title: [Circulating CD8 as an indicator of inflammatory rheumatic disease].
abstract: An enzyme-linked immunoassay detecting soluble CD8 (s-CD8) was applied to study activation of CD8(+)-(suppressor/cytotoxic) T-cells in patients with rheumatic diseases. Compared with normals, s-CD8 levels were elevated in patients with rheumatoid arthritis, ankylosing spondylitis, and polymyositis. In contrast, low s-CD8 values were observed in patients with progressive systemic sclerosis/scleroderma. In systemic lupus erythematosus (SLE), s-CD8 values were correlated with C-reactive protein. This finding and an association with other parameters of clinical activity were confirmed by longitudinal studies. In summary, our findings support the view that implication of CD8(+)-T-cell activation is different in the pathogenesis of each rheumatic disease. Elevated s-CD8 indicates active disease, and can be used to monitor CD8(+)-T-cell activation in SLE while determination of s-CD8 seems to be of little clinical value in the other rheumatic diseases studied.
authors.affiliation: Medizinische Klinik III und Poliklinik, Universität Giessen.
authors.forename: H
authors.initials: H
authors.lastname: Becker
authors.forename: E
authors.initials: E
authors.lastname: Paul
authors.forename: S
authors.initials: S
authors.lastname: Schaum
authors.forename: M
authors.initials: M
authors.lastname: Renelt
authors.forename: K
authors.initials: K
authors.lastname: Federlin
mesh_terms: D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000097:blood*; D015415:Biomarkers; D016516:CD4-CD8 Ratio; D016827:CD8 Antigens / Q000097:blood*; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000097:blood*; D016131:Lymphocyte Subsets; D008297:Male; D008875:Middle Aged; D012595:Scleroderma, Systemic / Q000097:blood*; D012995:Solubility
chemical_list: D015415:Biomarkers; D016827:CD8 Antigens
vernacular_title: Zirkulierendes CD8 als Aktivitätsparameter bei entzündlich-rheumatischen Erkrankungen.