title: Cellular immunity aspects in elderly subjects with Paget's disease of bone.
abstract: The etiology and pathophysiology of Paget's disease of bone are not yet entirely defined. There is evidence suggesting the participation of the immune system in the pathophysiology of this disease. Hence, we examined T cell mitogenic proliferation, NK cell activity, T cell subsets, interleukin-1 (IL-1), and interleukin-6(IL-6) production by peripheral mononuclear cells and IL-6 levels in the peripheral blood sera of 17 Paget's patients aged (74.5 +/- 2.4 years) and of 17 elderly control subjects (74.7 +/- 2.2 years). Pagetic patients were found to have immunological parameters not significantly different from those of the elderly control group. Moreover, the results obtained from Paget's patients with the active form of the disease did not differ from those of patients with inactive disease. Therefore, at least on the basis of the parameters used in this study, it is possible to conclude that the cellular immunity of Paget's patients is not different from that of elderly control subjects and that the role of IL-1 and IL-6 in this disease should be reviewed.
authors.affiliation: Laboratório de Imunogenética e Transplante Experimental (LIM 56), Serviço de Clínica Geral do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), Av. Dr. Arnaldo, 455, CEP: 01246-903, São Paulo, Brazil.
authors.forename: V M
authors.initials: VM
authors.lastname: Natale
authors.forename: W J
authors.initials: WJ
authors.lastname: Filho
authors.forename: A J
authors.initials: AJ
authors.lastname: Duarte
mesh_terms: D000135:Acid Phosphatase / Q000097:blood; D000368:Aged; D000369:Aged, 80 and over; D000469:Alkaline Phosphatase / Q000097:blood; D016516:CD4-CD8 Ratio; D002118:Calcium / Q000097:blood / Q000652:urine; D003602:Cytotoxicity, Immunologic; D005260:Female; D006801:Humans; D007111:Immunity, Cellular; D007375:Interleukin-1 / Q000096:biosynthesis; D015850:Interleukin-6 / Q000096:biosynthesis; D007694:Killer Cells, Natural / Q000276:immunology; D007958:Leukocyte Count; D008213:Lymphocyte Activation; D018655:Lymphocyte Count; D008297:Male; D008875:Middle Aged; D010001:Osteitis Deformans / Q000097:blood / Q000276:immunology* / Q000652:urine; D010758:Phosphorus / Q000097:blood / Q000652:urine; D012016:Reference Values; D016176:T-Lymphocyte Subsets / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D007375:Interleukin-1; D015850:Interleukin-6; D010758:Phosphorus; D000469:Alkaline Phosphatase; D000135:Acid Phosphatase; D002118:Calcium