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- Document 0655
- DOCN M9620655
- TI Value of specific immunoglobulin A detection by two immunocapture assays
- in the diagnosis of toxoplasmosis.
- DT 9602
- AU Foudrinier F; Marx-Chemla C; Aubert D; Bonhomme A; Pinon JM; Laboratoire
- de Parasitologie-Mycologie, Institut National de la; Sante et de la
- Recherche Medicale U314, Centre Hospitalier; Universitaire, Hopital
- Maison Blanche, Reims, France.
- SO Eur J Clin Microbiol Infect Dis. 1995 Jul;14(7):585-90. Unique
- Identifier : AIDSLINE MED/96047083
- AB The diagnosis of Toxoplasma gondii infection is currently based on
- immunological tests, but tests for IgG and IgM antibodies alone are
- often insufficient to assess the risk of active disease, especially
- during pregnancy and in immunodeficient subjects. The supplementary
- diagnostic value of testing for antitoxoplasmic IgA in cases of acute,
- chronic, congenital and reactivated toxoplasmosis, relative to classical
- immunological tests, was evaluated using two immunocapture tests, one
- based on tachyzoite agglutination and the other on an immunoenzymatic
- complex recognizing the membrane protein P30 of Toxoplasma gondii. A
- total of 4,541 sera from 395 uninfected subjects, 468 immunized subjects
- with chronic infection, 117 subjects with acute infection and 403
- children, 103 of whom had congenital toxoplasmosis, was tested. Specific
- IgA tests were negative in the nonimmune population, but tests for this
- immunoglobulin subtype became positive very rapidly during primary
- infection, and IgA disappeared more rapidly than IgM. In the children
- infected in utero, specific IgA was detected more frequently than IgM.
- In contrast, in a population of HIV-seropositive subjects with clinical
- toxoplasmosis, tests for IgA were poorly sensitive. The two tests for
- specific IgA produced similar results, except in the early stages of
- primary infection, in which immunoenzymatic testing for anti-P30 IgA was
- less sensitive than the agglutination method.
- DE Agglutination Tests Animal Antibodies, Protozoan/*BLOOD Child Child,
- Preschool Female Human IgA/*BLOOD Immunoenzyme Techniques Infant
- Infant, Newborn Mice Pregnancy Support, Non-U.S. Gov't
- Toxoplasma/*IMMUNOLOGY Toxoplasmosis/*DIAGNOSIS JOURNAL ARTICLE
-
- SOURCE: National Library of Medicine. NOTICE: This material may be
- protected by Copyright Law (Title 17, U.S.Code).
-
-