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Environment International

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https://www.readbyqxmd.com/read/28441547/phthalate-exposure-even-below-us-epa-reference-doses-was-associated-with-semen-quality-and-reproductive-hormones-prospective-marhcs-study-in-general-population
#1
Qing Chen, Huan Yang, Niya Zhou, Lei Sun, Huaqiong Bao, Lu Tan, Hongqiang Chen, Xi Ling, Guowei Zhang, Linping Huang, Lianbing Li, Mingfu Ma, Hao Yang, Xiaogang Wang, Peng Zou, Kaige Peng, Taixiu Liu, Xiefei Shi, Dejian Feng, Ziyuan Zhou, Lin Ao, Zhihong Cui, Jia Cao
BACKGROUND: Environment-Protection-Agency Reference Doses (EPA RfDs) for phthalate intakes are based on limited evidence, especially regarding low-dose male-reproductive toxicity. This study investigates the association between phthalate exposure and semen parameters and reproductive hormones in a general population with low phthalate exposure compared to the EPA RfDs. METHODS: The MARHCS (Male-Reproductive-Health-in-Chongqing-College-Students) cohort recruited 796 male students, who experienced a relocation of campuses and shifting environmental exposure...
April 22, 2017: Environment International
https://www.readbyqxmd.com/read/28434561/concentration-response-of-short-term-ozone-exposure-and-hospital-admissions-for-asthma-in-texas
#2
Ke Zu, Xiaobin Liu, Liuhua Shi, Ge Tao, Christine T Loftus, Sabine Lange, Julie E Goodman
BACKGROUND: Short-term exposure to ozone has been associated with asthma hospital admissions (HA) and emergency department (ED) visits, but the shape of the concentration-response (C-R) curve is unclear. METHODS: We conducted a time series analysis of asthma HAs and ambient ozone concentrations in six metropolitan areas in Texas from 2001 to 2013. Using generalized linear regression models, we estimated the effect of daily 8-hour maximum ozone concentrations on asthma HAs for all ages combined, and for those aged 5-14, 15-64, and 65+years...
April 20, 2017: Environment International
https://www.readbyqxmd.com/read/28414931/human-adipose-tissue-levels-of-persistent-organic-pollutants-and-metabolic-syndrome-components-combining-a-cross-sectional-with-a-10-year-longitudinal-study-using-a-multi-pollutant-approach
#3
Vicente Mustieles, Mariana F Fernández, Piedad Martin-Olmedo, Beatriz González-Alzaga, Andrés Fontalba-Navas, Russ Hauser, Nicolás Olea, Juan P Arrebola
We aimed to assess the influence of long-term exposure to POPs on the risk of metabolic syndrome, combining a cross-sectional with a 10-year longitudinal follow-up design. Residues of eight POPs were quantified in adipose tissue samples from 387 participants recruited between 2003 and 2004 in Granada province (Spain). The outcome ("metabolically compromised") was defined as having ≥1 diagnosis of type 2 diabetes, hypertension, hypertriglyceridemia, and/or low HDL cholesterol. The cross-sectional analysis was conducted in the initial cohort, while the 10-year longitudinal analysis was conducted in those 154 participants free of any of the so-mentioned metabolic diseases and classified as "metabolically healthy" at recruitment...
April 14, 2017: Environment International
https://www.readbyqxmd.com/read/28412010/assessment-of-impact-of-urbanisation-on-background-radiation-exposure-and-human-health-risk-estimation-in-kuala-lumpur-malaysia
#4
M S M Sanusi, A T Ramli, W M S W Hassan, M H Lee, A Izham, M N Said, H Wagiran, A Heryanshah
Kuala Lumpur has been undergoing rapid urbanisation process, mainly in infrastructure development. The opening of new township and residential in former tin mining areas, particularly in the heavy mineral- or tin-bearing alluvial soil in Kuala Lumpur, is a contentious subject in land-use regulation. Construction practices, i.e. reclamation and dredging in these areas are potential to enhance the radioactivity levels of soil and subsequently, increase the existing background gamma radiation levels. This situation is worsened with the utilisation of tin tailings as construction materials apart from unavoidable soil pollutions due to naturally occurring radioactive materials in construction materials, e...
