检验医学 ›› 2020, Vol. 35 ›› Issue (8): 791-794.DOI: 10.3969/j.issn.1673-8640.2020.08.011

• 临床应用研究·论著 • 上一篇    下一篇

血清胃蛋白酶原对幽门螺杆菌感染的诊断价值

金鑫1, 李树锦1, 陈贞1, 沈佐君2()   

  1. 1.合肥市第二人民医院 安徽医科大学附属合肥医院检验科,安徽 合肥 230011
    2.中国科学技术大学附属第一医院(安徽省立医院)科研处,安徽 合肥 230001
  • 收稿日期:2019-12-03 出版日期:2020-08-30 发布日期:2020-09-24
  • 作者简介:null

    作者简介:金 鑫,女,1983年生,硕士,主管技师,主要从事临床生化、临床免疫学检验工作。

Role of serum pepsinogen in the diagnosis of Helicobacter pylori infection

JIN Xin1, LI Shujin1, CHEN Zhen1, SHEN Zuojun2()   

  1. 1. Department of Clinical Laboratory,the Second People's Hospital of Hefei City,Hefei Hospital Affiliated to Medical University of Anhui,Hefei 230011,Anhui,China
    2. Department of Academic Affairs,the First Affiliated Hospital of University of Science and Technology of China(Anhui Provincial Hospital),Hefei 230001,Anhui,China
  • Received:2019-12-03 Online:2020-08-30 Published:2020-09-24

摘要:

目的 探讨血清胃蛋白酶原Ⅰ(PGⅠ)、胃蛋白酶原Ⅱ(PGⅡ)及胃蛋白酶原Ⅰ/ 胃蛋白酶原Ⅱ比值(PGR)对幽门螺杆菌(HP)感染的诊断价值。方法 选取进行血清HP抗体和胃蛋白酶原检测并接受尿素呼气试验检查的住院患者88例,将尿素呼气试验和HP抗体同时阳性判定为HP感染组(56例),同时阴性判定为HP非感染组(32例)。检测所有患者的血清PGⅠ、PGⅡ水平,并计算PGR。采用受试者工作特征(ROC)曲线评估各项指标判断HP感染的价值。结果 HP感染组血清PGⅠ、PGⅡ水平均高于HP非感染组(P值分别为0.021、0.000),PGR低于HP非感染组(P=0.000)。男性血清PGⅠ、PGⅡ水平均高于女性(P值分别为0.002、0.008),PGR男性、女性之间差异无统计学意义(P=0.601)。ROC曲线分析结果显示,PGⅠ、PGⅡ及PGR判断HP感染的曲线下面积(AUC)分别为0.648、0.785和0.789,PGⅡ和PGR的最佳临界值分别为15.57 μg/L、9.27,敏感性分别为76.79%、75.00%,特异性分别为78.13%、68.75%;PGⅡ和PGR联合检测的AUC为0.829,敏感性为92.86%,特异性为65.63%。结论 PGⅡ和PGR对判断HP感染有一定价值,二者联合检测效果更佳。

关键词: 胃蛋白酶原, 幽门螺杆菌, 感染

Abstract:

Objective To investigate the diagnostic roles of pepsinogen Ⅰ(PGⅠ),pepsinogen Ⅱ(PGⅡ) and pepsinogen Ⅰ/ pepsinogenⅡ ratio(PGR) for Helicobacter pylori(HP) infection. Methods A total of 88 inpatients who were examined by serum HP antibody and pepsinogen determinations and urea breath test were enrolled. The cases with positive results of both urea breath test and HP antibody determination were classified as HP infection group(56 cases),and those with negative results were classified as HP non-infection group(32 cases). Serum PGⅠand PGⅡ levels were determined,and PGR was calculated. Receiver operating characteristic(ROC) curve was used to evaluate their roles in the diagnosis of HP infection. Results The levels of PGⅠand PGⅡ were higher in HP infection group than those in HP non-infection group(P=0.021 and 0.000),and PGR was lower(P=0.000). The levels of PGⅠand PGⅡ were higher in males than those in females(P=0.002 and 0.008),and there was no statistical significance in PGR between males and females(P=0.601). ROC curve analysis showed that the areas under curves (AUC) of PGⅠ,PGⅡ and PGR for the diagnosis of HP infection were 0.648,0.785 and 0.789,respectively. The optimal cut-off value of PG Ⅱ was 15.57 μg/L,and that of PGR was 9.27. The sensitivities were 76.79% and 75.00%,and the specificities were 78.13% and 68.75%,respectively. The AUC of the combined determination of PGⅡ and PGR was 0.829,and the sensitivity and specificity were 92.86% and 65.63%,respectively. Conclusions PGⅡ and PGR play roles in the diagnosis of HP infection. If PGⅡ and PGR were combinedly determined,the diagnostic effect would be improved.

Key words: Pepsinogen, Helicobacter pylori, Infection

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