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Shi Y, Zhao T, Yang X, Sun B, Li Y, Duan J, Sun Z. PM 2.5-induced alteration of DNA methylation and RNA-transcription are associated with inflammatory response and lung injury. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:908-921. [PMID: 30308865 DOI: 10.1016/j.scitotenv.2018.09.085] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/09/2018] [Accepted: 09/06/2018] [Indexed: 06/08/2023]
Abstract
The mechanisms of systemic pulmonary inflammation and toxicity of fine particulate matter (PM2.5) exposure remains unclear. The current study investigated the inflammatory response and lung toxicity of PM2.5 in rats following intratracheal instillation of PM2.5. After repeated (treated every 3 days for 30 days) PM2.5 exposure, total protein (TP), lactate dehydrogenase (LDH) activity and inflammatory cytokines including interleukin 6 (IL-6), interleukin 1β (IL-1β) and tumor necrosis factor α (TNF-α) levels in bronchoalveolar lavage fluid (BALF) were markedly elevated. The expression levels of IL-6, IL-1β, TNF-α and NF-κB in rat lung tissue and BEAS-2B cells were significantly upregulated after PM2.5 exposure. Histopathological evaluation suggested that the major pathological changes were alveolar wall thickening and inflammatory cell infiltration of the lungs. Genome wide DNA methylation and RNA-transcription analysis was performed on human bronchial epithelial cells (BEAS-2B) to explore the potential mechanisms in vitro. PM2.5 induced genome wide DNA methylation and transcription changes. Differentially methylated CpGs were located in gene promoter region linked with CpG islands. Integrated analysis with DNA methylation and transcription data indicated a clear bias toward transcriptional alteration by differential methylation. Disease ontology of differentially methylated and expressed genes addressed their prominent role in respiratory disease. Functional enrichment revealed their involvement in inflammation or immune response, cellular community, cellular motility, cell growth, development and differentiation, signal transduction and responses to exogenous stimuli. Gene expression validation of ACTN4, CXCL1, MARK2, ABR, PSEN1, PSMA3, PSMD1 verified their functional participation in critical biological processes and supported the microarray bioinformatics analysis. Collectively, our data shows that PM2.5 induced genome wide methylome and transcriptome alterations that could be involved in pulmonary toxicity and pathological process of respiratory disease, providing new insight into the toxicity mechanisms of PM2.5.
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Affiliation(s)
- Yanfeng Shi
- Department of Toxicology and Sanitary Chemistry, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Tong Zhao
- Department of Toxicology and Sanitary Chemistry, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Xiaozhe Yang
- Department of Toxicology and Sanitary Chemistry, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Baiyang Sun
- Department of Toxicology and Sanitary Chemistry, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Yang Li
- Department of Toxicology and Sanitary Chemistry, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Junchao Duan
- Department of Toxicology and Sanitary Chemistry, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China.
| | - Zhiwei Sun
- Department of Toxicology and Sanitary Chemistry, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China.
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Torres P, Ferreira J, Monteiro A, Costa S, Pereira MC, Madureira J, Mendes A, Teixeira JP. Air pollution: A public health approach for Portugal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 643:1041-1053. [PMID: 30189521 DOI: 10.1016/j.scitotenv.2018.06.281] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/19/2018] [Accepted: 06/22/2018] [Indexed: 06/08/2023]
Abstract
At the global level, several epidemiological studies have conclusively pointed out the associations between short-term exposure to air pollution and acute health effects, and long-term exposure with adverse health effects such as premature mortality from severe respiratory and cardiovascular diseases. This study intended to characterize exposures and their adverse health effects. Three independent sets of vectors were analyzed on a nationwide level and annual basis: air pollutant emissions, ambient air concentrations and health indicators of the period 2009 to 2015. The emissions analysis, for the studied pollutants, pointed out the main findings: (i) Lisbon Metropolitan Area presents the most problematic region with regard to the emissions of all the pollutants under study; (ii) the regions of the Alentejo and Algarve showed reduced emissions of the studied pollutants compared to other parts of the country; (iii) Northern regions PM10 concentrations decreased during the two years in analysis. Regarding the analysis of air quality, it was concluded that: (i) regarding ozone, concentration shown a decreasing trend throughout the country; (ii) nitrogen dioxide and particulate matter, concentrations demonstrated an increasing trend in most of the northern part of the country; (iii) the regions of Alentejo and Lisbon Metropolitan Area showed increasing trends for sulfur dioxide and fine particles for the evaluated period. Decreasing trends in mortality associated with cardiovascular and respiratory causes are found mainly in the Alentejo and Algarve regions. In comparison, the North, Central regions, as well as, Lisbon Metropolitan Area exhibited higher mortality values related to this health indicators.
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Affiliation(s)
- Pedro Torres
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Joana Ferreira
- CESAM & Dept of Environment and Planning (CESAM), Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Alexandra Monteiro
- CESAM & Dept of Environment and Planning (CESAM), Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Solange Costa
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, no 135, 4050-600 Porto, Portugal; Environmental Health Department, National Health Institute Dr. Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal
| | - Maria Carmo Pereira
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Joana Madureira
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, no 135, 4050-600 Porto, Portugal
| | - Ana Mendes
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, no 135, 4050-600 Porto, Portugal; Environmental Health Department, National Health Institute Dr. Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal.
| | - João Paulo Teixeira
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, no 135, 4050-600 Porto, Portugal; Environmental Health Department, National Health Institute Dr. Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal
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103
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Yang Y, Guo Y, Qian ZM, Ruan Z, Zheng Y, Woodward A, Ai S, Howard SW, Vaughn MG, Ma W, Wu F, Lin H. Ambient fine particulate pollution associated with diabetes mellitus among the elderly aged 50 years and older in China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 243:815-823. [PMID: 30243190 DOI: 10.1016/j.envpol.2018.09.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 08/29/2018] [Accepted: 09/10/2018] [Indexed: 06/08/2023]
Abstract
The linkage between ambient air pollution exposure and occurrence of diabetes mellitus is not well defined. This study examined the association between exposure to fine particles (PM2.5) and the prevalence of diabetes among Chinese elderly people. We surveyed 11,504 adults aged ≥50 years in China, estimated the annual concentrations of ambient PM2.5 using a satellite-based model of aerosol optical depth information. We employed a generalized mixed effects model to examine the association between PM2.5 and the prevalence of diabetes and explored potential effect modifiers. We estimated diabetes burden attributable to ambient PM2.5 if the observed association is indeed causal. The diabetes prevalence among the participants was 6.5% (n = 745). Our analysis found a statistically significant association between PM2.5 and diabetes. The adjusted odds ratio was 1.27 (95% confidence interval (CI), 1.12, 1.43) for each 10 μg/m3 increment in ambient PM2.5. Stratified analyses found a lower association among the participants with higher consumption of fruit. We estimated that 22.02% (95% CI: 8.59%, 43.29%) of the diabetes cases could be ascribable to ambient PM2.5. Our finding suggests that PM2.5 exposures could increase the risk of diabetes, and if causal, could be responsible for substantial burden of diabetes among the Chinese elderly; and higher intakes of fruit might reduce the harmful effects of PM2.5, however, due to the limitation of the cross-sectional study design, more studies are warranted to confirm this observation.
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Affiliation(s)
- Yin Yang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Yanfei Guo
- Shanghai Municipal Centre for Disease Control and Prevention, Shanghai, China
| | - Zhengmin Min Qian
- College for Public Health & Social Justice, Saint Louis University, St. Louis, Missouri, USA
| | - Zengliang Ruan
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Yang Zheng
- Shanghai Municipal Centre for Disease Control and Prevention, Shanghai, China
| | - Alistair Woodward
- School of Population Health, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Siqi Ai
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Steven W Howard
- College for Public Health & Social Justice, Saint Louis University, St. Louis, Missouri, USA
| | - Michael G Vaughn
- College for Public Health & Social Justice, Saint Louis University, St. Louis, Missouri, USA
| | - Wenjun Ma
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Fan Wu
- Shanghai Municipal Centre for Disease Control and Prevention, Shanghai, China.
| | - Hualiang Lin
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China.
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104
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Yang X, Feng L, Zhang Y, Shi Y, Liang S, Zhao T, Sun B, Duan J, Sun Z. Integrative analysis of methylome and transcriptome variation of identified cardiac disease-specific genes in human cardiomyocytes after PM 2.5 exposure. CHEMOSPHERE 2018; 212:915-926. [PMID: 30286548 DOI: 10.1016/j.chemosphere.2018.09.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 07/29/2018] [Accepted: 09/02/2018] [Indexed: 06/08/2023]
Abstract
PM2.5 exposure is strongly linked to cardiac disease. Subtle epigenetic or transcriptional alterations induced by PM2.5 might contribute to pathogenesis and disease susceptibility of cardiac disease. It is still a major challenge to identify biological targets in human genetics. Human cardiomyocytes AC16 was chosen as cell model. Epigenetic effect of PM2.5 in AC16 was analyzed using Illumina HumanMethylation 450 K BeadChip. Meanwhile the transcriptomic profiling was performed by Affymetrix® microarray. PM2.5 induced genome wide variation of DNA methylation pattern, including differentially methylated CpGs in promoter region. Then gene ontology analysis demonstrated differentially methylated genes were significantly clustered in pathways in regulation of apoptotic process, cell death and metabolic pathways, or associated with ion binding and shuttling. Correlation of the methylome and transcriptome revealed a clear bias toward transcriptional suppression by hypermethylation or activation by hypomethylation. Identified 386 genes which exhibited both differential methylation and expression were functionally associated with pathways including cardiovascular system development, regulation of blood vessel size, vasculature development, p53 pathway, AC-modulating/inhibiting GPCRs pathway and cellular response to metal ion/inorganic substance. Disease ontology demonstrated their prominent role in cardiac diseases and identified 14 cardiac-specific genes (ANK2, AQP1 et al.). PPI network analysis revealed 6 novel genes (POLR2I, LEP, BRIX1, ADCY6, INSL3, RARS). Those genes were then verified by qRT-PCR. Thus, in AC16, PM2.5 alters the methylome and transcriptome of genes might be relevant for PM2.5-/heart-associated diseases. Result gives additional insight in PM2.5 relative cardiac diseases/associated genes and the potential mechanisms that contribute to PM2.5 related cardiac disease.
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Affiliation(s)
- Xiaozhe Yang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Lin Feng
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Yannan Zhang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Yanfeng Shi
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Shuang Liang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Tong Zhao
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Baiyang Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Junchao Duan
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China.
| | - Zhiwei Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China.
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105
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Losacco C, Perillo A. Particulate matter air pollution and respiratory impact on humans and animals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:33901-33910. [PMID: 30284710 DOI: 10.1007/s11356-018-3344-9] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
Air pollution is now fully acknowledged to be a public health problem and a social issue. Particulate matter (PM) concentration has been linked with several clinical manifestations of pulmonary and cardiovascular diseases and is associated with morbidity and mortality induced by respiratory diseases both in human and animals. Current research on airborne particle-induced health effects investigates the critical characteristics of particulate matter that determine their biological effects. Scientific evidence assessed that the size of the airborne particles and their surface area determine the potential to elicit inflammatory injury, oxidative damage, and other biological effects. Thus, the present review paper aims to summarize the current evidences and findings on the effect of air pollution on lung function in both humans and animals.
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Affiliation(s)
- Caterina Losacco
- Department of Veterinary Medicine, University of Bari 'Aldo Moro', 70010, Valenzano, Bari, Italy.
| | - Antonella Perillo
- Department of Veterinary Medicine, University of Bari 'Aldo Moro', 70010, Valenzano, Bari, Italy
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106
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Nardini C, Moreau JF, Gensous N, Ravaioli F, Garagnani P, Bacalini MG. The epigenetics of inflammaging: The contribution of age-related heterochromatin loss and locus-specific remodelling and the modulation by environmental stimuli. Semin Immunol 2018; 40:49-60. [PMID: 30396810 DOI: 10.1016/j.smim.2018.10.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/12/2018] [Accepted: 10/15/2018] [Indexed: 12/12/2022]
Abstract
A growing amount of evidences indicates that inflammaging - the chronic, low grade inflammation state characteristic of the elderly - is the result of genetic as well as environmental or stochastic factors. Some of these, such as the accumulation of senescent cells that are persistent during aging or accompany its progression, seem to be sufficient to initiate the aging process and to fuel it. Others, like exposure to environmental compounds or infections, are temporary and resolve within a (relatively) short time. In both cases, however, a cellular memory of the event can be established by means of epigenetic modulation of the genome. In this review we will specifically discuss the relationship between epigenetics and inflammaging. In particular, we will show how age-associated epigenetic modifications concerned with heterochromatin loss and gene-specific remodelling, can promote inflammaging. Furthermore, we will recall how the exposure to specific nutritional, environmental and microbial stimuli can affect the rate of inflammaging through epigenetic mechanisms, touching also on the recent insight given by the concept of trained immunity.
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Affiliation(s)
- Christine Nardini
- Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden; CNR IAC "Mauro Picone", Roma, Italy; Personal Genomics S.r.l., Verona, Italy
| | - Jean-Francois Moreau
- University of Bordeaux, CNRS-UMR5164, 146 rue Léo Saignat, 33076 Bordeaux, France; CHU Bordeaux, Place Amélie Raba-Léon, Bordeaux, France
| | - Noémie Gensous
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Francesco Ravaioli
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
| | - Paolo Garagnani
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy; Clinical Chemistry, Department of Laboratory Medicine, Karolinska Institutet at Huddinge University Hospital, Stockholm, Sweden; Laboratory of Cell Biology, Rizzoli Orthopaedic Institute, Bologna, Italy; CNR Institute of Molecular Genetics, Unit of Bologna, Bologna, Italy; Center for Applied Biomedical Research (CRBA), St. Orsola-Malpighi University Hospital, Bologna, Italy.
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107
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Commodore A, Mukherjee N, Chung D, Svendsen E, Vena J, Pearce J, Roberts J, Arshad SH, Karmaus W. Frequency of heavy vehicle traffic and association with DNA methylation at age 18 years in a subset of the Isle of Wight birth cohort. ENVIRONMENTAL EPIGENETICS 2018; 4:dvy028. [PMID: 30697444 PMCID: PMC6343046 DOI: 10.1093/eep/dvy028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 12/04/2018] [Accepted: 12/07/2018] [Indexed: 05/08/2023]
Abstract
Assessment of changes in DNA methylation (DNA-m) has the potential to identify adverse environmental exposures. To examine DNA-m among a subset of participants (n = 369) in the Isle of Wight birth cohort who reported variable near resident traffic frequencies. We used self-reported frequencies of heavy vehicles passing by the homes of study subjects as a proxy measure for TRAP, which were: never, seldom, 10 per day, 1-9 per hour and >10 per hour. Methylation of cytosine-phosphate-guanine (CpG) dinucleotide sequences in the DNA was assessed from blood samples collected at age 18 years (n = 369) in the F1 generation. We conducted an epigenome wide association study to examine CpGs related to the frequency of heavy vehicles passing by subjects' homes, and employed multiple linear regression models to assess potential associations. We repeated some of these analysis in the F2 generation (n = 140). Thirty-five CpG sites were associated with heavy vehicular traffic. After adjusting for confounders, we found 23 CpGs that were more methylated, and 11 CpGs that were less methylated with increasing heavy vehicular traffic frequency among all subjects. In the F2 generation, 2 of 31 CpGs were associated with traffic frequencies and the direction of the effect was the same as in the F1 subset while differential methylation of 7 of 31 CpG sites correlated with gene expression. Our findings reveal differences in DNA-m in participants who reported higher heavy vehicular traffic frequencies when compared to participants who reported lower frequencies.
