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  1 / 2016 MEDLINE  
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[PMID]:27774651
[Au] Autor:Alharbi HA; Alcorn J; Al-Mousa A; Giesy JP; Wiseman SB
[Ad] Endereço:Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada.
[Ti] Título:Toxicokinetics and toxicodynamics of chlorpyrifos is altered in embryos of Japanese medaka exposed to oil sands process-affected water: evidence for inhibition of P-glycoprotein.
[So] Source:J Appl Toxicol;37(5):591-601, 2017 05.
[Is] ISSN:1099-1263
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Oil sands process-affected water (OSPW) is generated during extraction of bitumen in the surface mining oil sands industry in Alberta, Canada. Studies were performed in vitro by use of Caco-2 cells, and in vivo with larvae of Japanese medaka (Oryzias latipes) to determine if organic compounds from the aqueous phase of OSPW inhibit ATP binding cassette protein ABCB1 (permeability-glycoprotein, P-gp). Neutral and basic fractions of OSPW inhibited activity of P-gp in Caco-2 cells by 1.9- and 2.0-fold, respectively, while the acidic fraction had the least effect. The organophosphate pesticides chlorpyrifos (a substrate of P-gp) and malathion (not a substrate of P-gp), were used as model chemicals to investigate inhibition of P-gp in larvae. Co-exposure to chlorpyrifos and an extract of OSPW containing basic and neutral compounds reduced survival of larvae to 26.5% compared to survival of larvae exposed only to chlorpyrifos, which was 93.7%. However, co-exposure to malathion and the extract of OSPW did not cause acute lethality compared to exposure only to malathion. Accumulation and bioconcentration of chlorpyrifos, but not malathion, was greater in larvae co-exposed with the extract of OSPW. The terminal elimination half-life of chlorpyrifos in larvae exposed to chlorpyrifos in freshwater was 5 days compared with 11.3 days in larvae exposed to chlorpyrifos in OSPW. Results suggest that in non-acute exposures, basic and neutral organic compounds in the water-soluble fraction of OSPW inhibit activity of P-gp, which suggests that OSPW has the potential to cause adverse effects by chemosensitization. Copyright © 2016 John Wiley & Sons, Ltd.
[Mh] Termos MeSH primário: Membro 1 da Subfamília B de Cassetes de Ligação de ATP/antagonistas & inibidores
Clorpirifos/toxicidade
Inseticidas/toxicidade
Campos de Petróleo e Gás
Oryzias/fisiologia
Poluentes Químicos da Água/toxicidade
[Mh] Termos MeSH secundário: Subfamília B de Transportador de Cassetes de Ligação de ATP/metabolismo
Alberta
Animais
Carga Corporal (Radioterapia)
Células CACO-2
Sobrevivência Celular/efeitos dos fármacos
Clorpirifos/farmacocinética
Embrião não Mamífero
Água Doce
Meia-Vida
Seres Humanos
Inseticidas/farmacocinética
Larva
Malation/toxicidade
Oryzias/metabolismo
Análise de Sobrevida
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (ABCB1 protein, human); 0 (ATP Binding Cassette Transporter, Sub-Family B); 0 (ATP-Binding Cassette, Sub-Family B, Member 1); 0 (Insecticides); 0 (Water Pollutants, Chemical); JCS58I644W (Chlorpyrifos); U5N7SU872W (Malathion)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180307
[Lr] Data última revisão:
180307
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE
[do] DOI:10.1002/jat.3397


  2 / 2016 MEDLINE  
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[PMID]:28466816
[Au] Autor:Mise Yonar S; Yonar ME; Ural MS
[Ad] Endereço:Department of Aquaculture and Fish Diseases, Firat University, Fisheries Faculty, Elazig, Turkey.
[Ti] Título:Antioxidant effect of curcumin against exposure to malathion in Cyprinus carpio.
