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Zaiachuk M, Suryavanshi SV, Pryimak N, Kovalchuk I, Kovalchuk O. The Anti-Inflammatory Effects of Cannabis sativa Extracts on LPS-Induced Cytokines Release in Human Macrophages. Molecules 2023; 28:4991. [PMID: 37446655 DOI: 10.3390/molecules28134991] [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: 05/10/2023] [Revised: 06/10/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Inflammation is the response of the innate immune system to any type of injury. Although acute inflammation is critical for survival, dysregulation of the innate immune response leads to chronic inflammation. Many synthetic anti-inflammatory drugs have side effects, and thus, natural anti-inflammatory compounds are still needed. Cannabis sativa L. may provide a good source of anti-inflammatory molecules. Here, we tested the anti-inflammatory properties of cannabis extracts and pure cannabinoids in lipopolysaccharide (LPS)-induced inflammation in human THP-1 macrophages. We found that pre-treatment with cannabidiol (CBD), delta-9-tetrahydrocannabinol (THC), or extracts containing high levels of CBD or THC reduced the level of induction of various cytokines. The CBD was more efficient than THC, and the extracts were more efficient than pure cannabinoids. Finally, IL-6, IL-10, and MCP-1 cytokines were most sensitive to pre-treatments with CBD and THC, while IL-1β, IL-8, and TNF-α were less responsive. Thus, our work demonstrates the potential of the use of cannabinoids or/and cannabis extracts for the reduction of inflammation and establishes IL-6 and MCP-1 as the sensitive markers for the analysis of the effect of cannabinoids on inflammation in macrophages.
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Affiliation(s)
- Mariia Zaiachuk
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
| | - Santosh V Suryavanshi
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
| | - Nazar Pryimak
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
| | - Igor Kovalchuk
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
| | - Olga Kovalchuk
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
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2
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Solstad AD, Brown JM, Ochrietor JD. The retina-specific basigin isoform does not induce IL-6 expression in mouse monocytes. Mol Vis 2023; 29:13-24. [PMID: 37287642 PMCID: PMC10243675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 04/20/2023] [Indexed: 06/09/2023] Open
Abstract
Purpose Basigin gene products are positioned on adjacent cell types in the neural retina and are thought to compose a lactate metabolon important for photoreceptor cell function. The Ig0 domain of basigin isoform 1 (basigin-1) is highly conserved throughout evolution, which suggests a conserved function. It has been suggested that the Ig0 domain has proinflammatory properties, and it is hypothesized to interact with basigin isoform 2 (basigin-2) for cell adhesion and lactate metabolon formation. Therefore, the purpose of the present study was to determine whether the Ig0 domain of basigin-1 binds to basigin-2 and whether the region of the domain used for binding is also used to stimulate interleukin-6 (IL-6) expression. Methods Binding was assessed using recombinant proteins corresponding to the Ig0 domain of basigin-1 and endogenously expressed basigin-2 from mouse neural retina and brain protein lysates. The proinflammatory properties of the Ig0 domain were analyzed with exposure of the recombinant proteins to the mouse monocyte RAW 264.7 cell line and subsequent measurement of the IL-6 concentration in the culture medium via enzyme-linked immunosorbent assay (ELISA). Results The data indicate that the Ig0 domain interacts with basigin-2 through a region within the amino half of the domain and that the Ig0 domain does not stimulate the expression of IL-6 in mouse cells in vitro. Conclusions The Ig0 domain of basigin-1 binds to basigin-2 in vitro. In addition, contrary to previous reports, there was no evidence that the Ig0 domain potentiates IL-6 expression in a mouse monocyte cell line in vitro. However, it is possible that the Ig0 domain stimulates the expression of proinflammatory cytokines other than IL-6, or that the potential involvement of the Ig0 domain of basigin-1 in the acute inflammatory response is dependent on species.
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Wang Y, Zuo X, Jiang F, Hou L, Jiang Q, Zhu Z, Tian L. A comparative study on the model of PM 2.5 direct or indirect interaction with bronchial epithelial cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:41567-41576. [PMID: 35094267 DOI: 10.1007/s11356-021-18324-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
The impact of PM2.5 on epithelial cells is a pivotal process leading to many lung pathological changes and pulmonary diseases. In addition to PM2.5 direct interaction with epithelia, macrophages that engulf PM2.5 may also influence the function of epithelial cells. However, among the toxic researches of PM2.5, there is a lack of evaluation of direct or indirect exposure model on human bronchial epithelial cell against PM2.5. In this present research, PM2.5-exposed human bronchial epithelial cell line (BEAS-2B) serves as the direct interaction model. By contrast, a PM2.5-stimulated co-culture model of macrophages and epithelial cells based on the transwell system was adopted as indirect stimulation model. By comparing these two models of interaction, we examined the viability of BEAS-2B and mRNA/protein expression profile of oxidative stress and inflammatory response-related transcription factors Nrf2, NF-kB, and according inflammatory indicators such as IL-1, IL-6, and IL-8, with a view to evaluating the effects of different interaction models of PM2.5 on epithelial cell damage in vitro. Our results indicated that under the same doses, the direct stimulation model of PM2.5 could inhibit the viability of BEAS-2B. Furthermore, the indirect stimulation model strengthen inflammation response of epithelia under the higher concentration of PM2.5 and induce epithelia to undergo EMT under the lower concentration of PM2.5. Overall, we have found that macrophage involvement may protect epithelia from PM2.5 cytotoxic effect, while it strengthens the inflammation response and induce epithelia to undergo EMT.
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Affiliation(s)
- Yan Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, No. 10, Xitoutiao Youanmen Street, Beijing, 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Xin Zuo
- Chaoyang District Center for Disease Control and Prevention, Beijing, 100021, China
| | - Fuyang Jiang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, No. 10, Xitoutiao Youanmen Street, Beijing, 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Lin Hou
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, No. 10, Xitoutiao Youanmen Street, Beijing, 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Qiyue Jiang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, No. 10, Xitoutiao Youanmen Street, Beijing, 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Zhonghui Zhu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, No. 10, Xitoutiao Youanmen Street, Beijing, 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Lin Tian
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, No. 10, Xitoutiao Youanmen Street, Beijing, 100069, China.
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China.
