随着时间的推移,系统补充激活的动态风险会导致晚期与年龄相关的黄斑退化
Anne M Lynch1, Nathan C Grove1, Brandie D Wagner2
1Department of Ophthalmology, University of Colorado School of Medicine, Aurora.
JAMA ophthalmology
|June 12, 2025
概括
系统补充因子的升高,包括C4,C4b,C3a/C3,C5a/C5,sC5b-9/C5和I因子,显著增加了中期与年龄相关的黄斑变性 (iAMD) 进展到晚期的风险. 这些标记物的早期识别可能允许及时进行治疗干预.
科学领域:
- 眼科和视觉科学 眼科和视觉科学
- 免疫学和补充系统生物学
- 医疗诊断和治疗 医学诊断和治疗
背景情况:
- 中期与年龄相关的黄斑变性 (iAMD) 是视力受损的重要原因.
- 了解进展因素对于在不可逆转的视力丧失之前进行早期干预至关重要.
- 系统补充因子在iAMD进展中的作用需要进一步阐明.
研究的目的:
- 研究纵向系统补充因子水平与iAMD向高级阶段的进展 (地理缩[GA]或新血管AMD[NVAMD]) 之间的关联.
- 为了确定特定的补充因子比率是否有助于AMD进展的风险.
主要方法:
- 进行了一项队列研究,对被诊断患有iAMD的患者进行了跟踪,并对疾病进展进行了跟踪.
- 分析了系统补充因子及其比率的纵向测量.
- 使用联合模型来评估补充因子和时间到晚期AMD之间的关系,并将危险比率 (HR) 作为关联的衡量标准.
主要成果:
- 较高的C4,C4b,C3a/C3,C5a/C5,sC5b-9/C5和I因子的系统水平显著与进展到任何高级AMD的时间缩短有关.
- 具体来说,C3a/C3和C5a/C5水平升高与发展地理缩 (GA) 的风险增加有关.
- 在325名参与者中,34%的患者在平均3.9年的随访时间内发展为晚期的AMD.
结论:
- 补体通路的调节失调与加速iAMD进展有很大关系.
- 系统补充因子水平作为潜在的生物标志物用于识别患有AMD进展高风险的个体.
- 这些发现支持开发个性化的眼科护理和向的全身疗法,以减轻AMD的进展.
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