Ann Rheum Dis:抗Ro52自身抗体与青少年肌炎的间质性肺病和更严重的疾病有关

2019-04-26 xiangting MedSci原创

在所有的青少年肌炎患者中,具有抗Ro52自身抗体的患者更易患ILD。此外,具有抗Ro52自身抗体患者的疾病更严重且预后更差。

抗Ro52自身抗体在有抗氨基酰(t)RNA合成酶自身抗体的成年肌炎患者中与更严重的间质性肺病(ILD)相关。然而,很少有研究分析青少年肌炎中的抗Ro52自身抗体。这项研究目的是在一个大型青少年肌炎患者队列中,确定抗Ro52自身抗体的患病率及与其相关的临床特征。

采用酶联免疫吸附试验(ELISA)筛查302例青少年皮肌炎(JDM)患者、25例青少年多发性肌炎(JPM)患者和44例青少年结缔组织病-肌炎重叠(JCTM)患者血清中的抗Ro52自身抗体。比较伴和不伴抗Ro52自身抗体肌炎患者的临床特征。

14%的JDM患者中发现抗Ro52自身抗体,JPM为12%,JCTM为18%。抗Ro52自身抗体在有抗氨基酰tRNA合成酶(64%,p<0.001)和抗MDA5自身抗体(31%,p<0.05)的患者中更常见。在控制存在肌炎特异性自身抗体后,抗Ro52自身抗体与存在ILD相关(36%vs 4%,p<0.001)。抗Ro52阳性患者病程多为慢性,缓解较为少见,并且用药数量更多。

14%的青少年肌炎患者存在抗Ro52自身抗体,并与抗MDA5和抗氨基酰tRNA合成酶自身抗体密切相关。在所有的青少年肌炎患者中,具有抗Ro52自身抗体的患者更易患ILD。此外,具有抗Ro52自身抗体患者的疾病更严重且预后更差。

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    2019-11-25 amy0559
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