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https://www.readbyqxmd.com/read/29457603/the-hearing-of-rural-workers-exposed-to-noise-and-pesticides
#1
Tereza R R Sena, Solano S F Dourado, Lucas V Lima, Ângelo R Antoniolli
n work environments, different physical and chemical agents that may pose a risk to workers' hearing health coexist. In this context, occupational hearing loss stands out. It has mostly been attributed to only noise exposure, although there are other agents, that is, pesticides that might contribute to occupational hearing loss. In this report, two cases will be presented that consider rural workers exposed to pesticides and intense noise generated by an adapted rudimentary vehicle. The noise measured in this vehicle was 88...
January 2018: Noise & Health
https://www.readbyqxmd.com/read/29456272/political-ecologies-of-global-health-pesticide-exposure-in-southwestern-ecuador-s-banana-industry
#2
Ben Wesley Brisbois, Leila Harris, Jerry M Spiegel
Pesticide exposure in Ecuador's banana industry reflects political economic and ecological processes that interact across scales to affect human health. We use this case study to illustrate opportunities for applying political ecology of health scholarship in the burgeoning field of global health. Drawing on an historical literature review and ethnographic data collected in Ecuador's El Oro province, we present three main areas where a political ecological approach can enrich global health scholarship: perceptive characterization of multi-scalar and ecologically entangled pathways to health outcomes; critical analysis of discursive dynamics such as competing scalar narratives; and appreciation of the environment-linked subjectivities and emotions of people experiencing globalized health impacts...
January 2018: Antipode
https://www.readbyqxmd.com/read/29454282/contaminants-of-emerging-concern-presence-and-adverse-effects-in-fish-a-case-study-in-the-laurentian-great-lakes
#3
Zachary G Jorgenson, Linnea M Thomas, Sarah M Elliott, Jenna E Cavallin, Eric C Randolph, Steven J Choy, David A Alvarez, Jo A Banda, Daniel J Gefell, Kathy E Lee, Edward T Furlong, Heiko L Schoenfuss
The Laurentian Great Lakes are a valuable natural resource that is affected by contaminants of emerging concern (CECs), including sex steroid hormones, personal care products, pharmaceuticals, industrial chemicals, and new generation pesticides. However, little is known about the fate and biological effects of CECs in tributaries to the Great Lakes. In the current study, 16 sites on three rivers in the Great Lakes basin (Fox, Cuyahoga, and Raquette Rivers) were assessed for CEC presence using polar organic chemical integrative samplers (POCIS) and grab water samplers...
February 14, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29453181/fish-consumption-from-urban-impoundments-what-are-the-health-risks-associated-with-ddts-and-other-organochlorine-pesticides-in-fish-to-township-residents-of-a-major-inland-city
#4
Wihan Pheiffer, Nico J Wolmarans, Ruan Gerber, Yared B Yohannes, Yoshinori Ikenaka, Mayumi Ishizuka, Nico J Smit, Victor Wepener, Rialet Pieters
Organochlorine pesticides (OCPs) in South Africa have for the most part been banned, except dichlorodiphenyltrichloroethane (DDT) which is still used as malaria vector control. The aim of this study was to determine OCP residues in the aquatic fauna of one of South Africa's most populated areas, Soweto. Risk to human health through OCP exposure via fish consumption was investigated. Clarias gariepinus was chosen as bioindicator because it is an apex predator that is in abundance, but is also a valued food source...
February 13, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29452251/using-in-vitro-derived-enzymatic-reaction-rates-of-metabolism-to-inform-pesticide-body-burdens-in-amphibians
#5
Donna A Glinski, W Matthew Henderson, Robin J Van Meter, S Thomas Purucker
Understanding how pesticide exposure to non-target species influences toxicity is necessary to accurately assess the ecological risks these compounds pose. To assess the potential metabolic activation of broad use pesticides in amphibians, in vitro and in vivo metabolic rate constants were derived from toad (Anaxyrus terrestris) livers in experiments measuring the depletion of atrazine (ATZ), triadimefon (TDN), and fipronil (FIP) as well as formation of their metabolites. To determine the predictability of these in vitro derived rate constants, Fowler's toads (Anaxyrus fowleri) were exposed to soil contaminated with each of the pesticides at maximum application rate...
