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https://www.readbyqxmd.com/read/28448915/ozone-exposure-affects-tree-defoliation-in-a-continental-climate
#1
Alessandra De Marco, Marcello Vitale, Ionel Popa, Alessandro Anav, Ovidiu Badea, Diana Silaghi, Stefan Leca, Augusto Screpanti, Elena Paoletti
Ground-level ozone (O3) affects trees through visible leaf injury, accelerating leaf senescence, declining foliar chlorophyll content, photosynthetic activity, growth, carbon sequestration, predisposing to pests attack and a variety of other physiological effects. Tree crown defoliation is one of the most important parameters that is representative of forest health and vitality. Effects of air pollution on forests have been investigated through manipulative experiments that are not representative of the real environmental conditions observed in the field...
April 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28448912/effects-of-low-levels-of-ultraviolet-radiation-on-antioxidant-mechanisms-of-japanese-medaka-oryzias-latipes
#2
Wilson F Ramírez-Duarte, Tomofumi Kurobe, Swee J Teh
Extreme weather events like drought are expected to increase with climate change, which will increase exposure of freshwater fish to ultraviolet (UV) radiation. Compared to fully grown adult fish, fish in early life stages are more susceptible to UV radiation due to the lack of well-developed pigmentation. Even though several studies have described affectation of fish health after exposure to UV radiation, most of the studies have used intensities that are only found on the surface of the earth crust or at shallow depths in water bodies, and little is known about impacts of weaker UV radiation, which can be found in deep water...
April 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28448823/accumulative-effects-of-indoor-air-pollution-exposure-on-leukocyte-telomere-length-among-non-smokers
#3
Nan Lin, Xinlin Mu, Guilian Wang, Yu'ang Ren, Shu Su, Zhiwen Li, Bin Wang, Shu Tao
Indoor air pollution is an important environmental factor that contributes to the burden of various diseases. Long-term exposure to ambient air pollution is associated with telomere shortening. However, the association between chronic indoor air pollution from household fuel combustion and leukocyte telomere length has not been studied. In our study, 137 cancer-free non-smokers were recruited. Their exposure levels to indoor air pollution from 1985 to 2014 were assessed using a face-to-face interview questionnaire, and leukocyte telomere length (LTL) was measured using a monochrome multiplex quantitative PCR method...
April 24, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28448694/the-joint-effect-of-air-pollution-exposure-and-copy-number-variation-on-risk-for-autism
#4
Dokyoon Kim, Heather Volk, Santhosh Girirajan, Sarah Pendergrass, Molly A Hall, Shefali S Verma, Rebecca J Schmidt, Robin L Hansen, Debashis Ghosh, Yunin Ludena-Rodriguez, Kyoungmi Kim, Marylyn D Ritchie, Irva Hertz-Picciotto, Scott B Selleck
Autism spectrum disorder is a complex trait with a high degree of heritability as well as documented susceptibility from environmental factors. In this study the contributions of copy number variation, exposure to air pollutants, and the interaction between the two on autism risk, were evaluated in the population-based case-control Childhood Autism Risks from Genetics and Environment (CHARGE) Study. For the current investigation, we included only those CHARGE children (a) who met criteria for autism or typical development and (b) for whom our team had conducted both genetic evaluation of copy number burden and determination of environmental air pollution exposures based on mapping addresses from the pregnancy and early childhood...
April 27, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28448366/project-tendr
#5
Laura Anderko
: Chemicals are ubiquitous in the food we eat, the water we drink, the air we breathe, and the products we use at work and in our personal lives. Toxic chemicals increase the risk of cognitive, behavioral, and neurodevelopmental disorders throughout the life span. The Toxic Substances Control Act of 1976 was intended to allow for the collection of data on and regulation of these chemicals but has been criticized for its significant limitations in protecting the public's health. In recognition of the scientific evidence demonstrating the connection between toxic environmental chemicals and neurodevelopmental disorders, Project TENDR (Targeting Environmental Neuro-Developmental Risks)-a collaborative initiative of scientists, health professionals, and children's health advocates-produced a call to action last July with the aim of reducing exposure to chemicals and pollutants that contribute to the development of these disorders...
