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https://www.readbyqxmd.com/read/29903291/-toxicity-of-vehicle-exhaust-on-beas-2b-cells-in-vitro-by-air-liquid-interface
#1
Tao Yu, Xueyan Zhang, Yanhua Wang, Tao Meng, Zhongxu Wang, Bin Li, Yuxin Zheng, Ping Bin
OBJECTIVE: To evaluate the toxic effect of vehicle exhaust( VE) on lung epithelial cells by air-liquid interface( ALI) method in vitro, and analyze the different toxicity of VE after being treated with 0. 2 μm filter. METHODS: VE were collected using20 liter Tedlar bags and their particulate matter( PM) number, surface and mass concentration were measured by particle size spectrometer for the interference of 0. 2 μm filter or non-filter. Four groups were included, which divided into blank control group, clean air group, filtered VE exposure group, non-filtered VE exposure group...
September 2017: Wei Sheng Yan Jiu, Journal of Hygiene Research
https://www.readbyqxmd.com/read/29903282/-temporal-and-spatial-distribution-of-air-pollution-in-shenzhen-city-during-2014-2016
#2
Jingfeng Mou, Xing Zhao, Jingjie Fan, Zhouning Yan, Yan Yan, Dan Zeng, Wenliang Luo, Zhiwei Fan
OBJECTIVE: To investigate spatial-temporal distribution characteristics of air quality indexes( AQI) in Shenzhen City and provide scientific basis for control of air pollution. METHODS: The monitoring data of AQI collected at the 19 monitoring posts in Shenzhen City from 2014 to 2016 were pooled and analyzed, and daily, seasonal and annual means of AQI at each monitoring post were forked out. The theory of spatial autocorrelation analysis was adopted in analyzing strength of the spatial autocorrelation and spatial clustering patterns of AQI...
March 2018: Wei Sheng Yan Jiu, Journal of Hygiene Research
https://www.readbyqxmd.com/read/29903169/-effects-of-vitamin-e-and-%C3%AF-3-fatty-acids-on-protecting-ambient-pm_-2-5-induced-cardiovascular-injury
#3
Xihao Du, Shuo Jiang, Liang Bo, Jie Liu, Xuejiao Zeng, Rongfang Jiang, Weimin Song, Jinzhuo Zhao
OBJECTIVE: To observe whether vitamin E( Ve) and ω-3 polyunsaturated fatty acids( ω-3 FA) could prevent the fine particulate matter( PM_(2. 5))-induced cardiovascular injury and explore the potential mechanism. METHODS: The SD rats were assigned randomly to 8 groups, those were control group, PM_(2. 5)group, Ve treatment groups( 3, 10, 30 mg/( kg·d)) and ω-3 FA treatment groups( 10, 30 and 90 mg/( kg·d)). The rats were pretreated with different concentration of Ve and ω-3 FA separately for 14 days, then were exposed to ambient PM_(2...
July 2017: Wei Sheng Yan Jiu, Journal of Hygiene Research
https://www.readbyqxmd.com/read/29897085/the-anti-obesity-effect-of-starch-in-a-whole-grain-like-structural-form
#4
Kaiyun Luo, Xufeng Wang, Genyi Zhang
Obesity is a risk factor for many chronic diseases, and the anti-obesity effect of starch in a whole grain-like structural form (WGLSF) prepared through co-gelation with oat β-glucan and alginate was studied using high-fat (HF) induced obese male C57BL/6J mice. In vitro human fecal fermentation of WGLSF-starch showed a slower rate of fermentation and a higher production of butyric acid (132.0 μmol per 50 mg sample) when compared to the physical mixture counterpart of starch, β-glucan, and alginate (PM) (110...
June 13, 2018: Food & Function
https://www.readbyqxmd.com/read/29896377/triple-bonds-of-niobium-with-silicon-germaniun-and-tin-the-tetrylidyne-complexes-%C3%AE%C2%BA-3-tmps-co-2-nb-0000000000000000000000000000000000-0000000000000000000000000000000000-0000000000000000000000000000000000-0000000000000000000000000000000000-0000000000000000000000000000000000
#5
Alexander C Filippou, David Hoffmann, Gregor Schnakenburg
A systematic, efficient approach to first complexes containing a triple bond between niobium and the elements silicon, germanium or tin is reported. The approach involves a metathetical exchange of the niobium-centered nucleophile (NMe4 )[Nb(CO)4 (κ2 -tmps)] ( 1 ) (tmps = MeSi(CH2 PMe2 )3 ) with a suitable organotetrel(ii)halide. Compound 1 was obtained from (NMe4 )[Nb(CO)6 ] and the triphosphane tmps by photodecarbonylation. Reaction of 1 with the disilene E -Tbb(Br)Si 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 Si(Br)Tbb in the presence of 4-dimethylaminopyridine afforded selectively the red-brown silylidyne complex [(κ3 -tmps)(CO)2 Nb 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 Si-Tbb] ( 2-Si , Tbb = 4- tert -butyl-2,6-bis(bis(trimethylsilyl)methyl)phenyl)...
