soil Sciences, University of Kentucky, 1100 S. Limestone St., Lexington, KY 40546, USA; Department of Toxicology and Cancer Biology, University of Kentucky, 1095 V.A. Drive, 306 Health Science Research Building, Lexington, KY 40536, USA
| | - Jason M Unrine
- Department of Plant and Soil Sciences, University of Kentucky, 1100 S. Limestone St., Lexington, KY 40546, USA; Department of Toxicology and Cancer Biology, University of Kentucky, 1095 V.A. Drive, 306 Health Science Research Building, Lexington, KY 40536, USA
| | - Troy J Kieran
- Department of Genetics, University of Georgia, 120 Green St., GA 30602-7223, USA
| | - Travis C Glenn
- Department of Genetics, University of Georgia, 120 Green St., GA 30602-7223, USA
| | - Carolin L Schultz
- Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Crowmarsh-Gifford, Wallingford, Oxon OX10 8BB, UK; Department of Materials, Oxford University, Begbroke Science Park, Begbroke Hill, Yarnton, Oxford OX5 1PF, UK
| | - Mark Farman
- Department of Plant Pathology, 225 Plant Science Building, Lexington, KY 40546, USA
| | - Claus Svendsen
- Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Crowmarsh-Gifford, Wallingford, Oxon OX10 8BB, UK
| | - David J Spurgeon
- Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Crowmarsh-Gifford, Wallingford, Oxon OX10 8BB, UK
| | - Olga V Tsyusko
- Department of Plant and Soil Sciences, University of Kentucky, 1100 S. Limestone St., Lexington, KY 40546, USA; Department of Toxicology and Cancer Biology, University of Kentucky, 1095 V.A. Drive, 306 Health Science Research Building, Lexington, KY 40536, USA.
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73
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Prasath S, Palaniappan K. Is using nanosilver mattresses/pillows safe? A review of potential health implications of silver nanoparticles on human health. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:2295-2313. [PMID: 30671691 DOI: 10.1007/s10653-019-00240-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/02/2019] [Indexed: 06/09/2023]
Abstract
Human exposure to engineered nanoparticles has become inevitable in today's extensive commercial use and large-scale production of engineered nanoparticles. Even though several studies have characterised the exposure to nanomaterials during wakeful state (related to occupational exposures and exposures from commercially available particles), very few studies on human exposure during sleep exist. As the study of exposure to all possible nanomaterials during sleep is extensive, this study focuses on exposure to specifically silver nanoparticles which are present in beddings and mattresses. The reasoning behind the use of silver nanoparticles in bedding and related materials, possible routes of entry to various population groups in several sleep positions, exposure characterisation and toxicity potential of such silver nanoparticles are reviewed in this study. The toxicity potential of silver nanoparticles in vivo tests with relation to mammals and in vitro tests on human cells has been tabulated to understand the risks associated during oral, dermal and inhalation exposure to silver nanoparticles. The exposure to humans with regard to dermal absorption and oral intake has been summarised. Although potential inhalation exposure to silver nanoparticles is increasing, only a few studies address the possible toxic effect of inhaled silver particles. Determination of exposure to silver nanoparticles in beddings is a topic that has been less researched, and this review aims to provide background information for future research and help establish a comprehensive risk assessment during sleep in the times of increasing usage of nanoparticles in our daily activities. Despite the current limitations of our understanding, risk assessments must utilise the available data and apply extrapolation procedures in the face of uncertainty, in order to address the needs of regulatory programs. This would enable safe use of the antimicrobial properties of silver nanoparticles without negatively impacting human health. Until then, it would be better to adopt a conservative approach on the usage of silver nanoparticles in daily used commercial items.
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Affiliation(s)
| | - Kavitha Palaniappan
- University of Newcastle, Callahan, Australia
- University of Newcastle, Singapore, Singapore
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74
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Khaksar M, Vasileiadis S, Sekine R, Brunetti G, Scheckel KG, Vasilev K, Lombi E, Donner E. Chemical characterisation, antibacterial activity, and (nano)silver transformation of commercial personal care products exposed to household greywater. ENVIRONMENTAL SCIENCE. NANO 2019; 6:3027-3028. [PMID: 32021691 PMCID: PMC6997944 DOI: 10.1039/c9en00738e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The objective of this study was to test the original speciation of silver (Ag) in eight different commercially available personal care products and investigate the chemical transformation of Ag during exposure to two types of synthetic greywater. The antimicrobial activity of the products was examined to determine the relationship between Ag content and speciation with the antibacterial functionality of the products. The Ag content of each product was quantified and X-ray absorption near-edge structure (XANES) analysis was used to investigate the initial speciation in the products and the changes occurring upon mixture with greywater. The results showed that the total Ag concentration in the products ranged from 17 to 30 mg kg-1, and was usually below the value reported on the label. Analyses revealed the complexity of Ag speciation in these products and highlighted the importance of characterisation studies to help elucidate the potential risks of nano-Ag in the environment. The antibacterial results confirmed that the antibacterial efficacy of the products depends on the concentration, form and speciation of Ag in the products, but is also significantly affected by product formulation. For instance, many of the products contained additional bactericidal ingredients, making it difficult to determine how much of the bactericidal effect was due directly to the Ag content/species. This paper offers some suggestions for standard methodologies to facilitate cross-comparison of potential risks across different studies and nano-enabled products.
