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Balogun AO, Weigel MM, Estévez E, Armijos RX. Chronic Occupational Exposure to Traffic Pollution Is Associated with Increased Carotid Intima-Media Thickness in Healthy Urban Traffic Control Police. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:6701. [PMID: 37681841 PMCID: PMC10487607 DOI: 10.3390/ijerph20176701] [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: 07/07/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023]
Abstract
Urban traffic officers in many low- and middle-income countries are exposed to high levels of traffic-related air pollutants (TRAP) while working vehicle control on heavily congested streets. The impact of chronic TRAP exposure on the cardiovascular health, including the carotid intima-media thickness (CIMT), of this outdoor occupational group remains unclear. This cross-sectional study compared the average mean and maximum CIMT measurements of two groups of relatively young, healthy traffic police (32 ± 7 years; 77% male) in Quito, Ecuador, who were without clinical evidence of serious cardiovascular or other disease. Previously published background data on PM10 (a TRAP surrogate) indicated that street levels of the pollutant were several orders of magnitude higher at the street intersections worked by traffic police compared to those working only in an office. Accordingly, officers permanently assigned to daily traffic control duties requiring them to stand 0-3 m from heavily trafficked street intersections were assigned to the high exposure group (n = 61). The control group (n = 54) consisted of officers from the same organization who were permanently assigned to office duties inside an administration building. Mean and maximum CIMT were measured with ultrasound. General linear models were used to compare the CIMT measurements of the high exposure and control groups, adjusting for covariates. The adjusted average mean and maximum CIMT measures of the high exposure group were increased by 11.5% and 10.3%, respectively, compared to the control group (p = 0.0001). These findings suggest that chronic occupational exposure to TRAP is associated with increased CIMT in traffic police. This is important since even small increases in arterial thickening over time may promote earlier progression to clinical disease and increased premature mortality risk.
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Affiliation(s)
- Abdulrazak O. Balogun
- Department of Safety and Occupational Health Applied Sciences, Keene State College, Keene, NH 03431, USA;
| | - M. Margaret Weigel
- Department of Environmental & Occupational Health, School of Public Health, Indiana University-Bloomington, 1025 E. 7th Street, Bloomington, IN 47403, USA;
- Global Environmental Health Research Laboratory, Indiana University-Bloomington School of Public Health, Bloomington, IN 47405, USA
- Center for Latin American & Caribbean Studies, Indiana University-Bloomington, Bloomington, IN 47405, USA
- IU Center for Global Health Equity, Indiana University, 702 Rotary Circle, Indianapolis, IN 46202, USA
| | - Edmundo Estévez
- Centro de Biomedicina, Universidad Central del Ecuador, Quito 170129, Ecuador;
- Postgraduate Program in Public Health, Universidad Autónoma Regional de los Andes (UNIANDES), Ambato 180150, Ecuador
| | - Rodrigo X. Armijos
- Department of Environmental & Occupational Health, School of Public Health, Indiana University-Bloomington, 1025 E. 7th Street, Bloomington, IN 47403, USA;
- Global Environmental Health Research Laboratory, Indiana University-Bloomington School of Public Health, Bloomington, IN 47405, USA
- Center for Latin American & Caribbean Studies, Indiana University-Bloomington, Bloomington, IN 47405, USA
- IU Center for Global Health Equity, Indiana University, 702 Rotary Circle, Indianapolis, IN 46202, USA
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Yang G, Zeng XH, Geng XR, Liu JQ, Mo LH, Luo XQ, Liu HZ, Zhang YY, Yang LT, Huang QM, Xiao XJ, Liu J, Xu LZ, Liu DB, Liu XY, Liu ZQ, Yang PC. The transcription factor XBP1 in dendritic cells promotes the T H2 cell response in airway allergy. Sci Signal 2023; 16:eabm9454. [PMID: 37368951 DOI: 10.1126/scisignal.abm9454] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 06/06/2023] [Indexed: 06/29/2023]
Abstract
Dendritic cells (DCs) that express T cell immunoglobulin domain molecule-4 (TIM4), a cell surface receptor for phosphatidylserine, induce T helper 2 (TH2) cell responses and allergic reactions. We elucidated the role of the transcription factor X-box-binding protein-1 (XBP1) in the induction of the TH2 cell response through its role in generating TIM4+ DCs. We found that XBP1 was required for TIM4 mRNA and protein expression in airway DCs in response to the cytokine interleukin-2 (IL-2) and that this pathway was required for TIM4 expression on DCs in response to the allergens PM2.5 and Derf1. The IL-2-XBP1-TIM4 axis in DCs contributed to Derf1/PM2.5-induced, aberrant TH2 cell responses in vivo. An interaction between the guanine nucleotide exchange factor Son of sevenless-1 (SOS1) and the GTPase RAS promoted XBP1 and TIM4 production in DCs. Targeting the XBP1-TIM4 pathway in DCs prevented or alleviated experimental airway allergy. Together, these data suggest that XBP1 is required for TH2 cell responses by inducing the development of TIM4+ DCs, which depends on the IL-2-XBP1-SOS1 axis. This signaling pathway provides potential therapeutic targets for the treatment of TH2 cell-dependent inflammation or allergic diseases.
