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https://www.readbyqxmd.com/read/27914935/laboratory-and-field-evaluation-of-brown-dog-tick-behavioral-responses-to-potential-semiochemicals
#1
Lucas P Carnohan, Phillip E Kaufman, Sandra A Allan, Salvador A Gezan, Emma N I Weeks
The brown dog tick, Rhipicephalus sanguineus sensu lato (Parasitiformis: Ixodidae), is an ectoparasite of dogs that can be found worldwide. This tick poses unique difficulties in management because it can complete its entire life cycle indoors and has demonstrated acaricide resistance. The ability to monitor for tick presence and abundance is necessary for developing effective control programs. As such, an evaluation of adult brown dog tick behavioral responses to 16 potential semiochemicals was undertaken using Y-tube and straight-tube olfactometers...
November 9, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27914128/seroprevalence-of-severe-fever-with-thrombocytopenia-syndrome-in-southeastern-korea-2015
#2
Kye Hyung Kim, Mee Kyung Ko, Namhee Kim, Hyung Hoi Kim, Jongyoun Yi
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne disease characterized by fever, thrombocytopenia and diarrhea. SFTS was firstly reported in Korea in 2013 but its seroprevalence in the country has yet to be investigated. Here, we investigate the seroprevalence of SFTS in a Korean population. A cross-sectional study was conducted on patients who had their sera tested for various reasons at a tertiary university hospital on particular days in May 2015. This study was conducted in a tertiary hospital in southeastern Korea...
January 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27913725/in-vivo-expression-technology-and-5-end-mapping-of-the-borrelia-burgdorferi-transcriptome-identify-novel-rnas-expressed-during-mammalian-infection
#3
Philip P Adams, Carlos Flores Avile, Niko Popitsch, Ivana Bilusic, Renée Schroeder, Meghan Lybecker, Mollie W Jewett
Borrelia burgdorferi, the bacterial pathogen responsible for Lyme disease, modulates its gene expression profile in response to the environments encountered throughout its tick-mammal infectious cycle. To begin to characterize the B. burgdorferi transcriptome during murine infection, we previously employed an in vivo expression technology-based approach (BbIVET). This identified 233 putative promoters, many of which mapped to un-annotated regions of the complex, segmented genome. Herein, we globally identify the 5' end transcriptome of B...
December 1, 2016: Nucleic Acids Research
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
#4
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/27911903/transfected-babesia-bovis-expressing-a-tick-gst-as-a-live-vector-vaccine
#5
Daiane P Oldiges, Jacob M Laughery, Nelson Junior Tagliari, Ronaldo Viana Leite Filho, William C Davis, Itabajara da Silva Vaz, Carlos Termignoni, Donald P Knowles, Carlos E Suarez
The Rhipicephalus microplus tick is a notorious blood-feeding ectoparasite of livestock, especially cattle, responsible for massive losses in animal production. It is the main vector for transmission of pathogenic bacteria and parasites, including Babesia bovis, an intraerythrocytic apicomplexan protozoan parasite responsible for bovine Babesiosis. This study describes the development and testing of a live B. bovis vaccine expressing the protective tick antigen glutathione-S-transferase from Haemaphysalis longicornis (HlGST)...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27911694/seroprevalence-of-babesia-microti-in-individuals-with-lyme-disease
#6
Sabino R Curcio, Laurel P Tria, Azad L Gucwa
INTRODUCTION: Babesiosis is an emerging tick-borne disease (TBD) caused by Babesia microti, an intracellular parasite of red blood cells. Currently, it is the highest ranked pathogen transmitted by blood transfusion. Most healthy individuals infected with B. microti are asymptomatic, but may be at risk for chronic infection. Similar to Lyme disease transmitted by Borrelia burgdorferi, B. microti is spread by Ixodes scapularis ticks. The rate of coinfection with these TBDs in humans is unclear as most studies have focused their prevalence in ticks or rodent reservoirs...
December 2016: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/27908984/draft-anaplasma-phagocytophilum-genome-sequences-from-five-cows-two-horses-and-one-roe-deer-collected-in-europe
#7
Thibaud Dugat, Marie-Noëlle Rossignol, Olivier Rué, Valentin Loux, Sylvain Marthey, Marco Moroldo, Cornelia Silaghi, Dirk Höper, Julia Fröhlich, Martin Pfeffer, Erich Zweygarth, Anne-Claire Lagrée, Henri-Jean Boulouis, Nadia Haddad
Anaplasma phagocytophilum is a zoonotic tick-borne intracellular bacterium responsible for granulocytic anaplasmosis. As it is difficult to isolate and cultivate, only 20 A. phagocytophilum genomes have been sequenced to date. Here, we present eight A. phagocytophilum genome sequences obtained using alternative approaches based on sequence capture technology.