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Affiliation(s)
- Maryam Khaksar
- Future Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia
| | - Sotirios Vasileiadis
- Future Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, 41500, Greece
| | - Ryo Sekine
- Future Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia
- Environmental Futures Research Institute, Griffith University, Gold Coast Campus, Southport, QLD 4222, Australia
| | - Gianluca Brunetti
- Future Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia
| | - Kirk G Scheckel
- National Risk Management Research Laboratory, US Environmental Protection Agency, 5995 Centre Hill Avenue, Cincinnati, OH 45224, USA
| | - Krasimir Vasilev
- School of Engineering, University of South Australia, Building J, Mawson Lakes Campus, South Australia 5095, Australia
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia
| | - Erica Donner
- Future Industries Institute, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia
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75
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Loh TY, Hendricks AJ, Hsiao JL, Shi VY. Undergarment and Fabric Selection in the Management of Hidradenitis Suppurativa. Dermatology 2019; 237:119-124. [PMID: 31466052 DOI: 10.1159/000501611] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 06/19/2019] [Indexed: 11/19/2022] Open
Abstract
Hidradenitis suppurativa (HS) is a chronic inflammatory condition manifesting as recurrent and exquisitely painful nodules in intertriginous regions. The role of mechanical stress in HS pathogenesis is gaining attention, as factors including intertriginous distribution of lesions, obesity, sweating, and suboptimal clothing contribute to increased friction and exacerbation of disease. Undergarment and clothing selection are often-overlooked components of HS management and should be addressed with patients as practical lifestyle changes that can decrease the frequency of disease flares and reduce symptoms of pain and irritation at involved sites. Selection of breathable and absorbent fabrics can also aid in reducing microbial colonization, sweat retention, and odor. This discussion is based on expert recommendations and aims to provide practitioners with the rationale for appropriate undergarment and clothing selection for HS patients. We propose practical principles for choosing undergarment design and fabrics for breathability, absorbency, and skin pressure reduction.
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Affiliation(s)
- Tiffany Y Loh
- Division of Dermatology, University of Arizona, Tucson, Arizona, USA
| | | | - Jennifer L Hsiao
- Division of Dermatology, University of California Los Angeles, Los Angeles, California, USA
| | - Vivian Yan Shi
- Division of Dermatology, University of Arizona, Tucson, Arizona, USA,
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76
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Fasbender S, Zimmermann L, Cadeddu RP, Luysberg M, Moll B, Janiak C, Heinzel T, Haas R. The Low Toxicity of Graphene Quantum Dots is Reflected by Marginal Gene Expression Changes of Primary Human Hematopoietic Stem Cells. Sci Rep 2019; 9:12028. [PMID: 31427693 PMCID: PMC6700176 DOI: 10.1038/s41598-019-48567-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 08/06/2019] [Indexed: 11/23/2022] Open
Abstract
Graphene quantum dots (GQDs) are a promising next generation nanomaterial with manifold biomedical applications. For real world applications, comprehensive studies on their influence on the functionality of primary human cells are mandatory. Here, we report the effects of GQDs on the transcriptome of CD34+ hematopoietic stem cells after an incubation time of 36 hours. Of the 20 800 recorded gene expressions, only one, namely the selenoprotein W, 1, is changed by the GQDs in direct comparison to CD34+ hematopoietic stem cells cultivated without GQDs. Only a meta analysis reveals that the expression of 1171 genes is weakly affected, taking into account the more prominent changes just by the cell culture. Eight corresponding, weakly affected signaling pathways are identified, which include, but are not limited to, the triggering of apoptosis. These results suggest that GQDs with sizes in the range of a few nanometers hardly influence the CD34+ cells on the transcriptome level after 36 h of incubation, thereby demonstrating their high usability for in vivo studies, such as fluorescence labeling or delivery protocols, without strong effects on the functional status of the cells.
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Affiliation(s)
- Stefan Fasbender
- Condensed Matter Physics Laboratory, Heinrich-Heine-University, D-40204, Düsseldorf, Germany
| | - Lisa Zimmermann
- Condensed Matter Physics Laboratory, Heinrich-Heine-University, D-40204, Düsseldorf, Germany
| | - Ron-Patrick Cadeddu
- Department of Haematology, Oncology and Clinical Immunology, Heinrich-Heine-University, D-40204, Düsseldorf, Germany
| | - Martina Luysberg
- Ernst Ruska Centre, Jülich Research Centre, D-52425, Jülich, Germany
| | - Bastian Moll
- Institute for Inorganic Chemistry and Structural Chemistry, Heinrich-Heine-University, D-40204, Düsseldorf, Germany
| | - Christoph Janiak
- Institute for Inorganic Chemistry and Structural Chemistry, Heinrich-Heine-University, D-40204, Düsseldorf, Germany
| | - Thomas Heinzel
- Condensed Matter Physics Laboratory, Heinrich-Heine-University, D-40204, Düsseldorf, Germany.
| | - Rainer Haas
- Department of Haematology, Oncology and Clinical Immunology, Heinrich-Heine-University, D-40204, Düsseldorf, Germany.
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77
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El-Seedi HR, El-Shabasy RM, Khalifa SAM, Saeed A, Shah A, Shah R, Iftikhar FJ, Abdel-Daim MM, Omri A, Hajrahand NH, Sabir JSM, Zou X, Halabi MF, Sarhan W, Guo W. Metal nanoparticles fabricated by green chemistry using natural extracts: biosynthesis, mechanisms, and applications. RSC Adv 2019; 9:24539-24559. [PMID: 35527869 PMCID: PMC9069627 DOI: 10.1039/c9ra02225b] [Citation(s) in RCA: 157] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 07/05/2019] [Indexed: 12/19/2022] Open
Abstract
Nanoparticles (NPs) are new inspiring clinical targets that have emerged from persistent efforts with unique properties and diverse applications. However, the main methods currently utilized in their production are not environmentally friendly. With the aim of promoting a green approach for the synthesis of NPs, this review describes eco-friendly methods for the preparation of biogenic NPs and the known mechanisms for their biosynthesis. Natural plant extracts contain many different secondary metabolites and biomolecules, including flavonoids, alkaloids, terpenoids, phenolic compounds and enzymes. Secondary metabolites can enable the reduction of metal ions to NPs in eco-friendly one-step synthetic processes. Moreover, the green synthesis of NPs using plant extracts often obviates the need for stabilizing and capping agents and yields biologically active shape- and size-dependent products. Herein, we review the formation of metallic NPs induced by natural extracts and list the plant extracts used in the synthesis of NPs. In addition, the use of bacterial and fungal extracts in the synthesis of NPs is highlighted, and the parameters that influence the rate of particle production, size, and morphology are discussed. Finally, the importance and uniqueness of NP-based products are illustrated, and their commercial applications in various fields are briefly featured.
