Database : MEDLINE
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[PMID]: 29524921
[Au] Autor:Reis H; Reis C; Sharip A; Reis W; Zhao Y; Sinclair R; Beeson L
[Ad] Address:Loma Linda University School of Medicine, 11175 Campus Street, Loma Linda, CA 92350, USA.
[Ti] Title:Diesel exhaust exposure, its multi-system effects, and the effect of new technology diesel exhaust.
[So] Source:Environ Int;114:252-265, 2018 Mar 07.
[Is] ISSN:1873-6750
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Exposure to diesel exhaust (DE) from vehicles and industry is hazardous and affects proper function of organ systems. DE can interfere with normal physiology after acute and chronic exposure to particulate matter (PM). Exposure leads to potential systemic disease processes in the central nervous, visual, hematopoietic, respiratory, cardiovascular, and renal systems. In this review, we give an overview of the epidemiological evidence supporting the harmful effects of diesel exhaust, and the numerous animal studies conducted to investigate the specific pathophysiological mechanisms behind DE exposure. Additionally, this review includes a summary of studies that used biomarkers as an indication of biological plausibility, and also studies evaluating new technology diesel exhaust (NTDE) and its systemic effects. Lastly, this review includes new approaches to improving DE emissions, and emphasizes the importance of ongoing study in this field of environmental health.
[Pt] Publication type:JOURNAL ARTICLE; REVIEW
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29524919
[Au] Autor:Nawrot TS; Saenen ND; Schenk J; Janssen BG; Motta V; Tarantini L; Cox B; Lefebvre W; Vanpoucke C; Maggioni C; Bollati V
[Ad] Address:Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium; Department of Public Health & Primary Care, Leuven University, Leuven, Belgium. Electronic address: tim.nawrot@uhasselt.be.
[Ti] Title:Placental circadian pathway methylation and in utero exposure to fine particle air pollution.
[So] Source:Environ Int;114:231-241, 2018 Mar 07.
[Is] ISSN:1873-6750
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:In mammals, a central clock maintains the daily rhythm in accordance with the external environment. At the molecular level, the circadian rhythm is maintained by epigenetic regulation of the Circadian pathway. Here, we tested the role of particulate matter with an aerodynamic diameter ≤ 2.5 m (PM ) exposure during gestational life on human placental Circadian pathway methylation, as an important molecular target for healthy development. In 407 newborns, we quantified placental methylation of CpG sites within the promoter regions of the following genes: CLOCK, BMAL1, NPAS2, CRY1-2 and PER1-3 using bisulfite-PCR-pyrosequencing. Daily PM exposure levels were estimated for each mother's residence, using a spatiotemporal interpolation model. We applied mixed-effects models to study the methylation status of the Circadian pathway genes and in utero PM exposure, while adjusting for a priori chosen covariates. In a multi-gene model, placental Circadian pathway methylation was positively and significantly (p < 0.0001) associated with 3rd trimester PM exposure. Consequently, the single-gene models showed relative methylation differences [Log(fold change)] in placental NPAS2 (+0.16; p = 0.001), CRY1 (+0.59; p = 0.0023), PER2 (+0.36; p = 0.0005), and PER3 (+0.42; p = 0.0008) for an IQR increase (8.9 g/m ) in 3rd trimester PM exposure. PM air pollution, an environmental risk factor leading to a pro-inflammatory state of the mother and foetus, is associated with the methylation pattern of genes in the Circadian pathway. The observed alterations in the placental CLOCK epigenetic signature might form a relevant molecular mechanism through which fine particle air pollution exposure might affect placental processes and foetal development.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

  3 / 21846 MEDLINE  
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[PMID]: 29524906
[Au] Autor:Kastury F; Smith E; Karna RR; Scheckel KG; Juhasz AL
[Ad] Address:Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia. Electronic address: farzana.kastury@mymail.unisa.edu.au.
[Ti] Title:An inhalation-ingestion bioaccessibility assay (IIBA) for the assessment of exposure to metal(loid)s in PM .
[So] Source:Sci Total Environ;631-632:92-104, 2018 Mar 07.
