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Theileria orientalis

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https://www.readbyqxmd.com/read/29155863/molecular-detection-of-tick-borne-pathogens-in-cattle-from-southwestern-ethiopia
#1
Zerihun Hailemariam, Jürgen Krücken, Maximilian Baumann, Jabbar S Ahmed, Peter-Henning Clausen, Ard M Nijhof
Tick-borne diseases (TBDs) cause significant losses among livestock and impact the livelihoods of resource-poor farming communities worldwide. In Ethiopia, detailed studies on the epidemiology of tick-borne pathogens (TBPs) in cattle using sensitive molecular detection methods are scarce. The objective of this study was to determine the prevalence and species composition of bovine TBPs of veterinary significance in local cattle populations. A comprehensive cross-sectional epidemiological study was conducted in cattle populations of Illubabor zone in Southwestern Ethiopia from June to August 2013...
2017: PloS One
https://www.readbyqxmd.com/read/29119682/molecular-identification-of-tick-borne-pathogens-infecting-cattle-in-mymensingh-district-of-bangladesh-reveals-emerging-species-of-anaplasma-and-babesia
#2
B C Roy, J Krücken, J S Ahmed, S Majumder, M P Baumann, P-H Clausen, A M Nijhof
Tick-borne diseases are considered a major hindrance to the health and productive performance of cattle in Bangladesh. To elucidate the epidemiology of tick-borne pathogens (TBPs) in local cattle, a cross-sectional study was performed in the 12 subdistricts (Upazilas) of Mymensingh district in Bangladesh. Blood samples and ticks were collected from 384 clinically healthy cattle kept by 135 farmers from 96 randomly selected villages. DNA extracted from the blood samples was subsequently screened by polymerase chain reaction (PCR) and a Reverse Line Blot (RLB) hybridization assay using an in-house prepared chemiluminescence solution for the presence of Anaplasma, Ehrlichia, Rickettsia, Babesia and Theileria spp...
November 8, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29103263/hematological-changes-associated-with-theileria-orientalis-infection-in-korean-indigenous-cattle
#3
Suhee Kim, Do-Hyeon Yu, Sung-Woo Kang, Jeong-Byoung Chae, Kyoung-Seong Choi, Hyeon-Cheol Kim, Bae-Keun Park, Joon-Seok Chae, Jinho Park
Tick-borne pathogens can cause serious problems in grazing cattle. However, little information is available on tick-mediated diseases in cattle grazing on mountains. Thus, this study aimed to understand the potential problems related to tick-borne diseases in grazing cattle through the investigation of prevalent tick-transmitted infections, and their associated hematological changes, in terms of season and grazing type in Korean indigenous cattle (=Hanwoo). Hanwoo cattle from 3 regions of the Republic of Korea (=Korea) were either maintained indoors or placed on grassy mountains from spring to fall of 2014 and 2015...
October 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29078748/whole-genome-assembly-of-babesia-ovata-and-comparative-genomics-between-closely-related-pathogens
#4
Junya Yamagishi, Masahito Asada, Hassan Hakimi, Takeshi Q Tanaka, Chihiro Sugimoto, Shin-Ichiro Kawazu
BACKGROUND: Babesia ovata, belonging to the phylum Apicomplexa, is an infectious parasite of bovids. It is not associated with the manifestation of severe symptoms, in contrast to other types of bovine babesiosis caused by B. bovis and B. bigemina; however, upon co-infection with Theileria orientalis, it occasionally induces exacerbated symptoms. Asymptomatic chronic infection in bovines is usually observed only for B. ovata. Comparative genomic analysis could potentially reveal factors involved in these distinguishing characteristics; however, the genomic and molecular basis of these phenotypes remains elusive, especially in B...
October 27, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29020888/clinical-haematology-and-biochemistry-profiles-of-cattle-naturally-infected-with-theileria-orientalis-ikeda-type-in-new-zealand
#5
K E Lawrence, S F Forsyth, B L Vaatstra, Amj McFadden, D J Pulford, K Govindaraju, W E Pomroy
AIMS: To present the haematology and biochemistry profiles for cattle in New Zealand naturally infected with Theileria orientalis Ikeda type and investigate if the results differed between adult dairy cattle and calves aged <6 months. METHODS: Haematology and biochemistry results were obtained from blood samples from cattle which tested positive for T. orientalis Ikeda type by PCR, that were submitted to veterinary laboratories in New Zealand between October 2012 and November 2014...
