Article ; Online: Are the B cells cast with the leading part in the Sjogren's syndrome scenario?
2014 Volume 20, Issue 6, Page(s) 529–537
Abstract: The autoimmune exocrinopathy Sjögren's syndrome (SS) is characterized by mononuclear cell (MNC) infiltrates of exocrine glands and overactivity of B lymphocytes. Although T cells have long been perceived as the prime effectors, increasing evidence ... ...
Abstract | The autoimmune exocrinopathy Sjögren's syndrome (SS) is characterized by mononuclear cell (MNC) infiltrates of exocrine glands and overactivity of B lymphocytes. Although T cells have long been perceived as the prime effectors, increasing evidence indicates that the key role is rather served by B cells. Among related abnormalities are rheumatoid factor (RF), anti-SSA/Ro, and anti-SSB/La antibodies (Ab). Also, supporting this view is our finding of an increase in the number of circulating naïve mature B (Bm) cells, with a reciprocal decrease in that of memory B cells. Furthermore, a ratio of Bm2-plus-Bm2' cells to early Bm5-plus-late Bm5 above 5 is diagnostic. This variation partly reflects the migration of active memory B cells into the exocrine glands of the patients, as well as into their skin. More recently, the B-cell-activating factor of the TNF family (BAFF) has been endorsed with a pivotal role in B-cell survival and hence implicated in the pathogenesis of autoimmunity. In practice, B cells have turned quite attractive as a target for biotherapy. For example, treatment with anti-CD20 Ab has afforded some benefits in this disease, while BAFF blockers are still on the way, but should expand our armamentarium for treating SS. With such B-cell-directed biotherapies in mind, we delineate herein the distinguishing traits of B lymphocytes in SS. |
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MeSH term(s) | Antigens, CD/analysis ; B-Lymphocyte Subsets/chemistry ; B-Lymphocyte Subsets/classification ; B-Lymphocyte Subsets/immunology ; B-Lymphocyte Subsets/metabolism ; Cytokines/metabolism ; Humans ; Lymphocyte Count ; Salivary Glands/immunology ; Salivary Glands/pathology ; Sjogren's Syndrome/diagnosis ; Sjogren's Syndrome/drug therapy ; Sjogren's Syndrome/immunology |
Chemical Substances | Antigens, CD ; Cytokines |
Language | English |
Publishing date | 2014-09 |
Publishing country | Denmark |
Document type | Journal Article ; Review |
ZDB-ID | 1290529-x |
ISSN | 1601-0825 ; 1354-523X |
ISSN (online) | 1601-0825 |
ISSN | 1354-523X |
DOI | 10.1111/odi.12153 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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