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Affiliation(s)
- A Commodore
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - N Mukherjee
- Division of Epidemiology, Biostatistics, and Environmental Health, University of Memphis, Memphis, TN 38152, USA
| | - D Chung
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - E Svendsen
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - J Vena
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - J Pearce
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - J Roberts
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - S H Arshad
- Faculty of Medicine, University of Southampton, Southampton, UK
- The David Hide Asthma and Allergy Research Centre, Isle of Wight, UK
| | - W Karmaus
- Division of Epidemiology, Biostatistics, and Environmental Health, University of Memphis, Memphis, TN 38152, USA
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108
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Chen MJ, Yang PH, Hsieh MT, Yeh CH, Huang CH, Yang CM, Lin GM. Machine learning to relate PM2.5 and PM10 concentrations to outpatient visits for upper respiratory tract infections in Taiwan: A nationwide analysis. World J Clin Cases 2018; 6:200-206. [PMID: 30148148 PMCID: PMC6107525 DOI: 10.12998/wjcc.v6.i8.200] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/07/2018] [Accepted: 06/27/2018] [Indexed: 02/05/2023] Open
Abstract
AIM To examine the accuracy of machine learning to relate particulate matter (PM) 2.5 and PM10 concentrations to upper respiratory tract infections (URIs).
METHODS Daily nationwide and regional outdoor PM2.5 and PM10 concentrations collected over 30 consecutive days obtained from the Taiwan Environment Protection Administration were the inputs for machine learning, using multilayer perceptron (MLP), to relate to the subsequent one-week outpatient visits for URIs. The URI data were obtained from the Centers for Disease Control datasets in Taiwan between 2009 and 2016. The testing used the middle month dataset of each season (January, April, July and October), and the training used the other months’ datasets. The weekly URI cases were classified by tertile as high, moderate, and low volumes.
RESULTS Both PM concentrations and URI cases peak in winter and spring. In the nationwide data analysis, MLP machine learning can accurately relate the URI volumes of the elderly (89.05% and 88.32%, respectively) and the overall population (81.75% and 83.21%, respectively) with the PM2.5 and PM10 concentrations. In the regional data analyses, greater accuracy is found for PM2.5 than for PM10 for the elderly, particularly in the Central region (78.10% and 74.45%, respectively), whereas greater accuracy is found for PM10 than for PM2.5 for the overall population, particularly in the Northern region (73.19% and 63.04%, respectively).
CONCLUSION Short-term PM2.5 and PM10 concentrations were accurately related to the subsequent occurrence of URIs by using machine learning. Our findings suggested that the effects of PM2.5 and PM10 on URI may differ by age, and the mechanism needs further evaluation.
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Affiliation(s)
- Mei-Juan Chen
- Department of Electrical Engineering, National Dong Hwa University, Hualien 974, Taiwan
| | - Pei-Hsuan Yang
- Department of Electrical Engineering, National Dong Hwa University, Hualien 974, Taiwan
| | - Mi-Tren Hsieh
- Department of Electrical Engineering, National Dong Hwa University, Hualien 974, Taiwan
| | - Chia-Hung Yeh
- Department of Electrical Engineering, National Taiwan Normal University, Taipei 106, Taiwan
- Department of Electrical Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Chih-Hsiang Huang
- Department of Electrical Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Chieh-Ming Yang
- Department of Electrical Engineering, National Dong Hwa University, Hualien 974, Taiwan
| | - Gen-Min Lin
- Department of Electrical Engineering, National Dong Hwa University, Hualien 974, Taiwan
- Department of Medicine, Hualien Armed Forces General Hospital, Hualien 971, Taiwan
- Departments of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan
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109
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Garshick E, Grady ST, Hart JE, Coull BA, Schwartz JD, Laden F, Moy ML, Koutrakis P. Indoor black carbon and biomarkers of systemic inflammation and endothelial activation in COPD patients. ENVIRONMENTAL RESEARCH 2018; 165:358-364. [PMID: 29783085 PMCID: PMC6007002 DOI: 10.1016/j.envres.2018.05.010] [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] [Received: 02/28/2018] [Revised: 05/09/2018] [Accepted: 05/10/2018] [Indexed: 05/21/2023]
Abstract
RATIONALE Evidence linking traffic-related particle exposure to systemic effects in chronic obstructive lung disease (COPD) patients is limited. OBJECTIVES Assess relationships between indoor black carbon (BC), a tracer of traffic-related particles, and plasma biomarkers of systemic inflammation and endothelial activation. METHODS BC was measured by reflectance in fine particle samples over a mean of 7.6 days in homes of 85 COPD patients up to 4 times seasonally over a year. After the completion of sampling, plasma C-reactive protein (CRP), interleukin-6 (IL-6), and soluble vascular adhesion molecule-1 (sVCAM-1) were measured. Current smokers and homes with major sources of BC were excluded; therefore, indoor BC was primarily a measure of infiltrated outdoor BC. Mixed effects regression models with a random intercept for each participant were used to assess BC effects at different times (1-9 days before phlebotomy) and in the multi-day sample. RESULTS Measured median BC was 0.19 µg/m3 (interquartile range, IQR=0.22 µg/m3). Adjusting for season, race, age, BMI, heart disease, diabetes, ambient temperature, relative humidity, a recent cold or similar illness, and blood draw time, there was a positive relationship between BC and CRP. The largest effect size was for BC averaged over the previous seven days (11.8% increase in CRP per IQR; 95%CI = 1.8-22.9). Effects were greatest among non-statin users and persons with diabetes. There were positive effects of BC on IL-6 only in non-statin users. There were no associations with sVCAM-1. CONCLUSIONS These results demonstrate exposure-response relationships between indoor BC with biomarkers of systemic inflammation in COPD patients, with stronger relationships in persons not using statins and with diabetes.
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Affiliation(s)
- Eric Garshick
- Pulmonary, Allergy, Sleep, and Critical Care Medicine Section, Medical Service, VA Boston Healthcare System, Boston, MA, USA; Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA.
| | - Stephanie T Grady
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA; Research and Development Service, VA Boston Healthcare System, Boston, MA, USA
| | - Jaime E Hart
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Brent A Coull
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Joel D Schwartz
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Francine Laden
- Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Marilyn L Moy
- Pulmonary, Allergy, Sleep, and Critical Care Medicine Section, Medical Service, VA Boston Healthcare System, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Petros Koutrakis
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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Zhao J, Zhang B, Yang S, Mei H, Qian Z, Liang S, Zhang Y, Hu K, Tan Y, Xian H, Belue R, Jordan SS, Xu S, Zheng T, Du Y. Maternal exposure to ambient air pollutant and risk of oral clefts in Wuhan, China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 238:624-630. [PMID: 29614471 DOI: 10.1016/j.envpol.2018.03.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 02/26/2018] [Accepted: 03/15/2018] [Indexed: 06/08/2023]
Abstract
Maternal exposure to ambient air pollution has been related to oral clefts in offspring; however, the epidemiologic evidence is equivocal. Especially, the association between high levels of exposure to ambient air pollution during pregnancy and oral clefts remains unclear. The objective of this study was to evaluate whether high levels of maternal exposure to PM2.5, PM10, O3, CO and SO2 are related to increased risk of oral clefts in Wuhan, China. A population-based study was conducted using cohort of 105,927 live-born infants, fetal deaths, and stillbirths during a two-year period from 2011 to 2013. For each participant, weekly and monthly averages of daily mean concentrations for each pollutant were estimated. Multiple logistic regression analyses were constructed to quantify the adjusted odds ratios (aORs) for the relationship between each air pollutant and oral clefts while controlling for key covariates. Using monthly averages, a cleft lip with or without cleft palate (CLP) was associated with PM2.5 (aORs 2nd month = 1.34, CI:1.19-1.49; aORs 3rd month=1.14, CI:1.02-1.28), PM10 (aORs 2nd month = 1.11, CI:1.00-1.23) and CO (aORs 2nd month = 1.31, CI:1.14-1.51; aORs 3rd month = 1.17, CI:1.03-1.33). A cleft palate only (CPO) was associated with PM2.5 (aORs 2nd month = 1.24, CI: 1.03-1.48), and O3 (aORs 2nd month = 1.21, CI: 1.03-1.42; aORs 3rd month = 1.18, CI: 1.02-1.37). Our findings reveal an association between air pollutants exposure and the risk of oral clefts. Future studies are needed to confirm these associations, and clarify the causality related to specific pollutants during the most relevant vulnerable exposure time windows for oral clefts during pregnancy.
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Affiliation(s)
- Jinzhu Zhao
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China; Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei Province, 430030, China
| | - Bin Zhang
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei Province, 430030, China
| | - Shaoping Yang
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei Province, 430030, China
| | - Hui Mei
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei Province, 430030, China
| | - Zhengmin Qian
- Department of Epidemiology & Biostatistics, College for Public Health and Social Justice, Saint Louis University, Saint Louis, MO, USA
| | - Shengwen Liang
- Wuhan Environmental Monitoring Center, Wuhan, Hubei Province, 430000, China
| | - Yiming Zhang
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei Province, 430030, China
| | - Ke Hu
- Wuhan Environmental Monitoring Center, Wuhan, Hubei Province, 430000, China
| | - Yafei Tan
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei Province, 430030, China
| | - Hong Xian
- Department of Epidemiology & Biostatistics, College for Public Health and Social Justice, Saint Louis University, Saint Louis, MO, USA
| | - Rhonda Belue
- Department of Health Management and Policy, College for Public Health and Social Justice, Saint Louis University, Saint Louis, MO, USA
| | - Savannah S Jordan
- Department of Epidemiology & Biostatistics, College for Public Health and Social Justice, Saint Louis University, Saint Louis, MO, USA
| | - Shunqing Xu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Tongzhang Zheng
- Department of Epidemiology, School of Public Health, Brown University, Providence, RI, USA
| | - Yukai Du
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China.
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Holz O, Heusser K, Müller M, Windt H, Schwarz K, Schindler C, Tank J, Hohlfeld JM, Jordan J. Airway and systemic inflammatory responses to ultrafine carbon black particles and ozone in older healthy subjects. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:576-588. [PMID: 29693510 DOI: 10.1080/15287394.2018.1463331] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 04/06/2018] [Indexed: 06/08/2023]
Abstract
Increased adverse health effects in older subjects due to exposure to ambient air pollutants may be related to the inflammatory response induced by these contaminants. The aim of this study was to assess airway and systemic inflammatory responses in older healthy subjects to a controlled experimental exposure with spark-generated elemental carbon black ultrafine particles (cbUFPs) and ozone (O3). Twenty healthy subjects, age 52-75 years, were exposed on three occasions separated by at least 8 weeks. The exposures to filtered air (FA), to cbUFP (50 μg/m3), or to cbUFP in combination with 250 ppb ozone (cbUFP + O3) for 3 h with intermittent exercise were performed double blind, and in random order. Sputum and blood samples were collected 3.5 h after each exposure. Exposure to cbUFP + O3 significantly increased plasma club cell protein 16 (CC16), the number of sputum cells, the number and percent of sputum neutrophils, and sputum interleukin 6 and matrix metalloproteinase 9. Exposure to cbUFP alone exerted no marked effect, except for an elevation in sputum neutrophils in a subgroup of 13 subjects that displayed less than 65% sputum neutrophils after FA exposure. None of the inflammatory markers was correlated with age, and serum cardiovascular risk markers were not markedly affected by cbUFP or cbUFP + O3. Exposure to cbUFP+O3 induced a significant airway and systemic inflammatory response in older healthy volunteer subjects. The effects induced by cbUFP alone suggest that the inflammation was predominantly mediated by O3, although one cannot rule out that the interaction of cbUFP and O3 played a role.
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Affiliation(s)
- Olaf Holz
- a Clinical Airway Research , Fraunhofer ITEM , Hannover , Germany
- b Member of the German Center for Lung Research (BREATH) , Hannover , Germany
| | - Karsten Heusser
- c Hannover Medical School , Institute of Clinical Pharmacology , Hannover , Germany
| | - Meike Müller
- a Clinical Airway Research , Fraunhofer ITEM , Hannover , Germany
| | - Horst Windt
- a Clinical Airway Research , Fraunhofer ITEM , Hannover , Germany
| | | | | | - Jens Tank
- c Hannover Medical School , Institute of Clinical Pharmacology , Hannover , Germany
| | - Jens M Hohlfeld
- a Clinical Airway Research , Fraunhofer ITEM , Hannover , Germany
- b Member of the German Center for Lung Research (BREATH) , Hannover , Germany
- e Hannover Medical School , Clinic for Respiratory Medicine , Hannover , Germany
| | - Jens Jordan
- c Hannover Medical School , Institute of Clinical Pharmacology , Hannover , Germany
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112
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LEE S, REZAEI M, JEONG T. Applying Multi-modal and Correlation Analysis on Environmental Parameters and Effect on Cardiopulmonary Endurance of Gender in Elderly People. IRANIAN JOURNAL OF PUBLIC HEALTH 2018; 47:546-552. [PMID: 29900139 PMCID: PMC5996332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Accepted: 09/08/2017] [Indexed: 11/23/2022]
Abstract
BACKGROUND The aim of this study was to investigate the correlation and interaction between the air pollution's components with cardiopulmonary endurance of elderly people in eight regions by using a multi-modal and correlation analysis. METHODS The data of air pollution was collected in eight selected regions in 2013 to 2015. At the same time, total number of 880 male and female, older than 65 year-olds, were investigated based on the cardiopulmonary endurance measurement in the same regions. The correlation, interaction and multiple linear regressions was tested between the air pollution components in each region and cardiopulmonary endurance of elderly people, also between the air pollution components in each region and gender, respectively. In this case, the regression analysis for both hypotheses was conducted. RESULTS There was a correlation between the level of air pollution and cardiopulmonary endurance, especially for the carbon monoxide which has a strong effect, it was followed by the effect of sulfur dioxide and fine dust, meanwhile nitrogen dioxide seems not to be effective for this measurement test. Furthermore, it was highly unlikely that gender was a significant factor for the correlation between air pollution and cardiopulmonary endurance. CONCLUSION The importance and correlation between air pollution and cardiopulmonary capacity is a critical determinant for the public health of a society, while at the same time having a serious impact on certain age groups. Provided that the factor of gender is highly unlikely to modify this impact, it is necessary to study the potential of other factors.
