Abstract
We report the development of a solid-phase radioimmunoassay for the detection of IgG antibodies to herpes simplex virus (HSV), using a mouse monoclonal antibody specific for the Fc portion of human IgG as the radiolabelled detecting antibody. The binding ratio to test antigen at a single serum dilution, 1:100, correlated significantly with the endpoint titre by radioimmunoassay and with neutralising antibody titre. When compared to neutralisation the radioimmunoassay had a sensitivity of 100% and a specificity of 93%. We believe that the anomalous results are not false positives but represent an increased sensitivity of the radioimmunoassay. We found, by either radioimmunoassay or neutralisation, that high levels of antibody prior to transplantation were associated with a significantly increased risk of HSV excretion post-transplantation in both renal and bone marrow transplant recipients. Thus the radioimmunoassay is a sensitive, specific, and rapid test that can be used as a prognostic indicator of HSV excretion in transplant recipients.
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