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Tick borne

Joris Koetsveld, Nadezhda M Kolyasnikova, Alex Wagemakers, Olga A Stukolova, Dieuwertje Hoornstra, Denis S Sarksyan, Marina G Toporkova, Anna J Henningsson, Dag Hvidsten, Wim Ang, Ram Dessau, Alexander E Platonov, Joppe W Hovius
OBJECTIVES: Borrelia miyamotoi disease (BMD) is an emerging tick-borne disease in the Northern hemisphere. Serodiagnosis by measuring antibodies against glycerophosphodiester-phosphodiesterase (GlpQ) is performed experimentally, but has not been extensively clinically validated. Since we have previously shown the differential expression of antigenic variable major proteins (Vmps) in B. miyamotoi, our aim was to study antibody responses against GlpQ and Vmps in PCR-proven BMD patients and controls...
March 14, 2018: Clinical Microbiology and Infection
Robin B McFee, Larry Bush, Maria T Vazquez-Pertejo
No abstract text is available yet for this article.
March 14, 2018: Disease-a-month: DM
Felicia Keesing, Richard S Ostfeld
Prevention of tick-borne diseases in humans is challenging. To date, no prevention strategies have been shown to be consistently effective. Here, we describe the design of a new large-scale study, involving hundreds of households in Dutchess County, New York, testing whether environmental interventions, applied intensively and over 4 years, can prevent human cases.
March 13, 2018: Trends in Parasitology
Hiroko Ejiri, Chang-Kweng Lim, Haruhiko Isawa, Ryosuke Fujita, Katsunori Murota, Tomomi Sato, Daisuke Kobayashi, Miki Kan, Masashi Hattori, Toshiya Kimura, Yukie Yamaguchi, Mutsuyo Takayama-Ito, Madoka Horiya, Guillermo Posadas-Herrera, Shohei Minami, Ryusei Kuwata, Hiroshi Shimoda, Ken Maeda, Yukie Katayama, Tetsuya Mizutani, Masayuki Saijo, Koki Kaku, Hiroto Shinomiya, Kyoko Sawabe
The genus Thogotovirus, as represented by Thogoto virus and Dhori virus, comprises a group of arthropod-borne viruses, most members of which are transmitted by ticks. Here we report the genetic and biological characterization of a new thogotovirus, designated Oz virus (OZV), isolated from the hard tick Amblyomma testudinarium in Ehime, Japan. OZV efficiently replicated and induced a cytopathic effect in Vero cells, from which enveloped pleomorphic virus particles were formed by budding. OZV could also replicate in BHK-21 and DH82 cells and caused high mortality in suckling mice after intracerebral inoculation...
March 13, 2018: Virus Research
Valentina Serra, Alessandra Cafiso, Nicoletta Formenti, Hélène Verheyden, Olivier Plantard, Chiara Bazzocchi, Davide Sassera
Midichloria mitochondrii is a tick-borne intracellular bacterium of the order Rickettsiales, found with high prevalence in the sheep tick ( Ixodes ricinus). Midichloria mitochondrii is capable of vertical transmission in the tick, but recently evidence of potential horizontal transmission to the tick hosts through the blood meal has been reported. We investigated the presence of the bacterium in the blood of roe deer ( Capreolus capreolus) collected from an area known to be highly infested with I. ricinus ticks...
March 16, 2018: Journal of Wildlife Diseases
Memi Muto, Wataru Kamitani, Mizuki Sakai, Minato Hirano, Shintaro Kobayashi, Hiroaki Kariwa, Kentaro Yoshii
Tick-borne encephalitis virus (TBEV) causes severe neurological disease, but the pathogenetic mechanism is unclear. The conformational structure of the 3'-untranslated region (UTR) of TBEV is associated with its virulence. We tried to identify host proteins interacting with the 3'-UTR of TBEV. Cellular proteins of HEK293T cells were co-precipitated with biotinylated RNAs of the 3'-UTR of low- and high-virulence TBEV strains and subjected to mass spectrometry analysis. Fifteen host proteins were found to bind to the 3'-UTR of TBEV, four of which- cold shock domain containing-E1 (CSDE1), spermatid perinuclear RNA binding protein (STRBP), fragile X mental retardation protein (FMRP), and interleukin enhancer binding factor 3 (ILF3)-bound specifically to that of the low-virulence strain...
