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https://www.readbyqxmd.com/read/29329629/estimates-of-repeatability-and-correlations-of-hemoparasites-infection-levels-for-cattle-reared-in-endemic-areas-for-rhipicephalus-microplus
#1
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/29310697/epidemiology-genetic-variants-and-clinical-course-of-natural-infections-with-anaplasma-phagocytophilum-in-a-dairy-cattle-herd
#2
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/29307783/prevalence-risk-factors-and-genetic-diversity-of-veterinary-important-tick-borne-pathogens-in-cattle-from-rhipicephalus-microplus-invaded-and-non-invaded-areas-of-benin
#3
Paul Franck Adjou Moumouni, Gilbert Luc Aplogan, Hirotaka Katahira, Yang Gao, Huanping Guo, Artemis Efstratiou, Charoonluk Jirapattharasate, Guanbo Wang, Mingming Liu, Aaron Edmond Ringo, Rika Umemiya-Shirafuji, Hiroshi Suzuki, Xuenan Xuan
Babesiosis, theileriosis, anaplasmosis, and heartwater are tick-borne diseases (TBD) that threaten livestock production in sub-Saharan Africa including Benin. This country has been faced with an invasion of Rhipicephalus microplus, a major vector for babesiosis, theileriosis, and anaplasmosis over the last decade. Yet, data on TBD and the impact of the invasive ticks are lacking, making risk level evaluation and disease control arduous. In this study, epidemiological features of Babesia bovis, B. bigemina, Theileria spp...
December 28, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29306724/first-molecular-evidence-of-equine-granulocytic-anaplasmosis-in-pakistan
#4
Sehrish Saleem, Muhammad Ijaz, Shahid Hussain Farooqi, Muhammad Imran Rashid, Amjad Khan, Awais Masud, Amjad Islam Aqib, Kashif Hussain, Khalid Mehmood, Hui Zhang
Anaplasma phagocytophilum (A. phagocytophilum) is an obligate intracellular bacterium that causes equine granulocytic anaplasmosis (EGA) disease in equines. This pathogen has zoonotic potential, which makes it very important to be detected and controlled as early as possible. This study was aimed to assess the molecular prevalence, associated risk factors of EGA along with its effects on various hematological parameters. This study revealed an overall 10.67% prevalence in equine. Horses showed highest prevalence followed by mules and donkeys presenting 11...
January 4, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29298712/co-infections-with-multiple-genotypes-of-anaplasma-marginale-in-cattle-indicate-pathogen-diversity
#5
Paidashe Hove, Mamohale E Chaisi, Kelly A Brayton, Hamilton Ganesan, Helen N Catanese, Moses S Mtshali, Awelani M Mutshembele, Marinda C Oosthuizen, Nicola E Collins
BACKGROUND: Only a few studies have examined the presence of Anaplasma marginale and Anaplasma centrale in South Africa, and no studies have comprehensively examined these species across the whole country. To undertake this country-wide study we adapted a duplex quantitative real-time PCR (qPCR) assay for use in South Africa but found that one of the genes on which the assay was based was variable. Therefore, we sequenced a variety of field samples and tested the assay on the variants detected...
January 3, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29297797/detection-of-copathogens-in-free-ranging-eastern-box-turtles-terrapene-carolina-carolina-in-illinois-and-tennessee
#6
Grace A Archer, Christopher A Phillips, Laura Adamovicz, Mark Band, John Byrd, Matthew C Allender
Conservation efforts are investigating the impact of diseases within a species of interest, including prevalence and transmission and morbidity and mortality rates. However, the majority of these studies focus solely on the characteristics of a single pathogen. Recently, the role of copathogens has been reported to impact disease susceptibility and mortality. To that effect, a survey was conducted including 318 eastern box turtles ( Terrapene carolina carolina) from populations in Illinois and Tennessee in 2014 and 2015...