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Affiliation(s)
- Gui Yang
- Department of Otolaryngology, Head and Neck Surgery, Longgang Central Hospital, Shenzhen, China
| | - Xian-Hai Zeng
- Longgang ENT Hospital, Shenzhen, China
- Shenzhen ENT Institute, Shenzhen, China
| | - Xiao-Rui Geng
- Longgang ENT Hospital, Shenzhen, China
- Shenzhen ENT Institute, Shenzhen, China
| | - Jiang-Qi Liu
- Longgang ENT Hospital, Shenzhen, China
- Shenzhen ENT Institute, Shenzhen, China
| | - Li-Hua Mo
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China
- Institute of Allergy and Immunology, Shenzhen University School of Medicine and State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Xiang-Qian Luo
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Hua-Zhen Liu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China
- Institute of Allergy and Immunology, Shenzhen University School of Medicine and State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China
| | - Yuan-Yi Zhang
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China
- Institute of Allergy and Immunology, Shenzhen University School of Medicine and State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China
| | - Li-Teng Yang
- Department of General Practice Medicine and Respirology, Third Affiliated Hospital, Shenzhen University School of Medicine, Shenzhen, China
| | - Qin-Miao Huang
- Department of General Practice Medicine and Respirology, Third Affiliated Hospital, Shenzhen University School of Medicine, Shenzhen, China
| | - Xiao-Jun Xiao
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China
- Institute of Allergy and Immunology, Shenzhen University School of Medicine and State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China
| | - Jie Liu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China
- Institute of Allergy and Immunology, Shenzhen University School of Medicine and State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China
| | - Ling-Zhi Xu
- Department of Immunology, Weifang Medical University, Weifang, China
| | - Da-Bo Liu
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Xiao-Yu Liu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China
- Institute of Allergy and Immunology, Shenzhen University School of Medicine and State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China
| | - Zhi-Qiang Liu
- Longgang ENT Hospital, Shenzhen, China
- Shenzhen ENT Institute, Shenzhen, China
| | - Ping-Chang Yang
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China
- Institute of Allergy and Immunology, Shenzhen University School of Medicine and State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China
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Darras-Hostens M, Achour D, Muntaner M, Grare C, Zarcone G, Garçon G, Amouyel P, Zerimech F, Matran R, Guidice JML, Dauchet L. Short-term and residential exposure to air pollution: Associations with inflammatory biomarker levels in adults living in northern France. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:154985. [PMID: 35398417 DOI: 10.1016/j.scitotenv.2022.154985] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 03/24/2022] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
INTRODUCTION Air pollution has an impact on health, and low-grade inflammation might be one of the underlying mechanisms. The objective of the present study of adults from northern France was to assess the associations between short-term and residential exposure to air pollution and levels of various inflammatory biomarkers. METHODS The cross-sectional Enquête Littoral Souffle Air Biologie Environnement (ELISABET) study was conducted from 2011 to 2013 in the Lille and Dunkirk urban areas of northern France. Here, we evaluated the associations between PM10, NO2 and O3 exposure (on the day of the blood sample collection and on the day before, and the mean annual residential level) and levels of the inflammatory biomarkers high-sensitivity C-reactive protein (hsCRP), interleukin (IL)-1β, IL-6, IL-8, IL-10, IL-17A, IL-22, and tumor necrosis factor α. RESULTS We assessed 3074 participants for the association with hsCRP and a subsample of 982 non-smokers from Lille for the association with plasma cytokine levels. A 10 μg/m3 increment in PM10 and NO2 levels on the day of sample collection and on the day before was associated with a higher hsCRP concentration (3.43% [0.68; 6.25] and 1.75% [-1.96; 5.61], respectively, whereas a 10 μg/m3 increment in O3 was associated with lower hsCRP concentration (-1.2% [-3.95; 1.64]). The associations between mean annual exposure and the hsCRP level were not significant. Likewise, the associations between exposure and plasma cytokine levels were not statistically significant. CONCLUSION Short-term exposure to air pollution was associated with higher serum hsCRP levels in adult residents of two urban areas in northern France. Our results suggest that along with other factors, low-grade inflammation might explain the harmful effects of air pollution on health.
