title: High levels of IgM antibodies specific for Toxoplasma gondii in pregnancy 12 years after primary toxoplasma infection. Case report.
abstract: A case of high levels of specific IgM antibodies registered by the immunosorbent agglutination assay (ISAgA) in a pregnant woman with a history of toxoplasmosis is reported. The patient had acute lymphoglandular toxoplasmosis diagnosed serologically by increases in the specific antibody titer detected by the Sabin-Feldman test (SFT) and pathohistologically 12 years before pregnancy. In pregnancy, she had stable titers of specific antibodies registered by the SFT, enzyme-linked immunosorbent assay (ELISA), indirect fluorescent antibody test (IFAT), indirect hemagglutination test (IHAT) and direct agglutination test. Specific IgM antibodies were detected by the ISAgA but not by the IgM-IFAT, IgM-ELISA and IgM-IHAT. She had a normal pregnancy and gave birth to a clinically healthy baby who had a negative ISAgA finding at 7 days of age. This case indicates that ISAgA is not necessarily a marker of recent infection and is therefore not reliable for the diagnosis of toxoplasmosis in pregnancy.
authors.affiliation: Toxoplasmosis Laboratory, Institute for Medical Research, Belgrade, Yugoslavia.
authors.forename: B
authors.initials: B
authors.lastname: Bobić
authors.forename: D
authors.initials: D
authors.lastname: Sibalić
authors.forename: O
authors.initials: O
authors.lastname: Djurković-Djaković
mesh_terms: D000328:Adult; D000818:Animals; D000913:Antibodies, Protozoan / Q000032:analysis*; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005455:Fluorescent Antibody Technique; D006386:Hemagglutination Tests; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000276:immunology / Q000469:parasitology*; D013997:Time Factors; D014122:Toxoplasma / Q000276:immunology*; D014123:Toxoplasmosis / Q000276:immunology*
chemical_list: D000913:Antibodies, Protozoan; D007075:Immunoglobulin M