[Is] ISSN:1879-1026
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Although metal(loid) bioaccessibility of ambient particulate matter, with an aerodynamic diameter of <10m (PM ), has recently received increasing attention, limited research exists into standardising in-vitro methodologies using simulated lung fluid (SLF). Contradictions exist regarding which assay parameters should be adopted. Additionally, potential continuation of metal(loid) dissolution once PM is cleared from the lungs and passed through the gastro-intestinal tract (GIT) has rarely been addressed. The objective of this study was to assess parameters that influence inhalation bioaccessibility in order to develop a conservative assay that is relevant to a human inhalation scenario. To achieve this aim, the effect of solid to liquid (S/L) ratio, extraction time, agitation and five major SLF compositions on the bioaccessibilities of arsenic (As) and lead (Pb) was investigated using PM from three Australian mining/smelting impacted regions. Using the biologically relevant parameters that resulted in the most conservative outcomes, bioaccessibility of metal(loid)s in PM was assessed in SLF, followed by simulated GIT solutions. Results from this study revealed that fluid composition and S/L ratio significantly affected metal(loid) dissolution (p<0.05). The highest Pb bioaccessibility resulted using simulated lung-gastric solution, while that of As resulted using simulated lung-gastric-small intestinal tract solutions. Compared to SLF alone, metal(loid) dissolution using the inhalation-ingestion bioaccessibility assay (IIBA) was significantly higher (p<0.05) for all PM samples.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29524902
[Au] Autor:Zhu S; Xia L; Wu J; Chen S; Chen F; Zeng F; Chen X; Chen C; Xia Y; Zhao X; Zhang J
[Ad] Address:Department of Epidemiology and Biostatistics, School of Public Health, Sichuan University, Chengdu 610044, China.
[Ti] Title:Ambient air pollutants are associated with newly diagnosed tuberculosis: A time-series study in Chengdu, China.
[So] Source:Sci Total Environ;631-632:47-55, 2018 Mar 07.
[Is] ISSN:1879-1026
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Although a few studies have analyzed the associations between ambient air pollutants and the development of tuberculosis (TB), most have been conducted in the core countries with inconsistent results. In this study, we used a distributed lag non-linear model to investigate the associations between the newly diagnosed TB cases and daily exposure to particulate matter with an aerodynamic diameter of <10m (PM ), nitrogen dioxide (NO ), and sulfur dioxide (SO ) in Chengdu, a severely polluted city. There were 36,108 newly diagnosed active TB cases from January 1, 2010 to December 31, 2015 in Chengdu. In a single-pollutant model, the cumulative relative risk of active TB cases was 1.06 [lag of 0 to 21days, 95% confidence interval (CI): 1.01-1.11] for each 10g/m increase in PM above the threshold of 70g/m ; 1.06 (lag of 0 to 2days, 95% CI: 1.03-1.09) for each 10g/m increase in NO above the threshold of 40g/m ; and 1.07 (lag of 0 to 2days, 95% CI: 1.02-1.12) for each 10g/m increase in SO above the threshold of 60g/m . Meanwhile, we found a positive association in males after exposure to a 10g/m increase in SO above the threshold of 60g/m at a lag of 0 to 2days. Exposure to PM , NO , and SO was associated with an increment in the incidence of active TB cases.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29524895
[Au] Autor:Li F; Schnelle-Kreis J; Cyrys J; Wolf K; Karg E; Gu J; Orasche J; Abbaszade G; Peters A; Zimmermann R
[Ad] Address:Joint Mass Spectrometry Center, Cooperation Group Comprehensive Molecular Analytics, Helmholtz Zentrum Mnchen, Neuherberg, Germany; Joint Mass Spectrometry Center, Chair of Analytical Chemistry, University of Rostock, Germany.
[Ti] Title:Spatial and temporal variation of sources contributing to quasi-ultrafine particulate matter PM in Augsburg, Germany.
[So] Source:Sci Total Environ;631-632:191-200, 2018 Mar 07.
