1
|
Wang T, Han Y, Chen X, Chen W, Li H, Wang Y, Qiu X, Gong J, Li W, Zhu T. Particulate Air Pollution and Blood Pressure: Signaling by the Arachidonate Metabolism. Hypertension 2023; 80:2687-2696. [PMID: 37869894 DOI: 10.1161/hypertensionaha.123.21410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 09/25/2023] [Indexed: 10/24/2023]
Abstract
BACKGROUND Short-term exposure to ambient particulate matter (PM) can raise blood pressure, but the underlying mechanisms are unclear. We explored whether arachidonate metabolites serve as biological intermediates in PM-associated prohypertensive changes. METHODS This panel study recruited 110 adults aged 50 to 65 years living in Beijing, China. The participants' blood pressure, arterial stiffness, and cardiac and endothelial function were measured up to 7 times. The serum concentrations of arachidonate metabolites were quantified by targeted lipidomics. Ambient concentrations of fine PM (PM2.5), black carbon, and accumulation mode particles were continuously monitored at a station and their associations with the health indicators were evaluated. RESULTS Interquartile range increases in 25 to 96-hour-lag exposure to PM2.5, black carbon, and accumulation mode particles were associated with significant increases in systolic blood pressure (brachial: 0.8-3.2 mm Hg; central: 0.7-2.8 mm Hg) and diastolic blood pressure (brachial, 0.5-1.5 mm Hg; central, 0.5-1.6 mm Hg). At least 1 pollutant was associated with increases in augmentation pressure and heart rate and decreases in reactive hyperemia index and ejection time. The serum concentrations of arachidonate were significantly increased by 3.3% to 14.6% in association with PM exposure, which mediated 9% of the PM-associated increases in blood pressure. The levels of eicosanoids from the cytochrome P450, cyclooxygenase, and lipoxygenase pathways changed with PM exposure, and those from the cytochrome pathway significantly mediated the association between PM exposure and blood pressure. CONCLUSIONS Short-term exposure to particulate air pollution was associated with a prohypertensive change in adults, which was in part mediated by alteration of arachidonate metabolism.
Collapse
Affiliation(s)
- Teng Wang
- BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering (T.W., Y.H., X.C., W.C., H.L., Y.W., X.Q., J.G., T.Z.), Peking University, Beijing, China
- School of Health Policy and Management, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (T.W.)
| | - Yiqun Han
- BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering (T.W., Y.H., X.C., W.C., H.L., Y.W., X.Q., J.G., T.Z.), Peking University, Beijing, China
- Environmental Research Group, MRC Centre for Environment and Health, Imperial College London, United Kingdom (Y.H.)
| | - Xi Chen
- BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering (T.W., Y.H., X.C., W.C., H.L., Y.W., X.Q., J.G., T.Z.), Peking University, Beijing, China
- GRiC, Shenzhen Institute of Building Research Co., Ltd., China (X.C.)
| | - Wu Chen
- BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering (T.W., Y.H., X.C., W.C., H.L., Y.W., X.Q., J.G., T.Z.), Peking University, Beijing, China
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles (W.C.)
| | - Haonan Li
- BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering (T.W., Y.H., X.C., W.C., H.L., Y.W., X.Q., J.G., T.Z.), Peking University, Beijing, China
| | - Yanwen Wang
- BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering (T.W., Y.H., X.C., W.C., H.L., Y.W., X.Q., J.G., T.Z.), Peking University, Beijing, China
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China (Y.W.)
| | - Xinghua Qiu
- BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering (T.W., Y.H., X.C., W.C., H.L., Y.W., X.Q., J.G., T.Z.), Peking University, Beijing, China
| | - Jicheng Gong
- BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering (T.W., Y.H., X.C., W.C., H.L., Y.W., X.Q., J.G., T.Z.), Peking University, Beijing, China
| | - Weiju Li
- Peking University Hospital (W.L.), Peking University, Beijing, China
| | - Tong Zhu
- BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering (T.W., Y.H., X.C., W.C., H.L., Y.W., X.Q., J.G., T.Z.), Peking University, Beijing, China
| |
Collapse
|
2
|
Yin C, Ma B, Zhang X, Lan L, Ren G, Xu J, Wang J, Yang D. Overexpression of Laminin 5γ2 Chain Correlates with Tumor Cell Proliferation, Invasion, and Poor Prognosis in Laryngeal Squamous Cell Carcinoma. Journal of Oncology 2022; 2022:1-11. [PMID: 36284634 PMCID: PMC9588344 DOI: 10.1155/2022/7248064] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 09/24/2022] [Indexed: 11/17/2022]
Abstract
Objective Laryngeal squamous cell carcinoma (LSCC) is a common malignant tumor. Laminin 5γ2 chain (LAMC2) was reported to be associated with tumorigenesis. This study explored the role of LAMC2 on LSCC progression by regulating the integrinβ1/FAK/Src/AKT pathway. Methods The level of LAMC2 in 46 LSCC patients was detected by qRT-PCR and western blot. Then the relationship between LAMC2 expression and LSCC malignancy as well as prognosis was analyzed, and the effect of LAMC2 expression on LSCC patient survival was also analyzed using the Kaplan–Meier survival curves. Afterwards, the LSCC cells were transfected with LAMC2 overexpression and knockdown vectors, the effect of LAMC2 on LSCC cell viability, proliferation ability, cell cycle, cell migration, and invasion were detected by CCK-8, colony formation, flow cytometry, wound healing, and Transwell assays. The expression of EMT-related biomarkers and integrin β1/FAK/Src/AKT signaling-related proteins was detected by western blot. Moreover, the effect of LAMC2 on LSCC tumor growth was evaluated by in vivo xenograft experiments and western blot. Results LAMC2 was expressed at high level in LSCC tissues and associated with poor prognosis. LAMC2 overexpression increased TU177 cell viability, proliferation ability, promoted cell cycle, cell migration, and invasion capacity. The expression of N-cadherin, vimentin, and integrinβ1/FAK/Src/AKT related proteins was increased, while the expression of E-cadherin protein was decreased. When the LAMC2 knockdown in AMC-HN-8 cells had opposite effects. Furthermore, shLAMC2 decreased tumor volume and the expression of LAMC2, Ki-67 and integrinβ1, but increased the expression of E-cadherin in LSCC tumor-bearing mice. Conclusion The findings suggested that LAMC2 was overexpressed in LSCC and correlated with poor prognosis. LAMC2 knockdown inhibited LSCC progression by regulating the integrinβ1/FAK/Src/AKT signaling pathway. Therefore, LAMC2 could be a target for LSCC therapy.
