在敏感移植接受者中循环免疫复合体和补充激活
Maria Stella Trivyza1, Charikleia Stergiopoulou2, Sotiris Tsakas2
1Department of Nephrology and Kidney Transplantation, University Hospital of Patras, 26504 Patras, Greece.
International journal of molecular sciences
|October 26, 2024
概括
移植脏的接受者与捐赠者特异性抗体显示较高水平的C1q免疫复合体和增加的经典补充激活. 这表明补充系统在抗体中介排斥和潜在的移植损失中发挥着至关重要的作用.
科学领域:
- 免疫学 免疫学 免疫学
- 移植 移植 移植 移植
- 腎臟病學 (nephrology) 是一種醫學.
背景情况:
- 慢性抗体中介排斥是移植失败的主要原因.
- 经典的补充途径,涉及C1q与免疫复合体的结合,涉及到这个排斥过程.
- 了解像C1q免疫复合体和CH50这样的补充激活标记在敏感移植接受者中至关重要.
研究的目的:
- 测量循环中的C1q免疫复合体 (CIC-C1q) 和补充激活 (CH50) 水平.
- 为了比较移植受体 (KTRs) 具有和没有捐赠者特异性抗体 (DSAs) 的这些水平.
- 研究KTRs中CIC-C1q水平和DSA标位之间的相关性.
主要方法:
- 一项涉及KTRs与DSAs (n=14),KTRs没有DSAs (n=28) 和健康对照 (n=22) 的血清样本的横截面研究.
- 酶免疫测试 (EIA) 套件 (MicroVue CIC-C1q和MicroVue CH50) 被用于量化.
- 统计分析比较了各组之间的标志物水平,并评估了相关性.
主要成果:
- 与对照组和DSA阴性KTR相比,具有DSA的KTR显示出明显更高的CIC-C1q度 (p < 0.01).
- CIC-C1q水平与DSA标位显示出正相关性.
- 与对照组和DSA负的KTR相比,DSA的KTR中CH50水平显著下降 (p < 0.01),表明经典通路激活.
结论:
- 有DSA的敏感移植接受者显示血清CIC-C1q水平升高.
- 增加经典通路补充激活,由CH50降低证明,与KTRs中的DSAs有关.
- 这些发现强调了C1q免疫复合体和补充激活在DSA阳性移植受体中的关键作用,可能有助于慢性抗体中介排斥.
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