[Is] ISSN:1879-1026
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:OBJECTIVE: to study the sources contributing to quasi-ultrafine particle (UFP) organic carbon and the spatial temporal variability of the sources. METHOD: 24h quasi-UFP (particulate matter <0.36m in this study) was sampled at a reference site continuously and at one of 5 other sites (T1, T2, T3, T4 and B1) in parallel in Augsburg, Germany from April 11th, 2014 to February 22nd, 2015, attempting to conduct 2-week campaigns at each site in 3 different seasons. Positive matrix factorization (PMF) was applied to measured organic tracers for source apportionment analyses. Pearson correlation coefficient r and coefficient of divergence (COD) were calculated to investigate spatial temporal variation of source contributions. RESULT: 5 sources were identified comprising biomass burning (BB), traffic emissions (Traffic), biogenic secondary organic aerosol (bioSOA), isoprene originated secondary organic aerosol (isoSOA) and biomass burning related secondary organic aerosol (bbSOA). In general, good temporal correlation and uniform distribution within the study area are found for bioSOA and bbSOA, probably resulting from regional formation/transport. Lower temporal correlation and spatial heterogeneity of isoSOA were found at the city background site with local influence from green space and less traffic impact. BB demonstrated very good temporal correlation, but higher contributions at sites influenced by local residential heating emissions were observed. Traffic showed the least seasonality and lower correlation over time among the sources. However, it demonstrated low spatial heterogeneity of absolute contribution, and only a few days of elevated contribution was found at T3 when wind came directly from the street nearby. CONCLUSION: temporal correlation and spatial variability of sources contributing to the organic fraction of quasi-UFP vary among sites and source types and show source-specific characteristics. Therefore, caution should be taken when using one monitor site measurement to assess human exposure in health effect studies of quasi-UFP.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29524889
[Au] Autor:van der Grift B; Ost L; Schot P; Kratz A; van Popta E; Wassen M; Griffioen J
[Ad] Address:Deltares, P.O. Box 85467, 3508 AL Utrecht, The Netherlands. Electronic address: bas.vandergrift@deltares.nl.
[Ti] Title:Forms of phosphorus in suspended particulate matter in agriculture-dominated lowland catchments: Iron as phosphorus carrier.
[So] Source:Sci Total Environ;631-632:115-129, 2018 Mar 07.
[Is] ISSN:1879-1026
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:The fate and environmental effects of phosphorus (P) in natural waters depend on its chemical forms. The particulate P (PP) concentration is dominant over the dissolved P concentration in agriculture-dominated headwaters in the Netherlands. Routine water quality monitoring programmes do not include the chemical fractionation of PP. To quantify the chemical forms of PP under various conditions in six agriculture-dominated lowland catchments in the Netherlands, a sequential chemical extraction method was applied to suspended particulate matter (SPM) samples collected by centrifugation or filtration. Centrifuge samples had lower values for the sum of the PP fractions compared with the filtration samples due to lower contents from PP fractions other than the Fe-P pool. With an average value of 8.8mgg , internationally high P contents of the SPM were found. Ferric iron-bound P was the most important PP fraction in SPM samples (38-95%; median 74%), followed by organic P (2-38%; median 15%). Exchangeable P ranged from 0.2 to 27%, with a median of 4.4%, Ca-P ranged from 0.1 to 11% with a median of 3.9% and detrital P was present in only a small fraction (0-6%; median 1.1%). Ferric iron-bound P was the dominant PP pool throughout the entire range of watercourses (from headwater ditches to catchment outlets) and in samples taken during winter months as well as those taken during summer months. Furthermore, the PP fraction distribution did not change markedly when flow conditions were altered from low to high discharge. The dominance of the Fe-P pool denotes the presence of Fe(III) precipitates in SPM that originate from exfiltration of anoxic Fe-bearing groundwater. These Fe(III) precipitates are a major fraction of the total SPM concentration (4 to 67% as Fe(OH) ; median 18%). Although not measured directly, our results suggest that formation of authigenic Fe(III) precipitates causes a rapid transformation of dissolved P in groundwater to PP in surface water. We advise including sequential chemical extraction of SPM monitoring programmes because the composition of particles is critical for P bioavailability, which is a key driving factor for eutrophication.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

  7 / 21846 MEDLINE  
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[PMID]: 29524875
[Au] Autor:Jang HN; Back SK; Sung JH; Kang YS; Jurng J; Seo YC
[Ad] Address:Dept. of Environmental Engineering, Yonsei University, Wonju, 220-710, Republic of Korea.
[Ti] Title:The simultaneous capture of mercury and fine particles by hybrid filter with powder activated carbon injection.
