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肌腱端炎相关性关节炎有两种临床表型

2012-08-14 不详 网络

    柏林——英国伦敦大学学院的John Ioannou博士在欧洲风湿病大会(ECR)上报告称,最新证据表明,青少年肌腱端炎相关性关节炎(ERA)具有两种不同的临床表型。    Ioannou博士指出,传统观点认为ERA患者外周关节受累以及肌腱端疾病最为常见,而骶髂关节炎在发病多年后出现,属于后期特征。但现已证明这一观点并不正确。随着对

    柏林——英国伦敦大学学院的John Ioannou博士在欧洲风湿病大会(ECR)上报告称,最新证据表明,青少年肌腱端炎相关性关节炎(ERA)具有两种不同的临床表型。
    Ioannou博士指出,传统观点认为ERA患者外周关节受累以及肌腱端疾病最为常见,而骶髂关节炎在发病多年后出现,属于后期特征。但现已证明这一观点并不正确。随着对符合国际风湿病学会联盟(ILAR)ERA诊断修正标准的患者MRI评价日益增多,现已证实许多患者在发病早期出现骶髂关节炎,而标准放射影像学检查却不能检出。


John Ioannou博士

    ERA是一种有待充分研究的幼年特发性关节炎,其真实发病率并不清楚。Ioannou博士及其同事对首批接受MRI筛查的68例ERA患者进行了长期观察性研究。分析结果表明,36例(62%)患者患有中轴疾病。ERA中轴表型的特征是与HLA-B27阳性高度相关,>80%的中轴型ERA患者HLA-B27阳性,仅少数外周型ERA患者HLA-B27阳性。炎性肠炎和急性前葡萄膜炎等关节外临床表现仅出现在HLA-B27阳性的中轴型ERA患者。非中轴型疾病患者多患有裸关节炎,占80%,而中轴型ERA患者仅为1/4。在68例ERA患者中,58例为男性。中位发病年龄为11岁1个月,从发病至炎性脊柱症状出现的中位时间为2年8个月。
    上述结果与意大利弗罗伦萨大学研究者对59例ERA患者随访结果相一致。该研究显示,59例患者中21例报告在ERA发病中位时间1年3个月后出现炎性背痛症状,其中17例MRI检查证实为骶髂关节炎,而骶髂关节X线检查结果均为阴性。如同伦敦研究患者,中轴受累的意大利患者也多为HLA-B27阳性,非中轴疾病患者裸关节炎发病率较高(J. Rheumatol. 2010;37:2395-401)。
    68例伦敦队列中的29例患者接受抗肿瘤坏死因子(anti-TNF)治疗+甲氨蝶呤或其他非生物改善病程抗风湿药物治疗。研究者指出:“我们的个人经验是anti-TNF治疗对ERA患者非常有效,但应答率较低,因此我们不再继续使用anti-TNF药物。”
    该结果与荷兰研究人员的经验一致。后者报告称,在接受anti-TNF药物治疗的22例患者中,2/3的患者在15个月后为不活动性关节炎和肌腱末端炎,但患者停药后均出现疾病复发(J. Rheumatol. 2011;38:2258-63)。
    研究者称,ERA两种临床表型的发病机理尚不明确。目前,ERA患者的治疗主要参考其他类型的幼年特发性关节炎或成年僵直性脊柱炎的治疗经验,阐明发病机理将有助于确定不同临床表型患者的最佳用药选择。
    研究者报告无相关利益冲突。

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    2012-08-16 lmm397
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    2012-08-16 tastas
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