Collapse
|
3
|
Vázquez-gómez G, Karasová M, Tylichová Z, Kabátková M, Hampl A, Matthews J, Neča J, Ciganek M, Machala M, Vondráček J. Aryl Hydrocarbon Receptor (AhR) Limits the Inflammatory Responses in Human Lung Adenocarcinoma A549 Cells via Interference with NF-κB Signaling. Cells 2022; 11:707. [PMID: 35203356 PMCID: PMC8870046 DOI: 10.3390/cells11040707] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/01/2022] [Accepted: 02/14/2022] [Indexed: 02/08/2023] Open
Abstract
Apart from its role in the metabolism of carcinogens, the aryl hydrocarbon receptor (AhR) has been suggested to be involved in the control of inflammatory responses within the respiratory tract. However, the mechanisms responsible for this are only partially known. In this study, we used A549 cell line, as a human model of lung alveolar type II (ATII)-like cells, to study the functional role of the AhR in control of inflammatory responses. Using IL-1β as an inflammation inducer, we found that the induction of cyclooxygenase-2 and secretion of prostaglandins, as well as expression and release of pro-inflammatory cytokines, were significantly higher in the AhR-deficient A549 cells. This was linked with an increased nuclear factor-κB (NF-κB) activity, and significantly enhanced phosphorylation of its regulators, IKKα/β, and their target IκBα, in the AhR-deficient A549 cells. In line with this, when we mimicked the exposure to a complex mixture of airborne pollutants, using an organic extract of reference diesel exhaust particle mixture, an exacerbated inflammatory response was observed in the AhR-deficient cells, as compared with wild-type A549 cells. Together, the present results indicate that the AhR may act as a negative regulator of the inflammatory response in the A549 model, via a direct modulation of NF-κB signaling. Its role(s) in the control of inflammation within the lung alveoli exposed to airborne pollutants, especially those which simultaneously activate the AhR, thus deserve further attention.
Collapse
|
4
|
Rossner P, Cervena T, Vojtisek-Lom M, Neca J, Ciganek M, Vrbova K, Ambroz A, Novakova Z, Elzeinova F, Sima M, Simova Z, Holan V, Beranek V, Pechout M, Macoun D, Rossnerova A, Topinka J. Markers of lipid oxidation and inflammation in bronchial cells exposed to complete gasoline emissions and their organic extracts. Chemosphere 2021; 281:130833. [PMID: 34015653 DOI: 10.1016/j.chemosphere.2021.130833] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/29/2021] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
Road traffic emissions consist of gaseous components, particles of various sizes, and chemical compounds that are bound to them. Exposure to vehicle emissions is implicated in the etiology of inflammatory respiratory disorders. We investigated the inflammation-related markers in human bronchial epithelial cells (BEAS-2B) and a 3D model of the human airways (MucilAir™), after exposure to complete emissions and extractable organic matter (EOM) from particles generated by ordinary gasoline (E5), and a gasoline-ethanol blend (E20; ethanol content 20% v/v). The production of 22 lipid oxidation products (derivatives of linoleic and arachidonic acid, AA) and 45 inflammatory molecules (cytokines, chemokines, growth factors) was assessed after days 1 and 5 of exposure, using LC-MS/MS and a multiplex immunoassay, respectively. The response observed in MucilAir™ exposed to E5 gasoline emissions, characterized by elevated levels of pro-inflammatory AA metabolites (prostaglandins) and inflammatory markers, was the most pronounced. E20 EOM exposure was associated with increased levels of AA metabolites with anti-inflammatory effects in this cell model. The exposure of BEAS-2B cells to complete emissions reduced lipid oxidation, while E20 EOM tended to increase concentrations of AA metabolite and chemokine production; the impacts on other inflammatory markers were limited. In summary, complete E5 emission exposure of MucilAir™ induces the processes associated with the pro-inflammatory response. This observation highlights the potential negative health impacts of ordinary gasoline, while the effects of alternative fuel are relatively weak.