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Affiliation(s)
- Hesham R El-Seedi
- Pharmacognosy Group, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre Box 574 SE-751 23 Uppsala Sweden +46 18 4714207
- College of Food and Biological Engineering, Jiangsu University Zhenjiang 212013 China
- Al-Rayan Research and Innovation Center, Al-Rayan Colleges Medina 42541 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Egypt
| | - Rehan M El-Shabasy
- Department of Chemistry, Faculty of Science, Menoufia University Egypt
- Ecological Chemistry Group, Department of Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology Stockholm Sweden
| | - Shaden A M Khalifa
- Clinical Research Centre, Karolinska University Hospital Huddinge Sweden
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University SE 106 91 Stockholm Sweden
| | - Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University 45320 Islamabad Pakistan
| | - Afzal Shah
- Department of Chemistry, College of Science, University of Bahrain Sakhir 32038 Bahrain
| | - Raza Shah
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan
| | - Faiza Jan Iftikhar
- Department of Chemistry, Quaid-i-Azam University 45320 Islamabad Pakistan
| | - Mohamed M Abdel-Daim
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University Ismailia 41522 Egypt
| | - Abdelfatteh Omri
- Center of Excellence in Bionoscience Research, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
- Biotechnology Research Group, Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
| | - Nahid H Hajrahand
- Center of Excellence in Bionoscience Research, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
- Biotechnology Research Group, Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
| | - Jamal S M Sabir
- Center of Excellence in Bionoscience Research, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
- Biotechnology Research Group, Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU) Jeddah 21589 Saudi Arabia
| | - Xiaobo Zou
- College of Food and Biological Engineering, Jiangsu University Zhenjiang 212013 China
| | - Mohammed F Halabi
- Al-Rayan Research and Innovation Center, Al-Rayan Colleges Medina 42541 Saudi Arabia
| | | | - Weisheng Guo
- Translational Medicine Center, The Second Affiliated Hospital, Guangzhou Medical University Guangzhou 510260 China +86-020-34153830
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78
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Injectable Nanocomposite Hydrogels and Electrosprayed Nano(Micro)Particles for Biomedical Applications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019. [PMID: 30357692 DOI: 10.1007/978-981-13-0947-2_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Polymeric scaffolds have played important roles in biomedical applications due to their potentially practical performance such as delivery of bioactive components and/or regenerative cells. These materials were well-designed to encapsulate bioactive molecules or/and nanoparticles for enhancing their performance in tissue regeneration and drug delivery systems. In the study, several multifunctional nanocomposite hydrogel and polymeric nano(micro)particles-electrosprayed platforms were described from their fabrication methods and structural characterizations to potential applications in the mentioned fields. Regarding to their described performance, these multifunctional nanocomposite biomaterials could pay many ways for further studies that enables them apply in clinical applications.
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79
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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. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 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] [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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80
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Huang J, Cao C, Liu J, Yan C, Xiao J. The response of nitrogen removal and related bacteria within constructed wetlands after long-term treating wastewater containing environmental concentrations of silver nanoparticles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 667:522-531. [PMID: 30833250 DOI: 10.1016/j.scitotenv.2019.02.396] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/21/2019] [Accepted: 02/25/2019] [Indexed: 06/09/2023]
Abstract
The wide application of consumer products containing silver nanoparticles (AgNPs) inevitably results in their release into sewer systems and wastewater treatment plants, where they would encounter (and cause potential negative impacts) constructed wetlands (CWs), a complex biological system containing plants, substrate and microorganisms. Herein, the long-term effects of environmental AgNPs concentrations on nitrogen removal, key enzymatic activities and nitrogen-related microbes in constructed wetlands (CWs) were investigated. The short-term exposure (40 d) to AgNPs significantly inhibited TN and NH4+-N removal, and the inhibition degree had a positive relationship with AgNPs levels. After about 450 d exposure, 200 μg/L AgNPs could slightly increase average TN removal efficiency, while presence of 50 μg/L AgNPs showed no difference, compared to control. The NH4+-N removal in all CWs had no difference. The present study indicated that short-term AgNPs loading evidently reduced nitrogen removal, whereas long-term exposure to AgNPs showed no adverse impacts on NH4+-N removal and slightly stimulated TN removal, which was related to the increase of corresponding enzymatic activities. After exposing AgNPs for 450 d, the abundance of relative functional genes and the composition of key community structure were determined by qPCR and high-throughput sequencing, respectively. The results showed that the abundance of amoA and nxrA dramatically higher than control, whereas the abundance of nirK, nirS, nosZ and anammox 16S rRNA was slightly higher than control, but had no statistical difference, which accorded with the TN removal performance. The microbial community analysis showed that different AgNPs concentrations could affect the microbial diversity and structure. The changes of the relative abundance of nitrogen-related genera were associated with the impacts of AgNPs on the nitrogen removal performance. Overall, the AgNPs loading had impacts on the key enzymatic activities, the abundance of nitrogen-related genes and microbial community, thus finally affected the treatment performance of CWs.
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Affiliation(s)
- Juan Huang
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China.
| | - Chong Cao
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Jialiang Liu
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Chunni Yan
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Jun Xiao
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China
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81
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Fernando I, Zhou Y. Concentration dependent effect of humic acid on the transformations of silver nanoparticles. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.04.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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82
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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. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 211:46-56. [PMID: 30946994 DOI: 10.1016/j.aquatox.2019.03.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [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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83
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Lopes IMD, de Oliveira IM, Bargi-Souza P, Cavallin MD, Kolc CSM, Khalil NM, Quináia SP, Romano MA, Romano RM. Effects of Silver Nanoparticle Exposure to the Testicular Antioxidant System during the Prepubertal Rat Stage. Chem Res Toxicol 2019; 32:986-994. [DOI: 10.1021/acs.chemrestox.8b00281] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Paula Bargi-Souza
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo (USP), Av. Prof. Lineu Prestes, 1524, 05508-000 São Paulo, Brazil
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos, 6627, 31270-901 Minas Gerais, Brazil
| | | | - Christiane Schineider Machado Kolc
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos, 6627, 31270-901 Minas Gerais, Brazil
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84
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Vieira Costa JA, Machado Terra AL, Cruz ND, Gonçalves IS, Moreira JB, Kuntzler SG, de Morais MG. Microalgae Cultivation and Industrial Waste: New Biotechnologies for Obtaining Silver Nanoparticles. MINI-REV ORG CHEM 2019. [DOI: 10.2174/1570193x15666180626141922] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Industrial effluents containing heavy metals can have harmful effects on organisms and the
ecosystem. Silver is a waste from textile, galvanic and photographic industries, and when released into
the environment, it can harm human health and cause biological modification. Removal of metals, such
as silver, has been traditionally carried out using physicochemical methods that produce a high concentration
of sludge and expend a significant amount of energy. Researchers are seeking innovative technologies
for more efficient removal of silver or for using this heavy metal to obtain new products. The
use of microalgae is a promising alternative to traditional remediation methods because several species
can absorb and assimilate heavy metals. When exposed to toxic substances, microalgae excrete molecules
in the medium that induce the reduction of silver particles to nanoparticles. Biosynthesized silver
nanoparticles (AgNPs) can be used in medicine, food packaging, the production of cosmetics and pharmaceuticals,
civil engineering, sensors and water purification. Thus, microalgal biosynthesis of metal
nanoparticles has the capacity to bioremediate metals and subsequently convert them into non-toxic
forms in the cell. In this context, this review addresses the use of microalgal biotechnology for industrial
waste remediation of silver, which includes the simultaneous biosynthesis of AgNPs. We also discuss
the potential applications of these nanoparticles.
