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https://www.readbyqxmd.com/read/28198452/undervaluing-delayed-rewards-explains-adolescents-impulsivity-in-inter-temporal-choice-an-erp-study
#1
Yunyun Huang, Ping Hu, Xueting Li
Adolescence has frequently been characterized as a period of choice impulsivity relative to adulthood. According to the control-integrated valuation model of inter-temporal choice, this choice impulsivity may be driven partly by an age-related difference in reward processing. We hypothesized that, compared to adults, adolescents would undervalue delayed rewards during reward processing and would thus be more impulsive in inter-temporal choice. To test this hypothesis at the behavioural and neural levels, we first measured the choice impulsivity of 18 adolescents and 19 adults using a delay discounting task (DDT)...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28196346/organochlorine-pesticides-ocps-and-polychlorinated-biphenyls-pcbs-in-human-breast-milk-and-associated-health-risks-to-nursing-infants-in-northern-tanzania
#2
M H B Müller, A Polder, O B Brynildsrud, M Karimi, E Lie, W B Manyilizu, R H Mdegela, F Mokiti, M Murtadha, H E Nonga, J U Skaare, J L Lyche
This is the first study to report organochlorines (OCs), including chlorinated pesticides (OCPs) and polychlorinated biphenyls (PCBs) in human milk from Tanzania. The main aims of this study were to assess the level of contamination and the possible health risks related to OC exposure in nursing infants from the Northern parts of Tanzania. Ninety-five healthy mother-infant couples attending Mount Meru Regional Referral Hospital (MMRRH), Arusha, Tanzania, were assessed for associations between maternal/infant characteristics, i...
February 11, 2017: Environmental Research
https://www.readbyqxmd.com/read/28194594/pesticide-exposure-and-liver-cancer-a-review
#3
REVIEW
Trang VoPham, Kimberly A Bertrand, Jaime E Hart, Francine Laden, Maria M Brooks, Jian-Min Yuan, Evelyn O Talbott, Darren Ruddell, Chung-Chou H Chang, Joel L Weissfeld
PURPOSE: To review the epidemiologic literature examining pesticide exposure and liver cancer incidence. METHODS: A search of the MEDLINE and Embase databases was conducted in October 2015. Eligibility criteria included examining hepatocellular carcinoma (HCC) or primary liver cancer, pesticides as an exposure of interest, and individual-level incidence. The review was performed according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines...
February 13, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28193292/the-effect-of-elevated-temperatures-on-the-life-history-and-insecticide-resistance-phenotype-of-the-major-malaria-vector-anopheles-arabiensis-diptera-culicidae
#4
Shüné V Oliver, Basil D Brooke
BACKGROUND: Temperature plays a crucial role in the life history of insects. Recent climate change research has highlighted the importance of elevated temperature on malaria vector distribution. This study aims to examine the role of elevated temperatures on epidemiologically important life-history traits in the major malaria vector, Anopheles arabiensis. Specifically, the differential effects of temperature on insecticide-resistant and susceptible strains were examined. METHODS: Two laboratory strains of A...
February 14, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28192994/cats-internal-exposure-to-selected-bfrs-and-organochlorines-correlated-to-house-dust-and-cat-food
#5
Jessica Norrgran Engdahl, Anders Bignert, Bernt Jones, Ioannis Athanassiadis, Ake Bergman, Jana Melinda Weiss
Pet cats may be used as a biomarker for assessing exposures to organohalogen compounds (OHCs) adsorbed to household dust in home environments. This study explores two exposure routes of OHCs, i) ingestion of OHCs via house dust and ii) via cat food. House dust from 17 Swedish homes and serum from the participating families' pet cats were collected and cat food purchased matching the diet reported. Paired samples of cat serum, house dust, and cat food were analysed for brominated flame retardants/natural products (PBDEs, BB-209, DBDPE, 2,4,6-TBP, OH-PBDEs) and organochlorines (PCBs, DDT, DDE, HCB, PCP)...
