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Veterinary Parasitology

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https://www.readbyqxmd.com/read/28413078/evaluation-of-immunochromatographic-test-ict-strips-for-the-serological-detection-of-babesia-bovis-and-babesia-bigemina-infection-in-cattle-from-western-java-indonesia
#1
Azirwan Guswanto, Puttik Allamanda, Euis Siti Mariamah, Tserendorf Munkjargal, Bumduuren Tuvshintulga, Hitoshi Takemae, Thillaiampalam Sivakumar, Mahmoud AbouLaila, Mohamad Alaa Terkawi, Madoka Ichikawa-Seki, Yoshifumi Nishikawa, Naoaki Yokoyama, Ikuo Igarashi
Three types of immunochromatographic test (ICT) strips were prepared for the detection of an antibody response against spherical body protein 4 (SBP-4) of Babesia bovis (bovICT), C-terminal-truncated rhoptry-associated protein 1 (rRAP1/CT17) of B. bigemina (bigICT), and the combination of both proteins (dual-ICT). The evaluation of their performance was conducted using a confirmed positive and negative serum panel for B. bovis and B. bigemina. Together with ELISA, the ICT strips were applied to determine the seroprevalence of bovine babesiosis in Western Java, Indonesia...
April 10, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28410950/detection-of-anaplasma-spp-and-ehrlichia-spp-anibodies-and-dirofilaria-immitis-antigens-in-dogs-from-seven-locations-of-morocco
#2
Sarah Elhamiani Khatat, Khalid Khallaayoune, Nabil Errafyk, Frans Van Gool, Luc Duchateau, Sylvie Daminet, Malika Kachani, Hamid El Amri, Rahma Azrib, Hamid Sahibi
In Morocco no data has been published on canine exposure to Anaplasma spp., Borrrelia burgdorferi, and Ehrlichia spp., and only one report is available on the occurrence of Dirofilaria immitis in dogs. Therefore, the aim of this study was to collect current data on the canine exposure to these vector-borne pathogens (VBPs) in Morocco. A total of 217 urban (n=57), rural (n=110) and military (n=50) dogs from seven Moroccan locations were screened for Anaplasma spp., B. burgdorferi and Ehrlichia spp. antibodies and for D...
April 4, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28408215/prevalence-genetic-diversity-and-potential-clinical-impact-of-blood-borne-and-enteric-protozoan-parasites-in-native-mammals-from-northern-australia
#3
Amanda Barbosa, Andrea Reiss, Bethany Jackson, Kristin Warren, Andrea Paparini, Graeme Gillespie, Danielle Stokeld, Peter Irwin, Una Ryan
A molecular survey was conducted to provide baseline information on the prevalence, genetic diversity and potential clinical impacts of blood-borne and enteric protozoans in native wild mammals from the Northern Territory (NT). A total of 209 blood and 167 faecal samples were collected from four target species; the northern brown bandicoot (Isoodon macrourus), common brushtail possum (Trichosurus vulpecula), northern quoll (Dasyurus hallucatus) and brush-tailed rabbit-rat (Conilurus penicillatus). Blood samples were screened by PCR at the 18S rRNA gene for trypanosomes, piroplasms and haemogregarines, with faecal samples tested for Cryptosporidium spp...
April 4, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28408214/prevalence-and-genotypic-characterization-of-bovine-echinococcus-granulosus-isolates-by-using-cytochrome-oxidase-1-co1-gene-in-hyderabad-pakistan
#4
Muhammad Ehsan, Nasreen Akhter, Bachal Bhutto, Abdullah Arijo, Javaid Ali Gadahi
Cystic echinococcosis is an important zoonotic disease; it has serious impacts on animals as well as human health throughout the world. Genotypic characterization of Echinocossus granulosus (E. granulosus) in buffaloes has not been addressed in Pakistan. Therefore, the present study was conducted to evaluate the incidence and genotypic characterization of bovine E. granulosus. Out of 832 buffaloes examined, 112 (13.46%) were found infected. The favorable site for hydatid cyst development was liver (8.65%) followed by lungs (4...
