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Totito TC, Laatikainen K, Bode-Aluko C, Pereao O, Petrik L. Fabrication and Characterization of Electrospun Waste Polyethylene Terephthalate Blended with Chitosan: A Potential Single-Use Material. Polymers (Basel) 2023; 15:polym15020442. [PMID: 36679322 PMCID: PMC9861542 DOI: 10.3390/polym15020442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 01/18/2023] Open
Abstract
Textile single-use products are dominantly used for hygiene and personal care, many of which are non-biodegradable and are frequently discarded into sewerage systems, thus causing blockages. Thus, there is a need to move towards water-soluble textiles. This research study focuses on transforming or repurposing biomass material and synthetic reusable waste plastic materials to improve waste. Chitosan (CS) nanofibers could be used in single-use nonwoven fabric or biodegradable tissues, as the water-soluble properties of chitosan nanofibers make them the perfect material for single-use applications. Furthermore, CS was blended with polyethylene terephthalate (PET) polymer and PET-based waste plastic (CS-WPET) to slow the CS nanofibers' water degradability and strengthen the durability of the nanofiber which could be used as air filters. The CS-TFA and CS-TFA/DCM nanofiber diameters were 95.58 ± 39.28 nm or 907.94 ± 290.18 nm, respectively, as measured from the HRSEM images. The CS-PET and CS-WPET hybrid nanofibers had fiber diameters of 246.13 ± 96.36 or 58.99 ± 20.40 nm, respectively. The thermal durability of the nanofibers was tested by TGA, which showed that CS-TFA/DCM nanofibers had sufficient thermal stability up to 150 °C, making them suitable for filter or fabric use at moderate temperatures. The blended nanofibers (CS-PET and CS-WPET) were thermally stable up to 160 °C. In the aqueous medium stability test, CS-PET and CS-WPET hybrid nanofibers had a slower degradation rate and were easily dissolved, while the CS nanofibers were rapidly and completely dissolved in an aqueous medium. Blending waste PET with CS allows it to be recycled into a useful single-use, non-woven textile, with greater water solubility than unmodified PET nanofibers but more durability than CS nanofibers on their own.
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Affiliation(s)
- Thandiwe Crystal Totito
- Environmental and Nanoscience Research Group, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
- Correspondence:
| | - Katri Laatikainen
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology LUT, Yliopistonkatu 34, FIN-53850 Lappeenranta, Finland
| | - Chris Bode-Aluko
- Environmental and Nanoscience Research Group, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
| | - Omoniyi Pereao
- Environmental and Nanoscience Research Group, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
| | - Leslie Petrik
- Environmental and Nanoscience Research Group, Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
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2
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El-Samad LM, Bakr NR, El-Ashram S, Radwan EH, Abdul Aziz KK, Hussein HK, El Wakil A, Hassan MA. Silver nanoparticles instigate physiological, genotoxicity, and ultrastructural anomalies in midgut tissues of beetles. Chem Biol Interact 2022; 367:110166. [PMID: 36087814 DOI: 10.1016/j.cbi.2022.110166] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/13/2022] [Accepted: 09/02/2022] [Indexed: 01/01/2023]
Abstract
Silver nanoparticles (AgNPs) have long been materials of great interest in numerous fields; however, there is escalating alarm over their toxicity to public health since exposure to these particles is inevitable. This study sheds light on the deleterious impacts of AgNPs on the midgut tissues of beetles (Blaps polychresta) collected from Egypt as a biological model. The investigations were conducted on the beetles administered with a sublethal dose of AgNPs (0.03 mg/g body weight) after 30 days. Oxidative stress parameters and antioxidant enzyme activities were assessed, which exposed critical disruption in the antioxidant defense system of treated beetles. Remarkably, metallothionein (MT) gene expression was significantly increased, while reduced glutathione (GSH) level was notably decreased in midgut tissues subjected to AgNPs. These findings manifestly imply the presence of overproduction in terms of reactive oxygen species (ROS) inside the cells. Additionally, DNA impairment and apoptosis of midgut cells were appraised employing comet and flow cytometry analyses, respectively. The comet results revealed a significant increase in comet cells for the AgNPs treated beetles compared with the control group. Furthermore, the apoptosis results demonstrated a substantial diminution in viable cells with significant growth in apoptotic cells in midgut cells exposed to AgNPs, manifesting their striking correlation with comet and biochemical findings. Noticeably, the histopathological and ultrastructural inspections revealed substantial aberrations in the midgut tissues in the AgNPs treated group, substantiating the previous results. As far as we know, no research has been found that surveyed how the AgNPs at low doses affect the midgut tissues of beetles. Overall, these findings evince the aberrant influences of AgNPs on living organisms.
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Affiliation(s)
- Lamia M El-Samad
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Nahed R Bakr
- Department of Zoology, Faculty of Science, Damanhour University, Egypt
| | - Saeed El-Ashram
- College of Life Science and Engineering, Foshan University, 18 Jiangwan Street, Foshan, 528231, Guangdong Province, China; Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh, 33516, Egypt
| | - Eman H Radwan
- Department of Zoology, Faculty of Science, Damanhour University, Egypt
| | | | - Hussein K Hussein
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Abeer El Wakil
- Department of Biological and Geological Sciences, Faculty of Education, Alexandria University, Egypt
| | - Mohamed A Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P.O. Box: 21934, Alexandria, Egypt; University Medical Center Göttingen, Georg-August-University, 37073 Göttingen, Germany.
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3
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Alves Feitosa K, de Oliveira Correia R, Maragno Fattori AC, Albuquerque YR, Brassolatti P, Flores Luna G, de Almeida Rodolpho JM, T Nogueira C, Cancino Bernardi J, Speglich C, de Freitas Anibal F. Toxicological effects of the mixed iron oxide nanoparticle (Fe 3O 4 NP) on murine fibroblasts LA-9. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2022; 85:649-670. [PMID: 35469539 DOI: 10.1080/15287394.2022.2068711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The increase in large-scale production of magnetic nanoparticles (NP) associated with the incomplete comprehensive knowledge regarding the potential risks of their use on environmental and human health makes it necessary to study the biological effects of these particles on organisms at the cellular level. The aim of this study to examine the cellular effects on fibroblast lineage LA-9 after exposure to mixed iron oxide NP (Fe3O4 NP). The following analyses were performed: field emission gun-scanning electron microscopy (SEM-FEG), dynamic light scattering (DLS), zeta potential, ultraviolet/visible region spectroscopy (UV/VIS), and attenuated total reactance-Fourier transform infrared (ATR-FTIR) spectroscopy analyses for characterization of the NP. The assays included cell viability, morphology, clonogenic potential, oxidative stress as measurement of reactive oxygen species (ROS) and nitric oxide (NO) levels, cytokines quantification interleukin 6 (IL-6) and tumor necrosis factor (TNF), NP uptake, and cell death. The size of Fe3O4 NP was 26.3 nm when evaluated in water through DLS. Fe3O4 NP did not reduce fibroblast cell viability until the highest concentration tested (250 µg/ml), which showed a decrease in clonogenic potential as well as small morphological changes after exposure for 48 and 72 hr. The NP concentration of 250 µg/ml induced enhanced ROS and NO production after 24 hr treatment. The uptake assay exhibited time-dependent Fe3O4 NP internalization at all concentrations tested with no significant cell death. Hence, exposure of fibroblasts to Fe3O4 NP-induced oxidative stress but not reduced cell viability or death. However, the decrease in the clonogenic potential at the highest concentration demonstrates cytotoxic effects attributed to Fe3O4 NP which occurred on the 7th day after exposure.