[So] Source:Environ Pollut;237:531-540, 2018 Mar 07.
[Is] ISSN:1873-6424
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:The hybrid filter (HF) was newly designed and operated with powder activated carbon (PAC) injection to capture mercury and fine particulate matter in the coal power plant. With PAC injection in HF operation, the capture efficiency of elemental mercury was clearly enhanced. When the injection rate of PAC increased from 0 to 20 mg/m , the speciation fraction of elemental mercury significantly decreased from 85.19% to 3.76% at the inlet of the hybrid filter. The speciation fraction of oxidized mercury did not vary greatly, whereas the particulate mercury increased from 1.31% to 94.04%. It was clearly observed that the HF played a role in the capture of mercury and fine PM by leading the conversion of elemental mercury as particulate mercury and the growth of PM via electrode discharge in the HF operation with PAC injection.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29524472
[Au] Autor:van der Toorn M; Sewer A; Marescotti D; Johne S; Baumer K; Bornand D; Dulize R; Merg C; Corciulo M; Scotti E; Pak C; Leroy P; Guedj E; Ivanov N; Martin F; Peitsch M; Hoeng J; Luettich K
[Ad] Address:PMI R&D, Philip Morris Products S.A. (Part of Philip Morris International group of companies), Quai Jeanrenaud 5, CH-2000 Neuchtel, Switzerland. Electronic address: Marco.vanderToorn@pmi.com.
[Ti] Title:The biological effects of long-term exposure of human bronchial epithelial cells to total particulate matter from a candidate modified-risk tobacco product.
[So] Source:Toxicol In Vitro;, 2018 Mar 07.
[Is] ISSN:1879-3177
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Cigarette smoking is the leading cause of preventable lung cancer (LC). Reduction of harmful constituents by heating rather than combusting tobacco may have the potential to reduce the risk of LC. We evaluated functional and molecular changes in human bronchial epithelial BEAS-2B cells following a 12-week exposure to total particulate matter (TPM) from the aerosol of a candidate modified-risk tobacco product (cMRTP) in comparison with those following exposure to TPM from the 3R4F reference cigarette. Endpoints linked to lung carcinogenesis were assessed. Four-week 3R4F TPM exposure resulted in crisis and epithelial to mesenchymal transition (EMT) accompanied by decreased barrier function and disrupted cell-to-cell contacts. By week eight, cells regained E-cadherin expression, suggesting that EMT was reversible. Increased levels of inflammatory mediators were noted in cells treated to 3R4F TPM but not in cells treated to the same or a five-fold higher concentration of cMRTP TPM. A 20-fold higher concentration of cMRTP TPM increased oxidative stress and DNA damage and caused reversible EMT. Anchorage-independent growth was observed in cells treated to 3R4F or a high concentration of cMRTP TPM. 3R4F TPM-derived clones were invasive, while cMRTP TPM-derived clones were not. Long-term exposure to TPM from the cMRTP had a lower biological impact on BEAS-2B cells compared with that of exposure to TPM from 3R4F.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 29448087
[Au] Autor:Malinska D; Szymanski J; Patalas-Krawczyk P; Michalska B; Wojtala A; Prill M; Partyka M; Drabik K; Walczak J; Sewer A; Johne S; Luettich K; Peitsch MC; Hoeng J; Duszynski J; Szczepanowska J; van der Toorn M; Wieckowski MR
[Ad] Address:Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland.
[Ti] Title:Assessment of mitochondrial function following short- and long-term exposure of human bronchial epithelial cells to total particulate matter from a candidate modified-risk tobacco product and reference cigarettes.
[So] Source:Food Chem Toxicol;115:1-12, 2018 Feb 13.
