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https://www.readbyqxmd.com/read/28735361/concentrations-source-identification-and-lung-cancer-risk-associated-with-springtime-pm2-5-bound-polycyclic-aromatic-hydrocarbons-pahs-in-nanjing-china
#1
Chong Chen, Zhonghuan Xia, Minmin Wu, Qianqian Zhang, Tao Wang, Liping Wang, Hao Yang
This study concentrated on the pollution level, sources, and lung cancer risk of PM2.5-bound polycyclic aromatic hydrocarbons (PAHs) in spring in Nanjing, China. The PM2.5 samples were collected in spring of the year 2016 in Nanjing. Sixteen United States Environmental Protection Agency priority PAHs were extracted and analyzed after sampling. The mean concentrations of PAHs and BaPeq were 3.98 ± 1.01 and 0.29 ± 0.08 ng/m(3), respectively, which is a low level among results from regions worldwide. The diurnal variations of PAHs and BaPeq concentrations showed a relatively high level in the early morning, at the morning rush time of work and traffic transportation, and in the evening traffic peak hours...
July 22, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28735152/a-systematic-review-of-cardiovascular-emergency-department-visits-hospital-admissions-and-mortality-associated-with-ambient-black-carbon
#2
REVIEW
Thomas J Luben, Jennifer L Nichols, Steven J Dutton, Ellen Kirrane, Elizabeth O Owens, Laura Datko-Williams, Meagan Madden, Jason D Sacks
BACKGROUND: Black carbon (BC) is a ubiquitous component of particulate matter (PM) emitted from combustion-related sources and is associated with a number of health outcomes. OBJECTIVES: We conducted a systematic review to evaluate the potential for cardiovascular morbidity and mortality following exposure to ambient BC, or the related component elemental carbon (EC), in the context of what is already known about the associations between exposure to fine particulate matter (PM2...
July 20, 2017: Environment International
https://www.readbyqxmd.com/read/28735151/do-air-pollution-and-neighborhood-greenness-exposures-improve-the-predicted-cardiovascular-risk
#3
Maayan Yitshak-Sade, Itai Kloog, Victor Novack
BACKGROUND: Numerous studies show associations between exposure to Particulate Matter and Cardiovascular disease (CVD). Current cardiovascular equations incorporate the major risk factors for CVD. The patients' environment, however, is not incorporated in these equations. METHODS: In a retrospective analysis, we assessed the contribution of neighborhood greenness and particulate matter (coarse-PM and PM<2.5μm-PM2.5) to the development of CVD by analyzing the change in prediction abilities...
July 20, 2017: Environment International
https://www.readbyqxmd.com/read/28734266/air-quality-and-health-effects-of-biogenic-volatile-organic-compounds-emissions-from-urban-green-spaces-and-the-mitigation-strategies
#4
Yuan Ren, Zelong Qu, Yuanyuan Du, Ronghua Xu, Danping Ma, Guofu Yang, Yan Shi, Xing Fan, Akira Tani, Peipei Guo, Ying Ge, Jie Chang
Biogenic volatile organic compounds (BVOCs) emissions lead to fine particulate matter (PM2.5) and ground-level ozone pollution, and are harmful to human health, especially in urban areas. However, most BVOCs estimations ignored the emissions from urban green spaces, causing inaccuracies in the understanding of regional BVOCs emissions and their environmental and health effects. In this study, we used the latest local vegetation datasets from our field survey and applied an estimation model to analyze the spatial-temporal patterns, air quality impacts, health damage and mitigating strategies of BVOCs emissions in the Greater Beijing Area...
July 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28732335/characteristics-and-source-apportionment-of-pm2-5-during-persistent-extreme-haze-events-in-chengdu-southwest-china
#5
Lulu Li, Qinwen Tan, Yuanhang Zhang, Miao Feng, Yu Qu, Junling An, Xingang Liu
Based on detailed data from Chengdu Plain (CP) from 6 January to 16 January, two typical haze episodes were analyzed to clarify the haze formation mechanism in winter. Weather conditions, chemical compositions, secondary pollutant transformation, optical properties of aerosols, the potential source contribution function (PSCF) and source apportionment were studied. The planetary boundary layer (PBL) height decreased distinctly during the haze episodes and restrained air pollutant vertical dispersion. As the haze worsened, the value of PBL × PM2...
