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Taylor MP, Isley CF, Glover J. Prevalence of childhood lead poisoning and respiratory disease associated with lead smelter emissions. ENVIRONMENT INTERNATIONAL 2019; 127:340-352. [PMID: 30954720 DOI: 10.1016/j.envint.2019.01.062] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 01/21/2019] [Accepted: 01/23/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND The city of Port Pirie in South Australia has been a world leading centre for lead and zinc smelting and processing since 1889 that continues to cause contamination of its environment and resident population. This study quantifies the effect of lead and SO2 emissions from Nyrstar Port Pirie Pty Ltd's smelter on blood lead and respiratory health outcomes, respectively, and establishes what air quality values are required to better protect human health. METHOD Blood lead and emergency department presentation data collected by South Australia Health (SA Health) and lead in air and SO2 data collected by the South Australian Environment Protection Authority (SAEPA) were obtained and analysed to quantify health outcomes due to smelter emissions in Port Pirie. Regression analysis was used to assess the relationship between the concentration of lead in air and children's blood lead levels between the years of available data: 2003 to 2017. Ambient SO2 concentrations (SAEPA) measured continuously between 2008 and 2018 were 24-hour averaged and compared to daily local emergency department respiratory presentation rates (available from July 2012 to October 2018). Rates of emergency department respiratory presentations at Port Pirie and regional comparators were calculated as age-standardised rates. RESULTS The data show that increases in ambient SO2 concentrations are associated with increased rates of emergency department respiratory presentations of Port Pirie residents, in which children are over-represented. The 30-day rolling average of respiratory presentations was significantly associated (p < 0.05) with incremental increases in SO2. Analysis of the relationship between lead in air and blood lead shows that annual geometric mean air lead concentrations need to be <0.11 μg/m3 to ensure the geometric mean blood lead of Port Pirie children under 5 years is ≤5 μg/dL. For children aged 24 months, lead in air needs to be no greater than 0.082 μg/m3 (annual geometric mean) to ensure geometric mean blood lead does not exceed 5 μg/dL. CONCLUSION Current smelting emissions continue to pose a clear risk of harm to Port Pirie children. Allowable emissions must be lowered significantly to limit adverse childhood health outcomes including respiratory illness and IQ, academic achievement and socio-behavioural problems that are associated with lead exposure at levels experienced by Port Pirie children. Current SO2 levels are likely to be responsible for increased rates of emergency department respiratory presentations in Port Pirie compared with other South Australian locations. As a minimum, Australian SO2 air quality standards need to be enforced in Port Pirie to better protect human health. Lead in air needs to be approximately 80% lower than the current national standard (0.5 μg/m3) to ensure that the geometric blood lead of children under 5 years is less than or equal to 5 μg/dL.
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Affiliation(s)
- Mark Patrick Taylor
- Department of Environmental Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia.
| | - Cynthia Faye Isley
- Department of Environmental Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia
| | - John Glover
- Public Health Information Development Unit, Torrens University Australia, Adelaide, SA 5000, Australia
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Gaskin S, Heath L, Pisaniello D, Logan M, Baxter C. Skin permeation of oxides of nitrogen and sulfur from short-term exposure scenarios relevant to hazardous material incidents. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 665:937-943. [PMID: 30893753 DOI: 10.1016/j.scitotenv.2019.02.205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 12/19/2018] [Accepted: 02/13/2019] [Indexed: 06/09/2023]
Abstract
Permeation of oxides of nitrogen and sulfur gases through skin and the consequences of dermal exposure are still poorly understood. We measured the penetration profile of three common industrial gases through skin, for short-term exposures relevant to HAZMAT scenarios. Time variations of gas concentration, clothing effects, temperature and humidity on epidermal absorption and penetration were assessed. Fabric off-gassing profiles were also investigated. The results show oxides of nitrogen (NO and NO2) at airborne concentrations up to lethal inhalation levels (e.g. 3000 ppm) have little skin penetration ability. Skin absorption and reservoir effects were noted. Skin exposed to SO2 (3000 ppm/30 min) shows negligible skin absorption or penetration. Fabric on skin marginally increased SO2 absorption and subsequent ventilation did not reduce the absorbed fraction. Increased temperature and humidity had limited additional effect on skin penetration. Importantly, clothing demonstrated sink properties, especially for SO2. Short-term skin exposure relevant to accidents will not significantly contribute to body burden. The greatest concern will likely be off-gassing of chemical-laden fabric for asthma suffers. The risk-based management approach is to avoid potential secondary inhalation from fabric off-gassing by removal of outer layer of bulky clothing. Decontamination and moving into an area of enhanced ventilation may also be advised.
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Affiliation(s)
- Sharyn Gaskin
- School of Public Health, University of Adelaide, South Australia, Australia.
| | - Linda Heath
- School of Public Health, University of Adelaide, South Australia, Australia
| | - Dino Pisaniello
- School of Public Health, University of Adelaide, South Australia, Australia
| | - Michael Logan
- Research and Scientific Branch, Queensland Fire and Emergency Services, Queensland, Australia
| | - Christina Baxter
- Department of Defence, Technical Support Working Group, Combating Terrorism Technical Support Office, US Government, Virginia, USA; Emergency Response TIPS, LLC, Virginia, USA
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Cai J, Li B, Yu W, Wang H, Du C, Zhang Y, Huang C, Zhao Z, Deng Q, Yang X, Zhang X, Qian H, Sun Y, Liu W, Wang J, Yang Q, Zeng F, Norbäck D, Sundell J. Household dampness-related exposures in relation to childhood asthma and rhinitis in China: A multicentre observational study. ENVIRONMENT INTERNATIONAL 2019; 126:735-746. [PMID: 30878869 DOI: 10.1016/j.envint.2019.03.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 06/09/2023]
Abstract
During 2010-2012, we conducted an observational study on household environment and health outcomes among 40,010 preschool children from seven cities of China. Here we examined associations of six dampness-related indicators (visible mold spots, visible damp stains, damp clothing and/or bedding, water damage, condensation on windowpane, moldy odor) in the current residence and three dampness-related indicators (visible mold spots, condensation on windowpane, moldy odor) in the early residence with childhood asthma and rhinitis. In the multi-level logistic regression analyses, visible mold spots and visible damp stains in the current residence were significantly associated with the increased odds of doctor-diagnosed asthma and allergic rhinitis during lifetime-ever (adjusted odd ratios (AORs) range: 1.18-1.35). All dampness-related indicators were significantly associated with increased odds of wheeze and rhinitis during lifetime-ever and in the past 12 months (AORs range: 1.16-2.64). The cumulative numbers of damp indicators had positively dose-response relationships with the increased odds of the studied diseases. These associations for wheeze and rhinitis were similar between northern children and southern children. Similar results were found in the sensitive analyses among children without a family history of allergies and among children without asthma and allergic rhinitis. For 3-6 years-old children in mainland of China in 2011, we speculated that about 90,000 (2.02%) children with asthma and about 59,000 (1.09%) children with allergic rhinitis could be attributable to exposing to visible mold spots in the current residence. Our results suggested that early and lifetime exposures to household dampness indicators are risk factors for childhood asthma and rhinitis.
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Affiliation(s)
- Jiao Cai
- Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, China; National Centre for International Research of Low-carbon and Green Buildings (Ministry of Science and Technology), Chongqing University, Chongqing, China
| | - Baizhan Li
- Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, China; National Centre for International Research of Low-carbon and Green Buildings (Ministry of Science and Technology), Chongqing University, Chongqing, China.
| | - Wei Yu
- Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, China; National Centre for International Research of Low-carbon and Green Buildings (Ministry of Science and Technology), Chongqing University, Chongqing, China
| | - Han Wang
- Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, China; National Centre for International Research of Low-carbon and Green Buildings (Ministry of Science and Technology), Chongqing University, Chongqing, China
| | - Chenqiu Du
- Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, China; National Centre for International Research of Low-carbon and Green Buildings (Ministry of Science and Technology), Chongqing University, Chongqing, China
| | - Yinping Zhang
- School of Architecture, Tsinghua University, Beijing, China
| | - Chen Huang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, China
| | - Zhuohui Zhao
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Key Lab of Health Technology Assessment, National Health and Family Planning Commission of the People's Republic of China, Fudan University, Shanghai, China
| | - Qihong Deng
- School of Public Health, Central South University, Changsha, Hunan, China
| | - Xu Yang
- College of Life Sciences, Central China Normal University, Wuhan, China
| | - Xin Zhang
- Research Center for Environmental Science and Engineering, Shanxi University, Taiyuan, China
| | - Hua Qian
- School of Energy and Environment, Southeast University, Nanjing, China
| | - Yuexia Sun
- School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Wei Liu
- School of Architecture, Tsinghua University, Beijing, China
| | - Juan Wang
- Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, China; Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala SE-751, Sweden
| | - Qin Yang
- Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, China; National Centre for International Research of Low-carbon and Green Buildings (Ministry of Science and Technology), Chongqing University, Chongqing, China
| | - Fanbin Zeng
- Joint International Research Laboratory of Green Buildings and Built Environments (Ministry of Education), Chongqing University, Chongqing, China; National Centre for International Research of Low-carbon and Green Buildings (Ministry of Science and Technology), Chongqing University, Chongqing, China
| | - Dan Norbäck
- Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala SE-751, Sweden
| | - Jan Sundell
- School of Environmental Science and Engineering, Tianjin University, Tianjin, China
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Silva MDJ, de Santana MBR, Tosta BR, Espinheira RP, Alcantara-Neves NM, Barreto ML, Figueiredo CA, Costa RDS. Variants in the IL17 pathway genes are associated with atopic asthma and atopy makers in a South American population. ALLERGY, ASTHMA, AND CLINICAL IMMUNOLOGY : OFFICIAL JOURNAL OF THE CANADIAN SOCIETY OF ALLERGY AND CLINICAL IMMUNOLOGY 2019; 15:28. [PMID: 31168303 PMCID: PMC6489266 DOI: 10.1186/s13223-019-0340-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/10/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND Asthma is a complex disorder with multiple phenotypes which can influence its severity and response to treatment. The TH17 lymphocytes producing IL-17A and IL17-F cytokines, may have a role on asthma inflammation. The aim of our study was to evaluate the association between genetic variants in IL17 pathway genes with asthma and atopy markers. MATERIALS AND METHODS Genotyping was performed using a commercial panel in 1245 participants of SCAALA cohort. The study included 91 SNVs in IL-17 pathway genes. Logistic regressions for asthma and atopy markers were performed using PLINK 1.9. In silico analyses were performed using rSNPbase, RegulomeDB, and Gtex portal for in silico gene expression. RESULTS AND DISCUSSION The T allele of rs1974226 in IL17A was positively associated with asthma (OR: 1.37; 95% CI 1.02-1.82). Also, the T allele of rs279548 was positively associated with asthma (OR: 1.30; 95% CI 1.02-1.64), atopy (OR: 1.62; 95% CI 1.05-2.50) and increased expression of the IL17RC in lung and whole blood tissues. The others genetic variants in the IL17 pathways genes were associated with both protection and risk for asthma development as well as with IgE levels. CONCLUSION The genetic variants in IL-17-related genes are associated with the atopic asthma phenotype and IgE production.
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Affiliation(s)
- Milca de J. Silva
- Departamento de Biorregulação, Laboratório de Imunofarmacologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia Brazil
| | - Maria B. R. de Santana
- Departamento de Biorregulação, Laboratório de Imunofarmacologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia Brazil
| | - Bruna R. Tosta
- Departamento de Biorregulação, Laboratório de Imunofarmacologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia Brazil
| | - Roberta P. Espinheira
- Departamento de Biorregulação, Laboratório de Imunofarmacologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia Brazil
| | - Neuza Maria Alcantara-Neves
- Departamento de Ciências da Biointeração, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia Brazil
| | | | - Camila Alexandrina Figueiredo
- Departamento de Biorregulação, Laboratório de Imunofarmacologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia Brazil
| | - Ryan dos S. Costa
- Departamento de Biorregulação, Laboratório de Imunofarmacologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia Brazil
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Dėdelė A, Miškinytė A, Gražulevičienė R. The impact of particulate matter on allergy risk among adults: integrated exposure assessment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:10070-10082. [PMID: 30756350 DOI: 10.1007/s11356-019-04442-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 01/30/2019] [Indexed: 06/09/2023]
Abstract
Exposure assessment is an important part in environmental epidemiology for determining the associations of environmental factors with health effects. One of the greatest challenges for personal exposure assessment is associated with peoples' mobility during the day and spatial and temporal dynamics of air pollution. In this study, the impact of PM10 (particulate matter less than 10 μm) on allergy risk among adults was assessed using objective methods of exposure assessment. The primary objective of the present study was to estimate personal exposure to PM10 based on individual daily movement patterns. Significant differences between the concentration of PM10 in different microenvironments (MEs) and personal exposure to PM10 were determined. Home exposure accounted for the largest part of PM10 exposure. Thirty-five percent of PM10 exposure was received in other non-home MEs. Allergy risk increased significantly with increasing exposure to PM10. Adults exposed to the highest levels of PM10 exposure had a twice-higher risk of allergies than adults exposed to the lowest levels of PM10 exposure. The study results have practical relevance for exposure assessment to environmental factors and its impact on health effects.