January 2018: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28969833/monitoring-theileria-orientalis-ikeda-associated-bovine-anaemia-in-affected-cattle-over-time
#6
Amj McFadden, M Hart, I M Bueno, H J Ha, Acg Heath, D J Pulford
The aim of the study was to observe changes in haematocrit (HCT) over time in a New Zealand South Island dairy herd affected by an outbreak of Theileria-associated bovine anaemia (TABA; Ikeda). A secondary aim was to relate individual cow HCTs to the amount of Theileria orientalis Ikeda DNA present in the blood, as measured by cycle threshold values, using a quantitative PCR (qPCR). Over a 6 month period, blood samples from 19 randomly selected cattle were monitored from a herd of 600 dairy cows. The sampling interval was approximately fortnightly for the first six weeks, followed by sampling at between four and six week intervals...
October 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28870131/re-cluster-analysis-of-the-clinical-histories-of-cattle-affected-with-bovine-anaemia-associated-with-theileria-orientalis-ikeda-type-infection
#7
(no author information available yet)
No abstract text is available yet for this article.
September 4, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28807298/using-a-rule-based-envelope-model-to-predict-the-expansion-of-habitat-suitability-within-new-zealand-for-the-tick-haemaphysalis-longicornis-with-future-projections-based-on-two-climate-change-scenarios
#8
K E Lawrence, S R Summers, A C G Heath, A M J McFadden, D J Pulford, A B Tait, W E Pomroy
Haemaphysalis longicornis is the only species of tick present in New Zealand which infests livestock and is also the only competent vector for Theileria orientalis. Since 2012, New Zealand has suffered from an epidemic of infectious bovine anaemia associated with T. orientalis, an obligate intracellular protozoan parasite of cattle and buffaloes. The aim of this study was to predict the spatial distribution of habitat suitability of New Zealand for the tick H. longicornis using a simple rule-based climate envelope model, to validate the model against published data and use the validated model to project an expansion in habitat suitability for H...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28780889/cluster-analysis-of-the-clinical-histories-of-cattle-affected-with-bovine-anaemia-associated-with-theileria-orientalis-ikeda-type-infection
#9
K E Lawrence, S F Forsyth, B L Vaatstra, Amj McFadden, D J Pulford, K Govindaraju, W E Pomroy
AIM: To determine the most commonly used words in the clinical histories of animals naturally infected with Theileria orientalis Ikeda type; whether these words differed between cases categorised by age, farm type or haematocrit (HCT), and if there was any clustering of the common words in relation to these categories. METHODS: Clinical histories were transcribed for 605 cases of bovine anaemia associated with T. orientalis (TABA), that were submitted to laboratories with blood samples which tested positive for T...
August 21, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28750636/pathogenic-genotype-of-major-piroplasm-surface-protein-associated-with-anemia-in-theileria-orientalis-infection-in-cattle
#10
Suhee Kim, Do-Hyeon Yu, Jeong-Byoung Chae, Kyoung-Seong Choi, Hyeon-Cheol Kim, Bae-Keun Park, Joon-Seok Chae, Jinho Park
Serious disease outbreaks in cattle caused by Theileria orientalis have emerged in the Asia-Pacific region. Genetic variables of the major piroplasm surface protein (MPSP) expressed on the surface of the piroplasm inside T. orientalis-infected erythrocytes are considered to be associated with variation in the pathogenicity of T. orientalis. Our study describes the clinically relevant MPSP types associated with anemia in Theileria-infected cattle. These results revealed that MPSP expression plays an important role in hematological alterations in Theileria-infected cattle, and that MPSP type 1 is strongly associated with bovine anemia, which can be a potential target for the prevention of bovine theileriosis...
