Rheumatology:类风湿性关节炎与肠道通透性增加和细菌易位有关,炎症控制可逆转这种情况

2022-08-15 紫菀款冬 MedSci原创

评估类风湿性关节炎(RA)和疾病修饰抗风湿药物(DMARDs)对肠道通透性的影响。

目的:评估类风湿性关节炎(RA)疾病修饰抗风湿药物(DMARDs)肠道通透性的影响。

方法:为了探讨结肠粘膜的完整性,通过免疫组织化学染色对20例RA患者和20例年龄、性别匹配对照者的结肠活检组织中的紧密连接蛋白ZO-1、occludin和claudin-2进行定量。染色强度由两名盲法独立阅片者评估。

为了探索肠道通透性,在另一个59例RA队列中——21例未使用DMARDs的患者(17例在引入常规合成(cs)DMARDs之前和之后)、38例严重RA患者(在引入生物(b)DMARD之前和之后),以及33名健康对照,通过ELISA评估了LPS结合蛋白(LBP)、sCD14和zonulin相关蛋白(ZRP)的血清浓度。

结果:RA患者结肠中ZO-1蛋白的表达低于对照组(平均得分±标准误:1.6 ± 0.56 vs 2.0 ± 0.43, p=0.01),而在occludin和claudin-2中未检测到显著差异。

RA患者的血清LBP和sCD14浓度高于对照组。LBP和sCD14水平与DAS28显著相关(分别为r = 0.61,p=0.005;r = 0.57,p=0.01),而ZRP没有关联。

与bDMARD无应答者和接受csDMARDs治疗的患者不同,bDMARD应答者的LBP和sCD14浓度显著降低

结论:RA患者结肠紧密连接蛋白发生改变,肠道通透性的血清生物标志物增加。肠道通透性的血清学标志物与疾病活动以及bDMARD反应之间存在相关性。这些结果表明RA患者肠道完整性受损与全身炎症之间存在联系

文献来源:

Audo R, Sanchez P, Rivière B, et al. Rheumatoid arthritis is associated with increased gut permeability and bacterial translocation which are reversed by inflammation control Rachel [published online ahead of print, 2022 Aug 10]. Rheumatology (Oxford). 2022;keac454. doi:10.1093/rheumatology/keac454

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    2022-10-04 zhmscau
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    2022-08-16 lmm397
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