Collapse
Affiliation(s)
- Pavel Rossner
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Tereza Cervena
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic; Department of Physiology, Faculty of Science, Charles University, Vinicna 7, 128 44, Prague, Czech Republic.
| | - Michal Vojtisek-Lom
- Centre of Vehicles for Sustainable Mobility, Faculty of Mechanical Engineering, Czech Technical University in Prague, Technicka 4, 160 00, Prague, Czech Republic.
| | - Jiri Neca
- Department of Chemistry and Toxicology, Veterinary Research Institute, 621 00, Brno, Czech Republic.
| | - Miroslav Ciganek
- Department of Chemistry and Toxicology, Veterinary Research Institute, 621 00, Brno, Czech Republic.
| | - Kristyna Vrbova
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Antonin Ambroz
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Zuzana Novakova
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Fatima Elzeinova
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Michal Sima
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Zuzana Simova
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Vladimir Holan
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Vit Beranek
- Centre of Vehicles for Sustainable Mobility, Faculty of Mechanical Engineering, Czech Technical University in Prague, Technicka 4, 160 00, Prague, Czech Republic.
| | - Martin Pechout
- Department of Vehicles and Ground Transport, Czech University of Life Sciences in Prague, Kamycka 129, 165 21, Prague, Czech Republic.
| | - David Macoun
- Department of Vehicles and Ground Transport, Czech University of Life Sciences in Prague, Kamycka 129, 165 21, Prague, Czech Republic.
| | - Andrea Rossnerova
- Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| | - Jan Topinka
- Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine of the CAS, Videnska 1083, 142 20, Prague, Czech Republic.
| |
Collapse
|
5
|
Faber SC, McNabb NA, Ariel P, Aungst ER, McCullough SD. Exposure Effects Beyond the Epithelial Barrier: Transepithelial Induction of Oxidative Stress by Diesel Exhaust Particulates in Lung Fibroblasts in an Organotypic Human Airway Model. Toxicol Sci 2021; 177:140-155. [PMID: 32525552 DOI: 10.1093/toxsci/kfaa085] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
In vitro bronchial epithelial monoculture models have been pivotal in defining the adverse effects of inhaled toxicant exposures; however, they are only representative of one cellular compartment and may not accurately reflect the effects of exposures on other cell types. Lung fibroblasts exist immediately beneath the bronchial epithelial barrier and play a central role in lung structure and function, as well as disease development and progression. We tested the hypothesis that in vitro exposure of a human bronchial epithelial cell barrier to the model oxidant diesel exhaust particulates caused transepithelial oxidative stress in the underlying lung fibroblasts using a human bronchial epithelial cell and lung fibroblast coculture model. We observed that diesel exhaust particulates caused transepithelial oxidative stress in underlying lung fibroblasts as indicated by intracellular accumulation of the reactive oxygen species hydrogen peroxide, oxidation of the cellular antioxidant glutathione, activation of NRF2, and induction of oxidative stress-responsive genes. Further, targeted antioxidant treatment of lung fibroblasts partially mitigated the oxidative stress response gene expression in adjacent human bronchial epithelial cells during diesel exhaust particulate exposure. This indicates that exposure-induced oxidative stress in the airway extends beyond the bronchial epithelial barrier and that lung fibroblasts are both a target and a mediator of the adverse effects of inhaled chemical exposures despite being separated from the inhaled material by an epithelial barrier. These findings illustrate the value of coculture models and suggest that transepithelial exposure effects should be considered in inhalation toxicology research and testing.
Collapse
Affiliation(s)
- Samantha C Faber
- Curriculum in Toxicology and Environmental Medicine, UNC Chapel Hill, Chapel Hill, North Carolina 27599
| | - Nicole A McNabb
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, North Carolina 27599
| | - Pablo Ariel
- Microscopy Services Laboratory, Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Emily R Aungst
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, North Carolina 27599
| | - Shaun D McCullough
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, North Carolina 27599
| |
Collapse
|
6
|
Zerboni A, Bengalli R, Fiandra L, Catelani T, Mantecca P. Cellular Mechanisms Involved in the Combined Toxic Effects of Diesel Exhaust and Metal Oxide Nanoparticles. Nanomaterials 2021; 11:1437. [PMID: 34072490 PMCID: PMC8228517 DOI: 10.3390/nano11061437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 12/22/2022]
Abstract
Diesel exhaust particles (DEPs) and non-exhaust particles from abrasion are two main representative sources of air pollution to which humans are exposed daily, together with emerging nanomaterials, whose emission is increasing considerably. In the present work, we aimed to investigate whether DEPs, metal oxide nanoparticles (MeO-NPs), and their mixtures could affect alveolar cells. The research was focused on whether NPs induced different types of death in cells, and on their effects on cell motility and migration. Autophagy and cell cycles were investigated via cytofluorimetric analyses, through the quantification of the autophagic biomarker LC3B and PI staining, respectively. Cellular ultrastructures were then observed via TEM. Changes in cell motility and migration were assessed via transwell migration assay, and by the cytofluorimetric analysis of E-cadherin expression. A colony-forming efficiency (CFE) assay was performed in order to investigate the interactions between cells inside the colonies, and to see how these interactions change after exposure to the single particles or their mixtures. The results obtained suggest that NPs can either reduce the toxicity of DEPs (CuO) or enhance it (ZnO), through a mechanism that may involve autophagy as cells' response to stressors and as a consequence of particles' cellular uptake. Moreover, NPs can induce modification of E-cadherin expression and, consequentially, of colonies' phenotypes.
