title: A rapid miniaturized solid-phase radioimmunoassay technique for secreted immunoglobulins, employing microtiter plates, antibody bound to polyacrylamide beads, and filter strip harvesting.
abstract: We have developed a solid-phase radioimmunoassay technique, which allows a large number of samples to be assayed, while minimizing amounts of reagents and technician time. The assay is run in microtiter plates, which results in improved organization, shorter assay set-up time and advantageous miniaturization. On the first day only 3 reagents are required: sample or standard, a 125I-labeled antigen, and an antibody attached to a polyacrylamide bead. After on overnight incubation period, the assay is harvested using a commercial microharvesting apparatus (24 samples/2 min) and placed directly into a gamma counter for counting. In the present study, we have developed the assay to measure secreted IgG, IgM and IgA, and we have compared our results with those of a standard radioimmunoassay technique. This rapid, simple, economical approach should be applicable to the radioimmunoassay of other substances as well.
mesh_terms: D000180:Acrylic Resins / Q000494:pharmacology*; D000818:Animals; D001666:Binding Sites, Antibody; D003432:Cross-Linking Reagents / Q000494:pharmacology; D004581:Electronics; D005374:Filtration / Q000295:instrumentation; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000096:biosynthesis*; D008904:Miniaturization; D011817:Rabbits; D011863:Radioimmunoassay / Q000379:methods; D013997:Time Factors; D000099166:Polyacrylamides
chemical_list: D000180:Acrylic Resins; D003432:Cross-Linking Reagents; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins; D000099166:Polyacrylamides