July 27, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28673460/a-survey-of-canine-haemoprotozoan-parasites-from-turkey-including-molecular-evidence-of-an-unnamed-babesia
#11
Munir Aktas, Sezayi Ozubek
Canine tick-borne apicomplexan parasites have emerged in recent years, showing a wider geographic distribution and increased global prevalence. A reverse line blot assay was performed on 219 blood samples collected from domestic dogs for simultaneous detection of all named canine piroplasm species as well as Hepatozoon canis. Ten samples hybridized to the Theileria/Babesia and Babesia catch all probes but did not hybridize to any species-specific probe tested, suggesting the presence of an unrecognized Babesia species or genotype...
June 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28555954/prevalence-and-effect-of-theileria-orientalis-infection-in-homebred-calves-in-the-gloucester-region-of-new-south-wales-australia
#12
E Swilks, C Jenkins, A Poynting, D Collins, G L Krebs
OBJECTIVES: To examine the prevalence of Theileria orientalis in the Gloucester area of New South Wales and its effect on individual animals. METHODS: Blood samples (EDTA and clotted blood) were collected from a total of 55 calves and their dams from 6 properties over a 16-week period. A total of 202 and 190 blood samples were collected from the calves and dams, respectively, and were examined via blood film for the presence of intraerythrocytic T. orientalis piroplasms...
June 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28555951/in-this-issue-june-2017-home-ranges-of-dogs-in-nt%C3%A2-%C3%A2-%C3%A2-comparing-vet-student-animal-welfare-priorities%C3%A2-%C3%A2-%C3%A2-sources-of-animals-surrendered-and-euthanased-in-an-animal-shelter%C3%A2-%C3%A2-%C3%A2-carbamate-toxicoses-in-a-dog%C3%A2-%C3%A2-%C3%A2-lowland-copperhead-envenomation-in-a-dog%C3%A2-%C3%A2
#13
EDITORIAL
https://www.readbyqxmd.com/read/28482923/transplacental-transmission-of-theileria-orientalis-occurs-at-a-low-rate-in-field-affected-cattle-infection-in-utero-does-not-appear-to-be-a-major-cause-of-abortion
#14
Emma Swilks, Shayne A Fell, Jade F Hammer, Narelle Sales, Gaye L Krebs, Cheryl Jenkins
BACKGROUND: Bovine theileriosis, caused by the haemoprotozoan Theileria orientalis, is an emerging disease in East Asia and Australasia. Previous studies have demonstrated transplacental transmission of various Theileria spp. but molecular confirmation of transplacental transmission of T. orientalis has never been confirmed in the field. In this study, cow-calf (< 48 h old) pairs were sampled across 3 herds; opportunistic samples from aborted foetuses or stillborn calves were also examined...
May 8, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28427963/molecular-investigation-of-piroplasma-infection-in-white-yaks-bos-grunniens-in-gansu-province-china
#15
Sitong Li, Junlong Liu, Aihong Liu, Youquan Li, Shuqing Wang, Shufang Wang, Hong Yin, Jianxun Luo, Guiquan Guan
Piroplasmosis, including theileriosis and babesiosis, is a tick-borne haemoprotozoan disease responsible for huge economic losses to livestock industry. In China, the biology of piroplasms infective to cattle was well understood on the basis of pathogen isolations and molecular epidemiological surveys in the past few decades. But very limited information about the infection status of piroplasms in white yak (Bos grunniens), a semi-wild and endemic breed, has been recorded, so far. A total of 350 blood samples was collected from white yaks in 11 towns of Tianzhu Tibetan Autonomous County of Gansu province, China, during April to July 2015...
July 2017: Acta Tropica
https://www.readbyqxmd.com/read/28361802/molecular-characterization-of-babesia-and-theileria-species-in-ticks-collected-in-the-outskirt-of-monte-romano-lazio-region-central-italy
#16
Luciano Toma, Marco Di Luca, Fabiola Mancini, Francesco Severini, Carmela Mariano, Giancarlo Nicolai, Valentina Laghezza Masci, Alessandra Ciervo, Anna Maria Fausto, Simone Mario Cacciò
BACKGROUND: In 2012-2013, an investigation was carried out in the Viterbo province, Lazio region, on ticks and tick-borne Apicomplexan protozoa of the Babesia and Theileria genera. This followed the reporting of high density of ticks by soldiers operating in a military shooting range, and the signaling by owners and local veterinary authorities of several cases of babesiosis among cattle. METHODS: A total of 422 ticks were collected from 35 heads, whereas 96 ticks were collected by dragging...