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Affiliation(s)
- Jorge Alberto Vieira Costa
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande (FURG), P.O. Box 474, 96203-900, Rio Grande, RS, Brazil
| | - Ana Luiza Machado Terra
- Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande (FURG), P.O. Box 474, 96203-900, Rio Grande, RS, Brazil
| | - Nidria Dias Cruz
- Laboratory of Microbiology and Biochemistry, College of Chemistry and Food Engineering, Federal University of Rio Grande (FURG), P.O. Box 474, 96203-900, Rio Grande, RS, Brazil
| | - Igor Severo Gonçalves
- Laboratory of Microbiology and Biochemistry, College of Chemistry and Food Engineering, Federal University of Rio Grande (FURG), P.O. Box 474, 96203-900, Rio Grande, RS, Brazil
| | - Juliana Botelho Moreira
- Laboratory of Microbiology and Biochemistry, College of Chemistry and Food Engineering, Federal University of Rio Grande (FURG), P.O. Box 474, 96203-900, Rio Grande, RS, Brazil
| | - Suelen Goettems Kuntzler
- Laboratory of Microbiology and Biochemistry, College of Chemistry and Food Engineering, Federal University of Rio Grande (FURG), P.O. Box 474, 96203-900, Rio Grande, RS, Brazil
| | - Michele Greque de Morais
- Laboratory of Microbiology and Biochemistry, College of Chemistry and Food Engineering, Federal University of Rio Grande (FURG), P.O. Box 474, 96203-900, Rio Grande, RS, Brazil
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85
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Leynen N, Van Belleghem FG, Wouters A, Bove H, Ploem JP, Thijssen E, Langie SA, Carleer R, Ameloot M, Artois T, Smeets K. In vivo Toxicity Assessment of Silver Nanoparticles in Homeostatic versus Regenerating Planarians. Nanotoxicology 2019; 13:476-491. [DOI: 10.1080/17435390.2018.1553252] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Nathalie Leynen
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Frank G.A.J Van Belleghem
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Annelies Wouters
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Hannelore Bove
- Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Jan-Pieter Ploem
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Elsy Thijssen
- Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Sabine A.S. Langie
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
- VITO NV, Mol, Belgium
| | - Robert Carleer
- Applied and Analytical Chemistry, Hasselt University, Diepenbeek, Belgium
| | - Marcel Ameloot
- Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Tom Artois
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
| | - Karen Smeets
- Centre for Environmental Sciences, Zoology, Biodiversity and Toxicology, Hasselt University, Hasselt, Belgium
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86
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Cattò C, Garuglieri E, Borruso L, Erba D, Casiraghi MC, Cappitelli F, Villa F, Zecchin S, Zanchi R. Impacts of dietary silver nanoparticles and probiotic administration on the microbiota of an in-vitro gut model. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 245:754-763. [PMID: 30500755 DOI: 10.1016/j.envpol.2018.11.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 10/05/2018] [Accepted: 11/05/2018] [Indexed: 06/09/2023]
Abstract
Ingestion of silver nanoparticles (AgNPs) is inevitable linked to their widespread use in food, medicines and other consumer products. However, their effects on human microbiota at non-lethal concentrations remain poorly understood. In this study, the interactions among 1 μg mL-1 AgNPs, the intestinal microbiota, and the probiotic Bacillus subtilis (BS) were tested using in-vitro batch fermentation models inoculated with human fecal matter. Results from metagenomic investigations revealed that the core bacterial community was not affected by the exposure of AgNPs and BS at the later stage of fermentation, while the proportions of rare species changed drastically with the treatments. Furthermore, shifts in the Firmicutes/Bacteriodetes (F/B) ratios were observed after 24 h with an increase in the relative abundance of Firmicutes species and a decrease in Bacteroidetes in all fermentation cultures. The co-exposure to AgNPs and BS led to the lowest F/B ratio. Fluorescent in-situ hybridization analyses indicated that non-lethal concentration of AgNPs negatively affected the relative percentage of Faecalibacterium prausnitzii and Clostridium coccoides/Eubacterium rectales taxa in the fermentation cultures after 24 h. However, exposure to single and combined treatments of AgNPs and BS did not change the overall diversity of the fecal microflora. Functional differences in cell motility, translation, transport, and xenobiotics degradation occurred in AgNPs-treated fermentation cultures but not in AgNPs+BS-treated samples. Compared to the control samples, treated fecal cultures showed no significant statistical differences in terms of short-chain fatty acids profiles, cytotoxic and genotoxic effects on Caco-2 cell monolayers. Overall, AgNPs did not affect the composition and diversity of the core fecal microflora and its metabolic and toxic profiles. This work indicated a chemopreventive role of probiotic on fecal microflora against AgNPs, which were shown by the decrease of F/B ratio and the unaltered state of some key metabolic pathways.