September 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29895537/cardiovascular-and-cerebrovascular-mortality-associated-with-acute-exposure-to-pm-2-5-in-mexico-city
#6
Iván Gutiérrez-Avila, Leonora Rojas-Bracho, Horacio Riojas-Rodríguez, Itai Kloog, Allan C Just, Stephen J Rothenberg
BACKGROUND AND PURPOSE: Acute exposure to particulate matter with aerodynamic diameter <2.5 μm (PM2.5 ) is associated with acute cardiovascular and cerebrovascular mortality. The aim of this study was to evaluate these associations with specific causes of cardiovascular and cerebrovascular mortality in Mexico City. METHODS: We obtained daily mortality records for Mexico City from 2004 to 2013 for cardiovascular and cerebrovascular causes in people ≥25 and ≥65 years old...
June 12, 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29894874/origin-of-polycyclic-aromatic-hydrocarbons-and-other-organic-pollutants-in-the-air-particles-of-subway-stations-in-barcelona
#7
Barend L van Drooge, Raimon M Prats, Cristina Reche, MariCruz Minguillón, Xavier Querol, Joan O Grimalt, Teresa Moreno
Underground subways transport large numbers of citizens in big cities, which must breathe air with limited ventilation. These atmospheric conditions may enhance the concentration of air pollutants from both outdoor and indoor air. The influence of ventilation conditions and maintenance activities on the concentrations of air pollutants have been studied. Particulate matter with aerodynamic diameter smaller than 2.5 μm (PM2.5 ) in indoor air was sampled in ten platforms of nine subway stations of the metropolitan area of Barcelona in 2015 and 2016...
June 9, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29892996/variability-of-school-children-s-activity-comes-from-recess-and-before-school
#8
Iku Suzuki, Masayuki Okuda, Maki Tanaka, Shigeru Inoue, Shigeho Tanaka, Chiaki Tanaka
BACKGROUND: An accurate description of physical activity (PA) at school is required for appropriate health interventions. We examined PA patterns of children, and identified time periods that influenced them. METHODS: Forty students in 5 Japanese primary schools were asked to wear triaxial accelerometers for at least7 days. We obtained coefficients of variance (CV) at 15 min intervals, and conducted factor analysis of the school periods. A questionnaire was used to investigate where students spent time before school, and during recesses...
June 12, 2018: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/29891785/eigenvector-spatial-filtering-regression-modeling-of-ground-pm-2-5-concentrations-using-remotely-sensed-data
#9
Jingyi Zhang, Bin Li, Yumin Chen, Meijie Chen, Tao Fang, Yongfeng Liu
This paper proposes a regression model using the Eigenvector Spatial Filtering (ESF) method to estimate ground PM2.5 concentrations. Covariates are derived from remotely sensed data including aerosol optical depth, normal differential vegetation index, surface temperature, air pressure, relative humidity, height of planetary boundary layer and digital elevation model. In addition, cultural variables such as factory densities and road densities are also used in the model. With the Yangtze River Delta region as the study area, we constructed ESF-based Regression (ESFR) models at different time scales, using data for the period between December 2015 and November 2016...
June 11, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29890605/nitro-and-oxy-pahs-bounded-in-pm-2-5-and-pm-1-0-under-different-weather-conditions-at-mount-tai-in-eastern-china-sources-long-distance-transport-and-cancer-risk-assessment
#10
Ying Gao, Lingxiao Yang, Jianmin Chen, Yanyan Li, Pan Jiang, Junmei Zhang, Hao Yu, Wenxing Wang
Fourteen nitro-PAHs and five oxy-PAHs associated with PM2.5 and PM1.0 were analyzed by GC-MS/MS at Mount Tai, China. 85% of the nitro-PAHs and 65% of oxy-PAHs were found in PM1.0 . The combined concentration of nitro-PAHs in PM2.5 was highest in air masses associated with biomass burning (270.50pg/m3 ) compared with measurements from heavily polluted days (93.21pg/m3 ) and clean days (81.22pg/m3 ). A similar trend was also reflected in measurements of PM1.0 . 9-FO, 9,10-ANQ, and 1-NALD were the most abundant oxy-PAHs in both PM2...