July 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28732305/association-between-gaseous-air-pollutants-and-inflammatory-hemostatic-and-lipid-markers-in-a-cohort-of-midlife-women
#6
Xiangmei May Wu, Rupa Basu, Brian Malig, Rachel Broadwin, Keita Ebisu, Ellen B Gold, Lihong Qi, Carol Derby, Rochelle S Green
BACKGROUND: Exposures to ambient gaseous pollutants have been linked to cardiovascular diseases (CVDs), but the biological mechanisms remain uncertain. OBJECTIVES: This study examined the changes in CVD marker levels resulting from elevated exposure to ambient gaseous pollutants in midlife women. METHODS: Annual repeated measurements of several inflammatory, hemostatic and lipid makers were obtained from 2306 midlife women enrolled in the longitudinal Study of Women's Health Across the Nation (SWAN) between 1999 and 2004...
July 18, 2017: Environment International
https://www.readbyqxmd.com/read/28732119/association-between-pm2-5-and-pm2-5-constituents-and-preterm-delivery-in-california-2000-2006
#7
Rupa Basu, Dharshani Pearson, Keita Ebisu, Brian Malig
BACKGROUND: Particulate matter (PM) has been documented to contribute to preterm delivery. However, few studies have investigated the relationships between individual constituents of fine PM (PM2.5 ) and preterm delivery, and factors that may modify their associations. METHODS: In this study, we examined the associations between several prenatal exposure metrics to PM2.5 and 23 constituents of PM2.5 and preterm delivery in California from 2000 to 2006. In a retrospective cohort study including 231 637 births, we conducted logistic regression analyses adjusting for maternal, infant, temporal, geographic, and neighbourhood characteristics...
July 21, 2017: Paediatric and Perinatal Epidemiology
https://www.readbyqxmd.com/read/28732014/association-of-time-serial-changes-in-ambient-particulate-matters-pms-with-respiratory-emergency-cases-in-taipei-s-wenshan-district
#8
Jer-Hwa Chang, Shih-Chang Hsu, Kuan-Jen Bai, Shau-Ku Huang, Chin-Wang Hsu
Ambient air pollution poses a significant risk for a group of common and often debilitating respiratory diseases, but its direct impact on cause-specific respiratory diseases using emergency room visit (ERV) as an indicator remains to be fully explored. In this study, we conducted a time-series study of ambient PM2.5, NO2, SO2 and their association with ERV for asthma, COPD and pneumonia in a four-year time span. Relative risks for ERV as per log increase in the level of ambient pollutants with time lags of up to 10 days were calculated, using a generalized additive model of Poisson regression...
2017: PloS One
https://www.readbyqxmd.com/read/28731859/air-pollution-and-parkinson-s-disease-evidence-and-future-directions
#9
REVIEW
Natalia Palacios
Parkinson's disease (PD) is a neurodegenerative disease of unknown etiology that is thought to be caused by a complex combination of environmental and/or genetic factors. Air pollution exposure is linked to numerous adverse effects on human health, including brain inflammation and oxidative stress, processes that are believed to contribute to the development and progression of PD. This review provides an overview of recent advances in the epidemiology of air pollution and PD, including evidence of the effects of various pollutants (ozone, PM10, PM2...
July 21, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28730356/seasonal-variation-of-chemical-composition-and-source-apportionment-of-pm2-5-in-pune-india
#10
Ranjeeta D Gawhane, Pasumarthi Surya Prakasa Rao, Krishnakant B Budhavant, Vinayak Waghmare, Dhananjay C Meshram, Pramod D Safai
Particulate matter with size less than or equal to 2.5 μm (PM2.5) samples were collected from an urban site Pune, India, during April 2015 to April 2016. The samples were analyzed for various chemical constituents, including water soluble inorganic ions, organic carbon (OC), and elemental carbon (EC). The yearly mean total mass concentration of PM2.5 at Pune was 37.3 μg/m(3), which is almost four times higher than the annual WHO standard (10 μg/m(3)), and almost equal to that recommended by the Central Pollution Control Board, India (40 μg/m(3))...
