title: L-Thyroxine-induced leukopenia in a patient with Hashimoto's disease: involvement of suppressor-cytotoxic T cells.
abstract: A study of in vitro reactivity to L-T4, as assessed by peripheral blood lymphocyte transformation, was carried out in a patient with Hashimoto's disease who developed leukopenia during treatment with L-T4. L-T4 stimulated lymphocyte transformation in this patient. The proliferating cells were of T lineage and further typing demonstrated that they bore the OKT8 antigen. Cell-mediated immune reactions mediated by OKT8+T cells might have caused the leukopenia, although other mechanisms involving cytotoxic antibodies or antibody-dependent cell-mediated cytotoxicity cannot be excluded.
authors.forename: N
authors.initials: N
authors.lastname: Lahat
authors.forename: M
authors.initials: M
authors.lastname: Sheinfeld
authors.forename: E
authors.initials: E
authors.lastname: Baron
authors.forename: B
authors.initials: B
authors.lastname: Glaser
mesh_terms: D005260:Female; D006801:Humans; D007970:Leukopenia / Q000139:chemically induced* / Q000276:immunology; D008875:Middle Aged; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*; D013967:Thyroiditis, Autoimmune / Q000188:drug therapy* / Q000276:immunology; D013974:Thyroxine / Q000009:adverse effects*
chemical_list: D013974:Thyroxine