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Affiliation(s)
- Karina Alves Feitosa
- Department of Morphology and Pathology, Inflammation and Infectious Diseases Laboratory, Federal University of São Carlos, São Carlos, Brazil
| | - Ricardo de Oliveira Correia
- Department of Morphology and Pathology, Inflammation and Infectious Diseases Laboratory, Federal University of São Carlos, São Carlos, Brazil
| | - Ana Carolina Maragno Fattori
- Department of Morphology and Pathology, Inflammation and Infectious Diseases Laboratory, Federal University of São Carlos, São Carlos, Brazil
| | - Yulli Roxenne Albuquerque
- Department of Morphology and Pathology, Inflammation and Infectious Diseases Laboratory, Federal University of São Carlos, São Carlos, Brazil
| | - Patricia Brassolatti
- Department of Morphology and Pathology, Inflammation and Infectious Diseases Laboratory, Federal University of São Carlos, São Carlos, Brazil
| | - Genoveva Flores Luna
- Department of Morphology and Pathology, Inflammation and Infectious Diseases Laboratory, Federal University of São Carlos, São Carlos, Brazil
| | - Joice Margareth de Almeida Rodolpho
- Department of Morphology and Pathology, Inflammation and Infectious Diseases Laboratory, Federal University of São Carlos, São Carlos, Brazil
| | | | - Juliana Cancino Bernardi
- Nanomedicine and Nanotoxicology Group, Physics Institute of São Carlos, University of São Paulo, São Carlos, Brazil
| | - Carlos Speglich
- Leopoldo Américo Miguez de Mello Research Center CENPES/Petrobras, Rio de Janeiro, Brazil
| | - Fernanda de Freitas Anibal
- Department of Morphology and Pathology, Inflammation and Infectious Diseases Laboratory, Federal University of São Carlos, São Carlos, Brazil
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4
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O’Connell RC, Dodd TM, Clingerman SM, Fluharty KL, Coyle J, Stueckle TA, Porter DW, Bowers L, Stefaniak AB, Knepp AK, Derk R, Wolfarth M, Mercer RR, Boots TE, Sriram K, Hubbs AF. Developing a Solution for Nasal and Olfactory Transport of Nanomaterials. Toxicol Pathol 2022; 50:329-343. [PMID: 35416103 PMCID: PMC9872725 DOI: 10.1177/01926233221089209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
With advances in nanotechnology, engineered nanomaterial applications are a rapidly growing sector of the economy. Some nanomaterials can reach the brain through nose-to-brain transport. This transport creates concern for potential neurotoxicity of insoluble nanomaterials and a need for toxicity screening tests that detect nose-to-brain transport. Such tests can involve intranasal instillation of aqueous suspensions of nanomaterials in dispersion media that limit particle agglomeration. Unfortunately, protein and some elements in existing dispersion media are suboptimal for potential nose-to-brain transport of nanomaterials because olfactory transport has size- and ion-composition requirements. Therefore, we designed a protein-free dispersion media containing phospholipids and amino acids in an isotonic balanced electrolyte solution, a solution for nasal and olfactory transport (SNOT). SNOT disperses hexagonal boron nitride nanomaterials with a peak particle diameter below 100 nm. In addition, multiwalled carbon nanotubes (MWCNTs) in an established dispersion medium, when diluted with SNOT, maintain dispersion with reduced albumin concentration. Using stereomicroscopy and microscopic examination of plastic sections, dextran dyes dispersed in SNOT are demonstrated in the neuroepithelium of the nose and olfactory bulb of B6;129P2-Omptm3Mom/MomJ mice after intranasal instillation in SNOT. These findings support the potential for SNOT to disperse nanomaterials in a manner permitting nose-to-brain transport for neurotoxicity studies.
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Affiliation(s)
- Ryan C. O’Connell
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA,West Virginia University, Morgantown, West Virginia, USA
| | - Tiana M. Dodd
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | | | - Kara L. Fluharty
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Jayme Coyle
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Todd A. Stueckle
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Dale W. Porter
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Lauren Bowers
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | | | - Alycia K. Knepp
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Raymond Derk
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Michael Wolfarth
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Robert R. Mercer
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Theresa E. Boots
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Krishnan Sriram
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Ann F. Hubbs
- Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
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5
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Chen M, Lei B, Wang M, Sun H, Zhang X, Shi J, Fan J, Yao Q, Du S, Qu H, Cheng Y, Ma S, Zhang M, Zhan S. Using PCG-Arginine nanoparticle mediated intranasal delivery of dynorphin A (1–8) to improve neuroprotection in MCAO rats. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.103059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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6
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Harish V, Tewari D, Gaur M, Yadav AB, Swaroop S, Bechelany M, Barhoum A. Review on Nanoparticles and Nanostructured Materials: Bioimaging, Biosensing, Drug Delivery, Tissue Engineering, Antimicrobial, and Agro-Food Applications. NANOMATERIALS 2022; 12:nano12030457. [PMID: 35159802 PMCID: PMC8839643 DOI: 10.3390/nano12030457] [Citation(s) in RCA: 99] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/19/2022] [Accepted: 01/23/2022] [Indexed: 01/27/2023]
Abstract
In the last few decades, the vast potential of nanomaterials for biomedical and healthcare applications has been extensively investigated. Several case studies demonstrated that nanomaterials can offer solutions to the current challenges of raw materials in the biomedical and healthcare fields. This review describes the different nanoparticles and nanostructured material synthesis approaches and presents some emerging biomedical, healthcare, and agro-food applications. This review focuses on various nanomaterial types (e.g., spherical, nanorods, nanotubes, nanosheets, nanofibers, core-shell, and mesoporous) that can be synthesized from different raw materials and their emerging applications in bioimaging, biosensing, drug delivery, tissue engineering, antimicrobial, and agro-foods. Depending on their morphology (e.g., size, aspect ratio, geometry, porosity), nanomaterials can be used as formulation modifiers, moisturizers, nanofillers, additives, membranes, and films. As toxicological assessment depends on sizes and morphologies, stringent regulation is needed from the testing of efficient nanomaterials dosages. The challenges and perspectives for an industrial breakthrough of nanomaterials are related to the optimization of production and processing conditions.
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Affiliation(s)
- Vancha Harish
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144401, India; (V.H.); (D.T.)
| | - Devesh Tewari
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144401, India; (V.H.); (D.T.)
| | - Manish Gaur
- Centre of Biotechnology, University of Allahabad, Prayagraj, Uttar Pradesh 211002, India;
| | - Awadh Bihari Yadav
- Centre of Biotechnology, University of Allahabad, Prayagraj, Uttar Pradesh 211002, India;
- Correspondence: (A.B.Y.); (M.B.); (A.B.)
| | - Shiv Swaroop
- Department of Biochemistry, Central University of Rajasthan, Ajmer 305817, India;
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM UMR 5635, University Montpellier, ENSCM, CNRS, 34730 Montpellier, France
- Correspondence: (A.B.Y.); (M.B.); (A.B.)
| | - Ahmed Barhoum
- NanoStruc Research Group, Chemistry Department, Faculty of Science, Ain Helwan, Cairo 11795, Egypt
- National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, D09 Y074 Dublin, Ireland
- Correspondence: (A.B.Y.); (M.B.); (A.B.)
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7
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Bogdanska A, Gobbo OL, Volkov Y, Prina-Mello A. 3D volume segmentation and reconstruction. Supervised image classification and automated quantification of superparamagnetic iron oxide nanoparticles in histology slides for safety assessment. Nanotoxicology 2021; 15:1151-1167. [PMID: 34752713 DOI: 10.1080/17435390.2021.1991502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
This article presents an automated image-processing workflow for quantitative assessment of SPION accumulation in tissue sections stained with Prussian blue for iron detection. We utilized supervised machine learning with manually labeled features used for training the classifier. Performance of the classifier was validated by 10-fold cross-validation of obtained data and by measuring Dice and Jaccard Similarity Coefficients between manually segmented image and automated segmentation. The proposed approach provides time and cost-effective solution for quantitative imaging analysis of SPION in tissue with a precision similar to that obtained via thresholding method for stain quantification. Furthermore, we exploited the classifiers to generate segmented 3D volumes from histological slides. This enabled visualization of particles which were obscured in original 3D histology stacks. Our approach offers a powerful tool for preclinical assessment of the precise tissue-specific SPION biodistribution, which could affect both their toxicity and their efficacy as nanocarriers for medicines.
