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https://www.readbyqxmd.com/read/29330092/a-novel-double-antigen-sandwich-elisa-for-the-species-independent-detection-of-crimean-congo-hemorrhagic-fever-virus-specific-antibodies
#1
Miriam A Sas, Loic Comtet, Fabien Donnet, Marc Mertens, Zati Vatansever, Noel Tordo, Philippe Pourquier, Martin H Groschup
Crimean-Congo hemorrhagic fever (CCHF) is a tick-borne disease in humans caused by the CCHF virus (CCHFV). The detection of anti-CCHFV antibodies in animals is used to reveal infection risk areas. Therefore a simple, quick and reliable multispecies assay for the detection of CCHFV-specific antibodies is needed. This work presents the development and validation of a novel CCHF double-antigen ELISA for the detection of anti-CCHFV nucleoprotein antibodies. The test requires 30 μl of serum, and results are obtained within 90 min...
January 9, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29329785/a-relapsing-fever-group-borrelia-sp-is-widely-distributed-among-wild-deer-in-japan
#2
Yumi Kumagai, Kozue Sato, Kyle R Taylor, Aya Zamoto-Niikura, Koichi Imaoka, Shigeru Morikawa, Makoto Ohnishi, Hiroki Kawabata
A relapsing fever group Borrelia sp. was detected from the blood of wild deer (Cervus nippon) in Japan. The Borrelia sp. was distributed nationwide among deer with an overall prevalence of 26% in blood samples. The prevalence of infection was significantly higher in fawns (48.4%) compared to adult deer (23.6%). Sequencing analysis reveals that this Borrelia sp. belongs to the hard tick-borne relapsing fever borreliae, and that it forms a single lineage based on sequences of the flagellin and glycerophosphodiester phosphodiesterase genes...
December 28, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29329629/estimates-of-repeatability-and-correlations-of-hemoparasites-infection-levels-for-cattle-reared-in-endemic-areas-for-rhipicephalus-microplus
#3
Rodrigo Giglioti, Henrique Nunes de Oliveira, Talita Barban Bilhassi, Amanda Izeli Portilho, Cintia Hiromi Okino, Cintia Righetti Marcondes, Marcia Cristina de Sena Oliveira
Rhipicephalus microplus is a vector of cattle tick fever, a disease caused by the protozoans Babesia bovisand B. bigemina, and also anaplasmosis, produced by the Rickettsiales Anaplasma marginale. These tick-borne pathogens cause considerable losses to Brazilian livestock breeders and represent an obstacle to the expanded use of taurine breeds due to their higher sensitivity to ticks and hemoparasites compared to zebu breeds. Differences in the susceptibility to hemoparasites were also verified within breeds, suggesting that may be possible to select a most resistant phenotype...
January 30, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29324725/west-nile-virus-and-other-nationally-notifiable-arboviral-diseases-united-states-2016
#4
Alexis Burakoff, Jennifer Lehman, Marc Fischer, J Erin Staples, Nicole P Lindsey
Arthropod-borne viruses (arboviruses) are transmitted to humans primarily through the bites of infected mosquitoes and ticks. West Nile virus (WNV) is the leading cause of domestically acquired arboviral disease in the continental United States (1,2). Other arboviruses, including La Crosse, Powassan, Jamestown Canyon, St. Louis encephalitis, and eastern equine encephalitis viruses, cause sporadic cases of disease and occasional outbreaks. This report summarizes surveillance data reported to CDC for 2016 for nationally notifiable arboviruses...
