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https://www.readbyqxmd.com/read/29778634/genetic-characterization-of-anaplasma-marginale-strains-from-tunisia-using-single-and-multiple-gene-typing-reveals-novel-variants-with-an-extensive-genetic-diversity
#1
Mourad Ben Said, Alaa Ben Asker, Hanène Belkahia, Raoua Ghribi, Rachid Selmi, Lilia Messadi
Anaplasma marginale, which is responsible for bovine anaplasmosis in tropical and subtropical regions, is a tick-borne obligatory intraerythrocytic bacterium of cattle and wild ruminants. In Tunisia, information about the genetic diversity and the phylogeny of A. marginale strains are limited to the msp4 gene analysis. The purpose of this study is to investigate A. marginale isolates infecting 16 cattle located in different bioclimatic areas of northern Tunisia with single gene analysis and multilocus sequence typing methods on the basis of seven partial genes (dnaA, ftsZ, groEL, lipA, secY, recA and sucB)...
May 12, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29776392/molecular-identification-of-tick-borne-pathogens-in-asymptomatic-individuals-with-human-immunodeficiency-virus-type-1-hiv-1-infection-a-retrospective-study
#2
Renata Welc-Falęciak, Justyna D Kowalska, Małgorzata Bednarska, Magdalena Szatan, Agnieszka Pawełczyk
BACKGROUND: The studies on the occurrence and diversity of tick-borne infections in HIV-infected individuals have been few, and the subject has been relatively neglected when compared with other common infections associated with HIV. In HIV-positive patients in whom a serological diagnostics is complicated due to reduced positive predictive value, a method where the microorganism is detected directly is of great value. Therefore, we performed a molecular study to ascertain the prevalence and incidence of tick-borne infections in HIV-infected persons in Poland, an endemic area for Ixodes ricinus ticks...
May 18, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29776377/shifts-in-borrelia-burgdorferi-s-l-geno-species-infections-in-ixodes-ricinus-over-a-10-year-surveillance-period-in-the-city-of-hanover-germany-and-borrelia-miyamotoi-specific-reverse-line-blot-detection
#3
Katrin Blazejak, Marie-Kristin Raulf, Elisabeth Janecek, Daniela Jordan, Volker Fingerle, Christina Strube
BACKGROUND: Lyme borreliosis caused by spirochetes of the Borrelia burgdorferi (sensu lato) complex is still the most common tick-borne disease in Europe, posing a considerable threat to public health. The predominant vector in Europe is the widespread hard tick Ixodes ricinus, which also transmits the relapsing fever spirochete B. miyamotoi as well as pathogenic Rickettsiales (Anaplasma phagocytophilum, Rickettsia spp.). To assess the public health risk, a long-term monitoring of tick infection rates with the named pathogens is indispensable...
May 18, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29774138/clinical-evaluation-of-morgellons-disease-in-a-cohort-of-north-american-patients
#4
Melissa C Fesler, Marianne J Middelveen, Raphael B Stricker
Morgellons disease (MD) is a dermatological condition characterized by aberrant production of keratin and collagen fibers in skin. Although infection with Borrelia burgdorferi , the causative agent of Lyme disease (LD), has been associated with MD, relatively few studies have hitherto provided epidemiological evidence regarding this association. A cohort of 1000 seropositive North American LD patients was evaluated for the presence of MD. Patients were diagnosed with MD based on detection of microscopic fibers in skin lesions or under unbroken skin...
April 23, 2018: Dermatology Reports
https://www.readbyqxmd.com/read/29762516/seasonal-patterns-in-the-prevalence-and-diversity-of-tick-borne-borrelia-burgdorferi-sensu-lato-anaplasma-phagocytophilum-and-rickettsia-spp-in-an-urban-temperate-forest-in-south-western-slovakia
#5
Michal Chvostáč, Eva Špitalská, Radovan Václav, Tatiana Vaculová, Lenka Minichová, Markéta Derdáková
In Europe, Ixodes ricinus is the most important vector of tick-borne zoonotic bacteria. It transmits spirochaetes from the Borrelia burgdorferi sensu lato complex, Anaplasma phagocytophilum and Rickettsia spp. Although spatial differences in the prevalence of tick-borne pathogens have been intensively studied, seasonal (within-year) fluctuations in the prevalence of these pathogens within sites are often overlooked. We analyzed the occurrence and seasonal dynamics of Ixodes ricinus in an urban forest in Bratislava, Slovakia...