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Affiliation(s)
- Sungju LEE
- Dept. of Computer Convergence Software, Korea University, Seoul, Republic of Korea
| | - Mehdi REZAEI
- College of Business, CHA University, Gyeonggi-do, Republic of Korea
| | - Taikyeong JEONG
- College of Business, CHA University, Gyeonggi-do, Republic of Korea
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113
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Choi J, Oh JY, Lee YS, Min KH, Hur GY, Lee SY, Kang KH, Shim JJ. Harmful impact of air pollution on severe acute exacerbation of chronic obstructive pulmonary disease: particulate matter is hazardous. Int J Chron Obstruct Pulmon Dis 2018; 13:1053-1059. [PMID: 29681728 PMCID: PMC5881527 DOI: 10.2147/copd.s156617] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Introduction Particulate matter and air pollution in Korea are becoming worse. There is a lack of research regarding the impact of particulate matter on patients with COPD. Therefore, the purpose of this study was to investigate the effects of various air pollution factors, including particulate matter, on the incidence rate of severe acute exacerbations of COPD (AECOPD) events. Methods We analyzed the relationship between air pollutants and AECOPD events that required hospitalization at Guro Hospital in Korea from January 1, 2015 to May 31, 2017. We used general linear models with Poisson distribution and log-transformation to obtain adjusted relative risk (RR). We conducted further analysis through the Comprehensive Air-quality Index (CAI) that is used in Korea. Results Among various other air pollutants, particulate matter was identified as a major source of air pollution in Korea. When the CAI score was over 50, the incidence rate of severe AECOPD events was statistically significantly higher [RR 1.612, 95% CI, 1.065-2.440, P=0.024]. Additionally, the particulate matter levels 3 days before hospitalization were statistically significant [RR 1.003, 95% CI, 1.001-1.005, P=0.006]. Conclusion Particulate matter and air pollution increase the incidence rate of severe AECOPD events. COPD patients should be cautioned against outdoor activities when particulate matter levels are high.
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Affiliation(s)
- Juwhan Choi
- Division of Respiratory, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jee Youn Oh
- Division of Respiratory, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Young Seok Lee
- Division of Respiratory, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Kyung Hoon Min
- Division of Respiratory, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Gyu Young Hur
- Division of Respiratory, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Sung Yong Lee
- Division of Respiratory, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Kyung Ho Kang
- Division of Respiratory, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jae Jeong Shim
- Division of Respiratory, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
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114
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Jiang CL, He SW, Zhang YD, Duan HX, Huang T, Huang YC, Li GF, Wang P, Ma LJ, Zhou GB, Cao Y. Air pollution and DNA methylation alterations in lung cancer: A systematic and comparative study. Oncotarget 2018; 8:1369-1391. [PMID: 27901495 PMCID: PMC5352062 DOI: 10.18632/oncotarget.13622] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 11/09/2016] [Indexed: 12/20/2022] Open
Abstract
The lung cancer incidence in the Xuanwei and neighboring region, Yunnan, China, is among the highest in China and is attributed to severe air pollution with high benzo(a)pyrene levels. We systematically and comparatively analyzed DNA methylation alterations at genome and gene levels in Xuanwei lung cancer tissues and cell lines, as well as benzo(a)pyrene-treated cells and mouse samples. We obtained a comprehensive dataset of genome-wide cytosine-phosphate-guanine island methylation in air pollution-related lung cancer samples. Benzo(a)pyrene exposure induced multiple alterations in DNA methylation and in mRNA expressions of DNA methyltransferases and ten-11 translocation proteins; these alterations partially occurred in Xuanwei lung cancer. Furthermore, benzo(a)pyrene-induced DKK2 and EN1 promoter hypermethylation and LPAR2 promoter hypomethylation led to down-regulation and up-regulation of the genes, respectively; the down-regulation of DKK2 and EN1 promoted the cellular proliferation. Thus, DNA methylation alterations induced by benzo(a)pyrene contribute partially to abnormal DNA methylation in air pollution-related lung cancer, and these DNA methylation alterations may affect the development and progression of lung cancer. Additionally, vitamin C and B6 can reduce benzo(a)pyrene-induced DNA methylation alterations and may be used as chemopreventive agents for air pollution-related lung cancer.
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Affiliation(s)
- Cheng-Lan Jiang
- Laboratory of Molecular and Experimental Pathology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Sciences, University of Chinese Academy of Sciences, Kunming 650223, China
| | - Shui-Wang He
- Laboratory of Molecular and Experimental Pathology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Yun-Dong Zhang
- Laboratory of Molecular and Experimental Pathology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,School of Life Sciences, University of Science and Technology of China, Hefei 230026, China
| | - He-Xian Duan
- Laboratory of Molecular and Experimental Pathology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Tao Huang
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yun-Chao Huang
- Department of Thoracic and Cardiovascular Surgery, The Third Affiliated Hospital of Kunming Medical University, (Yunnan Tumor Hospital), Kunming 650106, China
| | - Gao-Feng Li
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, (Yunnan Tumor Hospital), Kunming 650106, China
| | - Ping Wang
- Department of Thoracic Surgery, The First People's Hospital of Yunnan Province, Kunming 650032, China
| | - Li-Ju Ma
- Clinical Medicine Research Center, The First Affiliated Hospital of Kunming Medical University, Kunming 650332, China
| | - Guang-Biao Zhou
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yi Cao
- Laboratory of Molecular and Experimental Pathology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
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115
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Abstract
PURPOSE OF REVIEW Worldwide demographic changes occurring in a relatively short period have led to a growing interest in the determinants of aging "successfully" and how to promote a healthier old age. As environmental exposures such as ambient air pollution are believed to play a role in the process of aging, they might represent one of the pathways turning potential successful agers to unsuccessful agers. We aimed to critically review the current epidemiological evidence of the associations between chronic exposure to ambient air pollution and several key determinants of unsuccessful aging and to identify specific populations of unsuccessful agers that are potentially more vulnerable to air pollution's health effects. RECENT FINDINGS Epidemiologic evidence supports the association between air pollution and increased risk for several major chronic diseases, cognitive impairment, frailty, and decreased longevity-all important determinants of unsuccessful aging-as well as evidence for higher vulnerability among frail populations. However, several methodological shortcomings, including possible publication bias, lack of use of an adequate indicator of unsuccessful aging, limitations in exposure assessment, and residual confounding particularly due to socioeconomic status, hinder inference of causal relationship at this stage. Future studies should use constructs such as frailty index to estimate successful aging, as well as integrate time activity patterns into the exposure assessment metric. Additionally, studies in low- and middle-income countries are needed.
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116
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Argacha JF, Bourdrel T, van de Borne P. Ecology of the cardiovascular system: A focus on air-related environmental factors. Trends Cardiovasc Med 2018; 28:112-126. [DOI: 10.1016/j.tcm.2017.07.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 07/09/2017] [Accepted: 07/29/2017] [Indexed: 12/18/2022]
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117
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Martin EM, Fry RC. Environmental Influences on the Epigenome: Exposure- Associated DNA Methylation in Human Populations. Annu Rev Public Health 2018; 39:309-333. [PMID: 29328878 DOI: 10.1146/annurev-publhealth-040617-014629] [Citation(s) in RCA: 371] [Impact Index Per Article: 61.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
DNA methylation is the most well studied of the epigenetic regulators in relation to environmental exposures. To date, numerous studies have detailed the manner by which DNA methylation is influenced by the environment, resulting in altered global and gene-specific DNA methylation. These studies have focused on prenatal, early-life, and adult exposure scenarios. The present review summarizes currently available literature that demonstrates a relationship between DNA methylation and environmental exposures. It includes studies on aflatoxin B1, air pollution, arsenic, bisphenol A, cadmium, chromium, lead, mercury, polycyclic aromatic hydrocarbons, persistent organic pollutants, tobacco smoke, and nutritional factors. It also addresses gaps in the literature and future directions for research. These gaps include studies of mixtures, sexual dimorphisms with respect to environmentally associated methylation changes, tissue specificity, and temporal stability of the methylation marks.
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Affiliation(s)
- Elizabeth M Martin
- Department of Environmental Sciences and Engineering, and Curriculum in Toxicology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina 27599, USA; ,
| | - Rebecca C Fry
- Department of Environmental Sciences and Engineering, and Curriculum in Toxicology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina 27599, USA; ,
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118
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Aging, inflammation and the environment. Exp Gerontol 2017; 105:10-18. [PMID: 29275161 DOI: 10.1016/j.exger.2017.12.015] [Citation(s) in RCA: 246] [Impact Index Per Article: 35.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 12/17/2017] [Accepted: 12/19/2017] [Indexed: 12/16/2022]
Abstract
The aging process is driven by interrelated mechanisms that lead to the emergence of characteristic phenotypes that include changes in body composition, energy production and utilization imbalance, homeostatic dysregulation, and neurodegeneration and loss of neuroplasticity. Mainstream theories of aging all recognize that the aging phenotypes result from an imbalance between stressors and stress buffering mechanisms and a resultant loss of compensatory reserve leading to accumulation of unrepaired damage. This in turn results in increased disease susceptibility, reduced functional reserve, reduced healing capacity and stress resistance, unstable health and finally failure to thrive. The resultant physical and cognitive decline that culminates with the frailty syndrome is a tipping point of healthspan and implies a high risk of system decompensation and death. Preserving physical and cognitive function is the main focus of geriatric and gerontological research, but it is important to recognize that accomplishing this goal requires a profound understanding of the molecular, cellular and physiological mechanisms that ultimately determine functional changes. In this context, the proinflammatory state of aging plays a major role. Longitudinal studies have shown that with aging most individuals tend to develop a chronic low-grade proinflammatory state, and that such a state is a strong risk factor for multimorbidity, physical and cognitive disability, frailty and death. A number of environmental factors may play an important role in modifying the proinflammatory state. We explore processes and mechanisms of aging that affect human biology and the possible links of inflammation and the environment to aging, especially those related to metabolism. We point out that longitudinal studies with a life course approach are needed to gain further mechanistic insight on the processes that lead to functional decline with aging, and the role played in this process by inflammation and environmental challenges.
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119
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Ransome Y, Slopen N, Karlsson O, Williams DR. Elevated inflammation in association with alcohol abuse among Blacks but not Whites: results from the MIDUS biomarker study. J Behav Med 2017; 41:374-384. [PMID: 29230616 DOI: 10.1007/s10865-017-9905-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/23/2017] [Indexed: 12/14/2022]
Abstract
Some studies document racial disparities in self-reported health associated with alcohol use and abuse. However, few studies examined biomarkers that underlie the onset of alcohol-related chronic diseases. We investigated whether the association between alcohol abuse and five biomarkers of inflammation (CRP, IL-6, fibrinogen, E-selectin, sICAM-1) vary between Black and White Americans aged 35 to 84 (n = 1173) from the Midlife in the United States Biomarker Study. Multivariable Ordinary Least Squares regressions were used to assess Black-White differences in the association between alcohol abuse and the biomarkers. Race moderated the association between alcohol abuse and CRP (b = 0.56, SE = 0.28, p = 0.048), IL-6 (b = 0.65, SE = 0.22, p = 0.004), and a composite inflammation score (b = 0.014, SE = 0.07, p = 0.041). These findings potentially shed light for why alcohol has a stronger negative association with poorer health for Blacks compared to Whites. Analysis should be replicated in larger prospective cohorts.
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Affiliation(s)
- Yusuf Ransome
- Department of Social and Behavioral Sciences, Yale School of Public Health, 60 College Street, 403, New Haven, CT, 06510, USA.
| | - Natalie Slopen
- Department of Epidemiology and Biostatistics, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD, 20742, USA
| | - Oskar Karlsson
- Center for Molecular Medicine, Karolinska Institute, Solna, Sweden.,Department of Pharmaceutical Biosciences, Uppsala University, Box 591, 751 24, Uppsala, Sweden
| | - David R Williams
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
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Boraschi D, Italiani P, Palomba R, Decuzzi P, Duschl A, Fadeel B, Moghimi SM. Nanoparticles and innate immunity: new perspectives on host defence. Semin Immunol 2017; 34:33-51. [DOI: 10.1016/j.smim.2017.08.013] [Citation(s) in RCA: 183] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 08/22/2017] [Indexed: 02/07/2023]
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121
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Mirowsky JE, Carraway MS, Dhingra R, Tong H, Neas L, Diaz-Sanchez D, Cascio W, Case M, Crooks J, Hauser ER, Elaine Dowdy Z, Kraus WE, Devlin RB. Ozone exposure is associated with acute changes in inflammation, fibrinolysis, and endothelial cell function in coronary artery disease patients. Environ Health 2017; 16:126. [PMID: 29157250 PMCID: PMC5697214 DOI: 10.1186/s12940-017-0335-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 10/23/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND Air pollution is a major risk factor for cardiovascular disease, of which ozone is a major contributor. Several studies have found associations between ozone and cardiovascular morbidity, but the results have been inconclusive. We investigated associations between ozone and changes across biological pathways associated with cardiovascular disease. METHODS Using a panel study design, 13 participants with coronary artery disease were assessed for markers of systemic inflammation, heart rate variability and repolarization, lipids, blood pressure, and endothelial function. Daily measurements of ozone and particulate matter (PM2.5) were obtained from central monitoring stations. Single (ozone) and two-pollutant (ozone and PM2.5) models were used to assess percent changes in measurements per interquartile ranges of pollutants. RESULTS Per interquartile increase in ozone, changes in tissue plasminogen factor (6.6%, 95% confidence intervals (CI) = 0.4, 13.2), plasminogen activator inhibitor-1 (40.5%, 95% CI = 8.7, 81.6), neutrophils (8.7% 95% CI = 1.5, 16.4), monocytes (10.2%, 95% CI = 1.0, 20.1), interleukin-6 (15.9%, 95% CI = 3.6, 29.6), large-artery elasticity index (-19.5%, 95% CI = -34.0, -1.7), and the baseline diameter of the brachial artery (-2.5%, 95% CI = -5.0, 0.1) were observed. These associations were robust in the two-pollutant model. CONCLUSIONS We observed alterations across several pathways associated with cardiovascular disease in 13 coronary artery disease patients following ozone exposures, independent of PM2.5. The results support the biological plausibility of ozone-induced cardiovascular effects. The effects were found at concentrations below the EPA National Ambient Air Quality Standards for both ozone and PM2.5.