[So] Source:Cell Mol Biol (Noisy-le-grand);63(3):68-72, 2017 Mar 31.
[Is] ISSN:1165-158X
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:The aim of this study was to determine protective effects of curcumin on oxidant/antioxidant parameters in Cyprinus carpio exposed to malathion. The fish were exposed to two sublethal concentrations of malathion (0.5 and 1 mg/L), and curcumin (100 mg per kg of fish weight) was simultaneously administered for 14 days. Malondialdehyde level and superoxide dismutase, catalase, glutathione peroxidase, and glutathione-S-transferase  activities were monitored in liver, kidney and gills, which were collected at the end of the experiment. The results revealed a significant increase in the malondialdehyde levels of the groups that were exposed to malathion. Also, malathion exposure caused a significant increase in superoxide dismutase, catalase, and glutathione-S-transferase  activities and a significant decrease in glutathione peroxidase activity. Treatment with curcumin attenuated the malathion-induced oxidative stress by significantly decreasing the levels of malondialdehyde in the tissues. In addition, curcumin reversed the superoxide dismutase, catalase, glutathione peroxidase, and glutathione-S-transferase activities. In conclusion, this study demonstrated that malathion caused oxidative stress and negative alterations on the antioxidant enzyme activities of the fish. However, this toxic effect was neutralised by the administration of curcumin.
[Mh] Termos MeSH primário: Antioxidantes/farmacologia
Carpas/metabolismo
Curcumina/farmacologia
Malation/toxicidade
[Mh] Termos MeSH secundário: Animais
Comportamento Animal/efeitos dos fármacos
Catalase/metabolismo
Glutationa Peroxidase/metabolismo
Glutationa Transferase/metabolismo
Malondialdeído/metabolismo
Estresse Oxidativo/efeitos dos fármacos
Superóxido Dismutase/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 4Y8F71G49Q (Malondialdehyde); EC 1.11.1.6 (Catalase); EC 1.11.1.9 (Glutathione Peroxidase); EC 1.15.1.1 (Superoxide Dismutase); EC 2.5.1.18 (Glutathione Transferase); IT942ZTH98 (Curcumin); U5N7SU872W (Malathion)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180115
[Lr] Data última revisão:
180115
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170504
[St] Status:MEDLINE
[do] DOI:10.14715/cmb/2017.63.3.13


  3 / 2016 MEDLINE  
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[PMID]:28456300
[Au] Autor:Paporisch A; Rubin B
[Ad] Endereço:R. H. Smith Institute of Plant Science & Genetics in Agriculture, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot 76100, Israel. Electronic address: amit.paporisch@mail.huji.ac.il.
[Ti] Título:Isoxadifen safening mechanism in sweet corn genotypes with differential response to P450-metabolized herbicides.
[So] Source:Pestic Biochem Physiol;138:22-28, 2017 May.
[Is] ISSN:1095-9939
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Three sweet corn genotypes, two inbred lines (IBER001 and IBER002) and their hybrid (ER00X), differ in their phenotypic responses to several P450-metabolized herbicides, used in sweet corn, namely, foramsulfuron, iodosulfuron, rimsulfuron and tembotrione. Foramsulfuron is a sulfonylurea herbicide commonly formulated with the safener isoxadifen that is used for selective post-emergence weed control in corn. Our goal was to elucidate the mechanism of these genotypes' responses to foramsulfuron and safener isoxadifen and examine the heritability of those responses. IBER001 was sensitive to foramsulfuron+isoxadifen, with an ED of 3.6gaiha , while IBER002 and ER00X were tolerant with ED values of 808 and 700gaiha , respectively. ALS enzyme extracted from each of the different genotypes was equally sensitive to foramsulfuron. Pre-treatment with malathion, a known cytochrome P450 inhibitor, increased foramsulfuron injury in IBER002 and ER00X, but had no effect on those lines when isoxadifen was applied with the herbicide. Foramsulfuron-treated IBER001 was severely injured regardless of the presence of malathion and/or isoxadifen. Pre-treatment with malathion similarly increased the phytotoxicity of iodosulfuron+safener (mefenpyr) and rimsulfuron to the tolerant genotypes, but did not increase the level of injury caused by the tembotrione+isoxadifen treatment. Segregation of F2 and backcross progenies according to their responses to foramsulfuron+isoxadifen revealed a pattern of inheritance typical of a trait controlled by a single gene inheritance, with a recessive allele conferring sensitivity. Our results support the hypothesis that foramsulfuron selectivity is associated with P450 metabolism and that isoxadifen positively affects P450 activity. The sensitive genotype that does not respond to isoxadifen is presumably homozygous for a deficient or non-functioning P450 gene.