April 12, 2017: Environment International
https://www.readbyqxmd.com/read/28411585/the-association-between-air-pollution-and-type-2-diabetes-in-a-large-cross-sectional-study-in-leicester-the-champions-study
#5
Gary O'Donovan, Yogini Chudasama, Samuel Grocock, Roland Leigh, Alice M Dalton, Laura J Gray, Thomas Yates, Charlotte Edwardson, Sian Hill, Joe Henson, David Webb, Kamlesh Khunti, Melanie J Davies, Andrew P Jones, Danielle H Bodicoat, Alan Wells
BACKGROUND: Observational evidence suggests there is an association between air pollution and type 2 diabetes; however, there is high risk of bias. OBJECTIVE: To investigate the association between air pollution and type 2 diabetes, while reducing bias due to exposure assessment, outcome assessment, and confounder assessment. METHODS: Data were collected from 10,443 participants in three diabetes screening studies in Leicestershire, UK. Exposure assessment included standard, prevailing estimates of outdoor nitrogen dioxide and particulate matter concentrations in a 1×1km area at the participant's home postcode...
April 12, 2017: Environment International
https://www.readbyqxmd.com/read/28410473/thyroid-hormone-parameters-during-pregnancy-in-relation-to-urinary-bisphenol-a-concentrations-a-repeated-measures-study
#6
Max T Aung, Lauren E Johns, Kelly K Ferguson, Bhramar Mukherjee, Thomas F McElrath, John D Meeker
BACKGROUND: Maternal supply of thyroid hormones during pregnancy serves a critical role in fetal development. Although animal and in vitro studies provide evidence for thyroid hormone disruption as a result of bisphenol A (BPA) exposure, there is still a lack of evidence in human studies, particularly in the context of pregnancy. OBJECTIVES: We aimed to explore the associations between urinary BPA concentrations and plasma thyroid hormone parameters during gestation in pregnant women, and also investigated potential windows of vulnerability during gestation...
April 11, 2017: Environment International
https://www.readbyqxmd.com/read/28407489/exposure-to-the-plasticizer-di-2-ethylhexyl-terephthalate-dehtp-in-portuguese-children-urinary-metabolite-levels-and-estimated-daily-intakes
#7
Frederik Lessmann, Luísa Correia-Sá, Conceição Calhau, Valentina F Domingues, Tobias Weiss, Thomas Brüning, Holger M Koch
Classical ortho-phthalate plasticizers are, due to their endocrine disrupting potency and reproductive toxicity, increasingly replaced by alternative plasticizers. Di(2-ethylhexyl) terephthalate (DEHTP) is one of these substitutes. In this study, we investigated DEHTP exposure in 107 Portuguese children (4-17years old) by analyzing specific DEHTP metabolites in their urine using a newly developed LC-MS/MS method. We could detect the major, specific DEHTP metabolite mono(2-ethyl-5-carboxypentyl) terephthalate (5cx-MEPTP) in 100% of the samples with levels above the limit of quantification in 96% of the samples (median concentration 4...
April 10, 2017: Environment International
https://www.readbyqxmd.com/read/28395858/association-between-exposure-to-organochlorine-compounds-and-maternal-thyroid-status-role-of-the-iodothyronine-deiodinase-1-gene
#8
Sabrina Llop, Mario Murcia, Mar Alvarez-Pedrerol, Joan O Grimalt, Loreto Santa-Marina, Jordi Julvez, Fernando Goñi-Irigoyen, Mercedes Espada, Ferran Ballester, Marisa Rebagliato, Maria-Jose Lopez-Espinosa
INTRODUCTION: Exposure to organochlorine compounds (OCs) may interfere with thyroid hormone (TH) homeostasis. The disruption of the deiodinase (DIO) enzymes has been proposed as a mechanism of action. AIM: To evaluate the association between exposure to OCs and TH status in pregnant women, as well as to explore the role of genetic variations in the DIO1 and DIO2 genes. METHODS: The study population (n=1128) was composed of pregnant women who participated in the INMA Project (Spain, 2003-2006)...
