Abstract:
:To clarify the differential state of B cell activation in patients with systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA), we investigated the expression of low-affinity receptor for IgE (Fc epsilon RII; CD23) on their peripheral B cells by a cytofluorometry using H107 (CD23) and Leu-16 (CD20) monoclonal antibodies. The percentage of CD23-negative B cells in total lymphocytes was significantly greater in both groups of patients than in normal subjects, suggesting the hyperactivity of late-phase B cells in both diseases. However, the increase of CD23-negative B cells in RA was brought about by the increased number of total B cells, although that in SLE was mainly based on the relative decrease of CD23-positive B cells. The number of IgD-positive B cells was decreased, and the number of colony-forming B cells was markedly increased in SLE patients. These observations indicate that a B cell abnormality is mainly qualitative in SLE but quantitative in RA.
journal_name
Clin Exp Immunoljournal_title
Clinical and experimental immunologyauthors
Kumagai S,Ishida H,Iwai K,Tsubata T,Umehara H,Ozaki S,Suginoshita T,Araya S,Imura Hsubject
Has Abstractpub_date
1989-12-01 00:00:00pages
348-53issue
3eissn
0009-9104issn
1365-2249journal_volume
78pub_type
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