Abstract
Bovine cysticercosis is a zoonosis that affects humans in their adult form (taeniasis) and its larval is found inserted in the musculature of infected cattle (cysticerci). It is still not entirely clear how animal immune response against infection occurs, being the comprehension of this process necessary for the enhancement of diagnostic capacity and disease prevention. This work aimed to evaluate the evolution of the immune response in experimentally infected cattle, compared with findings in cell response by optical microscopy. Nine animals were infected at a rate of 120,000 eggs of Taenia saginata . Five of the animals were similar in the kinetics of antibody production against cysticerci, with maximal levels of IgG and IgM. The other four animals showed an immune response different from the majority, with two of them showing delayed response to infection by cysticerci while the others apparently did not have initial contact with antigens secreted by cysticerci. Regarding the cellular response, it was found that, in lesions of viable cysticerci, inflammatory cells predominated, whereas in nonviable cysticerci there were tissue repair cells in the most part, being possible to notice that the amount of migratory calcareous corpuscles are related to the death stage of the parasite. These findings are important for the understanding immune response of cattle infected with cysticercosis.
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