keyword
MENU ▼
Read by QxMD icon Read
search

Pesticide exposure

keyword
https://www.readbyqxmd.com/read/28437652/review-of-take-home-pesticide-exposure-pathway-in-children-living-in-agricultural-areas
#1
REVIEW
Carly Hyland, Ouahiba Laribi
BACKGROUND: Children of farmworkers may be chronically exposed to pesticides via the take-home exposure pathway. OBJECTIVE: The goal of this review was to analyze scientific literature evaluating the role of the take-home pesticide exposure pathway in children of agricultural workers. METHODS: A systematic review was undertaken and inclusion criteria were applied to identify original articles of interest. Of the 30 articles included in this review, some belonged to the same studies, resulting in a total of 23 studies...
April 21, 2017: Environmental Research
https://www.readbyqxmd.com/read/28435029/activity-of-carboxylesterases-glutathione-s-transferase-and-monooxygenase-on-rhipicephalus-microplus-exposed-to-fluazuron
#2
Fabrício Nascimento Gaudêncio, Guilherme Marcondes Klafke, Vinícius Menezes Tunholi-Alves, Thaís Paes Ferreira, Cristiane Nunes Coelho, Adivaldo Henrique da Fonseca, Isabele da Costa Angelo, Jairo Pinheiro
The objective of this study was to assess the effect of the exposure to fluazuron on the activity of common pesticide detoxification enzyme groups in the cattle tick (Rhipicephalus microplus). Engorged females of a susceptible strain (POA) and a resistant strain (Jaguar) were exposed in vitro to fluazuron and their eggs and larvae were used to compare the activities of the general esterases, mixed-function oxidases (MFO) and glutathione-S-transferase (GST). The results showed significant elevation in MFO contents and esterases activity in the resistant strain when compared with the susceptible strain, in eggs and larvae respectively...
April 20, 2017: Parasitology International
https://www.readbyqxmd.com/read/28433638/metabolomic-analysis-for-combined-hepatotoxicity-of-chlorpyrifos-and-cadmium-in-rats
#3
Ming-Yuan Xu, Pan Wang, Ying-Jian Sun, Yi-Jun Wu
Pesticides and heavy metals are widespread environmental pollutants. Although the acute toxicity of organophosphorus pesticide chlorpyrifos (CPF) and toxic heavy metal cadmium (Cd) is well characterized, the combined toxicity of CPF and Cd, especially the hepatotoxicity of the two chemicals with long-term exposure at a low dose, remained unclear. In this study, we investigated the toxicity in the liver of rats upon subchronic exposure to CPF and Cd at environmentally relevant doses. Rats were given three different doses (1/135 LD50, 1/45 LD50 and 1/15 LD50) of CPF and Cd as well as their mixtures by oral gavage for 90 days...
April 19, 2017: Toxicology
https://www.readbyqxmd.com/read/28433596/effects-of-diuron-and-carbofuran-and-their-mixtures-on-the-microalgae-raphidocelis-subcapitata
#4
Adrislaine S Mansano, Raquel A Moreira, Hugo C Dornfeld, Emanuela C Freitas, Eny M Vieira, Hugo Sarmento, Odete Rocha, Mirna H R Seleghim
In aquatic environments, organisms are often exposed to mixtures of several pesticides. In this study, the effects of carbofuran and diuron and their mixtures on the microalgae Raphidocelis subcapitata were investigated. For this purpose, toxicity tests were performed with the single compounds (active ingredients and commercial formulations) and their combinations (only active ingredients). According to the results, the toxicity of active ingredients and their commercial formulations to R. subcapitata was similar...
April 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28433595/effects-of-chlorpyrifos-on-soil-carboxylesterase-activity-at-an-aggregate-size-scale
#5
Juan C Sanchez-Hernandez, Marco Sandoval
The impact of pesticides on extracellular enzyme activity has been mostly studied on the bulk soil scale, and our understanding of the impact on an aggregate-size scale remains limited. Because microbial processes, and their extracellular enzyme production, are dependent on the size of soil aggregates, we hypothesized that the effect of pesticides on enzyme activities is aggregate-size specific. We performed three experiments using an Andisol to test the interaction between carboxylesterase (CbE) activity and the organophosphorus (OP) chlorpyrifos...
