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Zeidler-Erdely PC, Kodali V, Falcone LM, Mercer R, Leonard SS, Stefaniak AB, Grose L, Salmen R, Trainor-DeArmitt T, Battelli LA, McKinney W, Stone S, Meighan TG, Betler E, Friend S, Hobbie KR, Service S, Kashon M, Antonini JM, Erdely A. Absence of lung tumor promotion with reduced tumor size in mice after inhalation of copper welding fumes. Carcinogenesis 2024; 45:630-641. [PMID: 39046922 DOI: 10.1093/carcin/bgae048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 07/09/2024] [Accepted: 07/19/2024] [Indexed: 07/27/2024] Open
Abstract
Welding fumes are a Group 1 (carcinogenic to humans) carcinogen as classified by the International Agency for Research on Cancer. The process of welding creates inhalable fumes rich in iron (Fe) that may also contain known carcinogenic metals such as chromium (Cr) and nickel (Ni). Epidemiological evidence has shown that both mild steel (Fe-rich) and stainless steel (Fe-rich + Cr + Ni) welding fume exposure increases lung cancer risk, and experimental animal data support these findings. Copper-nickel (CuNi) welding processes have not been investigated in the context of lung cancer. Cu is intriguing, however, given the role of Cu in carcinogenesis and cancer therapeutics. This study examines the potential for a CuNi fume to induce mechanistic key characteristics of carcinogenesis in vitro and to promote lung tumorigenesis, using a two-stage mouse bioassay, in vivo. Male A/J mice, initiated with 3-methylcholanthrene (MCA; 10 µg/g), were exposed to CuNi fumes or air by whole-body inhalation for 9 weeks (low deposition-LD and high deposition-HD) and then sacrificed at 30 weeks. In BEAS-2B cells, the CuNi fume-induced micronuclei and caused DNA damage as measured by γ-H2AX. The fume exhibited high reactivity and a dose-response in cytotoxicity and oxidative stress. In vivo, MCA/CuNi HD and LD significantly decreased lung tumor size and adenomas. MCA/CuNi HD exposure significantly decreased gross-evaluated tumor number. In summary, the CuNi fume in vitro exhibited characteristics of a carcinogen, but in vivo, the exposure resulted in smaller tumors, fewer adenomas, less hyperplasia severity, and with HD exposure, less overall lung lesions/tumors.
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Affiliation(s)
- Patti C Zeidler-Erdely
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Vamsi Kodali
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Lauryn M Falcone
- Department of Dermatology, University of Pittsburgh Medical Center, 3708 Fifth Avenue Suite 500.68, Pittsburgh, PA 15213, United States
| | - Robert Mercer
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Stephen S Leonard
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Aleksandr B Stefaniak
- Respiratory Health Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Lindsay Grose
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Rebecca Salmen
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Taylor Trainor-DeArmitt
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Lori A Battelli
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Walter McKinney
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Samuel Stone
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Terence G Meighan
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Ella Betler
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Sherri Friend
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Kristen R Hobbie
- Pathology Department, Inotiv, P.O. Box 13501, Research Triangle Park, NC 27709, United States
| | - Samantha Service
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Michael Kashon
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - James M Antonini
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
| | - Aaron Erdely
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1000 Frederick Lane, Morgantown, WV 26508, United States
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2
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Zhou S, Tsutsumiuchi K, Imai R, Miki Y, Kondo A, Nakagawa H, Watanabe K, Ohtsuki T. In Vitro Study of Tumor-Homing Peptide-Modified Magnetic Nanoparticles for Magnetic Hyperthermia. Molecules 2024; 29:2632. [PMID: 38893510 PMCID: PMC11174109 DOI: 10.3390/molecules29112632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/22/2024] [Accepted: 05/31/2024] [Indexed: 06/21/2024] Open
Abstract
Cancer cells have higher heat sensitivity compared to normal cells; therefore, hyperthermia is a promising approach for cancer therapy because of its ability to selectively kill cancer cells by heating them. However, the specific and rapid heating of tumor tissues remains challenging. This study investigated the potential of magnetic nanoparticles (MNPs) modified with tumor-homing peptides (THPs), specifically PL1 and PL3, for tumor-specific magnetic hyperthermia therapy. The synthesis of THP-modified MNPs involved the attachment of PL1 and PL3 peptides to the surface of the MNPs, which facilitated enhanced tumor cell binding and internalization. Cell specificity studies revealed an increased uptake of PL1- and PL3-MNPs by tumor cells compared to unmodified MNPs, indicating their potential for targeted delivery. In vitro hyperthermia experiments demonstrated the efficacy of PL3-MNPs in inducing tumor cell death when exposed to an alternating magnetic field (AMF). Even without exposure to an AMF, an additional ferroptotic pathway was suggested to be mediated by the nanoparticles. Thus, this study suggests that THP-modified MNPs, particularly PL3-MNPs, hold promise as a targeted approach for tumor-specific magnetic hyperthermia therapy.