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Affiliation(s)
- Cristina Cattò
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133, Milano, Italy
| | - Elisa Garuglieri
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133, Milano, Italy
| | - Luigimaria Borruso
- Faculty of Science and Technology, Free University of Bozen, piazza Università 5, 39100, Bolzano, Italy
| | - Daniela Erba
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133, Milano, Italy
| | - Maria Cristina Casiraghi
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133, Milano, Italy
| | - Francesca Cappitelli
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133, Milano, Italy
| | - Federica Villa
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133, Milano, Italy.
| | - Sarah Zecchin
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133, Milano, Italy
| | - Raffaella Zanchi
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133, Milano, Italy
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87
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Gorka DE, Lin NJ, Pettibone JM, Gorham JM. Chemical and Physical Transformations of Silver Nanomaterial Containing Textiles After Modeled Human Exposure. NANOIMPACT 2019; 14:10.1016/j.impact.2019.100160. [PMID: 31579298 PMCID: PMC6774363 DOI: 10.1016/j.impact.2019.100160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The antimicrobial properties of silver nanomaterials (AgNM) have been exploited in various consumer applications, including textiles such as wound dressings. Understanding how these materials chemically transform throughout their use is necessary to predict their efficacy during use and their behavior after disposal. The aim of this work was to evaluate chemical and physical transformations to a commercial AgNM-containing wound dressing during modeled human exposure to synthetic sweat (SW) or simulated wound fluid (WF). Scanning electron microscopy with energy dispersive X-ray spectroscopy (EDS) revealed the formation of micrometer-sized structures at the wound dressing surface after SW exposure while WF resulted in a largely featureless surface. Measurements by X-ray photoelectron spectroscopy (XPS) revealed a AgCl surface (consistent with EDS) while X-ray diffraction (XRD) found a mixture of zero valent silver and AgCl suggesting the AgNM wound dressings surface formed a passivating AgCl surface layer after SW and WF exposure. For WF, XPS based findings revealed the addition of an adsorbed protein layer based on the nitrogen marker which adsorbed released silver at prolonged exposures. Silver release was evaluated by inductively coupled plasma mass spectrometry which revealed a significant released silver fraction in WF and minimal released silver in SW. Analysis suggests that the protein in WF sequestered a fraction of the released silver which continued with exposure time, suggesting additional processing at the wound dressing surface even after the initial transformation to AgCl. To evaluate the impact on antimicrobial efficacy, zone of inhibition (ZOI) testing was conducted which found no significant change after modeled human exposure compared to the pristine wound dressing. The results presented here suggest AgNM-containing wound dressings transform chemically in simulated human fluids resulting in a material with comparable antimicrobial properties with pristine wound dressings. Ultimately, knowing the resulting chemical properties of the AgNM wound dressings will allow better predictive models to be developed regarding their fate.
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88
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Sinclair T, Patil A, Raza B, Reurink D, van den Hengel S, Rutjes S, de Roda Husman A, Roesink H, de Vos W. Cationically modified membranes using covalent layer-by-layer assembly for antiviral applications in drinking water. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.10.081] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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89
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He X, Deng H, Hwang HM. The current application of nanotechnology in food and agriculture. J Food Drug Anal 2019; 27:1-21. [PMID: 30648562 PMCID: PMC9298627 DOI: 10.1016/j.jfda.2018.12.002] [Citation(s) in RCA: 278] [Impact Index Per Article: 55.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 12/25/2022] Open
Abstract
The rapid development of nanotechnology has been facilitating the transformations of traditional food and agriculture sectors, particularly the invention of smart and active packaging, nanosensors, nanopesticides and nanofertilizers. Numerous novel nanomaterials have been developed for improving food quality and safety, crop growth, and monitoring environmental conditions. In this review the most recent trends in nanotechnology are discussed and the most challenging tasks and promising opportunities in the food and agriculture sectors from selected recent studies are addressed. The toxicological fundamentals and risk assessment of nanomaterials in these new food and agriculture products are also discussed. We highlighted the potential application of bio-synthesized and bio-inspired nanomaterial for sustainable development. However, fundamental questions with regard to high performance, low toxic nanomaterials need to be addressed to fuel active development and application of nanotechnology. Regulation and legislation are also paramount to regulating the manufacturing, processing, application, as well as disposal of nanomaterials. Efforts are still needed to strengthen public awareness and acceptance of the novel nano-enabled food and agriculture products. We conclude that nanotechnology offers a plethora of opportunities, by providing a novel and sustainable alternative in the food and agriculture sectors.
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Affiliation(s)
- Xiaojia He
- The University of Georgia, Athens, GA, 30602,
USA
| | - Hua Deng
- Morgan State University, Baltimore, MD, 21251,
USA
| | - Huey-min Hwang
- Jackson State University, Jackson, MS, 39217,
USA
- Dalian Marinetime University, Dalian, Liaoning,
China
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90
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Israa M, Mokhtar Y, Thanaa S, Osama M. The protective role of tannic acid against possible hepato-nephrotoxicity induced by silver nanoparticles on male rats. SANAMED 2019. [DOI: 10.24125/sanamed.v14i2.336] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Silver nanoparticles (AgNPs) are being used extensively for biomedical purposes regarding to their broad antimicrobial activity, however their toxicity has been addressed in only few studies. In the present study, we aimed to prepare and characterize AgNPs, investigate their adverse effect on liver and kidney functions, and also elucidate the hepato-nephro protective ability of tannic acid in male rats. The obtained results showed that AgNPs caused oxidative stress throughout the induction of thiobarbituric acid-reactive substances (TBARS) and the reduction of the activities of antioxidant enzymes (GST, SOD, CAT, GPx) and the levels of glutathione. Hepatic markers enzymes (AST, ALT, ALP, ACP, LDH and GGT), total bilirubin, urea, creatinine and lipid profile were increased, while hematological parameters were decreased. Histopathological investigations indicated marked degeneration of hepatocytes, endothelial cells of renal which with its role has confirmed the hepatotoxicity and nephrotoxicity induced by AgNPs. The presence of tannic acid along with AgNPs showed obvious improvements in the injured liver and kidney tissues. The protective effect of tannic acid against the toxicity of AgNPs might be due to its antioxidant properties and scavenging abilities against active free radicals.
