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Zhang J, Li Y, Zhu F, Guo X, Huang Y. Time-/dose- series transcriptome data analysis and traditional Chinese medicine treatment of pneumoconiosis. Int J Biol Macromol 2024; 267:131515. [PMID: 38614165 DOI: 10.1016/j.ijbiomac.2024.131515] [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] [Received: 02/03/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 04/15/2024]
Abstract
Pneumoconiosis' pathogenesis is still unclear and specific drugs for its treatment are lacking. Analysis of series transcriptome data often uses a single comparison method, and there are few reports on using such data to predict the treatment of pneumoconiosis with traditional Chinese medicine (TCM). Here, we proposed a new method for analyzing series transcriptomic data, series difference analysis (SDA), and applied it to pneumoconiosis. By comparison with 5 gene sets including existing pneumoconiosis-related genes and gene set functional enrichment analysis, we demonstrated that the new method was not inferior to two existing traditional analysis methods. Furthermore, based on the TCM-drug target interaction network, we predicted the TCM corresponding to the common pneumoconiosis-related genes obtained by multiple methods, and combined them with the high-frequency TCM for its treatment obtained through literature mining to form a new TCM formula for it. After feeding it to pneumoconiosis modeling mice for two months, compared with the untreated group, the coat color, mental state and tissue sections of the mice in the treated group were markedly improved, indicating that the new TCM formula has a certain efficacy. Our study provides new insights into method development for series transcriptomic data analysis and treatment of pneumoconiosis.
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Affiliation(s)
- Jifeng Zhang
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China; School of Biological Engineering & Institute of Digital Ecology and Health, Huainan Normal University, Huainan, China
| | - Yaobin Li
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China.
| | - Fenglin Zhu
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Xiaodi Guo
- School of Biological Engineering & Institute of Digital Ecology and Health, Huainan Normal University, Huainan, China
| | - Yuqing Huang
- School of Biological Engineering & Institute of Digital Ecology and Health, Huainan Normal University, Huainan, China
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2
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Morin L, Lecureur V, Lescoat A. Results from omic approaches in rat or mouse models exposed to inhaled crystalline silica: a systematic review. Part Fibre Toxicol 2024; 21:10. [PMID: 38429797 PMCID: PMC10905840 DOI: 10.1186/s12989-024-00573-x] [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] [Received: 11/23/2022] [Accepted: 02/26/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Crystalline silica (cSiO2) is a mineral found in rocks; workers from the construction or denim industries are particularly exposed to cSiO2 through inhalation. cSiO2 inhalation increases the risk of silicosis and systemic autoimmune diseases. Inhaled cSiO2 microparticles can reach the alveoli where they induce inflammation, cell death, auto-immunity and fibrosis but the specific molecular pathways involved in these cSiO2 effects remain unclear. This systematic review aims to provide a comprehensive state of the art on omic approaches and exposure models used to study the effects of inhaled cSiO2 in mice and rats and to highlight key results from omic data in rodents also validated in human. METHODS The protocol of systematic review follows PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Eligible articles were identified in PubMed, Embase and Web of Science. The search strategy included original articles published after 1990 and written in English which included mouse or rat models exposed to cSiO2 and utilized omic approaches to identify pathways modulated by cSiO2. Data were extracted and quality assessment was based on the SYRCLE's Risk of Bias tool for animal studies. RESULTS Rats and male rodents were the more used models while female rodents and autoimmune prone models were less studied. Exposure of animals were both acute and chronic and the timing of outcome measurement through omics approaches were homogeneously distributed. Transcriptomic techniques were more commonly performed while proteomic, metabolomic and single-cell omic methods were less utilized. Immunity and inflammation were the main domains modified by cSiO2 exposure in lungs of mice and rats. Less than 20% of the results obtained in rodents were finally verified in humans. CONCLUSION Omic technics offer new insights on the effects of cSiO2 exposure in mice and rats although the majority of data still need to be validated in humans. Autoimmune prone model should be better characterised and systemic effects of cSiO2 need to be further studied to better understand cSiO2-induced autoimmunity. Single-cell omics should be performed to inform on pathological processes induced by cSiO2 exposure.
