国际医药卫生导报 ›› 2025, Vol. 31 ›› Issue (1): 70-74.DOI: 10.3760/cma.j.cn441417-20240904-01015

• 论著 • 上一篇    下一篇

黏膜相关恒定T细胞在结核病合并糖尿病患者中的数量和功能变化

梁建嫦1  吴永坚2   

  1. 1广东药科大学附属第二医院 云浮市中医院检验科,云浮 527300;2中山大学附属第五医院感染与免疫学研究中心,珠海 519000

  • 收稿日期:2024-09-04 出版日期:2025-01-01 发布日期:2025-01-14
  • 通讯作者: 吴永坚,Email:wuyj228@mail.sysu.edu.cn
  • 基金资助:

    广东省自然科学基金(2023A1515030065)

Quantitative and functional alterations in mucosal-associated invariant T cells in tuberculosis patients with concurrent diabetes mellitus

Liang Jianchang1, Wu Yongjian2   

  1. 1 Department of Laboratory Medicine, The Second Affiliated Hospital of Guangdong Pharmaceutical University, Yunfu Hospital of Traditional Chinese Medicine, Yunfu 527300, China; 2 Center for Infection and Immunity, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China

  • Received:2024-09-04 Online:2025-01-01 Published:2025-01-14
  • Contact: Wu Yongjian, Email: wuyj228@mail.sysu.edu.cn
  • Supported by:

    Natural Science Foundation of Guangdong Province (2023A1515030065)

摘要:

目的 探讨初治涂阳肺结核合并糖尿病患者外周血黏膜相关恒定T(MAIT)细胞的数量和功能变化。方法 本研究为横断面研究。选取2022年10月至2023年10月在中山大学附属第五医院就诊的61例结核病患者为研究对象,根据结核病患者是否合并糖尿病分为肺结核合并糖尿病(PTB+DM)组及单纯肺结核(PTB)组。PTB组患者30例中男25例,女5例,年龄(33.14±8.76)岁。PTB+DM组患者31例中男22例,女9例,年龄(31.57±9.56)岁。检测两组患者的外周血MAIT细胞比例、MAIT细胞经牛分枝杆菌(BCG)感染后的活化标志CD69和细胞因子干扰素-γ(IFN-γ)表达变化。统计学方法采用t检验。结果 PTB+DM组患者外周血MAIT细胞比例低于PTB组[(1.04±0.13)%比(1.79±0.25)%],差异有统计学意义(t=2.727,P=0.008);PTB+DM组CD4+、CD8+T细胞比例分别为(22.91±1.77)%、(7.91±1.05)%,PTB组分别为(27.30±1.34)%、(10.47±1.41)%,差异均无统计学意义(t=1.971、1.469,均P>0.05)。PTB+DM组MAIT细胞经BCG感染后CD69表达和IFN-γ分泌水平均低于PTB组[(5.88±0.71)%比(9.04±1.08)%、(13.82±1.66)%比(26.06±3.77)%],差异均有统计学意义(均P<0.05)。结论 肺结核合并糖尿病患者外周血MAIT细胞数量减少,且活化和分泌细胞因子的能力明显下降。

关键词:

结核病, 糖尿病, 黏膜相关恒定T细胞

Abstract:

Objective To investigate changes in the quantity and function of peripheral blood mucosal-associated invariant T (MAIT) cells in newly diagnosed smear-positive pulmonary tuberculosis (PTB) patients with diabetes mellitus (DM). Methods This was a cross-sectional study.A total of 61 PTB patients treated in the Fifth Affiliated Hospital of Sun Yat-sen University from October 2022 to October 2023 were selected as the study objects. According to whether the PTB patients were combined with DM, they were divided into a PTB+DM group and a PTB group. Among the 30 patients in the PTB group, there were 25 males and 5 females, aged (33.14±8.76) years. Among the 31 patients in the PTB+DM group, there were 22 males and 9 females, aged (31.57±9.56) years. The proportion of MAIT cells in peripheral blood, the activation marker CD69 and cytokine interferon-γ (IFN-γ) expressions of MAIT cells after infected with Mycobacterium bovis BCG were detected in the two groups. t test was used for statistical analysis. Results The proportion of MAIT cells in peripheral blood of the PTB+DM group was lower than that of the PTB group [(1.04±0.13)% vs. (1.79±0.25)%], with a statistically significant difference (t=2.727, P=0.008). The proportions of CD4+ and CD8+T cells were (22.91±1.77)% and (7.91±1.05)% in the PTB+DM group, and (27.30±1.34)% and (10.47±1.41)% in the PTB group, without statistically significant difference (t=1.971 and 1.469, both P>0.05). The expression levels of CD69 and IFN-γ in MAIT cells after infection in the PTB+DM group were lower than those in the PTB group [(5.88±0.71)% vs. (9.04±1.08)%, (13.82±1.66)% vs. (26.06±3.77)%], with statistically significant differences (both P<0.05). Conclusions Peripheral blood MAIT cell numbers are reduced in PTB patients with concurrent DM, and their activation and cytokine secretion capacity are significantly impaired.

Key words:

Tuberculosis, Diabetes mellitus, Mucosal-associated invariant T cells