May 15, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29740781/molecular-epidemiology-of-bovine-anaplasmosis-in-khyber-pakhtunkhwa-pakistan
#6
Shahid Hussain Farooqi, Muhammad Ijaz, Muhammad Imran Rashid, H Nabi, S Islam, Amjad Islam Aqib, Kashif Hussain, Amjad Khan, Syeda Nayab Batool Rizvi, Shakeel Mahmood, Khalid Mehmood, Hui Zhang
Bovine anaplasmosis is endemic in Pakistan where it reduces livestock productivity and leads to high mortality, especially in young animals. This study was aimed to identify the potential risk factors responsible for the occurrence and spread of anaplasmosis in cattle and buffaloes for the first time in Pakistan. A total of 900 (cattle = 479, buffalo = 421) blood samples were collected irrespective of age and sex from three distinct zones of Khyber Pakhtunkhhwa (KP) province of Pakistan. Polymerase chain reaction (PCR) technique was used for the molecular detection of anaplasmosis...
May 8, 2018: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29738078/tick-borne-disease-risk-in-a-forest-food-web
#7
Richard S Ostfeld, Taal Levi, Felicia Keesing, Kelly Oggenfuss, Charles D Canham
Changes to the community ecology of hosts for zoonotic pathogens, particularly rodents, are likely to influence the emergence and prevalence of zoonotic diseases worldwide. However, the complex interactions between abiotic factors, pathogens, vectors, hosts, and both food resources and predators of hosts are difficult to disentangle. Here we (1) use 19 years of data from six large field plots in southeastern New York to compare the effects of hypothesized drivers of interannual variation in Lyme disease risk, including the abundance of acorns, rodents, and deer, as well as a series of climate variables; and (2) employ landscape epidemiology to explore how variation in predator community structure and forest cover influences spatial variation in the infection prevalence of ticks for the Lyme disease bacterium, Borrelia burgdorferi, and two other important tick-borne pathogens, Anaplasma phagocytophilum and Babesia microti...
May 8, 2018: Ecology
https://www.readbyqxmd.com/read/29733258/molecular-evidence-of-rickettsia-spp-anaplasma-phagocytophilum-and-candidatus-neoehrlichia-mikurensis-in-ticks-from-natural-and-urban-habitats-in-eastern-romania
#8
Cristian Raileanu, Sara Moutailler, Daniela Porea, Luanda Oslobanu, Dragos Anita, Adriana Anita, Muriel Vayssier-Taussat, Gheorghe Savuta
Ixodid ticks are competent vectors for multiple pathogens, several of which cause infections in human. The medical importance of tick-borne pathogens is well known, yet unanswered questions remain regarding the occurrence of pathogens such as Rickettsia spp., Anaplasma phagocytophilum, and "Candidatus Neoehrlichia mikurensis" in questing ticks in Romania. Our objectives were to identify three emerging tick-borne zoonotic pathogens in eastern Romania, to assess their prevalence, establish co-infection rates, and to compare infection levels of selected pathogens in questing ticks collected from one suburban area in the city of Iaşi and one forested area located in the Danube Delta Biosphere Reserve...
May 7, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29730989/identification-of-tick-borne-pathogen-diversity-by-metagenomic-analysis-in-haemaphysalis-longicornis-from-xinyang-china
#9
Lu Zhuang, Juan Du, Xiao-Ming Cui, Hao Li, Fang Tang, Pan-He Zhang, Jian-Gong Hu, Yi-Gang Tong, Zhi-Chun Feng, Wei Liu
BACKGROUND: A wide variety of pathogens could be maintained and transmitted by Haemaphysalis longicornis. The aim of this study is to systematically examine the variety of pathogens carried by Haemaphysalis longicornis, an importnatn vector, in tick-borne diseases epidemic area, and to estimate the risk of human infection imposed by tick bites. METHODS: Adult questing ticks were collected in Xinyang, central China. Genomic DNA and RNA were extracted from 144 H. longicornis ticks individually, and sequenced respectively as the templates for high-throughput sequencing...