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Affiliation(s)
- Marion Darras-Hostens
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Djamal Achour
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Manon Muntaner
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Céline Grare
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Gianni Zarcone
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Guillaume Garçon
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Philippe Amouyel
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Farid Zerimech
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Régis Matran
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Jean-Marc Lo Guidice
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Luc Dauchet
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
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Wang B, Chen H, Xenaki D, Liao J, Cowie C, Oliver BG. Differential inflammatory and toxic effects in-vitro of wood smoke and traffic-related particulate matter from Sydney, Australia. CHEMOSPHERE 2021; 272:129616. [PMID: 33482518 DOI: 10.1016/j.chemosphere.2021.129616] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/05/2021] [Accepted: 01/08/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND It is well known that PM2.5 generated by traffic or burning wood is pro-inflammatory and induces various adverse health outcomes in humans. In Sydney, New South Wales, Australia, the main anthropogenic contributors to particulate matter (PM) air pollution are wood combustion heaters, on-road vehicles, and coal-fired power stations. However, the relative toxicity of these local sources has not to date been investigated. METHOD PM2.5 was collected on filters from the same sampling site in Liverpool, one suburb of Sydney. According to the positive matrix factorisation and collection season, filters were representative of either day with high traffic-related air pollution (TRAP), wood smoke, or both TRAP and woodsmoke (mixed air pollution). The elemental composition of the PM was assessed by accelerator-based ion beam analysis techniques (i.e. PIXE & PIGE) and size by Dynamic Light Scattering. Toxicity and inflammation were assessed in-vitro in human bronchial epithelial cells by measuring interleukin-6 (IL-6), interleukin-8 (IL-8) release, and MTT. RESULTS Mixed air pollution (TRAP/wood smoke) PM had more nanometer (nm) sized PM than the other two groups. Using an in-vitro model of the lungs, the mixed air pollution PM was the most toxic, whereas the PM from woodsmoke induced greater IL-6 release than TRAP PM. There was no difference in the induction of IL-8 between the three sources of PM. CONCLUSION Marked differences occur in the cellular response to PM from different sources, with differences in both toxicity and inflammation.
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Affiliation(s)
- Baoming Wang
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia; Woolcock Institute of Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Hui Chen
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Dia Xenaki
- Woolcock Institute of Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Jiayan Liao
- Institute for Biomedical Materials and Devices, Faculty of Science, University of Technology Sydney, NSW, 2007, Australia
| | - Christine Cowie
- Woolcock Institute of Medical Research, The University of Sydney, Sydney, NSW, Australia; South West Sydney Clinical School, University of New South Wales, Liverpool, New South Wales, Australia; Ingham Institute of Applied Medical Research, Liverpool, New South Wales, Australia
| | - Brian G Oliver
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia; Woolcock Institute of Medical Research, The University of Sydney, Sydney, NSW, Australia.