May 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29890467/liver-injury-induced-in-balb-c-mice-by-pm-2-5-exposure-and-its-alleviation-by-compound-essential-oils
#11
Ping Ya, Henggui Xu, Yanmin Ma, Mengxiong Fang, Xiaomei Yan, Jie Zhou, Fasheng Li
Accumulating evidence has suggested a strong link between exposure to air pollution and public health. In particular, inhaled airborne particulate matter <2.5 μm in aerodynamic diameter (PM2.5 ) can rapidly diffuse from the lungs to the systemic blood circulation and accumulate in the liver. In this study, we used a Balb/c mouse model to investigate liver injury caused by PM2.5 inhalation and the anti-inflammatory and antioxidant effects of compound essential oils (CEOs) in alleviating the extent of this injury...
June 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29890456/preliminary-investigation-of-aircraft-mounted-thermal-imaging-to-locate-decomposing-remains-via-the-heat-produced-by-larval-aggregations
#12
Michael J Lee, Sasha C Voss, Daniel Franklin, Ian R Dadour
This study investigated the potential of aircraft mounted thermal imaging (AMTI) to locate surficial decomposing remains (clothed and unclothed) through detection of heat generated by larval aggregations of carrion feeding insects. Two trials were carried out, each utilising four pig cadavers (40-45kg) as human analogues and exposing them to insect activity in autumn and winter on the Swan Coastal Plain, Western Australia. The Western Australia Police Air Wing helicopter, fitted with a forward looking infrared radiometer (FLIR) camera, was utilised to obtain the AMTI footage of carcasses over time...
May 25, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29887801/interpretation-the-hepatotoxicity-based-on-pharmacokinetics-investigated-through-oral-administrated-different-extraction-parts-of-polygonum-multiflorum-on-rats
#13
Miao Zhang, Longfei Lin, Hongmei Lin, Changhai Qu, Lei Yan, Jian Ni
The liver injury induced by Polygonum multiflorum (PM) used for clinical treatment has recently received widespread attention. This study aimed to determine the hepatotoxicity of PM through pharmacokinetics studies. The extract of PM was separated to isolate the anthraquinone fraction, the tannin and polysaccharide fraction, the hydroxystilbene fraction, and the combined anthraquinone fraction. A rapid LC-MS/MS method was developed and validated to simultaneously analyze 2,3,5,4'-tetrahydroxystilbene-2- O -β-glucoside (TSG), emodin-8- O -β-D-glucopyranoside (EDG), and emodin in rat plasma, and was applied to the pharmacokinetics (PK) studies...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29886708/the-impact-of-air-pollution-including-asian-sand-dust-on-respiratory-symptoms-and-health-related-quality-of-life-in-outpatients-with-chronic-respiratory-disease-in-korea-a-panel-study
#14
Motoyuki Nakao, Yoko Ishihara, Cheol-Hong Kim, In-Gyu Hyun
OBJECTIVES: Air pollution is a growing concern in Korea because of transboundary air pollution from mainland China. A panel study was conducted to clarify the effects of air pollution on respiratory symptoms and health-related quality of life (HR-QoL) in outpatients with and without chronic obstructive pulmonary disease (COPD) in Korea. METHODS: Patients filled out a questionnaire including self-reported HR-QoL in February and were followed up in May and July. The study was conducted from 2013 to 2015, with different participants each year...
May 2018: Journal of Preventive Medicine and Public Health, Yebang Ŭihakhoe Chi
https://www.readbyqxmd.com/read/29886681/-pollution-characteristics-and-health-risk-assessment-of-heavy-metals-in-pm-2-5-in-lanzhou
#15
Q Z Wei, S Li, Q Jia, B Luo, L M Su, Q Liu, X R Yuan, Y H Wang, Y Ruan, J P Niu
Objective: To understand the pollution characteristics and assess the pollution health risks of heavy metals in atmospheric PM(2.5) in Lanzhou. Methods: According to the regional characteristics of air pollution and industrial distribution characteristics in Lanzhou, atmospheric PM(2.5) was sampled monthly in Chengguan and Xigu Districts from January, 2015 to December, 2016. Detected the concentration of PM(2.5) and 12 kinds of elements (Sb, Al, As, Be, Cd, Cr, Hg, Pb, Mn, Ni, Se and Tl) by weighing method and inductively coupled plasma mass spectrometry...
