title: Increased levels of activated T-cells and reduced levels of CD4/CD25+ cells in peripheral blood of Guillain-Barré syndrome patients compared to controls.
abstract: Guillain-Barré syndrome (GBS) is a severe, self-limiting, autoimmune motor neuropathy. This study was performed to investigate the numbers of activated T-cells and regulatory T-cells, and CD95 and bcl-2 expression in GBS patients compared to controls. The percentage of cells expressing CD69 (activated T-cells) was increased in the blood of both patients with GBS and those with other neuropathies compared to healthy controls. GBS patients displayed significant decreases in the percentage of T-lymphocytes (CD3) and CD4/CD25+ cells (T regulatory cells) compared to patients with other neuropathies and a reduction in the percentage of cytotoxic/suppressor T-lymphocytes (CD8) compared to healthy controls. CD95 expression was reduced in GBS compared to patients with other neuropathies and expression of Bcl-2 was increased in GBS compared to healthy controls. We therefore suggest that in GBS there are increased activated T-cells and disturbances in regulatory T-cells and T-cell apoptosis.
authors.affiliation: Neuroimmunology Research Unit, Central Clinical School, The University of Queensland, Brisbane, Queensland, Australia.
authors.forename: J
authors.initials: J
authors.lastname: Harness
authors.forename: P A
authors.initials: PA
authors.lastname: McCombe
mesh_terms: D015703:Antigens, CD / Q000097:blood / Q000276:immunology; D000945:Antigens, Differentiation, T-Lymphocyte / Q000097:blood / Q000276:immunology; D017209:Apoptosis / Q000276:immunology; D015415:Biomarkers / Q000097:blood; D015704:CD4 Antigens / Q000378:metabolism*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D020275:Guillain-Barre Syndrome / Q000097:blood / Q000276:immunology*; D006801:Humans; D053645:Interleukin-2 Receptor alpha Subunit / Q000378:metabolism*; D037181:Lectins, C-Type; D008213:Lymphocyte Activation / Q000276:immunology*; D010525:Peripheral Nerves / Q000276:immunology / Q000503:physiopathology; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000097:blood / Q000378:metabolism; D013601:T-Lymphocytes / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology; D015854:Up-Regulation / Q000276:immunology; D019014:fas Receptor / Q000097:blood / Q000378:metabolism; D000099192:CD69 Antigens
chemical_list: D015703:Antigens, CD; D000945:Antigens, Differentiation, T-Lymphocyte; D015415:Biomarkers; D015704:CD4 Antigens; D053645:Interleukin-2 Receptor alpha Subunit; D037181:Lectins, C-Type; D019253:Proto-Oncogene Proteins c-bcl-2; D019014:fas Receptor; D000099192:CD69 Antigens