JGH: 停止使用5-氨基水杨酸后溃疡性结肠炎患者疾病复发风险没有增加

2022-07-17 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。

溃疡性结肠炎 (UC) 是一种慢性特发性炎症性肠病,疾病容易复发,会极大的使生活质量受损。5-氨基水杨酸 (ASA) 是轻中度 UC 的一线治疗,已被证明可有效诱导和维持 UC 的缓解。尽管当前指南建议对所有UC进行维持治疗,但维持治疗的持续时间是不确定的。大多数比较5-ASA与安慰剂在静止期UC患者中维持缓解的疗效的随机研究得出的结论是,5-ASA 不能停止,因为安慰剂组的复发率高于5-ASA组,相比之下,两项研究发现,临床缓解超过1年的受试者在随机分配继续使用柳氮磺胺吡啶/美沙拉秦或改用安慰剂时,复发率没有显着差异。此外,有些患者不希望接受终生药物治疗。但是目前缺乏关于长期和临床非活动性UC受试者停用 5-ASA 的结果的数据。因此,本项研究旨在探究是否可以在无类固醇临床缓解至少1年的UC患者中安全停用5-ASA。

这是一项使用香港全港医疗保健数据库的回顾性队列研究。主要观察结果是发生UC复发,复发的定义为5年内使用新的皮质类固醇或出现与UC相关的住院治疗。研究人员收集的数据包括UC患者,口服5-ASA ≥ 2 g,持续≥ 1年,C 反应蛋白 (CRP) < 10 mg/dL,过去一年未增加 5-ASA 剂量、UC相关住院或使用皮质类固醇。使用生物制剂的患者被排除在外。如果在随访期内停用 5-ASA ≥ 90 天,则患者被归类为“停止用药”。最后研究人员进行了多变量 Cox 回归模型,调整了人口统计学、血液参数和使用的免疫抑制剂。研究结果显示:本项研究共纳入1408名患者,中位随访时间为41.8 个月。停止5-ASA用药与UC复发风险增加无关(aHR 0.91;95% CI 0.64–1.31;P= 0.620)。停止5-ASA用药时较高的CRP水平(aHR 1.15;95% CI:1.01-1.30;P= 0.037)与发作风险增加相关。

图:5-ASA停药与疾病缓解的关系

 

本项研究证实在无糖皮质激素缓解期≥1年的UC患者中停止5-ASA用药与复发风险增加无关。未来的前瞻性试验应评估停止 5-ASA 在稳定期UC患者中的作用。

 

原始出处:

Joyce W Y Mak. Et al. No increased risk of flare in ulcerative colitis patients in corticosteroid-free remission after stopping 5-aminosalicylic acid: A territory-wide population-based study. Journal of Gastroenterology and Hepatology.2022.

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    2023-04-23 nymo
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