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Riederer AM, Krenz JE, Tchong-French MI, Torres E, Perez A, Younglove LR, Jansen KL, Hardie DC, Farquhar SA, Sampson PD, Metwali N, Thorne PS, Karr CJ. Effectiveness of portable HEPA air cleaners on reducing indoor endotoxin, PM 10, and coarse particulate matter in an agricultural cohort of children with asthma: A randomized intervention trial. INDOOR AIR 2021; 31:1926-1939. [PMID: 34288127 PMCID: PMC8577577 DOI: 10.1111/ina.12858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 04/05/2021] [Accepted: 05/02/2021] [Indexed: 06/13/2023]
Abstract
We conducted a randomized trial of portable HEPA air cleaners in the homes of children age 6-12 years with asthma in the Yakima Valley, Washington. All families received asthma education while intervention families also received two HEPA cleaners (child's bedroom, living room). We collected 14-day integrated samples of endotoxin in settled dust and PM10 and PM10-2.5 in the air of the children's bedrooms at baseline and one-year follow-up, and used linear regression to compare follow-up levels, adjusting for baseline. Seventy-one families (36 HEPA, 35 control) completed the study. Baseline geometric mean (GSD) endotoxin loadings were 1565 (6.3) EU/m2 and 2110 (4.9) EU/m2 , respectively, in HEPA vs. control homes while PM10 and PM10-2.5 were 22.5 (1.9) μg/m3 and 9.5 (2.9) μg/m3 , respectively, in HEPA homes, and 19.8 (1.8) μg/m3 and 7.7 (2.0) μg/m3 , respectively, in control homes. At follow-up, HEPA families had 46% lower (95% CI, 31%-57%) PM10 on average than control families, consistent with prior studies. In the best-fit heterogeneous slopes model, HEPA families had 49% (95% CI, 6%-110%) and 89% lower (95% CI, 28%-177%) PM10-2.5 at follow-up, respectively, at 50th and 75th percentile baseline concentrations. Endotoxin loadings did not differ significantly at follow-up (4% lower, HEPA homes; 95% CI, -87% to 50%).
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Affiliation(s)
- Anne M. Riederer
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Jennifer E. Krenz
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Maria I. Tchong-French
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Elizabeth Torres
- Northwest Communities Education Center, Radio KDNA, Granger, WA, USA
| | - Adriana Perez
- Yakima Valley Farm Workers Clinic, Toppenish, WA, USA
| | - Lisa R. Younglove
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Karen L. Jansen
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - David C. Hardie
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Stephanie A. Farquhar
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Paul D. Sampson
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Nervana Metwali
- Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, IA, USA
| | - Peter S. Thorne
- Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, IA, USA
| | - Catherine J. Karr
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
- Department of Pediatrics, University of Washington, Seattle, WA, USA
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Li Y, Xue J, Peppers J, Kado NY, Vogel CFA, Alaimo CP, Green PG, Zhang R, Jenkins BM, Kim M, Young TM, Kleeman MJ. Chemical and Toxicological Properties of Emissions from a Light-Duty Compressed Natural Gas Vehicle Fueled with Renewable Natural Gas. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:2820-2830. [PMID: 33555876 PMCID: PMC8284984 DOI: 10.1021/acs.est.0c04962] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Biogas consisting primarily of methane (CH4) and carbon dioxide (CO2) can be upgraded to a transportation fuel referred to as renewable natural gas (RNG) by removing CO2 and other impurities. RNG has energy content comparable to fossil compressed natural gas (CNG) but with lower life-cycle greenhouse gas (GHG) emissions. In this study, a light-duty cargo van was tested with CNG and two RNG blends on a chassis dynamometer in order to compare the toxicity of the resulting exhaust. Tests for reactive oxygen species (ROS), biomarker expressions (CYP1A1, IL8, COX-2), and mutagenicity (Ames) show that RNG exhaust has toxicity that is comparable or lower than CNG exhaust. Statistical analysis reveals associations between toxicity and tailpipe emissions of benzene, dibenzofuran, and dihydroperoxide dimethyl hexane (the last identification is considered tentative/uncertain). Further gas-phase toxicity may be associated with tailpipe emissions of formaldehyde, dimethyl sulfide, propene, and methyl ketene. CNG exhaust contained higher concentrations of these potentially toxic chemical constituents than RNG exhaust in all of the current tests. Photochemical aging of the vehicle exhaust did not alter these trends. These preliminary results suggest that RNG adoption may be a useful strategy to reduce the carbon intensity of transportation fuels without increasing the toxicity of the vehicle exhaust.
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Affiliation(s)
- Yin Li
- Department of Civil and Environmental Engineering, University of California - Davis, Davis, California 95616, United States
| | - Jian Xue
- Department of Civil and Environmental Engineering, University of California - Davis, Davis, California 95616, United States
| | - Joshua Peppers
- Department of Biological and Agricultural Engineering, University of California - Davis, Davis, California 95616, United States
| | - Norman Y Kado
- Department of Environmental Toxicology and Center for Health and the Environment, University of California - Davis, Davis, California 95616, United States
| | - Christoph F A Vogel
- Department of Environmental Toxicology and Center for Health and the Environment, University of California - Davis, Davis, California 95616, United States
| | - Christopher P Alaimo
- Department of Civil and Environmental Engineering, University of California - Davis, Davis, California 95616, United States
| | - Peter G Green
- Department of Civil and Environmental Engineering, University of California - Davis, Davis, California 95616, United States
| | - Ruihong Zhang
- Department of Biological and Agricultural Engineering, University of California - Davis, Davis, California 95616, United States
| | - Bryan M Jenkins
- Department of Biological and Agricultural Engineering, University of California - Davis, Davis, California 95616, United States
| | - Minji Kim
- Department of Civil and Environmental Engineering, University of California - Davis, Davis, California 95616, United States
| | - Thomas M Young
- Department of Civil and Environmental Engineering, University of California - Davis, Davis, California 95616, United States
| | - Michael J Kleeman
- Department of Civil and Environmental Engineering, University of California - Davis, Davis, California 95616, United States
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Yuan W, Fulgar CC, Sun X, Vogel CFA, Wu CW, Zhang Q, Bein KJ, Young DE, Li W, Wei H, Pinkerton KE. In vivo and in vitro inflammatory responses to fine particulate matter (PM 2.5) from China and California. Toxicol Lett 2020; 328:52-60. [PMID: 32320776 PMCID: PMC7641014 DOI: 10.1016/j.toxlet.2020.04.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 03/13/2020] [Accepted: 04/10/2020] [Indexed: 12/28/2022]
Abstract
Ambient PM2.5 was collected during the winter season from Taiyuan, Shanxi, China; Jinan, Shandong, China; and Sacramento, California, USA, and used to create PMSX, PMSD, and PMCA extracts, respectively. Time-lag experiments were performed to explore the in vivo and in vitro toxicity of the PM extracts. In vivo inflammatory lung responses were assessed in BALB/c mice using a single oropharyngeal aspiration (OPA) of PM extract or vehicle (CTRL) on Day 0. Necropsies were performed on Days 1, 2, and 4 post-OPA, and pulmonary effects were determined using bronchoalveolar lavage (BAL) and histopathology. On Day 1, BAL neutrophils were significantly elevated in all PM- versus CTRL-exposed mice, with PMCA producing the strongest response. However, histopathological scoring showed greater alveolar and perivascular effects in PMSX-exposed mice compared to all three other groups. By Day 4, BAL neutrophilia and tissue inflammation were resolved, similar across all groups. In vitro effects were examined in human HepG2 hepatocytes, and U937 cells following 6, 24, or 48 h of exposure to PM extract or DMSO (control). Luciferase reporter and quantitative polymerase chain reaction assays were used to determine in vitro effects on aryl hydrocarbon receptor (AhR) activation and gene transcription, respectively. Though all three PM extracts activated AhR, PMSX produced the greatest increases in AhR activation, and mRNA levels of cyclooxygenase-2, cytochrome P450, interleukin (IL)-8, and interleukin (IL)-1β. These effects were assumed to result from a greater abundance of polycyclic aromatic hydrocarbons (PAHs) in PMSX compared to PMSD and PMCA.
