重型颅脑损伤T淋巴细胞亚群的变化
Change of T lymphocyte subsets in patients with severe craniocerebral injury
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摘要: 目的:探讨重型颅脑损伤后T淋巴细胞亚群变化规律,为进行免疫干预预防感染提供参考依据。方法:选择单纯重型颅脑损伤格拉斯哥昏迷评分≤8分的患者30例为观察组,同期单纯轻型颅脑损伤格拉斯哥昏迷评分=14~15分患者30例为对照组。采用免疫荧光三色标记流式细胞仪对2组患者伤后第1、3、7和14天外周血T淋巴细胞亚群进行检测。结果:与对照组比较,观察组伤后第1天CD3、 CD4、CD4/CD8开始下降,CD8升高,第3天CD3、 CD4、CD4/CD8明显下降,CD8明显升高,第7天开始恢复,第14天基本同正常水平,2组伤后第1、3和7天差异均有统计学意义(P<0.05~P<0.01)。而伤后第14天 2组4项指标差异均无统计学意义(P>0.05)。观察组伤后第4天肺部感染73.3%,对照组无肺部感染,2组差异有统计学意义(P<0.01)。结论:重型颅脑损伤后T淋巴细胞亚群变化规律为伤后第1天开始下降,第3天下降明显,第7天开始恢复,第14天基本恢复到正常水平,可考虑重型颅脑损伤后进行免疫干预预防感染。Abstract: Objective: To detect the change rules of T lymphocyte subsets in patients with severe craniocerebral injury to provide the basis in preventing infection by immunologic intervention.Methods: Thirty severe craniocerebral injury patients with glasgow coma score(GCS)≤8 and 30 light craniocerebral injury patients GCS =14 to 15 were divided into the observation group and control group,respectively.The expressions of lymphocyte subsets(including CD3,CD4,CD8,CD4/CD8 T) of peripheral blood in two groups after 1,3,7 d and 14 d of injury were detected using the immunofluorescent three-color flow cytometry.Results: Compared with the control group,the levels of CD3,CD4 and CD4/CD8 began to decrease,and the level of CD8 increased 1 d after injury in observation group.Compared with the control group,the levels of CD3,CD4 and CD4/CD8 decreased significantly,and the level of CD8 increased significantly 3 d after injury in observational group.The levels of lymphocyte subsets began to recover after 7 d of injury,and arrived at the normal level after 14 d of injury.The differences of the levels of lymphocyte subsets between two groups after 1 d,3 d and 7 d after injury were statistically significant(P<0.05 to P<0.01),and there was not statistical significance 14 d after injury(P>0.05).The lung infection rates in the observation group and control group after 4 d of injury were 73.3% and 0,respectively,the difference of which was statistically significant(P<0.01).Conclusions: Decreasing on day 1,significant decreasing on day 3,recovering on day 7 and arriving at the normal level on day 14 are the change rules of T lymphocyte subsets in severe craniocerebral injury patients.The immunologic intervention can be used to prevent infection in severe craniocerebral injury patients.
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Key words:
- craniocerebral injury /
- T lymphocyte subsets /
- flow cytometry /
- immune /
- infection
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