Collapse
Affiliation(s)
- Alessandra Zerboni
- POLARIS Research Center, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
| | - Rossella Bengalli
- POLARIS Research Center, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
| | - Luisa Fiandra
- POLARIS Research Center, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), Italy, 56122 Pisa, Italy
| | - Tiziano Catelani
- Microscopy facility, University of Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
| | - Paride Mantecca
- POLARIS Research Center, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
| |
Collapse
|
7
|
Bilinovich SM, Lewis K, Thompson BL, Prokop JW, Campbell DB. Environmental Epigenetics of Diesel Particulate Matter Toxicogenomics. Int J Environ Res Public Health 2020; 17:E7386. [PMID: 33050454 DOI: 10.3390/ijerph17207386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/07/2020] [Accepted: 10/08/2020] [Indexed: 11/17/2022]
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by disruptions in social communication and behavioral flexibility. Both genetic and environmental factors contribute to ASD risk. Epidemiologic studies indicate that roadway vehicle exhaust and in utero exposure to diesel particulate matter (DPM) are associated with ASD. Using the Comparative Toxicogenomics Database (CTD), we identified genes connected to DPM exposure and ASD, extracted the known enhancers/promoters of the identified genes, and integrated this with Assay for Transposase Accessible Chromatin (ATAC-seq) data from DPM-exposed human neural progenitor cells. Enhancer/promoter elements with significantly different chromosome accessibility revealed enriched DNA sequence motifs with transcription factor binding sites for EGR1. Variant extraction for linkage disequilibrium blocks of these regions followed by analysis through Genome Wide Association Studies (GWAS) revealed multiple neurological trait associations including exploratory eye movement and brain volume measurement. This approach highlights the effects of pollution on the regulatory regions of genes implicated in ASD by genetic studies, indicating convergence of genetic and environmental factors on molecular networks that contribute to ASD. Integration of publicly available data from the CTD, cell culture exposure studies, and phenotypic genetics synergize extensive evidence of chemical exposures on gene regulation for altered brain development.
Collapse
|
8
|
Cochard M, Ledoux F, Landkocz Y. Atmospheric fine particulate matter and epithelial mesenchymal transition in pulmonary cells: state of the art and critical review of the in vitro studies. J Toxicol Environ Health B Crit Rev 2020; 23:293-318. [PMID: 32921295 DOI: 10.1080/10937404.2020.1816238] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Exposure to fine particulate matter (PM2.5) has been associated with several diseases including asthma, chronic obstructive pulmonary disease (COPD) and lung cancer. Mechanisms such as oxidative stress and inflammation are well-documented and are considered as the starting point of some of the pathological responses. However, a number of studies also focused on epithelial-mesenchymal transition (EMT), which is a biological process involved in fibrotic diseases and cancer progression notably via metastasis induction. Up until now, EMT was widely reported in vivo and in vitro in various cell types but investigations dealing with in vitro studies of PM2.5 induced EMT in pulmonary cells are limited. Further, few investigations combined the necessary endpoints for validation of the EMT state in cells: such as expression of several surface, cytoskeleton or extracellular matrix biomarkers and activation of transcription markers and epigenetic factors. Studies explored various cell types, cultured under differing conditions and exposed for various durations to different doses. Such unharmonized protocols (1) might introduce bias, (2) make difficult comparison of results and (3) preclude reaching a definitive conclusion regarding the ability of airborne PM2.5 to induce EMT in pulmonary cells. Some questions remain, in particular the specific PM2.5 components responsible for EMT triggering. The aim of this review is to examine the available PM2.5 induced EMT in vitro studies on pulmonary cells with special emphasis on the critical parameters considered to carry out future research in this field. This clarification appears necessary for production of reliable and comparable results.
