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https://www.readbyqxmd.com/read/27912787/a-comparative-laboratory-trial-evaluating-the-immediate-efficacy-of-fluralaner-afoxolaner-sarolaner-and-imidacloprid%C3%A2-%C3%A2-permethrin-against-adult-rhipicephalus-sanguineus-sensu-lato-ticks-attached-to-dogs
#1
Federica Burgio, Leon Meyer, Rob Armstrong
BACKGROUND: Acaricides are used to treat and prevent tick infestations, and a common clinical scenario is to administer an acaricide on observing an attached tick. Consequently, immediate acaricidal efficacy (onset of activity and speed of kill) results are clinically valuable. This study evaluated the immediate efficacy of four commercially available acaricides against adult Rhipicephalus sanguineus (sensu lato). METHODS: Forty dogs were blocked on hair length and tick carrying capacity, then randomly assigned to receive one of four treatments (fluralaner, sarolaner, imidacloprid + permethrin, or afoxolaner) or left untreated as controls...
December 3, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27905919/susceptibility-of-anopheles-gambiae-to-insecticides-used-for-malaria-vector-control-in-rwanda
#2
Emmanuel Hakizimana, Corine Karema, Dunia Munyakanage, Gad Iranzi, John Githure, Jon Eric Tongren, Willem Takken, Agnes Binagwaho, Constantianus J M Koenraadt
BACKGROUND: The widespread emergence of resistance to pyrethroids is a major threat to the gains made in malaria control. To monitor the presence and possible emergence of resistance against a variety of insecticides used for malaria control in Rwanda, nationwide insecticide resistance surveys were conducted in 2011 and 2013. METHODS: Larvae of Anopheles gambiae sensu lato mosquitoes were collected in 12 sentinel sites throughout Rwanda. These were reared to adults and analysed for knock-down and mortality using WHO insecticide test papers with standard diagnostic doses of the recommended insecticides...
December 1, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27894851/effectiveness-of-insecticide-treated-bednets-in-malaria-prevention-in-haiti-a-case-control-study
#3
Laura C Steinhardt, Yvan St Jean, Daniel Impoinvil, Kimberly E Mace, Ryan Wiegand, Curtis S Huber, Jean Semé Fils Alexandre, Joseph Frederick, Emery Nkurunziza, Samuel Jean, Brian Wheeler, Ellen Dotson, Laurence Slutsker, S Patrick Kachur, John W Barnwell, Jean Frantz Lemoine, Michelle A Chang
BACKGROUND: Insecticide-treated bednets (ITNs) are effective in preventing malaria where vectors primarily bite indoors and late at night, but their effectiveness is uncertain where vectors bite outdoors and earlier in the evening. We studied the effectiveness of ITNs following a mass distribution in Haiti from May to September, 2012, where the Anopheles albimanus vector bites primarily outdoors and often when people are awake. METHODS: In this case-control study, we enrolled febrile patients presenting to outpatient departments at 17 health facilities throughout Haiti from Sept 4, 2012, to Feb 27, 2014, who were tested with malaria rapid diagnostic tests (RDTs), and administered questionnaires on ITN use and other risk factors...
November 25, 2016: Lancet Global Health
https://www.readbyqxmd.com/read/27892872/fern-synthesized-silver-nanocrystals-towards-a-new-class-of-mosquito-oviposition-deterrents
#4
Rajapandian Rajaganesh, Kadarkarai Murugan, Chellasamy Panneerselvam, Sudalaimani Jayashanthini, Al Thbiani Aziz, Mathath Roni, Udaiyan Suresh, Subrata Trivedi, Hasibur Rehman, Akon Higuchi, Marcello Nicoletti, Giovanni Benelli
Mosquitoes act as vectors of devastating pathogens and parasites, representing a key threat for millions of humans and animals worldwide. Eco-friendly control tools are urgently required. We proposed a novel method of fern-mediated biosynthesis of silver nanoparticles (AgNP) using Dicranopteris linearis, acting as a reducing and capping agent. AgNP were characterized by UV-vis spectroscopy, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), zeta potential and particle size analysis...
