Equine piroplasmosis is a tropical parasitic disease caused by several intraerythrocytic members of the genera Babesia and Theileria. These pathogens are transmitted multiple tick species considered as important exotic microorganisms in countries. causes significant economic losses due to abortions, decreased activity even death equines, making surveillance these infectious essential. In northe...

BACKGROUND Piroplasms are kinds of tick-borne parasitic apicomplexan protozoa, which are detrimental to humans and animals in tropical and subtropical areas around the world. Up until now, there has been a limited amount of reliable information available about the prevalence of piroplasms infections in wild animals in China. Therefore, we have investigated the infections of Babesia and Theileri...

Mitochondrial (mt) genomes from diverse phylogenetic groups vary considerably in size, structure, and organization. The genus Plasmodium, causative agent of malaria, of the phylum Apicomplexa, has the smallest mt genome in the form of a circular and/or tandemly repeated linear element of 6 kb, encoding only three protein genes (cox1, cox3, and cob). The closely related genera Babesia and Theile...

The study was conducted to assess the prevalence of Theileria infection in Hyalomma tick vectors collected from cattle host to record the natural infection level of theilerial parasite in the field condition. A total of 174 male and 298 female of Hyalomma marginatum issaci ticks were collected from three districts Sunsari, Morang and Jhapa of Eastern Terai of Nepal during 2004-2005. These Hyalo...

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...

bovine tropical theileriosis caused by theileria annulata is an economically important disease of cattle. an enzyme linked immunosorbent assay (elisa) was used to determine antibody levels in vaccinated and unvaccinated cattle, us¬ing cellular schizont as antigen and its results were compared with immunofluo-rescent assay (ifa). for this test 126 sera collected (105 vaccinated, 31 not vacci¬nat...

A case of bovine cerebral theileriosis was confirmed at autopsy on a farm where 4 animals out of 70 died. All were less than 2 years old and all showed nervous signs. Serologically, no evidence was found of Theileria mutans or the Theileria parva group in young animals born on the farm. Six out of 13 calves 6-9 months of age were, however, serologically positive for Theileria? taurotragi and it...

Theileria annulata and T. parva are closely related protozoan parasites that cause lymphoproliferative diseases of cattle. We sequenced the genome of T. annulata and compared it with that of T. parva to understand the mechanisms underlying transformation and tropism. Despite high conservation of gene sequences and synteny, the analysis reveals unequally expanded gene families and species-specif...

Theileria is an apicomplexan parasite whose presence within the cytoplasm of a leukocyte induces cellular transformation and causes uncontrolled proliferation and clonal expansion of the infected cell. The intracellular schizont utilizes the host cell's own mitotic machinery to ensure its distribution to both daughter cells by associating closely with microtubules (MTs) and incorporating itself...

neospora caninum is a coccidian protozoan parasite which is a major cause of bovine abortions and neonatal mortality in cattle, sheep, goat and horse. occasionally, cultured cells are used for isolation and multiplication of the agent in vitro with several purposes. in this study the tachyzoite yields of n. caninum were compared in various cell cultures as the host cell lines. among the cell cu...