Evaluation of different commercial ELISA methods for the serodiagnosis of systemic candidosis

Mycoses. 2002 Dec;45(11-12):455-60. doi: 10.1046/j.1439-0507.2002.00775.x.

Abstract

Different commercial enzyme-linked immunsorbent assays (ELISA) were evaluated in a preliminary study for diagnosis of systemic candidosis: Biomerica and Virotech GmbH, which allowed immunoglobulin G detection, and Platelia, which associated total antibody to antigen detection. They were tested with a home-made ELISA and compared with the routine techniques used in the hospital laboratory: indirect immunofluorescence and counter-immunoelectrophoresis. Sera were obtained from patients with probable or proven systemic candidosis (groups 3 and 4, n=8 and n=14, respectively) and from patients without systemic candidosis who were divided into controls (n=10), those hospitalized without Candida isolation (group 1, n=10) and those hospitalized with Candida isolation in a peripheral site (group 2, n=18). The immunoglobulin G ELISAs showed a higher sensitivity associated with lower specificity compared to the indirect immunofluorescence, counter-immunoelectrophoresis and total immunoglobulin ELISAs. Mannan antigen detection showed the highest specificity (78.9%). Its association with the detection of total anti-Candida immunoglobulins was more sensitive than the association of indirect immunofluorescence with counter-immunoelectrophoresis (95.4% versus 59%, respectively) with a specificity of 52.6% (versus 55.2%). Interest in the use of commercial ELISAs, more particularly the Platelia tests, has to be confirmed in a prospective study with follow-up of the patients.

Publication types

  • Comparative Study
  • Evaluation Study

MeSH terms

  • Antibodies, Fungal / blood*
  • Antigens, Fungal / analysis*
  • Candida / immunology*
  • Candida / isolation & purification
  • Candida albicans / immunology
  • Candida albicans / isolation & purification
  • Candidiasis / diagnosis*
  • Counterimmunoelectrophoresis
  • Enzyme-Linked Immunosorbent Assay*
  • Fluorescent Antibody Technique, Indirect
  • Fungemia / diagnosis*
  • Humans
  • Reagent Kits, Diagnostic
  • Sensitivity and Specificity

Substances

  • Antibodies, Fungal
  • Antigens, Fungal
  • Reagent Kits, Diagnostic