March 12, 2018: Virus Research
Richard Lindqvist, Chaitanya Kurhade, Jonathan D Gilthorpe, Anna K Överby
BACKGROUND: Flaviviruses are a group of diverse and emerging arboviruses and an immense global health problem. A number of flaviviruses are neurotropic, causing severe encephalitis and even death. Type I interferons (IFNs) are the first line of defense of the innate immune system against flavivirus infection. IFNs elicit the concerted action of numerous interferon-stimulated genes (ISGs) to restrict both virus infection and replication. Viperin (virus-inhibitory protein, endoplasmic reticulum-associated, IFN-inducible) is an ISG with broad-spectrum antiviral activity against multiple flaviviruses in vitro...
March 15, 2018: Journal of Neuroinflammation
Yasutaka Tajima, Hiroaki Yaguchi, Yasunori Mito
To date, the only instance of tick-borne encephalitis (TBE) in Japan was reported from the southern part of Hokkaido Island in 1993; no other cases have been reported since then. We herein report the first case of TBE reported in the central part of Hokkaido Island, and describe the fatal clinical course of a patient who presented with meningoencephalomyelitis, which partly involved the nerve root. Magnetic resonance imaging (MRI) of the patient's cranium and spine revealed characteristic central nervous system involvement...
2018: Internal Medicine
Silvia Zingg, Patrick Dolle, Maarten Jeroen Voordouw, Maren Kern
BACKGROUND: Ticks and tick-borne pathogens are a global problem for the health of humans and their livestock. Wood ants are important ecosystem engineers in forests worldwide. Although both taxa are well studied, little is known about their interactions under natural conditions. The purpose of the present field study was to test whether European red wood ants (Formica polyctena) influence the abundance of Ixodes tick populations in temperate forests. METHODS: Data collection took place in 130 sampling plots located at 26 ant nest sites paired with 26 control sites in northwestern Switzerland...
March 15, 2018: Parasites & Vectors
Junming Shi, Zhihong Hu, Fei Deng, Shu Shen
Ticks are important vectors for the transmission of pathogens including viruses. The viruses carried by ticks also known as tick-borne viruses (TBVs), contain a large group of viruses with diverse genetic properties and are concluded in two orders, nine families, and at least 12 genera. Some members of the TBVs are notorious agents causing severe diseases with high mortality rates in humans and livestock, while some others may pose risks to public health that are still unclear to us. Herein, we review the current knowledge of TBVs with emphases on the history of virus isolation and identification, tick vectors, and potential pathogenicity to humans and animals, including assigned species as well as the recently discovered and unassigned species...
March 13, 2018: Virologica Sinica
Safiou B Adehan, Hassane Adakal, Donald Gbinwoua, Daté Yokossi, Sébastien Zoungrana, Patrice Toé, Mathieu Ouedraogo, A Michel Gbaguidi, Camus Adoligbé, A Belarmin Fandohan, Gildas Hounmanou, Romain Glèlè Kakaï, Souaïbou Farougou, Eva M De Clercq
Worldwide, cattle production is struggling to face the negative impacts caused by ticks and Rhipicephalus (Boophilus) microplus is one of the most harmful ticks for livestock. Most of the people in West Africa depend on cattle farming and subsistence agriculture. The presence of ticks on cattle is a major problem faced by smallholder farmers who fight for their livelihood. National and regional tick control programs could assist these rural communities in protecting their livelihoods against ticks and tick-borne diseases, but only if they take into account the targeted herders and their perception on cattle management and tick control...
March 13, 2018: EcoHealth
Jinho Park, Du-Gyeong Han, Ji-Hyoung Ryu, Jeong-Byoung Chae, Joon-Seok Chae, Do-Hyeon Yu, Bae-Keun Park, Hyeon-Cheol Kim, Kyoung-Seong Choi
Anaplasmosis is a tick-borne infectious disease that affects both human and animal health. This study was performed to characterize and investigate the prevalence of infection with Anaplasma bovis in Holstein cattle originating from two regions in the Republic of Korea (ROK). Blood samples (n = 151; 80 from Namwon and 71 from Jeju Island) were analyzed by polymerase chain reaction, and the prevalence of A. bovis infection was compared before and after grazing. In Namwon, A. bovis infection was not detected, while in the Jeju Island, A...
March 12, 2018: Acta Veterinaria Scandinavica
Mohammad Saiful Islam, Myung-Jo You
Tick saliva is critically important for continuous attachment to the host, blood feeding for days, and transmission of tick-borne pathogens. To characterize the patterns of inflammatory cytokine gene expression during its attachment and blood sucking time, peripheral blood samples of rabbits infested with Haemaphysalis longicornis ticks were collected at different intervals. Blood histamine concentration was evaluated as well as gene encoding IFN-γ, TNF-α, IL-2, IL-6, IL-4, and IL-10 were compared with non-infested rabbits...
