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Lee ES, Sahay K, O'Neil E, Biswas S, Dzhema I, Huang SM, Lin P, Chang MCO, Huai T. Tracer-Gas-Integrated Measurements of Brake-Wear Particulate Matter Emissions from Heavy-Duty Vehicles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:15968-15978. [PMID: 37782561 DOI: 10.1021/acs.est.3c03673] [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: 10/04/2023]
Abstract
Automotive brake-wear emissions are increasingly important in on-road particulate matter (PM) emission inventory. Previous studies reported a high level of PM emissions from the friction materials of light/medium-duty vehicles, but there are few data available from heavy-duty (HD) vehicles equipped with drum brakes despite their popularity (∼85% in HD vehicle fleet). This study developed a novel tracer-gas-integrated method for brake-wear PM emission measurements and evaluated four HD vehicles on a chassis dynamometer that complied with regulatory exhaust emission testing requirements. Three class-6 vehicles with a similar test weight demonstrated repeatability, with the coefficient of variation in the range of 9-36%. Braking events increased PM concentrations by 3 orders of magnitude above the background level. Resuspension of brake-wear PM also occurred during acceleration and contributed to 8-31% of the total PM2.5 mass. The class-6 vehicles had PM2.5 emissions from a single brake (0.7-1.5 mg/km/brake), generally similar to the level of tail-pipe exhaust PM emissions (0.7-1.5 mg/km/vehicle) of each vehicle. A class-8 vehicle exhibited brake-wear PM2.5 emissions (2.4-3.4 mg/km/brake) significantly higher than the tail-pipe exhaust PM emissions (∼1.3 mg/km/vehicle). This article reports an exceptionally high level of brake-wear PM emissions measured directly from the drum brakes of HD vehicles.
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Affiliation(s)
- Eon S Lee
- Mobile Source Laboratory Division, California Air Resources Board, 4001 Iowa Avenue, Riverside, California 92507, United States
| | - Keshav Sahay
- Mobile Source Laboratory Division, California Air Resources Board, 4001 Iowa Avenue, Riverside, California 92507, United States
| | - Edward O'Neil
- Mobile Source Laboratory Division, California Air Resources Board, 4001 Iowa Avenue, Riverside, California 92507, United States
| | - Subhasis Biswas
- Mobile Source Laboratory Division, California Air Resources Board, 4001 Iowa Avenue, Riverside, California 92507, United States
| | - Inna Dzhema
- Mobile Source Laboratory Division, California Air Resources Board, 4001 Iowa Avenue, Riverside, California 92507, United States
| | - Shiou-Mei Huang
- Mobile Source Laboratory Division, California Air Resources Board, 4001 Iowa Avenue, Riverside, California 92507, United States
| | - Peng Lin
- Mobile Source Laboratory Division, California Air Resources Board, 4001 Iowa Avenue, Riverside, California 92507, United States
| | - Ming-Chih Oliver Chang
- Mobile Source Laboratory Division, California Air Resources Board, 4001 Iowa Avenue, Riverside, California 92507, United States
| | - Tao Huai
- Mobile Source Laboratory Division, California Air Resources Board, 4001 Iowa Avenue, Riverside, California 92507, United States
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2
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Kodavanti UP, Jackson TW, Henriquez AR, Snow SJ, Alewel DI, Costa DL. Air Pollutant impacts on the brain and neuroendocrine system with implications for peripheral organs: a perspective. Inhal Toxicol 2023; 35:109-126. [PMID: 36749208 DOI: 10.1080/08958378.2023.2172486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Air pollutants are being increasingly linked to extrapulmonary multi-organ effects. Specifically, recent studies associate air pollutants with brain disorders including psychiatric conditions, neuroinflammation and chronic diseases. Current evidence of the linkages between neuropsychiatric conditions and chronic peripheral immune and metabolic diseases provides insights on the potential role of the neuroendocrine system in mediating neural and systemic effects of inhaled pollutants (reactive particulates and gases). Autonomically-driven stress responses, involving sympathetic-adrenal-medullary and hypothalamus-pituitary-adrenal axes regulate cellular physiological processes through adrenal-derived hormones and diverse receptor systems. Recent experimental evidence demonstrates the contribution of the very stress system responding to non-chemical stressors, in mediating systemic and neural effects of reactive air pollutants. The assessment of how respiratory encounter of air pollutants induce lung and peripheral responses through brain and neuroendocrine system, and how the impairment of these stress pathways could be linked to chronic diseases will improve understanding of the causes of individual variations in susceptibility and the contribution of habituation/learning and resiliency. This review highlights effects of air pollution in the respiratory tract that impact the brain and neuroendocrine system, including the role of autonomic sensory nervous system in triggering neural stress response, the likely contribution of translocated nano particles or metal components, and biological mediators released systemically in causing effects remote to the respiratory tract. The perspective on the use of systems approaches that incorporate multiple chemical and non-chemical stressors, including environmental, physiological and psychosocial, with the assessment of interactive neural mechanisms and peripheral networks are emphasized.
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Affiliation(s)
- Urmila P Kodavanti
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Thomas W Jackson
- Oak Ridge Institute for Science and Education Research Participation Program, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Andres R Henriquez
- Oak Ridge Institute for Science and Education Research Participation Program, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | | | - Devin I Alewel
- Oak Ridge Institute for Science and Education Research Participation Program, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Daniel L Costa
- Department of Environmental Sciences and Engineering, Gilling's School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
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3
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Dubey K, Maurya R, Mourya D, Pandey AK. Physicochemical characterization and oxidative potential of size fractionated Particulate Matter: Uptake, genotoxicity and mutagenicity in V-79 cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 247:114205. [PMID: 36306616 DOI: 10.1016/j.ecoenv.2022.114205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 10/12/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
For many years, the impact of Particulate Matter (PM) in the ambient air has been one of the major concerns for the environment and human health. The consideration of the heterogeneity and complexity of different size fractions is notably important for the assessment of PM toxicological effects. The aim of the study was to present a comprehensive size-composition-morphology characterization and to assess the oxidative potential, genotoxicity, and mutagenicity of the atmospheric PM fractions, collected by using MOUDI near a busy roadside in Lucknow, India. Physicochemical characterization of ambient coarse particles (1.8-10 µm), fine particles (0.32-1.8 µm), quasi-ultrafine (0.1-0.32 µm) and ultrafine particles (≤0.1 µm) along with SRM 1649b was done using TEM, SEM, DLS, NTA, ICP-MS, and IC in parallel with the estimation of exogenous Reactive Oxygen Species (ROS) by acellular assays. In this study, two different acellular assays, dithiothreitol (DTT) and the CM-H2DCFDA assay, indicated stronger mass-normalized bioactivity for different size ranges. Enrichment factor analysis indicated that the different size fractions were highly enriched with elements of anthropogenic origin as compared to elements of crustal origin. The endotoxin concentration in different size fractions was also estimated. Cellular studies demonstrated significant uptake, cytotoxicity, ultrastructural changes, cellular ROS generation, and changes in the different phases of the cell cycle (Sub G1, G1, S, G2/M) exposed to different size fractions. The Comet assay and the Micronucleus assay were used to estimate genotoxicity. Mutagenic potential was revealed by the HGPRT gene forward mutation assay in V-97 cells. Conclusively, our results clearly indicate that the genotoxic and mutagenic potential of the coarse PM was greater than the other fractions, and interestingly, the ultrafine PM has higher bioactivity as compared to quasi-ultrafine PM.
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Affiliation(s)
- Kavita Dubey
- CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Renuka Maurya
- CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Durgesh Mourya
- CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Alok Kumar Pandey
- CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India.
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4
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Grytting VS, Refsnes M, Låg M, Erichsen E, Røhr TS, Snilsberg B, White RA, Øvrevik J. The importance of mineralogical composition for the cytotoxic and pro-inflammatory effects of mineral dust. Part Fibre Toxicol 2022; 19:46. [PMID: 35794670 PMCID: PMC9261052 DOI: 10.1186/s12989-022-00486-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/21/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Respirable mineral particles represent a potential health hazard in occupational settings and ambient air. Previous studies show that mineral particles may induce cytotoxicity and inflammatory reactions in vitro and in vivo and that the potency varies between samples of different composition. However, the reason for these differences is largely unknown and the impact of mineralogical composition on the biological effects of mineral dust remains to be determined.
Methods
We have assessed the cytotoxic and pro-inflammatory effects of ten mineral particle samples of different composition in human bronchial epithelial cells (HBEC3-KT) and THP-1-derived macrophages, as well as their membranolytic properties in erythrocytes. Moreover, the results were compiled with the results of recently published experiments on the effects of stone particle exposure and analysed using linear regression models to elucidate which mineral components contribute most to the toxicity of mineral dust.
Results
While all mineral particle samples were more cytotoxic to HBEC3-KT cells than THP-1 macrophages, biotite and quartz were among the most cytotoxic in both cell models. In HBEC3-KT cells, biotite and quartz also appeared to be the most potent inducers of pro-inflammatory cytokines, while the quartz, Ca-feldspar, Na-feldspar and biotite samples were the most potent in THP-1 macrophages. All particle samples except quartz induced low levels of membranolysis. The regression analyses revealed associations between particle bioactivity and the content of quartz, muscovite, plagioclase, biotite, anorthite, albite, microcline, calcite, chlorite, orthopyroxene, actinolite and epidote, depending on the cell model and endpoint. However, muscovite was the only mineral consistently associated with increased cytotoxicity and cytokine release in both cell models.