February 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28191507/mapping-the-distribution-of-anopheles-funestus-across-benin-highlights-a-sharp-contrast-of-susceptibility-to-insecticides-and-infection-rate-to-plasmodium-between-southern-and-northern-populations
#6
Rousseau Djouaka, Romaric Akoton, Genevieve M Tchigossou, Seun M Atoyebi, Helen Irving, Michael O Kusimo, Innocent Djegbe, Jacob M Riveron, Eric Tossou, Akadiri Yessoufou, Charles S Wondji
Background. Malaria remains an important public health issue in Benin, with Anopheles gambiae s.l. and Anopheles funestus s.s being the predominant vectors. This study was designed to generate information on An. funestus distribution, molecular speciation, Plasmodium infection rate and insecticide susceptibility status across Benin. Methods. Mosquito samples were collected from December 2014 to January 2016 in 46 localities in Benin. These samples were mapped and An. funestus collected were speciated to the molecular level...
December 14, 2016: Wellcome Open Res
https://www.readbyqxmd.com/read/28189073/lower-levels-of-persistent-organic-pollutants-metals-and-the-marine-omega-3-fatty-acid-dha-in-farmed-compared-to-wild-atlantic-salmon-salmo-salar
#7
Anne-Katrine Lundebye, Erik-Jan Lock, Josef D Rasinger, Ole Jakob Nøstbakken, Rita Hannisdal, Egil Karlsbakk, Vidar Wennevik, Abdullah S Madhun, Lise Madsen, Ingvild Eide Graff, Robin Ørnsrud
Contaminants and fatty acid levels in farmed- versus wild Atlantic salmon have been a hot topic of debate in terms of food safety. The present study determined dioxins (polychlorinated dibenzo-p-dioxin and dibenzofuran), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), organochlorine pesticides (OCPs), metals and fatty acids in wild and farmed Atlantic salmon. Contaminant levels of dioxins, PCBs, OCPs (DDT, dieldrin, lindane, chlordane, Mirex, and toxaphene), and mercury were higher in wild salmon than in farmed salmon, as were the concentrations of the essential elements selenium, copper, zinc and iron, and the marine omega-3 fatty acid docosahexaenoic acid (DHA)...
February 8, 2017: Environmental Research
https://www.readbyqxmd.com/read/28186216/absolute-configuration-determination-through-the-unique-intramolecular-excitonic-coupling-in-the-circular-dichroisms-of-o-p-ddt-and-o-p-ddd-a-combined-experimental-and-theoretical-study
#8
Hiroki Tanaka, Yoshihisa Inoue, Takeshi Nakano, Tadashi Mori
Circular dichroisms (CDs) of the o,p'-isomers of 1,1,1-trichloro- and 1,1-dichloro-2,2-bis(chlorophenyl)ethanes (DDT and DDD) were investigated experimentally and theoretically. A series of strong Cotton effect peaks in a characteristic negative-negative-positive-negative, or its mirror-imaged, pattern were observed in the CD spectra of these persistent organic pollutants. The theoretical CD spectra at the SAC-CI/B95(d) and RI-CC2/def2-TZVPP levels well reproduced the experimental ones, enabling us to unambiguously assign the absolute configuration of (+)-DDT and (-)-DDD as S...
February 10, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28180196/serial-transthoracic-coronary-doppler-shows-complete-reversibility-of-microvascular-obstruction-pattern-at-one-month-after-reperfused-acute-myocardial-infarction
#9
Camelia Diana Ober, Mihai Claudiu Ober, Adrian Corneliu Iancu
: "No reflow" phenomenon is a common complication with significant prognostic repercussions after reperfused acute myocardial infarction. Previous studies have shown the feasibility and prognostic significance of coronary microcirculation assessment by transthoracic Doppler of left anterior descending artery (LAD). The aim of the study was to evaluate the time course of the coronary microcirculation status after acute anterior myocardial infarction reperfused by primary angioplasty with stent on LAD...