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Affiliation(s)
- Audrius Dėdelė
- Department of Environmental Sciences, Faculty of Natural Sciences, Vytautas Magnus University, Vileikos Street 8, 44404, Kaunas, Lithuania.
| | - Auksė Miškinytė
- Department of Environmental Sciences, Faculty of Natural Sciences, Vytautas Magnus University, Vileikos Street 8, 44404, Kaunas, Lithuania
| | - Regina Gražulevičienė
- Department of Environmental Sciences, Faculty of Natural Sciences, Vytautas Magnus University, Vileikos Street 8, 44404, Kaunas, Lithuania
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Cai T, Zhang Y, Ren X, Bielory L, Mi Z, Nolte CG, Gao Y, Leung LR, Georgopoulos PG. Development of a semi-mechanistic allergenic pollen emission model. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 653:947-957. [PMID: 30759620 PMCID: PMC7841766 DOI: 10.1016/j.scitotenv.2018.10.243] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/15/2018] [Accepted: 10/17/2018] [Indexed: 05/31/2023]
Abstract
Modeling pollen emission processes is crucial for studying the spatiotemporal distributions of airborne allergenic pollen. A semi-mechanistic emission model was developed based on mass balance of pollen grain fluxes in the surroundings of allergenic plants. The emission model considers direct emission and resuspension and accounts for influences of temperature, wind velocity, and relative humidity. Modules of this emission model have been developed and parameterized with multiple years of pollen count observations to provide pollen season onset and duration, hourly flowering likelihood, and vegetation coverage for oak and ragweed, as two examples. The simulated spatiotemporal pattern of pollen emissions generally follows the corresponding pattern of area coverage of allergenic plants and diurnal pattern of hourly flowering likelihood. It is found that oak pollen emissions start from the Southern part of the Contiguous United States (CONUS) in March and then shift gradually toward the Northern CONUS, with a maximum emission flux of 5.8 × 106 pollen/(m2 h). On the other hand, ragweed pollen emissions start from the Northern CONUS in August and then shift gradually toward the Southern CONUS. The mean ragweed emission flux during August to September can increase up to 2.4 × 106 pollen/(m2 h). This emission model is robust with respect to the input parameters for oak and ragweed. Qualitative evaluations of the model performance indicated that the simulated pollen emission is strongly correlated with the plant coverages and observed pollen counts. This model could also be applied to other pollen species given the relevant parameters.
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Affiliation(s)
- Ting Cai
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ 08854, USA; Department of Environmental Sciences, Rutgers University, New Brunswick, NJ 08901, USA
| | - Yong Zhang
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ 08854, USA; Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ 08854, USA
| | - Xiang Ren
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ 08854, USA; Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ 08854, USA
| | - Leonard Bielory
- Department of Environmental Sciences, Rutgers University, New Brunswick, NJ 08901, USA
| | - Zhongyuan Mi
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ 08854, USA; Department of Environmental Sciences, Rutgers University, New Brunswick, NJ 08901, USA
| | - Christopher G Nolte
- National Exposure Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Yang Gao
- Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - L Ruby Leung
- Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Panos G Georgopoulos
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ 08854, USA; Department of Environmental Sciences, Rutgers University, New Brunswick, NJ 08901, USA; Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ 08854, USA; Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ 08854, USA; Department of Pharmacology, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
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Sun L, Luo W, Sun W, Yang J. Efficient nonthermal plasma degradation of toluene over NiO catalyst with limited NOx generation. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03769-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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108
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Factors Associated with Persistent Lower Respiratory Symptoms or Asthma among Residents Exposed to a Sulphur Stockpile Fire Incident. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16030438. [PMID: 30717374 PMCID: PMC6388145 DOI: 10.3390/ijerph16030438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 01/18/2019] [Accepted: 01/31/2019] [Indexed: 01/26/2023]
Abstract
Introduction: Residents of Macassar, South Africa, were exposed to sulphur dioxide vapours (SO2) caused by an ignited sulphur stockpile, which produced peak hourly SO2 levels of 20–200 ppm. The aim of this study was to assess the risk factors associated with persistent lower respiratory symptoms (LRS) or asthma six years after acute exposure to high SO2 levels. Methods: A case-control study of residents that presented for a health evaluation six years after the incident was conducted. Survey instruments included a questionnaire, clinical examination and medical record review by an expert panel. A “case” was defined as a resident with persistent LRS/asthma. The Industrial Source Complex Short Term Model (ISCST 3) was used to predict time-averaged hourly SO2 levels. Results: A previous history of pulmonary tuberculosis (PTB) was associated with persistent LRS/asthma (ORudj: 3.49, CI: 1.46–8.35). Cases were more likely to report chest tightness (ORudj: 9.93; CI: 5.15–19.11) at the time of the incident. Peak exposure at hour 15 was associated with persistent LRS/asthma (ORadj: 1.04; CI: 1.01–1.07). Conclusion: LRS/asthma persisted in some individuals six years after acute SO2 exposure. Aside from peak exposures, initial chest tightness and a previous history of PTB were the strong predictors of persistent LRS/asthma.
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Li M, Fan X, Ji L, Fan Y, Xu L. Exacerbating effects of trimellitic anhydride in ovalbumin-induced asthmatic mice and the gene and protein expressions of TRPA1, TRPV1, TRPV2 in lung tissue. Int Immunopharmacol 2019; 69:159-168. [PMID: 30716586 DOI: 10.1016/j.intimp.2019.01.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 01/11/2019] [Accepted: 01/27/2019] [Indexed: 12/27/2022]
Abstract
With the increasing morbidity and mortality of asthma, asthma aggravated by environmental pollution has drawn more attention. This study investigated the exacerbating effects of trimellitic anhydride (TMA), a typical pollutant, in ovalbumin (OVA)-induced asthmatic mice and the gene and protein expressions of TRPA1, V1, V2 in lung tissue. Female BALB/c mice were respectively administered for 42 days as follow: sensitized and challenged with OVA, sensitized and challenged with TMA, sensitized with OVA and challenged with OVA plus TMA, as well as sensitized and challenged with OVA plus TMA. 24 h after the last challenge, the changes in airway resistance (RI) and lung dynamic compliance (Cdyn) were tested. The levels of the inflammatory cells in blood and bronchoalveolar lavage fluid (BALF) were determined. The gene and protein expressions of TRPA1, V1, V2 in lung tissue were examined, and levels of interleukin (IL)-4, -13, substance P (SP), prostaglandin D2 (PGD2), nerve growth factor (NGF) in BALF and the supernatant of lung homogenate were measured. The results indicated that OVA plus TMA significantly increased the amount of inflammatory cells in blood and BALF, enhanced RI while decreased Cdyn, and aggravated lung injury. Increased gene and protein expressions of TRPA1, V1, V2 in lung tissue, level of IL-4 in the supernatant of lung homogenate, levels of IL-13, SP, PGD2, NGF in BALF and the supernatant of lung homogenate were observed. It was suggested that exacerbating effects of TMA in OVA-induced asthma might be related to the regulation of TRPA1, V1, V2 and relevant neurokines.
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Affiliation(s)
- Mengwen Li
- School of Basic Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xinsheng Fan
- School of Basic Medicine, Nanjing University of Chinese Medicine, Nanjing, China.
| | - Leilei Ji
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yuhao Fan
- School of Basic Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Li Xu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
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Liu F, Lakey PSJ, Berkemeier T, Tong H, Kunert AT, Meusel H, Cheng Y, Su H, Fröhlich-Nowoisky J, Lai S, Weller MG, Shiraiwa M, Pöschl U, Kampf CJ. Atmospheric protein chemistry influenced by anthropogenic air pollutants: nitration and oligomerization upon exposure to ozone and nitrogen dioxide. Faraday Discuss 2019; 200:413-427. [PMID: 28574569 DOI: 10.1039/c7fd00005g] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The allergenic potential of airborne proteins may be enhanced via post-translational modification induced by air pollutants like ozone (O3) and nitrogen dioxide (NO2). The molecular mechanisms and kinetics of the chemical modifications that enhance the allergenicity of proteins, however, are still not fully understood. Here, protein tyrosine nitration and oligomerization upon simultaneous exposure of O3 and NO2 were studied in coated-wall flow-tube and bulk solution experiments under varying atmospherically relevant conditions (5-200 ppb O3, 5-200 ppb NO2, 45-96% RH), using bovine serum albumin as a model protein. Generally, more tyrosine residues were found to react via the nitration pathway than via the oligomerization pathway. Depending on reaction conditions, oligomer mass fractions and nitration degrees were in the ranges of 2.5-25% and 0.5-7%, respectively. The experimental results were well reproduced by the kinetic multilayer model of aerosol surface and bulk chemistry (KM-SUB). The extent of nitration and oligomerization strongly depends on relative humidity (RH) due to moisture-induced phase transition of proteins, highlighting the importance of cloud processing conditions for accelerated protein chemistry. Dimeric and nitrated species were major products in the liquid phase, while protein oligomerization was observed to a greater extent for the solid and semi-solid phase states of proteins. Our results show that the rate of both processes was sensitive towards ambient ozone concentration, but rather insensitive towards different NO2 levels. An increase of tropospheric ozone concentrations in the Anthropocene may thus promote pro-allergic protein modifications and contribute to the observed increase of allergies over the past decades.
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Affiliation(s)
- Fobang Liu
- Multiphase Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany
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Kordulewska NK, Cieślińska A, Fiedorowicz E, Jarmołowska B, Kostyra E. High Expression of IL-1RI and EP₂ Receptors in the IL-1β/COX-2 Pathway, and a New Alternative to Non-Steroidal Drugs-Osthole in Inhibition COX-2. Int J Mol Sci 2019; 20:E186. [PMID: 30620999 PMCID: PMC6337662 DOI: 10.3390/ijms20010186] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 12/07/2018] [Accepted: 12/27/2018] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Osthole (7-methoxy-8-isopentenylcoumarin) is natural coumarin isolated from the fruit of Cnidium monnieri (L.) Cusson, which is commonly used in medical practice of traditional Chinese medicine (TCM) in various diseases including allergies and asthma disorders. PURPOSE Osthole was tested for the anti-histamine, anti-allergic, and inhibitory effects of COX-2 (cyclooxygenase-2) in children with diagnosed allergies. Additionally, we hypothesize that stated alterations in children with diagnosed allergies including increased expression of interleukin 1-β receptor type 1 (IL-1 type I) and E-prostanoid (EP) 2 receptors, as well as raised expression, production, and activity of COX-2 and IL-1β in incubated medium are approximately connected. Furthermore, we establish the mechanisms included in the changed regulation of the COX-2 pathway and determine whether osthole may be COX-2 inhibitor in peripheral blood mononuclear cells (PBMCs). METHOD PBMCs were obtained from peripheral blood of healthy children (control, n = 28) and patients with diagnosed allergies (allergy, n = 30). Expression of the autocrine loop components regulating PGE₂ production and signaling namely IL-1 type I receptor (IL-1RI), cyclooksygenaze-2 (COX-2), E-prostanoid (EP) 2, and also histamine receptor-1 (HRH-1) was assessed at baseline and after stimulation with histamine, osthole, and a mixture of histamine/osthole 1:2 (v/v). This comprised the expression of histamine receptor 1 (HRH-1), IL-1RI, COX-2, EP₂ receptor, and the secretion of IL-1β and COX-2 in cultured media and sera. RESULTS Compared with control group, basal mRNA expression levels of HRH-1, IL-1RI, COX-2, and EP₂ were higher in the allergy group. Histamine-induced EP₂ and COX-2 expression mRNA levels were also increased. CONCLUSIONS Osthole successively inhibits PGE₂ and COX-2 mRNA expression. Furthermore, osthole reduces the secretion of COX-2 protein in signaling cellular mechanisms. Changed EP₂ expression in children with allergies provides higher IL-1RI induction, increasing IL-1β capacity to increase COX-2 expression. This effects in higher PGE₂ production, which in turn increases its capability to induce IL-1RI.
