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  • Title: Assays for, and cross-reactivities of, IgE antibodies to the muscle relaxants gallamine, decamethonium and succinylcholine (suxamethonium).
    Author: Harle DG, Baldo BA, Fisher MM.
    Journal: J Immunol Methods; 1985 Apr 22; 78(2):293-305. PubMed ID: 3989313.
    Abstract:
    Two radioimmunoassays have been developed to detect IgE antibodies to succinylcholine, decamethonium and gallamine in the sera of patients who have experienced life-threatening anaphylactoid reactions following administration of a muscle relaxant drug. They involve the coupling of choline and its ethyl analogue, triethylcholine to activated Sepharose. A high degree of cross-reactivity was shown to occur between drug-reactive IgE antibodies and 6 muscle relaxants as well as choline and triethylcholine. Results suggest that the specificities of the IgE antibodies are directed towards quaternary or tertiary ammonium ions on the drugs that bind the antibodies. Molecular models of these compounds support the structure-activity relationships determined in the inhibition studies.
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