April 8, 2017: Environment International
https://www.readbyqxmd.com/read/28395145/socio-economic-costs-of-indoor-air-pollution-a-tentative-estimation-for-some-pollutants-of-health-interest-in-france
#9
Guillaume Boulanger, Thomas Bayeux, Corinne Mandin, Séverine Kirchner, Benoit Vergriette, Valérie Pernelet-Joly, Pierre Kopp
An evaluation of the socio-economic costs of indoor air pollution can facilitate the development of appropriate public policies. For the first time in France, such an evaluation was conducted for six selected pollutants: benzene, trichloroethylene, radon, carbon monoxide, particles (PM2.5 fraction), and environmental tobacco smoke (ETS). The health impacts of indoor exposure were either already available in published works or were calculated. For these calculations, two approaches were followed depending on the available data: the first followed the principles of quantitative health risk assessment, and the second was based on concepts and methods related to the health impact assessment...
April 7, 2017: Environment International
https://www.readbyqxmd.com/read/28392067/cognitive-impacts-of-ambient-air-pollution-in-the-national-social-health-and-aging-project-nshap-cohort
#10
Lindsay A Tallon, Justin Manjourides, Vivian C Pun, Carmel Salhi, Helen Suh
BACKGROUND: Pathways through which air pollution may impact cognitive function are poorly understood, particularly with regard to whether and how air pollution interacts with social and emotional factors to influence cognitive health. OBJECTIVE: To examine the association between air pollutant exposures and cognitive outcomes among older adults participating in the National Social Life, Health, and Aging Project (NSHAP) cohort study. METHODS: Measures of cognitive function, social connectedness, and physical and mental health were obtained for each NSHAP participant starting with Wave 1 of the study in 2005...
April 6, 2017: Environment International
https://www.readbyqxmd.com/read/28392066/maternal-cell-phone-use-during-pregnancy-and-child-behavioral-problems-in-five-birth-cohorts
#11
Laura Birks, Mònica Guxens, Eleni Papadopoulou, Jan Alexander, Ferran Ballester, Marisa Estarlich, Mara Gallastegi, Mina Ha, Margaretha Haugen, Anke Huss, Leeka Kheifets, Hyungryul Lim, Jørn Olsen, Loreto Santa-Marina, Madhuri Sudan, Roel Vermeulen, Tanja Vrijkotte, Elisabeth Cardis, Martine Vrijheid
INTRODUCTION: Previous studies have reported associations between prenatal cell phone use and child behavioral problems, but findings have been inconsistent and based on retrospective assessment of cell phone use. This study aimed to assess this association in a multi-national analysis, using data from three cohorts with prospective data on prenatal cell phone use, together with previously published data from two cohorts with retrospectively collected cell phone use data. METHODS: We used individual participant data from 83,884 mother-child pairs in the five cohorts from Denmark (1996-2002), Korea (2006-2011), the Netherlands (2003-2004), Norway (2004-2008), and Spain (2003-2008)...