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Affiliation(s)
- Anna Bogdanska
- Nanomedicine and Molecular Imaging Group, Trinity Translational Medicine Institute, Trinity College Dublin, the University of Dublin, Dublin, Ireland.,Trinity St James's Cancer Institute, Trinity College Dublin, the University of Dublin, Dublin, Ireland
| | - Oliviero L Gobbo
- Trinity St James's Cancer Institute, Trinity College Dublin, the University of Dublin, Dublin, Ireland.,School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, the University of Dublin, Dublin, Ireland
| | - Yuri Volkov
- Nanomedicine and Molecular Imaging Group, Trinity Translational Medicine Institute, Trinity College Dublin, the University of Dublin, Dublin, Ireland.,Trinity St James's Cancer Institute, Trinity College Dublin, the University of Dublin, Dublin, Ireland.,Laboratory of Biological Characterization of Advanced Materials (LBCAM), Trinity Translational Medicine Institute, Trinity College Dublin, the University of Dublin, Dublin, Ireland
| | - Adriele Prina-Mello
- Nanomedicine and Molecular Imaging Group, Trinity Translational Medicine Institute, Trinity College Dublin, the University of Dublin, Dublin, Ireland.,Trinity St James's Cancer Institute, Trinity College Dublin, the University of Dublin, Dublin, Ireland.,Laboratory of Biological Characterization of Advanced Materials (LBCAM), Trinity Translational Medicine Institute, Trinity College Dublin, the University of Dublin, Dublin, Ireland
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8
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González-Palomo AK, Saldaña-Villanueva K, Cortés-García JD, Fernández-Macias JC, Méndez-Rodríguez KB, Pérez Maldonado IN. Effect of silver nanoparticles (AgNPs) exposure on microRNA expression and global DNA methylation in endothelial cells EA.hy926. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 81:103543. [PMID: 33166681 DOI: 10.1016/j.etap.2020.103543] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 10/30/2020] [Accepted: 10/31/2020] [Indexed: 06/11/2023]
Abstract
The aim of this study was to determine the effect of AgNPs on the epigenome of endothelial cells EA.hy926, including the levels of expression of microRNAs (miRNAs) and global DNA methylation patterns. In addition, evaluation of the expression of inflammatory genes and the levels of VCAM-1 protein (miRNA-126 target) was performed. The expression levels of analyzed miRNAs (microRNAs-126, 155 and 146) were reduced significantly and there were not observed changes in inflammatory gene expression. Regarding the levels of protein vascular cell adhesion molecule 1 (VCAM-1), they increase significantly to 0.5 μM AgNPs at 24 h of exposure. As far as DNA methylation is concerned, we found that AgNPs induce a state of global hyper-methylation. In conclusion, it was demonstrated that direct contact between AgNPs and endothelial cells resulted in the dysregulation of highly enriched and vastly functional miRNAs and DNA hypermethylation, that may have multiple effects on endothelium function and integrity.
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Affiliation(s)
- A K González-Palomo
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, México; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México.
| | - K Saldaña-Villanueva
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, México; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - J D Cortés-García
- Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - J C Fernández-Macias
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, México; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - K B Méndez-Rodríguez
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, México; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - I N Pérez Maldonado
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, México; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
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9
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Ortiz-Castillo JE, Gallo-Villanueva RC, Madou MJ, Perez-Gonzalez VH. Anisotropic gold nanoparticles: A survey of recent synthetic methodologies. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213489] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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10
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Krajnak K, Kan H, Russ KA, McKinney W, Waugh S, Zheng W, Kashon ML, Johnson C, Cumpston J, Fedan JS. Biological effects of inhaled hydraulic fracturing sand dust. VI. Cardiovascular effects. Toxicol Appl Pharmacol 2020; 406:115242. [PMID: 32931794 DOI: 10.1016/j.taap.2020.115242] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/27/2020] [Accepted: 09/09/2020] [Indexed: 12/24/2022]
Abstract
Hydraulic fracturing is used to access oil and natural gas reserves. This process involves the high-pressure injection of fluid to fracture shale. Fracking fluid contains approximately 95% water, chemicals and 4.5% fracking sand. Workers may be exposed to fracking sand dust (FSD) during the manipulation of the sand, and negative health consequences could occur if FSD is inhaled. In the absence of any information about its potential toxicity, a comprehensive rat animal model study (see Fedan et al., 2020) was designed to investigate the bioactivities of several FSDs in comparison to MIN-U-SIL® 5, a respirable α-quartz reference dust used in previous animal models of silicosis, in several organ systems. The goal of this study was to assess the effects of inhalation of one FSD, i.e., FSD 8, on factors and tissues that affect cardiovascular function. Male rats were exposed to 10 or 30 mg/m3 FSD (6 h/d for 4 d) by whole body inhalation, with measurements made 1, 7 or 27 d post-exposure. One day following exposure to 10 mg/m3 FSD the sensitivity to phenylephrine-induced vasoconstriction in tail arteries in vitro was increased. FSD exposure at both doses resulted in decreases in heart rate (HR), HR variability, and blood pressure in vivo. FSD induced changes in hydrogen peroxide concentrations and transcript levels for pro-inflammatory factors in heart tissues. In kidney, expression of proteins indicative of injury and remodeling was reduced after FSD exposure. When analyzed using regression analysis, changes in proteins involved in repair and remodeling were correlated. Thus, it appears that inhalation of FSD does have some prolonged effects on cardiovascular, and, possibly, renal function. The findings also provide information regarding potential mechanisms that may lead to these changes, and biomarkers that could be examined to monitor physiological changes that could be indicative of impending cardiovascular dysfunction.
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Affiliation(s)
- Kristine Krajnak
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America.
| | - Hong Kan
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Kristen A Russ
- 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
| | - Stacey Waugh
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States of America
| | - Wen Zheng
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, 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
| | - Claud Johnson
- 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
| | - 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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An L012@PAni-PAAm hydrogel composite based-electrochemiluminescence biosensor for in situ detection of H2O2 released from cardiomyocytes. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136763] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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12
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Vimercati L, Cavone D, Caputi A, De Maria L, Tria M, Prato E, Ferri GM. Nanoparticles: An Experimental Study of Zinc Nanoparticles Toxicity on Marine Crustaceans. General Overview on the Health Implications in Humans. Front Public Health 2020; 8:192. [PMID: 32509719 PMCID: PMC7253631 DOI: 10.3389/fpubh.2020.00192] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 04/27/2020] [Indexed: 01/05/2023] Open
Abstract
The presence of products containing nanoparticles or nanofibers is rapidly growing. Nanotechnology involves a wide spectrum of industrial fields. There is a lack of information regarding the toxicity of these nanoparticles in aqueous media. The potential acute toxicity of ZnO NPs using two marine crustacean species: the copepod Tigriopus fulvus and the amphypod Corophium insidiosum was evaluated. Acute tests were conducted on adults of T. Fulvus nauplii and C. insidiosum. Both test species were exposed for 96 h to 5 increasing concentrations of ZnO NPs and ZnSO4H2O, and the endpoint was mortality. Statistical analysis revealed that the mean LC50 values of both ZnO NPs and ZnSO4H2O (ZnO NPs: F = 59.42; P < 0.0015; ZnSO4H2O: F = 25.57; P < 0.0015) were significantly lower for Tigriopus fulvus than for Corophium insidiosum. This result confirms that the toxic effect could be mainly attributed to the Zn ions, confirming that the dissolution processes play a crucial role in the toxicity of the ZnO NPs.
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Affiliation(s)
- Luigi Vimercati
- Unit of Occupational Medicine, Interdisciplinary Department of Medicine (DIM), School of Medicine, University Hospital “Policlinico”, University of Bari “A. Moro”, Bari, Italy
| | - Domenica Cavone
- Unit of Occupational Medicine, Interdisciplinary Department of Medicine (DIM), School of Medicine, University Hospital “Policlinico”, University of Bari “A. Moro”, Bari, Italy
| | - Antonio Caputi
- Unit of Occupational Medicine, Interdisciplinary Department of Medicine (DIM), School of Medicine, University Hospital “Policlinico”, University of Bari “A. Moro”, Bari, Italy
| | - Luigi De Maria
- Unit of Occupational Medicine, Interdisciplinary Department of Medicine (DIM), School of Medicine, University Hospital “Policlinico”, University of Bari “A. Moro”, Bari, Italy
| | - Michele Tria
- Marine Environment and Pollution Prevention, Department of Prevention, ASL TA Health Company, Taranto, Italy
| | - Ermelinda Prato
- Institute for the Coastal Marine Environment of the Italian National Research Council (IAMC-CNR), Taranto, Italy
| | - Giovanni Maria Ferri
- Unit of Occupational Medicine, Interdisciplinary Department of Medicine (DIM), School of Medicine, University Hospital “Policlinico”, University of Bari “A. Moro”, Bari, Italy
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The Relationship between Exposure to Lead-Containing Welding Fumes and the Levels of Reproductive Hormones. Ann Glob Health 2019; 85:125. [PMID: 31673512 PMCID: PMC6798783 DOI: 10.5334/aogh.2617] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background Inhalation of lead oxide fumes may cause lead poisoning. Lead has been proven to have harmful effects on different organs. This study aimed to investigate the relationship between the concentration of lead fumes and the levels of reproductive hormones among exposed welders. Methods A total number of 165 individuals of a construction industry of water pipelines, including 85 welders as the exposure group and 80 administrative staff as the non-exposure group were selected for study. The National Institute for Occupational Safety and Health (NIOSH) 7300 method was used for the purpose of sampling and analysis of lead fumes. Likewise, the NIOSH 8003 method was employed to determine the blood lead level. The level of luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone were measured by Chemiluminescence immunoassay(CLIA) test. Data analyses were done by SPSS ver.21 using descriptive statistics, Student›s t-test and Spearman›s correlation test. Results The average concentration of lead fumes in the breathing zone and blood were 0.57 ± 0.12 mg/m3 and 460.28 ± 93.65 μg/L, correspondingly, which both were significantly higher than threshold limit values (TLV) and biological exposure index (BEI) recommended by American Conference of Governmental Industrial Hygienists (ACGIH)(P < 0.05). The mean levels of LH and FSH were higher in the exposed group than those in the control group (P < 0.05), however, the mean levels of testosterone were lower in the exposed group compared to non-exposed ones (P < 0.05). A strong correlation was found between the concentration of lead fumes and the blood lead levels (r = 0.82; P = 0.003). Blood lead levels were inversely related to the testosterone levels and directly related to LH (r = 0.72; P = 0.004) and FSH (r = 0.78; P = 0.001) levels. Conclusions Occupational exposure to metal fumes containing lead among welders may alter the level of sexual hormones and potentially harm the reproductive system.
