在大规模的SARS-CoV-2感染后,淋巴细胞子集的持续衰减
Zhengqi Jiang1, Tichao Shan2, Yucan Li1
1Department of Hematology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China.
概括
COVID-19 感染导致长期免疫损害,淋巴细胞子集的显著下降持续数月,特别是在心血管疾病患者中. 这突出了长期COVID的关键特征,需要个性化护理.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 公共卫生 公共卫生
背景情况:
- 越来越多的证据表明,COVID-19患者的淋巴细胞子集下降.
- 这些免疫变化的持续性和持续时间在SARS-CoV-2暴露后仍然不清楚.
研究的目的:
- 为了研究SARS-CoV-2感染对淋巴细胞子集的长期影响.
- 为了确定免疫变化是否在广泛暴露后持续,以及持续多长时间.
- 分析子组差异,特别是在心血管疾病患者中.
主要方法:
- 分析了来自40537名患者的淋巴细胞子集数据,跨越了COVID前,大规模感染和COVID后的阶段.
- 使用曼-惠特尼U和克鲁斯卡尔-瓦利斯H测试对淋巴细胞子集数量和CD4+/CD8+比率进行比较.
- 通过每月暴露后数据比较和对心血管疾病的亚组分析来评估长期影响.
主要成果:
- 在大规模感染期间,T细胞,CD4+T细胞,CD8+T细胞,NK细胞和B细胞的显著下降.
- 即使在感染后20个月,CD8+ T细胞仍然比基线低9.9%.
- 老年人和男性表现为长期淋巴缺血;心血管疾病患者表现为持续的T淋巴细胞减少 (20个月内低于基线72.9%).
结论:
- 感染SARS-CoV-2导致长期免疫损害.
- 持续低于正常的淋巴细胞水平,特别是在心血管疾病患者中,是长期COVID的关键免疫特征.
- 研究结果强调,对于COVID-19后经历长期免疫功能障碍的人来说,需要个性化护理策略.
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