January 31, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28179905/plasma-levels-of-macrophage-migration-inhibitory-factor-and-d-dopachrome-tautomerase-show-a-highly-specific-profile-in-early-life
#10
Thierry Roger, Luregn J Schlapbach, Anina Schneider, Manuela Weier, Sven Wellmann, Patrick Marquis, David Vermijlen, Fred C G J Sweep, Lin Leng, Richard Bucala, Thierry Calandra, Eric Giannoni
Macrophage migration inhibitory factor (MIF) is a pleiotropic, constitutively expressed, pro-inflammatory cytokine and an important regulator of immune responses. d-dopachrome tautomerase (DDT), a newly described member of the MIF protein superfamily, shares sequence homology and biological activities with MIF. We recently reported that high expression levels of MIF sustain innate immune responses in newborns. Here, we elected to further characterize age-dependent MIF expression and to define whether DDT shares a similar expression profile with MIF...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28168834/pyrethroid-and-ddt-tolerance-of-anopheles-gambiae-s-l-from-sengerema-district-an-area-of-intensive-pesticide-usage-in-northwestern-tanzania
#11
Anita Philbert, Sylvester Leonard Lyantagaye, Gabriele Pradel, Che Julius Ngwa, Gamba Nkwengulila
OBJECTIVE: To assess the susceptibility status of malaria vectors to pyrethroids and dichlorodiphenyltrichloroethane (DDT), characterize the mechanisms underlying resistance, and to evaluate the role of agro-chemical use in resistance selection among malaria vectors in Sengerema agro ecosystem zone, Tanzania. METHODS: Mosquito larvae were collected from farms and reared to obtain adults. The susceptibility status of An. gambiae s.l. was assessed using WHO bioassay tests to permethrin, deltamethrin, lambdacyhalothrin, etofenprox, cyfluthrin, and DDT...
February 7, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28161515/first-report-on-organochlorine-pesticides-in-water-in-a-highly-productive-agro-industrial-basin-of-the-central-valley-chile
#12
Monica Montory, Javier Ferrer, Diego Rivera, María Valentina Villouta, Joan O Grimalt
The Ñuble River flows through an agricultural area in the central zone of Chile in which different types of fruits are grown. The objective of this study was to identify the levels and source of organochlorine pesticides (OCPs) in the surface waters of the Ñuble River. Surface water samples were collected at 10 sampling points and analyzed for 19 organochlorine pesticides during the dry (spring-summer) and wet (autumn-winter) periods of 2013 and 2014. The results revealed that concentrations of total OCPs in surface waters ranged from 0...
December 26, 2016: Chemosphere
https://www.readbyqxmd.com/read/28160993/three-cycles-of-human-biomonitoring-in-flanders-time-trends-observed-in-the-flemish-environment-and-health-study
#13
Greet Schoeters, Eva Govarts, Liesbeth Bruckers, Elly Den Hond, Vera Nelen, Stefaan De Henauw, Isabelle Sioen, Tim S Nawrot, Michelle Plusquin, Annette Vriens, Adrian Covaci, Ilse Loots, Bert Morrens, Dries Coertjens, Nicolas Van Larebeke, Sam De Craemer, Kim Croes, Nathalie Lambrechts, Ann Colles, Willy Baeyens
To follow time trends in exposure to environmental chemicals, three successive campaigns of the Flemish Environment and Health Study (FLEHS) have recruited and sampled in total 5825 participants between 2002 and 2014. Cord samples from newborns, urine and blood samples from 14 to 15 years old adolescents and from adults between 50 and 65 years old were analysed in geographical representative samples of the Flemish population. The data of the different campaigns were considered per age group and per biomarker after adjustment for predefined covariates to take into account differences in characteristics of the study populations over time...
November 18, 2016: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28153416/evaluating-the-effectiveness-of-pollution-control-measures-via-the-occurrence-of-ddts-and-hchs-in-wet-deposition-of-an-urban-center-china
#14
Ling-Chuan Guo, Lian-Jun Bao, Shao-Meng Li, Shu Tao, Eddy Y Zeng
Wet deposition is not only a mechanism for removing atmospheric pollutants, but also a process which reflects loadings of atmospheric pollutants. Our previous study on wet deposition examined the effectiveness of short-term control measures on atmospheric particulate pollution, which were partly effective for organic pollutants of current input sources. In the present study, dichlorodiphenyltrichloroethanes (DDTs) and hexachlorocyclohexanes (HCHs), representative of legacy contaminants, were measured in the same samples collected throughout the entire year of 2010 in Guangzhou, a large urban center in South China...
January 30, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28132950/malaria-transmission-and-the-sensitivity-of-aggressive-mosquitoes-to-insecticides-in-a-poorly-urbanized-area-of-the-deido-health-district-in-douala-cameroon
#15
P Akono Ntonga, C Tonga, J A Mbida Mbida, C Ndo, P Awono Ambene, L G Lehman, R Ngaha, O E Ngo Hondt, M F Peka Nsangou, N Tedongmo Lopedji
The design of an appropriate strategy for mosquito control in urban areas must take into account the local ecoclimate and its particularities. This study sought to determine the dynamics of malaria transmission and the level of insecticide susceptibility of aggressive mosquitoes in Ndogbong, a poorly urbanized district of Douala. Mosquitoes were captured on volunteers in 4 houses and outdoors for 2 consecutive nights a month, from April to September 2014, and identified by molecular and morphologic techniques...
