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https://www.readbyqxmd.com/read/28335405/association-of-short-term-exposure-to-ambient-fine-particulate-matter-with-skin-symptoms-in-schoolchildren-a-panel-study-in-a-rural-area-of-western-japan
#1
Masanari Watanabe, Hisashi Noma, Jun Kurai, Hiroyuki Sano, Kyoko Iwata, Degejirihu Hantan, Yuji Tohda, Eiji Shimizu
Numerous studies have unmasked the deleterious effects of particulate matter less than 2.5 μm (PM2.5) on health. However, epidemiologic evidence focusing on the effects of PM2.5 on skin health remains limited. An important aspect of Asian dust (AD) in relationship to health is the amount of PM2.5 contained therein. Several studies have demonstrated that AD can aggravate skin symptoms. The current study aimed to investigate the effects of short-term exposure to PM2.5 and AD particles on skin symptoms in schoolchildren...
March 13, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28330376/determination-of-air-pollution-related-biomarkers-of-exposure-in-urine-of-travellers-between-germany-and-china-using-liquid-chromatographic-and-liquid-chromatographic-mass-spectrometric-methods-a-pilot-study
#2
Xiao Wu, Jutta Lintelmann, Sophie Klingbeil, Jie Li, Hao Wang, Evelyn Kuhn, Sebastian Ritter, Ralf Zimmermann
OBJECTIVE: The influence of different exposures to PM2.5 (particulate matter with an aerodynamic diameter below 2.5 µm) on the concentrations of biomarkers of exposure and oxidative stress should be investigated. For this purpose urine samples from 9 individuals travelling from Germany to China were collected and analysed. MATERIALS: Robust LC and LC-MS/MS methods were established for the determination of biomarkers including 8-hydroxy-2'deoxyguanosine, malondialdehyde, F2α-isoprostanes, and hydroxylated polycyclic aromatic hydrocarbons...
March 23, 2017: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/28326484/genome-wide-transcriptional-analysis-of-cardiovascular-related-genes-and-pathways-induced-by-pm2-5-in-human-myocardial-cells
#3
Lin Feng, Xiaozhe Yang, Collins Otieno Asweto, Jing Wu, Yannan Zhang, Hejing Hu, Yanfeng Shi, Junchao Duan, Zhiwei Sun
Air pollution has been a major environment-related health threat. Most of the studies on PM2.5 toxicity have verified on the cardiovascular system and endothelial cells. However, researches on PM2.5-induced myocardial-related toxicity are limited. This study aims to fully understand the toxic effects of PM2.5 on human myocardial cell (AC16) and explore its molecular mechanism based on microarray analysis and bioinformatics analysis. Microarray data analysis manifested that PM2.5-induced toxicity affected expression of 472 genes compared with the control group, including 166 upregulated genes and 306 downregulated genes in human myocardial (AC16) cells...
March 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28322248/quantification-of-the-impact-of-aerosol-on-broadband-solar-radiation-in-north-china
#4
Bo Hu, Xiujuan Zhao, Hui Liu, Zirui Liu, Tao Song, Yuesi Wang, Liqin Tang, Xiangao Xia, Guiqian Tang, Dongsheng Ji, Tianxue Wen, Lili Wang, Yang Sun, Jinyuan Xin
PM2.5 plays a key role in the solar radiation budget and air quality assessments, but observations and historical data are relatively rare for Beijing. Based on the synchronous monitoring of PM2.5 and broadband solar radiation (Rs), a logarithmic function was developed to describe the quantitative relationship between these parameters. This empirical parameterization was employed to calculate Rsn from PM2.5 with normalized mean bias (NMB) -0.09 and calculate PM2.5 concentration from Rsn with NMB -0.12. Our results indicate that this parameterization provides an efficient and straightforward method for estimating PM2...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28321701/burden-of-disease-attributed-to-ambient-pm2-5-and-pm10-exposure-in-190-cities-in-china
#5
Kamal Jyoti Maji, Mohit Arora, Anil Kumar Dikshit
Particulate air pollution is becoming a serious public health concern in urban cities of China. Association of disability-adjusted life years (DALYs) and economic loss with air pollution-related health effects demand quantitative analysis for correctional measures in air quality. This study applies an epidemiology-based exposure-response function to obtain the quantitative estimate of health impact of particulate matter PM2.5 and PM10 across 190 cities of China during years 2014-2015. The annual average concentration of PM2...
