title: Increased serum interleukin-18 in a patient with systemic lupus erythematosus and T-cell large granular lymphocytic leukemia.
abstract: Interleukin-18 (IL-18) is a potent cofactor for T-helper (Th-1) cell development and inducer of cytotoxic T lymphocytes (CTL), and is reported to contribute to autoimmune diseases. T-cell large granular lymphocyte (T-LGL) leukemia involves the proliferation of autoreactive CTL that is often associated with autoimmune disorders. We found increased serum IL-18 concentrations in a 55-year-old woman with systemic lupus erythematosus (SLE) and T-LGL-leukemia. Her serum IL-18 concentrations correlated with the intensity of her SLE symptoms and the number of T-LGL cells in peripheral blood. This evidence suggests that IL-18 is involved in T-LGL-related autoimmune disorders.
authors.affiliation: Division of Rheumatology, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya 663-8131, Japan. a-ogata@hyo-med.ac.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Ogata
authors.forename: Masayasu
authors.initials: M
authors.lastname: Kitano
authors.forename: Maki
authors.initials: M
authors.lastname: Fukamizu
authors.forename: Teruaki
authors.initials: T
authors.lastname: Hamano
authors.forename: Hajime
authors.initials: H
authors.lastname: Sano