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Pesquisa : B01.050.500.131.617.690.060.716 [Categoria DeCS]
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  1 / 841 MEDLINE  
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[PMID]:28931077
[Au] Autor:Amanzougaghene N; Fenollar F; Sangaré AK; Sissoko MS; Doumbo OK; Raoult D; Mediannikov O
[Ad] Endereço:Aix Marseille Univ, CNRS, IRD, INSERM, AP-HM, URMITE, IHU - Méditerranée Infection, Marseille, France.
[Ti] Título:Detection of bacterial pathogens including potential new species in human head lice from Mali.
[So] Source:PLoS One;12(9):e0184621, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In poor African countries, where no medical and biological facilities are available, the identification of potential emerging pathogens of concern at an early stage is challenging. Head lice, Pediculus humanus capitis, have a short life, feed only on human blood and do not transmit pathogens to their progeny. They are, therefore, a perfect tool for the xenodiagnosis of current or recent human infection. This study assessed the occurrence of bacterial pathogens from head lice collected in two rural villages from Mali, where a high frequency of head lice infestation had previously been reported, using molecular methods. Results show that all 600 head lice, collected from 117 individuals, belonged to clade E, specific to West Africa. Bartonella quintana, the causative agent of trench fever, was identified in three of the 600 (0.5%) head lice studied. Our study also shows, for the first time, the presence of the DNA of two pathogenic bacteria, namely Coxiella burnetii (5.1%) and Rickettsia aeschlimannii (0.6%), detected in human head lice, as well as the DNA of potential new species from the Anaplasma and Ehrlichia genera of unknown pathogenicity. The finding of several Malian head lice infected with B. quintana, C. burnetii, R. aeschlimannii, Anaplasma and Ehrlichia is alarming and highlights the need for active survey programs to define the public health consequences of the detection of these emerging bacterial pathogens in human head lice.
[Mh] Termos MeSH primário: Bartonella quintana/genética
DNA Bacteriano/genética
Insetos Vetores/microbiologia
Infestações por Piolhos/diagnóstico
Pediculus/microbiologia
Dermatoses do Couro Cabeludo/diagnóstico
Febre das Trincheiras/transmissão
[Mh] Termos MeSH secundário: Animais
Bartonella quintana/classificação
Bartonella quintana/isolamento & purificação
DNA Bacteriano/classificação
DNA Bacteriano/isolamento & purificação
Seres Humanos
Infestações por Piolhos/microbiologia
Mali
Filogenia
Reação em Cadeia da Polimerase
Dermatoses do Couro Cabeludo/microbiologia
Febre das Trincheiras/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Bacterial)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171017
[Lr] Data última revisão:
171017
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170921
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0184621


  2 / 841 MEDLINE  
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[PMID]:28760358
[Au] Autor:Gandhi PR; Jayaseelan C; Mary RR; Mathivanan D; Suseem SR
[Ad] Endereço:Division of Nanobiotechnology, Department of Zoology, Auxilium College (Autonomous), Gandhi Nagar, 632 006, Vellore District, Tamil Nadu, India.
[Ti] Título:Acaricidal, pediculicidal and larvicidal activity of synthesized ZnO nanoparticles using Momordica charantia leaf extract against blood feeding parasites.
[So] Source:Exp Parasitol;181:47-56, 2017 Oct.
[Is] ISSN:1090-2449
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The aim of the present study was to evaluate the acaricidal, pediculicidal and larvicidal effect of synthesized zinc oxide nanoparticles (ZnO NPs) using Momordica charantia leaf extract against the larvae of Rhipicephalus (Boophilus) microplus, adult of Pediculus humanus capitis, and the larvae of Anopheles stephensi, Culex quinquefasciatus. The ZnO NPs were characterized by using UV, XRD, FTIR and SEM-EDX. The SEM image confirms that the synthesized nanoparticles were spherical in shape with a size of 21.32 nm. The results of GC-MS analysis indicates the presence of the major compound of Nonacosane (C H ) in the M. charantia leaf extract. Cattle tick, head lice and mosquito larvae were exposed to a varying concentrations of the synthesized ZnO NPs and M. charantia leaf extract for 24 h. Compared to the leaf aqueous extract, biosynthesized ZnO NPs showed higher toxicity against R. microplus, P. humanus capitis, An. stephensi, and Cx. Quinquefasciatus with the LC values of 6.87, 14.38, 5.42, and 4.87 mg/L, respectively. The findings revealed that synthesized ZnO NPs possess excellent anti-parasitic activity. These results suggest that the green synthesized ZnO NPs has the potential to be used as an ideal ecofriendly approach for the control of R. microplus, P. humanus capitis and the mosquito larvae of An. Stephensi and Cx. quinquefasciatus.
