CD109表达量及保存方法的相关性研究

发布时间：2018-05-24 04:56

  本文选题：HPA- + CD　； 参考：《中国输血杂志》2016年11期

【摘要】：目的分析中国南方人群HPA-15基因型分布频率,研究血小板上HPA-15抗原表达量。寻找较好的血小板保存方法以维持HPA-15的高表达量,为单克隆抗体俘获血小板抗原技术(MAIPA)检测HPA-15同种抗体提供合适的供者血小板。方法 1)随机选取广州血液中心的健康血小板单采献血者109名,留取EDTA抗凝管全血。SSPPCR方法检测HPA-15基因型。流式细胞术检测血小板上HPA-15抗原表达量。2)另随机选取健康献血者的单采血小板67例,将每份血小板分为2份,1份重悬于EDTA-PBS中放于4℃保存作为检测组A,另1份留于血小板辫子中放于血小板振荡仪中作为检测组B,在d 0、1、2、3、7、14检测2组血小板上HPA-15的检测含量,比较2组HPA-15含量的变化。结果 1)109名随机健康献血者HPA-15a和HPA-15b的基因频率是0.495和0.505。流式细胞术检测HPA-15抗原的MFI值的范围2.44-20.4,阳性率3.2%-86.7%。不同HPA-15基因型之间,HPA-15抗原表达量有统计学差异(P0.05)。2)分析比较AB这2个组,随着测量时间点的推移,2组HPA-15的表达量均有降低,但检测组B中HPA-15的表达含量高于检测组A,且2组的MFI值有统计学差异(P0.05)。结论 HPA-15a和HPA-15b的基因分布频率相近,HPA-15抗原表达含量整体水平偏低且个体差异性大。体外保存方式下,HPA-15的表达含量随着时间推移逐渐降低,4℃保存方式下HPA-15含量降解尤为明显。血小板振荡仪中保存血小板的方法为MAIPA检测HPA-15抗体提供更合适的血小板抗原。
[Abstract]:Objective to analyze the distribution frequency of HPA-15 genotypes and to study the expression of HPA-15 antigen on platelets in southern China. To find a better method of platelet preservation to maintain the high expression of HPA-15 and to provide suitable donor platelets for monoclonal antibody capture platelet antigen (MAIPA) detection of HPA-15 homoantibodies. Methods 1) A total of 109 healthy platelet donors from Guangzhou Blood Center were randomly selected for detection of HPA-15 genotypes by SSPPCR in the whole blood samples of EDTA anticoagulant tubes. Flow cytometry was used to detect the expression of HPA-15 antigen on platelets. Two pieces of platelets were divided into two parts, one part was stored in EDTA-PBS at 4 鈩，

本文编号：1927760