April 6, 2017: Environment International
https://www.readbyqxmd.com/read/28392065/quantitative-bias-analysis-of-a-reported-association-between-perfluoroalkyl-substances-pfas-and-endometriosis-the-influence-of-oral-contraceptive-use
#12
Gerard Ngueta, Matthew P Longnecker, Miyoung Yoon, Christopher D Ruark, Harvey J Clewell, Melvin E Andersen, Marc-André Verner
An association between serum levels of perfluoroalkyl substances (PFAS) and endometriosis has recently been reported in an epidemiologic study. Oral contraceptive use to treat dysmenorrhea (pelvic pain associated with endometriosis) could potentially influence this association by reducing menstrual fluid loss, a route of excretion for PFAS. In this study, we aimed to evaluate the influence of differential oral contraceptive use on the association between PFAS and endometriosis. We used a published life-stage physiologically based pharmacokinetic (PBPK) model to simulate plasma levels of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) from birth to age at study participation (range 18-44years)...
April 6, 2017: Environment International
https://www.readbyqxmd.com/read/28392064/prenatal-exposure-to-perfluoroalkyl-acids-and-prevalence-of-infectious-diseases-up-to-4years-of-age
#13
Houman Goudarzi, Chihiro Miyashita, Emiko Okada, Ikuko Kashino, Chi-Jen Chen, Sachiko Ito, Atsuko Araki, Sumitaka Kobayashi, Hideyuki Matsuura, Reiko Kishi
Perfluoroalkyl acids (PFAAs) are synthetic chemicals with ability to repel oils and water, and have been widely used in many industrial and household applications such as adhesives and water- and stain-repellent surfaces to nonstick coatings. Animal studies have shown that PFAAs have immunotoxic effects. However, few epidemiological studies have investigated the effects of PFAAs on infectious diseases occurrence. We examined the relationship between prenatal exposure to PFAAs and prevalence of infectious diseases up to 4years of life...
April 6, 2017: Environment International
https://www.readbyqxmd.com/read/28391007/polychlorinated-naphthalenes-pcns-in-food-and-humans
#14
REVIEW
Alwyn Fernandes, Martin Rose, Jerzy Falandysz
Polychlorinated naphthalenes (PCNs) are legacy contaminants that are listed by the Stockholm convention, initially for reduction of inadvertent production and ultimately, for elimination. They originate through releases from older electrical equipment, inadvertent contamination in industrial chemicals and from combustion processes such as incineration. Recent advances in measurement techniques have allowed a greater characterisation of PCN occurrence, yielding more specific data including individual PCN congener concentrations...
April 6, 2017: Environment International
https://www.readbyqxmd.com/read/28390661/ambient-air-pollution-and-low-birth-weight-are-some-women-more-vulnerable-than-others
#15
Nadja Westergaard, Ulrike Gehring, Rémy Slama, Marie Pedersen
BACKGROUND AND OBJECTIVES: Ambient air pollution is controllable, and it is one of the greatest environmental threats to human health. Studies conducted worldwide have provided evidence that maternal exposure to ambient air pollution during pregnancy enhances the risk of low birth weight at term (TLBW, <2500g among infants born ≥37 completed weeks of gestation), a maker of intrauterine growth restriction (IUGR), and suggest that some subgroups of pregnant women who are smoking, of low or high body-mass index (BMI), low socioeconomic status (SES) or asthma are more vulnerable towards the effect of ambient air pollution...
April 6, 2017: Environment International
https://www.readbyqxmd.com/read/28389128/season-dependent-concentrations-of-urinary-phthalate-metabolites-among-chinese-pregnant-women-repeated-measures-analysis
#16
Hui Gao, Yuan-Duo Zhu, Yuan-Yuan Xu, Yun-Wei Zhang, Hui-Yuan Yao, Jie Sheng, Zhong-Xiu Jin, Ling-Ling Ren, Kun Huang, Jia-Hu Hao, Fang-Biao Tao
In utero exposure to phthalates may have adverse effects on pregnant women and their offsprings. Therefore, the exposure level of these substances among individuals, particularly among sensitive population, is of concern. The objective of the present study is to characterize urinary concentrations of phthalate metabolites at multiple time points during pregnancy in Chinese women. A total of 3455 pregnant women were included from Ma'anshan Birth Cohort in China. Spot urine samples in the morning (8:00-10:00) and questionnaires were obtained at three separate visits (approximately in 10, 26, and 34 gestational weeks)...