January 27, 2017: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28121271/pesticide-contaminants-in-selected-species-of-edible-wild-mushrooms-from-the-north-eastern-part-of-poland
#16
Michalina Gałgowska, Renata Pietrzak-Fiećko
The aim of this study was to determine the level of chlorinated hydrocarbon residues in selected edible mushrooms from north-eastern Poland. The experiment was carried out on 45 samples consisting of 15 fruiting bodies each of the following species: Boletus edulis, Imleria badia and Cantharellus cibarius. Dried samples were subjected to extraction of lipids with a Soxhlet and a standard procedure-based on the decomposition of lipids by concentrated sulfuric acid and the release of organic insecticides to the hexane layer-was used to determine chlorinated hydrocarbons...
March 4, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28115498/effects-of-different-surfaces-and-insecticide-carriers-on-residual-insecticide-bioassays-against-bed-bugs-cimex-spp-hemiptera-cimicidae
#17
Kai Dang, G Veera Singham, Stephen L Doggett, David G Lilly, Chow-Yang Lee
The performance of five insecticides (bendiocarb, deltamethrin, DDT, malathion, and imidacloprid) using three application methods (oil-based insecticide films on filter paper, and acetone-based insecticide deposits on two substrates: filter paper and glass) was assessed against a susceptible strain of Cimex lectularius (L.) and two resistant strains of Cimex hemipterus (F.). Substrate type significantly affected (P < 0.05) the insecticide knockdown response of the susceptible strain in acetone-based insecticide bioassays, with longer survival time on filter paper than on the glass surface...
January 22, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28115149/pesticide-exposures-and-respiratory-health-in-general-populations
#18
REVIEW
Ming Ye, Jeremy Beach, Jonathan W Martin, Ambikaipakan Senthilselvan
Human exposures to pesticides can occur in the workplace, in the household and through the ambient environment. While several articles have reviewed the impact of pesticide exposures on human respiratory health in occupational settings, to the best of our knowledge, this article is the first one to review published studies on the association between pesticide exposures and human respiratory health in the general populations. In this article, we critically reviewed evidences up to date studying the associations between non-occupational pesticide exposures and respiratory health in general populations...
January 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28114328/pyrethroid-resistance-in-malaysian-populations-of-dengue-vector-aedes-aegypti-is-mediated-by-cyp9-family-of-cytochrome-p450-genes
#19
Intan H Ishak, Basile Kamgang, Sulaiman S Ibrahim, Jacob M Riveron, Helen Irving, Charles S Wondji
BACKGROUND: Dengue control and prevention rely heavily on insecticide-based interventions. However, insecticide resistance in the dengue vector Aedes aegypti, threatens the continued effectiveness of these tools. The molecular basis of the resistance remains uncharacterised in many endemic countries including Malaysia, preventing the design of evidence-based resistance management. Here, we investigated the underlying molecular basis of multiple insecticide resistance in Ae. aegypti populations across Malaysia detecting the major genes driving the metabolic resistance...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28113064/organochlorine-pesticides-in-residential-soils-and-sediments-within-two-main-agricultural-areas-of-northwest-mexico-concentrations-enantiomer-compositions-and-potential-sources
#20
José Luis Sánchez-Osorio, José Vinicio Macías-Zamora, Nancy Ramírez-Álvarez, Terry F Bidleman
The agricultural Mexicali and Yaqui valleys (MV, YV) in northwest Mexico were heavily treated with organochlorine pesticides in the past. Residential soils and agricultural drain sediments were sampled in 2008-2009 and analyzed for DDTs (o,p'- and p,p'- isomers of DDE, DDD and DDT); hexachlorocyclohexanes (α-, β-, γ- and δ-HCH) and chlordanes (trans-chlordane, cis-chlordane, heptachlor and heptachlor exo-epoxide). Geometric means (GMs) (ng g(-1) dry weight) were: MV soils (n = 27) ΣDDT 22, ΣHCH 0.80, ΣCHL 0...
January 5, 2017: Chemosphere
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