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Updated: Jul 20, 2026

Generation of Induced-pluripotent Stem Cells Using Fibroblast-like Synoviocytes Isolated from Joints of Rheumatoid Arthritis Patients
Published on: October 16, 2016
[Preponderant synthesis of rheumatoid factors by synovial plasma cells in rheumatoid polyarthritis]
Abstract:
Plasma cells synthesising rheumatoid factor have been identified by immunofluorescent studies of sections of cells eluted from synovial membranes poor in macrophages. More than 90% of the IgM plasma cells produce rheumatoid factor, while 50 to 60% of IgG plasma cells and only 10% of IgA plasma cells produce rheumatoid factor. The equivalent results obtained in patients with sero-positive and sero-negative rheumatoid arthritis suggest that auto-immunisation between the IgG plays the same determinant role in the pathophysiology of the two types of rheumatoid arthritis.
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