التفاصيل البيبلوغرافية
| العنوان: |
Image_4_CD4+ T Cells of Myasthenia Gravis Patients Are Characterized by Increased IL-21, IL-4, and IL-17A Productions and Higher Presence of PD-1 and ICOS.JPEG |
| المؤلفون: |
Merve Çebi, Hacer Durmus, Fikret Aysal, Berker Özkan, Gizem Engin Gül, Arman Çakar, Mehmet Hocaoglu, Metin Mercan, Sibel P. Yentür, Melih Tütüncü, Vildan Yayla, Onur Akan, Öner Dogan, Yeşim Parman, Güher Saruhan-Direskeneli |
| سنة النشر: |
2020 |
| مصطلحات موضوعية: |
Immunology, Applied Immunology (incl. Antibody Engineering, Xenotransplantation and T-cell Therapies), Autoimmunity, Cellular Immunology, Humoural Immunology and Immunochemistry, Immunogenetics (incl. Genetic Immunology), Innate Immunity, Transplantation Immunology, Tumour Immunology, Immunology not elsewhere classified, Genetic Immunology, Animal Immunology, Veterinary Immunology, T follicular helper cells, PD-1, ICOS, IL-21, IL-4, IL-17, CXCR5, myasthenia gravis, socio, psy |
| الوصف: |
Myasthenia gravis (MG) is an autoimmune disease mediated by autoantibodies predominantly against the acetylcholine receptor (AChR). Specific T cell subsets are required for long-term antibody responses, and cytokines secreted mainly from CD4 + T cells regulate B cell antibody production. The aim of this study was to assess the differences in the cytokine expressions of CD4 + T cells in MG patients with AChR antibodies (AChR-MG) and the effect of immunosuppressive (IS) therapy on cytokine activity and to test these findings also in MG patients without detectable antibodies (SN-MG). Clinically diagnosed AChR-MG and SN-MG patients were included. The AChR-MG patients were grouped as IS-positive and -negative and compared with age- and sex-matched healthy controls. Peripheral blood mononuclear cells were used for ex vivo intracellular cytokine production, and subsets of CD4 + T cells and circulating follicular helper T (cTfh) cells were detected phenotypically by the expression of the chemokine and the costimulatory receptors. Thymocytes obtained from patients who had thymectomy were also analyzed. IL-21, IL-4, IL-10, and IL-17A productions in CD4 + T cells were increased in AChR-MG compared to those in healthy controls. IS treatment enhanced IL-10 and reduced IFN-γ production in AChR-MG patients compared to those in IS-negative patients. Increased IL-21 and IL-4 productions were also demonstrated in SN-MG patients. Among CD4 + T cells, Th17 cells were increased in both disease subgroups. Treatment induced higher proportions of Th2 cells in AChR-MG patients. Both CXCR5 + and CXCR5 − CD4 + T cells expressed higher programmed cell death protein 1 (PD-1) and inducible costimulatory (ICOS) in AChR-MG and SN-MG groups, mostly irrespective of the treatment. Based on chemokine receptors on CXCR5 + PD-1 + in CD4 + T (cTfh) cells, in AChR-MG patients without treatment, the proportions of Tfh17 cells were higher than those in the treated group, whereas the Tfh1 cells were decreased compared with those in the controls. The . |
| نوع الوثيقة: |
still image |
| اللغة: |
unknown |
| العلاقة: |
https://doi.org/10.3389/fimmu.2020.00809.s004Test |
| DOI: |
10.3389/fimmu.2020.00809.s004 |
| الإتاحة: |
https://doi.org/10.3389/fimmu.2020.00809.s004Test |
| حقوق: |
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| رقم الانضمام: |
edsbas.ECC65062 |
| قاعدة البيانات: |
BASE |