April 4, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28413077/trichomonosis-outbreak-in-a-flock-of-canaries-serinus-canaria-f-domestica-caused-by-a-finch-epidemic-strain-of-trichomonas-gallinae
#5
Marko Zadravec, Brigita Slavec, Uroš Krapež, Mitja Gombač, Tanja Švara, Mateja Poljšak-Prijatelj, Igor Gruntar, Joško Račnik
In the present paper, an outbreak of trichomonosis in a flock of 15 breeding pairs of canaries is described. Trichomonosis was diagnosed on characteristic clinical signs, microscopic examination of crop/esophageal swabs, gross pathology and histopathology. Trichomonads were successfully grown in culture media and were characterized by multi-locus sequence typing. The three genomic loci ITS1-5.8S-ITS2, 18S rRNA and Fe-hydrogenase were analyzed. Molecular characterization confirmed the finch trichomonosis strain, identical to the strain that caused emerging disease in free-living passerine birds in Europe...
April 3, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28404209/investigation-of-toxoplasma-gondii-in-semen-testicle-and-epididymis-tissues-of-primo-infected-cats-felis-catus
#6
Weslen Fabricio Pires Teixeira, Maria Eduarda Gonçalves Tozato, Julia Cestari Pierucci, Giovana Pavão Vital, André Cayeiro Cruz, Welber Daniel Zanetti Lopes, Marina Suzuki Cursino, Samea Fernandes Joaquim, Vando Edésio Soares, Helio Langoni, Kátia Denise Saraiva Bresciani, Alvimar José da Costa
This study aimed to investigate the presence of Toxoplasma gondii in semen, testicle and epididymis tissues of cats experimentally infected by this coccidium. A total of 12 male felines without a definite breed that were of reproductive age and serologically negative for T. gondii were selected and distributed to the following three experimental groups: GI, inoculated with 600 tissue cysts of the P strain of T. gondii (isolate III); GII, inoculated with 2×10(5) tachyzoites of the RH strain (isolate I); and GIII, not inoculated (control group)...
April 3, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28408213/efficacy-of-afoxolaner-plus-milbemycin-oxime-chewable-tablets-nexgard-spectra-%C3%A2-merial-against-adult-ancylostoma-ceylanicum-hookworm-in-dogs
#7
E Tielemans, W Lebon, P Dumont, P Taweethavonsawat, D Larsen, S Rehbein
A fixed-combination chewable tablet incorporating afoxolaner plus milbemycin oxime (NexGard Spectra(®), Merial) was tested in purpose-bred Beagle dogs for efficacy against adult Ancylostoma ceylanicum hookworms. Sixteen dogs were inoculated each by oral administration of approximately 500 infective larvae of A. ceylanicum. Seventeen days after inoculation, the dogs were weighed and allocated randomly to be treated with afoxolaner plus milbemycin oxime chewable tablets or to remain untreated. Commercial chewable tablets of different strength were combined to deliver doses as close as possible to the minimum effective dose of 2...
April 1, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28433409/managing-anthelmintic-resistance-in-parascaris-spp-a-modelling-exercise
#8
Dave M Leathwick, Christian W Sauermann, Thomas Geurden, Martin K Nielsen
A previously described model for the dynamics of the parasitic stages of Parascaris spp. was modified to include eggs outside the host and the genetics of anthelmintic resistance before being used to address questions regarding the development of resistance. Three broad questions were addressed; i) How sustainable is the current common practice of treating foals monthly for their first year of life (i.e. 12 treatments/year)? ii) Does the timing of treatments have an effect on resistance development? (i.e. do certain treatments select for resistance more strongly than others?), and iii) How sustainable is the currently recommended strategy of targeting ascarid infections in foals with two treatments applied during the first five months of life? A range of variations within these broad questions were considered, such as the value in rotational deworming, whether larvicidal treatments are more selective for resistance, and whether combination anthelmintics should be introduced...