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Affiliation(s)
- Shengli Zhou
- Department of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama 700-8530, Japan; (S.Z.); (K.W.)
| | - Kaname Tsutsumiuchi
- College of Bioscience and Biotechnology, Chubu University, Aichi 487-8501, Japan; (K.T.); (R.I.); (Y.M.); (A.K.); (H.N.)
| | - Ritsuko Imai
- College of Bioscience and Biotechnology, Chubu University, Aichi 487-8501, Japan; (K.T.); (R.I.); (Y.M.); (A.K.); (H.N.)
| | - Yukiko Miki
- College of Bioscience and Biotechnology, Chubu University, Aichi 487-8501, Japan; (K.T.); (R.I.); (Y.M.); (A.K.); (H.N.)
| | - Anna Kondo
- College of Bioscience and Biotechnology, Chubu University, Aichi 487-8501, Japan; (K.T.); (R.I.); (Y.M.); (A.K.); (H.N.)
| | - Hiroshi Nakagawa
- College of Bioscience and Biotechnology, Chubu University, Aichi 487-8501, Japan; (K.T.); (R.I.); (Y.M.); (A.K.); (H.N.)
| | - Kazunori Watanabe
- Department of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama 700-8530, Japan; (S.Z.); (K.W.)
| | - Takashi Ohtsuki
- Department of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama 700-8530, Japan; (S.Z.); (K.W.)
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3
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Hettiarachchi E, Das M, Cadol D, Frey BA, Rubasinghege G. The fate of inhaled uranium-containing particles upon clearance to gastrointestinal tract. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2022; 24:1257-1266. [PMID: 35916312 PMCID: PMC11360387 DOI: 10.1039/d2em00209d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Uranium-bearing respirable dust can cause various health problems, such as cardiovascular and neurological disorders, cancers, immunosuppression, and autoimmunity. Exposure to elevated levels of uranium is linked to many such health conditions in Navajo Nation residents in northwestern New Mexico. Most studies have focused on the fate of inhaled dust particles (<4 μm) in the lungs. However, larger-sized inhaled particles (10-20 μm) can be cleared to the human gastrointestinal tract (GIT), thereby enabling them to interact with stomach and intestinal fluids. Despite the vital importance of understanding the fate of uranium-bearing solids entering the human GIT and their impact on body tissues, cells, and gut microbiota, our understanding remains limited. This study investigated uranium solubility from dust and sediment samples collected near two uranium mines in the Grants Mining District in New Mexico in two simulated gastrointestinal fluids representing fasting conditions in the GIT: Simulated Gastric Fluid (SGF) and Simulated Intestinal Fluid (SIF). The dissolution of uranium from dust depends on its mineralogy, fluid pH, and composition. The dust samples from the Jackpile mine favored higher solubility in the SIF solution, whereas the sediment samples from the St. Anthony Mine favored higher solubility in the SGF solution. Further, geochemical calculations performed with the PHREEQC modeling program suggested that samples rich in the minerals andersonite, tyuyamunite, and/or autunite have higher uranium dissolution in the SIF solution than in the SGF solution. We also tested the effect of added kaolinite and microcline, which are both present in some samples. The ratio of dissolved uranium in SGF relative to SIF decreases with the addition of kaolinite for all mineral phases but andersonite. With the addition of microcline, the ratio of dissolved uranium in SGF relative to SIF decreases for all the tested uranium minerals. The most prevalent oxidation state of dissolved uranium was computationally determined as +6, U(VI). The geochemical calculations made with PHREEQC agree with the experimentally observed results. Therefore, this study gives insight into the mineralogy-controlled toxicological assessment of uranium-containing inhaled dust cleared to the gastrointestinal tract.
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Affiliation(s)
- Eshani Hettiarachchi
- Department of Chemistry, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, USA.
| | - Milton Das
- Department of Chemistry, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, USA.
| | - Daniel Cadol
- Department of Earth & Environmental Sciences, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, USA
| | - Bonnie A Frey
- New Mexico Bureau of Geology and Mineral Resources, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, USA
| | - Gayan Rubasinghege
- Department of Chemistry, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, USA.
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4
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Vennemann A, Breitenstein D, Tallarek E, Mørch Ý, Schmid R, Wiemann M. Subcellular detection of PEBCA particles in macrophages: combining darkfield microscopy, confocal Raman microscopy, and ToF-SIMS analysis. Drug Deliv Transl Res 2022; 12:2075-2088. [PMID: 35182369 PMCID: PMC9360116 DOI: 10.1007/s13346-022-01128-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2022] [Indexed: 01/07/2023]
Abstract
The detection of biomedical organic nanocarriers in cells and tissues is still an experimental challenge. Here we developed an imaging strategy for the label-free detection of poly (ethylbutyl cyanoacrylate) (PEBCA) particles. Experiments were carried out with phagocytic NR8383 macrophages exposed to non-toxic and non-activating concentrations of fluorescent (PEBCA NR668 and PEBCA NR668/IR), non-fluorescent (PEBCA), and cabazitaxel-loaded PEBCA particles (PEBCA CBZ). Exposure to PEBCA NR668 revealed an inhomogeneous particle uptake similar to what was obtained with the free modified Nile Red dye (NR668). In order to successfully identify the PEBCA-loaded cells under label-free conditions, we developed an imaging strategy based on enhanced darkfield microscopy (DFM), followed by confocal Raman microscopy (CRM) and time-of-flight secondary ion mass spectrometry (ToF–SIMS). Nitrile groups of the PEBCA matrix and PEBCA ions were used as suitable analytes for CRM and ToF–SIMS, respectively. Masses found with ToF–SIMS were further confirmed by Orbitrap-SIMS. The combined approach allowed to image small (< 1 µm) PEBCA-containing phagolysosomes, which were identified as PEBCA-containing compartments in NR8383 cells by electron microscopy. The combination of DFM, CRM, and ToF–SIMS is a promising strategy for the label-free detection of PEBCA particles.
