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https://www.readbyqxmd.com/read/28431387/cypermethrin-toxication-leads-to-histopathological-lesions-and-induces-inflammation-and-apoptosis-in-common-carp-cyprinus-carpio-l
#1
Harun Arslan, Selçuk Özdemir, Serdar Altun
Cypermethrin (Cyp), a known neurotoxic pesticide, is widely used in agricultural applications. In the present study, the aim was to determine the histopathological effects of Cyp toxication and evaluate the activation of inducible nitric oxide synthetase (iNOS) and 8-hydroxy-2-deoxyguanosine (8-OHdG) using an immunofluorescence assay. Thereafter, we identified the expressions of caspase 3, capsase 8, iNOS, and metallothionein 1 (MT1) genes in common carp using quantitative reverse transcription polymerase chain reaction (qRT-PCR)...
April 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28430419/prediction-of-hydrolysis-products-of-organic-chemicals-under-environmental-ph-conditions
#2
Caroline Tebes-Stevens, Jay M Patel, W Jack Jones, Eric J Weber
Cheminformatics-based software tools can predict the molecular structure of transformation products using a library of transformation reaction schemes. This paper presents the development of such a library for abiotic hydrolysis of organic chemicals under environmentally relevant conditions. The hydrolysis reaction schemes in the library encode the process science gathered from peer-reviewed literature and regulatory reports. Each scheme has been ranked on a scale of one to six based on the median half-life in a data set compiled from literature-reported hydrolysis rates...
April 21, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28428846/long-term-and-widespread-changes-in-agricultural-practices-influence-ring-necked-pheasant-abundance-in-california
#3
Peter S Coates, Brianne E Brussee, Kristy B Howe, Joseph P Fleskes, Ian A Dwight, Daniel P Connelly, Matt G Meshriy, Scott C Gardner
Declines in bird populations in agricultural regions of North America and Europe have been attributed to agricultural industrialization, increases in use of agrochemical application, and increased predation related to habitat modification. Based on count data compiled from Breeding Bird Survey (BBS) from 1974 to 2012, Christmas Bird Count (CBC) collected from 1914 to 2013, and hunter data from Annual Game Take Survey (AGTS) for years 1948-2010, ring-necked pheasants (Phasianus colchicus) in California have experienced substantial declines in agricultural environments...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28428563/a-sublethal-dose-of-a-neonicotinoid-insecticide-disrupts-visual-processing-and-collision-avoidance-behaviour-in-locusta-migratoria
#4
Rachel H Parkinson, Jacelyn M Little, John R Gray
Neonicotinoids are known to affect insect navigation and vision, however the mechanisms of these effects are not fully understood. A visual motion sensitive neuron in the locust, the Descending Contralateral Movement Detector (DCMD), integrates visual information and is involved in eliciting escape behaviours. The DCMD receives coded input from the compound eyes and monosynaptically excites motorneurons involved in flight and jumping. We show that imidacloprid (IMD) impairs neural responses to visual stimuli at sublethal concentrations, and these effects are sustained two and twenty-four hours after treatment...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428152/convenience-food-with-environmentally-sustainable-attributes-a-consumer-perspective
#5
Stefanella Stranieri, Elena Claire Ricci, Alessandro Banterle
The use of chemicals in agriculture poses risks on both human health and the environment. Regulatory measures, both mandatory and voluntary, have been introduced to promote a reduction in the use of pesticides. The proliferation of such standards is related to the gradual shift of consumer preferences towards foods with reduced negative health and environmental impacts. Beside consumer demand for sustainable food products, convenience foods are also assuming an increasingly important role in developed countries...
