Luminex技术监测抗HLA抗体对肾移植受者预后的影响

Effect of anti-HLA antibody detected by Luminex testing on clinical prognosis of renal transplantation recipients

目的探讨Luminex技术检测受者体内抗人类白细胞抗原(HLA)抗体水平在预测肾移植受者预后的价值。方法选取2013年6月至2015年11月在解放军第181医院拟行肾移植患者1 105例(其中354例成功接受肾移植手术),收集肾移植术前、术后血清标本共1 923例次。采用Luminex技术检测术前和术后的抗HLA抗体的阳性率和抗体荧光强度,同时并对移植受者进行移植肾功能检测。结果术前抗HLA抗体阳性血清样本占总数的51.0%(546/1 071),其中抗HLAⅠ类抗体阳性占26.0%(279/1 071),抗HLAⅡ类抗体阳性占24.9%(267/1 071),其中抗HLA抗体Ⅰ、Ⅱ类均为阳性占11.4%(122/1 071)。354例肾移植患者中,术后出现抗HLA抗体者占17%(59/354),其中单独抗HLAⅠ类抗体阳性者25例(术后新发阳性4例),单独抗HLAⅡ类抗体阳性者占15例(术后新发阳性1例),两者皆阳性者19例(术后新发阳性4例)。随访期间,术后抗HLAⅠ类、Ⅱ类及两种抗体均阳性者出现移植肾功能异常者分别为13例、5例和11例,其中术后抗体新发阳性者均出现移植肾功能异常。结论 Luminex技术可动态监测肾移植术后受者抗HLA抗体水平,而抗HLA抗体阳性对预测肾移植受者预后有重要的价值。

Objective To investigate the value of anti-human leukocyte antigen （HLA）antibody level detected by Luminex testing in predicting clinical prognosis of renal transplantation recipients. Methods A total of 1 105 patients scheduled to undergo renal transplantation （354 successfully undergoing renal transplantation）in the 181st Hospital of People＆#39;s Liberation Army from June 2013 to November 2015 were selected. The serum samples were collected from 1 923 cases before and after renal transplantation. The positive rate and fluorescent intensity of anti-HLA antibody were detected by Luminex testing before and after renal transplantation. The renal function of recipients was also evaluated after renal transplantation. Results Prior to renal transplantation,51.0%（546/1 071）of serum samples were positive for anti-HLA antibody,including 26.0%（279/1 071）positive for anti-HLAⅠantibody,24.9%（267/1 071）positive for anti-HLAⅡantibody and 11.4% （122/1 071 ）positive for both anti-HLA Ⅰ and anti-HLA Ⅱ antibodies. Among 354 patients undergoing renal transplantation,59 （17%）were positive for anti-HLA antibody after renal transplantation,including 25 （4 newly positive after surgery）positive for anti-HLAⅠantibody,15 （1 newly positive after surgery）positive for anti-HLAⅡantibody and 19 （4 newly positive after surgery）positive for both anti-HLA Ⅰ and anti-HLA Ⅱ antibodies. During subsequent follow-up,13 patients positive for anti-HLAⅠantibody,5 positive for anti-HLAⅡantibody and 1 1 positive for both anti-HLA Ⅰ and anti-HLA Ⅱ antibodies developed transplant kidney dysfunction. All patients newly positive for anti-HLA antibody after renal transplantation presented with transplant kidney dysfunction. Conclusions Luminex testing can perform dynamic detection of the positive rate of anti-HLA antibody,which is important in predicting clinical prognosis of recipients after renal transplantation.