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Affiliation(s)
- Antje Vennemann
- IBE R&D Institute for Lung Health gGmbH, Mendelstr. 11, 48149, Münster, Germany
| | | | | | - Ýrr Mørch
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| | - Ruth Schmid
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| | - Martin Wiemann
- IBE R&D Institute for Lung Health gGmbH, Mendelstr. 11, 48149, Münster, Germany.
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5
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Laycock A, Clark NJ, Clough R, Smith R, Handy RD. Determination of metallic nanoparticles in biological samples by single particle ICP-MS: a systematic review from sample collection to analysis. ENVIRONMENTAL SCIENCE. NANO 2022; 9:420-453. [PMID: 35309016 PMCID: PMC8852815 DOI: 10.1039/d1en00680k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 11/26/2021] [Indexed: 05/04/2023]
Abstract
A systematic review of the use of single particle ICP-MS to analyse engineered nanomaterials (ENMs) in biological samples (plants, animals, body fluids) has highlighted that efforts have focused on a select few types of ENMs (e.g., Ag and TiO2) and there is a lack of information for some important tissues (e.g., reproductive organs, skin and fatty endocrine organs). The importance of sample storage is often overlooked but plays a critical role. Careful consideration of the ENM and matrix composition is required to select an appropriate protocol to liberate ENMs from a tissue whilst not promoting the transformation of them, or genesis of new particulates. A 'one size fits all' protocol, applicable to all possible types of ENM and biological matrices, does not seem practical. However, alkaline-based extractions would appear to show greater promise for wide applicability to animal tissues, although enzymatic approaches have a role, especially for plant tissues. There is a lack of consistency in metrics reported and how they are determined (e.g. size limit of detection, and proportions of recovery), making comparison between some studies more difficult. In order to establish standardised protocols for regulatory use, effort is needed to: develop certified reference materials, achieve international agree on nomenclature and the use of control samples, and to create a decision tree to help select the best sample preparation for the type of tissue matrix.
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Affiliation(s)
- Adam Laycock
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Harwell Campus Didcot OX11 0RQ UK
| | - Nathaniel J Clark
- School of Biological and Marine Sciences, University of Plymouth Drake Circus Plymouth PL4 8AA UK
| | - Robert Clough
- Analytical Research Facility, School of Geography, Earth and Environmental Sciences, University of Plymouth Plymouth PL4 8AA UK
| | - Rachel Smith
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Harwell Campus Didcot OX11 0RQ UK
| | - Richard D Handy
- School of Biological and Marine Sciences, University of Plymouth Drake Circus Plymouth PL4 8AA UK
- Visiting Professor, Department of Nutrition, Cihan University-Erbil Kurdistan Region Iraq
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6
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Park EJ, Kang MS, Jin SW, Lee TG, Lee GH, Kim DW, Lee EW, Park J, Choi I, Pak YK. Multiple pathways of alveolar macrophage death contribute to pulmonary inflammation induced by silica nanoparticles. Nanotoxicology 2021; 15:1087-1101. [PMID: 34469701 DOI: 10.1080/17435390.2021.1969461] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
In our previous study, 20 nm-sized amorphous silica nanoparticles (20-SiNPs), but not 50 nm-sized amorphous silica nanoparticles (50-SiNPs), induced pulmonary inflammatory response in rats exposed repeatedly for 14 days (12.5, 25, and 50 μg/time, total six times). In this study, we tried to clarify the causes of different responses induced by both SiNPs using mice (12.5, 25, and 50 μg/lung) and mouse alveolar macrophage cells. When exposed to alveolar macrophage cells for 24 h, both SiNPs decreased cell viability and enhanced ROS generation compared to controls. The 20- and 50-SiNPs also formed giant and autophagosome-like vacuoles in the cytoplasm, respectively. Structural damage of organelles was more pronounced in 20-SiNPs-treated cells than in 50-SiNPs-treated cells, and an increased mitochondrial membrane potential and mitochondrial calcium accumulation were observed only in the 20-SiNPs-treated cells. Additionally, a single intratracheal instillation of both sizes of SiNPs to mice clearly elevated the relative proportion of neutrophils and inhibited differentiation of macrophages and expression of an adhesion molecule. Meanwhile, interestingly, the total number of pulmonary cells and the levels of pro-inflammatory mediators more notably increased in the lungs of mice exposed to 20-SiNPs compared to 50-SiNPs. Given that accumulation of giant vacuoles and dilation of the ER and mitochondria are key indicators of paraptosis, we suggest that 20-SiNPs-induced pulmonary inflammation may be associated with paraptosis of alveolar macrophages.
