CGH: 粪便钙卫蛋白对溃疡性结肠炎患者治疗效果的预测作用

2022-08-15 xuyihan MedSci原创

溃疡性结肠炎是一种病因尚不十分清楚的结肠和直肠慢性非特异性炎症性疾病,病变局限于大肠黏膜及黏膜下层。

近年来,溃疡性结肠炎 (UC) 的治疗目标已经从控制症状转向内镜下缓解,内镜下缓解定义为Mayo 内窥镜评分 (MES)小于1分,同时组织学评估细胞水平的炎症过程可能是比内窥镜评估对炎症状态的变化更敏感。此外,前瞻性队列研究的结果表明,组织学缓解可能是优于内镜缓解的预后指标。但是目前尚不清楚黏膜需要多长时间才能到达展示宏观(内窥镜检查)和微观(组织学)反应的治疗终点。血液和粪便生物标志物有可能指导靶向治疗过程,因为它们是非侵入性的、成本相对较低且方便的措施。粪便钙卫蛋白 (FCP) 是中性粒细胞分泌的急性标志物,提示FCP浓度是内镜缓解的潜在替代指标。FCP 的急性变化可能具有预后意义。本项研究旨在评估诱导后粪便钙卫蛋白 (FCP) 浓度是否可以作为生物标志物。

本项研究收集了GEMINI 1/GEMINI LTS队列 (N=620) 和 VARSITY 队列(N=771) 中诱导治疗后粪便中的FCP浓度水平,然后将其与在识别内窥镜活动和组织学炎症方面的横断面准确性进行相关性分析,以及评估FCP在识别最有可能实现内镜和组织学缓解或需要结肠切除术和 UC 相关住院治疗的患者中的作用。

研究结果显示:FCP在识别内窥镜活动和组织学炎症方面的横截面准确性适中(63%–79%)。然而,诱导后FCP浓度≤250μg/g与实现临床缓解的可能性显着增加相关(优势比 [OR],4.03;95% 置信区间 [CI],2.78– 5.85)、内镜下缓解(OR,4.26;95% CI,2.83-6.40)和组织学缓解(Robarts 组织病理学指数:OR,5.54;95% CI,3.77-8.14;Geboes 分级:OR,6.42;95% CI,第 52 周时为 4.02–10.26)有关,而且7年内结肠切除术的可能性较低(风险比 [HR],0.296;95% CI,0.130–0.677)和相关住院(HR,0.583;95% CI,0.389–0.874)风险也较低。即使在症状缓解或诱导后内镜改善的患者中,与结肠切除术的相关性也很显着,

本项研究证实尽管FCP在识别疾病活动方面的横截面准确性只有中等,但FCP 浓度≤250μg/g与实现长期临床、内镜和组织学缓解的可能性增加有关,并降低可能性结肠切除术和UC相关住院治疗。

原始出处:

Parambir S. Dulai. et al. Prognostic Value of Fecal Calprotectin to Inform Treat-to-Target Monitoring in Ulcerative Colitis. Clinical Gastroenterology and Hepatology.2022.

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    2023-07-16 chendoc242
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    2022-10-18 nymo
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    2022-08-16 Homburg

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