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https://www.readbyqxmd.com/read/28645519/the-repellent-efficacy-of-eleven-essential-oils-against-adult-dermacentor-reticulatus-ticks
#1
Katarína Štefanidesová, Ľudovít Škultéty, Olivier A E Sparagano, Eva Špitalská
Dermacentor reticulatus ticks are among the most important arthropod vectors of zoonotic disease agents in Europe. Eleven essential oils, namely basil (Ocimum basilicum), bergamot (Citrus bergamia), clove bud (Syzygium aromaticum), citronella (Cymbopogon winterianus), creeping thyme (Thymus serpyllum), lavender (Lavandula angustifolia), lemon-scented gum (Corymbia citriodora), marjoram (Origanum majorana), peppermint (Mentha piperita), spearmint (M. spicata), and red thyme (Thymus vulgaris) were tested for repellency against adult D...
June 15, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28645329/ticks-and-associated-pathogens-in-dogs-from-greece
#2
Maria Stefania Latrofa, Athanasios Angelou, Alessio Giannelli, Giada Annoscia, Silvia Ravagnan, Filipe Dantas-Torres, Gioia Capelli, Lenaig Halos, Frederic Beugnet, Elias Papadopoulos, Domenico Otranto
No abstract text is available yet for this article.
June 23, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28645313/molecular-investigation-and-phylogeny-of-anaplasmataceae-species-infecting-domestic-animals-and-ticks-in-corsica-france
#3
Mustapha Dahmani, Bernard Davoust, Djamel Tahir, Didier Raoult, Florence Fenollar, Oleg Mediannikov
BACKGROUNDS: Corsica is a French island situated in the Mediterranean Sea. The island provides suitable natural conditions to study disease ecology, especially tick-borne diseases and emerging diseases in animals and ticks. The family Anaplasmataceae is a member of the order Rickettsiales; it includes the genera Anaplasma, Ehrlichia, Neorickettsia and Wolbachia. Anaplasmosis and ehrlichiosis traditionally refer to diseases caused by obligate intracellular bacteria of the genera Anaplasma and Ehrlichia...
June 23, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28642842/the-tick-microbiome-why-non-pathogenic-microorganisms-matter-in-tick-biology-and-pathogen-transmission
#4
REVIEW
Sarah I Bonnet, Florian Binetruy, Angelica M Hernández-Jarguín, Olivier Duron
Ticks are among the most important vectors of pathogens affecting humans and other animals worldwide. They do not only carry pathogens however, as a diverse group of commensal and symbiotic microorganisms are also present in ticks. Unlike pathogens, their biology and their effect on ticks remain largely unexplored, and are in fact often neglected. Nonetheless, they can confer multiple detrimental, neutral, or beneficial effects to their tick hosts, and can play various roles in fitness, nutritional adaptation, development, reproduction, defense against environmental stress, and immunity...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28642433/quantum-correlations-from-a-room-temperature-optomechanical-cavity
#5
T P Purdy, K E Grutter, K Srinivasan, J M Taylor
The act of position measurement alters the motion of an object being measured. This quantum measurement backaction is typically much smaller than the thermal motion of a room-temperature object and thus difficult to observe. By shining laser light through a nanomechanical beam, we measure the beam's thermally driven vibrations and perturb its motion with optical force fluctuations at a level dictated by the Heisenberg measurement-disturbance uncertainty relation. We demonstrate a cross-correlation technique to distinguish optically driven motion from thermally driven motion, observing this quantum backaction signature up to room temperature...
June 23, 2017: Science
https://www.readbyqxmd.com/read/28641955/molecular-identification-of-novel-phlebovirus-sequences-in-european-ticks
#6
Maren Prinz, Jonas Fuchs, Steffen Ehrmann, Michael Scherer-Lorenzen, Georg Kochs, Marcus Panning
In recent years the number of newly described tick-borne phleboviruses has been steadily growing. Some of these novel viruses are highly pathogenic in humans, e.g. the Heartland and severe fever with thrombocytopenia syndrome virus. We aimed to analyse ticks sampled across Europe to investigate the diversity of phleboviruses using a comprehensive PCR-based screening approach. A total of 4387 ticks were collected from the vegetation in regions of France, Belgium, Germany, Sweden, and Estonia, respectively. Ticks were pooled and 22/979 pools tested positive using a PCR targeting the large (L) segment of phleboviruses...
June 15, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28639697/determination-of-metabolic-resistance-mechanisms-in-pyrethroid-resistant-and-fipronil-tolerant-brown-dog-ticks
#7
A L Eiden, P E Kaufman, F M Oi, M J Dark, J R Bloomquist, R J Miller
Rhipicephalus sanguineus (Latreille) (Ixodida: Ixodidae) is a three-host dog tick found worldwide that is able to complete its' entire lifecycle indoors. Options for the management of R. sanguineus are limited and its' control relies largely on only a few acaricidal active ingredients. Previous studies have confirmed permethrin resistance and fipronil tolerance in R. sanguineus populations, commonly conferred by metabolic detoxification or target site mutations. Herein, five strains of permethrin-resistant and three strains of fipronil-tolerant ticks were evaluated for metabolic resistance using synergists to block metabolic enzymes...
