The asexually proliferating stages of apicomplexan parasites cause acute symptoms of diseases such as malaria, cryptosporidiosis and toxoplasmosis. These stages are characterized by the presence of two independent microtubule organizing centers (MTOCs). Centrioles are found at the poles of the intranuclear spindle. The apical polar ring (APR), a MTOC unique to apicomplexans, organizes subpellic...

Neospora caninum has emerged as a major cause of abortion in cattle in many countries. This paper reviews recent advances in the life cycle and biology of Neospora with the emphasis on bovine neosporosis. The role of the recently discovered oocyst stage of N. caninum in the epidemiology of neosporosis is discussed. Progress made in serologic diagnosis of N. caninum infection is discussed. There...

Neighborhood dogs may act as reservoirs for several zoonotic protozoan infections, particularly in urban areas, thus constituting a potential public health threat. Accordingly, the aim of the present study was to evaluate the exposure of neighborhood dogs to four protozoan pathogens in public areas with high levels of human movement in Curitiba, southern Brazil. Blood samples from 26 neighborho...

Neospora is a newly recognized Toxoplasma-like cyst-forming coccidian parasite that causes abortion or congenital infections in naturally or experimentally infected animals. In this study, pregnant rhesus macaques were inoculated with culture-derived tachyzoites of a bovine Neospora isolate, and tissue samples from various major organs were collected from dams and fetuses for the detection of p...

neospora caninum is an intracellular parasite which causes abortion in cattle worldwide. The aim of this study was to determine the seroprevalence of neospora caninum in cattle in the province of Kerman in South East Iran. Blood samples were collected from 285 cattle in the province of Kerman for determining the seroprevalence of neospora caninum. A total of 285 serum samples were tested for an...

Aim: The aim of the present study was to determine the seroprevalence of Neospora infection in horses and donkeys in Hamedan province, Western Iran. Materials and Methods: In cross-sectional study, Blood samples (n=220) were collected from 120 horses and 100 donkeys in 2012 year. All sera were screened for Neospora using Neospora modified direct agglutination test (N-MAT). Results: Antibodies t...

Recombinant Neospora caninum tachyzoite antigens were evaluated in an enzyme-linked immunosorbent assay (ELISA) for recognition by serum antibodies (Ab) from Neospora-infected cattle. Serum samples were obtained every 2 to 3 weeks for 8 to 15 months from 10 cows with histories of Neospora-associated abortion. Serum samples were also obtained from offspring of these animals and from a large numb...

ABSTRACT: The brown howler monkey (Alouatta guariba clamitans) is a primate species widely distributed in South America. Infections by protozoa are common primates. However, studies on primates Brazil scarce, so the goal of this study was to investigate DNA from apicomplexan Neospora caninum, Sarcocystis spp. and Toxoplasma gondii tissues A. clamitans. extraction performed tissue samples heart,...