title: Activated T lymphocytes in cerebrospinal fluid of patients with HTLV-I-associated myelopathy (HAM/TSP).
abstract: In order to detect activated T lymphocytes in the cerebrospinal fluid (CSF) of patients with human T lymphotropic virus type I (HTLV-I)-associated myelopathy/tropical spastic paraparesis (HAM/TSP), we studied CSF lymphocytes in untreated patients with HAM/TSP and other neurological diseases (OND). Dual-immunofluorescence staining technique was performed using fluorescence microscopy. No significant difference in the CD4+/CD8+ ratio of CSF lymphocytes was observed between HAM/TSP patients and patients with OND. However, both CD4+ and CD8+ CSF lymphocytes of HAM/TSP patients contained higher percentages of HLA-DR-positive cells than those of patients with OND (P less than 0.05), suggesting that the activated CSF T lymphocytes were composed of both CD4+ and CD8+ subsets in patients with HAM/TSP.
authors.affiliation: Third Department of Internal Medicine, Faculty of Medicine, Kagoshima University, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Ijichi
authors.forename: N
authors.initials: N
authors.lastname: Eiraku
authors.forename: M
authors.initials: M
authors.lastname: Osame
authors.forename: S
authors.initials: S
authors.lastname: Izumo
authors.forename: R
authors.initials: R
authors.lastname: Kubota
authors.forename: I
authors.initials: I
authors.lastname: Maruyama
authors.forename: M
authors.initials: M
authors.lastname: Matsumoto
authors.forename: T
authors.initials: T
authors.lastname: Niimura
authors.forename: S
authors.initials: S
authors.lastname: Sonoda
mesh_terms: D000911:Antibodies, Monoclonal; D000945:Antigens, Differentiation, T-Lymphocyte / Q000032:analysis; D006684:HLA-DR Antigens / Q000032:analysis; D006801:Humans; D008213:Lymphocyte Activation; D015493:Paraparesis, Tropical Spastic / Q000134:cerebrospinal fluid*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000945:Antigens, Differentiation, T-Lymphocyte; D006684:HLA-DR Antigens