PMID: 3760581Sep 27, 1986Paper

Development and optimization of the FAST-ELISA for detecting antibodies to Schistosoma mansoni

Journal of Immunological Methods
K Hancock, V C Tsang

Abstract

The Falcon assay screening test (F.A.S.T.) system was used to develop a rapid, sensitive, and quantitative kinetic-based enzyme-linked immunosorbent assay (k-ELISA) for detecting antibodies against Schistosoma mansoni adult microsomal antigens (MAMAs). The FAST-ELISA uses polystyrene beads on sticks molded to the lid of a microtitration plate. The beads are coated with antigen. Reagents and sera are placed in microtitration plates and the beads exposed to reagents by immersion. The exposure time required for a single dilution of serum or other antibody source, conjugate, and substrate is 5 min each. Excluding preparation time, two plates can easily be assayed in 30 min. The optima for assay conditions, reproducibility, quantitative linearity, and sensitivity are delineated. A battery of sera from patients with both homologous and heterologous infections was tested, and a dilution series of a standard reference serum pool was included with each test. Results were expressed in number of units as calibrated against the standard reference sera pool. Antigen-coated bead storage studies were performed with untreated and three chemically treated antigens. The storage stability of MAMA, ability to perform the assay with minimal equipme...Continue Reading

Citations

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