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91
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Chen C, Huang Y. Carbonaceous nanomaterial-initiated reductive transformation of silver ions in the aqueous environment under sunlight. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 644:315-323. [PMID: 29981979 DOI: 10.1016/j.scitotenv.2018.06.246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 05/22/2018] [Accepted: 06/20/2018] [Indexed: 06/08/2023]
Abstract
The aquatic systems are among the major sinks for discharged substances, and these substances will likely associate with each other. The present work, therefore, aims to study the transformation of metal ions to nanoparticles by discharged carbonaceous materials of emerging concern (e.g., carbon nanotubes (CNTs)) coexisting in the aqueous environment. Here we undertook a systematic study of the reduction of silver ions by CNT suspensions under sunlight irradiation. The formation rate of silver nanoparticles (AgNPs) is suppressed by an increasing amount of dissolved oxygen or strong solution acidity, as well as the presence of other cations. The photoreduction of Ag+ by CNTs involves a charge transfer process between Ag+ and the CNTs. The way in which carbonaceous nanomaterial properties influence the formation kinetics, size, and morphology of the AgNPs was examined. An enhanced sunlight-driven formation of AgNPs with highly monodispersity was observed in CNTs with nitrogen-containing functional groups due to their active electrochemical and stabilizing nature. The compiled results reveal the importance of an understanding of not only the inherent environmental behaviors of individual substances but also their interactions with concurrent substances in the environment. We demonstrated that the transformation of silver under sunlight by carbonaceous materials with different characteristics could alter the properties and potential risks of metallic species in aquatic environments.
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Affiliation(s)
- Chiaying Chen
- Department of Environmental Engineering, National Chung Hsing University, Taichung City 402, Taiwan.
| | - Yu Huang
- Department of Environmental Engineering, National Chung Hsing University, Taichung City 402, Taiwan
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92
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Cao G, Lin H, Kannan P, Wang C, Zhong Y, Huang Y, Guo Z. Enhanced Antibacterial and Food Simulant Activities of Silver Nanoparticles/Polypropylene Nanocomposite Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14537-14545. [PMID: 30398355 DOI: 10.1021/acs.langmuir.8b03061] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In this work, we synthesize dodecyl mercaptan-functionalized silver nanoparticles integrated with polypropylene nanocomposite (DM-AgNPs/PP) substrates by a simple in situ melt blending method. The formation and distribution of AgNPs are confirmed by UV-visible spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, and thermogravimetric analysis. The existence of DM-AgNPs in PP film substrate enhances the thermal degradation and crystallization properties. Further, the antimicrobial activity of as-synthesized DM-AgNPs/PP film substrate is studied using Gram-negative ( Escherichia coli) and Gram-positive ( Staphylococcus aureus) bacteria as model microbes, which displayed significantly enhanced bacteriostatic activities under optimized composition and experimental conditions. Interestingly, PP substrate with 0.4% DM-AgNPs exhibits drastically improved antibacterial property via the release of oxygen reactive species and Ag ion diffusion processes; thus, the inhibition rates of E. coli and S. aureus are obtained as 100 and 84.6%, respectively, which is higher than the conventional AgNPs. Finally, we demonstrate the migration study of Ag ions from the DM-AgNPs/PP film using different food simulant solutions by inductively coupled plasma-mass spectrometry analysis and the dissolved Ag ion content is estimated, which is a key prospect for the toxicity analysis. The overall Ag ion migration value is estimated between 1.8 and 24.5 μg/cm2 and displayed a lowest limit of Ag ion migration as 0.36 μg/cm2. Our work highlights the development of high performance nanocomposites as promising antibacterial and food simulant materials for biomedical and industrial applications.
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Affiliation(s)
- Guozhou Cao
- School of Materials Science and Chemical Engineering , Ningbo University , Ningbo 315211 , Zhejiang Province , P. R. China
- Ningbo Academy of Inspection and Quarantine , Ningbo 315012 , Zhejiang Province , P. R. China
| | - Han Lin
- School of Materials Science and Chemical Engineering , Ningbo University , Ningbo 315211 , Zhejiang Province , P. R. China
| | - Palanisamy Kannan
- College of Biological, Chemical Sciences and Engineering , Jiaxing University , Jiaxing 314001 , PR China
| | - Chun Wang
- Ningbo Academy of Inspection and Quarantine , Ningbo 315012 , Zhejiang Province , P. R. China
| | - Yingying Zhong
- Ningbo Academy of Inspection and Quarantine , Ningbo 315012 , Zhejiang Province , P. R. China
| | - Youju Huang
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Material Technology and Engineering , Chinese Academy of Sciences , Ningbo 315201 , China
| | - Zhiyong Guo
- School of Materials Science and Chemical Engineering , Ningbo University , Ningbo 315211 , Zhejiang Province , P. R. China
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93
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Calderón L, Yang L, Lee K, Mainelis G. Characterization of Airborne Particle Release from Nanotechnology-enabled Clothing Products. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 2018; 20:330. [PMID: 32792850 PMCID: PMC7423247 DOI: 10.1007/s11051-018-4435-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 11/29/2018] [Indexed: 06/11/2023]
Abstract
This study investigated airborne particle release from seventeen nanotechnology-enabled clothing items, including eleven items that were advertised as containing silver nanoparticles. Clothing wear was simulated using an abrader, where the rotating clothing samples came in contact with felt abrader wheels, and size distribution and concentration of the released particles were measured using a Scanning Mobility Particle Sizer and Aerodynamic Particle Sizer. Through the use of inductively coupled plasma mass spectrometry, silver was detected in all eleven products advertised as containing silver, and its concentration varied from approximately 1 ppm to ~1.5×105 ppm depending on the product. Nano-sized particles, as well as larger agglomerates, were released from all investigated products with concentrations as high as ~2×104 particles/cm3; the concentration and size distribution varied substantially from product to product, and silver-based clothing tended to release smaller and higher number concentrations of particles than products where fibers were formulated using nanotechnology. Examination of the released particles using TEM confirmed the presence of manufactured nanoparticles; airborne sample analysis using SEM/EDS showed that the released particles contained Ag as well as other metals. This study can be valuable for the risk assessment of nanotechnology-based consumer goods, especially clothing containing silver.