March 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28320639/exposure-to-polycyclic-aromatic-hydrocarbons-and-volatile-organic-compounds-among-recently-pregnant-rural-guatemalan-women-cooking-and-heating-with-solid-fuels
#6
John R Weinstein, Renée Asteria-Peñaloza, Anaité Diaz-Artiga, Gilberto Davila, S Katharine Hammond, Ian T Ryde, Joel N Meyer, Neal Benowitz, Lisa M Thompson
BACKGROUND: Household air pollution is a major contributor to death and disability worldwide. Over 95% of rural Guatemalan households use woodstoves for cooking or heating. Woodsmoke contains carcinogenic or fetotoxic polycyclic aromatic hydrocarbons (PAHs) and volatile organic compounds (VOCs). Increased PAHs and VOCs have been shown to increase levels of oxidative stress. OBJECTIVE: We examined PAH and VOC exposures among recently pregnant rural Guatemalan women exposed to woodsmoke and compared exposures to levels seen occupationally or among smokers...
March 10, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28320525/reducing-indoor-air-pollutants-with-air-filtration-units-in-wood-stove-homes
#7
Marcy L McNamara, Jonathon Thornburg, Erin O Semmens, Tony J Ward, Curtis W Noonan
BACKGROUND: Biomass burning has been shown to be a major source of poor indoor air quality (IAQ) in developing and higher income countries across the world. Specifically, wood burning for cooking and heating contributes to high indoor concentrations of fine (particles with aerodynamic diameters<2.5μm; PM2.5) and coarse (particles with aerodynamic diameters <10μm and >2.5μm; PMc) particulate matter. Endotoxin, predominantly found within the coarse fraction of airborne particulate matter, is associated with proinflammatory effects and adverse outcomes among susceptible populations...
March 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319717/land-use-regression-modelling-of-air-pollution-in-high-density-high-rise-cities-a-case-study-in-hong-kong
#8
Martha Lee, Michael Brauer, Paulina Wong, Robert Tang, Tsz Him Tsui, Crystal Choi, Wei Cheng, Poh-Chin Lai, Linwei Tian, Thuan-Quoc Thach, Ryan Allen, Benjamin Barratt
Land use regression (LUR) is a common method of predicting spatial variability of air pollution to estimate exposure. Nitrogen dioxide (NO2), nitric oxide (NO), fine particulate matter (PM2.5), and black carbon (BC) concentrations were measured during two sampling campaigns (April-May and November-January) in Hong Kong (a prototypical high-density high-rise city). Along with 365 potential geospatial predictor variables, these concentrations were used to build two-dimensional land use regression (LUR) models for the territory...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319180/effect-of-outdoor-air-pollution-on-asthma-exacerbations-in-children-and-adults-systematic-review-and-multilevel-meta-analysis
#9
Pablo Orellano, Nancy Quaranta, Julieta Reynoso, Brenda Balbi, Julia Vasquez
BACKGROUND: Several observational studies have suggested that outdoor air pollution may induce or aggravate asthma. However, epidemiological results are inconclusive due to the presence of numerous moderators which influence this association. The goal of this study was to assess the relationship between outdoor air pollutants and moderate or severe asthma exacerbations in children and adults through a systematic review and multilevel meta-analysis. MATERIAL AND METHODS: We searched studies published in English on PubMed, Scopus, and Google Scholar between January 2000 and October 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28318790/wood-burning-pollution-in-southern-chile-pm2-5-source-apportionment-using-cmb-and-molecular-markers
#10
Ana M Villalobos, Francisco Barraza, Héctor Jorquera, James J Schauer
Temuco is a mid-size city representative of severe wood smoke pollution in southern Chile; i.e., ambient 24-h PM2.5 concentrations have exceeded 150 μg/m(3) in the winter season and the top concentration reached 372 μg/m(3) in 2010. Annual mean concentrations have decreased but are still above 30 μg/m(3). For the very first time, a molecular marker source apportionment of ambient organic carbon (OC) and PM2.5 was conducted in Temuco. Primary resolved sources for PM2.5 were wood smoke (37.5%), coal combustion (4...