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Affiliation(s)
- Wanjun Yuan
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan, China; Center for Health and the Environment, University of California, Davis, USA
| | - Ciara C Fulgar
- Center for Health and the Environment, University of California, Davis, USA
| | - Xiaolin Sun
- Center for Health and the Environment, University of California, Davis, USA; Biomedical Engineering Institute, School of Control Science and Engineering, Shandong University, Jinan, China
| | - Christoph F A Vogel
- Center for Health and the Environment, University of California, Davis, USA; Department of Environmental Toxicology, University of California, Davis, USA
| | - Ching-Wen Wu
- Center for Health and the Environment, University of California, Davis, USA
| | - Qi Zhang
- Department of Environmental Toxicology, University of California, Davis, USA
| | - Keith J Bein
- Center for Health and the Environment, University of California, Davis, USA
| | - Dominique E Young
- Department of Environmental Toxicology, University of California, Davis, USA
| | - Wei Li
- Biomedical Engineering Institute, School of Control Science and Engineering, Shandong University, Jinan, China.
| | - Haiying Wei
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan, China.
| | - Kent E Pinkerton
- Center for Health and the Environment, University of California, Davis, USA.
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7
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de Groot LES, Liu D, Dierdorp BS, Fens N, van de Pol MA, Sterk PJ, Kulik W, Gerlofs-Nijland ME, Cassee FR, Pinelli E, Lutter R. Ex vivo innate responses to particulate matter from livestock farms in asthma patients and healthy individuals. Environ Health 2020; 19:78. [PMID: 32620109 PMCID: PMC7333268 DOI: 10.1186/s12940-020-00632-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Asthma patients suffer from periodic acute worsening of symptoms (i.e. loss of asthma control or exacerbations), triggered by a variety of exogenous stimuli. With the growing awareness that air pollutants impact respiratory diseases, we investigated whether particulate matter (PM) derived from various livestock farms (BioPM) differentially affected innate and oxidative stress responses in asthma and health. METHODS Peripheral blood mononuclear cells (PBMCs), collected from patients sequentially before and during loss of asthma control and from healthy individuals, were exposed to BioPM collected from chicken, goat and pig farms (1 and 5 μg/ml), with or without pre-treatment with antioxidants. Cytokine release and oxidative stress were assessed. RESULTS PBMCs produced IFNγ, IL-1β, IL-10 and TNFα upon stimulation with BioPM, with that from pig farms inducing the highest cytokine levels. Overall, cytokine production was irrespective of the presence or state of disease. However, PBMCs from stable asthma patients upon exposure to the three BioPM showed more extreme TNFα responses than those from healthy subjects. Furthermore, PBMCs obtained during loss of asthma control that were exposed to BioPM from pig farms showed enhanced IFNγ release as well as decreased oxidative stress levels upon pre-treatment with N-acetylcysteine (NAC) compared to stable disease. NAC, but not superoxide dismutase and catalase, also counteracted BioPM-induced cytokine release, indicating the importance of intracellular reactive oxygen species in the production of cytokines. CONCLUSIONS BioPM triggered enhanced pro-inflammatory responses by PBMCs from both healthy subjects and asthma patients, with those from patients during loss of asthma control showing increased susceptibility to BioPM from pig farms in particular.
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Affiliation(s)
- Linsey E S de Groot
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
- Department of Experimental Immunology (Amsterdam Infection & Immunity Institute), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
| | - Dingyu Liu
- Centre for Sustainability, Environment and Health, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Barbara S Dierdorp
- Department of Experimental Immunology (Amsterdam Infection & Immunity Institute), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Niki Fens
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Marianne A van de Pol
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Peter J Sterk
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Wim Kulik
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Miriam E Gerlofs-Nijland
- Centre for Sustainability, Environment and Health, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Flemming R Cassee
- Centre for Sustainability, Environment and Health, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Elena Pinelli
- Centre for Immunology of Infectious Diseases and Vaccines, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - René Lutter
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Experimental Immunology (Amsterdam Infection & Immunity Institute), Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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Tang Q, Huang K, Liu J, Wu S, Shen D, Dai P, Li C. Fine particulate matter from pig house induced immune response by activating TLR4/MAPK/NF-κB pathway and NLRP3 inflammasome in alveolar macrophages. CHEMOSPHERE 2019; 236:124373. [PMID: 31336238 DOI: 10.1016/j.chemosphere.2019.124373] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 07/11/2019] [Accepted: 07/13/2019] [Indexed: 05/05/2023]
Abstract
Fine particulate matter (PM2.5) from livestock houses is harmful not only to the health and welfare of animals but also to the farmers working inside. As an important pollution source in the atmosphere environment, PM2.5 can threaten public health. PM2.5 collected from nursery pig house was studied. It included particulates of various morphologies, and the concentration of endotoxin was as high as to 681.80 EU/mg. To investigate the ability of PM2.5 from the nursery pig house to induce an immune response, porcine alveolar macrophages 3D4/21 cells were studied. The results showed that PM2.5 can induce cell death, ROS production and inflammatory cytokines release (IL-1β, IL-18, TNF-α and COX-2) by activating TLR4/MyD88 pathway and NLRP3 inflammasome. Furthermore, the downstream signaling pathways of TLR4/MyD88, MAPK and NF-κB, participated in NLRP3 inflammasome activation. To further study the role of endotoxin present in PM2.5 and the oxidative stress induced by PM2.5, polymyxin B (PMB) and N-acetylcysteine (NAC) were used to neutralize the effect of the endotoxin and inhibit the production of ROS, respectively. The results showed endotoxin and ROS played important roles in PM2.5-induced immune response. This study suggests that PM2.5 from pig house is a significant risk for immune response in alveolar macrophages.