January 2017: Annali Dell'Istituto Superiore di Sanità
https://www.readbyqxmd.com/read/28358861/pcr-diagnosis-of-tick-borne-pathogens-in-maharashtra-state-india-indicates-fitness-cost-associated-with-carrier-infections-is-greater-for-crossbreed-than-native-cattle-breeds
#17
Sunil W Kolte, Stephen D Larcombe, Suresh G Jadhao, Swapnil P Magar, Ganesh Warthi, Nitin V Kurkure, Elizabeth J Glass, Brian R Shiels
Tick-borne pathogens (TBP) are responsible for significant economic losses to cattle production, globally. This is particularly true in countries like India where TBP constrain rearing of high yielding Bos taurus, as they show susceptibility to acute tick borne disease (TBD), most notably tropical theileriosis caused by Theileria annulata. This has led to a programme of cross breeding Bos taurus (Holstein-Friesian or Jersey) with native Bos indicus (numerous) breeds to generate cattle that are more resistant to disease...
2017: PloS One
https://www.readbyqxmd.com/read/28028631/molecular-detection-and-genetic-diversity-of-bovine-babesia-spp-theileria-orientalis-and-anaplasma-marginale-in-beef-cattle-in-thailand
#18
Charoonluk Jirapattharasate, Paul Franck Adjou Moumouni, Shinuo Cao, Aiko Iguchi, Mingming Liu, Guanbo Wang, Mo Zhou, Patrick Vudriko, Artemis Efstratiou, Tanasak Changbunjong, Sivapong Sungpradit, Parntep Ratanakorn, Walasinee Moonarmart, Poonyapat Sedwisai, Thekhawet Weluwanarak, Witsanu Wongsawang, Hiroshi Suzuki, Xuenan Xuan
Babesia spp., Theileria orientalis, and Anaplasma marginale are significant tick-borne pathogens that affect the health and productivity of cattle in tropical and subtropical areas. In this study, we used PCR to detect the presence of Babesia bovis, Babesia bigemina, and T. orientalis in 279 beef cattle from Western Thailand and A. marginale in 608 beef cattle from the north, northeastern, and western regions. The PCRs were performed using species-specific primers based on the B. bovis spherical body protein 2 (BboSBP2), B...
February 2017: Parasitology Research
https://www.readbyqxmd.com/read/27942962/evaluating-an-indirect-rmpsp-enzyme-linked-immunosorbent-assay-for-the-detection-of-bovine-theileria-infection-in-china
#19
Shuaiyang Zhao, Junlong Liu, Hongxi Zhao, Youquan Li, Junren Xie, Aihong Liu, Muhammad-Adeel Hassan, Hong Yin, Guiquan Guan, Jianxun Luo
Bovine theileriosis, a tick-borne protozoan disease caused by Theileria annulata, Theileria orientalis and Theileria sinensis, is widespread in China and is a serious economic problem for the Chinese livestock industry. In this study, recombinant major piroplasma surface proteins (MPSP) of T. annulata, T. orientalis and T. sinensis based on MPSP genes were expressed in Escherichia coli BL21(DE3). The immunogenicity and specificity of the three purified recombinant MPSP proteins were evaluated with the reference positive sera of T...
February 2017: Parasitology Research
https://www.readbyqxmd.com/read/27938442/an-outbreak-of-oriental-theileriosis-in-dairy-cattle-imported-to-vietnam-from-australia
#20
Hagos Gebrekidan, Linda Nelson, Greg Smith, Robin B Gasser, Abdul Jabbar
This study reports an outbreak of oriental theileriosis in dairy cattle imported to Vietnam from Australia. Following clinical and pathological diagnoses, a total of 112 cattle blood samples were divided into three groups and tested using multiplexed tandem PCR. Group 1 were from aborted heifers in Vietnam; group 2 were from cattle before shipment from group 1 cattle and group 3 were from the same batch of cattle but transported to Taiwan. Theileria orientalis DNA was detected in 72·3% cattle. The prevalences of T...
May 2017: Parasitology
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