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J Neuroimmunol. 2006 Sep;178(1-2):161-6. Epub 2006 Jul 3.

The thymus is a source of B-cell-survival factors-APRIL and BAFF-in myasthenia gravis.

Author information

1
Neurology Division, Department of Clinical Neuroscience, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden. Mathula.Thangarajh@ki.se

Abstract

The accumulation of B cells in the thymus is a common feature of myasthenia gravis (MG). To understand whether factors enhancing B-cell survival are increased in MG, we studied the expression of APRIL, BAFF and three of their receptors in the thymus. In hyperplastic thymi, macrophages expressed APRIL and BAFF, and germinal-center B cells, BAFF-R. CD138-positive plasma cells were abundant in MG thymi. By contrast, BCMA-positive plasma cells were scarce. The expression of APRIL and BAFF in MG thymi may reflect the establishment of an environment favorable to B-cell survival.

PMID:
16820216
DOI:
10.1016/j.jneuroim.2006.05.023
[Indexed for MEDLINE]

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