March 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28385540/performance-of-leishmania-braziliensis-enolase-protein-for-the-serodiagnosis-of-canine-and-human-visceral-leishmaniosis
#9
Mariana Costa Duarte, Daniela Pagliara Lage, Vívian Tamietti Martins, Lourena Emanuele Costa, Beatriz Cristina Silveira Salles, Ana Maria Ravena Severino Carvalho, Thaís Teodoro de Oliveira Santos, Daniel Silva Dias, Patrícia Aparecida Fernandes Ribeiro, Miguel Angel Chávez-Fumagalli, Ricardo Andrez Machado-de-Ávila, Bruno Mendes Roatt, Daniel Menezes-Souza, Danielle Ferreira de Magalhães-Soares, Eduardo Antonio Ferraz Coelho
In the present study, Leishmania braziliensis enolase was cloned and the recombinant protein (rEnolase) was evaluated for the serodiagnosis of canine and human visceral leishmaniosis (VL). For the canine VL diagnosis, this study examined serum samples of Leishmania infantum-infected dogs, from non-infected animals living in endemic or non-endemic areas of leishmaniosis, as well as those from Leish-Tec(®)-vaccinated dogs and Trypanosoma cruzi or Ehrlichia canis experimentally infected animals. For the human VL diagnosis, this study analyzed serum samples from VL patients, from non-infected subjects living in endemic or non-endemic areas of leishmaniosis, as well as those from T...
March 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28408216/modelling-the-impacts-of-pasture-contamination-and-stocking-rate-for-the-development-of-targeted-selective-treatment-strategies-for-ostertagia-ostertagi-infection-in-calves
#10
Zoe Berk, Yan C S M Laurenson, Andrew B Forbes, Ilias Kyriazakis
A simulation study was carried out to assess whether variation in pasture contamination or stocking rate impact upon the optimal design of targeted selective treatment (TST) strategies. Two methods of TST implementation were considered: 1) treatment of a fixed percentage of a herd according to a given phenotypic trait, or 2) treatment of individuals that exceeded a threshold value for a given phenotypic trait. Four phenotypic traits, on which to base treatment were considered: 1) average daily bodyweight gain, 2) faecal egg count, 3) plasma pepsinogen, or 4) random selection...
March 28, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28433410/echinococcus-oligarthrus-in-the-subtropical-region-of-argentina-first-integration-of-morphological-and-molecular-analyses-determines-two-distinct-populations
#11
Juan Pablo Arrabal, Hector Gabriel Avila, Maria Romina Rivero, Federico Camicia, Martin Miguel Salas, Sebastián A Costa, Carlos G Nocera, Mara C Rosenzvit, Laura Kamenetzky
Echinococcosis is a parasitic zoonosis that is considered as a neglected disease by the World Health Organization. The species Echinococcus oligarthrus is one of the causative agents of Neotropical echinococcosis, which is a poorly understood disease that requires a complex medical examination, may threaten human life, and is frequently associated with a low socioeconomic status. Morphological and genetic diversity in E. oligarthrus remains unknown. The aim of this work is to identify and characterize E. oligarthrus infections in sylvatic animals from the Upper Paraná Atlantic Forest in the province of Misiones, Argentina, by following an integrative approach that links morphological, genetic and ecological aspects...