Collapse
Affiliation(s)
- Margaux Cochard
- Unité de Chimie Environnementale et Interactions sur le Vivant, UCEIV UR4492, SFR Condorcet FR-CNRS-3417, Univ. Littoral Côte d'Opale (ULCO) , Dunkerque, France
| | - Frédéric Ledoux
- Unité de Chimie Environnementale et Interactions sur le Vivant, UCEIV UR4492, SFR Condorcet FR-CNRS-3417, Univ. Littoral Côte d'Opale (ULCO) , Dunkerque, France
| | - Yann Landkocz
- Unité de Chimie Environnementale et Interactions sur le Vivant, UCEIV UR4492, SFR Condorcet FR-CNRS-3417, Univ. Littoral Côte d'Opale (ULCO) , Dunkerque, France
| |
Collapse
|
9
|
Siegrist KJ, Romo D, Upham BL, Armstrong M, Quinn K, Vanderlinden L, Osgood RS, Velmurugan K, Elie M, Manke J, Reinhold D, Reisdorph N, Saba L, Bauer AK. Early Mechanistic Events Induced by Low Molecular Weight Polycyclic Aromatic Hydrocarbons in Mouse Lung Epithelial Cells: A Role for Eicosanoid Signaling. Toxicol Sci 2020; 169:180-193. [PMID: 30690640 DOI: 10.1093/toxsci/kfz030] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Low molecular weight polycyclic aromatic hydrocarbons (LMW PAHs; < 206.3 g/mol) are under regulated environmental contaminants (eg, secondhand smoke) that lead to gap junction dysregulation, p38 MAPK activation, and increased mRNA production of inflammatory mediators, such as cytokines and cyclooxygenase (COX2), in lung epithelial cells. However, the early mechanisms involving lipid signaling through the arachidonic acid pathway and subsequent eicosanoid production leading to these downstream events are not known. Common human exposures are to mixtures of LMW PAHs, thus C10 cells (a mouse lung epithelial cell line) were exposed to a representative binary PAH mixture, 1-methylanthracene (1-MeA) and fluoranthene (Flthn), for 30 min-24 h with and without p38 and cytosolic phospholipase A2 (cPLA2) inhibitors. Cytosolic phospholipase A2 inhibition reversed PAH-induced phospho-p38 MAPK activation and gap junction dysregulation at 30 min. A significant biphasic increase in cPLA2 protein was observed at 30 min, 2, and 4 h, as well as COX2 protein at 2 and 8 h. Untargeted metabolomics demonstrated a similar trend with significantly changing metabolites at 30 min and 4 h of exposure relative to 1 h; a "cPLA2-like" subset of metabolites within the biphasic response were predominately phospholipids. Targeted metabolomics showed several eicosanoids (eg, prostaglandin D2 (PGD2), PGE2α) were significantly increased at 4, 8, and 12 h following exposure to the binary PAH mixture and this effect was p38-dependent. Finally, PAH metabolism was not observed until after 8 h. These results indicate an early lipid signaling mechanism of LMW PAH toxicity in lung epithelial cells due to parent PAH compounds.
Collapse
Affiliation(s)
- Katelyn J Siegrist
- Department of Environmental and Occupational Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - DeeDee Romo
- Department of Environmental and Occupational Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Brad L Upham
- Department of Pediatrics and Human Development, Michigan State University, East Lansing, Michigan
| | - Michael Armstrong
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Kevin Quinn
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Lauren Vanderlinden
- Department of Biostatistics and Informatics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Ross S Osgood
- Department of Environmental and Occupational Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado.,Harvard T.H. Chan School of Public Health, Cambridge
| | - Kalpana Velmurugan
- Department of Environmental and Occupational Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Marc Elie
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Jonathan Manke
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | | | - Nichole Reisdorph
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Laura Saba
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Alison K Bauer
- Department of Environmental and Occupational Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| |
Collapse
|
10
|
Šimečková P, Hubatka F, Kotouček J, Turánek Knötigová P, Mašek J, Slavík J, Kováč O, Neča J, Kulich P, Hrebík D, Stráská J, Pěnčíková K, Procházková J, Diviš P, Macaulay S, Mikulík R, Raška M, Machala M, Turánek J. Gadolinium labelled nanoliposomes as the platform for MRI theranostics: in vitro safety study in liver cells and macrophages. Sci Rep 2020; 10:4780. [PMID: 32179785 PMCID: PMC7075985 DOI: 10.1038/s41598-020-60284-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/18/2019] [Indexed: 12/14/2022] Open
Abstract
Gadolinium (Gd)-based contrast agents are extensively used for magnetic resonance imaging (MRI). Liposomes are potential nanocarrier-based biocompatible platforms for development of new generations of MRI diagnostics. Liposomes with Gd-complexes (Gd-lip) co-encapsulated with thrombolytic agents can serve both for imaging and treatment of various pathological states including stroke. In this study, we evaluated nanosafety of Gd-lip containing PE-DTPA chelating Gd+3 prepared by lipid film hydration method. We detected no cytotoxicity of Gd-lip in human liver cells including cancer HepG2, progenitor (non-differentiated) HepaRG, and differentiated HepaRG cells. Furthermore, no potential side effects of Gd-lip were found using a complex system including general biomarkers of toxicity, such as induction of early response genes, oxidative, heat shock and endoplasmic reticulum stress, DNA damage responses, induction of xenobiotic metabolizing enzymes, and changes in sphingolipid metabolism in differentiated HepaRG. Moreover, Gd-lip did not show pro-inflammatory effects, as assessed in an assay based on activation of inflammasome NLRP3 in a model of human macrophages, and release of eicosanoids from HepaRG cells. In conclusion, this in vitro study indicates potential in vivo safety of Gd-lip with respect to hepatotoxicity and immunopathology caused by inflammation.
