title: Numerical defects in CD8+CD28- T-suppressor lymphocyte population in patients with type 1 diabetes mellitus and multiple sclerosis.
abstract: Type 1 diabetes mellitus (T1D) and multiple sclerosis (MS) are organ-specific autoimmune diseases leading to an attack of auto-aggressive lymphocytes against the pancreatic beta-cells and central nervous system, respectively. Using four-colour flow cytometry, T-lymphocyte populations having an important function in autoimmune processes were analyzed. T-regulatory cells (Treg) CD4(+)CD25(+)CD127(low), T-suppressor cells (Ts) CD8(+)CD28(-), activated helper CD4(+)CD25(+)CD127(+) and cytotoxic CD8(+)CD25(+) T-cells and also naive CD4(+)CD45RA(+) and memory T-cells CD4(+)CD45RO(+) were compared in the group of patients with T1D (n=30), MS (n=31) and in the group of healthy controls (n=29). Significant differences in Ts cells, activated helper and cytotoxic cells and also memory T-cells were recognized in the group of T1D patients compared to healthy controls. Ts population was significantly lowered in MS patients as well. However, no significant differences were noticed in Treg population. The observed data demonstrate significant differences among patients with T1D and MS in comparison to healthy individuals.
authors.affiliation: University Cell Immunotherapy Center, Babak Research Institute, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
authors.forename: Zuzana
authors.initials: Z
authors.lastname: Mikulkova
authors.forename: Petra
authors.initials: P
authors.lastname: Praksova
authors.forename: Pavel
authors.initials: P
authors.lastname: Stourac
authors.forename: Josef
authors.initials: J
authors.lastname: Bednarik
authors.forename: Lucie
authors.initials: L
authors.lastname: Strajtova
authors.forename: Rita
authors.initials: R
authors.lastname: Pacasova
authors.forename: Jana
authors.initials: J
authors.lastname: Belobradkova
authors.forename: Petr
authors.initials: P
authors.lastname: Dite
authors.forename: Jaroslav
authors.initials: J
authors.lastname: Michalek
mesh_terms: D000293:Adolescent; D000328:Adult; D018106:CD28 Antigens / Q000276:immunology*; D018414:CD8-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology*; D003922:Diabetes Mellitus, Type 1 / Q000276:immunology*; D005260:Female; D005434:Flow Cytometry / Q000379:methods; D006801:Humans; D007156:Immunologic Memory / Q000276:immunology; D018655:Lymphocyte Count; D008297:Male; D008875:Middle Aged; D020529:Multiple Sclerosis, Relapsing-Remitting / Q000276:immunology*; D016176:T-Lymphocyte Subsets / Q000166:cytology / Q000276:immunology*; D055815:Young Adult
chemical_list: D018106:CD28 Antigens