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Affiliation(s)
- Qian Tang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kai Huang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Junze Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Sheng Wu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dan Shen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Pengyuan Dai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chunmei Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China; National Experimental Teaching Demonstration Center of Animal Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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9
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Li Y, Alaimo CP, Kim M, Kado NY, Peppers J, Xue J, Wan C, Green PG, Zhang R, Jenkins BM, Vogel CFA, Wuertz S, Young TM, Kleeman MJ. Composition and Toxicity of Biogas Produced from Different Feedstocks in California. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:11569-11579. [PMID: 31479247 PMCID: PMC7608650 DOI: 10.1021/acs.est.9b03003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Biogas is a renewable energy source composed of methane, carbon dioxide, and other trace compounds produced from anaerobic digestion of organic matter. A variety of feedstocks can be combined with different digestion techniques that each yields biogas with different trace compositions. California is expanding biogas production systems to help meet greenhouse gas reduction goals. Here, we report the composition of six California biogas streams from three different feedstocks (dairy manure, food waste, and municipal solid waste). The chemical and biological composition of raw biogas is reported, and the toxicity of combusted biogas is tested under fresh and photochemically aged conditions. Results show that municipal waste biogas contained elevated levels of chemicals associated with volatile chemical products such as aromatic hydrocarbons, siloxanes, and certain halogenated hydrocarbons. Food waste biogas contained elevated levels of sulfur-containing compounds including hydrogen sulfide, mercaptans, and sulfur dioxide. Biogas produced from dairy manure generally had lower concentrations of trace chemicals, but the combustion products had slightly higher toxicity response compared to the other feedstocks. Atmospheric aging performed in a photochemical smog chamber did not strongly change the toxicity (oxidative capacity or mutagenicity) of biogas combustion exhaust.
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Affiliation(s)
- Yin Li
- Department of Civil and Environmental Engineering, University of California – Davis, Davis, California 95616, United States
| | - Christopher P. Alaimo
- Department of Civil and Environmental Engineering, University of California – Davis, Davis, California 95616, United States
| | - Minji Kim
- Department of Civil and Environmental Engineering, University of California – Davis, Davis, California 95616, United States
| | - Norman Y. Kado
- Department of Environmental Toxicology and Center for Health and the Environment, University of California – Davis, Davis, California 95616, United States
| | - Joshua Peppers
- Department of Biological and Agricultural Engineering, University of California – Davis, Davis, California 95616, United States
| | - Jian Xue
- Department of Civil and Environmental Engineering, University of California – Davis, Davis, California 95616, United States
| | - Chao Wan
- Department of Civil and Environmental Engineering, University of California – Davis, Davis, California 95616, United States
| | - Peter G. Green
- Department of Civil and Environmental Engineering, University of California – Davis, Davis, California 95616, United States
| | - Ruihong Zhang
- Department of Biological and Agricultural Engineering, University of California – Davis, Davis, California 95616, United States
| | - Bryan M. Jenkins
- Department of Biological and Agricultural Engineering, University of California – Davis, Davis, California 95616, United States
| | - Christoph F. A. Vogel
- Department of Environmental Toxicology and Center for Health and the Environment, University of California – Davis, Davis, California 95616, United States
| | - Stefan Wuertz
- Singapore Center for Environmental Life Sciences Engineering, Nanyang Technical University, Singapore 637551
| | - Thomas M. Young
- Department of Civil and Environmental Engineering, University of California – Davis, Davis, California 95616, United States
| | - Michael J. Kleeman
- Department of Civil and Environmental Engineering, University of California – Davis, Davis, California 95616, United States
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10
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Ho KV, Schreiber KL, Vu DC, Rottinghaus SM, Jackson DE, Brown CR, Lei Z, Sumner LW, Coggeshall MV, Lin CH. Black Walnut ( Juglans nigra) Extracts Inhibit Proinflammatory Cytokine Production From Lipopolysaccharide-Stimulated Human Promonocytic Cell Line U-937. Front Pharmacol 2019; 10:1059. [PMID: 31607915 PMCID: PMC6761373 DOI: 10.3389/fphar.2019.01059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 08/20/2019] [Indexed: 01/01/2023] Open
Abstract
Black walnut (Juglans nigra L.) is an excellent source of health-promoting compounds. Consumption of black walnuts has been linked to many health benefits (e.g., anti-inflammatory) stemming from its phytochemical composition and medicinal properties, but these effects have not been systematically studied or characterized. In this study, potential anti-inflammatory compounds found in kernel extracts of 10 black walnut cultivars were putatively identified using a metabolomic profiling analysis, revealing differences in potential anti-inflammatory capacities among examined cultivars. Five cultivars were examined for activities in the human promonocytic cell line U-937 by evaluating the effects of the extracts on the expression of six human inflammatory cytokines/chemokines using a bead-based, flow cytometric multiplex assay. The methanolic extracts of these cultivars were added at four concentrations (0.1, 0.3, 1, and 10 mg/ml) either before and after the addition of lipopolysaccharide (LPS) to human U-937 cells to examine their effect on cytokine production. Results from cytotoxicity and viability assays revealed that the kernel extracts had no toxic effect on the U-937 cells. Of the 13 cytokines [interleukin (IL)-1β, tumor necrosis factor alpha (TNF-α), monocyte chemoattractant protein (MCP)-1, IL-6, IL-8, IL-10, IL-12, IL-17, IL-18, IL-23, IL-33, interferon (IFN)-α, IFN-γ] measured, only six were detected under the culture conditions. The production of the six detected cytokines by phorbol 12-myristate 13-acetate (PMA)-differentiated, LPS-stimulated U-937 was significantly inhibited by the kernel extracts from two cultivars Surprise and Sparrow when the extracts were added before the addition of LPS. Other cultivars (Daniel, Mystry, and Sparks) showed weak or no significant effects on cytokine production. In contrast, no inhibitory effect was observed on the production of cytokines by PMA-differentiated, LPS-stimulated U-937 when the kernel extracts were added after the addition of LPS. The findings suggest that the extracts from certain black walnut cultivars, such as Sparrow and Surprise, are promising biological candidates for potentially decreasing the severity of inflammatory disease.