May 2017: American Journal of Nursing
https://www.readbyqxmd.com/read/28448110/heavy-metals-induce-decline-of-derivatives-of-5-methycytosine-in-both-dna-and-rna-of-stem-cells
#6
Jun Xiong, Xiaona Liu, Qing-Yun Cheng, Shan Xiao, Lai-Xin Xia, Bifeng Yuan, Yu-Qi Feng
Toxic heavy metals have been considered to be harmful environmental contaminations. The molecular mechanisms of heavy metals-induced cytotoxicity and carcinogenicity are still not well elucidated. Previous reports showed exposures to toxic heavy metals can cause change of DNA cytosine methylation (5-methylcytosine, 5-mC). However, it is still not clear whether heavy metals have effects on the recently identified new epigenetic marks in both DNA and RNA, i.e., 5-hydroxymethylcytosine (5-hmC), 5-formylcytosine (5-foC), and 5-carboxylcytosine (5-caC)...
April 27, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28448061/grand-maternal-smoking-in-pregnancy-and-grandchild-s-autistic-traits-and-diagnosed-autism
#7
Jean Golding, Genette Ellis, Steven Gregory, Karen Birmingham, Yasmin Iles-Caven, Dheeraj Rai, Marcus Pembrey
Although there is considerable research into the genetic background of autism spectrum disorders, environmental factors are likely to contribute to the variation in prevalence over time. Rodent experiments indicate that environmental exposures can have effects on subsequent generations, and human studies indicate that parental prenatal exposures may play a part in developmental variation. Here we use the Avon Longitudinal Study of Parents and Children (ALSPAC) to test the hypothesis that if the mother or father (F1) had been exposed to their own mother's (F0) smoking during pregnancy, the offspring (F2) would be at increased risk of autism...
April 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28447541/sensor-array-for-detection-of-organic-and-inorganic-contaminants-in-post-consumer-recycled-plastics-for-food-contact
#8
Nathan Davis, Jeffery Danes, Keith Vorst
Post-consumer recycled (PCR) plastic material is made by collecting used plastic products (e.g., bottles and other plastic packaging materials) and re-processing them into solid-state pellets or flakes. Plastic recycling has positive environmental benefits, but may also carry potential drawbacks due to unwanted organic and inorganic contaminants. These contaminants can migrate into food packaging made from these recycled plastic materials. The purpose of this research was to identify economically viable real-time monitoring technologies that can be used during conversion of virgin and recycled resin feedstocks (i...
April 27, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28447316/mining-and-environmental-health-disparities-in-native-american-communities
#9
REVIEW
Johnnye Lewis, Joseph Hoover, Debra MacKenzie
PURPOSE OF REVIEW: More than a century of hard rock mining has left a legacy of >160,000 abandoned mines in the Western USA that are home to the majority of Native American lands. This article describes how abrogation of treaty rights, ineffective policies, lack of infrastructure, and a lack of research in Native communities converge to create chronic exposure, ill-defined risks, and tribal health concerns. RECENT FINDINGS: Recent results show that Native Americans living near abandoned uranium mines have an increased likelihood for kidney disease and hypertension, and an increased likelihood of developing multiple chronic diseases linked to their proximity to the mine waste and activities bringing them in contact with the waste...
April 26, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28447136/-environmental-health-relevance-of-airborne-microorganisms-in-ambient-and-indoor-air
#10
REVIEW
Sandra M Walser, Bernhard Brenner, Stefanie Heinze, Regine Szewzyk, Eike Wolter, Caroline E W Herr
Airborne microorganisms occur ubiquitously in the ambient air. Besides allergic and irritative-toxic effects, they can cause infections after inhalation. Occupational studies have shown that an increased incidence of respiratory diseases is found in adequately exposed workers. In addition to respiratory diseases, severe systemic infections can also occur in particular cases, such as in the case of a hantavirus infection that is recognized as an occupational disease. In studies from environmental medicine, respiratory diseases have also been observed in residents living in the vicinity of livestock facilities and evaporative cooling towers...