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Han B, Chu C, Su X, Zhang N, Zhou L, Zhang M, Yang S, Shi L, Zhao B, Niu Y, Zhang R. N 6-methyladenosine-dependent primary microRNA-126 processing activated PI3K-AKT-mTOR pathway drove the development of pulmonary fibrosis induced by nanoscale carbon black particles in rats. Nanotoxicology 2019; 14:1-20. [PMID: 31502903 DOI: 10.1080/17435390.2019.1661041] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The pulmonary fibrosis could be caused by long-term inhalation of carbon black (CB) particles. Studies on the mechanisms of pulmonary fibrosis induced by CB are required to develop the stratagem of prevention and treatment on fibrosis. The RNA-binding protein DiGeorge syndrome critical region gene 8 (DGCR8)-dependent pri-miRNAs processing is regulated by N6-methyladenosine (m6A) modification, which targets the downstream signal pathway. However, its role in pulmonary fibrosis has not been known clearly. In the present study, rats inhaled CB at dose of 0, 5 or 30 mg/m3 for 28 days, 6 h/day, respectively. The rats inhaled CB at dose of 0 or 30 mg/m3 for 14 days, 28 days and 90 days, respectively. In vitro experiments, the normal human bronchial epithelial cell line (16HBE) was treated with CB (0, 50, 100 and 200 μg/mL) for 24 h. In vitro and vivo study, the levels of fibrosis indicators including α-SMA, vimentin, collagen-I and hydroxyproline in CB treatment groups statistically increased in dose- or time- dependent manners compared with the control. After CB treatment, PI3K-AKT-mTOR pathway was activated and regulated by miRNA-126. We found that both of m6A modifications of pri-miRNA-126 and its binding with DGCR8 were decreased after CB treatment, which resulted in the reduction of mature miRNA-126 accompanied by accumulation of unprocessed pri-miRNA-126. This work demonstrated that m6A modification of pri-miRNA-126 and its binding with DGCR8 decreases blocked miRNA-126 maturation, and then activated the PI3K/AKT/mTOR pathway, which drove the fibro genesis in the lung after CB exposure.
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Affiliation(s)
- Bin Han
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Chen Chu
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Xuan Su
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Ning Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Lixiao Zhou
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Mengyue Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Shuaishuai Yang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Lei Shi
- Occupational Health and Environmental Health, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Bo Zhao
- Department of Laboratory Diagnosis, Hebei Medical University, Shijiazhuang, China
| | - Yujie Niu
- Occupational Health and Environmental Health, School of Public Health, Hebei Medical University, Shijiazhuang, China.,Hebei Key Laboratory of Environment and Human Health, Hebei Medical University, Shijiazhuang, China
| | - Rong Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China.,Hebei Key Laboratory of Environment and Human Health, Hebei Medical University, Shijiazhuang, China
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Bai D, Li Q, Xiong Y, Zhao J, Bai L, Shen P, Yuan L, Wu P. Editor's Highlight: Effects of Intraperitoneal Injection of SnS2 Flowers on Mouse Testicle. Toxicol Sci 2019; 161:388-400. [PMID: 29069489 DOI: 10.1093/toxsci/kfx220] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
SnS2 nanoflowers (SnS2 NFs) have been widely used in photoelectric and catalytic applications. However, its explosure and reproductive toxicity is unknown. The aim of this study was to investigate the effect of exposure to 3 different sized-SnS2 flowers (dose: 38 mg/kg; size: 50, 80, and 200 nm) in testes of mice for 4 weeks by intraperitoneal injection. Though the body weight of mice treated or not with SnS2 NFs was not different, and SnS2 NFs were distributed to the organs including liver, kidney, spleen, heart, brain, and testis, more distribution SnS2 NFs (50 and 80 nm) were found in testicle tissues compared with SnS2 flowers (200 nm) in those tissues. The results of sperm count and survival analysis, histopathological evaluation, and qRT-PCR detection showed that there was moderate reproductive toxicity induced by the small-sized SnS2 NFs in testicle tissues. Furthermore, elevated malondialdehyde level and decreased superoxide dismutase activity were also observed in the SnS2 NFs (dose: 38 mg/kg; size: 50 and 80 nm) treated groups. Likewise, the qRT-PCR data indicated that SnS2 NFs can induce apoptosis and inflammation responses. Although the pro-inflammation marker of TNF-α, IL-1β, iNOS, and COX-2 at the mRNA levels were higher expression in 50 and 80 nm groups than that in control and 200 nm group, no statistical significance existed between 50 and 80 nm groups. Accordingly, the repeated-dose toxicity of SnS2 NFs in testicle tissues was also observed in a dose-dependent manner by intraperitoneal injection of SnS2 NFs (size: 50 nm; 0.38, 3.8, and 38 mg/kg) for 4 weeks, when determined by sperm count, survival rate, and qRT-PCR analysis. In addition, transmission electron microscopy showed that the ultrastructural abnormalities formed by the small-sized SnS2 NFs in testes were more severe than those formed by the large-sized SnS2 in testes. Taken together, these findings implied that the SnS2 NFs activated inflammation responses that signified apoptosis in murine testes. This study provided useful information for risk analysis and regulation of SnS2 NFs by administration agencies.
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Affiliation(s)
- Disi Bai
- Department of Applied Physics, Institute of Advanced Materials Physics, Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University, Tianjin 300072, People's Republic of China
| | - Qingzhao Li
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, People's Republic of China
| | - Yanjie Xiong
- Department of Pathology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, People's Republic of China
| | - Junjian Zhao
- Department of Pathology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, People's Republic of China
| | - Liyuan Bai
- Tangshan Environmental Monitoring Center of Heibei Province, Tangshan, Hebei 063000, People's Republic of China
| | - Peijun Shen
- Center of Environmental Monitoring of Tangshan, Tangshan, Hebei 063000, People's Republic of China
| | - Lu Yuan
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, People's Republic of China
| | - Ping Wu
- Department of Applied Physics, Institute of Advanced Materials Physics, Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University, Tianjin 300072, People's Republic of China
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Arms L, Smith DW, Flynn J, Palmer W, Martin A, Woldu A, Hua S. Advantages and Limitations of Current Techniques for Analyzing the Biodistribution of Nanoparticles. Front Pharmacol 2018; 9:802. [PMID: 30154715 PMCID: PMC6102329 DOI: 10.3389/fphar.2018.00802] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 07/03/2018] [Indexed: 12/22/2022] Open
Abstract
Nanomedicines are typically submicrometer-sized carrier materials (nanoparticles) encapsulating therapeutic and/or imaging compounds that are used for the prevention, diagnosis and treatment of diseases. They are increasingly being used to overcome biological barriers in the body to improve the way we deliver compounds to specific tissues and organs. Nanomedicine technology aims to improve the balance between the efficacy and the toxicity of therapeutic compounds. Nanoparticles, one of the key technologies of nanomedicine, can exhibit a combination of physical, chemical and biological characteristics that determine their in vivo behavior. A key component in the translational assessment of nanomedicines is determining the biodistribution of the nanoparticles following in vivo administration in animals and humans. There are a range of techniques available for evaluating nanoparticle biodistribution, including histology, electron microscopy, liquid scintillation counting (LSC), indirectly measuring drug concentrations, in vivo optical imaging, computed tomography (CT), magnetic resonance imaging (MRI), and nuclear medicine imaging. Each technique has its own advantages and limitations, as well as capabilities for assessing real-time, whole-organ and cellular accumulation. This review will address the principles and methodology of each technique and their advantages and limitations for evaluating in vivo biodistribution of nanoparticles.
