J Thromb Haemost:免疫性血小板减少症儿童抗血小板抗体的预后意义

2020-02-14 xing.T MedSci原创

由此可见,抗血小板抗体的检测可能有助于新诊断的ITP儿童临床预后和治疗的决策指导。该研究的数据表明,开发更敏感的检测方法可能会进一步提高抗体检测的临床价值。

抗血小板抗体检测可能有助于儿童免疫性血小板减少症(ITP)的诊断和治疗。近日,血栓和凝血疾病权威杂志Journal of Thrombosis and Haemostasis上发表了一篇研究文章,研究人员旨在评估抗血小板糖蛋白特异性IgM和IgG抗体的阳性情况和预后意义。

诊断为ITP的儿童在诊断时纳入研究,并随机分为静脉免疫球蛋白(IVIg)治疗组或仔细观察组(TIKI试验)。在这个定义明确且纵向随访的队列中(N=179),研究人员通过MAIPA测定了抗血小板糖蛋白特异性IgM和IgG抗体水平。

ITP儿童循环中抗血小板抗体类别主要是IgM(占患者的62%);但也发现了IgG抗体(占10%)。没有血小板IgM抗体的儿童年龄较大,且多为女性。微弱的证据表明抗GP IIb/IIIa IgM抗体与出血严重程度增加之间存在关联(P=0.03)。抗血小板IgM和IgG反应部分有重叠,反应性经常针对多种糖蛋白。在一年的随访中,观察组中具有IgM抗体的儿童与没有IgM的儿童相比血小板恢复的速度更快,在调整了年龄和既往感染后也是如此(P=7.1x10-5)。少数检测到抗血小板IgG抗体的患者对IVIg治疗表现出几乎完全的反应(N=12;P=0.02),这表明IVIg对这些儿童特别有效。

由此可见,抗血小板抗体的检测可能有助于新诊断的ITP儿童临床预后和治疗的决策指导。该研究的数据表明,开发更敏感的检测方法可能会进一步提高抗体检测的临床价值。

原始出处:

David E. Schmidt.et al.Anti‐Platelet Antibodies in Childhood Immune Thrombocytopenia: Prevalence and Prognostic Implications.Journal of Thrombosis and Haemostasis.2020.https://onlinelibrary.wiley.com/doi/10.1111/jth.14762

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