Abstract
Annexins are proteins with important roles in parasites, some of which are related to excretion-secretion processes, protein traffic, and microvesicle functionality. The participation of annexins in osmoregulation has been reported in tapeworms, including Taenia solium. This study aimed to investigate the localization and expression of annexin in cysticerci of Taenia crassiceps, used as a model of cysticercosis. We used an antibody made with a protein, previously employed on Schistosoma bovis, to detect annexin in T. crassiceps proteins extracts used Western blot assay. The histological distribution of annexin was studied with immunofluorescence and confocal microscopy. The antibody against annexin recognized a band at a molecular weight of 40.9kDa. The histological distribution of annexin showed that the protein is mainly localized in the tegument and the protonephridia ducts. In our study, annexin was detected at a molecular weight similar to that described for Schistosoma bovis. In addition, its principal localization entailed structures of the osmoregulatory system one of the most important by the survival of the parasites. This confirms and solidifies previous reports concerning the role of annexins in T. crassiceps and this will be interesting by the development of new compounds against this protein.
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