December 1, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27908928/development-and-validation-of-a-normal-phase-chiral-hplc-method-for-analysis-of-afoxolaner-using-a-chiralpak%C3%A2-ad-3-column
#8
Jinyou Zhuang, Satish Kumar, Abu Rustum
Afoxolaner is a new antiparasitic molecule from the isoxazoline family that acts on the insect acarine gamma-aminobutyric acid and glutamate receptors. Isoxazoline family of compounds has been employed as active pharmaceutical ingredient in drug products prescribed for control of fleas and ticks in dogs. Afoxolaner with a chiral center at isoxazoline ring exists as a racemic mixture. A normal phase chiral high performance liquid chromatography analytical method has been developed to verify that afoxolaner is a racemic mixture as demonstrated by specific rotation, as well as to determine enantiomeric purity of single enantiomer samples...
November 2016: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/27908773/does-the-effect-of-a-metarhizium-anisopliae-isolate-on-rhipicephalus-microplus-depend-on-the-tick-population-evaluated
#9
Anelise Webster, Endrigo Pradel, Ugo Araújo Souza, João Ricardo Martins, José Reck, Augusto Schrank, Guilherme Klafke
The filamentous fungus Metarhizium anisopliae is an arthropod pathogen used in the biological control of pests in agriculture and livestock. The effect of the fungus M. anisopliae on ticks has been shown in experiments in vitro. The aim of the present study was to compare the susceptibility of different field isolates of Rhipicephalus microplus to M. anisopliae. A total of 67 field isolates were evaluated. Rhipicephalus microplus larvae were immersed in an M. anisopliae suspension (10(8) conidia/mL) for 5min...
November 24, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27908772/anaplasma-platys-in-dogs-from-uruguay
#10
Luis Carvalho, Maria Teresa Armua-Fernandez, Nicolás Sosa, María Laura Félix, José Manuel Venzal
Anaplasmataceae family members include vector-borne bacteria of veterinary importance that may also affect humans. Ehrlichia canis and Anaplasma platys are the main members of this family detected in dogs worldwide. In Uruguay there are not many published studies on tick-borne pathogens affecting dogs, the only haemoparasite molecularly confirmed in dogs, is the piroplasm Rangelia vitalii. The aim of the present work was to detect the presence of A. platys and E. canis in dogs and dogs-associated ticks of two localities in Northwestern Uruguay...
November 17, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27908771/molecular-detection-and-genetic-characterization-of-babesia-theileria-and-anaplasma-amongst-apparently-healthy-sheep-and-goats-in-the-central-region-of-turkey
#11
Mo Zhou, Shinuo Cao, Ferda Sevinc, Mutlu Sevinc, Onur Ceylan, Sepil Ekici, Charoonluk Jirapattharasate, Paul Franck Adjou Moumouni, Mingming Liu, Guanbo Wang, Aiko Iguchi, Patrick Vudriko, Hiroshi Suzuki, Xuenan Xuan
Babesia spp., Theileria spp. and Anaplasma spp. are significant tick-borne pathogens of livestock globally. In this study, we investigated the presence and distribution of Babesia ovis, Theileria ovis and Anaplasma ovis in 343 small ruminants (249 sheep and 94 goats) from 13 towns in the Central Anatolia region of Turkey using species-specific PCR assays. The PCR were conducted using the primers based on the B. ovis ssu rRNA (BoSSUrRNA), T. ovis ssu rRNA (ToSSUrRNA) and A. ovis major surface protein 4 (AoMSP4) genes, respectively...
November 16, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27907193/phylogenetic-lineages-and-postglacial-dispersal-dynamics-characterize-the-genetic-structure-of-the-tick-ixodes-ricinus-in-northwest-europe
#12
Knut H Røed, Kjersti S Kvie, Gunnar Hasle, Lucy Gilbert, Hans Petter Leinaas
Dispersal and gene flow are important mechanisms affecting the dynamics of vectors and their pathogens. Here, patterns of genetic diversity were analyzed in many North European populations of the tick, Ixodes ricinus. Population sites were selected within and between areas separated by geographical barriers in order to evaluate the importance of tick transportation by birds in producing genetic connectivity across open sea and mountain ranges. The phylogenetic analyses of the mitochondrial control region and the cytochrome b gene revealed two distinct clades with supported sub-clades, with three genetic lineages: GB and WNo associated with Great Britain and western Norway respectively, and Eu with a wider distribution across continental Europe in agreement with much lower efficiency of tick dispersal by birds than by large mammals...
2016: PloS One
https://www.readbyqxmd.com/read/27905346/bevacizumab-in-choroidal-neovascularization-secondary-to-indian-tick-typhus-a-rare-case-report
#13
Raghavendra Ijeri, Gautam Beladiya, Sharad Bhomaj
Tick typhus causes hemorrhagic lesions over the skin. Retina also shows hemorrhages and exudates. Many cases have been reported in western literature about this condition. To our best of knowledge, this is the first case report of tick typhus in India which was also associated with inflammatory choroidal neovascularization.
