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中华临床医师杂志(电子版) ›› 2018, Vol. 12 ›› Issue (12) : 659 -664. doi: 10.3877/cma.j.issn.1674-0785.2018.12.002

所属专题: 文献

临床研究

CD8 T淋巴细胞在急性脑梗死后肺炎发病中的作用
郝俊杰1, 杨江胜2, 朱祖福3, 高志强2, 孔玉明4, 李刚1,()   
  1. 1. 200125 同济大学附属上海东方医院神经内科
    3. 214400 东南大学医学院附属江阴市人民医院神经内科
    4. 200090 同济大学附属上海杨浦医院神经内科
  • 收稿日期:2018-01-25 出版日期:2018-06-15
  • 通信作者: 李刚
  • 基金资助:
    上海市浦东新区卫生系统重点学科群建设资助(PWZxq2017-08)

Role of CD8+ T lymphocytes in pathogenesis of pneumonia after acute cerebral infarction

Junjie Hao1, Jiangsheng Yang2, Zufu Zhu3, Zhiqiang Gao2, Yuming Kong4, Gang Li1,()   

  1. 1. Department of Neurology, East Hospital, Tongji University School of Medicine, Shanghai 200125, China
    2. Department of Neurology, Jiangyin People′s Hospital, Southeast University School of Medicine, Jiangsu 214400, China
    4. Department of Neurology, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China
  • Received:2018-01-25 Published:2018-06-15
  • Corresponding author: Gang Li
  • About author:
    Corresponding author: Li Gang, Email:
引用本文:

郝俊杰, 杨江胜, 朱祖福, 高志强, 孔玉明, 李刚. CD8 T淋巴细胞在急性脑梗死后肺炎发病中的作用[J]. 中华临床医师杂志(电子版), 2018, 12(12): 659-664.

Junjie Hao, Jiangsheng Yang, Zufu Zhu, Zhiqiang Gao, Yuming Kong, Gang Li. Role of CD8+ T lymphocytes in pathogenesis of pneumonia after acute cerebral infarction[J]. Chinese Journal of Clinicians(Electronic Edition), 2018, 12(12): 659-664.

目的

采用实验室检测结合临床评估手段,探索CD8 T淋巴细胞在急性脑梗死后肺炎发病中的作用。

方法

收集2014年12至2016年12月在同济大学附属上海东方医院神经内科和东南大学医学院附属江阴市人民医院神经内科住院治疗的急性脑梗死患者60例为研究对象。在脑梗死发病48 h内收集患者静脉血,分离外周血单核细胞,检测细胞表面CD107a,细胞内干扰素γ(IFN-γ)和肿瘤坏死因子α(TNF-α)。依据入组后住院期间是否发生肺炎将60例病例分为发生肺炎组和未发生肺炎组,采用t检验比较肺炎组混合病毒多肽干预及未干预患者、未发生肺炎组混合病毒多肽干预及未干预患者四者之间的外周血单核细胞层细胞表面CD107a脱颗粒、细胞内IFN-γ和TNF-α表达的差异。

结果

在混合病毒多肽刺激CD8 T淋巴细胞后,肺炎组细胞表面CD107a表达低于未发生肺炎组[(10.6±3.7)% vs (15.6±4.3)%)],细胞内IFN-γ表达低于非肺炎组[(15.3±4.3)% vs (20.0±5.1)%],TNF-α表达低于未发生肺炎组[(15.1±4.4)% vs (19.3±4.7)%],差异均具有统计学意义(t=3.192,P=0.004;t=4.127,P<0.001;t=3.621,P<0.001);在未经混合病毒多肽刺激时,肺炎组细胞内IFN-γ表达低于非肺炎组[(3.0±1.2)% vs (3.6±1.7)%)],TNF-α表达低于未发生肺炎组[(3.3±1.4)% vs (4.1±2.1)%],差异也具有统计学意义(t=3.734,P<0.001;t=3.189,P=0.004)。

结论

CD8 T淋巴细胞的细胞毒性作用抑制可能是急性脑梗死患者发生肺炎的重要机制之一。

Objective

To explore the role of CD8+ T lymphocyte in the pathogenesis of pneumonia after acute cerebral infarction by laboratory testing combined with clinical evaluation.

Methods

A total of 60 patients with acute cerebral infarction hospitalized at Department of Neurology of East Hospital Affiliated to Tongji University and Jiangyin People′s Hospital Affiliated to Southeast University from December 2014 to December 2016 were enrolled. Venous blood was collected from patients with cerebral infarction in 48 h of onset, and peripheral blood mononuclear cells were isolated. Cellular CD107a, intracellular IFN-γ and TNF-α were detected. According to whether pneumonia occurred during hospitalization, the 60 cases were divided into a pneumonia group or a non-pneumonia group. The difference in the positive expression of CD107a, IFN-γ and TNF-α was compared among the pneumonia group stimulated with hybrid viral peptides, non-pneumonia group stimulated with hybrid viral peptides, pneumonia group without hybrid viral peptide stimulation and non-pneumonia group without hybrid viral peptide stimulation.

Results

After stimulation with the hybrid viral peptides, CD107a positive expression rates in CD8+ T lymphocytes (10.6±3.7% vs 15.6±4.3%, t=3.192, P=0.004) and intracellular IFN-γ [(15.3±4.3)% vs (20.0±5.1)%, t=4.127, P<0.001] and TNF-α positive expression rates [(15.1±4.4)% vs (19.3±4.7)%, t=3.621, P<0.001] were significantly lower in the pneumonia group than in the non-pneumonia group. Without stimulation with the hybrid viral peptides, intracellular IFN-γ [(3.0±1.2)% vs (3.6±1.7)%, t=3.734, P<0.001] and TNF-α positive expression rates [(3.3±1.4)% vs (4.1±2.1)%, t=3.189, P=0.004] were significantly lower in the pneumonia group than in the non-pneumonia group.

Conclusion

The inhibition of cytotoxicity of CD8+ T lymphocytes is an important mechanism involved in the pathogenesis of pneumonia after acute cerebral infarction.

表1 发生肺炎组与未发生肺炎组患者一般临床资料的比较
表2 发生肺炎组与未发生肺炎组脑梗死患者是否经CEF刺激时CD8 T淋巴细胞的细胞毒性参数比较(±s
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