February 13, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29450776/modulatory-role-of-gstt1-and-gstm1-in-punjabi-agricultural-workers-exposed-to-pesticides
#6
Meenakshi Ahluwalia, Anupam Kaur
Glutathione S-transferases are important detoxification enzymes involved in the metabolism of endogenous as well as exogenous compounds. Individuals differ in metabolic capacity due to inherited genetic variations. Due to the polymorphism exhibited by GSTT1 and GSTM1 that results in the complete loss of function, the present study was aimed towards the determination of the frequency distribution of GSTT1 and GSTM1 in agricultural workers in Punjab, India. The study aimed to investigate their contribution in susceptibility to increased disease risk...
February 15, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29449485/volatile-chemical-products-emerging-as-largest-petrochemical-source-of-urban-organic-emissions
#7
Brian C McDonald, Joost A de Gouw, Jessica B Gilman, Shantanu H Jathar, Ali Akherati, Christopher D Cappa, Jose L Jimenez, Julia Lee-Taylor, Patrick L Hayes, Stuart A McKeen, Yu Yan Cui, Si-Wan Kim, Drew R Gentner, Gabriel Isaacman-VanWertz, Allen H Goldstein, Robert A Harley, Gregory J Frost, James M Roberts, Thomas B Ryerson, Michael Trainer
A gap in emission inventories of urban volatile organic compound (VOC) sources, which contribute to regional ozone and aerosol burdens, has increased as transportation emissions in the United States and Europe have declined rapidly. A detailed mass balance demonstrates that the use of volatile chemical products (VCPs)-including pesticides, coatings, printing inks, adhesives, cleaning agents, and personal care products-now constitutes half of fossil fuel VOC emissions in industrialized cities. The high fraction of VCP emissions is consistent with observed urban outdoor and indoor air measurements...
February 16, 2018: Science
https://www.readbyqxmd.com/read/29448871/interactions-of-organophosphorus-pesticides-with-solute-carrier-slc-drug-transporters
#8
Lisa Chedik, Arnaud Bruyere, Olivier Fardel
1. Organophosphorus pesticides (OPs) are known to interact with human ATP-binding cassette drug efflux pumps. The present study was designed to determine whether they can also target activities of human solute carrier (SLC) drug transporters. 2. The interactions of thirteen OPs with SLC transporters involved in drug disposition, such as organic cation transporters (OCTs), multidrug and toxin extrusion proteins (MATEs), organic anion transporters (OATs) and organic anion transporting polypeptides (OATPs), were mainly investigated using transporter-overexpressing cell clones and fluorescent or radiolabeled reference substrates...
February 16, 2018: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/29446158/a-neuroscience-perspective-of-the-gut-theory-of-parkinson-s-disease
#9
Lisa M Smith, Louise C Parr-Brownlie
Parkinson's disease is caused by complex interactions between environmental factors and a genetic predisposition. Environmental factors include exposure to pesticides and toxins, heavy metals and accumulation of iron and/or manganese in the brain. However, accumulating evidence indicates that gut-brain health and function is impaired in Parkinson's disease, often a decade before motor symptoms are diagnosed. We present the gut-brain theory of Parkinson's disease and summarise the peripheral and central nervous system pathology, gastrointestinal symptoms experienced by many Parkinson's patients, the route by which gut-brain dysfunction may occur, and changes in gut microbiota that are associated with disease expression...
February 15, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29445624/dioxin-exposure-in-the-manufacture-of-pesticide-production-as-a-risk-factor-for-death-from-prostate-cancer-a-meta-analysis
#10
REVIEW
Ali Kabir, Rezvan Zendehdel, Raana Tayefeh-Rahimian
Background: In pesticide exposure groups such as farmers, the risk of prostate cancer was increased, although the report of the cause of evidence is limited. We selected chlorophenol compounds as an important group of the contaminated pesticide with highly toxic 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin (TCDD). This meta-analysis, the risk of death from prostate cancer was analyzed. Methods: PubMed, Scopus, Scholar Google and web of Sciences until 2016 were searched...