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Affiliation(s)
- Laura Morin
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en sante, environnement et travail), UMR_S 1085, 35000, Rennes, France
| | - Valérie Lecureur
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en sante, environnement et travail), UMR_S 1085, 35000, Rennes, France.
| | - Alain Lescoat
- Univ Rennes, CHU Rennes, INSERM, EHESP, IRSET (Institut de recherche en sante, environnement et travail), UMR_S 1085, 35000, Rennes, France
- Department of Internal Medicine, Rennes University Hospital, 35000, Rennes, France
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Valentino SA, Seidel C, Lorcin M, Sébillaud S, Wolff H, Grossmann S, Viton S, Nunge H, Saarimäki LA, Greco D, Cosnier F, Gaté L. Identification of a Gene Signature Predicting (Nano)Particle-Induced Adverse Lung Outcome in Rats. Int J Mol Sci 2023; 24:10890. [PMID: 37446067 DOI: 10.3390/ijms241310890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/26/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Nanoparticles are extensively used in industrial products or as food additives. However, despite their contribution to improving our quality of life, concerns have been raised regarding their potential impact on occupational and public health. To speed up research assessing nanoparticle-related hazards, this study was undertaken to identify early markers of harmful effects on the lungs. Female Sprague Dawley rats were either exposed to crystalline silica DQ-12 with instillation, or to titanium dioxide P25, carbon black Printex-90, or multi-walled carbon nanotube Mitsui-7 with nose-only inhalation. Tissues were collected at three post-exposure time points to assess short- and long-term effects. All particles induced lung inflammation. Histopathological and biochemical analyses revealed phospholipid accumulation, lipoproteinosis, and interstitial thickening with collagen deposition after exposure to DQ-12. Exposure to the highest dose of Printex-90 and Mitsui-7, but not P25, induced some phospholipid accumulation. Comparable histopathological changes were observed following exposure to P25, Printex-90, and Mitsui-7. Comparison of overall gene expression profiles identified 15 potential early markers of adverse lung outcomes induced by spherical particles. With Mitsui-7, a distinct gene expression signature was observed, suggesting that carbon nanotubes trigger different toxicity mechanisms to spherical particles.
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Affiliation(s)
- Sarah Amandine Valentino
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, 1 Rue du Morvan, F-54519 Vandœuvre-lès-Nancy, France
| | - Carole Seidel
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, 1 Rue du Morvan, F-54519 Vandœuvre-lès-Nancy, France
| | - Mylène Lorcin
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, 1 Rue du Morvan, F-54519 Vandœuvre-lès-Nancy, France
| | - Sylvie Sébillaud
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, 1 Rue du Morvan, F-54519 Vandœuvre-lès-Nancy, France
| | - Henrik Wolff
- Finnish Institute of Occupational Health, FI-00251 Helsinki, Finland
| | - Stéphane Grossmann
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, 1 Rue du Morvan, F-54519 Vandœuvre-lès-Nancy, France
| | - Stéphane Viton
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, 1 Rue du Morvan, F-54519 Vandœuvre-lès-Nancy, France
| | - Hervé Nunge
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, 1 Rue du Morvan, F-54519 Vandœuvre-lès-Nancy, France
| | - Laura Aliisa Saarimäki
- Finnish Hub for Development and Validation of Integrated Approaches (FHAIVE), Faculty of Medicine and Health Technology, Tampere University, FI-33520 Tampere, Finland
| | - Dario Greco
- Finnish Hub for Development and Validation of Integrated Approaches (FHAIVE), Faculty of Medicine and Health Technology, Tampere University, FI-33520 Tampere, Finland
- Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, FI-00100 Helsinki, Finland
| | - Frédéric Cosnier
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, 1 Rue du Morvan, F-54519 Vandœuvre-lès-Nancy, France
| | - Laurent Gaté
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, 1 Rue du Morvan, F-54519 Vandœuvre-lès-Nancy, France
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4
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Hadrup N, Sahlgren N, Jacobsen NR, Saber AT, Hougaard KS, Vogel U, Jensen KA. Toxicity dose descriptors from animal inhalation studies of 13 nanomaterials and their bulk and ionic counterparts and variation with primary particle characteristics. Nanotoxicology 2023:1-34. [PMID: 37300873 DOI: 10.1080/17435390.2023.2221728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 05/28/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023]
Abstract
This study collects toxicity data from animal inhalation studies of some nanomaterials and their bulk and ionic counterparts. To allow potential grouping and interpretations, we retrieved the primary physicochemical and exposure data to the extent possible for each of the materials. Reviewed materials are compounds (mainly elements, oxides and salts) of carbon (carbon black, carbon nanotubes, and graphene), silver, cerium, cobalt, copper, iron, nickel, silicium (amorphous silica and quartz), titanium (titanium dioxide), and zinc (chemical symbols: Ag, C, Ce, Co, Cu, Fe, Ni, Si, Ti, TiO2, and Zn). Collected endpoints are: a) pulmonary inflammation, measured as neutrophils in bronchoalveolar lavage (BAL) fluid at 0-24 hours after last exposure; and b) genotoxicity/carcinogenicity. We present the dose descriptors no-observed-adverse-effect concentrations (NOAECs) and lowest-observed-adverse-effect concentrations (LOAECs) for 88 nanomaterial investigations in data-library and graph formats. We also calculate 'the value where 25% of exposed animals develop tumors' (T25) for carcinogenicity studies. We describe how the data may be used for hazard assessment of the materials using carbon black as an example. The collected data also enable hazard comparison between different materials. An important observation for poorly soluble particles is that the NOAEC for neutrophil numbers in general lies around 1 to 2 mg/m3. We further discuss why some materials' dose descriptors deviate from this level, likely reflecting the effects of the ionic form and effects of the fiber-shape. Finally, we discuss that long-term studies, in general, provide the lowest dose descriptors, and dose descriptors are positively correlated with particle size for near-spherical materials.