[Mh] Termos MeSH primário: Acaricidas/farmacologia
Culicidae/efeitos dos fármacos
Momordica charantia/química
Pediculus/efeitos dos fármacos
Rhipicephalus/efeitos dos fármacos
Óxido de Zinco/farmacologia
[Mh] Termos MeSH secundário: Acaricidas/isolamento & purificação
Animais
Anopheles/efeitos dos fármacos
Bioensaio
Criança
Pré-Escolar
Culex/efeitos dos fármacos
Relação Dose-Resposta a Droga
Feminino
Cromatografia Gasosa-Espectrometria de Massas
Seres Humanos
Larva/efeitos dos fármacos
Nanopartículas Metálicas/química
Nanopartículas Metálicas/ultraestrutura
Microscopia Eletrônica de Varredura
Extratos Vegetais/isolamento & purificação
Extratos Vegetais/farmacologia
Folhas de Planta/química
Espectrometria por Raios X
Óxido de Zinco/isolamento & purificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acaricides); 0 (Plant Extracts); SOI2LOH54Z (Zinc Oxide)
[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:170802
[St] Status:MEDLINE


  3 / 841 MEDLINE  
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[PMID]:28549171
[Au] Autor:Firooziyan S; Sadaghianifar A; Taghilou B; Galavani H; Ghaffari E; Gholizadeh S
[Ad] Endereço:Cellular and Molecular Research Center, Urmia University of Medical Sciences, Urmia 5756115111, Iran.
[Ti] Título:Identification of Novel Voltage-Gated Sodium Channel Mutations in Human Head and Body Lice (Phthiraptera: Pediculidae).
[So] Source:J Med Entomol;54(5):1337-1343, 2017 Sep 01.
[Is] ISSN:1938-2928
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In recent years, the increase of head louse infestation in Iran (7.4%) and especially in West-Azerbaijan Province (248%) has raised the hypothesis of insecticide resistance development. There are different mechanisms of resistance to various groups of insecticides, and knockdown resistance (kdr) is a prominent mechanism of resistance to pyrethroids, an insecticide group which is used conventionally for pediculosis control. For detection of kdr-type well-known amino acid substitutions (M815I-T917I-L920F) and additional sodium channel mutations potentially associated with kdr resistance in head and body lice, louse populations were collected from West-Azerbaijan and Zanjan Provinces of Iran. Six novel mutations were found to be located in the IIS1-2 extracellular loop (H813P) and IIS5 (I927F, L928A, R929V, L930M, and L932M) of the α-subunit. Genotyping results showed that all specimens (100%) have at least one of these or the well-known mutations. Therefore, the presence of kdr-related and novel mutations in the sodium channel is likely to be the reason for the frequent use of pyrethroid insecticides due to treatment failure against lice. Further studies are now required to evaluate the prevalence of the kdr-like mutant allele for monitoring of insecticide resistance and the management of head and body lice in other provinces of the country.
[Mh] Termos MeSH primário: Proteínas de Insetos/genética
Resistência a Inseticidas
Pediculus/efeitos dos fármacos
Pediculus/genética
Piretrinas/farmacologia
Canais de Sódio Disparados por Voltagem/genética
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Animais
Proteínas de Insetos/metabolismo
Irã (Geográfico)
Mutação
Pediculus/metabolismo
Alinhamento de Sequência
Canais de Sódio Disparados por Voltagem/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Insect Proteins); 0 (Pyrethrins); 0 (Voltage-Gated Sodium Channels)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170527
[St] Status:MEDLINE
[do] DOI:10.1093/jme/tjx107


  4 / 841 MEDLINE  
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[PMID]:28419279
[Au] Autor:Boyd BM; Allen JM; Nguyen NP; Vachaspati P; Quicksall ZS; Warnow T; Mugisha L; Johnson KP; Reed DL
[Ad] Endereço:Department of Entomology, University of Georgia Athens, Athens, GA.