April 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28432907/assessment-of-field-re-entry-exposure-to-pesticides-a-dislodgeable-foliar-residue-study
#6
Konstantinos M Kasiotis, Angelos N Tsakirakis, C Richard Glass, Agathi N Charistou, Pelagia Anastassiadou, Rianda Gerritsen-Ebben, Kyriaki Machera
A dislodgeable foliar residue study was conducted in greenhouse pepper and tomato on the island of Crete, Greece, following the spray application of an SC insecticide (with active substance (a.s.) tebufenozide) and an EC fungicide (a.s. bupirimate). Furthermore, for the assessment of worker exposure to pesticides - as a result of re-entering the treated crops - a worker dermal exposure study was carried out during the tasks of tying or pruning, which allowed the transfer coefficient values for the specific tasks to be determined...
April 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28428563/a-sublethal-dose-of-a-neonicotinoid-insecticide-disrupts-visual-processing-and-collision-avoidance-behaviour-in-locusta-migratoria
#7
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/28427415/insecticide-resistance-patterns-in-uganda-and-the-effect-of-indoor-residual-spraying-with-bendiocarb-on-kdr-l1014s-frequencies-in-anopheles-gambiae-s-s
#8
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/28422139/high-pesticide-risk-to-honey-bees-despite-low-focal-crop-pollen-collection-during-pollination-of-a-mass-blooming-crop
#9
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/28420543/serum-persistent-organic-pollutants-pops-and-prostate-cancer-risk-a-case-cohort-study
#10
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
#11
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
#12
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
https://www.readbyqxmd.com/read/28417442/mechanisms-of-gene-environment-interactions-in-parkinson-s-disease
#13
REVIEW
Sheila M Fleming
PURPOSE OF REVIEW: The purpose of the study was to discuss the main mechanisms associated with environmental and genetic factors that contribute to the development of Parkinson's disease (PD). RECENT FINDINGS: Novel genetic contributors to PD are being identified at a rapid pace in addition to novel environmental factors. The discovery of mutations in alpha-synuclein and leucine-rich repeat kinase 2 causing inherited forms of PD along with epidemiological, in vitro, and in vivo studies identifying herbicides, pesticides, and metals as risk factors have dramatically improved our understanding of mechanisms involved in the development of PD...
April 17, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28417172/simultaneous-determination-of-multiclass-pesticide-residues-in-human-plasma-using-a-mini-quechers-method
#14
Anshuman Srivastava, Satyajeet Rai, Ashish Kumar Sonker, Kajal Karsauliya, Chandra Prabha Pandey, Sheelendra Pratap Singh
Blood is one of the most assessable matrices for the determination of pesticide residue exposure in humans. Effective sample preparation/cleanup of biological samples is very important in the development of a sensitive, reproducible, and robust method. In the present study, a simple, cost-effective, and rapid gas chromatography-tandem mass spectrometry method has been developed and validated for simultaneous analysis of 31 multiclass (organophosphates, organochlorines, and synthetic pyrethroids) pesticide residues in human plasma by means of a mini QuEChERS (quick, easy, cheap, effective, rugged, and safe) method...
April 17, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28415043/environmental-stressors-as-a-driver-of-the-trait-composition-of-benthic-macroinvertebrate-assemblages-in-polluted-iberian-rivers
#15
Maja Kuzmanovic, Sylvain Dolédec, Nuria de Castro-Catala, Antoni Ginebreda, Sergi Sabater, Isabel Muñoz, Damià Barceló
We used the trait composition of macroinvertebrate communities to identify the effects of pesticides and multiple stressors associated with urban land use at different sites of four rivers in Spain. Several physical and chemical stressors (high metal pollution, nutrients, elevated temperature and flow alterations) affected the urban sites. The occurrence of multiple stressors influenced aquatic assemblages at 50% of the sites. We hypothesized that the trait composition of macroinvertebrate assemblages would reflect the strategies that the assemblages used to cope with the respective environmental stressors...
April 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/28415042/determinants-of-increasing-serum-pops-in-a-population-at-high-risk-for-cardiovascular-disease-results-from-the-predimed-canarias-study
#16
Luis A Henríquez-Hernández, Octavio P Luzardo, Manuel Zumbado, Lluis Serra-Majem, Pilar F Valerón, María Camacho, Jacqueline Álvarez-Pérez, Jordi Salas-Salvadó, Luis D Boada
Persistent organic pollutants (POPs) are well-known ubiquitous environmental chemicals which have been related to adverse health outcomes, including cardiovascular disease (CVD). The purpose of this study was to evaluate POPs burden, and its determinants, in a population at high risk of suffering CVD enrolled in the PREDIMED Study (Spanish acronym for PREvention by means of MEDiterranean Diet). This cohort was formed by 343 participants (55-80 y.o.), which were selected for a preventive nutritional intervention for CVD based on the Mediterranean Diet...