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Affiliation(s)
- Niels Hadrup
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
- Research group for risk-benefit, National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - Nicklas Sahlgren
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
| | - Nicklas R Jacobsen
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
| | - Anne T Saber
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
| | - Karin S Hougaard
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Ulla Vogel
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - Keld A Jensen
- National Research Centre for the Working Environment (NFA), Copenhagen, Denmark
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5
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Tian Y, Yu B, Zhang Y, Zhang S, Lv B, Gong S, Li J. Exploration of the potential common pathogenic mechanisms in COVID-19 and silicosis by using bioinformatics and system biology. Funct Integr Genomics 2023; 23:199. [PMID: 37278873 PMCID: PMC10241611 DOI: 10.1007/s10142-023-01092-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 06/07/2023]
Abstract
Silicosis is an occupational lung disease that is common worldwide. In recent years, coronavirus disease 2019 (COVID-19) has provided daunting challenges to public healthcare systems globally. Although multiple studies have shown a close link between COVID-19 and other respiratory diseases, the inter-relational mechanisms between COVID-19 and silicosis remain unclear. This study aimed to explore the shared molecular mechanisms and drug targets of COVID-19 and silicosis. Gene expression profiling identified four modules that were most closely associated with both diseases. Furthermore, we performed functional analysis and constructed a protein-protein interaction network. Seven hub genes (budding uninhibited by benzimidazoles 1 [BUB1], protein regulator of cytokinesis 1 [PRC1], kinesin family member C1 [KIFC1], ribonucleotide reductase regulatory subunit M2 [RRM2], cyclin-dependent kinase inhibitor 3 [CDKN3], Cyclin B2 [CCNB2], and minichromosome maintenance complex component 6 [MCM6]) were involved in the interaction between COVID-19 and silicosis. We investigated how diverse microRNAs and transcription factors regulate these seven genes. Subsequently, the correlation between the hub genes and infiltrating immune cells was explored. Further in-depth analyses were performed based on single-cell transcriptomic data from COVID-19, and the expression of hub-shared genes was characterized and located in multiple cell clusters. Finally, molecular docking results reveal small molecular compounds that may improve COVID-19 and silicosis. The current study reveals the common pathogenesis of COVID-19 and silicosis, which may provide a novel reference for further research.
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Affiliation(s)
- Yunze Tian
- Department of Thoracic Surgery, the Second Affiliated Hospital of Xi'an Jiao Tong University, Shaanxi Province, Xi'an, 710004, China
- Department of Neurosurgery, the Second Affiliated Hospital of Xi'an Jiao Tong University, Shaanxi Province, Xi'an, 710004, China
| | - Beibei Yu
- Department of Neurosurgery, the Second Affiliated Hospital of Xi'an Jiao Tong University, Shaanxi Province, Xi'an, 710004, China
| | - Yongfeng Zhang
- Department of Neurosurgery, the Second Affiliated Hospital of Xi'an Jiao Tong University, Shaanxi Province, Xi'an, 710004, China
| | - Sanpeng Zhang
- Operating room, the Second Affiliated Hospital of Xi'an Jiao Tong University, Shaanxi Province, 710004, Xi'an, China
| | - Boqiang Lv
- Department of Neurosurgery, the Second Affiliated Hospital of Xi'an Jiao Tong University, Shaanxi Province, Xi'an, 710004, China
| | - Shouping Gong
- Department of Neurosurgery, the Second Affiliated Hospital of Xi'an Jiao Tong University, Shaanxi Province, Xi'an, 710004, China.
| | - Jianzhong Li
- Department of Thoracic Surgery, the Second Affiliated Hospital of Xi'an Jiao Tong University, Shaanxi Province, Xi'an, 710004, China.