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Affiliation(s)
- Khanh-Van Ho
- Center for Agroforestry, School of Natural Resources, University of Missouri, Columbia, MO, United States.,Department of Food Technology, Can Tho University, Can Tho, Vietnam
| | - Kathy L Schreiber
- Cell and Immunobiology Core, University of Missouri, Columbia, MO, United States
| | - Danh C Vu
- Center for Agroforestry, School of Natural Resources, University of Missouri, Columbia, MO, United States
| | - Susan M Rottinghaus
- Cell and Immunobiology Core, University of Missouri, Columbia, MO, United States
| | - Daniel E Jackson
- Cell and Immunobiology Core, University of Missouri, Columbia, MO, United States
| | - Charles R Brown
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, United States
| | - Zhentian Lei
- Metabolomics Center, University of Missouri, Columbia, MO, United States.,Department of Biochemistry, Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
| | - Lloyd W Sumner
- Metabolomics Center, University of Missouri, Columbia, MO, United States.,Department of Biochemistry, Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
| | - Mark V Coggeshall
- United States Northern Research Station, USDA-Forest Service, West Lafayette, IN, United States
| | - Chung-Ho Lin
- Center for Agroforestry, School of Natural Resources, University of Missouri, Columbia, MO, United States
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11
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Natarajan K, Meganathan V, Mitchell C, Boggaram V. Organic dust induces inflammatory gene expression in lung epithelial cells via ROS-dependent STAT-3 activation. Am J Physiol Lung Cell Mol Physiol 2019; 317:L127-L140. [PMID: 31042082 DOI: 10.1152/ajplung.00448.2018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Exposure to dust in agricultural and animal environments, known as organic dust, is associated with the development of respiratory symptoms and respiratory diseases. Inflammation is a key feature of lung pathologies associated with organic dust exposure, and exposure to organic dust induces the expression of several immune and inflammatory mediators. However, information on transcription factors and cellular and molecular mechanisms controlling the production of immune and inflammatory mediators induced by organic dust is limited. In this study, we have identified STAT-3 as an important transcription factor controlling the induction of expression of immune and inflammatory mediators by poultry dust extracts in airway epithelial cells and in mouse lungs and delineated the cellular pathway for STAT-3 activation. Poultry dust extract activated STAT-3 phosphorylation in Beas2B and normal human bronchial epithelial cells and in mouse lungs. Chemical inhibition and siRNA knockdown of STAT-3 suppressed induction of immune and inflammatory mediator expression. Antioxidants suppressed the increase of STAT-3 phosphorylation induced by poultry dust extract indicating that oxidative stress [elevated reactive oxygen species (ROS) levels] is important for the activation. Chemical inhibition and siRNA knockdown experiments demonstrated that STAT-3 activation is dependent on the activation of nonreceptor tyrosine-protein kinase 2 (TYK2) and epidermal growth factor receptor (EGFR) tyrosine kinases. Our studies show that poultry dust extract controls the induction of immune and inflammatory mediator expression via a cellular pathway involving oxidative stress-mediated STAT-3 activation by TYK2 and EGFR tyrosine kinases.
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Affiliation(s)
- Kartiga Natarajan
- Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Velmurugan Meganathan
- Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Courtney Mitchell
- Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Vijay Boggaram
- Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler , Tyler, Texas
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12
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Zhong Y, Liao J, Hu Y, Wang Y, Sun C, Zhang C, Wang G. PM 2.5 Upregulates MicroRNA-146a-3p and Induces M1 Polarization in RAW264.7 Cells by Targeting Sirtuin1. Int J Med Sci 2019; 16:384-393. [PMID: 30911272 PMCID: PMC6428978 DOI: 10.7150/ijms.30084] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 12/31/2018] [Indexed: 12/17/2022] Open
Abstract
Background: Fine particulate matter (PM2.5) exposure is proved to be associated with illnesses, but the mechanism is not clear. Potential effects of PM2.5 on innate immunity have become a hotspot recently. Confronting PM2.5, macrophages are able to be activated and induce inflammatory responses. Whether PM2.5 exposure affects macrophage polarization and associated mechanisms remains to be further explored. Afterwards, whether Sirtuin1 (SIRT1) an important intermediate regulator in various physiological processes takes part in the macrophage polarization induced by PM2.5 is unknown. MiRNAs are acknowledged as key regulator in posttranscriptional modification and our previous study found that miR-146a is a novel biomarker of PM2.5 exposure. Thus, we propose a hypothesis, PM2.5 exposure induces M1 polarization and miR-146a-3p is a potential upstream regulator by targeting SIRT1. Methods: RAW264.7 cells were treated with different concentrations of PM2.5 for 24h. The expressions of cytokines and key molecular markers were detected by qRT-PCR, Western blotting and ELISA. The activation degree of TLRs and NF-κB was assessed by Western blotting. The specific agonist and antagonist of SIRT1 were used to explore the potential role of SIRT1 in M1 polarization induced by PM2.5. MiR-146a-3p mimic and inhibitor were pre-transfected into RAW264.7 cells and the effects on M1 polarization induced by PM2.5 were evaluated. Luciferase analysis was used to identify the binding site of miR-146a-3p and SIRT1. Results: PM2.5 increased the mRNA and protein expression of M1 markers including interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α) and inducible nitric oxide synthase (iNOS) in RAW264.7 cells. The protein level of TLR4 was significantly increased and the ratio of phosphorylated NF-κB p65 versus p65 subunit was also elevated in PM2.5 group. PM2.5 decreased the protein level of SIRT1 but not the mRNA expression in vitro and in vivo experiments. Pre-treatment with SIRT1 agonist SRT1720 rescued the PM2.5 induced M1 response. Whereas, SIRT1 antagonist EX527 augment the effect. MiR-146a-3p was upregulated in PM2.5 treated RAW264.7 cells. Luciferase experiments reported that SIRT1 was directly targeted by miR-146a-3p. Overexpression of miR-146a-3p downregulated the expression of SIRT1 protein in untreated RAW264.7 cells. Importantly, inhibition of miR-146a-3p upregulated SIRT1 protein and suppressed M1 polarization in PM2.5 treated RAW264.7 cells. Conclusions: These results suggested that PM2.5 induces the inflammatory M1 polarization and TLR4/NF-κB signal transduction pathway might be involved in the process. MiR-146a-3p is a novel regulator of PM2.5 exerted M1 polarization by targeting SIRT1.
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Affiliation(s)
- Yijue Zhong
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, China, 100034
| | - Jiping Liao
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, China, 100034
| | - Yan Hu
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, China, 100034
| | - Yunxia Wang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, China, 100034
| | - Chao Sun
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, China, 100034
| | - Cheng Zhang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, China, 100034
| | - Guangfa Wang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, China, 100034
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13
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Davidson ME, Schaeffer J, Clark ML, Magzamen S, Brooks EJ, Keefe TJ, Bradford M, Roman-Muniz N, Mehaffy J, Dooley G, Poole JA, Mitloehner FM, Reed S, Schenker MB, Reynolds SJ. Personal exposure of dairy workers to dust, endotoxin, muramic acid, ergosterol, and ammonia on large-scale dairies in the high plains Western United States. JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE 2018; 15:182-193. [PMID: 29157144 PMCID: PMC8641559 DOI: 10.1080/15459624.2017.1403610] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Dairy workers experience a high degree of bioaerosol exposure, composed of an array of biological and chemical constituents, which have been tied to adverse health effects. A better understanding of the variation in the magnitude and composition of exposures by task is needed to inform worker protection strategies. To characterize the levels and types of exposures, 115 dairy workers grouped into three task categories on nine farms in the high plains Western United States underwent personal monitoring for inhalable dust, endotoxin, 3-hydroxy fatty acids (3-OHFA), muramic acid, ergosterol, and ammonia through one work shift. Eighty-nine percent of dairy workers were exposed to endotoxin at concentrations exceeding the recommended exposure guidelines (adjusted for a long work shift). The proportion of workers with exposures exceeding recommended guidelines was lower for inhalable dust (12%), and ammonia (1%). Ergosterol exposures were only measurable on 28% of samples, primarily among medical workers and feed handlers. Milking parlor workers were exposed to significantly higher inhalable dust, endotoxin, 3-OHFA, ammonia, and muramic acid concentrations compared to workers performing other tasks. Development of large modern dairies has successfully made progress in reducing worker exposures and lung disease prevalence. However, exposure to endotoxin, dust, and ammonia continues to present a significant risk to worker health on North American dairies, especially for workers in milking parlors. This study was among the first to concurrently evaluate occupational exposure to assayable endotoxin (lipid A), 3-hydroxy fatty acids or 3-OHFA (a chemical measure of cell bound and noncell-bound endotoxins), muramic acid, ergosterol, and ammonia among workers on Western U.S. dairies. There remains a need for cost-effective, culturally acceptable intervention strategies integrated in OHS Risk Management and production systems to further optimize worker health and farm productivity.
