流式细胞仪检测HLA-B27在强直性脊柱炎筛查中的应用及分析

目的回顾性分析该院人类白细胞抗原(HLA)B27的检测结果,探讨其在强直性脊柱炎(AS)筛查中的应用价值。方法采用多参数流式细胞仪对2015年1月至2016年6月于该院就诊的疑似AS的患者1 335例进行HLA-B27检测。1 335例疑似AS患者中,最终诊断为AS患者201例(AS组),1 134例为风湿类风湿性关节炎等相关疾病患者(非AS组)。检测结果以HLA-B27的平均荧光强度和阳性淋巴细胞表达率表示。另外选取于该院体检中心体检的120例健康者作为对照组。结果疑似AS患者HLA-B27筛查阳性率为15.73%(210/1 335);对照组HLA-B27筛查阳性率为2.50%(3/120)。AS组患者HLAB27筛查阳性率、细胞表达率、平均荧光强度分别为为92.03%(185/201)、(85.34±17.99)%、8.74±4.20,明显高于非AS组及对照组(P0.01)。对照组上述指标与非AS组比较差异无统计学意义(P0.05)。HLA-B27筛查阳性者主要集中在青少年期,且男性的阳性率明显高于女性(P0.05)。结论流式细胞术检测HLA-B27可为AS的诊断与鉴别诊断提供重要依据。

The application and analysis of HLA-B27 in the screening of ankylosing spondylitis by flow cytometry

Objective To retrospectively analyse the detection results of human leukocyte antigen(HLA) B27,and discuss its diagnosis value in disease such as ankylosing spondylitis(AS).Methods HLA-B27 detection was performed on 1 335 suspected AS patients treated in the hospital from January 2015 to June 2016 by using multiparameter flow cytometry instrument.The test results showed 201 patients were diagnosed with AS(AS group),1 134 patients were diagnosed with rheumatoid arthritis and other related diseases (non AS group).The test results were shown by using mean fluorescence intensity and positive lymphocyte expression rate.n addition,120 healthy people were enrolled as the control group in the physical examination center of the hospital.Results The positive rate of HLA-B27 screening in suspected AS patients was 15.73% (210/1 335),and the positive rate of HLA-B27 screening in the control group was 2.50% (3/120).The positive rate of HLA-B27 screening,the rate of cell expression and the average fluorescence intensity of AS group were 92.03%(185/201),(85.34±17.99)%,8.74±4.20,significantly higher than the non AS group and the control group(P<0.01).There was no significant difference between the control group and the non AS group (P>0.05).HLA-B27 screening positive patients were mainly concentrated in adolescence,and the positive rate of male was higher than that of female (P<0.05).Conclusion Flow cytometry examination of HLA-B27 can provide important basis for the diagnosis and differential diagnosis of AS.