September 17, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/27879074/s1-guidelines-on-the-diagnosis-and-treatment-of-scabies-short-version
#5
Cord Sunderkötter, Hermann Feldmeier, Regina Fölster-Holst, Bertram Geisel, Sabine Klinke-Rehbein, Alexander Nast, Sandra Philipp, Bernhardt Sachs, Julia Stingl, Johanna Stoevesandt, Henning Hamm
The goals of this German guideline are the improvement of diagnosis and therapy of scabies, the implementation of a coordinated action in outbreaks of scabies, and the control of this infestation in large migration or refugee flows.Sarcoptes scabiei var. hominis is transmitted by direct skin-to-skin contact of sufficient duration. The infectivity of female mites when removed from patients does not exceed 48 hours at room temperature (21°C) and relative humidity of 40-80%. The risk of infection rises proportionally to the number of mites on the skin and is particularly high in crusted scabies...
November 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/27878321/do-varying-aquatic-plant-species-affect-phytoplankton-and-crustacean-responses-to-a-nitrogen-permethrin-mixture
#6
Richard E Lizotte, Matthew T Moore
Hydraulically connected wetland microcosms vegetated with either Typha latifolia or Myriophyllum aquaticum were amended with an NH4NO3 and permethrin mixture to assess the effectiveness of both plant species in mitigating effects of the pollutant mixture on phytoplankton (as chlorophyll a) and Hyalella azteca. Phytoplankton grew in response to increased NH4NO3 in the presence of all plant species, but was unaffected by exposure to permethrin. H. azteca responses occurred rapidly (0.17 days), was mitigated within 1-2 days, and aqueous toxicity was unaffected by plant species type...
November 22, 2016: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/27876050/studies-on-mosquito-biting-risk-among-migratory-rice-farmers-in-rural-south-eastern-tanzania-and-development-of-a-portable-mosquito-proof-hut
#7
Johnson K Swai, Marceline F Finda, Edith P Madumla, Godfrey F Lingamba, Irene R Moshi, Mohamed Y Rafiq, Silas Majambere, Fredros O Okumu
BACKGROUND: Subsistence rice farmers in south-eastern Tanzania are often migratory, spending weeks or months tending to crops in distant fields along the river valleys and living in improvised structures known as Shamba huts, not fully protected from mosquitoes. These farmers also experience poor access to organized preventive and curative services due to long distances. Mosquito biting exposure in these rice fields, relative to main village residences was assessed, then a portable mosquito-proof hut was developed and tested for protecting these migratory farmers...
November 22, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27876046/increasing-insecticide-resistance-in-anopheles-funestus-and-anopheles-arabiensis-in-malawi-2011-2015
#8
Themba Mzilahowa, Martin Chiumia, Rex B Mbewe, Veronica T Uzalili, Madalitso Luka-Banda, Anna Kutengule, Don P Mathanga, Doreen Ali, John Chiphwanya, John Zoya, Shadreck Mulenga, Wilfred Dodoli, Jennifer Bergeson-Lockwood, Peter Troell, Jessica Oyugi, Kim Lindblade, John E Gimnig
BACKGROUND: Susceptibility of principal Anopheles malaria vectors to common insecticides was monitored over a 5-year period across Malawi to inform and guide the national malaria control programme. METHODS: Adult blood-fed Anopheles spp. and larvae were collected from multiple sites in sixteen districts across the country between 2011 and 2015. First generation (F1) progeny aged 2-5 days old were tested for susceptibility, using standard WHO procedures, against pyrethroids (permethrin and deltamethrin), carbamates (bendiocarb and propoxur), organophosphates (malathion and pirimiphos-methyl) and an organochlorine (DDT)...
November 22, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27876039/evidence-of-a-multiple-insecticide-resistance-in-the-malaria-vector-anopheles-funestus-in-south-west-nigeria
#9
Rousseau J Djouaka, Seun M Atoyebi, Genevieve M Tchigossou, Jacob M Riveron, Helen Irving, Romaric Akoton, Michael O Kusimo, Adekunle A Bakare, Charles S Wondji
BACKGROUND: Knowing the extent and spread of insecticide resistance in malaria vectors is vital to successfully manage insecticide resistance in Africa. This information in the main malaria vector, Anopheles funestus sensu stricto, is completely lacking in the most populous country in Africa, Nigeria. This study reports the insecticide susceptibility status and the molecular basis of resistance of An. funestus as well as its involvement in malaria transmission in Akaka-Remo, a farm settlement village in southwest Nigeria...
