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CTLA-4 expression in T cells of patients with atopic dermatitis

Authors
 Sung Yon Choi  ;  Myung Hyun Sohn  ;  Byoung Chul Kwon  ;  Kyu-Earn Kim 
Citation
 PEDIATRIC ALLERGY AND IMMUNOLOGY, Vol.16(5) : 422-427, 2005 
Journal Title
 PEDIATRIC ALLERGY AND IMMUNOLOGY 
ISSN
 0905-6157 
Issue Date
2005
MeSH
cytotoxic T lymphocyte associated antigen‐4 ; T cell ; atopic dermatitis
Keywords
cytotoxic T lymphocyte associated antigen‐4 ; T cell ; atopic dermatitis
Abstract
Cytotoxic T lymphocyte-associated antigen-4 (CTLA-4; CD152) is a surface molecule of activated T cells with sequence homologous to CD28, and may act as a negative regulator of T-cell activation. In murine animal models, cross-linkage of CTLA-4 molecules on the cell surface results in decreased T-cell proliferation, accompanied by increased interleukin (IL)-2 production and apotosis. To clarify the activation of peripheral blood T cells, we studied the CTLA-4 expression in 32 patients with atopic dermatitis who visited our institution, and 19 normal children who visited for pre-operative laboratory examination were used as normal controls. Whole blood was obtained from all subjects and stained with anti-CD3, anti-CD4, anti-CD8 monoclonal antibodies (mAb). After erythrocyte lysis with lysing solution, the cells were stained with anti-CTLA-4 mAb, and stained cells were analysed by fluorescence-activated cell sorter (FACScan) flow cytometer. Intracellular expression of CTLA-4 was significantly upregulated in peripheral blood CD3+ T cells (36.8%), CD4+ T cells (21.7%) and CD8+ T cells (18.7%) of patients with atopic dermatitis, compared with normal control (18.3%, 9.7%, 9.8%; respectively). Furthermore, CTLA-4-positive CD3+ T cells in patients with severe atopic dermatitis were significantly higher compared with milder group (42.8% vs. 32.2%). However, no significant difference was obtained in CD4+ and CD8+ T cells. Mean percentage of T cells expressing CTLA-4 in patients with atopic dermatitis was higher than the control group. These observations suggest the possibility that the disease activity can be correlated with the CTLA-4 level.
Full Text
http://onlinelibrary.wiley.com/doi/10.1111/j.1399-3038.2005.00274.x/abstract
DOI
10.1111/j.1399-3038.2005.00274.x
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Pediatrics (소아과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyu Earn(김규언)
Sohn, Myung Hyun(손명현) ORCID logo https://orcid.org/0000-0002-2478-487X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/150961
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