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Affiliation(s)
- Jaime E. Mirowsky
- Department of Chemistry, SUNY College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210 USA
- Curriculum in Toxicology, University of North Carolina, Chapel Hill, NC USA
| | - Martha Sue Carraway
- Department of Medicine, Pulmonary and Critical Care Medicine, Durham VA Medical Center, Durham, NC USA
| | - Radhika Dhingra
- National Health and Environmental Effects Laboratory, US Environmental Protection Agency, Chapel Hill, NC USA
| | - Haiyan Tong
- National Health and Environmental Effects Laboratory, US Environmental Protection Agency, Chapel Hill, NC USA
| | - Lucas Neas
- National Health and Environmental Effects Laboratory, US Environmental Protection Agency, Chapel Hill, NC USA
| | - David Diaz-Sanchez
- National Health and Environmental Effects Laboratory, US Environmental Protection Agency, Chapel Hill, NC USA
| | - Wayne Cascio
- National Health and Environmental Effects Laboratory, US Environmental Protection Agency, Chapel Hill, NC USA
| | - Martin Case
- National Health and Environmental Effects Laboratory, US Environmental Protection Agency, Chapel Hill, NC USA
| | - James Crooks
- Department of Biomedical Research, National Jewish Health, Denver, CO USA
- Division of Biostatistics and Bioinformatics, National Jewish Health, Denver, CO USA
- Department of Epidemiology, Colorado School of Public Health, Denver, CO USA
| | - Elizabeth R. Hauser
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC USA
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC USA
- Cooperative Studies Program Epidemiology Center, Durham Veterans Affairs Medical Center, Durham, NC USA
| | - Z. Elaine Dowdy
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC USA
| | - William E. Kraus
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC USA
- Division of Cardiology, Department of Medicine, School of Medicine, Duke University, Durham, NC USA
| | - Robert B. Devlin
- National Health and Environmental Effects Laboratory, US Environmental Protection Agency, Chapel Hill, NC USA
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Bind MA, VanderWeele TJ, Schwartz JD, Coull BA. Quantile causal mediation analysis allowing longitudinal data. Stat Med 2017; 36:4182-4195. [PMID: 28786129 PMCID: PMC5788575 DOI: 10.1002/sim.7423] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 05/20/2017] [Accepted: 06/29/2017] [Indexed: 12/16/2022]
Abstract
Mediation analysis has mostly been conducted with mean regression models. With this approach modeling means, formulae for direct and indirect effects are based on changes in means, which may not capture effects that occur in units at the tails of mediator and outcome distributions. Individuals with extreme values of medical endpoints are often more susceptible to disease and can be missed if one investigates mean changes only. We derive the controlled direct and indirect effects of an exposure along percentiles of the mediator and outcome using quantile regression models and a causal framework. The quantile regression models can accommodate an exposure-mediator interaction and random intercepts to allow for longitudinal mediator and outcome. Because DNA methylation acts as a complex "switch" to control gene expression and fibrinogen is a cardiovascular factor, individuals with extreme levels of these markers may be more susceptible to air pollution. We therefore apply this methodology to environmental data to estimate the effect of air pollution, as measured by particle number, on fibrinogen levels through a change in interferon-gamma (IFN-γ) methylation. We estimate the controlled direct effect of air pollution on the qth percentile of fibrinogen and its indirect effect through a change in the pth percentile of IFN-γ methylation. We found evidence of a direct effect of particle number on the upper tail of the fibrinogen distribution. We observed a suggestive indirect effect of particle number on the upper tail of the fibrinogen distribution through a change in the lower percentiles of the IFN-γ methylation distribution.
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Affiliation(s)
- M-A Bind
- Department of Statistics, Harvard University, Cambridge, MA, U.S.A
| | - T J VanderWeele
- Epidemiology, Harvard School of Public Health, Boston, MA, U.S.A
| | - J D Schwartz
- Environmental Health, Harvard School of Public Health, Boston, MA, U.S.A
| | - B A Coull
- Department of Biostatistics, Harvard School of Public Health, Boston, MA, U.S.A
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Prada D, Zhong J, Colicino E, Zanobetti A, Schwartz J, Dagincourt N, Fang SC, Kloog I, Zmuda JM, Holick M, Herrera LA, Hou L, Dominici F, Bartali B, Baccarelli AA. Association of air particulate pollution with bone loss over time and bone fracture risk: analysis of data from two independent studies. Lancet Planet Health 2017; 1. [PMID: 29527596 PMCID: PMC5841468 DOI: 10.1016/s2542-5196(17)30136-5] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
BACKGROUND Air particulate matter (PM) is a ubiquitous environmental exposure associated with oxidation, inflammation, and age-related chronic disease. Whether PM is associated with loss of bone mineral density (BMD) and risk of bone fractures is undetermined. METHODS We conducted two complementary studies of: (i) long-term PM <2.5 μm (PM2.5) levels and osteoporosis-related fracture hospital admissions among 9.2 million Medicare enrollees of the Northeast/Mid-Atlantic United States between 2003-2010; (ii) long-term black carbon [BC] and PM2.5 levels, serum calcium homeostasis biomarkers (parathyroid hormone, calcium, and 25-hydroxyvitamin D), and annualized BMD reduction over a 8-year follow-up of 692 middle-aged (46.7±12.3 yrs), low-income BACH/Bone cohort participants. FINDINGS In the Medicare analysis, risk of bone fracture admissions at osteoporosis-related sites was greater in areas with higher PM2.5 levels (Risk ratio [RR] 1.041, 95% Confidence Interval [CI], 1.030, 1.051). This risk was particularly high among low-income communities (RR 1.076; 95% CI, 1.052, 1.100). In the longitudinal BACH/Bone study, baseline BC and PM2.5 levels were associated with lower serum PTH (Estimate for baseline one interquartile increase in 1-year average BC= -1.16, 95% CI -1.93, -0.38; Estimate for baseline one interquartile increase in 1-year average PM2.5= -7.39; 95%CI -14.17, -0.61). BC level was associated with higher BMD loss over time at multiple anatomical sites, including femoral neck (-0.08%/year per one interquartile increase; 95% CI -0.14, -0.02%/year) and ultradistal radius (-0.06%/year per one interquartile increase; 95% CI -0.12, -0.01%/year). INTERPRETATION Our results suggest that poor air quality is a modifiable risk factor for bone fractures and osteoporosis, especially in low-income communities.
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Affiliation(s)
- Diddier Prada
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, 665 Huntington Ave, Boston, MA, 02115, USA
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología – Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 14080, Mexico
| | - Jia Zhong
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, 665 Huntington Ave, Boston, MA, 02115, USA
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 West 168 St. New York, NY, 10032, USA
| | - Elena Colicino
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, 665 Huntington Ave, Boston, MA, 02115, USA
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 West 168 St. New York, NY, 10032, USA
| | - Antonella Zanobetti
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, 665 Huntington Ave, Boston, MA, 02115, USA
| | - Joel Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, 665 Huntington Ave, Boston, MA, 02115, USA
| | | | - Shona C. Fang
- New England Research Institute, 480 Pleasant St, Watertown, MA, 02472, USA
| | - Itai Kloog
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, 663 Beer Sheva, Israel
| | - Joseph M. Zmuda
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Michael Holick
- School of Medicine Endocrinology, Diabetes, and Nutrition, Boston University, One Silber Way, Boston, MA, 02215, USA
| | - Luis A. Herrera
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología – Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 14080, Mexico
| | - Lifang Hou
- Institute for Public Health and Medicine, Northwestern University, Chicago, ILL, 60611, USA
| | - Francesca Dominici
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Harvard University, 665 Huntington Ave, Boston, MA, 02115, USA
| | - Benedetta Bartali
- New England Research Institute, 480 Pleasant St, Watertown, MA, 02472, USA
- Corresponding authors: 1. A.A. Baccarelli, Columbia University Mailman School of Public Health, 722 West 168th Street, ARB 11th Floor 1105E, New York NY 10032, USA, . 2. B. Bartali, New England Research Institute, 480 Pleasant St, Watertown, MA, 02472, USA.
| | - Andrea A. Baccarelli
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, 665 Huntington Ave, Boston, MA, 02115, USA
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 West 168 St. New York, NY, 10032, USA
- Corresponding authors: 1. A.A. Baccarelli, Columbia University Mailman School of Public Health, 722 West 168th Street, ARB 11th Floor 1105E, New York NY 10032, USA, . 2. B. Bartali, New England Research Institute, 480 Pleasant St, Watertown, MA, 02472, USA.
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Wu XM, Basu R, Malig B, Broadwin R, Ebisu K, Gold EB, Qi L, Derby C, Green RS. Association between gaseous air pollutants and inflammatory, hemostatic and lipid markers in a cohort of midlife women. ENVIRONMENT INTERNATIONAL 2017; 107:131-139. [PMID: 28732305 PMCID: PMC5584622 DOI: 10.1016/j.envint.2017.07.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 05/04/2023]
Abstract
BACKGROUND Exposures to ambient gaseous pollutants have been linked to cardiovascular diseases (CVDs), but the biological mechanisms remain uncertain. OBJECTIVES This study examined the changes in CVD marker levels resulting from elevated exposure to ambient gaseous pollutants in midlife women. METHODS Annual repeated measurements of several inflammatory, hemostatic and lipid makers were obtained from 2306 midlife women enrolled in the longitudinal Study of Women's Health Across the Nation (SWAN) between 1999 and 2004. Ambient carbon monoxide (CO), nitrogen dioxide (NO2), and sulfur dioxide (SO2) data were assigned to each woman based on proximity of the monitoring station to her residential address. Short- and long-term exposures were calculated, and their associations with markers were examined using linear mixed-effects regression models, adjusted for demographic, health and other factors. RESULTS Short-term CO exposure was associated with increased fibrinogen, i.e., every interquartile increase of average prior one-week exposure to CO was associated with 1.3% (95% CI: 0.6%, 2.0%) increase in fibrinogen. Long-term exposures to NO2 and SO2 were associated with reduced high-density lipoproteins and apolipoprotein A1, e.g., 4.0% (1.7%, 6.3%) and 4.7% (2.8%, 6.6%) decrease per interquartile increment in prior one-year average NO2 concentration, respectively. Fine particle (PM2.5) exposure confounded associations between CO/NO2 and inflammatory/hemostatic markers, while associations with lipoproteins were generally robust to PM2.5 adjustment. CONCLUSIONS Exposures to these gas pollutants at current ambient levels may increase thrombotic potential and disrupt cholesterol metabolism, contributing to greater risk of CVDs in midlife women. Caution should be exercised in evaluating the confounding by PM2.5 exposure.
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Affiliation(s)
- Xiangmei May Wu
- Air and Climate Epidemiology Section, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, CA, USA.
| | - Rupa Basu
- Air and Climate Epidemiology Section, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, CA, USA
| | - Brian Malig
- Air and Climate Epidemiology Section, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, CA, USA
| | - Rachel Broadwin
- Air and Climate Epidemiology Section, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, CA, USA
| | - Keita Ebisu
- Air and Climate Epidemiology Section, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, CA, USA
| | - Ellen B Gold
- Department of Public Health Sciences, University of California Davis, School of Medicine, Davis, CA, USA
| | - Lihong Qi
- Department of Public Health Sciences, University of California Davis, School of Medicine, Davis, CA, USA
| | - Carol Derby
- Albert Einstein College of Medicine, Bronx, NY, USA
| | - Rochelle S Green
- Air and Climate Epidemiology Section, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, CA, USA
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125
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Egorov AI, Griffin SM, Converse RR, Styles JN, Sams EA, Wilson A, Jackson LE, Wade TJ. Vegetated land cover near residence is associated with reduced allostatic load and improved biomarkers of neuroendocrine, metabolic and immune functions. ENVIRONMENTAL RESEARCH 2017; 158:508-521. [PMID: 28709033 PMCID: PMC5941947 DOI: 10.1016/j.envres.2017.07.009] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 07/03/2017] [Accepted: 07/04/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND Greater exposure to urban green spaces has been linked to reduced risks of depression, cardiovascular disease, diabetes and premature death. Alleviation of chronic stress is a hypothesized pathway to improved health. Previous studies linked chronic stress with a biomarker-based composite measure of physiological dysregulation known as allostatic load. OBJECTIVE This study's objective was to assess the relationship between vegetated land cover near residences and allostatic load. METHODS This cross-sectional population-based study involved 206 adult residents of the Durham-Chapel Hill, North Carolina metropolitan area. Exposure was quantified using high-resolution metrics of trees and herbaceous vegetation within 500m of each residence derived from the U.S. Environmental Protection Agency's EnviroAtlas land cover dataset. Eighteen biomarkers of immune, neuroendocrine, and metabolic functions were measured in serum or saliva samples. Allostatic load was defined as a sum of potentially unhealthy biomarker values dichotomized at 10th or 90th percentile of sample distribution. Regression analysis was conducted using generalized additive models with two-dimensional spline smoothing function of geographic coordinates, weighted measures of vegetated land cover allowing decay of effects with distance, and geographic and demographic covariates. RESULTS An inter-quartile range increase in distance-weighted vegetated land cover was associated with 37% (95% Confidence Limits 46%; 27%) reduced allostatic load; significantly reduced adjusted odds of having low level of norepinephrine, dopamine, and dehydroepiandrosterone, and high level of epinephrine, fibrinogen, vascular cell adhesion molecule-1, and interleukin-8 in serum, and α-amylase in saliva; and reduced odds of previously diagnosed depression. CONCLUSIONS The observed effects of vegetated land cover on allostatic load and individual biomarkers are consistent with prevention of depression, cardiovascular disease and premature mortality.
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Affiliation(s)
- Andrey I Egorov
- National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA.
| | - Shannon M Griffin
- National Exposure Research Laboratory, United States Environmental Protection Agency, Cincinnati, OH, USA
| | - Reagan R Converse
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jennifer N Styles
- National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA; National Exposure Research Laboratory, United States Environmental Protection Agency, Cincinnati, OH, USA
| | - Elizabeth A Sams
- National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Anthony Wilson
- Association of Schools and Programs of Public Health fellow at the United States Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Laura E Jackson
- National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Timothy J Wade
- National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA
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Capra E, Toschi P, Del Corvo M, Lazzari B, Scapolo PA, Loi P, Williams JL, Stella A, Ajmone-Marsan P. Genome-Wide Epigenetic Characterization of Tissues from Three Germ Layers Isolated from Sheep Fetuses. Front Genet 2017; 8:115. [PMID: 28928767 PMCID: PMC5591608 DOI: 10.3389/fgene.2017.00115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 08/22/2017] [Indexed: 01/21/2023] Open
Abstract
DNA methylation of regulatory and growth-related genes contributes to fetal programming which is important for maintaining the correct development of three germ layers of the embryo that develope into different tissues and organs, and which persists into adult life. In this study, a preliminary epigenetic screen was performed to define genomic regions that are involved in fetal epigenome remodeling. Embryonic ectodermic tissues (origin of nervous tissue), mesenchymal tissues (origin of connective and muscular tissues), and foregut endoderm tissues (origin of epithelial tissue), from day 28 sheep fetuses were collected and the distribution of methylated CpGs was analyzed using whole-genome bisulfite sequencing. Patterns of methylation among the three tissues showed a high level of conservation of hypo-methylated CpG islands CGIs, and a consistent level of methylation in regulatory genetic elements. Analysis of tissue specific differentially methylated regions, revealed that 20% of the total CGIs differed between tissues. A proportion of the methylome was remodeled in gene bodies, 5′ UTRs and 3′ UTRs (7, 11, and 11%, respectively). Genes with overlapping differentially methylated regions in gene bodies and CGIs showed a significant enrichment for tissue morphogenesis and development pathways. The data presented here provides a “reference” for the epigenetic status of genes potentially involved in the maintenance and regulation of fetal developmental during early life, a period expected to be particularly prone to epigenetic alterations induced by environmental and nutritional stressors.