April 26, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28447134/-poisonings-in-germany-poisons-centres-medical-management-and-national-monitoring
#11
REVIEW
Herbert Desel, Helmut Hentschel, Andreas Stürer
BACKGROUND: Illnesses caused by exposure to extracorporeal artificial substances play a major role in emergency medicine, family medicine, and environmental medicine. OBJECTIVE: The current situation of medical poisoning management and national reporting of poisonings in Germany are described. MATERIALS UND METHODS: The information and data presented here are derived from a literature review and from stakeholder interviews. RESULTS AND CONCLUSION: Eight poison centres (PCs) offer consultation supporting the diagnosis and treatment of poisoning cases in Germany today...
April 26, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28447121/persistent-organic-pollutant-and-hormone-levels-in-harbor-porpoise-with-b-cell-lymphoma
#12
Stephanie A Norman, Zach C Winfield, Barry H Rickman, Sascha Usenko, Matthew Klope, Susan Berta, Sandra Dubpernell, Howard Garrett, Mary Jo Adams, Dyanna Lambourn, Jessica L Huggins, Nadine Lysiak, Adelaide E Clark, Rebel Sanders, Stephen J Trumble
B-cell lymphoma, a common morphologic variant of non-Hodgkin lymphoma, has been associated with persistent pollutants in humans, but this association is not well-characterized in top-level predators sharing marine resources with humans. We characterized and compared blubber contaminants and hormones of a pregnant harbor porpoise (Phocoena phocoena) with B-cell lymphoma, with those in two presumed healthy fishery by-caught porpoises with no lymphoma: a pregnant adult and female juvenile. Common historic use compounds, including polychlorinated biphenyls, polybrominated diphenyl ethers, and pesticides, were evaluated in blubber samples from three porpoises...
April 26, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28446783/a-common-neonicotinoid-pesticide-thiamethoxam-impairs-honey-bee-flight-ability
#13
Simone Tosi, Giovanni Burgio, James C Nieh
Pesticides can pose environmental risks, and a common neonicotinoid pesticide, thiamethoxam, decreases homing success in honey bees. Neonicotinoids can alter bee navigation, but we present the first evidence that neonicotinoid exposure alone can impair the physical ability of bees to fly. We tested the effects of acute or chronic exposure to thiamethoxam on the flight ability of foragers in flight mills. Within 1 h of consuming a single sublethal dose (1.34 ng/bee), foragers showed excitation and significantly increased flight duration (+78%) and distance (+72%)...
April 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28446737/pleural-mesothelioma-in-doll-manufacture-possible-asbestos-exposure
#14
Pietro Gino Barbieri, Anna Benedetta Somigliana, Sandra Lombardi, Roberto Festa, Roberto Girelli, Michela Sarnico
BACKGROUND: The occurrence of malignant mesothelioma is almost always causally associated to asbestos exposure but, considering women occurrences, this association is often difficult to demonstrate and consequently the asbestos exposure is defined as 'unknown'. OBJECTIVES: To describe the working activity and to give occupational asbestos exposure probability estimation related to an uncommon and poorly investigated productive sector: doll manufacture. METHODS: From the Province of Brescia Mesothelioma Registry, established in 1993 on population-based criteria, we have extracted the certified mesothelioma diagnosis cases, related to patients who were employed for some time in doll manufacture...
April 21, 2017: La Medicina del Lavoro
https://www.readbyqxmd.com/read/28445770/first-evidence-that-waterborne-methylphenidate-alters-endocrine-and-behavioral-stress-responses-in-zebrafish
#15
Helena Cristina Endres, João Gabriel da Rosa, Celestin Kabaselle, Heloisa Helena Barcellos, Charise Dallazem Bertol, Leonardo José Gil Barcellos, Luciana Grazziotin Rossato-Grando
Several studies have reported the presence of methylphenidate (MPH) in effluents; however, its impacts on aquatic life are not yet well understood. Here, we investigated the effects of acute exposure on endocrine and behavioral stress responses to environmentally relevant concentrations of MPH in zebrafish. We show that MPH blunts the response of cortisol to stress in zebrafish. On the other hand, MPH stresses fish per se. Additionally, MPH seems to modulate anxiety-like behaviors. We conclude that the presence of MPH in aquatic environments can alter neuroendocrine and behavior responses, which might considerably impact fish survival and welfare...