[Mh] Termos MeSH primário: Sistema Enzimático do Citocromo P-450/metabolismo
Genótipo
Herbicidas/toxicidade
Oxazóis/toxicidade
Zea mays/genética
[Mh] Termos MeSH secundário: Inibidores da Colinesterase/metabolismo
Sistema Enzimático do Citocromo P-450/genética
Regulação Enzimológica da Expressão Gênica
Regulação da Expressão Gênica de Plantas
Malation/metabolismo
Pirazóis/farmacologia
Zea mays/classificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (1-(2, 4-dichlorophenyl)-4, 5-dihydro-5-methyl-1H-pyrazole-3,5-dicarboxylic acid diethyl ester); 0 (Cholinesterase Inhibitors); 0 (Herbicides); 0 (Oxazoles); 0 (Pyrazoles); 0 (ethyl-4,5-dihydro-5,5-diphenylisoxazol-3-carboxylate); 9035-51-2 (Cytochrome P-450 Enzyme System); U5N7SU872W (Malathion)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170501
[St] Status:MEDLINE


  4 / 2016 MEDLINE  
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[PMID]:28755904
[Au] Autor:Boulanouar S; Combès A; Mezzache S; Pichon V
[Ad] Endereço:Dept of Analytical, Bioanalytical Sciences and Miniaturization (LSABM) - UMR CBI 8231 (CNRS-ESPCI), ESPCI, PSL Research University, 10 rue Vauquelin, 75 231 Paris Cedex 05, France.
[Ti] Título:Synthesis and application of molecularly imprinted polymers for the selective extraction of organophosphorus pesticides from vegetable oils.
[So] Source:J Chromatogr A;1513:59-68, 2017 Sep 01.
[Is] ISSN:1873-3778
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The increasing use of pesticides in agriculture causes environmental issues and possible serious health risks to humans and animals. Their determination at trace concentrations in vegetable oils constitutes a significant analytical challenge. Therefore, their analysis often requires both an extraction and a purification step prior to separation with liquid chromatography (LC) and mass spectrometry (MS) detection. This work aimed at developing sorbents that are able to selectively extract from vegetable oil samples several organophosphorus (OPs) pesticides presenting a wide range of physico-chemical properties. Therefore, different conditions were screened to prepare molecularly imprinted polymers (MIPs) by a non-covalent approach. The selectivity of the resulting polymers was evaluated by studying the OPs retention in pure media on both MIPs and non-imprinted polymers (NIP) used as control. The most promising MIP sorbent was obtained using monocrotophos (MCP) as the template, methacrylic acid (MAA) as the monomer and ethylene glycol dimethacrylate (EGDMA) as the cross-linker with a molar ratio of 1/4/20 respectively. The repeatability of the extraction procedure and of the synthesis procedure was demonstrated in pure media. The capacity of this MIP was 1mg/g for malathion. This MIP was also able to selectively extract three OPs from almond oil by applying the optimized SPE procedure. Recoveries were between 73 and 99% with SD values between 4 and 6% in this oil sample. The calculated LOQs (between 0.3 and 2µg/kg) in almond seeds with a SD between 0.1 and 0.4µg/kg were lower than the Maximum Residue Levels (MRLs) established for the corresponding compounds in almond seed.