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Affiliation(s)
- Emanuele Capra
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle RicercheLodi, Italy
| | - Paola Toschi
- Facoltà di Veterinaria, Università degli Studi di TeramoTeramo, Italy
| | - Marcello Del Corvo
- Istituto di Zootecnica, Università Cattolica del Sacro CuorePiacenza, Italy.,Parco Tecnologico PadanoLodi, Italy
| | - Barbara Lazzari
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle RicercheLodi, Italy.,Parco Tecnologico PadanoLodi, Italy
| | - Pier A Scapolo
- Facoltà di Veterinaria, Università degli Studi di TeramoTeramo, Italy
| | - Pasqualino Loi
- Facoltà di Veterinaria, Università degli Studi di TeramoTeramo, Italy
| | - John L Williams
- Davies Research Centre, School of Animal and Veterinary Sciences, University of Adelaide, AdelaideSA, Australia
| | - Alessandra Stella
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle RicercheLodi, Italy.,Parco Tecnologico PadanoLodi, Italy
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Yang IV, Lozupone CA, Schwartz DA. The environment, epigenome, and asthma. J Allergy Clin Immunol 2017; 140:14-23. [PMID: 28673400 DOI: 10.1016/j.jaci.2017.05.011] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 05/10/2017] [Accepted: 05/12/2017] [Indexed: 12/21/2022]
Abstract
Asthma prevalence has been on the increase, especially in North America compared with other continents. However, the prevalence of asthma differs worldwide, and in many countries the prevalence is stable or decreasing. This highlights the influence of environmental exposures, such as allergens, air pollution, and the environmental microbiome, on disease etiology and pathogenesis. The epigenome might provide the unifying mechanism that translates the influence of environmental exposures to changes in gene expression, respiratory epithelial function, and immune cell skewing that are hallmarks of asthma. In this review we will introduce the concept of the environmental epigenome in asthmatic patients, summarize previous publications of relevance to this field, and discuss future directions.
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Affiliation(s)
- Ivana V Yang
- Department of Medicine, University of Colorado, School of Medicine, Aurora, Colo; National Jewish Health, Denver, Colo; Department of Epidemiology, Colorado School of Public Health, University of Colorado, Aurora, Colo.
| | - Catherine A Lozupone
- Department of Medicine, University of Colorado, School of Medicine, Aurora, Colo
| | - David A Schwartz
- Department of Medicine, University of Colorado, School of Medicine, Aurora, Colo; National Jewish Health, Denver, Colo; Department of Immunology, University of Colorado, Denver, Colo
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Li W, Dorans KS, Wilker EH, Rice MB, Ljungman PL, Schwartz JD, Coull BA, Koutrakis P, Gold DR, Keaney JF, Vasan RS, Benjamin EJ, Mittleman MA. Short-Term Exposure to Ambient Air Pollution and Biomarkers of Systemic Inflammation: The Framingham Heart Study. Arterioscler Thromb Vasc Biol 2017; 37:1793-1800. [PMID: 28751572 DOI: 10.1161/atvbaha.117.309799] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 07/10/2017] [Indexed: 01/05/2023]
Abstract
OBJECTIVE The objective of this study is to examine associations between short-term exposure to ambient air pollution and circulating biomarkers of systemic inflammation in participants from the Framingham Offspring and Third Generation cohorts in the greater Boston area. APPROACH AND RESULTS We included 3996 noncurrent smoking participants (mean age, 53.6 years; 54% women) who lived within 50 km from a central air pollution monitoring site in Boston, MA, and calculated the 1- to 7-day moving averages of fine particulate matter (diameter<2.5 µm), black carbon, sulfate, nitrogen oxides, and ozone before the examination visits. We used linear mixed effects models for C-reactive protein and tumor necrosis factor receptor 2, which were measured up to twice for each participant; we used linear regression models for interleukin-6, fibrinogen, and tumor necrosis factor α, which were measured once. We adjusted for demographics, socioeconomic position, lifestyle, time, and weather. The 3- to 7-day moving averages of fine particulate matter (diameter<2.5 µm) and sulfate were positively associated with C-reactive protein concentrations. A 5 µg/m3 higher 5-day moving average fine particulate matter (diameter<2.5 µm) was associated with 4.2% (95% confidence interval: 0.8, 7.6) higher circulating C-reactive protein. Positive associations were also observed for nitrogen oxides with interleukin-6 and for black carbon, sulfate, and ozone with tumor necrosis factor receptor 2. However, black carbon, sulfate, and nitrogen oxides were negatively associated with fibrinogen, and sulfate was negatively associated with tumor necrosis factor α. CONCLUSIONS Higher short-term exposure to relatively low levels of ambient air pollution was associated with higher levels of C-reactive protein, interleukin-6, and tumor necrosis factor receptor 2 but not fibrinogen or tumor necrosis factor α in individuals residing in the greater Boston area.
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Affiliation(s)
- Wenyuan Li
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Kirsten S Dorans
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Elissa H Wilker
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Mary B Rice
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Petter L Ljungman
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Joel D Schwartz
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Brent A Coull
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Petros Koutrakis
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Diane R Gold
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - John F Keaney
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Ramachandran S Vasan
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Emelia J Benjamin
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.)
| | - Murray A Mittleman
- From the Departments of Epidemiology (W.L., K.S.D., E.H.W., J.D.S., M.A.M.), Environmental Health (J.D.S., P.K., D.R.G.), and Biostatistics (B.A.C.), Harvard T.H. Chan School of Public Health, Boston, MA; Cardiovascular Epidemiology Research Unit, Division of Cardiology (W.L., K.S.D., E.H.W., P.L.L., M.A.M.) and Division of Pulmonary, Critical Care and Sleep Medicine (M.B.R.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (P.L.L.); Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (D.R.G.); Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester (J.F.K.); National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, MA (R.S.V., E.J.B.); Preventive Medicine and Cardiology Sections, Department of Medicine, Boston University School of Medicine, MA (R.S.V., E.J.B.); and Department of Epidemiology, Boston University School of Public Health, MA (R.S.V., E.J.B.).
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129
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Bourdrel T, Bind MA, Béjot Y, Morel O, Argacha JF. Cardiovascular effects of air pollution. Arch Cardiovasc Dis 2017; 110:634-642. [PMID: 28735838 DOI: 10.1016/j.acvd.2017.05.003] [Citation(s) in RCA: 236] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 05/15/2017] [Accepted: 05/17/2017] [Indexed: 12/31/2022]
Abstract
Air pollution is composed of particulate matter (PM) and gaseous pollutants, such as nitrogen dioxide and ozone. PM is classified according to size into coarse particles (PM10), fine particles (PM2.5) and ultrafine particles. We aim to provide an original review of the scientific evidence from epidemiological and experimental studies examining the cardiovascular effects of outdoor air pollution. Pooled epidemiological studies reported that a 10μg/m3 increase in long-term exposure to PM2.5 was associated with an 11% increase in cardiovascular mortality. Increased cardiovascular mortality was also related to long-term and short-term exposure to nitrogen dioxide. Exposure to air pollution and road traffic was associated with an increased risk of arteriosclerosis, as shown by premature aortic and coronary calcification. Short-term increases in air pollution were associated with an increased risk of myocardial infarction, stroke and acute heart failure. The risk was increased even when pollutant concentrations were below European standards. Reinforcing the evidence from epidemiological studies, numerous experimental studies demonstrated that air pollution promotes a systemic vascular oxidative stress reaction. Radical oxygen species induce endothelial dysfunction, monocyte activation and some proatherogenic changes in lipoproteins, which initiate plaque formation. Furthermore, air pollution favours thrombus formation, because of an increase in coagulation factors and platelet activation. Experimental studies also indicate that some pollutants have more harmful cardiovascular effects, such as combustion-derived PM2.5 and ultrafine particles. Air pollution is a major contributor to cardiovascular diseases. Promotion of safer air quality appears to be a new challenge in cardiovascular disease prevention.
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Affiliation(s)
- Thomas Bourdrel
- Radiology Department, Imaging Medical Centre Étoile-Neudorf, 67100 Strasbourg, France.
| | - Marie-Abèle Bind
- Department of Statistics, Harvard University Faculty of Arts and Sciences, MA 02138-2901 Cambridge, USA
| | - Yannick Béjot
- Department of Neurology, Dijon Stroke Registry, University Hospital and Medical School of Dijon, University of Burgundy, 21079 Dijon cedex, France
| | - Olivier Morel
- Cardiology Department, Nouvel Hôpital Civil, University of Strasbourg, 67000 Strasbourg, France
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130
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Niranjan R, Thakur AK. The Toxicological Mechanisms of Environmental Soot (Black Carbon) and Carbon Black: Focus on Oxidative Stress and Inflammatory Pathways. Front Immunol 2017; 8:763. [PMID: 28713383 PMCID: PMC5492873 DOI: 10.3389/fimmu.2017.00763] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/16/2017] [Indexed: 12/29/2022] Open
Abstract
The environmental soot and carbon blacks (CBs) cause many diseases in humans, but their underlying mechanisms of toxicity are still poorly understood. Both are formed after the incomplete combustion of hydrocarbons but differ in their constituents and percent carbon contents. For the first time, “Sir Percival Pott” described soot as a carcinogen, which was subsequently confirmed by many others. The existing data suggest three main types of diseases due to soot and CB exposures: cancer, respiratory diseases, and cardiovascular dysfunctions. Experimental models revealed the involvement of oxidative stress, DNA methylation, formation of DNA adducts, and Aryl hydrocarbon receptor activation as the key mechanisms of soot- and CB-induced cancers. Metals including Si, Fe, Mn, Ti, and Co in soot also contribute in the reactive oxygen species (ROS)-mediated DNA damage. Mechanistically, ROS-induced DNA damage is further enhanced by eosinophils and neutrophils via halide (Cl− and Br−) dependent DNA adducts formation. The activation of pulmonary dendritic cells, T helper type 2 cells, and mast cells is crucial mediators in the pathology of soot- or CB-induced respiratory disease. Polyunsaturated fatty acids (PUFAs) were also found to modulate T cells functions in respiratory diseases. Particularly, telomerase reverse transcriptase was found to play the critical role in soot- and CB-induced cardiovascular dysfunctions. In this review, we propose integrated mechanisms of soot- and CB-induced toxicity emphasizing the role of inflammatory mediators and oxidative stress. We also suggest use of antioxidants and PUFAs as protective strategies against soot- and CB-induced disorders.
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Affiliation(s)
- Rituraj Niranjan
- Department of Biological Sciences and Bioengineering (BSBE), Indian Institute of Technology Kanpur, Kanpur, India
| | - Ashwani Kumar Thakur
- Department of Biological Sciences and Bioengineering (BSBE), Indian Institute of Technology Kanpur, Kanpur, India
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131
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Yang WY, Zhang ZY, Thijs L, Bijnens EM, Janssen BG, Vanpoucke C, Lefebvre W, Cauwenberghs N, Wei FF, Luttun A, Verhamme P, Van Hecke E, Kuznetsova T, D'hooge J, Nawrot TS, Staessen JA. Left ventricular function in relation to chronic residential air pollution in a general population. Eur J Prev Cardiol 2017; 24:1416-1428. [PMID: 28617090 PMCID: PMC5574492 DOI: 10.1177/2047487317715109] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Background In view of the increasing heart failure epidemic and awareness of the adverse impact of environmental pollution on human health, we investigated the association of left ventricular structure and function with air pollutants in a general population. Methods In 671 randomly recruited Flemish (51.7% women; mean age, 50.4 years) we echocardiographically assessed left ventricular systolic strain and strain rate and the early and late peak velocities of transmitral blood flow and mitral annular movement (2005−2009). Using subject-level data, left ventricular function was cross-sectionally correlated with residential long-term exposure to air pollutants, including black carbon, PM2.5, PM10 (particulate matter) and nitrogen dioxide (NO2), while accounting for clustering by residential address and confounders. Results Annual exposures to black carbon, PM2.5, PM10 and NO2 averaged 1.19, 13.0, 17.7, and 16.8 µg/m3. Systolic left ventricular function was worse (p ≤ 0.027) with higher black carbon, PM2.5, PM10 and NO2 with association sizes per interquartile interval increment ranging from −0.339 to −0.458% for longitudinal strain and from −0.033 to −0.049 s−1 for longitudinal strain rate. Mitral E and a′ peak velocities were lower (p ≤ 0.021) with higher black carbon, PM2.5 and PM10 with association sizes ranging from −1.727 to −1.947 cm/s and from −0.175 to −0.235 cm/s, respectively. In the geographic analysis, the systolic longitudinal strain sided with gradients in air pollution. The path analysis identified systemic inflammation as a possible mediator of associations with black carbon. Conclusions Long-term low-level air pollution is associated with subclinical impairment of left ventricular performance and might be a risk factor for heart failure.
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Affiliation(s)
- Wen-Yi Yang
- 1 Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium
| | - Zhen-Yu Zhang
- 1 Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium
| | - Lutgarde Thijs
- 1 Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium
| | - Esmée M Bijnens
- 2 Centre for Environmental Sciences, Hasselt University, Belgium
| | - Bram G Janssen
- 2 Centre for Environmental Sciences, Hasselt University, Belgium
| | | | - Wouter Lefebvre
- 4 Flemish Institute for Technological Research, Mol, Belgium
| | - Nicholas Cauwenberghs
- 1 Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium
| | - Fang-Fei Wei
- 1 Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium
| | - Aernout Luttun
- 5 Centre for Molecular and Vascular Biology, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium
| | - Peter Verhamme
- 5 Centre for Molecular and Vascular Biology, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium
| | - Etienne Van Hecke
- 6 Division of Geography and Tourism, Faculty of Science, University of Leuven, Belgium
| | - Tatiana Kuznetsova
- 1 Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium
| | - Jan D'hooge
- 7 Laboratory on Cardiovascular Imaging and Dynamics, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium
| | - Tim S Nawrot
- 2 Centre for Environmental Sciences, Hasselt University, Belgium
| | - Jan A Staessen
- 1 Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Belgium.,8 R&D Group VitaK, Maastricht University, The Netherlands
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132
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Li H, Zhou L, Wang C, Chen R, Ma X, Xu B, Xiong L, Ding Z, Chen X, Zhou Y, Xu Y, Kan H. Associations Between Air Quality Changes and Biomarkers of Systemic Inflammation During the 2014 Nanjing Youth Olympics: A Quasi-Experimental Study. Am J Epidemiol 2017; 185:1290-1296. [PMID: 28459948 DOI: 10.1093/aje/kww209] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 04/27/2016] [Indexed: 12/12/2022] Open
Abstract
There is increasing interest in quasi-experimental research to evaluate whether actions taken to improve air quality will benefit public health. We conducted a quasi-experimental study to evaluate inflammatory response to changes in air quality during the 2014 Nanjing Youth Olympics in China. We repeatedly measured 8 biomarkers of systemic inflammation in 31 healthy adults and obtained hourly air pollutant concentrations from a nearby fixed-site monitoring station. We used linear mixed-effect models to examine the associations between air quality changes and blood biomarkers. Air pollutant concentrations decreased apparently during the Youth Olympics. Concomitantly, we observed significant decreases in levels of soluble cluster of differentiation 40 (CD40) ligand and interleukin 1β (geometric means ratios were 0.45 and 0.24, respectively) from the pre-Olympic period to the intra-Olympic period. Afterwards, levels of C-reactive protein and vascular cell adhesion molecule 1 increased significantly (geometric means ratios were 2.22 and 1.29, respectively) in the post-Olympic period. Fine particulate matter and ozone were significantly associated with soluble CD40 ligand, P-selectin, interleukin 1β, intercellular adhesion molecule 1, and vascular cell adhesion molecule 1. Other pollutants showed positive but nonsignificant associations. Our study indicated that reduced air pollution, especially fine particulate matter and ozone, during the 2014 Nanjing Youth Olympics was associated with alleviated systemic inflammation in healthy adults.