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Affiliation(s)
- Lauren Arms
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - Doug W. Smith
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - Jamie Flynn
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - William Palmer
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia
| | - Antony Martin
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia
| | - Ameha Woldu
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Susan Hua
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
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Liu Y, Liu J, Zhang J, Li X, Lin F, Zhou N, Yang B, Lu L. Noninvasive Brain Tumor Imaging Using Red Emissive Carbonized Polymer Dots across the Blood-Brain Barrier. ACS OMEGA 2018; 3:7888-7896. [PMID: 30087926 PMCID: PMC6072250 DOI: 10.1021/acsomega.8b01169] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 06/11/2018] [Indexed: 05/23/2023]
Abstract
Surgical resection is recognized as a mainstay in the therapy of malignant brain tumors. In clinical practice, however, surgeons face great challenges in identifying the tumor boundaries due to the infiltrating and heterogeneous nature of neoplastic tissues. Contrast-enhanced magnetic resonance imaging (MRI) is extensively used for defining the brain tumor in clinic. Disappointingly, the commercially available (MR) contrast agents show the transient circulation lifetime and poor blood-brain barrier (BBB) permeability, which seriously hamper their abilities in tumor visualization. In this work, red fluorescent carbonized polymer dots (CPDs) were systematically investigated with respect to their BBB-penetration ability. In summary, CPDs possess long excitation/emission wavelengths, low toxicity, high photostability, and excellent biocompatibility. CPDs exhibit high internalization in glioma cells in time- and dose-dependent procedures, and internalized CPDs locate mainly in endolysosomal structures. In vitro and in vivo studies confirmed the BBB permeability of CPDs, contributing to the early stage diagnosis of brain disorders and the noninvasive visualization of the brain tumor without compromised BBB. Furthermore, owing to the high tumor to normal tissue ratio of CPDs under ex vivo conditions, our nanoprobe holds the promise to guide brain-tumor resection by real-time fluorescence imaging during surgery.
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Affiliation(s)
- Yang Liu
- Department of Hand
Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Junjun Liu
- State Key
Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Jiayi Zhang
- Department of Hand
Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Xiucun Li
- Department of Hand
Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Fangsiyu Lin
- Department of Hand
Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Nan Zhou
- Department of Orthopedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Bai Yang
- State Key
Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Laijin Lu
- Department of Hand
Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
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Avila-Alejo JO, González-Palomo AK, Plascencia-Villa G, José-Yacamán M, Navarro-Contreras HR, Pérez-Maldonado IN. Low cytotoxicity of anisotropic gold nanoparticles coated with lysine on peripheral blood mononuclear cells "in vitro". ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 56:210-218. [PMID: 28965035 DOI: 10.1016/j.etap.2017.09.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 09/20/2017] [Indexed: 06/07/2023]
Abstract
The aim of this study was to evaluate the cytotoxic effects of anisotropic (non spherical morphologies) gold nanoparticles coated with the amino acid Lysine (Lys) on peripheral blood mononuclear cells (PBMC) "in vitro". Gold (Au) nanoparticles tested in this study were synthesized by a seed-mediated growth using Lys as a structure and shape directing agent. Cytotoxic effects were evaluated by cell viability (resazurin assay), reactive oxygen species (ROS) induction (2',7'-dichlorofluorescein diacetate assay), DNA damage (comet assay) and apoptosis/necrosis (AnnexinV/propidium iodide assay) after PBMC were exposed to increasing concentrations (10, 25, 50, 100, and 250μM) of AuNPs coated with Lys (AuNPs-Lys) at different exposure times (3, 6, 12, and 24h). The results demonstrated that AuNPs-Lys exhibited low cytotoxicity towards PBMC, (high cell viability), with low levels of ROS, DNA damage and apoptosis/necrosis detected after treatment. These data suggest that AuNPs-Lys, might be viable for biomedical application subject to further investigations.
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Affiliation(s)
- Jorge O Avila-Alejo
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universi dad Autónoma de San Luis Potosí. San Luis Potosí, México, México; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - Ana K González-Palomo
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universi dad Autónoma de San Luis Potosí. San Luis Potosí, México, México; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - Germán Plascencia-Villa
- Departamento de Microscopia de Alta Resolución. Facultad de Ciencias. Universidad Autónoma de San Luis Potosí, San Luis Potosí, México; Department of Physics and Astronomy, The University of Texas at San Antonio (UTSA), San Antonio, TX, USA
| | - Miguel José-Yacamán
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universi dad Autónoma de San Luis Potosí. San Luis Potosí, México, México; Department of Physics and Astronomy, The University of Texas at San Antonio (UTSA), San Antonio, TX, USA
| | - Hugo R Navarro-Contreras
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universi dad Autónoma de San Luis Potosí. San Luis Potosí, México, México
| | - Iván N Pérez-Maldonado
- Laboratorio de Toxicología Molecular, Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universi dad Autónoma de San Luis Potosí. San Luis Potosí, México, México; Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México; Unidad Académica Multidisciplinaria Zona Media, Universidad Autónoma de San Luis Potosí. Rio-verde, San Luis Potosí, México.
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20
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Pöttler M, Fliedner A, Schreiber E, Janko C, Friedrich RP, Bohr C, Döllinger M, Alexiou C, Dürr S. Impact of Superparamagnetic Iron Oxide Nanoparticles on Vocal Fold Fibroblasts: Cell Behavior and Cellular Iron Kinetics. NANOSCALE RESEARCH LETTERS 2017; 12:284. [PMID: 28431461 PMCID: PMC5398974 DOI: 10.1186/s11671-017-2045-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 04/04/2017] [Indexed: 05/10/2023]
Abstract
PURPOSE The voice is the most important instrument of communication. Tissue defects in the vocal fold (VF) area lead to serious reduction in quality of life, but thus far, no satisfactory VF implant exists. Therefore, we aim to establish a functional VF implant in a rabbit model by magnetic tissue engineering (MTE) using superparamagnetic iron oxide nanoparticles (SPION). Hence, iron quantification over time as well as cell behavior studies upon SPION treatment are of great importance. METHODS Rabbit VF fibroblasts (VFF) were treated with different concentrations of SPIONs (20, 40, and 80 μg/cm2), and iron content was examined for up to 40 days using microwave plasma-atom emission spectroscopy. The effects of SPION treatment on VFF (adhesion, spreading, and migration), which are important for the formation of 3D structures, were tested. RESULTS Cellular SPION quantification revealed that there was no residual iron remaining in VFFs after 40 days. SPIONs had a dose-dependent effect on cell adhesion, with good tolerability observed up to 20 μg/cm2. Migration and spreading were not significantly influenced by SPION treatment up to 80 μg/cm2. DISCUSSION AND CONCLUSION To develop 3D structures, cell behavior should not be affected by SPION uptake. After 40 days, cells were free of iron as a result of metabolism or rarefication during cell division. Cell functions including adhesion, spreading, and migration were proven to be intact in a dose-dependent manner after SPION treatment, suggesting a safe usage of MTE for voice rehabilitation. Our results thus constitute a solid basis for a successful transfer of this technique into 3D constructs, in order to provide an individual and personalized human VF implant in the future.