July 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28725443/associations-of-short-term-exposure-to-air-pollution-with-respiratory-hospital-admissions-in-arak-iran
#11
Mostafa Vahedian, Narges Khanjani, Moghaddameh Mirzaee, Ali Koolivand
BACKGROUND: Ambient air pollution, is one of the most frequently stated environmental problems. Many epidemiological studies have documented adverse health effects for ambient air pollution. This study aimed to investigate the association between ambient air pollution and respiratory hospital admissions. METHODS: In this ecological time series study data about air pollutant concentrations including CO, NO2, O3, PM2.5, PM10 and SO2 and, respiratory hospital admissions in the urban population of Arak, from January 1st 2010 to December 31st 2015; were inquired, from the Arak Department of Environment, and two major hospitals, respectively...
2017: Journal of Environmental Health Science & Engineering
https://www.readbyqxmd.com/read/28724219/forecasting-pm2-5-induced-male-lung-cancer-morbidity-in-china-using-satellite-retrieved-pm2-5-and-spatial-analysis
#12
Xiao Han, Yuqin Liu, Hong Gao, Jianmin Ma, Xiaoxuan Mao, Yuting Wang, Xudong Ma
The present study predicts a spatial distribution of lung cancer morbidity in Chinese males due to exposure to PM2.5 concentration from 2010 to 2015. A spatial autocorrelation method was used to evaluate the spatial relationship between the lung cancer morbidities from 2006 to 2009 and satellite-derived PM2.5 atmospheric levels. A comprehensive grey correlation degree analysis was carried out to assess the simultaneous and lag associations between the lung cancer morbidity and PM2.5 concentration. These relationships were subsequently applied to predict male lung cancer morbidity in a specific year...
July 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28722632/pilot-intervention-study-of-household-ventilation-and-fine-particulate-matter-concentrations-in-a-low-income-urban-area-dhaka-bangladesh
#13
Anne M Weaver, Shahana Parveen, Doli Goswami, Christina Crabtree-Ide, Carole Rudra, Jihnhee Yu, Lina Mu, Alicia M Fry, Iffat Sharmin, Stephen P Luby, Pavani K Ram
Fine particulate matter (PM2.5) is a risk factor for pneumonia; ventilation may be protective. We tested behavioral and structural ventilation interventions on indoor PM2.5 in Dhaka, Bangladesh. We recruited 59 good ventilation (window or door in ≥ 3 walls) and 29 poor ventilation (no window, one door) homes. We monitored baseline indoor and outdoor PM2.5 for 48 hours. We asked all participants to increase ventilation behavior, including opening windows and doors, and operating fans. Where permitted, we installed windows in nine poor ventilation homes, then repeated PM2...
May 30, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28722335/protective-effects-of-folic-acid-on-pm2-5-induced-cardiac-developmental-toxicity-in-zebrafish-embryos-by-targeting-ahr-and-wnt-%C3%AE-catenin-signal-pathways
#14
Cong Yue, Cheng Ji, Hang Zhang, Leshuai W Zhang, Jian Tong, Yan Jiang, Tao Chen
Our previous observations indicated that extractable organic matter (EOM) from PM2.5 induced malformations in the heart of zebrafish embryos by activating AhR and inhibiting canonical Wnt/β-catenin signal pathway. As a nutritional factor, folic acid (FA) is reported to prevent cardiac defects during embryo development. Hence, we hypothesize that FA may prevent PM2.5-induced heart defects by interfering with AhR and Wnt/β-catenin signaling pathways. Our results showed that FA supplementation alleviated the EOM-induced heart defects in zebrafish embryos, and both AhR inhibitor CH223191 and Wnt activator CHIR99021 enhanced the protective efficiency of FA...
July 19, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28720799/reduced-ultrafine-particle-levels-in-s%C3%A3-o-paulo-s-atmosphere-during-shifts-from-gasoline-to-ethanol-use
#15
Alberto Salvo, Joel Brito, Paulo Artaxo, Franz M Geiger
Despite ethanol's penetration into urban transportation, observational evidence quantifying the consequence for the atmospheric particulate burden during actual, not hypothetical, fuel-fleet shifts, has been lacking. Here we analyze aerosol, meteorological, traffic, and consumer behavior data and find, empirically, that ambient number concentrations of 7-100-nm diameter particles rise by one-third during the morning commute when higher ethanol prices induce 2 million drivers in the real-world megacity of São Paulo to substitute to gasoline use (95% confidence intervals: +4,154 to +13,272 cm(-3))...