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Affiliation(s)
- Huichu Li
- School of Public Health, Key Laboratory of Public Health Safety of the Ministry of Education and Key Laboratory of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai, China
| | - Lian Zhou
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
- School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, China
| | - Cuicui Wang
- School of Public Health, Key Laboratory of Public Health Safety of the Ministry of Education and Key Laboratory of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai, China
| | - Renjie Chen
- School of Public Health, Key Laboratory of Public Health Safety of the Ministry of Education and Key Laboratory of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Fudan University, Shanghai, China
| | - Xiaoying Ma
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Bin Xu
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Lilin Xiong
- Nanjing Municipal Center for Disease Control and Prevention, Nanjing, China
| | - Zhen Ding
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Xiaodong Chen
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Yun Zhou
- Jiangning District Center for Disease Control and Prevention, Nanjing, China
| | - Yan Xu
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Haidong Kan
- School of Public Health, Key Laboratory of Public Health Safety of the Ministry of Education and Key Laboratory of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Fudan University, Shanghai, China
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Lucero J, Suwannasual U, Herbert LM, McDonald JD, Lund AK. The role of the lectin-like oxLDL receptor (LOX-1) in traffic-generated air pollution exposure-mediated alteration of the brain microvasculature in Apolipoprotein (Apo) E knockout mice. Inhal Toxicol 2017; 29:266-281. [PMID: 28816559 PMCID: PMC6732220 DOI: 10.1080/08958378.2017.1357774] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 07/17/2017] [Indexed: 12/30/2022]
Abstract
Recent studies have shown a strong correlation between air pollution-exposure and detrimental outcomes in the central nervous system, including alterations in blood brain barrier (BBB) integrity, neuroinflammation, and neurodegeneration. However, the mechanisms mediating these pathologies have not yet been fully elucidated. We have previously reported that exposure to traffic-generated air pollution results in increased circulating oxidized low-density lipoprotein (oxLDL), associated with alterations in BBB integrity, in atherosclerotic Apolipoprotein E null (ApoE-/-) mice. Thus, we investigated the role of the lectin-like oxLDL receptor (LOX)-1 in mediating these deleterious effects in ApoE-/- mice exposed to a mixture of gasoline and diesel engine exhaust (MVE: 100 PM µg/m3) for 6 h/d, 7d/week, for 30 d by inhalation. Concurrent with exposures, a subset of mice were treated with neutralizing antibodies to LOX-1 (LOX-1 Ab) i.p., or IgG (control) i.p., every other day during exposures. Resulting brain microvascular integrity, tight junction (TJ) protein expression, matrix metalloproteinase (MMP)-9/-2 activity, ROS, and markers of cellular adhesion and monocyte/macrophage sequestration were assessed. MVE-exposure resulted in decreased BBB integrity and alterations in microvascular TJ protein expression, associated with increased LOX-1 expression, MMP-9/-2 activities, and lipid peroxidation, each of which was attenuated with LOX-1 Ab treatment. Furthermore, MVE-exposure induced cerebral microvascular ROS and adhesion molecules, expression of which was not normalized through LOX-1 Ab-treatment. Such findings suggest that alterations in brain microvascular structure and integrity observed with MVE-exposure may be mediated, at least in part, via LOX-1 signaling.
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Affiliation(s)
- JoAnn Lucero
- Advanced Environmental Research Institute, Department of Biological Sciences, University of North Texas, Denton, TX, USA
| | - Usa Suwannasual
- Advanced Environmental Research Institute, Department of Biological Sciences, University of North Texas, Denton, TX, USA
| | - Lindsay M. Herbert
- Cell Biology and Physiology, University of New Mexico, Albuquerque, NM, USA
| | - Jacob D. McDonald
- Lovelace Biomedical and Environmental Research Institute, Albuquerque, NM, USA
| | - Amie K. Lund
- Advanced Environmental Research Institute, Department of Biological Sciences, University of North Texas, Denton, TX, USA
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134
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Croft DP, Cameron SJ, Morrell CN, Lowenstein CJ, Ling F, Zareba W, Hopke PK, Utell MJ, Thurston SW, Thevenet-Morrison K, Evans KA, Chalupa D, Rich DQ. Associations between ambient wood smoke and other particulate pollutants and biomarkers of systemic inflammation, coagulation and thrombosis in cardiac patients. ENVIRONMENTAL RESEARCH 2017; 154:352-361. [PMID: 28167447 PMCID: PMC5375102 DOI: 10.1016/j.envres.2017.01.027] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 12/25/2016] [Accepted: 01/24/2017] [Indexed: 05/20/2023]
Abstract
BACKGROUND Increased particulate air pollution has been associated with both an increased risk of myocardial infarction (MI) and adverse changes in cardiac biomarkers. Up to 30% of ambient wintertime fine particles (PM2.5) in Rochester, NY are from wood burning. Our study examined associations between ambient levels of a marker of wood smoke (Delta-C) and other particulate air pollutants and biomarkers of inflammation, coagulation and thrombosis. METHODS We measured blood concentrations of C-reactive protein (CRP), D-dimer, fibrinogen, P-selectin, platelet factor 4 (PF-4), von Willebrand factor (vWF), and myeloperoxidase (MPO) of 135 patients undergoing cardiac catheterization during the winters of 2011-2013. We coupled these data with hourly ambient concentrations of Delta-C, black carbon (BC; marker of traffic pollution), and ultrafine (10-100nm; UFP), accumulation mode (100-500nm; AMP), and fine particles (<2.5µm; PM2.5). Using linear regression models, we estimated the change in each biomarker associated with increased pollutant concentrations at intervals between 1 and 96h preceding blood collection. RESULTS Each 0.13µg/m3 increase in Delta-C concentration in the prior 12h was associated with a 0.91% increase in fibrinogen levels (95% CI=0.23%, 1.59%), but unexpectedly in the prior 48h, each 0.17µg/m3 increase in Delta-C concentration was associated with a 2.75% decrease in MPO levels (95% CI=-5.13%,-0.37%). We did not see associations between Delta-C concentrations and any other biomarkers. Interquartile range (IQR) increases in PM2.5, BC, UFP, and AMP concentrations were generally associated with increased CRP and fibrinogen, but not PF4, D-dimer, vWF, or P-selectin. CONCLUSIONS In a population of cardiac patients, we noted adverse changes in fibrinogen associated with increased concentrations of a marker of wood smoke. Increases in PM2.5, BC, AMP, and UFP concentrations in the previous 96h were also associated with adverse changes in markers of systemic inflammation and coagulation, but not with markers of endothelial cell dysfunction or platelet activation.
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Affiliation(s)
- Daniel P Croft
- Division of Pulmonary and Critical Care, Department of Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - Scott J Cameron
- Division of Cardiology, Department of Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - Craig N Morrell
- Division of Cardiology, Department of Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - Charles J Lowenstein
- Division of Cardiology, Department of Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - Frederick Ling
- Division of Cardiology, Department of Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - Wojciech Zareba
- Division of Cardiology, Department of Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - Philip K Hopke
- Institute for a Sustainable Environment, and Center for Air Resources Engineering and Science, Clarkson University, Box 5708, Potsdam, NY 13699-5708, USA; Department of Public Health Sciences, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - Mark J Utell
- Division of Pulmonary and Critical Care, Department of Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA; Department of Environmental Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - Sally W Thurston
- Department of Biostatistics and Computational Biology, University of Rochester, University of Rochester Medical Center, Saunders Research Building, 265 Crittenden Blvd., Box 630, Rochester, NY 14642, USA.
| | - Kelly Thevenet-Morrison
- Department of Public Health Sciences, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - Kristin A Evans
- Department of Public Health Sciences, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - David Chalupa
- Department of Public Health Sciences, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
| | - David Q Rich
- Department of Public Health Sciences, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA; Department of Environmental Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, USA.
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Ferrante M, Fiore M, Conti GO, Fiore V, Grasso A, Copat C, Signorelli SS. Transition and heavy metals compared to oxidative parameter balance in patients with deep vein thrombosis: A case-control study. Mol Med Rep 2017; 15:3438-3444. [DOI: 10.3892/mmr.2017.6394] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 02/03/2017] [Indexed: 11/05/2022] Open
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Dose- and time- effect responses of DNA methylation and histone H3K9 acetylation changes induced by traffic-related air pollution. Sci Rep 2017; 7:43737. [PMID: 28256616 PMCID: PMC5335614 DOI: 10.1038/srep43737] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 01/30/2017] [Indexed: 11/08/2022] Open
Abstract
As an important risk factor of respiratory disorders, traffic-related air pollution (TRAP) has caused extensive concerns. Epigenetic change has been considered a link between TRAP and respiratory diseases. However, the exact effects of TRAP on epigenetic changes are still unclear. Here we investigated the dose- and time- effect responses of TRAP on DNA methylations and H3K9 acetylation (H3K9ac) in both blood and lung tissues of rats. The findings showed that every 1 μg/m3 increase of TRAP components were associated with changes in %5 mC (95% CI) in LINE-1, iNOS, p16CDKN2A, and APC ranging from −0.088% (−0.150, −0.026) to 0.102 (0.049, 0.154), as well as 0.276 (0.053, 0.498) to 0.475 (0.103, 0.848) ng/mg increase of H3K9ac. In addition, every 1 more day exposure at high level of TRAP (in tunnel) also significantly changed the levels of DNA methylation (ranging from −0.842% to 0.248%) and H3K9ac (16.033 and 15.718 ng/mg pro in PBMC and lung tissue, respectively) changes. Season and/or sex could interact with air pollutants in affecting DNA methylation and H3K9ac. The findings showed that TRAP exposure is dose- and time- dependently associated with the changes of DNA methylation and H3K9ac.
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Evans KA, Hopke PK, Utell MJ, Kane C, Thurston SW, Ling FS, Chalupa D, Rich DQ. Triggering of ST-elevation myocardial infarction by ambient wood smoke and other particulate and gaseous pollutants. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2017; 27:198-206. [PMID: 27072425 PMCID: PMC5063679 DOI: 10.1038/jes.2016.15] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 01/19/2016] [Indexed: 05/25/2023]
Abstract
We previously observed increased odds of ST-elevation myocardial infarctions (STEMIs) associated with increased ambient fine particulate matter (PM2.5) in the previous hour. However, data are lacking on the effects of specific PM sources. Using data from 362 patients, a case-crossover design, and conditional logistic regression, we estimated the relative odds of STEMI associated with increased Delta-C (wood smoke), black carbon (BC; traffic), PM2.5, and gaseous pollutants in the previous 1-72 h. We did not observe increased odds of STEMIs associated with increased Delta-C or BC. We did observe increased odds associated with each 7.1 μg/m3 increase in PM2.5 (OR (95% CI): 1.17 (0.99, 1.39)) and each 19.9 p.p.b. increase in ozone (O3; 1.27 (1.00, 1.63)) in the previous hour, and each 0.22 p.p.m. increase in 48-h carbon monoxide (CO) concentrations (1.32 (1.00, 1.73]). Larger relative odds were associated with PM2.5 in May-October, and O3 and CO in November-April. Increased PM2.5, O3, and CO, but not wood smoke or BC, were associated with increased odds of STEMI, and effects may differ by season. Studies using spatially adjusted pollution estimates are needed, as well as studies further examining O3 and CO effects on the risk of STEMI.
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Affiliation(s)
- Kristin A. Evans
- Department of Public Health Sciences, University of Rochester Medical Center, Rochester, New York
| | - Philip K. Hopke
- Institute for a Sustainable Environment, and Center for Air Resources Engineering and Science, Clarkson University, Potsdam, New York
| | - Mark J. Utell
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Rochester Medical Center, Rochester, New York
| | - Cathleen Kane
- Department of Public Health Sciences, University of Rochester Medical Center, Rochester, New York
| | - Sally W. Thurston
- Department of Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, New York
| | - Frederick S. Ling
- Division of Cardiology, Department of Medicine, University of Rochester Medical Center, Rochester, New York
| | - David Chalupa
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Rochester Medical Center, Rochester, New York
| | - David Q. Rich
- Department of Public Health Sciences, University of Rochester Medical Center, Rochester, New York
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Tallon LA, Manjourides J, Pun VC, Mittleman MA, Kioumourtzoglou MA, Coull B, Suh H. Erectile dysfunction and exposure to ambient Air pollution in a nationally representative cohort of older Men. Environ Health 2017; 16:12. [PMID: 28212639 PMCID: PMC5316194 DOI: 10.1186/s12940-017-0216-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 02/08/2017] [Indexed: 05/29/2023]
Abstract
BACKGROUND Little is known about the association between air pollution and erectile dysfunction (ED), a disorder occurring in 64% of men over the age of 70, and to date, no studies have been published. To address this significant knowledge gap, we explored the relationship between ED and air pollution in a group of older men who were part of the National Social Life, Health, and Aging Project (NSHAP), a nationally representative cohort study of older Americans. METHODS We obtained incident ED status and participant data for 412 men (age 57-85). Fine particulate matter (PM2.5) exposures were estimated using spatio-temporal models based on participants' geocoded addresses, while nitrogen dioxide (NO2) and ozone (O3) concentrations were estimated using nearest measurements from the Environmental Protection Agency's Air Quality System. The association between air pollution and incident ED (newly developed in Wave 2) was examined and logistic regression models were run with adjusted models controlling for race, education, season, smoking, obesity, diabetes, depression, and median household income of census tract. RESULTS We found positive, although statistically insignificant, associations between PM2.5, NO2, and O3 exposures and odds of incident ED for each of our examined exposure windows, including 1 to 7 year moving averages. Odds ratios (OR) for 1 and 7 year moving averages equaled 1.16 (95% CI: 0.87, 1.55) and 1.16 (95% CI: 0.92, 1.46), respectively, for an IQR increase in PM2.5 exposures. Observed associations were robust to model specifications and were not significantly modified by any of the examined risk factors for ED. CONCLUSIONS We found associations between PM2.5, NO2, and O3 exposures and odds of developing ED that did not reach nominal statistical significance, although exposures to each pollutant were consistently associated with higher odds of developing ED. While more research is needed, our findings suggest a relationship between air pollutant exposure and incident cases of ED, a common condition in older men.