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Affiliation(s)
- Marina Pöttler
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine, Else Kröner Fresenius Stiftung-Professorship, University Hospital Erlangen, Erlangen, Germany
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), University Hospital Erlangen, Glückstraße 10a, 91054 Erlangen, Germany
| | - Anna Fliedner
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine, Else Kröner Fresenius Stiftung-Professorship, University Hospital Erlangen, Erlangen, Germany
| | - Eveline Schreiber
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine, Else Kröner Fresenius Stiftung-Professorship, University Hospital Erlangen, Erlangen, Germany
| | - Christina Janko
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine, Else Kröner Fresenius Stiftung-Professorship, University Hospital Erlangen, Erlangen, Germany
| | - Ralf Philipp Friedrich
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine, Else Kröner Fresenius Stiftung-Professorship, University Hospital Erlangen, Erlangen, Germany
| | - Christopher Bohr
- Department of Otorhinolaryngology, Head and Neck Surgery, Division of Phoniatrics and Pediatric Audiology, University Hospital Erlangen, Erlangen, Germany
| | - Michael Döllinger
- Department of Otorhinolaryngology, Head and Neck Surgery, Division of Phoniatrics and Pediatric Audiology, University Hospital Erlangen, Erlangen, Germany
| | - Christoph Alexiou
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine, Else Kröner Fresenius Stiftung-Professorship, University Hospital Erlangen, Erlangen, Germany
| | - Stephan Dürr
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine, Else Kröner Fresenius Stiftung-Professorship, University Hospital Erlangen, Erlangen, Germany
- Department of Otorhinolaryngology, Head and Neck Surgery, Division of Phoniatrics and Pediatric Audiology, University Hospital Erlangen, Erlangen, Germany
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Boccuni F, Gagliardi D, Ferrante R, Rondinone BM, Iavicoli S. Measurement techniques of exposure to nanomaterials in the workplace for low- and medium-income countries: A systematic review. Int J Hyg Environ Health 2017; 220:1089-1097. [PMID: 28711303 DOI: 10.1016/j.ijheh.2017.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 05/17/2017] [Accepted: 06/14/2017] [Indexed: 10/19/2022]
Abstract
Nanotechnology offers many opportunities but there is still considerable uncertainty about the health risks and how to assess these.In the field of risk analysis for workers potentially exposed to nano-objects and their agglomerates and aggregates (NOAA) different methodological approaches to measure airborne NOAA have been proposed.This study proposes a systematic review of scientific literature on occupational exposure to NOAA in the workplace with the aim to identify techniques of exposure measurement to be recommended in low- and medium-income countries.We gathered scientific papers reporting techniques of NOAA exposure measurements in the workplace, we summarized the data for each eligible technique according to PRISMA guidelines, and we rated the quality of evidence following an adapted GRADE approach.We found 69 eligible studies to be included in qualitative synthesis: the majority of studies reported a moderate quality and only two studies demonstrated the use of a high quality exposure measurement technique.The review demonstrates that a basic exposure measurement, i.e. evidence for the presence or absence of NOAA in the workplace air, can be achieved with moderate (40 techniques) to high (2 techniques) quality; comprehensive exposure measurement, that allow the quantification of NOAA in the workplace, can be achieved with moderate (11 techniques) to high (2 techniques) quality.The findings of the study also allowed to finalize a list of requirements that must be fulfilled by an effective measurement technique (either basic or comprehensive) and to highlight the main weaknesses that need to be tackled for an effective affordability evaluation of measurement techniques to be recommended in low- and medium-income countries.
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Affiliation(s)
- Fabio Boccuni
- INAIL - Italian Workers' Compensation Authority - Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Via Fontana Candida 1, I-00078 Monte Porzio Catone, Rome, Italy.
| | - Diana Gagliardi
- INAIL - Italian Workers' Compensation Authority - Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Via Fontana Candida 1, I-00078 Monte Porzio Catone, Rome, Italy
| | - Riccardo Ferrante
- INAIL - Italian Workers' Compensation Authority - Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Via Fontana Candida 1, I-00078 Monte Porzio Catone, Rome, Italy
| | - Bruna Maria Rondinone
- INAIL - Italian Workers' Compensation Authority - Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Via Fontana Candida 1, I-00078 Monte Porzio Catone, Rome, Italy
| | - Sergio Iavicoli
- INAIL - Italian Workers' Compensation Authority - Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Via Fontana Candida 1, I-00078 Monte Porzio Catone, Rome, Italy
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Krajnak K, Sriram K, Johnson C, Roberts JR, Mercer R, Miller GR, Wirth O, Antonini JM. Effects of pulmonary exposure to chemically-distinct welding fumes on neuroendocrine markers of toxicity. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2017; 80:301-314. [PMID: 28598268 PMCID: PMC6422021 DOI: 10.1080/15287394.2017.1318324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Exposure to welding fumes may result in disorders of the pulmonary, cardiovascular, and reproductive systems. Welders are also at a greater risk of developing symptoms similar to those seen in individuals with idiopathic Parkinson's disease. In welders, there are studies that suggest that alterations in circulating prolactin concentrations may be indicative of injury to the dopamine (DA) neurons in the substantia nigra. The goal of these studies was to use an established model of welding particulate exposure to mimic the effects of welding fume inhalation on reproductive functions. Since previous investigators suggested that changes in circulating prolactin may be an early marker of DA neuron injury, movement disorders, and reproductive dysfunction, prolactin, hypothalamic tyrosine hydroxylase (TH) levels (a marker of DA synthesis), and other measures of hypothalamic-pituitary-gonadal (HPG) function were measured after repetitive instillation of welding fume particulates generated by flux core arc-hard surfacing (FCA-HS), manual metal arc-hard surfacing (MMA-HS) or gas metal arc-mild steel (GMA-MS) welding, or manganese chloride (MnCl2). Exposure to welding fume particulate resulted in the accumulation of various metals in the pituitary and testes of rats, along with changes in hypothalamic TH and serum prolactin levels. Exposure to particulates with high concentrations of soluble manganese (Mn) appeared to exert the greatest influence on TH activity levels and serum prolactin concentrations. Thus, circulating prolactin levels may serve as a biomarker for welding fume/Mn-induced neurotoxicity. Other reproductive measures were collected, and these data were consistent with epidemiological findings that prolactin and testosterone may serve as biomarkers of welding particulate induced DA neuron and reproductive dysfunction.
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Affiliation(s)
- K. Krajnak
- Engineering Controls and Technology Branch, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - K. Sriram
- Toxicology and Molecular Biology Branch, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - C. Johnson
- Engineering Controls and Technology Branch, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - J. R. Roberts
- Exposure Assessment Branch, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - R. Mercer
- Physiology and Pathology Research Branch, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - G. R. Miller
- Engineering Controls and Technology Branch, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - O. Wirth
- Biostatistic and Epidemiology Branch, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - J. M. Antonini
- Physiology and Pathology Research Branch, National Institute for Occupational Safety and Health, Morgantown, WV, USA
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Sodano V, Gorgitano MT, Quaglietta M, Verneau F. Regulating food nanotechnologies in the European Union: Open issues and political challenges. Trends Food Sci Technol 2016. [DOI: 10.1016/j.tifs.2016.05.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Roberts JR, Mercer RR, Stefaniak AB, Seehra MS, Geddam UK, Chaudhuri IS, Kyrlidis A, Kodali VK, Sager T, Kenyon A, Bilgesu SA, Eye T, Scabilloni JF, Leonard SS, Fix NR, Schwegler-Berry D, Farris BY, Wolfarth MG, Porter DW, Castranova V, Erdely A. Evaluation of pulmonary and systemic toxicity following lung exposure to graphite nanoplates: a member of the graphene-based nanomaterial family. Part Fibre Toxicol 2016; 13:34. [PMID: 27328692 PMCID: PMC4915050 DOI: 10.1186/s12989-016-0145-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 06/14/2016] [Indexed: 11/25/2022] Open
Abstract
Background Graphene, a monolayer of carbon, is an engineered nanomaterial (ENM) with physical and chemical properties that may offer application advantages over other carbonaceous ENMs, such as carbon nanotubes (CNT). The goal of this study was to comparatively assess pulmonary and systemic toxicity of graphite nanoplates, a member of the graphene-based nanomaterial family, with respect to nanoplate size. Methods Three sizes of graphite nanoplates [20 μm lateral (Gr20), 5 μm lateral (Gr5), and <2 μm lateral (Gr1)] ranging from 8–25 nm in thickness were characterized for difference in surface area, structure,, zeta potential, and agglomeration in dispersion medium, the vehicle for in vivo studies. Mice were exposed by pharyngeal aspiration to these 3 sizes of graphite nanoplates at doses of 4 or 40 μg/mouse, or to carbon black (CB) as a carbonaceous control material. At 4 h, 1 day, 7 days, 1 month, and 2 months post-exposure, bronchoalveolar lavage was performed to collect fluid and cells for analysis of lung injury and inflammation. Particle clearance, histopathology and gene expression in lung tissue were evaluated. In addition, protein levels and gene expression were measured in blood, heart, aorta and liver to assess systemic responses. Results All Gr samples were found to be similarly composed of two graphite structures and agglomerated to varying degrees in DM in proportion to the lateral dimension. Surface area for Gr1 was approximately 7-fold greater than Gr5 and Gr20, but was less reactive reactive per m2. At the low dose, none of the Gr materials induced toxicity. At the high dose, Gr20 and Gr5 exposure increased indices of lung inflammation and injury in lavage fluid and tissue gene expression to a greater degree and duration than Gr1 and CB. Gr5 and Gr20 showed no or minimal lung epithelial hypertrophy and hyperplasia, and no development of fibrosis by 2 months post-exposure. In addition, the aorta and liver inflammatory and acute phase genes were transiently elevated in Gr5 and Gr20, relative to Gr1. Conclusions Pulmonary and systemic toxicity of graphite nanoplates may be dependent on lateral size and/or surface reactivity, with the graphite nanoplates > 5 μm laterally inducing greater toxicity which peaked at the early time points post-exposure relative to the 1–2 μm graphite nanoplate. Electronic supplementary material The online version of this article (doi:10.1186/s12989-016-0145-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jenny R Roberts
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA.