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Affiliation(s)
- Eun-Jung Park
- East-West Medical Science Research Institute, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, Republic of Korea.,Human Health and Environmental Toxins Research Center, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, Republic of Korea.,Department of Biomedical Science and Technology, Graduate school, Kyung Hee University, Republic of Korea
| | - Min-Sung Kang
- Department of Biomedical Science and Technology, Graduate school, Kyung Hee University, Republic of Korea.,General Toxicology & Research Group, Jeonbuk Branch Institute, Korea Institute of Toxicology, Republic of Korea
| | - Seung-Woo Jin
- Department of Biomedical Science and Technology, Graduate school, Kyung Hee University, Republic of Korea
| | - Tae Geol Lee
- Korea Research Institute of Standards and Science, Republic of Korea
| | - Gwang-Hee Lee
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, Republic of Korea
| | - Dong-Wan Kim
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, Republic of Korea
| | - Eun-Woo Lee
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Republic of Korea.,Department of Functional Genomics, University of Science and Technology, Republic of Korea
| | - Junhee Park
- Department of Life Science, University of Seoul, Republic of Korea
| | - Inhee Choi
- Department of Life Science, University of Seoul, Republic of Korea
| | - Youngmi Kim Pak
- Human Health and Environmental Toxins Research Center, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, Republic of Korea.,Department of Physiology, Kyung Hee University, College of Medicine, Seoul, Republic of Korea
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Fakhrullin R, Nigamatzyanova L, Fakhrullina G. Dark-field/hyperspectral microscopy for detecting nanoscale particles in environmental nanotoxicology research. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 772:145478. [PMID: 33571774 DOI: 10.1016/j.scitotenv.2021.145478] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/22/2021] [Accepted: 01/24/2021] [Indexed: 06/12/2023]
Abstract
Nanoscale contaminants (including engineered nanoparticles and nanoplastics) pose a significant threat to organisms and environment. Rapid and non-destructive detection and identification of nanosized materials in cells, tissues and organisms is still challenging, although a number of conventional methods exist. These approaches for nanoparticles imaging and characterisation both inside the cytoplasm and on the cell or tissue outer surfaces, such as electron or scanning probe microscopies, are unquestionably potent tools, having excellent resolution and supplemented with chemical analysis capabilities. However, imaging and detection of nanomaterials in situ, in wet unfixed and even live samples, such as living isolated cells, microorganisms, protozoans and miniature invertebrates using electron microscopy is practically impossible, because of the elaborate sample preparation requiring chemical fixation, contrast staining, matrix embedding and exposure into vacuum. Atomic force microscopy, in several cases, can be used for imaging and mechanical analysis of live cells and organisms under ambient conditions, however this technique allows for investigation of surfaces. Therefore, a different approach allowing for imaging and differentiation of nanoscale particles in wet samples is required. Dark-field microscopy as an optical microscopy technique has been popular among researchers, mostly for imaging relatively large specimens. In recent years, the so-called "enhanced dark field" microscopy based on using higher numerical aperture light condensers and variable numerical aperture objectives has emegred, which allows for imaging of nanoscale particles (starting from 5 nm nanospheres) using almost conventional optical microscopy methodology. Hyperspectral imaging can turn a dark-field optical microscope into a powerful chemical characterisation tool. As a result, this technique is becoming popular in environmental nanotoxicology studies. In this Review Article we introduce the reader into the methodology of enhanced dark-field and dark-field-based hyperspectral microscopy, covering the most important advances in this rapidly-expanding area of environmental nanotoxicology.
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Affiliation(s)
- Rawil Fakhrullin
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kreml uramı 18, Kazan 420008, Republic of Tatarstan, Russian Federation.
| | - Läysän Nigamatzyanova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kreml uramı 18, Kazan 420008, Republic of Tatarstan, Russian Federation
| | - Gölnur Fakhrullina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kreml uramı 18, Kazan 420008, Republic of Tatarstan, Russian Federation
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Park EJ, Kim SN, Yoon C, Cho JW, Lee GH, Kim DW, Park J, Choi I, Lee SH, Song J, Lim HJ, Kang MS, Lee HS. Repeated intratracheal instillation of zinc oxide nanoparticles induced pulmonary damage and a systemic inflammatory response in cynomolgus monkeys. Nanotoxicology 2021; 15:621-635. [PMID: 33870832 DOI: 10.1080/17435390.2021.1905899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Recently, some researchers have demonstrated that inhaled zinc oxide nanoparticles (ZnONPs) induce an acute systemic inflammatory response in workers. Considering nonhuman primates are preferably considered an animal model for translational research due to their proven similarity with humans in terms of genetics and physiology, we intratracheally instilled ZnONPs to cynomolgus monkey for 14 days and identified the toxic mechanism and bioaccumulation. ZnONPs were rapidly ionized or aggregated in a simulated pulmonary fluid, and they attracted neutrophils to the lungs and increased the pulmonary level of inflammatory mediators. Additionally, thickened alveolar walls, fibrin clots, and hemorrhages were observed in the lungs of the monkeys instilled with the higher dose accompanied by cell debris in the alveolar ducts and alveoli. Dark-field microscopy images revealed translocation of ZnONPs into other tissues accompanied by an increase in the relative weight of livers to body weight. In addition, when instilled at the higher dose, the albumin/globulin ratio notably decreased compared to the control, whereas the C-reactive protein (CRP) level was significantly elevated. ZnONPs also clearly induced apoptotic cell death in a 24 h exposure to alveolar macrophages. Taken together, part of inhaled ZnONPs may be ionized in the lung, resulting in acute toxic effects, including cell death and tissue damage, and the rest may move to other tissues in the form of particles, causing a systemic inflammatory response. Based on the proven evidence among workers, we also suggest that the CRP level can be recommended as a biomarker for ZnONPs-induced adverse health effects.
