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https://www.readbyqxmd.com/read/28646769/health-benefit-from-decreasing-exposure-to-heavy-metals-and-metalloid-after-strict-pollution-control-measures-near-a-typical-river-basin-area-in-china
#1
Suzhen Cao, Xiaoli Duan, Yingqun Ma, Xiuge Zhao, Yanwen Qin, Yan Liu, Sai Li, Binghui Zheng, Fusheng Wei
The metal(loid) pollution still is a great concern due to the effects from urbanization and industrialization. While, the health risks from the toxic metal(loid)s could decrease if strict pollution control measures were adopted. However, few studies to date investigate the health risks of heavy metal(loid)s in a systematic river basin for the dependent residents, after taking pollution control measures. Thus, the contents of metal(loid)s (Cu, Pb, Zn, Cd, Mn, As) in surface water along a typical river basin were investigated in this study, and the potential non-carcinogenic and carcinogenic health risks posed to the residents were assessed...
June 18, 2017: Chemosphere
https://www.readbyqxmd.com/read/28645274/buccal-mucosa-micronuclei-counts-in-relation-to-exposure-to-low-dose-rate-radiation-from-the-chornobyl-nuclear-accident-and-other-medical-and-occupational-radiation-exposures
#2
D Bazyka, S C Finch, I M Ilienko, O Lyaskivska, I Dyagil, N Trotsiuk, N Gudzenko, V V Chumak, K M Walsh, J Wiemels, M P Little, L B Zablotska
BACKGROUND: Ionizing radiation is a well-known carcinogen. Chromosome aberrations, and in particular micronuclei represent an early biological predictor of cancer risk. There are well-documented associations of micronuclei with ionizing radiation dose in some radiation-exposed groups, although not all. That associations are not seen in all radiation-exposed groups may be because cells with micronuclei will not generally pass through mitosis, so that radiation-induced micronuclei decay, generally within a few years after exposure...
June 23, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28641227/presence-distribution-and-risk-assessment-of-polycyclic-aromatic-hydrocarbons-in-rice-wheat-continuous-cropping-soils-close-to-five-industrial-parks-of-suzhou-china
#3
Yong Li, Ling Long, Jing Ge, Li-Xuan Yang, Jin-Jin Cheng, Ling-Xiang Sun, Changying Lu, Xiang-Yang Yu
Polycyclic aromatic hydrocarbons (PAHs) accumulated in agricultural soils are likely to threaten human health and ecosystem though the food chain, therefore, it is worth to pay more attention to soil contamination by PAHs. In this study, the presence, distribution and risk assessment of 16 priority PAHs in rice-wheat continuous cropping soils close to industrial parks of Suzhou were firstly investigated. The concentrations of the total PAHs ranged from 125.99 ng/g to 796.65 ng/g with an average of 352.94 ng/g...
June 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/28618663/chemical-characteristics-and-source-apportionment-of-pm2-5-in-lanzhou-china
#4
Jihua Tan, Leiming Zhang, Xueming Zhou, Jingchun Duan, Yan Li, Jingnan Hu, Kebin He
Daily PM2.5 samples were collected during winter 2012 and summer 2013 at an urban site in Lanzhou and were analyzed for chemical compounds including water soluble inorganic ions (WSIN), trace elements, water soluble organic carbon (WSOC), carbonaceous species (OC/EC), polycyclic aromatic hydrocarbons (PAHs), and humic-like substances (HULIS). The seasonal-average reconstructed PM2.5 mass was 120.5μgm(-3) in winter and 34.1μgm(-3) in summer. The top three groups of species in PM2.5 were OC (35.4±13.9μgm(-3)), WSIN (34...
June 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28616736/geographic-variations-in-female-breast-cancer-incidence-in-relation-to-ambient-air-emissions-of-polycyclic-aromatic-hydrocarbons
#5
Courtney Large, Yudan Wei
A significant geographic variation of breast cancer incidence exists, with incidence rates being much higher in industrialized regions. The objective of the current study was to assess the role of environmental factors such as exposure to ambient air pollution, specifically carcinogenic polycyclic aromatic hydrocarbons (PAHs) that may be playing in the geographic variations in breast cancer incidence. Female breast cancer incidence and ambient air emissions of PAHs were examined in the northeastern and southeastern regions of the USA by analyzing data from the Surveillance, Epidemiology, and End Results (SEER) Program and the State Cancer Profiles of the National Cancer Institute and from the Environmental Protection Agency...