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Affiliation(s)
- Margaret E Davidson
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
- f Edith Cowan University , Perth , Western Australila , Australia
| | - Joshua Schaeffer
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
| | - Maggie L Clark
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
| | - Sheryl Magzamen
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
| | - Elizabeth J Brooks
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
| | - Thomas J Keefe
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
| | - Mary Bradford
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
| | - Noa Roman-Muniz
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- c Department of Animal Science , Colorado State University, Colorado State University , Fort Collins , Colorado
| | - John Mehaffy
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
| | - Gregory Dooley
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
| | - Jill A Poole
- d University of Nebraska Medical Center , Omaha , Nebraska
| | - Frank M Mitloehner
- e Western Center for Agricultural Health and Safety , UC Davis , Davis , California
| | - Sue Reed
- f Edith Cowan University , Perth , Western Australila , Australia
| | - Marc B Schenker
- e Western Center for Agricultural Health and Safety , UC Davis , Davis , California
| | - Stephen J Reynolds
- a Department of Environmental & Radiological Health Sciences , Colorado State University , Fort Collins , Colorado
- b High Plains Intermountain Center for Agricultural Health and Safety , Colorado State University , Fort Collins , Colorado
- f Edith Cowan University , Perth , Western Australila , Australia
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14
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Pfister H, Morzadec C, Le Cann P, Madec L, Lecureur V, Chouvet M, Jouneau S, Vernhet L. Granulometry, microbial composition and biological activity of dusts collected in French dairy farms. ENVIRONMENTAL RESEARCH 2017; 158:691-702. [PMID: 28735230 DOI: 10.1016/j.envres.2017.07.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 07/07/2017] [Accepted: 07/08/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Dairy working increases the prevalence of lower airway respiratory diseases, especially COPD and asthma. Epidemiological studies have reported that chronic inhalation of organic dusts released during specific daily tasks could represent a major risk factor for development of these pathologies in dairy workers. Knowledge on size, nature and biological activity of such organic dusts remain however limited. OBJECTIVE To compare size distribution, microbial composition and cellular effects of dusts liberated by the spreading of straw bedding in five French dairy farms located in Brittany. RESULTS Mechanized distribution of straw bedding generated a cloud of inhalable dusts in the five dairy farms' barns. Thoracic particles having a 3-7.5µm size constituted 58.9-68.3% of these dusts. Analyses of thoracic dusts by next generation sequencing showed that the microbial dust composition differed between the five French farms, although Actinobacteria, Bacteroidetes, Firmicutes and Proteobacteria represent more than 97.5% of the bacterial phyla detected in each sample. Several bacteria genera comprising of human pathogenic species, such as Pseudomonas, Staphylococcus, Thermoactinomyces or Saccharopolyspora were identified. Cladosporium and Alternaria fungal genera, which are potent environmental determinants of respiratory symptoms, were detected in dusts collected in the five farms and their levels reached 15.5-51.1% and 9-24.7% of assignable fungal sequences in each sample, respectively. Finally, all dust samples significantly and strongly increased the expression of the pro-inflammatory TNF-α, IL-1β, IL-6 and IL-8 cytokines at both mRNA and protein levels in human monocyte-derived macrophages. Their effects were dose-dependent and detectable from 1µg/ml. The intensity of the macrophage responses however differed according to the samples. CONCLUSIONS Our results strengthen the hypothesis that organic dusts released during the distribution of straw bedding are mainly constituted of thoracic particles which are small enough to deposit on lower bronchial epithelium of dairy farmers and induce inflammation.
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Affiliation(s)
- Hugo Pfister
- Institut technique des gaz et de l'air, Saint-Gregoire, France; UMR Inserm 1085, Institut de Recherche sur la Santé, l'Environnement et le Travail (IRSET), Université de Rennes 1, 2 avenue du Professeur Léon Bernard, 35043 Rennes, France
| | - Claudie Morzadec
- UMR Inserm 1085, Institut de Recherche sur la Santé, l'Environnement et le Travail (IRSET), Université de Rennes 1, 2 avenue du Professeur Léon Bernard, 35043 Rennes, France
| | - Pierre Le Cann
- UMR Inserm 1085, Institut de Recherche sur la Santé, l'Environnement et le Travail (IRSET), Université de Rennes 1, 2 avenue du Professeur Léon Bernard, 35043 Rennes, France; French School of Public Health, Department of Environmental and Occupational Health and Sanitary Engineering, Rennes, France
| | - Laurent Madec
- UMR Inserm 1085, Institut de Recherche sur la Santé, l'Environnement et le Travail (IRSET), Université de Rennes 1, 2 avenue du Professeur Léon Bernard, 35043 Rennes, France; French School of Public Health, Department of Environmental and Occupational Health and Sanitary Engineering, Rennes, France
| | - Valérie Lecureur
- UMR Inserm 1085, Institut de Recherche sur la Santé, l'Environnement et le Travail (IRSET), Université de Rennes 1, 2 avenue du Professeur Léon Bernard, 35043 Rennes, France
| | - Martine Chouvet
- Institut technique des gaz et de l'air, Saint-Gregoire, France
| | - Stéphane Jouneau
- UMR Inserm 1085, Institut de Recherche sur la Santé, l'Environnement et le Travail (IRSET), Université de Rennes 1, 2 avenue du Professeur Léon Bernard, 35043 Rennes, France; Service de pneumologie, centre de compétences des maladies pulmonaires rares de Bretagne, Hôpital Pontchaillou, Rennes, France
| | - Laurent Vernhet
- UMR Inserm 1085, Institut de Recherche sur la Santé, l'Environnement et le Travail (IRSET), Université de Rennes 1, 2 avenue du Professeur Léon Bernard, 35043 Rennes, France.