July 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28719626/impact-of-respiratory-infections-outdoor-pollen-and-socioeconomic-status-on-associations-between-air-pollutants-and-pediatric-asthma-hospital-admissions
#16
Julie E Goodman, Christine T Loftus, Xiaobin Liu, Ke Zu
BACKGROUND: Epidemiology studies have shown that ambient concentrations of ozone and fine particulate matter (PM2.5) are associated with increased emergency department (ED) visits and hospital admissions (HAs) for asthma. OBJECTIVE: Evaluate the impact of outdoor pollen, respiratory infections, and socioeconomic status (SES) on the associations between ambient ozone and PM2.5 and asthma HAs in New York City. METHODS: Daily ozone, PM2.5, meteorological factors, pollen, and hospitalization records during 1999 to 2009 were obtained for New York City residents...
2017: PloS One
https://www.readbyqxmd.com/read/28715783/development-of-land-use-regression-models-for-pm2-5-so2-no2-and-o3-in-nanjing-china
#17
Lei Huang, Can Zhang, Jun Bi
Ambient air pollution has been a global problem, especially in China. Comparing with other methods, Land Use Regression (LUR) models can obtain air pollutant concentration distribution at finer scale without the air pollution source data based on a few monitoring sites and predictors. However, limited LUR studies have been conducted on the basis of regular monitoring networks. Thus, we explored the applicability of conducting LUR models for four key air pollutants: PM2.5, SO2, NO2 and O3, on the basis of national monitoring networks which have good representation of areas with different characteristics in Nanjing, China...
July 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/28715774/model-elucidating-the-sources-and-formation-mechanisms-of-severe-haze-pollution-over-northeast-mega-city-cluster-in-china
#18
Ting Yang, Alex Gbaguidi, Pingzhong Yan, Wending Zhang, Lili Zhu, Xuefeng Yao, Zifa Wang, Hui Chen
Recent studies on regional haze pollution over China come up in general with strong variability of main causes of heavy polluted episodes, in linkage with local specificities, sources and pollution characteristics. This paper therefore aims at elucidating the main specific sources and formation mechanisms of observed strong haze pollution episodes over 1-15 November 2015 in Northeast region considered as one of biggest megacity clusters in China. The Northeast China mega-city cluster, including Heilong Jiang, Jilin and Liaoning provinces, is adjacent to Russia in the north, Mongolian at the west, North Korea at east, and representing key geographical location in the regional and transnational air pollution issues in China due to the presence of heavy industries and intense economic activities...
July 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28715770/influence-of-flue-gas-desulfurization-fgd-installations-on-emission-characteristics-of-pm2-5-from-coal-fired-power-plants-equipped-with-selective-catalytic-reduction-scr
#19
Zhen Li, Jingkun Jiang, Zizhen Ma, Oscar A Fajardo, Jianguo Deng, Lei Duan
Flue gas desulfurization (FGD) and selective catalytic reduction (SCR) technologies have been widely used to control the emissions of sulphur dioxide (SO2) and nitrogen oxides (NOX) from coal-fired power plants (CFPPs). Field measurements of emission characteristics of four conventional CFPPs indicated a significant increase in particulate ionic species, increasing PM2.5 emission with FGD and SCR installations. The mean concentrations of PM2.5 from all CFPPs tested were 3.79 ± 1.37 mg/m(3) and 5.02 ± 1...
July 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28715731/metabolomics-analysis-reveals-that-benzo-a-pyrene-a-component-of-pm2-5-promotes-pulmonary-injury-by-modifying-lipid-metabolism-in-a-phospholipase-a2-dependent-manner-in-vivo-and-in-vitro
#20
Song-Yang Zhang, Danqing Shao, Huiying Liu, Juan Feng, Baihuan Feng, Xiaoming Song, Qian Zhao, Ming Chu, Changtao Jiang, Wei Huang, Xian Wang
Particulate matter with an aerodynamic diameter less than 2.5μM (PM2.5) is one of the major environmental pollutants in China. In this study, we carried out a metabolomics profile study on PM2.5-induced inflammation. PM2.5 from Beijing, China, was collected and given to rats through intra-tracheal instillation in vivo. Acute pulmonary injury were observed by pulmonary function assessment and H.E. staining. The lipid metabolic profile was also altered with increased phospholipid and sphingolipid metabolites in broncho-alveolar lavage fluid (BALF) after PM2...
July 4, 2017: Redox Biology
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