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https://www.readbyqxmd.com/read/28810872/-repel-all-biters-an-enhanced-collection-of-endophilic-anopheles-gambiae-and-anopheles-arabiensis-in-cdc-light-traps-from-the-kagera-region-of-tanzania-in-the-presence-of-a-combination-mosquito-net-impregnated-with-piperonyl-butoxide-and-permethrin
#1
Corey LeClair, Judith Cronery, Enock Kessy, Elsa V E Tomás, Yohannes Kulwa, Franklin W Mosha, Mark Rowland, Natacha Protopopoff, J Derek Charlwood
BACKGROUND: Mosquito nets containing synergists designed to overcome metabolic resistance mechanisms in vectors have been developed. These may enhance excitability in the mosquitoes and affect how they respond to CDC light-traps. Investigating the behaviour of vectors of disease in relation to novel mosquito nets is, therefore, essential for the design of sampling and surveillance systems. METHODS: In an initial experiment in Muleba, Tanzania, nine bedrooms from three housing clusters were sampled...
August 15, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28807310/the-sustained-speed-of-kill-of-ticks-rhipicephalus-sanguineus-and-fleas-ctenocephalides-felis-felis-on-dogs-by-a-spot-on-combination-of-fipronil-and-permethrin-effitix-%C3%A2-compared-with-oral-afoxolaner-nexgard-%C3%A2
#2
Dejan Cvejić, Claudia Schneider, Willem Neethling, Klaus Hellmann, Julian Liebenberg, Christelle Navarro
The rapid speed of kill of a spot-on, combination of fipronil-permethrin (Effitix(®), Virbac) was shown against infestations of Rhipicephalus sanguineus and Ctenocephalides felis on dogs. Efficacy was determined against new infestations at weekly intervals for one month after treatment. Dogs were allocated randomly to either an untreated control or to a single administration, given on Day 0, of either topical fipronil-permethrin (6.7-13.4mg/kg and 60-120mg/kg, respectively) or oral afoxolaner (2.72-6.8mg/kg), based on pre-treatment, host-suitability flea counts...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28799652/environmental-exposure-of-the-adult-french-population-to-permethrin
#3
Marie Hermant, Olivier Blanchard, Guillaume Perouel, Guillaume Boulanger, Mathilde Merlo, Virginie Desvignes
This work aims to assess the exposure to permethrin of the adult French population from available contamination measurements of outdoor air, indoor air, and settled dust. Priority is given to the assessment of chronic exposure, given the potential of permethrin to induce cancers and/or endocrine disorders. A statistical method was devised to calculate exposure to permethrin by different pathways (inhalation, indirect dust ingestion, and dermal contact). This method considers anthropometric parameters, the population's space-time budget, and recent methods for calculating dermal exposure...
August 11, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28783773/clinical-inquiry-what-is-the-most-effective-treatment-for-scabies
#4
Jonathon J Campbell, Christopher P Paulson, Joan Nashelsky
Topical permethrin is the most effective treatment for classic scabies (strength of recommendation [SOR]: A, meta-analyses with consistent results). Topical lindane and crotamiton are inferior to permethrin but appear equivalent to each other and benzyl benzoate, sulfur, and natural synergized pyrethrins (SOR: B, limited randomized trials). Although not as effective as topical permethrin, oral ivermectin is an effective treatment compared with placebo (SOR: B, a single small randomized trial). Oral ivermectin may reduce the prevalence of scabies at one year in populations with endemic disease more than topical permethrin (SOR: B, a single randomized trial)...
