在症状前的个体中,由自身抗体向的皮层预测了早期的类风湿性关节炎
Yibo He1, Outi Sareila1, Linda Johansson2
1Medical Inflammation Research, Division of Immunology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden.
Annals of the rheumatic diseases
|May 10, 2025
概括
在类风湿性关节炎 (RA) 发病前几年对特定的抗卡特林蛋白抗体 (ACPA) 反应预测了不太严重的疾病. 这些ACPA反应与早期RA患者的疾病活性降低有关.
科学领域:
- 类风湿病学 类风湿病学
- 免疫学 免疫学 免疫学
- 生物标志物发现发现
背景情况:
- 类风湿性关节炎 (RA) 是一种慢性自身免疫性疾病,其特征是关节炎症.
- 早期发现和预测疾病严重程度对于有效治疗RA至关重要.
- 抗素蛋白抗体 (ACPA) 是RA的关键生物标志物,但它们在症状前阶段的预测作用需要进一步研究.
研究的目的:
- 为了研究抗素蛋白抗体 (ACPA) 对新型的反应.
- 确定这些ACPA反应是否可以预测在前症状阶段未经治疗的早期类风湿性关节炎 (RA) 的临床结果.
- 分析ACPA反应与疾病活动标志物之间的关联.
主要方法:
- 来自RA患者的单克隆ACPA和来自预症状患者,早期RA患者和人口对照的血样本的分析.
- 使用基于珠子的多重流免疫试验,评估ACPA对素和原生α-enolase (ENO1) 或peptidylarginine deiminase 4 (PAD4) 的反应.
- ACPA反应与临床结果的相关性,包括C反应蛋白 (CRP) 和28关节疾病活性评分 (DAS28) 组件.
主要成果:
- 单克隆ACPAs显示出与ENO1和PAD4的明显结合模式.
- 在导致RA发作的症状前阶段观察到ACPA对酸反应的时间依赖性增加.
- 在症状前和早期的RA阶段,ACPA对特定ENO1和PAD4的反应与较低的疾病活性 (较低的CRP和DAS28) 有关.
- 这种关联在风湿性因素阴性早期RA患者中更为明显.
结论:
- 对某些素化表位体的抗体反应与未经治疗的早期RA患者的疾病活性降低有关.
- 这些预测性ACPA反应可以在RA症状出现前几年被检测出来.
- 特定的ACPA反应可以作为预测RA疾病进程的有价值的生物标志物.
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