评估便蛋白在老年人中的作用
Robert William Perry1,2, Peter Foulser3,2, David Zhang4
1Imperial College London, Department of Metabolism, Digestion and Reproduction, London, United Kingdom of Great Britain and Northern Ireland robert.perry5@nhs.net.
概括
便中的calprotectin (FC) 是老年人胃肠道炎症的敏感标志物. 虽然用于排除炎症性肠病 (IBD),便免疫化学测试 (FIT) 可能更好地检测结肠直肠癌在这个年龄组有用.
科学领域:
- 胃肠病学 胃肠病学
- 临床诊断 临床诊断 临床诊断
- 初级医疗保健医学 一级医疗保健医学
背景情况:
- 便calprotectin (FC) 是胃肠道炎症的关键生物标志物,指导初级保健中的内镜转诊.
- 目前的指导方针通常不鼓励在老年人中使用FC,因为结直肠癌 (CRC) 的风险,尽管其继续应用.
- 现有的研究经常排除了老年人群,限制了对这一人口群体FC表现的理解.
研究的目的:
- 评估FC的诊断准确性,以确定50岁及以上的成年人中的IBD和显著的有机病理.
- 为了比较FC与老年人便免疫化学测试 (FIT) 的性能.
- 为初级保健指南提供有关老年患者适当使用和解释FC的信息.
主要方法:
- 一项队列研究,涉及经过FC测试,随后进行结肠镜检查的患者.
- 患者被分为两组:年轻人 (18-49岁) 和老年人 (≥50岁).
- 分析了FC和FIT的性能指标,以诊断IBD和有机病理,包括CRC.
主要成果:
- 在年轻人和老年人之间没有观察到FC水平的显著差异 (中位数为71比85.5μg/g).
- FC>50μg/g在两个年龄组中都表现出对IBD的高敏感性 (94.1%和93.8%),但在老年人 (12.8%) 中的阳性预测值 (PPV) 较低.
- 对于IBD和有机病理学,FC的表现优于FIT (值10μg/g),但在较高FC值 (150μg/g) 的50岁以上患者中,FIT在检测CRC方面表现更好.
结论:
- 便calprotectin (FC) 仍然是50岁以上成年人胃肠道炎症的敏感诊断工具.
- 在老年人中,FC可以作为IBD的有价值的"排除"测试,表现为下肠道症状和负FIT,特别是当不怀疑CRC时.
- 在特定值的老年人中,FIT在检测显著的有机病理,包括CRC方面表现出卓越的表现.
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