December 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
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
#7
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/29280490/doxycycline-treatment-efficacy-in-dogs-with-naturally-occurring-anaplasma-phagocytophilum-infection
#8
C B Yancey, P P V P Diniz, E B Breitschwerdt, B C Hegarty, C Wiesen, B A Qurollo
OBJECTIVES: To evaluate doxycycline treatment efficacy and post-treatment pathogen persistence in dogs naturally infected with Anaplasma phagocytophilum in endemic regions of the USA. MATERIALS AND METHODS: Symptomatic dogs in four US states (MN, WI, CT and CA) were evaluated before treatment with doxycycline and approximately 30 and 60 days post-treatment. Clinicopathological parameters, co-exposures and A. phagocytophilum DNA in whole blood and lymph node samples were compared between A...
December 27, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/29279085/tick-borne-infections-in-dogs-and-horses-in-the-state-of-esp%C3%A3-rito-santo-southeast-brazil
#9
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/29258802/a-molecular-algorithm-to-detect-and-differentiate-human-pathogens-infecting-ixodes-scapularis-and-ixodes-pacificus-acari-ixodidae
#10
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
#11
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
https://www.readbyqxmd.com/read/29258559/immune-related-redox-metabolism-of-embryonic-cells-of-the-tick-rhipicephalus-microplus-bme26-in-response-to-infection-with-anaplasma-marginale
#12
Sandra Patricia Kalil, Rafael Diego da Rosa, Janaína Capelli-Peixoto, Paula Cristiane Pohl, Pedro Lagerblad de Oliveira, Andrea Cristina Fogaça, Sirlei Daffre
BACKGROUND: It is well known that reactive oxygen species (ROS) and reactive nitrogen species (RNS) are involved in the control of pathogens and microbiota in insects. However, the knowledge of the role of ROS and RNS in tick-pathogen and tick-microbiota interactions is limited. Here, we evaluated the immune-related redox metabolism of the embryonic cell line BME26 from the cattle tick Rhipicephalus microplus in response to Anaplasma marginale infection. METHODS: A high-throughput qPCR approach was used to determine the expression profile of 16 genes encoding proteins involved in either production or detoxification of ROS and RNS in response to different microbial challenges...
December 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29249727/expression-purification-and-biological-characterization-of-anaplasma-phagocytophilum-enolase
#13
Xiaoge Gao, Chen Zheng, Xiangye Liu
The obligate intracellular bacteria Anaplasma phagocytophilum is the etiological agent of human granulocytic anaplasmosis (HGA), an acute febrile tick-borne disease. A. phagocytophilum has a complex lifecycle within both vertebrate reservoirs and tick vectors, and employs a range of different molecules to infect and multiply within the host cells. Enolase is an essential glycolytic enzyme in intracellular glucose metabolism, but is also a multifunctional protein expressed on the pathogen surface, that binds to and promotes plasminogen conversion to plasmin...
December 17, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/29246225/pcr-diagnosis-of-anaplasma-marginale-in-cattle-populations-of-ecuador-and-its-molecular-identification-through-sequencing-of-ribosomal-16s-fragments
#14
Leandro Tana-Hernández, Katherine Navarrete-Arroyo, Jorge Ron-Román, Armando Reyna-Bello, María Augusta Chávez-Larrea
BACKGROUND: Bovine anaplasmosis is an endemic disease in tropical and subtropical areas. It is caused by a bacterium named Anaplasma marginale, and represents an economic problem for cattle farmers due to the losses it generates, such as: mortalities, reduced production, quarantine measures, treatments and control of vectors. The method most often used to diagnose this haemotrophic bacterium is direct examination on blood smear, which sensitivity and specificity are limited compared to other methods such as PCR...
December 15, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29243242/cross-sectional-survey-of-health-management-and-prevalence-of-vector-borne-diseases-endoparasites-and-ectoparasites-in-samoan-dogs
#15
R J Carslake, K E Hill, K Sjölander, S F Hii, D Prattley, E Acke
OBJECTIVE: To determine the prevalence of selected canine vector-borne diseases (Leishmania infantum, Anaplasma spp., Ehrlichia canis, Borrelia burgdorferi and Dirofilaria immitis) and endo- and ectoparasites in Samoan dogs presenting for surgical sterilisation and to report on the general health management of the dogs. METHODS: This study was a prospective serological cross-sectional survey. Management data were obtained for 242 dogs by interview with their owners...