[Is] ISSN:1873-6351
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Mitochondrial dysfunction caused by cigarette smoke is involved in the oxidative stress-induced pathology of airway diseases. Reducing the levels of harmful and potentially harmful constituents by heating rather than combusting tobacco may reduce mitochondrial changes that contribute to oxidative stress and cell damage. We evaluated mitochondrial function and oxidative stress in human bronchial epithelial cells (BEAS 2B) following 1- and 12-week exposures to total particulate matter (TPM) from the aerosol of a candidate modified-risk tobacco product, the Tobacco Heating System 2.2 (THS2.2), in comparison with TPM from the 3R4F reference cigarette. After 1-week exposure, 3R4F TPM had a strong inhibitory effect on mitochondrial basal and maximal oxygen consumption rates compared to TPM from THS2.2. Alterations in oxidative phosphorylation were accompanied by increased mitochondrial superoxide levels and increased levels of oxidatively damaged proteins in cells exposed to 7.5 g/mL of 3R4F TPM or 150 g/mL of THS2.2 TPM, while cytosolic levels of reactive oxygen species were not affected. In contrast, the 12-week exposure indicated adaptation of BEAS-2B cells to long-term stress. Together, the findings indicate that 3R4F TPM had a stronger effect on oxidative phosphorylation, gene expression and proteins involved in oxidative stress than TPM from the candidate modified-risk tobacco product THS2.2.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1802
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

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[PMID]: 27776225
[Au] Autor:Matt F; Cole-Hunter T; Donaire-Gonzalez D; Kubesch N; Martnez D; Carrasco-Turigas G; Nieuwenhuijsen M
[Ad] Address:ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; Rudolf Boehm Institute of Pharmacology and Toxicology, PGS Toxicology and Environmental Protection, University of Leipzig, Leipzig, Germany; Biological Safety & Risk Management, Institute Straumann AG, Basel,
[Ti] Title:Acute respiratory response to traffic-related air pollution during physical activity performance.
[So] Source:Environ Int;97:45-55, 2016 12.
[Is] ISSN:1873-6750
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:BACKGROUND: Physical activity (PA) has beneficial, whereas exposure to traffic related air pollution (TRAP) has adverse, respiratory effects. Few studies, however, have examined if the acute effects of TRAP upon respiratory outcomes are modified depending on the level of PA. OBJECTIVES: The aim of our study was to disentangle acute effects of TRAP and PA upon respiratory outcomes and assess the impact of participants TRAP pre-exposure. METHODS: We conducted a real-world crossover study with repeated measures of 30 healthy adults. Participants completed four 2-h exposure scenarios that included either rest or intermittent exercise in high- and low-traffic environments. Measures of respiratory function were collected at three time points. Pre-exposure to TRAP was ascertained from land-use-modeled address-attributed values. Mixed-effects models were used to estimate the impact of TRAP and PA on respiratory measures as well as potential effect modifications. RESULTS: We found that PA was associated with a statistically significant increases of FEV (48.5mL, p=0.02), FEV /FVC (0.64%, p=0.005) and FEF (97.8mL, p=0.02). An increase in exposure to one unit (1g/m ) of PM was associated with a decrease in FEV (-1.31mL, p=0.02) and FVC (-1.71mL, p=0.01), respectively. On the other hand, for an otherwise equivalent exposure an increase of PA by one unit (1%Heart rate max) was found to reduce the immediate negative effects of particulate matter (PM) upon PEF (PM , 0.02L/min, p=0.047; PM , 0.02L/min p=0.02; PM , 0.03L/min, p=0.02) and the several hours delayed negative effects of PM upon FVC (PM , 0.11mL, p=0.02). The negative impact of exposure to TRAP constituents on FEV /FVC and PEF was attenuated in those participants with higher TRAP pre-exposure levels. CONCLUSIONS: Our results suggest that associations between various pollutant exposures and respiratory measures are modified by the level of PA during exposure and TRAP pre-exposure of participants.
[Mh] MeSH terms primary: Air Pollutants/toxicity
Air Pollution/adverse effects
Exercise
Particulate Matter/toxicity
Respiration/drug effects
Vehicle Emissions/toxicity
[Mh] MeSH terms secundary: Adult
Air Pollutants/analysis
Air Pollution/analysis
Cross-Over Studies
Female
Heart Rate/drug effects
Humans
Male
Middle Aged
Models, Theoretical
Motor Vehicles
Particulate Matter/analysis
Respiratory Function Tests
Vehicle Emissions/analysis
Young Adult
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (Air Pollutants); 0 (Particulate Matter); 0 (Vehicle Emissions)
[Em] Entry month:1711
[Cu] Class update date: 180311
[Lr] Last revision date:180311
[Js] Journal subset:IM
[Da] Date of entry for processing:161025
[St] Status:MEDLINE


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