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- Title
A possible role of apoptosis for regulating autoreactive responses in systemic lupus erythematosus.
- Authors
Funauchi, M; Sugiyama, M; SukYoo, B; Ikoma, S; Ohno, M; Kinoshita, K; Kanamaru, A
- Abstract
It has been reported that apoptotic cells are increased in the peripheral blood from patients with systemic lupus erythematosus (SLE), where dysfunctions of T helper 1 (Th1) cells are known. In order to study whether apoptosis of Th1 cells is associated with the pathogenesis of SLE, early apoptotic cells in various T-cell subsets were detected using fluorescence-labeled annexin V (AnV). AnV binding was most frequently observed in CD4+CCR5+ T cells, and AnV binding rate (%) in this subset was higher in SLE than in normal controls (14.7 +/- 2.6), although that in active SLE (43.6 +/- 7.3) tended to be lower than that in inactive SLE (48.0 +/- 6.8). CD95/Fas expression was also increased in both active and inactive SLE. In some SLE patients, AnV binding rate changed in inverse proportion to titer of the serum anti-DNA antibody and in proportion to serum complement activity. These data suggest that apoptosis in Th1 cells is important in the pathogenesis of SLE and might play a role in regulating over-activation or autoreactive responses by T cells.
- Publication
Lupus, 2001, Vol 10, Issue 4, p284
- ISSN
0961-2033
- Publication type
Journal Article
- DOI
10.1191/096120301680416977