肝炎C病毒相关的血球蛋白性血管炎的血清和分子特征在没有冷沉的患者中
Cecilia Napodano1, Gabriele Ciasca2,3, Patrizia Chiusolo3,4
1Department of Laboratory Medicine and Pathology, S. Agostino Estense Hospital, 41126 Modena, Italy.
International journal of molecular sciences
|July 29, 2023
概括
型肝炎病毒 (HCV) 可以引发自身免疫. 在HCV患者的血管炎早期诊断包括分析免疫球蛋白重链 (IGH) 和T细胞受体 (TCR) 基因重排序,甚至在结晶球蛋白被检测到之前.
科学领域:
- 免疫学 免疫学 免疫学
- 肝病学 肝病学是一种肝病学.
- 类风湿病学 类风湿病学
背景情况:
- 长时间的乙型肝炎病毒 (HCV) 刺激B细胞可能导致自身免疫,其特征是结晶球蛋白 (CGs),类风湿因子 (RF) 和免疫球蛋白自由光链 (FLC).
- 这些自身免疫标志物与从无症状到严重的冷球蛋白性血管炎和淋巴瘤的症状有关.
- 在HCV患者中早期发现血管炎对于及时干预至关重要.
研究的目的:
- 识别HCV患者血管炎最早阶段的免疫学特征,即使冷沉积物尚未检测到.
- 为了研究血清学参数,冷球蛋白类型和HCV阳性个体的基因重排之间的关系.
- 确定免疫球蛋白重链 (IgH) 和T细胞受体 (TCR) 基因重排分析对早期诊断的有用性.
主要方法:
- 对120名HCV-RNA阳性患者的IgG亚类,FLC和RF分析,分为四组:无症状但没有冷沉积物,有症状但没有可检测的CG (循环),II型混合型血红蛋白血症 (Cryo II) 和III型混合型血红蛋白血症 (Cryo III).
- 在"循环"组和Cryo II/Cryo III组之间对血清学模式的比较分析.
- 研究IgH和TCR基因重排在"循环"和冷II组,与治愈的HCV阴性患者的对照组相比.
主要成果:
- 怀疑患有循环CGs的患者表现出类似于Cryo II和Cryo III混合晶球蛋白血症的血清学模式,特别类似于Cryo II.
- 在"循环"和"冷II"组中对IgH和TCR基因重组的分析显示,单克隆,寡克隆和多克隆反应的混合分布.
- 相比之下,恢复的HCV阴性对照显示出100%的多克隆反应,突出显示了HCV相关自身免疫的独特免疫特征.
结论:
- 假设循环的冷热球蛋白是HCV阳性患者缺乏可检测的冷沉物的症状来源.
- 对克隆IgH和TCR基因重组的分析是早期诊断HCV感染中的肝外并发症的宝贵工具.
- 这种方法有助于在明显的冷沉形成之前识别患有血管炎和其他自身免疫表现风险的患者.
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