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Affiliation(s)
- Eun-Jung Park
- East-West Medical Science Research Institute, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, Republic of Korea.,Human Health and Environmental Toxins Research Center, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, Republic of Korea.,Department of Biomedical Science and Technology, Graduate school, Kyung Hee University, Seoul, South Korea
| | - Soo Nam Kim
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea.,Bio-Health Convergence Institute GLP Lab, Korea Testing Certification Institute, Cheongju, Republic of Korea
| | - Cheolho Yoon
- Ochang Center, Korea Basic Science Institute, Seoul, South Korea
| | - Jae-Woo Cho
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea.,Toxicologic Pathology Research Group, Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Gwang-Hee Lee
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul, South Korea
| | - Dong-Wan Kim
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul, South Korea
| | - Junhee Park
- Department of Life Science, University of Seoul, Seoul, South Korea
| | - Inhee Choi
- Department of Life Science, University of Seoul, Seoul, South Korea
| | - Seung Hyeun Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Jeongah Song
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea
| | - Hyun-Ji Lim
- Department of Biomedical Science and Technology, Graduate school, Kyung Hee University, Seoul, South Korea
| | - Min-Sung Kang
- Department of Biomedical Science and Technology, Graduate school, Kyung Hee University, Seoul, South Korea.,Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea
| | - Hong-Soo Lee
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea
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9
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Garcés M, Cáceres L, Chiappetta D, Magnani N, Evelson P. Current understanding of nanoparticle toxicity mechanisms and interactions with biological systems. NEW J CHEM 2021. [DOI: 10.1039/d1nj01415c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Nanotechnology is an emerging science involving the manipulation of matter on the nanometer scale.
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Affiliation(s)
- Mariana Garcés
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Departamento de Ciencias Químicas
- Cátedra de Química General e Inorgánica
- Buenos Aires
| | - Lourdes Cáceres
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Departamento de Ciencias Químicas
- Cátedra de Química General e Inorgánica
- Buenos Aires
| | - Diego Chiappetta
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Cátedra de Tecnología Farmacéutica I
- Buenos Aires
- Argentina
| | - Natalia Magnani
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Departamento de Ciencias Químicas
- Cátedra de Química General e Inorgánica
- Buenos Aires
| | - Pablo Evelson
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Departamento de Ciencias Químicas
- Cátedra de Química General e Inorgánica
- Buenos Aires
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10
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Russ KA, Thompson JA, Reynolds JS, Mercer RR, Porter DW, McKinney W, Dey RD, Barger M, Cumpston J, Batchelor TP, Kashon ML, Kodali V, Jackson MC, Sriram K, Fedan JS. Biological effects of inhaled hydraulic fracturing sand dust. IV. Pulmonary effects. Toxicol Appl Pharmacol 2020; 409:115284. [PMID: 33068619 PMCID: PMC7736927 DOI: 10.1016/j.taap.2020.115284] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/07/2020] [Accepted: 10/10/2020] [Indexed: 01/12/2023]
Abstract
Hydraulic fracturing creates fissures in subterranean rock to increase the flow and retrieval of natural gas. Sand ("proppant") in fracking fluid injected into the well bore maintains fissure patency. Fracking sand dust (FSD) is generated during manipulation of sand to prepare the fracking fluid. Containing respirable crystalline silica, FSD could pose hazards similar to those found in work sites where silica inhalation induces lung disease such as silicosis. This study was performed to evaluate the possible toxic effects following inhalation of a FSD (FSD 8) in the lung and airways. Rats were exposed (6 h/d × 4 d) to 10 or 30 mg/m3 of a FSD collected at a gas well, and measurements were performed 1, 7, 27 and, in one series of experiments, 90 d post-exposure. The following ventilatory and non-ventilatory parameters were measured in vivo and/or in vitro: 1) lung mechanics (respiratory system resistance and elastance, tissue damping, tissue elastance, Newtonian resistance and hysteresivity); 2) airway reactivity to inhaled methacholine (MCh); airway epithelium integrity (isolated, perfused trachea); airway efferent motor nerve activity (electric field stimulation in vitro); airway smooth muscle contractility; ion transport in intact and cultured epithelium; airway effector and sensory nerves; tracheal particle deposition; and neurogenic inflammation/vascular permeability. FSD 8 was without large effect on most parameters, and was not pro-inflammatory, as judged histologically and in cultured epithelial cells, but increased reactivity to inhaled MCh at some post-exposure time points and affected Na+ transport in airway epithelial cells.
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Affiliation(s)
- Kristen A Russ
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Janet A Thompson
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Jeffrey S Reynolds
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Robert R Mercer
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Dale W Porter
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Walter McKinney
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Richard D Dey
- Department of Physiology and Pharmacology, Anatomy and Laboratory Medicine, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506, United States of America; Department of Pathology, Anatomy and Laboratory Medicine, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506, United States of America
| | - Mark Barger
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Jared Cumpston
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Thomas P Batchelor
- Department of Physiology and Pharmacology, Anatomy and Laboratory Medicine, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506, United States of America; Department of Pathology, Anatomy and Laboratory Medicine, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506, United States of America
| | - Michael L Kashon
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Vamsi Kodali
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Mark C Jackson
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Krishnan Sriram
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Jeffrey S Fedan
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America.