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Sun Y, Huang J, Zhao Y, Xue L, Li H, Liu Q, Cao H, Peng W, Guo C, Xie Y, Liu X, Li B, Liu K, Wu S, Zhang L. Inflammatory cytokines and DNA methylation in healthy young adults exposure to fine particulate matter: A randomized, double-blind crossover trial of air filtration. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122817. [PMID: 32516725 DOI: 10.1016/j.jhazmat.2020.122817] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 04/04/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
Benefits of indoor air filtration in heavily polluted areas are not fully understood. This study aims to examine whether short-term air filtration intervention could attenuate the hazards from acute exposure to fine particulate matter (PM2.5), and investigate the potential impact on inflammatory cytokines and DNA methylation. A randomized, double-blind crossover trial of true or sham indoor air filtration was conducted among 29 healthy young adults in Beijing, China. Each episode covered a typical air pollution wave, and 38 cytokines and DNAm of 20 genes were measured at 3 time points: pre-smog, during smog, and post-smog. Linear mixed-effect models were used to evaluate the associations. The indoor PM2.5 concentration with true filtration was 67.8 % lower than sham filtration (13.8 μg/m3vs. 42.8 μg/m3). Air filtration was significantly associated with the decreases in 9 cytokines, from 6.61 % to 21.24 %. PM2.5 exposure was significantly associated with elevated levels of 9 cytokines and changed methylation at 7 CpG sites. Notably, PM2.5 was significantly associated with GM-CSF, sCD40L, MCP-1, and FGF-2, as well as methylation in corresponding genes, but no mediation effect was observed. This trial suggested that indoor air filtration might attenuate the adverse effects of PM2.5 exposure through changing cytokines and DNAm.
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Affiliation(s)
- Yanyan Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, and Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, PR China
| | - Jing Huang
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, 100191, PR China
| | - Yan Zhao
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, 100191, PR China
| | - Lijun Xue
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, 100191, PR China
| | - Hongyu Li
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, 100191, PR China
| | - Qisijing Liu
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, 100191, PR China
| | - Han Cao
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, and Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, PR China
| | - Wenjuan Peng
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, and Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, PR China
| | - Chunyue Guo
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, and Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, PR China
| | - Yunyi Xie
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, and Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, PR China
| | - Xiaohui Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, and Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, PR China
| | - Bingxiao Li
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, and Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, PR China
| | - Kuo Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, and Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, PR China
| | - Shaowei Wu
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, 100191, PR China; Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, Peking University Health Science Center, Beijing, 100191, PR China.
| | - Ling Zhang
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, and Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, 100069, PR China.
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Wang WCV, Lin TH, Liu CH, Su CW, Lung SCC. Fusion of Environmental Sensing on PM 2.5 and Deep Learning on Vehicle Detecting for Acquiring Roadside PM 2.5 Concentration Increments. SENSORS (BASEL, SWITZERLAND) 2020; 20:E4679. [PMID: 32825023 PMCID: PMC7506711 DOI: 10.3390/s20174679] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/15/2020] [Accepted: 08/16/2020] [Indexed: 12/02/2022]
Abstract
Traffic emission is one of the major contributors to urban PM2.5, an important environmental health hazard. Estimating roadside PM2.5 concentration increments (above background levels) due to vehicles would assist in understanding pedestrians' actual exposures. This work combines PM2.5 sensing and vehicle detecting to acquire roadside PM2.5 concentration increments due to vehicles. An automatic traffic analysis system (YOLOv3-tiny-3l) was applied to simultaneously detect and track vehicles with deep learning and traditional optical flow techniques, respectively, from governmental cameras that have low resolutions of only 352 × 240 pixels. Evaluation with 20% of the 2439 manually labeled images from 23 cameras showed that this system has 87% and 84% of the precision and recall rates, respectively, for five types of vehicles, namely, sedan, motorcycle, bus, truck, and trailer. By fusing the research-grade observations from PM2.5 sensors installed at two roadside locations with vehicle counts from the nearby governmental cameras analyzed by YOLOv3-tiny-3l, roadside PM2.5 concentration increments due to on-road sedans were estimated to be 0.0027-0.0050 µg/m3. This practical and low-cost method can be further applied in other countries to assess the impacts of vehicles on roadside PM2.5 concentrations.