April 17, 2017: Appetite
https://www.readbyqxmd.com/read/28427415/insecticide-resistance-patterns-in-uganda-and-the-effect-of-indoor-residual-spraying-with-bendiocarb-on-kdr-l1014s-frequencies-in-anopheles-gambiae-s-s
#6
Tarekegn A Abeku, Michelle E H Helinski, Matthew J Kirby, James Ssekitooleko, Chris Bass, Irene Kyomuhangi, Michael Okia, Godfrey Magumba, Sylvia R Meek
BACKGROUND: Resistance of malaria vectors to pyrethroid insecticides has been attributed to selection pressure from long-lasting insecticidal nets (LLINs), indoor residual spraying (IRS), and the use of chemicals in agriculture. The use of different classes of insecticides in combination or by rotation has been recommended for resistance management. The aim of this study was to understand the role of IRS with a carbamate insecticide in management of pyrethroid resistance. METHODS: Anopheles mosquitoes were collected from multiple sites in nine districts of Uganda (up to five sites per district)...
April 20, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28426952/plant-viruses-and-bacteriophages-for-delivery-in-medicine-and-biotechnology
#7
REVIEW
Anna E Czapar, Nicole F Steinmetz
There are a wide variety of synthetic and naturally occurring nanomaterials under development for nanoscale cargo-delivery applications. Viruses play a special role in these developments, because they can be regarded as naturally occurring nanomaterials evolved to package and deliver cargos. While any nanomaterial has its advantage and disadvantages, viral nanoparticles (VNPs), in particular the ones derived from plant viruses and bacteriophages, are attractive options for cargo-delivery as they are biocompatible, biodegradable, and non-infectious to mammals...
April 17, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/28426177/an-efficient-cleanup-method-coupled-with-gas-chromatography-and-mass-spectrometry-for-multi-pesticides-residue-analysis-in-complex-plant-matrices
#8
Xinquan Wang, Peipei Qi, Xiangyun Wang, Qian Zhang, Zhiwei Wang, Xiahong Xu, Hao Xu, Hu Zhang, Qiang Wang
We aimed to develop an efficient cleanup method for multi-pesticides residue analysis in complex plant matrices, shallot, ginger, garlic, onion, leek and celery. Column chromatography was used as the cleanup method and fabricated with florisil and graphitized carbon black as the adsorbents. The amount of the graphitized carbon black adsorbent and the choice of the elution solvent were systematically investigated for exploring the best combination. The target pesticides covered organochlorine, pyrethroid and organophosphorus pesticides, and were 38 in total...
April 20, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28425441/methyl-parathion-detection-in-vegetables-and-fruits-using-silver-graphene-nanoribbons-nanocomposite-modified-screen-printed-electrode
#9
Mani Govindasamy, Veerappan Mani, Shen-Ming Chen, Tse-Wei Chen, Ashok Kumar Sundramoorthy
We have developed a sensitive electrochemical sensor for Organophosphorus pesticide methyl parathion (MP) using silver particles supported graphene nanoribbons (Ag@GNRs). The Ag@GNRs nanocomposite was prepared through facile wet chemical strategy and characterized by TEM, EDX, XRD, Raman, UV-visible, electrochemical and impedance spectroscopies. The Ag@GNRs film modified screen printed carbon electrode (SPCE) delivers excellent electrocatalytic ability to the reduction of MP. The Ag@GNRs/SPCE detects sub-nanomolar concentrations of MP with excellent selectivity...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28424956/removal-of-selected-pesticides-from-groundwater-by-membrane-distillation
#10
Julia Plattner, Christian Kazner, Gayathri Naidu, Thomas Wintgens, Saravanamuthu Vigneswaran
The removal of five selected pesticide compounds in a brackish model groundwater solution was examined using a bench scale direct contact membrane distillation (DCMD) system. It was found that the rejection rate of the pesticides in DCMD is mainly influenced by its properties. Compounds with low hydrophobic characteristics and low vapour pressure showed a high rejection rate (70-99%), whereas compounds with a high vapour pressure or high hydrophobicity (LogD) showed a reduced rejection (30-50%) at a water recovery of 75%...
