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Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay
06:15

Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay

Published on: September 7, 2018

Enzyme-like immunosorbent assay (ELISA) for immunoglobulin G antibodies against insect venoms

J A Grant, R M Goldblum, R Rahr

    The Journal of Allergy and Clinical Immunology
    |August 1, 1981
    PubMed

    IgG "blocking" antibodies were measured in patients receiving insect venom immunotherapy. The enzyme-linked immunosorbent assay (ELISA) described herein was found to be sensitive and reproducible. Results with ELISA correlated well with values obtained with a radioimmunoassay and with inhibition of the release of histamine from sensitive basophils. Also, specific antibody titers against phospholipase A and whole bee venom were correlated. Serial determinations of venom-specific IgG antibodies were made in 17 patients receiving Polistes wasp or bee venom immunotherapy. The majority of patients showed a rise in IgG antibodies, which peaked after administration of approximately 500 micrograms of venom. Only one out of 13 of these venom-treated patients had allergic symptoms after an insect sting while on maintenance therapy.

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    Enzyme-Linked Immunosorbent Assay01:33

    Enzyme-Linked Immunosorbent Assay

    In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
    There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen.  Enzyme-substrate reaction allows the antigen to be visualized or quantified.