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Affiliation(s)
- Wen-Cheng Vincent Wang
- Research Center for Environmental Changes, Academia Sinica, Nangang, Taipei 115, Taiwan; (W.-C.V.W.); (C.-H.L.)
| | - Tai-Hung Lin
- Department of Information & Computer Engineering, Chung Yuan Christian University, Taoyuan 320, Taiwan;
| | - Chun-Hu Liu
- Research Center for Environmental Changes, Academia Sinica, Nangang, Taipei 115, Taiwan; (W.-C.V.W.); (C.-H.L.)
| | - Chih-Wen Su
- Department of Information & Computer Engineering, Chung Yuan Christian University, Taoyuan 320, Taiwan;
| | - Shih-Chun Candice Lung
- Research Center for Environmental Changes, Academia Sinica, Nangang, Taipei 115, Taiwan; (W.-C.V.W.); (C.-H.L.)
- Department of Atmospheric Sciences, National Taiwan University, Taipei 106, Taiwan
- Institute of Environmental Health, National Taiwan University, Taipei 106, Taiwan
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Sanchez B, Zhou X, Gardiner AS, Herbert G, Lucas S, Morishita M, Wagner JG, Lewandowski R, Harkema JR, Shuey C, Campen MJ, Zychowski KE. Serum-borne factors alter cerebrovascular endothelial microRNA expression following particulate matter exposure near an abandoned uranium mine on the Navajo Nation. Part Fibre Toxicol 2020; 17:29. [PMID: 32611356 PMCID: PMC7329534 DOI: 10.1186/s12989-020-00361-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 06/22/2020] [Indexed: 12/19/2022] Open
Abstract
Background Commercial uranium mining on the Navajo Nation has subjected communities on tribal lands in the Southwestern United States to exposures from residual environmental contamination. Vascular health effects from these ongoing exposures are an active area of study. There is an association between residential mine-site proximity and circulating biomarkers in residents, however, the contribution of mine-site derived wind-blown dusts on vascular and other health outcomes is unknown. To assess neurovascular effects of mine-site derived dusts, we exposed mice using a novel exposure paradigm, the AirCARE1 mobile inhalation laboratory, located 2 km from an abandoned uranium mine, Claim 28 in Blue Gap Tachee, AZ. Mice were exposed to filtered air (FA) (n = 6) or concentrated ambient particulate matter (CAPs) (n = 5) for 2 wks for 4 h per day. Results To assess miRNA differential expression in cultured mouse cerebrovascular cells following particulate matter (PM) exposure (average: 96.6 ± 60.4 μg/m3 for all 4 h exposures), the serum cumulative inflammatory potential (SCIP) assay was employed. MiRNA sequencing was then performed in cultured mouse cerebrovascular endothelial cells (mCECs) to evaluate transcriptional changes. Results indicated 27 highly differentially expressed (p < 0.01) murine miRNAs, as measured in the SCIP assay. Gene ontology (GO) pathway analysis revealed notable alterations in GO enrichment related to the cytoplasm, protein binding and the cytosol, while significant KEGG pathways involved pathways in cancer, axon guidance and Wnt signaling. Expression of these 27 identified, differentially expressed murine miRNAs were then evaluated in the serum. Nine of these miRNAs (~ 30%) were significantly altered in the serum and 8 of those miRNAs demonstrated the same directional change (either upregulation or downregulation) as cellular miRNAs, as measured in the SCIP assay. Significantly upregulated miRNAs in the CAPs exposure group included miRNAs in the let-7a family. Overexpression of mmu-let-7a via transfection experiments, suggested that this miRNA may mediate mCEC barrier integrity following dust exposure. Conclusions Our data suggest that mCEC miRNAs as measured in the SCIP assay show similarity to serum-borne miRNAs, as approximately 30% of highly differentially expressed cellular miRNAs in the SCIP assay were also found in the serum. While translocation of miRNAs via exosomes or an alternative mechanism is certainly possible, other yet-to-be-identified factors in the serum may be responsible for significant miRNA differential expression in endothelium following inhaled exposures. Additionally, the most highly upregulated murine miRNAs in the CAPs exposure group were in the let-7a family. These miRNAs play a prominent role in cell growth and differentiation and based on our transfection experiments, mmu-let-7a may contribute to cerebrovascular mCEC alterations following inhaled dust exposure.