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Affiliation(s)
- Leonardo Calderón
- Rutgers University, Department of Environmental Sciences, New Brunswick, NJ 08901, USA
| | - Letao Yang
- Rutgers University, Department of Chemistry and Chemical Biology, Piscataway, NJ 08854, USA
| | - Kibum Lee
- Rutgers University, Department of Chemistry and Chemical Biology, Piscataway, NJ 08854, USA
| | - Gediminas Mainelis
- Rutgers University, Department of Environmental Sciences, New Brunswick, NJ 08901, USA
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94
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Dąbrowska-Bouta B, Sulkowski G, Strużyński W, Strużyńska L. Prolonged Exposure to Silver Nanoparticles Results in Oxidative Stress in Cerebral Myelin. Neurotox Res 2018; 35:495-504. [PMID: 30406926 PMCID: PMC6420427 DOI: 10.1007/s12640-018-9977-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/16/2018] [Accepted: 10/30/2018] [Indexed: 02/07/2023]
Abstract
Currently, silver nanoparticles (AgNPs) are frequently used in a wide range of medical and consumer products. Substantial usage of AgNPs is considered to create substantive risks to both the environment and the human health. Since there is increasing evidence that the main mechanism of toxicity of AgNPs relates to oxidative stress, in the current study we investigate oxidative stress-related biochemical parameters in myelin isolated from adult rat brain subjected to a low dose of AgNPs. Animals were exposed for 2 weeks to 0.2 mg/kg b.w. of small (10 nm) AgNPs stabilized in citrate buffer or silver citrate established as a control to compare the effects of particulate and ionic forms of silver. We observe enhanced peroxidation of lipids and decreased concentrations of protein and non-protein –SH groups in myelin membranes. Simultaneously, expression of superoxide dismutase, a free radical scavenger, is increased whereas the process of protein glutathionylation, being a cellular protective mechanism against irreversible oxidation, is found to be inefficient. Results indicate that oxidative stress-induced alterations in myelin membranes may be the cause of ultrastructural disturbances in myelin sheaths.
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Affiliation(s)
- Beata Dąbrowska-Bouta
- Laboratory of Pathoneurochemistry, Department of Neurochemistry, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego str, 02-106, Warsaw, Poland
| | - Grzegorz Sulkowski
- Laboratory of Pathoneurochemistry, Department of Neurochemistry, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego str, 02-106, Warsaw, Poland
| | - Witold Strużyński
- Department of Animal Environment Biology, Unit of Zoology, Faculty of Animal Sciences, Warsaw University of Life Sciences, 8 Ciszewskiego str, 02-787, Warsaw, Poland
| | - Lidia Strużyńska
- Laboratory of Pathoneurochemistry, Department of Neurochemistry, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego str, 02-106, Warsaw, Poland.
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95
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Rong H, Garg S, Waite TD. Transformation of AgCl Particles under Conditions Typical of Natural Waters: Implications for Oxidant Generation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:11621-11631. [PMID: 30227709 DOI: 10.1021/acs.est.8b02902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The engineered silver nanoparticles (AgNPs) used in consumer products are ultimately released to the environment either as Ag(0), silver sulfide (Ag2S(s)), silver chloride (AgCl(s)), and/or dissolved Ag(I) complexes. Of these, AgCl(s) and Ag2S(s) exhibit semiconducting properties and hence may have significant implications to oxidant generation and subsequent redox transformations in natural waters. In this work, we investigate the transformation and photoreactivity of AgCl(s) under simulated natural water conditions with the photoreactivity probed by measuring the oxidation of formate (HCOO-), a simple compound with a well-defined oxidation pathway. Our results show that AgCl(s) undergoes rapid dissolution in the presence of chloride concentrations representative of seawater (ca. 0.5 M NaCl) forming dissolved Ag(I) complexes but is stable in fresh waters and slightly brackish waters (≤200 mM NaCl). We further show that under these lower salinity conditions in which AgCl(s) is stable, pH has a significant impact on the reactivity of semiconducting AgCl(s). The photoreactivity (measured as initial HCOO- oxidation rate) of AgCl(s) is relatively constant at pH 4.0 for periods of 24 h or more; however, it decreases rapidly under alkaline conditions. The rapid transformation (or "aging") of AgCl(s) under alkaline conditions suggests that AgCl(s), potentially transported through wastewater effluent to fresh or brackish water environments, may not have a significant impact in such environments. In comparison, in situ formed AgCl(s), potentially formed as a result of the oxidation of high concentrations (≥60 μg Ag·L-1) of Ag(0) and/or Ag2S(s), may have significant implications to oxidant generation in natural waters. Our results further show that rapid cycling of Ag between the 0 and +I redox states in sunlit surface waters as a result of the presence of AgNP oxidants (such as H2O2 and organic radicals) will further enhance the rate and extent of oxidant generation by AgCl(s).
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Affiliation(s)
- Hongyan Rong
- UNSW Water Research Center, School of Civil and Environmental Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - Shikha Garg
- UNSW Water Research Center, School of Civil and Environmental Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - T David Waite
- UNSW Water Research Center, School of Civil and Environmental Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
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96
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Wimmer A, Kalinnik A, Schuster M. New insights into the formation of silver-based nanoparticles under natural and semi-natural conditions. WATER RESEARCH 2018; 141:227-234. [PMID: 29793162 DOI: 10.1016/j.watres.2018.05.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 05/09/2018] [Accepted: 05/10/2018] [Indexed: 06/08/2023]
Abstract
For the first time, the natural formation of silver-based nanoparticles (Ag-b-NPs) was studied in field investigations of two pre-alpine lakes in Germany that contain geogenic silver traces in the sub-ng L-1 range. Light-sensitive microorganisms most likely accumulate and transport these silver traces from deeper water layers to the surface. At the surface of the eutrophic lake, approximately 40% of total silver (5.7 ng L-1) consisted of Ag-b-NPs, whereas in the oligotrophic lake with similar enrichment of silver species, no Ag-b-NPs were detected. Additional lab experiments with nature-related Ag(I) concentrations in the lower-ng L-1 range and natural organic matter with total organic carbon values of ≤5 mg L-1 revealed that, contrary to common interpretation in the literature, Ag-b-NPs are also or even preferably formed in the dark. Particle size increases gradually with increasing reaction time, showing that Ostwald ripening occurs even at such low particle concentrations. When sulfide ions are present, smaller Ag-b-NPs with a narrower size distribution are formed.