[Mh] Termos MeSH primário: Compostos Organofosforados/análise
Praguicidas/análise
Óleos Vegetais/análise
Ácidos Polimetacrílicos/química
[Mh] Termos MeSH secundário: Cromatografia Líquida de Alta Pressão
Reagentes para Ligações Cruzadas/química
Seres Humanos
Malation/química
Espectrometria de Massas
Metacrilatos/química
Impressão Molecular/métodos
Compostos Organofosforados/química
Praguicidas/química
Fósforo/química
Extração em Fase Sólida/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cross-Linking Reagents); 0 (Methacrylates); 0 (Organophosphorus Compounds); 0 (Pesticides); 0 (Plant Oils); 0 (Polymethacrylic Acids); 25087-26-7 (polymethacrylic acid); 27YLU75U4W (Phosphorus); 66YXD4DKO9 (almond oil); 7BK5G69305 (ethylene dimethacrylate); U5N7SU872W (Malathion)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170731
[St] Status:MEDLINE


  5 / 2016 MEDLINE  
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[PMID]:28650966
[Au] Autor:Francis S; Saavedra-Rodriguez K; Perera R; Paine M; Black WC; Delgoda R
[Ad] Endereço:Natural Products Institute, Faculty of Science and Technology, University of the West Indies, Mona, Jamaica.
[Ti] Título:Insecticide resistance to permethrin and malathion and associated mechanisms in Aedes aegypti mosquitoes from St. Andrew Jamaica.
[So] Source:PLoS One;12(6):e0179673, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The emergence of novel diseases spread by the Aedes aegypti mosquito in Jamaica and the Caribbean, has prompted studies on insecticide resistance towards effective management of the vector. Though Jamaica has been using the organophosphate insecticide malathion in its vector control program for more than 30 years, resistance to the pesticide has not been tested in over a decade. We analyzed resistance to malathion and the pyrethroid insecticide, permethrin on mosquitoes collected across St. Andrew, Jamaica, and analyzed the molecular basis of resistance. The Center for Disease Control (CDC) bioassay revealed that Ae. aegypti mosquitoes from St. Andrew, Jamaica were resistant to permethrin (15 µg/bottle) with mortalities at 0-8% at 30 minute exposure time, while contact with malathion (50 µg/bottle) revealed ≤ 50% mortality at 15 minutes, which increased to 100% at 45 minutes. The standard susceptible New Orleans (NO) strain exhibited 100% mortality within15 minutes. The activities of multifunction oxidases and p-nitro phenyl-acetate esterases were significantly greater in most Jamaican populations in comparison to the NO strain, while activities of glutathione-S-transferase, acetylcholinesterase, α-esterase and ß-esterase activity were relatively equal, or lower than that of the control strain. The frequency of knockdown resistance mutations in the voltage dependent sodium channel gene were measured. All collections were fixed for Cys1,534 while 56% of mosquitoes were Ile1,016/Val1,016 heterozygotes, and 33% were Ile1,016 homozygotes. Aedes aegypti from St. Andrew Jamaica are resistant to permethrin with variations in the mode of mechanism, and possibly developing resistance to malathion. Continued monitoring of resistance is critically important to manage the spread of the vector in the country.
[Mh] Termos MeSH primário: Aedes/efeitos dos fármacos
Resistência a Inseticidas/genética
Inseticidas/farmacologia
Malation/farmacologia
Controle de Mosquitos/métodos
Permetrina/farmacologia
[Mh] Termos MeSH secundário: Animais
Jamaica
Mutação
Canais de Sódio Disparados por Voltagem/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Insecticides); 0 (Voltage-Gated Sodium Channels); 509F88P9SZ (Permethrin); U5N7SU872W (Malathion)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170920
[Lr] Data última revisão:
170920
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170627
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0179673


  6 / 2016 MEDLINE  
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[PMID]:28554137
[Au] Autor:Pham B; Miranda A; Allinson G; Nugegoda D
[Ad] Endereço:School of Science, RMIT University, Bundoora West Campus, Victoria 3083, Australia. Electronic address: s3465588@student.rmit.edu.au.