March 16, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28315629/oxidative-stress-in-newborns-by-different-modes-of-delivery
#11
(no author information available yet)
OBJECTIVES: The aim of our study is to investigate the impact of the type of delivery - vaginal vs. cesarean section on oxidative damage determined as the lipid peroxidation (15-F2t-isoprostane (15-F2t-IsoP) in the cord blood of newborns and venous blood from mothers in two localities with different levels of air pollution: Ceske Budejovice (CB), a locality with a clean air, and Karvina, a locality with high air pollution. RESUTLS: In Karvina, the concentration of PM2...
November 19, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28315386/card9-mediated-ambient-pm2-5-induced-pulmonary-injury-is-associated-with-th17-cell
#12
Shuo Jiang, Liang Bo, Xihao Du, Jie Liu, Xuejiao Zeng, Guanglong He, Qinghua Sun, Haidong Kan, Weimin Song, Yuquan Xie, Jinzhuo Zhao
Inflammation and oxidative stress are important risk factors in PM2.5-induced injury. The current study attempted to study the role of caspase recruitment domain (CARD) 9 in ambient PM2.5-induced pulmonary injury in mice. The CARD9(-/-) and C57BL/6 mice were exposed to 3.6, 7.8 and 15.6mg/kg.bw of PM2.5 or saline by intratracheal instillation. After the last PM2.5 exposure, the spleen, bronchoalveolar lavage fluid (BALF) and pulmonary tissue were collected and examined. The results showed that PM2.5 exposure induced inflammatory cell infiltration and alveolar septal thickening in the lung...
March 14, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28303714/ph-of-aerosols-in-a-polluted-atmosphere-source-contributions-to-highly-acidic-aerosol
#13
Guo-Liang Shi, Jiao Xu, Xing Peng, Zhimei Xiao, Kui Chen, Yingze Tian, Xinbei Guan, Yinchang Feng, Haofei Yu, Athanasios Nenes, Armistead G Russell
Acidity (pH) plays a key role in the physical and chemical behavior of PM2.5. However, understanding of how specific PM sources impact aerosol pH is rarely considered. Performing source apportionment of PM2.5, allows a unique link of sources pH of aerosol from polluted city. Hourly water-soluble (WS) ions of PM2.5 were measured online from December 25th 2014 to June 19th 2015 in a northern city in China. Five sources were resolved including secondary nitrate (41%), secondary sulfate (26%), coal combustion (14%), mineral dust (11%) and vehicle exhaust (9%)...
March 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28303426/the-mechanisms-of-air-pollution-and-particulate-matter-in-cardiovascular-diseases
#14
REVIEW
Antonella Fiordelisi, Prisco Piscitelli, Bruno Trimarco, Enrico Coscioni, Guido Iaccarino, Daniela Sorriento
Clinical and epidemiological studies demonstrate that short- and long-term exposure to air pollution increases mortality due to respiratory and cardiovascular diseases. Given the increased industrialization and the increased sources of pollutants (i.e., cars exhaust emissions, cigarette smoke, industry emissions, burning of fossil fuels, incineration of garbage), air pollution has become a key public health issue to solve. Among pollutants, the particulate matter (PM) is a mixture of solid and liquid particles which differently affects human health depending on their size (i...
March 16, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28302634/residential-proximity-to-major-roads-exposure-to-fine-particulate-matter-and-aortic-calcium-the-framingham-heart-study-a-cohort-study
#15
Kirsten S Dorans, Elissa H Wilker, Wenyuan Li, Mary B Rice, Petter L Ljungman, Joel Schwartz, Brent A Coull, Itai Kloog, Petros Koutrakis, Ralph B D'Agostino, Joseph M Massaro, Udo Hoffmann, Christopher J O'Donnell, Murray A Mittleman
OBJECTIVES: Traffic and ambient air pollution exposure are positively associated with cardiovascular disease, potentially through atherosclerosis promotion. Few studies have assessed associations of these exposures with thoracic aortic calcium Agatston score (TAC) or abdominal aortic calcium Agatston score (AAC), systemic atherosclerosis correlates. We assessed whether living close to a major road and residential fine particulate matter (PM2.5) exposure were associated with TAC and AAC in a Northeastern US cohort...
