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  • Title: [Detection of antibody specific to rifampicin metabolite by ELISA--mechanism of sensitization by rifampicin].
    Author: Tomonaga H.
    Journal: Arerugi; 1993 Jul; 42(7):854-63. PubMed ID: 8363438.
    Abstract:
    A 46-year-old male tuberculosis patient developed acute renal failure and liver dysfunction following the oral administration of rifampicin (RFP). The mechanism of the reaction was examined by means of enzyme-linked immunosorbent assay (ELISA). 3-formylrifamycin-SV (Formylrifamycin), which is one of RFP metabolites, was conjugated to human serum albumin. ELISA was performed with this conjugate (Formylrifamycin-HSA) as an antigen. We also evaluated 100 tuberculosis patients receiving oral RFP and 45 healthy volunteers in order to determine the incidence of sensitization by RFP. IgG and IgM antibodies specific to Formylrifamycin-HSA were detected in serum from the patient with RFP-induced renal failure. Among the IgG subclasses, IgG1 antibody was detected. IgG and IgG1 antibodies specific to Formylrifamycin-HSA were detected in serum from only one of the 100 tuberculosis patients. Our results indicate that sensitization to RFP can occur on oral administration, and that acute renal failure was caused by IgG, IgM, and IgG1 antibodies specific to Formylrifamycin as a hapten.
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