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6
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Horie M, Kato H, Nakamura A, Kadota Y, Izumi N. Evaluation of the cellular effects of silica particles used for dermal application. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2023; 86:326-345. [PMID: 37016508 DOI: 10.1080/15287394.2023.2198577] [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: 05/26/2023]
Abstract
The cellular effects of 5 types of spherical amorphous silica particles whose particle size were 4.2-12.8 μm for cosmetic use and two types of crystalline silica whose particle size were 2.4 and 7.1 μm particles for industrial use were examined. These silica particles were applied to HaCaT human keratinocytes for 24 hr. Crystalline silica enhanced IL-8 and IL-6 expression and caused cell membrane damage. Crystalline silica also enhanced HO-1 gene expression; however, the level of intracellular ROS did not change. Compared with crystalline silica, the cellular effects of the spherical silica employed in this study were minor. Cellular uptake of particles was observed for all of silica particle types. Cellular uptake of crystalline silica was observed 1 hr after exposure, and internalized silica particles were present in the cytoplasm. When HaCaT cells were exposed to crystalline silica for 1 hr and incubated for 23 hr in culture medium without silica particles, IL-8 expression was still detected. In addition, silica particles exerted negligible effects using a 3D skin tissue model. Thus, the following conclusions may be drawn. (1) cellular effects exerted by spherical silica are less compared to crystalline silica. (2) phagocytosis of particles is an important first step in the cellular effects of silica particles. (3) spherical silica particles might exert little, if any, effect on healthy skin attributed to no apparent cellular uptake.
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Affiliation(s)
- Masanori Horie
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Takamatsu, Kagawa, Japan
| | - Haruhisa Kato
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Ayako Nakamura
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Yutaka Kadota
- CSR Division, AGC-Si-Tech Co. Ltd, Kitakyushu, Fukuoka, Japan
| | - Naoyuki Izumi
- CSR Division, AGC-Si-Tech Co. Ltd, Kitakyushu, Fukuoka, Japan
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Shoeb M, Meier HCS, Antonini JM. Telomeres in toxicology: Occupational health. Pharmacol Ther 2021; 220:107742. [PMID: 33176178 PMCID: PMC7969441 DOI: 10.1016/j.pharmthera.2020.107742] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/03/2020] [Indexed: 12/24/2022]
Abstract
The ends of chromosomes shorten at each round of cell division, and this process is thought to be affected by occupational exposures. Occupational hazards may alter telomere length homeostasis resulting in DNA damage, chromosome aberration, mutations, epigenetic alterations and inflammation. Therefore, for the protection of genetic material, nature has provided a unique nucleoprotein structure known as a telomere. Telomeres provide protection by averting an inappropriate activation of the DNA damage response (DDR) at chromosomal ends and preventing recognition of single and double strand DNA (ssDNA and dsDNA) breaks or chromosomal end-to-end fusion. Telomeres and their interacting six shelterin complex proteins in coordination act as inhibitors of DNA damage machinery by blocking DDR activation at chromosomes, thereby preventing the occurrence of genome instability, perturbed cell cycle, cellular senescence and apoptosis. However, inappropriate DNA repair may result in the inadequate distribution of genetic material during cell division, resulting in the eventual development of tumorigenesis and other pathologies. This article reviews the current literature on the association of changes in telomere length and its interacting proteins with different occupational exposures and the potential application of telomere length or changes in the regulatory proteins as potential biomarkers for exposure and health response, including recent findings and future perspectives.
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Affiliation(s)
- Mohammad Shoeb
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, United States of America.
| | - Helen C S Meier
- Joseph J. Zilber School of Public Health, University of Wisconsin, Milwaukee, WI, United States of America
| | - James M Antonini
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, United States of America
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8
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Zhao H, Jiang Z, Lv R, Li X, Xing Y, Gao Y, Lv D, Si Y, Wang J, Li J, Zhao X, Cai L. Transcriptome profile analysis reveals a silica-induced immune response and fibrosis in a silicosis rat model. Toxicol Lett 2020; 333:42-48. [PMID: 32721576 DOI: 10.1016/j.toxlet.2020.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/17/2020] [Accepted: 07/23/2020] [Indexed: 12/31/2022]
Abstract
Silicosis is a type of pneumoconiosis caused by the inhalation of silica dust. It is characterized by inflammation and fibrosis of the lung. Although many studies have reported that crystalline silica-inhalation into the lung initiates the immune response, activating effector cells and triggering the inflammatory cascade with subsequent elaboration of the extracellular matrix and fibrosis, the mechanism of silicosis pathogenesis remains unclear. In the present study, we established a silica inhalation-induced silicosis rat model validated by histological and cytokine analyses. RNA-seq and bioinformatic analyses showed that 600 genes were upregulated and 537 genes were downregulated in the silica-treated group. GO enrichment analysis indicates that these differentially expressed genes are enriched in several biological processes including immune response and organism remodeling. KEGG enrichment analysis showed that 53 enriched pathways were mainly associated with human diseases, immune response, signal transduction, and fibrosis process. Since alternative splicing of pre-mRNAs is also essential for the regulation of gene expression, we identified several alternative pre-mRNA splicing events in the fibrotic process. This study will provide a foundation to understand the molecular mechanism of the pulmonary fibrosis caused by silica.
