CD8+ T lymphocyte is a main source of interferon-gamma production in Takayasu's arteritis.

Abstract

Interferon-gamma (IFN-γ) is a cytokine involved in the pathogenesis of Takayasu's arteritis (TAK). However, the source of IFN-γ in TAK patients is not fully clear. We aimed to investigate the source of IFN-γ in TAK. 60 TAK patients and 35 health controls were enrolled. The lymphocyte subsets of peripheral blood were detected by flow cytometry, cytokines were detected by Bio-plex. The correlation among lymphocyte subsets, cytokines and disease activity indexes was analyzed by person correlation. The level of serum IFN-γ in TAK patients was significantly increased (P < 0.05). The percentage of CD3+IFN-γ+ cells in peripheral blood CD3+ cells was significantly higher in TAK patients than that of healthy control group (P = 0.002). A higher proportion of CD3+CD8+IFN-γ+ cells/CD3+IFN-γ+ cells (40.23 ± 11.98% vs 35.12 ± 11.51%, P = 0.049), and a significantly lower CD3+CD4+IFN-γ+/ CD3+CD8+IFN-γ+ ratio (1.34 ± 0.62% vs 1.80 ± 1.33%, P = 0.027) were showed in the TAK group than that of control group. The CD3+CD8+IFN-γ+/CD3+IFN-γ+ ratio was positively correlated with CD3+IFN-γ+cells/ CD3+cells ratio (r = 0.430, P = 0.001), serum IFN-γ level (r = 0.318, P = 0.040) and IL-17 level (r = 0.326, P = 0.031). It was negatively correlated with CD3+CD4+IFN-γ+/CD3+IFN-γ+ ratio (r = - 0.845, P < 0.001). IFN-γ secreted by CD3+CD8 + T cells is an important source of serum IFN-γ in TAK patients.

• Authors: Yan-Long Ren, Tao-Tao Li, Wei Cui, Li-Min Zhao, Na Gao, Hua Liao, Jiang-Hui Zhang, Jun-Ming Zhu, Zhi-Yu Qiao, Shi-Chao Guo, Li-Li Pan
• Journal: Scientific reports (Sci Rep) Vol. 11 Issue 1 Pg. 17111 (08 24 2021) ISSN: 2045-2322 [Electronic] England
• PMID: 34429489 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © 2021. The Author(s).

Chemical References

• Interferon-gamma

Topics

• Adult
• CD8-Positive T-Lymphocytes (immunology)
• Cells, Cultured
• Female
• Humans
• Interferon-gamma (genetics, metabolism)
• Male
• Middle Aged
• Takayasu Arteritis (blood, immunology)