Conclusions
The present study provides further evidence that mineral particles may induce cytotoxicity and inflammation in cells of the human airways and that particle samples of different mineralogical composition differ in potency. The results show that quartz, while being among the most potent samples, does not fully predict the toxicity of mineral dust, highlighting the importance of other particle constituents. Moreover, the results indicate that the phyllosilicates muscovite and biotite may be more potent than other minerals assessed in the study, suggesting that this group of sheet-like minerals may warrant further attention.
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Oroumiyeh F, Jerrett M, Del Rosario I, Lipsitt J, Liu J, Paulson SE, Ritz B, Schauer JJ, Shafer MM, Shen J, Weichenthal S, Banerjee S, Zhu Y. Elemental composition of fine and coarse particles across the greater Los Angeles area: Spatial variation and contributing sources. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118356. [PMID: 34653582 DOI: 10.1016/j.envpol.2021.118356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/08/2021] [Accepted: 10/09/2021] [Indexed: 05/12/2023]
Abstract
The inorganic components of particulate matter (PM), especially transition metals, have been shown to contribute to PM toxicity. In this study, the spatial distribution of PM elements and their potential sources in the Greater Los Angeles area were studied. The mass concentration and detailed elemental composition of fine (PM2.5) and coarse (PM2.5-10) particles were assessed at 46 locations, including urban traffic, urban community, urban background, and desert locations. Crustal enrichment factors (EFs), roadside enrichments (REs), and bivariate correlation analysis revealed that Ba, Cr, Cu, Mo, Pd, Sb, Zn, and Zr were associated with traffic emissions in both PM2.5 and PM2.5-10, while Fe, Li, Mn, and Ti were affected by traffic emissions mostly in PM2.5. The concentrations of Ba, Cu, Mo, Sb, Zr (brake wear tracers), Pd (tailpipe tracer), and Zn (associated with tire wear) were higher at urban traffic sites than urban background locations by factors of 2.6-4.6. Both PM2.5 and PM2.5-10 elements showed large spatial variations, indicating the presence of diverse emission sources across sampling locations. Principal component analysis extracted four source factors that explained 88% of the variance in the PM2.5 elemental concentrations, and three sources that explained 86% of the variance in the PM2.5-10 elemental concentrations. Based on multiple linear regression analysis, the contribution of traffic emissions (27%) to PM2.5 was found to be higher than mineral dust (23%), marine aerosol (18%), and industrial emissions (8%). On the other hand, mineral dust was the dominant source of PM2.5-10 with 45% contribution, followed by marine aerosol (22%), and traffic emissions (19%). This study provides novel insight into the spatial variation of traffic-related elements in a large metropolitan area.
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Affiliation(s)
- Farzan Oroumiyeh
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Michael Jerrett
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Irish Del Rosario
- Department of Epidemiology, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Jonah Lipsitt
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Jonathan Liu
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Suzanne E Paulson
- Department of Atmospheric & Oceanic Sciences, University of California, Los Angeles, CA, 90095, USA
| | - Beate Ritz
- Department of Epidemiology, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - James J Schauer
- Wisconsin State Laboratory of Hygiene, School of Medicine & Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Martin M Shafer
- Wisconsin State Laboratory of Hygiene, School of Medicine & Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Jiaqi Shen
- Department of Atmospheric & Oceanic Sciences, University of California, Los Angeles, CA, 90095, USA
| | - Scott Weichenthal
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
| | - Sudipto Banerjee
- Department of Biostatistics, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Yifang Zhu
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
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6
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Tomašek I, Damby DE, Stewart C, Horwell CJ, Plumlee G, Ottley CJ, Delmelle P, Morman S, El Yazidi S, Claeys P, Kervyn M, Elskens M, Leermakers M. Development of a simulated lung fluid leaching method to assess the release of potentially toxic elements from volcanic ash. CHEMOSPHERE 2021; 278:130303. [PMID: 33819884 DOI: 10.1016/j.chemosphere.2021.130303] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 03/09/2021] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Freshly erupted volcanic ash contains a range of soluble elements, some of which can generate harmful effects in living cells and are considered potentially toxic elements (PTEs). This work investigates the leaching dynamics of ash-associated PTEs in order to optimize a method for volcanic ash respiratory hazard assessment. Using three pristine (unaffected by precipitation) ash samples, we quantify the release of PTEs (Al, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, V, Zn) and major cations typical of ash leachates (Mg, Na, Ca, K) in multiple simulated lung fluid (SLF) preparations and under varying experimental parameters (contact time and solid to liquid ratio). Data are compared to a standard water leach (WL) to ascertain whether the WL can be used as a simple proxy for SLF leaching. The main findings are: PTE concentrations reach steady-state dissolution by 24 h, and a relatively short contact time (10 min) approximates maximum dissolution; PTE dissolution is comparatively stable at low solid to liquid ratios (1:100 to 1:1000); inclusion of commonly used macromolecules has element-specific effects, and addition of a lung surfactant has little impact on extraction efficiency. These observations indicate that a WL can be used to approximate lung bioaccessible PTEs in an eruption response situation. This is a useful step towards standardizing in vitro methods to determine the soluble-element hazard from inhaled ash.
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Affiliation(s)
- Ines Tomašek
- Analytical, Environmental and Geochemistry (AMGC), Department of Chemistry, Vrije Universiteit Brussel, Brussels, Belgium; Physical Geography (FARD), Department of Geography, Vrije Universiteit Brussel, Brussels, Belgium.
| | - David E Damby
- U.S. Geological Survey, Volcano Science Center/California Volcano Observatory, Menlo Park, CA, USA
| | - Carol Stewart
- School of Health Sciences, Massey University, Wellington, New Zealand
| | - Claire J Horwell
- Institute of Hazard, Risk and Resilience, Department of Earth Sciences, Durham University, Durham, United Kingdom
| | | | | | - Pierre Delmelle
- Earth & Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Suzette Morman
- U.S. Geological Survey, Denver Federal Center, Denver, CO, USA
| | - Sofian El Yazidi
- Analytical, Environmental and Geochemistry (AMGC), Department of Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
| | - Philippe Claeys
- Analytical, Environmental and Geochemistry (AMGC), Department of Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
| | - Matthieu Kervyn
- Physical Geography (FARD), Department of Geography, Vrije Universiteit Brussel, Brussels, Belgium
| | - Marc Elskens
- Analytical, Environmental and Geochemistry (AMGC), Department of Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
| | - Martine Leermakers
- Analytical, Environmental and Geochemistry (AMGC), Department of Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
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7
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Hadrup N, Aimonen K, Ilves M, Lindberg H, Atluri R, Sahlgren NM, Jacobsen NR, Barfod KK, Berthing T, Lawlor A, Norppa H, Wolff H, Jensen KA, Hougaard KS, Alenius H, Catalan J, Vogel U. Pulmonary toxicity of synthetic amorphous silica - effects of porosity and copper oxide doping. Nanotoxicology 2020; 15:96-113. [PMID: 33176111 DOI: 10.1080/17435390.2020.1842932] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Materials can be modified for improved functionality. Our aim was to test whether pulmonary toxicity of silica nanomaterials is increased by the introduction of: a) porosity; and b) surface doping with CuO; and whether c) these modifications act synergistically. Mice were exposed by intratracheal instillation and for some doses also oropharyngeal aspiration to: 1) solid silica 100 nm; 2) porous silica 100 nm; 3) porous silica 100 nm with CuO doping; 4) solid silica 300 nm; 5) porous silica 300 nm; 6) solid silica 300 nm with CuO doping; 7) porous silica 300 nm with CuO doping; 8) CuO nanoparticles 9.8 nm; or 9) carbon black Printex 90 as benchmark. Based on a pilot study, dose levels were between 0.5 and 162 µg/mouse (0.2 and 8.1 mg/kg bw). Endpoints included pulmonary inflammation (neutrophil numbers in bronchoalveolar fluid), acute phase response, histopathology, and genotoxicity assessed by the comet assay, micronucleus test, and the gamma-H2AX assay. The porous silica materials induced greater pulmonary inflammation than their solid counterparts. A similar pattern was seen for acute phase response induction and histologic changes. This could be explained by a higher specific surface area per mass unit for the most toxic particles. CuO doping further increased the acute phase response normalized according to the deposited surface area. We identified no consistent evidence of synergism between surface area and CuO doping. In conclusion, porosity and CuO doping each increased the toxicity of silica nanomaterials and there was no indication of synergy when the modifications co-occurred.