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MESH Headings
- Case-Control Studies
- Child
- Child, Preschool
- Coumarins/chemistry
- Coumarins/pharmacology
- Cyclooxygenase 2/metabolism
- Cyclooxygenase Inhibitors/pharmacology
- Female
- Gene Expression Regulation/drug effects
- Histamine/chemistry
- Histamine/pharmacology
- Humans
- Hypersensitivity/genetics
- Hypersensitivity/pathology
- Interleukin-1beta/metabolism
- Leukocytes, Mononuclear/drug effects
- Leukocytes, Mononuclear/metabolism
- Male
- Models, Biological
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, Histamine H1/genetics
- Receptors, Histamine H1/metabolism
- Receptors, Interleukin-1 Type I/genetics
- Receptors, Interleukin-1 Type I/metabolism
- Receptors, Prostaglandin E, EP2 Subtype/genetics
- Receptors, Prostaglandin E, EP2 Subtype/metabolism
- Signal Transduction/drug effects
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Affiliation(s)
- Natalia Karolina Kordulewska
- Department of Biology and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1A Street, 10-719 Olsztyn, Poland.
| | - Anna Cieślińska
- Department of Biology and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1A Street, 10-719 Olsztyn, Poland.
| | - Ewa Fiedorowicz
- Department of Biology and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1A Street, 10-719 Olsztyn, Poland.
| | - Beata Jarmołowska
- Department of Biology and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1A Street, 10-719 Olsztyn, Poland.
| | - Elżbieta Kostyra
- Department of Biology and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1A Street, 10-719 Olsztyn, Poland.
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113
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Garrido-Olvera LP, Sanchez-Bautista JE, Alvarado-Alvarado D, Landeros-Rivera B, Álvarez JR, Vargas R, González-Zamora E, Balmaseda J, Lara-García HA, Martínez A, Ibarra IA. Confined toluene within InOF-1: CO2 capture enhancement. RSC Adv 2019; 9:32864-32872. [PMID: 35529732 PMCID: PMC9073166 DOI: 10.1039/c9ra05991a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 09/30/2019] [Indexed: 11/21/2022] Open
Abstract
The confinement of small amounts of toluene demonstrated an enhanced CO2 capture for InOF-1 as a result of a bottleneck effect and synergistic interactions.
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114
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Holm SM, Leonard V, Durrani T, Miller MD. Do we know how best to disinfect child care sites in the United States? A review of available disinfectant efficacy data and health risks of the major disinfectant classes. Am J Infect Control 2019; 47:82-91. [PMID: 30172610 DOI: 10.1016/j.ajic.2018.06.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 06/24/2018] [Accepted: 06/25/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Children in child care settings have a high infectious burden. They are frequently exposed to sanitizing and disinfecting agents, whose toxicities have not been studied in these settings. Current guidance on the preferred disinfection agents for child care is vague. METHODS This article combines 2 different sources of information: the Environmental Protection Agency registration data on the efficacy of hospital-grade disinfectants and a review of the research on the toxicities of the most common of these disinfectants to summarize information that could be used for more evidence-based early care and education disinfection regulations and guidelines. RESULTS Coverage of these organisms varied both between disinfectant classes (defined by active ingredient), as well as within classes. The 3 most common active ingredients in the database-quaternary ammonias, bleaches, and hydrogen peroxides-had 251, 63, and 31 products, respectively. Quaternary ammonias and bleaches are both known asthmagens, with the potential for toxic gas release when mixed. Quaternary ammonias may also cause reproductive toxicity. Disinfectant-grade peroxides have relatively low inhalational toxicity. CONCLUSIONS A clear rationale is needed to establish policies for determining preferable disinfection products for use in child care settings, based on efficacy against relevant pathogens, toxicity, ease of use, and cost. When other factors are equal, the use of peroxide-based disinfectant products is recommended to minimize inhalational toxicity.
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115
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Noise Indicators for Size Distributions of Airborne Particles and Traffic Activities in Urban Areas. SUSTAINABILITY 2018. [DOI: 10.3390/su10124599] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The aim of this study was to explore the relationships among the particle number concentration (PNC), noise, and traffic conditions. Field measurements were conducted to measure the temporal variabilities of the noise levels and PNC over 24 h in a location adjacent to three main traffic roads in Seoul, Korea. The PNC was measured in the range of 0.3 to 10 µm. The noise data was measured by utilizing both the overall levels and spectral characteristics. Traffic data including volumes and speeds of vehicles on the roads were also collected. The results showed that the correlations among the three key parameters varied depending on changes in the noise frequency and particle size. The noise levels at 100–200 Hz were positively correlated with traffic volume and submicron particles. In contrast, they exhibited inverse correlations with the traffic speed and the number of larger particles (>2.5 µm). Compared to noise levels at 100–200 Hz, noise levels at 1–2 kHz exhibited reverse relationships between the traffic and PNC. Submicron particles (0.3–1.0 µm) tended to be more strongly associated with noise levels during the daytime, while those greater than 2.5 µm maintained relatively stable correlations with the noise throughout the day. The findings address the importance of temporal and spectral-specific monitoring of air and noise pollutants for a better understanding of the exposure of the community to air and noise pollution.
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116
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Guo H. Comparisons of combined oxidant capacity and redox-weighted oxidant capacity in their association with increasing levels of FeNO. CHEMOSPHERE 2018; 211:584-590. [PMID: 30096571 DOI: 10.1016/j.chemosphere.2018.07.191] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 07/04/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Some ozone (O3) and nitrogen dioxides (NO2) health effects studies use Ox (sum value) as a surrogate. However, little is known about how this related to Oxwt (weighted value). OBJECTIVE We investigated the effects of redox-weighted oxidant capacity (Oxwt) on fractional exhaled nitric oxide (FeNO), a biomarker of airway inflammation, in a set of chronic obstructive pulmonary disease (COPD) patients. We also compare combined oxidant capacity (Ox) and Oxwt in their associations with increasing levels of FeNO. METHODS We measured FeNO values in 600 participants who have COPD at Shanghai Pulmonary Hospital. Ox was calculated directly by the sum of O3 and NO2. The redox-weighted oxidant capacity was calculated by denoting Oxwt as the weighted average of redox potentials. We applied generalized additive models (GAM) to investigate the impacts of Ox and Oxwt on FeNO levels, respectively. We fitted the same models for the influence of O3 and NO2 individually and jointly on FeNO levels to compare the result of Ox and Oxwt. RESULTS Oxwt were significantly linked with FeNO levels. The impact was robustest in current day after exposure, and were closely linked with the adjustment of PM2.5. A 10 μg m-3 increase in average Oxwt concentrations was linked to 0.88 (95% CI: -1.46, 3.28) increase, whereas a 10 μg m-3 increase in average Ox concentration was linked to 0.62 (95% CI: -0.79, 2.07) increase in FeNO. In two-pollutant models, an increase of 10 μg m-3 in average O3 concentrations with adjustment of NO2 was associated with 0.57 (95% CI: -1.26, 2.01) increase in FeNO. The impact estimates of Ox and Oxwt were statistically significant among males, non-smoking and elders who age above 65 years old. CONCLUSIONS This analysis demonstrated that Oxwt is used as a better indicator of atmospheric oxidative capacity as a proxy of O3 and NO2 in further epidemiological studies.
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Affiliation(s)
- Huibin Guo
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China.
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Abstract
Abstract
Background
Air pollutants such as particulate matter (PM2.5) and nitrogen dioxide (NO2) in outdoor air have long been suspected of causing the development of asthma and allergic rhinitis. However, a variety of systematic reviews have reached different conclusions in the last 15 years on whether these air pollutants do in actual fact play a causal role in the onset of asthma, allergic rhinitis, and eczema.
Methods
Based on published systematic reviews and the most recent publications, the current state of knowledge on epidemiological evidence is presented and the potential for primary prevention of these allergic diseases by reducing or avoiding exposure to these air pollutants evaluated.
Results
Despite conducting an extensive literature search, analyzing the most recent results, and focusing on the birth cohort studies most relevant to the question in hand, epidemiological results do not adequately support the concept of a causal relationship between the two air pollutants in question, PM2.5 and NO2, and asthma. Epidemiological studies predominantly show no effect of these air pollutants on allergic sensitization and the onset of allergic rhinitis. The small number of studies that have investigated the link between air pollutants and eczema largely revealed there to be no link.
Conclusion
If the evidence for the causal role of air pollutants in the onset of allergies is inconclusive, one must assume that it is probably not possible to achieve primary prevention of allergies by improving air quality. However, there is sufficient evidence to show that air pollutants can trigger exacerbations of allergic diseases. This alone justifies ensuring that the existing threshold values for air pollutants are adhered to, in order to protect particularly allergy sufferers from health impairments.
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118
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Relevance Analysis on the Variety Characteristics of PM2.5 Concentrations in Beijing, China. SUSTAINABILITY 2018. [DOI: 10.3390/su10093228] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Air pollution has become one of the most serious environmental problems in the world. Considering Beijing and six surrounding cities as main research areas, this study takes the daily average pollutant concentrations and meteorological factors from 2 December 2013 to 13 October 2017 into account and studies the spatial and temporal distribution characteristics and the relevant relationship of particulate matter smaller than 2.5 μm (PM2.5) concentrations in Beijing. Based on correlation analysis and geo-statistics techniques, the inter-annual, seasonal, and diurnal variation trends and temporal spatial distribution characteristics of PM2.5 concentration in Beijing are studied. The study results demonstrate that the pollutant concentrations in Beijing exhibit obvious seasonal and cyclical fluctuation patterns. Air pollution is more serious in winter and spring and slightly better in summer and autumn, with the spatial distribution of pollutants fluctuating dramatically in different seasons. The pollution in southern Beijing areas is more serious and the air quality in northern areas is better in general. The diurnal variation of air quality shows a typical seasonal difference and the daily variation of PM2.5 concentrations present a “W” type of mode with twin peaks. Besides emission and accumulation of local pollutants, air quality is easily affected by the transport effect from the southwest. The PM2.5 and PM10 concentrations measured from the city of Langfang are taken as the most important factors of surrounding pollution factors to PM2.5 in Beijing. The concentrations of PM10 and carbon monoxide (CO) concentrations in Beijing are the most significant local influencing factors to PM2.5 in Beijing. Extreme wind speeds and maximal wind speeds are considered to be the most significant meteorological factors affecting the transport of pollutants across the region. When the wind direction is weak southwest wind, the probability of air pollution is greater and when the wind direction is north, the air quality is generally better.
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119
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Zhang J, Liu J, Ren L, Wei J, Duan J, Zhang L, Zhou X, Sun Z. PM 2.5 induces male reproductive toxicity via mitochondrial dysfunction, DNA damage and RIPK1 mediated apoptotic signaling pathway. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 634:1435-1444. [PMID: 29710643 DOI: 10.1016/j.scitotenv.2018.03.383] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 03/26/2018] [Accepted: 03/31/2018] [Indexed: 06/08/2023]
Abstract
Recent years, air pollution has been a serious problem, and PM2.5 is the main air particulate pollutant. Studies have investigated that PM2.5 is a risky factor to the deterioration of semen quality in males. But, the related mechanism is still unclear. To explore the effect of PM2.5, Sprague Dawley (SD) rats were exposed to PM2.5 (0, 1.8, 5.4 and 16.2mg/kg.bw.) through intratracheal instillation. The exposure was performed once every 3days and continued for 30days. In vitro, GC-2spd cells were treated using 0, 50, 100, 200μg/mL PM2.5 for 24h. The data showed that sperm relative motility rates and density were remarkably decreased, while sperm malformation rates were significantly increased with exposure to the PM2.5. The expression of Fas/FasL/RIPK1/FADD/Caspase-8/Caspase-3 and the level of 8-OHdG expression in testes were significantly increased after exposure to PM2.5. Additionally, in vitro the results showed that PM2.5 inhibited cell viability, increased the release of lactate dehydrogenase (LDH) by increasing reactive oxygen species (ROS) level. And ROS induced-DNA damage led to cell cycle arrest at G0/G1 phases and proliferation inhibition. Similar to the vivo study, the expressions of Fas/FasL/RIPK1/FADD/Caspase-8/Caspase-3 in GC-2spd cells were significantly increased after exposure to PM2.5 for 24-h. In addition, PM2.5 decreased the levels of ATP by impairing mitochondria structures, which led to energy metabolism obstruction resulted in the decrease of sperm motility. The above three aspects together resulted in the decrease in sperm quantity and quality.