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Affiliation(s)
- Bethany Sanchez
- Department of Pharmaceutical Sciences, University of New Mexico-Health Sciences Center, Albuquerque, NM, 87131, USA
| | - Xixi Zhou
- Department of Pharmaceutical Sciences, University of New Mexico-Health Sciences Center, Albuquerque, NM, 87131, USA
| | - Amy S Gardiner
- Department of Cell Biology and Physiology, University of New Mexico-Health Sciences Center, Albuquerque, NM, 87131, USA
| | - Guy Herbert
- Department of Pharmaceutical Sciences, University of New Mexico-Health Sciences Center, Albuquerque, NM, 87131, USA
| | - Selita Lucas
- Department of Pharmaceutical Sciences, University of New Mexico-Health Sciences Center, Albuquerque, NM, 87131, USA
| | - Masako Morishita
- Department of Family Medicine, College of Human Medicine, Michigan State University, East Lansing, MI, USA
| | - James G Wagner
- Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Ryan Lewandowski
- Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Jack R Harkema
- Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Chris Shuey
- Southwest Research and Information Center, Albuquerque, NM, USA
| | - Matthew J Campen
- Department of Pharmaceutical Sciences, University of New Mexico-Health Sciences Center, Albuquerque, NM, 87131, USA
| | - Katherine E Zychowski
- College of Nursing, MSC09 53601 University of New Mexico-Health Sciences Center, Albuquerque, NM, 87131, USA.
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Riaz H, Syed BM, Laghari Z, Pirzada S. Analysis of inflammatory markers in apparently healthy automobile vehicle drivers in response to exposure to traffic pollution fumes. Pak J Med Sci 2020; 36:657-662. [PMID: 32494251 PMCID: PMC7260889 DOI: 10.12669/pjms.36.4.2025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Objective: This study aimed to evaluate pattern of markers of inflammation in apparently healthy drivers who exposed to traffic fumes. Methods: This cross-sectional study was conducted from June 2016 to January 2017 at Liaquat University of Medical & Health Sciences (LUMHS), Jamshoro. It looked into the effects of traffic pollutants on markers of inflammation including CRP, Leukocytes count, IL-6, TNF-α, TNF-β of healthy human volunteers. Eighty-seven, apparently healthy, non-smoking automobile vehicle drivers, having daily contact of traffic exhaust for at least six hours, aged between 18-40 years recruited for this study. Levels of traffic-generated pollutants P.M2.5, P.M10, NOx were recorded in different areas of Hyderabad City. Results: P.M2.5 found to be positively correlated with markers of inflammation including IL-6 (rs = 0.99), TNF-α (rs = 0.41), CRP mg/dl (rs = 0.99) , neutrophils (rs = 0.29), lymphocytes (rs = 0.31), eosinophils (rs = 0.20), monocytes (rs = 0.42) and basophils (rs = 0.16). Positive correlation present among IL-6 (rs = 0.21), TNF-α (rs = 0.49) and CRP mg/dl (rs = 0.22) % (rs = -0.31), Leukocytes (rs = 0.14) neutrophils (rs = 0.31), lymphocytes (rs = 0.21), monocytes (rs = 0.50), basophils (rs = 0.17) with P.M10. NOx showed positive correlation with IL-6 (rs = 0.22), TNF-α (rs = 0.48), CRP (rs = 0.22), neutrophils (rs = 0.31), lymphocytes (rs = 0.13), basophils (rs = 0.17) and monocytes (rs = 0.48). Conclusion: Findings of our study suggest that almost all markers of inflammation are positively correlated with traffic pollutants and this condition might raise the risk of systemic diseases.