June 22, 2017: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/28638376/first-molecular-detection-of-piroplasm-infection-in-pet-dogs-from-gansu-china
#8
Qingli Niu, Jifei Yang, Zhijie Liu, Shandian Gao, Yuping Pan, Guiquan Guan, Yuefeng Chu, Guangyuan Liu, Jianxun Luo, Hong Yin
Babesiosis, the hemolytic disease caused by Babesia, which is a tick-transmitted obligate intraerythrocytic protozoan parasite. This disease is responsible for significant mortality and morbidity rates and enormous economic losses to the livestock industry in tropical and subtropical regions worldwide. In this study, blood samples were collected from 141 pet dogs from Gansu, China, and analyzed for Babesia or Theileria spp. infection using specific PCR and sequencing based on 18S rRNA gene fragments. The results indicated that 18S rRNA gene sequences from 11 samples were similar to the 18S rRNA gene sequences in Babesia canis vogeli (2) and Theileria sinensis (9)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28637681/two-tales-of-cytauxzoon-felis-infections-in-domestic-cats
#9
REVIEW
Jin-Lei Wang, Ting-Ting Li, Guo-Hua Liu, Xing-Quan Zhu, Chaoqun Yao
Cytauxzoonosis is an emerging infectious disease that affects wild felids as well as the domestic cat; it is caused by the apicomplexan protozoan parasites belonging to the genus Cytauxzoon. Cytauxzoonfelis is the species of major concern, whose transmission occurs via the bite of an infected tick. Cytauxzoonosis of the domestic cat has historically been considered uniformly fatal, with a short course of illness, and most domestic cats die within 9 to 15 days postinfection. However, increasing evidence of domestic cats surviving C...
October 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/28636287/the-spectrum-of-aseptic-central-nervous-system-infections-in-southern-germany-demographic-clinical-and-laboratory-findings
#10
M Kaminski, V Grummel, D Hoffmann, A Berthele, B Hemmer
BACKGROUND AND PURPOSE: Aseptic infections of the central nervous system (CNS) are frequently observed in Germany. However, no study has systematically addressed the spectrum of aseptic CNS infections in Germany. METHODS: Data on 191 adult patients diagnosed from January 2007 to December 2014 with aseptic meningitis or encephalitis/meningoencephalitis at our hospital were collected by chart review and analyzed for demographic, clinical and laboratory findings. Patients were stratified according to the causative virus and findings were compared between groups...
June 21, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28635667/a-review-of-flaviviruses-that-have-no-known-arthropod-vector
#11
REVIEW
Bradley J Blitvich, Andrew E Firth
Most viruses in the genus Flavivirus are horizontally transmitted between hematophagous arthropods and vertebrate hosts, but some are maintained in arthropod- or vertebrate-restricted transmission cycles. Flaviviruses maintained by vertebrate-only transmission are commonly referred to as no known vector (NKV) flaviviruses. Fourteen species and two subtypes of NKV flaviviruses are recognized by the International Committee on Taxonomy of Viruses (ICTV), and Tamana bat virus potentially belongs to this group. NKV flaviviruses have been isolated in nature almost exclusively from bats and rodents; exceptions are the two isolates of Dakar bat virus recovered from febrile humans and the recent isolations of Sokoluk virus from field-collected ticks, which raises questions as to whether it should remain classified as an NKV flavivirus...
June 21, 2017: Viruses
https://www.readbyqxmd.com/read/28634573/tick-bioactive-molecules-as-novel-therapeutics-beyond-vaccine-targets
#12
Kristen E Murfin, Erol Fikrig
No abstract text is available yet for this article.
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28634526/concurrent-babesiosis-and-serological-evidence-of-lyme-disease-in-a-young-patient
#13
Mark Adler, Thein Swe, Akari Thein Naing
Human babesiosis co-infected with Lyme disease in a young patient is an important condition. Here, we describe a case of a 39-year-old male patient with concurrent babesiosis and Lyme disease. Co-infections of tick borne diseases are often difficult to diagnose and underreported, and resulting in significant morbidity and mortality to patients. While co-infections have been infrequently described, it is of paramount importance that clinicians should be able to diagnose early and treat them effectively according to the patient geographical area and history of tick bite...
January 2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/28633503/range-expansion-and-increasing-borrelia-burgdorferi-infection-of-the-tick-ixodes-scapularis-acari-ixodidae-in-iowa-1990-2013
#14
Jonathan D Oliver, Steve W Bennett, Lorenza Beati, Lyric C Bartholomay
A passive surveillance program monitored ticks submitted by the public in Iowa from 1990-2013. Submitted ticks were identified to species and life stage, and Ixodes scapularis Say nymphs and adults were tested for the presence of Borrelia burgdorferi. An average of 2.6 of Iowa's 99 counties submitted first reports of I. scapularis per year over the surveillance period, indicating expansion of this tick species across the state. The proportion of vector ticks infected by B. burgdorferi increased over time between 1998 and 2013...
