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Enterocytozoon bieneusi is the most commonly identified Microsporidia in humans and has also been detected worldwide in a large group of wild living and domestic animals. The identification of E. bieneusi in wildlife has raised the question of the importance of animal reservoirs in the epidemiology of microsporidiosis and the implications of the infection with this pathogen in hosts. This review summarizes the available molecular data on the variety of E. bieneusi genotypes, both potentially zoonotic and host-specific isolated from wild living mammals and birds. In contrast to microsporidial infections of humans and domestic animals, wildlife deserves attention as a source of significant environmental reservoir of E. bieneusi.
Background. The aim of this study was isolation and examination of Aspiculuris tetraptera somatic proteins and somatic antigens role in eliciting of immune response in laboratory mice. Material and methods. In our investigation 40 laboratory mice (BALB/c strain) were used. To extract the somatic proteins Tris-HCl buffer with NaCl and Triton X-100 was used. The analysis of somatic antigens was undertaken by Western blotting. Results. The study showed the presence of 14 protein bands ranging from ~ 82 to 28 kDa. Glicoproteins detection revealed 13 bands in range between ~ 70 to 30 kDa. There was no reaction observed with immunoglobulins IgA. Comparision of these results with earlier studies concerning S. obvelata somatic antigens show that there are proteins and glicoproteins with the same molecular weights for both species. It is also observed that S. obvelata somatic extract is more diversed and have higher antigenicity than A. tetraptera. Hence, we may suppose this fact could favour easier colonization of the host by A. tetraptera.
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Helminth parasites of laboratory mice and rats

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Rodents, as mice and rats are the most common laboratory animals used in research and testing. They are seldom investigated for autochthonous ecto- and endoparasites prior their utilization in the experiments. Helminth parasites can alter the interpretation of final results. Pinworms commonly infecting laboratory rodents include mainly the mice pinworms Syphacia obvelata and Aspiculuris tetraptera, and in rats Syphacia muris. The fact that many laboratory rodent colonies were found to be parasite contaminated suggests a need for eradication and improvment of the quality of laboratory rodents. This review reports the data on the presence of helminth parasites in laboratory rodents colonies, and suggests to pay special attention on controlling the sanitary conditions of animal houses.
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