January 12, 2018: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29321318/viperin-restricts-zika-virus-and-tick-borne-encephalitis-virus-replication-by-targeting-ns3-for-proteasomal-degradation
#5
Christakis Panayiotou, Richard Lindqvist, Chaitanya Kurhade, Kirstin Vonderstein, Jenny Pasto, Karin Edlund, Arunkumar S Upadhyay, Anna K Överby
Flaviviruses are arthropod-borne viruses that constitute a major global health problem, with millions of human infections annually. Their pathogenesis ranges from mild illness to severe manifestations such as hemorrhagic fever and fatal encephalitis. Type I interferons (IFNs) are induced in response to viral infection, and stimulate the expression of interferon-stimulated genes (ISGs), including that encoding viperin (virus-inhibitory protein, endoplasmic reticulum-associated, IFN-inducible), which shows antiviral activity against a broad spectrum of viruses including several flaviviruses...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29317885/seroprevalence-and-risk-factors-for-theileria-equi-infection-in-equines-from-khyber-pakhtunkhwa-province-pakistan
#6
Muhammad Jamal Khan Afridi, Abdul Hafeez Mian, Muhammad Saqib, Ghazanfar Abbas, Javid Ali, Muhammad Khalid Mansoor, Awais Ur Rahman Sial, Imaad Rasheed, Muhammad Hammad Hussain
Background: Theileria equi is a tick borne protozoan parasite which causes piroplasmosis among equines worldwide. The present study was aimed to determine seroprevalence of T. equi in donkeys, horses, and mules from two equine populated districts (Peshawar and Charsadda) of Khyber Pakhtunkhwa (KPK), Pakistan. Methods: A total of 393 equine (195 horses, 194 donkeys and 4 mules) serum samples were collected from five and four randomly selected localities in Charsadda (n = 193) and Peshawar (n = 200), respectively...
October 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/29313244/meningoencephaloradiculitis-following-infection-with-tick-borne-encephalitis-virus-case-report-and-review-of-the-literature
#7
Stephanie Du Four, Rembert Mertens, Wietse Wiels, Jacques De Keyser, Veronique Bissay, Anja Flamez
Tick borne encephalitis (TBE) is an infectious zoonotic disease caused by an RNA virus that is endemic to Central and Eastern Europe, Russia, and large parts of Asia. The tick borne encephalitis virus (TBEV) is transmitted through the saliva of infected ticks and infected goat milk. In the vast majority of cases, an infection with TBEV has a subclinical course. However, in some cases, it leads to neurological symptoms due to meningitis, meningoencephalitis, meningoencephalomyelitis, or meningoencephaloradiculitis...
January 8, 2018: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/29310697/epidemiology-genetic-variants-and-clinical-course-of-natural-infections-with-anaplasma-phagocytophilum-in-a-dairy-cattle-herd
#8
Cornelia Silaghi, Marion Nieder, Carola Sauter-Louis, Gabriela Knubben-Schweizer, Kurt Pfister, Martin Pfeffer
BACKGROUND: Anaplasma phagocytophilum is an obligate intracellular, tick-transmitted bacterium that causes granulocytic anaplasmosis in humans and several mammalian species including domestic ruminants where it is called tick-borne fever (TBF). Different genetic variants exist but their impact with regard to putative differences in host associations and pathogenicity are not yet completely understood. METHODS: Natural infections with A. phagocytophilum in a dairy cattle herd in Germany were investigated over one pasture season by using serology, haematology, blood chemistry and polymerase chain reaction (PCR)...
January 8, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29304171/mcp-1-kc-like-and-il-8-as-critical-mediators-of-pathogenesis-caused-by-babesia-canis
#9
Asier Galán, Iva Mayer, Renata Barić Rafaj, Krešo Bendelja, Velimir Sušić, José Joaquín Cerón, Vladimir Mrljak
Canine babesiosis caused by the intraerythrocytic protozoan parasite Babesia canis is a tick-borne disease characterized by a host response that involves both cellular and humoral immunity. This study focuses on the secretion of cytokines Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF), Keratinocyte Chemotactic-like (KC-like), Interleukins (IL)-2, IL-7, IL-8, IL-10, IL-15, IL-18 and Monocyte Chemotactic Protein-1 (MCP-1) in babesiosis caused by Babesia canis upon treatment with Imizol®. We assessed time dependent changes in cytokine levels and tested whether these changes correlate with pathogenesis of the disease...
2018: PloS One
https://www.readbyqxmd.com/read/29300779/exosomes-serve-as-novel-modes-of-tick-borne-flavivirus-transmission-from-arthropod-to-human-cells-and-facilitates-dissemination-of-viral-rna-and-proteins-to-the-vertebrate-neuronal-cells
#10
Wenshuo Zhou, Michael Woodson, Biswas Neupane, Fengwei Bai, Michael B Sherman, Kyung H Choi, Girish Neelakanta, Hameeda Sultana
Molecular determinants and mechanisms of arthropod-borne flavivirus transmission to the vertebrate host are poorly understood. In this study, we show for the first time that a cell line from medically important arthropods, such as ticks, secretes extracellular vesicles (EVs) including exosomes that mediate transmission of flavivirus RNA and proteins to the human cells. Our study shows that tick-borne Langat virus (LGTV), a model pathogen closely related to tick-borne encephalitis virus (TBEV), profusely uses arthropod exosomes for transmission of viral RNA and proteins to the human- skin keratinocytes and blood endothelial cells...