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Affiliation(s)
- Niels Hadrup
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
| | - Kukka Aimonen
- Finnish Institute of Occupational Health (FIOH), Helsinki, Finland
| | - Marit Ilves
- Human Microbiome Research Program, University of Helsinki, Helsinki, Finland
| | - Hanna Lindberg
- Finnish Institute of Occupational Health (FIOH), Helsinki, Finland
| | - Rambabu Atluri
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
| | - Nicklas M Sahlgren
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
| | - Nicklas R Jacobsen
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
| | - Kenneth K Barfod
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark.,Department of Veterinary and Animal Sciences. Experimental Animal Models, University of Copenhagen, Denmark
| | - Trine Berthing
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
| | - Alan Lawlor
- CEH Lancaster, Lancaster Environment Centre, Lancaster, UK
| | - Hannu Norppa
- Finnish Institute of Occupational Health (FIOH), Helsinki, Finland
| | - Henrik Wolff
- Finnish Institute of Occupational Health (FIOH), Helsinki, Finland
| | - Keld A Jensen
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
| | - Karin S Hougaard
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark.,Institute of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Harri Alenius
- Human Microbiome Research Program, University of Helsinki, Helsinki, Finland.,Institute of environmental medicine (IMM), Karolinska Institutet, Stockholm, Sweden
| | - Julia Catalan
- Finnish Institute of Occupational Health (FIOH), Helsinki, Finland.,Department of Anatomy, Embryology and Genetics, University of Zaragoza, Zaragoza, Spain
| | - Ulla Vogel
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark.,DTU Health Tech, Technical University of Denmark, Kgs. Lyngby, Denmark
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8
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Leghari SK, Zaidi MA, Siddiqui MF, Sarangzai AM, Sheikh SUR. Dust exposure risk from stone crushing to workers and locally grown plant species in Quetta, Pakistan. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:740. [PMID: 31712911 DOI: 10.1007/s10661-019-7825-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/11/2019] [Indexed: 06/10/2023]
Abstract
The aim of this study was to assess the effects of stone crushing dust pollution on three commonly cultivated fruit plant species (Vitis vinifera L., Morus alba L., and Prunus armeniaca L.) and on the health of workers working at crushing plants. The trial was carried out on fruit plant species grown close to the stone crushing units located near the northwestern (Brewery) bypass of Quetta city, Pakistan, near National Highway NH-25. Plant materials were collected from three polluted sites at a distance of 500, 1000, and 1500 m, respectively, away from the stone crushing units and one locality of comparatively clean air considered a control at 4000 m away from these crushing components. To know the status of air disorder near the experimental sites, the suspended particulate matters and both oxides of sulfur and nitrogen were also noted during operating hours. Consequences of the study indicated that during the crushing process, a fine aerosol of stone dust is often generated which could cause a significant health hazard to workers and also affect plant productivity due to the smothering of plant stomata. Environmental data designated that the average highest evaluated total suspended particulate matter (TSPM), NOx, and SOx were 7400 μg/m3, 803.7 μg/m3, and 216 μg/m3, respectively, at 500-m distance which gradually decreases as the distance increases-all of these pose a health risk to operators. The maximum deposit dust washed from the plant leaf surface under study was found to be 8.2, 4.6, and 4.4 at the distance of 500 m in all the investigated plant species which was highly significantly higher than that of the control site (4000 m). Among the plant species, the maximum dust fall was noted on the leaves of Vitis vinifera L., and minimum was on the leaves of Prunus armeniaca. The locations affected by more stone dust pollution (500 m) were leading to a reduction in the yield and quality of fruits. The studied stone crushing units had high percentages of closed stomata both on the upper sides (Us) and lower sides (Ls) of leaves at 500-m distance from stone crushing installations. Data regarding workers' health indicated the maximum age distribution among the workers was between the age groups of 20-35 years (46.15%). Results also showed that stone crushing workers suffered from symptoms of respiratory diseases (82.17%), allergies (72.13%), headaches (75.09%), coughing (78.36%), and tiredness (92.31%).
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9
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Roy D, Singh G, Seo YC. Coal mine fire effects on carcinogenicity and non-carcinogenicity human health risks. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:113091. [PMID: 31473393 DOI: 10.1016/j.envpol.2019.113091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 08/20/2019] [Accepted: 08/20/2019] [Indexed: 06/10/2023]
Abstract
Atmospheric particulate matter (PM) pollution levels and human health risks resulting from exposure to non-anthropogenic pollution sources, such as coal mine-fires, are serious global issues. The toxicity of PM10-bound metals and polycyclic aromatic hydrocarbons (PAHs) was assessed according to their non-cancer and cancer risks (CRs) at the mine-fire and in an adjacent city area. Health risks were estimated for inhalation, ingestion, and dermal absorption pathways. The non-cancer risks, presented in terms of the hazard index (HI) and hazard quotient (HQ), were found to be significant (>1) at all locations, except in the mining (for HQ-dermal) and city background area (for HQ-ingestion and HQ-dermal) in children and adults, respectively. The total CR was estimated to be highest at the city nearby the mine-fire area (3.31E-02 and 1.93E-02) followed by the mine-fire area (2.66E-02 and 1.71E-02) for children and adults, respectively. The total CR and CR via individual exposure routes were estimated to be in the high risk (10-3 ≤ CR < 10-1) category at the mine-fire site and adjacent city area. For all exposures, CR levels were calculated to be higher than the acceptable range (from 1.00E-06 to 1.00E-04), except for the CR-inhalation level at the A5 location. Among all elements, Cd and BaPequ were more significant for the CR at the coal mine-fire and the adjacent city area. Hence, this study concluded that non-anthropogenic sources, such as coal mine-fires, could be part for the significant health risk (carcinogenic and non-carcinogenic) levels in the study area.
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Affiliation(s)
- Debananda Roy
- Department of Environmental Engineering, Yonsei University, Wonju, Republic of Korea; Department of Environmental Engineering, Marwadi Education Foundation's Group of Institutions, Rajkot, Gujarat, India
| | - Gurdeep Singh
- Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad, India
| | - Yong-Chil Seo
- Department of Environmental Engineering, Yonsei University, Wonju, Republic of Korea.
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10
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Aztatzi-Aguilar OG, Valdés-Arzate A, Debray-García Y, Calderón-Aranda ES, Uribe-Ramirez M, Acosta-Saavedra L, Gonsebatt ME, Maciel-Ruiz JA, Petrosyan P, Mugica-Alvarez V, Gutiérrez-Ruiz MC, Gómez-Quiroz LE, Osornio-Vargas A, Froines J, Kleinman MT, De Vizcaya-Ruiz A. Exposure to ambient particulate matter induces oxidative stress in lung and aorta in a size- and time-dependent manner in rats. TOXICOLOGY RESEARCH AND APPLICATION 2018. [DOI: 10.1177/2397847318794859] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Exposure to particulate matter (PM) has been implicated in oxidative stress (OxS) and inflammation as underlying mechanisms of lung damage and cardiovascular alterations. PM is a chemical mixture that can be subdivided according to their aerodynamic size into coarse (CP), fine (FP), and ultrafine (UFP) particulates. We investigated, in a rat model, the induction of OxS (protein oxidation and antioxidant response), carcinogen-DNA adduct formation, and inflammatory mediators in lung in response to different airborne particulate fractions, CP, FP, and UFP, after an acute and subchronic exposure. In addition, OxS was evaluated in the aorta to assess the effects beyond the lungs. Exposure to CP, FP, and UFP induced time- and size-dependent lung protein oxidation and DNA adduct formation. After acute and subchronic exposure, nuclear factor erythroid-2 (Nrf2) activation was observed in the lung, by electrophoretic mobility shift assay, and the induction of mRNA antioxidant enzymes in the FP and UFP groups, but not in the CP. Cytokine concentration of interleukin 1β, interleukin 6, and macrophage inflammatory protein-2 was significantly increased in bronchoalveolar lavage fluid after acute exposure to FP and UFP. Activation of Nrf2 and expression of mRNA antioxidant enzymes were observed only after the subchronic exposure to FP and UFP in the aorta. Our results indicate that FP and UFP were mainly accountable for the oxidant toxic effects in the lung; OxS is spread from the lung to the cardiovascular system. We conclude that the biological mechanisms associated with transient OxS and inflammation are particle size and time-dependent exposure resulting in acute lung injury, which later reaches the vascular system.