February 2018: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/29445108/individual-and-combined-effects-of-herbicide-tribenuron-methyl-and-fungicide-tebuconazole-on-soil-earthworm-eisenia-fetida
#11
Jiqiang Chen, Muhammad Saleem, Caixia Wang, Wenxing Liang, Qingming Zhang
Earthworms are soil engineers that alter the soil bio-physical properties to favor plant growth whereas pesticides represent a significant threat to their abundance and soil health. Thus, we investigated the toxic effects of tribenuron-methyl (TBM) and tebuconazole (TEB) on the soil earthworm, Eisenia fetida. The TBM demonstrated low toxicity to E. fetida in the contact filter paper and artificial soil tests, with median lethal concentrations (LC 50 ) of 135.6 μg cm -2 at 48 h and 511 mg kg -1 on day 14, respectively...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29444637/estimated-assessment-of-cumulative-dietary-exposure-to-organophosphorus-residues-from-tea-infusion-in-china
#12
Pei Cao, Dajin Yang, Jianghui Zhu, Zhaoping Liu, Dingguo Jiang, Haibin Xu
BACKGROUND: China has the world's largest tea plantation area in the world. To sustain high yields of the tea, multiple pesticides are used on tea crops to control pests. Organophosphorus (OP) pesticides are among the most widely used types of agricultural pesticides in China. As tea is a significant potential source of exposure to pesticide residues, the public concern has increased in relation to pesticide residues found in tea in China. The aim of the study was to estimate cumulative dietary exposure to OP residues from tea infusion for Chinese tea consumers to determine whether exposure to OP residues from tea infusion is a cause of health concern for tea consumers in China...
February 14, 2018: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29444570/pyrethroid-pesticide-exposure-and-risk-of-primary-ovarian-insufficiency-in-chinese-women
#13
Chunming Li, Miaofeng Cao, Linjuan Ma, Xiaoqing Ye, Yang Song, Wuye Pan, Zhengfen Xu, Xiaochen Ma, Yibing Lan, Peiqiong Chen, Weiping Liu, Jing Liu, Jianhong Zhou
Pyrethroids are a class of widely used insecticides. Female animal studies suggested that pyrethroid exposure impaired ovarian function, which resulted in similar symptoms of primary ovarian insufficiency (POI). However, it is still unknown whether this association applies to women. In this case-control study, a total of 172 POI patients and 247 control women were recruited in Zhejiang, China. The urinary concentrations of metabolites of pyrethroids, 3-phenoxybenzoic acid (3-PBA) and 4-fluoro-3-phenoxybenzoic acid (4-F-3-PBA), as well as the serum concentrations of follicle-stimulating hormone (FSH), luteinizing hormone (LH) and anti-Mullerian hormone (AMH) were determined...
February 15, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29435616/the-response-of-lemna-minor-to-mixtures-of-pesticides-that-are-commonly-used-in-thailand
#14
Rungnapa Tagun, Alistair B A Boxall
In the field, aquatic organisms are exposed to multiple contaminants rather than to single compounds. It is therefore important to understand the toxic interactions of co-occurring substances in the environment. The aim of the study was to assess the effects of individual herbicides (atrazine, 2,4-D, alachlor and paraquat) that are commonly used in Thailand and their mixtures on Lemna minor. Plants were exposed to individual and binary mixtures for 7 days and the effects on plant growth rate were assesed based on frond area measurements...
February 13, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29434093/peripubertal-exposure-to-the-neonicotinoid-pesticide-dinotefuran-affects-dopaminergic-neurons-and-causes-hyperactivity-in-male-mice
#15
Naoki Yoneda, Tadashi Takada, Tetsushi Hirano, Shogo Yanai, Anzu Yamamoto, Youhei Mantani, Toshifumi Yokoyama, Hiroshi Kitagawa, Yoshiaki Tabuchi, Nobuhiko Hoshi
Although neonicotinoid pesticides are expected to have harmful influence on mammals, there is little animal experimental data to support the effect and mechanisms. Since acetylcholine causes the release of dopamine, neonicotinoids may confer a risk of developmental disorders via a disturbance in the monoamine systems. Male mice were peripubertally administered dinotefuran (DIN) referring to no observed effect level (NOEL) and performed behavioral and immunohistological analyses. In an open field test, the total locomotor activity was increased in a dose-dependent manner...