Collapse
Affiliation(s)
| | | | - Jan Kotouček
- Veterinary Research Institute, Brno, Czech Republic
| | | | - Josef Mašek
- Veterinary Research Institute, Brno, Czech Republic
| | - Josef Slavík
- Veterinary Research Institute, Brno, Czech Republic
| | - Ondrej Kováč
- Veterinary Research Institute, Brno, Czech Republic
| | - Jiří Neča
- Veterinary Research Institute, Brno, Czech Republic
| | - Pavel Kulich
- Veterinary Research Institute, Brno, Czech Republic
| | - Dominik Hrebík
- Central European Institute of Technology CEITEC, Structural Virology, Masaryk University, Brno, Czech Republic
| | - Jana Stráská
- Regional Centre of Advanced Technologies and Materials, Palacký University, Olomouc, Czech Republic
| | | | | | - Pavel Diviš
- Faculty of Chemistry, Technical University, Brno, Czech Republic
| | | | - Robert Mikulík
- International Clinical Research Centre, St. Anne's University Hospital Brno, Brno, Czech Republic
- Neurology Department, St. Anne's University Hospital and Masaryk University, Brno, Czech Republic
| | - Milan Raška
- Veterinary Research Institute, Brno, Czech Republic
- Department of Immunology, Faculty of Medicine and Dentistry, Palacký University, Olomouc, Czech Republic
| | | | | |
Collapse
|
11
|
Shears RK, Jacques LC, Naylor G, Miyashita L, Khandaker S, Lebre F, Lavelle EC, Grigg J, French N, Neill DR, Kadioglu A. Exposure to diesel exhaust particles increases susceptibility to invasive pneumococcal disease. J Allergy Clin Immunol 2020; 145:1272-1284.e6. [PMID: 31983527 PMCID: PMC7154500 DOI: 10.1016/j.jaci.2019.11.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 11/07/2019] [Accepted: 11/08/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND The World Health Organization estimates that air pollution is responsible for 7 million deaths per annum, with 7% of these attributable to pneumonia. Many of these fatalities have been linked to exposure to high levels of airborne particulates, such as diesel exhaust particles (DEPs). OBJECTIVES We sought to determine whether exposure to DEPs could promote the progression of asymptomatic nasopharyngeal carriage of Streptococcus pneumoniae to invasive pneumococcal disease. METHODS We used mouse models and in vitro assays to provide a mechanistic understanding of the link between DEP exposure and pneumococcal disease risk, and we confirmed our findings by using induced sputum macrophages isolated from healthy human volunteers. RESULTS We demonstrate that inhaled exposure to DEPs disrupts asymptomatic nasopharyngeal carriage of S pneumoniae in mice, leading to dissemination to lungs and blood. Pneumococci are transported from the nasopharynx to the lungs following exposure to DEPs, leading to increased proinflammatory cytokine production, reduced phagocytic function of alveolar macrophages, and consequently, increased pneumococcal loads within the lungs and translocation into blood. These findings were confirmed by using DEP-exposed induced sputum macrophages isolated from healthy volunteers, demonstrating that impaired innate immune mechanisms following DEP exposure are also at play in humans. CONCLUSION Lung inhaled DEPs increase susceptibility to pneumococcal disease by leading to loss of immunological control of pneumococcal colonisation, increased inflammation, tissue damage, and systemic bacterial dissemination.
Collapse
Affiliation(s)
- Rebecca K Shears
- Bacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Laura C Jacques
- Bacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Georgia Naylor
- Bacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Lisa Miyashita
- Centre for Genomics and Child Health, Blizard Institute, Queen Mary University of London, London, United Kingdom
| | - Shadia Khandaker
- Bacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Filipa Lebre
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Ed C Lavelle
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Jonathan Grigg
- Centre for Genomics and Child Health, Blizard Institute, Queen Mary University of London, London, United Kingdom
| | - Neil French
- Bacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Daniel R Neill
- Bacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom; Microbial Evolution, Genomics and Adaptation Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Aras Kadioglu
- Bacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
| |
Collapse
|
12
|
Šimečková P, Marvanová S, Kulich P, Králiková L, Neča J, Procházková J, Machala M. Screening of Cellular Stress Responses Induced by Ambient Aerosol Ultrafine Particle Fraction PM0.5 in A549 Cells. Int J Mol Sci 2019; 20:E6310. [PMID: 31847237 PMCID: PMC6940800 DOI: 10.3390/ijms20246310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/25/2019] [Accepted: 12/11/2019] [Indexed: 12/19/2022] Open
Abstract
Effects of airborne particles on the expression status of markers of cellular toxic stress and on the release of eicosanoids, linked with inflammation and oxidative damage, remain poorly characterized. Therefore, we proposed a set of various methodological approaches in order to address complexity of PM0.5-induced toxicity. For this purpose, we used a well-characterized model of A549 pulmonary epithelial cells exposed to a non-cytotoxic concentration of ambient aerosol particle fraction PM0.5 for 24 h. Electron microscopy confirmed accumulation of PM0.5 within A549 cells, yet, autophagy was not induced. Expression profiles of various cellular stress response genes that have been previously shown to be involved in early stress responses, namely unfolded protein response, DNA damage response, and in aryl hydrocarbon receptor (AhR) and p53 signaling, were analyzed. This analysis revealed induction of GREM1, EGR1, CYP1A1, CDK1A, PUMA, NOXA and GDF15 and suppression of SOX9 in response to PM0.5 exposure. Analysis of eicosanoids showed no oxidative damage and only a weak anti-inflammatory response. In conclusion, this study helps to identify novel gene markers, GREM1, EGR1, GDF15 and SOX9, that may represent a valuable tool for routine testing of PM0.5-induced in vitro toxicity in lung epithelial cells.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Miroslav Machala
- Veterinary Research Institute, Department of Chemistry and Toxicology, Hudcova 296/70, 62100 Brno, Czech Republic; (P.Š.); (S.M.); (P.K.); (L.K.); (J.N.); (J.P.)