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Affiliation(s)
- OG Aztatzi-Aguilar
- Cátedras-CONACYT
- Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, CDMX, Mexico
| | - A Valdés-Arzate
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - Y Debray-García
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - ES Calderón-Aranda
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - M Uribe-Ramirez
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - L Acosta-Saavedra
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - ME Gonsebatt
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, México
| | - JA Maciel-Ruiz
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, México
| | - P Petrosyan
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, México
| | - V Mugica-Alvarez
- Área de Química Aplicada, Universidad Autónoma Metropolitana, CDMX, México
| | - MC Gutiérrez-Ruiz
- Departamento Ciencias de la Salud, Universidad Autónoma Metropolitana, and Unidad de Medicina Traslacional UNAM/INCICH, Instituto de Investigaciones Biomédicas, CDMX, México
| | - LE Gómez-Quiroz
- Departamento Ciencias de la Salud, Universidad Autónoma Metropolitana, and Unidad de Medicina Traslacional UNAM/INCICH, Instituto de Investigaciones Biomédicas, CDMX, México
| | - A Osornio-Vargas
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - J Froines
- Center for Occupational and Environmental Health, School of Public Health, University of California Los Angeles, Los Angeles, CA, USA
| | - MT Kleinman
- Department of Medicine, School of Medicine, University of California-Irvine, Irvine, CA, USA
| | - A De Vizcaya-Ruiz
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
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11
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Liang L, Liu N, Landis MS, Xu X, Feng X, Chen Z, Shang L, Qiu G. Chemical characterization and sources of PM 2.5 at 12-hr resolution in Guiyang, China. ACTA GEOCHIMICA 2018; 37:334-345. [PMID: 31632828 PMCID: PMC6800720 DOI: 10.1007/s11631-017-0248-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The increasing emission of primary and gaseous precursors of secondarily formed atmospheric particulate matter due to continuing industrial development and urbanization are leading to an increased public awareness of environmental issues and human health risks in China. As part of a pilot study, 12-hr integrated fine fraction particulate matter (PM2.5) filter samples were collected to chemically characterize and investigate the sources of ambient particulate matter in Guiyang City, Guizhou Province, southwestern China. Results showed that the 12-hr integrated PM2.5 concentrations exhibited a daytime average of 51 ± 22μg·m-3 (mean ± standard deviation) with a range of 17-128μg·m-3 and a nighttime average of 55 ± 32μg·m-33 with a range of 4-186 μg·m-3. The 24-hr integrated PM2.5 concentrations varied from 15 to 157 μg·m-3, with a mean value of 53 ± 25 μg·m-3, which exceeded the 24-hr PM2.5 standard of 35μg·m-3 set by USEPA, but was below the standard of 75μg·m-3, set by China Ministry of Environmental Protection. Energy-dispersive X-ray fluorescence spectrometry (XRF) was applied to determine PM2.5 chemical element concentrations. The order of concentrations of heavy metals in PM2.5 were iron (Fe) > zinc (Zn) > manganese (Mn) > lead (Pb) > arsenic (As) > chromium (Cr). The total concentration of 18 chemical elements was 13 ± 2 μg·m-3, accounting for 25% in PM2.5, which is comparable to other major cities in China, but much higher than cities outside of China.
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Affiliation(s)
- Longchao Liang
- Guizhou University, Guiyang 550025, China
- State Key Laboratory of Environmental Geochemistry,
Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
- Guizhou Normal University, Guiyang 550001, China
| | - Na Liu
- State Key Laboratory of Environmental Geochemistry,
Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Matthew S. Landis
- U.S. EPA, Office of Research and Development, Research
Triangle Park, NC 27709, USA
| | - Xiaohang Xu
- State Key Laboratory of Environmental Geochemistry,
Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry,
Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Zhuo Chen
- Guizhou Normal University, Guiyang 550001, China
| | - Lihai Shang
- State Key Laboratory of Environmental Geochemistry,
Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Guangle Qiu
- State Key Laboratory of Environmental Geochemistry,
Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
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12
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Miller CN, Dye JA, Ledbetter AD, Schladweiler MC, Richards JH, Snow SJ, Wood CE, Henriquez AR, Thompson LC, Farraj AK, Hazari MS, Kodavanti UP. Uterine Artery Flow and Offspring Growth in Long-Evans Rats following Maternal Exposure to Ozone during Implantation. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:127005. [PMID: 29269335 PMCID: PMC5963593 DOI: 10.1289/ehp2019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 11/07/2017] [Accepted: 11/13/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Epidemiological studies suggest that increased ozone exposure during gestation may compromise fetal growth. In particular, the implantation stage of pregnancy is considered a key window of susceptibility for this outcome. OBJECTIVES The main goals of this study were to investigate the effects of short-term ozone inhalation during implantation on fetal growth outcomes and to explore the potential for alterations in uterine arterial flow as a contributing mechanism. METHODS Pregnant Long-Evans rats were exposed to filtered air, 0.4 ppm ozone, or 0.8 ppm ozone for 4 h/d during implantation, on gestation days (GD) 5 and 6. Tail cuff blood pressure and uterine artery Doppler ultrasound were measured on GD 15, 19, and 21. To assess whether peri-implantation ozone exposure resulted in sustained pulmonary or systemic health effects, bronchoalveolar lavage fluid, serum metabolic and inflammatory end points, and kidney histopathology were evaluated in dams at GD 21. Growth parameters assessed in GD 21 offspring included fetal weight, length, and body composition. RESULTS Measures of maternal uterine arterial flow, including resistance index and mean velocity, indicated that resistance increased between GD 15 and GD 21 in 0.8 ppm dams but decreased in controls, although absolute values were similar in both groups on GD 21. Ozone-exposed dams also had lower serum glucose and higher free fatty acid concentrations than controls on GD 21. On GD 21, both male and female offspring had lower body weight than controls, and pooled subsets of 3 male and 3 female fetuses from litters exposed to 0.8 ppm ozone had lower lean mass and fat mass than pooled control offspring. CONCLUSIONS Findings from our experimental model suggest that the offspring of dams exposed to ozone during implantation had reduced growth compared with controls, possibly as a consequence of ozone-induced vascular dysfunction. https://doi.org/10.1289/EHP2019.
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Affiliation(s)
- Colette N Miller
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
| | - Janice A Dye
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
| | - Allen D Ledbetter
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
| | - Mette C Schladweiler
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
| | - Judy H Richards
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
| | - Samantha J Snow
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
| | - Charles E Wood
- Integrated Systems Toxicology Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. EPA, Research Triangle Park, North Carolina, USA
| | - Andres R Henriquez
- Curriculum in Toxicology, University of North Carolina School of Medicine, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, USA
| | - Leslie C Thompson
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
| | - Aimen K Farraj
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
| | - Mehdi S Hazari
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
| | - Urmila P Kodavanti
- Environmental Public Health Division, National Health & Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency (EPA), Research Triangle Park, North Carolina, USA
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13
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Yu S, Liu F, Wang C, Zhang J, Zhu A, Zou L, Han A, Li J, Chang X, Sun Y. Role of oxidative stress in liver toxicity induced by nickel oxide nanoparticles in rats. Mol Med Rep 2017; 17:3133-3139. [PMID: 29257258 DOI: 10.3892/mmr.2017.8226] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 05/12/2017] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to explore the role of oxidative stress in liver toxicity induced by nickel oxide nanoparticles (nano‑NiO) in rats. Male Wistar rats received saline (control), nano‑NiO [0.015, 0.06 or 0.24 mg/kg body weight (b.w.)] or micro‑NiO (0.24 mg/kg b.w.) by intratracheal instilling twice a week for 6 weeks. Liver tissues were then collected and examined for biomarkers of nitrative and oxidative stress, as well as mRNA expression of heme oxygenase (HO)‑1 and metallothionein (MT)‑1. The results demonstrated that the NiO exposure groups had increased liver wet weight and coefficient to body weight, as well as liver pathological changes, evidenced as cellular edema, hepatic sinus disappeara-nce and binucleated hepatocytes. The activities of total nitric oxide synthase and inducible nitric oxide synthase, and the nitric oxide content, were increased in the 0.24 mg/kg nano‑NiO group compared with the control group. The MT‑1 mRNA expression levels were downregulated, while HO‑1 mRNA was upregulated in the 0.24 mg/kg nano‑NiO exposure group compared with the control group. In addition, abnormal changes of hydroxyl radical, lipid peroxidation, catalase, glutathione peroxidase, total superoxide dismutase and total antioxidative capacity were observed in the liver tissues of the 0.24 mg/kg nano‑NiO exposure group, compared with the control group. The present results therefore indicated that nano‑NiO‑induced liver toxicity may be associated with nitrative and oxidative stress in rats.
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Affiliation(s)
- Shu Yu
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Fangfang Liu
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Chen Wang
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Jingyi Zhang
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - An Zhu
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Lingyue Zou
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Aijie Han
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Jin Li
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Xuhong Chang
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Yingbiao Sun
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
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14
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Fetterman JL, Sammy MJ, Ballinger SW. Mitochondrial toxicity of tobacco smoke and air pollution. Toxicology 2017; 391:18-33. [PMID: 28838641 PMCID: PMC5681398 DOI: 10.1016/j.tox.2017.08.002] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 08/08/2017] [Accepted: 08/09/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Jessica L Fetterman
- Evans Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, United States
| | - Melissa J Sammy
- Department of Pathology, Division of Molecular and Cellular Pathology, University of Alabama, Birmingham, AL, United States
| | - Scott W Ballinger
- Department of Pathology, Division of Molecular and Cellular Pathology, University of Alabama, Birmingham, AL, United States.
