title: [Cytofluorometric study of the cell cycle and various lymphocyte differentiation membrane antigens in the synovial fluid in rheumatoid polyarthritis].
abstract: Synovial fluid lymphocytes were studied by cytofluorometry in 11 patients with classical or definite rheumatoid arthritis. This method allowed the study of the cellular cycle after acridine orange staining and of membrane antigens, expressed by normal and/or activated lymphocytes, which were demonstrated by using various monoclonal antibodies (OKT3, OKT4, OKT8, OKIa1, OKT10). The OKT4/OKT8 ratio was decreased in 4 out of 5 cases and the percentage of HLA DR + cells was clearly increased. In 6 out of the 11 patients, the percentage of dividing cells varied from 2.2 to 7.2 and was less than 1 in the others as in normal blood lymphocytes. Increase in cellular RNA content characterized the non dividing cells. The most elevated values of the cellular RNA content were observed in patients who had the smallest percentage of dividing cells, suggesting that the cellular cycle was stopped between the G1 and S phases. Study of the cellular cycle may reveal a lymphocyte activation parameter which could be unrelated to the expression of differentiation membrane antigens.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000954:Antigens, Surface / Q000032:analysis*; D001172:Arthritis, Rheumatoid / Q000276:immunology* / Q000473:pathology; D002453:Cell Cycle; D002455:Cell Division; D005260:Female; D005434:Flow Cytometry; D005455:Fluorescent Antibody Technique; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II / Q000032:analysis; D006801:Humans; D008214:Lymphocytes / Q000276:immunology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D013582:Synovial Fluid / Q000166:cytology / Q000276:immunology*
chemical_list: D000954:Antigens, Surface; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II
vernacular_title: Etude cytofluorométrique du cycle cellulaire et de certains antigènes membranaires de différenciation des lymphocytes du liquide synovial au cours de la polyarthrite rhumatoïde.