[Ti] Título:Evaluating the non-lethal effects of organophosphorous and carbamate insecticides on the yabby (Cherax destructor) using cholinesterase (AChE, BChE), Glutathione S-Transferase and ATPase as biomarkers.
[So] Source:Ecotoxicol Environ Saf;143:283-288, 2017 Sep.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The toxicity of two organophosphorus insecticides, chlorpyrifos (CPF), malathion (MAL), and one carbamate insecticide, methomyl (METH), to the yabby (Cherax destructor) was assessed by measuring cholinesterase (AChE, BChE), Glutathione S-Transferase (GST) and Na /K ATPase activity after 96h of exposure. Yabbies exposed to all three insecticides at 2 and 5µgL exhibited significant AChE, BChE, GST and Na /K ATPase inhibition. Based on these enzyme inhibition tests, the toxicity of the three insecticides to C. destructor was CPF > MAL > METH. After 14 days of recovery the yabbies enzymatic activities of AChE, BChE, GST and Na /K ATPase was measured. Recovery of The enzyme activity recovery was faster after the exposure to METH than for the yabbies exposed to CPF and MAL. Slow recovery of enzyme activity could affect the physical activities of organisms and produce indirect effects on populations if such crayfish are less able to elude predators or search for food.
[Mh] Termos MeSH primário: Colinesterases/metabolismo
Decápodes (Crustáceos)/efeitos dos fármacos
Glutationa Transferase/metabolismo
Inseticidas/toxicidade
ATPase Trocadora de Sódio-Potássio/metabolismo
Poluentes Químicos da Água/toxicidade
[Mh] Termos MeSH secundário: Animais
Biomarcadores/metabolismo
Clorpirifos/toxicidade
Decápodes (Crustáceos)/enzimologia
Decápodes (Crustáceos)/metabolismo
Relação Dose-Resposta a Droga
Brânquias/efeitos dos fármacos
Brânquias/enzimologia
Brânquias/metabolismo
Hepatopâncreas/efeitos dos fármacos
Hepatopâncreas/enzimologia
Hepatopâncreas/metabolismo
Inseticidas/química
Malation/toxicidade
Metomil/toxicidade
Poluentes Químicos da Água/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 0 (Insecticides); 0 (Water Pollutants, Chemical); 1NQ08HN02S (Methomyl); EC 2.5.1.18 (Glutathione Transferase); EC 3.1.1.8 (Cholinesterases); EC 3.6.3.9 (Sodium-Potassium-Exchanging ATPase); JCS58I644W (Chlorpyrifos); U5N7SU872W (Malathion)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170928
[Lr] Data última revisão:
170928
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170530
[St] Status:MEDLINE


  7 / 2016 MEDLINE  
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[PMID]:28484956
[Au] Autor:Williman C; Munitz MS; Montti MIT; Medina MB; Navarro AF; Ronco AE
[Ad] Endereço:Facultad de Ciencias de la Alimentación, Universidad Nacional de Entre Ríos, Concordia, Argentina.
[Ti] Título:Pesticide survey in water and suspended solids from the Uruguay River Basin, Argentina.
[So] Source:Environ Monit Assess;189(6):259, 2017 Jun.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The Uruguay River is receptor of pollutants, such as pesticides, from agriculture activities along its course. The present study reports concentration levels of organochlorinate, organophosphorus, and other pesticides in water and suspended solids in nine sampling sites of the Uruguay River. Data analyses included principal component analysis (PCA) to assess differences between sampling sites contamination. Most of the tested pesticides were ubiquitous due to the widely use in the chemical control of pests implemented in the region. Detected concentrations of aldrin, chlordane, dieldrin, endrin, heptachlor epoxide, lindane, 4,4'-DDT, endosulfan, chlorpyrifos, diazinon, methyl-parathion, and malathion were found to be over regional and international concentration level guidelines, according to the European Union, the US Environmental Protection Agency, or the Argentinean Secretariat of Environment and Sustainable Development. For this reason, future studies in Uruguay River Basin are needed.
