The complement-mediated prozone effect in the Luminex single-antigen bead assay and its impact on HLA antibody determination in patient sera.
Int J Immunogenet
; 40(3): 171-7, 2013 Jun.
Article
em En
| MEDLINE
| ID: mdl-22913810
ABSTRACT
The Luminex xMAP system has become an important tool for HLA antibody screening and identification in sera of transplant patients. Recently, the Luminex single antigen bead assay was shown to be prone to an artefact, the so called prozone phenomenon Sera with high titer HLA antibodies gave negative results when tested neat, but reacted strongly positive after 110 dilution. We also observed such a phenomenon and found that it was most likely caused by the complement component 1 (C1) by competitively displacing the detection antibodies. In this article we review the complement-mediated prozone effect and other mechanisms of interference with solid phase assays, and we discuss possible consequences for HLA antibody testing with the Luminex SAB assay.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas do Sistema Complemento
/
Teste de Histocompatibilidade
/
Antígenos HLA
/
Anticorpos
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Int J Immunogenet
Assunto da revista:
ALERGIA E IMUNOLOGIA
/
GENETICA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Alemanha