ANTIBODIES TO SCHISTOSOMA MANSONI IN HUMAN CEREBROSPINAL FLUID

ISIS F. MAGALHÃES-SANTOS Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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DENISE C. LEMAIRE Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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ANTONIO S. ANDRADE-FILHO Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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ARISTIDES C. QUEIROZ Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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OTÁVIO M. CARVALHO Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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THEOMIRA M. A. CARMO Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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ISADORA C. SIQUEIRA Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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DÉBORA M. ANDRADE Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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MICHELY F. REGO Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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ANA PAULA T. GUEDES Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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MITERMAYER G. REIS Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Oswaldo Cruz Foundation, Salvador, Bahia Brazil; Federal University of Bahia, Salvador, Bahia, Brazil; Escola Bahiana de Medicina e Saúde Pública, Salvador, Bahia Brazil; José Silveira Foundation, Salvador, Bahia Brazil

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Cerebrospinal fluid (CSF) and serum samples from patients suspected of having neuroschistosomiasis (NS) were evaluated by an enzyme-linked immunosorbent assay. Monoclonal antibodies of various immunoglobulin isotypes (IgM, IgA, IgE, total IgG, IgG1, IgG2, IgG3, and IgG4) were used to detect antibodies against Schistosoma mansoni soluble egg antigen (SEA) and soluble worm adult preparation (SWAP). Of the 83 CSF samples tested, 55% were reactive to SEA (26% were reactive only to SEA and 29% to both SEA and SWAP), 34% were reactive to SWAP (5% only to SWAP and 29% to both SEA and SWAP), and 40% were not reactive with any antigen. Cases that tested positive for SWAP in CSF and negative in serum were not found. Samples with high specific IgG antibody titers were selected for immunoglobulin isotype profiling. In the CSF samples, the antibodies against SEA and SWAP were mainly IgM, IgG1, and IgG4, although other immunoglobulins were also detected. Interestingly, nine patients had high levels of IgG1 only in the CSF. These results suggest that there is local synthesis of IgG1, and that this isotype could be an important immunologic marker in the diagnosis of NS.

Author Notes

Reprint requests: Mitermayer G. Reis, Centro de Pesquisas Gonçalo Moniz-FIOCRUZ, Rua Waldemar Falcão 121 Brotas, Salvador, Bahia, Brazil CEP-40295-001, Telephone: 55-71-356-0129, Fax: 55-71-356-2155, E-mail: miter@cpqgm.fiocruz.br
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