March 27, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28385541/plant-products-and-secondary-metabolites-with-acaricide-activity-against-ticks
#12
REVIEW
J A Rosado-Aguilar, K Arjona-Cambranes, J F J Torres-Acosta, R I Rodríguez-Vivas, M E Bolio-González, A Ortega-Pacheco, A Alzina-López, E J Gutiérrez-Ruiz, E Gutiérrez-Blanco, A J Aguilar-Caballero
The present review documents the results of studies evaluating the acaricidal activity of different plant products and secondary metabolites against ticks that are resistant and susceptible to conventional acaricides. Studies published from 1998 to 2016 were included. The acaricidal activity of plant extracts, essential oils and secondary compounds from plants have been evaluated using bioassays with ticks in the larval and adult stages. There is variable effectiveness according to the species of plant and the concentrations used, with observed mortalities ranging from 5 to 100% against the Rhipicephalus (Boophilus), Amblyomma, Dermacentor, Hyalomma, and Argas genera...
March 27, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28385538/the-prevalence-and-development-of-digenean-parasites-within-their-intermediate-snail-host-galba-truncatula-in-a-geographic-area-where-the-presence-of-calicophoron-daubneyi-has-recently-been-confirmed
#13
Rhys Aled Jones, Hefin Wyn Williams, Sarah Dalesman, Sinmidele Ayodeji, Rowan K Thomas, Peter M Brophy
During the past decade, rumen fluke (Calicophoron daubneyi) has established as a prominent parasite of livestock within numerous European countries. Its development and spread is enabled by the presence of its intermediate snail host G. truncatula. However, the dynamics of this stage of the C. daubneyi lifecycle is yet to be recorded in numerous northern European countries including the UK. Here, the prevalence of C. daubneyi along with F. hepatica, H. cylindracea and other parasites infecting G. truncatula snails on 10 Welsh farms was recorded using morphological and PCR techniques...
March 27, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28377149/evaluation-of-an-association-of-alpha-cypermethrin-and-flufenoxuron-for-tick-control-in-an-area-at-risk-of-brazilian-spotted-fever
#14
José Brites-Neto, Jardel Brasil, Jeferson de Andrade, Gabriele Luciana Saqui
Brazilian spotted fever (BSF) is an endemic anthropozoonosis caused by Gram-negative bacteria (Rickettsia rickettsii) that is associated with the risk of human infection by ticks. In the city of Americana, São Paulo (SP), Brazil, there were 12 cases (67% lethal) between 2004 and 2015. This study evaluated the effectiveness of control over tick infestations in an area at risk of BSF, in a field trial on an association of alpha-cypermethrin (3%) and flufenoxuron (3%) (Tenopa(®)) conducted in Americana. The infestation levels of the target species (Amblyomma sculptum and Amblyomma dubitatum) in the field trial were evaluated through acarological surveys (CO2 traps) on days 0, 22, 43 and 62 after treatment, both in the treatment area and in a control area...
March 27, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28392045/low-prevalence-of-zoonotic-babesia-in-small-mammals-and-ixodes-ricinus-in-brittany-france
#15
M Jouglin, G Perez, A Butet, L Malandrin, S Bastian
In order to evaluate the zoonotic risk due to Babesia spp., especially B. microti, we investigated their presence in 597 individuals of five small mammal species and in 2620 questing nymphs of Ixodes ricinus in rural landscapes of Western France (Brittany). Small mammals (rodents and shrews) are indeed suspected to be reservoir hosts for B. microti, and the tick I. ricinus is the vector of the three main zoonotic species in Europe, i.e. B. divergens, B. venatorum and B. microti. Only one bank vole carried B...
March 25, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28385539/th1-th2-balance-in-the-liver-and-hepatic-lymph-nodes-of-vaccinated-and-unvaccinated-sheep-during-acute-stages-of-infection-with-fasciola-hepatica
#16
I L Pacheco, N Abril, N Morales-Prieto, M J Bautista, R Zafra, A Escamilla, M T Ruiz, A Martínez-Moreno, J Pérez
The expression of IFNγ and IL4 was quantified using q-PCR in the liver and hepatic lymph nodes (HLN) of sheep during early stages of infection with Fasciola hepatica (1, 3, 9 and 18days post-infection, dpi). A group of animals (Group 1) were vaccinated with Fasciola hepatica recombinant cathepsin L1 (FhCL1) in montanide 70 VG prior to infection, a second group (group 2) was used as infected control and a third (group 3) was used as uninfected control. To study vaccine efficacy three additional groups were sacrificed 19 weeks post-infection (group 4 immunized with CL1, group 5 with the adjuvant and group 6 was used as infected control)...
