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  • Title: Excretory/secretory antigens (ES) from in-vitro cultures of Taenia crassiceps cysticerci, and use of an anti-ES monoclonal antibody for antigen detection in samples of cerebrospinal fluid from patients with neurocysticercosis.
    Author: Espíndola NM, Vaz AJ, Pardini AX, Fernandes I.
    Journal: Ann Trop Med Parasitol; 2002 Jun; 96(4):361-8. PubMed ID: 12171617.
    Abstract:
    Antigens were obtained from cysticerci of the ORF strain of Taenia crassiceps, by culture of cysts in protein-free hybridoma medium (PFHM). Budding of new vesicles was observed after 24-48 h. Excretory/secretory (ES) antigens (peptides of <20 kDa) were recovered in the medium after culture for 48 h. SDS-PAGE analysis of vesicular-fluid (VF) antigens (obtained by rupturing T. crassiceps cysticerci in PFHM) and the ES antigens indicated partial homology between the two preparations. ES peptides of 18- and 14-kDa were recognized by polyclonal antibodies produced in rabbits immunized either with the VF antigens or with a total-antigen preparation of T. solium cysticerci. Antibodies present in samples of serum or cerebrospinal fluid (CSF) from patients with neurocysticercosis also reacted with ES peptides. An anti-ES monoclonal antibody detected antigens in the CSF from 10 patients with neurocysticercosis, showing the antigenic homology of the ES antigens with those of T. solium cysticerci in human infections.
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