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Affiliation(s)
- Hongyu Zhao
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China; Inner Mongolia Key Laboratory of Functional Genome Bioinformatics, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Zhiyan Jiang
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China; Inner Mongolia Key Laboratory of Functional Genome Bioinformatics, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Runchao Lv
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Xue Li
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Yongqiang Xing
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China; Inner Mongolia Key Laboratory of Functional Genome Bioinformatics, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Yanrong Gao
- School of Public Health, Baotou Medical College, Baotou, 014010, China
| | - Da Lv
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Yangming Si
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Jingyan Wang
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China; Inner Mongolia Key Laboratory of Functional Genome Bioinformatics, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Jun Li
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China; Inner Mongolia Key Laboratory of Functional Genome Bioinformatics, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Xiujuan Zhao
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China; Inner Mongolia Key Laboratory of Functional Genome Bioinformatics, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Lu Cai
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, China; Inner Mongolia Key Laboratory of Functional Genome Bioinformatics, Inner Mongolia University of Science and Technology, Baotou, 014010, China.
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9
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Mandler WK, Qi C, Orandle MS, Sarkisian K, Mercer RR, Stefaniak AB, Knepp AK, Bowers LN, Battelli LA, Shaffer J, Friend SA, Qian Y, Sisler JD. Mouse pulmonary response to dust from sawing Corian®, a solid-surface composite material. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:645-663. [PMID: 31290376 DOI: 10.1080/15287394.2019.1640816] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Corian®, a solid-surface composite (SSC), is composed of alumina trihydrate and acrylic polymer. The aim of the present study was to examine the pulmonary toxicity attributed to exposure to SSC sawing dust. Male mice were exposed to either phosphate buffer saline (PBS, control), 62.5, 125, 250, 500, or 1000 µg of SSC dust, or 1000 µg silica (positive control) via oropharyngeal aspiration. Body weights were measured for the duration of the study. Bronchoalveolar lavage fluid (BALF) and tissues were collected for analysis at 1 and 14 days post-exposure. Enhanced-darkfield and histopathologic analysis was performed to assess particle distribution and inflammatory responses. BALF cells and inflammatory cytokines were measured. The geometric mean diameter of SSC sawing dust following suspension in PBS was 1.25 µm. BALF analysis indicated that lactate dehydrogenase (LDH) activity, inflammatory cells, and pro-inflammatory cytokines were significantly elevated in the 500 and 1000 µg SSC exposure groups at days 1 and 14, suggesting that exposure to these concentrations of SSC induced inflammatory responses, in some cases to a greater degree than the silica positive control. Histopathology indicated the presence of acute alveolitis at all doses at day 1, which was largely resolved by day 14. Alveolar particle deposition and granulomatous mass formation were observed in all exposure groups at day 14. The SSC particles were poorly cleared, with 81% remaining at the end of the observation period. These findings demonstrate that SSC sawing dust exposure induces pulmonary inflammation and damage that warrants further investigation. Abbreviations: ANOVA: Analysis of Variance; ATH: Alumina Trihydrate; BALF: Bronchoalveolar Lavage Fluid; Dpg: Geometric Mean Diameter; FE-SEM: Field Emission Scanning Electron Microscopy; IACUC: Institutional Animal Care and Use Committee; IFN-γ: Interferon Gamma; IL-1 Β: Interleukin-1 Beta; IL-10: Interleukin-10; IL-12: Interleukin-12; IL-2: Interleukin-2; IL-4: Interleukin-4; IL-5: Interleukin-5; IL-6: Interleukin-6; KC/GRO: Neutrophil-Activating Protein 3; MMAD: Mass Median Aerodynamic Diameter; PBS: Phosphate-Buffered Saline; PEL: Permissible Exposure Limit; PM: Polymorphonuclear Leukocytes; PNOR: Particles Not Otherwise Regulated; SEM/EDX: Scanning Electron Microscope/Energy-Dispersive X-Ray; SSA: Specific Surface Area; SSC: Solid Surface Composite; TNFα: Tumor Necrosis Factor-Alpha; VOC: Volatile Organic Compounds; σg: Geometric Standard Deviation.