| |
Collapse
|
13
|
Zhang W, Li Q, Tang M, Zhang H, Sun X, Zou S, Jensen JL, Liou TG, Zhou A. A multi-scale approach to study biochemical and biophysical aspects of resveratrol on diesel exhaust particle-human primary lung cell interaction. Sci Rep 2019; 9:18178. [PMID: 31796766 DOI: 10.1038/s41598-019-54552-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 11/14/2019] [Indexed: 12/15/2022] Open
Abstract
Diesel exhaust particles (DEPs) are major air pollutants that lead to numerous human disorders, especially pulmonary diseases, partly through the induction of oxidative stress. Resveratrol is a polyphenol that ameliorates the production of reactive oxygen species (ROS) and delays aging-related processes. Herein we studied the cytoprotective effect of resveratrol on DEP-exposed human lung cells in a factorial experimental design. This work investigates biophysical features including cellular compositions and biomechanical properties, which were measured at the single-cell level using confocal Raman microspectroscopy (RM) and atomic force microscopy (AFM), respectively. Principal component analysis (PCA), hierarchical cluster analysis (HCA) and partial least square regression (PLS) analysis were applied to analyze Raman spectra with and without resveratrol protection. The health status of individual cells could be effectively predicted using an index derived from characteristic Raman spectral peak (e.g., 1006 cm−1) based on PLS model. AFM measurements indicated that cellular adhesion force was greatly reduced, while Young’s modulus was highly elevated in resveratrol treated DEP-exposed cells. Anti-oxidant resveratrol reduced DEP-induced ROS production and suppressed releases of several cytokines and chemokines. These findings suggest resveratrol may enhance resistance of human lung cells (e.g., SAEC) to air pollutants (e.g. DEPs).
Collapse
|
14
|
Xu Z, Ding W, Deng X. PM 2.5, Fine Particulate Matter: A Novel Player in the Epithelial-Mesenchymal Transition? Front Physiol 2019; 10:1404. [PMID: 31849690 PMCID: PMC6896848 DOI: 10.3389/fphys.2019.01404] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 10/31/2019] [Indexed: 12/12/2022] Open
Abstract
Epithelial-mesenchymal transition (EMT) refers to the conversion of epithelial cells to mesenchymal phenotype, which endows the epithelial cells with enhanced migration, invasion, and extracellular matrix production abilities. These characteristics link EMT with the pathogenesis of organ fibrosis and cancer progression. Recent studies have preliminarily established that fine particulate matter with an aerodynamic diameter of less than 2.5 μm (PM2.5) is correlated with EMT initiation. In this pathological process, PM2.5 particles, excessive reactive oxygen species (ROS) derived from PM2.5, and certain components in PM2.5, such as ions and polyaromatic hydrocarbons (PAHs), have been implicated as potential EMT mediators that are linked to the activation of transforming growth factor β (TGF-β)/SMADs, NF-κB, growth factor (GF)/extracellular signal-regulated protein kinase (ERK), GF/phosphatidylinositol 3-kinase (PI3K)/Akt, wingless/integrated (Wnt)/β-catenin, Notch, Hedgehog, high mobility group box B1 (HMGB1)-receptor for advanced glycation end-products (RAGE), and aryl hydrocarbon receptor (AHR) signaling cascades and to cytoskeleton rearrangement. These pathways directly and indirectly transduce pro-EMT signals that regulate EMT-related gene expression in epithelial cells, finally inducing the characteristic alterations in morphology and functions of epithelia. In addition, novel associations between autophagy, ATP citrate lyase (ACLY), and exosomes with PM2.5-induced EMT have also been summarized. However, some debates and paradoxes remain to be consolidated. This review discusses the potential molecular mechanisms underlying PM2.5-induced EMT, which might account for the latent role of PM2.5 in cancer progression and fibrogenesis.
Collapse
Affiliation(s)
- Zihan Xu
- Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenjun Ding
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaobei Deng
- Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
15
|
Abstract
Exposure to air pollution and other environmental inhalation hazards, such as occupational exposures to dusts and fumes, aeroallergens, and tobacco smoke, is a significant cause of chronic lung inflammation leading to respiratory disease. It is now recognized that resolution of inflammation is an active process controlled by a novel family of small lipid mediators termed "specialized pro-resolving mediators" or SPMs, derived mainly from dietary omega-3 polyunsaturated fatty acids. Chronic inflammation results from an imbalance between pro-inflammatory and pro-resolution pathways. Research is ongoing to develop SPMs, and the pro-resolution pathway more generally, as a novel therapeutic approach to diseases characterized by chronic inflammation. Here, we will review evidence that the resolution pathway is dysregulated in chronic lung inflammatory diseases, and that SPMs and related molecules have exciting therapeutic potential to reverse or prevent chronic lung inflammation, with a focus on lung inflammation due to inhalation of environmental hazards including urban particulate matter, organic dusts and tobacco smoke.