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15
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Thomson EM, Breznan D, Karthikeyan S, MacKinnon-Roy C, Vuong NQ, Dabek-Zlotorzynska E, Celo V, Charland JP, Kumarathasan P, Brook JR, Vincent R. Contrasting biological potency of particulate matter collected at sites impacted by distinct industrial sources. Part Fibre Toxicol 2016; 13:65. [PMID: 27906031 PMCID: PMC5134226 DOI: 10.1186/s12989-016-0176-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 11/23/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Industrial sources contribute a significant proportion of anthropogenic particulate matter (PM) emissions, producing particles of varying composition that may differentially impact health. This study investigated the in vitro toxicity of ambient PM collected near industrial sites in relation to particle size and composition. METHODS Size-fractionated particles (ultrafine, PM0.1-2.5, PM2.5-10, PM>10) were collected in the vicinity of steel, copper, aluminium, and petrochemical industrial sites. Human lung epithelial-like A549 and murine macrophage-like J774A.1 cells were exposed for 24 h to particle suspensions (0, 30, 100, 300 μg/cm2). Particle potency was assessed using cytotoxic (resazurin reduction, lactate dehydrogenase (LDH) release) and inflammatory (cytokine release) assays, and regressed against composition (metals, polycyclic aromatic hydrocarbons (PAHs), endotoxin). RESULTS Coarse (PM2.5-10, PM>10) particle fractions were composed primarily of iron and aluminium; in contrast, ultrafine and fine (PM0.1-2.5) fractions displayed considerable variability in metal composition (especially water-soluble metals) across collection sites consistent with source contributions. Semi-volatile and PM-associated PAHs were enriched in the fine and coarse fractions collected near metal industry. Cell responses to exposure at equivalent mass concentrations displayed striking differences among sites (SITE x SIZE and SITE x DOSE interactions, p < 0.05), suggesting that particle composition, in addition to size, impacted particle toxicity. While both J774A.1 and A549 cells exhibited clear particle size-dependent effects, site-dependent differences were more pronounced in J774A.1 cells, suggesting greater sensitivity to particle composition. Plotting particle potency according to cytotoxic and inflammatory response grouped particles by size and site, and showed that particles of similar composition tended to cluster together. Cytotoxic effects in J774A.1 cells correlated with metal and PAH content, while inflammatory responses were associated primarily with endotoxin content in coarse particles. CONCLUSIONS Industrial sources produce particulate emissions with varying chemical composition that differ in their in vitro potency in relation to particle size and the levels of specific constituents.
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Affiliation(s)
- Errol M Thomson
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, K1A 0K9, Canada.
| | - Dalibor Breznan
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, K1A 0K9, Canada
| | - Subramanian Karthikeyan
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, K1A 0K9, Canada
| | - Christine MacKinnon-Roy
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, K1A 0K9, Canada
| | - Ngoc Q Vuong
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, K1A 0K9, Canada
| | - Ewa Dabek-Zlotorzynska
- Analysis and Air Quality Section, Air Quality Research Division, Atmospheric Science and Technology Directorate, Environment and Climate Change Canada, Ottawa, ON, K1A 0H3, Canada
| | - Valbona Celo
- Analysis and Air Quality Section, Air Quality Research Division, Atmospheric Science and Technology Directorate, Environment and Climate Change Canada, Ottawa, ON, K1A 0H3, Canada
| | - Jean-Pierre Charland
- Analysis and Air Quality Section, Air Quality Research Division, Atmospheric Science and Technology Directorate, Environment and Climate Change Canada, Ottawa, ON, K1A 0H3, Canada
| | - Prem Kumarathasan
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, K1A 0K9, Canada
| | - Jeffrey R Brook
- Air Quality Processes Research Section, Air Quality Research Division, Atmospheric Science and Technology Directorate, Environment and Climate Change Canada, Toronto, ON, M3H 5T4, Canada
| | - Renaud Vincent
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, K1A 0K9, Canada.
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16
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Ribeiro JDP, Kalb AC, Campos PP, Cruz ARHDL, Martinez PE, Gioda A, Souza MMD, Gioda CR. Toxicological effects of particulate matter (PM2.5) on rats: Bioaccumulation, antioxidant alterations, lipid damage, and ABC transporter activity. CHEMOSPHERE 2016; 163:569-577. [PMID: 27567156 DOI: 10.1016/j.chemosphere.2016.07.094] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 07/24/2016] [Accepted: 07/28/2016] [Indexed: 06/06/2023]
Abstract
Previous studies have demonstrated the harmful effects of atmospheric pollutants on cardiac systems because of the presence of particulate matter (PM), a complex mixture of numerous substances including trace metals. In this study, the toxicity of PM2.5 from two regions, rural (PM2.5 level of 8.5 ± 4.0 μg m(-3)) and industrial (PM2.5 level of 14.4 ± 4.1 μg m(-3)) in Brazil, was investigated through in vivo experiments in rats. Metal accumulation and biochemical responses were evaluated after rats were exposed to three different concentrations of PM2.5 in saline extract (10× dilution, 5× dilution, and concentrated). The experimental data showed the bioaccumulation of diverse trace metals in the hearts of groups exposed to PM2.5 from both regions. Furthermore, mobilization of the antioxidant defenses and an increase in lipid peroxidation of the cardiac tissue was observed in response to the industrial and rural area PM2.5. Glutathione-S-transferase activity was increased in groups exposed to the 5× and concentrated rural PM2.5. Additionally, ATP-binding cassette (ABC) transporter activity in the cardiac tissue exposed to PM2.5 was reduced in response to the 5× dilution of the rural and industrial region PM2.5. Histological analysis showed a decrease in the percentage of cardiac cells in the heart at all tested concentrations. The results indicate that exposure to different concentrations of PM2.5 from both sources causes biochemical and histological changes in the heart with consequent damage to biological structures; these factors can favor the development of cardiac diseases.
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Affiliation(s)
- Joaquim de Paula Ribeiro
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, FURG, Rio Grande, RS, Brazil; Programa de Pós Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, FURG, Rio Grande, RS, Brazil
| | - Ana Cristina Kalb
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, FURG, Rio Grande, RS, Brazil; Programa de Pós Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, FURG, Rio Grande, RS, Brazil
| | - Paula Peixoto Campos
- Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Alex Rubén Huaman De La Cruz
- Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Departamento de Química, Rio de Janeiro, RJ, Brazil
| | - Pablo Elias Martinez
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, FURG, Rio Grande, RS, Brazil; Programa de Pós Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, FURG, Rio Grande, RS, Brazil
| | - Adriana Gioda
- Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Departamento de Química, Rio de Janeiro, RJ, Brazil
| | - Marta Marques de Souza
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, FURG, Rio Grande, RS, Brazil; Programa de Pós Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, FURG, Rio Grande, RS, Brazil
| | - Carolina Rosa Gioda
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, FURG, Rio Grande, RS, Brazil; Programa de Pós Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, FURG, Rio Grande, RS, Brazil.
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17
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Chan EAW, Buckley B, Farraj AK, Thompson LC. The heart as an extravascular target of endothelin-1 in particulate matter-induced cardiac dysfunction. Pharmacol Ther 2016; 165:63-78. [PMID: 27222357 PMCID: PMC6390286 DOI: 10.1016/j.pharmthera.2016.05.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Exposure to particulate matter air pollution has been causally linked to cardiovascular disease in humans. Several broad and overlapping hypotheses describing the biological mechanisms by which particulate matter exposure leads to cardiovascular disease have been explored, although linkage with specific factors or genes remains limited. These hypotheses may or may not also lead to particulate matter-induced cardiac dysfunction. Evidence pointing to autocrine/paracrine signaling systems as modulators of cardiac dysfunction has increased interest in the emerging role of endothelins as mediators of cardiac function following particulate matter exposure. Endothelin-1, a well-described small peptide expressed in the pulmonary and cardiovascular systems, is best known for its ability to constrict blood vessels, although it can also induce extravascular effects. Research on the role of endothelins in the context of air pollution has largely focused on vascular effects, with limited investigation of responses resulting from the direct effects of endothelins on cardiac tissue. This represents a significant knowledge gap in air pollution health effects research, given the abundance of endothelin receptors found on cardiac tissue and the ability of endothelin-1 to modulate cardiac contractility, heart rate, and rhythm. The plausibility of endothelin-1 as a mediator of particulate matter-induced cardiac dysfunction is further supported by the therapeutic utility of certain endothelin receptor antagonists. The present review examines the possibility that endothelin-1 release caused by exposure to PM directly modulates extravascular effects on the heart, deleteriously altering cardiac function.
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Affiliation(s)
- Elizabeth A W Chan
- Oak Ridge Institute for Science and Education (ORISE) Fellow at the National Center for Environmental Assessment, U.S. Environmental Protection Agency (EPA), Research Triangle Park, NC, USA
| | - Barbara Buckley
- National Center for Environmental Assessment, U.S. EPA, Research Triangle Park, NC, USA
| | - Aimen K Farraj
- Environmental Public Health Division, U.S. EPA, Research Triangle Park, NC, USA
| | - Leslie C Thompson
- Environmental Public Health Division, U.S. EPA, Research Triangle Park, NC, USA.
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18
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Chuang KJ, Lee KY, Pan CH, Lai CH, Lin LY, Ho SC, Ho KF, Chuang HC. Effects of zinc oxide nanoparticles on human coronary artery endothelial cells. Food Chem Toxicol 2016; 93:138-44. [PMID: 27185063 DOI: 10.1016/j.fct.2016.05.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 05/09/2016] [Accepted: 05/11/2016] [Indexed: 12/11/2022]
Abstract
Inhalation of zinc oxide (ZnO) metal fumes is known to cause metal fume fever and to have systemic effects; however, the effects of ZnO nanoparticles (ZnONPs) on the cardiovascular system remain unclear. The objective of this study was to investigate the cardiovascular toxicity of ZnONPs. Human coronary artery endothelial cells (HCAECs) were exposed to ZnONPs of different sizes to investigate the cell viability, 8-hydroxy-2'-deoxyguanosine (8-OHdG), interleukin (IL)-6, nitric oxide (NO), and regulation of cardiovascular disease-related genes. Exposure of HCAECs to ZnONPs resulted in decreased cell viability and increased levels of 8-OHdG, IL-6, and NO. Downregulation of cardiovascular-associated genes was observed in response to ZnONPs in HCAECs determined by qPCR, suggesting that the calcium signaling pathway, neuroactive ligand-receptor interaction, hypertrophic cardiomyopathy, dilated cardiomyopathy, and renin-angiotensin system are important affected pathways in response to ZnONPs. Furthermore, we observed a significant response of AGTR1 to ZnONP exposure in HCAECs. Our results suggest that ZnONPs cause toxicity to HCAECs, which could be associated with cardiovascular dysfunction.