May 7, 2018: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/29713635/detection-of-tick-borne-pathogens-in-lambs-undergoing-prophylactic-treatment-against-ticks-on-two-swedish-farms
#10
Giulio Grandi, Anna Aspán, Jenny Pihl, Katarina Gustafsson, Fredrik Engström, Tomas Jinnerot, Robert Söderlund, Jan Chirico
Tick-borne pathogens (TBPs), especially Anaplasma phagocytophilum , cause disease in grazing livestock. Tick prophylaxis is, therefore, a routine practice in sheep flocks in Sweden, especially in central, southern, and coastal areas of the country where ixodid ticks ( Ixodes ricinus and Haemaphysalis punctata ) are present. In the present study, the status of infection by A. phagocytophilum and other TBPs in lambs treated with tick prophylaxis has been assessed serologically and with polymerase chain reaction (PCR)...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29709988/first-molecular-detection-and-phylogenetic-analysis-of-anaplasma-phagocytophilum-from-a-clinical-case-of-canine-granulocytic-anaplasmosis-in-japan
#11
Yuichi Fukui, Seigo Ohkawa, Hisashi Inokuma
Anaplasma phagocytophilum DNA was detected from a dog with canine granulocytic anaplasmosis (CGA) in Japan. Phylogenetic analysis of the DNA using 16s rRNA, gltA, and groEL sequences revealed that the strain was nearly identical to A. phagocytophilum detected from Apodemus agrarius (black-striped field mouse) in China and Korea. This report is the first phylogenetic study on A. phagocytophilum from a CGA case in Japan.
April 27, 2018: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29696073/a-cross-sectional-study-of-small-mammals-for-tick-borne-pathogen-infection-in-northern-mongolia
#12
Laura A Pulscher, Thomas C Moore, Luke Caddell, Lkhagvatseren Sukhbaatar, Michael E von Fricken, Benjamin D Anderson, Battsetseg Gonchigoo, Gregory C Gray
Background : Tick-borne pathogens (TBPs) are frequently studied in developed nations but are often neglected in emerging countries. In Mongolia, TBP research is especially sparse, with few research reports focusing upon human and domestic animal disease and tick ecology. However, little information exists on TBPs in small mammals. Methods : In this 2016 cross-sectional pilot study, we sought to uniquely study wildlife for TBPs. We live-trapped small mammals, and tested their whole blood, serum and ear biopsy samples for molecular or serological evidence of Borrelia spp...
2018: Infection Ecology & Epidemiology
https://www.readbyqxmd.com/read/29686681/-anaplasma-phagocytophilum-related-defects-in-cd8-nkt-and-nk-lymphocyte-cytotoxicity
#13
Diana G Scorpio, Kyoung-Seong Choi, J Stephen Dumler
Human granulocytic anaplasmosis, caused by the tick-transmitted Anaplasma phagocytophilum , is not controlled by innate immunity, and induces a proinflammatory disease state with innate immune cell activation. In A. phagocytophilum murine infection models, hepatic injury occurs with production of IFNγ thought to be derived from NK, NKT cells, and CD8 T lymphocytes. Specific A. phagocytophilum ligands that drive inflammation and disease are not known, but suggest a clinical and pathophysiologic basis strikingly like macrophage activation syndrome (MAS) and hemophagocytic syndrome (HPS)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29679202/tick-infestation-and-occurrence-of-anaplasma-phagocytophilum-and-piroplasms-in-cattle-in-the-republic-of-serbia
#14
Ana Vasić, Marion Nieder, Nemanja Zdravković, Jovan Bojkovski, Dejan Bugarski, Ivan Pavlović, Cornelia Silaghi
Ticks transmit important pathogens affecting cattle such as intracellular bacteria of the genus Anaplasma or protozoa of the order Piroplasmida. This study aimed at assessing tick species present on pastures and cattle and determining occurrence of the tick-borne pathogens Anaplasma phagocytophilum and Babesia spp. in cattle. During May and June 2013, ticks and EDTA blood were collected from 185 dairy cows at six locations in Serbia. Ticks were also collected directly from the pastures at four of these locations...
April 20, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29678403/tick-borne-encephalitis-virus-borrelia-burgdorferi-sensu-lato-borrelia-miyamotoi-anaplasma-phagocytophilum-and-candidatus-neoehrlichia-mikurensis-in-ixodes-ricinus-ticks-collected-from-recreational-islands-in-southern-norway
#15
Vivian Kjelland, Katrine M Paulsen, Rikke Rollum, Andrew Jenkins, Snorre Stuen, Arnulf Soleng, Kristin S Edgar, Heidi H Lindstedt, Kirsti Vaino, Moustafa Gibory, Åshild K Andreassen
The aim of this study was to determine the occurrence of tick-borne pathogens of medical importance in questing ticks collected from five recreationally used islands along the Norwegian coastline. Furthermore, since coinfection may affect the disease severity, this study aimed to determine the extent of coinfection in individual ticks or co-localization of tick-borne pathogens. In all, 4158 questing Ixodes ricinus ticks were analyzed. For detection of tick-borne encephalitis virus (TBEV), nymphs (3690) were analyzed in pools of ten...
