Immunosuppressive Activity of Abatacept on Circulating T Helper Lymphocytes from Juvenile Idiopathic Arthritis Patients

被引:17
作者
Maggi, Laura [1 ,2 ]
Cimaz, Rolando [3 ]
Capone, Manuela [1 ,2 ]
Santarlasci, Veronica [1 ,2 ]
Rossi, Maria Caterina [1 ,2 ]
Mazzoni, Alessio [1 ,2 ]
Montaini, Gianni [1 ,2 ]
Pagnini, Ilaria [3 ]
Giani, Teresa [3 ]
Simonini, Gabriele [3 ]
Scaletti, Cristina [1 ,2 ]
Liotta, Francesco [1 ,2 ]
Maggi, Enrico [1 ,2 ]
Annunziato, Francesco [1 ,2 ]
Cosmi, Lorenzo [1 ,2 ]
机构
[1] Univ Florence, Dept Expt & Clin Med, Largo Brambilla 3, IT-50134 Florence, Italy
[2] Univ Florence, DENOTHE Ctr, Florence, Italy
[3] Univ Florence, Anna Meyer Childrens Hosp, Florence, Italy
关键词
CD4+T cells; Biological therapy; Cytokines; RHEUMATOID-ARTHRITIS; DOUBLE-BLIND; CELLS; PLACEBO; METHOTREXATE; ETANERCEPT; PHENOTYPE; CHILDREN; EFFICACY; THERAPY;
D O I
10.1159/000450948
中图分类号
R392 [医学免疫学];
学科分类号
100102 ;
摘要
Background: Abatacept is used in the treatment of juvenile idiopathic arthritis (JIA) patients, but the activity of the drug on T helper cell function is not yet fully known. Methods: The ability of abatacept to affect cytokine production in vitro and the proliferative response to both recall antigens and polyclonal stimulation was firstly assessed in healthy donors. Then, 10 JIA patients who were due to start abatacept treatment were recruited and longitudinally evaluated during the first 90 days of therapy. Both their clinical response to the treatment and in vitro analysis aimed to assess the proliferative response to recall antigens and the proportions of circulating T helper subsets. Results: Abatacept reduced the proliferative response to recall antigens and the production of proinflammatory cytokines such as IFN-gamma and TNF-alpha in healthy donors in vitro. It was also efficient in improving symptoms and reducing parameters of inflammation in JIA patients. Abatacept reduced the proliferative response to recall antigens, and this effect was significant soon after drug infusion (2 days). Regarding the proportions of circulating CD4+ T lymphocytes, only a reduction in the frequencies of circulating Treg cells was observed. Conclusions: Abatacept in vitro inhibits proliferation and cytokine production in healthy donors, and reduces parameters of inflammation in vivo in JIA patients. The reduction of the proliferative response to recall antigens induced by abatacept was evident only soon after drug administration, suggesting that its immunosuppressive activity is maintained only for a short time. (C) 2016 S. Karger AG, Basel
引用
收藏
页码:45 / 53
页数:9
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