December 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/29238699/ticks-and-tick-borne-pathogens-of-the-caribbean-current-understanding-and-future-directions-for-more-comprehensive-surveillance
#16
REVIEW
Mathilde Gondard, Alejandro Cabezas-Cruz, Roxanne A Charles, Muriel Vayssier-Taussat, Emmanuel Albina, Sara Moutailler
Ticks are obligate hematophagous arthropods of significant importance to human and veterinary medicine. They transmit a vast array of pathogens, including bacteria, viruses, protozoa, and helminths. Most epidemiological data on ticks and tick-borne pathogens (TBPs) in the West Indies are limited to common livestock pathogens such as Ehrlichia ruminantium, Babesia spp. (i.e., B. bovis and B. bigemina), and Anaplasma marginale, and less information is available on companion animal pathogens. Of note, human tick-borne diseases (TBDs) remain almost completely uncharacterized in the West Indies...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29232397/distribution-and-prevalence-of-vector-borne-diseases-in-california-chipmunks-tamias-spp
#17
Mary H Straub, Austin N Roy, Amanda Martin, Kathleen E Sholty, Nicole Stephenson, Janet E Foley
California, with 13 chipmunk (Tamias) species, has more than any other state or country, occupying habitats ranging from chaparral to the high peaks of the Sierra Nevada. Chipmunks host zoonotic pathogens including Yersinia pestis, Anaplasma phagocytophilum, relapsing fever (RF) Borrelia spp., Borrelia burgdorferi, and spotted fever group (SFG) Rickettsia species. Chipmunk species are often not differentiated by public health workers, yet different species utilize different ecological niches and may have intrinsically different capacities for maintaining vector-borne pathogens and infecting vectors...
2017: PloS One
https://www.readbyqxmd.com/read/29202672/sensitivity-and-specificity-levels-of-two-rapid-assays-for-antibodies-to-anaplasma-spp-in-dogs
#18
Jiayou Liu, Matthew Eberts, Hannah Bewsey, Thomas P O'Connor, Ramaswamy Chandrashekar, Edward B Breitschwerdt
Canine anaplasmosis is a tick-borne disease of dogs that results following infection with Anaplasma phagocytophilum or Anaplasma platys. The SNAP 4Dx Plus test (IDEXX Laboratories) and the VetScan Canine Anaplasma Rapid test (Abaxis) are commercial in-house rapid tests for the detection of antibody to these 2 antigenically related Anaplasma species. We evaluated 2 tests using serum and whole blood samples obtained from reference laboratories and veterinary hospitals. Samples were obtained from regions of the country known to be habitats of the primary tick vectors...
December 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/29202206/ehrlichia-and-anaplasma-infections-serological-evidence-and-tick-surveillance-in-peninsular-malaysia
#19
Fui Xian Koh, Kai Ling Kho, Masoumeh Ghane Kisomi, Li Ping Wong, Awang Bulgiba, Poai Ean Tan, Yvonne Ai Lian Lim, Quaza Nizamuddin Hassan Nizam, Chandrawathani Panchadcharam, Sun Tee Tay
Little information is available on human anaplasmosis and ehrlichiosis in Southeast Asia despite increasing reports of the detection of Anaplasma spp. and Ehrlichia spp. in the ticks. We report herein the serological findings against the tick-borne pathogens in a group of animal farm workers (n = 87) and indigenous people (n = 102) in Peninsular Malaysia. IgG antibodies against Ehrlichia chaffeensis were detected from 29.9% and 34.3% of farm workers and indigenous people, respectively, using commercial indirect immunofluorescence assays...
November 30, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29197596/historical-review-and-insights-on-the-livestock-tick-borne-disease-research-of-a-developing-country-the-philippine-scenario
#20
REVIEW
Adrian P Ybañez, Claro N Mingala, Rochelle Haidee D Ybañez
Tick-borne diseases (TBDs) remain to be a global animal health threat. Developing countries like the Philippines is not exempt to this. Despite the potential impact TBDs can give to these countries, local government initiatives and researches remain to be limited. In the Philippines, most epidemiological studies were confined only to specific areas, and predominantly in the Northern Area. Due to its unique geography and limited studies, the current nationwide status of most TBDs could not be clearly established...
November 29, 2017: Parasitology International
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