April 12, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29678402/golden-jackals-canis-aureus-as-hosts-for-ticks-and-tick-borne-pathogens-in-serbia
#16
Ratko Sukara, Dimosthenis Chochlakis, Duško Ćirović, Aleksandra Penezić, Darko Mihaljica, Sanja Ćakić, Miroslav Valčić, Yannis Tselentis, Anna Psaroulaki, Snežana Tomanović
The golden jackal (Canis aureus) is a medium-sized canid species native to Europe. This species is characterized by rapid large-scale expansion. A similar trend is also observed in Serbia, where the species is now distributed in more than a half of the territory. Although jackals prefer habitats in human-dominated landscapes, these animals have not been studied well enough from an eco-epidemiological point of view, and little is known about their potential for carrying zoonotic pathogens. In a study conducted during a three-year period (01/2010-02/2013), a total of 216 hunted or road-killed golden jackals were collected from 10 localities in Serbia...
April 10, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29673387/first-report-of-anaplasma-ovis-in-pupal-and-adult-melophagus-ovinus-sheep-ked-collected-in-south-xinjiang-china
#17
Li Zhao, Bo He, Kai-Rui Li, Fei Li, Lu-Yao Zhang, Xian-Qiang Li, Yong-Hong Liu
BACKGROUND: Melophagus ovinus (sheep ked) is a blood-feeding ectoparasite that belongs to the family Hippoboscidae (Diptera: Hippoboscoidea) and mainly parasitizes sheep. The life-cycle of M. ovinus consists of three stages: larva, pupa and adult. It has a worldwide distribution and has been found in four provinces of China, especially South Xinjiang. In addition to causing direct damage to animal hosts, M. ovinus serves as a vector for disease transmission. In this study, our aim was to investigate the presence of Anaplasma spp...
April 19, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29664950/body-lice-of-homeless-people-reveal-the-presence-of-several-emerging-bacterial-pathogens-in-northern-algeria
#18
Meriem Louni, Nassima Mana, Idir Bitam, Mustapha Dahmani, Philippe Parola, Florence Fenollar, Didier Raoult, Oleg Mediannikov
BACKGROUND: Human lice, Pediculus humanus, are obligate blood-sucking parasites. Body lice, Pediculus h. humanus, occur in two divergent mitochondrial clades (A and D) each exhibiting a particular geographic distribution. Currently, the body louse is recognized as the only vector for louse-borne diseases. In this study, we aimed to study the genetic diversity of body lice collected from homeless populations in three localities of northern Algeria, and to investigate louse-borne pathogens in these lice...
April 17, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29657007/update-on-flea-and-tick-associated-diseases-of-cats
#19
Michael R Lappin
There are multiple vector-borne diseases in cats, the most prominent being those transmitted by mosquitos, sand flies, fleas, and ticks. Many of the agents vectored by fleas or ticks have been grown or amplified from blood or have induced antibodies in the serum of normal cats or those with clinical signs like fever and will be the focus of this manuscript. As high as 80% of fleas collected from cats contain at least one organism that could induce illness in cats or people. Anaplasma phagocytophilum, Bartonella spp...
April 30, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29653174/molecular-detection-of-anaplasma-phagocytophilum-like-anaplasma-spp-and-pathogenic-a-phagocytophilum-in-cattle-from-south-korea
#20
Min-Goo Seo, In-Ohk Ouh, Oh-Deog Kwon, Dongmi Kwak
Anaplasma phagocytophilum is the causative agent of human granulocytic anaplasmosis and tick-borne fever in domestic ruminants. Differential diagnosis of zoonotic and pathogenic tick-borne diseases like granulocytic anaplasmosis is important for the efficient implementation of control programs. Thus, the differentiation of pathogenic A. phagocytophilum from non-pathogenic A. phagocytophilum-like (APL) Anaplasma spp. is essential. Recent molecular analyses of APL revealed its distinct phylogenetic position from A...
April 10, 2018: Molecular Phylogenetics and Evolution
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