| | - Robert R Mercer
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - Aleksandr B Stefaniak
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | | | - Usha K Geddam
- West Virginia University, Morgantown, WV, 26505, USA
| | | | | | - Vamsi K Kodali
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - Tina Sager
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - Allison Kenyon
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - Suzan A Bilgesu
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - Tracy Eye
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - James F Scabilloni
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - Stephen S Leonard
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - Natalie R Fix
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - Diane Schwegler-Berry
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | | | - Michael G Wolfarth
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | - Dale W Porter
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
| | | | - Aaron Erdely
- National Institute for Occupational Safety and Health, CDC/NIOSH/HELD, 1095 Willowdale Rd., MS4020, Morgantown, WV, 26505, USA
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Salamanca-Buentello F, Daar AS. Dust of Wonder, Dust of Doom: A Landscape of Nanotechnology, Nanoethics, and Sustainable Development. GLOBAL BIOETHICS: THE IMPACT OF THE UNESCO INTERNATIONAL BIOETHICS COMMITTEE 2016. [DOI: 10.1007/978-3-319-22650-7_10] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Bergamaschi E, Murphy F, Poland CA, Mullins M, Costa AL, McAlea E, Tran L, Tofail SAM. Impact and effectiveness of risk mitigation strategies on the insurability of nanomaterial production: evidences from industrial case studies. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2015; 7:839-55. [PMID: 25808636 PMCID: PMC6680359 DOI: 10.1002/wnan.1340] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 12/11/2014] [Accepted: 02/17/2015] [Indexed: 12/21/2022]
Abstract
Workers involved in producing nanomaterials or using nanomaterials in manufacturing plants are likely to have earlier and higher exposure to manufactured/engineered nanomaterials (ENM) than the general population. This is because both the volume handled and the probability of the effluence of 'free' nanoparticles from the handled volume are much higher during a production process than at any other stage in the lifecycle of nanomaterials and nanotechnology-enabled products. Risk assessment (RA) techniques using control banding (CB) as a framework for risk transfer represents a robust theory but further progress on implementing the model is required so that risk can be transferred to insurance companies. Following a review of RA in general and hazard measurement in particular, we subject a Structural Alert Scheme methodology to three industrial case studies using ZrO2 , TiO2 , and multi-walled carbon nanotubes (MWCNT). The materials are tested in a pristine state and in a remediated (coated) state, and the respective emission and hazard rates are tested alongside the material performance as originally designed. To our knowledge, this is the first such implementation of a CB RA in conjunction with an ENM performance test and offers both manufacturers and underwriters an insight into future applications.
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Affiliation(s)
- Enrico Bergamaschi
- Dipartimento di Medicina Clinica e Sperimentale, Università degli Studi di Parma, Parma, Italy
| | - Finbarr Murphy
- Kemmy Business School, University of Limerick, Limerick, Ireland
| | | | - Martin Mullins
- Kemmy Business School, University of Limerick, Limerick, Ireland
| | | | - Eamonn McAlea
- Kemmy Business School, University of Limerick, Limerick, Ireland
| | - Lang Tran
- Institute of Occupational Medicine, Edinburgh, UK
| | - Syed A M Tofail
- Materials and Surface Science Institute (MSSI), University of Limerick, Limerick, Ireland
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Palner M, Pu K, Shao S, Rao J. Semiconducting Polymer Nanoparticles with Persistent Near-Infrared Luminescence for In Vivo Optical Imaging. Angew Chem Int Ed Engl 2015. [PMID: 26223794 DOI: 10.1002/anie.201502736] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Materials with persistent luminescence are attractive for in vivo optical imaging since they have a long lifetime that allows the separation of excitation of fluorophores and image acquisition for time-delay imaging, thus eliminating tissue autofluorescence associated with fluorescence imaging. Persistently luminescent nanoparticles have previously been fabricated from toxic rare-earth metals. This work reports that nanoparticles made of the conjugated polymer MEH-PPV can generate luminescence persisting for an hour upon single excitation. A near-infrared dye was encapsulated in the conjugated polymer nanoparticle to successfully generate persistent near-infrared luminescence through resonance energy transfer. This new persistent luminescence nanoparticles have been demonstrated for optical imaging applications in living mice.
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Affiliation(s)
- Mikael Palner
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA 94395-5484 (USA) http://www.raolab.stanford.edu
| | - Kanyi Pu
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA 94395-5484 (USA) http://www.raolab.stanford.edu.,Current address: School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459 (Singapore)
| | - Shirley Shao
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA 94395-5484 (USA) http://www.raolab.stanford.edu
| | - Jianghong Rao
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA 94395-5484 (USA) http://www.raolab.stanford.edu.
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Palner M, Pu K, Shao S, Rao J. Semiconducting Polymer Nanoparticles with Persistent Near-Infrared Luminescence for In Vivo Optical Imaging. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502736] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Golbamaki N, Rasulev B, Cassano A, Marchese Robinson RL, Benfenati E, Leszczynski J, Cronin MTD. Genotoxicity of metal oxide nanomaterials: review of recent data and discussion of possible mechanisms. NANOSCALE 2015; 7:2154-98. [PMID: 25580680 DOI: 10.1039/c4nr06670g] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanotechnology has rapidly entered into human society, revolutionized many areas, including technology, medicine and cosmetics. This progress is due to the many valuable and unique properties that nanomaterials possess. In turn, these properties might become an issue of concern when considering potentially uncontrolled release to the environment. The rapid development of new nanomaterials thus raises questions about their impact on the environment and human health. This review focuses on the potential of nanomaterials to cause genotoxicity and summarizes recent genotoxicity studies on metal oxide/silica nanomaterials. Though the number of genotoxicity studies on metal oxide/silica nanomaterials is still limited, this endpoint has recently received more attention for nanomaterials, and the number of related publications has increased. An analysis of these peer reviewed publications over nearly two decades shows that the test most employed to evaluate the genotoxicity of these nanomaterials is the comet assay, followed by micronucleus, Ames and chromosome aberration tests. Based on the data studied, we concluded that in the majority of the publications analysed in this review, the metal oxide (or silica) nanoparticles of the same core chemical composition did not show different genotoxicity study calls (i.e. positive or negative) in the same test, although some results are inconsistent and need to be confirmed by additional experiments. Where the results are conflicting, it may be due to the following reasons: (1) variation in size of the nanoparticles; (2) variations in size distribution; (3) various purities of nanomaterials; (4) variation in surface areas for nanomaterials with the same average size; (5) differences in coatings; (6) differences in crystal structures of the same types of nanomaterials; (7) differences in size of aggregates in solution/media; (8) differences in assays; (9) different concentrations of nanomaterials in assay tests. Indeed, due to the observed inconsistencies in the recent literature and the lack of adherence to appropriate, standardized test methods, reliable genotoxicity assessment of nanomaterials is still challenging.
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Affiliation(s)
- Nazanin Golbamaki
- Laboratory of Environmental Chemistry and Toxicology at the Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy.