August 2017: Journal of Family Practice
https://www.readbyqxmd.com/read/28772355/environmentally-relevant-levels-of-%C3%AE-cyhalothrin-fenvalerate-and-permethrin-cause-developmental-toxicity-and-disrupt-endocrine-system-in-zebrafish-danio-rerio-embryo
#5
Quan Zhang, Yi Zhang, Jie Du, Meirong Zhao
Synthetic pyrethroids (SPs) are one of the most widely used pesticides and frequently detected in the aquatic environment. Previous studies have shown that SPs posed high aquatic toxicity, but information on the developmental toxicity and endocrine disruption on zebrafish (Danio rerio) at environmentally relevant concentrations is limited. In this study, zebrafish embryos were employed to examine the adverse effects of λ-cyhalothrin (LCT), fenvalerate (FEN), and permethrin (PM) at 2.5, 10, 25, 125, 500 nM for 96 h...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28768553/comparative-in-vitro-evaluation-of-contact-activity-of-fluralaner-spinosad-phoxim-propoxur-permethrin-and-deltamethrin-against-the-northern-fowl-mite-ornithonyssus-sylviarum
#6
Bradley A Mullens, Amy C Murillo, Hartmut Zoller, Anja R Heckeroth, Faris Jirjis, Annie Flochlay-Sigognault
BACKGROUND: Northern fowl mites (Ornithonyssus sylviarum) are obligate hematophagous ectoparasites of both feral birds and poultry, particularly chicken layers and breeders. They complete their entire life-cycle on infested birds while feeding on blood. Infestations of O. sylviarum are difficult to control and resistance to some chemical classes of acaricides is a growing concern. The contact susceptibility of O. sylviarum to a new active ingredient, fluralaner, was evaluated, as well as other compounds representative of the main chemical classes commonly used to control poultry mite infestations in Europe and the USA...
August 3, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28759566/influence-of-pyrethro%C3%A3-d-treated-bed-net-on-host-seeking-behavior-of-anopheles-gambiae-s-s-carrying-the-kdr-allele
#7
Angélique Porciani, Malal Diop, Nicolas Moiroux, Tatiana Kadoke-Lambi, Anna Cohuet, Fabrice Chandre, Laurent Dormont, Cédric Pennetier
The use of long lasting insecticide nets (LLINs) treated with pyrethroïd is known for its major contribution in malaria control. However, LLINs are suspected to induce behavioral changes in malaria vectors, which may in turn drastically affect their efficacy against Plasmodium sp. transmission. In sub Saharan Africa, where malaria imposes the heaviest burden, the main malaria vectors are widely resistant to pyrethroïds, the insecticide family used on LLINs, which also threatens LLIN efficiency. There is therefore a crucial need for deciphering how insecticide-impregnated materials might affect the host-seeking behavior of malaria vectors in regards to insecticide resistance...
2017: PloS One
https://www.readbyqxmd.com/read/28757463/permethrin-alters-glucose-metabolism-in-conjunction-with-high-fat-diet-by-potentiating-insulin-resistance-and-decreases-voluntary-activities-in-female-c57bl-6j-mice
#8
Xiao Xiao, Yoo Kim, Daeyoung Kim, Kyong Sup Yoon, John M Clark, Yeonhwa Park
Permethrin, a type 1 pyrethroid insecticide, was previously reported to promote adipogenesis in 3T3-L1 adipocytes and insulin resistance in C2C12 muscle cells; however, the effects of permethrin exposure on glucose and lipid metabolisms in vivo remain unknown. The purpose of this study was to investigate the effects of permethrin exposure on glucose and lipid homeostasis as well as voluntary movement in female mice in response to dietary fat. We tested three doses of permethrin (50, 500, & 5000 μg/kg body weight/day) in low fat diet-fed (4% w/w of diet) and high fat diet-fed (20% w/w of diet) female C57BL/6 J mice for twelve weeks...
July 28, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28754599/bioassays-to-evaluate-non-contact-spatial-repellency-contact-irritancy-and-acute-toxicity-of-permethrin-treated-clothing-against-nymphal-ixodes-scapularis-ticks
#9
Lars Eisen, Dominic Rose, Robert Prose, Nicole E Breuner, Marc C Dolan, Karen Thompson, Neeta Connally
Summer-weight clothing articles impregnated with permethrin are available as a personal protective measure against human-biting ticks in the United States. However, very few studies have addressed the impact of contact with summer-weight permethrin-treated textiles on tick vigor and behavior. Our aim was to generate new knowledge of how permethrin-treated textiles impact nymphal Ixodes scapularis ticks, the primary vectors in the eastern United States of the causative agents of Lyme disease, human anaplasmosis, and human babesiosis...
