Circulation:IgA结合β2-糖蛋白-I免疫复合物:预测肾移植后血栓形成的新型标志物

2017-03-05 MedSci MedSci原创

抗磷脂综合征(APS)的特征在于患有抗磷脂自身抗体(aPL)患者的复发性血栓形成和/或妊娠发病。存在aPL的预测值低,需要新的标记物来鉴定具有较高风险的aPL携带者并对其采取预防措施。与β2-糖蛋白-I(B2A-CIC)结合的IgA循环免疫复合物的存在与急性血栓形成(TEV)的发生相关。近期,一项发表在杂志Circulation上的研究检测了即将接受移植手术患者出现TEV(aPL携带者触发TEV)

抗磷脂综合征(APS)的特征在于患有抗磷脂自身抗体(aPL)患者的复发性血栓形成和/或妊娠发病。存在aPL的预测值低,需要新的标记物来鉴定具有较高风险的aPL携带者并对其采取预防措施。与β2-糖蛋白-I(B2A-CIC)结合的IgA循环免疫复合物的存在与急性血栓形成(TEV)的发生相关。


近期,一项发表在杂志Circulation上的研究检测了即将接受移植手术患者出现TEV(aPL携带者触发TEV)的可能预测价值。

此项研究分为三组:第1组:IgA抗β2-糖蛋白-I(B2GP1)和B2A-CIC(N = 125)阳性的患者。第2组仅IgA抗B2GP1呈阳性(N = 240)的患者。对照组:IgA抗B2GP1阴性(N = 974)的患者。在移植手术前立即量化自身抗体和B2A-CIC的水平,随访6个月。

此项研究结果显示:在第1组中46.4%的患者出现血栓形成vs.在第2组中为10.4%(p <0.001);在对照组中为8.6%(p <0.001)。第1组中移植物血栓形成的发生率(31.2%)显着高于第2组(3.3%,p <0.001)和对照组(2.6%,p <0.001)。在多变量分析中,B2A-CIC的存在是一种独立的变量,承受任何类型的移植后血栓形成(危险比:6.72; 95%CI:4.81-9.37) 以及移植物血栓形成(危险比:14.75; 95%CI:9.11-23.89)。在B2A-CIC阴性和对照组患者之间没有发现显着差异。

此项研究得出结论:B2A-CIC的存在是TEV的预测因子。IgA抗B2GP1阳性的患者如果同时存在B2A-CIC阳性,则其处于发生血栓形成的风险。如果他们是B2A-CIC阴性患者,那么他们发生血栓的风险与对照组相同。为了防止TEV的发生,应该密切关注B2A-CIC阳性的患者。

原始出处:
Serrano M, Martínez-Flores JA, et al. Immune Complexes of Beta-2-Glicoprotein I Bounded to IgA: A Novel Marker Able to Predict Thrombosis After Renal Transplantation in Patients with Antiphospholipid Antibodies. Circulation. 2017 Mar 1. pii: CIRCULATIONAHA.116.025992. doi: 10.1161/CIRCULATIONAHA.116.025992. 

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    2018-01-06 yang0210
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    2018-02-11 hukaixun
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    2017-03-07 yibei
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