尿液V-集Ig域含蛋白4和免疫复合体,用于追踪狼性炎和病理
Aygun Teymur1, Chenling Tang1, Fariz Nazir1
1University of Houston, Houston, Texas.
ACR open rheumatology
|May 7, 2025
概括
尿液V组Ig域含蛋白4免疫复合体 (VSIG4-ICx) 显示为狼性炎 (LN) 的新型非侵入性生物标志物具有前途. 升高的VSIG4-ICx水平与疾病活性相关,有助于诊断和监测LN.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 免疫学 免疫学 免疫学
- 生物标志物发现发现
背景情况:
- 狼性炎 (LN) 是系统性红斑狼的一种严重并发症.
- 目前对LN的诊断和监测方法可能是侵入性的,缺乏特异性.
研究的目的:
- 研究V集Ig域含蛋白4 (VSIG4;也称为Ig超级家族的补充受体[CRIg]) 免疫复合体 (ICxs) 与LN脏中的IgG和C3的形成.
- 评估尿路VSIG4和VSIG4-ICx作为潜在的非侵入性生物标志物用于LN诊断和监测.
主要方法:
- 免疫光染色检测VSIG4,IgG和C3沉积在脏活检中.
- 酶相关免疫吸收试验 (ELISA) 用于量化尿路VSIG4和VSIG4-ICx在LN患者,健康对照 (HCs) 和慢性病 (CKD) 患者中.
主要成果:
- 在LN患者的脏中,VSIG4,IgG和C3聚合,在质细胞中增加了VSIG4的表达.
- 与HC和CKD患者相比,在LN患者中观察到尿中显著升高的VSIG4 (自由形式和ICx) 水平.
- 尿液VSIG4-ICx与临床疾病活性指数 (SLEDAI,脏SLEDAI),功能 (eGFR) 和补充水平 (C3,C4) 强烈相关.
结论:
- VSIG4-ICx是一种有前途的新型尿液生物标志物,用于狼性炎.
- 尿路VSIG4-ICx对于诊断和监测LN的疾病具有潜在的临床实用性.
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