Collapse
Affiliation(s)
- Thomas H Thatcher
- Division of Pulmonary and Critical Care Medicine, University of Rochester School of Medicine and Dentistry Rochester, NY 14642, United States; Lung Biology and Disease Program, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, United States
| | - Collynn F Woeller
- Lung Biology and Disease Program, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, United States; Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, United States
| | - Claire E McCarthy
- National Cancer Institute, Division of Cancer Biology, 9609 Medical Center Drive, Rockville, MD 20850, United States
| | - Patricia J Sime
- Division of Pulmonary and Critical Care Medicine, University of Rochester School of Medicine and Dentistry Rochester, NY 14642, United States; Lung Biology and Disease Program, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, United States; Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, United States.
| |
Collapse
|
16
|
Rynning I, Arlt VM, Vrbova K, Neča J, Rossner Jr P, Klema J, Ulvestad B, Petersen E, Skare Ø, Haugen A, Phillips DH, Machala M, Topinka J, Mollerup S. Bulky DNA adducts, microRNA profiles, and lipid biomarkers in Norwegian tunnel finishing workers occupationally exposed to diesel exhaust. Occup Environ Med 2019; 76:10-16. [PMID: 30425118 PMCID: PMC6327869 DOI: 10.1136/oemed-2018-105445] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/04/2018] [Accepted: 10/21/2018] [Indexed: 01/27/2023]
Abstract
OBJECTIVES This study aimed to assess the biological impact of occupational exposure to diesel exhaust (DE) including DE particles (DEP) from heavy-duty diesel-powered equipment in Norwegian tunnel finishing workers (TFW). METHODS TFW (n=69) and referents (n=69) were investigated for bulky DNA adducts (by 32P-postlabelling) and expression of microRNAs (miRNAs) (by small RNA sequencing) in peripheral blood mononuclear cells (PBMC), as well as circulating free arachidonic acid (AA) and eicosanoid profiles in plasma (by liquid chromatography-tandem mass spectrometry). RESULTS PBMC from TFW showed significantly higher levels of DNA adducts compared with referents. Levels of DNA adducts were also related to smoking habits. Seventeen miRNAs were significantly deregulated in TFW. Several of these miRNAs are related to carcinogenesis, apoptosis and antioxidant effects. Analysis of putative miRNA-gene targets revealed deregulation of pathways associated with cancer, alterations in lipid molecules, steroid biosynthesis and cell cycle. Plasma profiles showed higher levels of free AA and 15-hydroxyeicosatetraenoic acid, and lower levels of prostaglandin D2 and 9-hydroxyoctadecadienoic acid in TFW compared with referents. CONCLUSION Occupational exposure to DE/DEP is associated with biological alterations in TFW potentially affecting lung homoeostasis, carcinogenesis, inflammation status and the cardiovascular system. Of particular importance is the finding that tunnel finishing work is associated with an increased level of DNA adducts formation in PBMC.
Collapse
Affiliation(s)
- Iselin Rynning
- Section for Toxicology and Biological Work Environment, Department of Chemical and Biological Work Environment, National Institute of Occupational Health, Oslo, Norway
| | - Volker M Arlt
- Department of Analytical, Environmental and Forensic Sciences, MRC-PHE Centre for Environment and Health, King’s College London, London, UK
- NIHR Health Protection Research Unit in Health Impact of Environmental Hazards at King’s College London in Partnership with Public Health England and Imperial College London, London, UK
| | - Kristyna Vrbova
- Department of Genetic Toxicology and Nanotoxicology, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jiří Neča
- Department of Chemistry and Toxicology, Veterinary Research Institute, Brno, Czech Republic
| | - Pavel Rossner Jr
- Department of Genetic Toxicology and Nanotoxicology, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jiri Klema
- Department of Computer Science, Czech Technical University in Prague, Prague, Czech Republic
| | - Bente Ulvestad
- Department of Occupational Medicine and Epidemiology, National Institute of Occupational Health, Oslo, Norway
| | - Elisabeth Petersen
- Department of Work Psychology and Physiology, National Institute of Occupational Health, Oslo, Norway
| | - Øivind Skare
- Department of Occupational Medicine and Epidemiology, National Institute of Occupational Health, Oslo, Norway
| | - Aage Haugen
- Section for Toxicology and Biological Work Environment, Department of Chemical and Biological Work Environment, National Institute of Occupational Health, Oslo, Norway
| | - David H Phillips
- Department of Analytical, Environmental and Forensic Sciences, MRC-PHE Centre for Environment and Health, King’s College London, London, UK
- NIHR Health Protection Research Unit in Health Impact of Environmental Hazards at King’s College London in Partnership with Public Health England and Imperial College London, London, UK
| | - Miroslav Machala
- Department of Chemistry and Toxicology, Veterinary Research Institute, Brno, Czech Republic
| | - Jan Topinka
- Department of Genetic Toxicology and Nanotoxicology, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic
| | - Steen Mollerup
- Section for Toxicology and Biological Work Environment, Department of Chemical and Biological Work Environment, National Institute of Occupational Health, Oslo, Norway
| |
Collapse
|