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Affiliation(s)
- Jin Zhang
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jianhui Liu
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Lihua Ren
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing 100069, China; School of Nursing, Peking University, Beijing 100191, China
| | - Jialiu Wei
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Junchao Duan
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Lefeng Zhang
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China; Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China.
| | - Xianqing Zhou
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
| | - Zhiwei Sun
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
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Buoli M, Grassi S, Caldiroli A, Carnevali GS, Mucci F, Iodice S, Cantone L, Pergoli L, Bollati V. Is there a link between air pollution and mental disorders? ENVIRONMENT INTERNATIONAL 2018; 118:154-168. [PMID: 29883762 DOI: 10.1016/j.envint.2018.05.044] [Citation(s) in RCA: 161] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/25/2018] [Accepted: 05/25/2018] [Indexed: 05/21/2023]
Abstract
Several studies have demonstrated the association between air pollution and different medical conditions including respiratory and cardiovascular diseases. Air pollutants might have a role also in the etiology of mental disorders in the light of their toxicity on central nervous system. Purpose of the present manuscript was to review and summarize available data about an association between psychiatric disorders and air pollution. A research in the main database sources has been conducted to identify relevant papers about the topic. Different air pollutants and in particular PM and nitric oxides have been associated with poor mental health; long exposition to PM2.5 has been associated with an increased risk of new onset of depressive symptoms (Cohen's effect size d: 0.05-0.81), while increased concentration of nitric dioxide in summer with worsening of existing depressive conditions (Cohen's effect size d: 0.05-1.77). However, the interpretation of these finding should take into account the retrospective design of most of studies, different periods of observations, confounding factors such as advanced age or medical comorbidity. Further studies with rigorous methodology are needed to confirm the results of available literature about this topic.
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Affiliation(s)
- Massimiliano Buoli
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Via F. Sforza 35, 20122 Milan, Italy.
| | - Silvia Grassi
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Via F. Sforza 35, 20122 Milan, Italy
| | - Alice Caldiroli
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Via F. Sforza 35, 20122 Milan, Italy
| | - Greta Silvia Carnevali
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Via F. Sforza 35, 20122 Milan, Italy
| | - Francesco Mucci
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Via F. Sforza 35, 20122 Milan, Italy
| | - Simona Iodice
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via san Barnaba 8, 20122 Milan, Italy
| | - Laura Cantone
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via san Barnaba 8, 20122 Milan, Italy
| | - Laura Pergoli
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via san Barnaba 8, 20122 Milan, Italy
| | - Valentina Bollati
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via san Barnaba 8, 20122 Milan, Italy
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Zou QY, Shen Y, Ke X, Hong SL, Kang HY. Exposure to air pollution and risk of prevalence of childhood allergic rhinitis: A meta-analysis. Int J Pediatr Otorhinolaryngol 2018; 112:82-90. [PMID: 30055746 DOI: 10.1016/j.ijporl.2018.06.039] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 06/22/2018] [Accepted: 06/23/2018] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Allergic rhinitis (AR), a common chronic inflammatory disease in the upper airways. The prevalence of AR in children seems to be increasing recently, and the most significant causes of the increase are thought to be changes in environmental factors, especially air pollution. However, we could not find any meta-analysis on the risk of air pollution exposure on the prevalence of AR in childhood. The aim of this research was to carry out a meta-analysis on the results of recent studies (21 s t century) to present valid information about exposure to air pollution and risk of prevalence of childhood AR. METHODS PubMed, Science, Google Scholar, Elsevier and MDPI web database were searched up to January 1, 2000 to February 28, 2018. Including of air pollution and AR in childhood related to the observation of literature. Meta-analysis, study quality assessment, heterogeneity analysis and publication bias test were using Stata-MP 14.1 and Review Manager version 5.3 software. RESULTS 13 studies will be included in the meta-analysis (8 cross-sectional studies, 5 cohort studies). Exposure to NO2 (OREurope = 1.031, 95%CI [1.002,1.060], P = 0.033; ORAsia = 1.236, 95%CI [1.099,1.390], P = 0.000; ORoverall = 1.138, 95%CI [1.052,1.231], P = 0.001); Exposure to SO2 (OREurope = 1.148, 95%CI [1.030,1.279], P = 0.012; ORAsia = 1.044, 95%CI [0.954,1.142], P = 0.352; ORoverall = 1.085, 95%CI [1.013,1.163], P = 0.020); Exposure to PM10 (OREurope = 1.190, 95%CI [1.092,1.297], P = 0.000; ORAsia = 1.075, 95%CI [0.995,1.161], P = 0.066; ORoverall = 1.125, 95%CI [1.062,1.191], P = 0.000); Exposure to PM2.5 (OREurope = 1.195, 95%CI [1.050,1.360], P = 0.007; ORAsia = 1.163, 95%CI [1.074,1.260], P = 0.000; ORoverall = 1.172, 95%CI [1.095,1.254], P = 0.000). CONCLUSIONS Exposed to air pollution probable is a risk of prevalence of childhood AR. And the prevalence of AR will be increase when exposed to NO2, SO2, PM10 and PM2.5, but maybe the relationship between SO2/PM10 and prevalence of AR are not closely in Asia.
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Affiliation(s)
- Qi-Yuan Zou
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, PR China.
| | - Yang Shen
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, PR China.
| | - Xia Ke
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, PR China.
| | - Su-Ling Hong
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, PR China.
| | - Hou-Yong Kang
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, PR China.
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Lovett C, Sowlat MH, Saliba NA, Shihadeh AL, Sioutas C. Oxidative Potential of Ambient Particulate Matter in Beirut during Saharan and Arabian Dust Events. ATMOSPHERIC ENVIRONMENT (OXFORD, ENGLAND : 1994) 2018; 188:34-42. [PMID: 30061791 PMCID: PMC6063373 DOI: 10.1016/j.atmosenv.2018.06.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
In this study, we examine the oxidative potential of airborne particulate matter (PM) in Beirut, Lebanon, as influenced by dust events originating in the Sahara and Arabian deserts. Segregated fine (< 2.5 μm) and coarse (2.5-10 μm) PM samples collected during dust events, as well as during non-dust periods, were analyzed for chemical composition, and the in vitro alveolar macrophage (AM) assay was utilized to determine the oxidative potential of both types of samples. We performed Spearman rank-order correlation analysis between individual chemical components and the oxidative potential of PM to examine the impact of the changes in PM chemical composition due to the occurrence of dust events on overall PM oxidative potential. Our findings revealed that the oxidative potential of Beirut's urban PM during non-dust periods was much higher than during dust episodes for fine PM. Our findings also indicated that tracers of tailpipe emissions (i.e., elemental (EC) and organic carbon (OC)), non-tailpipe emissions (i.e., heavy metals including Cu, Zn, As, Cd, and Pb), and secondary organic aerosols (SOA) (i.e., water-soluble organic carbon, WSOC) were significantly associated with the oxidative potential of PM during dust days and non-dust periods. However, the contribution of desert dust aerosols to Beirut's indigenous PM composition did not exacerbate its oxidative potential, as indicated by the negative correlations between the oxidative potential of PM and the concentrations of crustal elements that were enriched during the dust days. This suggests that aerosols generated during Saharan and Arabian dust events pose no additional health risk to the population due to PM-triggered reactive oxygen species formation. These results significantly contribute to our understanding of the effects of desert dust aerosols on the composition and oxidative potential of PM in several countries throughout the entire Middle East region that are impacted by dust events in the Sahara and Arabian deserts.
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Affiliation(s)
- Christopher Lovett
- Department of Civil and Environmental Engineering, University of Southern California, 3620 South Vermont Avenue, Los Angeles, California, 90089, USA
| | - Mohammad H. Sowlat
- Department of Civil and Environmental Engineering, University of Southern California, 3620 South Vermont Avenue, Los Angeles, California, 90089, USA
| | - Najat A. Saliba
- Department of Chemistry, American University of Beirut, P.O. Box 11-0236, Riad El Solh, Beirut, 1107 2020, Lebanon
| | - Alan L. Shihadeh
- Department of Chemistry, American University of Beirut, P.O. Box 11-0236, Riad El Solh, Beirut, 1107 2020, Lebanon
- Dean of the Maroun Semaan Faculty of Engineering Department of Mechanical Engineering, American University of Beirut, P.O. Box 11-0236, Riad El Solh, Beirut, 1107 2020, Lebanon
| | - Constantinos Sioutas
- Department of Civil and Environmental Engineering, University of Southern California, 3620 South Vermont Avenue, Los Angeles, California, 90089, USA
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Lovett C, Baasiri M, Atwi K, Sowlat MH, Shirmohammadi F, Shihadeh AL, Sioutas C. Comparison of the oxidative potential of primary (POA) and secondary (SOA) organic aerosols derived from α-pinene and gasoline engine exhaust precursors. F1000Res 2018; 7:1031. [PMID: 30828421 PMCID: PMC6392154 DOI: 10.12688/f1000research.15445.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/08/2019] [Indexed: 12/02/2022] Open
Abstract
Background: Primary (POA) and secondary (SOA) organic aerosols, deriving from both anthropogenic and biogenic sources, represent a major fraction of ambient particulate matter (PM) and play an important role in the etiology of respiratory and cardiovascular diseases, largely through systemic inflammation and cellular oxidative stress. The relative contributions of these species to the inhalation burden, however, are rather poorly characterized. In this study, we measured the in vitro oxidative stress response of alveolar macrophages exposed to primary and secondary PM derived from both anthropogenic and biogenic sources. Methods: POA and SOA were generated within an oxidation flow reactor (OFR) fed by pure, aerosolized α-pinene or gasoline engine exhaust, as representative emissions of biogenic and anthropogenic sources, respectively. The OFR utilized an ultraviolet (UV) lamp to achieve an equivalent atmospheric aging process of several days. Results: Anthropogenic SOA produced the greatest oxidative response (1900 ± 255 µg-Zymosan/mg-PM), followed by biogenic (α-pinene) SOA (1321 ± 542 µg-Zymosan/mg-PM), while anthropogenic POA produced the smallest response (51.4 ± 64.3 µg-Zymosan/mg-PM). Conclusions: These findings emphasize the importance of monitoring and controlling anthropogenic emissions in the urban atmosphere, while also taking into consideration spatial and seasonal differences in SOA composition. Local concentrations of biogenic and anthropogenic species contributing to the oxidative potential of ambient PM may vary widely, depending on the given region and time of year, due to factors such as surrounding vegetation, proximity to urban areas, and hours of daylight.
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Affiliation(s)
- Christopher Lovett
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Mohamad Baasiri
- Department of Mechanical Engineering, American University of Beirut, Riad El Solh, Beirut, 1107 2020, Lebanon
| | - Khairallah Atwi
- Department of Mechanical Engineering, American University of Beirut, Riad El Solh, Beirut, 1107 2020, Lebanon
| | - Mohammad H. Sowlat
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Farimah Shirmohammadi
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Alan L. Shihadeh
- Department of Mechanical Engineering, American University of Beirut, Riad El Solh, Beirut, 1107 2020, Lebanon
| | - Constantinos Sioutas
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
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Lovett C, Baasiri M, Atwi K, Sowlat MH, Shirmohammadi F, Shihadeh AL, Sioutas C. Comparison of the oxidative potential of primary (POA) and secondary (SOA) organic aerosols derived from α-pinene and gasoline engine exhaust precursors. F1000Res 2018; 7:1031. [PMID: 30828421 PMCID: PMC6392154 DOI: 10.12688/f1000research.15445.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/28/2018] [Indexed: 10/07/2023] Open
Abstract
Background: Primary (POA) and secondary (SOA) organic aerosols, deriving from both anthropogenic and biogenic sources, represent a major fraction of ambient particulate matter (PM) and play an important role in the etiology of respiratory and cardiovascular diseases, largely through systemic inflammation and cellular oxidative stress. The relative contributions of these species to the inhalation burden, however, are rather poorly characterized. In this study, we measured the in vitro oxidative stress response of alveolar macrophages exposed to primary and secondary PM derived from both anthropogenic and biogenic sources. Methods: POA and SOA were generated within an oxidation flow reactor (OFR) fed by pure, aerosolized α-pinene or gasoline engine exhaust, as representative emissions of biogenic and anthropogenic sources, respectively. The OFR utilized an ultraviolet (UV) lamp to achieve an equivalent atmospheric aging process of several days. Results: Anthropogenic SOA produced the greatest oxidative response (1900 ± 255 µg-Zymosan/mg-PM), followed by biogenic (α-pinene) SOA (1321 ± 542 µg-Zymosan/mg-PM), while anthropogenic POA produced the smallest response (51.4 ± 64.3 µg-Zymosan/mg-PM). Conclusions: These findings emphasize the importance of monitoring and controlling anthropogenic emissions in the urban atmosphere, while also taking into consideration spatial and seasonal differences in SOA composition. Local concentrations of biogenic and anthropogenic species contributing to the oxidative potential of ambient PM may vary widely, depending on the given region and time of year, due to factors such as surrounding vegetation, proximity to urban areas, and hours of daylight.