January 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29299270/investigating-the-effects-of-age-related-spatial-structuring-on-the-transmission-of-a-tick-borne-virus-in-a-colonially-breeding-host
#11
Klara M Wanelik, Sarah J Burthe, Mike P Harris, Miles A Nunn, H Charles J Godfray, Ben C Sheldon, Angela R McLean, Sarah Wanless
Higher pathogen and parasite transmission is considered a universal cost of colonial breeding due to the physical proximity of colony members. However, this has rarely been tested in natural colonies, which are structured entities, whose members interact with a subset of individuals and differ in their infection histories. We use a population of common guillemots, Uria aalge, infected by a tick-borne virus, Great Island virus, to explore how age-related spatial structuring can influence the infection costs borne by different members of a breeding colony...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29297316/a-database-of-human-genes-and-a-gene-network-involved-in-response-to-tick-borne-encephalitis-virus-infection
#12
Elena V Ignatieva, Alexander V Igoshin, Nikolay S Yudin
BACKGROUND: Tick-borne encephalitis is caused by the neurotropic, positive-sense RNA virus, tick-borne encephalitis virus (TBEV). TBEV infection can lead to a variety of clinical manifestations ranging from slight fever to severe neurological illness. Very little is known about genetic factors predisposing to severe forms of disease caused by TBEV. The aims of the study were to compile a catalog of human genes involved in response to TBEV infection and to rank genes from the catalog based on the number of neighbors in the network of pairwise interactions involving these genes and TBEV RNA or proteins...
December 28, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29288009/borrelia-persica-infection-in-rock-hyraxes
#13
Gabriela Kleinerman, Roni King, Yaarit Nachum-Biala, Gad Baneth
Tick-borne relapsing fever (TBRF) is an acute infectious disease caused by arthropod-borne spirochetes of the genus Borrelia and characterized by recurrent episodes of fever. Borrelia persica, the causative agent of this disease in Israel, is transmitted by the argasid tick Ornithodoros tholozani. There is little information about the maintenance and possible vertebrate reservoirs of B. persica in nature, but the tick O. tholozani is known to feed on animals that enter its habitat in caves, rock crevices and shady environments...
December 9, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29284563/a-novel-ehrlichia-species-in-blood-and-ixodes-ornithorhynchi-ticks-from-platypuses-ornithorhynchus-anatinus-in-queensland-and-tasmania-australia
#14
Alexander W Gofton, Siew-May Loh, Amanda D Barbosa, Andrea Paparini, Amber Gillett, James Macgregor, Charlotte L Oskam, Una M Ryan, Peter J Irwin
Worldwide, Ehrlichia spp. are emerging infectious organisms of domestic animals and people, however, most Ehrlichia spp. naturally infect wildlife reservoirs causing mainly asymptomatic infections. Australian ecosystems have been under-explored for these potentially pathogenic organisms, and recent studies have identified a range of novel Ehrlichia, and their sister genera, Anaplasma and 'Candidatus Neoehrlichia' species, from native Australian ticks. We used bacterial 16S rRNA (16S) next-generation sequencing and genus-specific PCR to profile the bacterial communities in platypus (Ornithorhynchus anatinus) blood samples and platypus ticks (Ixodes ornithorhynchi), and identified a high prevalence of Ehrlichia sequences...
December 24, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29279085/tick-borne-infections-in-dogs-and-horses-in-the-state-of-esp%C3%A3-rito-santo-southeast-brazil
#15
Fernanda de Toledo Vieira, Igor Cunha Lima Acosta, Thiago Fernandes Martins, Jonas Moraes Filho, Felipe da Silva Krawczak, Amália Regina Mar Barbieri, Leandro Egert, Danieli Rankel Fernandes, Fabio Ribeiro Braga, Marcelo Bahia Labruna, Reynaldo Dietze
This work aims to identify and quantify the percentage of Rickettsia spp., Ehrlichia spp., Babesia spp. and Hepatozoon spp. positive pet dogs, and to identify ticks collected on these animals in the state of Espírito Santo, in the Southeast region of Brazil. The study included 378 dogs, 226 females and 152 males, of various breeds and ages (mean age of 4.1 years). All animals were examined for ticks, and whole blood was collected and processed by conventional PCR protocols for Babesia spp., Anaplasmataceae, Hepatozoon spp...