April 23, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28445208/toxic-keratoconjunctivitis
#16
Grace L Paley, Anthony J Lubniewski, James J Reidy, Asim V Farooq
Toxic keratoconjunctivitis (TK) is an underrecognized complication of ophthalmic drug use and various environmental or occupational exposures. A detailed history and clinical examination are important to identify the offending agent(s). Common drug-related causes of TK include preservatives in ophthalmic medications, topical antimicrobials, and topical anesthetics. Alternatives to benzalkonium chloride as well as preservative-free formulations should be considered in patients requiring long-term topical medication...
April 25, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28444573/the-effect-of-different-types-of-nanoparticles-on-fus-and-tdp-43-solubility-and-subcellular-localization
#17
Jasna Lojk, Sonja Prpar Mihevc, Vladimir Boštjan Bregar, Mojca Pavlin, Boris Rogelj
Increased environmental pollution has been suggested as one of the possible causes for increased incidence of neurodegenerative and developmental disorders. Through the environmental pollution, everyday consumer products and nanomedical applications, we are also exposed to various nanoparticles (NPs). Specific types of NPs have been shown to be able to cause neural damage in vivo through processes such as disruption of the blood-brain barrier, induction of neuroinflammation, increase in oxidative stress and protein aggregation...
April 25, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28444505/occupational-heat-stress-assessment-and-protective-strategies-in-the-context-of-climate-change
#18
Chuansi Gao, Kalev Kuklane, Per-Olof Östergren, Tord Kjellstrom
Global warming will unquestionably increase the impact of heat on individuals who work in already hot workplaces in hot climate areas. The increasing prevalence of this environmental health risk requires the improvement of assessment methods linked to meteorological data. Such new methods will help to reveal the size of the problem and design appropriate interventions at individual, workplace and societal level. The evaluation of occupational heat stress requires measurement of four thermal climate factors (air temperature, humidity, air velocity and heat radiation); available weather station data may serve this purpose...
April 25, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28444299/environmental-factors-associated-with-disease-flare-in-juvenile-and-adult-dermatomyositis
#19
Gulnara Mamyrova, Lisa G Rider, Alison Ehrlich, Olcay Jones, Lauren M Pachman, Robert Nickeson, Lisa G Criscone-Schreiber, Lawrence K Jung, Frederick W Miller, James D Katz
Objective.: The aim was to assess environmental factors associated with disease flare in juvenile and adult dermatomyositis (DM). Methods.: An online survey of DM patients from the USA and Canada examined smoking, sun exposure, infections, medications, vaccines, stressful life events and physical activity during the 6 months before flares, or in the past 6 months in patients without flares. Differences were evaluated by χ 2 and Fisher's exact tests, and significant univariable results were examined in multivariable logistic regression...
April 21, 2017: Rheumatology
https://www.readbyqxmd.com/read/28444119/spatial-variability-in-adhd-related-behaviors-among-children-born-to-mothers-residing-near-the-new-bedford-harbor-superfund-site
#20
Verónica M Vieira, M Patricia Fabian, Thomas F Webster, Jonathan I Levy, Susan A Korrick
Attention-deficit/hyperactivity disorder (ADHD) has an uncertain etiology, with potential contributions from different risk factors such as prenatal environmental exposure to organochlorines and metals, social risk factors, and genetics. The degree to which geographic variability in ADHD is independent of, or explained by, risk factors may provide etiological insight. We investigated determinants of geographic variation in ADHD-related behaviors among children living near the polychlorinated biphenyl-contaminated New Bedford Harbor (NBH) Superfund site in Massachusetts...
April 24, 2017: American Journal of Epidemiology
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