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Affiliation(s)
- Christopher Lovett
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Mohamad Baasiri
- Department of Mechanical Engineering, American University of Beirut, Riad El Solh, Beirut, 1107 2020, Lebanon
| | - Khairallah Atwi
- Department of Mechanical Engineering, American University of Beirut, Riad El Solh, Beirut, 1107 2020, Lebanon
| | - Mohammad H. Sowlat
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Farimah Shirmohammadi
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Alan L. Shihadeh
- Department of Mechanical Engineering, American University of Beirut, Riad El Solh, Beirut, 1107 2020, Lebanon
| | - Constantinos Sioutas
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
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Zhan Y, Johnson K, Norris C, Shafer MM, Bergin MH, Zhang Y, Zhang J, Schauer JJ. The influence of air cleaners on indoor particulate matter components and oxidative potential in residential households in Beijing. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 626:507-518. [PMID: 29396331 DOI: 10.1016/j.scitotenv.2018.01.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 01/01/2018] [Accepted: 01/04/2018] [Indexed: 06/07/2023]
Abstract
In many developing regions with poor air quality, the use of air filtration devices to clean indoor air is growing rapidly. In this study, we collected indoor, outdoor and personal exposure filter-based samples of fine particulate matter (PM2.5) with both properly operating, and sham air cleaners in six Beijing residences from July 24th to August 17th, 2016. Mass concentrations of PM2.5 and several health relevant components of PM2.5 including organic carbon, elemental carbon, sulfate, nitrate, ammonium, and 21 selected metals, were analyzed to evaluate the effectiveness of air cleaners. The effect of air purification on PM2.5 reactive oxygen species (ROS) activity, a metric of the oxidative potential of the aerosol, was also evaluated. The average indoor PM2.5 concentration during true filtration was 8.47μg/m3, compared to 49.0μg/m3 during sham filtration; thus, air cleaners can significantly reduce the indoor PM2.5 concentration to well below WHO guideline levels and significantly lower all major components of PM2.5. However, the utility of air cleaners in reducing overall personal exposure to PM2.5 and its components was marginal in this study: the average personal exposure PM2.5 concentration was 67.8 and 51.1μg/m3 during true and sham filtration respectively, and it is likely due to the activity patterns of the subjects. Short-term exposure contributions from environments with high PM2.5 concentrations, including exposure to traffic related emissions as well as uncharacterized indoor microenvironments, likely add substantially to the total PM2.5 exposure burden. The toxicity assay indicates that the air cleaners can also significantly reduce ROS activity in the indoor environment; however, this decrease did not translate to a reduction in personal exposure. Elemental carbon, lead, and arsenic were well-correlated with the ROS activity, thus adding to the knowledge base of drivers for ROS activity.
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Affiliation(s)
- Ying Zhan
- University of Wisconsin-Madison, Department of Civil and Environmental Engineering, Madison, WI, United States
| | - Karoline Johnson
- Duke University, Department of Civil and Environmental Engineering, Durham, NC, United States
| | - Christina Norris
- Duke University, Department of Civil and Environmental Engineering, Durham, NC, United States
| | - Martin M Shafer
- Wisconsin State Laboratory of Hygiene, Madison, WI, United States
| | - Mike H Bergin
- Duke University, Department of Civil and Environmental Engineering, Durham, NC, United States
| | - Yinping Zhang
- Tsinghua University, School of Architecture, Beijing, China
| | - Junfeng Zhang
- Duke University, Nicholas School, Environmental Science and Policy Division, Durham, NC, United States
| | - James J Schauer
- University of Wisconsin-Madison, Department of Civil and Environmental Engineering, Madison, WI, United States.
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Lovett C, Cacciottolo M, Shirmohammadi F, Haghani A, Morgan TE, Sioutas C, Finch CE. Diurnal variation in the proinflammatory activity of urban fine particulate matter (PM 2.5) by in vitro assays. F1000Res 2018; 7:596. [PMID: 30345019 PMCID: PMC6171724 DOI: 10.12688/f1000research.14836.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/04/2018] [Indexed: 12/20/2022] Open
Abstract
Background: Ambient particulate matter (PM) smaller than 2.5 µm in diameter (PM 2.5) undergoes diurnal changes in chemical composition due to photochemical oxidation. In this study we examine the relationships between oxidative activity and inflammatory responses associated with these diurnal chemical changes. Because secondary PM contains a higher fraction of oxidized PM species, we hypothesized that PM 2.5 collected during afternoon hours would induce a greater inflammatory response than primary, morning PM 2.5. Methods: Time-integrated aqueous slurry samples of ambient PM 2.5 were collected using a direct aerosol-into-liquid collection system during defined morning and afternoon time periods. PM 2.5 samples were collected for 5 weeks in the late summer (August-September) of 2016 at a central Los Angeles site. Morning samples, largely consisting of fresh primary traffic emissions (primary PM), were collected from 6-9am (am-PM 2.5), and afternoon samples were collected from 12-4pm (pm-PM 2.5), when PM composition is dominated by products of photochemical oxidation (secondary PM). The two diurnally phased PM 2.5 slurries (am- and pm-PM 2.5) were characterized for chemical composition and BV-2 microglia were assayed in vitro for oxidative and inflammatory gene responses. Results: Contrary to expectations, the am-PM 2.5 slurry had more proinflammatory activity than the pm-PM 2.5 slurry as revealed by nitric oxide (NO) induction, as well as the upregulation of proinflammatory cytokines IL-1β, IL-6, and CCL2 (MCP-1), as assessed by messenger RNA production. Conclusions: The diurnal differences observed in this study may be in part attributed to the greater content of transition metals and water-insoluble organic carbon (WIOC) of am-PM 2.5 (primary PM) vs. pm-PM 2.5 (secondary PM), as these two classes of compounds can increase PM 2.5 toxicity.
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Affiliation(s)
- Christopher Lovett
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Mafalda Cacciottolo
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Farimah Shirmohammadi
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Amin Haghani
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Todd E. Morgan
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Constantinos Sioutas
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Caleb E. Finch
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
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Lovett C, Cacciottolo M, Shirmohammadi F, Haghani A, Morgan TE, Sioutas C, Finch CE. Diurnal variation in the proinflammatory activity of urban fine particulate matter (PM 2.5) by in vitro assays. F1000Res 2018; 7:596. [PMID: 30345019 PMCID: PMC6171724 DOI: 10.12688/f1000research.14836.3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/25/2018] [Indexed: 12/12/2022] Open
Abstract
Background: Ambient particulate matter (PM) smaller than 2.5 µm in diameter (PM 2.5) undergoes diurnal changes in chemical composition due to photochemical oxidation. In this study we examine the relationships between oxidative activity and inflammatory responses associated with these diurnal chemical changes. Because secondary PM contains a higher fraction of oxidized PM species, we hypothesized that PM 2.5 collected during afternoon hours would induce a greater inflammatory response than primary, morning PM 2.5. Methods: Time-integrated aqueous slurry samples of ambient PM 2.5 were collected using a direct aerosol-into-liquid collection system during defined morning and afternoon time periods. PM 2.5 samples were collected for 5 weeks in the late summer (August-September) of 2016 at a central Los Angeles site. Morning samples, largely consisting of fresh primary traffic emissions (primary PM), were collected from 6-9am (am-PM 2.5), and afternoon samples were collected from 12-4pm (pm-PM 2.5), when PM composition is dominated by products of photochemical oxidation (secondary PM). The two diurnally phased PM 2.5 slurries (am- and pm-PM 2.5) were characterized for chemical composition and BV-2 microglia were assayed in vitro for oxidative and inflammatory gene responses. Results: Contrary to expectations, the am-PM 2.5 slurry had more proinflammatory activity than the pm-PM 2.5 slurry as revealed by nitric oxide (NO) induction, as well as the upregulation of proinflammatory cytokines IL-1β, IL-6, and CCL2 (MCP-1), as assessed by messenger RNA production. Conclusions: The diurnal differences observed in this study may be in part attributed to the greater content of transition metals and water-insoluble organic carbon (WIOC) of am-PM 2.5 (primary PM) vs. pm-PM 2.5 (secondary PM), as these two classes of compounds can increase PM 2.5 toxicity.
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Affiliation(s)
- Christopher Lovett
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Mafalda Cacciottolo
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Farimah Shirmohammadi
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Amin Haghani
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Todd E. Morgan
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Constantinos Sioutas
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Caleb E. Finch
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
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Lovett C, Cacciottolo M, Shirmohammadi F, Haghani A, Morgan TE, Sioutas C, Finch CE. Diurnal variation in the proinflammatory activity of urban fine particulate matter (PM 2.5) by in vitro assays. F1000Res 2018; 7:596. [PMID: 30345019 PMCID: PMC6171724 DOI: 10.12688/f1000research.14836.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/10/2018] [Indexed: 09/29/2023] Open
Abstract
Background: Ambient particulate matter (PM) smaller than 2.5 µm in diameter (PM 2.5) undergoes diurnal changes in chemical composition due to photochemical oxidation. In this study we examine the relationships between oxidative activity and inflammatory responses associated with these diurnal chemical changes. Because secondary PM contains a higher fraction of oxidized PM species, we hypothesized that PM 2.5 collected during afternoon hours would induce a greater inflammatory response than primary, morning PM 2.5. Methods: Time-integrated aqueous slurry samples of ambient PM 2.5 were collected using a direct aerosol-into-liquid collection system during defined morning and afternoon time periods. PM 2.5 samples were collected for 5 weeks in the late summer (August-September) of 2016 at a central Los Angeles site. Morning samples, largely consisting of fresh primary traffic emissions (primary PM), were collected from 6-9am (am-PM 2.5), and afternoon samples were collected from 12-4pm (pm-PM 2.5), when PM composition is dominated by products of photochemical oxidation (secondary PM). The two diurnally phased PM 2.5 slurries (am- and pm-PM 2.5) were characterized for chemical composition and BV-2 microglia were assayed in vitro for oxidative and inflammatory gene responses. Results: Contrary to expectations, the am-PM 2.5 slurry had more proinflammatory activity than the pm-PM 2.5 slurry as revealed by nitric oxide (NO) induction, as well as the upregulation of proinflammatory cytokines IL-1β, IL-6, and CCL2 (MCP-1), as assessed by messenger RNA production. Conclusions: The diurnal differences observed in this study may be in part attributed to the greater content of transition metals and water-insoluble organic carbon (WIOC) of am-PM 2.5 (primary PM) vs. pm-PM 2.5 (secondary PM), as these two classes of compounds can increase PM 2.5 toxicity.
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Affiliation(s)
- Christopher Lovett
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Mafalda Cacciottolo
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Farimah Shirmohammadi
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Amin Haghani
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Todd E. Morgan
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Constantinos Sioutas
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
| | - Caleb E. Finch
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
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129
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Kang J, Duan J, Song J, Luo C, Liu H, Li B, Yang X, Yu W, Chen M. Exposure to a combination of formaldehyde and DINP aggravated asthma-like pathology through oxidative stress and NF-κB activation. Toxicology 2018; 404-405:49-58. [PMID: 29758289 DOI: 10.1016/j.tox.2018.05.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/05/2018] [Accepted: 05/10/2018] [Indexed: 01/20/2023]
Abstract
Several epidemiological and experimental studies indicate a positive association between exposure to formaldehyde or phthalates and allergic asthma. However, nothing is yet known about the effects of exposure to formaldehyde and phthalates together, nor the role of each on allergic asthma. Here, we investigated the effects of a combined exposure to formaldehyde and diisononyl phthalate (DINP) on asthma-like pathology in mice, and determined the underlying mechanisms implicated in NF-κB and ROS. Mice were exposed to formaldehyde and/or DINP and sensitization with OVA. The results showed that exposure to 1.0 mg/m3 formaldehyde or 20 mg/kg·d DINP slightly aggravated the airway wall remodeling, promoted the production of IgE and IgG1, and induced the occurrence of airway hyperresponsiveness (AHR). However, these pathological responses and AHR were greatly exacerbated by the combined exposure to formaldehyde and DINP. Administering melatonin to block oxidative stress, alleviated the pathological responses and AHR induced by formaldehyde and DINP, and inhibited the activation of the NF-κB and the secretion of TSLP. Blocking NF-κB with Dehydroxymethylepoxyquinimicin, inhibited the elevation of TSLP expression and Th2/Th17 cytokine secretion, and effectively alleviated the allergic asthma-like symptoms. The results suggested that exposure to both formaldehyde and DINP aggravated hypersensitivity asthma symptoms by promoting oxidative stress and activating NF-κB. These findings expand our understanding of how formaldehyde and DINP exposure affect the development of allergic asthma.
