کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6162052 1249382 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
B-lymphocytes support and regulate indirect T-cell alloreactivity in individual patients with chronic antibody-mediated rejection
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی بیماری‌های کلیوی
پیش نمایش صفحه اول مقاله
B-lymphocytes support and regulate indirect T-cell alloreactivity in individual patients with chronic antibody-mediated rejection
چکیده انگلیسی
We explored how B-lymphocytes influence in vitro T-cell alloresponses in patients with antibody-mediated rejection (AMR), testing whether B-cells would be preferentially involved in this group of patients. Peripheral blood mononuclear cells were collected from 65 patients having biopsy: 14 patients with AMR and 5 with no pathology on protocol; 38 with AMR and 8 with nonimmunologic damage on 'for cause'. Using enzyme-linked immunosorbent spot assays, we found interferon-γ production by indirect allorecognition in 45 of 119 total samples from the 65 patients. B-cells preferentially processed and presented donor alloantigens in samples from AMR patients. In a further 25 samples, B-cell-dependent allo-specific reactivity was shown by depletion of CD25+ cells and these individuals had higher percentages of CD4CD25hi cells. In 21 samples, reactivity was shown by depletion of CD19+ cells, associated with polarized cytokine production toward IL-10 after polyclonal activation by IgG/IgM. Overall, this shows a significant contribution by B-cells to indirect donor-specific T-cell reactivity in vitro in patients with AMR. Active suppression by distinct phenotypes of T- or B-cells in approximately half of the patients indicates that chronic AMR is not characterized by a universal loss of immune regulation. Thus, stratified approaches that accommodate the heterogeneity of cell-mediated immunity might be beneficial to treat graft dysfunction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Kidney International - Volume 88, Issue 3, September 2015, Pages 560-568
نویسندگان
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