Diagnostic Microbiology & Infectious Disease
Volume 54, Issue 1 , Pages 45-49, January 2006

Intrathecal synthesis of specific immunoglobulin G antibodies in neurocysticercosis: evaluation of antibody concentrations by enzyme-linked immunosorbent assay using a whole cysticercal extract and cyst vesicular fluid as antigens

  • Gisele C. Arruda

      Affiliations

    • Department of Clinical Pathology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), P.O. Box 6111, Campinas 13083-970, São Paulo, Brazil
    • ,
  • Elizabeth M.A.B. Quagliato

      Affiliations

    • Department of Neurology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), P.O. Box 6111, Campinas 13083-970, São Paulo, Brazil
    • ,
  • Cláudio L. Rossi

      Affiliations

    • Department of Clinical Pathology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), P.O. Box 6111, Campinas 13083-970, São Paulo, Brazil
    • Corresponding Author InformationCorresponding author. Tel.: +55-19-3788-7064; fax: +55-19-3788-9434.

Received 12 April 2005; accepted 16 August 2005.

Abstract 

The demonstration of intrathecal antibody production has proven useful for showing the involvement of the central nervous system (CNS) in several diseases. In the present study, the intrathecal synthesis of cysticercus-specific immunoglobulin G (IgG) antibodies was investigated in 30 patients with neurocysticercosis based on calculation of the specific IgG antibody index (AIIgG). An AIIgG ≥1.5 was considered to be indicative of intrathecal antibody production. Antibody concentrations in serum and cerebrospinal fluid samples were evaluated using an enzyme-linked immunosorbent assay with 2 antigen preparations from Taenia solium cysticerci, namely, a whole cysticercal extract (TsoW) and the vesicular fluid of the parasite (TsoVF). Intrathecal, cysticercus-specific IgG antibody synthesis was observed in 21 (70%) and 23 (76.6%) patients using the TsoW and TsoVF antigens, respectively. The detection of the intrathecal synthesis of specific antibodies may be a potentially useful tool in establishing the involvement of CNS in cysticercosis.

Keywords: Neurocysticercosis, Intrathecal antibody production, Specific antibody index

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PII: S0732-8893(05)00200-2

doi:10.1016/j.diagmicrobio.2005.08.007

Diagnostic Microbiology & Infectious Disease
Volume 54, Issue 1 , Pages 45-49, January 2006

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