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Affiliation(s)
- Lindsay A. Tallon
- Department of Health Sciences, Northeastern University, 360 Huntington Avenue, Boston, MA 02115 USA
- MCPHS University, 179 Longwood Avenue, Boston, MA 02115 USA
| | - Justin Manjourides
- Department of Health Sciences, Northeastern University, 360 Huntington Avenue, Boston, MA 02115 USA
| | - Vivian C. Pun
- Department of Health Sciences, Northeastern University, 360 Huntington Avenue, Boston, MA 02115 USA
| | - Murray A. Mittleman
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, 677 Huntington Ave., Boston, MA 02115 USA
| | - Marianthi-Anna Kioumourtzoglou
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W. 168th Street, #1105C, New York, NY 10032 USA
| | - Brent Coull
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, 677 Huntington Ave., Boston, MA 02115 USA
| | - Helen Suh
- Department of Civil and Environmental Engineering, Tufts University, 200 College Avenue, 301 Anderson Hall, Medford, MA 02155 USA
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Yang L, Hou XY, Wei Y, Thai P, Chai F. Biomarkers of the health outcomes associated with ambient particulate matter exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 579:1446-1459. [PMID: 27908628 DOI: 10.1016/j.scitotenv.2016.11.146] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 11/18/2016] [Accepted: 11/21/2016] [Indexed: 05/22/2023]
Abstract
Epidemiologic evidence supports the positive association of cardiopulmonary morbidity and mortality, and lung cancer risk with exposure to airborne particulate matter (PM). Oxidative stress and inflammation have been proposed to be the major causal factors involved in mediating PM effects on both cardiovascular and pulmonary health outcomes. However, the mechanism whereby PM causes the health effects is not fully elucidated. To evaluate and investigate human exposure to PM, it is essential to have a specific, sensitive and robust characterization of individual exposure to PM. Biomarkers may mark important intermediate steps leading to overt health effects after PM exposure. Thus biomarkers are promising indicators, which could serve as representative measures of the exposure to PM for assessing the health impacts and understanding the mechanism. Indeed, a number of biomarkers are already in use in the field of epidemiological studies and toxicological research. However, we are facing now the challenges to select robust, specific and sensitive biomarkers, which can be employed in large-scale of population to assess the health risk and to monitor the effectiveness of interventions. In this review, we describe a range of biomarkers that are associated with air pollution exposure, particularly markers of oxidative stress, inflammatory factors, and microRNAs, as well as markers of pollutants metabolites. Understanding the nature of the association of these biomarkers with PM exposure may shed some light on the process of selecting biomarkers for large-scale population studies, developing novel preventative and therapeutic strategies.
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Affiliation(s)
- Lixin Yang
- Department of Environmental Pollution and Health, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012 Beijing, China.
| | - Xiang-Yu Hou
- School of Public Health and Social Work, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Yongjie Wei
- Department of Environmental Pollution and Health, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012 Beijing, China
| | - Phong Thai
- International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Fahe Chai
- Chinese Research Academy of Environmental Sciences, 100012 Beijing, China.
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140
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Hu H, Ha S, Xu X. Ozone and hypertensive disorders of pregnancy in Florida: Identifying critical windows of exposure. ENVIRONMENTAL RESEARCH 2017; 153:120-125. [PMID: 27940104 PMCID: PMC5222744 DOI: 10.1016/j.envres.2016.12.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 11/30/2016] [Accepted: 12/01/2016] [Indexed: 05/05/2023]
Abstract
INTRODUCTION Ozone (O3) has been linked to hypertensive disorders of pregnancy (HDP). However, inconsistent results have been reported, and no study has examined the critical exposure windows during pregnancy. MATERIALS AND METHODS We used Florida birth vital statistics records to investigate the association between HDP and O3 exposure among 655,529 pregnancies with conception dates between 2005 and 2007. Individual O3 exposure was assessed at mothers' home address at the time of delivery using the Hierarchical Bayesian space-time statistical model. We examined the association during three predefined exposure windows including trimester 1, trimester 2, and trimesters 1&2, as well as in each week of the first two trimesters using distributed lag models. RESULTS Pregnancies with HDP had a higher mean exposure to O3 (39.07 in trimester 1, 39.02 in trimester 2, and 39.06 in trimesters 1&2, unit: ppb) than those without HDP (38.65 in trimester 1, 38.57 in trimester 2, and 38.61 in trimesters 1&2, unit: ppb). In the adjusted logistic regression model, increased odds of HDP were observed for each 5 ppb increase in O3 (ORTrimester1=1.04, 95% CI: 1.03, 1.06; ORTrimester2=1.03, 95% CI: 1.02, 1.04; ORTrimester1&2=1.07, 95% CI: 1.05, 1.08). In the distributed lag models, elevated odds of HDP were observed with increased O3 exposure during the 1st to 24th weeks of gestation, with higher odds during early pregnancy. CONCLUSIONS O3 exposure during pregnancy is related to increased odds of HDP, and early pregnancy appears to be a potentially critical window of exposure.
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Affiliation(s)
- Hui Hu
- Department of Epidemiology, College of Public Health and Health Professions and College of Medicine, University of Florida, Gainesville, FL, USA.
| | - Sandie Ha
- Epidemiology Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, 20892 USA
| | - Xiaohui Xu
- Department of Epidemiology & Biostatistics, School of Public Health, Texas A&M University, College Station, TX, USA.
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Barth A, Brucker N, Moro AM, Nascimento S, Goethel G, Souto C, Fracasso R, Sauer E, Altknecht L, da Costa B, Duarte M, Menezes CB, Tasca T, Arbo MD, Garcia SC. Association between inflammation processes, DNA damage, and exposure to environmental pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:353-362. [PMID: 27718115 DOI: 10.1007/s11356-016-7772-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 09/22/2016] [Indexed: 06/06/2023]
Abstract
Environmental exposure to pollutants, especially polycyclic aromatic hydrocarbons (PAHs), could lead to carcinogenesis development. However, there is a gap on the mechanisms involved in this effect. Therefore, the aim of this study was to investigate the potential relationship between exposure to environmental air pollution and inflammation process in DNA damage in taxi drivers. This study included 45 taxi drivers and 40 controls; non-smokers composed both groups. Biological monitoring was performed through quantification of urinary 1-hydroxypyrene (1-OHP). ICAM-1 (CD54) expression, NTPDase activity, inflammatory cytokine (IL-1β, IL-6, IL-10, TNF-α and IFN-γ) levels, and comet and micronucleus assays were evaluated. The results demonstrated that 1-OHP levels, ICAM-1 expression, NTPDase activity, and DNA damage biomarkers (% tail DNA and micronucleus frequency) were increased in taxi drivers compared to the control group (p < 0.01). Moreover, significant associations were found between 1-OHP levels and ICAM-1 expression, % tail DNA, and micronucleus frequency (p < 0.05). Besides, pro-inflammatory cytokine levels were positively correlated to % tail DNA and micronucleus frequency (p < 0.001). Our findings suggest an important association between environmental exposure to air pollution with increase of ICAM-1 expression and NTPDase activity in taxi drivers. Additionally, the multiple regression linear-analysis demonstrated association between IL-6 and DNA damage. Thus, the present study has provided important evidence that, in addition to environmental exposure to air pollutants, the inflammation process may contribute to DNA damage.
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Affiliation(s)
- Anelise Barth
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
| | - Natália Brucker
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
| | - Angela M Moro
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
| | - Sabrina Nascimento
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
- Post-graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Gabriela Goethel
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
- Post-graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Caroline Souto
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
| | - Rafael Fracasso
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
| | - Elisa Sauer
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
- Post-graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Louise Altknecht
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
| | - Bárbara da Costa
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
| | - Marta Duarte
- Department of Health Sciences, Lutheran University of Brazil, Santa Maria, RS, Brazil
| | - Camila B Menezes
- Post-graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Laboratory of Research in Parasitology, Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Tiana Tasca
- Post-graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Laboratory of Research in Parasitology, Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Marcelo D Arbo
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil
- Post-graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Solange Cristina Garcia
- Laboratory of Toxicology (LATOX), Department of Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP.: 90610-000, Brazil.
- Post-graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Institute of Cardiology, University Cardiology Foundation, Porto Alegre, RS, Brazil.
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Schwartz J, Bind MA, Koutrakis P. Estimating Causal Effects of Local Air Pollution on Daily Deaths: Effect of Low Levels. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:23-29. [PMID: 27203595 PMCID: PMC5226700 DOI: 10.1289/ehp232] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 09/07/2015] [Accepted: 05/04/2016] [Indexed: 05/18/2023]
Abstract
BACKGROUND Although many time-series studies have established associations of daily pollution variations with daily deaths, there are fewer at low concentrations, or focused on locally generated pollution, which is becoming more important as regulations reduce regional transport. Causal modeling approaches are also lacking. OBJECTIVE We used causal modeling to estimate the impact of local air pollution on mortality at low concentrations. METHODS Using an instrumental variable approach, we developed an instrument for variations in local pollution concentrations that is unlikely to be correlated with other causes of death, and examined its association with daily deaths in the Boston, Massachusetts, area. We combined height of the planetary boundary layer and wind speed, which affect concentrations of local emissions, to develop the instrument for particulate matter ≤ 2.5 μm (PM2.5), black carbon (BC), or nitrogen dioxide (NO2) variations that were independent of year, month, and temperature. We also used Granger causality to assess whether omitted variable confounding existed. RESULTS We estimated that an interquartile range increase in the instrument for local PM2.5 was associated with a 0.90% increase in daily deaths (95% CI: 0.25, 1.56). A similar result was found for BC, and a weaker association with NO2. The Granger test found no evidence of omitted variable confounding for the instrument. A separate test confirmed the instrument was not associated with mortality independent of pollution. Furthermore, the association remained when all days with PM2.5 concentrations > 30 μg/m3 were excluded from the analysis (0.84% increase in daily deaths; 95% CI: 0.19, 1.50). CONCLUSIONS We conclude that there is a causal association of local air pollution with daily deaths at concentrations below U.S. EPA standards. The estimated attributable risk in Boston exceeded 1,800 deaths during the study period, indicating that important public health benefits can follow from further control efforts. Citation: Schwartz J, Bind MA, Koutrakis P. 2017. Estimating causal effects of local air pollution on daily deaths: effect of low levels. Environ Health Perspect 125:23-29; http://dx.doi.org/10.1289/EHP232.
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Affiliation(s)
- Joel Schwartz
- Address correspondence to J. Schwartz, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Landmark Center 404-M, 401 Park Dr., Boston, MA 02215 USA. Telephone: (617) 384-8752. E-mail:
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Cantone L, Iodice S, Tarantini L, Albetti B, Restelli I, Vigna L, Bonzini M, Pesatori AC, Bollati V. Particulate matter exposure is associated with inflammatory gene methylation in obese subjects. ENVIRONMENTAL RESEARCH 2017; 152:478-484. [PMID: 27838013 PMCID: PMC5250798 DOI: 10.1016/j.envres.2016.11.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/14/2016] [Accepted: 11/02/2016] [Indexed: 05/22/2023]
Abstract
BACKGROUND Overweight and obesity are becoming more widespread with alarming projections for the coming years. Obesity may increase susceptibility to the adverse effects of PM exposure, exacerbating the effects on cardiovascular diseases and altering the biomarkers of vascular inflammation. The associated biological mechanisms have not been fully understood yet; the common denominator in the pathogenesis of the co-morbidities of obesity is the presence of an active, low-grade inflammatory process. DNA methylation has been shown to regulate inflammatory pathways that are responsible for the development of cardiovascular diseases. OBJECTIVES The aim of the study was to investigate, in a population of overweight/obese subjects, the effects of PM on blood DNA methylation in genes associated to inflammatory response. METHODS Using bisulfite pyrosequencing, we measured DNA methylation in peripheral blood mononuclear cells from 186 overweighted/obese subjects. In particular, we quantified DNA methylation in a set of 3 candidate genes, including CD14, TLR4 and TNF-α, because of the important roles that these genes play in the inflammatory pathway. Personal exposure to PM10 was estimated for each subject based on the local PM10 concentrations, measured by monitoring stations at residential address. Repeated measure models were used to evaluate the association of PM10 with each genes, accounting for possible correlations among the genes that regulate the same inflammatory pathway. RESULTS We found an inverse association between the daily PM10 exposure and the DNA methylation of inflammatory genes, measured in peripheral blood of healthy overweight/obese subjects. Considering different exposure time-windows, the effect on CD14 and TLR4 methylation was observed, respectively, in days 4-5-6, and days 6-7-8. TNF-α methylation was not associated to PM10. CONCLUSIONS Our findings support a picture in which PM10 exposure and transcriptional regulation of inflammatory gene pathway in obese subjects are associated.
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Affiliation(s)
- Laura Cantone
- EPIGET - Epidemiology, Epigenetics and Toxicology Lab., Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy.
| | - Simona Iodice
- EPIGET - Epidemiology, Epigenetics and Toxicology Lab., Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Letizia Tarantini
- EPIGET - Epidemiology, Epigenetics and Toxicology Lab., Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Benedetta Albetti
- EPIGET - Epidemiology, Epigenetics and Toxicology Lab., Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Ilaria Restelli
- Department of Preventive Medicine, UOC Protezione e Promozione Salute Lavoratori Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Luisella Vigna
- Department of Preventive Medicine, UOC Protezione e Promozione Salute Lavoratori Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Matteo Bonzini
- EPIGET - Epidemiology, Epigenetics and Toxicology Lab., Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy; Department of Preventive Medicine, UOC Protezione e Promozione Salute Lavoratori Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Angela Cecilia Pesatori
- EPIGET - Epidemiology, Epigenetics and Toxicology Lab., Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy; Epidemiology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Valentina Bollati
- EPIGET - Epidemiology, Epigenetics and Toxicology Lab., Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy; Epidemiology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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Sunil VR, Vayas KN, Fang M, Zarbl H, Massa C, Gow AJ, Cervelli JA, Kipen H, Laumbach RJ, Lioy PJ, Laskin JD, Laskin DL. World Trade Center (WTC) dust exposure in mice is associated with inflammation, oxidative stress and epigenetic changes in the lung. Exp Mol Pathol 2016; 102:50-58. [PMID: 27986442 DOI: 10.1016/j.yexmp.2016.12.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 12/08/2016] [Accepted: 12/09/2016] [Indexed: 12/20/2022]
Abstract
Exposure to World Trade Center (WTC) dust has been linked to respiratory disease in humans. In the present studies we developed a rodent model of WTC dust exposure to analyze lung oxidative stress and inflammation, with the goal of elucidating potential epigenetic mechanisms underlying these responses. Exposure of mice to WTC dust (20μg, i.t.) was associated with upregulation of heme oxygenase-1 and cyclooxygenase-2 within 3days, a response which persisted for at least 21days. Whereas matrix metalloproteinase was upregulated 7days post-WTC dust exposure, IL-6RA1 was increased at 21days; conversely, expression of mannose receptor, a scavenger receptor important in particle clearance, decreased. After WTC dust exposure, increases in methylation of histone H3 lysine K4 at 3days, lysine K27 at 7days and lysine K36, were observed in the lung, along with hypermethylation of Line-1 element at 21days. Alterations in pulmonary mechanics were also observed following WTC dust exposure. Thus, 3days post-exposure, lung resistance and tissue damping were decreased. In contrast at 21days, lung resistance, central airway resistance, tissue damping and tissue elastance were increased. These data demonstrate that WTC dust-induced inflammation and oxidative stress are associated with epigenetic modifications in the lung and altered pulmonary mechanics. These changes may contribute to the development of WTC dust pathologies.
