淋巴缺血和外周血液CD4+和CD8+T细胞中的高Ki-67表达与渐进的肉类发病症有关
Susanna Kullberg1,2, Johan Grunewald3,2, Anders Eklund3,2
1Respiratory Medicine Division, Department of Medicine, Karolinska Institutet, Stockholm, Sweden susanna.kullberg@ki.se.
BMJ open respiratory research
|December 14, 2023
概括
周围血液淋巴缺血和增加的T细胞增殖在肉类突发症患者表明疾病的进展过程. 测量T调节细胞 (Tregs) 和Ki-67+T细胞可能有助于预测沙尔科毒症的结果.
科学领域:
- 免疫学 免疫学 免疫学
- 肺部病理学 肺部病理学
背景情况:
- 早期识别渐进的类固醇症对于及时干预至关重要.
- 高水平的支气管支气管洗液 (BALF) 淋巴细胞和周围血液 (PB) 淋巴缺血与较差的肉类发病预后有关.
- 沙尔科毒症疾病进展背后的机制尚不清楚,这阻碍了准确的预测.
研究的目的:
- 调查BALF和PB中的T调控细胞 (Tregs) 和增殖T细胞的频率.
- 为了将免疫细胞概况与沙尔科病患者的临床疾病过程相关联.
- 为了确定潜在的生物标志物来预测沙尔科毒性病的进展.
主要方法:
- 在诊断时,有19名先前未接受过治疗的肉类瘤患者提供了BAL和PB样本.
- 在诊断后长度采集PB样本长达一年.
- 免疫细胞分析包括淋巴细胞计数,FoxP3+Tregs和Ki-67+增殖CD4+和CD8+T细胞.
主要成果:
- 没有患者经历了疾病的缓解,11人患有慢性稳定,8人患有慢性渐进性沙尔科发症.
- 渐进性沙尔科发症与较低的PB淋巴细胞数量有关.
- 在渐进的病例中观察到Ki-67+ CD4+ 和 CD8+ T 细胞的频率增加以及更高的FoxP3+ Tregs的趋势.
结论:
- 渐进性沙尔科发症显示PB淋巴细胞减少,T细胞增殖增加,表明淋巴细胞周转率较高.
- PB T调节细胞 (Tregs),Ki-67+ CD4+ T细胞和Ki-67+ CD8+ T细胞可以作为沙丘症疾病过程的预测因子.
- 这些发现提供了有关免疫机制的见解,这些机制驱动了沙尔科毒症的进展.
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