title: Cerebrospinal fluid immunoglobulins in neurosyphilis.
abstract: Using the fluorescent treponemal antibody-absorption (FTA-ABS) test and the solid phase haemadsorption assay (SPHA) Treponema pallidum-specific IgA was found in the cerebrospinal fluid (CSF) of patients with neurosyphilis but not in those with late latent syphilis. The presence of T pallidum-specific IgA in the CSF may inhibit the antitreponemal activity of IgG and thus play some part in the pathogenesis of neurosyphilis.
mesh_terms: D000368:Aged; D005260:Female; D005455:Fluorescent Antibody Technique; D006801:Humans; D007070:Immunoglobulin A / Q000134:cerebrospinal fluid*; D007074:Immunoglobulin G / Q000134:cerebrospinal fluid*; D008297:Male; D008875:Middle Aged; D009494:Neurosyphilis / Q000134:cerebrospinal fluid / Q000276:immunology*; D013592:Syphilis, Latent / Q000134:cerebrospinal fluid / Q000276:immunology; D014210:Treponema pallidum / Q000276:immunology*
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G