April 4, 2017: Environment International
https://www.readbyqxmd.com/read/28335995/assessment-of-dietary-exposure-to-organohalogen-contaminants-legacy-and-emerging-flame-retardants-in-a-norwegian-cohort
#17
Fuchao Xu, Joo-Hui Tay, Adrian Covaci, Juan Antonio Padilla-Sánchez, Eleni Papadopoulou, Line Småstuen Haug, Hugo Neels, Ulla Sellström, Cynthia A de Wit
Polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs), emerging halogenated flame retardants (EHFRs) and organophosphate flame retardants (PFRs) were detected in 24h duplicate diet samples from a Norwegian cohort (n=61), with concentrations ranging from <method limit of quantification (MLQ)-0.64ng/g ww, <MLQ-0.70ng/g ww, <MLQ-0.93ng/g ww, <MLQ-0.14ng/g ww, and <MLQ-150ng/g ww, respectively. All studied contaminants were detected in the duplicate diet samples with detection frequencies (DF) ranging from 1...
March 20, 2017: Environment International
https://www.readbyqxmd.com/read/28325534/association-between-meteorological-factors-and-hepatitis-a-in-spain-2010-2014
#18
Pedro Gullón, Carmen Varela, Elena Vanessa Martínez, Diana Gómez-Barroso
BACKGROUND: There is growing concern of how climate change could affect public health, due to the increase number of extreme climate events. Hence, the study of the role that climate events play on the distribution of waterborne diseases, like Hepatitis A, could be key for developing new prevention approaches. OBJECTIVE: To investigate the association between climate factors and Hepatitis A in Spain between 2010 and 2014. METHODS: Weekly Hepatitis A cases between 2010 and 2014 were obtained from the Spanish Epidemiology Surveillance Network...
March 18, 2017: Environment International
https://www.readbyqxmd.com/read/28320548/evaluating-the-influence-of-half-life-milk-plasma-partition-coefficient-and-volume-of-distribution-on-lactational-exposure-to-chemicals-in-children
#19
Marc-André Verner, Laurence Plouffe, Kyra K Kieskamp, Inés Rodríguez-Leal, Satori A Marchitti
Women are exposed to multiple environmental chemicals, many of which are known to transfer to breast milk during lactation. However, little is known about the influence of the different chemical-specific pharmacokinetic parameters on children's lactational dose. Our objective was to develop a generic pharmacokinetic model and subsequently quantify the influence of three chemical-specific parameters (biological half-life, milk:plasma partition coefficient, and volume of distribution) on lactational exposure to chemicals and resulting plasma levels in children...
March 17, 2017: Environment International
https://www.readbyqxmd.com/read/28318602/metals-hormones-and-sexual-maturation-in-flemish-adolescents-in-three-cross-sectional-studies-2002-2015
#20
Sam De Craemer, Kim Croes, Nicolas van Larebeke, Stefaan De Henauw, Greet Schoeters, Eva Govarts, Ilse Loots, Tim Nawrot, Vera Nelen, Elly Den Hond, Liesbeth Bruckers, Yue Gao, Willy Baeyens
Sex hormone levels and timing of sexual maturation are considered important markers for health status of adolescents in puberty, and previous research suggests they might be influenced by metal exposure. In three campaigns of the Flemish Environment and Health Study (FLEHS I 2002-2006; FLEHS II 2007-2011 and FLEHS III 2012-2015), data were collected on internal exposure to metals (Cd, Cu, Pb, Cr, Mn, Tl, Ni, Sb, Hg, As and As species) and sexual maturation in 2671 14-15years old adolescents. All metals were measured in blood and/or urine, except total- and methylmercury which were measured in hair samples...
March 17, 2017: Environment International
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