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11
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Roach KA, Stefaniak AB, Roberts JR. Metal nanomaterials: Immune effects and implications of physicochemical properties on sensitization, elicitation, and exacerbation of allergic disease. J Immunotoxicol 2019; 16:87-124. [PMID: 31195861 PMCID: PMC6649684 DOI: 10.1080/1547691x.2019.1605553] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 03/15/2019] [Accepted: 04/05/2019] [Indexed: 12/25/2022] Open
Abstract
The recent surge in incorporation of metallic and metal oxide nanomaterials into consumer products and their corresponding use in occupational settings have raised concerns over the potential for metals to induce size-specific adverse toxicological effects. Although nano-metals have been shown to induce greater lung injury and inflammation than their larger metal counterparts, their size-related effects on the immune system and allergic disease remain largely unknown. This knowledge gap is particularly concerning since metals are historically recognized as common inducers of allergic contact dermatitis, occupational asthma, and allergic adjuvancy. The investigation into the potential for adverse immune effects following exposure to metal nanomaterials is becoming an area of scientific interest since these characteristically lightweight materials are easily aerosolized and inhaled, and their small size may allow for penetration of the skin, which may promote unique size-specific immune effects with implications for allergic disease. Additionally, alterations in physicochemical properties of metals in the nano-scale greatly influence their interactions with components of biological systems, potentially leading to implications for inducing or exacerbating allergic disease. Although some research has been directed toward addressing these concerns, many aspects of metal nanomaterial-induced immune effects remain unclear. Overall, more scientific knowledge exists in regards to the potential for metal nanomaterials to exacerbate allergic disease than to their potential to induce allergic disease. Furthermore, effects of metal nanomaterial exposure on respiratory allergy have been more thoroughly-characterized than their potential influence on dermal allergy. Current knowledge regarding metal nanomaterials and their potential to induce/exacerbate dermal and respiratory allergy are summarized in this review. In addition, an examination of several remaining knowledge gaps and considerations for future studies is provided.
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Affiliation(s)
- Katherine A Roach
- a Allergy and Clinical Immunology Branch (ACIB) , National Institute of Occupational Safety and Health (NIOSH) , Morgantown , WV , USA
- b School of Pharmacy , West Virginia University , Morgantown , WV , USA
| | - Aleksandr B Stefaniak
- c Respiratory Health Division (RHD) , National Institute of Occupational Safety and Health (NIOSH) , Morgantown , WV , USA
| | - Jenny R Roberts
- a Allergy and Clinical Immunology Branch (ACIB) , National Institute of Occupational Safety and Health (NIOSH) , Morgantown , WV , USA
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12
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Siegrist KJ, Reynolds SH, Porter DW, Mercer RR, Bauer AK, Lowry D, Cena L, Stueckle TA, Kashon ML, Wiley J, Salisbury JL, Mastovich J, Bunker K, Sparrow M, Lupoi JS, Stefaniak AB, Keane MJ, Tsuruoka S, Terrones M, McCawley M, Sargent LM. Mitsui-7, heat-treated, and nitrogen-doped multi-walled carbon nanotubes elicit genotoxicity in human lung epithelial cells. Part Fibre Toxicol 2019; 16:36. [PMID: 31590690 PMCID: PMC6781364 DOI: 10.1186/s12989-019-0318-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 08/19/2019] [Indexed: 12/22/2022] Open
Abstract
Background The unique physicochemical properties of multi-walled carbon nanotubes (MWCNT) have led to many industrial applications. Due to their low density and small size, MWCNT are easily aerosolized in the workplace making respiratory exposures likely in workers. The International Agency for Research on Cancer designated the pristine Mitsui-7 MWCNT (MWCNT-7) as a Group 2B carcinogen, but there was insufficient data to classify all other MWCNT. Previously, MWCNT exposed to high temperature (MWCNT-HT) or synthesized with nitrogen (MWCNT-ND) have been found to elicit attenuated toxicity; however, their genotoxic and carcinogenic potential are not known. Our aim was to measure the genotoxicity of MWCNT-7 compared to these two physicochemically-altered MWCNTs in human lung epithelial cells (BEAS-2B & SAEC). Results Dose-dependent partitioning of individual nanotubes in the cell nuclei was observed for each MWCNT material and was greatest for MWCNT-7. Exposure to each MWCNT led to significantly increased mitotic aberrations with multi- and monopolar spindle morphologies and fragmented centrosomes. Quantitative analysis of the spindle pole demonstrated significantly increased centrosome fragmentation from 0.024–2.4 μg/mL of each MWCNT. Significant aneuploidy was measured in a dose-response from each MWCNT-7, HT, and ND; the highest dose of 24 μg/mL produced 67, 61, and 55%, respectively. Chromosome analysis demonstrated significantly increased centromere fragmentation and translocations from each MWCNT at each dose. Following 24 h of exposure to MWCNT-7, ND and/or HT in BEAS-2B a significant arrest in the G1/S phase in the cell cycle occurred, whereas the MWCNT-ND also induced a G2 arrest. Primary SAEC exposed for 24 h to each MWCNT elicited a significantly greater arrest in the G1 and G2 phases. However, SAEC arrested in the G1/S phase after 72 h of exposure. Lastly, a significant increase in clonal growth was observed one month after exposure to 0.024 μg/mL MWCNT-HT & ND. Conclusions Although MWCNT-HT & ND cause a lower incidence of genotoxicity, all three MWCNTs cause the same type of mitotic and chromosomal disruptions. Chromosomal fragmentation and translocations have not been observed with other nanomaterials. Because in vitro genotoxicity is correlated with in vivo genotoxic response, these studies in primary human lung cells may predict the genotoxic potency in exposed human populations. Electronic supplementary material The online version of this article (10.1186/s12989-019-0318-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Katelyn J Siegrist
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, WV, 26505, USA.,Department of Occupational and Environmental Health Sciences, West Virginia University, Morgantown, WV, 26506, USA
| | - Steven H Reynolds
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, WV, 26505, USA
| | - Dale W Porter
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, WV, 26505, USA
| | - Robert R Mercer
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, WV, 26505, USA
| | - Alison K Bauer
- Anschutz Medical Campus, Department of Environmental and Occupational Health, University of Colorado, Aurora, CO, 80045, USA
| | - David Lowry
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, WV, 26505, USA
| | - Lorenzo Cena
- Department of Health, West Chester University, West Chester, PA, 19383, USA
| | - Todd A Stueckle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, WV, 26505, USA
| | - Michael L Kashon
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, WV, 26505, USA
| | - John Wiley
- Department of Pediatrics, East Carolina University, Greenville, NC, 27834, USA
| | | | | | - Kristin Bunker
- RJ Lee Group, 350 Hochberg Road, Monroeville, PA, 15146, USA
| | - Mark Sparrow
- Independent Consultant, Allison Park, PA, 15101, USA
| | - Jason S Lupoi
- RJ Lee Group, 350 Hochberg Road, Monroeville, PA, 15146, USA
| | - Aleksandr B Stefaniak
- Respiratory Health Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - Michael J Keane
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, WV, 26505, USA
| | | | | | - Michael McCawley
- Department of Occupational and Environmental Health Sciences, West Virginia University, Morgantown, WV, 26506, USA
| | - Linda M Sargent
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Rd, Morgantown, WV, 26505, USA.