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Affiliation(s)
- Jun Kang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Jiufei Duan
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Jing Song
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Chen Luo
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Hong Liu
- Joint International Lab of Green Buildings and Built Environments, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Baizhan Li
- Joint International Lab of Green Buildings and Built Environments, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Xu Yang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Wei Yu
- Joint International Lab of Green Buildings and Built Environments, Ministry of Education, Chongqing University, Chongqing, 400045, China.
| | - Mingqing Chen
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China.
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Hong E, Lee S, Kim GB, Kim TJ, Kim HW, Lee K, Son BS. Effects of Environmental Air Pollution on Pulmonary Function Level of Residents in Korean Industrial Complexes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15050834. [PMID: 29695054 PMCID: PMC5981873 DOI: 10.3390/ijerph15050834] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/11/2018] [Accepted: 04/21/2018] [Indexed: 12/28/2022]
Abstract
This study aims to identify environmental air pollution adversely affecting pulmonary function among a community-based general population living in Korean industrial complexes. A total of 1963 residents participated in a pulmonary function test (PFT). The sample population consisted of an exposed group (n = 1487) living within a radius of 5 km of industrial complexes and a control group (n = 476) living over a radius of 10 km from the industrial complexes in Gwangyang and Yeosu cities. PFT results were calculated for each resident of the study population. On-site questionnaire surveys with face-to-face interviews were also conducted to collect more detailed information on personal lifestyles, medical history, exposure to air pollution, and respiratory disease and related symptoms. A total of 486 measured samples were collected by eight automated air-monitoring stations installed in four counties of Gwangyang and four counties of Yeosu in South Korea from January 2006 to February 2007. Mean levels of SO2 (0.012 ppm), CO (0.648 ppm), NO2 (0.02 ppm), O3 (0.034 ppm), and PM10 (43.07 μg/m3), collected within a radius of 5 km, were significantly higher than those collected over a radius of 10 km from Gwangyang and Yeosu industrial complexes. Prevalence odds ratio (OR) of abnormal pulmonary function in the exposed group of residents (<5 km) was elevated at 1.24 (95% CI 0.71–1.96), but not statistically significant (p > 0.05). In multiple linear regression analysis, forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) levels significantly declined as SO2, CO, and O3 levels increased when adjusting for age, sex, body mass index (BMI), alcohol, smoking, secondhand smoke, and respiratory disease and related symptoms (n = 1963) (p < 0.05). These results suggest that exposure to air pollution affects pulmonary function levels of residents living in Korean industrial complexes.
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Affiliation(s)
- Eunju Hong
- Department of Environmental Health Science, College of Natural Science, Soonchunhyang University, 22 Soonchunhyang-ro, Asan City, Chungnam 31538, Korea.
| | - Seokwon Lee
- Samsung Health Research Institute, Samsung Electronics Co. Ltd., 1 Samsungjeonja-ro, Hwaseong City, Gyeonggi-do 18448, Korea.
| | - Geun-Bae Kim
- Environmental Health Research Division, National Institute of Environment Research, 42 Hwangyeong-ro, Incheon City 22689, Korea.
| | - Tae-Jong Kim
- World Vertex Corp., ACE bldg., 401m 179, Baumoe-ro, Seocho-gu, Seoul 06744, Korea.
| | - Hyoung-Wook Kim
- Department of Environmental Health Science, College of Natural Science, Soonchunhyang University, 22 Soonchunhyang-ro, Asan City, Chungnam 31538, Korea.
| | - Kyoungho Lee
- Samsung Health Research Institute, Samsung Electronics Co. Ltd., 1 Samsungjeonja-ro, Hwaseong City, Gyeonggi-do 18448, Korea.
| | - Bu-Soon Son
- Department of Environmental Health Science, College of Natural Science, Soonchunhyang University, 22 Soonchunhyang-ro, Asan City, Chungnam 31538, Korea.
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131
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Silver JD, Sutherland MF, Johnston FH, Lampugnani ER, McCarthy MA, Jacobs SJ, Pezza AB, Newbigin EJ. Seasonal asthma in Melbourne, Australia, and some observations on the occurrence of thunderstorm asthma and its predictability. PLoS One 2018; 13:e0194929. [PMID: 29649224 PMCID: PMC5896915 DOI: 10.1371/journal.pone.0194929] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 03/13/2018] [Indexed: 12/11/2022] Open
Abstract
We examine the seasonality of asthma-related hospital admissions in Melbourne, Australia, in particular the contribution and predictability of episodic thunderstorm asthma. Using a time-series ecological approach based on asthma admissions to Melbourne metropolitan hospitals, we identified seasonal peaks in asthma admissions that were centred in late February, June and mid-November. These peaks were most likely due to the return to school, winter viral infections and seasonal allergies, respectively. We performed non-linear statistical regression to predict daily admission rates as functions of the seasonal cycle, weather conditions, reported thunderstorms, pollen counts and air quality. Important predictor variables were the seasonal cycle and mean relative humidity in the preceding two weeks, with higher humidity associated with higher asthma admissions. Although various attempts were made to model asthma admissions, none of the models explained substantially more variation above that associated with the annual cycle. We also identified a list of high asthma admissions days (HAADs). Most HAADs fell in the late-February return-to-school peak and the November allergy peak, with the latter containing the greatest number of daily admissions. Many HAADs in the spring allergy peak may represent episodes of thunderstorm asthma, as they were associated with rainfall, thunderstorms, high ambient grass pollen levels and high humidity, a finding that suggests thunderstorm asthma is a recurrent phenomenon in Melbourne that occurs roughly once per five years. The rarity of thunderstorm asthma events makes prediction challenging, underscoring the importance of maintaining high standards of asthma management, both for patients and health professionals, especially during late spring and early summer.
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Affiliation(s)
- Jeremy D. Silver
- School of Earth Sciences, University of Melbourne, Parkville, Victoria, Australia
- * E-mail:
| | - Michael F. Sutherland
- Institute of Breathing and Sleep, Department of Medicine, University of Melbourne, Parkville, Victoria, Australia
- Austin Health, Heidelberg, Victoria, Australia
| | - Fay H. Johnston
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Edwin R. Lampugnani
- School of BioSciences, University of Melbourne, Parkville, Victoria, Australia
| | - Michael A. McCarthy
- School of BioSciences, University of Melbourne, Parkville, Victoria, Australia
| | - Stephanie J. Jacobs
- School of Earth, Atmosphere & Environment, Monash University, Clayton, Victoria, Australia
| | - Alexandre B. Pezza
- Greater Wellington Regional Council, Pipitea, Wellington, New Zealand
- School of Geography, Environment and Earth Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Edward J. Newbigin
- School of BioSciences, University of Melbourne, Parkville, Victoria, Australia
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132
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Whiley H, Gaskin S, Schroder T, Ross K. Antifungal properties of essential oils for improvement of indoor air quality: a review. REVIEWS ON ENVIRONMENTAL HEALTH 2018; 33:63-76. [PMID: 29077554 DOI: 10.1515/reveh-2017-0023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/04/2017] [Indexed: 06/07/2023]
Abstract
Concerns regarding indoor air quality, particularly the presence of fungi and moulds, are increasing. The potential for essential oils to reduce, control or remove fungi, is gaining interest as they are seen as a "natural" alternative to synthetic chemical fungicides. This review examines published research on essential oils as a method of fungal control in indoor environments. It was difficult to compare the relative performances of essential oils due to differences in research methods and reporting languages. In addition, there are limited studies that scale up laboratory results and assess the efficacy of essential oils within building environments. However, generally, there appears to be some evidence to support the essential oils clove oil, tea tree oil, oregano, thyme and lemon as potential antifungal agents. Essential oils from heartwood, marjoram, cinnamon, lemon basil, caraway, bay tree, fir, peppermint, pine, cedar leaf and manuka were identified in at least one study as having antifungal potential. Future studies should focus on comparing the effectiveness of these essential oils against a large number of fungal isolates from indoor environments. Studies will then need to focus on translating these results into realistic application methods, in actual buildings, and assess the potential for long-term antifungal persistence.
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Affiliation(s)
- Harriet Whiley
- Environmental Health, Science and Engineering, Flinders University, GPO Box 2100, Adelaide 5000, Australia
| | - Sharyn Gaskin
- Occupational and Environmental Health, School of Public Health, The University of Adelaide, 28 Anderson St Thebarton, Adelaide 5031, Australia
| | - Tiffany Schroder
- Environmental Health, Science and Engineering, Flinders University, GPO Box 2100, Adelaide 5000, Australia
| | - Kirstin Ross
- Environmental Health, Science and Engineering, Flinders University, GPO Box 2100, Adelaide 5000, Australia
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133
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Knobelspies S, Bierer B, Daus A, Takabayashi A, Salvatore GA, Cantarella G, Ortiz Perez A, Wöllenstein J, Palzer S, Tröster G. Photo-Induced Room-Temperature Gas Sensing with a-IGZO Based Thin-Film Transistors Fabricated on Flexible Plastic Foil. SENSORS 2018; 18:s18020358. [PMID: 29373524 PMCID: PMC5855925 DOI: 10.3390/s18020358] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 01/19/2018] [Accepted: 01/23/2018] [Indexed: 11/16/2022]
Abstract
We present a gas sensitive thin-film transistor (TFT) based on an amorphous Indium-Gallium-Zinc-Oxide (a-IGZO) semiconductor as the sensing layer, which is fabricated on a free-standing flexible polyimide foil. The photo-induced sensor response to NO₂ gas at room temperature and the cross-sensitivity to humidity are investigated. We combine the advantages of a transistor based sensor with flexible electronics technology to demonstrate the first flexible a-IGZO based gas sensitive TFT. Since flexible plastic substrates prohibit the use of high operating temperatures, the charge generation is promoted with the help of UV-light absorption, which ultimately triggers the reversible chemical reaction with the trace gas. Furthermore, the device fabrication process flow can be directly implemented in standard TFT technology, allowing for the parallel integration of the sensor and analog or logical circuits.
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Affiliation(s)
- Stefan Knobelspies
- Electronics Laboratory, Swiss Federal Institute of Technology (ETH) Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland.
| | - Benedikt Bierer
- Laboratory for Gas Sensors, Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany.
| | - Alwin Daus
- Electronics Laboratory, Swiss Federal Institute of Technology (ETH) Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland.
| | - Alain Takabayashi
- Electronics Laboratory, Swiss Federal Institute of Technology (ETH) Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland.
| | - Giovanni Antonio Salvatore
- Electronics Laboratory, Swiss Federal Institute of Technology (ETH) Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland.
| | - Giuseppe Cantarella
- Electronics Laboratory, Swiss Federal Institute of Technology (ETH) Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland.
| | - Alvaro Ortiz Perez
- Laboratory for Gas Sensors, Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany.
| | - Jürgen Wöllenstein
- Laboratory for Gas Sensors, Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany.
- Fraunhofer Institute for Physical Measurement Techniques, Freiburg, Germany.
| | - Stefan Palzer
- Department of Computer Science, Universidad Autónoma de Madrid, Francisco Tomás y Valiente 11, 28049 Madrid, Spain.
| | - Gerhard Tröster
- Electronics Laboratory, Swiss Federal Institute of Technology (ETH) Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland.
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134
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Proteomic Analysis and Identification of Possible Allergenic Proteins in Mature Pollen of Populus tomentosa. Int J Mol Sci 2018; 19:ijms19010250. [PMID: 29337913 PMCID: PMC5796197 DOI: 10.3390/ijms19010250] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 12/27/2017] [Accepted: 01/09/2018] [Indexed: 01/14/2023] Open
Abstract
Pollen grains from Populus tomentosa, a widely cultivated tree in northern area of China, are considered to be an important aeroallergen causing severe allergic diseases. To gain insight into their allergenic components, mature Populus tomentosa pollen proteins were analyzed by two-dimensional gel electrophoresis (2-DE) and matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF/TOF MS). A total of 412 spots from mature pollen were resolved on pH 4-7 immobilized pH gradient (IPG) strips and 159 distinct proteins were identified from 242 spots analyzed. The identified proteins were categorized based on their functional role in the pollen, which included proteins involved in energy regulation, protein fate, protein synthesis and processing, metabolism, defense/stress responses, development and other functional categories. Moreover, among the identified proteins, 27 proteins were identified as putative allergens using the Structural Database of Allergenic Proteins (SDAP) tool and Allergen Online. The expression patterns of these putative allergen genes indicate that several of these genes are highly expressed in pollen. The identified putative allergens have the potential to improve specific diagnosis and can be used to develop vaccines for immunotherapy against poplar pollen allergy.
