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  • Title: Feasibility of baculovirus-expressed recombinant 10-kDa antigen in the serodiagnosis of Taenia solium neurocysticercosis.
    Author: Lee EG, Lee MY, Chung JY, Je EY, Bae YA, Na BK, Kim TS, Eom KS, Cho SY, Kong Y.
    Journal: Trans R Soc Trop Med Hyg; 2005 Dec; 99(12):919-26. PubMed ID: 16143356.
    Abstract:
    Bacterially expressed recombinant 10-kDa protein of Taenia solium metacestode (TsM) was previously found to be reliable in the diagnosis of active stage neurocysticercosis (NCC) by immunoblotting but not by ELISA. In this study, we evaluated the diagnostic feasibility of detecting eukaryote-expressed recombinant 10-kDa protein of TsM by ELISA (rTsM10-ELISA) in the serum and cerebrospinal fluid (CSF) from NCC patients. In 45 cases of active NCC, 91.1 and 97.8% cases showed positive reactions for serum and CSF by rTsM10-ELISA. ELISA employing the crude cyst fluid antigen (CF-ELISA) also revealed a similar result. Negligible cross-reactions were observed in serum samples from control subjects and from subjects with other helminthic diseases by rTsM10-ELISA (5/139 cases, 3.6%). By contrast, CF-ELISA demonstrated a high degree of cross-reactivity (24/139, 17.3%) especially from those patients with alveolar and cystic echinococcoses. The overall sensitivity and specificity of rTsM10-ELISA were 94.3 and 96.4%; and those of CF-ELISA were 95.7 and 84.5%, for serum and CSF, respectively. Antibody responses to rTsM10 were detected as early as 3 months after experimental infection of T. solium eggs in pigs. Our results show that ELISA with rTsM10 could be highly applicable in the serodiagnosis of NCC from early stage of infection.
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