[Ti] Título:Primates, Lice and Bacteria: Speciation and Genome Evolution in the Symbionts of Hominid Lice.
[So] Source:Mol Biol Evol;34(7):1743-1757, 2017 Jul 01.
[Is] ISSN:1537-1719
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Insects with restricted diets rely on symbiotic bacteria to provide essential metabolites missing in their diet. The blood-sucking lice are obligate, host-specific parasites of mammals and are themselves host to symbiotic bacteria. In human lice, these bacterial symbionts supply the lice with B-vitamins. Here, we sequenced the genomes of symbiotic and heritable bacterial of human, chimpanzee, gorilla, and monkey lice and used phylogenomics to investigate their evolutionary relationships. We find that these symbionts have a phylogenetic history reflecting the louse phylogeny, a finding contrary to previous reports of symbiont replacement. Examination of the highly reduced symbiont genomes (0.53-0.57 Mb) reveals much of the genomes are dedicated to vitamin synthesis. This is unchanged in the smallest symbiont genome and one that appears to have been reorganized. Specifically, symbionts from human lice, chimpanzee lice, and gorilla lice carry a small plasmid that encodes synthesis of vitamin B5, a vitamin critical to the bacteria-louse symbiosis. This plasmid is absent in an old world monkey louse symbiont, where this pathway is on its primary chromosome. This suggests the unique genomic configuration brought about by the plasmid is not essential for symbiosis, but once obtained, it has persisted for up to 25 My. We also find evidence that human, chimpanzee, and gorilla louse endosymbionts have lost a pathway for synthesis of vitamin B1, whereas the monkey louse symbiont has retained this pathway. It is unclear whether these changes are adaptive, but they may point to evolutionary responses of louse symbionts to shifts in primate biology.
[Mh] Termos MeSH primário: Anoplura/genética
Pediculus/genética
Simbiose/genética
[Mh] Termos MeSH secundário: Animais
Bactérias/genética
Evolução Biológica
Evolução Molecular
Genoma Bacteriano
Genômica/métodos
Hominidae/genética
Seres Humanos
Pan troglodytes/genética
Filogenia
Plasmídeos/genética
Primatas/genética
Análise de Sequência de DNA/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171031
[Lr] Data última revisão:
171031
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170419
[St] Status:MEDLINE
[do] DOI:10.1093/molbev/msx117


  5 / 841 MEDLINE  
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[PMID]:28399311
[Au] Autor:Eremeeva ME; Capps D; Winful EB; Warang SS; Braswell SE; Tokarevich NK; Bonilla DL; Durden LA
[Ad] Endereço:Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA 30458.
[Ti] Título:Molecular Markers of Pesticide Resistance and Pathogens in Human Head Lice (Phthiraptera: Pediculidae) From Rural Georgia, USA.
[So] Source:J Med Entomol;54(4):1067-1072, 2017 Jul 01.
[Is] ISSN:1938-2928
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Although the head louse, Pediculus humanus capitis De Geer, and body louse, Pediculus humanus humanus L., both have a worldwide distribution, the occurrence of head louse pediculosis appears to be more prevalent in modern societies despite systematic use of various pediculicides. This study tested head lice collected in rural Georgia and body lice collected in Russia for the prevalence of a kdr-biomarker that is associated with permethrin resistance. This study also screened lice for the presence of DNA from Bartonella quintana and Acinetobacter species. The kdr-permethrin resistance biomarker for the T917I mutation was detected by RFLP and PCR in 99.9% of head lice tested from Georgia, whereas only 2.9% of body lice from Russia tested positive for this kdr biomarker. DNA of B. quintana was detected in 10.3% of head lice from Georgia, whereas 84.8% of body lice from Russia tested positive. Acinetobacter DNA was detected in 80.8% (95% CI, 68-89%) of head lice from Georgia and all body lice from Russia tested.