July 1, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28743278/status-of-insecticide-resistance-in-anopheles-mosquitoes-in-ubon-ratchathani-province-northeastern-thailand
#10
Anchana Sumarnrote, Hans J Overgaard, Nattapol Marasri, Bénédicte Fustec, Kanutcharee Thanispong, Theeraphap Chareonviriyaphap, Vincent Corbel
BACKGROUND: Malaria is common in hilly, forested areas along national borders in Southeast Asia. Insecticide resistance in malaria vectors has been detected in a few countries in the Greater Mekong sub-region (GMS), representing a threat to malaria control and prevention. This study aims to determine the insecticide resistance status of Anopheles mosquitoes in Ubon Ratchathani province, northeastern Thailand, where increasing number of malaria cases were reported recently. METHODS: Mosquitoes were collected in 2013-2015 using human landing and cattle bait collections in six sites during both the rainy and dry seasons...
July 25, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28742096/insecticide-resistance-is-mediated-by-multiple-mechanisms-in-recently-introduced-aedes-aegypti-from-madeira-island-portugal
#11
Gonçalo Seixas, Linda Grigoraki, David Weetman, José Luís Vicente, Ana Clara Silva, João Pinto, John Vontas, Carla Alexandra Sousa
BACKGROUND: Aedes aegypti is a major mosquito vector of arboviruses, including dengue, chikungunya and Zika. In 2005, Ae. aegypti was identified for the first time in Madeira Island. Despite an initial insecticide-based vector control program, the species expanded throughout the Southern coast of the island, suggesting the presence of insecticide resistance. Here, we characterized the insecticide resistance status and the underlying mechanisms of two populations of Ae. aegypti from Madeira Island, Funchal and Paúl do Mar...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28738799/prevalence-of-head-lice-infestation-and-pediculicidal-effect-of-permethrine-shampoo-in-primary-school-girls-in-a-low-income-area-in-southeast-of-iran
#12
Moussa Soleimani-Ahmadi, Seyed Aghil Jaberhashemi, Mehdi Zare, Alireza Sanei-Dehkordi
BACKGROUND: Head lice infestation is a common public health problem that is most prevalent in primary school children throughout the world, especially in developing countries including different parts of Iran. This study aimed to determine the prevalence and risk factors associated with head lice infestation and pediculicidal effect of 1% permethrin shampoo in primary schools girls of Bashagard County, one of the low socioeconomic areas in southeast of Iran. METHODS: In this interventional study six villages with similar demographical situations were selected and randomly assigned into intervention and control areas...
July 24, 2017: BMC Dermatology
https://www.readbyqxmd.com/read/28735887/effect-of-pyrethroids-on-female-genital-system-review
#13
REVIEW
Elena Marettova, Milan Maretta, Jaroslav Legáth
Pyrethroids have been associated with a range of toxicological effects on various organs in animals.Recent animal studies suggest that neurodevelopmental, reproductive, and immunological effects may result following exposure to some pyrethroids at levels below those that induce overt signs of neurotoxicity. A variety of pyrethroids and their metabolites have the potential to affect the reproductive system. Dose-dependent effects on reproduction are associated with exposure across pyrethroid types. In mammals, permethrin and tetramethrin and cypermethrin have been found to be associated with adverse effects at high doses...
July 16, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28731614/economic-injury-levels-and-economic-thresholds-for-leptoglossus-zonatus-dallas-hemiptera-coreidae-infesting-seed-maize
#14
Josemar Foresti, Cristina S Bastos, Flávio L Fernandes, Paulo R da Silva
BACKGROUND: Although Leptoglossus zonatus is considered a secondary pest of maize grown for grain, when grown for seed, this pest can cause significant economic damage. There are no records of management recommendations for this pest. The objectives of this work were to quantify losses caused by L. zonatus to different genotypes used for seed maize production and to estimate the acute toxicity of select insecticides to L. zonatus using different application technologies. The ultimate goal was to calculate economic injury levels (EILs) and develop economic thresholds (ETs) for L...
July 21, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28722808/an-examination-of-the-effect-of-aerosolized-permanone-insecticide-on-zebra-finch-susceptibility-to-west-nile-virus
#15
Mark D Jankowski, Murray E Moore, Erik K Hofmeister
West Nile virus is primarily maintained cryptically primarily in avian (Passerine) populations where it is transmitted by Culex spp. mosquitoes. Mosquito control measures currently include physical activities to reduce mosquito breeding sites, the application of mosquito larvicides, or aerosolized insecticides to kill adults (adulticides) when arboviral diseases such as West Nile virus (WNV) or Zika virus are detected in mosquito populations. Organochlorine, organohosphorus, carbamate and pyrethroid insecticides are often used...