November 22, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27862092/assessment-of-the-anti-feeding-and-insecticidal-effects-of-the-combination-of-dinotefuran-permethrin-and-pyriproxyfen-vectra-%C3%A2-3d-against-triatoma-infestans-on-rats
#10
D Tahir, B Davoust, M Varloud, J-M Berenger, D Raoult, L Almeras, P Parola
This study, based on the rat model, was designed to explore the anti-feeding and insecticidal efficacy of a topical ectoparasiticide, dinotefuran-permethrin-pyriproxyfen (DPP), against Triatoma infestans (Hemiptera: Reduviidae), a vector of Trypanosoma cruzi (Trypanosomatida: Trypanosomatidae), for which dogs are domestic reservoir hosts. Twenty rats were divided into two equal groups: untreated and treated. Each rat was exposed under sedation to 16 T. infestans of mixed life stages for 1 h on days 1, 7, 14, 21 and 28 post-treatment...
November 9, 2016: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/27843919/rosacea-management
#11
REVIEW
Manal Abokwidir, Steven R Feldman
BACKGROUND: Rosacea is a chronic inflammatory skin condition associated with four distinct subtypes: erythematotelangiectatic, papulopustular, phymatous, and ocular. PURPOSE: To review the different kinds of management for all subtypes. METHODS: We divided rosacea management into three main categories: patient education, skin care, and pharmacological/procedural interventions. RESULTS: Flushing is better prevented rather than treated, by avoiding specific triggers, decreasing transepidermal water loss by moisturizers, and blocking ultraviolet light...
September 2016: Skin Appendage Disorders
https://www.readbyqxmd.com/read/27826104/in-vivo-and-in-silico-studies-to-identify-mechanisms-associated-with-nurr1-modulation-following-early-life-exposure-to-permethrin-in-rats
#12
Donatella Fedeli, Maura Montani, Laura Bordoni, Roberta Galeazzi, Cinzia Nasuti, Luísa Correia-Sá, Valentina F Domingues, Maini Jayant, Vani Brahmachari, Luca Massaccesi, Emiliano Laudadio, Rosita Gabbianelli
The present work was designed to study the mechanisms associated with Nurr1 modulation following early life permethrin (PERM) treatment during rat's life span. Here we demonstrate that PERM exposure in rats, at a dose close to No Observed Adverse Effect Level (NOAEL) for 15days during neonatal brain development leads to its accumulation long after exposure. In striatum from adolescent rats we detected an increase in DNA methyltransferases (DNMTs) such as DNMT1, DNMT3a, Tyrosine hydroxylase, monomeric and aggregated α-synuclein protein levels...
November 5, 2016: Neuroscience
https://www.readbyqxmd.com/read/27823867/multiple-mitigation-mechanisms-effects-of-submerged-plants-on-the-toxicity-of-nine-insecticides-to-aquatic-animals
#13
William R Brogan, Rick A Relyea
Understanding the processes that regulate contaminant impacts in nature is an increasingly important challenge. For insecticides in surface waters, the ability of aquatic plants to sorb, or bind, hydrophobic compounds has been identified as a primary mechanism by which toxicity can be mitigated (i.e. the sorption-based model). However, recent research shows that submerged plants can also rapidly mitigate the toxicity of the less hydrophobic insecticide malathion via alkaline hydrolysis (i.e. the hydrolysis-based model) driven by increased water pH resulting from photosynthesis...
January 2017: Environmental Pollution
https://www.readbyqxmd.com/read/27809871/insecticide-susceptibility-of-anopheles-stephensi-to-ddt-and-current-insecticides-in-an-elimination-area-in-iran
#14
Mehdi Zare, Moussa Soleimani-Ahmadi, Sayed Hossein Davoodi, Alireza Sanei-Dehkordi
BACKGROUND: Iran has recently initiated a malaria elimination program with emphasis on vector control strategies which are heavily reliant on indoor residual spraying and long-lasting insecticidal nets. Insecticide resistance seriously threatens the efficacy of vector control strategies. This study was conducted to determine the insecticide susceptibility of Anopheles stephensi to DDT and current insecticides in Jask county as an active malaria focus in southeastern Iran. METHODS: In this study, the anopheline larvae were collected from different aquatic habitats in Jask county and transported to insectarium, fed with sugar and then 3-day-old adults were used for susceptibility tests...
November 4, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27802395/field-evaluation-of-a-new-strategy-to-control-lutzomyia-longipalpis-based-on-simultaneous-application-of-an-adulticide-larvicide-mixture
#15
Laura W Juan, Alejandro Lucia, Raúl A Alzogaray, Ingrid I Steinhorst, Karen López, Matías Pettersen, José Busse, Eduardo N Zerba
Leishmania infantum (syn. chagasi) is the etiologic agent of visceral leishmaniasis in Argentina, and the phlebotomine fly Lutzomyia longipalpis is its main vector. The objective of this study was to evaluate the effectiveness of Dragon Max(®), an emulsifiable concentrate formulation containing the pyrethroid permethrin and the larvicide pyriproxyfen, for Lu. longipalpis control under field conditions. The work was conducted in the city of Posadas (Misiones province, Argentina). Comparisons were performed between treated and untreated peridomiciles with poultry, which met previously determined criteria for favoring the presence of Lu...