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135
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Yu QL, Chen Z. Establishment of different experimental asthma models in mice. Exp Ther Med 2018; 15:2492-2498. [PMID: 29456654 PMCID: PMC5795809 DOI: 10.3892/etm.2018.5721] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 01/04/2018] [Indexed: 01/01/2023] Open
Abstract
Asthma is a complex disease. The heterogeneity of airway inflammation during asthma indicates there are different mechanisms involved. In order to further study the mechanisms of asthma, different mouse models were established to mimic corresponding subtypes of asthma in clinic. Eosinophilic asthma was established by intraperitoneal injections of ovalbumin (OVA) on day 0 and day 7, followed by inhalation of aerosolized OVA on days 14–17. Neutrophilic asthma was established by transtracheal administration of a high dose of lipopolysaccharide (LPS; 10 µg) on days 15 and 17 in combination with OVA sensitization and challenge as described previously. Mix-granulocytic asthma was established by transtracheal administration of a low dose of LPS (1 µg) on day 15, in combination with OVA sensitization and challenge as described previously. Compared with healthy controls, increased numbers of eosinophils, elevated levels of T helper (Th)2 cytokines in bronchoalveolar lavage fluid (BALF), and moderated inflammation of lung tissues was observed in eosinophilic asthma. Increased numbers of neutrophils, elevated levels of Th1 and Th17 cytokines in BALF and severe inflammation of lung tissues was observed in neutrophilic asthma. Increased numbers of both eosinophils and neutrophils, elevated levels of Th1, Th2 and Th17 cytokines in BALF and severe inflammation of lung tissues was observed in mix-granulocytic asthma. Airway hyperresponsiveness, increased bronchial mucus secretion, and elevated serum levels of immunoglobin (Ig)E and OVA-IgE were detected in all three asthma models. Dexamethasone reduced the pathogenic symptoms of the mice in eosinophilic asthma, however had no effect on neutrophilic asthma or mix-granulocytic asthma. Each model of asthma established in the present study represents corresponding subtypes of asthma in clinic.
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Affiliation(s)
- Qian-Lin Yu
- School of Life Science and Technology, Shanghai Tech University, Shanghai 201210, P.R. China
| | - Zhangbo Chen
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
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136
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Li A, Fan L, Xie L, Ren Y, Li L. Associations between air pollution, climate factors and outpatient visits for eczema in West China Hospital, Chengdu, south-western China: a time series analysis. J Eur Acad Dermatol Venereol 2017; 32:486-494. [PMID: 29194790 DOI: 10.1111/jdv.14730] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 11/15/2017] [Indexed: 02/05/2023]
Affiliation(s)
- A. Li
- Department of Dermatology; West China School of Medicine; Sichuan University; Chengdu Sichuan China
| | - L. Fan
- Department of Dermatology; West China School of Medicine; Sichuan University; Chengdu Sichuan China
| | - L. Xie
- Department of Dermatology; West China School of Medicine; Sichuan University; Chengdu Sichuan China
| | - Y. Ren
- Department of Medical Statistics; West China School of Public Health; Sichuan University; Chengdu Sichuan China
| | - L. Li
- Department of Dermatology; West China Hospital; Sichuan University; Chengdu Sichuan China
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137
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Vasiliou AK, Hu H, Cowell TW, Whitman JC, Porterfield J, Parish CA. Modeling Oil Shale Pyrolysis: High-Temperature Unimolecular Decomposition Pathways for Thiophene. J Phys Chem A 2017; 121:7655-7666. [DOI: 10.1021/acs.jpca.7b07582] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- AnGayle K. Vasiliou
- Department
of Chemistry and Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Hui Hu
- Department
of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia 23713, United States
| | - Thomas W. Cowell
- Department
of Chemistry and Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Jared C. Whitman
- Department
of Chemistry and Biochemistry, Middlebury College, Middlebury, Vermont 05753, United States
| | - Jessica Porterfield
- Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, United States
| | - Carol A. Parish
- Department
of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia 23713, United States
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138
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Maruotti A, Bulla J, Lagona F, Picone M, Martella F. Dynamic mixtures of factor analyzers to characterize multivariate air pollutant exposures. Ann Appl Stat 2017. [DOI: 10.1214/17-aoas1049] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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139
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Ye Z, Duan C, Sheng R, Xu J, Wang H, Zeng L. A novel colorimetric and ratiometric fluorescent probe for visualizing SO 2 derivatives in environment and living cells. Talanta 2017; 176:389-396. [PMID: 28917766 DOI: 10.1016/j.talanta.2017.08.054] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/09/2017] [Accepted: 08/15/2017] [Indexed: 11/17/2022]
Abstract
Monitoring sulfur dioxide (SO2) derivatives in environment is of great significance due to their harmful effects to the environment and human health. In this study, a fluorescent probe (CZBT) for SO2 derivatives was prepared from 9-ethyl-9H-carbazole-3,6-dicarboxaldehyde and 2-methyl-benzothiazolium, which displayed a noticeable color change from yellow to colorless along with a remarkable fluorescence change from yellow to blue in response to HSO3-. The probe could quantitatively determine the concentration of HSO3- with excellent selectivity, high sensitivity and low limit of detection. 1H NMR and HR-MS spectra demonstrated that a selective 1, 4-nucleophilic addition occurred on the bridge double bond in CZBT. The probe was successfully used to determine the SO2 derivatives in several real water samples with good recovery. Furthermore, the probe was employed for monitoring the level of intracellular HSO3- in HeLa (human cervical cancer) cells by fluorescence imaging. These results indicated that CZBT has a good capability for monitoring SO2 derivatives in environment and living cells.
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Affiliation(s)
- Zhuo Ye
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
| | - Chong Duan
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
| | - Ruilong Sheng
- Department of Chemistry, Université de Montréal, Succursale Centre-ville, Montreal, Quebec H3C3J7, Canada
| | - Junchao Xu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
| | - Hongying Wang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China.
| | - Lintao Zeng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China.
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140
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Morakinyo OM, Mokgobu MI, Mukhola MS, Engelbrecht JC. Health risk assessment of exposure to ambient concentrations of benzene, toluene and xylene in Pretoria West, South Africa. AFRICAN JOURNAL OF SCIENCE, TECHNOLOGY, INNOVATION AND DEVELOPMENT 2017. [DOI: 10.1080/20421338.2017.1352123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Oyewale Mayowa Morakinyo
- Department of Environmental Health, Faculty of Science, Tshwane University of Technology, South Africa
| | - Matlou Ingrid Mokgobu
- Department of Environmental Health, Faculty of Science, Tshwane University of Technology, South Africa
| | - Murembiwa Stanley Mukhola
- Department of Environmental Health, Faculty of Science, Tshwane University of Technology, South Africa
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141
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Liao HT, Yau YC, Huang CS, Chen N, Chow JC, Watson JG, Tsai SW, Chou CCK, Wu CF. Source apportionment of urban air pollutants using constrained receptor models with a priori profile information. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 227:323-333. [PMID: 28478370 DOI: 10.1016/j.envpol.2017.04.071] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 04/14/2017] [Accepted: 04/25/2017] [Indexed: 05/27/2023]
Abstract
Exposure to air pollutants such as volatile organic compounds (VOCs) and fine particulate matter (PM2.5) are associated with adverse health effects. This study applied multiple time resolution data of hourly VOCs and 24-h PM2.5 to a constrained Positive Matrix Factorization (PMF) model for source apportionment in Taipei, Taiwan. Ninety-two daily PM2.5 samples and 2208 hourly VOC measurements were collected during four seasons in 2014 and 2015. With some a priori information, we used different procedures to constrain retrieved factors toward realistic sources. A total of nine source factors were identified as: natural gas/liquefied petroleum gas (LPG) leakage, solvent use/industrial process, contaminated marine aerosol, secondary aerosol/long-range transport, oil combustion, traffic related, evaporative gasoline emission, gasoline exhaust, and soil dust. Results showed that solvent use/industrial process was the largest contributor (19%) to VOCs while the largest contributor to PM2.5 mass was secondary aerosol/long-range transport (57%). A robust regression analysis showed that secondary aerosol was mostly contributed by regional transport related factor (25%).
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Affiliation(s)
- Ho-Tang Liao
- Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University, Taipei, Taiwan
| | - Yu-Chen Yau
- Institute of Environmental Health, National Taiwan University, Taipei, Taiwan
| | - Chun-Sheng Huang
- Institute of Environmental Health, National Taiwan University, Taipei, Taiwan
| | - Nathan Chen
- Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University, Taipei, Taiwan
| | - Judith C Chow
- Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, USA
| | - John G Watson
- Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, USA
| | - Shih-Wei Tsai
- Institute of Environmental Health, National Taiwan University, Taipei, Taiwan
| | - Charles C-K Chou
- Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan.
| | - Chang-Fu Wu
- Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University, Taipei, Taiwan; Institute of Environmental Health, National Taiwan University, Taipei, Taiwan; Department of Public Health, National Taiwan University, Taipei, Taiwan.
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142
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Morphology, composition, and mixing state of primary particles from combustion sources - crop residue, wood, and solid waste. Sci Rep 2017; 7:5047. [PMID: 28698671 PMCID: PMC5505958 DOI: 10.1038/s41598-017-05357-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 05/26/2017] [Indexed: 11/08/2022] Open
Abstract
Morphology, composition, and mixing state of individual particles emitted from crop residue, wood, and solid waste combustion in a residential stove were analyzed using transmission electron microscopy (TEM). Our study showed that particles from crop residue and apple wood combustion were mainly organic matter (OM) in smoldering phase, whereas soot-OM internally mixed with K in flaming phase. Wild grass combustion in flaming phase released some Cl-rich-OM/soot particles and cardboard combustion released OM and S-rich particles. Interestingly, particles from hardwood (pear wood and bamboo) and softwood (cypress and pine wood) combustion were mainly soot and OM in the flaming phase, respectively. The combustion of foam boxes, rubber tires, and plastic bottles/bags in the flaming phase released large amounts of soot internally mixed with a small amount of OM, whereas the combustion of printed circuit boards and copper-core cables emitted large amounts of OM with Br-rich inclusions. In addition, the printed circuit board combustion released toxic metals containing Pb, Zn, Sn, and Sb. The results are important to document properties of primary particles from combustion sources, which can be used to trace the sources of ambient particles and to know their potential impacts in human health and radiative forcing in the air.
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143
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Functional hybrid nanostructure materials: Advanced strategies for sensing applications toward volatile organic compounds. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.04.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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144
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Lee LK, Obi E, Paknis B, Kavati A, Chipps B. Asthma control and disease burden in patients with asthma and allergic comorbidities. J Asthma 2017; 55:208-219. [PMID: 28586296 DOI: 10.1080/02770903.2017.1316394] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To assess asthma control and associations with health-related quality of life (HRQoL) and economic outcomes among patients with asthma and allergic comorbidities treated with inhaled corticosteroids (ICS) and long-acting beta-agonists (LABA) combination therapy. METHODS Data from the 2011-2013 US National Health and Wellness Survey were used to identify patients with asthma currently treated with ICS and LABA combination therapy (N = 1923). Patients were included if they self-reported a physician diagnosis of asthma and at least one allergic/asthma-related comorbid condition (e.g., nasal allergies, atopic dermatitis). Asthma Control Test scores categorized patients as very poorly (scores ≤ 15; 29.3%), not well (16-19; 25.1%), or well controlled (20-25; 45.7%). Outcomes included HRQoL (SF-36v2; SF-12v2), work productivity and activity impairment, healthcare utilization (HRU), and annual indirect and direct costs. Generalized linear models, controlling for covariates, examined whether outcomes differed by asthma control. RESULTS Over half of the patients had very poorly or not well-controlled asthma (54.4%). Patients with very poorly controlled versus well-controlled asthma reported significantly greater decreases in HRQoL, greater overall work impairment, and higher HRU (all, p < 0.05). Very poorly controlled patients incurred over double the indirect costs and nearly one and a half times the direct and total costs of well-controlled patients. CONCLUSIONS Increasing level of asthma control was related to improved HRQoL and lower costs. The considerably high prevalence of uncontrolled asthma among patients on ICS and LABA suggests poor treatment adherence or unmet needs in current treatment and may require step-up therapy in appropriate patients according to clinical guidelines.