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Affiliation(s)
- Kai-Jen Chuang
- School of Public Health, College of Public Health and Nutrition, Taipei Medical University, Taipei, Taiwan; Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Kang-Yun Lee
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Chih-Hong Pan
- Institute of Labor, Occupational Safety and Health, Ministry of Labor, New Taipei City, Taiwan; School of Public Health, National Defense Medical Center, Taipei, Taiwan.
| | - Ching-Huang Lai
- School of Public Health, National Defense Medical Center, Taipei, Taiwan.
| | - Lian-Yu Lin
- Department of Internal Medicine, Division of Cardiology, National Taiwan University Hospital, Taipei, Taiwan.
| | - Shu-Chuan Ho
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Kin-Fai Ho
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong; Shenzhen Municipal Key Laboratory for Health Risk Analysis, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China.
| | - Hsiao-Chi Chuang
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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Pardo M, Shafer MM, Rudich A, Schauer JJ, Rudich Y. Single Exposure to near Roadway Particulate Matter Leads to Confined Inflammatory and Defense Responses: Possible Role of Metals. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:8777-8785. [PMID: 26121492 DOI: 10.1021/acs.est.5b01449] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Inhalation of traffic-associated atmospheric particulate matter (PM2.5) is recognized as a significant health risk. In this study, we focused on a single ("subclinical response") exposure to water-soluble extracts from PM collected at a roadside site in a major European city to elucidate potential components that drive pulmonary inflammatory, oxidative, and defense mechanisms and their systemic impacts. Intratracheal instillation (IT) of the aqueous extracts induced a 24 h inflammatory response characterized by increased broncho-alveolar lavage fluid (BALF) cells and cytokines (IL-6 and TNF-α), increased reactive oxygen species production, but insignificant lipids and proteins oxidation adducts in mouse lungs. This local response was largely self-resolved by 48 h, suggesting that it could represent a subclinical response to everyday-level exposure. Removal of soluble metals by chelation markedly diminished the pulmonary PM-mediated response. An artificial metal solution (MS) recapitulated the PM extract response. The self-resolving nature of the response is associated with activating defense mechanisms (increased levels of catalase and glutathione peroxidase expression), observed with both PM extract and MS. In conclusion, metals present in PM collected near roadways are largely responsible for the observed transient local pulmonary inflammation and oxidative stress. Simultaneous activation of the antioxidant defense response may protect against oxidative damage.
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Affiliation(s)
- Michal Pardo
- †Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Martin M Shafer
- ‡Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Assaf Rudich
- §Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, and the National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - James J Schauer
- ‡Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Yinon Rudich
- †Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
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Chithra VS, Nagendra SMS. Characterizing and predicting coarse and fine particulates in classrooms located close to an urban roadway. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2014; 64:945-956. [PMID: 25185396 DOI: 10.1080/10962247.2014.894483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The PM10, PM2.5, and PM1 (particulate matter with aerodynamic diameters < 10, < 2.5, and < 1 microm, respectively) concentrations were monitored over a 90-day period in a naturally ventilated school building located at roadside in Chennai City. The 24-hr average PM10, PM2.5, and PM1 concentrations at indoor and outdoor environments were found to be 136 +/- 60, 36 +/- 15, and 20 +/- 12 and 76 +/- 42, 33 +/- 16, and 23 +/- 14 microg/m3, respectively. The size distribution of PM in the classroom indicated that coarse mode was dominant during working hours (08:00 a.m. to 04:00 p.m.), whereas fine mode was dominant during nonworking hours (04:00 p.m. to 08:00 a.m.). The increase in coarser particles coincided with occupant activities in the classrooms and finer particles were correlated with outdoor traffic. Analysis of indoor PM10, PM2.5, and PM1 concentrations monitored at another school, which is located at urban reserved forest area (background site) indicated 3-4 times lower PM10 concentration than the school located at roadside. Also, the indoor PM1 and PM2.5 concentrations were 1.3-1.5 times lower at background site. Further, a mass balance indoor air quality (IAQ) model was modified to predict the indoor PM concentration in the classroom. Results indicated good agreement between the predicted and measured indoor PM2.5 (R2 = 0.72-0.81) and PM1 (R2 = 0.81-0.87) concentrations. But, the measured and predicted PM10 concentrations showed poor correlation (R2 = 0.17-0.23), which may be because the IAQ model could not take into account the sudden increase in PM10 concentration (resuspension of large size particles) due to human activities. Implications: The present study discusses characteristics of the indoor coarse and fine PM concentrations of a naturally ventilated school building located close to an urban roadway and at a background site in Chennai City, India. The study results will be useful to engineers and policymakers to prepare strategies for improving the IAQ inside classrooms. Further, this study may help in the development of IAQ standards and guidelines in India.
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Bhavaraju L, Shannahan J, William A, McCormick R, McGee J, Kodavanti U, Madden M. Diesel and biodiesel exhaust particle effects on rat alveolar macrophages with in vitro exposure. CHEMOSPHERE 2014; 104:126-33. [PMID: 24268344 PMCID: PMC3962714 DOI: 10.1016/j.chemosphere.2013.10.080] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 10/23/2013] [Accepted: 10/30/2013] [Indexed: 05/23/2023]
Abstract
Combustion emissions from diesel engines emit particulate matter which deposits within the lungs. Alveolar macrophages (AMs) encounter the particles and attempt to engulf the particles. Emissions particles from diesel combustion engines have been found to contain diverse biologically active components including metals and polyaromatic hydrocarbons which cause adverse health effects. However little is known about AM response to particles from the incorporation of biodiesel. The objective of this study was to examine the toxicity in Wistar Kyoto rat AM of biodiesel blend (B20) and low sulfur petroleum diesel (PDEP) exhaust particles. Particles were independently suspended in media at a range of 1-500μgmL(-1). Results indicated B20 and PDEP initiated a dose dependent increase of inflammatory signals from AM after exposure. After 24h exposure to B20 and PDEP gene expression of cyclooxygenase-2 (COX-2) and macrophage inflammatory protein 2 (MIP-2) increased. B20 exposure resulted in elevated prostaglandin E2 (PGE2) release at lower particle concentrations compared to PDEP. B20 and PDEP demonstrated similar affinity for sequestration of PGE2 at high concentrations, suggesting detection is not impaired. Our data suggests PGE2 release from AM is dependent on the chemical composition of the particles. Particle analysis including measurements of metals and ions indicate B20 contains more of select metals than PDEP. Other particle components generally reduced by 20% with 20% incorporation of biodiesel into original diesel. This study shows AM exposure to B20 results in increased production of PGE2in vitro relative to diesel.
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Affiliation(s)
- Laya Bhavaraju
- Currciculum in Toxicology, University of North Carolina, Chapel Hill, NC, United States
| | | | - Aaron William
- National Renewable Energy Laboratory, Golden, CO, United States
| | | | - John McGee
- EPHD, NHEERL, US EPA, Research Triangle Park, NC, United States
| | | | - Michael Madden
- EPHD, NHEERL, US EPA, Research Triangle Park, NC, United States.
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Chuang HC, Juan HT, Chang CN, Yan YH, Yuan TH, Wang JS, Chen HC, Hwang YH, Lee CH, Cheng TJ. Cardiopulmonary toxicity of pulmonary exposure to occupationally relevant zinc oxide nanoparticles. Nanotoxicology 2013; 8:593-604. [PMID: 23738974 DOI: 10.3109/17435390.2013.809809] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Exposure to zinc oxide (ZnO) metal fumes is linked to adverse human health effects; however, the hazards of ZnO nanoparticles (ZnONPs) remain unclear. To determine pulmonary exposure to occupationally relevant ZnONPs cause cardiopulmonary injury, Sprague-Dawley rats were exposed to ZnONPs via intratracheal (IT) instillation and inhalation. The relationship between intrapulmonary zinc levels and pulmonary oxidative-inflammatory responses 72 h after ZnONP instillation was determined in bronchoalveolar lavage fluid (BALF). Instilled ZnONPs altered zinc balance and increased the levels of total cells, neutrophils, lactate dehydrogenase (LDH) and total protein in BALF and 8-hydroxy-2'-deoxyguanosine (8-OHdG) in blood after 72 h. The ZnONPs accumulated predominantly in the lungs over 24 h, and trivial amounts of zinc were determined in the heart, liver, kidneys and blood. Furthermore, the inflammatory-oxidative responses induced by occupationally relevant levels of 1.1 and 4.9 mg/m(3) of ZnONP inhalation for 2 weeks were determined in BALF and blood at 1, 7 and 30 days post-exposure. Histopathological examinations of the rat lungs and hearts were performed. Inhalation of ZnONP caused an inflammatory cytological profile. The total cell, neutrophil, LDH and total protein levels were acutely increased in the BALF, and there was an inflammatory pathology in the lungs. There were subchronic levels of white blood cells, granulocytes and 8-OHdG in the blood. Cardiac inflammation and the development of fibrosis were detected 7 days after exposure. Degeneration and necrosis of the myocardium were detected 30 days after exposure. The results demonstrate that ZnONPs cause cardiopulmonary impairments. These findings highlight the occupational health effects for ZnONP-exposed workers.