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Affiliation(s)
- W Kyle Mandler
- a Health Effects Laboratory Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Chaolong Qi
- b Division of Applied Research, National Institute for Occupational Safety and Health , Cincinnati , OH , USA
| | - Marlene S Orandle
- a Health Effects Laboratory Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Khachatur Sarkisian
- a Health Effects Laboratory Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Robert R Mercer
- a Health Effects Laboratory Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Aleksandr B Stefaniak
- c Respiratory Health Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Alycia K Knepp
- c Respiratory Health Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Lauren N Bowers
- c Respiratory Health Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Lori A Battelli
- a Health Effects Laboratory Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Justine Shaffer
- a Health Effects Laboratory Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Sherri A Friend
- a Health Effects Laboratory Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Yong Qian
- a Health Effects Laboratory Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - Jennifer D Sisler
- a Health Effects Laboratory Division, National Institute for Occupational Safety and Health , Morgantown , WV , USA
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10
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Warheit-Niemi HI, Hult EM, Moore BB. A pathologic two-way street: how innate immunity impacts lung fibrosis and fibrosis impacts lung immunity. Clin Transl Immunology 2019; 8:e1065. [PMID: 31293783 PMCID: PMC6593479 DOI: 10.1002/cti2.1065] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/29/2019] [Accepted: 06/06/2019] [Indexed: 12/11/2022] Open
Abstract
Lung fibrosis is characterised by the accumulation of extracellular matrix within the lung and is secondary to both known and unknown aetiologies. This accumulation of scar tissue limits gas exchange causing respiratory insufficiency. The pathogenesis of lung fibrosis is poorly understood, but immunologic‐based treatments have been largely ineffective. Despite this, accumulating evidence suggests that innate immune cells and receptors play important modulatory roles in the initiation and propagation of the disease. Paradoxically, while innate immune signalling may be important for the pathogenesis of fibrosis, there is also evidence to suggest that innate immune function against pathogens may be impaired, leading to dysregulated and/or impaired host defence. This review summarises the evidence for this pathologic two‐way street, highlights new concepts of pathogenesis and recommends future directions for research emphasis.
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Affiliation(s)
| | - Elissa M Hult
- Department of Molecular and Integrative Physiology University of Michigan Ann Arbor MI USA
| | - Bethany B Moore
- Department of Microbiology and Immunology University of Michigan Ann Arbor MI USA.,Department of Internal Medicine Division of Pulmonary and Critical Care Medicine University of Michigan Ann Arbor MI USA
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11
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Shoeb M, Mustafa GM, Joseph P, Umbright C, Kodali V, Roach KA, Meighan T, Roberts JR, Erdely A, Antonini JM. Initiation of Pulmonary Fibrosis after Silica Inhalation in Rats is linked with Dysfunctional Shelterin Complex and DNA Damage Response. Sci Rep 2019; 9:471. [PMID: 30679488 PMCID: PMC6346028 DOI: 10.1038/s41598-018-36712-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 11/19/2018] [Indexed: 12/16/2022] Open
Abstract
Occupational exposure to silica has been observed to cause pulmonary fibrosis and lung cancer through complex mechanisms. Telomeres, the nucleoprotein structures with repetitive (TTAGGG) sequences at the end of chromosomes, are a molecular "clock of life", and alterations are associated with chronic disease. The shelterin complex (POT1, TRF1, TRF2, Tin2, Rap1, and POT1 and TPP1) plays an important role in maintaining telomere length and integrity, and any alteration in telomeres may activate DNA damage response (DDR) machinery resulting in telomere attrition. The goal of this study was to assess the effect of silica exposure on the regulation of the shelterin complex in an animal model. Male Fisher 344 rats were exposed by inhalation to Min-U-Sil 5 silica for 3, 6, or 12 wk at a concentration of 15 mg/m3 for 6 hr/d for 5 consecutive d/wk. Expression of shelterin complex genes was assessed in the lungs at 16 hr after the end of each exposure. Also, the relationship between increased DNA damage protein (γH2AX) and expression of silica-induced fibrotic marker, αSMA, was evaluated. Our findings reveal new information about the dysregulation of shelterin complex after silica inhalation in rats, and how this pathway may lead to the initiation of silica-induced pulmonary fibrosis.
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Affiliation(s)
- Mohammad Shoeb
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA.
