Abstract:
:The aim of this study is to explore the dynamic changes in IL-17-expressing T cells (Th17)/Treg expression in monophasic experimental autoimmune uveitis (mEAU). mEAU was induced in Lewis rats with IRBP1177-1191 peptide and evaluated clinically and pathologically on days 9, 13, 18, 23, 28, 35, and 48. Lymphocytes isolated from inguinal lymph nodes were subjected to flow cytometry to analyze the frequency of Th17/Treg cells. The levels of cytokines (IL-17, IL-6, IL-10, transforming growth factor (TGF)-β) in serum were detected by enzyme-linked immunosorbent assay (ELISA). Real-time quantitative PCR (RT-PCR) was used for measuring the levels of IL-17, IL-6, TGF-β, and Foxp3. Clinical and histopathologic assessment showed that mEAU began on day 9, peaked on day 13, and decreased to normal on day 18. The frequency of Th17 cells increased obviously on day 9, peaking on day 13, while the frequency of Treg cells increased on day 13, peaked on day 18, and remained at a high level until day 48. In the serum, the levels of IL-17 and IL-6 peaked on day 9 and gradually decreased to normal on day 28. The level of TGF-β increased on day 9, peaked on day 13, and decreased to normal on day 35. Meanwhile, the level of IL-10 increased on day 9 and stayed at a high level until day 48. Additionally, the above results were further confirmed by RT-PCR. The imbalance between Th17 and Treg cells contributes to the onset and progression of mEAU, and a compartmental imbalance of Treg over Th17 exists in the recovery phase of mEAU.
journal_name
Inflammationjournal_title
Inflammationauthors
Zhang L,Wan F,Song J,Tang K,Zheng F,Guo J,Guo D,Bi Hdoi
10.1007/s10753-015-0229-7subject
Has Abstractpub_date
2016-02-01 00:00:00pages
113-122issue
1eissn
0360-3997issn
1573-2576pii
10.1007/s10753-015-0229-7journal_volume
39pub_type
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