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13
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Zang Y, Gong L, Mei L, Gu Z, Wang Q. Bi 2WO 6 Semiconductor Nanoplates for Tumor Radiosensitization through High- Z Effects and Radiocatalysis. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18942-18952. [PMID: 31058495 DOI: 10.1021/acsami.9b03636] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The radioresistance of tumor cells is considered to be an Achilles' heel of cancer radiotherapy. Thus, an effective and biosafe radiosensitizer is highly desired but hitherto remains a big challenge. With the rapid progress of nanomedicine, multifunctional inorganic nanoradiosensitizers offer a new route to overcome the radioresistance and enhance the efficacy of radiotherapy. Herein, poly(vinylpyrrolidone) (PVP)-modified Bi2WO6 nanoplates with good biocompatibility were synthesized through a simple hydrothermal process and applied as a radiosensitizer for the enhancement of radiotherapy for the first time. On the one hand, the high- Z elements Bi ( Z = 83) and W ( Z = 74) endow PVP-Bi2WO6 with better X-ray energy deposition performance and thus enhance radiation-induced DNA damages. On the other hand, Bi2WO6 semiconductors exhibit significant photocurrent and photocatalytic-like radiocatalytic activity under X-ray irradiation, giving rise to the effective separation of electron/hole (e-/h+) pairs and subsequently promoting the generation of cytotoxic reactive oxygen species, especially hydroxyl radicals (•OH). The γ-H2AX and clonogenic assays demonstrated that PVP-Bi2WO6 could efficiently increase cellular DNA damages and colony formations under X-ray irradiation. These versatile features endowed PVP-Bi2WO6 nanoplates with enhanced radiotherapy efficacy in animal models. In addition, Bi2WO6 nanoplates can also serve as good X-ray computed tomography imaging contrast agents. Our findings provide an alternative nanotechnology strategy for tumor radiosensitization through simultaneous radiation energy deposition and radiocatalysis.
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Affiliation(s)
- Yuan Zang
- College of Civil Engineering and Architecture , Shandong University of Science and Technology , Qingdao 266590 , China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
| | - Linji Gong
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
- University of Chinese Academy of Science , Beijing 100049 , China
| | - Linqiang Mei
- College of Civil Engineering and Architecture , Shandong University of Science and Technology , Qingdao 266590 , China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
| | - Zhanjun Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049 , China
- University of Chinese Academy of Science , Beijing 100049 , China
| | - Qing Wang
- College of Civil Engineering and Architecture , Shandong University of Science and Technology , Qingdao 266590 , China
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14
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Neu-Baker NM, Eastlake AC, Brenner SA. Sample preparation method for visualization of nanoparticulate captured on mixed cellulose ester filter media by enhanced darkfield microscopy and hyperspectral imaging. Microsc Res Tech 2019; 82:878-883. [PMID: 30768825 DOI: 10.1002/jemt.23231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 12/10/2018] [Accepted: 01/20/2019] [Indexed: 12/20/2022]
Abstract
A significant hurdle in conducting effective health and safety hazard analysis and risk assessment for the nanotechnology workforce is the lack of a rapid method for the direct visualization and analysis of filter media used to sample nanomaterials from work environments that represent potential worker exposure. Current best-known methods include transmission electron microscopy (TEM) coupled with energy dispersive x-ray spectroscopy (EDS) for elemental identification. TEM-EDS is considerably time-, cost-, and resource-intensive, which may prevent timely health and safety recommendations and corrective actions. A rapid screening method is currently being explored using enhanced darkfield microscopy with hyperspectral imaging (EDFM-HSI). For this approach to be effective, rapid, and easy, sample preparation that is amenable to the analytical technique is needed. Here, we compare the sample preparation steps for mixed cellulose ester (MCE) filter media specified in NIOSH Method 7400-Asbestos and Other Fibers by Phase Contrast Microscopy (PCM)-against a new method, which involves saturation of the filter media with acetone. NIOSH Method 7400 was chosen as a starting point since it is an established technique for preparing transparent MCE filters for optical microscopy. Limitations in this method led to the development and comparison of a new method. The new method was faster, easier, and rendered filters more transparent, resulting in improved visualization and analysis of nanomaterials via EDFM-HSI. This new method is suitable for a rapid screening protocol due to its speed, ease of use, and the improvement in image acquisition and analysis.