| | - Gul M Mustafa
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - Pius Joseph
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - Christina Umbright
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - Vamsi Kodali
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - Katherine A Roach
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - Terence Meighan
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - Jenny R Roberts
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - Aaron Erdely
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - James M Antonini
- Centers for Disease Control and Prevention, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
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12
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Wultsch G, Nersesyan A, Kundi M, Al-Serori H, Knasmüller S. Induction of chromosomal damage in exfoliated buccal and nasal cells of road markers. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:969-976. [PMID: 31596695 DOI: 10.1080/15287394.2019.1673578] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Road markers are exposed to various chemicals and particles. The aim of this study was to determine whether road worker exposure induceschromosomal damage which is indicative for increased cancer risks. Micronucleus (MN) cytome assays were thus conducted with exfoliated nasal and buccal cells collected from 42 workers and 42 matched controls. The frequencies of MN (reflecting chromosomal aberrations), nuclear buds (NBuds; reflecting gene amplifications) and binucleated cells (BN; reflecting disturbed mitosis) were scored. Further, the rates of nuclear anomalies indicative of acute cytotoxicity (condensed chromatin, karyorrhexis, karyolysis, pyknosis) were evaluated. Data demonstrated marked induction of MN, NBuds, and BN by 1.34-fold, 1.24-fold and 1.14-fold in buccal cells. In nasal cells, only MN frequencies were elevated, 1.23-fold. These effects were paralleled by increased rates of condensed chromatin, karyorrhexis and karyolysis in both cell types. The effects were more pronounced in individuals who had worked for more than 10 years while smoking did not produce synergistic responses. This is the first investigation concerning the induction of genetic damage in road markers and the results are suggestive for enhanced cancer risks. It is conceivable that exposure to silica dust (known to induce cancer and genetic damage) and/or benzoyl peroxide which forms reactive radicals may be associated with the observed genetic damage in road workers. Further investigations of the cancer risks of these workers are warranted.
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Affiliation(s)
- Georg Wultsch
- Institute of Cancer Research, Medical University of Vienna , Vienna , Austria
| | - Armen Nersesyan
- Institute of Cancer Research, Medical University of Vienna , Vienna , Austria
- Center for Public Health, Medical University of Vienna , Vienna , Austria
| | - Michael Kundi
- Institute of Cancer Research, Medical University of Vienna , Vienna , Austria
| | - Halh Al-Serori
- Institute of Cancer Research, Medical University of Vienna , Vienna , Austria
- Department of Analytical, Environmental and Forensic Sciences, MRC-PHE Centre for Environment and Health, King's College , London , UK
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13
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Benedikter BJ, Wouters EFM, Savelkoul PHM, Rohde GGU, Stassen FRM. Extracellular vesicles released in response to respiratory exposures: implications for chronic disease. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2018; 21:142-160. [PMID: 29714636 DOI: 10.1080/10937404.2018.1466380] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Extracellular vesicles (EV) are secreted signaling entities that enhance various pathological processes when released in response to cellular stresses. Respiratory exposures such as cigarette smoke and air pollution exert cellular stresses and are associated with an increased risk of several chronic diseases. The aim of this review was to examine the evidence that modifications in EV contribute to respiratory exposure-associated diseases. Publications were searched using PubMed and Google Scholar with the search terms (cigarette smoke OR tobacco smoke OR air pollution OR particulate matter) AND (extracellular vesicles OR exosomes OR microvesicles OR microparticles OR ectosomes). All original research articles were included and reviewed. Fifty articles were identified, most of which investigated the effect of respiratory exposures on EV release in vitro (25) and/or on circulating EV in human plasma (24). The majority of studies based their main observations on the relatively insensitive scatter-based flow cytometry of EV (29). EV induced by respiratory exposures were found to modulate inflammation (19), thrombosis (13), endothelial dysfunction (11), tissue remodeling (6), and angiogenesis (3). By influencing these processes, EV may play a key role in the development of cardiovascular diseases and chronic obstructive pulmonary disease and possibly lung cancer and allergic asthma. The current findings warrant additional research with improved methodologies to evaluate the contribution of respiratory exposure-induced EV to disease etiology, as well as their potential as biomarkers of exposure or risk and as novel targets for preventive or therapeutic strategies.
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Affiliation(s)
- Birke J Benedikter
- a Department of Medical Microbiology , NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center , Maastricht , The Netherlands
- b Department of Respiratory Medicine , NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center , Maastricht , The Netherlands
| | - Emiel F M Wouters
- b Department of Respiratory Medicine , NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center , Maastricht , The Netherlands
| | - Paul H M Savelkoul
- a Department of Medical Microbiology , NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center , Maastricht , The Netherlands
- c Department of Medical Microbiology & Infection Control , VU University Medical Center , Amsterdam , The Netherlands
| | - Gernot G U Rohde
- d Medical clinic I, Department of Respiratory Medicine , Goethe University Hospital , Frankfurt/Main , Germany
| | - Frank R M Stassen
- a Department of Medical Microbiology , NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center , Maastricht , The Netherlands
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14
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Jo GH, Kim SN, Kim MJ, Heo Y. Protective effect of Paeoniae radix alba root extract on immune alterations in mice with atopic dermatitis. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:502-511. [PMID: 29630468 DOI: 10.1080/15287394.2018.1460785] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Atopic dermatitis is a progressive inflammatory disease characterized by type 2 helper T cell (TH2) reactivity. The aim of this study was to examine the therapeutic effects of Paeoniae radix alba root extract using a murine model of atopic dermatitis. Atopic dermatitis was induced in a murine model characterized by immune alterations skewed toward TH2 reactivity and pathophysiological dermal alterations which resemble human atopic dermatitis. The root extract at 1% or 6% was applied to the mouse dorsal skin for 3 weeks following induction of atopic dermatitis. Splenocytes were stimulated with immobilized anti-CD3 for 48 h to measure cytokine production. Levels of serum IgE, IgG1, and IgG2a were quantitated. Epidermal thickness and numbers of skin mast cells were determined. Mice in which atopic dermatitis was induced displayed increased numbers of skin mast cells, increased frequency of scratching, elevated serum IgE levels, increased ratios of IgG1 to IgG2a, and ratios of IL-4 to IFN-γ. The frequency of scratching was significantly decreased following application of 1% or 6% extract for 1 week. The root extract also reversed TH2 skewing, as serum IgE levels, ratio of serum IgG1 to IgG2a, and ratio of IL-4 to IFN-γ production by in vitro-stimulated splenocytes were all suppressed following application of 1% or 6% extract for 3 weeks. Taken together Paeoniae radix alba root extract is suggested to reverse the immunological alterations and skin manifestations symptoms found in atopic dermatitis.