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Affiliation(s)
- Lulu K Lee
- a Health Outcomes Research, Kantar Health , Foster City , CA , USA
| | - Engels Obi
- b US Health Economics and Outcomes Research, Novartis Pharmaceuticals Corp. , East Hanover , NJ , USA
| | - Brandee Paknis
- d Allergy and Respiratory Disease, Capital Allergy & Respiratory Disease Center , Sacramento , CA , USA
| | - Abhishek Kavati
- b US Health Economics and Outcomes Research, Novartis Pharmaceuticals Corp. , East Hanover , NJ , USA
| | - Bradley Chipps
- c US Medical Affairs, Novartis Pharmaceuticals Corp., East Hanover , NJ , USA
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145
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Wang T, Chen S, Wang H, Liu Z, Wu Z. In-plasma catalytic degradation of toluene over different MnO 2 polymorphs and study of reaction mechanism. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62808-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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146
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Schultz AA, Schauer JJ, Malecki KM. Allergic disease associations with regional and localized estimates of air pollution. ENVIRONMENTAL RESEARCH 2017; 155:77-85. [PMID: 28193558 PMCID: PMC6230689 DOI: 10.1016/j.envres.2017.01.039] [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: 10/27/2016] [Revised: 01/18/2017] [Accepted: 01/31/2017] [Indexed: 05/30/2023]
Abstract
BACKGROUND Exposure to multiple types of air pollution may contribute to and exacerbate allergic diseases including asthma and wheezing. However, few studies have examined chronic air pollution exposure and allergic disease outcomes among an adult population. Associations between potential estimates of annual average fine particulate matter (PM2.5), traffic related air pollution, and industrial source air emissions and three allergic disease outcomes (asthma, allergies and wheezing) were examined in a state-wide general population of adults. METHODS The study includes a representative sample of 3381 adult Wisconsin residents who participated in the 2008-2013 Survey of the Health of Wisconsin (SHOW) program. Participant data were geographically linked to The United States Environmental Protection Agency (USEPA) Baysian space-time downscaler air pollution model for PM2.5, the United States Census roadway, and USEPA's Toxic Release Inventory data. Self-report and lung function (FEV1) estimates were used to define prevalence of asthma, allergies and wheezing symptoms. RESULTS Annual mean exposure to fine particulate matter (PM2.5) was between 6.59 and 15.14μg/m3. An increase of 5μg/m3 in the annual mean PM2.5 resulted in a 3.58 (2.36, 5.43) increase in the adjusted odds (95% CI) of having asthma. Exposure to vehicle traffic increased the odds of both current allergies [OR (95% CI)=1.35 (1.07, 1.35)] and current asthma [OR (95% CI)=1.51 (1.14, 2.00)]. Living within 300m of an Interstate roadway was associated with a 3-fold increase in the odds of asthma. Those living within 800m of an industrial site were 47% more likely to have asthma. No significant associations were seen with wheezing. CONCLUSIONS Within this population exposed to overall annual average levels of estimated low level chronic exposure to fine particulate matter (PM2.5) at or near 12μg/m3, the USEPA standard for air quality, significant association between both modeled PM2.5 exposure and proximity to roadways with asthma and allergies but not wheezing were found. Industrial source emissions were not associated with any allergic disease outcomes.
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Affiliation(s)
- Amy A Schultz
- Department of Population Health Sciences, University of Wisconsin, Madison, Wisconsin, USA
| | - Jamie J Schauer
- Department of Civil and Environmental Engineering, University of Wisconsin, Madison, Wisconsin, USA
| | - Kristen Mc Malecki
- Department of Population Health Sciences, University of Wisconsin, Madison, Wisconsin, USA.
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147
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Reinmuth-Selzle K, Kampf CJ, Lucas K, Lang-Yona N, Fröhlich-Nowoisky J, Shiraiwa M, Lakey PSJ, Lai S, Liu F, Kunert AT, Ziegler K, Shen F, Sgarbanti R, Weber B, Bellinghausen I, Saloga J, Weller MG, Duschl A, Schuppan D, Pöschl U. Air Pollution and Climate Change Effects on Allergies in the Anthropocene: Abundance, Interaction, and Modification of Allergens and Adjuvants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:4119-4141. [PMID: 28326768 PMCID: PMC5453620 DOI: 10.1021/acs.est.6b04908] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 03/07/2017] [Accepted: 03/22/2017] [Indexed: 05/13/2023]
Abstract
Air pollution and climate change are potential drivers for the increasing burden of allergic diseases. The molecular mechanisms by which air pollutants and climate parameters may influence allergic diseases, however, are complex and elusive. This article provides an overview of physical, chemical and biological interactions between air pollution, climate change, allergens, adjuvants and the immune system, addressing how these interactions may promote the development of allergies. We reviewed and synthesized key findings from atmospheric, climate, and biomedical research. The current state of knowledge, open questions, and future research perspectives are outlined and discussed. The Anthropocene, as the present era of globally pervasive anthropogenic influence on planet Earth and, thus, on the human environment, is characterized by a strong increase of carbon dioxide, ozone, nitrogen oxides, and combustion- or traffic-related particulate matter in the atmosphere. These environmental factors can enhance the abundance and induce chemical modifications of allergens, increase oxidative stress in the human body, and skew the immune system toward allergic reactions. In particular, air pollutants can act as adjuvants and alter the immunogenicity of allergenic proteins, while climate change affects the atmospheric abundance and human exposure to bioaerosols and aeroallergens. To fully understand and effectively mitigate the adverse effects of air pollution and climate change on allergic diseases, several challenges remain to be resolved. Among these are the identification and quantification of immunochemical reaction pathways involving allergens and adjuvants under relevant environmental and physiological conditions.
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Affiliation(s)
| | - Christopher J. Kampf
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
- Institute
of Inorganic and Analytical Chemistry, Johannes
Gutenberg University, Mainz, 55128, Germany
| | - Kurt Lucas
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Naama Lang-Yona
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | | | - Manabu Shiraiwa
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Pascale S. J. Lakey
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Senchao Lai
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
- South
China University of Technology, School of
Environment and Energy, Guangzhou, 510006, China
| | - Fobang Liu
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Anna T. Kunert
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Kira Ziegler
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Fangxia Shen
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Rossella Sgarbanti
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Bettina Weber
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Iris Bellinghausen
- Department
of Dermatology, University Medical Center, Johannes Gutenberg University, Mainz, 55131, Germany
| | - Joachim Saloga
- Department
of Dermatology, University Medical Center, Johannes Gutenberg University, Mainz, 55131, Germany
| | - Michael G. Weller
- Division
1.5 Protein Analysis, Federal Institute
for Materials Research and Testing (BAM), Berlin, 12489, Germany
| | - Albert Duschl
- Department
of Molecular Biology, University of Salzburg, 5020 Salzburg, Austria
| | - Detlef Schuppan
- Institute
of Translational Immunology and Research Center for Immunotherapy,
Institute of Translational Immunology, University Medical Center, Johannes Gutenberg University, Mainz, 55131 Germany
- Division
of Gastroenterology, Beth Israel Deaconess
Medical Center and Harvard Medical School, Boston, Massachusetts 02215, United States
| | - Ulrich Pöschl
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
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148
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Liu Q, Xu C, Ji G, Liu H, Shao W, Zhang C, Gu A, Zhao P. Effect of exposure to ambient PM 2.5 pollution on the risk of respiratory tract diseases: a meta-analysis of cohort studies. J Biomed Res 2017; 31:130-142. [PMID: 28808195 PMCID: PMC5445216 DOI: 10.7555/jbr.31.20160071] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The International Agency for Research on Cancer and the World Health Organization have designated airborne particulates, including particulates of median aerodynamic diameter ≤ 2.5 μm (PM2.5), as Group 1 carcinogens. It has not been determined, however, whether exposure to ambient PM2.5 is associated with an increase in respiratory related diseases. This meta-analysis assessed the association between exposure to ambient fine particulate matter (PM2.5) and the risk of respiratory tract diseases, using relevant articles extracted from PubMed, Web of Science, and Embase. In results, of the 1,126 articles originally identified, 35 (3.1%) were included in this meta-analysis. PM2.5 was found to be associated with respiratory tract diseases. After subdivision by age group, respiratory tract disease, and continent, PM2.5 was strongly associated with respiratory tract diseases in children, in persons with cough, lower respiratory illness, and wheezing, and in individuals from North America, Europe, and Asia. The risk of respiratory tract diseases was greater for exposure to traffic-related than non-traffic-related air pollution. In children, the pooled relative risk (RR) represented significant increases in wheezing (8.2%), cough (7.5%), and lower respiratory illness (15.3%). The pooled RRs in children were 1.091 (95%CI: 1.049, 1.135) for exposure to <25 μg/m3 PM2.5, and 1.126 (95%CI: 1.067, 1.190) for exposure to ≥ 25 μg/m3 PM2.5. In conclusion, exposure to ambient PM2.5 was significantly associated with the development of respiratory tract diseases, especially in children exposed to high concentrations of PM2.5.
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Affiliation(s)
- Qian Liu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Cheng Xu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Guixiang Ji
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, Jiangsu 210042, China
| | - Hui Liu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Wentao Shao
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Chunlan Zhang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Aihua Gu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Peng Zhao
- Department of Neurosurgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, China
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149
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Greenberg N, Carel RS, Derazne E, Tiktinsky A, Tzur D, Portnov BA. Modeling long-term effects attributed to nitrogen dioxide (NO 2) and sulfur dioxide (SO 2) exposure on asthma morbidity in a nationwide cohort in Israel. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2017; 80:326-337. [PMID: 28644724 DOI: 10.1080/15287394.2017.1313800] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Studies have provided extensive documentation that acutely elevated environmental exposures contribute to chronic health problems. However, only attention has been paid to the effects of modificate of exposure assessment methods in environmental health investigations, leading to uncertainty and gaps in our understanding of exposure- and dose-response relationships. The goal of the present study was to evaluate whether average or peak concentration exerts a greater influence on asthma outcome, and which of the exposure models may better explain various physiological responses generated by nitrogen dioxide (NO2) or sulfur dioxide (SO2) air pollutants. The effects of annual NO2 and SO2 exposures on asthma prevalence were determined in 137,040 17-year-old males in Israel, who underwent standard health examinations before induction to military service during 1999-2008. Three alternative models of cumulative exposure were used: arithmetic mean level (AM), average peak concentration (APC), and total number of air pollution exposure episodes (NEP). Air pollution data for NO2 and SO2 levels were linked to the residence of each subject and asthma prevalence was predicted using bivariate logistic regression. There was significant increased risk for asthma occurrence attributed to NO2 exposure in all models with the highest correlations demonstrated using the APC model. Data suggested that exposure-response is better correlated with NO2 peak concentration than with average exposure concentration in subjects with asthma. For SO2, there was a weaker but still significant exposure response association in all models. These differences may be related to differences in physiological responses including effects on different regions of the airways following exposure to these pollutants. NO2, which is poorly soluble in water, penetrates deep into the bronchial tree, producing asthmatic manifestations such as inflammation and increased mucus production as a result of high gaseous concentrations in the lung parenchyma. In contrast, SO2, which is highly water soluble, exerts its effects rapidly in the upper airways, leading to similar limited correlations at all levels of exposure with fewer asthmatic manifestations observed. These data indicate that differing exposure assessment methods may be needed to capture specific disease consequences associated with these air pollutants.
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Affiliation(s)
- N Greenberg
- a School of Public Health , University of Haifa , Haifa , Israel
- b Israeli Defense Forces (IDF), Medical Corps , Ramat Gan Israel
| | - R S Carel
- a School of Public Health , University of Haifa , Haifa , Israel
| | - E Derazne
- b Israeli Defense Forces (IDF), Medical Corps , Ramat Gan Israel
| | - A Tiktinsky
- b Israeli Defense Forces (IDF), Medical Corps , Ramat Gan Israel
| | - D Tzur
- b Israeli Defense Forces (IDF), Medical Corps , Ramat Gan Israel
| | - B A Portnov
- c Department of Natural Resources & Environment Management, Faculty of Management , University of Haifa , Haifa , Israel
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150
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Su X, Huang H, Hong W, Cui J, Yu M, Li Y. Alkyl radical triggered in situ SO2-capture cascades. Chem Commun (Camb) 2017; 53:13324-13327. [DOI: 10.1039/c7cc08362a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Born to be useful: an unprecedented in situ SO2-capture cascade triggered by alkyl radicals has been documented herein.
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Affiliation(s)
- Xiaolong Su
- Department of Chemistry, Fuzhou University
- Fuzhou
- China
| | - Honggui Huang
- Department of Chemistry, Fuzhou University
- Fuzhou
- China
| | - Wei Hong
- Department of Chemistry, Fuzhou University
- Fuzhou
- China
| | - Jianchao Cui
- Department of Chemistry, Fuzhou University
- Fuzhou
- China
| | - Menglin Yu
- Department of Chemistry, Fuzhou University
- Fuzhou
- China
| | - Yi Li
- Department of Chemistry, Fuzhou University
- Fuzhou
- China
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