April 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/28413696/prevalence-of-potential-sports-associated-risk-factors-in-swiss-amyotrophic-lateral-sclerosis-patients
#17
Nina Feddermann-Demont, Astrid Junge, Konrad P Weber, Michael Weller, Jiří Dvořák, Alexander A Tarnutzer
OBJECTIVES: Amyotrophic lateral sclerosis (ALS) has been reported to occur with increased incidence amongst physically active people. The role of extrinsic risk factors as physical activity, head trauma and drug/pesticide-exposure in the pathophysiology of ALS and especially in the context of practising sports remains controversial. MATERIALS AND METHODS: We retrospectively studied exposure to extrinsic factors in 92 ALS patients in the presymptomatic stage. Metabolic equivalents (METs) were calculated and the association of physical activity, drug intake, head trauma and participation in specific sports (football [soccer], ice hockey) with age at symptom-onset was evaluated...
April 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28412655/parkinson-s-disease-and-pesticides-a-meta-analysis-of-disease-connection-and-genetic-alterations
#18
Hussien Ahmed, Abdelrahman Ibrahim Abushouk, Mohamed Gabr, Ahmed Negida, Mohamed M Abdel-Daim
Parkinson's disease (PD) is a globally prevalent, multifactorial disorder that occurs due to interactions between genetic and environmental factors. Observational studies have shown a link between exposure to pesticides and the risk of PD. We performed this study to systemically review published case-control studies and estimate quantitatively the association between pesticide exposure and PD. We searched Medline (through PubMed) for eligible case-control studies. The association between pesticide exposure and PD risk or occurrence of certain genetic alterations, related to the pathogenesis of PD was presented as odds ratios (OR) and pooled under the random effects model, using the statistical add-in (MetaXL, version 5...
April 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28411497/chlorpyrifos-induced-oxidative-damage-is-reduced-under-warming-and-predation-risk-explaining-antagonistic-interactions-with-a-pesticide
#19
Lizanne Janssens, Robby Stoks
Interactions with pollutants and environmental factors are poorly studied for physiological traits. Yet physiological traits are important for explaining and predicting interactions at higher levels of organization. We investigated the single and combined impact of the pesticide chlorpyrifos, predation risk and warming on endpoints related to oxidative stress in the damselfly Enallagma cyathigerum. We thereby integrated information on reactive oxygen species (ROS), antioxidant enzymes and oxidative damage. All three treatments impacted the oxidative stress levels and for most traits the pesticide interacted antagonistically with warming or predation risk...
April 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28410962/determinaical-disease-synthesis-of-systematic-reviews
#20
Daniel Krewski, Caroline Barakat-Haddad, Jennifer Donnan, Rosemary Martino, Tamara Pringsheim, Helen Tremlett, Pascal van Lieshout, Stephanie J Walsh, Nicholas J Birkett, James Gomes, Julian Little, Sonya Bowen, Hamilton Candundo, Ting-Kuang Chao, Kayla Collins, James A G Crispo, Tom Duggan, Reem El Sherif, Nawal Farhat, Yannick Fortin, Janet Gaskin, Pallavi Gupta, Mona Hersi, Jing Hu, Brittany Irvine, Shayesteh Jahanfar, Don MacDonald, Kyla McKay, Andrea Morrissey, Pauline Quach, Ruksana Rashid, Sabina Shin, Lindsey Sikora, Stacey Tkachuk, Mohamed K Taher, Ming-Dong Wang, Shalu Darshan, Neil R Cashman
Systematic reviews were conducted to identify risk factors associated with the onset and progression of 14 neurological conditions, prioritized as a component of the National Population Health Study of Neurological Conditions. These systematic reviews provided a basis for evaluating the weight of evidence of evidence for risk factors for the onset and progression of the 14 individual neurological conditions considered. A number of risk factors associated with an increased risk of onset for more than one condition, including exposure to pesticides (associated with an increased risk of AD, amyotrophic lateral sclerosis, brain tumours, and PD; smoking (AD, MS); and infection (MS, Tourette syndrome)...
April 11, 2017: Neurotoxicology
keyword
keyword
69600
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"