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Affiliation(s)
- Gwang-Ho Jo
- a Department of Laboratory Medicine , Daegu Fatima Hospital , Daegu , Republic of Korea
- b Department of Occupational Health , College of Bio-Medical Sciences, Daegu Catholic University , Daegu , Republic of Korea
| | - So-Nam Kim
- b Department of Occupational Health , College of Bio-Medical Sciences, Daegu Catholic University , Daegu , Republic of Korea
| | - Mun-Ja Kim
- c Department of Laboratory Medicine, Hematopoietic Stem Cell Bank, Yeungnam University Medical Center , Daegu , Republic of Korea
| | - Yong Heo
- b Department of Occupational Health , College of Bio-Medical Sciences, Daegu Catholic University , Daegu , Republic of Korea
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15
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Stueckle TA, Davidson DC, Derk R, Kornberg TG, Battelli L, Friend S, Orandle M, Wagner A, Dinu CZ, Sierros KA, Agarwal S, Gupta RK, Rojanasakul Y, Porter DW, Rojanasakul L. Short-Term Pulmonary Toxicity Assessment of Pre- and Post-incinerated Organomodified Nanoclay in Mice. ACS NANO 2018; 12:2292-2310. [PMID: 29451776 PMCID: PMC6357971 DOI: 10.1021/acsnano.7b07281] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Organomodified nanoclays (ONCs) are increasingly used as filler materials to improve nanocomposite strength, wettability, flammability, and durability. However, pulmonary risks associated with exposure along their chemical lifecycle are unknown. This study's objective was to compare pre- and post-incinerated forms of uncoated and organomodified nanoclays for potential pulmonary inflammation, toxicity, and systemic blood response. Mice were exposed via aspiration to low (30 μg) and high (300 μg) doses of preincinerated uncoated montmorillonite nanoclay (CloisNa), ONC (Clois30B), their respective incinerated forms (I-CloisNa and I-Clois30B), and crystalline silica (CS). Lung and blood tissues were collected at days 1, 7, and 28 to compare toxicity and inflammation indices. Well-dispersed CloisNa caused a robust inflammatory response characterized by neutrophils, macrophages, and particle-laden granulomas. Alternatively, Clois30B, I-Clois30B, and CS high-dose exposures elicited a low grade, persistent inflammatory response. High-dose Clois30B exposure exhibited moderate increases in lung damage markers and a delayed macrophage recruitment cytokine signature peaking at day 7 followed by a fibrotic tissue signature at day 28, similar to CloisNa. I-CloisNa exhibited acute, transient inflammation with quick recovery. Conversely, high-dose I-Clois30B caused a weak initial inflammatory signal but showed comparable pro-inflammatory signaling to CS at day 28. The data demonstrate that ONC pulmonary toxicity and inflammatory potential relies on coating presence and incineration status in that coated and incinerated nanoclay exhibited less inflammation and granuloma formation than pristine montmorillonite. High doses of both pre- and post-incinerated ONC, with different surface morphologies, may harbor potential pulmonary health hazards over long-term occupational exposures.
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Affiliation(s)
- Todd A. Stueckle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505, United States
| | - Donna C. Davidson
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505, United States
| | - Ray Derk
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505, United States
| | - Tiffany G. Kornberg
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505, United States
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Lori Battelli
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505, United States
| | - Sherri Friend
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505, United States
| | - Marlene Orandle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505, United States
| | - Alixandra Wagner
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Cerasela Zoica Dinu
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Konstantinos A. Sierros
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Sushant Agarwal
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Rakesh K. Gupta
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Yon Rojanasakul
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Dale W. Porter
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505, United States
| | - Liying Rojanasakul
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505, United States
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