CHEMILUMINESCENT IMMUNOASSAYS - DISCRIMINATION BETWEEN the REACTIVITIES of NATURAL and HUMAN PATIENT ANTIBODIES WITH ANTIGENS FROM EUKARYOTIC PATHOGENS, TRYPANOSOMA-CRUZI and PARACOCCIDIOIDES-BRASILIENSIS

CHEMILUMINESCENT IMMUNOASSAYS - DISCRIMINATION BETWEEN the REACTIVITIES of NATURAL and HUMAN PATIENT ANTIBODIES WITH ANTIGENS FROM EUKARYOTIC PATHOGENS, TRYPANOSOMA-CRUZI and PARACOCCIDIOIDES-BRASILIENSIS

Autor Almeida, I. C. Google Scholar
Rodrigues, E. G. Google Scholar
Travassos, L. R. Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo Quantitative chemiluminescent enzyme-linked immunosorbent assay (ELISA) and dot-blotting procedures were developed to evaluate the reactivity of human antibodies with crude antigens and purified molecules of parasites and fungi, mainly Trypanosoma cruzi and Paracoccidioides brasiliensis. Reproducible, highly sensitive, and strictly dose-responding results were obtained, with the specificity depending on the kind of antigen used. Mixed antigens (epimastigote membrane and HIV-I heptapeptide) applied in dots could be independently recognized by specific sera. Purified antigens (T. cruzi F2/3 and P. brasiliensis gp43) at very small concentrations gave specific reactions with patients' sera diluted greater than or equal to 1:1,000 and were very poorly reactive or unreactive with natural antibodies using the chemiluminescent immunoassays. P. brasiliensis crude antigen Fava Netto polysaccharide antigen (FNPA) contained peptide epitopes recognized by natural antibodies and carbohydrate epitopes reactive with sera from histoplasmosis patients. It is very important that sensitive chemiluminescence immunoassays be used with purified antigenic molecules to ensure specificity for the diagnosis and follow-up of parasitic and fungal infections. (C) 1994 Wiley-Liss, Inc.
Palavra-chave CHEMILUMINESCENT ELISA
CHEMILUMINESCENT DOT-BLOTTING
AMERICAN TRYPANOSOMIASIS
PARACOCCIDIOIDOMYCOSIS
MUCIN-LIKE GLYCOCONJUGATES
EPIMASTIGOTE MEMBRANE
POLYSACCHARIDE ANTIGEN
43-KDA GLYCOPROTEIN
Idioma Inglês
Data de publicação 1994-01-01
Publicado em Journal of Clinical Laboratory Analysis. New York: Wiley-liss, v. 8, n. 6, p. 424-431, 1994.
ISSN 0887-8013 (Sherpa/Romeo, fator de impacto)
Publicador Wiley-Blackwell
Extensão 424-431
Fonte http://dx.doi.org/10.1002/jcla.1860080614
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:A1994QF65200013
Endereço permanente http://repositorio.unifesp.br/handle/11600/25372

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