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Affiliation(s)
- Andreas Wimmer
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Garching, 85748, Germany
| | - Anna Kalinnik
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Garching, 85748, Germany
| | - Michael Schuster
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Garching, 85748, Germany.
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97
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Polesel F, Farkas J, Kjos M, Almeida Carvalho P, Flores-Alsina X, Gernaey KV, Hansen SF, Plósz BG, Booth AM. Occurrence, characterisation and fate of (nano)particulate Ti and Ag in two Norwegian wastewater treatment plants. WATER RESEARCH 2018; 141:19-31. [PMID: 29753974 DOI: 10.1016/j.watres.2018.04.065] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 03/21/2018] [Accepted: 04/28/2018] [Indexed: 06/08/2023]
Abstract
Due to their widespread application in consumer products, elemental titanium (e.g., titanium dioxide, TiO2) and silver (Ag), also in nanoparticulate form, are increasingly released from households and industrial facilities to urban wastewater treatment plants (WWTPs). A seven-day sampling campaign was conducted in two full-scale WWTPs in Trondheim (Norway) employing only primary treatment. We assessed the occurrence and elimination of Ti and Ag, and conducted size-based fractionation using sequential filtration of influent samples to separate particulate, colloidal and dissolved fractions. Eight-hour composite influent samples were collected to assess diurnal variations in total Ti and Ag influx. Measured influent Ti concentrations (up to 290 μg L-1) were significantly higher than Ag (<0.15-2.1 μg L-1), being mostly associated with suspended solids (>0.7 μm). Removal efficiencies ≥70% were observed for both elements, requiring for one WWTP to account for the high Ti content (∼2 g L-1) in the flocculant. Nano- and micron-sized Ti particles were observed with scanning transmission electron microscopy (STEM) in influent, effluent and biosolids, while Ag nanoparticles were detected in biosolids only. Diurnal profiles of influent Ti were correlated to flow and pollutant concentration patterns (especially total suspended solids), with peaks during the morning and/or evening and minima at night, indicating household discharges as predominant source. Irregular profiles were exhibited by influent Ag, with periodic concentration spikes suggesting short-term discharges from one or few point sources (e.g., industry). Influent Ti and Ag dynamics were reproduced using a disturbance scenario generator model, and we estimated per capita loads of Ti (42-45 mg cap-1 d-1) and Ag (0.11 mg cap-1 d-1) from households as well as additional Ag load (14-22 g d-1) from point discharge. This is the first study to experimentally and mathematically describe short-term release dynamics and dry-weather sources of emissions of Ti and Ag in municipal WWTPs and receiving environments.
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Affiliation(s)
- Fabio Polesel
- DTU Environment, Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kongens Lyngby, Denmark.
| | - Julia Farkas
- SINTEF Ocean, Brattørkaia 17C, 7010 Trondheim, Norway
| | - Marianne Kjos
- SINTEF Materials and Chemistry, Postboks 4760 Torgarden, 7465 Trondheim, Norway
| | | | - Xavier Flores-Alsina
- Process and Systems Engineering Center (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads, Building 229, 2800 Kongens Lyngby, Denmark
| | - Krist V Gernaey
- Process and Systems Engineering Center (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads, Building 229, 2800 Kongens Lyngby, Denmark
| | - Steffen Foss Hansen
- DTU Environment, Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kongens Lyngby, Denmark
| | - Benedek Gy Plósz
- DTU Environment, Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kongens Lyngby, Denmark; Department of Chemical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, UK
| | - Andy M Booth
- SINTEF Ocean, Brattørkaia 17C, 7010 Trondheim, Norway.
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98
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Chen H. Metal based nanoparticles in agricultural system: behavior, transport, and interaction with plants. CHEMICAL SPECIATION & BIOAVAILABILITY 2018. [DOI: 10.1080/09542299.2018.1520050] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Hao Chen
- Department of Agriculture, University of Arkansas at Pine Bluff, Pine Bluff, AR, USA
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99
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Rageh MM, El-Gebaly RH, Afifi MM. Antitumor activity of silver nanoparticles in Ehrlich carcinoma-bearing mice. Naunyn Schmiedebergs Arch Pharmacol 2018; 391:1421-1430. [DOI: 10.1007/s00210-018-1558-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 08/15/2018] [Indexed: 10/28/2022]
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100
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Ma YB, Lu CJ, Junaid M, Jia PP, Yang L, Zhang JH, Pei DS. Potential adverse outcome pathway (AOP) of silver nanoparticles mediated reproductive toxicity in zebrafish. CHEMOSPHERE 2018; 207:320-328. [PMID: 29803881 DOI: 10.1016/j.chemosphere.2018.05.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/25/2018] [Accepted: 05/03/2018] [Indexed: 05/11/2023]
Abstract
Recently, the augmented utilization of silver nanoparticles (AgNPs) resulted in increasingrates of its release to aquatic environment, which potentially caused adverse effects to aquatic organisms. Therefore, this study investigated - reproductive toxicity and associated potential adverse outcome pathway (AOP) in zebrafish after chronic exposure to AgNPs. To serve the purpose, three-month-old adult zebrafish were exposed to different concentrations (0, 10, 33 and 100 μg/L) of AgNPs for five weeks. Exposure to 33 and 100 μg/L of AgNPs significantly decreased the fecundity in female zebrafish, accompanied by increasing apoptotic cells in the ovarian and testicular tissue using TUNEL assay. Increasing tissue burdens of AgNPs and reactive oxygen species (ROS) production were also found in both ovary and testis after five-week exposure to AgNPs. To explore the mechanism of the apoptotic pathway, the transcription levels of various genes (bax, bcl-2, caspase-3, and caspase-9) associated with the mitochondrion-mediated apoptosis pathway were examined in zebrafish after exposure to AgNPs. The results showed that the expression patterns of all the investigated genes were altered to some extent. These findings demonstrated that AgNPs exposure caused oxidative stress, induced germ cells apoptosis via mitochondrial-dependent pathway, and ultimately impaired the reproduction in zebrafish.
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Affiliation(s)
- Yan-Bo Ma
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Chun-Jiao Lu
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Muhammad Junaid
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pan-Pan Jia
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Yang
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Jing-Hui Zhang
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - De-Sheng Pei
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.
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