title: Patterns of peripheral cellular immune disorders in severe rheumatoid arthritis.
abstract: The study is focused on the correlated peripheral cellular immune disorders registered in a group of 23 patients with severe, progressive rheumatoid arthritis, on methotrexate therapy. We investigated a panel of peripheral immune parameters: leukocyte counts, the proportions of lymphocyte populations (T, Thelper, Tcytotoxic/suppressor, B lymphocytes and NK cells) and the polyclonal activation of lymphocytes. Results show that leukocytosis is due to simultaneously elevated values of monocytes, granulocytes and, to a lesser extent, lymphocytes. The registered high values of the Th to Tc/s ratio are mainly attributed to the abnormal low proportions of the Tc/s subpopulation. Inverse correlations were emphasized between B, Tc/s lymphocytes and NK cells or granulocytes. The unbalance of the lymphocyte to monocyte ratio or of the Th to Tc/s ratio does not impair the polyclonal activation of lymphocytes. In conclusion, we have characterized different patterns of correlated cellular peripheral immune disorders in rheumatoid arthritis, associated to pathological processes in conjunction with the immunsuppressive and anti-inflammatory action of methotrexate that might be relevant for further investigation of disease and further therapy outcome. We emphasize the special relation between the adaptive and innate immune system at the level of cell counts and proportions. The correlations between the peripheral abnormalities in the rheumatoid arthritis group are better highlighted by analyzing subgroups of patients characterized by particular values of the investigated parameters.
authors.affiliation: Department of Immunology, "Victor Babeş" National Institute, Bucharest, Romania. imunoc@vbabes.ro
authors.forename: Gina
authors.initials: G
authors.lastname: Manda
authors.forename: Monica
authors.initials: M
authors.lastname: Neagu
authors.forename: Carolina
authors.initials: C
authors.lastname: Constantin
authors.forename: Alina
authors.initials: A
authors.lastname: Radulescu
authors.forename: Catalin
authors.initials: C
authors.lastname: Codreanu
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use; D001172:Arthritis, Rheumatoid / Q000188:drug therapy / Q000276:immunology*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D007111:Immunity, Cellular; D008297:Male; D008727:Methotrexate / Q000627:therapeutic use; D008875:Middle Aged
chemical_list: D018501:Antirheumatic Agents; D008727:Methotrexate