September 2016: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/27800630/essential-oils-enhance-the-toxicity-of-permethrin-against-aedes-aegypti-and-anopheles-gambiae
#16
A D Gross, E J Norris, M J Kimber, L C Bartholomay, J R Coats
Insecticide resistance and growing public concern over the safety and environmental impacts of some conventional insecticides have resulted in the need to discover alternative control tools. Naturally occurring botanically-based compounds are of increased interest to aid in the management of mosquitoes. Susceptible strains of Aedes aegypti (Linnaeus) (Diptera: Culicidae) and Anopheles gambiae (Meigen) (Diptera: Culicidae) were treated with permethrin, a common type-I synthetic pyrethroid, using a discriminate dose that resulted in less than 50% mortality...
November 1, 2016: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/27779927/identification-and-optimization-of-new-leads-for-malaria-vector-control
#17
Ottmar F Hueter, Mark Hoppé, Philip Wege, Peter Maienfisch
A significant proportion of the world's population remains at risk from malaria, and whilst great progress has been made in reducing the number of malaria cases globally through the use of vector control insecticides, these gains are under threat from the emergence of insecticide resistance. The spread of resistance in the vector populations, principally to pyrethroids, is driving the need for the development of new tools for malaria vector control. In order to identify new leads 30,000 compounds from the Syngenta corporate chemical collection were tested in a newly developed screening platform...
October 2016: Chimia
https://www.readbyqxmd.com/read/27756609/early-life-exposure-to-permethrin-a-progressive-animal-model-of-parkinson-s-disease
#18
Cinzia Nasuti, Gloria Brunori, Piera Eusepi, Lisa Marinelli, Roberto Ciccocioppo, Rosita Gabbianelli
INTRODUCTION: Oxidative stress, alpha-synuclein changes, mitochondrial complex I defects and dopamine loss, observed in the striatum of rats exposed to the pesticide permethrin in early life, could represent neuropathological hallmarks of Parkinson's disease (PD). Nevertheless, an animal model of PD should also fulfill criteria of face and predictive validities. This study was designed to: 1) verify dopaminergic status in the striatum and substantia nigra pars compacta; 2) recognize non-motor symptoms; 3) investigate the time-course development of motor disabilities; 4) assess L-Dopa effectiveness on motor symptoms in rats previously exposed to permethrin in early life...
October 15, 2016: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/27756597/do-pyrethroid-resistant-hyalella-azteca-have-greater-bioaccumulation-potential-compared-to-non-resistant-populations-implications-for-bioaccumulation-in-fish
#19
Leslie L Muggelberg, Kara E Huff Hartz, Samuel A Nutile, Amanda D Harwood, Jennifer R Heim, Andrew P Derby, Donald P Weston, Michael J Lydy
The recent discovery of pyrethroid-resistant Hyalella azteca populations in California, USA suggests there has been significant exposure of aquatic organisms to these terrestrially-applied insecticides. Since resistant organisms are able to survive in relatively contaminated habitats they may experience greater pyrethroid bioaccumulation, subsequently increasing the risk of those compounds transferring to predators. These issues were evaluated in the current study following toxicity tests in water with permethrin which showed the 96-h LC50 of resistant H...
January 2017: Environmental Pollution
https://www.readbyqxmd.com/read/27752187/risk-of-transmission-of-viral-haemorrhagic-fevers-and-the-insecticide-susceptibilitystatus-of-aedes-aegypti-linnaeus-in-some-sites-in-accra-ghana
#20
Takashi Suzuki, Joseph H Osei, Akihiro Sasaki, Michelle Adimazoya, Maxwell Appawu, Daniel Boakye, Nobuo Ohta, Samuel Dadzie
BACKGROUND: Dengue is one of the emerging diseases that can mostly only be controlled by vector control since there is no vaccine for the disease. Although, Dengue has not been reported in Ghana, movement of people from neighbouring countries where the disease has been reported can facilitate transmission of the disease. OBJECTIVE: This study was carried on the University of Ghana campus to determine the risk of transmission of viral haemorrhagic fevers and the insecticide susceptibility status of Ae...
September 2016: Ghana Medical Journal
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