October 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27905285/the-current-status-of-ticks-in-turkey-a-100-year-period-review-from-1916-to-2016
#14
Abdullah İnci, Alparslan Yıldırım, Önder Düzlü
Environmental and bio-ecological changes, some administrative and political mistakes, and global warming seriously affect the behaviors of ticks in Turkey and globally. The global public sensitivity toward tick infestations has increased along with increases in tick-borne diseases (TBDs). Recently, the World Health Organization (WHO) developed a new political concept, "One Health," for specific struggle strategies against tick infestations and TBDs. To highlight the importance of the issue, the WHO had declared the year 2015 for vector-borne diseases and adopted the slogan "small bites big threat"...
September 2016: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/27904685/phylogenetic-analysis-of-basic-helix-loop-helix-transcription-factors-in-the-genome-of-a-typical-human-disease-vector
#15
Meng-Yun Chen, Ying Dong, Rui-Xue Chang, Qian-Qian Ang, Ran Zhang, Yan-Yan Wu, Yi-Hui Xu, Wen-Sheng Lu, Xiao-Dong Zheng
Ixodes scapularis, the black-legged tick, is one of the most common human-disease vectors and transmits Borrelia species, such as B. burgdorferi, as well as Theileria microti, Anaplasma phagocytophilum, etc. As basic helix-loop-helix (bHLH) transcription factors have been recognized for many years as important regulators of various developmental processes, we performed phylogenetic analysis of the black-legged tick genome in order to identify the number and family of bHLH transcription factors. Because bHLH family members have been identified in many organisms, including silkworm and fruit fly, we were able to conduct this survey and identify 58 putative bHLH transcription factors...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27904278/tick-bite-by-nymphal-amblyomma-testudinarium
#16
Yeong Ho Kim, Ji Hyun Lee, Young Min Park, Jun Young Lee
Ticks are parasites that usually suck the blood of wild or domestic animals; rarely, they ingest human blood and spread various febrile infectious diseases along with skin problems. Out of 40 cases of tick bite reported in Korea, only 3 were caused by nymphal ticks, and tick bites by nymphal Amblyomma testudinarium have not been reported previously. Herein, we report a rare case of tick bite by nymphal A. testudinarium. A 57-year-old woman presented with an asymptomatic solitary erythematous nodule on the left thigh that had been present for 6 days...
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27903055/local-landscape-effects-on-population-dynamics-of-ixodes-ricinus
#17
Naveed Asghar, Mona Petersson, Magnus Johansson, Patrik Dinnetz
Ixodes ricinus, a common tick in Europe, transmits severe tickborne pathogens (TBPs). In Sweden, both prevalence and incidence of tick-borne infections have increased during the last few decades, and a majority of the cases is reported from the area around Stockholm. Among ticks, transmission of TBPs involves co-feeding of susceptible larvae or nymphs with infected ticks on the same host. Seasonal synchrony of immature stages and total tick abundance are important factors for the probability of horizontal transmission of TBPs...
November 21, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27902419/influence-of-tick-and-mammalian-physiological-temperatures-on-borrelia-burgdorferi-biofilms
#18
Shafiq Shaikh, Venkata Arun Timmaraju, Jason P Torres, Kayla M Socarras, Priyanka A S Theophilus, Eva Sapi
The spirochaete bacterium Borrelia burgdorferisensu lato is the aetiologic agent of Lyme disease. Borrelia is transmitted to mammals through tick bite and is adapted to survive at tick and mammalian physiological temperatures. We have previously shown that B. burgdorferi can exist in different morphological forms, including the antibiotic-resistant biofilm form, in vitro and in vivo. B. burgdorferi forms aggregates in ticks as well as in humans, indicating potential of biofilm formation at both 23 and 37 °C...
November 2016: Microbiology
https://www.readbyqxmd.com/read/27898670/gray-wolf-exposure-to-emerging-vector-borne-diseases-in-wisconsin-with-comparison-to-domestic-dogs-and-humans
#19
Rocio F Jara, Adrian P Wydeven, Michael D Samuel
World-wide concern over emerging vector-borne diseases has increased in recent years for both animal and human health. In the United Sates, concern about vector-borne diseases in canines has focused on Lyme disease, anaplasmosis, ehrlichiosis, and heartworm which infect domestic and wild canids. Of these diseases, Lyme and anaplasmosis are also frequently diagnosed in humans. Gray wolves (Canis lupus) recolonized Wisconsin in the 1970s, and we evaluated their temporal and geographic patterns of exposure to these four vector-borne diseases in Wisconsin as the population expanded between 1985 and 2011...
2016: PloS One
https://www.readbyqxmd.com/read/27894863/molecular-evidence-for-toxoplasma-gondii-in-feeding-and-questing-ixodes-ricinus-ticks
#20
Małgorzata Adamska, Bogumiła Skotarczak
The aim of the present study was to detect Toxoplasma gondii in ticks collected from ponies and field vegetation and to determine the role of Shetland ponies as a potential reservoir host for T. gondii. A total of 1737 feeding Ixodes ricinus collected from 49 horses and 371 questing ticks were tested by PCR and sequencing for the presence and genotyping of T. gondii. All ticks were examined in a previous study to detect and identify pathogenic bacterial species. The aim of this study was also to detect co-infection of ticks with these bacteria and T...
November 21, 2016: Ticks and Tick-borne Diseases
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