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Ostrowski A, Nordmeyer D, Boreham A, Holzhausen C, Mundhenk L, Graf C, Meinke MC, Vogt A, Hadam S, Lademann J, Rühl E, Alexiev U, Gruber AD. Overview about the localization of nanoparticles in tissue and cellular context by different imaging techniques. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:263-80. [PMID: 25671170 PMCID: PMC4311646 DOI: 10.3762/bjnano.6.25] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 12/12/2014] [Indexed: 05/21/2023]
Abstract
The increasing interest and recent developments in nanotechnology pose previously unparalleled challenges in understanding the effects of nanoparticles on living tissues. Despite significant progress in in vitro cell and tissue culture technologies, observations on particle distribution and tissue responses in whole organisms are still indispensable. In addition to a thorough understanding of complex tissue responses which is the domain of expert pathologists, the localization of particles at their sites of interaction with living structures is essential to complete the picture. In this review we will describe and compare different imaging techniques for localizing inorganic as well as organic nanoparticles in tissues, cells and subcellular compartments. The visualization techniques include well-established methods, such as standard light, fluorescence, transmission electron and scanning electron microscopy as well as more recent developments, such as light and electron microscopic autoradiography, fluorescence lifetime imaging, spectral imaging and linear unmixing, superresolution structured illumination, Raman microspectroscopy and X-ray microscopy. Importantly, all methodologies described allow for the simultaneous visualization of nanoparticles and evaluation of cell and tissue changes that are of prime interest for toxicopathologic studies. However, the different approaches vary in terms of applicability for specific particles, sensitivity, optical resolution, technical requirements and thus availability, and effects of labeling on particle properties. Specific bottle necks of each technology are discussed in detail. Interpretation of particle localization data from any of these techniques should therefore respect their specific merits and limitations as no single approach combines all desired properties.
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Affiliation(s)
- Anja Ostrowski
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, 14163 Berlin, Germany
| | - Daniel Nordmeyer
- Institute of Chemistry and Biochemistry - Physical and Theoretical Chemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Alexander Boreham
- Department of Physics, Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Cornelia Holzhausen
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, 14163 Berlin, Germany
| | - Lars Mundhenk
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, 14163 Berlin, Germany
| | - Christina Graf
- Institute of Chemistry and Biochemistry - Physical and Theoretical Chemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Martina C Meinke
- Department of Dermatology, Charite - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Annika Vogt
- Department of Dermatology, Charite - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Sabrina Hadam
- Department of Dermatology, Charite - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Jürgen Lademann
- Department of Dermatology, Charite - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Eckart Rühl
- Institute of Chemistry and Biochemistry - Physical and Theoretical Chemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Ulrike Alexiev
- Department of Physics, Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Achim D Gruber
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Str. 15, 14163 Berlin, Germany
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Abstract
Gene therapy attempts the insertion and expression of exogenous genetic material in cells for therapeutic purposes. Conceived in the 1960s, gene therapy reached its first clinical trial at the end of the 1980s and by December 2013 around 600 genuine open clinical trials of gene therapy were registered at NIH Clinical Trials Database. Here, we summarize the current efforts towards the development of gene therapy in Latin America. Our survey shows that the number of scientists involved in the development of gene therapy and DNA vaccines in Latin America is still very low. Higher levels of investment in this technology are necessary to boost the advancement of innovation and intellectual property in this field in a way that would ease both the social and financial burden of various medical conditions in Latin America.
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Affiliation(s)
- Rafael Linden
- Instituto de Biofísica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ursula Matte
- Centro de Terapia Gênica, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
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Shvedova AA, Yanamala N, Kisin ER, Tkach AV, Murray AR, Hubbs A, Chirila MM, Keohavong P, Sycheva LP, Kagan VE, Castranova V. Long-term effects of carbon containing engineered nanomaterials and asbestos in the lung: one year postexposure comparisons. Am J Physiol Lung Cell Mol Physiol 2013; 306:L170-82. [PMID: 24213921 DOI: 10.1152/ajplung.00167.2013] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The hallmark geometric feature of single-walled carbon nanotubes (SWCNT) and carbon nanofibers (CNF), high length to width ratio, makes them similar to a hazardous agent, asbestos. Very limited data are available concerning long-term effects of pulmonary exposure to SWCNT or CNF. Here, we compared inflammatory, fibrogenic, and genotoxic effects of CNF, SWCNT, or asbestos in mice 1 yr after pharyngeal aspiration. In addition, we compared pulmonary responses to SWCNT by bolus dosing through pharyngeal aspiration and inhalation 5 h/day for 4 days, to evaluate the effect of dose rate. The aspiration studies showed that these particles can be visualized in the lung at 1 yr postexposure, whereas some translocate to lymphatics. All these particles induced chronic bronchopneumonia and lymphadenitis, accompanied by pulmonary fibrosis. CNF and asbestos were found to promote the greatest degree of inflammation, followed by SWCNT, whereas SWCNT were the most fibrogenic of these three particles. Furthermore, SWCNT induced cytogenetic alterations seen as micronuclei formation and nuclear protrusions in vivo. Importantly, inhalation exposure to SWCNT showed significantly greater inflammatory, fibrotic, and genotoxic effects than bolus pharyngeal aspiration. Finally, SWCNT and CNF, but not asbestos exposures, increased the incidence of K-ras oncogene mutations in the lung. No increased lung tumor incidence occurred after 1 yr postexposure to SWCNT, CNF, and asbestos. Overall, our data suggest that long-term pulmonary toxicity of SWCNT, CNF, and asbestos is defined, not only by their chemical composition, but also by the specific surface area and type of exposure.
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Mercer RR, Scabilloni JF, Hubbs AF, Wang L, Battelli LA, McKinney W, Castranova V, Porter DW. Extrapulmonary transport of MWCNT following inhalation exposure. Part Fibre Toxicol 2013; 10:38. [PMID: 23927530 PMCID: PMC3750633 DOI: 10.1186/1743-8977-10-38] [Citation(s) in RCA: 138] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Accepted: 08/06/2013] [Indexed: 11/22/2022] Open
Abstract
Background Inhalation exposure studies of mice were conducted to determine if multi-walled carbon nanotubes (MWCNT) distribute to the tracheobronchial lymphatics, parietal pleura, respiratory musculature and/or extrapulmonary organs. Male C57BL/6 J mice were exposed in a whole-body inhalation system to a 5 mg/m3 MWCNT aerosol for 5 hours/day for 12 days (4 times/week for 3 weeks, lung burden 28.1 ug/lung). At 1 day and 336 days after the 12 day exposure period, mice were anesthetized and lungs, lymph nodes and extrapulmonary tissues were preserved by whole body vascular perfusion of paraformaldehyde while the lungs were inflated with air. Separate, clean-air control groups were studied at 1 day and 336 days post-exposure. Sirius Red stained sections from lung, tracheobronchial lymph nodes, diaphragm, chest wall, heart, brain, kidney and liver were analyzed. Enhanced darkfield microscopy and morphometric methods were used to detect and count MWCNT in tissue sections. Counts in tissue sections were expressed as number of MWCNT per g of tissue and as a percentage of total lung burden (Mean ± S.E., N = 8 mice per group). MWCNT burden in tracheobronchial lymph nodes was determined separately based on the volume density in the lymph nodes relative to the volume density in the lungs. Field emission scanning electron microscopy (FESEM) was used to examine MWCNT structure in the various tissues. Results Tracheobronchial lymph nodes were found to contain 1.08 and 7.34 percent of the lung burden at 1 day and 336 days post-exposure, respectively. Although agglomerates account for approximately 54% of lung burden, only singlet MWCNT were observed in the diaphragm, chest wall, liver, kidney, heart and brain. At one day post exposure, the average length of singlet MWCNT in liver and kidney, was comparable to that of singlet MWCNT in the lungs 8.2 ± 0.3 versus 7.5 ± 0.4 um, respectively. On average, there were 15,371 and 109,885 fibers per gram in liver, kidney, heart and brain at 1 day and 336 days post-exposure, respectively. The burden of singlet MWCNT in the lymph nodes, diaphragm, chest wall and extrapulmonary organs at 336 days post-exposure was significantly higher than at 1 day post-exposure. Conclusions Inhaled MWCNT, which deposit in the lungs, are transported to the parietal pleura, the respiratory musculature, liver, kidney, heart and brain in a singlet form and accumulate with time following exposure. The tracheobronchial lymph nodes contain high levels of MWCNT following exposure and further accumulate over nearly a year to levels that are a significant fraction of the lung burden 1 day post-exposure.
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