PMID- 12682160 OWN - NLM STAT- MEDLINE DCOM- 20030711 LR - 20210526 IS - 0095-1137 (Print) IS - 1098-660X (Electronic) IS - 0095-1137 (Linking) VI - 41 IP - 4 DP - 2003 Apr TI - Clinical value of specific immunoglobulin E detection by enzyme-linked immunosorbent assay in cases of acquired and congenital toxoplasmosis. PG - 1681-6 AB - The clinical value of immunoenzymatic (enzyme-linked immunosorbent assay) detection of anti-Toxoplasma immunoglobulin E (IgE) was assessed by studying 2,036 sera from 792 subjects, comprising seronegative controls and subjects with acute, active, reactivated, or congenital toxoplasmosis. Included were nonimmunized adults; pregnant women with recently acquired infection (acute toxoplasmosis); immunocompetent subjects with recently acquired severe infection (active toxoplasmosis) expressed as fever, adenopathies, splenomegaly, pneumonia, meningitis, or disseminated infection; subjects-some of them immunocompromised-whose previously moderate IgG antibody levels rose, suggesting a reactivation of quiescent toxoplasmosis; and infants born to seroconverted mothers and evaluated for diagnosis of congenital infection and therapeutic management. Specific IgE antibodies were never detected in seronegative subjects. They were present in 85.7% of asymptomatic seroconverters and in 100% of seroconverters with overt toxoplasmosis, following two different kinetics: in the former, the specific IgE titer generally presented a brief peak 2 to 3 months postinfection and then fell rapidly, whereas specific IgE persisted at a very high titer for several months in the latter. IgE emerged concomitantly with the increase in IgG during toxoplasmic reactivation. For neonatal diagnosis of congenital toxoplasmosis, IgE was less informative than IgM and IgA (sensitivities, 59.5, 64.3, and 76.2%, respectively) and had a specificity of 91.9%. Nevertheless, simultaneous measurement of the three isotypes at birth improved the diagnostic yield to 81% relative to the combination of IgA and IgM. Emergence of specific IgE during postnatal treatment for congenital toxoplasmosis is a sign of poor adherence or inadequate dosing. FAU - Foudrinier, F AU - Foudrinier F AD - Toxoplasmosis Group, Laboratory of Parasitology-Mycology, IFR53, EA 2070, Hopital Maison Blanche, 51092 Reims, France. ffoudrinier@chu-reims.fr FAU - Villena, I AU - Villena I FAU - Jaussaud, R AU - Jaussaud R FAU - Aubert, D AU - Aubert D FAU - Chemla, C AU - Chemla C FAU - Martinot, F AU - Martinot F FAU - Pinon, J M AU - Pinon JM LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Microbiol JT - Journal of clinical microbiology JID - 7505564 RN - 0 (Antibodies, Protozoan) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Acute Disease MH - Adult MH - Animals MH - Antibodies, Protozoan/blood MH - Child, Preschool MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Fetal Blood/immunology MH - Humans MH - Immunoglobulin E/*blood MH - Infant MH - Male MH - Pregnancy MH - Pregnancy Complications, Parasitic/*diagnosis/immunology MH - Toxoplasma/immunology MH - Toxoplasmosis/*diagnosis/immunology/parasitology MH - Toxoplasmosis, Congenital/*diagnosis/immunology/parasitology PMC - PMC153890 EDAT- 2003/04/12 05:00 MHDA- 2003/07/12 05:00 PMCR- 2003/04/01 CRDT- 2003/04/12 05:00 PHST- 2003/04/12 05:00 [pubmed] PHST- 2003/07/12 05:00 [medline] PHST- 2003/04/12 05:00 [entrez] PHST- 2003/04/01 00:00 [pmc-release] AID - 1191 [pii] AID - 10.1128/JCM.41.4.1681-1686.2003 [doi] PST - ppublish SO - J Clin Microbiol. 2003 Apr;41(4):1681-6. doi: 10.1128/JCM.41.4.1681-1686.2003.