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15
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Bekki K, Ito T, Yoshida Y, He C, Arashidani K, He M, Sun G, Zeng Y, Sone H, Kunugita N, Ichinose T. PM2.5 collected in China causes inflammatory and oxidative stress responses in macrophages through the multiple pathways. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 45:362-9. [PMID: 27393915 DOI: 10.1016/j.etap.2016.06.022] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 06/20/2016] [Accepted: 06/21/2016] [Indexed: 05/20/2023]
Abstract
Air pollution continues to increase in East Asia, particularly in China, and is considered to cause serious health problems. In this study, we investigated the toxicological properties of particulate matter ≤2.5mm (PM2.5) collected in an urban area in China (Shenyang), focusing on inflammation and oxidative stress tightly linked to respiratory diseases. Exposure to PM2.5 significantly increased the expression levels of inflammatory (interleukin-1β and cyclooxygenase-2) and oxidative stress (heme oxygenase1) genes in the mouse macrophages. PM2.5-caused inflammatory response was strongly suppressed by endotoxin neutralizer (polymyxin B) and knock-out of toll-like receptor 4, while oxidative stress was not. On the other hand, an antioxidant (N-acetylcystein) suppressed oxidative stress, but not inflammatory response. These results suggest that PM2.5 in the atmospheric environment of China causes inflammation and oxidative stress in macrophages via separate pathways.
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Affiliation(s)
- Kanae Bekki
- Department of Environmental Health, National Institute of Public Health, 2-3-6 Minami, Wako-shi, Saitama, 351-0197, Japan
| | - Tomohiro Ito
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan.
| | - Yasuhiro Yoshida
- Department of Immunology, School of Medicine, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahata-nishi-ku, Kitakyushu, Fukuoka, 807-8555, Japan
| | - Cuiying He
- Department of Immunology, School of Medicine, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahata-nishi-ku, Kitakyushu, Fukuoka, 807-8555, Japan
| | - Keiichi Arashidani
- Department of Immunology, School of Medicine, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahata-nishi-ku, Kitakyushu, Fukuoka, 807-8555, Japan
| | - Miao He
- Environment and Non-Communicable Disease Research Center, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Guifan Sun
- Environment and Non-Communicable Disease Research Center, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
| | - Yang Zeng
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan
| | - Hideko Sone
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan
| | - Naoki Kunugita
- Department of Environmental Health, National Institute of Public Health, 2-3-6 Minami, Wako-shi, Saitama, 351-0197, Japan
| | - Takamichi Ichinose
- Department of Health Sciences, Oita University of Nursing and Health Sciences, 2944-9 Megusuno, Oita City, Oita Prefecture, 870-1201, Japan
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16
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Zhao Q, Chen H, Yang T, Rui W, Liu F, Zhang F, Zhao Y, Ding W. Direct effects of airborne PM2.5 exposure on macrophage polarizations. Biochim Biophys Acta Gen Subj 2016; 1860:2835-43. [PMID: 27041089 DOI: 10.1016/j.bbagen.2016.03.033] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 03/16/2016] [Accepted: 03/22/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Exposure of atmospheric particulate matter with an aerodynamic diameter less than 2.5μm (PM2.5) is epidemiologically associated with illnesses. Potential effects of air pollutants on innate immunity have raised concerns. As the first defense line, macrophages are able to induce inflammatory response. However, whether PM2.5 exposure affects macrophage polarizations remains unclear. METHODS We used freshly isolated macrophages as a model system to demonstrate effects of PM2.5 on macrophage polarizations. The expressions of cytokines and key molecular markers were detected by real-time PCR, and flow cytometry. The specific inhibitors and gene deletion technologies were used to address the molecular mechanisms. RESULTS PM2.5 increased the expression of pro-inflammatory cytokines granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin-6 (IL-6), interleukin-1β (IL-1β), tumor necrosis factor alpha (TNFα). PM2.5 also enhanced the lipopolysaccharide (LPS)-induced M1 polarization even though there was no evidence in the change of cell viability. However, PM2.5 significantly decreased the number of mitochondria in a dose dependent manner. Pre-treatment with NAC, a scavenger of reactive oxygen species (ROS), prevented the increase of ROS and rescued the PM2.5-impacted M1 but not M2 response. However, mTOR deletion partially rescued the effects of PM2.5 to reduce M2 polarization. CONCLUSIONS PM2.5 exposure significantly enhanced inflammatory M1 polarization through ROS pathway, whereas PM2.5 exposure inhibited anti-inflammatory M2 polarization through mTOR-dependent pathway. GENERAL SIGNIFICANCE The present studies suggested that short-term exposure of PM2.5 acts on the balance of inflammatory M1 and anti-inflammatory M2 macrophage polarizations, which may be involved in air pollution-induced immune disorders and diseases. This article is part of a Special Issue entitled Air Pollution, edited by Wenjun Ding, Andrew J. Ghio and Weidong Wu.
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Affiliation(s)
- Qingjie Zhao
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Hui Chen
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Tao Yang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Wei Rui
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Fang Liu
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Fang Zhang
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yong Zhao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
| | - Wenjun Ding
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China.
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17
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Zhang Y, Mo Y, Gu A, Wan R, Zhang Q, Tollerud DJ. Effects of urban particulate matter with high glucose on human monocytes U937. J Appl Toxicol 2015; 36:586-95. [DOI: 10.1002/jat.3198] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 05/18/2015] [Accepted: 05/23/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Yue Zhang
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences; University of Louisville; 485 E. Gray Street Louisville KY 40209 USA
- duPont Manual High School; 120 West Lee Street Louisville KY 40208 USA
| | - Yiqun Mo
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences; University of Louisville; 485 E. Gray Street Louisville KY 40209 USA
| | - Aihua Gu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology; Nanjing Medical University; Nanjing China
| | - Rong Wan
- Department of Pathology; Fujian Medical University; Fujian China
| | - Qunwei Zhang
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences; University of Louisville; 485 E. Gray Street Louisville KY 40209 USA
| | - David J. Tollerud
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences; University of Louisville; 485 E. Gray Street Louisville KY 40209 USA
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18
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Reynolds SJ, Nonnenmann MW, Basinas I, Davidson M, Elfman L, Gordon J, Kirychuck S, Reed S, Schaeffer JW, Schenker MB, Schlünssen V, Sigsgaard T. Systematic review of respiratory health among dairy workers. J Agromedicine 2014; 18:219-43. [PMID: 23844790 DOI: 10.1080/1059924x.2013.797374] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The dairy industry is changing on a global scale with larger, more efficient operations. The impact of this change on worker health and safety, specifically, associations between occupational lung disease and inhalation exposures, has yet to be reported in a comprehensive review of the scientific literature. Therefore, a three-tier process was used to identify information using a keyword search of online databases of scientific literature. Of the 147 citations reviewed, 52 met initial screening criteria, and 30 were included in this review. Dairy workers experience lung conditions such as asthma, chronic obstructive pulmonary disease, hypersensitivity pneumonitis, chronic bronchitis, and cancer. Recent pulmonary function studies have identified obstructive lung changes among dairy farm workers. The increased scale of dairy production with significant changes in technology and work practices has altered inhalation exposure patterns among dairy workers. The inhalation exposure in the dairy work environment may elicit differing inflammatory responses in relation to timing of initial exposure as well as to repeated exposures. Few studies have measured inhalation exposure while simultaneously assessing the impact of the exposure on lung function of dairy farm workers. Even fewer studies have been implemented to assess the impact of aerosol control technology to reduce inhalation exposure. Future research should evaluate worker exposure to aerosols through a task-based approach while utilizing novel methods to assess inhalation exposure and associated inflammatory responses. Finally, potential solutions should be developed and tested to reduce inhalation exposure to inflammatory agents and respiratory diseases in the dairy farm work environment.