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Affiliation(s)
- Hsiao-Chi Chuang
- School of Respiratory Therapy, College of Medicine, Taipei Medical University , Taipei , Taiwan
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Kreider ML, Doyle-Eisele M, Russell RG, McDonald JD, Panko JM. Evaluation of potential for toxicity from subacute inhalation of tire and road wear particles in rats. Inhal Toxicol 2013; 24:907-17. [PMID: 23121300 DOI: 10.3109/08958378.2012.730071] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Tire and road wear particles (TRWP) are a component of ambient particulate matter (PM) produced from the interaction of tires with the roadway. Inhalation of PM has been associated with cardiopulmonary morbidities and mortalities thought to stem from pulmonary inflammation. To determine whether TRWP may contribute to these events, the effects of subacute inhalation of TRWP were evaluated in rats. TRWP were collected at a road simulator laboratory, aerosolized, and used to expose male and female Sprague-Dawley rats (n = 10/treatment group) at ~10, 40, or 100 μg/m³ TRWP via nose-only inhalation for 6 h/day for 28 days. Particle size distribution of the aerosolized TRWP was found to be within the respirable range for rats. Toxicity was assessed following OECD guidelines (TG 412). No TRWP-related effects were observed on survival, clinical observations, body or organ weights, gross pathology, food consumption, immune system endpoints, serum chemistry, or biochemical markers of inflammation or cytotoxicity. Rare to few focal areas of subacute inflammatory cell infiltration associated with TWRP exposure were observed in the lungs of one mid and four high exposure animals, but not the low-exposure animals. These alterations were minimal, widely scattered and considered insufficient in extent or severity to have an impact on pulmonary function. Furthermore, it is expected that these focal lesions would remain limited and may undergo resolution without long-term or progressive pulmonary alterations. Therefore, from this study we identified a no-observable-adverse-effect-level (NOAEL) of 112 μg/m³ of TRWP in rats for future use in risk assessment of TRWP.
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Affiliation(s)
- Marisa L Kreider
- ChemRisk, LLC, 20 Stanwix Street, Pittsburgh, Pennsylvania 15222, USA.
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Determination of Heavy Metals in Ambient Air Particulate Matter Using Laser-Induced Breakdown Spectroscopy. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2013. [DOI: 10.1007/s13369-013-0548-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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van der Gon HACD, Gerlofs-Nijland ME, Gehrig R, Gustafsson M, Janssen N, Harrison RM, Hulskotte J, Johansson C, Jozwicka M, Keuken M, Krijgsheld K, Ntziachristos L, Riediker M, Cassee FR. The policy relevance of wear emissions from road transport, now and in the future--an international workshop report and consensus statement. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2013; 63:136-49. [PMID: 23472298 DOI: 10.1080/10962247.2012.741055] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
UNLABELLED Road transport emissions are a major contributor to ambient particulate matter concentrations and have been associated with adverse health effects. Therefore, these emissions are targeted through increasingly stringent European emission standards. These policies succeed in reducing exhaust emissions, but do not address "nonexhaust" emissions from brake wear, tire wear, road wear and suspension in air of road dust. Is this a problem? To what extent do nonexhaust emissions contribute to ambient concentrations of PM10 or PM2.5? In the near future, wear emissions may dominate the remaining traffic-related PM10 emissions in Europe, mostly due to the steep decrease in PM exhaust emissions. This underlines the need to determine the relevance of the wear emissions as a contribution to the existing ambient PM concentrations, and the need to assess the health risks related to wear particles, which has not yet received much attention. During a workshop in 2011, available knowledge was reported and evaluated so as to draw conclusions on the relevance of traffic-related wear emissions for air quality policy development. On the basis of available evidence, which is briefly presented in this paper it was concluded that nonexhaust emissions and in particular suspension in air of road dust are major contributors to exceedances at street locations of the PM10 air quality standards in various European cities. Furthermore, wear-related PM emissions that contain high concentrations of metals may (despite their limited contribution to the mass of nonexhaust emissions) cause significant health risks for the population, especially those living near intensely trafficked locations. To quantify the existing health risks, targeted research is required on wear emissions, their dispersion in urban areas, population exposure, and its effects on health. Such information will be crucial for environmental policymakers as an input for discussions on the need to develop control strategies. IMPLICATIONS Road transport particulate matter (PM) emissions are associated with adverse health effects. Stringent policies succeed in reducing the exhaust PM emissions, but do not address "nonexhaust" emissions from brake wear, tire wear, road wear, and suspension in air of road dust. In the near future the nonexhaust emissions will dominate the road transport PM emissions. Based on the limited available evidence, it is argued that dedicated research is required on nonexhaust emissions and dispersion to urban areas from both an air quality and a public health perspective. The implicated message to regulators and policy makers is that road transport emissions continue to be an issue for health and air quality, despite the encouraging rapid decrease of tailpipe exhaust emissions.
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Affiliation(s)
- Hugo A C Denier van der Gon
- Department of Climate, Air and Sustainability, Netherlands Organisation for Applied Scientific Research, TNO, Utrecht, The Netherlands.
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Giordano S, Adamo P, Spagnuolo V, Tretiach M, Bargagli R. Accumulation of airborne trace elements in mosses, lichens and synthetic materials exposed at urban monitoring stations: towards a harmonisation of the moss-bag technique. CHEMOSPHERE 2013; 90:292-9. [PMID: 22901434 DOI: 10.1016/j.chemosphere.2012.07.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 07/05/2012] [Accepted: 07/08/2012] [Indexed: 05/22/2023]
Abstract
Mosses, lichens and cellulose filters were exposed for 17 weeks at four urban monitoring stations in Naples (S Italy) to assess the accumulation of airborne Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Ni, Pb, Ti, V, and Zn. In each site, the element accumulation was significantly higher in the moss Hypnum cupressiforme than in the lichen Pseudevernia furfuracea. Acid washed mosses accumulated the highest amount of trace elements, but the differences in element concentrations among the moss samples exposed after water washing and different devitalisation treatments (acid washing, oven drying and water boiling) and between the lichen samples exposed with and without the nylon bag were not statistically significant. The cellulose filters showed the lowest accumulation capability. The reciprocal ordination of sites and exposed materials showed an increasing contamination gradient (especially for Pb, Cu and Zn) from the background site to the trafficked city streets; this pattern was undetectable from PM(10) data recorded by the automatic monitoring devices operating in the four exposure sites. The element profile in exposed materials did not change substantially throughout the urban area and particles of polluted urban soils seem the main source of airborne metals in Naples. Through a comprehensive evaluation of the results from this and previous studies, a protocol is suggested for the moss-bag monitoring of trace element deposition in urban environments.
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Affiliation(s)
- S Giordano
- Dipartimento di Biologia Strutturale e Funzionale, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
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27
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Lou S, Zhong L, Yang X, Xue T, Gai R, Zhu D, Zhao Y, Yang B, Ying M, He Q. Efficacy of all-trans retinoid acid in preventing nickel induced cardiotoxicity in myocardial cells of rats. Food Chem Toxicol 2013; 51:251-8. [DOI: 10.1016/j.fct.2012.09.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 09/05/2012] [Accepted: 09/08/2012] [Indexed: 12/11/2022]
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Uski OJ, Happo MS, Jalava PI, Brunner T, Kelz J, Obernberger I, Jokiniemi J, Hirvonen MR. Acute systemic and lung inflammation in C57Bl/6J mice after intratracheal aspiration of particulate matter from small-scale biomass combustion appliances based on old and modern technologies. Inhal Toxicol 2012; 24:952-65. [DOI: 10.3109/08958378.2012.742172] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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29
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Golomb E, Matza D, Cummings CA, Schwalb H, Kodavanti UP, Schneider A, Houminer E, Korach A, Nyska A, Shapira OM. Myocardial Mitochondrial Injury Induced by Pulmonary Exposure to Particulate Matter in Rats. Toxicol Pathol 2012; 40:779-88. [DOI: 10.1177/0192623312441409] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Exposure to air pollution has been associated with acute myocardial ischemia, impaired myocardrial function, and ST-segment depression. Particulate matter (PM)–associated metals, especially vanadium and nickel, have been implicated in observed cardiovascular impairments. We aimed to assess the effect of single intratracheal pulmonary exposure to vanadium-rich respirable oil combustion PM (HP-10) on the intrinsic myocardial ischemic tolerance and mitochondrial integrity in rats. The authors subjected isolated heart tissue slices derived from saline or PM-exposed rats to low glucose low oxygen induced ischemia followed by oxygenated condition with glucose supplementation. Mitochondrial structural integrity was determined by TEM (transmission electron microscopy) and functionality by the 3-(4, 5 dimethylthiazol-2yl)-2, 5 diphenyltetrazolium bromide (MTT) assay. Rats exposed to PM exhibited no apparent inhibition of mitochondrial dehydrogenase activity in oxygenated conditions at 24 or 48 hr post–PM exposure. However, in conditions of simulated ischemia/reoxygenation, these heart slices showed a delayed but consistent and significant decrease in dehydrogenase activity compared to controls at 48 hr after exposure to PM. Electron microscopy revealed significant myocardial mitochondrial injury upon exposure to PM characterized by mitochondrial swelling and fusion. The authors conclude that exposure to soluble vanadium-rich PM induces mitochondrial functional impairment and structural abnormality, which compromises mitochondrial respiration and results in decreased tolerance to ischemia/reoxygenation in rats.