February 9, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29432309/maternal-exposure-to-pesticides-paternal-occupation-in-the-army-police-force-and-cyp2d6-4-polymorphism-in-the-etiology-of-childhood-acute-leukemia
#16
Giovanni M Ferri, Chiara M Guastadisegno, Graziana Intranuovo, Domenica Cavone, Francesco Birtolo, Valerio Cecinati, Brigida Pappalardi, Patrizia Corsi, Luigi Vimercati, Nicola Santoro
Epidemiologic studies have suggested that parental occupations, pesticide use, environmental factors, and genetic polymorphism are involved in the etiology of childhood acute leukemia (CAL). In total, 116 cases of CAL and 162 controls were recruited and submitted to blood drawing to assess the presence of genetic polymorphisms. Parental occupations, pesticides exposure, and other potential determinants were investigated. Increased risk for CAL was associated with prenatal maternal use of insecticides/rodenticides (odds ratio [OR]=1...
February 9, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29427810/developmental-toxicity-and-neurotoxicity-of-synthetic-organic-insecticides-in-zebrafish-danio-rerio-a-comparative-study-of-deltamethrin-acephate-and-thiamethoxam
#17
XingYu Liu, QiuPing Zhang, ShiBao Li, Ping Mi, DongYan Chen, Xin Zhao, XiZeng Feng
Synthetic organic insecticides, including pyrethroids, organophosphates, neonicotinoids and other types, have the potential to alter the ecosystems and many are harmful to humans. This study examines the developmental toxicity and neurotoxicity of three synthetic organic insecticides, including deltamethrin (DM), acephate (AP), and thiamethoxam (TM), using embryo-larval stages of zebrafish (Danio rerio). Results showed that DM exposure led to embryo development delay and a significant increase in embryo mortality at 24 and 48 h post-fertilization (hpf)...
February 7, 2018: Chemosphere
https://www.readbyqxmd.com/read/29423537/short-term-exposure-to-lambda-cyhalothrin-negatively-affects-the-survival-and-memory-related-characteristics-of-worker-bees-apis-mellifera
#18
Chun-Hua Liao, Xu-Jiang He, Zi-Long Wang, Andrew B Barron, Bo Zhang, Zhi-Jiang Zeng, Xiao-Bo Wu
Pesticides are considered one of the major contemporary stressors of honey bee health. In this study, the effects of short-term exposure to lambda-cyhalothrin on lifespan, learning, and memory-related characteristics of Apis mellifera were systematically examined. Short-term exposure to lambda-cyhalothrin in worker bees reduced lifespan, affected learning and memory performance, reduced the homing ability, and influenced the expression levels of two learning and memory-related genes of A. mellifera. This research identifies the nature of the sublethal effects of lambda-cyhalothrin on bees and the level of exposure that can be harmful to bee health...
February 8, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29421768/developmental-neurotoxicity-in-the-progeny-after-maternal-gavage-with-chlorpyrifos
#19
Bérengère Laporte, Jérôme Gay-Quéheillard, Véronique Bach, Anne-Sophie Villégier
Today, developmental intellectual disorders affect one out of six children in industrialised countries. Intensively used in agriculture, the neurotoxicant pesticide chlorpyrifos (CPF) is known for its environmental persistence and bioaccumulation. Its role has not yet been established in the aetiology of intellectual impairments. Here we assessed whether maternal ingestion of low CPF dose in rats could impair the cerebral function of their progeny. Rat dams received daily CPF exposures (1 mg/kg, per os) during gestation and lactation...
January 25, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29421401/association-between-prenatal-exposure-to-multiple-insecticides-and-child-body-weight-and-body-composition-in-the-vhembe-south-african-birth-cohort
#20
Eric Coker, Jonathan Chevrier, Stephen Rauch, Asa Bradman, Muvhulawa Obida, Madelein Crause, Riana Bornman, Brenda Eskenazi
BACKGROUND: Pregnant women may be co-exposed to multiple insecticides in regions where both pyrethroids and dichlorodiphenyltrichloroethane (DDT) are used for indoor residual spraying (IRS) for malaria control. Despite the potential for adverse effects on offspring, there are few studies in areas where IRS is currently used and little is known about the effects of pyrethroids on children's health. METHODS: We investigated the relationship between concentrations of four urinary pyrethroid metabolites in urine and organochlorine pesticide concentrations in maternal blood collected near delivery on body weight and body composition among children ≤2 years old participating in the prospective South Africa VHEMBE birth cohort (N = 708)...
February 1, 2018: Environment International
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