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Affiliation(s)
- Nicole M Neu-Baker
- College of Nanoscale Science, Nanobioscience Constellation, State University of New York (SUNY) Polytechnic Institute, College of Nanoscale Science, New York
| | - Adrienne C Eastlake
- Education and Information Division (EID), National Institute for Occupational Safety and Health (NIOSH), Cincinnati, Ohio
| | - Sara A Brenner
- College of Nanoscale Science, Nanobioscience Constellation, State University of New York (SUNY) Polytechnic Institute, College of Nanoscale Science, New York
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15
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Hettiarachchi E, Paul S, Cadol D, Frey B, Rubasinghege G. Mineralogy Controlled Dissolution of Uranium from Airborne Dust in Simulated Lung Fluids (SLFs) and Possible Health Implications. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS 2019; 6:62-67. [PMID: 30775400 PMCID: PMC6372124 DOI: 10.1021/acs.estlett.8b00557] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The recent increase in cardiovascular and metabolic disease in the Navajo population residing close to the Grants Mining District (GMD) in New Mexico is suggested to be due to exposure to environmental contaminants, in particular uranium in respirable dusts. However, the chemistry of uranium-containing-dust dissolution in lung fluids and the role of mineralogy are poorly understood, as is their impact on toxic effects. The current study is focused on the dissolution of xcontaining-dust, collected from several sites near Jackpile and St. Anthony mines in the GMD, in two simulated lung fluids (SLFs): Gamble's solution (GS) and Artificial Lysosomal Fluid (ALF). We observe that the respirable dust includes uranium minerals that yield the uranyl cation, UO2 2+, as the primary dissolved species in these fluids. Dust rich in uraninite and carnotite is more soluble in GS, which mimics interstitial conditions of the lungs. In contrast, dust with low uraninite and high kaolinite is more soluble in ALF, which simulates the alveolar macrophage environment during phagocytosis. Moreover, geochemical modeling, performed using PHREEQC, is in good agreement with our experimental results. Thus, the current study highlights the importance of site-specific toxicological assessments across mining districts with the focus on their mineralogical differences.
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Affiliation(s)
- Eshani Hettiarachchi
- Department of Chemistry, New Mexico Tech, 801 Leroy Place, Socorro, New Mexico 87801, United States
| | - Shaylene Paul
- Department of Environmental Science, Navajo Technical University, Lowerpoint Road, Crownpoint, New Mexico 87313, United States
| | - Daniel Cadol
- Department of Earth and Environmental Science, New Mexico Tech, 801 LeRoy Pl, Socorro, New Mexico 87801, United States
| | - Bonnie Frey
- New Mexico Bureau of Geology, New Mexico Tech, 801 LeRoy Pl, Socorro, New Mexico 87801, United States
| | - Gayan Rubasinghege
- Department of Chemistry, New Mexico Tech, 801 Leroy Place, Socorro, New Mexico 87801, United States
- Corresponding Author: G. Rubasinghege. .
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16
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Distribution of Paramagnetic Fe₂O₃/SiO₂⁻Core/Shell Nanoparticles in the Rat Lung Studied by Time-of-Flight Secondary Ion Mass Spectrometry: No Indication for Rapid Lipid Adsorption. NANOMATERIALS 2018; 8:nano8080571. [PMID: 30049943 PMCID: PMC6116249 DOI: 10.3390/nano8080571] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 07/23/2018] [Accepted: 07/24/2018] [Indexed: 11/27/2022]
Abstract
Amorphous silica nanoparticles comprise a class of widely used industrial nanomaterials, which may elicit acute inflammation in the lung. These materials have a large specific surface to which components of the pulmonary micro-milieu can bind. To conduct appropriate binding studies, paramagnetic Fe2O3/SiO2 core/shell nanoparticles (Fe-Si-NP) may be used as an easy-to-isolate silica surrogate, if several prerequisites are fulfilled. To this end, we investigated the distribution of Fe, Si, protein and phosphatidylcholine (PC) by Time-of-Flight secondary ion mass spectrometry (ToF-SIMS) in cryo-sections from the rat lungs to which Fe-Si-NP had been administered for 30 min. Regions-of-interest were identified and analyzed with incident light and enhanced dark-field microscopy (DFM). Fe-Si-NP particles (primary particle size by electron microscopy: 10–20 nm; aggregate size by tracking analysis: 190 ± 20 nm) and agglomerates thereof were mainly attached to alveolar walls and only marginally internalized by cells such as alveolar macrophages. The localization of Fe-Si-NP by DFM was confirmed by ToF-SIMS signals from both, Fe and Si ions. With respect to an optimized signal-to-noise ratio, Fe+, Si+, CH4N+ and the PC head group (C5H15NO4P+) were the most versatile ions to detect iron, silica, protein, and PC, respectively. Largely congruent Fe+ and Si+ signals demonstrated that the silica coating of Fe-Si-NP remained stable under the conditions of the lung. PC, as a major lipid of the pulmonary surfactant, was colocalized with the protein signal alongside alveolar septa, but was not detected on Fe-Si-NP, suggesting that silica nanoparticles do not adsorb lipids of the lung surfactant under native conditions. The study shows that ToF-SIMS is a valuable technique with adequate spatial resolution to analyze nanoparticles together with organic molecules in the lung. The paramagnetic Fe-Si-NP appear well suited to study the binding of proteins to silica nanomaterials in the lung.
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17
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Affiliation(s)
- John Howard
- National Institute for Occupational Safety and Health, Washington, DC, USA
| | - Vladimir Murashov
- National Institute for Occupational Safety and Health, Washington, DC, USA
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