June 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28612261/low-concentrations-of-antimony-impair-dna-damage-signaling-and-the-repair-of-radiation-induced-dsb-in-hela-s3-cells
#6
Barbara Koch, Elena Maser, Andrea Hartwig
Antimony is utilized in a large variety of industrial applications, leading to significant environmental and occupational exposure. Mainly based on animal experiments, the IARC and MAK Commission have classified antimony and its inorganic compounds as Group 2B or 2 carcinogens, respectively. However, the underlying mode(s) of action are still largely unknown. In the present study, we investigated the impact of non-cytotoxic up to cytotoxic concentrations of SbCl3 on DNA DSB repair and cell cycle control in HeLa S3 cells...
June 13, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28601791/effect-of-operational-and-water-quality-parameters-on-conventional-ozonation-and-the-advanced-oxidation-process-o3-h2o2-kinetics-of-micropollutant-abatement-transformation-product-and-bromate-formation-in-a-surface-water
#7
Marc Bourgin, Ewa Borowska, Jakob Helbing, Juliane Hollender, Hans-Peter Kaiser, Cornelia Kienle, Christa S McArdell, Eszter Simon, Urs von Gunten
The efficiency of ozone-based processes under various conditions was studied for the treatment of a surface water (Lake Zürich water, Switzerland) spiked with 19 micropollutants (pharmaceuticals, pesticides, industrial chemical, X-ray contrast medium, sweetener) each at 1 μg L(-1). Two pilot-scale ozonation reactors (4-5 m(3) h(-1)), a 4-chamber reactor and a tubular reactor, were investigated by either conventional ozonation and/or the advanced oxidation process (AOP) O3/H2O2. The effects of selected operational parameters, such as ozone dose (0...
May 11, 2017: Water Research
https://www.readbyqxmd.com/read/28595283/trends-over-time-in-tobacco-specific-nitrosamines-tsnas-in-whole-tobacco-and-smoke-emissions-from-cigarettes-sold-in-canada
#8
Christine D Czoli, David Hammond
Introduction: Tobacco-specific nitrosamines (TSNAs) are potent carcinogens. Levels of TSNAs can be modified through manufacturing practices. In the 2000s, TSNA levels in cigarettes sold in Canada were reduced by changes in tobacco curing processes. The current study examined TSNA levels over the following decade to examine trends over time. Methods: Data submitted to Health Canada under the Tobacco Reporting Regulations were used to examine whole tobacco constituents for 1809 brands and mainstream smoke emissions for 191 brands manufactured by Canada's three leading cigarette companies from 2005 through 2011/12 using one-way analysis of variances (ANOVAs) and linear regression models...
June 8, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28578944/pullulan-a-novel-molecule-for-biomedical-applications
#9
REVIEW
Ram Sarup Singh, Navpreet Kaur, Vikas Rana, John F Kennedy
Pullulan is an imperative natural polymer produced commercially by yeast like fungus Aureobasidium pullulans. It is non-toxic, non-immunogenic, non-carcinogenic and non-mutagenic in nature. The structure of pullulan consist unique linkage pattern with two α-(1→4) and one α-(1→6) glycosidic bonds in maltotriose repeating units (G3). Pullulan endows distinctive physical traits due to the presence of nine hydroxyl groups on glucopyranose rings of G3 units. It can be derivatized in various forms by substituting these hydroxyl groups to enhance its utility in biomedical applications...
September 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28578463/low-personal-exposure-to-benzene-and-1-3-butadiene-in-the-swedish-petroleum-refinery-industry
#10
Pernilla Almerud, M Akerstrom, E M Andersson, B Strandberg, G Sallsten
PURPOSE: Petroleum refinery workers are exposed to the carcinogens benzene and 1,3-butadiene. Declining exposures have been reported internationally but information on current exposure in the Swedish refinery industry is limited. The aim was to examine refinery workers' personal exposure to benzene and 1,3-butadiene and increase awareness of exposure conditions by collaboration with involved refineries. METHODS: Altogether 505 repeated personal exposure measurements were performed among workers at two refineries...