[Mh] Termos MeSH primário: Resistência a Inseticidas
Inseticidas/farmacologia
Pediculus/efeitos dos fármacos
Permetrina/farmacologia
[Mh] Termos MeSH secundário: Acinetobacter/isolamento & purificação
Animais
Bartonella quintana/isolamento & purificação
California
Criança
Pré-Escolar
DNA Bacteriano/análise
Feminino
Georgia
Seres Humanos
Infestações por Piolhos/parasitologia
Masculino
Ninfa/efeitos dos fármacos
Ninfa/genética
Ninfa/crescimento & desenvolvimento
Ninfa/microbiologia
Pediculus/genética
Pediculus/crescimento & desenvolvimento
Pediculus/microbiologia
Reação em Cadeia da Polimerase em Tempo Real
Federação Russa
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Bacterial); 0 (Insecticides); 509F88P9SZ (Permethrin)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170412
[St] Status:MEDLINE
[do] DOI:10.1093/jme/tjx039


  6 / 841 MEDLINE  
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[PMID]:28399223
[Au] Autor:Ponce-Garcia G; Villanueva-Segura K; Trujillo-Rodriguez G; Rodriguez-Sanchez IP; Lopez-Monroy B; Flores AE
[Ad] Endereço:Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, N.L., 66451 México.
[Ti] Título:First Detection of the Kdr Mutation T929I in Head Lice (Phthiraptera: Pediculidae) in Schoolchildren of the Metropolitan Area of Nuevo Leon and Yucatan, Mexico.
[So] Source:J Med Entomol;54(4):1025-1030, 2017 Jul 01.
[Is] ISSN:1938-2928
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The head louse Pediculus humanus capitis (De Geer) is a hematophagous ectoparasite that inhabits the human scalp. Infestations by this insect are commonly known as pediculosis, which is more common in younger groups. These infestations are asymptomatic; however, skin irritation from scratching occasionally may cause secondary bacterial infections. In recent years, the prevalence of pediculosis has increased in children; this increase has been attributed to louse resistance to the insecticides used as a control measure for infestation. The aim of the present study was to determine the presence and frequency of the knockdown resistance mutation (kdr) T929I in 468 head lice collected from 32 elementary schools in the metropolitan area of Nuevo Leon (24) and Yucatan (8), Mexico. This is the first report of a knockdown resistance (kdr) mechanism in head lice from Mexico. The T929I mutation was present in all of the sampled schools, with variability observed in its allelic and genotypic frequencies.
[Mh] Termos MeSH primário: Proteínas de Insetos/genética
Resistência a Inseticidas
Inseticidas/farmacologia
Mutação
Pediculus/genética
Piretrinas/farmacologia
[Mh] Termos MeSH secundário: Animais
Sequência de Bases
Criança
Seres Humanos
Infestações por Piolhos/parasitologia
México
Pediculus/efeitos dos fármacos
Alinhamento de Sequência
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Insect Proteins); 0 (Insecticides); 0 (Pyrethrins)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170412
[St] Status:MEDLINE
[do] DOI:10.1093/jme/tjx045


  7 / 841 MEDLINE  
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[PMID]:28155106
[Au] Autor:Dörge DD; Kuhn T; Klimpel S
[Ad] Endereço:Institute for Ecology, Evolution and Diversity, Goethe University, Max-von-Laue-Str. 13, D-60438, Frankfurt/Main, Germany. Dorian.Doerge@senckenberg.de.
[Ti] Título:Flammability testing of 22 conventional European pediculicides.
[So] Source:Parasitol Res;116(4):1189-1196, 2017 Apr.
[Is] ISSN:1432-1955
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Lice have been parasitizing humans for at least 10,000 years. Since then, humans have tried to rid themselves of these unpleasant and potentially disease-carrying insects. Despite various plant extracts and chemical compounds being used to combat recurring infestations to this date, several lice populations have developed resistance to some of the abundantly used compounds. This resulted in the development of anti-louse products that physically kill the different lice stages. Today, a widely used group of delousing agents are dimethicones (polydimethylsiloxane PDMS) which function by suffocating the lice. However, many dimethicones and related products are highly flammable which makes them potentially dangerous for treatment. In the present study, we tested the flammability of 22 delousing agents in order to shed some light onto this currently unresolved problem in the product design of pediculicides. Thirteen products were easily ignitable, some even by distant contact with a sparkler.