March 25, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28449954/the-immunomodulatory-protein-rh36-is-relating-to-blood-feeding-success-and-oviposition-in-hard-ticks
#17
Fangfang Wang, Xiaojuan Lu, Fengxun Guo, Haiyan Gong, Houshuang Zhang, Yongzhi Zhou, Jie Cao, Jinlin Zhou
An immunomodulatory protein designated RH36 was identified in the tick Rhipicephalus haemaphysaloides. The cDNA sequence of RH36 has 844bp and encodes a deduced protein with a predicted molecular weight of 24kDa. Bioinformatics analysis indicated that RH36 presented a degree of similarity of 34.36% with the immunomodulatory protein p36 from the tick Dermacentor andersoni. The recombinant RH36 (rRH36) expressed in Sf9 insect cells suppressed the T-lymphocyte mitogen-driven in vitro proliferation of splenocytes and the expression of several cytokines such as IL-2, IL-12, and TNF-α...
March 23, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28372843/sarcocystis-neurona-manipulation-using-culture-derived-merozoites-for-bradyzoite-and-sporocyst-production
#18
Sarah B Chaney, Antoinette E Marsh, Stephanie Lewis, Michelle Carman, Daniel K Howe, William J Saville, Stephen M Reed
Equine protozoal myeloencephalitis (EPM) remains a significant central nervous system disease of horses in the American continents. Sarcocystis neurona is considered the primary causative agent and its intermediate life stages are carried by a wide host-range including raccoons (Procyon lotor) in North America. S. neurona sarcocysts mature in raccoon skeletal muscle and can produce central nervous system disease in raccoons, mirroring the clinical presentation in horses. The study aimed to develop laboratory tools whereby the life cycle and various life stages of S...
March 18, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28342672/an-in-vitro-larval-migration-assay-for-assessing-anthelmintic-activity-of-different-drug-classes-against-ascaris-suum
#19
Jianguo Zhao, Andrew R Williams, Tina Vicky Alstrup Hansen, Stig M Thamsborg, Jianping Cai, Shuaibao Song, Gang Chen, Ming Kang, Zhuangzhi Zhang, Qun Liu, Qian Han
In vitro methods have been developed for the detection of anthelmintic resistance in a range of nematode species. However, the life cycle of Ascaris suum renders the commonly used egg hatch assay and larval development assay unusable. In this study we developed a combined multi-well culture and agar gel larval migration assay to test the effect of benzimidazole and tetrahydropyrimidin/imidazothiazole anthelmintics against nine isolates of A. suum collected from locations in China and Denmark. Drugs tested were thiabendazole, fenbendazole, mebendazole, levamisole, and pyrantel...
March 18, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28342671/apoptosis-of-peritoneal-leucocytes-during-early-stages-of-fasciola-hepatica-infections-in-sheep
#20
A Escamilla, R Pérez-Caballero, R Zafra, M J Bautista, I L Pacheco, M T Ruiz, M S Martínez-Cruz, A Martínez-Moreno, V Molina-Hernández, J Pérez
Several immunomodulatory properties have been described in Fasciola hepatica infections. Apoptosis has been shown to be an effective mechanism to avoid the immune response in helminth infections. The aim of the present work was to study apoptosis in peritoneal leucocytes of sheep experimentally infected with F. hepatica during the early stages of infection. Five groups (n=5) of sheep were used. Groups 2-5 were orally infected with 200 metacercariae (mc) and sacrificed at 1, 3, 9 and 18days post-infection (dpi), respectively...
March 18, 2017: Veterinary Parasitology
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