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Affiliation(s)
- Vasanthi R Sunil
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States.
| | - Kinal N Vayas
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
| | - Mingzhu Fang
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Helmut Zarbl
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Christopher Massa
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
| | - Andrew J Gow
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
| | - Jessica A Cervelli
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
| | - Howard Kipen
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Robert J Laumbach
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Paul J Lioy
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Jeffrey D Laskin
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Debra L Laskin
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
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145
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Effects of PM 2.5 and NO 2 on the 8-isoprostane and lung function indices of FVC and FEV 1 in students of Ahvaz city, Iran. Saudi J Biol Sci 2016; 26:473-480. [PMID: 30899161 PMCID: PMC6408680 DOI: 10.1016/j.sjbs.2016.11.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/31/2016] [Accepted: 11/06/2016] [Indexed: 12/31/2022] Open
Abstract
The aim of this study was to determine the correlation between PM2.5 and NO2 pollutants and oxidative stress marker (8-isoprostane) and lung function tests (FVC and FEV1) in healthy children who were living and studying in three different areas of Ahvaz city including A1: Naderi site with high traffic, A2: Alavi Alley site with average traffic, and A3: Ein 2 site with low traffic (a rural area on the suburb of Ahvaz). 30 students in the 12-13 year-old range were selected from each studied zone (1, 2 and 3 sites) during three months of year. Of each student, one sample was taken every two weeks to measure 8-isoprostane of exhaled breath condensate (EBC). Air pollution data were collected from three air quality monitoring stations. Also, the relationship between air pollution and 8-isoprostane as well as lung function tests were determined using generalized estimating equations (GEE). The mean concentration of PM2.5 and NO2 in A1, A2 and A3 areas were 116, 92 and 45 (μg/m3) also 77, 53 and 14 (ppb) respectively. Among all studied students, there was a significant correlation between the increase of mean concentration of PM2.5 and NO2 in 1-4 before sampling day, increased 8-isoprostane concentration and decreased FEV1, while there was no significant correlation between them and decreased FVC. In A1 site, an increase in IQR (13 μg/m3) PM2.5 and IQR (6.5 ppb) NO2 on 1-4 days before sampling was associated with 0.38 unit (95% CI: 0.11, 0.65) and 1.1 unit (95% CI: 0.85, 1.35) increase in 8-isoprostane concentration, also decreased 121 ml and 190 ml FEV1, respectively. Results showed that the short-term exposure to traffic-related air pollution can decrease the values of lung function indices and increase the oxidative stress. It may adversely affect children's lungs.
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146
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Peng C, Bind MAC, Colicino E, Kloog I, Byun HM, Cantone L, Trevisi L, Zhong J, Brennan K, Dereix AE, Vokonas PS, Coull BA, Schwartz JD, Baccarelli AA. Particulate Air Pollution and Fasting Blood Glucose in Nondiabetic Individuals: Associations and Epigenetic Mediation in the Normative Aging Study, 2000-2011. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:1715-1721. [PMID: 27219535 PMCID: PMC5089881 DOI: 10.1289/ehp183] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 02/09/2016] [Accepted: 05/09/2016] [Indexed: 05/05/2023]
Abstract
BACKGROUND Among nondiabetic individuals, higher fasting blood glucose (FBG) independently predicts diabetes risk, cardiovascular disease, and dementia. Ambient PM2.5 (particulate matter with aerodynamic diameter ≤ 2.5 μm) is an emerging determinant of glucose dysregulation. PM2.5 effects and mechanisms are understudied among nondiabetic individuals. OBJECTIVES Our goals were to investigate whether PM2.5 is associated with an increase in FBG and to explore potential mediating roles of epigenetic gene regulation. METHODS In 551 nondiabetic participants in the Normative Aging Study, we measured FBG, and DNA methylation of four inflammatory genes (IFN-γ, IL-6, ICAM-1, and TLR-2), up to four times between 2000 and 2011 (median = 2). We estimated short- and medium-term (1-, 7-, and 28-day preceding each clinical visit) ambient PM2.5 at each participant's address using a validated hybrid land-use regression satellite-based model. We fitted covariate-adjusted regression models accounting for repeated measures. RESULTS Mean FBG was 99.8 mg/dL (SD = 10.7), 18% of the participants had impaired fasting glucose (IFG; i.e., 100-125 mg/dL FBG) at first visit. Interquartile increases in 1-, 7-, and 28-day PM2.5 were associated with 0.57 mg/dL (95% CI: 0.02, 1.11, p = 0.04), 1.02 mg/dL (95% CI: 0.41, 1.63, p = 0.001), and 0.89 mg/dL (95% CI: 0.32, 1.47, p = 0.003) higher FBG, respectively. The same PM2.5 metrics were associated with 13% (95% CI: -3%, 33%, p = 0.12), 27% (95% CI: 6%, 52%, p = 0.01) and 32% (95% CI: 10%, 58%, p = 0.003) higher odds of IFG, respectively. PM2.5 was negatively correlated with ICAM-1 methylation (p = 0.01), but not with other genes. Mediation analysis estimated that ICAM-1 methylation mediated 9% of the association of 28-day PM2.5 with FBG. CONCLUSIONS Among nondiabetics, short- and medium-term PM2.5 were associated with higher FBG. Mediation analysis indicated that part of this association was mediated by ICAM-1 promoter methylation. Citation: Peng C, Bind MA, Colicino E, Kloog I, Byun HM, Cantone L, Trevisi L, Zhong J, Brennan K, Dereix AE, Vokonas PS, Coull BA, Schwartz JD, Baccarelli AA. 2016. Particulate air pollution and fasting blood glucose in nondiabetic individuals: associations and epigenetic mediation in the Normative Aging Study, 2000-2011. Environ Health Perspect 124:1715-1721; http://dx.doi.org/10.1289/EHP183.
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Affiliation(s)
- Cheng Peng
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Address correspondence to C. Peng, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Building 1, G-7, 665 Huntington Ave., Boston, MA 02115 USA. E-mail:
| | | | - Elena Colicino
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Itai Kloog
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Hyang-Min Byun
- Human Nutrition Research Center, Institute of Cellular Medicine, Newcastle University, Newcastle, United Kingdom
| | - Laura Cantone
- Molecular Epidemiology and Environmental Epigenetics Laboratory, Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Letizia Trevisi
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Jia Zhong
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Kasey Brennan
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Alexandra E. Dereix
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Pantel S. Vokonas
- VA Normative Aging Study, Veterans Affairs Boston Healthcare System, Boston, Massachusetts, USA
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Brent A. Coull
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Joel D. Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Channing Laboratory, Harvard Medical School, Boston, Massachusetts, USA
| | - Andrea A. Baccarelli
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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147
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Sun G, Hazlewood G, Bernatsky S, Kaplan GG, Eksteen B, Barnabe C. Association between Air Pollution and the Development of Rheumatic Disease: A Systematic Review. Int J Rheumatol 2016; 2016:5356307. [PMID: 27847517 PMCID: PMC5099457 DOI: 10.1155/2016/5356307] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/15/2016] [Accepted: 10/04/2016] [Indexed: 11/17/2022] Open
Abstract
Objective. Environmental risk factors, such as air pollution, have been studied in relation to the risk of development of rheumatic diseases. We performed a systematic literature review to summarize the existing knowledge. Methods. MEDLINE (1946 to September 2016) and EMBASE (1980 to 2016, week 37) databases were searched using MeSH terms and keywords to identify cohort, case-control, and case cross-over studies reporting risk estimates for the development of select rheumatic diseases in relation to exposure of measured air pollutants (n = 8). We extracted information on the population sample and study period, method of case and exposure determination, and the estimate of association. Results. There was no consistent evidence of an increased risk for the development of rheumatoid arthritis (RA) with exposure to NO2, SO2, PM2.5, or PM10. Case-control studies in systemic autoimmune rheumatic diseases (SARDs) indicated higher odds of diagnosis with increasing PM2.5 exposure, as well as an increased relative risk for juvenile idiopathic arthritis (JIA) in American children <5.5 years of age. There was no association with SARDs and NO2 exposure. Conclusion. There is evidence for a possible association between air pollutant exposures and the development of SARDs and JIA, but relationships with other rheumatic diseases are less clear.
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Affiliation(s)
- Gavin Sun
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Glen Hazlewood
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | | | - Gilaad G. Kaplan
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Bertus Eksteen
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Cheryl Barnabe
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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148
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Caravedo MA, Herrera PM, Mongilardi N, de Ferrari A, Davila-Roman VG, Gilman RH, Wise RA, Miele CH, Miranda JJ, Checkley W. Chronic exposure to biomass fuel smoke and markers of endothelial inflammation. INDOOR AIR 2016; 26:768-75. [PMID: 26476302 PMCID: PMC4935667 DOI: 10.1111/ina.12259] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 10/08/2015] [Indexed: 05/03/2023]
Abstract
Indoor smoke exposure may affect cardiovascular disease (CVD) risk via lung-mediated inflammation, oxidative stress, and endothelial inflammation. We sought to explore the association between indoor smoke exposure from burning biomass fuels and a selected group of markers for endothelial inflammation. We compared serum concentrations of amyloid A protein, E-selectin, soluble intercellular adhesion molecule 1 (ICAM-1) and VCAM-1, von Willebrand factor (vWF), and high-sensitivity C-reactive protein (hs-CRP) in 228 biomass-exposed vs. 228 non-exposed participants living in Puno, Peru. Average age was 56 years (s.d. = 13), average BMI was 26.5 kg/m(2) (s.d. = 4.4), 48% were male, 59.4% completed high school, and 2% reported a physician diagnosis of CVD. In unadjusted analysis, serum levels of soluble ICAM-1 (330 vs. 302 ng/ml; P < 0.001), soluble VCAM-1 (403 vs. 362 ng/ml; P < 0.001), and E-selectin (54.2 vs. 52.7 ng/ml; P = 0.05) were increased in biomass-exposed vs. non-exposed participants, respectively, whereas serum levels of vWF (1148 vs. 1311 mU/ml; P < 0.001) and hs-CRP (2.56 vs. 3.12 mg/l; P < 0.001) were decreased, respectively. In adjusted analyses, chronic exposure to biomass fuels remained positively associated with serum levels of soluble ICAM-1 (P = 0.03) and VCAM-1 (P = 0.05) and E-selectin (P = 0.05), and remained negatively associated with serum levels of vWF (P = 0.02) and hs-CRP (P < 0.001). Daily exposure to biomass fuel smoke was associated with important differences in specific biomarkers of endothelial inflammation and may help explain accelerated atherosclerosis among those who are chronically exposed.
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Affiliation(s)
- M A Caravedo
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - P M Herrera
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - N Mongilardi
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - A de Ferrari
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - V G Davila-Roman
- Cardiovascular Division, Cardiovascular Imaging and Clinical Research Core Laboratory, Washington University School of Medicine, St. Louis, MO, USA
| | - R H Gilman
- Program in Global Disease Epidemiology and Control, Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - R A Wise
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - C H Miele
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - J J Miranda
- CRONICAS Center of Excellence for Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Peru
- Department of Medicine, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - W Checkley
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, MD, USA.
- Program in Global Disease Epidemiology and Control, Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA.
- CRONICAS Center of Excellence for Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Peru.
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Chen R, Meng X, Zhao A, Wang C, Yang C, Li H, Cai J, Zhao Z, Kan H. DNA hypomethylation and its mediation in the effects of fine particulate air pollution on cardiovascular biomarkers: A randomized crossover trial. ENVIRONMENT INTERNATIONAL 2016; 94:614-619. [PMID: 27397927 DOI: 10.1016/j.envint.2016.06.026] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/23/2016] [Accepted: 06/21/2016] [Indexed: 05/20/2023]
Abstract
BACKGROUND Short-term exposure to fine particulate matter (PM2.5) air pollution has been associated with altered DNA methylation in observational studies, but it remains unclear whether this change mediates the effects on cardiovascular biomarkers. OBJECTIVE To examine the impact of ambient PM2.5 on gene-specific DNA methylation and its potential mediation in the acute effects of PM2.5 on cardiovascular biomarkers. METHODS We designed a randomized, double-blind crossover trial using true or sham air purifiers for 48h among 35 healthy college students in Shanghai, China, in 2014. We measured blood global methylation estimated in long interspersed nucleotide element-1 (LINE‑1) and Alu repetitive elements, methylation in ten specific genes, and ten cardiovascular biomarkers. We used linear mixed-effect models to examine the associations between PM2.5 and methylation. We also performed causal mediation analyses to evaluate the potential mediation of methylation in the associations between PM2.5 and biomarkers. RESULTS Air purification increased DNA methylation in repetitive elements and all candidate genes. An IQR increase (64μg/m(3)) in PM2.5 was significantly associated with reduction of methylation in LINE-1 (1.44%), one pro-inflammatory gene (CD40LG, 9.13%), two pro-coagulant genes (F3, 15.20%; SERPINE1, 3.69%), and two pro-vasoconstriction genes (ACE, 4.64%; EDN1, 9.74%). There was a significant mediated effect (17.82%, P=0.03) of PM2.5 on sCD40L protein through CD40LG hypomethylation. Hypomethylation in other candidate genes generally showed positive but non-significant mediation. CONCLUSIONS This intervention study provided robust human evidence that ambient PM2.5 could induce rapid decreases in DNA methylation and consequently partly mediate its effects on cardiovascular biomarkers.
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Affiliation(s)
- Renjie Chen
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China; Key Lab of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai 200032, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Fudan University, Shanghai 200032, China
| | - Xia Meng
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta 30322, GA, USA
| | - Ang Zhao
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China
| | - Cuicui Wang
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China
| | - Changyuan Yang
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China
| | - Huichu Li
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China
| | - Jing Cai
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China; Key Lab of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai 200032, China
| | - Zhuohui Zhao
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China; Key Lab of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai 200032, China
| | - Haidong Kan
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China; Key Lab of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai 200032, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Fudan University, Shanghai 200032, China.
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150
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Environmental NO2 and CO Exposure: Ignored Factors Associated with Uremic Pruritus in Patients Undergoing Hemodialysis. Sci Rep 2016; 6:31168. [PMID: 27507591 PMCID: PMC4979007 DOI: 10.1038/srep31168] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 07/13/2016] [Indexed: 11/08/2022] Open
Abstract
Uremic pruritus (UP), also known as chronic kidney disease-associated pruritus, is a common and disabling symptom in patients undergoing maintenance hemodialysis (MHD). The pathogenesis of UP is multifactorial and poorly understood. Outdoor air pollution has well-known effects on the health of patients with allergic diseases through an inflammatory process. Air pollution-induced inflammation could occur in the skin and aggravate skin symptoms such as pruritus or impair epidermal barrier function. To assess the role of air pollutants, and other clinical variables on uremic pruritus (UP) in HD patients, we recruited 866 patients on maintenance HD. We analyzed the following variables for association with UP: average previous 12-month and 24-month background concentrations for nitrogen dioxide (NO2) and carbon monoxide (CO), and suspended particulate matter of <2.5 μm (PM2.5). In a multivariate logistic regression, hemodialysis duration, serum ferritin levels, low-density lipoprotein levels, and environmental NO2/CO levels were positively associated with UP, and serum albumin levels were negatively associated with UP. This cross-sectional study showed that air pollutants such as NO2 and CO might be associated with UP in patients with MHD.
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