June 17, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28632298/patient-med-tbe-f%C3%A3-rb%C3%A3-ttrades-snabbt-vid-behandling-med-kortison-evidens-saknas-dock-f%C3%A3-r-v%C3%A3-rdet-av-immunmodulerande-terapi
#15
Carl Wengse, Jesper Ericsson, Susanna Hallberg, Johan Ursing
Rapid improvement of tick-borne encephalitis after treatment with corticosteroids Tick-borne encephalitis (TBE) is a viral disease transmitted by ticks. The virus is divided into three subtypes named Western, Siberian and Far Eastern TBE virus (TBEV). Western TBEV is endemic in parts of Europe and Sweden and typically causes a biphasic illness with influenza-like symptoms followed by neurological symptoms ranging from mild meningitis to severe meningoencephalitis and death. Despite an effective vaccine, TBE is increasing in Sweden and Europe...
June 16, 2017: Läkartidningen
https://www.readbyqxmd.com/read/28631423/pet-ownership-increases-human-risk-of-encountering-ticks
#16
E H Jones, A F Hinckley, S A Hook, J I Meek, B Backenson, K J Kugeler, K A Feldman
We examined whether pet ownership increased the risk for tick encounters and tickborne disease among residents of three Lyme disease-endemic states as a nested cohort within a randomized controlled trial. Information about pet ownership, use of tick control for pets, property characteristics, tick encounters and human tickborne disease were captured through surveys, and associations were assessed using univariate and multivariable analyses. Pet-owning households had 1.83 times the risk (95% CI = 1.53, 2.20) of finding ticks crawling on and 1...
June 19, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28631117/multi-criteria-decision-analysis-to-model-ixodes-ricinus-habitat-suitability
#17
Raphaël Rousseau, Guy McGrath, Barry J McMahon, Sophie O Vanwambeke
Tick-borne diseases present a major threat to both human and livestock health throughout Europe. The risk of infection is directly related to the presence of its vector. Thereby it is important to know their distribution, which is strongly associated with environmental factors: the presence and availability of a suitable habitat, of a suitable climate and of hosts. The present study models the habitat suitability for Ixodes ricinus in Ireland, where data on tick distribution are scarce. Tick habitat suitability was estimated at a coarse scale (10 km) with a multi-criteria decision analysis (MCDA) method according to four different scenarios (depending on the variables used and on the weights granted to each of them)...
June 19, 2017: EcoHealth
https://www.readbyqxmd.com/read/28631054/adaptation-of-tick-borne-encephalitis-virus-from-human-brain-to-different-cell-cultures-induces-multiple-genomic-substitutions
#18
Eugenia P Ponomareva, Vladimir A Ternovoi, Tamara P Mikryukova, Elena V Protopopova, Anastasia V Gladysheva, Alexander N Shvalov, Svetlana N Konovalova, Eugene V Chausov, Valery B Loktev
The C11-13 strain from the Siberian subtype of tick-borne encephalitis virus (TBEV) was isolated from human brain using pig embryo kidney (PEK), 293, and Neuro-2a cells. Analysis of the complete viral genome of the C11-13 variants during six passages in these cells revealed that the cell-adapted C11-13 variants had multiple amino acid substitutions as compared to TBEV from human brain. Seven out of eight amino acids substitutions in the high-replicating C11-13(PEK) variant mapped to non-structural proteins; 13 out of 14 substitutions in the well-replicating C11-13(293) variant, and all four substitutions in the low-replicating C11-13(Neuro-2a) variant were also localized in non-structural proteins, predominantly in the NS2a (2), NS3 (6) and NS5 (3) proteins...
June 19, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28630025/the-clock-is-ticking-ageing-of-the-circadian-system-from-physiology-to-cell-cycle
#19
REVIEW
Eva Terzibasi-Tozzini, Antonio Martinez-Nicolas, Alejandro Lucas-Sánchez
The circadian system is the responsible to organise the internal temporal order in relation to the environment of every process of the organisms producing the circadian rhythms. These rhythms have a fixed phase relationship among them and with the environment in order to optimise the available energy and resources. From a cellular level, circadian rhythms are controlled by genetic positive and negative auto-regulated transcriptional and translational feedback loops, which generate 24hour rhythms in mRNA and protein levels of the clock components...
June 16, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28630001/host-influence-in-the-genomic-composition-of-flaviviruses-a-multivariate-approach
#20
Diego Simón, Alvaro Fajardo, Martín Sóñora, Adriana Delfraro, Héctor Musto
Flaviviruses present substantial differences in their host range and transmissibility. We studied the evolution of base composition, dinucleotide biases, codon usage and amino acid frequencies in the genus Flavivirus within a phylogenetic framework by principal components analysis. There is a mutual interplay between the evolutionary history of flaviviruses and their respective vectors and/or hosts. Hosts associated to distinct phylogenetic groups may be driving flaviviruses at different pace and through various sequence landscapes, as can be seen for viruses associated with Aedes or Culex spp...
June 16, 2017: Biochemical and Biophysical Research Communications
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