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  • Title: Development and loss of toluene diisocyanate reactivity: immunologic, pharmacologic, and provocative challenge studies.
    Author: Butcher BT, O'Neil CE, Reed MA, Salvaggio JE, Weill H.
    Journal: J Allergy Clin Immunol; 1982 Oct; 70(4):231-5. PubMed ID: 6288789.
    Abstract:
    Toluene diisocyanate (TDI) sensitivity accompanied by nonspecific bronchial hyperresponsiveness occurs in approximately 5% of occupationally exposed workers. We report the case of a 32-yr-old worker followed longitudinally after removal from isocyanate exposure. TDI reactivity was lost 11 mo after removal from exposure and nonspecific bronchial hyperresponsiveness resolved after 17 mo. Bronchial reactivity to radishes (Raphanus sativus), which developed concurrently with TDI reactivity, was lost 2 yr later. Immunopharmacologic results show that the worker's initial decreased ability of lymphocytes to produce cyclic AMP returned to near normal after 2 yr. IgE antibodies to a human serum albumin tolyl monoisocyanate conjugate were still present at this time.
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