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Affiliation(s)
- Stephen J Reynolds
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado 80523, USA.
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Regulatory T cells protect fine particulate matter-induced inflammatory responses in human umbilical vein endothelial cells. Mediators Inflamm 2014; 2014:869148. [PMID: 24987196 PMCID: PMC4060066 DOI: 10.1155/2014/869148] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 05/06/2014] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE To investigate the role of CD4(+)CD25(+) T cells (Tregs) in protecting fine particulate matter (PM-) induced inflammatory responses, and its potential mechanisms. METHODS Human umbilical vein endothelial cells (HUVECs) were treated with graded concentrations (2, 5, 10, 20, and 40 µg/cm(2)) of suspension of fine particles for 24h. For coculture experiment, HUVECs were incubated alone, with CD4(+)CD25(-) T cells (Teff), or with Tregs in the presence of anti-CD3 monoclonal antibodies for 48 hours, and then were stimulated with or without suspension of fine particles for 24 hours. The expression of adhesion molecules and inflammatory cytokines was examined. RESULTS Adhesion molecules, including vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1), and inflammatory cytokines, such as interleukin (IL-) 6 and IL-8, were increased in a concentration-dependent manner. Moreover, the adhesion of human acute monocytic leukemia cells (THP-1) to endothelial cells was increased and NF- κ B activity was upregulated in HUVECs after treatment with fine particles. However, after Tregs treatment, fine particles-induced inflammatory responses and NF- κ B activation were significantly alleviated. Transwell experiments showed that Treg-mediated suppression of HUVECs inflammatory responses impaired by fine particles required cell contact and soluble factors. CONCLUSIONS Tregs could attenuate fine particles-induced inflammatory responses and NF- κ B activation in HUVECs.
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Mamik MK, Ghorpade A. Chemokine CXCL8 promotes HIV-1 replication in human monocyte-derived macrophages and primary microglia via nuclear factor-κB pathway. PLoS One 2014; 9:e92145. [PMID: 24662979 PMCID: PMC3963875 DOI: 10.1371/journal.pone.0092145] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 02/18/2014] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Chemokine CXCL8 is an important neutrophil chemoattractant implicated in various neurodegenerative disorders. Cytokine/chemokine imbalance, with an increase in proinflammatory cytokines like interleukin-1β and tumor necrosis factor-α within the central nervous system, is a hallmark of human immunodeficiency virus (HIV)-1 infection. We previously reported that HIV-1 infection is linked to upregulation of CXCL8 in brain tissues and human astrocytes. Chemokines play crucial roles in trafficking of leukocytes and trafficking of HIV-1-infected across the blood-brain barrier play an important role in HIV-1 central nervous system disease. In the post-antiretroviral therapy era, low level of productive replication of HIV-1 in brain is a critical component of neuropathogenesis regulation. The present study investigated the effect of CXCL8 on productive infection of HIV-1 in human monocytes-derived macrophages (MDM) and primary human microglia. RESULTS Human MDM and microglia were infected with the blood or brain derived HIV-1 isolates, HIV-1ADA or HIV-1JRFL. Treatment with CXCL8 significantly upregulated HIV-1p24 levels in supernatants of both HIV-1-infected MDM as well as microglia. In addition, the formation of 2-long terminal repeat (LTR) circles, a measure of viral genome integration, was significantly higher in CXCL8-treated, HIV-1-infected MDM and microglia. Transient transfection of U937 cells with HIV-1 LTR luciferase reporter construct resulted in increased promoter activity when treated with CXCL8. Moreover, increased nuclear translocation of nuclear factor-κB was seen in HIV-1-infected MDM following CXCL8 treatment. Blocking CXCL8 receptors CXCR1 and CXCR2 abrogated the CXCL8-mediated enhanced HIV-1 replication. CONCLUSION Our results show that CXCL8 mediates productive infection of HIV-1 in MDM and microglia via receptors CXCR1 and CXCR2. These results demonstrate that CXCL8 exerts its downstream effects by increasing translocation of nuclear factor-κB into the nucleus, thereby promoting HIV-1 LTR activity.
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Affiliation(s)
- Manmeet K. Mamik
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, Texas, United States of America
| | - Anuja Ghorpade
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, Texas, United States of America
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Thrombospondin 1 activates the macrophage Toll-like receptor 4 pathway. Cell Mol Immunol 2013; 10:506-12. [PMID: 23954950 DOI: 10.1038/cmi.2013.32] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 06/07/2013] [Accepted: 06/08/2013] [Indexed: 12/25/2022] Open
Abstract
Previously, we demonstrated that macrophages from thrombospondin 1 (TSP1)-deficient mice have a reduced inflammatory phenotype, suggesting that TSP1 plays a role in macrophage activation. In this study, we determined how TSP1 regulates macrophage function. We found that recombinant or purified platelet human TSP1 treatment stimulated tumor-necrosis factor (TNF)-α expression in bone marrow-derived macrophages in a time- and dose-dependent manner. Toll-like receptor 4 (TLR4) expression (at the mRNA and protein levels) and nuclear factor-kappaB (NF-κB) activity were also stimulated by TSP1 treatment. The TSP1-mediated increase in TNF-α production was abolished in TLR4-deficient macrophages, suggesting that TSP1 activates macrophages through a TLR4-dependent pathway. TSP1 also stimulated TLR4 activation in macrophages in vivo. Furthermore, TSP1-mediated macrophage activation was attenuated by using a peptide or an antibody to block the association between TSP1 and CD36. Taken together, these data suggest that the stimulation of the macrophage TLR4 pathway by TSP1 is partially mediated by the interaction of TSP1 with its receptor, CD36.
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