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Affiliation(s)
- Eliahu Golomb
- Department of Pathology, Shaare Zedek Medical Center, Hebrew University School of Medicine, Jerusalem, Israel
| | - Didi Matza
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | | | - Herzl Schwalb
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Urmila P. Kodavanti
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
| | - Aviva Schneider
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Esther Houminer
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Amit Korach
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Abraham Nyska
- Department of Pathology, Sackler School of Medicine, Tel Aviv University, Tel-Aviv; and Consultant in Toxicologic Pathology, Timrat, Israel
| | - Oz M. Shapira
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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Shen H, Anastasio C. Formation of hydroxyl radical from San Joaquin Valley particles extracted in a cell-free surrogate lung fluid. ATMOSPHERIC CHEMISTRY AND PHYSICS 2011; 11:9671-9682. [PMID: 22121357 PMCID: PMC3223122 DOI: 10.5194/acp-11-9671-2011] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Previous studies have suggested that the adverse health effects from ambient particulate matter (PM) are linked to the formation of reactive oxygen species (ROS) by PM in cardiopulmonary tissues. While hydroxyl radical ((•)OH) is the most reactive of the ROS species, there are few quantitative studies of (•)OH generation from PM. Here we report on (•)OH formation from PM collected at an urban (Fresno) and rural (Westside) site in the San Joaquin Valley (SJV) of California. We quantified (•)OH in PM extracts using a cell-free, phosphate-buffered saline (PBS) solution with or without 50μM ascorbate (Asc). The results show that generally the urban Fresno PM generates much more (•)OH than the rural Westside PM. The presence of Asc at a physiologically relevant concentration in the extraction solution greatly enhances (•)OH formation from all the samples. Fine PM (PM(2.5)) generally makes more (•)OH than the corresponding coarse PM (PM(cf), i.e. with diameters of 2.5 to 10 μm) normalized by air volume collected, while the coarse PM typically generates more (•)OH normalized by PM mass. (•)OH production by SJV PM is reduced on average by (97±6)% when the transition metal chelator desferoxamine (DSF) is added to the extraction solution, indicating a dominant role of transition metals. By measuring calibration curves of (•)OH generation from copper and iron, and quantifying copper and iron concentrations in our particle extracts, we find that PBS-soluble copper is primarily responsible for (•)OH production by the SJV PM, while iron often makes a significant contribution. Extrapolating our results to expected burdens of PM-derived (•)OH in human lung lining fluid suggests that typical daily PM exposures in the San Joaquin Valley are unlikely to result in a high amount of pulmonary (•)OH, although high PM events could produce much higher levels of (•)OH, which might lead to cytotoxicity.
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Affiliation(s)
- H Shen
- Department of Land, Air and Water Resources, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
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31
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Xu Z, Xu X, Zhong M, Hotchkiss IP, Lewandowski RP, Wagner JG, Bramble LA, Yang Y, Wang A, Harkema JR, Lippmann M, Rajagopalan S, Chen LC, Sun Q. Ambient particulate air pollution induces oxidative stress and alterations of mitochondria and gene expression in brown and white adipose tissues. Part Fibre Toxicol 2011; 8:20. [PMID: 21745393 PMCID: PMC3152885 DOI: 10.1186/1743-8977-8-20] [Citation(s) in RCA: 153] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Accepted: 07/11/2011] [Indexed: 12/21/2022] Open
Abstract
Background Prior studies have demonstrated a link between air pollution and metabolic diseases such as type II diabetes. Changes in adipose tissue and its mitochondrial content/function are closely associated with the development of insulin resistance and attendant metabolic complications. We investigated changes in adipose tissue structure and function in brown and white adipose depots in response to chronic ambient air pollutant exposure in a rodent model. Methods Male ApoE knockout (ApoE-/-) mice inhaled concentrated fine ambient PM (PM < 2.5 μm in aerodynamic diameter; PM2.5) or filtered air (FA) for 6 hours/day, 5 days/week, for 2 months. We examined superoxide production by dihydroethidium staining; inflammatory responses by immunohistochemistry; and changes in white and brown adipocyte-specific gene profiles by real-time PCR and mitochondria by transmission electron microscopy in response to PM2.5 exposure in different adipose depots of ApoE-/- mice to understand responses to chronic inhalational stimuli. Results Exposure to PM2.5 induced an increase in the production of reactive oxygen species (ROS) in brown adipose depots. Additionally, exposure to PM2.5 decreased expression of uncoupling protein 1 in brown adipose tissue as measured by immunohistochemistry and Western blot. Mitochondrial number was significantly reduced in white (WAT) and brown adipose tissues (BAT), while mitochondrial size was also reduced in BAT. In BAT, PM2.5 exposure down-regulated brown adipocyte-specific genes, while white adipocyte-specific genes were differentially up-regulated. Conclusions PM2.5 exposure triggers oxidative stress in BAT, and results in key alterations in mitochondrial gene expression and mitochondrial alterations that are pronounced in BAT. We postulate that exposure to PM2.5 may induce imbalance between white and brown adipose tissue functionality and thereby predispose to metabolic dysfunction.
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Affiliation(s)
- Zhaobin Xu
- The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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Upadhyay S, Ganguly K, Stoeger T, Semmler-Bhenke M, Takenaka S, Kreyling WG, Pitz M, Reitmeir P, Peters A, Eickelberg O, Wichmann HE, Schulz H. Cardiovascular and inflammatory effects of intratracheally instilled ambient dust from Augsburg, Germany, in spontaneously hypertensive rats (SHRs). Part Fibre Toxicol 2010; 7:27. [PMID: 20920269 PMCID: PMC2956709 DOI: 10.1186/1743-8977-7-27] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Accepted: 09/29/2010] [Indexed: 12/31/2022] Open
Abstract
Rationale Several epidemiological studies associated exposure to increased levels of particulate matter in Augsburg, Germany with cardiovascular mortality and morbidity. To elucidate the mechanisms of cardiovascular impairments we investigated the cardiopulmonary responses in spontaneously hypertensive rats (SHR), a model for human cardiovascular diseases, following intratracheal instillation of dust samples from Augsburg. Methods 250 μg, 500 μg and 1000 μg of fine ambient particles (aerodynamic diameter <2.5 μm, PM2.5-AB) collected from an urban background site in Augsburg during September and October 2006 (PM2.5 18.2 μg/m3, 10,802 particles/cm3) were instilled in 12 months old SHRs to assess the inflammatory response in bronchoalveolar lavage fluid (BALF), blood, lung and heart tissues 1 and 3 days post instillation. Radio-telemetric analysis was performed to investigate the cardiovascular responses following instillation of particles at the highest dosage based on the inflammatory response observed. Results Exposure to 1000 μg of PM2.5-AB was associated with a delayed increase in delta mean blood pressure (ΔmBP) during 2nd-4th day after instillation (10.0 ± 4.0 vs. -3.9 ± 2.6 mmHg) and reduced heart rate (HR) on the 3rd day post instillation (325.1 ± 8.8 vs. 348.9 ± 12.5 bpm). BALF cell differential and inflammatory markers (osteopontin, interleukin-6, C-reactive protein, and macrophage inflammatory protein-2) from pulmonary and systemic level were significantly induced, mostly in a dose-dependent way. Protein analysis of various markers indicate that PM2.5-AB instillation results in an activation of endothelin system (endothelin1), renin-angiotensin system (angiotensin converting enzyme) and also coagulation system (tissue factor, plasminogen activator inhibitor-1) in pulmonary and cardiac tissues during the same time period when alternation in ΔmBP and HR have been detected. Conclusions Our data suggests that high concentrations of PM2.5-AB exposure triggers low grade PM mediated inflammatory effects in the lungs but disturbs vascular homeostasis in pulmonary tissues and on a systemic level by affecting the renin angiotensin system, the endothelin system and the coagulation cascade. These findings are indicative for promotion of endothelial dysfunction, atherosclerotic lesions, and thrombogeneis and, thus, provide plausible evidence that susceptible-predisposed individuals may develop acute cardiac events like myocardial infarction when repeatedly exposed to high pollution episodes as observed in epidemiological studies in Augsburg, Germany.
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Affiliation(s)
- Swapna Upadhyay
- Institute of Lung Biology and Disease, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg/Munich, Germany
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