July 19, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28722781/contribution-of-pyrethroids-in-large-urban-rivers-to-sediment-toxicity-assessed-with-benthic-invertebrates-chironomus-dilutus-a-case-study-in-south-china
#16
Fei Cheng, Huizhen Li, Hongxue Qi, Qian Han, Jing You
The importance of pyrethroids as potential stressors to benthic organisms has gradually become evident in urban creeks, however, the occurrence and toxicity of sediment-associated pyrethroids are rarely studied in large rivers. In this context, ten sediments from a large urban river (Guangzhou reach of the Pearl River in China) were assessed for pyrethroid occurrence and sediment toxicity to the benthic invertebrate Chironomus dilutus. Half of the sediments exhibited lethality to C. dilutus in a 10-d exposure and all survived midges showed significant change of enzymatic activity...
July 19, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28714540/anti-feeding-and-insecticidal-efficacy-of-a-topical-administration-of-dinotefuran-pyriproxyfen-permethrin-spot-on-vectra%C3%A2-3d-on-mice-against-stegomyia-albopicta-%C3%A2-aedes-albopictus
#17
D Tahir, B Davoust, L Almeras, J M Berenger, M Varloud, P Parola
An ectoparasiticide combining three active ingredients [dinotefuran, permethrin and pyriproxyfen (DPP)] was used in mice in an experiment designed to evaluate its anti-feeding and insecticidal efficacy against Stegomyia albopicta (= Aedes albopictus) (Diptera: Culicidae) mosquitoes. Twenty-two adult mice were randomly allocated into two groups consisting of an untreated control group and a DPP-treated group. Mice were exposed individually for 1 h to a mean ± standard deviation of 27 ± 2 starved female mosquitoes on days 1, 7, 14, 21 and 28 post-treatment...
July 17, 2017: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/28708331/negative-chemical-ionization-gas-chromatography-mass-spectrometry-of-transfluthrin-in-rat-plasma-and-brain
#18
Shirin Hooshfar, Tanzir B Mortuza, Clinton A Rogers, Michael R Linzey, Darren R Gullick, James V Bruckner, Catherine A White, Michael G Bartlett
RATIONALE: Transfluthrin is a relatively non-toxic rapid-acting synthetic pyrethroid insecticide. It is widely used in household and hygiene products. A sensitive and accurate bioanalytical method is required for quantification of its concentration in plasma and its potential target organ, the brain for studies to assess its health effects and toxicokinetics in mammals. METHODS: The samples were prepared by liquid-liquid extraction. Gas chromatography mass spectrometry (GC/MS) analysis was performed for the determination of transfluthrin in biological samples with an overall method run time of 15 min...
July 14, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28681389/untargeted-metabolomics-of-neuronal-cell-culture-a-model-system-for-the-toxicity-testing-of-insecticide-chemical-exposure
#19
Sarah Hayton, Garth L Maker, Ian Mullaney, Robert D Trengove
Toxicity testing is essential for the protection of human health from exposure to toxic environmental chemicals. As traditional toxicity testing is carried out using animal models, mammalian cell culture models are becoming an increasingly attractive alternative to animal testing. Combining the use of mammalian cell culture models with screening-style molecular profiling technologies, such as metabolomics, can uncover previously unknown biochemical bases of toxicity. We have used a mass spectrometry-based untargeted metabolomics approach to characterize for the first time the changes in the metabolome of the B50 cell line, an immortalised rat neuronal cell line, following acute exposure to two known neurotoxic chemicals that are common environmental contaminants; the pyrethroid insecticide permethrin and the organophosphate insecticide malathion...
July 6, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28679151/non-target-evaluation-of-contaminants-in-honey-bees-and-pollen-samples-by-gas-chromatography-time-of-flight-mass-spectrometry
#20
E Hakme, A Lozano, M M Gómez-Ramos, M D Hernando, A R Fernández-Alba
This work presents a non-targeted screening approach for the detection and quantitation of contaminants in bees and pollen, collected from the same hive, by GC-EI-ToF-MS. It consists of a spectral library datasets search using a compound database followed by a manual investigation and analytical standard confirmation together with semi-quantitation purposes. Over 20% of the compounds found automatically by the library search could not be confirmed manually. This number of false positive detections was mainly a consequence of an inadequate ion ratio criterion (±30%), not considered in the automatic searching procedure...
October 2017: Chemosphere
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