title: Differences in T cell subsets between men and women with idiopathic thrombocytopenic purpura.
abstract: Idiopathic thrombocytopenic purpura (ITP) is an autoimmune disorder, occurring predominantly in women. We studied by flow cytofluorimetry the T cell subsets in men and women with ITP and compared them with healthy sex-matched volunteers. In healthy controls, women were found to have higher proportions of T helper/inducer (Th/i) and lower T suppressor/cytotoxic (Ts/c) lymphocytes and consequently higher Th/i:Ts/c ratios than men. Accordingly, in clinical surveys, patients and controls should be matched for sex for proper comparisons. In patients with ITP in its active phase, an imbalance in T cell subsets was found in both sexes. The perturbation was more severe in women who had a marked decrease in number and proportion of Th/i lymphocytes and an increase in the proportion of Ts/c lymphocytes, whereas in men only, the proportion of Th/i lymphocytes was decreased. When patients with active disease were compared to those with ITP in remission, the decrease in Th/i subsets still persisted in both sexes but the Ts/c subset in women had returned to normal proportions. Therefore, the immune imbalance in ITP is more marked in women than men; imbalances in both Th/i and Ts/c are present in women while Ts/c appears not to be involved in men.
authors.forename: R
authors.initials: R
authors.lastname: Mylvaganam
authors.forename: Y S
authors.initials: YS
authors.lastname: Ahn
authors.forename: W J
authors.initials: WJ
authors.lastname: Harrington
authors.forename: C I
authors.initials: CI
authors.lastname: Kim
authors.forename: H G
authors.initials: HG
authors.lastname: Gratzner
mesh_terms: D003613:Danazol / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008297:Male; D011241:Prednisone / Q000627:therapeutic use; D011696:Purpura, Thrombocytopenic / Q000276:immunology* / Q000628:therapy; D012737:Sex Factors; D013156:Splenectomy; D013601:T-Lymphocytes / Q000145:classification*; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*
chemical_list: D003613:Danazol; D011241:Prednisone