June 3, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28575826/polycyclic-aromatic-hydrocarbons-pahs-in-the-settled-dust-of-automobile-workshops-health-and-carcinogenic-risk-evaluation
#11
Nadeem Ali, Iqbal Mohammad Ibrahim Ismail, Mamdouh Khoder, Magdy Shamy, Mansour Alghamdi, Abdulrahman Al Khalaf, Max Costa
There are studies available on the occurrence of PAHs in indoor settled dust from residential and different occupational settings in literature but limited data is available on their occurrence and potential health risk assessment in automobile workshops. In recent decades Saudi Arabia has experienced tremendous growth in the petroleum industry and as a result, the automobile industry is booming. People working in automobile workshops are at a greater risk of exposure to chemicals releasing from the petroleum products...
May 30, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28573078/petroleum-carcinogenicity-and-aerodigestive-tract-in-context-of-developing-nations
#12
REVIEW
Sunali Khanna, Amit S Gharpure
Head and neck cancers from a diverse group of neoplasms, the occurrence of which can be attributed to habitual tobacco use, race, alcohol consumption, ultraviolet (UV) exposure, occupational exposure, viruses, and diet. The surging incidence rates reflect the prevalence of risk factors such as tobacco use (smoked and smokeless), betel nut chewing, urbanization and issues relating to urban air quality. Urbanization and development have catalyzed a multifold rise in levels of pollution in metropolitan cities...
April 30, 2017: Curēus
https://www.readbyqxmd.com/read/28569646/mapping-exposure-to-multi-pollutants-using-environmental-biomonitors-a-multi-exposure-index
#13
Helena C Serrano, Melanie Köbel, José Palma-Oliveira, Pedro Pinho, Cristina Branquinho
Atmosphere is a major pathway for transport and deposition of pollutants in the environment. In industrial areas, organic compounds are released or formed as by-products, such as polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/F's). Inorganic chemical elements, including lead and arsenic, are also part of the pollutants mixture, and even in low concentrations may potentially be toxic and carcinogenic. However, assessing the spatial pattern of their deposition is difficult due to high spatial and temporal heterogeneity...
June 1, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28567673/diesel-reformulation-using-bio-derived-propanol-to-control-toxic-emissions-from-a-light-duty-agricultural-diesel-engine
#14
Muthukkumar Thillainayagam, Krishnamoorthy Venkatesan, Rana Dipak, Saravanan Subramani, Balaji Sethuramasamyraja, Rajesh Kumar Babu
In the Indian agricultural sector, millions of diesel-driven pump-sets were used for irrigation purposes. These engines produce carcinogenic diesel particulates, toxic nitrogen oxides (NOx), and carbon monoxide (CO) emissions which threaten the livelihood of large population of farmers in India. The present study investigates the use of n-propanol, a less-explored high carbon bio-alcohol that can be produced by sustainable pathways from industrial and crop wastes that has an attractive opportunity for powering stationary diesel engines meant for irrigation and rural electrification...
May 31, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28554062/an-isotope-dilution-uplc-ms-ms-technique-for-the-human-biomonitoring-of-the-internal-exposure-to-glycidol-via-a-valine-adduct-at-the-n-terminus-of-hemoglobin
#15
Jan Hielscher, Bernhard H Monien, Klaus Abraham, Sönke Jessel, Albrecht Seidel, Alfonso Lampen
Fatty acid esters of glycidol (glycidyl esters) are processing contaminants generated as a byproduct of the industrial deodorization of vegetable oils and fats. Oral intake of glycidyl esters leads to the release of glycidol in the gastrointestinal tract. Glycidol is carcinogenic, genotoxic and teratogenic in rodents. It is rated as probably carcinogenic to humans (IARC group 2A). The determination of internal exposure of glycidol may support the assessment of the possible human health risks related to glycidyl ester intake...