[Mh] Termos MeSH primário: Dimetilpolisiloxanos/farmacologia
Fogo
Inseticidas/farmacologia
Infestações por Piolhos/tratamento farmacológico
Pediculus/crescimento & desenvolvimento
Extratos Vegetais/farmacologia
[Mh] Termos MeSH secundário: Animais
Vetores de Doenças
Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dimethylpolysiloxanes); 0 (Insecticides); 0 (Plant Extracts); 63148-62-9 (baysilon)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171117
[Lr] Data última revisão:
171117
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170204
[St] Status:MEDLINE
[do] DOI:10.1007/s00436-017-5396-z


  8 / 841 MEDLINE  
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[PMID]:28105732
[Au] Autor:Kim JH; Previte DJ; Yoon KS; Murenzi E; Koehler JE; Pittendrigh BR; Lee SH; Clark JM
[Ad] Endereço:Department of Agricultural Biotechnology, Seoul National University, Seoul, Korea.
[Ti] Título:Comparison of the proliferation and excretion of Bartonella quintana between body and head lice following oral challenge.
[So] Source:Insect Mol Biol;26(3):266-276, 2017 Jun.
[Is] ISSN:1365-2583
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Human body and head lice are highly related haematophagous ectoparasites but only the body louse has been shown to transmit Bartonella quintana, the causative agent of trench fever. The mechanisms by which body lice became a vector for B. quintana, however, are poorly understood. Following oral challenge, green fluorescent protein-expressing B. quintana proliferated over 9 days postchallenge with the number of bacteria being significantly higher in whole body vs. head lice. The numbers of B. quintana detected in faeces from infected lice, however, were approximately the same in both lice. Nevertheless, the viability of B. quintana was significantly higher in body louse faeces. Comparison of immune responses in alimentary tract tissues revealed that basal transcription levels of peptidoglycan recognition protein and defensins were lower in body lice and the transcription of defensin 1 was up-regulated by oral challenge with wild-type B. quintana in head but not in body lice. In addition, the level of cytotoxic reactive oxygen species generated by epithelial cells was significantly lower in body lice. Although speculative at this time, the reduced immune response is consistent with the higher vector competence seen in body vs. head lice in terms of B. quintana infection.
[Mh] Termos MeSH primário: Bartonella quintana/fisiologia
Insetos Vetores/microbiologia
Pediculus/microbiologia
Febre das Trincheiras/transmissão
[Mh] Termos MeSH secundário: Animais
Trato Gastrointestinal/metabolismo
Proteínas de Fluorescência Verde
Seres Humanos
Pediculus/imunologia
Pediculus/metabolismo
Espécies Reativas de Oxigênio/metabolismo
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Reactive Oxygen Species); 147336-22-9 (Green Fluorescent Proteins)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170828
[Lr] Data última revisão:
170828
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170121
[St] Status:MEDLINE
[do] DOI:10.1111/imb.12292


  9 / 841 MEDLINE  
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[PMID]:28082644
[Au] Autor:Bowles VM; Yoon KS; Barker SC; Tran C; Rhodes C; Clark MJ
[Ad] Endereço:Hatchtech Pty Ltd Suite 201, 697 Burke Rd., Camberwell, Australia 3124 (vbowles@hatchtech.com.au).
[Ti] Título:Ovicidal Efficacy of Abametapir Against Eggs of Human Head and Body Lice (Anoplura: Pediculidae).
[So] Source:J Med Entomol;54(1):167-172, 2017 Jan.