February 2018: Korean Journal of Parasitology
Robin B McFee
No abstract text is available yet for this article.
March 7, 2018: Disease-a-month: DM
Mengfei Wang, Dan Zhu, Jianfeng Dai, Zhengwei Zhong, Yi Zhang, Jingwen Wang
Ticks are important disease vectors as they transmit a variety of human and animal pathogens worldwide. Symbionts that co-evolved with ticks confer crucial benefits to their host in nutrition metabolism, fecundity and vector competence. Although over a hundred-tick species have been identified in China, general information of tick symbiosis is limited. Here, we visualized the tissue distribution of Coxiella sp. and Rickettsia sp. in lab reared Haemaphysalis longicornis and Rhipicephalus haemaphysaloides by fluorescent in situ hybridization...
March 9, 2018: Applied and Environmental Microbiology
Anne-Claire Lagrée, Clotilde Rouxel, Maëllys Kevin, Thibaud Dugat, Guillaume Girault, Benoît Durand, Martin Pfeffer, Cornelia Silaghi, Marion Nieder, Henri-Jean Boulouis, Nadia Haddad
BACKGROUND: Anaplasma phagocytophilum is a zoonotic tick-borne intracellular alpha-proteobacterium causing tick-borne fever, which leads to significant economic losses in domestic ruminants in Europe. Its epidemiological cycles are complex and reservoir host species of bovine strains have not yet been identified. Given that little genetic information is available on strains circulating within a defined bovine environment, our objective was to assess the genetic diversity of A. phagocytophilum obtained from the same farms over time...
March 9, 2018: Parasites & Vectors
Daniel E Sonenshine
Ticks are the major vectors of most disease-causing agents to humans, companion animals and wildlife. Moreover, ticks transmit a greater variety of pathogenic agents than any other blood-feeding arthropod. Ticks have been expanding their geographic ranges in recent decades largely due to climate change. Furthermore, tick populations in many areas of their past and even newly established localities have increased in abundance. These dynamic changes present new and increasing severe public health threats to humans, livestock and companion animals in areas where they were previously unknown or were considered to be of minor importance...
March 9, 2018: International Journal of Environmental Research and Public Health
Yanfang Zhang, Shu Shen, Yaohui Fang, Jinliang Liu, Zhengyuan Su, Jinhao Liang, Zhong Zhang, Qiaoli Wu, Cheng Wang, Abulikemu Abudurexiti, Zhihong Hu, Yujiang Zhang, Fei Deng
Crimean-Congo hemorrhagic fever (CCHF) caused by the CCHF virus (CCHFV) is a tick-borne natural focal disease with a mortality rate of approximately 50%. CCHFV is widely prevalent in Africa, southern Asia, the Middle East, and southeast Europe. CCHF outbreaks have been reported previously in Xinjiang province, China, especially in its southern region. Epidemiological surveys conducted on ticks and animals have revealed the presence of CCHFV strains in ticks, rodents, and infected individuals from cities and counties in southern Xinjiang...
March 8, 2018: Virologica Sinica
Juntra Wattanamethanont, Morakot Kaewthamasorn, Sonthaya Tiawsirisup
Ixodid ticks are important vectors of tick-borne disease agents affecting humans and animals, with wildlife often serving as important reservoirs. This study examined protozoal and bacterial infection in questing ticks in forest habitats in Chonburi Province, Thailand in 2015, using PCR and DNA sequencing techniques. A total of 12,184 ticks were morphologically identified to species and a subset of ticks were confirmed by PCR, targeting the tick mitochondrial 16S rRNA gene. Tick species collected included Haemaphysalis lagrangei (92...
March 5, 2018: Ticks and Tick-borne Diseases
Ιlias Chaligiannis, Isabel G Fernández de Mera, Anna Papa, Smaragda Sotiraki, José de la Fuente
Ticks are vectors for a variety of human and animal pathogens (bacteria, protozoa and viruses). In order to investigate the pathogens carried by ticks in Greece, a total of 179 adult ticks (114 female and 65 male) were collected from domestic animals (sheep, goats and dogs) from 14 prefectures of six regions of Greece. Among them, 40 were Dermacentor marginatus, 25 Haemaphysalis parva, 22 H. sulcata, one H. punctata, 13 Ixodes gibbosus, 77 Rhipicephalus sanguineus s.l. and one R. bursa. All ticks were tested for the presence of DNA of Anaplasma spp...
March 7, 2018: Experimental & Applied Acarology
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