March 16, 2017: BMJ Open
https://www.readbyqxmd.com/read/28300224/short-term-air-pollution-exposure-aggravates-parkinson-s-disease-in-a-population-based-cohort
#16
Hyewon Lee, Woojae Myung, Doh Kwan Kim, Satbyul Estella Kim, Clara Tammy Kim, Ho Kim
Increasing experimental evidence has suggested air pollution as new risk factor for neurological disease. Although long-term exposure is reportedly related to neurological disease, information on association with short-term exposure is scarce. We examined the association of short-term exposure to particles <2.5 μm (PM2.5), nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and carbon monoxide (CO) with PD aggravation in Seoul from the National Health Insurance Service-National Sample Cohort, Korea during 2002-2013...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28297636/comprehensive-pulmonary-metabolome-responses-to-intratracheal-instillation-of-airborne-fine-particulate-matter-in-rats
#17
Xiaofei Wang, Shoufang Jiang, Ying Liu, Xiaoyan Du, Weibing Zhang, Jie Zhang, Heqing Shen
Airborne fine particulate matter (PM2.5) has been closely related with a variety of lung diseases. Although some modes of action (e.g. oxidative stress, inflammations) have been proposed, but the pulmonary toxicological mechanism remains obscure. In this paper, in order to understand the comprehensive pulmonary response to PM2.5 stress, a non-targeted high-throughput metabolomics strategy was adopted to characterize the overall metabolic changes and relevant toxicological pathways. PM2.5 samples were collected from Tangshan, one of the most polluted cities in China...
March 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28295129/exposure-to-fine-particulate-matter-air-pollution-in-canada
#18
Lauren Pinault, Aaron van Donkelaar, Randall V Martin
BACKGROUND: Exposure to ambient fine particulate matter (PM2.5) has been associated with a greater risk of non-accidental, cardiovascular and respiratory mortality in Canada. Research based on Canadian cohorts suggests that exposure to PM2.5 varies by demographic and socioeconomic characteristics. Studies of NO₂, another pollutant, indicate that persons of lower socioeconomic status and some visible minority groups have greater exposure in urban centres. DATA AND METHODS: National residential PM2...
March 15, 2017: Health Reports
https://www.readbyqxmd.com/read/28294598/spatial-and-temporal-distributions-of-organophosphate-ester-concentrations-from-atmospheric-particulate-matter-samples-collected-across-houston-tx
#19
Adelaide E Clark, Subin Yoon, Rebecca J Sheesley, Sascha Usenko
Atmospheric particulate matter (PM) samples were collected from four ground-based sites located in the Houston, TX (Sept 21-28, 2013) and were analyzed for 12 organophosphate esters (OPEs; current-use plasticizers and flame retardants). Samples analyzed included daytime, nighttime, and 24 hour PM2.5 (PM <2.5 µm aerodynamic diameter) and total suspended particulate (TSP) samples. PM2.5 and TSP atmospheric ΣOPE concentrations varied over an order of magnitude and were statistically significantly different between urban and suburban/industrial sites...
March 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28293955/low-resistance-dual-purpose-air-filter-releasing-negative-ions-and-effectively-capturing-pm2-5
#20
Xinglei Zhao, Yuyao Li, Ting Hua, Pan Jiang, Xia Yin, Jianyong Yu, Bin Ding
The fatal danger of pollution due to particulate matter (PM) calls for both high-efficiency and low-resistance air purification materials, which also provide healthcare. This is however still a challenge. Herein, a low-resistance air filter capable of releasing negative ions (NIs) and efficiently capturing PM2.5 was prepared by electrospinning polyvinylidene fluoride (PVDF) fibers doped with negative ions powder (NIPs). The air-resistance of fibrous membranes decreased from 9.5 to 6 Pa (decrease of 36%) on decreasing the average fiber diameter from 1...
March 23, 2017: ACS Applied Materials & Interfaces
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