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Affiliation(s)
- Hina Riaz
- Dr. Hina Riaz, MBBS, Lecturer, Department of Physiology, Liaquat University of Medical & Health Sciences (LUMHS), Jamshoro, Pakistan
| | - Binafsha Manzoor Syed
- Dr. Binafsha Manzoor Syed, MBBS, PhD, Director Medical Research Centre, Director Clinical Research Division, Director ORIC, Liaquat University of Medical & Health Sciences (LUMHS), Jamshoro, Pakistan
| | - Zulfiqar Laghari
- Prof. Dr. Zulfiqar Laghari, PhD, Chairperson, Department of Physiology, University of Sindh, Jamshoro, Pakistan
| | - Suleman Pirzada
- Dr. Suleman Peerzada, MBBS, PhD, Assistant Professor, Department of Molecular Biology and Genetics, Liaquat University of Medical & Health Sciences (LUMHS), Jamshoro, Pakistan
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Jhun I, Kim J, Cho B, Gold DR, Schwartz J, Coull BA, Zanobetti A, Rice MB, Mittleman MA, Garshick E, Vokonas P, Bind MA, Wilker EH, Dominici F, Suh H, Koutrakis P. Synthesis of Harvard Environmental Protection Agency (EPA) Center studies on traffic-related particulate pollution and cardiovascular outcomes in the Greater Boston Area. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2019; 69:900-917. [PMID: 30888266 PMCID: PMC6650311 DOI: 10.1080/10962247.2019.1596994] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 03/11/2019] [Indexed: 05/24/2023]
Abstract
The association between particulate pollution and cardiovascular morbidity and mortality is well established. While the cardiovascular effects of nationally regulated criteria pollutants (e.g., fine particulate matter [PM2.5] and nitrogen dioxide) have been well documented, there are fewer studies on particulate pollutants that are more specific for traffic, such as black carbon (BC) and particle number (PN). In this paper, we synthesized studies conducted in the Greater Boston Area on cardiovascular health effects of traffic exposure, specifically defined by BC or PN exposure or proximity to major roadways. Large cohort studies demonstrate that exposure to traffic-related particles adversely affect cardiac autonomic function, increase systemic cytokine-mediated inflammation and pro-thrombotic activity, and elevate the risk of hypertension and ischemic stroke. Key patterns emerged when directly comparing studies with overlapping exposure metrics and population cohorts. Most notably, cardiovascular risk estimates of PN and BC exposures were larger in magnitude or more often statistically significant compared to those of PM2.5 exposures. Across multiple exposure metrics (e.g., short-term vs. long-term; observed vs. modeled) and different population cohorts (e.g., elderly, individuals with co-morbidities, young healthy individuals), there is compelling evidence that BC and PN represent traffic-related particles that are especially harmful to cardiovascular health. Further research is needed to validate these findings in other geographic locations, characterize exposure errors associated with using monitored and modeled traffic pollutant levels, and elucidate pathophysiological mechanisms underlying the cardiovascular effects of traffic-related particulate pollutants. Implications: Traffic emissions are an important source of particles harmful to cardiovascular health. Traffic-related particles, specifically BC and PN, adversely affect cardiac autonomic function, increase systemic inflammation and thrombotic activity, elevate BP, and increase the risk of ischemic stroke. There is evidence that BC and PN are associated with greater cardiovascular risk compared to PM2.5. Further research is needed to elucidate other health effects of traffic-related particles and assess the feasibility of regulating BC and PN or their regional and local sources.
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Affiliation(s)
- Iny Jhun
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA
- Harvard Medical School, Boston, MA
| | - Jina Kim
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA
| | | | - Diane R. Gold
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA
- Harvard Medical School, Boston, MA
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA
| | - Joel Schwartz
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA
| | - Brent A. Coull
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Antonella Zanobetti
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA
| | - Mary B. Rice
- Division of Pulmonary, Critical Care and Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Murray A. Mittleman
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
- Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Boston, MA
| | - Eric Garshick
- Harvard Medical School, Boston, MA
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA
- Pulmonary, Allergy, Sleep and Critical Care Medicine, Veterans Affairs Boston Healthcare System, Boston, MA
| | - Pantel Vokonas
- Veterans Affairs Normative Aging Study, Veterans Affairs Boston Healthcare System, Boston, MA
- Department of Preventive Medicine and Epidemiology, Boston University School of Medicine, Boston, MA
| | - Marie-Abele Bind
- Faculty of Arts and Sciences, Science Center, Harvard University, Cambridge, MA
| | - Elissa H. Wilker
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA
- Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Boston, MA
- Sanofi Genzyme, Cambridge, MA
| | - Francesca Dominici
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Helen Suh
- Tufts University, Department of Civil and Environmental Engineering, Medford, MA
| | - Petros Koutrakis
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA
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