[Is] ISSN:1938-2928
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Studies were undertaken to determine the ovicidal efficacy of 5,5'-dimethyl-2,2'-bipyridyl (abametapir) against eggs of both human head and body lice. Head lice eggs of different ages (0-2, 3-5, and 6-8-d-old eggs) were exposed to varying concentrations of abametapir in isopropanol and concentration-dependent response relationships established based on egg hatch. One hundred percent of all abametapir-treated eggs failed to hatch at the 0.74 and 0.55% concentrations, whereas 100% of 6-8-d-old head louse eggs failed to hatch only at the 0.74% concentration. The LC value for abametapir varied, depending on the age of the head lice eggs, from ∼0.10% recorded for 0-2-d-old eggs and increasing to ∼0.15% for 6-8-d-old eggs. Abametapir was also evaluated once formulated into a lotion referred to as Xeglyze (0.74% abametapir) and serial dilutions made. Ovicidal efficacies were determined against head lice eggs 0-8-d-old. Results indicated 100% ovicidal activity at the 0.74, 0.55, 0.37, and 0.18% concentrations. Additional studies undertaken using body lice eggs also demonstrated that abametapir was 100% ovicidal against eggs of all ages when evaluated at a concentration of 0.37 and 0.55%. Given that ovicidal activity is a critical component of any effective treatment regime for louse control, the data presented in this study clearly demonstrate the ability of abametapir to inhibit hatching of both head and body louse eggs as assessed in vitro.
[Mh] Termos MeSH primário: 2,2´-Dipiridil/análogos & derivados
Controle de Insetos
Inseticidas
Pediculus
[Mh] Termos MeSH secundário: Animais
Relação Dose-Resposta a Droga
Óvulo/crescimento & desenvolvimento
Pediculus/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (5,5'-dimethyl-2,2'-bipyridyl); 0 (Insecticides); 551W113ZEP (2,2'-Dipyridyl)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170823
[Lr] Data última revisão:
170823
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170114
[St] Status:MEDLINE
[do] DOI:10.1093/jme/tjw132


  10 / 841 MEDLINE  
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[PMID]:28011730
[Au] Autor:Ortega-Insaurralde I; Ceferino Toloza A; Gonzalez-Audino P; Inés Picollo M
[Ad] Endereço:Centro de investigaciones de plagas e insecticidas (CITEDEF-CONICET), Juan Bautista de Lasalle 4397 (B1603ALO), Villa Martelli, Buenos Aires, Argentina (iortega@citedef.gob.ar; atoloza@conicet.gov.ar; pgonzalezaudino@citedef.gob.ar; mpicollo@gmail.com).
[Ti] Título:Arrestant Effect of Human Scalp Components on Head Louse (Phthiraptera: Pediculidae) Behavior.
[So] Source:J Med Entomol;54(2):258-263, 2017 Mar 01.
[Is] ISSN:1938-2928
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Relevant evidence has shown that parasites process host-related information using chemical, visual, tactile, or auditory cues. However, the cues that are involved in the host-parasite interaction between Pediculus humanus capitis (De Geer 1767) and humans have not been identified yet. In this work, we studied the effect of human scalp components on the behavior of adult head lice. Filter paper segments were rubbed on volunteers' scalps and then placed in the experimental arena, where adult head lice were individually tested. The movement of the insects was recorded for each arena using the software EthoVision. Average movement parameters were calculated for the treatments in the bioassays such as total distance, velocity, number of times a head louse crossed between zones of the arena, and time in each zone of the arena. We found that scalp components induced head lice to decrease average locomotor activity and to remain arrested on the treated paper. The effect of the ageing of human scalp samples in the response of head lice was not statistically significant (i.e., human scalp samples of 4, 18, 40, and 60 h of ageing did not elicit a significant change in head louse behavior). When we analyzed the effect of the sex in the response of head lice to human scalp samples, males demonstrated significant differences. Our results showed for the first time the effect of host components conditioning head lice behavior. We discuss the role of these components in the dynamic of head lice infestation.
[Mh] Termos MeSH primário: Infestações por Piolhos/parasitologia
Pediculus/fisiologia
Couro Cabeludo/parasitologia
[Mh] Termos MeSH secundário: Adulto
Animais
Comportamento Animal
Feminino
Seres Humanos
Masculino
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170804
[Lr] Data última revisão:
170804
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161225
[St] Status:MEDLINE
[do] DOI:10.1093/jme/tjw192



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