June 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29885982/is-there-an-oncological-interest-in-the-combination-of-crs-hipec-for-peritoneal-carcinomatosis-of-hcc-results-of-a-multicenter-international-study
#16
Sanket Mehta, Lilian Schwarz, John Spiliotis, Mao-Chih Hsieh, Eduardo H Akaishi, Diane Goere, Paul H Sugarbaker, Dario Baratti, François Quenet, David L Bartlett, Laurent Villeneuve, Vahan Kepenekian
INTRODUCTION: Peritoneal metastasis (PM) of hepatocellular carcinoma (HCC) without distant spread are rare. The related prognosis is poor without standard treatment available. The role of cytoreduction surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) is poorly documented. METHODS: An international multicentric cohort was constituted by retrospective analysis of 21 patients undergoing CRS/HIPEC for PM of HCC between 1992 and 2016 from 10 reference centers of PSOGI...
May 28, 2018: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29885615/cytotoxicity-induced-by-fine-particulate-matter-pm-2-5-via-mitochondria-mediated-apoptosis-pathway-in-human-cardiomyocytes
#17
Xiaozhe Yang, Lin Feng, Yannan Zhang, Hejing Hu, Yanfeng Shi, Shuang Liang, Tong Zhao, Yang Fu, Junchao Duan, Zhiwei Sun
Although the strongly causal associations were between fine particulate matter (PM2.5 ) and cardiovascular disease, the toxic effect and potential mechanism of PM2.5 on heart was poorly understood. Thus, the aim of this study was to evaluate the cardiac toxicity of PM2.5 exposure on human cardiomyocytes (AC16). The cell viability was decreased while the LDH release was increased in a dose-dependent way after AC16 exposed to PM2.5 . The reactive oxygen species (ROS) generation and production of malondialdehyde (MDA) were increased followed by the decreasing in superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px)...
June 6, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29885590/estimation-of-personal-pm-2-5-and-bc-exposure-by-a-modeling-approach-results-of-a-panel-study-in-shanghai-china
#18
Chen Chen, Jing Cai, Cuicui Wang, Jingjin Shi, Renjie Chen, Changyuan Yang, Huichu Li, Zhijing Lin, Xia Meng, Ang Zhao, Cong Liu, Yue Niu, Yongjie Xia, Li Peng, Zhuohui Zhao, Steven Chillrud, Beizhan Yan, Haidong Kan
BACKGROUND: Epidemiologic studies of PM2.5 (particulate matter with aerodynamic diameter ≤2.5 μm) and black carbon (BC) typically use ambient measurements as exposure proxies given that individual measurement is infeasible among large populations. Failure to account for variation in exposure will bias epidemiologic study results. The ability of ambient measurement as a proxy of exposure in regions with heavy pollution is untested. OBJECTIVE: We aimed to investigate effects of potential determinants and to estimate PM2...
June 6, 2018: Environment International
https://www.readbyqxmd.com/read/29884589/the-risk-of-snow-sport-injury-in-pediatric-patients
#19
Robert J McLoughlin, Jonathan Green, Pradeep P Nazarey, Michael P Hirsh, Muriel Cleary, Jeremy T Aidlen
PURPOSE: In 2015, approximately 13,436 snowboarding or skiing injuries occurred in children younger than 15. We describe injury patterns of pediatric snow sport participants based on age, activity at the time of injury, and use of protective equipment. METHODS: A retrospective analysis was performed of 10-17 year old patients with snow-sport related injuries at a Level-1 trauma center from 2005 to 2015. Participants were divided into groups, 10-13 (middle-school, MS) and 14-17 years (high-school, HS) and compared using chi-square, Student's t-tests, and multivariable logistic regression...
June 2, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29884237/genetic-background-may-contribute-to-the-latitude-dependent-prevalence-of-dermatomyositis-and-anti-tif1-%C3%AE-autoantibodies-in-adult-patients-with-myositis
#20
Joanna E Parkes, Simon Rothwell, Alexander Oldroyd, Hector Chinoy, Janine A Lamb
BACKGROUND: The prevalence of dermatomyositis (DM) versus DM and polymyositis (PM) combined has been shown to be negatively associated with latitude. This observation has been attributed to increasing exposure to ultraviolet (UV) light towards the equator. In this study, we investigated whether differing genetic background in populations could contribute to this distribution of DM. METHODS: Case data derived from the MYOGEN (Myositis Genetics Consortium) Immunochip study (n = 1769) were used to model the association of DM prevalence and DM-specific autoantibodies with latitude...
June 8, 2018: Arthritis Research & Therapy
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