April 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28423417/multi-species-mating-disruption-in-cranberries-ericales-ericaceae-early-evidence-using-a-flowable-emulsion
#11
Shawn A Steffan, Elissa M Chasen, Annie E Deutsch, Agenor Mafra-Neto
Pheromone-based mating disruption has proven to be a powerful pest management tactic in many cropping systems. However, in the cranberry system, a viable mating disruption program does not yet exist. There are commercially available pheromones for several of the major pests of cranberries, including the cranberry fruitworm, Acrobasis vaccinii Riley (Lepidoptera: Pyralidae) and blackheaded fireworm, Rhopobota naevana (Hübner) (Lepidoptera: Tortricidae). Previous studies have shown that mating disruption represents a promising approach for R...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28422284/is-a-larger-refuge-always-better-dispersal-and-dose-in-pesticide-resistance-evolution
#12
Daisuke Takahashi, Takehiko Yamanaka, Masaaki Sudo, David A Andow
The evolution of resistance against pesticides is an important problem of modern agriculture. The high-dose/refuge strategy, which divides the landscape into treated and non-treated (refuge) patches, has proven effective at delaying resistance evolution. However, theoretical understanding is still incomplete, especially for combinations of limited dispersal and partially recessive resistance. We reformulate a two-patch model based on the Comins model and derive a simple quadratic approximation to analyze the effects of limited dispersal, refuge size and dominance for high efficacy treatments on the rate of evolution...
April 19, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28422139/high-pesticide-risk-to-honey-bees-despite-low-focal-crop-pollen-collection-during-pollination-of-a-mass-blooming-crop
#13
Scott H McArt, Ashley A Fersch, Nelson J Milano, Lauren L Truitt, Katalin Böröczky
Honey bees provide critical pollination services for many agricultural crops. While the contribution of pesticides to current hive loss rates is debated, remarkably little is known regarding the magnitude of risk to bees and mechanisms of exposure during pollination. Here, we show that pesticide risk in recently accumulated beebread was above regulatory agency levels of concern for acute or chronic exposure at 5 and 22 of the 30 apple orchards, respectively, where we placed 120 experimental hives. Landscape context strongly predicted focal crop pollen foraging and total pesticide residues, which were dominated by fungicides...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421825/seizures-in-patients-with-acute-pesticide-intoxication-with-a-focus-on-glufosinate-ammonium
#14
S Park, D E Kim, S Y Park, H W Gil, S Y Hong
The incidence and clinical aspects of seizures remain to be elucidated in patients with acute pesticide intoxication. The present study included subjects who ingested pesticide with the intention of committing suicide and were treated at Soonchunhyang University Hospital (Cheonan, Korea) between January 2011 and December 2014. We analyzed the incidence and characterized the type and frequency of seizure, from the medical records of 464 patients with acute pesticide intoxication, according to the pesticide class...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28421253/levels-and-sources-of-organochlorine-pesticides-in-surface-sediment-from-anhui-reach-of-huaihe-river-china
#15
Chunnian Da, Ke Wu, Jie Jin, Minjun Yu
Twenty-two organochlorine pesticides (OCPs) were investigated in Anhui reach of Huaihe river, China. Seventeen out of 22 OCPs were detected by GC-MS. The mean concentrations of OCPs followed the order: HCHs > DDTs > HCB > chlordanes > endosulfans. Levels of total HCHs and total DDTs ranged from 2.54 to 13.91 ng g(-1) (mean = 7.52 ng g(-1)) and 0.016 to 2.54 ng g(-1) (mean = 0.45 ng g(-1)), respectively. The concentrations of DDTs were lower than those of HCHs. Compared with the other rivers in China, DDTs and HCHs were relatively lower or similar...