[Mh] Termos MeSH primário: Monitoramento Ambiental
Praguicidas/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Agricultura
Aldrina/análise
Argentina
DDT/análise
Dieldrin/análise
Endossulfano/análise
Lindano/análise
Malation/análise
Rios
Inquéritos e Questionários
Uruguai
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Pesticides); 0 (Water Pollutants, Chemical); 59NEE7PCAB (Lindane); CIW5S16655 (DDT); I0246D2ZS0 (Dieldrin); OKA6A6ZD4K (Endosulfan); OZE3CLY605 (Aldrin); U5N7SU872W (Malathion)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170510
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-5956-9


  8 / 2016 MEDLINE  
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[PMID]:28431762
[Au] Autor:Stoler AB; Mattes BM; Hintz WD; Jones DK; Lind L; Schuler MS; Relyea RA
[Ad] Endereço:Darrin Fresh Water Institute, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. Electronic address: abstoler@gmail.com.
[Ti] Título:Effects of a common insecticide on wetland communities with varying quality of leaf litter inputs.
[So] Source:Environ Pollut;226:452-462, 2017 Jul.
[Is] ISSN:1873-6424
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Chemical contamination of aquatic systems often co-occurs with dramatic changes in surrounding terrestrial vegetation. Plant leaf litter serves as a crucial resource input to many freshwater systems, and changes in litter species composition can alter the attributes of freshwater communities. However, little is known how variation in litter inputs interacts with chemical contaminants. We investigated the ecological effects resulting from changes in tree leaf litter inputs to freshwater communities, and how those changes might interact with the timing of insecticide contamination. Using the common insecticide malathion, we hypothesized that inputs of nutrient-rich and labile leaf litter (e.g., elm [Ulmus spp.] or maple [Acer spp.]) would reduce the negative effects of insecticides on wetland communities relative to inputs of recalcitrant litter (e.g., oak [Quercus spp.]). We exposed artificial wetland communities to a factorial combination of three litter species treatments (elm, maple, and oak) and four insecticide treatments (no insecticide, small weekly doses of 10 µg L , and either early or late large doses of 50 µg L ). Communities consisted of microbes, algae, snails, amphipods, zooplankton, and two species of tadpoles. After two months, we found that maple and elm litter generally induced greater primary and secondary production. Insecticides induced a reduction in the abundance of amphipods and some zooplankton species, and increased phytoplankton. In addition, we found interactive effects of litter species and insecticide treatments on amphibian responses, although specific effects depended on application regime. Specifically, with the addition of insecticide, elm and maple litter induced a reduction in gray tree frog survival, oak and elm litter delayed tree frog metamorphosis, and oak and maple litter reduced green frog tadpole mass. Our results suggest that attention to local forest composition, as well as the timing of pesticide application might help ameliorate the harmful effects of pesticides observed in freshwater systems.
[Mh] Termos MeSH primário: Monitoramento Ambiental
Inseticidas/análise
Zonas Úmidas
[Mh] Termos MeSH secundário: Acer/efeitos dos fármacos
Animais
Anuros
Ecologia
Ecossistema
Água Doce
Larva/efeitos dos fármacos
Malation/toxicidade
Fitoplâncton/efeitos dos fármacos
Folhas de Planta/química
Plantas/efeitos dos fármacos
Quercus/efeitos dos fármacos
Zooplâncton/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Insecticides); U5N7SU872W (Malathion)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170706
[Lr] Data última revisão:
170706
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170423
[St] Status:MEDLINE


  9 / 2016 MEDLINE  
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[PMID]:28421653
[Au] Autor:Aldridge RL; Kaufman PE; Bloomquist JR; Gezan SA; Linthicum KJ
[Ad] Endereço:Center for Medical, Agricultural, and Veterinary Entomology, United States Department of Agriculture-Agricultural Research Service, Gainesville, FL, U.S.A.