August 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28550599/rare-earth-elements-in-street-dust-and-associated-health-risk-in-a-municipal-industrial-base-of-central-china
#16
Guangyi Sun, Zhonggen Li, Ting Liu, Ji Chen, Tingting Wu, Xinbin Feng
The content levels, distribution characteristics, and health risks associated with 15 rare earth elements (REEs) in urban street dust from an industrial city, Zhuzhou, in central China were investigated. The total REE content (∑REE) ranged from 66.1 to 237.4 mg kg(-1), with an average of 115.9 mg kg(-1), which is lower than that of Chinese background soil and Yangtze river sediment. Average content of the individual REE in street dust decreased in the order Ce > La > Nd > Y > Pr > Sm > Gd > Dy > Er > Yb > Eu > Ho > Tb > Tm > Lu...
May 26, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28536962/trace-element-contents-in-fine-particulate-matter-pm2-5-in-urban-school-microenvironments-near-a-contaminated-beach-with-mine-tailings-cha%C3%A3-aral-chile
#17
Stephanie Mesías Monsalve, Leonardo Martínez, Karla Yohannessen Vásquez, Sergio Alvarado Orellana, José Klarián Vergara, Miguel Martín Mateo, Rogelio Costilla Salazar, Mauricio Fuentes Alburquenque, Dante D Cáceres Lillo
Air quality in schools is an important public health issue because children spend a considerable part of their daily life in classrooms. Particulate size and chemical composition has been associated with negative health effects. We studied levels of trace element concentrations in fine particulate matter (PM2.5) in indoor versus outdoor school settings from six schools in Chañaral, a coastal city with a beach severely polluted with mine tailings. Concentrations of trace elements were measured on two consecutive days during the summer and winter of 2012 and 2013 and determined using X-ray fluorescence...
May 23, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28536482/nad-loss-a-new-player-in-ahr-biology-prevention-of-thymus-atrophy-and-hepatosteatosis-by-nad-repletion
#18
Silvia Diani-Moore, Jenny Shoots, Rubi Singh, Joshua B Zuk, Arleen B Rifkind
Dioxin (2,3,7,8-tetrachlorodibenzo-p-dioxin, TCDD) is a carcinogenic and highly toxic industrial byproduct that persists in the environment and produces a pleiotropic toxicity syndrome across vertebrate species that includes wasting, hepatosteatosis, and thymus atrophy. Dioxin toxicities require binding and activation of the aryl hydrocarbon receptor (AhR), a ligand activated transcription factor. However, after nearly 50 years of study, it remains unknown how AhR activation by dioxin produces toxic effects...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28530555/arsenic-speciation-and-heavy-metal-distribution-in-polished-rice-grown-in-guangdong-province-southern-china
#19
Li Ma, Lin Wang, Jie Tang, Zhaoguang Yang
Arsenic speciation and heavy metal distributions have been investigated in locally grown rice grains from Guangdong Province, Southern China. A total of 41 polished rice grain samples were collected throughout Guangdong Province. Arsenite (As(III)), as the predominant form found in the rice, was positively correlated (p<0.01) with total As (tAs) concentration. However, the percentage of As(III) reduced while tAs concentration increased (r=-0.361, p<0.05), due to restricted accumulation and translocation of As(III) in rice grains at high level of tAs...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28528292/cancer-incidence-in-the-western-australian-mining-industry-1996-2013
#20
Nita Sodhi-Berry, Alison Reid, Lin Fritschi, Aw Bill Musk, Roel Vermeulen, Nicholas de Klerk, Susan Peters
BACKGROUND: Miners are frequently exposed to established and potential carcinogens. We aimed to assess cancer incidence in miners relative to the general population and identify high-risk subgroups. METHODS: Incident cancers in Western Australian miners (n=153,922; 86% male) during 1996-2013 were identified. Indirectly standardised incidence ratios (SIRs) were calculated and mixed-effects Poisson models were used to calculate Incidence Rate Ratios (IRRs) to identify high-risk within-cohort subgroups...
May 18, 2017: Cancer Epidemiology
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