April 18, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28421252/altitude-distributions-and-source-analysis-of-ocps-and-pcbs-in-surface-soils-of-changbai-mountain-northeast-china
#16
Xiaochun Wang, Shu Chen, Kuiyuan Wan, Xiaocai Yin, Xiaohua Zhu, Jing Pan, Yongliang Yang
Organochlorine pesticides and polychlorinated biphenyls in surface soils of Changbai Mountain, Northeastern China, have been quantified by gas chromatography with electron capture detector and the altitude distributions and possible pollution sources were analyzed. The concentrations of ∑HCHs, ∑DDTs and ∑7PCBs were in the range of 3.09-25.6, 0.96-19.4 and 7.32-26.1 ng/g dw, respectively. The concentration of α-HCH, β-HCH, p,p'-DDT, p,p'-DDE, PCB 101, 138, 153, and 180 showed increasing trends with altitude...
April 18, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28421040/isolation-and-molecular-characterization-of-novel-chlorpyrifos-and-3-5-6-trichloro-2-pyridinol-degrading-bacteria-from-sugarcane-farm-soils
#17
Smriti Rayu, Uffe N Nielsen, Loïc Nazaries, Brajesh K Singh
Chlorpyrifos (CP) is one of the most widely used organophosphate pesticides in agriculture worldwide, but its extensive use has led to the contamination of various soil and water systems. Microbial bioremediation is considered to be one of the most viable options for the removal of CP from the environment; however, little is known about the soil bacterial diversity that degrade CP. Sequential soil and liquid culture enrichments enabled the isolation of bacterial CP degraders with sequence homologies to Xanthomonas sp...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28420543/serum-persistent-organic-pollutants-pops-and-prostate-cancer-risk-a-case-cohort-study
#18
Jung-Eun Lim, Chungmo Nam, Jiyeon Yang, Koon Ho Rha, Kyung-Min Lim, Sun Ha Jee
It is still unclear whether persistent organic pollutants (POPs) exposure increases the prostate cancer incidence risk. This prospective cohort study evaluated the associations between serum POPs concentrations and prostate cancer risk. Within a case-cohort study, we identified 110 people diagnosed with prostate cancer and randomly selected 256 sub-cohort participants without prostate cancer. Serum concentrations of 32 polychlorinated biphenyl (PCB) congeners and 19 organochlorine pesticides (OCPs) were measured...
April 10, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28419951/can-fractal-methods-applied-to-video-tracking-detect-the-effects-of-deltamethrin-pesticide-or-mercury-on-the-locomotion-behavior-of-shrimps
#19
Bruno Mendes Tenorio, Eurípedes Alves da Silva Filho, Gentileza Santos Martins Neiva, Valdemiro Amaro da Silva, Fernanda das Chagas Angelo Mendes Tenorio, Themis de Jesus da Silva, Emerson Carlos Soares E Silva, Romildo de Albuquerque Nogueira
Shrimps can accumulate environmental toxicants and suffer behavioral changes. However, methods to quantitatively detect changes in the behavior of these shrimps are still needed. The present study aims to verify whether mathematical and fractal methods applied to video tracking can adequately describe changes in the locomotion behavior of shrimps exposed to low concentrations of toxic chemicals, such as 0.15µgL(-1) deltamethrin pesticide or 10µgL(-1) mercuric chloride. Results showed no change after 1min, 4, 24, and 48h of treatment...
April 15, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28418778/parkinsonism-signs-and-symptoms-in-agricultural-pesticide-handlers-in-washington-state
#20
Susan Searles Nielsen, Shu-Ching Hu, Harvey Checkoway, Maria Negrete, Pablo Palmández, Theresa Bordianu, Brad A Racette, Christopher D Simpson
OBJECTIVES: Examine associations between pesticide exposure and signs or symptoms of parkinsonism. METHODS: Prior to the 2014 pesticide spray season we examined 38 active pesticide handlers age 35-65 (median 43.5) who participated in the State of Washington's cholinesterase monitoring program in the Yakima Valley, where cholinesterase-inhibiting insecticides are applied in fruit orchards. A movement disorders specialist assessed the workers using the Unified Parkinson's Disease Rating Scale (UPDRS) motor subscore 3 (UPDRS3)...
April 18, 2017: Journal of Agromedicine
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