[Ti] Título:Permethrin and malathion LD values for Culex quinquefasciatus vary with topical application site.
[So] Source:Med Vet Entomol;31(3):306-311, 2017 Sep.
[Is] ISSN:1365-2915
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Prior research in multiple insect species has demonstrated that insecticide-induced mortality varies according to the body region exposed on the insect. This variation has been demonstrated in Culex quinquefasciatus Say (Diptera: Culicidae), but has not been quantified using dose-response curves. Applications of technical permethrin or malathion to one of three body regions on Cx. quinquefasciatus resulted in dose-response curves that were not equivalent to one another. The generated LD values and curves for each body region were compared with previously reported LD values for analogous sites in several mosquito species, specifically the mesothorax. Based on the present results, the permethrin and malathion LD and LD concentrations required for droplets impinging on the abdomen and mesothorax of Cx. quinquefasciatus when applied through ground-based spray systems utilized by mosquito control programmes were calculated.
[Mh] Termos MeSH primário: Culex/efeitos dos fármacos
Inseticidas/farmacologia
Malation/farmacologia
Permetrina/farmacologia
[Mh] Termos MeSH secundário: Animais
Relação Dose-Resposta a Droga
Feminino
Controle de Mosquitos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Insecticides); 509F88P9SZ (Permethrin); U5N7SU872W (Malathion)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170920
[Lr] Data última revisão:
170920
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170420
[St] Status:MEDLINE
[do] DOI:10.1111/mve.12236


  10 / 2016 MEDLINE  
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[PMID]:28405693
[Au] Autor:Heidar H; Seyed Taghi Omid N; Abbasali Z
[Ad] Endereço:School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran. h_hemmaty62@ut.ac.ir.
[Ti] Título:Monitoring Organophosphorous Pesticides Residues in the Shahid Rajaei Dam Reservoir, Sari, Iran.
[So] Source:Bull Environ Contam Toxicol;98(6):791-797, 2017 Jun.
[Is] ISSN:1432-0800
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Levels of eight different types of organophosphorous pesticides in water samples from different parts of the Shahid Rajaei dam reservoir in north of Iran were monitored. Water samples were collected from different locations of the reservoir in June, July and September of 2015 and in February 2016. Water samples were extracted with dichloromethane solvent and quantified using gas chromatography and mass spectrometry analyses. The results showed that all pesticides were detected for all periods and include dichlorvos, trifluralin, diazinon, methyl parathion, fenitrothion, malathion, profenofos and ethion. The highest concentrations were found in the summer that is related to malathion (on average 0.78 µg L ). In midwinter, no pesticide residues were detected. The results showed that concentration of single and total pesticides for all stations were greater than the maximum contamination level of the European Economic Commission.
[Mh] Termos MeSH primário: Monitoramento Ambiental/métodos
Resíduos de Praguicidas/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Cromatografia Gasosa
Diazinon/análise
Irã (Geográfico)
Malation/análise
Espectrometria de Massas
Compostos Organotiofosforados
Praguicidas/análise
Centrais Elétricas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Organothiophosphorus Compounds); 0 (Pesticide Residues); 0 (Pesticides); 0 (Water Pollutants, Chemical); 2TI07NO12Y (ethion); U5N7SU872W (Malathion); YUS1M1Q929 (Diazinon)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170719
[Lr] Data última revisão:
170719
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170414
[St] Status:MEDLINE
[do] DOI:10.1007/s00128-017-2080-z



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