January 15, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29277955/tick-borne-illness-after-transplantation-case-and-review
#16
Tresa Reena Mascarenhas, Randi S Silibovsky, Pooja Singh, Katherine Belden
Tick-borne infections in solid organ transplant recipients are an infrequent and difficult diagnostic challenge owing to multiple routes of acquisition and unusual presentations. A 67-year-old male recipient of a combined liver and kidney transplant presented with recurrent fevers following surgery. Standard microbiologic workup was non-diagnostic. Shortness of breath, confusion, lethargy, and hypotension developed along with progressive anemia, requiring multiple blood transfusions. Workup suggested hemolysis and review of the peripheral smear was diagnostic for Babesia microti infection...
December 26, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29275874/australian-penguin-ticks-screened-for-novel-borrelia-species
#17
Katherine L Moon, Steven L Chown, Siew-May Loh, Charlotte L Oskam, Ceridwen I Fraser
Lyme borreliosis (or Lyme Disease) is an emerging threat to human health in the Northern Hemisphere caused by tick-borne bacteria from the Borrelia burgdorferi sensu lato (Bbsl) complex. Seabirds are important reservoir hosts of some members of the Bbsl complex in the Northern Hemisphere, and some evidence suggests this may be true of penguins in the Southern Hemisphere. While the Bbsl complex has not been detected in Australia, a novel Borrelia species ('Candidatus Borrelia tachyglossi') was recently sequenced from native ticks (Ixodes holocyclus and Bothriocroton concolor) parasitising echidnas (Tachyglossus aculeatus), suggesting unidentified borreliae may be circulating amongst native wildlife and their ticks...
December 15, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29258832/characterization-of-the-theileria-parva-sporozoite-proteome
#18
James Nyagwange, Edwin Tijhaar, Nicola Ternette, Fredrick Mobegi, Kyle Tretina, Joana C Silva, Roger Pelle, Vishvanath Nene
East Coast fever is a lymphoproliferative disease caused by the tick-borne protozoan parasite Theileria parva. The sporozoite stage of this parasite, harboured and released from the salivary glands of the tick Rhipicephalus appendiculatus during feeding, invades and establishes infection in bovine lymphocytes. Blocking this initial stage of invasion presents a promising vaccine strategy for control of East Coast fever and can in part be achieved by targeting the major sporozoite surface protein p67. To support research on the biology of T...
December 16, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/29258802/a-molecular-algorithm-to-detect-and-differentiate-human-pathogens-infecting-ixodes-scapularis-and-ixodes-pacificus-acari-ixodidae
#19
Christine B Graham, Sarah E Maes, Andrias Hojgaard, Amy C Fleshman, Sarah W Sheldon, Rebecca J Eisen
The incidence and geographic range of tick-borne illness associated with Ixodes scapularis and Ixodes pacificus have dramatically increased in recent decades. Anaplasmosis, babesiosis, and Borrelia spirochete infections, including Lyme borreliosis, account for tens of thousands of reported cases of tick-borne disease every year. Assays that reliably detect pathogens in ticks allow investigators and public health agencies to estimate the geographic distribution of human pathogens, assess geographic variation in their prevalence, and evaluate the effectiveness of prevention strategies...
December 10, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29258801/diversity-of-borrelia-spirochetes-and-other-zoonotic-agents-in-ticks-from-kyiv-ukraine
#20
Artem Rogovskyy, Maliha Batool, David C Gillis, Patricia J Holman, Igor V Nebogatkin, Yuliya V Rogovska, Maksym S Rogovskyy
Lyme borreliosis (LB) is caused by tick-borne spirochetes of the Borrelia burgdorferi sensu lato complex. LB is the most prevalent vector-borne illness in Ukraine, but current data on the prevalence of LB pathogens in their tick vector, Ixodes ricinus, are lacking. I. ricinus ticks may also carry Borrelia miyamotoi, an emerging relapsing fever group spirochete that has been implicated in human illness. Despite its zoonotic potential, the prevalence of B. miyamotoi in ticks has not been examined in Ukraine. Similarly, data on the prevalence of other important tick-borne pathogens, Anaplasma phagocytophilum, Babesia spp...
December 15, 2017: Ticks and Tick-borne Diseases
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